/* ============================================
   MusicaViva - Main Stylesheet
   Modern, Responsive, Accessible Design
   ============================================ */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Colors - Light Theme */
    --color-primary: #8b5cf6;
    --color-primary-dark: #7c3aed;
    --color-primary-light: #a78bfa;
    --color-primary-rgb: 139, 92, 246;
    
    --color-secondary: #06b6d4;
    --color-secondary-dark: #0891b2;
    
    --color-accent: #f59e0b;
    --color-accent-light: #fbbf24;
    
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    /* Text Colors */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-inverse: #ffffff;
    
    /* Borders */
    --border-color: #e2e8f0;
    --border-color-light: #f1f5f9;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.3);
    
    /* Typography */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'Consolas', monospace;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-slower: 500ms ease;
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-tooltip: 600;
    
    /* Container */
    --container-max: 1280px;
    --container-padding: 1rem;
    
    /* Header */
    --header-height: 72px;
}

/* ============================================
   Dark Theme
   ============================================ */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    
    --border-color: #334155;
    --border-color-light: #475569;
    
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: calc(var(--header-height) + 2rem);
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body.menu-open,
body.modal-open {
    overflow: hidden;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

/* ============================================
   Accessibility
   ============================================ */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--color-primary);
    color: var(--text-inverse);
    padding: var(--spacing-3) var(--spacing-4);
    z-index: var(--z-tooltip);
    border-radius: 0 0 var(--radius-md) 0;
    font-weight: 500;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ============================================
   Layout Utilities
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

/* ============================================
   Typography
   ============================================ */
.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn--outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn--outline:hover {
    background: var(--color-primary);
    color: var(--text-inverse);
}

.btn--lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
}

/* ============================================
   Header
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

[data-theme="dark"] .header {
    background: rgba(15, 23, 42, 0.95);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-xl);
    font-weight: 700;
    z-index: 10;
}

.header__logo-icon {
    font-size: var(--font-size-2xl);
}

.header__logo-accent {
    color: var(--color-primary);
}

/* Mobile Menu Toggle */
.header__menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    z-index: 10;
}

.header__menu-icon,
.header__menu-icon::before,
.header__menu-icon::after {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.header__menu-icon::before,
.header__menu-icon::after {
    content: '';
    position: relative;
}

.header__menu-icon::before {
    top: -7px;
}

.header__menu-icon::after {
    top: 5px;
}

.header__menu-toggle[aria-expanded="true"] .header__menu-icon {
    background: transparent;
}

.header__menu-toggle[aria-expanded="true"] .header__menu-icon::before {
    top: 0;
    transform: rotate(45deg);
}

.header__menu-toggle[aria-expanded="true"] .header__menu-icon::after {
    top: -2px;
    transform: rotate(-45deg);
}

/* Navigation */
.header__nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    padding: calc(var(--header-height) + var(--spacing-8)) var(--spacing-6) var(--spacing-8);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    overflow-y: auto;
}

.header__nav.is-open {
    transform: translateX(0);
}

.header__nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.header__nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    font-size: var(--font-size-lg);
    font-weight: 500;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.header__nav-link:hover,
.header__nav-link--active {
    background: var(--bg-tertiary);
    color: var(--color-primary);
}

.header__nav-link i {
    width: 24px;
    text-align: center;
}

/* Header Actions */
.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    z-index: 10;
}

.header__theme-toggle,
.header__search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.header__theme-toggle:hover,
.header__search-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--color-primary);
}

/* Search Overlay */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    padding: var(--spacing-4);
    transform: translateY(-100%);
    transition: transform var(--transition-slow);
    z-index: var(--z-modal);
    box-shadow: var(--shadow-lg);
}

.search-overlay.is-open {
    transform: translateY(0);
}

.search-overlay__container {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    max-width: var(--container-max);
    margin-inline: auto;
}

.search-overlay__form {
    flex: 1;
    display: flex;
    align-items: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3) var(--spacing-4);
}

.search-overlay__input {
    flex: 1;
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    outline: none;
}

.search-overlay__submit {
    padding: var(--spacing-2);
    color: var(--text-secondary);
}

.search-overlay__close {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
}

/* Desktop Navigation */
@media (min-width: 1024px) {
    .header__menu-toggle {
        display: none;
    }
    
    .header__nav {
        position: static;
        background: none;
        padding: 0;
        transform: none;
        overflow: visible;
    }
    
    .header__nav-list {
        flex-direction: row;
        gap: var(--spacing-1);
    }
    
    .header__nav-link {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: var(--font-size-sm);
    }
    
    .header__nav-link i {
        display: none;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero__background {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero__gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(var(--color-primary-rgb), 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 0%, rgba(var(--color-primary-rgb), 0.1) 0%, transparent 50%);
}

.hero__particles {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, var(--color-primary) 1px, transparent 1px),
        radial-gradient(circle at 80% 70%, var(--color-secondary) 1px, transparent 1px),
        radial-gradient(circle at 50% 50%, var(--color-accent) 1px, transparent 1px);
    background-size: 100px 100px, 150px 150px, 200px 200px;
    opacity: 0.3;
    animation: particles 20s linear infinite;
}

@keyframes particles {
    0% { transform: translateY(0); }
    100% { transform: translateY(-100px); }
}

.hero__container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
    display: grid;
    gap: var(--spacing-12);
    align-items: center;
}

.hero__content {
    text-align: center;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-6);
}

.hero__title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
}

.hero__title-gradient {
    display: block;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin-inline: auto;
    margin-bottom: var(--spacing-8);
}

.hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    justify-content: center;
    margin-bottom: var(--spacing-12);
}

.hero__stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-8);
}

.hero__stat {
    text-align: center;
}

.hero__stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
}

.hero__stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.hero__visual {
    display: none;
    position: relative;
    justify-content: center;
    align-items: center;
}

.hero__instrument {
    position: absolute;
    font-size: 4rem;
    animation: float 6s ease-in-out infinite;
}

.hero__instrument--guitar {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.hero__instrument--piano {
    bottom: 20%;
    right: 20%;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.hero__notes {
    position: absolute;
    inset: 0;
}

.hero__note {
    position: absolute;
    font-size: 2rem;
    opacity: 0.5;
    animation: noteFloat 4s ease-in-out infinite;
}

.hero__note:nth-child(1) { top: 10%; left: 10%; animation-delay: 0s; }
.hero__note:nth-child(2) { top: 30%; right: 20%; animation-delay: 1s; }
.hero__note:nth-child(3) { bottom: 30%; left: 30%; animation-delay: 2s; }
.hero__note:nth-child(4) { bottom: 10%; right: 10%; animation-delay: 3s; }

@keyframes noteFloat {
    0%, 100% { transform: translateY(0) scale(1); opacity: 0.5; }
    50% { transform: translateY(-30px) scale(1.2); opacity: 0.8; }
}

.hero__scroll-indicator {
    position: absolute;
    bottom: var(--spacing-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

@media (min-width: 1024px) {
    .hero__container {
        grid-template-columns: 1fr 1fr;
        text-align: left;
    }
    
    .hero__content {
        text-align: left;
    }
    
    .hero__cta,
    .hero__stats {
        justify-content: flex-start;
    }
    
    .hero__description {
        margin-inline: 0;
    }
    
    .hero__visual {
        display: flex;
        min-height: 400px;
    }
}

/* ============================================
   Section Header
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-12);
}

.section-header--left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    text-align: left;
}

.section-header__icon {
    font-size: var(--font-size-3xl);
}

.section-header--left .section-header__title {
    font-size: var(--font-size-2xl);
}

.section-header--left .section-header__description {
    margin-top: var(--spacing-1);
}

.section-header__link {
    margin-left: auto;
    font-weight: 500;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.section-header__badge {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.1), rgba(6, 182, 212, 0.1));
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-4);
}

.section-header__title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
}

.section-header__description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin-inline: auto;
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: var(--spacing-20) 0;
    background: var(--bg-secondary);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
}

.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-slow);
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.feature-card__icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-6);
}

.feature-card__icon--cifras {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
    color: white;
}

.feature-card__icon--video {
    background: linear-gradient(135deg, #ef4444, #f87171);
    color: white;
}

.feature-card__icon--artigos {
    background: linear-gradient(135deg, #06b6d4, #22d3ee);
    color: white;
}

.feature-card__icon--dicionario {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: white;
}

.feature-card__icon--curiosidades {
    background: linear-gradient(135deg, #10b981, #34d399);
    color: white;
}

.feature-card__icon--teoria {
    background: linear-gradient(135deg, #ec4899, #f472b6);
    color: white;
}

.feature-card__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-3);
}

.feature-card__description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-6);
    line-height: 1.7;
}

.feature-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    font-weight: 600;
    color: var(--color-primary);
    transition: gap var(--transition-base);
}

.feature-card__link:hover {
    gap: var(--spacing-3);
}

/* ============================================
   Popular Cifras Section
   ============================================ */
.popular-cifras {
    padding: var(--spacing-20) 0;
}

.cifras-carousel {
    position: relative;
    margin-bottom: var(--spacing-8);
}

.cifras-carousel__track {
    display: flex;
    gap: var(--spacing-6);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: var(--spacing-4) 0;
}

.cifras-carousel__track::-webkit-scrollbar {
    display: none;
}

.cifra-card {
    flex: 0 0 280px;
    scroll-snap-align: start;
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    transition: all var(--transition-base);
}

.cifra-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.cifra-card__rank {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    flex-shrink: 0;
}

.cifra-card__content {
    flex: 1;
    min-width: 0;
}

.cifra-card__genre {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-2);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-2);
}

.cifra-card__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: var(--spacing-1);
}

.cifra-card__artist {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: var(--spacing-2);
}

.cifra-card__meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-xs);
}

.cifra-card__difficulty {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.cifra-card__difficulty--easy { color: var(--color-success); }
.cifra-card__difficulty--medium { color: var(--color-warning); }
.cifra-card__difficulty--hard { color: var(--color-error); }

.cifra-card__key {
    color: var(--text-tertiary);
}

.cifra-card__link {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    flex-shrink: 0;
    transition: all var(--transition-base);
}

.cifra-card__link:hover {
    background: var(--color-primary);
    color: white;
}

.cifras-carousel__controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-4);
    margin-top: var(--spacing-6);
}

.cifras-carousel__btn {
    width: 48px;
    height: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.cifras-carousel__btn:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-8);
}

/* ============================================
   Video Cards
   ============================================ */
.latest-videoaulas {
    padding: var(--spacing-20) 0;
    background: var(--bg-secondary);
}

.videoaulas-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.video-card {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.video-card__thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    background: var(--bg-tertiary);
    overflow: hidden;
}

.video-card__thumbnail-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--text-tertiary);
    opacity: 0.5;
}

.video-card__duration {
    position: absolute;
    bottom: var(--spacing-3);
    right: var(--spacing-3);
    padding: var(--spacing-1) var(--spacing-2);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.video-card__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    opacity: 0;
    transition: all var(--transition-base);
}

.video-card:hover .video-card__play {
    opacity: 1;
}

.video-card__content {
    padding: var(--spacing-6);
}

.video-card__tags {
    display: flex;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
}

.video-card__tag {
    padding: var(--spacing-1) var(--spacing-2);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.video-card__tag--violao { background: rgba(139, 92, 246, 0.1); color: var(--color-primary); }
.video-card__tag--teclado { background: rgba(6, 182, 212, 0.1); color: var(--color-secondary); }
.video-card__tag--teoria { background: rgba(236, 72, 153, 0.1); color: #ec4899; }
.video-card__tag--ritmo { background: rgba(245, 158, 11, 0.1); color: var(--color-accent); }
.video-card__tag--nivel { background: rgba(16, 185, 129, 0.1); color: var(--color-success); }

.video-card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card__description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card__meta {
    display: flex;
    gap: var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.video-card--featured {
    grid-column: 1 / -1;
}

@media (min-width: 768px) {
    .videoaulas-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .video-card--featured {
        grid-column: 1 / -1;
        display: grid;
        grid-template-columns: 1.5fr 1fr;
    }
    
    .video-card--featured .video-card__thumbnail {
        aspect-ratio: auto;
        min-height: 300px;
    }
}

@media (min-width: 1024px) {
    .videoaulas-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .video-card--featured {
        grid-column: 1 / 3;
        grid-row: 1 / 3;
    }
}

/* ============================================
   Articles Preview
   ============================================ */
.articles-preview {
    padding: var(--spacing-20) 0;
}

.articles-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.article-card {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.article-card__image {
    aspect-ratio: 16/9;
    background: var(--bg-tertiary);
    position: relative;
}

.article-card__image-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--text-tertiary);
    opacity: 0.5;
}

.article-card__content {
    padding: var(--spacing-6);
}

.article-card__meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-3);
}

.article-card__category {
    padding: var(--spacing-1) var(--spacing-2);
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.1), rgba(6, 182, 212, 0.1));
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-primary);
}

.article-card__date {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.article-card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-3);
}

.article-card__title a {
    transition: color var(--transition-base);
}

.article-card__title a:hover {
    color: var(--color-primary);
}

.article-card__excerpt {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.article-card__read-time {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.article-card__link {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
}

.article-card--featured {
    grid-column: 1 / -1;
}

@media (min-width: 768px) {
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .article-card--featured {
        grid-column: 1 / -1;
        display: grid;
        grid-template-columns: 1.2fr 1fr;
    }
    
    .article-card--featured .article-card__image {
        aspect-ratio: auto;
        min-height: 300px;
    }
    
    .article-card--featured .article-card__content {
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
}

@media (min-width: 1024px) {
    .articles-grid {
        grid-template-columns: 1.5fr 1fr 1fr;
        grid-template-rows: repeat(2, auto);
    }
    
    .article-card--featured {
        grid-column: 1;
        grid-row: 1 / 3;
        display: block;
    }
    
    .article-card--featured .article-card__image {
        aspect-ratio: 4/3;
    }
    
    .article-card:not(.article-card--featured) {
        display: flex;
        gap: var(--spacing-4);
    }
    
    .article-card:not(.article-card--featured) .article-card__image {
        width: 100px;
        height: 100px;
        aspect-ratio: 1;
        flex-shrink: 0;
        border-radius: var(--radius-lg);
    }
    
    .article-card__image-placeholder--small {
        font-size: 2rem !important;
    }
    
    .article-card:not(.article-card--featured) .article-card__content {
        padding: var(--spacing-3);
    }
    
    .article-card:not(.article-card--featured) .article-card__title {
        font-size: var(--font-size-base);
    }
    
    .article-card:not(.article-card--featured) .article-card__excerpt {
        display: none;
    }
}

/* ============================================
   Curiosities Preview
   ============================================ */
.curiosities-preview {
    padding: var(--spacing-20) 0;
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.05), rgba(6, 182, 212, 0.05));
}

.curiosities-slider {
    position: relative;
    max-width: 800px;
    margin-inline: auto;
    margin-bottom: var(--spacing-8);
}

.curiosity-card {
    display: none;
    text-align: center;
    padding: var(--spacing-8);
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
}

.curiosity-card--active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.curiosity-card__icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-6);
}

.curiosity-card__text {
    font-size: var(--font-size-xl);
    line-height: 1.7;
    color: var(--text-primary);
    font-style: italic;
    margin-bottom: var(--spacing-4);
}

.curiosity-card__source {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.curiosities-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-4);
}

.curiosities-control {
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.curiosities-control:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.curiosities-dots {
    display: flex;
    gap: var(--spacing-2);
}

.curiosities-dot {
    width: 12px;
    height: 12px;
    background: var(--border-color);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.curiosities-dot--active {
    background: var(--color-primary);
    transform: scale(1.2);
}

/* ============================================
   Newsletter Section
   ============================================ */
.newsletter {
    padding: var(--spacing-20) 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
}

.newsletter__content {
    text-align: center;
    max-width: 600px;
    margin-inline: auto;
}

.newsletter__icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-4);
}

.newsletter__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
}

.newsletter__description {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-8);
}

.newsletter__form {
    max-width: 450px;
    margin-inline: auto;
}

.newsletter__input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.newsletter__input {
    flex: 1;
    padding: var(--spacing-4);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    background: rgba(255, 255, 255, 0.95);
    color: var(--text-primary);
}

.newsletter__input::placeholder {
    color: var(--text-tertiary);
}

.newsletter__submit {
    background: var(--text-primary);
    color: white;
}

.newsletter__privacy {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    margin-top: var(--spacing-4);
}

@media (min-width: 768px) {
    .newsletter__input-group {
        flex-direction: row;
    }
    
    .newsletter__input {
        border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    }
    
    .newsletter__submit {
        border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    }
}

.newsletter--compact {
    padding: var(--spacing-16) 0;
}

.newsletter--compact .newsletter__title {
    font-size: var(--font-size-2xl);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-16) 0 var(--spacing-8);
    border-top: 1px solid var(--border-color);
}

.footer__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-12);
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
}

.footer__logo-icon {
    font-size: var(--font-size-2xl);
}

.footer__logo-accent {
    color: var(--color-primary);
}

.footer__description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-6);
    max-width: 300px;
}

.footer__social {
    display: flex;
    gap: var(--spacing-3);
}

.footer__social-link {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.footer__social-link:hover {
    background: var(--color-primary);
    color: white;
}

.footer__nav-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
}

.footer__nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer__nav-list a {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
}

.footer__nav-list a:hover {
    color: var(--color-primary);
}

.footer__bottom {
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer__copyright {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-2);
}

.footer__heart {
    color: var(--color-error);
}

.footer__credits {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.footer__credits a {
    color: var(--text-secondary);
    transition: color var(--transition-base);
}

.footer__credits a:hover {
    color: var(--color-primary);
}

@media (min-width: 768px) {
    .footer__grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
    
    .footer__bottom {
        display: flex;
        justify-content: space-between;
        text-align: left;
    }
    
    .footer__copyright {
        margin-bottom: 0;
    }
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-6);
    right: var(--spacing-6);
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-sticky);
}

.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-4px);
}

/* ============================================
   Page Hero (Internal Pages)
   ============================================ */
.page-hero {
    position: relative;
    padding: calc(var(--header-height) + var(--spacing-12)) 0 var(--spacing-12);
    overflow: hidden;
}

.page-hero__background {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.page-hero__gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(var(--color-primary-rgb), 0.1) 0%, 
        rgba(6, 182, 212, 0.05) 50%,
        transparent 100%);
}

.page-hero--cifras .page-hero__gradient {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(168, 85, 247, 0.05));
}

.page-hero--videoaulas .page-hero__gradient {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(248, 113, 113, 0.05));
}

.page-hero--artigos .page-hero__gradient {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(34, 211, 238, 0.05));
}

.page-hero--dicionario .page-hero__gradient {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(251, 191, 36, 0.05));
}

.page-hero--curiosidades .page-hero__gradient {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(52, 211, 153, 0.05));
}

.page-hero__content {
    max-width: 800px;
}

.page-hero__title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.page-hero__title i {
    color: var(--color-primary);
}

.page-hero__description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: var(--spacing-4);
}

.breadcrumb__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
}

.breadcrumb__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.breadcrumb__item:not(:last-child)::after {
    content: '/';
    color: var(--text-tertiary);
}

.breadcrumb__item a {
    color: var(--text-secondary);
    transition: color var(--transition-base);
}

.breadcrumb__item a:hover {
    color: var(--color-primary);
}

.breadcrumb__item--active {
    color: var(--text-primary);
    font-weight: 500;
}

/* ============================================
   Cifras Page Styles
   ============================================ */
.cifras-search {
    padding: var(--spacing-8) 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: var(--header-height);
    z-index: var(--z-sticky);
}

.cifras-search__wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.cifras-search__form {
    flex: 1;
}

.cifras-search__input-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3) var(--spacing-4);
    transition: border-color var(--transition-base);
}

.cifras-search__input-group:focus-within {
    border-color: var(--color-primary);
}

.cifras-search__input-group i {
    color: var(--text-tertiary);
}

.cifras-search__input {
    flex: 1;
    border: none;
    background: none;
    font-size: var(--font-size-base);
    outline: none;
}

.cifras-search__clear {
    padding: var(--spacing-1);
    color: var(--text-tertiary);
}

.cifras-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
}

.cifras-filters__group {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.cifras-filters__label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.cifras-filters__select {
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    cursor: pointer;
}

.cifras-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-top: var(--spacing-4);
}

.cifras-tag {
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-base);
}

.cifras-tag:hover,
.cifras-tag--active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

@media (min-width: 768px) {
    .cifras-search__wrapper {
        flex-direction: row;
        align-items: center;
    }
}

/* Cifras List */
.cifras-list {
    padding: var(--spacing-12) 0;
}

.cifras-results {
    margin-bottom: var(--spacing-6);
}

.cifras-results__count {
    color: var(--text-secondary);
}

.cifras-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-12);
}

.cifra-item {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.cifra-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.cifra-item__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-4);
}

.cifra-item__genre {
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.cifra-item__genre--rock { background: rgba(239, 68, 68, 0.1); color: #ef4444; }
.cifra-item__genre--pop { background: rgba(236, 72, 153, 0.1); color: #ec4899; }
.cifra-item__genre--mpb { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.cifra-item__genre--sertanejo { background: rgba(245, 158, 11, 0.1); color: #f59e0b; }
.cifra-item__genre--gospel { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.cifra-item__genre--internacional { background: rgba(6, 182, 212, 0.1); color: #06b6d4; }

.cifra-item__favorite {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-tertiary);
    transition: all var(--transition-base);
}

.cifra-item__favorite:hover,
.cifra-item__favorite.is-active {
    color: var(--color-error);
    background: rgba(239, 68, 68, 0.1);
}

.cifra-item__content {
    flex: 1;
    margin-bottom: var(--spacing-4);
}

.cifra-item__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-1);
}

.cifra-item__artist {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3);
}

.cifra-item__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    font-size: var(--font-size-sm);
}

.cifra-item__difficulty {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.cifra-item__difficulty--easy { color: var(--color-success); }
.cifra-item__difficulty--medium { color: var(--color-warning); }
.cifra-item__difficulty--hard { color: var(--color-error); }

.cifra-item__key,
.cifra-item__views {
    color: var(--text-tertiary);
}

.cifra-item__view {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    font-weight: 600;
    color: var(--color-primary);
    transition: all var(--transition-base);
}

.cifra-item__view:hover {
    background: var(--color-primary);
    color: white;
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
}

.pagination__btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.pagination__btn:hover:not(:disabled) {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.pagination__btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination__numbers {
    display: flex;
    gap: var(--spacing-1);
}

.pagination__number {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-weight: 500;
    transition: all var(--transition-base);
}

.pagination__number:hover,
.pagination__number--active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.pagination__ellipsis {
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-2);
    color: var(--text-tertiary);
}

/* ============================================
   Cifra Modal
   ============================================ */
.cifra-modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
}

.cifra-modal[hidden] {
    display: none;
}

.cifra-modal__overlay {
    position: absolute;
    inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(4px);
}

.cifra-modal__container {
    position: relative;
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.cifra-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--border-color);
}

.cifra-modal__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.cifra-modal__artist {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.cifra-modal__close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.cifra-modal__close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.cifra-modal__toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    padding: var(--spacing-4) var(--spacing-6);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.cifra-modal__transpose,
.cifra-modal__font-size {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.cifra-modal__label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.cifra-modal__transpose-btn,
.cifra-modal__font-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
}

.cifra-modal__transpose-btn:hover,
.cifra-modal__font-btn:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.cifra-modal__key {
    min-width: 40px;
    text-align: center;
    font-weight: 600;
    color: var(--color-primary);
}

.cifra-modal__actions {
    display: flex;
    gap: var(--spacing-2);
    margin-left: auto;
}

.cifra-modal__action {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.cifra-modal__action:hover {
    background: var(--bg-card);
    color: var(--color-primary);
}

.cifra-modal__action--scroll.is-active {
    background: var(--color-primary);
    color: white;
}

.cifra-modal__content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-6);
}

.cifra-modal__cifra {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: 2;
    white-space: pre-wrap;
}

.cifra-modal__cifra .chord {
    color: var(--color-primary);
    font-weight: 600;
    cursor: pointer;
    transition: color var(--transition-base);
}

.cifra-modal__cifra .chord:hover {
    color: var(--color-primary-dark);
}

.cifra-modal__footer {
    padding: var(--spacing-4) var(--spacing-6);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.cifra-modal__chords-used {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-3);
}

.cifra-modal__chord-list {
    display: flex;
    gap: var(--spacing-2);
}

.cifra-modal__chord {
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-primary);
    transition: all var(--transition-base);
}

.cifra-modal__chord:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* Chord Popup */
.chord-popup {
    position: fixed;
    z-index: var(--z-tooltip);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-4);
    min-width: 150px;
}

.chord-popup[hidden] {
    display: none;
}

.chord-popup__header {
    text-align: center;
    margin-bottom: var(--spacing-3);
}

.chord-popup__name {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.chord-popup__fullname {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.chord-popup__diagram {
    margin-bottom: var(--spacing-3);
}

.chord-diagram {
    width: 100%;
    max-width: 120px;
    margin: 0 auto;
    display: block;
}

.chord-popup__fingers {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* ============================================
   Video Categories
   ============================================ */
.video-categories {
    padding: var(--spacing-8) 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.video-categories__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-4);
}

.video-category {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-6);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 2px solid transparent;
    transition: all var(--transition-base);
}

.video-category:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.video-category__icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-3);
}

.video-category__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-1);
}

.video-category__count {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* Featured Video */
.featured-video {
    padding: var(--spacing-12) 0;
}

.featured-video__card {
    display: grid;
    gap: var(--spacing-8);
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.featured-video__player {
    position: relative;
}

.featured-video__thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    background: var(--bg-tertiary);
}

.featured-video__placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--text-tertiary);
    opacity: 0.3;
}

.featured-video__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    transition: all var(--transition-base);
}

.featured-video__play:hover {
    transform: translate(-50%, -50%) scale(1.1);
    box-shadow: var(--shadow-glow);
}

.featured-video__duration {
    position: absolute;
    bottom: var(--spacing-4);
    right: var(--spacing-4);
    padding: var(--spacing-2) var(--spacing-3);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.featured-video__content {
    padding: var(--spacing-8);
}

.featured-video__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.featured-video__tag {
    padding: var(--spacing-1) var(--spacing-3);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.featured-video__tag--level {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.featured-video__tag--new {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.featured-video__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
}

.featured-video__description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-6);
    line-height: 1.7;
}

.featured-video__topics {
    margin-bottom: var(--spacing-6);
}

.featured-video__topics li {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-2) 0;
    color: var(--text-secondary);
}

.featured-video__topics i {
    color: var(--color-success);
}

.featured-video__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

@media (min-width: 1024px) {
    .featured-video__card {
        grid-template-columns: 1.2fr 1fr;
    }
    
    .featured-video__thumbnail {
        aspect-ratio: auto;
        min-height: 400px;
    }
    
    .featured-video__content {
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
}

/* Video Section */
.video-section {
    padding: var(--spacing-12) 0;
}

.video-section--alt {
    background: var(--bg-secondary);
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-6);
}

.video-card-alt {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.video-card-alt:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.video-card-alt__thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    background: var(--bg-tertiary);
}

.video-card-alt__placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--text-tertiary);
    opacity: 0.4;
}

.video-card-alt__duration {
    position: absolute;
    bottom: var(--spacing-2);
    right: var(--spacing-2);
    padding: var(--spacing-1) var(--spacing-2);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.video-card-alt__level {
    position: absolute;
    top: var(--spacing-2);
    left: var(--spacing-2);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.video-card-alt__level--iniciante {
    background: rgba(16, 185, 129, 0.9);
    color: white;
}

.video-card-alt__level--intermediario {
    background: rgba(245, 158, 11, 0.9);
    color: white;
}

.video-card-alt__level--avancado {
    background: rgba(239, 68, 68, 0.9);
    color: white;
}

.video-card-alt__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    opacity: 0;
    transition: all var(--transition-base);
}

.video-card-alt:hover .video-card-alt__play {
    opacity: 1;
}

.video-card-alt__content {
    padding: var(--spacing-4);
}

.video-card-alt__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card-alt__description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card-alt__meta {
    display: flex;
    gap: var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* Learning Path */
.learning-path {
    padding: var(--spacing-16) 0;
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.05), rgba(6, 182, 212, 0.05));
}

.learning-path__timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
    max-width: 600px;
    margin-inline: auto;
}

.learning-path__step {
    display: flex;
    gap: var(--spacing-4);
    padding: var(--spacing-6);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
}

.learning-path__step:hover {
    border-color: var(--color-primary);
}

.learning-path__step--active {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.learning-path__step-marker {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-tertiary);
    flex-shrink: 0;
}

.learning-path__step--active .learning-path__step-marker {
    background: var(--color-primary);
    color: white;
}

.learning-path__step-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.learning-path__step-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
}

.learning-path__step-duration {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* ============================================
   Article Categories
   ============================================ */
.article-categories {
    padding: var(--spacing-6) 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: var(--header-height);
    z-index: var(--z-sticky);
}

.article-categories__list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    justify-content: center;
}

.article-category {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-base);
}

.article-category:hover,
.article-category--active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* Featured Article */
.featured-article {
    padding: var(--spacing-12) 0;
}

.article-featured {
    display: grid;
    gap: var(--spacing-8);
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.article-featured__image {
    position: relative;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
}

.article-featured__placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: white;
    opacity: 0.3;
}

.article-featured__category {
    position: absolute;
    top: var(--spacing-4);
    left: var(--spacing-4);
    padding: var(--spacing-2) var(--spacing-4);
    background: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
}

.article-featured__content {
    padding: var(--spacing-8);
}

.article-featured__meta {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.article-featured__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
    line-height: 1.3;
}

.article-featured__excerpt {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-6);
}

.article-featured__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-6);
}

.article-tag {
    padding: var(--spacing-1) var(--spacing-3);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

@media (min-width: 1024px) {
    .article-featured {
        grid-template-columns: 1fr 1fr;
    }
    
    .article-featured__image {
        aspect-ratio: auto;
        min-height: 400px;
    }
    
    .article-featured__content {
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
}

/* Articles Grid Full */
.articles-section {
    padding: var(--spacing-12) 0;
    background: var(--bg-secondary);
}

.articles-grid-full {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.article-card-full {
    display: grid;
    grid-template-columns: 1fr;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.article-card-full:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.article-card-full__image {
    aspect-ratio: 16/9;
    background: var(--bg-tertiary);
    position: relative;
}

.article-card-full__placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--text-tertiary);
    opacity: 0.3;
}

.article-card-full__content {
    padding: var(--spacing-6);
}

.article-card-full__meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
}

.article-card-full__category {
    padding: var(--spacing-1) var(--spacing-2);
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.1), rgba(6, 182, 212, 0.1));
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-primary);
}

.article-card-full__date {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.article-card-full__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-3);
}

.article-card-full__title a {
    transition: color var(--transition-base);
}

.article-card-full__title a:hover {
    color: var(--color-primary);
}

.article-card-full__excerpt {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card-full__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.article-card-full__read-time {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.article-card-full__link {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
}

@media (min-width: 768px) {
    .articles-grid-full {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .article-card-full {
        grid-template-columns: 200px 1fr;
    }
    
    .article-card-full__image {
        aspect-ratio: 1;
    }
}

@media (min-width: 1024px) {
    .articles-grid-full {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .article-card-full {
        grid-template-columns: 1fr;
    }
    
    .article-card-full__image {
        aspect-ratio: 16/9;
    }
}

.articles-load-more {
    text-align: center;
}

/* ============================================
   Dictionary Page Styles
   ============================================ */
.instrument-selector {
    padding: var(--spacing-6) 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.instrument-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-4);
}

.instrument-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4) var(--spacing-8);
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-weight: 600;
    transition: all var(--transition-base);
}

.instrument-tab:hover {
    border-color: var(--color-primary);
}

.instrument-tab--active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.instrument-tab__icon {
    font-size: var(--font-size-xl);
}

/* Note Selector */
.note-selector {
    padding: var(--spacing-8) 0;
}

.note-selector__title {
    text-align: center;
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-6);
    color: var(--text-secondary);
}

.note-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-2);
}

.note-btn {
    min-width: 80px;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all var(--transition-base);
}

.note-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.note-btn--active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* Chord Types Section */
.chord-types-section {
    padding: var(--spacing-12) 0;
    background: var(--bg-secondary);
}

.chord-types-section__title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-8);
}

.chord-types-section__title span {
    color: var(--color-primary);
}

.chord-panel[hidden] {
    display: none;
}

.chord-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-6);
}

/* Chord Card */
.chord-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-4);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    text-align: center;
}

.chord-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.chord-card__header {
    margin-bottom: var(--spacing-3);
}

.chord-card__name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

.chord-card__fullname {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.chord-card__diagram {
    margin-bottom: var(--spacing-3);
}

.chord-svg {
    width: 100%;
    max-width: 120px;
    height: auto;
    margin: 0 auto;
}

.chord-card__info {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chord-card__fingers {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.chord-card__play {
    width: 36px;
    height: 36px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    transition: all var(--transition-base);
}

.chord-card__play:hover {
    background: var(--color-primary);
    color: white;
}

/* Piano Section */
.piano-section__title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-6);
}

.piano-section__title span {
    color: var(--color-primary);
}

.piano-chords-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-6);
}

.piano-chord-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.piano-chord-card__name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.piano-chord-card__notes {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
}

.piano-keyboard {
    display: flex;
    height: 100px;
    margin-bottom: var(--spacing-4);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.piano-key {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.piano-key--white {
    flex: 1;
    background: white;
    border: 1px solid var(--border-color);
    color: var(--text-tertiary);
}

.piano-key--black {
    width: 30px;
    height: 60px;
    background: #1e293b;
    margin-left: -15px;
    margin-right: -15px;
    z-index: 1;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    color: white;
    font-size: 8px;
}

.piano-key--active.piano-key--white {
    background: var(--color-primary);
    color: white;
}

.piano-key--active.piano-key--black {
    background: var(--color-primary-dark);
}

.piano-chord-card__formula {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* Theory Section */
.chord-theory {
    padding: var(--spacing-16) 0;
}

.theory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
}

.theory-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.theory-card__icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-4);
}

.theory-card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-3);
}

.theory-card__text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   Curiosities Page Styles
   ============================================ */
.curiosity-categories {
    padding: var(--spacing-6) 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.curiosity-categories__list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    justify-content: center;
}

.curiosity-category {
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-base);
}

.curiosity-category:hover,
.curiosity-category--active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* Featured Curiosity */
.featured-curiosity {
    padding: var(--spacing-12) 0;
}

.curiosity-hero {
    max-width: 900px;
    margin-inline: auto;
    text-align: center;
    padding: var(--spacing-12);
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.1), rgba(6, 182, 212, 0.1));
    border-radius: var(--radius-2xl);
}

.curiosity-hero__badge {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-6);
}

.curiosity-hero__title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-6);
}

.curiosity-hero__text {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-6);
}

.curiosity-hero__meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-6);
    flex-wrap: wrap;
}

.curiosity-hero__category {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.share-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-base);
}

.share-btn:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* Curiosities Grid */
.curiosities-section {
    padding: var(--spacing-12) 0;
    background: var(--bg-secondary);
}

.curiosities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.curiosity-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.curiosity-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.curiosity-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-4);
}

.curiosity-card__icon {
    font-size: 2rem;
}

.curiosity-card__category {
    padding: var(--spacing-1) var(--spacing-3);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
}

.curiosity-card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-3);
}

.curiosity-card__text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-4);
}

.curiosity-card__footer {
    display: flex;
    justify-content: flex-end;
}

.curiosity-card__like {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.curiosity-card__like:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.curiosities-load-more {
    text-align: center;
}

/* Fun Facts Ticker */
.fun-facts-ticker {
    padding: var(--spacing-8) 0;
    background: var(--color-primary);
    color: white;
    overflow: hidden;
}

.fun-facts-ticker__title {
    text-align: center;
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-4);
}

.ticker-wrapper {
    overflow: hidden;
}

.ticker {
    display: flex;
    animation: ticker 30s linear infinite;
}

.ticker__item {
    flex-shrink: 0;
    padding: 0 var(--spacing-8);
    white-space: nowrap;
    font-size: var(--font-size-base);
}

@keyframes ticker {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Quiz Teaser */
.quiz-teaser {
    padding: var(--spacing-16) 0;
}

.quiz-teaser__content {
    max-width: 600px;
    margin-inline: auto;
    text-align: center;
}

.quiz-teaser__icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-4);
}

.quiz-teaser__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
}

.quiz-teaser__text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-6);
}

/* Quiz Modal */
.quiz-modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
}

.quiz-modal[hidden] {
    display: none;
}

.quiz-modal__overlay {
    position: absolute;
    inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(4px);
}

.quiz-modal__container {
    position: relative;
    width: 100%;
    max-width: 600px;
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-8);
}

.quiz-modal__close {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.quiz-modal__close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.quiz-progress {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-6);
    overflow: hidden;
}

.quiz-progress__bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.quiz-question-number {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-4);
}

.quiz-question {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-6);
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.quiz-option {
    padding: var(--spacing-4);
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    text-align: left;
    font-weight: 500;
    transition: all var(--transition-base);
}

.quiz-option:hover {
    border-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.1);
}

.quiz-option--correct {
    border-color: var(--color-success);
    background: rgba(16, 185, 129, 0.1);
}

.quiz-option--wrong {
    border-color: var(--color-error);
    background: rgba(239, 68, 68, 0.1);
}

.quiz-result[hidden] {
    display: none;
}

.quiz-result {
    text-align: center;
}

.quiz-result__icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-4);
}

.quiz-result__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
}

.quiz-result__score {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2);
}

.quiz-result__message {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-6);
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .header,
    .footer,
    .back-to-top,
    .search-overlay,
    .cifra-modal__toolbar,
    .cifra-modal__footer {
        display: none !important;
    }
    
    .cifra-modal {
        position: static;
        padding: 0;
    }
    
    .cifra-modal__overlay {
        display: none;
    }
    
    .cifra-modal__container {
        max-width: 100%;
        box-shadow: none;
    }
    
    .cifra-modal__cifra {
        font-size: 12pt;
        line-height: 1.8;
    }
}

/* ============================================
   Animations
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
    .fade-in {
        animation: fadeIn 0.5s ease forwards;
    }
    
    .slide-up {
        animation: slideUp 0.5s ease forwards;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}