/* =====================================================
   FONT AWESOME ICON SEARCH - CSS PRINCIPAL
   Autor: Arquiteto Web Sênior
   Data: 2024
   ===================================================== */

/* =====================================================
   CUSTOM PROPERTIES (VARIÁVEIS CSS)
   ===================================================== */
:root {
  /* Cores principais */
  --color-primary: #1e40af;
  --color-primary-light: #3b82f6;
  --color-primary-dark: #1e3a8a;
  --color-secondary: #f59e0b;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  
  /* Cores neutras */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Cores de fundo */
  --bg-primary: var(--color-white);
  --bg-secondary: var(--color-gray-50);
  --bg-tertiary: var(--color-gray-100);
  
  /* Cores de texto */
  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-600);
  --text-tertiary: var(--color-gray-400);
  --text-inverse: var(--color-white);
  
  /* Tipografia */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;      /* 12px */
  --font-size-sm: 0.875rem;     /* 14px */
  --font-size-base: 1rem;        /* 16px */
  --font-size-lg: 1.125rem;      /* 18px */
  --font-size-xl: 1.25rem;      /* 20px */
  --font-size-2xl: 1.5rem;        /* 24px */
  --font-size-3xl: 1.875rem;      /* 30px */
  --font-size-4xl: 2.25rem;       /* 36px */
  --font-size-5xl: 3rem;          /* 48px */
  
  /* Pesos de fonte */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Espaçamento */
  --spacing-xs: 0.25rem;        /* 4px */
  --spacing-sm: 0.5rem;         /* 8px */
  --spacing-md: 1rem;           /* 16px */
  --spacing-lg: 1.5rem;         /* 24px */
  --spacing-xl: 2rem;           /* 32px */
  --spacing-2xl: 2.5rem;        /* 40px */
  --spacing-3xl: 3rem;          /* 48px */
  
  /* Bordas */
  --border-radius-sm: 0.25rem;   /* 4px */
  --border-radius-md: 0.5rem;   /* 8px */
  --border-radius-lg: 0.75rem;  /* 12px */
  --border-radius-xl: 1rem;      /* 16px */
  --border-radius-full: 9999px;
  
  /* Sombras */
  --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 -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transições */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* =====================================================
   DARK MODE
   ===================================================== */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: var(--color-gray-900);
    --bg-secondary: var(--color-gray-800);
    --bg-tertiary: var(--color-gray-700);
    
    --text-primary: var(--color-gray-100);
    --text-secondary: var(--color-gray-300);
    --text-tertiary: var(--color-gray-500);
  }
}

[data-theme="dark"] {
  --bg-primary: var(--color-gray-900);
  --bg-secondary: var(--color-gray-800);
  --bg-tertiary: var(--color-gray-700);
  
  --text-primary: var(--color-gray-100);
  --text-secondary: var(--color-gray-300);
  --text-tertiary: var(--color-gray-500);
}

/* =====================================================
   RESET E ESTILOS BASE
   ===================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Remove estilos padrão de botões e inputs */
button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
  transition: all var(--transition-fast);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Imagens e SVGs */
img,
svg {
  max-width: 100%;
  height: auto;
}

/* Listas */
ul,
ol {
  list-style: none;
}

/* Focus visível para acessibilidade */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-gray-400);
  border-radius: var(--border-radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-500);
}

/* =====================================================
   LAYOUT GRID E CONTAINERS
   ===================================================== */
.container,
.nav__container,
.hero__container,
.icons__container,
.footer__container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* =====================================================
   HEADER E NAVEGAÇÃO
   ===================================================== */
.header {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--color-gray-200);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
}

[data-theme="dark"] .header {
  border-bottom-color: var(--color-gray-700);
}

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-md);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.nav__logo i {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
}

.nav__theme-toggle {
  display: flex;
  align-items: center;
}

.theme-toggle__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-full);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  transition: all var(--transition-normal);
}

.theme-toggle__btn:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: scale(1.1);
}

/* =====================================================
   HERO SECTION
   ===================================================== */
.hero {
  padding: var(--spacing-3xl) 0;
  text-align: center;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* =====================================================
   SEARCH CONTAINER
   ===================================================== */
.search-container {
  max-width: 600px;
  margin: 0 auto;
}

.search__box {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--bg-primary);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.search__box:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.search__icon {
  position: absolute;
  left: var(--spacing-lg);
  color: var(--text-tertiary);
  font-size: var(--font-size-lg);
}

.search__input {
  flex: 1;
  padding: 0 var(--spacing-md);
  font-size: var(--font-size-lg);
  color: var(--text-primary);
  background: transparent;
}

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

.search__clear {
  position: absolute;
  right: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius-full);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.search__clear:hover {
  background: var(--color-gray-400);
  color: var(--color-white);
}

.search__clear.visible {
  opacity: 1;
  visibility: visible;
}

.search__results-info {
  margin-top: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-align: left;
  padding-left: var(--spacing-lg);
}

/* =====================================================
   ICONS SECTION
   ===================================================== */
.icons {
  padding: var(--spacing-3xl) 0;
}

.icons__controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.view-toggle {
  display: flex;
  background: var(--bg-secondary);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-xs);
  gap: var(--spacing-xs);
}

.view-toggle__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

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

.view-toggle__btn.active {
  background: var(--color-primary);
  color: var(--color-white);
}

.sort-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.sort__label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
}

.sort__select {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sort__select:hover {
  border-color: var(--color-gray-300);
}

.sort__select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(30, 64, 175, 0.1);
}

/* =====================================================
   ICONS GRID
   ===================================================== */
.icons__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
}

.icons__grid.list-view {
  grid-template-columns: 1fr;
  gap: var(--spacing-sm);
}

.icon-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

[data-theme="dark"] .icon-card {
  border-color: var(--color-gray-700);
}

.icon-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.icon-card__icon {
  font-size: var(--font-size-3xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  transition: transform var(--transition-normal);
}

.icon-card:hover .icon-card__icon {
  transform: scale(1.1);
}

.icon-card__name {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-align: center;
  font-weight: var(--font-weight-medium);
  line-height: 1.3;
  word-break: break-word;
}

.icon-card__code {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-family: 'Courier New', monospace;
  text-align: center;
  transform: translateY(100%);
  transition: transform var(--transition-normal);
}

.icon-card:hover .icon-card__code {
  transform: translateY(0);
}

/* List view styles */
.icons__grid.list-view .icon-card {
  flex-direction: row;
  justify-content: flex-start;
  padding: var(--spacing-md);
  gap: var(--spacing-md);
}

.icons__grid.list-view .icon-card__icon {
  margin-bottom: 0;
  font-size: var(--font-size-xl);
}

.icons__grid.list-view .icon-card__name {
  flex: 1;
  text-align: left;
  font-size: var(--font-size-base);
}

.icons__grid.list-view .icon-card__code {
  position: static;
  transform: none;
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: var(--border-radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
}

/* =====================================================
   LOADING E ESTADOS
   ===================================================== */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
  text-align: center;
}

.loading__spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-gray-200);
  border-top: 3px solid var(--color-primary);
  border-radius: var(--border-radius-full);
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading__text {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
}

.no-results {
  text-align: center;
  padding: var(--spacing-3xl);
}

.no-results__icon {
  font-size: var(--font-size-5xl);
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-md);
}

.no-results__title {
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.no-results__text {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
}

/* =====================================================
   FOOTER
   ===================================================== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--color-gray-200);
  padding: var(--spacing-2xl) 0 var(--spacing-md);
  margin-top: auto;
}

[data-theme="dark"] .footer {
  border-top-color: var(--color-gray-700);
}

.footer__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.footer__description {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.footer__stats {
  display: flex;
  gap: var(--spacing-2xl);
}

.stat {
  text-align: center;
}

.stat__number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: 1;
}

.stat__label {
  display: block;
  font-size: var(---size-sm);
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-200);
}

[data-theme="dark"] .footer__bottom {
  border-top-color: var(--color-gray-700);
}

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

.footer__copyright i {
  color: var(--color-error);
}

/* =====================================================
   TOAST NOTIFICATIONS
   ===================================================== */
.toast {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  background: var(--color-gray-800);
  color: var(--color-white);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-toast);
  transform: translateX(400px);
  transition: transform var(--transition-normal);
  max-width: 300px;
}

.toast.show {
  transform: translateX(0);
}

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

.toast__icon {
  font-size: var(--font-size-lg);
}

.toast__message {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

/* Tipos de toast */
.toast.success {
  background: var(--color-success);
}

.toast.error {
  background: var(--color-error);
}

.toast.warning {
  background: var(--color-warning);
}

.toast.info {
  background: var(--color-primary);
}

/* =====================================================
   ANIMAÇÕES E UTILITÁRIOS
   ===================================================== */
.fade-in {
  animation: fadeIn var(--transition-normal) ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-up {
  animation: slideUp var(--transition-normal) ease-out;
}

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

/* Classe para esconder elementos visualmente mas manter para leitores de tela */
.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;
}