/* Estilos principais do Gerador de Folhas Personalizadas */

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --light-bg: #f8fafc;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--light-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-color), #3b82f6) !important;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
}

header p {
    font-size: 1rem;
    opacity: 0.9;
}

/* Painel de Controle */
.bg-light {
    background-color: #ffffff !important;
    border-right: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.form-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-select, .form-control {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.625rem 0.75rem;
    font-size: 0.875rem;
    transition: var(--transition);
    background-color: #ffffff;
}

.form-select:focus, .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
    outline: none;
}

.form-range {
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
}

.form-range::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.form-range::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.form-range::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-sm);
}

/* Botões */
.btn {
    border-radius: 8px;
    font-weight: 600;
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    transition: var(--transition);
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, #1d4ed8, #2563eb);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
    box-shadow: var(--shadow-sm);
}

.btn-success:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, #059669, #10b981);
}

.btn-outline-secondary {
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    background: #ffffff;
}

.btn-outline-secondary:hover {
    background: var(--light-bg);
    border-color: var(--secondary-color);
    color: var(--text-primary);
}

/* Área de Visualização */
.preview-container {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    overflow: auto;
    border: 1px solid var(--border-color);
}

.paper-canvas {
    display: block;
    margin: 0 auto;
    background: #ffffff;
    box-shadow: var(--shadow-md);
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

/* Controles de Zoom */
.btn-group .btn {
    border-radius: 0;
    border: 1px solid var(--border-color);
    background: #ffffff;
    color: var(--text-secondary);
    min-width: 40px;
    padding: 0.5rem;
}

.btn-group .btn:first-child {
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}

.btn-group .btn:last-child {
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
}

.btn-group .btn:hover {
    background: var(--light-bg);
    color: var(--text-primary);
}

/* Notificações */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    min-width: 250px;
    max-width: 400px;
    border: none;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    font-weight: 500;
}

.alert-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    border: none;
}

.alert-info {
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    color: white;
    border: none;
}

/* Responsividade */
@media (max-width: 991px) {
    .col-lg-3 {
        order: 2;
    }
    
    .col-lg-9 {
        order: 1;
    }
    
    .preview-container {
        padding: 1rem;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .btn {
        font-size: 0.75rem;
        padding: 0.5rem 0.75rem;
    }
}

@media (max-width: 576px) {
    .container-fluid {
        padding: 0;
    }
    
    .p-4 {
        padding: 1rem !important;
    }
    
    .preview-container {
        padding: 0.5rem;
        margin-bottom: 1rem;
    }
    
    .btn-group .btn {
        min-width: 35px;
        padding: 0.375rem;
    }
    
    header h1 {
        font-size: 1.25rem;
    }
    
    header p {
        font-size: 0.875rem;
    }
}

/* Animações */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Estado de carregamento */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

/* Tema escuro (opcional) */
@media (prefers-color-scheme: dark) {
    :root {
        --light-bg: #0f172a;
        --text-primary: #f1f5f9;
        --text-secondary: #94a3b8;
        --border-color: #334155;
    }
    
    .bg-light {
        background-color: #1e293b !important;
    }
    
    .preview-container {
        background: #1e293b;
        border-color: var(--border-color);
    }
    
    .form-select, .form-control {
        background-color: #334155;
        border-color: var(--border-color);
        color: var(--text-primary);
    }
    
    .form-select:focus, .form-control:focus {
        background-color: #475569;
    }
}

/* Melhorias de acessibilidade */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Foco visível para navegação por teclado */
.form-select:focus-visible,
.form-control:focus-visible,
.btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Impressão */
@media print {
    header,
    .col-lg-3,
    .btn-group {
        display: none !important;
    }
    
    .preview-container {
        box-shadow: none;
        border: none;
        padding: 0;
    }
    
    .paper-canvas {
        box-shadow: none;
        border: 1px solid #000;
    }
}