/* css/style.css */
:root {
    --primary: #3498db;
    --secondary: #2ecc71;
    --danger: #e74c3c;
    --warning: #f39c12;
    --dark: #2c3e50;
    --light: #ecf0f1;
    --gray: #95a5a6;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background: #f5f7fa;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--dark), var(--primary));
    color: white;
    padding: 1.5rem 0;
    margin-bottom: 2rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
}

/* Hero */
.hero {
    text-align: center;
    padding: 3rem 1rem;
    background: white;
    border-radius: 10px;
    margin-bottom: 2rem;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

.acoes-hero {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    flex-wrap: wrap;
}

/* Botões */
.btn {
    display: inline-block;
    padding: 0.6rem 1.5rem;
    border: none;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: var(--secondary);
    color: white;
}

.btn-secondary:hover {
    background: #27ae60;
}

.btn-small {
    padding: 0.4rem 1rem;
    font-size: 0.9rem;
}

/* Grids */
.disciplinas-grid, .conteudos-grid, .stats-grid {
    display: grid;
    gap: 1.5rem;
    margin: 2rem 0;
}

.disciplinas-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.conteudos-grid {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
}

.stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Cards */
.disciplina-card, .conteudo-card, .stat-card {
    background: white;
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
}

.disciplina-card:hover, .conteudo-card:hover {
    transform: translateY(-5px);
}

.disciplina-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

/* Formulários */
.upload-form, .form-container {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

/* Header do conteúdo */
.conteudo-header {
    background: var(--light);
    padding: 0.8rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: -1.5rem -1.5rem 1rem -1.5rem;
    border-radius: 10px 10px 0 0;
}

.badge {
    background: var(--primary);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge.verde { background: var(--secondary); }
.badge.vermelho { background: var(--danger); }

/* Informações do arquivo */
.arquivo-info {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 5px;
    margin: 1rem 0;
    border-left: 4px solid var(--primary);
}

.arquivo-link {
    font-family: monospace;
    font-size: 0.9rem;
    background: white;
    padding: 0.3rem 0.5rem;
    border-radius: 3px;
    border: 1px solid #ddd;
    display: inline-block;
    margin-top: 0.3rem;
    word-break: break-all;
}

/* Metadados */
.conteudo-meta {
    display: flex;
    justify-content: space-between;
    color: var(--gray);
    font-size: 0.9rem;
    margin: 1rem 0;
}

.conteudo-actions {
    display: flex;
    gap: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

/* Estado vazio */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
}

.empty-state i {
    font-size: 4rem;
    color: var(--gray);
    margin-bottom: 1rem;
}

/* Alertas */
.alert {
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1.5rem;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Filtros */
.filtros {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

.filtro-grid {
    display: grid;
    grid-template-columns: 1fr 2fr auto;
    gap: 1rem;
    align-items: end;
}

/* Lista de disciplinas */
.disciplinas-lista {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    margin-top: 2rem;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

.disciplina-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid #eee;
}

.disciplina-item:last-child {
    border-bottom: none;
}

/* Responsivo */
@media (max-width: 768px) {
    .disciplinas-grid, .conteudos-grid {
        grid-template-columns: 1fr;
    }
    
    .filtro-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    header h1 {
        font-size: 1.8rem;
    }
}