/* Reset e configurações básicas */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

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

/* Header */
.header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.header h1 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
}

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 2rem;
    margin-bottom: 2rem;
}

.card-header {
    border-bottom: 1px solid #eee;
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #2c3e50;
}

/* Botões */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-success {
    background-color: #27ae60;
    color: white;
}

.btn-success:hover {
    background-color: #229954;
}

.btn-warning {
    background-color: #f39c12;
    color: white;
}

.btn-warning:hover {
    background-color: #e67e22;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.btn-large {
    padding: 20px 40px;
    font-size: 1.2rem;
    width: 100%;
    margin-bottom: 1rem;
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #2c3e50;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-select {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    background-color: white;
    cursor: pointer;
}

/* Grid */
.grid {
    display: grid;
    gap: 1rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Login */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
}

.login-title {
    text-align: center;
    margin-bottom: 2rem;
    color: #2c3e50;
    font-size: 1.8rem;
}

/* Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.dashboard-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.dashboard-card:hover {
    transform: translateY(-5px);
}

.dashboard-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #3498db;
}

/* QR Scanner */
.qr-scanner-container {
    text-align: center;
    padding: 2rem;
}

.qr-video {
    width: 100%;
    max-width: 500px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.qr-guide {
    margin: 2rem 0;
    padding: 1rem;
    background-color: #e8f4fd;
    border-left: 4px solid #3498db;
    border-radius: 6px;
}

/* Student Info */
.student-info {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.student-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #3498db;
}

.student-details h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.student-details p {
    margin-bottom: 0.25rem;
    color: #666;
}

/* Tabelas */
.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.table th,
.table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
}

.table tr:hover {
    background-color: #f8f9fa;
}

/* Alertas */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

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

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

.alert-info {
    background-color: #cce7ff;
    color: #004085;
    border: 1px solid #b3d7ff;
}

/* Navegação */
.nav {
    background-color: #34495e;
    padding: 1rem 0;
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.nav-link {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: background-color 0.3s ease;
}

.nav-link:hover {
    background-color: #2c3e50;
}

/* Barra inferior para mobile */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #ffffff;
    border-top: 1px solid #e6e6e6;
    display: none;
    z-index: 999;
}

.bottom-nav .bottom-nav-inner {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
}

.bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 10px 6px;
    color: #34495e;
    text-decoration: none;
    font-size: 12px;
}

.bottom-nav a .icon {
    font-size: 18px;
    margin-bottom: 4px;
}

/* Responsividade */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    body {
        padding-bottom: 64px; /* espaço para a bottom-nav */
    }

    .header {
        padding: 0.5rem 0;
    }

    .header h1 {
        font-size: 1.1rem;
    }
    
    .student-info {
        flex-direction: column;
        text-align: center;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .nav {
        display: none; /* esconde a barra superior no mobile */
    }

    .bottom-nav {
        display: block; /* mostra a barra inferior no mobile */
    }
    
    .btn-large {
        padding: 15px 30px;
        font-size: 1rem;
    }
}

/* Utilitários */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.hidden { display: none; }
.loading { opacity: 0.6; pointer-events: none; }

/* Ajustes mobile específicos para o dashboard */
@media (max-width: 768px) {
    .page-dashboard .card {
        padding: 1rem;
        margin-bottom: 1rem;
    }

    .page-dashboard .dashboard-grid {
        gap: 1rem;
        margin-top: 1rem;
    }

    .page-dashboard .dashboard-card {
        padding: 1rem;
    }

    .page-dashboard .dashboard-icon {
        font-size: 2rem;
        margin-bottom: 0.5rem;
    }

    .page-dashboard .card-title {
        font-size: 1.1rem;
    }

    .page-dashboard .btn {
        min-width: auto;
        width: 100%;
    }

    .page-dashboard .grid-3 {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.5rem;
    }

    .page-dashboard h4 {
        font-size: 1rem;
    }

    .page-dashboard .header h1 {
        font-size: 1rem;
    }
}