/* Estilos generales */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f6fa;
    color: #2c3e50;
}

/* Navbar */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
    letter-spacing: 1px;
}

.nav-link {
    color: white !important;
    margin: 0 0.5rem;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: var(--light-color) !important;
    transform: translateY(-2px);
}

/* Dashboard */
.dashboard-container {
    padding: 2rem;
}

.card {
    border: none;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    margin-bottom: 2rem;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    border-radius: 8px 8px 0 0 !important;
    font-weight: 600;
}

/* Botones */
.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #2980b9 100%);
    border: none;
    border-radius: 6px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
}

/* Login */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.login-box {
    background: white;
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-align: center;
    font-weight: bold;
}

.login-box .form-control {
    border-radius: 6px;
    border: 1px solid #ddd;
    padding: 0.75rem;
    margin-bottom: 1rem;
}

.login-box .form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

/* Tabla de datos */
.table {
    background: white;
    border-radius: 8px;
    overflow: hidden;
}

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

.table tbody tr:hover {
    background-color: var(--light-color);
}

/* Tarjetas de estadísticas */
.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--secondary-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 1rem;
}

.stat-card h3 {
    color: var(--primary-color);
    font-size: 2rem;
    font-weight: bold;
}

.stat-card p {
    color: #7f8c8d;
    margin: 0;
}

/* Estados de desempeño (semáforo) */
.status-green {
    background-color: var(--success-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.status-yellow {
    background-color: var(--warning-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.status-red {
    background-color: var(--danger-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Footer */
footer {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-container {
        padding: 1rem;
    }

    .login-box {
        margin: 1rem;
        padding: 2rem;
    }

    .card {
        margin-bottom: 1rem;
    }
}

/* Estilos para Asistencia y QR */
.attendance-success {
    padding: 20px;
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
    margin: 15px 0;
}

.attendance-success i {
    font-size: 2rem;
    margin-bottom: 10px;
}

.attendance-late {
    padding: 20px;
    background: linear-gradient(135deg, #ffc107 0%, #ff9800 100%);
    color: #333;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
    margin: 15px 0;
}

.attendance-late i {
    font-size: 2rem;
    margin-bottom: 10px;
}

.attendance-error {
    padding: 20px;
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
    color: white;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
    margin: 15px 0;
}

.attendance-error i {
    font-size: 2rem;
    margin-bottom: 10px;
}

.qr-reader-box {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.stat-card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.stat-card h3 {
    color: #667eea;
    font-size: 2.5rem;
    margin: 0;
    font-weight: bold;
}