/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    padding: 40px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h2 {
    color: #333;
    margin-bottom: 10px;
}

.login-header p {
    color: #666;
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-primary {
    background-color: #667eea;
    color: white;
}

.btn-primary:hover {
    background-color: #5a6fd8;
}

.btn-block {
    width: 100%;
}

.alert {
    padding: 12px;
    border-radius: 5px;
    margin-bottom: 20px;
}

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

.login-footer {
    text-align: center;
    margin-top: 20px;
    color: #999;
    font-size: 12px;
}

/* Dashboard Layout */
.dashboard {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background: #2c3e50;
    color: white;
}

.sidebar-header {
    padding: 30px 20px;
    text-align: center;
    border-bottom: 1px solid #34495e;
}

.sidebar-header h3 {
    font-size: 20px;
    margin-bottom: 5px;
}

.sidebar-header p {
    font-size: 14px;
    color: #bdc3c7;
}

.sidebar-menu {
    list-style: none;
    padding: 20px 0;
}

.sidebar-menu li {
    margin-bottom: 5px;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    color: #bdc3c7;
    text-decoration: none;
    transition: all 0.3s;
}

.sidebar-menu a:hover {
    background: #34495e;
    color: white;
}

.sidebar-menu a.active {
    background: #1a252f;
    color: white;
    border-left: 4px solid #667eea;
}

.sidebar-menu i {
    width: 25px;
    margin-right: 10px;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.navbar {
    background: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar h2 {
    color: #2c3e50;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-info i {
    font-size: 30px;
    color: #667eea;
}

.content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

/* Stats Cards */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    display: flex;
    align-items: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    color: white;
    font-size: 25px;
}

.stat-info h3 {
    font-size: 28px;
    color: #2c3e50;
    margin-bottom: 5px;
}

.stat-info p {
    color: #7f8c8d;
    font-size: 14px;
}

/* Cards */
.card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid #eee;
}

.card-header h3 {
    color: #2c3e50;
}

.card-body {
    padding: 20px;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table thead {
    background: #f8f9fa;
}

.table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: #2c3e50;
    border-bottom: 2px solid #dee2e6;
}

.table td {
    padding: 15px;
    border-bottom: 1px solid #dee2e6;
}

.table tbody tr:hover {
    background: #f8f9fa;
}

/* Alert Colors */
.asistencia-si {
    color: #28a745;
    font-weight: bold;
}

.asistencia-no {
    color: #dc3545;
    font-weight: bold;
}

/* Form Styles */
.form-container {
    max-width: 800px;
    margin: 0 auto;
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.form-row .form-group {
    flex: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
    }
    
    .sidebar-menu {
        display: flex;
        overflow-x: auto;
        padding: 10px 0;
    }
    
    .sidebar-menu li {
        flex-shrink: 0;
    }
    
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        flex-direction: column;
        gap: 10px;
    }
}