/* Estilos para el panel de administración */

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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --light-gray: #ecf0f1;
    --dark-gray: #7f8c8d;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-gray);
    color: var(--primary-color);
    line-height: 1.6;
}

/* Login Styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 20px;
}

.login-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

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

.login-logo {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    border-radius: 50%;
}

.login-header h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.8rem;
}

.login-header p {
    color: var(--dark-gray);
    font-size: 0.9rem;
}

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

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--primary-color);
}

.form-group label i {
    margin-right: 8px;
    color: var(--secondary-color);
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: var(--secondary-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.login-btn:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

.login-btn i {
    margin-right: 8px;
}

.error-message {
    color: var(--accent-color);
    background: #fdf2f2;
    padding: 10px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    display: none;
}

.login-footer {
    margin-top: 20px;
}

.back-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.back-link:hover {
    text-decoration: underline;
}

.back-link i {
    margin-right: 5px;
}

/* Admin Layout */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: var(--primary-color);
    color: var(--white);
    padding: 20px 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: var(--transition);
}

.sidebar-header {
    text-align: center;
    padding: 0 20px 30px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 20px;
}

.sidebar-logo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-bottom: 10px;
}

.sidebar-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
}

.sidebar-nav ul {
    list-style: none;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    cursor: pointer;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(255,255,255,0.1);
}

.nav-item.active {
    background: var(--secondary-color);
    border-left-color: var(--white);
}

.nav-item i {
    margin-right: 12px;
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
}

.logout-btn {
    width: 100%;
    padding: 12px;
    background: var(--accent-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.logout-btn:hover {
    background: #c0392b;
}

/* Main Content */
.main-content {
    margin-left: 250px;
    flex: 1;
    padding: 0;
    background: var(--light-gray);
}

.main-header {
    background: var(--white);
    padding: 20px 30px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.main-header h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.welcome-text {
    color: var(--dark-gray);
}

.notification-btn {
    position: relative;
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--dark-gray);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
}

.notification-btn:hover {
    background: var(--light-gray);
}

.notification-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent-color);
    color: var(--white);
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Content Sections */
.content-section {
    display: none;
    padding: 30px;
}

.content-section.active {
    display: block;
}

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

.stat-card {
    background: var(--white);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    font-size: 1.5rem;
    color: var(--white);
}

.stat-card:nth-child(1) .stat-icon { background: var(--secondary-color); }
.stat-card:nth-child(2) .stat-icon { background: var(--success-color); }
.stat-card:nth-child(3) .stat-icon { background: var(--warning-color); }
.stat-card:nth-child(4) .stat-icon { background: var(--accent-color); }

.stat-content h3 {
    color: var(--dark-gray);
    font-size: 0.9rem;
    margin-bottom: 5px;
}

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

/* Dashboard Content */
.dashboard-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.recent-activity, .quick-actions {
    background: var(--white);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.recent-activity h3, .quick-actions h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
}

.activity-list {
    max-height: 300px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

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

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    background: var(--light-gray);
    color: var(--secondary-color);
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-weight: 600;
    margin-bottom: 5px;
}

.activity-time {
    font-size: 0.8rem;
    color: var(--dark-gray);
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.action-btn {
    display: flex;
    align-items: center;
    padding: 15px;
    background: var(--light-gray);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

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

.action-btn i {
    margin-right: 10px;
    font-size: 1.1rem;
}

/* Section Headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.section-header h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
}

/* Buttons */
.btn-primary {
    background: var(--secondary-color);
    color: var(--white);
    border: none;
    padding: 12px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--dark-gray);
    color: var(--white);
    border: none;
    padding: 12px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: #6c7b7d;
}

/* Students Grid */
.students-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.student-card {
    background: var(--white);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.student-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.student-photo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 15px;
    object-fit: cover;
}

.student-name {
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.student-program {
    font-size: 0.9rem;
    color: var(--dark-gray);
    margin-bottom: 15px;
}

.student-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.student-actions button {
    padding: 8px 12px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition);
}

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

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

/* Tabs */
.content-tabs {
    display: flex;
    margin-bottom: 20px;
    border-bottom: 2px solid #eee;
}

.tab-btn {
    background: none;
    border: none;
    padding: 15px 25px;
    cursor: pointer;
    font-weight: 600;
    color: var(--dark-gray);
    border-bottom: 3px solid transparent;
    transition: var(--transition);
}

.tab-btn.active {
    color: var(--secondary-color);
    border-bottom-color: var(--secondary-color);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Content Lists */
.content-list {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.content-item {
    display: flex;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #eee;
    transition: var(--transition);
}

.content-item:hover {
    background: var(--light-gray);
}

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

.content-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    background: var(--light-gray);
    color: var(--secondary-color);
}

.content-info {
    flex: 1;
}

.content-title {
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.content-description {
    color: var(--dark-gray);
    font-size: 0.9rem;
}

.content-actions {
    display: flex;
    gap: 10px;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--white);
    margin: 5% auto;
    padding: 0;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    animation: slideIn 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    border-bottom: 1px solid #eee;
}

.modal-header h3 {
    color: var(--primary-color);
    margin: 0;
}

.close {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-gray);
    transition: var(--transition);
}

.close:hover {
    color: var(--accent-color);
}

.modal form {
    padding: 25px;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* Config Sections */
.config-sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.config-card {
    background: var(--white);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.config-card h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .dashboard-content {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .config-sections {
        grid-template-columns: 1fr;
    }
    
    .main-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}