/* Reset ve Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Ubuntu', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* Header Styles */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 20px;
}

.nav-brand .logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #10B981;
    text-decoration: none;
}

.nav-brand .logo:hover {
    color: #10B981;
    text-decoration: none;
}

.nav-brand .logo i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #666;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover,
.nav-link.active {
    color: #10B981;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: #666;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.3s;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #666;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.3s;
}

.mobile-menu-toggle:hover {
    background-color: #f3f4f6;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-name {
    font-weight: 500;
    color: #333;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
    cursor: pointer;
    font-family: 'Ubuntu', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.btn-primary {
    background: #10B981;
    color: white;
}

.btn-primary:hover {
    background: #059669;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #10B981;
    border-color: #10B981;
}

.btn-outline:hover {
    background: #10B981;
    color: white;
}

.btn-white {
    background: white;
    color: #10B981;
}

.btn-white:hover {
    background: #f3f4f6;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

.btn-icon {
    background: none;
    border: none;
    padding: 0.5rem;
    border-radius: 50%;
    color: #666;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-icon:hover {
    background: #f3f4f6;
    color: #10B981;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #10B981 0%, #3B82F6 50%, #1E40AF 100%);
    color: white;
    padding: 8rem 0 4rem;
    text-align: center;
    margin-top: 80px;
}

.hero-content {
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    white-space: nowrap;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
    max-width: 100%;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 1 !important;
    color: white !important;
    font-weight: 500 !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Hero bölümündeki istatistikler için özel kurallar */
.hero .stat-label {
    font-size: 1rem !important;
    color: white !important;
    opacity: 0.9 !important;
    font-weight: 600 !important;
}

.hero-stats .stat-label {
    font-size: 1rem !important;
    color: white !important;
    opacity: 0.9 !important;
    font-weight: 600 !important;
}

.stat-item .stat-label {
    font-size: 1rem !important;
    color: white !important;
    opacity: 0.9 !important;
    font-weight: 600 !important;
}

/* Section Styles */
.features,
.categories,
.featured-courses {
    padding: 4rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
    display: block !important;
    flex-direction: column !important;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: #1f2937;
    display: block !important;
    width: 100% !important;
    float: none !important;
    clear: both !important;
}

.section-header p {
    font-size: 1.1rem;
    color: #6b7280;
    margin: 0 auto 1rem auto;
    white-space: nowrap !important;
    line-height: 1.6;
    display: block !important;
    width: 100% !important;
    float: none !important;
    clear: both !important;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: #ecfdf5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: #10B981;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.feature-card p {
    color: #6b7280;
    line-height: 1.6;
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.category-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.category-color {
    height: 4px;
    width: 100%;
}

.category-content {
    padding: 1.5rem;
    text-align: center;
    position: relative;
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.category-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.category-content p {
    color: #6b7280;
    margin-bottom: 1rem;
}

.category-arrow {
    position: absolute;
    top: 50%;
    right: 1.5rem;
    transform: translateY(-50%);
    color: #10B981;
    opacity: 0;
    transition: all 0.3s;
}

.category-card:hover .category-arrow {
    opacity: 1;
    transform: translateY(-50%) translateX(5px);
}

/* Courses Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.course-card {
    background: white;
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid #f1f5f9;
}

.course-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.course-image {
    position: relative;
    height: 160px;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.course-tags {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    right: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.tag {
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: white;
    backdrop-filter: blur(4px);
}

.tag-category {
    background: rgba(16, 185, 129, 0.9);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.tag-level {
    background: rgba(255, 255, 255, 0.95);
    color: #374151;
    border: 1px solid rgba(255, 255, 255, 0.3);
    font-weight: 600;
}

.course-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.course-overlay i {
    font-size: 3rem;
    color: white;
    opacity: 0;
    transition: all 0.3s;
}

.course-card:hover .course-overlay {
    background: rgba(0,0,0,0.3);
}

.course-card:hover .course-overlay i {
    opacity: 1;
}

.course-content {
    padding: 1.25rem;
}

.course-content h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1f2937;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-description {
    color: #6b7280;
    margin-bottom: 0.75rem;
    line-height: 1.4;
    font-size: 0.875rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-stats {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
    color: #6b7280;
}

.course-stats span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.course-stats i {
    color: #fbbf24;
    font-size: 0.75rem;
}

.course-tags-bottom {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-bottom: 0.75rem;
}

.tag-small {
    background: #f1f5f9;
    color: #64748b;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.7rem;
    font-weight: 500;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.course-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: #10B981;
}

.course-actions {
    display: flex;
    gap: 0.375rem;
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, #10B981 0%, #3B82F6 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: #10B981;
}

.footer-logo i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.footer-section p {
    color: #d1d5db;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #10B981;
}

.social-links {
    display: flex !important;
    flex-direction: row !important;
    gap: 1rem;
    align-items: center;
    justify-content: flex-start;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #374151;
    border-radius: 50%;
    display: flex !important;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: background-color 0.3s;
    flex-shrink: 0;
}

.social-links a:hover {
    background: #10B981;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.contact-info i {
    color: #10B981;
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    color: #9ca3af;
}

.footer-links {
    display: flex;
    gap: 1rem;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #10B981;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #10B981 0%, #3B82F6 100%);
    color: white;
    padding: 6rem 0 3rem;
    text-align: center;
    margin-top: 80px;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Filters Section */
.filters-section {
    background: white;
    padding: 2rem 0;
    border-bottom: 1px solid #e5e7eb;
}

.filters-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.filters-form .btn {
    white-space: nowrap;
    min-width: auto;
}

.search-bar {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    background: #f9fafb;
    border-radius: 0.5rem;
    overflow: hidden;
}

.search-bar input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    background: transparent;
    font-size: 1rem;
    font-family: 'Ubuntu', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.search-bar button {
    padding: 0.75rem 1rem;
    background: #10B981;
    color: white;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

.search-bar button:hover {
    background: #059669;
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    align-items: end;
    margin-top: 1rem;
}

.filters-grid .btn {
    grid-column: span 1;
    justify-self: stretch;
    min-width: 120px;
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
}

.filters-grid .btn:last-child {
    grid-column: span 1;
}

.filters-grid select,
.filters-grid input {
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    font-family: 'Ubuntu', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: white;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.filters-grid select:focus,
.filters-grid input:focus {
    outline: none;
    border-color: #10B981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.price-range {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.price-range input {
    flex: 1;
    min-width: 80px;
}

.price-range span {
    color: #6b7280;
    font-weight: 500;
    white-space: nowrap;
}

/* Courses Section */
.courses-section {
    padding: 3rem 0;
}

.no-results {
    text-align: center;
    padding: 4rem 0;
    color: #6b7280;
}

.no-results i {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: #d1d5db;
}

.no-results h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #374151;
}

.course-instructor {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #6b7280;
}

.course-instructor i {
    color: #10B981;
}

/* Auth Section */
.auth-section {
    padding: 6rem 0;
    background: #f8f9fa;
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
}

.auth-container {
    max-width: 500px;
    margin: 0 auto;
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h1 {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.auth-header p {
    color: #6b7280;
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

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

.form-group.has-icon {
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #374151;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: 'Ubuntu', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: border-color 0.3s, box-shadow 0.3s;
    height: 48px;
    box-sizing: border-box;
}

.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="tel"],
.form-group input[type="text"] {
    padding-left: 2.5rem;
}

.form-group select {
    padding-left: 2.5rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #10B981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(65%);
    color: #6b7280;
    font-size: 0.875rem;
    pointer-events: none;
    z-index: 10;
    line-height: 1;
}

.password-toggle {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(30%);
    background: none;
    border: none;
    color: #6b7280;
    cursor: pointer;
    padding: 0.25rem;
    z-index: 10;
    font-size: 0.875rem;
    line-height: 1;
}

.password-toggle:hover {
    color: #10B981;
}

.form-group textarea {
    padding: 0.75rem 1rem;
    resize: vertical;
    min-height: 80px;
    height: auto;
}

.form-row .form-icon {
    top: 50%;
    transform: translateY(65%);
    line-height: 1;
}

.form-row .password-toggle {
    top: 50%;
    transform: translateY(30%);
    line-height: 1;
}

.form-group textarea + .form-icon {
    top: 1.5rem;
    transform: none;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: #6b7280;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid #d1d5db;
    border-radius: 0.25rem;
    position: relative;
    transition: all 0.3s;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: #10B981;
    border-color: #10B981;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.forgot-link {
    color: #10B981;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.forgot-link:hover {
    color: #059669;
}

.auth-divider {
    text-align: center;
    margin: 1.5rem 0;
    position: relative;
}

.auth-divider span {
    background: white;
    padding: 0 1rem;
    color: #6b7280;
    font-size: 0.9rem;
}

.social-login {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.btn-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    background: white;
    color: #374151;
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.3s;
}

.btn-social:hover {
    background: #f9fafb;
    border-color: #9ca3af;
}

.btn-google:hover {
    background: #f8f9fa;
    border-color: #ea4335;
    color: #ea4335;
}

.btn-facebook:hover {
    background: #f8f9fa;
    border-color: #1877f2;
    color: #1877f2;
}

.auth-footer {
    text-align: center;
}

.auth-footer p {
    color: #6b7280;
    font-size: 0.9rem;
}

.auth-footer a {
    color: #10B981;
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover {
    color: #059669;
}

/* Alert Styles */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alert-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
}

.alert-success {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #16a34a;
}

.alert i {
    font-size: 1.1rem;
}

/* Admin Dashboard Styles */
.admin-dashboard {
    padding: 2rem 0;
    background: #f8f9fa;
    min-height: calc(100vh - 80px);
}

.dashboard-header {
    text-align: center;
    margin-bottom: 3rem;
}

.dashboard-header h1 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.dashboard-header p {
    color: #6b7280;
    font-size: 1.1rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.stat-card .stat-icon {
    width: 60px;
    height: 60px;
    background: #ecfdf5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #10B981;
}

.stat-content h3 {
    font-size: 2rem;
    font-weight: bold;
    color: #1f2937;
    margin-bottom: 0.25rem;
}

.stat-content p {
    color: #6b7280;
    font-size: 0.9rem;
}

.dashboard-content {
    margin-top: 2rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.dashboard-card {
    background: white;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    overflow: hidden;
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.card-content {
    padding: 1.5rem;
}

.no-data {
    text-align: center;
    color: #6b7280;
    font-style: italic;
    padding: 2rem 0;
}

.course-list,
.user-list,
.payment-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.course-item,
.user-item,
.payment-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: #f9fafb;
    border-radius: 0.5rem;
    transition: background-color 0.3s;
}

.course-item:hover,
.user-item:hover,
.payment-item:hover {
    background: #f3f4f6;
}

.course-info h4,
.user-info h4,
.payment-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.25rem;
}

.course-info p,
.user-info p,
.payment-info p {
    font-size: 0.875rem;
    color: #6b7280;
}

.status-badge,
.role-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.status-badge {
    background: #f3f4f6;
    color: #6b7280;
}

.status-published {
    background: #dcfce7;
    color: #16a34a;
}

.status-draft {
    background: #fef3c7;
    color: #d97706;
}

.status-archived {
    background: #fee2e2;
    color: #dc2626;
}

.status-completed {
    background: #dcfce7;
    color: #16a34a;
}

.status-pending {
    background: #fef3c7;
    color: #d97706;
}

.status-failed {
    background: #fee2e2;
    color: #dc2626;
}

.role-badge {
    background: #e0e7ff;
    color: #3730a3;
}

.role-student {
    background: #dbeafe;
    color: #1e40af;
}

.role-instructor {
    background: #dcfce7;
    color: #16a34a;
}

.role-admin {
    background: #fef3c7;
    color: #d97706;
}

.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 1rem;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    text-decoration: none;
    color: #374151;
    transition: all 0.3s;
}

.action-btn:hover {
    background: #f3f4f6;
    border-color: #10B981;
    color: #10B981;
}

.action-btn i {
    font-size: 1.5rem;
}

.action-btn span {
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .courses-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.25rem;
    }
    
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .header .container {
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .nav-menu {
        display: none;
        width: 100%;
        flex-direction: column;
        background: white;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        border-radius: 0.5rem;
        padding: 1rem;
        margin-top: 1rem;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu .nav-link {
        padding: 0.75rem 1rem;
        border-bottom: 1px solid #f3f4f6;
    }
    
    .nav-menu .nav-link:last-child {
        border-bottom: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
        white-space: normal;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .features-grid,
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .filters-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .price-range {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }
    
    .price-range span {
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 6rem 0 3rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .filters-grid {
        grid-template-columns: 1fr;
    }
    
    .search-bar {
        max-width: 100%;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
}

/* Course Detail Page Styles */
.breadcrumb {
    background: #f8fafc;
    padding: 1rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #64748b;
}

.breadcrumb-nav a {
    color: #10B981;
    text-decoration: none;
}

.breadcrumb-nav a:hover {
    text-decoration: underline;
}

.breadcrumb-nav span {
    color: #94a3b8;
}

.course-detail {
    padding: 2rem 0;
}

.course-header {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    margin-bottom: 3rem;
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.course-image {
    position: relative;
}

.course-image-placeholder {
    width: 100%;
    height: 300px;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    background: linear-gradient(135deg, #10B981, #059669);
}

.course-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
}

.badge {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: white;
}

.badge-category {
    background: #10B981;
}

.course-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.course-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin: 0;
}

.course-description {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.6;
    margin: 0;
}

.course-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin: 1rem 0;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #64748b;
    font-size: 0.9rem;
}

.meta-item i {
    color: #10B981;
}

.course-price {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1rem 0;
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: #10B981;
}

.original-price {
    font-size: 1.25rem;
    color: #94a3b8;
    text-decoration: line-through;
}

.course-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.course-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.content-main {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.course-tabs {
    display: flex;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 2rem;
}

.tab-btn {
    padding: 1rem 1.5rem;
    border: none;
    background: none;
    color: #64748b;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}

.tab-btn.active {
    color: #10B981;
    border-bottom-color: #10B981;
}

.tab-btn:hover {
    color: #10B981;
}

.tab-panel {
    display: none;
}

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

.course-overview h3,
.course-curriculum h3,
.instructor-profile h3,
.course-reviews h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.learning-objectives,
.course-requirements {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
}

.learning-objectives li,
.course-requirements li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: #64748b;
}

.learning-objectives li i,
.course-requirements li i {
    color: #10B981;
    font-size: 0.875rem;
}

.curriculum-sections {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.curriculum-section {
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    padding: 1rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.section-header h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
}

.section-duration {
    font-size: 0.875rem;
    color: #64748b;
    background: #f1f5f9;
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
}

.instructor-profile {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.instructor-avatar img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
}

.instructor-info {
    flex: 1;
}

.instructor-title {
    color: #10B981;
    font-weight: 500;
    margin: 0.5rem 0;
}

.instructor-bio {
    color: #64748b;
    line-height: 1.6;
    margin: 1rem 0;
}

.instructor-stats {
    display: flex;
    gap: 2rem;
    margin-top: 1rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #10B981;
}

.stat-label {
    font-size: 0.875rem;
    color: #64748b;
}

.rating-overview {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.rating-score {
    text-align: center;
}

.score {
    font-size: 3rem;
    font-weight: 700;
    color: #10B981;
    display: block;
}

.stars {
    display: flex;
    gap: 0.25rem;
    justify-content: center;
    margin: 0.5rem 0;
}

.stars i {
    color: #e2e8f0;
    font-size: 1.25rem;
}

.stars i.active {
    color: #fbbf24;
}

.rating-count {
    color: #64748b;
    font-size: 0.875rem;
}

.reviews-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.review-item {
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    padding: 1.5rem;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.reviewer-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.reviewer-avatar img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.reviewer-details h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
}

.review-rating {
    display: flex;
    gap: 0.25rem;
    margin-top: 0.25rem;
}

.review-rating i {
    color: #e2e8f0;
    font-size: 0.875rem;
}

.review-rating i.active {
    color: #fbbf24;
}

.review-date {
    color: #64748b;
    font-size: 0.875rem;
}

.review-content p {
    color: #64748b;
    line-height: 1.6;
    margin: 0;
}

.course-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sidebar-card {
    background: white;
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.sidebar-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.course-info-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #64748b;
    font-size: 0.9rem;
}

.info-item i {
    color: #10B981;
    width: 16px;
}

.similar-courses {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.similar-course {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    transition: all 0.3s;
}

.similar-course:hover {
    border-color: #10B981;
    box-shadow: 0 2px 4px rgba(16, 185, 129, 0.1);
}

.similar-course-image {
    flex-shrink: 0;
}

.similar-course-image .course-image-placeholder {
    width: 80px;
    height: 60px;
    font-size: 1.5rem;
}

.similar-course-info {
    flex: 1;
}

.similar-course-info h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 0.5rem 0;
}

.similar-course-info h4 a {
    color: inherit;
    text-decoration: none;
}

.similar-course-info h4 a:hover {
    color: #10B981;
}

.similar-course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
}

.similar-course-meta .rating {
    color: #64748b;
}

.similar-course-meta .rating i {
    color: #fbbf24;
}

.similar-course-meta .price {
    color: #10B981;
    font-weight: 600;
}

/* Course Detail Responsive */
@media (max-width: 1024px) {
    .course-header {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .course-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .course-meta {
        gap: 1rem;
    }
    
    .course-actions {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .course-header {
        padding: 1.5rem;
    }
    
    .content-main {
        padding: 1.5rem;
    }
    
    .course-tabs {
        flex-wrap: wrap;
    }
    
    .tab-btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    
    .instructor-profile {
        flex-direction: column;
        text-align: center;
    }
    
    .instructor-stats {
        justify-content: center;
    }
    
    .rating-overview {
        flex-direction: column;
        text-align: center;
    }
    
    .review-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .similar-course {
        flex-direction: column;
        text-align: center;
    }
}

/* Profile Page Styles */
.profile-page {
    padding: 2rem 0;
}

.profile-header {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 2rem;
}

.profile-avatar img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #10B981;
}

.profile-info h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin: 0 0 0.5rem 0;
}

.profile-email {
    color: #64748b;
    font-size: 1rem;
    margin: 0 0 0.5rem 0;
}

.profile-role {
    color: #10B981;
    font-weight: 500;
    font-size: 0.9rem;
    margin: 0 0 1rem 0;
}

.profile-bio {
    color: #64748b;
    line-height: 1.6;
    margin: 0;
}

.profile-content {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.profile-tabs {
    display: flex;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 2rem;
}

.profile-tabs .tab-btn {
    padding: 1rem 1.5rem;
    border: none;
    background: none;
    color: #64748b;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}

.profile-tabs .tab-btn.active {
    color: #10B981;
    border-bottom-color: #10B981;
}

.profile-tabs .tab-btn:hover {
    color: #10B981;
}

.profile-form h3,
.user-courses h3,
.user-certificates h3,
.password-form h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1.5rem;
}

.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: #64748b;
}

.empty-state i {
    font-size: 4rem;
    color: #cbd5e1;
    margin-bottom: 1rem;
}

.empty-state h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #374151;
    margin: 0 0 0.5rem 0;
}

.empty-state p {
    margin: 0 0 1.5rem 0;
    line-height: 1.6;
}

.course-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    padding: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.progress-bar {
    flex: 1;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: #10B981;
    transition: width 0.3s;
}

.progress-text {
    color: white;
    font-size: 0.75rem;
    font-weight: 500;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.certificate-card {
    border: 1px solid #e2e8f0;
    border-radius: 0.75rem;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s;
}

.certificate-card:hover {
    border-color: #10B981;
    box-shadow: 0 4px 6px -1px rgba(16, 185, 129, 0.1);
}

.certificate-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #10B981, #059669);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.certificate-info {
    flex: 1;
}

.certificate-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 0.5rem 0;
}

.certificate-date,
.certificate-score {
    font-size: 0.875rem;
    color: #64748b;
    margin: 0.25rem 0;
}

.certificate-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.certificate-actions .btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Profile Responsive */
@media (max-width: 768px) {
    .profile-header {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .profile-content {
        padding: 1.5rem;
    }
    
    .profile-tabs {
        flex-wrap: wrap;
    }
    
    .profile-tabs .tab-btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .certificate-card {
        flex-direction: column;
        text-align: center;
    }
    
    .certificate-actions {
        flex-direction: row;
        justify-content: center;
    }
}

/* Instructors Page Styles */
.page-header {
    text-align: center;
    padding: 3rem 0;
    background: linear-gradient(135deg, #10B981, #059669);
    color: white;
    margin-bottom: 3rem;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin: 0 0 1rem 0;
}

.page-header p {
    font-size: 1.25rem;
    margin: 0;
    opacity: 0.9;
}

.instructors-section {
    padding: 2rem 0;
}

.instructors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.instructor-card {
    background: white;
    border-radius: 1rem;
    padding: 2.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s;
}

.instructor-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px -5px rgba(0, 0, 0, 0.1);
}

.instructor-avatar {
    margin-bottom: 1.5rem;
}

.instructor-avatar img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #10B981;
}

.instructor-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 0.5rem 0;
}

.instructor-title {
    color: #10B981;
    font-weight: 500;
    font-size: 1rem;
    margin: 0 0 1.5rem 0;
}

.instructor-bio {
    color: #64748b;
    line-height: 1.6;
    font-size: 1rem;
    margin: 0 0 2rem 0;
}

.instructor-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.instructor-stats .stat-item {
    text-align: center;
}

.instructor-stats .stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #10B981;
}

.instructor-stats .stat-label {
    font-size: 1rem;
    color: #64748b;
    font-weight: 500;
}

.instructor-actions {
    margin-top: 1rem;
}

/* Instructors Responsive */
@media (max-width: 768px) {
    .page-header h1 {
        font-size: 2rem;
    }
    
    .page-header p {
        font-size: 1rem;
    }
    
    .instructors-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .instructor-card {
        padding: 1.5rem;
    }
    
    .instructor-stats {
        gap: 1.5rem;
    }
}

/* About Page Styles */
.about-content {
    padding: 2rem 0;
}

.about-intro,
.about-mission,
.about-vision {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.about-intro h2,
.about-mission h2,
.about-vision h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.about-intro p,
.about-mission p,
.about-vision p {
    color: #64748b;
    line-height: 1.7;
    font-size: 1.1rem;
}

.about-values {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.about-values h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 2rem;
    text-align: center;
}

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

.value-item {
    text-align: center;
    padding: 1.5rem;
    border-radius: 0.75rem;
    background: #f8fafc;
    transition: all 0.3s;
}

.value-item:hover {
    background: #10B981;
    color: white;
    transform: translateY(-4px);
}

.value-item i {
    font-size: 2.5rem;
    color: #10B981;
    margin-bottom: 1rem;
}

.value-item:hover i {
    color: white;
}

.value-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 0.5rem 0;
}

.value-item p {
    margin: 0;
    line-height: 1.6;
}

.about-stats {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.about-stats h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 2rem;
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stats-grid .stat-item {
    text-align: center;
    padding: 1.5rem;
    border-radius: 0.75rem;
    background: linear-gradient(135deg, #10B981, #059669);
    color: white;
}

.stats-grid .stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stats-grid .stat-label {
    font-size: 1rem;
    font-weight: 500;
    opacity: 0.9;
}

/* Contact Page Styles */
.contact-content {
    padding: 2rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}

.contact-form-section,
.contact-info-section {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.contact-form-section h2,
.contact-info-section h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1.5rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #10B981, #059669);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.contact-details h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 0.5rem 0;
}

.contact-details p {
    color: #64748b;
    line-height: 1.6;
    margin: 0;
}

.social-media h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    color: #64748b;
    transition: all 0.3s;
    font-size: 0.9rem;
    font-weight: 500;
    min-width: 120px;
}

.social-link:hover {
    background: #f1f5f9;
    color: #10B981;
}

.social-link.facebook:hover {
    background: #1877f2;
    color: white;
}

.social-link.twitter:hover {
    background: #1da1f2;
    color: white;
}

.social-link.instagram:hover {
    background: #e4405f;
    color: white;
}

.social-link.youtube:hover {
    background: #ff0000;
    color: white;
}

.social-link i {
    font-size: 1.25rem;
    width: 20px;
}

/* About & Contact Responsive */
@media (max-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .values-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

@media (max-width: 768px) {
    .about-intro,
    .about-mission,
    .about-vision,
    .about-values,
    .about-stats,
    .contact-form-section,
    .contact-info-section {
        padding: 1.5rem;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .contact-info-item {
        flex-direction: column;
        text-align: center;
    }
    
    .social-links {
        flex-direction: row;
        flex-wrap: wrap;
    }
}

/* Admin Panel Styles */
.admin-panel {
    padding: 2rem 0;
}

.admin-header {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin: 0 0 0.5rem 0;
}

.admin-header p {
    color: #64748b;
    margin: 0;
}

.admin-nav {
    background: white;
    border-radius: 1rem;
    padding: 1rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    display: flex;
    gap: 1rem;
    overflow-x: auto;
}

.admin-nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    color: #64748b;
    font-weight: 500;
    transition: all 0.3s;
    white-space: nowrap;
}

.admin-nav-link:hover {
    background: #f1f5f9;
    color: #10B981;
}

.admin-nav-link.active {
    background: #10B981;
    color: white;
}

.admin-content {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.admin-table {
    margin-top: 1rem;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.table-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
}

.table-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.search-input {
    padding: 0.5rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    min-width: 200px;
}

.filter-select {
    padding: 0.5rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    background: white;
}

.table-responsive {
    overflow-x: auto;
}

.admin-table-content {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.admin-table-content th,
.admin-table-content td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.admin-table-content th {
    background: #f8fafc;
    font-weight: 600;
    color: #374151;
    font-size: 0.9rem;
}

.admin-table-content td {
    color: #64748b;
}

.course-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.course-image-small {
    flex-shrink: 0;
}

.course-image-small .course-image-placeholder {
    width: 60px;
    height: 45px;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: white;
}

.course-details h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 0.25rem 0;
}

.course-details p {
    font-size: 0.875rem;
    color: #64748b;
    margin: 0;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.status-published {
    background: #d1fae5;
    color: #065f46;
}

.status-draft {
    background: #fef3c7;
    color: #92400e;
}

.status-pending {
    background: #dbeafe;
    color: #1e40af;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    border-radius: 0.375rem;
}

.btn-warning {
    background: #f59e0b;
    color: white;
    border: none;
}

.btn-warning:hover {
    background: #d97706;
}

.btn-danger {
    background: #ef4444;
    color: white;
    border: none;
}

.btn-danger:hover {
    background: #dc2626;
}

/* Admin Responsive */
@media (max-width: 1024px) {
    .admin-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .table-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .table-actions {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 768px) {
    .admin-panel {
        padding: 1rem 0;
    }
    
    .admin-header,
    .admin-content {
        padding: 1.5rem;
    }
    
    .admin-nav {
        padding: 0.75rem;
        gap: 0.5rem;
    }
    
    .admin-nav-link {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .admin-table-content th,
    .admin-table-content td {
        padding: 0.75rem 0.5rem;
    }
    
    .course-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .btn-sm {
        padding: 0.25rem 0.5rem;
        font-size: 0.8rem;
    }
}