/* Modern Academy LMS Design */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --success: #10b981;
    --warning: #f59e0b;
    --dark: #0f172a;
    --gray-900: #1e293b;
    --gray-800: #334155;
    --gray-700: #475569;
    --gray-600: #64748b;
    --gray-500: #94a3b8;
    --gray-400: #cbd5e1;
    --gray-300: #e2e8f0;
    --gray-200: #f1f5f9;
    --gray-100: #f8fafc;
    --white: #ffffff;
}

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

.modern-body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-900);
    background: var(--white);
    line-height: 1.6;
}

.container-modern {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Modern Navigation */
.modern-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    transition: all 0.3s;
}

.modern-nav.scrolled {
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.modern-nav .container-modern {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-brand-modern {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-modern {
    font-size: 2rem;
}

.brand-text-modern span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links-modern {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link-modern {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray-700);
    transition: color 0.3s;
    position: relative;
}

.nav-link-modern:hover,
.nav-link-modern.active {
    color: var(--primary);
}

.nav-link-modern.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}

.nav-toggle-modern {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle-modern span {
    width: 25px;
    height: 2px;
    background: var(--gray-700);
    transition: all 0.3s;
}

/* Hero Modern */
.hero-modern {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg-modern {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    top: -100px;
    right: -100px;
    animation: float 20s ease-in-out infinite;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    bottom: -50px;
    left: -50px;
    animation: float 15s ease-in-out infinite reverse;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    top: 50%;
    left: 30%;
    animation: float 25s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(50px, -50px); }
}

.hero-content-modern {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge-modern {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.hero-title-modern {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.gradient-text-modern {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle-modern {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.hero-stats-modern {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 700px;
    margin: 0 auto;
}

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

.stat-number-modern {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label-modern {
    font-size: 0.9rem;
    color: var(--gray-600);
    font-weight: 500;
}

/* Buttons Modern */
.btn-modern {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0.75rem;
    transition: all 0.3s;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

.btn-primary-modern {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary-modern:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.btn-outline-modern {
    background: white;
    color: var(--gray-700);
    border: 2px solid var(--gray-300);
}

.btn-outline-modern:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-large-modern {
    padding: 1.125rem 2.5rem;
    font-size: 1.1rem;
}

.btn-block-modern {
    width: 100%;
    justify-content: center;
}

.btn-white-modern {
    background: white;
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* Section Modern */
.section-modern {
    padding: 5rem 0;
}

.section-gray-modern {
    background: var(--gray-100);
}

.section-header-modern {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title-modern {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--dark);
}

.section-desc-modern {
    font-size: 1.15rem;
    color: var(--gray-600);
}

.section-cta-modern {
    text-align: center;
    margin-top: 3rem;
}

/* Categories Modern */
.categories-modern-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.category-modern-card {
    position: relative;
    padding: 2.5rem 2rem;
    background: white;
    border-radius: 1.5rem;
    border: 2px solid var(--gray-200);
    transition: all 0.3s;
    overflow: hidden;
    text-align: center;
}

.category-modern-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--cat-color);
    opacity: 0;
    transition: opacity 0.3s;
}

.category-modern-card:hover {
    border-color: var(--cat-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.category-modern-card:hover::before {
    opacity: 0.05;
}

.category-icon-modern {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.category-name-modern {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.category-arrow-modern {
    font-size: 1.5rem;
    color: var(--gray-400);
    transition: all 0.3s;
}

.category-modern-card:hover .category-arrow-modern {
    color: var(--cat-color);
    transform: translateX(5px);
}

/* Courses Modern Grid */
.courses-modern-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.course-modern-card {
    background: white;
    border-radius: 1.5rem;
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all 0.3s;
}

.course-modern-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    border-color: var(--primary);
}

.course-image-modern {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.course-image-modern img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.course-modern-card:hover .course-image-modern img {
    transform: scale(1.05);
}

.course-placeholder-modern {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.course-badges-modern {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 0.5rem;
    flex-direction: column;
    align-items: flex-end;
}

.badge-modern {
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.badge-success-modern {
    background: rgba(16, 185, 129, 0.9);
    color: white;
}

.badge-info-modern {
    background: rgba(245, 158, 11, 0.9);
    color: white;
}

.badge-level-modern {
    background: rgba(255, 255, 255, 0.9);
    color: var(--gray-700);
}

.course-content-modern {
    padding: 1.5rem;
}

.course-category-modern {
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.course-title-modern a {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.4;
    display: block;
    margin-bottom: 0.75rem;
}

.course-desc-modern {
    color: var(--gray-600);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.course-footer-modern {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    border-top: 1px solid var(--gray-200);
    margin-bottom: 1rem;
}

.course-instructor-modern {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--gray-700);
}

.instructor-avatar-modern {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.course-price-modern {
    font-weight: 700;
}

.price-amount-modern {
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-free-modern {
    font-size: 1.25rem;
    color: var(--success);
}

/* CTA Modern */
.cta-modern-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.cta-modern-card {
    text-align: center;
    color: white;
    max-width: 800px;
    margin: 0 auto;
}

.cta-title-modern {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.cta-text-modern {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

/* Footer Modern */
.footer-modern {
    background: var(--dark);
    color: var(--gray-400);
    padding: 4rem 0 2rem;
}

.footer-grid-modern {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand-modern {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.footer-desc-modern {
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-title-modern {
    color: white;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-links-modern,
.footer-contact-modern {
    list-style: none;
}

.footer-links-modern li {
    margin-bottom: 0.75rem;
}

.footer-links-modern a {
    color: var(--gray-400);
    transition: color 0.3s;
}

.footer-links-modern a:hover {
    color: white;
}

.footer-contact-modern li {
    margin-bottom: 0.75rem;
}

.footer-bottom-modern {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-title-modern {
        font-size: 3.5rem;
    }
    
    .section-title-modern {
        font-size: 2.5rem;
    }
    
    .courses-modern-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-links-modern {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: white;
        flex-direction: column;
        padding: 2rem;
        transition: left 0.3s;
        box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    }
    
    .nav-links-modern.active {
        left: 0;
    }
    
    .nav-toggle-modern {
        display: flex;
    }
    
    .hero-title-modern {
        font-size: 2.5rem;
    }
    
    .hero-stats-modern {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-actions-modern {
        flex-direction: column;
    }
    
    .section-title-modern {
        font-size: 2rem;
    }
    
    .courses-modern-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid-modern {
        grid-template-columns: 1fr;
    }
}

/* Page Hero */
.page-hero-modern {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    border-bottom: 1px solid var(--gray-300);
}

.page-hero-content {
    text-align: center;
}

.page-title-modern {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--dark);
}

.page-subtitle-modern {
    font-size: 1.25rem;
    color: var(--gray-600);
}

/* Filters Section */
.filters-section {
    padding: 2rem 0;
    background: white;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 80px;
    z-index: 100;
}

.filter-tabs {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.filter-tabs::-webkit-scrollbar {
    height: 4px;
}

.filter-tabs::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 10px;
}

.filter-tab {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--gray-100);
    border: 2px solid transparent;
    border-radius: 50px;
    font-weight: 600;
    color: var(--gray-700);
    transition: all 0.3s;
    white-space: nowrap;
    cursor: pointer;
}

.filter-tab:hover {
    background: var(--gray-200);
}

.filter-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-color: transparent;
}

.tab-icon {
    font-size: 1.25rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 5rem 2rem;
}

.empty-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--gray-800);
}

.empty-state p {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

/* Instructors Grid */
.instructors-modern-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.instructor-modern-card {
    background: white;
    border-radius: 1.5rem;
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.instructor-modern-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    border-color: var(--primary);
}

.instructor-image-wrapper {
    position: relative;
    height: 320px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.instructor-image-modern {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.instructor-modern-card:hover .instructor-image-modern {
    transform: scale(1.05);
}

.instructor-placeholder-modern {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
    color: rgba(255,255,255,0.4);
}

.instructor-info-wrapper {
    padding: 1.75rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.instructor-name-modern {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.instructor-title-modern {
    color: var(--primary);
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.instructor-bio-modern {
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.instructor-contact-modern {
    display: flex;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--gray-100);
    border-radius: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
    transition: all 0.3s;
}

.contact-link:hover {
    background: var(--primary);
    color: white;
}

/* About & Contact Pages */
.content-section-modern {
    padding: 4rem 0;
}

.content-grid-modern {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.content-text-modern h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.content-text-modern p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.content-image-modern {
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

.content-image-modern img {
    width: 100%;
    height: auto;
}

.stats-grid-modern {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding: 3rem;
    background: white;
    border-radius: 1.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.stat-box-modern {
    text-align: center;
    padding: 1.5rem;
}

.stat-box-modern .number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-box-modern .label {
    font-size: 1rem;
    color: var(--gray-600);
    font-weight: 600;
}

/* Contact Form */
.contact-form-modern {
    background: white;
    padding: 3rem;
    border-radius: 1.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

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

.form-group-modern label {
    display: block;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-group-modern input,
.form-group-modern textarea,
.form-group-modern select {
    width: 100%;
    padding: 0.875rem 1.25rem;
    border: 2px solid var(--gray-300);
    border-radius: 0.75rem;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s;
}

.form-group-modern input:focus,
.form-group-modern textarea:focus,
.form-group-modern select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-group-modern textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-info-modern {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 3rem;
    border-radius: 1.5rem;
    color: white;
}

.contact-info-modern h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
}

.contact-item-modern {
    display: flex;
    align-items: start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-icon-modern {
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.2);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-text-modern h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    opacity: 0.9;
}

.contact-text-modern p {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Responsive Enhancements */
@media (max-width: 1024px) {
    .content-grid-modern {
        grid-template-columns: 1fr;
    }
    
    .stats-grid-modern {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .page-title-modern {
        font-size: 2.5rem;
    }
    
    .instructors-modern-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-tabs {
        justify-content: flex-start;
    }
    
    .stats-grid-modern {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .contact-info-modern {
        margin-top: 2rem;
    }
}