@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
    --font-heading: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --color-primary: #667eea;
    --color-secondary: #764ba2;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-light: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
    --color-dark: #1a1a2e;
    --color-white: #ffffff;
    --color-bg: #fafbfc;
    --color-text: #4a5568;
    --color-text-light: #718096;
    --color-success: #48bb78;
    --color-border: #e2e8f0;
}

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

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.75;
    font-weight: 400;
    background-color: var(--color-bg);
    color: var(--color-text);
    -webkit-font-smoothing: antialiased;
}

main {
    padding-top: 82px; /* Header height */
}

a {
    text-decoration: none;
    color: var(--color-primary);
    transition: color 0.3s;
}

a:hover {
    color: var(--color-secondary);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-dark);
    line-height: 1.3;
}

h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 3.75rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.01em;
}

h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 600;
}

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

.tag {
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}
.header-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 32px;
}
.nav-links {
    display: none;
    gap: 40px;
}
.nav-links a {
    color: #1a1a2e;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
}
.nav-links a:hover, .nav-links a.active {
    color: #667eea;
    border-bottom-color: #667eea;
}
.header-actions { display: flex; align-items: center; gap: 1rem; }
.header-cta {
    background: var(--gradient-primary);
    color: #ffffff;
    padding: 14px 30px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}
.header-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
    color: #fff;
}
.mobile-menu-toggle { display: block; background: none; border: none; cursor: pointer; }

@media (min-width: 1024px) {
    .nav-links { display: flex; }
    .mobile-menu-toggle { display: none; }
    .nav-links.active { /* Desktop doesn't need this */ }
}

/* Hero Section */
.hero {
    min-height: 90vh;
    background: var(--gradient-primary);
    position: relative;
    display: flex;
    align-items: center;
    padding: 140px 20px 100px;
    overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; top: -50%; right: -25%; width: 100%; height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
}
.hero::after {
    content: ''; position: absolute; bottom: -30%; left: -20%; width: 80%; height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
}
.hero-inner {
    max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr; gap: 60px; align-items: center; position: relative; z-index: 1; text-align: center;
}
.hero-content .tag {
    color: rgba(255,255,255,0.9); background: none; -webkit-text-fill-color: initial; margin-bottom: 16px; display: block;
}
.hero h1 { color: var(--color-white); margin-bottom: 24px; }
.hero-description { font-size: 1.125rem; color: rgba(255,255,255,0.85); margin-bottom: 40px; max-width: 600px; margin-left: auto; margin-right: auto;}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center;}
.btn-white { background: var(--color-white); color: var(--color-primary); padding: 18px 36px; font-size: 15px; font-weight: 600; border-radius: 50px; transition: all 0.3s; }
.btn-white:hover { transform: translateY(-3px); box-shadow: 0 15px 40px rgba(0,0,0,0.2); color: var(--color-primary); }
.btn-outline-white { background: transparent; border: 2px solid rgba(255,255,255,0.5); color: var(--color-white); padding: 16px 36px; font-size: 15px; font-weight: 600; border-radius: 50px; transition: all 0.3s; }
.btn-outline-white:hover { background: rgba(255,255,255,0.1); border-color: #ffffff; color: var(--color-white); }
.hero-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.stat-card { background: rgba(255,255,255,0.15); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); padding: 28px; border-radius: 20px; border: 1px solid rgba(255,255,255,0.2); }
.stat-card .number { font-size: 2.5rem; font-weight: 800; color: var(--color-white); line-height: 1; margin-bottom: 8px; }
.stat-card .label { font-size: 14px; color: rgba(255,255,255,0.8); }
@media (min-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr 1fr; text-align: left; }
    .hero-description { margin-left: 0; margin-right: 0; }
    .hero-buttons { justify-content: flex-start; }
}

/* Courses Section */
.courses-section { padding: 120px 20px; background: var(--color-bg); }
.section-header { text-align: center; max-width: 650px; margin: 0 auto 60px; }
.section-header .tag { margin-bottom: 12px; display: block; }
.section-header h2 { color: var(--color-dark); margin-bottom: 16px; }
.section-header p { color: var(--color-text-light); }
.courses-grid { display: grid; grid-template-columns: 1fr; gap: 30px; max-width: 1200px; margin: 0 auto; }
.course-card { background: var(--color-white); border-radius: 24px; overflow: hidden; transition: all 0.3s; box-shadow: 0 4px 20px rgba(0,0,0,0.05); }
.course-card:hover { transform: translateY(-8px); box-shadow: 0 20px 60px rgba(0,0,0,0.12); }
.course-image { position: relative; overflow: hidden; }
.course-image img { width: 100%; aspect-ratio: 16/10; object-fit: cover; transition: transform 0.4s; }
.course-card:hover .course-image img { transform: scale(1.05); }
.course-badge { position: absolute; top: 16px; left: 16px; background: var(--color-white); padding: 8px 16px; border-radius: 50px; font-size: 12px; font-weight: 600; color: var(--color-primary); }
.course-content { padding: 28px; }
.course-content h3 { color: var(--color-dark); margin-bottom: 12px; font-size: 1.25rem; }
.course-content h3 a { color: inherit; }
.course-content p { color: var(--color-text-light); font-size: 14px; margin-bottom: 20px; }
.course-meta { display: flex; justify-content: space-between; align-items: center; padding-top: 20px; border-top: 1px solid var(--color-border); }
.course-price { font-size: 1.25rem; font-weight: 700; color: var(--color-primary); }
.course-duration { font-size: 13px; color: var(--color-text-light); display: flex; align-items: center; gap: 6px; }
.course-duration svg { width: 16px; height: 16px; }
@media (min-width: 768px) { .courses-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .courses-grid { grid-template-columns: repeat(3, 1fr); } }
.center-button-wrapper { text-align: center; margin-top: 60px; }

/* Features Section */
.features-section { padding: 120px 20px; background: var(--color-white); }
.features-grid { display: grid; grid-template-columns: 1fr; gap: 40px; max-width: 1100px; margin: 60px auto 0; }
.feature-item { text-align: center; padding: 24px; }
.feature-icon { width: 72px; height: 72px; background: var(--gradient-light); border-radius: 20px; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; }
.feature-icon svg { width: 32px; height: 32px; stroke: var(--color-primary); stroke-width: 2; fill: none; }
.feature-item h3 { color: var(--color-dark); font-size: 1.125rem; margin-bottom: 10px; }
.feature-item p { color: var(--color-text-light); font-size: 14px; }
@media (min-width: 768px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .features-grid { grid-template-columns: repeat(4, 1fr); } }

/* Testimonials Section */
.testimonials-section { padding: 120px 20px; background: var(--color-dark); }
.testimonials-section .section-header h2 { color: var(--color-white); }
.testimonials-section .section-header p { color: rgba(255,255,255,0.6); }
.testimonials-grid { display: grid; grid-template-columns: 1fr; gap: 30px; max-width: 1100px; margin: 0 auto; }
.testimonial-card { background: rgba(255,255,255,0.05); padding: 36px; border-radius: 24px; border: 1px solid rgba(255,255,255,0.1); }
.testimonial-stars { display: flex; gap: 4px; margin-bottom: 20px; }
.testimonial-stars svg { width: 20px; height: 20px; fill: #fbbf24; }
.testimonial-card p { color: rgba(255,255,255,0.8); font-size: 15px; margin-bottom: 24px; }
.testimonial-author { display: flex; align-items: center; gap: 14px; }
.testimonial-author img { width: 50px; height: 50px; border-radius: 50%; object-fit: cover; }
.testimonial-author .name { font-weight: 600; color: var(--color-white); }
.testimonial-author .role { font-size: 13px; color: rgba(255,255,255,0.5); }
@media (min-width: 768px) { .testimonials-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .testimonials-grid { grid-template-columns: repeat(3, 1fr); } }

/* Footer */
.footer { background: #0f0f1a; padding: 80px 20px 40px; }
.footer-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr; gap: 40px; }
.footer-brand p { color: rgba(255,255,255,0.5); font-size: 14px; margin-top: 20px; max-width: 350px; }
.footer-links h4 { color: var(--color-white); font-size: 15px; font-weight: 600; margin-bottom: 20px; }
.footer-links a { display: block; color: rgba(255,255,255,0.5); font-size: 14px; margin-bottom: 12px; transition: color 0.3s; }
.footer-links a:hover { color: var(--color-primary); }
.footer-links .contact-info { color: rgba(255,255,255,0.5); font-size: 14px; margin-bottom: 12px; line-height: 1.6; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); margin-top: 60px; padding-top: 30px; display: flex; flex-direction: column; align-items: center; gap: 20px; }
.footer-disclaimer { font-size: 11px; color: rgba(255,255,255,0.35); margin-top: 20px; line-height: 1.6; text-align: center; }
.footer-socials { display: flex; gap: 12px; }
.footer-socials a { width: 44px; height: 44px; background: rgba(255,255,255,0.05); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: all 0.3s; }
.footer-socials a:hover { background: var(--gradient-primary); }
.footer-socials svg { width: 18px; height: 18px; fill: #ffffff; }
.copyright { font-size: 13px; color: rgba(255,255,255,0.4); }
@media (min-width: 768px) { .footer-inner { grid-template-columns: repeat(2, 1fr); } .footer-bottom { flex-direction: row; justify-content: space-between; } .footer-disclaimer { text-align: left; } }
@media (min-width: 1024px) { .footer-inner:not(.footer-bottom):not(.footer-disclaimer) { grid-template-columns: 2fr 1fr 1fr 1fr; } }

/* Contact Form */
.contact-form { background: var(--color-white); padding: 48px; border-radius: 24px; box-shadow: 0 20px 60px rgba(0,0,0,0.08); }
.form-row { display: grid; grid-template-columns: 1fr; gap: 20px; margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--color-dark); margin-bottom: 8px; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 16px 20px; border: 2px solid var(--color-border); border-radius: 12px; font-family: var(--font-body); font-size: 15px; transition: all 0.3s; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 4px rgba(102,126,234,0.1); }
.form-group textarea { min-height: 140px; resize: vertical; }
.form-checkbox { display: flex; align-items: start; gap: 12px; margin-bottom: 24px; }
.form-checkbox input[type="checkbox"] { width: 22px; height: 22px; margin-top: 2px; flex-shrink: 0; accent-color: var(--color-primary); }
.form-checkbox label { font-size: 14px; color: var(--color-text); }
.form-checkbox a { color: var(--color-primary); }
.form-submit { background: var(--gradient-primary); color: var(--color-white); border: none; padding: 18px 48px; font-family: var(--font-body); font-size: 15px; font-weight: 600; border-radius: 50px; cursor: pointer; transition: all 0.3s; }
.form-submit:hover { transform: translateY(-3px); box-shadow: 0 15px 40px rgba(102,126,234,0.4); color: white; }
@media (min-width: 768px) { .form-row.two-col { grid-template-columns: 1fr 1fr; } }

/* Cookie Banner */
.cookie-banner { position: fixed; bottom: -200px; left: 24px; right: 24px; max-width: 480px; background: var(--color-white); padding: 28px; border-radius: 20px; box-shadow: 0 20px 60px rgba(0,0,0,0.2); z-index: 9999; transition: bottom 0.5s ease-in-out; }
.cookie-banner.show { bottom: 24px; }
.cookie-text p { color: var(--color-text); font-size: 14px; margin-bottom: 20px; }
.cookie-text a { color: var(--color-primary); font-weight: 500; text-decoration: underline; }
.cookie-buttons { display: flex; gap: 12px; }
.cookie-accept { flex: 1; background: var(--gradient-primary); color: var(--color-white); border: none; padding: 12px 28px; font-weight: 600; font-size: 14px; border-radius: 50px; cursor: pointer; }
.cookie-decline { flex: 1; background: var(--color-bg); color: var(--color-text); border: none; padding: 12px 28px; font-weight: 600; font-size: 14px; border-radius: 50px; cursor: pointer; }

/* Page Specific Styles */
.page-header { padding: 80px 20px; text-align: center; background: var(--gradient-light); }
.page-header h1 { margin-top: 12px; margin-bottom: 16px; }
.page-header p { max-width: 700px; margin: 0 auto; }
.content-section { padding: 100px 20px; }
.content-section.bg-light { background: var(--color-bg); }
.content-grid { display: grid; grid-template-columns: 1fr; gap: 60px; align-items: center; } 
.content-text h2 { margin-bottom: 20px; } .content-text p { margin-bottom: 15px; }
.content-image img { border-radius: 24px; box-shadow: 0 15px 40px rgba(0,0,0,0.1); }
@media (min-width: 1024px) { .content-grid { grid-template-columns: 1fr 1fr; } .content-grid.reverse { grid-template-columns: 1fr 1fr; } .content-grid.reverse .content-image { order: 2; } }
.text-content { max-width: 800px; margin: 0 auto; } .text-content h3 { margin-top: 40px; margin-bottom: 15px; } .text-content p { margin-bottom: 15px; }

.cta-section { padding: 80px 20px; background: var(--gradient-primary); text-align: center; }
.cta-section h2 { color: var(--color-white); margin-bottom: 16px; }
.cta-section p { color: rgba(255,255,255,0.8); max-width: 500px; margin: 0 auto 30px; }

.contact-section { padding: 100px 20px; }
.contact-grid { display: grid; grid-template-columns: 1fr; gap: 60px; max-width: 1100px; margin: 0 auto; }
.contact-details h3 { margin-bottom: 20px; }
.contact-item { margin-bottom: 20px; } .contact-item strong { display: block; margin-bottom: 5px; color: var(--color-dark); }
@media (min-width: 1024px) { .contact-grid { grid-template-columns: 1fr 1.5fr; } }

.instructors-section { padding: 100px 20px; }
.instructors-grid { display: grid; grid-template-columns: 1fr; gap: 30px; }
.instructor-card { background: var(--color-white); border-radius: 24px; box-shadow: 0 4px 20px rgba(0,0,0,0.05); text-align: center; padding: 40px 20px; }
.instructor-card img { width: 140px; height: 140px; border-radius: 50%; object-fit: cover; margin: 0 auto 20px; border: 5px solid var(--color-bg); }
.instructor-info .role { color: var(--color-primary); font-weight: 600; margin: 5px 0 15px; }
.instructor-info .bio { font-size: 14px; color: var(--color-text-light); }
@media (min-width: 768px) { .instructors-grid { grid-template-columns: repeat(2, 1fr); } }

/* Course Detail Page */
.course-hero { background: var(--gradient-primary); }
.course-hero .tag { color: rgba(255,255,255,0.9); background: none; -webkit-text-fill-color: initial; }
.course-hero h1, .course-hero p { color: var(--color-white); }
.course-hero p { color: rgba(255,255,255,0.8); }
.course-hero-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: 24px; margin-top: 30px; color: var(--color-white); font-size: 14px; }
.course-page-layout { display: grid; grid-template-columns: 1fr; gap: 60px; max-width: 1200px; margin: 80px auto; padding: 0 20px; }
.course-main-content h2 { margin-top: 40px; margin-bottom: 20px; } .course-main-content h3 { margin-top: 30px; margin-bottom: 15px; }.course-main-content p { margin-bottom: 20px; }
.course-main-image { border-radius: 24px; margin-bottom: 40px; }
.learning-outcomes { list-style: none; padding-left: 0; } .learning-outcomes li { position: relative; padding-left: 30px; margin-bottom: 12px; } .learning-outcomes li::before { content: '✔'; position: absolute; left: 0; color: var(--color-success); font-weight: bold; }
.curriculum .module { border: 1px solid var(--color-border); border-radius: 12px; margin-bottom: 15px; overflow: hidden; }
.curriculum .module-header { padding: 16px 20px; background-color: var(--color-bg); cursor: pointer; }
.curriculum .module-content { padding: 20px; display: none; } /* JS needed to toggle display */
.curriculum .module-content:first-of-type { display: block; } /* Show first by default */
.course-sidebar .course-enroll-card { background: var(--color-white); padding: 32px; border-radius: 24px; box-shadow: 0 10px 40px rgba(0,0,0,0.08); position: sticky; top: 120px; }
.price-tag { font-size: 2rem; font-weight: 800; color: var(--color-dark); margin-bottom: 20px; } .price-tag .original-price { font-size: 1rem; color: var(--color-text-light); text-decoration: line-through; margin-left: 10px; }
.form-submit.full-width { display: block; width: 100%; text-align: center; margin-bottom: 20px; }
.course-enroll-card h4 { margin-top: 24px; margin-bottom: 15px; font-size: 1rem; }
.course-enroll-card ul { list-style: none; } .course-enroll-card ul li { position: relative; padding-left: 25px; margin-bottom: 10px; font-size: 14px; } .course-enroll-card ul li::before { content: '•'; position: absolute; left: 0; color: var(--color-primary); font-size: 1.2rem; line-height: 1; }
@media (min-width: 1024px) { .course-page-layout { grid-template-columns: 2fr 1fr; } }