/* ============================================================
   GERVASI ACADEMY — Design System
   Paleta: Negro profundo, Blanco, Dorado (#c9a84c), Crema (#f7f3ed)
   ============================================================ */

:root {
    --black: #0a0a0a;
    --black-soft: #111111;
    --black-mid: #1a1a1a;
    --gray-dark: #2d2d2d;
    --gray: #6b6b6b;
    --gray-light: #9a9a9a;
    --gray-border: #e8e3dc;
    --white: #ffffff;
    --cream: #f7f3ed;
    --cream-dark: #ede8e0;
    --gold: #c9a84c;
    --gold-light: #e0c06a;
    --gold-dark: #a8882e;
    --gold-pale: #f5ead0;
    --success: #2d7a4a;
    --error: #c0392b;
    --warning: #d4a017;

    --font-display: 'Lato', sans-serif;
    --font-body: 'Lato', sans-serif;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,.10);
    --shadow-lg: 0 8px 32px rgba(0,0,0,.14);
    --shadow-gold: 0 4px 20px rgba(201,168,76,.25);

    --nav-h: 72px;
    --transition: 0.25s ease;
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    background: var(--white);
    color: var(--black);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* CONTAINER */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 800px; margin: 0 auto; padding: 0 24px; }
.container-lg { max-width: 1400px; margin: 0 auto; padding: 0 24px; }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    z-index: 1000;
    background: rgba(10,10,10,.96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(201,168,76,.15);
    transition: var(--transition);
}
.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,.4);
}
.nav-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 40px;
}
.nav-logo {
    display: flex;
    flex-direction: column;
    line-height: 1;
    text-decoration: none;
    flex-shrink: 0;
}
.logo-text {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 4px;
}
.logo-sub {
    font-size: 9px;
    letter-spacing: 6px;
    color: var(--gold);
    font-weight: 500;
    margin-top: 1px;
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
}
.nav-link {
    color: rgba(255,255,255,.75);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    white-space: nowrap;
}
.nav-link:hover { color: var(--white); background: rgba(255,255,255,.06); }
.nav-link.active { color: var(--gold); }

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}
.btn-nav-user {
    display: flex;
    align-items: center;
    gap: 6px;
    color: rgba(255,255,255,.8);
    font-size: 14px;
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.btn-nav-user:hover { color: var(--white); background: rgba(255,255,255,.06); }
.btn-nav-user i { font-size: 18px; color: var(--gold); }
.btn-nav {
    font-size: 13px;
    font-weight: 600;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    white-space: nowrap;
}
.btn-nav-ghost { color: rgba(255,255,255,.7); }
.btn-nav-ghost:hover { color: var(--white); background: rgba(255,255,255,.08); }
.btn-nav-outline {
    color: var(--gold);
    border: 1px solid rgba(201,168,76,.4);
}
.btn-nav-outline:hover { background: rgba(201,168,76,.1); }
.btn-nav-primary {
    background: var(--gold);
    color: var(--black);
}
.btn-nav-primary:hover { background: var(--gold-light); box-shadow: var(--shadow-gold); }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 6px;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
    padding-top: var(--nav-h);
    min-height: 100vh;
    background: var(--black);
    background-image: url('https://images.unsplash.com/photo-1611085583191-a3b181a88401?w=1600&q=80&auto=format&fit=crop');
    background-size: cover;
    background-position: center 30%;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(0,0,0,.82) 0%, rgba(0,0,0,.6) 50%, rgba(0,0,0,.75) 100%),
        radial-gradient(ellipse 55% 70% at 75% 50%, rgba(201,168,76,.18) 0%, transparent 65%),
        radial-gradient(ellipse 35% 50% at 15% 75%, rgba(201,168,76,.10) 0%, transparent 55%);
}
.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='1' fill='rgba(201,168,76,0.08)'/%3E%3C/svg%3E");
    background-size: 60px 60px;
}
.hero-two-col {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 60px;
    align-items: center;
    min-height: calc(100vh - var(--nav-h));
    padding: 60px 0;
}
.hero-content {
    position: relative;
    z-index: 1;
}

/* Carrusel hero */
.hero-carousel-wrap {
    position: relative;
    z-index: 1;
}
.hero-carousel-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--gray);
    margin-bottom: 12px;
}
.hero-carousel {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
}
.hero-course-card {
    display: none;
    text-decoration: none;
    color: inherit;
    background: var(--white);
    border: 1px solid var(--gray-border);
    border-radius: 16px;
    overflow: hidden;
    transition: transform .3s, box-shadow .3s;
}
.hero-course-card:hover { transform: translateY(-4px); box-shadow: 0 20px 50px rgba(0,0,0,.4); }
.hero-course-card.active { display: block; animation: fadeSlide .4s ease; }
@keyframes fadeSlide {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}
.hero-course-thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: rgba(0,0,0,.3);
}
.hero-course-thumb img { width: 100%; height: 100%; object-fit: cover; }
.hero-course-thumb-placeholder {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    color: var(--gold); font-size: 48px;
    background: linear-gradient(135deg, rgba(201,168,76,.1), rgba(201,168,76,.05));
}
.hero-course-badge {
    position: absolute; top: 12px; left: 12px;
    background: var(--gold); color: var(--black);
    font-size: 10px; font-weight: 800; text-transform: uppercase;
    letter-spacing: 1px; padding: 4px 10px; border-radius: 20px;
}
.hero-course-info { padding: 18px 20px; }
.hero-course-cat {
    font-size: 10px; font-weight: 700; text-transform: uppercase;
    letter-spacing: 1.5px; color: var(--gold); margin-bottom: 6px;
}
.hero-course-title {
    font-size: 17px; font-weight: 800; color: var(--black);
    line-height: 1.3; margin-bottom: 12px;
}
.hero-course-meta {
    display: flex; align-items: center; justify-content: space-between;
    font-size: 12px; color: var(--gray);
}
.hero-course-meta i { margin-right: 4px; }
.hero-course-price { font-size: 15px; font-weight: 800; color: var(--gold); }
.hero-carousel-dots {
    display: flex; gap: 6px; justify-content: center; margin-top: 14px;
}
.hero-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--gray-border); border: none; cursor: pointer;
    transition: background .2s, transform .2s; padding: 0;
}
.hero-dot.active { background: var(--gold); transform: scale(1.3); }
@media (max-width: 900px) {
    .hero-two-col { grid-template-columns: 1fr; }
    .hero-carousel-wrap { display: none; }
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(201,168,76,.12);
    border: 1px solid rgba(201,168,76,.3);
    color: var(--gold);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    margin-bottom: 28px;
}
.hero-badge i { font-size: 10px; }
.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 700;
    color: var(--black);
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 24px;
}
.hero h1 em {
    font-style: normal;
    color: var(--gold);
}
.hero p {
    font-size: 18px;
    color: rgba(255,255,255,.65);
    margin-bottom: 40px;
    max-width: 520px;
    line-height: 1.7;
}
.hero-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 60px;
}
.hero-stats {
    display: flex;
    gap: 40px;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,.12);
}
.hero-stat-number {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--white);
}
.hero-stat-label {
    font-size: 12px;
    color: rgba(255,255,255,.4);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-top: 2px;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    border: none;
    line-height: 1;
    white-space: nowrap;
}
.btn-primary {
    background: var(--gold);
    color: var(--black);
}
.btn-primary:hover {
    background: var(--gold-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-gold);
}
.btn-outline {
    background: transparent;
    color: var(--white);
    border: 1.5px solid rgba(255,255,255,.3);
}
.btn-outline:hover {
    border-color: var(--white);
    background: rgba(255,255,255,.06);
}
.btn-outline-dark {
    background: transparent;
    color: var(--black);
    border: 1.5px solid var(--gray-border);
}
.btn-outline-dark:hover {
    border-color: var(--black);
    background: var(--black);
    color: var(--white);
}
.btn-dark {
    background: var(--black);
    color: var(--white);
}
.btn-dark:hover { background: var(--black-mid); transform: translateY(-1px); }
.btn-sm { font-size: 13px; padding: 9px 18px; }
.btn-lg { font-size: 17px; padding: 17px 36px; }
.btn-full { width: 100%; justify-content: center; }

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section { padding: 100px 0; }
.section-sm { padding: 60px 0; }
.section-dark { background: var(--black); }
.section-cream { background: var(--cream); }

.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.section-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 14px;
}
.section-title {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 700;
    color: var(--black);
    line-height: 1.2;
    margin-bottom: 16px;
}
.section-title-white { color: var(--white); }
.section-subtitle {
    font-size: 17px;
    color: var(--gray);
    max-width: 540px;
    margin: 0 auto;
    line-height: 1.7;
}
.section-subtitle-white { color: rgba(255,255,255,.55); }

/* ============================================================
   COURSE CARDS
   ============================================================ */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 28px;
}
.course-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-border);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.course-card-thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--cream);
}
.course-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.course-card:hover .course-card-thumb img { transform: scale(1.04); }
.course-card-thumb-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--cream) 0%, var(--cream-dark) 100%);
    color: var(--gold);
    font-size: 48px;
}
.course-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--gold);
    color: var(--black);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: var(--radius-full);
}
.course-badge-new { background: var(--black); color: var(--white); }

.course-card-body {
    padding: 20px 22px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.course-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    font-size: 12px;
    color: var(--gray);
}
.course-meta-cat {
    color: var(--gold-dark);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.course-card-title {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    line-height: 1.35;
    margin-bottom: 8px;
    color: var(--black);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.course-card-desc {
    font-size: 13.5px;
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}
.course-card-instructor {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    font-size: 13px;
    color: var(--gray);
}
.instructor-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--gold-pale);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold-dark);
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
    overflow: hidden;
}
.instructor-avatar img { width: 100%; height: 100%; object-fit: cover; }

.course-card-stats {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    font-size: 12px;
    color: var(--gray);
}
.course-stat { display: flex; align-items: center; gap: 4px; }
.course-stat i { color: var(--gold); font-size: 11px; }

.course-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--gray-border);
}
.course-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
}
.price-current {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--black);
}
.price-original {
    font-size: 14px;
    color: var(--gray-light);
    text-decoration: line-through;
}
.price-free {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--gold);
}

.rating {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
}
.stars { color: var(--gold); }
.rating-count { color: var(--gray); }

/* ============================================================
   FEATURED COURSES (Horizontal scroll)
   ============================================================ */
.courses-scroll-wrapper {
    position: relative;
}
.courses-scroll {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 320px;
    gap: 24px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 16px;
    scrollbar-width: thin;
    scrollbar-color: var(--gold-pale) transparent;
}
.courses-scroll::-webkit-scrollbar { height: 4px; }
.courses-scroll::-webkit-scrollbar-thumb { background: var(--gold-pale); border-radius: 2px; }
.courses-scroll .course-card { scroll-snap-align: start; }

/* ============================================================
   CATEGORY CARDS
   ============================================================ */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}
.category-card {
    background: var(--cream);
    border-radius: var(--radius-md);
    padding: 28px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 1.5px solid transparent;
    text-decoration: none;
    color: var(--black);
    display: block;
}
.category-card:hover {
    background: var(--white);
    border-color: var(--gold);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.category-icon {
    width: 56px;
    height: 56px;
    background: var(--white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    font-size: 24px;
    color: var(--gold);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.category-card:hover .category-icon {
    background: var(--gold);
    color: var(--black);
    box-shadow: var(--shadow-gold);
}
.category-name { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.category-count { font-size: 12px; color: var(--gray); }

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    position: relative;
}
.step {
    text-align: center;
    position: relative;
}
.step-number {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--gold-pale);
    color: var(--gold-dark);
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    border: 2px solid var(--gold);
}
.step-title { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.step-desc { font-size: 14px; color: var(--gray); line-height: 1.6; }

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}
.testimonial-card {
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: var(--radius-lg);
    padding: 28px;
}
.testimonial-stars { color: var(--gold); font-size: 14px; margin-bottom: 14px; }
.testimonial-text {
    font-size: 15px;
    color: rgba(255,255,255,.7);
    line-height: 1.7;
    margin-bottom: 20px;
    font-style: italic;
}
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--gold-pale);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--gold-dark);
    font-size: 16px;
    overflow: hidden;
}
.testimonial-name { font-size: 14px; font-weight: 600; color: var(--white); }
.testimonial-course { font-size: 12px; color: rgba(255,255,255,.4); }

/* ============================================================
   COURSE DETAIL PAGE
   ============================================================ */
.course-hero {
    background: var(--black);
    padding: calc(var(--nav-h) + 60px) 0 60px;
}
.course-hero-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 60px;
    align-items: start;
}
.course-hero-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255,255,255,.4);
    margin-bottom: 20px;
}
.course-hero-breadcrumb a { color: rgba(255,255,255,.5); transition: var(--transition); }
.course-hero-breadcrumb a:hover { color: var(--gold); }
.course-hero-breadcrumb i { font-size: 10px; }
.course-hero h1 {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 46px);
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 16px;
}
.course-hero-desc {
    font-size: 17px;
    color: rgba(255,255,255,.6);
    line-height: 1.7;
    margin-bottom: 24px;
}
.course-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 28px;
}
.course-hero-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: rgba(255,255,255,.6);
}
.course-hero-meta-item i { color: var(--gold); }
.course-hero-meta-item strong { color: var(--white); }

/* Buy box */
.buy-box {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: calc(var(--nav-h) + 20px);
}
.buy-box-preview {
    position: relative;
    aspect-ratio: 16/9;
    background: var(--cream);
    cursor: pointer;
    overflow: hidden;
}
.buy-box-preview img { width: 100%; height: 100%; object-fit: cover; }
.buy-box-preview-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.4);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.buy-box-preview-overlay:hover { background: rgba(0,0,0,.3); }
.play-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--black);
    font-size: 20px;
    padding-left: 4px;
    box-shadow: 0 4px 20px rgba(0,0,0,.3);
    transition: var(--transition);
}
.buy-box-preview-overlay:hover .play-btn { transform: scale(1.08); }
.buy-box-body { padding: 24px; }
.buy-box-price {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 8px;
}
.buy-box-price .price-current { font-size: 32px; }
.buy-box-discount {
    font-size: 12px;
    font-weight: 700;
    color: var(--success);
    background: rgba(45,122,74,.1);
    padding: 3px 8px;
    border-radius: var(--radius-full);
}
.buy-box-timer {
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 20px;
}
.buy-box-timer strong { color: var(--error); }
.buy-box-body .btn { margin-bottom: 12px; }
.buy-box-guarantee {
    text-align: center;
    font-size: 12px;
    color: var(--gray);
    margin-top: 12px;
}
.buy-box-guarantee i { color: var(--gold); margin-right: 4px; }
.buy-box-includes { border-top: 1px solid var(--gray-border); padding: 20px 24px; }
.buy-box-includes h4 { font-size: 14px; font-weight: 600; margin-bottom: 14px; }
.buy-box-includes ul { display: flex; flex-direction: column; gap: 10px; }
.buy-box-includes li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13.5px;
    color: var(--gray-dark);
}
.buy-box-includes li i { color: var(--gold); width: 16px; }

/* Tabs */
.course-tabs { background: var(--white); }
.tabs-nav {
    display: flex;
    border-bottom: 1px solid var(--gray-border);
    overflow-x: auto;
    scrollbar-width: none;
}
.tabs-nav::-webkit-scrollbar { display: none; }
.tab-btn {
    padding: 16px 22px;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray);
    border-bottom: 2px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
    cursor: pointer;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    margin-bottom: -1px;
}
.tab-btn:hover { color: var(--black); }
.tab-btn.active { color: var(--black); border-bottom-color: var(--gold); }
.tab-content { display: none; padding: 40px 0; }
.tab-content.active { display: block; }

/* Curriculum */
.curriculum-module { margin-bottom: 4px; }
.module-header {
    background: var(--cream);
    border: 1px solid var(--gray-border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    transition: var(--transition);
    margin-bottom: 2px;
}
.module-header:hover { background: var(--cream-dark); }
.module-header.open { border-radius: var(--radius-md) var(--radius-md) 0 0; }
.module-header-left { display: flex; align-items: center; gap: 12px; }
.module-lock { color: var(--gray-light); font-size: 14px; }
.module-lock.unlocked { color: var(--gold); }
.module-title { font-size: 15px; font-weight: 600; }
.module-subtitle { font-size: 12px; color: var(--gray); margin-top: 2px; }
.module-toggle { color: var(--gray); transition: var(--transition); }
.module-header.open .module-toggle { transform: rotate(180deg); }
.module-lessons { display: none; border: 1px solid var(--gray-border); border-top: none; border-radius: 0 0 var(--radius-md) var(--radius-md); overflow: hidden; }
.module-header.open + .module-lessons { display: block; }
.lesson-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 13px 20px;
    font-size: 14px;
    border-top: 1px solid var(--gray-border);
    transition: var(--transition);
    cursor: pointer;
    color: var(--gray-dark);
}
.lesson-item:first-child { border-top: none; }
.lesson-item:hover { background: var(--cream); color: var(--black); }
.lesson-item.completed { color: var(--gray); }
.lesson-item.completed .lesson-icon { color: var(--success); }
.lesson-icon { color: var(--gray-light); font-size: 14px; width: 20px; text-align: center; flex-shrink: 0; }
.lesson-preview-tag {
    margin-left: auto;
    font-size: 11px;
    font-weight: 600;
    color: var(--gold-dark);
    background: var(--gold-pale);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}
.lesson-duration { font-size: 12px; color: var(--gray); margin-left: auto; flex-shrink: 0; }

/* ============================================================
   VIDEO PLAYER
   ============================================================ */
.video-wrapper {
    position: relative;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.video-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
}
.video-locked {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--black) 0%, var(--black-mid) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 16px;
    color: var(--white);
}
.video-locked i { font-size: 48px; color: var(--gold); opacity: .6; }
.video-locked h3 { font-family: var(--font-display); font-size: 22px; }
.video-locked p { font-size: 14px; color: rgba(255,255,255,.5); }

/* ============================================================
   DASHBOARD
   ============================================================ */
.dashboard-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: calc(100vh - var(--nav-h));
    margin-top: var(--nav-h);
}
.sidebar {
    background: var(--cream);
    border-right: 1px solid var(--gray-border);
    padding: 32px 16px;
    position: sticky;
    top: var(--nav-h);
    height: calc(100vh - var(--nav-h));
    overflow-y: auto;
}
.sidebar-user {
    text-align: center;
    padding: 20px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--gray-border);
}
.sidebar-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--gold-pale);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    color: var(--gold-dark);
    margin: 0 auto 12px;
    border: 3px solid var(--gold);
    overflow: hidden;
}
.sidebar-avatar img { width: 100%; height: 100%; object-fit: cover; }
.sidebar-name { font-size: 15px; font-weight: 600; }
.sidebar-email { font-size: 12px; color: var(--gray); }
.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--gray-dark);
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 2px;
}
.sidebar-nav a:hover { background: var(--cream-dark); color: var(--black); }
.sidebar-nav a.active { background: var(--black); color: var(--white); }
.sidebar-nav a i { width: 18px; text-align: center; font-size: 15px; }
.sidebar-nav a.active i { color: var(--gold); }

.dashboard-main { padding: 40px; background: var(--white); }
.dashboard-greeting { margin-bottom: 36px; }
.dashboard-greeting h1 {
    font-family: var(--font-display);
    font-size: 28px;
    margin-bottom: 4px;
}
.dashboard-greeting p { color: var(--gray); font-size: 15px; }

.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}
.stat-card {
    background: var(--cream);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}
.stat-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--gold-pale);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold-dark);
    font-size: 20px;
    flex-shrink: 0;
}
.stat-card-number { font-family: var(--font-display); font-size: 28px; font-weight: 700; }
.stat-card-label { font-size: 12px; color: var(--gray); }

.enrolled-courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}
.enrolled-card {
    border: 1px solid var(--gray-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}
.enrolled-card:hover { border-color: var(--gold); box-shadow: var(--shadow-md); }
.enrolled-thumb {
    aspect-ratio: 16/9;
    background: var(--cream);
    position: relative;
    overflow: hidden;
}
.enrolled-thumb img { width: 100%; height: 100%; object-fit: cover; }
.enrolled-body { padding: 16px; }
.enrolled-title { font-size: 15px; font-weight: 600; margin-bottom: 12px; line-height: 1.35; }
.progress-bar-wrap { margin-bottom: 8px; }
.progress-label {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--gray);
    margin-bottom: 6px;
}
.progress-bar {
    height: 5px;
    background: var(--gray-border);
    border-radius: var(--radius-full);
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--gold) 0%, var(--gold-light) 100%);
    border-radius: var(--radius-full);
    transition: width 0.8s ease;
}

/* ============================================================
   ADMIN
   ============================================================ */
.admin-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
}
.admin-sidebar {
    background: var(--black);
    color: var(--white);
    padding: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}
.admin-logo {
    padding: 24px 20px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.admin-nav { padding: 16px 12px; }
.admin-nav-section {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    color: rgba(255,255,255,.3);
    text-transform: uppercase;
    padding: 8px 8px 4px;
    margin-top: 16px;
}
.admin-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 8px;
    border-radius: var(--radius-sm);
    color: rgba(255,255,255,.6);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 2px;
}
.admin-nav a:hover { color: var(--white); background: rgba(255,255,255,.06); }
.admin-nav a.active { color: var(--white); background: rgba(201,168,76,.15); }
.admin-nav a.active i { color: var(--gold); }
.admin-nav a i { width: 18px; font-size: 14px; }

.admin-main { background: #f5f5f5; min-height: 100vh; }
.admin-topbar {
    background: var(--white);
    padding: 0 32px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--gray-border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.admin-topbar h1 { font-size: 20px; font-weight: 700; }
.admin-content { padding: 32px; }

.admin-table-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.admin-table {
    width: 100%;
    border-collapse: collapse;
}
.admin-table th {
    text-align: left;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--gray);
    padding: 14px 20px;
    background: var(--cream);
    border-bottom: 1px solid var(--gray-border);
}
.admin-table td {
    padding: 14px 20px;
    font-size: 14px;
    border-bottom: 1px solid var(--gray-border);
    vertical-align: middle;
}
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--cream); }

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
}
.badge-success { background: rgba(45,122,74,.1); color: var(--success); }
.badge-warning { background: rgba(212,160,23,.1); color: var(--warning); }
.badge-error { background: rgba(192,57,43,.1); color: var(--error); }
.badge-gray { background: var(--cream); color: var(--gray); }

/* ============================================================
   FORMS
   ============================================================ */
.form-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-border);
}
.form-group { margin-bottom: 20px; }
.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-dark);
    margin-bottom: 7px;
}
.form-control {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    font-family: var(--font-body);
    border: 1.5px solid var(--gray-border);
    border-radius: var(--radius-sm);
    background: var(--white);
    color: var(--black);
    transition: var(--transition);
    outline: none;
}
.form-control:focus { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(201,168,76,.12); }
.form-control::placeholder { color: var(--gray-light); }
textarea.form-control { resize: vertical; min-height: 120px; }
select.form-control { appearance: none; cursor: pointer; }
.form-text { font-size: 12px; color: var(--gray); margin-top: 5px; }
.form-error { font-size: 12px; color: var(--error); margin-top: 5px; }

.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.alert-success { background: rgba(45,122,74,.08); color: var(--success); border: 1px solid rgba(45,122,74,.2); }
.alert-error { background: rgba(192,57,43,.08); color: var(--error); border: 1px solid rgba(192,57,43,.2); }
.alert-info { background: rgba(201,168,76,.08); color: var(--gold-dark); border: 1px solid rgba(201,168,76,.2); }

/* AUTH PAGES */
.auth-page {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding-top: var(--nav-h);
}
.auth-left {
    background: var(--black);
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.auth-left::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(201,168,76,.12) 0%, transparent 60%);
}
.auth-left-content { position: relative; z-index: 1; }
.auth-left h2 {
    font-family: var(--font-display);
    font-size: 40px;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 20px;
}
.auth-left h2 em { font-style: normal; color: var(--gold); }
.auth-left p { font-size: 16px; color: rgba(255,255,255,.55); line-height: 1.7; }
.auth-left-perks { display: flex; flex-direction: column; gap: 14px; margin-top: 36px; }
.perk {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,.7);
    font-size: 14px;
}
.perk-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: rgba(201,168,76,.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold);
    flex-shrink: 0;
}
.auth-right {
    padding: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
}
.auth-form-container { width: 100%; max-width: 440px; }
.auth-form-title { font-family: var(--font-display); font-size: 30px; font-weight: 700; margin-bottom: 6px; }
.auth-form-subtitle { font-size: 15px; color: var(--gray); margin-bottom: 32px; }
.form-divider {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--gray);
    font-size: 12px;
    margin: 20px 0;
}
.form-divider::before, .form-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gray-border);
}

/* ============================================================
   PAYMENT / CHECKOUT
   ============================================================ */
.checkout-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 40px;
    align-items: start;
}
.payment-methods { display: flex; flex-direction: column; gap: 12px; margin-bottom: 24px; }
.payment-method {
    border: 1.5px solid var(--gray-border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 14px;
    transition: var(--transition);
    position: relative;
}
.payment-method input[type="radio"] { accent-color: var(--gold); width: 18px; height: 18px; }
.payment-method.selected { border-color: var(--gold); background: var(--gold-pale); }
.payment-method-logo { height: 24px; }
.payment-method-name { font-size: 14px; font-weight: 600; }
.payment-method-desc { font-size: 12px; color: var(--gray); }

.order-summary {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1.5px solid var(--gray-border);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: calc(var(--nav-h) + 20px);
}
.order-summary h3 { font-size: 18px; font-weight: 700; margin-bottom: 20px; }
.order-item {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--gray-border);
}
.order-item-thumb {
    width: 64px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--cream-dark);
    flex-shrink: 0;
    overflow: hidden;
}
.order-item-thumb img { width: 100%; height: 100%; object-fit: cover; }
.order-item-name { font-size: 13px; font-weight: 600; line-height: 1.35; }
.order-totals { display: flex; flex-direction: column; gap: 10px; }
.order-total-row {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--gray);
}
.order-total-row.final {
    font-size: 18px;
    font-weight: 700;
    color: var(--black);
    padding-top: 12px;
    border-top: 1.5px solid var(--gray-border);
}
.order-total-row.final span:last-child {
    font-family: var(--font-display);
    color: var(--gold-dark);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background: var(--black);
    color: rgba(255,255,255,.6);
}
.footer-top {
    padding: 64px 0 48px;
    border-bottom: 1px solid rgba(255,255,255,.07);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
}
.footer-brand .footer-logo {
    display: flex;
    flex-direction: column;
    line-height: 1;
    margin-bottom: 16px;
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255,255,255,.45);
    max-width: 280px;
    margin-bottom: 24px;
}
.footer-social {
    display: flex;
    gap: 10px;
}
.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,.5);
    font-size: 14px;
    transition: var(--transition);
}
.footer-social a:hover {
    border-color: var(--gold);
    color: var(--gold);
    background: rgba(201,168,76,.1);
}
.footer-col h4 {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--white);
    margin-bottom: 18px;
}
.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-col ul li a {
    font-size: 14px;
    color: rgba(255,255,255,.45);
    transition: var(--transition);
}
.footer-col ul li a:hover {
    color: var(--gold);
    padding-left: 4px;
}
.footer-bottom {
    padding: 20px 0;
}
.footer-bottom .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,.3);
}
.footer-payment-icons {
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: .5;
}

@media (max-width: 900px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-bottom .container { flex-direction: column; text-align: center; }
}

/* ============================================================
   UTILITIES
   ============================================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-auto { margin-top: auto; }
.mb-0 { margin-bottom: 0 !important; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-40 { margin-bottom: 40px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.d-none { display: none !important; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .course-hero-grid { grid-template-columns: 1fr; }
    .buy-box { position: static; }
    .auth-page { grid-template-columns: 1fr; }
    .auth-left { display: none; }
    .checkout-grid { grid-template-columns: 1fr; }
    .dashboard-layout { grid-template-columns: 1fr; }
    .sidebar { position: static; height: auto; }
    .admin-layout { grid-template-columns: 1fr; }
    .admin-sidebar { display: none; }
}
@media (max-width: 768px) {
    :root { --nav-h: 64px; }
    .nav-menu { display: none; }
    .nav-menu.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: var(--nav-h);
        left: 0; right: 0;
        background: var(--black);
        padding: 16px;
        border-top: 1px solid rgba(255,255,255,.08);
        box-shadow: var(--shadow-lg);
        z-index: 999;
    }
    .nav-toggle { display: flex; }
    .nav-actions .btn-nav-ghost { display: none; }
    .section { padding: 60px 0; }
    .hero-stats { flex-wrap: wrap; gap: 24px; }
    .hero h1 { font-size: 36px; }
    .courses-grid { grid-template-columns: 1fr; }
    .categories-grid { grid-template-columns: repeat(2, 1fr); }
    .auth-right { padding: 32px 20px; }
    .form-card { padding: 24px 20px; }
    .dashboard-main { padding: 20px; }
    .admin-content { padding: 16px; }
}
@media (max-width: 480px) {
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; justify-content: center; }
    .categories-grid { grid-template-columns: repeat(2, 1fr); }
    .steps-grid { grid-template-columns: 1fr; gap: 28px; }
    .buy-box-body .btn { font-size: 14px; padding: 13px 20px; }
}