/* ============================================
   SkillForge — Design System & Styles
   ============================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Colors — Dark Palette */
  --bg-primary: #0A0A0F;
  --bg-secondary: #0F0F17;
  --bg-card: #13131A;
  --bg-card-hover: #1A1A24;
  --bg-elevated: #1E1E2A;

  /* Accent Colors */
  --violet: #7C3AED;
  --violet-light: #A78BFA;
  --violet-dark: #5B21B6;
  --cyan: #06B6D4;
  --cyan-light: #67E8F9;
  --cyan-dark: #0891B2;
  --emerald: #10B981;
  --amber: #F59E0B;
  --rose: #F43F5E;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--violet) 0%, var(--cyan) 100%);
  --gradient-violet: linear-gradient(135deg, var(--violet-dark) 0%, var(--violet-light) 100%);
  --gradient-card: linear-gradient(135deg, rgba(124, 58, 237, 0.08) 0%, rgba(6, 182, 212, 0.08) 100%);
  --gradient-glow: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(124, 58, 237, 0.06), transparent 40%);

  /* Text */
  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-accent: var(--violet-light);

  /* Border */
  --border-subtle: rgba(148, 163, 184, 0.08);
  --border-card: rgba(148, 163, 184, 0.12);
  --border-accent: rgba(124, 58, 237, 0.3);

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --container-max: 75rem;
  --container-padding: 1.5rem;
  --section-padding: 6rem;

  /* Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 62.4375rem;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Glassmorphism */
  --glass-bg: rgba(19, 19, 26, 0.6);
  --glass-blur: blur(1rem);
  --glass-border: 1px solid rgba(148, 163, 184, 0.1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  background: rgba(124, 58, 237, 0.1);
  border: 1px solid rgba(124, 58, 237, 0.25);
  border-radius: var(--radius-full);
  color: var(--violet-light);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-title span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 36rem;
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-header--center {
  text-align: center;
}

.section-header--center .section-subtitle {
  margin: 0 auto;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn svg {
  width: 1.125rem;
  height: 1.125rem;
  transition: transform var(--transition-base);
}

.btn--primary {
  background: var(--gradient-primary);
  color: white;
  border: none;
  box-shadow: 0 0 1.5rem rgba(124, 58, 237, 0.3), 0 0 3rem rgba(124, 58, 237, 0.1);
}

.btn--primary:hover {
  transform: translateY(-0.125rem);
  box-shadow: 0 0 2rem rgba(124, 58, 237, 0.5), 0 0 4rem rgba(124, 58, 237, 0.2);
}

.btn--primary:hover svg {
  transform: translateX(0.25rem);
}

.btn--ghost {
  background: rgba(148, 163, 184, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  backdrop-filter: blur(0.5rem);
}

.btn--ghost:hover {
  background: rgba(148, 163, 184, 0.15);
  border-color: rgba(148, 163, 184, 0.25);
  transform: translateY(-0.125rem);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-card);
}

.btn--outline:hover {
  background: rgba(124, 58, 237, 0.1);
  border-color: var(--border-accent);
  color: var(--violet-light);
}

/* ---------- Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(2rem);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ============================================
   HEADER
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition-base);
}

.header.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(1rem);
  -webkit-backdrop-filter: blur(1rem);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.625rem 0;
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-primary);
  z-index: 1001;
}

.header__logo-icon {
  width: 2.25rem;
  height: 2.25rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.header__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.header__link::after {
  content: '';
  position: absolute;
  bottom: -0.25rem;
  left: 0;
  width: 0;
  height: 0.125rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.header__link:hover {
  color: var(--text-primary);
}

.header__link:hover::after {
  width: 100%;
}

.header__link--cta {
  background: var(--gradient-primary);
  color: white !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.header__link--cta::after {
  display: none;
}

.header__link--cta:hover {
  box-shadow: 0 0 1.5rem rgba(124, 58, 237, 0.4);
  transform: translateY(-0.0625rem);
}

.header__burger {
  display: none;
  flex-direction: column;
  gap: 0.375rem;
  z-index: 1001;
  padding: 0.25rem;
}

.header__burger span {
  display: block;
  width: 1.5rem;
  height: 0.125rem;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: var(--transition-base);
}

.header__burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(0.375rem, 0.375rem);
}

.header__burger.active span:nth-child(2) {
  opacity: 0;
}

.header__burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(0.375rem, -0.375rem);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 5rem;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(10, 10, 15, 0.4) 0%, rgba(10, 10, 15, 0.7) 50%, var(--bg-primary) 100%),
    linear-gradient(90deg, rgba(10, 10, 15, 0.9) 0%, transparent 40%);
}

.hero__canvas {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 3;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.125rem;
  background: rgba(124, 58, 237, 0.1);
  border: 1px solid rgba(124, 58, 237, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--violet-light);
  width: fit-content;
  animation: badgePulse 3s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.2); }
  50% { box-shadow: 0 0 1.5rem 0.25rem rgba(124, 58, 237, 0.15); }
}

.hero__badge-dot {
  width: 0.5rem;
  height: 0.5rem;
  background: var(--emerald);
  border-radius: 50%;
  animation: dotBlink 2s ease-in-out infinite;
}

@keyframes dotBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-top: 1rem;
}

.hero__title-accent {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 34rem;
  margin-top: 1rem;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.hero__stats {
  display: flex;
  gap: 3rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.hero__stat-value {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.hero__scroll span {
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.hero__scroll-line {
  width: 0.0625rem;
  height: 2.5rem;
  background: linear-gradient(180deg, var(--violet), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================
   TRUSTED BY (Logo Marquee)
   ============================================ */
.trusted {
  padding: 4rem 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}

.trusted__label {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
  margin-bottom: 2rem;
}

.trusted__track {
  display: flex;
  gap: 4rem;
  animation: marquee 30s linear infinite;
  width: max-content;
}

.trusted__logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-muted);
  opacity: 0.5;
  white-space: nowrap;
  transition: opacity var(--transition-base);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.trusted__logo:hover {
  opacity: 1;
  color: var(--text-secondary);
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================================
   FEATURES
   ============================================ */
.features {
  padding: var(--section-padding) 0;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: var(--transition-base);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-0.25rem);
  box-shadow: 0 1.5rem 3rem rgba(0, 0, 0, 0.3), 0 0 3rem rgba(124, 58, 237, 0.05);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card__icon {
  position: relative;
  z-index: 1;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.feature-card__icon--violet {
  background: rgba(124, 58, 237, 0.15);
}

.feature-card__icon--cyan {
  background: rgba(6, 182, 212, 0.15);
}

.feature-card__icon--emerald {
  background: rgba(16, 185, 129, 0.15);
}

.feature-card__icon--amber {
  background: rgba(245, 158, 11, 0.15);
}

.feature-card__icon--rose {
  background: rgba(244, 63, 94, 0.15);
}

.feature-card__icon--blue {
  background: rgba(59, 130, 246, 0.15);
}

.feature-card__title {
  position: relative;
  z-index: 1;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.625rem;
}

.feature-card__desc {
  position: relative;
  z-index: 1;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   COURSES
   ============================================ */
.courses {
  padding: var(--section-padding) 0;
  background: var(--bg-secondary);
}

.courses__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.course-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition-base);
}

.course-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-0.375rem);
  box-shadow: 0 1.5rem 3rem rgba(0, 0, 0, 0.4), 0 0 2rem rgba(124, 58, 237, 0.08);
}

.course-card__img-wrap {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.course-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.course-card:hover .course-card__img {
  transform: scale(1.05);
}

.course-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10, 10, 15, 0.8) 100%);
}

.course-card__tag {
  position: absolute;
  top: 0.875rem;
  left: 0.875rem;
  padding: 0.3125rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.course-card__tag--dev {
  background: rgba(124, 58, 237, 0.85);
  color: white;
}

.course-card__tag--design {
  background: rgba(244, 63, 94, 0.85);
  color: white;
}

.course-card__tag--data {
  background: rgba(6, 182, 212, 0.85);
  color: white;
}

.course-card__info {
  padding: 1.5rem;
}

.course-card__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.course-card__meta-item {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.course-card__meta-item svg {
  width: 0.875rem;
  height: 0.875rem;
}

.course-card__title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.course-card__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.course-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.course-card__price {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.course-card__rating {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.8125rem;
  color: var(--amber);
  font-weight: 600;
}

.course-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--violet-light);
  transition: var(--transition-fast);
}

.course-card__link svg {
  width: 1rem;
  height: 1rem;
  transition: transform var(--transition-base);
}

.course-card__link:hover {
  color: var(--cyan-light);
}

.course-card__link:hover svg {
  transform: translateX(0.25rem);
}

/* ============================================
   HOW IT WORKS
   ============================================ */
.how-it-works {
  padding: var(--section-padding) 0;
}

.how-it-works__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  position: relative;
}

.how-it-works__grid::before {
  content: '';
  position: absolute;
  top: 2.5rem;
  left: calc(16.67% + 1rem);
  right: calc(16.67% + 1rem);
  height: 0.125rem;
  background: linear-gradient(90deg, var(--violet), var(--cyan), var(--emerald));
  opacity: 0.3;
}

.step-card {
  text-align: center;
  position: relative;
}

.step-card__number {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.step-card__number--1 {
  background: rgba(124, 58, 237, 0.15);
  color: var(--violet-light);
  box-shadow: 0 0 2rem rgba(124, 58, 237, 0.2);
}

.step-card__number--2 {
  background: rgba(6, 182, 212, 0.15);
  color: var(--cyan-light);
  box-shadow: 0 0 2rem rgba(6, 182, 212, 0.2);
}

.step-card__number--3 {
  background: rgba(16, 185, 129, 0.15);
  color: #6EE7B7;
  box-shadow: 0 0 2rem rgba(16, 185, 129, 0.2);
}

.step-card__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.step-card__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 18rem;
  margin: 0 auto;
}

/* ============================================
   INSTRUCTORS
   ============================================ */
.instructors {
  padding: var(--section-padding) 0;
  background: var(--bg-secondary);
}

.instructors__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.instructor-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: var(--transition-base);
}

.instructor-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-0.25rem);
}

.instructor-card__avatar {
  width: 5rem;
  height: 5rem;
  border-radius: 50%;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
}

.instructor-card__avatar--1 { background: linear-gradient(135deg, #7C3AED, #A78BFA); }
.instructor-card__avatar--2 { background: linear-gradient(135deg, #06B6D4, #67E8F9); }
.instructor-card__avatar--3 { background: linear-gradient(135deg, #F43F5E, #FB7185); }
.instructor-card__avatar--4 { background: linear-gradient(135deg, #10B981, #6EE7B7); }

.instructor-card__name {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.instructor-card__role {
  font-size: 0.8125rem;
  color: var(--violet-light);
  font-weight: 500;
  margin-bottom: 0.625rem;
}

.instructor-card__desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonials {
  padding: var(--section-padding) 0;
}

.testimonials__slider {
  position: relative;
  overflow: hidden;
}

.testimonials__track {
  display: flex;
  transition: transform var(--transition-slow);
}

.testimonial-card {
  flex: 0 0 100%;
  padding: 0 1rem;
}

.testimonial-card__inner {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  max-width: 42rem;
  margin: 0 auto;
  position: relative;
}

.testimonial-card__quote {
  position: absolute;
  top: 1.5rem;
  right: 2rem;
  font-size: 4rem;
  font-family: var(--font-heading);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.2;
  line-height: 1;
}

.testimonial-card__text {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.testimonial-card__avatar {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  color: white;
}

.testimonial-card__name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9375rem;
}

.testimonial-card__role {
  color: var(--text-muted);
  font-size: 0.8125rem;
  margin-top: 0.125rem;
}

.testimonials__dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.testimonials__dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--text-muted);
  opacity: 0.4;
  transition: var(--transition-base);
}

.testimonials__dot.active {
  width: 2rem;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  opacity: 1;
}

/* ============================================
   PRICING
   ============================================ */
.pricing {
  padding: var(--section-padding) 0;
  background: var(--bg-secondary);
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  position: relative;
  transition: var(--transition-base);
}

.price-card:hover {
  transform: translateY(-0.25rem);
}

.price-card--popular {
  border-color: var(--violet);
  box-shadow: 0 0 3rem rgba(124, 58, 237, 0.15), 0 0 6rem rgba(124, 58, 237, 0.05);
  transform: scale(1.03);
}

.price-card--popular:hover {
  transform: scale(1.03) translateY(-0.25rem);
}

.price-card__badge {
  position: absolute;
  top: -0.75rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.3125rem 1rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
  white-space: nowrap;
}

.price-card__name {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.price-card__desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.price-card__price {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  margin-bottom: 2rem;
}

.price-card__currency {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-muted);
}

.price-card__amount {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price-card__period {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.price-card__features {
  margin-bottom: 2rem;
}

.price-card__feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.price-card__feature--inactive {
  color: var(--text-muted);
  opacity: 0.5;
}

.price-card__feature-check {
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 700;
  flex-shrink: 0;
}

.price-card__feature-check--active {
  background: rgba(16, 185, 129, 0.15);
  color: var(--emerald);
}

.price-card__feature-check--inactive {
  background: rgba(100, 116, 139, 0.15);
  color: var(--text-muted);
}

.price-card__btn {
  width: 100%;
  text-align: center;
}

/* ============================================
   CTA
   ============================================ */
.cta {
  padding: var(--section-padding) 0;
}

.cta__wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta__wrapper::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(124, 58, 237, 0.08), transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(6, 182, 212, 0.08), transparent 50%);
}

.cta__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.cta__subtitle {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 32rem;
  margin: 0 auto 2rem;
  position: relative;
  z-index: 1;
}

.cta__buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--border-subtle);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
}

.footer__logo-icon {
  width: 2rem;
  height: 2rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.footer__links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer__link {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--text-primary);
}

.footer__socials {
  display: flex;
  gap: 0.75rem;
}

.footer__social {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  border: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-base);
}

.footer__social svg {
  width: 1rem;
  height: 1rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer__social:hover {
  border-color: var(--border-accent);
  background: rgba(124, 58, 237, 0.1);
}

.footer__social:hover svg {
  color: var(--violet-light);
}

.footer__copy {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 64rem) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .courses__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .instructors__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing__grid {
    grid-template-columns: 1fr;
    max-width: 28rem;
    margin: 0 auto;
  }

  .price-card--popular {
    transform: none;
  }

  .price-card--popular:hover {
    transform: translateY(-0.25rem);
  }
}

@media (max-width: 48rem) {
  :root {
    --section-padding: 4rem;
  }

  .header__nav {
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 15, 0.97);
    backdrop-filter: blur(1rem);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transform: translateX(100%);
    transition: transform var(--transition-base);
  }

  .header__nav.open {
    transform: translateX(0);
  }

  .header__link {
    font-size: 1.25rem;
  }

  .header__link--cta {
    padding: 0.75rem 2rem;
    font-size: 1rem;
  }

  .header__burger {
    display: flex;
  }

  .features__grid {
    grid-template-columns: 1fr;
  }

  .courses__grid {
    grid-template-columns: 1fr;
  }

  .how-it-works__grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .how-it-works__grid::before {
    display: none;
  }

  .instructors__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__stats {
    gap: 1.5rem;
  }

  .hero__stat-value {
    font-size: 1.375rem;
  }

  .cta__wrapper {
    padding: 2.5rem 1.5rem;
  }
}

@media (max-width: 30rem) {
  .hero__stats {
    flex-direction: column;
    gap: 1rem;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .instructors__grid {
    grid-template-columns: 1fr;
  }

  .footer__links {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
}