/**
 * ===========================================
 * Zyntra IQ — Unique Redesign
 * ===========================================
 * 
 * Color Scheme: Emerald + Rose Gold on Deep Dark
 * Primary: #10B981 (Emerald)
 * Accent: #D4A574 (Rose Gold)
 * Background: #0B0F19 (Ink Black)
 * Text: #E6EAF0 (Misty White)
 * 
 * Font: "Sora" — Modern geometric sans-serif
 */

/* ===========================================
   CSS VARIABLES (Design Tokens)
   =========================================== */
:root {
  /* Colors - Emerald + Rose Gold */
  --color-primary: #10B981;
  --color-primary-light: #34D399;
  --color-primary-dark: #059669;
  --color-accent: #D4A574;
  --color-accent-light: #E8C9A8;
  --color-accent-dark: #B8895A;

  --color-bg: #0B0F19;
  --color-bg-lighter: #111827;
  --color-bg-card: rgba(17, 24, 39, 0.7);
  --color-bg-card-solid: #151D2E;
  --color-bg-card-hover: #1C2740;

  --color-text: #E6EAF0;
  --color-text-muted: #94A3B8;
  --color-text-dark: #64748B;

  --color-success: #10B981;
  --color-error: #F43F5E;
  --color-warning: #F59E0B;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  --gradient-hero: linear-gradient(160deg, #0B0F19 0%, #0F1D2F 30%, #13202E 60%, #0B0F19 100%);
  --gradient-card: linear-gradient(145deg, rgba(16, 185, 129, 0.08), rgba(212, 165, 116, 0.04));
  --gradient-section-alt: linear-gradient(180deg, #0B0F19 0%, #111827 100%);
  --gradient-glow: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, transparent 70%);

  /* Shadows */
  --shadow-soft: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(16, 185, 129, 0.2);
  --shadow-glow-accent: 0 0 30px rgba(212, 165, 116, 0.15);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 12px 48px rgba(16, 185, 129, 0.15);

  /* Glass */
  --glass-bg: rgba(17, 24, 39, 0.5);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-blur: blur(16px);

  /* Typography - Sora */
  --font-family: 'Sora', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  --spacing-4xl: 8rem;

  /* Border Radius — organic, modern */
  --radius-sm: 0.75rem;
  --radius-md: 1.25rem;
  --radius-lg: 1.75rem;
  --radius-xl: 2.5rem;
  --radius-full: 9999px;
  --radius-blob: 30% 70% 70% 30% / 30% 30% 70% 70%;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index layers */
  --z-header: 100;
  --z-modal: 200;
  --z-cookie: 150;
}

/* ===========================================
   RESET & BASE STYLES
   =========================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul,
ol {
  list-style: none;
}

/* ===========================================
   CONTAINER
   =========================================== */
.container {
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
}

/* ===========================================
   TYPOGRAPHY
   =========================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.25rem, 5.5vw, 4rem);
}

h2 {
  font-size: clamp(1.85rem, 4.5vw, 3rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

/* ===========================================
   BUTTONS
   =========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.9rem 2.2rem;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  text-transform: none;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::before {
  opacity: 1;
}

.btn--primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

.btn--primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 36px rgba(16, 185, 129, 0.45);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 2px solid rgba(16, 185, 129, 0.4);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  background: rgba(16, 185, 129, 0.08);
  transform: translateY(-2px);
}

.btn--small {
  padding: 0.6rem 1.4rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn--large {
  padding: 1.1rem 2.8rem;
  font-size: 1.1rem;
  border-radius: var(--radius-lg);
}

.btn--full {
  width: 100%;
}

/* Button Spinner */
.btn__spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.btn--loading .btn__text {
  opacity: 0;
}

.btn--loading .btn__spinner {
  display: block;
  position: absolute;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Link Button */
.link-btn {
  color: var(--color-primary-light);
  text-decoration: underline;
  text-underline-offset: 3px;
  background: none;
  border: none;
  font-size: inherit;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.link-btn:hover {
  color: var(--color-accent);
}

/* ===========================================
   HEADER & NAVIGATION
   =========================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background: rgba(11, 15, 25, 0.75);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--transition-normal);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Logo — Diamond/Prism */
.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.3rem;
  text-decoration: none;
}

.logo__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  position: relative;
  transform: rotate(-5deg);
  transition: transform var(--transition-spring);
}

.logo:hover .logo__icon {
  transform: rotate(0deg) scale(1.08);
}

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

/* Navigation */
.nav {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(11, 15, 25, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--spacing-xl) var(--spacing-lg);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  z-index: var(--z-header);
}

.nav.active {
  transform: translateX(0);
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.nav__link {
  font-size: 1.2rem;
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: var(--spacing-md);
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.nav__link:hover {
  color: var(--color-primary-light);
}

.nav__link:hover::after {
  width: calc(100% - var(--spacing-md) * 2);
}

@media (min-width: 1024px) {
  .nav {
    position: static;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    padding: 0;
    transform: none;
  }

  .nav__list {
    flex-direction: row;
    gap: var(--spacing-sm);
  }

  .nav__link {
    font-size: 0.95rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .nav__link::after {
    left: var(--spacing-sm);
  }

  .nav__link:hover::after {
    width: calc(100% - var(--spacing-sm) * 2);
  }
}

/* Burger Menu */
.burger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-xs);
  z-index: calc(var(--z-header) + 1);
}

.burger__line {
  width: 26px;
  height: 2.5px;
  background: var(--color-primary-light);
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  transform-origin: center;
}

.burger.active .burger__line:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.burger.active .burger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.burger.active .burger__line:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

@media (min-width: 1024px) {
  .burger {
    display: none;
  }
}

/* ===========================================
   HERO SECTION — Diagonal + Floating Elements
   =========================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(72px + var(--spacing-2xl)) 0 var(--spacing-4xl);
  background: var(--gradient-hero);
  overflow: hidden;
}

/* Decorative blobs */
.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -150px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, transparent 65%);
  border-radius: var(--radius-blob);
  animation: blobFloat 12s ease-in-out infinite;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -100px;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(212, 165, 116, 0.08) 0%, transparent 60%);
  border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%;
  animation: blobFloat 15s ease-in-out infinite reverse;
  pointer-events: none;
}

@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 15px) scale(0.95); }
}

.hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    linear-gradient(180deg, transparent 60%, var(--color-bg) 100%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 80px,
      rgba(16, 185, 129, 0.02) 80px,
      rgba(16, 185, 129, 0.02) 81px
    );
  pointer-events: none;
}

.hero__container {
  position: relative;
  display: grid;
  gap: var(--spacing-2xl);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero__container {
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--spacing-3xl);
  }
}

.hero__content {
  text-align: center;
}

@media (min-width: 1024px) {
  .hero__content {
    text-align: left;
  }
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary-light);
  margin-bottom: var(--spacing-lg);
  backdrop-filter: blur(8px);
  animation: badgePulse 3s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.2); }
  50% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
}

.hero__title {
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, #ffffff 0%, var(--color-primary-light) 50%, var(--color-accent) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmerText 5s ease-in-out infinite;
}

@keyframes shimmerText {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  max-width: 560px;
  line-height: 1.8;
}

@media (min-width: 1024px) {
  .hero__subtitle {
    margin-left: 0;
  }
}

.hero__note {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  background: rgba(212, 165, 116, 0.1);
  border: 1px solid rgba(212, 165, 116, 0.2);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-accent-light);
  margin-bottom: var(--spacing-lg);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
}

@media (min-width: 1024px) {
  .hero__actions {
    justify-content: flex-start;
  }
}

/* Hero Code Block — Trapezoid card */
.hero__visual {
  display: flex;
  justify-content: center;
  perspective: 1000px;
}

.hero__code-block {
  background: var(--color-bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  padding: 0;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--glass-border);
  max-width: 420px;
  width: 100%;
  transform: rotateY(-3deg) rotateX(2deg);
  transition: transform var(--transition-slow);
}

.hero__code-block:hover {
  transform: rotateY(0deg) rotateX(0deg) scale(1.02);
  box-shadow: var(--shadow-card-hover);
}

.code-header {
  display: flex;
  gap: 8px;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(0, 0, 0, 0.4);
  border-bottom: 1px solid var(--glass-border);
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.code-dot--red {
  background: #F43F5E;
}

.code-dot--yellow {
  background: #F59E0B;
}

.code-dot--green {
  background: #10B981;
}

.code-content {
  padding: var(--spacing-md) var(--spacing-lg);
  font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 0.85rem;
  line-height: 2;
  color: var(--color-text-muted);
  overflow-x: auto;
}

.code-keyword {
  color: #F472B6;
}

.code-var {
  color: #34D399;
}

.code-prop {
  color: #67E8F9;
}

.code-string {
  color: #D4A574;
}

.code-method {
  color: #A78BFA;
}

.code-comment {
  color: #4B5563;
}

/* ===========================================
   SECTION COMMON STYLES — Diagonal dividers
   =========================================== */
section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  position: relative;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 1.2rem;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.section-title {
  margin-bottom: var(--spacing-sm);
  position: relative;
}

/* Accent underline decoration */
.section-header .section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  margin: var(--spacing-sm) auto 0;
}

.section-subtitle {
  color: var(--color-text-muted);
  max-width: 620px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ===========================================
   ABOUT / FEATURES — Orbital layout
   =========================================== */
.about {
  background: var(--color-bg-lighter);
  position: relative;
  overflow: hidden;
}

/* Diagonal cut top */
.about::before {
  content: '';
  position: absolute;
  top: -40px;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--color-bg);
  clip-path: polygon(0 0, 100% 0, 100% 30%, 0 100%);
}

/* Diagonal cut bottom */
.about::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--color-bg);
  clip-path: polygon(0 70%, 100% 0, 100% 100%, 0 100%);
  z-index: 1;
}

.features-grid {
  display: grid;
  gap: var(--spacing-md);
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
  }
}

.feature-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
  border: 1px solid var(--glass-border);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

/* Decorative corner accent */
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  opacity: 0.06;
  border-radius: 0 0 100% 0;
  transition: all var(--transition-normal);
}

.feature-card:hover {
  background: var(--color-bg-card-hover);
  border-color: rgba(16, 185, 129, 0.2);
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
}

.feature-card:hover::before {
  width: 100px;
  height: 100px;
  opacity: 0.1;
}

.feature-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: 50%;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary-light);
  transition: all var(--transition-normal);
}

.feature-card:hover .feature-card__icon {
  background: rgba(16, 185, 129, 0.15);
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 0 24px rgba(16, 185, 129, 0.15);
}

.feature-card__title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.feature-card__text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ===========================================
   COURSES SECTION — Staggered Cards
   =========================================== */
.courses {
  background: var(--color-bg);
  padding-top: var(--spacing-4xl);
}

.courses-grid {
  display: grid;
  gap: var(--spacing-lg);
}

@media (min-width: 640px) {
  .courses-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .courses-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }

  /* Stagger odd cards down */
  .course-card:nth-child(odd) {
    transform: translateY(30px);
  }

  .course-card--featured {
    grid-row: span 2;
    transform: translateY(0) !important;
  }
}

.course-card {
  background: var(--color-bg-card-solid);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  transition: all var(--transition-normal);
  position: relative;
}

.course-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.course-card:hover {
  border-color: rgba(16, 185, 129, 0.2);
  transform: translateY(-5px) !important;
  box-shadow: var(--shadow-card-hover);
}

.course-card:hover::after {
  transform: scaleX(1);
}

.course-card__image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.course-card--featured .course-card__image {
  height: 260px;
}

@media (min-width: 1024px) {
  .course-card--featured .course-card__image {
    height: 100%;
    min-height: 320px;
  }

  .course-card--featured {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
}

.course-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  filter: brightness(0.85) saturate(1.1);
}

.course-card:hover .course-card__image img {
  transform: scale(1.08);
  filter: brightness(0.95) saturate(1.2);
}

.course-card__badge {
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  padding: 0.35rem 0.9rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.course-card__content {
  padding: var(--spacing-lg);
}

.course-card__title {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xs);
  font-weight: 700;
}

.course-card__text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
}

.course-card__meta {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.8rem;
  color: var(--color-text-dark);
  margin-bottom: var(--spacing-md);
}

/* ===========================================
   REVIEWS SECTION — Tilted cards
   =========================================== */
.reviews {
  background: var(--color-bg-lighter);
  position: relative;
  overflow: hidden;
}

/* Diagonal cut top */
.reviews::before {
  content: '';
  position: absolute;
  top: -40px;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--color-bg);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 30%);
}

.reviews-grid {
  display: grid;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .reviews-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
  }
}

.review-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-normal);
  position: relative;
}

/* Quote decoration */
.review-card::before {
  content: '"';
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-md);
  font-size: 4rem;
  font-weight: 800;
  color: rgba(16, 185, 129, 0.06);
  line-height: 1;
  font-family: Georgia, serif;
}

.review-card:hover {
  border-color: rgba(212, 165, 116, 0.25);
  box-shadow: var(--shadow-glow-accent);
  transform: translateY(-6px);
}

.review-card__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.review-card__avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-primary);
  padding: 2px;
  background: var(--gradient-primary);
}

.review-card__name {
  font-size: 1rem;
  font-weight: 600;
}

.review-card__role {
  font-size: 0.8rem;
  color: var(--color-accent);
}

.review-card__stars {
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
  letter-spacing: 3px;
  font-size: 1.1rem;
}

.review-card__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-style: italic;
  line-height: 1.8;
}

/* ===========================================
   CTA SECTION — Glass panel
   =========================================== */
.cta-section {
  padding: var(--spacing-4xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-content {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-2xl);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  position: relative;
}

.cta-content .section-title {
  margin-bottom: var(--spacing-xs);
}

.cta-content .section-title::after {
  display: none;
}

/* ===========================================
   CONTACTS SECTION
   =========================================== */
.contacts {
  background: var(--color-bg);
}

.contacts__wrapper {
  display: grid;
  gap: var(--spacing-2xl);
}

@media (min-width: 1024px) {
  .contacts__wrapper {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.contacts__info .section-title {
  text-align: left;
}

.contacts__info .section-title::after {
  margin: var(--spacing-sm) 0 0;
}

.contacts__info .section-subtitle {
  text-align: left;
  margin: 0 0 var(--spacing-lg);
}

.contacts__details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-item {
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-start;
}

.contact-item__icon {
  font-size: 1.5rem;
}

.contact-item strong {
  display: block;
  margin-bottom: 2px;
  color: var(--color-text);
}

.contact-item p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Contact Form */
.contact-form {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  border: 1px solid var(--glass-border);
}

.contact-form__title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.form-input {
  width: 100%;
  padding: 0.9rem var(--spacing-md);
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(16, 185, 129, 0.12);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-family);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-input::placeholder {
  color: var(--color-text-dark);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.12);
}

.form-input:invalid:not(:placeholder-shown) {
  border-color: var(--color-error);
}

.form-input--small {
  max-width: 150px;
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-hint {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-dark);
  margin-top: 4px;
}

.form-error {
  display: block;
  font-size: 0.8rem;
  color: var(--color-error);
  margin-top: 4px;
  min-height: 1.2em;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-primary);
}

.form-checkbox label {
  flex: 1;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.captcha-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-sm);
}

.captcha-group .form-label {
  margin-bottom: 0;
}

/* Form Status Messages */
.form-status {
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
  text-align: center;
  display: none;
}

.form-status--error {
  display: block;
  background: rgba(244, 63, 94, 0.08);
  border: 1px solid var(--color-error);
  color: var(--color-error);
}

.form-status--success {
  display: block;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid var(--color-success);
  color: var(--color-success);
}

/* ===========================================
   FOOTER — Modern asymmetric
   =========================================== */
.footer {
  background: var(--color-bg-lighter);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  border-top: 1px solid var(--glass-border);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 1px;
  background: var(--gradient-primary);
}

.footer__grid {
  display: grid;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 640px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer__logo {
  margin-bottom: var(--spacing-sm);
}

.footer__tagline {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  max-width: 300px;
  line-height: 1.8;
}

.footer__title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer__link,
.footer__link-btn {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  text-align: left;
  position: relative;
}

.footer__link:hover,
.footer__link-btn:hover {
  color: var(--color-primary-light);
  padding-left: 6px;
}

.footer__contacts li {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.contact-icon {
  width: 18px;
  height: 18px;
  stroke: var(--color-primary);
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.footer__bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--glass-border);
  text-align: center;
}

.footer__bottom p {
  font-size: 0.8rem;
  color: var(--color-text-dark);
}

/* ===========================================
   MODAL WINDOWS
   =========================================== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.modal__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
}

.modal__content {
  position: relative;
  background: var(--color-bg-card-solid);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  max-width: 620px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  border: 1px solid var(--glass-border);
  transform: translateY(20px) scale(0.98);
  transition: transform var(--transition-normal);
}

.modal[aria-hidden="false"] .modal__content {
  transform: translateY(0) scale(1);
}

.modal__close {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.modal__close:hover {
  color: var(--color-error);
  background: rgba(244, 63, 94, 0.15);
}

.modal__title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  padding-right: var(--spacing-xl);
}

.modal__body {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.8;
}

.modal__body h3 {
  font-size: 1.1rem;
  color: var(--color-text);
  margin: var(--spacing-md) 0 var(--spacing-xs);
}

.modal__body ul {
  list-style: disc;
  padding-left: var(--spacing-md);
  margin: var(--spacing-sm) 0;
}

.modal__body li {
  margin-bottom: var(--spacing-xs);
}

/* ===========================================
   COOKIE POPUP
   =========================================== */
.cookie-popup {
  position: fixed;
  bottom: var(--spacing-md);
  left: var(--spacing-md);
  right: var(--spacing-md);
  z-index: var(--z-cookie);
  max-width: 440px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-normal);
}

.cookie-popup[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.cookie-popup__content {
  background: var(--color-bg-card-solid);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--glass-border);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}

.cookie-popup__title {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-xs);
}

.cookie-popup__text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.cookie-popup__actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* ===========================================
   UTILITIES & ACCESSIBILITY
   =========================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus Visible */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Body scroll lock */
body.no-scroll {
  overflow: hidden;
}

/* ===========================================
   AOS CUSTOM ANIMATIONS
   =========================================== */
[data-aos] {
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===========================================
   LEGAL PAGES
   =========================================== */
.page-content {
  padding: 120px 0 60px;
  min-height: 60vh;
}

.page-content h1 {
  margin-bottom: 40px;
  font-size: 2.5rem;
  text-align: center;
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.content-body {
  max-width: 900px;
  margin: 0 auto;
  color: var(--color-text-muted);
}

.content-body h3,
.content-body h4 {
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.content-body p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

.content-body ul {
  margin-bottom: 1.5rem;
  padding-left: 20px;
  list-style: disc;
}

.content-body li {
  margin-bottom: 0.5rem;
  padding-left: 0.5rem;
}

.content-body li::marker {
  color: var(--color-primary);
}

/* ===========================================
   CUSTOM SCROLLBAR
   =========================================== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(16, 185, 129, 0.5);
}

/* ===========================================
   SELECTION
   =========================================== */
::selection {
  background: rgba(16, 185, 129, 0.25);
  color: #fff;
}