/* =============================================
   VS DESIGN — Production CSS
   Aesthetic: Industrial Precision / Engineering
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,300&family=JetBrains+Mono:wght@400;500&display=swap');

/* ─── CSS Variables — Dark Mode (default) ─── */
:root {
  --black:    #080A0C;
  --dark:     #0E1117;
  --surface:  #141820;
  --border:   #1E2530;
  --muted:    #3A4455;
  --text-dim: #7A8799;
  --text:     #C8D4E0;
  --white:    #EDF2F7;
  --accent:   #00AACC;
  --accent2:  #FF6B35;
  --gold:     #F5C518;
  --gradient: linear-gradient(135deg, #00E5FF 0%, #0094FF 100%);
  --font-display: 'Bebas Neue', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
  --radius:   4px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  /* Header bg (used inline for glass effect) */
  --header-bg: rgba(8, 10, 12, 0.92);
}

/* ─── Light Mode Variables ─── */
[data-theme="light"] {
  --black:    #F0F4F8;
  --dark:     #E2E8F0;
  --surface:  #FFFFFF;
  --border:   #CBD5E1;
  --muted:    #94A3B8;
  --text-dim: #64748B;
  --text:     #334155;
  --white:    #0F172A;
  --accent:   #0284C7;
  --accent2:  #EA580C;
  --gold:     #D97706;
  --gradient: linear-gradient(135deg, #0284C7 0%, #0EA5E9 100%);
  --header-bg: rgba(240, 244, 248, 0.92);
}

[data-theme="light"] header {
  background: var(--header-bg) !important;
  border-bottom-color: var(--border);
}

[data-theme="light"] .hero-bg {
  background:
    radial-gradient(ellipse 80% 60% at 60% 50%, rgba(2,132,199,0.07) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 80% 20%, rgba(14,165,233,0.05) 0%, transparent 60%),
    var(--black);
}

[data-theme="light"] .hero-grid {
  opacity: 0.2;
}

[data-theme="light"] .btn-outline {
  color: var(--text);
  border-color: var(--border);
}

[data-theme="light"] .btn-outline:hover {
  color: var(--accent);
  border-color: var(--accent);
}

[data-theme="light"] .btn-primary:hover {
  background: var(--white);
  color: var(--surface);
}

[data-theme="light"] .iso-card {
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}

[data-theme="light"] .team-placeholder {
  background: linear-gradient(135deg, #E2E8F0, #CBD5E1);
  color: #94A3B8;
}

[data-theme="light"] .review-card {
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

[data-theme="light"] .course-card:hover,
[data-theme="light"] .team-card:hover,
[data-theme="light"] .feature-item:hover {
  box-shadow: 0 12px 40px rgba(2,132,199,0.12);
}

[data-theme="light"] .form-group input,
[data-theme="light"] .form-group textarea,
[data-theme="light"] .form-group select {
  background: var(--dark);
  color: var(--white);
}

[data-theme="light"] .form-group input::placeholder,
[data-theme="light"] .form-group textarea::placeholder {
  color: var(--muted);
}

[data-theme="light"] .form-group select option {
  background: var(--dark);
  color: var(--white);
}

[data-theme="light"] nav.open ul {
  background: var(--dark);
}

[data-theme="light"] .nav-cta {
  color: #fff !important;
}

/* ─── Theme Toggle Button ─── */
.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 8px;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: rotate(20deg);
}

/* Sun icon visible in dark mode, Moon in light */
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }

[data-theme="light"] .theme-toggle .icon-sun  { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

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

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ─── Utility ─── */
.container {
  width: 92%;
  max-width: 1200px;
  margin: 0 auto;
}

.accent { color: var(--accent); }
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 3px 10px;
  border-radius: 2px;
  margin-bottom: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--black);
}
.btn-primary:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,229,255,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  color: var(--white);
  line-height: 1.05;
  letter-spacing: 0.02em;
}

.section-desc {
  color: var(--text-dim);
  font-size: 15px;
  max-width: 560px;
  line-height: 1.7;
}

/* ─── Header / Nav ─── */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 36px;
  height: 36px;
  background: var(--gradient);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--black);
  letter-spacing: 0;
  flex-shrink: 0;
}

.logo-img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  object-fit: cover;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--white);
  letter-spacing: 0.08em;
  line-height: 1;
}

.logo-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  display: block;
  margin-top: 2px;
}

nav ul {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 6px;
}

nav ul li a {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dim);
  padding: 7px 14px;
  border-radius: var(--radius);
  transition: var(--transition);
  letter-spacing: 0.03em;
}

nav ul li a:hover,
nav ul li a.active {
  color: var(--white);
  background: var(--surface);
}

nav ul li a.active {
  color: var(--accent);
}

.nav-cta {
  background: var(--accent) !important;
  color: var(--black) !important;
  font-weight: 600 !important;
}

.nav-cta:hover {
  background: #fff !important;
}

/* ─── Hamburger ─── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  width: 22px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
  display: block;
}

/* ─── Hero ─── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 68px;
  overflow: hidden;
}

/* Two-column hero layout */
.hero-layout {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 60px;
  align-items: center;
  width: 92%;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 50%, rgba(0,148,255,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 80% 20%, rgba(0,229,255,0.06) 0%, transparent 60%),
    var(--black);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.4;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

/* ─── Hero Logo Panel (right side) ─── */
.hero-logo-panel {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeUp 0.8s 0.35s ease both;
}

/* Decorative rotating rings */
.hero-logo-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0,229,255,0.12);
  animation: spinRing 18s linear infinite;
  pointer-events: none;
}

.hero-logo-ring--outer {
  width: 380px;
  height: 380px;
  border-style: dashed;
  border-color: rgba(0,229,255,0.08);
  animation-duration: 28s;
}

.hero-logo-ring--mid {
  width: 300px;
  height: 300px;
  border-color: rgba(0,229,255,0.14);
  animation-direction: reverse;
  animation-duration: 20s;
}

@keyframes spinRing {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* Main card holding the logo */
.hero-logo-card {
  width: 240px;
  height: 240px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  position: relative;
  box-shadow:
    0 0 0 1px rgba(0,229,255,0.08),
    0 24px 60px rgba(0,0,0,0.4),
    0 0 80px rgba(0,229,255,0.06);
  transition: var(--transition);
  overflow: visible;
}

.hero-logo-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 24px;
  background: var(--gradient);
  z-index: -1;
  opacity: 0.2;
}

.hero-logo-card:hover {
  transform: translateY(-6px);
  box-shadow:
    0 0 0 1px rgba(0,229,255,0.2),
    0 32px 80px rgba(0,0,0,0.5),
    0 0 100px rgba(0,229,255,0.1);
}

/* Actual logo image inside the card */
.hero-logo-img {
  width: 160px;
  height: 160px;
  object-fit: contain;
  border-radius: 12px;
}

/* Fallback initials if image missing */
.hero-logo-fallback {
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.hero-logo-initials {
  font-family: var(--font-display);
  font-size: 5rem;
  line-height: 1;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-logo-name {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--text-dim);
  text-transform: uppercase;
}

/* ISO badge pinned to bottom of card */
.hero-logo-badge {
  position: absolute;
  bottom: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--dark);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 5px 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.1em;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

/* Floating discipline chips */
.hero-chip {
  position: absolute;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  animation: floatChip 3s ease-in-out infinite;
}

.hero-chip--1 {
  top: 12px;
  right: -20px;
  animation-delay: 0s;
}

.hero-chip--2 {
  bottom: 48px;
  right: -28px;
  animation-delay: 1s;
}

.hero-chip--3 {
  top: 50%;
  left: -36px;
  transform: translateY(-50%);
  animation-delay: 0.5s;
}

@keyframes floatChip {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-7px); }
}

.hero-chip--3 {
  animation-name: floatChipLeft;
}

@keyframes floatChipLeft {
  0%, 100% { transform: translateY(-50%) translateX(0); }
  50%       { transform: translateY(-50%) translateX(-5px); }
}

/* Light mode adjustments for logo panel */
[data-theme="light"] .hero-logo-card {
  box-shadow:
    0 0 0 1px rgba(2,132,199,0.15),
    0 20px 50px rgba(0,0,0,0.12),
    0 0 60px rgba(2,132,199,0.08);
}

[data-theme="light"] .hero-logo-ring--outer {
  border-color: rgba(2,132,199,0.1);
}

[data-theme="light"] .hero-logo-ring--mid {
  border-color: rgba(2,132,199,0.15);
}

[data-theme="light"] .hero-logo-badge {
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

[data-theme="light"] .hero-chip {
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  animation: fadeUp 0.7s ease both;
}

.eyebrow-badge {
  background: rgba(0,229,255,0.1);
  border: 1px solid rgba(0,229,255,0.25);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 2px;
}

.eyebrow-line {
  width: 40px; height: 1px;
  background: var(--muted);
}

.eyebrow-text {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 7rem);
  color: var(--white);
  line-height: 0.95;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
  animation: fadeUp 0.7s 0.1s ease both;
}

.hero h1 .line2 {
  color: var(--accent);
  display: block;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 500px;
  margin-bottom: 40px;
  animation: fadeUp 0.7s 0.2s ease both;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  animation: fadeUp 0.7s 0.3s ease both;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
  animation: fadeUp 0.7s 0.4s ease both;
  flex-wrap: wrap;
}

.stat-item {}

.stat-num {
  font-family: var(--font-display);
  font-size: 2.8rem;
  color: var(--white);
  line-height: 1;
  letter-spacing: 0.02em;
}

.stat-num span {
  color: var(--accent);
}

.stat-label {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 4px;
  font-family: var(--font-mono);
}

/* ─── About / Why Strip ─── */
.why-section {
  padding: 100px 0;
  background: var(--dark);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.why-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}

.feature-item {
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.feature-item:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.feature-icon {
  width: 38px;
  height: 38px;
  background: rgba(0,229,255,0.08);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-size: 18px;
}

.feature-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 6px;
}

.feature-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.5;
}

.why-visual {
  position: relative;
}

.iso-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.iso-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient);
}

.iso-badge {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: rgba(0,229,255,0.06);
  border: 2px solid rgba(0,229,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 36px;
}

.iso-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--white);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.iso-subtitle {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ─── Courses ─── */
.courses-section {
  padding: 100px 0;
}

.section-header {
  margin-bottom: 60px;
}

.section-header .section-desc {
  margin-top: 16px;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.course-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.course-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,229,255,0.08);
}

.course-card-top {
  padding: 28px 28px 0;
}

.course-level {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 2px;
  display: inline-block;
  margin-bottom: 18px;
}

.level-beginner { background: rgba(0,229,255,0.1); color: var(--accent); }
.level-advanced { background: rgba(255,107,53,0.1); color: var(--accent2); }
.level-pro      { background: rgba(245,197,24,0.1); color: var(--gold); }

.course-card h3 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  color: var(--white);
  letter-spacing: 0.03em;
  margin-bottom: 12px;
  line-height: 1.1;
}

.course-card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.65;
}

.course-topics {
  list-style: none;
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.course-topics li {
  font-size: 13px;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 8px;
}

.course-topics li::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  opacity: 0.7;
}

.course-card-bottom {
  padding: 24px 28px 28px;
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  margin-top: 24px;
}

.course-duration {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

.course-arrow {
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-dim);
  transition: var(--transition);
}

.course-card:hover .course-arrow {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--black);
}

/* ─── Reviews ─── */
.reviews-section {
  padding: 100px 0;
  background: var(--dark);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.reviews-wrapper {
  position: relative;
  margin-top: 50px;
}

.review-track {
  overflow: hidden;
}

.review {
  display: none;
}

.review.active {
  display: block;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.review-card {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
  padding: 50px 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  position: relative;
}

.review-card::before {
  content: '\201C';
  font-family: var(--font-display);
  font-size: 8rem;
  color: var(--accent);
  opacity: 0.15;
  position: absolute;
  top: -10px;
  left: 30px;
  line-height: 1;
}

.review-stars {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin-bottom: 22px;
  font-size: 14px;
  color: var(--gold);
}

.review-text {
  font-size: 18px;
  color: var(--text);
  font-style: italic;
  line-height: 1.7;
  margin-bottom: 28px;
  font-weight: 300;
}

.review-author {
  font-weight: 600;
  color: var(--white);
  font-size: 15px;
}

.review-role {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 4px;
}

.review-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
}

.review-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--muted);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  padding: 0;
}

.review-dot.active {
  background: var(--accent);
  width: 20px;
  border-radius: 3px;
}

/* ─── Team ─── */
.team-section {
  padding: 100px 0;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  margin-top: 60px;
}

.team-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition);
}

.team-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 16px 50px rgba(0,229,255,0.07);
}

.team-img-wrap {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--dark);
}

.team-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%);
  transition: var(--transition);
}

.team-card:hover .team-img-wrap img {
  filter: grayscale(0%);
  transform: scale(1.03);
}

.team-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--muted);
  background: linear-gradient(135deg, var(--surface), var(--dark));
}

.team-info {
  padding: 24px;
}

.team-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 5px;
}

.team-role {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.team-exp {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 10px;
}

/* ─── Contact ─── */
.contact-section {
  padding: 100px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 {
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: var(--white);
  margin-bottom: 16px;
  line-height: 1.05;
}

.contact-info p {
  color: var(--text-dim);
  font-size: 15px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

.contact-icon {
  width: 42px;
  height: 42px;
  background: rgba(0,229,255,0.08);
  border: 1px solid rgba(0,229,255,0.15);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.contact-item-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 3px;
}

.contact-item-value {
  font-size: 14px;
  color: var(--white);
}

.contact-form-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.contact-form-wrap::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 16px;
}

.form-group label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.form-group input,
.form-group textarea,
.form-group select {
  background: var(--dark);
  border: 1px solid var(--border);
  color: var(--white);
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 14px;
  border-radius: var(--radius);
  transition: var(--transition);
  outline: none;
  width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--muted);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,229,255,0.08);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group select option {
  background: var(--dark);
}

#formMessage {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.08em;
}

/* ─── Page Header ─── */
.page-header {
  padding-top: calc(68px + 60px);
  padding-bottom: 60px;
  background: var(--dark);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.page-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.page-header-inner {
  position: relative;
  z-index: 2;
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  color: var(--white);
  letter-spacing: 0.04em;
  margin-top: 12px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.breadcrumb a { color: var(--text-dim); transition: var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { color: var(--muted); }
.breadcrumb-current { color: var(--accent); }

/* ─── Footer ─── */
footer {
  background: var(--dark);
  border-top: 1px solid var(--border);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 50px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 30px;
}

.footer-brand .logo {
  margin-bottom: 18px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.65;
  max-width: 280px;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-dim);
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.footer-iso {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  background: rgba(0,229,255,0.06);
  border: 1px solid rgba(0,229,255,0.15);
  padding: 4px 12px;
  border-radius: 2px;
  letter-spacing: 0.1em;
}

/* ─── Course Tabs ─── */
.course-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.course-tab {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  padding: 14px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  min-width: 140px;
  flex: 1;
  text-align: left;
}

.course-tab:hover {
  border-color: var(--muted);
  transform: translateY(-2px);
}

.course-tab.active {
  border-color: var(--accent);
  background: rgba(0,229,255,0.04);
  box-shadow: 0 4px 20px rgba(0,229,255,0.07);
}

.tab-icon { font-size: 20px; margin-bottom: 4px; }

.tab-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--white);
  letter-spacing: 0.04em;
  line-height: 1;
}

.course-tab.active .tab-name { color: var(--accent); }

.tab-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ─── Course Panels ─── */
.course-panels { position: relative; }

.course-panel {
  display: none;
  animation: panelIn 0.35s ease both;
}

.course-panel.active { display: block; }

@keyframes panelIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.course-panel-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 48px;
  position: relative;
  overflow: hidden;
}

.course-panel-layout::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient);
}

.course-panel-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 3px;
  margin-bottom: 18px;
}

.course-panel-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  color: var(--white);
  letter-spacing: 0.03em;
  line-height: 1;
  margin-bottom: 18px;
}

.course-panel-desc {
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.75;
  max-width: 540px;
  margin-bottom: 32px;
}

.course-panel-topics h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 14px;
}

.course-panel-topics ul {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 24px;
}

.course-panel-topics ul li {
  font-size: 14px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.topic-bullet {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* Meta info card (right side) */
.course-meta-card {
  background: var(--dark);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.course-meta-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.meta-icon { font-size: 18px; flex-shrink: 0; margin-top: 1px; }

.course-meta-item div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.meta-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.meta-val {
  font-size: 13.5px;
  color: var(--white);
  font-weight: 500;
}

.course-meta-divider {
  height: 1px;
  background: var(--border);
  margin: 2px 0;
}

/* ─── What You'll Learn ─── */
.learn-section {
  padding: 80px 0 20px;
  background: var(--dark);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.learn-header { margin-bottom: 48px; }

.learn-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.learn-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 36px;
  transition: var(--transition);
}

.learn-card:hover { border-color: var(--muted); }

.learn-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.learn-card-icon { font-size: 26px; }

.learn-card-header h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--white);
  letter-spacing: 0.03em;
  line-height: 1.1;
}

/* Skills grid */
.learn-skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.learn-skill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--dark);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: var(--transition);
}

.learn-skill:hover {
  border-color: var(--accent);
  background: rgba(0,229,255,0.03);
}

.learn-skill span {
  font-size: 13px;
  color: var(--text);
  font-weight: 500;
}

.learn-skill::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* Benefits list */
.learn-benefits {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.learn-benefit-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.benefit-num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--accent);
  opacity: 0.4;
  line-height: 1;
  flex-shrink: 0;
  width: 32px;
}

.learn-benefit-item strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 3px;
}

.learn-benefit-item p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.55;
}

/* CTA Strip */
.courses-cta-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding: 50px 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}

/* Light mode adjustments */
[data-theme="light"] .course-tab.active {
  background: rgba(2,132,199,0.05);
  box-shadow: 0 4px 16px rgba(2,132,199,0.08);
}

[data-theme="light"] .learn-skill:hover {
  background: rgba(2,132,199,0.04);
}


.about-section {
  padding: 100px 0;
  background: var(--black);
}

.about-header {
  max-width: 640px;
  margin-bottom: 56px;
}

/* ─── Pricing Grid ─── */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 780px;
  margin: 0 auto 60px;
}

.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: relative;
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-4px);
  border-color: var(--muted);
}

.pricing-card--featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(0,229,255,0.1), 0 20px 60px rgba(0,229,255,0.07);
}

.pricing-card--featured:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(0,229,255,0.2), 0 28px 70px rgba(0,229,255,0.1);
}

.pricing-popular-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--black);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 20px;
  white-space: nowrap;
}

.pricing-mode-icon {
  font-size: 28px;
  margin-bottom: 4px;
}

.pricing-mode {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.pricing-amount {
  font-family: var(--font-display);
  font-size: 3.2rem;
  color: var(--white);
  line-height: 1;
  letter-spacing: 0.02em;
}

.pricing-currency {
  font-size: 1.8rem;
  vertical-align: top;
  margin-top: 6px;
  display: inline-block;
  color: var(--accent);
}

.pricing-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.65;
  margin-top: 10px;
}

.pricing-perks {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 4px;
  border-top: 1px solid var(--border);
}

.pricing-perks li {
  font-size: 13.5px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.perk-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ─── About Details Grid ─── */
.about-details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}

.about-detail-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 30px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.about-detail-card:hover {
  border-color: var(--muted);
  transform: translateY(-3px);
}

.detail-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.detail-card-icon {
  font-size: 22px;
}

.detail-card-header h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--white);
  letter-spacing: 0.03em;
}

/* Detail list (Course Details card) */
.detail-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.detail-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.detail-icon {
  font-size: 16px;
  flex-shrink: 0;
  margin-top: 1px;
}

.detail-list li div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.detail-list li strong {
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
}

.detail-list li span {
  font-size: 12px;
  color: var(--text-dim);
}

/* Detail paragraphs (What Makes Us Different) */
.detail-para {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.75;
}

.detail-para strong {
  color: var(--white);
  font-weight: 600;
}

/* Bonus card */
.about-bonus-card {
  border-color: rgba(245, 197, 24, 0.3);
  box-shadow: 0 0 0 1px rgba(245,197,24,0.06), 0 16px 40px rgba(245,197,24,0.04);
}

.about-bonus-card:hover {
  border-color: var(--gold);
  box-shadow: 0 0 0 1px rgba(245,197,24,0.15), 0 20px 50px rgba(245,197,24,0.07);
}

.bonus-glow {
  position: absolute;
  top: -60px;
  right: -60px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(245,197,24,0.08), transparent 70%);
  pointer-events: none;
}

.bonus-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.bonus-tags span {
  background: rgba(245,197,24,0.08);
  border: 1px solid rgba(245,197,24,0.2);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
}

.bonus-highlight {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  padding: 12px 16px;
  background: rgba(245,197,24,0.06);
  border: 1px solid rgba(245,197,24,0.15);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.06em;
}

/* Light mode tweaks */
[data-theme="light"] .pricing-card--featured {
  box-shadow: 0 0 0 1px rgba(2,132,199,0.2), 0 20px 50px rgba(2,132,199,0.08);
}

[data-theme="light"] .about-bonus-card {
  box-shadow: 0 4px 20px rgba(217,119,6,0.06);
}


@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: none;
}

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .hero-layout { grid-template-columns: 1fr; gap: 50px; }
  .hero-logo-panel { margin-top: 10px; }
  .hero-logo-ring--outer { width: 300px; height: 300px; }
  .hero-logo-ring--mid   { width: 230px; height: 230px; }
  .hero-logo-card { width: 200px; height: 200px; }
  .hero-logo-img  { width: 130px; height: 130px; }
  .why-grid { grid-template-columns: 1fr; gap: 50px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-details-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; }
  .course-panel-layout { grid-template-columns: 1fr; padding: 32px 24px; }
  .course-panel-topics ul { grid-template-columns: 1fr; }
  .learn-grid { grid-template-columns: 1fr; }
  .learn-skills-grid { grid-template-columns: 1fr; }
  .courses-cta-strip { flex-direction: column; align-items: flex-start; padding: 36px 28px; }
}

@media (max-width: 768px) {
  nav ul { display: none; }
  .hamburger { display: flex; }

  nav.open ul {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: var(--dark);
    border-bottom: 1px solid var(--border);
    padding: 20px;
    gap: 4px;
  }

  nav.open ul li a {
    display: block;
    padding: 12px 16px;
  }

  .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 30px; }
  .why-features { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 3rem; }
  .hero-actions { flex-direction: column; }
  .contact-form-wrap { padding: 28px 20px; }
}