/* =============================================
   BTC MENTOR — CORPORATE TRAINING
   Style Sheet
   ============================================= */

/* -------- BRAND FONTS (Avenir — BTC Sessions brand package) -------- */
@font-face {
  font-family: 'Avenir';
  src: url('BTC Sessions Brand Assets/Assets/Font/Avenir/AvenirLTStd-Book.otf') format('opentype');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'Avenir';
  src: url('BTC Sessions Brand Assets/Assets/Font/Avenir/AvenirLTStd-Roman.otf') format('opentype');
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: 'Avenir';
  src: url('BTC Sessions Brand Assets/Assets/Font/Avenir/AvenirLTStd-Black.otf') format('opentype');
  font-weight: 700;
  font-display: swap;
}

/* -------- CSS VARIABLES -------- */
:root {
  /* Brand palette — BTC Sessions brand book */
  --bg:           #0D101C;   /* Midnight Sky — brand dark (replaces pure black) */
  --bg-card:      #141829;   /* slightly lighter for cards */
  --bg-alt:       #0f1220;   /* alt sections */
  --orange:       #f7931a;   /* Bitcoin Orange */
  --orange-dark:  #d97b10;
  --orange-glow:  rgba(247, 147, 26, 0.12);
  --blue:         #7ED3F2;   /* Electro Blue — brand accent */
  --blue-dark:    #4db8e0;
  --blue-glow:    rgba(126, 211, 242, 0.1);
  --white:        #ffffff;
  --gray:         #9ca3af;
  --light-gray:   #d1d5db;
  --border:       rgba(255, 255, 255, 0.07);
  --border-blue:  rgba(126, 211, 242, 0.15);
  --navy:         #151d32;
  --font-display: 'Bebas Neue', sans-serif;
  --font-body:    'Avenir', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius:       12px;
  --radius-sm:    8px;
  --radius-pill:  9999px;
  --shadow:       0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg:    0 16px 56px rgba(0, 0, 0, 0.55);
  --max-w:        1200px;
  --t:            0.2s ease;
}

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

/* -------- CONTAINER -------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}

/* ============================
   BUTTONS
   ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  font-size: 0.925rem;
  font-weight: 600;
  letter-spacing: 0.025em;
  cursor: pointer;
  transition: all var(--t);
  white-space: nowrap;
  border: 2px solid transparent;
}
.btn-orange {
  background: var(--orange);
  color: #fff;
  border-color: var(--orange);
}
.btn-orange:hover {
  background: var(--orange-dark);
  border-color: var(--orange-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(247, 147, 26, 0.35);
}
.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--white);
}
.btn-outline:hover {
  border-color: var(--orange);
  color: var(--orange);
}
.btn-outline-white {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--white);
}
.btn-outline-white:hover {
  border-color: rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.05);
}
.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--white);
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--white);
}
.btn-lg  { padding: 15px 36px; font-size: 1rem; }
.btn-xl  { padding: 17px 44px; font-size: 1.05rem; }

/* ============================
   TYPOGRAPHY UTILITIES
   ============================ */
.eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 14px;
  display: block;
}
.eyebrow--dark  { color: rgba(0, 0, 0, 0.55); }
.eyebrow--light { color: rgba(255, 255, 255, 0.6); }

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  line-height: 1.03;
  letter-spacing: 0.01em;
  color: var(--white);
  margin-bottom: 20px;
}
.section-heading--dark  { color: #0d0d0d; }
.section-heading--light { color: var(--white); }

.section-sub {
  font-size: 1.075rem;
  color: var(--gray);
  max-width: 620px;
  margin: 0 auto 60px;
  line-height: 1.75;
}

.body-text {
  font-size: 1.05rem;
  color: var(--light-gray);
  line-height: 1.8;
  margin-bottom: 18px;
}
.body-text strong { color: var(--white); }

.text-orange { color: var(--orange); }
.text-center { text-align: center; }

/* ============================
   SECTIONS
   ============================ */
.section       { padding: 108px 0; }
.section--dark { background: var(--bg-alt); }
.section--dark .eyebrow { color: var(--blue); }
.section--orange { background: var(--orange); }

/* ============================
   NAVIGATION
   ============================ */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  background: rgba(13, 16, 28, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(126, 211, 242, 0.12);
  transition: background var(--t);
}
#nav.scrolled { background: rgba(13, 16, 28, 0.97); }

.nav-inner {
  display: flex;
  align-items: center;
  height: 72px;
  gap: 40px;
}
.nav-logo { flex-shrink: 0; }
.nav-logo img { height: 30px; width: auto; }

.nav-links {
  display: flex;
  gap: 32px;
  flex: 1;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray);
  letter-spacing: 0.03em;
  transition: color var(--t);
}
.nav-links a:hover { color: var(--white); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  display: block;
  transition: all var(--t);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 8px 28px 24px;
  background: rgba(10, 10, 10, 0.99);
  border-top: 1px solid var(--border);
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  padding: 14px 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--gray);
  border-bottom: 1px solid var(--border);
  transition: color var(--t);
}
.nav-mobile a:last-child {
  border-bottom: none;
  margin-top: 16px;
  align-self: flex-start;
}
.nav-mobile a:hover { color: var(--white); }

/* ============================
   HERO
   ============================ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

/* Dot grid background */
.hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(126, 211, 242, 0.22) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.3;
  pointer-events: none;
}
/* Orange glow — bottom right */
.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -250px;
  right: -200px;
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, rgba(247, 147, 26, 0.1) 0%, transparent 60%);
  pointer-events: none;
}
/* Blue glow — top left */
.hero-bg::before {
  content: '';
  position: absolute;
  top: -150px;
  left: -150px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(126, 211, 242, 0.09) 0%, transparent 65%);
  pointer-events: none;
}
/* Circuit lines texture */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('BTC Sessions Brand Assets/Assets/Circuit lines/BTCsessions-circuit-lines.png');
  background-size: cover;
  background-position: center;
  opacity: 0.04;
  pointer-events: none;
  z-index: 0;
}
/* Bottom fade */
#hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 22px;
  display: block;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 6vw, 5.8rem);
  line-height: 1.0;
  letter-spacing: 0.01em;
  margin-bottom: 26px;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--light-gray);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-trust {
  display: flex;
  flex-direction: column;
  gap: 11px;
  margin-bottom: 40px;
}
.hero-trust li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--light-gray);
}

.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-cert-preview {
  position: relative;
  max-width: 480px;
  width: 100%;
}
.hero-cert-preview img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow:
    0 24px 80px rgba(0, 0, 0, 0.65),
    0 0 0 1px rgba(255, 255, 255, 0.06),
    0 0 60px rgba(247, 147, 26, 0.06);
  transform: perspective(900px) rotateY(-5deg) rotateX(2deg);
  transition: transform 0.5s ease;
}
.hero-cert-preview:hover img {
  transform: perspective(900px) rotateY(-2deg) rotateX(1deg);
}
.cert-badge {
  position: absolute;
  bottom: -18px;
  right: -12px;
  background: var(--orange);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  gap: 7px;
  box-shadow: 0 6px 24px rgba(247, 147, 26, 0.45);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  animation: heroBounce 2.2s ease-in-out infinite;
  opacity: 0.6;
}
@keyframes heroBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(10px); }
}

/* ============================
   STATS BAR
   ============================ */
.stats-bar {
  background: var(--navy);
  padding: 52px 0;
  border-top: 1px solid rgba(126, 211, 242, 0.2);
  border-bottom: 1px solid rgba(126, 211, 242, 0.2);
  position: relative;
  overflow: hidden;
}
/* Subtle blue shimmer across the stats bar */
.stats-bar::before {
  content: '';
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 200px;
  background: radial-gradient(ellipse, rgba(126, 211, 242, 0.06) 0%, transparent 70%);
  pointer-events: none;
}
.stats-grid {
  display: flex;
  align-items: center;
  justify-content: center;
}
.stat {
  flex: 1;
  text-align: center;
  padding: 0 36px;
}
.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 4vw, 3.8rem);
  color: var(--orange);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 0.82rem;
  color: var(--gray);
  line-height: 1.45;
  max-width: 150px;
  margin: 0 auto;
  display: block;
}
.stat-divider {
  width: 1px;
  height: 64px;
  background: rgba(126, 211, 242, 0.18);
  flex-shrink: 0;
}

/* ============================
   PROBLEM SECTION
   ============================ */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.problem-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.problem-card {
  padding: 30px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.problem-card--bad {
  background: rgba(239, 68, 68, 0.05);
  border-color: rgba(239, 68, 68, 0.18);
}
.problem-card--good {
  background: var(--orange-glow);
  border-color: rgba(247, 147, 26, 0.2);
}
.problem-card-icon {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1;
}
.problem-card--bad  .problem-card-icon { color: #ef4444; }
.problem-card--good .problem-card-icon { color: var(--orange); }
.problem-card h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--white);
}
.problem-card ul { display: flex; flex-direction: column; gap: 7px; }
.problem-card li {
  font-size: 0.9rem;
  color: var(--gray);
  padding-left: 16px;
  position: relative;
}
.problem-card li::before { content: '–'; position: absolute; left: 0; }

/* ============================
   DELIVERY GRID
   ============================ */
.delivery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.delivery-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: border-color var(--t), transform var(--t);
}
.delivery-card:hover {
  border-color: var(--blue);
  box-shadow: 0 0 20px rgba(126, 211, 242, 0.08);
  transform: translateY(-4px);
}
.delivery-icon { margin-bottom: 20px; }
.delivery-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--white);
}
.delivery-card p {
  font-size: 0.875rem;
  color: var(--gray);
  line-height: 1.65;
}

/* ============================
   CURRICULUM
   ============================ */
.curriculum-units {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 48px;
}
.unit-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--t);
}
.unit-card:hover,
.unit-card.open { border-color: rgba(247, 147, 26, 0.28); }

.unit-header {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 32px;
  cursor: pointer;
  user-select: none;
}
.unit-number {
  font-family: var(--font-display);
  font-size: 3.2rem;
  color: var(--orange);
  opacity: 0.55;
  line-height: 1;
  min-width: 60px;
}
.unit-info { flex: 1; }
.unit-info h3 {
  font-family: var(--font-display);
  font-size: 1.9rem;
  letter-spacing: 0.03em;
  color: var(--white);
  margin-bottom: 3px;
}
.unit-info p { font-size: 0.875rem; color: var(--gray); }
.unit-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--gray);
  flex-shrink: 0;
  transition: all var(--t);
}
.unit-toggle svg { transition: transform 0.3s ease; }
.unit-card.open .unit-toggle {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-glow);
}
.unit-card.open .unit-toggle svg { transform: rotate(180deg); }

.unit-lectures {
  display: none;
  flex-direction: column;
  border-top: 1px solid var(--border);
}
.unit-card.open .unit-lectures { display: flex; }

.lecture {
  display: flex;
  gap: 20px;
  padding: 20px 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  transition: background var(--t);
  align-items: flex-start;
}
.lecture:last-child { border-bottom: none; }
.lecture:hover { background: rgba(255, 255, 255, 0.02); }
.lecture-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--orange);
  opacity: 0.45;
  min-width: 40px;
  line-height: 1.3;
  flex-shrink: 0;
}
.lecture strong {
  display: block;
  font-size: 0.95rem;
  color: var(--white);
  margin-bottom: 4px;
}
.lecture p {
  font-size: 0.855rem;
  color: var(--gray);
  line-height: 1.55;
  margin: 0;
}

/* Exam bar */
.exam-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid rgba(247, 147, 26, 0.18);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 16px;
  gap: 0;
}
.exam-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
  padding: 0 16px;
}
.exam-weight {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--orange);
  line-height: 1;
}
.exam-item span:not(.exam-weight) {
  font-size: 0.8rem;
  color: var(--gray);
  line-height: 1.4;
}
.exam-divider {
  width: 1px;
  height: 44px;
  background: rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}
.exam-note {
  text-align: center;
  font-size: 0.875rem;
  color: var(--gray);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ============================
   MENTORS
   ============================ */
.mentor-featured {
  display: flex;
  gap: 40px;
  align-items: flex-start;
  background: linear-gradient(135deg, rgba(126, 211, 242, 0.04) 0%, var(--bg-card) 60%);
  border: 1px solid rgba(126, 211, 242, 0.2);
  border-radius: var(--radius);
  padding: 44px;
  margin-bottom: 24px;
  box-shadow: 0 0 40px rgba(126, 211, 242, 0.05);
}
.mentor-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--orange-glow);
  border: 2px solid rgba(247, 147, 26, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--orange);
  flex-shrink: 0;
  letter-spacing: 0.03em;
}
.mentor-avatar--large {
  width: 120px;
  height: 120px;
  font-size: 1.7rem;
  flex-shrink: 0;
}
.mentor-badge {
  display: inline-block;
  background: var(--orange-glow);
  color: var(--orange);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}
.mentor-bio h3 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  letter-spacing: 0.03em;
  margin-bottom: 4px;
}
.mentor-title {
  font-size: 0.875rem;
  color: var(--orange);
  margin-bottom: 18px;
  font-weight: 500;
}
.mentor-bio p {
  font-size: 0.95rem;
  color: var(--gray);
  line-height: 1.75;
  margin-bottom: 12px;
}
/* Photo avatar variant */
.mentor-avatar--photo {
  background: transparent;
  border-color: rgba(247, 147, 26, 0.25);
  overflow: hidden;
  padding: 0;
}
.mentor-avatar--photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.mentor-note {
  font-size: 0.875rem !important;
  color: var(--orange) !important;
  font-weight: 500;
  margin-bottom: 0 !important;
}

.mentors-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.mentor-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: border-color var(--t), transform var(--t);
}
.mentor-card:hover {
  border-color: rgba(247, 147, 26, 0.28);
  transform: translateY(-3px);
}
.mentor-card .mentor-avatar { margin: 0 auto 16px; }
.mentor-card h4 {
  font-size: 0.925rem;
  font-weight: 700;
  margin-bottom: 5px;
  color: var(--white);
}
.mentor-card p { font-size: 0.8rem; color: var(--gray); }

/* ============================
   BENEFITS
   ============================ */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.benefit-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color var(--t), transform var(--t);
}
.benefit-card:hover {
  border-color: rgba(247, 147, 26, 0.28);
  transform: translateY(-4px);
}
.benefit-icon {
  margin-bottom: 20px;
  padding: 12px;
  background: var(--orange-glow);
  border-radius: var(--radius-sm);
  width: fit-content;
}
.benefit-card h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--white);
}
.benefit-card p { font-size: 0.875rem; color: var(--gray); line-height: 1.65; }

/* ============================
   HOW IT WORKS (Orange section)
   ============================ */
.steps-grid {
  display: flex;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
}
.step {
  flex: 1;
  text-align: center;
  padding: 0 36px;
}
.step-number {
  font-family: var(--font-display);
  font-size: 5.5rem;
  color: rgba(0, 0, 0, 0.1);
  line-height: 1;
  margin-bottom: 4px;
}
.step h3 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: #0d0d0d;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.step p {
  font-size: 0.9rem;
  color: rgba(0, 0, 0, 0.62);
  line-height: 1.7;
}
.step-arrow {
  font-size: 2rem;
  color: rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
  line-height: 1;
}

/* ============================
   TIERS
   ============================ */
.tiers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.tier-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color var(--t);
}
.tier-card:hover { border-color: rgba(255, 255, 255, 0.14); }
.tier-card--featured {
  border-color: var(--orange);
  background: linear-gradient(170deg, rgba(247, 147, 26, 0.07) 0%, var(--bg-card) 50%);
}
.tier-popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--orange);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: 5px 18px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}
.tier-size {
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--white);
  line-height: 1;
  margin-bottom: 2px;
}
.tier-label {
  font-size: 0.75rem;
  color: var(--gray);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 18px;
}
.tier-mentors {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--orange);
  padding: 14px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
  line-height: 1.5;
}
.includes-ben {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: rgba(247, 147, 26, 0.65);
  margin-top: 2px;
}
.tier-features {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-bottom: 28px;
}
.tier-features li {
  font-size: 0.855rem;
  color: var(--gray);
  padding-left: 18px;
  position: relative;
  line-height: 1.4;
}
.tier-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--orange);
  font-size: 0.8rem;
}
.tier-features li strong { color: var(--light-gray); }
.tier-card .btn { width: 100%; }

/* ============================
   ADD-ONS
   ============================ */
.addons-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.addon-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: border-color var(--t), transform var(--t);
}
.addon-card:hover {
  border-color: rgba(247, 147, 26, 0.28);
  transform: translateY(-4px);
}
.addon-icon {
  margin-bottom: 20px;
  padding: 12px;
  background: var(--orange-glow);
  border-radius: var(--radius-sm);
  width: fit-content;
}
.addon-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--white);
}
.addon-card p { font-size: 0.865rem; color: var(--gray); line-height: 1.65; }

/* ============================
   CERTIFICATION
   ============================ */
.cert-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.cert-requirements {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 28px 0;
}
.cert-req {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.req-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--orange-glow);
  border: 1px solid rgba(247, 147, 26, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}
.cert-req strong {
  display: block;
  font-size: 0.95rem;
  color: var(--white);
  margin-bottom: 3px;
}
.cert-req p { font-size: 0.845rem; color: var(--gray); margin: 0; }

.cert-badge-note {
  font-size: 0.875rem;
  color: var(--gray);
  padding: 16px 20px;
  background: var(--orange-glow);
  border: 1px solid rgba(247, 147, 26, 0.14);
  border-radius: var(--radius-sm);
  line-height: 1.65;
}
.cert-badge-note strong { color: var(--orange); }

.cert-image-wrap { position: relative; }
.cert-image {
  width: 100%;
  border-radius: var(--radius);
  box-shadow:
    0 28px 80px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(255, 255, 255, 0.06);
}
.cert-glow {
  position: absolute;
  inset: -50px;
  background: radial-gradient(circle, rgba(126, 211, 242, 0.1) 0%, transparent 65%);
  z-index: -1;
  pointer-events: none;
}

/* ============================
   FINAL CTA
   ============================ */
.section--cta {
  background: linear-gradient(140deg, var(--bg) 0%, #0e1428 50%, var(--navy) 100%);
  position: relative;
  overflow: hidden;
}
.section--cta::before {
  content: '';
  position: absolute;
  top: -250px;
  left: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(247, 147, 26, 0.07) 0%, transparent 60%);
  pointer-events: none;
}
.cta-inner {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.cta-sub {
  font-size: 1.075rem;
  color: var(--gray);
  margin-bottom: 44px;
  line-height: 1.75;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.cta-email { font-size: 0.875rem; color: var(--gray); }
.cta-email a { color: var(--orange); font-weight: 500; transition: color var(--t); }
.cta-email a:hover { color: var(--orange-dark); }

/* ============================
   FOOTER
   ============================ */
#footer {
  background: #080808;
  border-top: 1px solid var(--border);
  padding: 64px 0 40px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}
.footer-logo img { height: 28px; opacity: 0.8; }
.footer-tagline { font-size: 0.875rem; color: var(--gray); font-style: italic; }
.footer-links {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  font-size: 0.85rem;
  color: var(--gray);
  transition: color var(--t);
}
.footer-links a:hover { color: var(--white); }
.footer-social { display: flex; gap: 28px; }
.footer-social a {
  font-size: 0.85rem;
  color: var(--orange);
  transition: color var(--t);
}
.footer-social a:hover { color: var(--orange-dark); }
.footer-copy {
  font-size: 0.775rem;
  color: rgba(255, 255, 255, 0.2);
  margin-top: 8px;
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 1100px) {
  .delivery-grid  { grid-template-columns: repeat(2, 1fr); }
  .mentors-grid   { grid-template-columns: repeat(3, 1fr); }
  .addons-grid    { grid-template-columns: repeat(2, 1fr); }
  .tiers-grid     { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}

@media (max-width: 900px) {
  .hero-inner       { grid-template-columns: 1fr; gap: 56px; }
  .hero-visual      { order: -1; }
  .hero-cert-preview { max-width: 380px; margin: 0 auto; }
  .problem-grid     { grid-template-columns: 1fr; gap: 48px; }
  .cert-grid        { grid-template-columns: 1fr; gap: 48px; }
  .cert-image-wrap  { order: -1; }
  .benefits-grid    { grid-template-columns: repeat(2, 1fr); }
  .stats-grid       { flex-wrap: wrap; }
  .stat             { min-width: 50%; padding: 16px 20px; }
  .stat-divider     { display: none; }
  .steps-grid       { flex-direction: column; gap: 32px; max-width: 440px; }
  .step-arrow       { transform: rotate(90deg); font-size: 1.4rem; }
  .mentor-featured  { flex-direction: column; gap: 24px; }
}

@media (max-width: 680px) {
  .section            { padding: 80px 0; }
  .nav-links          { display: none; }
  #nav > .nav-inner > .btn { display: none; }
  .nav-toggle         { display: flex; }
  .hero-headline      { font-size: 3rem; }
  .hero-sub           { font-size: 1.05rem; }
  .hero-ctas          { flex-direction: column; align-items: flex-start; }
  .tiers-grid         { grid-template-columns: 1fr; }
  .benefits-grid      { grid-template-columns: 1fr; }
  .delivery-grid      { grid-template-columns: 1fr; }
  .mentors-grid       { grid-template-columns: repeat(2, 1fr); }
  .addons-grid        { grid-template-columns: 1fr; }
  .cta-actions        { flex-direction: column; align-items: center; }
  .exam-bar           { flex-wrap: wrap; gap: 12px; }
  .exam-divider       { display: none; }
  .unit-header        { padding: 20px; gap: 16px; }
  .unit-number        { font-size: 2.2rem; min-width: 48px; }
  .lecture            { padding: 16px 20px; }
  .mentor-featured    { padding: 28px; }
  .steps-grid         { max-width: 100%; }
  .step               { padding: 0 16px; }
  .footer-links       { gap: 20px; }
}

/* ============================
   FADE-IN ANIMATION
   ============================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 420px) {
  .container          { padding: 0 20px; }
  .hero-headline      { font-size: 2.6rem; }
  .mentors-grid       { grid-template-columns: 1fr; }
  .stat               { min-width: 100%; }
}