/* =====================================================
   InterviewReady.ai — styles.css
   Color palette from design:
   --bg:        #141414
   --surface:   #1e1e1e
   --border:    #2a2a2a
   --grad-a:    #60d0f0  (cyan-blue)
   --grad-b:    #c084fc  (violet)
   --accent:    #a855f7  (button purple)
   --text:      #f0f0f0
   --muted:     #888888
===================================================== */

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

:root {
  --bg:        #141414;
  --surface:   #1c1c1e;
  --surface2:  #242428;
  --border:    #2e2e34;
  --grad-a:    #60d0f0;
  --grad-b:    #c084fc;
  --accent:    #a855f7;
  --accent-dk: #7c3aed;
  --text:      #ededed;
  --muted:     #888;
  --faint:     #444;
  --radius:    12px;
  --radius-lg: 20px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Roboto', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}

/* GRADIENT TEXT */
.grad-text {
  background: linear-gradient(100deg, var(--grad-a), var(--grad-b));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* CONTAINER */
.container { max-width: 1120px; margin: 0 auto; padding: 0 28px; }

/* SECTION LABELS */
.section-label {
  display: inline-block;
  font-family: 'Roboto', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--grad-a);
  border: 1px solid rgba(96,208,240,0.25);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.section-title {
  font-family: 'Roboto', sans-serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.12;
  margin-bottom: 52px;
  color: var(--text);
}

/* ── NOISE OVERLAY ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.5;
}

/* ── NAV ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 40px;
  background: rgba(20,20,20,0.7);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}
.nav.scrolled { background: rgba(20,20,20,0.95); }
.nav-logo {
  font-family: 'Roboto', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}
.nav-links {
  display: flex; gap: 32px;
  list-style: none;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  color: var(--grad-b) !important;
  border: 1px solid rgba(192,132,252,0.3);
  padding: 6px 16px;
  border-radius: 100px;
  transition: background 0.2s, color 0.2s !important;
}
.nav-cta:hover { background: rgba(168,85,247,0.15) !important; color: var(--text) !important; }
.nav-hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: 0.3s; }

/* ── BUTTONS ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  color: #fff;
  font-family: 'Roboto', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 13px 28px;
  border-radius: 100px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  box-shadow: 0 0 24px rgba(168,85,247,0.35);
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(168,85,247,0.55);
}
.btn-primary.btn-lg { font-size: 1rem; padding: 16px 36px; }
.btn-ghost {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
  padding: 13px 4px;
}
.btn-ghost:hover { color: var(--text); }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 48px;
  padding: 120px 80px 80px;
  position: relative;
  overflow: hidden;
}
.hero-noise {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 20% 40%, rgba(96,208,240,0.06) 0%, transparent 60%),
              radial-gradient(ellipse 60% 50% at 80% 60%, rgba(168,85,247,0.08) 0%, transparent 60%);
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.25;
  pointer-events: none;
}
.hero-orb-1 { width: 420px; height: 420px; background: var(--grad-b); top: -80px; right: 120px; animation: orbFloat 8s ease-in-out infinite; }
.hero-orb-2 { width: 280px; height: 280px; background: var(--grad-a); bottom: 60px; left: -60px; animation: orbFloat 10s ease-in-out infinite reverse; }
.hero-orb-3 { width: 180px; height: 180px; background: var(--accent); top: 50%; right: 5%; animation: orbFloat 6s ease-in-out infinite 2s; }

@keyframes orbFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-24px) scale(1.04); }
}

.hero-content { position: relative; z-index: 2; }
.hero-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--grad-a);
  background: rgba(96,208,240,0.1);
  border: 1px solid rgba(96,208,240,0.2);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
}
.hero-title {
  font-family: 'Roboto', sans-serif;
  font-size: clamp(3.2rem, 7vw, 6rem);
  font-weight: 800;
  line-height: 1.0;
  margin-bottom: 24px;
}
.hero-dot { color: var(--muted); }
.hero-sub {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 480px;
}
.hero-actions {
  display: flex; gap: 20px; flex-wrap: wrap; align-items: center;
  margin-bottom: 48px;
}
.hero-stats {
  display: flex; gap: 32px; align-items: center; flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-num {
  font-family: 'Roboto', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}
.stat-label { font-size: 0.72rem; color: var(--faint); letter-spacing: 0.06em; }
.stat-divider { width: 1px; height: 36px; background: var(--border); }

/* MOCK CARD */
.hero-visual { position: relative; z-index: 2; }
.mock-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.04);
}
.mock-header {
  display: flex; align-items: center; gap: 6px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
}
.mock-dot { width: 10px; height: 10px; border-radius: 50%; }
.mock-dot.red { background: #ff5f57; }
.mock-dot.yellow { background: #ffbd2e; }
.mock-dot.green { background: #28ca41; }
.mock-title { font-size: 0.75rem; color: var(--muted); margin-left: 8px; }
.mock-body { padding: 28px 24px; display: flex; flex-direction: column; gap: 20px; }
.mock-avatar {
  display: flex; align-items: center; gap: 14px;
}
.avatar-ring {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--grad-a), var(--grad-b));
  padding: 2px;
  flex-shrink: 0;
}
.avatar-face {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--surface2);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Roboto', sans-serif;
  font-size: 0.75rem; font-weight: 700;
  background: linear-gradient(135deg, var(--grad-a), var(--grad-b));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  border: 1px solid rgba(96,208,240,0.3);
}
.mock-question {
  font-size: 0.88rem; color: var(--text); line-height: 1.6;
  border-left: 2px solid var(--accent);
  padding-left: 12px;
  min-height: 56px;
}
.mock-wave {
  display: flex; align-items: center; gap: 3px; height: 28px;
}
.wave-bar {
  width: 3px; border-radius: 3px;
  background: linear-gradient(180deg, var(--grad-a), var(--grad-b));
  animation: wave 1.2s ease-in-out infinite;
}
.wave-bar:nth-child(1) { height: 8px;  animation-delay: 0s; }
.wave-bar:nth-child(2) { height: 16px; animation-delay: .1s; }
.wave-bar:nth-child(3) { height: 22px; animation-delay: .2s; }
.wave-bar:nth-child(4) { height: 28px; animation-delay: .3s; }
.wave-bar:nth-child(5) { height: 20px; animation-delay: .4s; }
.wave-bar:nth-child(6) { height: 14px; animation-delay: .5s; }
.wave-bar:nth-child(7) { height: 9px;  animation-delay: .6s; }
.wave-bar:nth-child(8) { height: 6px;  animation-delay: .7s; }
@keyframes wave {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(0.35); }
}
.mock-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.72rem; color: var(--grad-a);
  background: rgba(96,208,240,0.08);
  border: 1px solid rgba(96,208,240,0.2);
  padding: 5px 12px; border-radius: 100px;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* SCROLL HINT */
.scroll-hint {
  position: absolute; bottom: 36px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  opacity: 0.35;
}
.scroll-mouse {
  width: 22px; height: 36px; border: 2px solid var(--muted);
  border-radius: 100px;
  display: flex; justify-content: center; align-items: flex-start;
  padding-top: 6px;
}
.scroll-wheel {
  width: 3px; height: 7px; background: var(--muted);
  border-radius: 2px;
  animation: scrollDown 1.8s ease-in-out infinite;
}
@keyframes scrollDown {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(10px); opacity: 0; }
}

/* ── HOW IT WORKS ── */
.how {
  padding: 120px 0;
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface) 50%, var(--bg) 100%);
}
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}
.step {
  padding: 32px 28px;
  position: relative;
  border-top: 1px solid var(--border);
  transition: background 0.3s;
}
.step:hover { background: rgba(255,255,255,0.02); }
.step:not(:last-child) { border-right: 1px solid var(--border); }
.step-num {
  font-family: 'Roboto', sans-serif;
  font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.15em; color: var(--faint);
  margin-bottom: 16px;
}
.step-icon { font-size: 2rem; margin-bottom: 16px; }
.step h3 {
  font-family: 'Roboto', sans-serif;
  font-size: 1rem; font-weight: 700;
  line-height: 1.3; margin-bottom: 12px;
  color: var(--text);
}
.step p { font-size: 0.85rem; color: var(--muted); line-height: 1.6; }

/* ── FEATURES ── */
.features { padding: 120px 0; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.feat-card {
  background: var(--surface);
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}
.feat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(96,208,240,0.04) 0%, rgba(168,85,247,0.04) 100%);
  opacity: 0;
  transition: opacity 0.3s;
}
.feat-card:hover::before { opacity: 1; }
.feat-card:hover { background: var(--surface2); }
.feat-large { grid-column: span 2; }
.feat-wide { grid-column: span 2; }
.feat-icon { font-size: 1.8rem; margin-bottom: 16px; }
.feat-card h3 {
  font-family: 'Roboto', sans-serif;
  font-size: 1.05rem; font-weight: 700;
  margin-bottom: 10px; color: var(--text);
}
.feat-card p { font-size: 0.85rem; color: var(--muted); line-height: 1.65; max-width: 400px; }
.feat-tag {
  display: inline-block;
  margin-top: 16px;
  font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--grad-b);
  background: rgba(192,132,252,0.1);
  border: 1px solid rgba(192,132,252,0.2);
  padding: 4px 10px; border-radius: 100px;
}

/* ── EXPERIENCE ── */
.experience {
  padding: 120px 0;
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface) 100%);
}
.exp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.exp-desc { font-size: 0.95rem; color: var(--muted); margin-bottom: 28px; line-height: 1.75; }
.exp-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.exp-list li { display: flex; gap: 10px; font-size: 0.88rem; color: var(--muted); }
.check {
  color: var(--grad-a);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
/* MEET UI */
.meet-ui {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(0,0,0,0.5);
}
.meet-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px;
  background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--border);
}
.meet-logo { font-size: 0.78rem; color: var(--muted); }
.mc { width: 20px; height: 20px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.6rem; cursor: pointer; }
.mc.red { background: rgba(255,95,87,0.2); color: #ff5f57; }
.meet-body {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
  padding: 16px;
}
.meet-tile {
  border-radius: 10px;
  padding: 20px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  position: relative;
  min-height: 130px;
}
.meet-tile.interviewer {
  background: linear-gradient(135deg, rgba(96,208,240,0.1), rgba(168,85,247,0.12));
  border: 1px solid rgba(96,208,240,0.2);
}
.meet-tile.user {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
}
.tile-face {
  width: 52px; height: 52px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Roboto', sans-serif; font-size: 0.8rem; font-weight: 700;
}
.ai-face {
  background: linear-gradient(135deg, var(--grad-a), var(--grad-b));
  color: #141414;
}
.user-face { background: var(--surface2); color: var(--muted); border: 1px solid var(--border); }
.tile-label { font-size: 0.7rem; color: var(--muted); }
.speaking-ring {
  position: absolute; inset: -1px;
  border-radius: 10px;
  border: 2px solid transparent;
  background: linear-gradient(var(--surface), var(--surface)) padding-box,
              linear-gradient(135deg, var(--grad-a), var(--grad-b)) border-box;
  animation: speakPulse 2s ease-in-out infinite;
  pointer-events: none;
}
@keyframes speakPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.meet-footer {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 14px;
  border-top: 1px solid var(--border);
}
.mf-btn {
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--surface2); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 0.9rem;
  transition: background 0.2s;
}
.mf-btn:hover { background: var(--border); }
.mf-btn.end { background: rgba(239,68,68,0.15); border-color: rgba(239,68,68,0.3); color: #ef4444; font-size: 0.7rem; font-weight: 600; }

/* ── INSIGHTS ── */
.insights {
  padding: 120px 0;
  background: var(--surface);
}
.insights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 36px;
}
.insight-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 28px;
  transition: border-color 0.3s, transform 0.3s;
}
.insight-card:hover { border-color: rgba(168,85,247,0.3); transform: translateY(-2px); }
.ins-label {
  font-family: 'Roboto', sans-serif;
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 14px;
}
.ins-bar-wrap {
  height: 4px; background: var(--border); border-radius: 2px;
  margin-bottom: 10px; overflow: hidden;
}
.ins-bar {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--grad-a), var(--grad-b));
  border-radius: 2px;
  transition: width 1.2s cubic-bezier(0.4,0,0.2,1);
}
.ins-score {
  font-family: 'Roboto', sans-serif;
  font-size: 2rem; font-weight: 800; color: var(--text);
  margin-bottom: 12px;
}
.ins-score span { font-size: 1rem; color: var(--muted); }
.insight-card p { font-size: 0.82rem; color: var(--muted); line-height: 1.6; }
.insights-summary {
  display: flex; gap: 20px; align-items: flex-start;
  background: linear-gradient(135deg, rgba(96,208,240,0.06), rgba(168,85,247,0.06));
  border: 1px solid rgba(168,85,247,0.2);
  border-radius: var(--radius);
  padding: 28px 32px;
}
.summary-icon { font-size: 1.8rem; flex-shrink: 0; }
.insights-summary h3 {
  font-family: 'Roboto', sans-serif;
  font-size: 1rem; font-weight: 700;
  margin-bottom: 8px; color: var(--text);
}
.insights-summary p { font-size: 0.85rem; color: var(--muted); }

/* ── USE CASES ── */
.usecases { padding: 120px 0; }
.uc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.uc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: border-color 0.3s, transform 0.3s;
  position: relative;
  overflow: hidden;
}
.uc-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--grad-a), var(--grad-b));
  transform: scaleX(0);
  transition: transform 0.3s;
}
.uc-card:hover::after { transform: scaleX(1); }
.uc-card:hover { border-color: rgba(96,208,240,0.25); transform: translateY(-4px); }
.uc-emoji { font-size: 2rem; display: block; margin-bottom: 16px; }
.uc-card h3 {
  font-family: 'Roboto', sans-serif;
  font-size: 0.95rem; font-weight: 700;
  margin-bottom: 10px; color: var(--text);
}
.uc-card p { font-size: 0.83rem; color: var(--muted); line-height: 1.6; }

/* ── CTA ── */
.cta-section {
  padding: 120px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--surface);
}
.cta-orb {
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(168,85,247,0.15) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.cta-badge {
  display: inline-block;
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--grad-b);
  background: rgba(192,132,252,0.1);
  border: 1px solid rgba(192,132,252,0.25);
  padding: 5px 14px; border-radius: 100px;
  margin-bottom: 24px;
}
.cta-title {
  font-family: 'Roboto', sans-serif;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 800; line-height: 1.1;
  margin-bottom: 20px;
}
.cta-sub { font-size: 1rem; color: var(--muted); max-width: 520px; margin: 0 auto 40px; }

/* ── CONTACT ── */
.contact { padding: 120px 0; }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 680px;
}
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: border-color 0.3s, transform 0.3s;
}
.contact-card:hover { border-color: rgba(192,132,252,0.35); transform: translateY(-3px); }
.contact-avatar {
  width: 52px; height: 52px; border-radius: 50%;
  background: linear-gradient(135deg, var(--grad-a), var(--grad-b));
  display: flex; align-items: center; justify-content: center;
  font-family: 'Roboto', sans-serif; font-weight: 700;
  font-size: 0.85rem; color: #141414;
  margin-bottom: 16px;
}
.contact-avatar.av2 {
  background: linear-gradient(135deg, var(--grad-b), #e879f9);
}
.contact-card h3 {
  font-family: 'Roboto', sans-serif;
  font-size: 1.05rem; font-weight: 700;
  margin-bottom: 4px;
}
.contact-role { font-size: 0.78rem; color: var(--muted); margin-bottom: 16px; }
.contact-email {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.82rem; color: var(--grad-a);
  text-decoration: none;
  transition: color 0.2s;
  word-break: break-all;
}
.contact-email:hover { color: var(--grad-b); }

/* ── FOOTER ── */
.footer {
  padding: 40px;
  border-top: 1px solid var(--border);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  text-align: center;
}
.footer-logo {
  font-family: 'Roboto', sans-serif;
  font-size: 1rem; font-weight: 700;
  color: var(--text);
}
.footer p { font-size: 0.78rem; color: var(--faint); }

/* ── REVEAL ANIMATION ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; padding: 100px 40px 60px; gap: 60px; }
  .hero-visual { max-width: 480px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step:nth-child(2) { border-right: none; }
  .uc-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feat-large, .feat-wide { grid-column: span 2; }
}
@media (max-width: 768px) {
  .nav { padding: 14px 24px; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 16px;
    position: fixed; top: 60px; left: 0; right: 0;
    background: var(--surface); padding: 24px;
    border-bottom: 1px solid var(--border);
  }
  .hero { padding: 100px 24px 60px; gap: 40px; }
  .how .container, .features .container, .experience .container,
  .insights .container, .usecases .container, .contact .container,
  .cta-section .container { padding: 0 20px; }
  .steps { grid-template-columns: 1fr; }
  .step:not(:last-child) { border-right: none; border-bottom: 1px solid var(--border); }
  .exp-grid { grid-template-columns: 1fr; gap: 48px; }
  .insights-grid { grid-template-columns: 1fr; }
  .uc-grid { grid-template-columns: 1fr 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .feat-large, .feat-wide { grid-column: span 1; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .uc-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
}