/* =====================================================
   NIKHIL RAI — PORTFOLIO
   Premium / Apple × Linear × Founder
   ===================================================== */

/* Self-hosted Inter (variable, latin) — no third-party font dependency */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('../fonts/inter-variable.woff2') format('woff2');
}

:root {
  /* Dark theme (default) */
  --bg: #07080d;
  --bg-elev: #0d0f17;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);

  --text: #f4f5f7;
  --text-soft: #c3c7d1;
  --muted: #8a90a2;

  --brand: #6d5dfc;
  --brand-2: #4f9dff;
  --accent: #18d9c4;

  --grad: linear-gradient(120deg, #6d5dfc 0%, #4f9dff 50%, #18d9c4 100%);
  --grad-soft: linear-gradient(120deg, rgba(109,93,252,.18), rgba(24,217,196,.18));

  --shadow-sm: 0 4px 16px rgba(0, 0, 0, .35);
  --shadow: 0 20px 50px -12px rgba(0, 0, 0, .5);
  --shadow-glow: 0 0 60px -10px rgba(109, 93, 252, .45);

  --radius: 20px;
  --radius-lg: 28px;
  --maxw: 1140px;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

body.light {
  --bg: #f6f7fb;
  --bg-elev: #ffffff;
  --surface: rgba(255, 255, 255, 0.7);
  --surface-2: rgba(255, 255, 255, 0.9);
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.14);

  --text: #0d1220;
  --text-soft: #2c3344;
  --muted: #5b6376;

  --shadow-sm: 0 4px 16px rgba(15, 23, 42, .06);
  --shadow: 0 24px 50px -18px rgba(15, 23, 42, .18);
  --shadow-glow: 0 0 60px -10px rgba(109, 93, 252, .25);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background .4s var(--ease), color .4s var(--ease);
}

/* Ambient backdrop */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  overflow: hidden;
}
.backdrop::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(40rem 30rem at 12% -5%, rgba(109, 93, 252, .22), transparent 60%),
    radial-gradient(36rem 28rem at 95% 5%, rgba(79, 157, 255, .18), transparent 60%),
    radial-gradient(40rem 36rem at 60% 110%, rgba(24, 217, 196, .14), transparent 60%);
  transition: opacity .4s var(--ease);
}
.backdrop::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  opacity: .5;
}

.container {
  width: min(var(--maxw), 90%);
  margin-inline: auto;
}

/* ---------- Typography ---------- */
h1, h2, h3 { line-height: 1.1; letter-spacing: -0.02em; font-weight: 700; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--brand-2);
}

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

/* ---------- Scroll progress ---------- */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0;
  background: var(--grad);
  z-index: 2000;
  transition: width .1s linear;
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--border);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -.03em;
  text-decoration: none;
  color: var(--text);
}
.logo span { color: var(--brand-2); }

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav a {
  position: relative;
  text-decoration: none;
  color: var(--text-soft);
  font-weight: 500;
  font-size: .94rem;
  padding: 8px 14px;
  border-radius: 10px;
  transition: color .25s, background .25s;
}
.nav a:hover { color: var(--text); background: var(--surface); }
.nav a.active { color: var(--text); }
.nav a.active::after {
  content: '';
  position: absolute;
  left: 14px; right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
}

.theme-btn {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  margin-left: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 12px;
  cursor: pointer;
  transition: border-color .25s, transform .25s, background .25s;
}
.theme-btn:hover { border-color: var(--border-strong); transform: translateY(-2px); }

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px; height: 42px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  width: 18px; height: 2px;
  margin-inline: auto;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .2s;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(70px, 12vh, 130px) 0 90px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 60px;
  align-items: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 100px;
  font-size: .85rem;
  font-weight: 500;
  color: var(--text-soft);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  margin-bottom: 26px;
}
.badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(24, 217, 196, .18);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(24, 217, 196, .18); }
  50% { box-shadow: 0 0 0 7px rgba(24, 217, 196, .04); }
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -.035em;
  margin-bottom: 24px;
}
.hero p.lead {
  font-size: clamp(1.02rem, 1.4vw, 1.18rem);
  color: var(--text-soft);
  max-width: 540px;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 38px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 14px 26px;
  border-radius: 14px;
  font-weight: 600;
  font-size: .96rem;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .25s var(--ease), box-shadow .3s var(--ease), background .25s, border-color .25s;
}
.btn svg { transition: transform .25s var(--ease); }
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 0 70px -8px rgba(109, 93, 252, .6); }
.btn-primary:hover svg { transform: translateX(4px); }
.btn-ghost {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover { transform: translateY(-3px); border-color: var(--border-strong); background: var(--surface-2); }

.socials {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.socials a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  transition: color .25s, border-color .25s, transform .25s, background .25s;
}
.socials a:hover { color: var(--text); border-color: var(--border-strong); transform: translateY(-2px); background: var(--surface-2); }
.socials svg { width: 16px; height: 16px; }

/* Hero portrait */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}
.portrait {
  position: relative;
  width: min(360px, 80%);
  aspect-ratio: 1;
}
.portrait .ring {
  position: absolute;
  inset: -14px;
  border-radius: 36px;
  background: var(--grad);
  opacity: .5;
  filter: blur(26px);
  animation: float 7s ease-in-out infinite;
}
.portrait picture { display: contents; }
.portrait img,
.portrait .placeholder {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 30px;
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow);
}
.portrait .placeholder {
  display: none;
  place-items: center;
  font-size: 5rem;
  font-weight: 800;
  letter-spacing: -.04em;
  background: var(--surface-2);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  color: var(--text);
}
.portrait .placeholder span { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 15px;
  border-radius: 16px;
  background: color-mix(in srgb, var(--bg-elev) 70%, transparent);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
  animation: float 6s ease-in-out infinite;
}
.chip-emoji { font-size: 1.25rem; }
.chip b { display: block; font-size: .9rem; font-weight: 600; }
.chip small { color: var(--muted); font-size: .76rem; }
.chip-1 { top: 14%; left: -22px; }
.chip-2 { bottom: 14%; right: -22px; animation-delay: -3s; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.scroll-cue {
  display: flex;
  justify-content: center;
  margin-top: 64px;
}
.scroll-cue .mouse {
  width: 24px; height: 38px;
  border: 2px solid var(--border-strong);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 7px;
}
.scroll-cue .mouse i {
  width: 3px; height: 7px;
  border-radius: 3px;
  background: var(--brand-2);
  animation: wheel 1.8s var(--ease) infinite;
}
@keyframes wheel {
  0% { opacity: 0; transform: translateY(-4px); }
  40% { opacity: 1; }
  100% { opacity: 0; transform: translateY(9px); }
}

/* ---------- Sections ---------- */
.section { padding: clamp(70px, 11vh, 120px) 0; }
.section-head { max-width: 640px; margin-bottom: 52px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 {
  font-size: clamp(2rem, 4.2vw, 3rem);
  margin-top: 14px;
}
.section-head p { color: var(--muted); margin-top: 14px; font-size: 1.05rem; }

/* ---------- Stats ---------- */
.stats { position: relative; padding: 0 0 10px; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.stat {
  padding: 26px 24px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  transition: transform .35s var(--ease), border-color .35s, background .35s;
}
.stat:hover { transform: translateY(-6px); border-color: var(--border-strong); background: var(--surface-2); }
.stat .ico {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border-radius: 13px;
  background: var(--grad-soft);
  border: 1px solid var(--border);
  color: var(--brand-2);
  margin-bottom: 16px;
}
.stat h3 { font-size: 1.05rem; margin-bottom: 6px; }
.stat p { color: var(--muted); font-size: .92rem; line-height: 1.55; }

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.about-copy p { color: var(--text-soft); font-size: 1.08rem; margin-bottom: 18px; }
.about-copy p:last-child { margin-bottom: 0; }
.about-copy strong { color: var(--text); font-weight: 600; }
.principles {
  display: grid;
  gap: 14px;
}
.principle {
  display: flex;
  gap: 16px;
  padding: 22px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  transition: transform .3s var(--ease), border-color .3s;
}
.principle:hover { transform: translateX(6px); border-color: var(--border-strong); }
.principle .n {
  font-size: .9rem;
  font-weight: 700;
  color: var(--brand-2);
  font-variant-numeric: tabular-nums;
}
.principle h3 { font-size: 1rem; margin-bottom: 4px; }
.principle p { color: var(--muted); font-size: .9rem; }

/* ---------- Cards (Expertise / Projects) ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  position: relative;
  padding: 30px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  overflow: hidden;
  transition: transform .4s var(--ease), border-color .4s, background .4s;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-soft);
  opacity: 0;
  transition: opacity .4s var(--ease);
}
.card > * { position: relative; }
.card:hover { transform: translateY(-8px); border-color: var(--border-strong); }
.card:hover::before { opacity: 1; }
.card .ico {
  display: grid;
  place-items: center;
  width: 52px; height: 52px;
  border-radius: 15px;
  background: var(--grad-soft);
  border: 1px solid var(--border);
  color: var(--brand-2);
  margin-bottom: 20px;
  transition: transform .4s var(--ease);
}
.card:hover .ico { transform: scale(1.08) rotate(-4deg); }
.card h3 { font-size: 1.22rem; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: .96rem; }
.card .tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--brand-2);
  padding: 5px 11px;
  border-radius: 100px;
  background: var(--grad-soft);
  border: 1px solid var(--border);
  margin-bottom: 16px;
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  margin-left: 8px;
  padding-left: 36px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(var(--brand), var(--accent), transparent);
}
.tl-item {
  position: relative;
  padding: 0 0 36px;
}
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: '';
  position: absolute;
  left: -36px; top: 5px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--brand-2);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 25%, transparent);
}
.tl-item .yr {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--brand-2);
}
.tl-item h3 { font-size: 1.28rem; margin: 6px 0 8px; }
.tl-item p { color: var(--muted); max-width: 600px; }

/* ---------- Contact ---------- */
.contact-wrap {
  position: relative;
  padding: clamp(36px, 6vw, 64px);
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.contact-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(30rem 20rem at 50% -20%, rgba(109, 93, 252, .2), transparent 70%);
  pointer-events: none;
}
.contact-wrap > * { position: relative; }
.contact-head { text-align: center; margin-bottom: 40px; }
.contact-head h2 { font-size: clamp(2rem, 4vw, 2.8rem); margin: 12px 0; }
.contact-head p { color: var(--muted); max-width: 480px; margin-inline: auto; }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 22px;
  border-radius: var(--radius);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  transition: transform .3s var(--ease), border-color .3s, background .3s;
}
.contact-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.contact-card .ico {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  flex-shrink: 0;
  border-radius: 13px;
  background: var(--grad-soft);
  border: 1px solid var(--border);
  color: var(--brand-2);
}
.contact-card .meta { flex: 1; min-width: 0; }
.contact-card .meta small { color: var(--muted); font-size: .78rem; display: block; }
.contact-card .meta b { font-weight: 600; font-size: .98rem; word-break: break-word; }
.contact-card .arrow { color: var(--muted); transition: transform .3s var(--ease), color .3s; }
.contact-card:hover .arrow { transform: translate(3px, -3px); color: var(--brand-2); }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 36px;
  margin-top: 40px;
}
.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-nav { display: flex; gap: 8px; flex-wrap: wrap; }
.footer-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: .92rem;
  padding: 6px 12px;
  border-radius: 8px;
  transition: color .25s, background .25s;
}
.footer-nav a:hover { color: var(--text); background: var(--surface); }
.footer-bottom {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: .88rem;
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.show { opacity: 1; transform: none; }

/* ---------- Linked project cards ---------- */
a.card { text-decoration: none; color: inherit; display: block; }
.card-more {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 18px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--brand-2);
}
.card-more svg { transition: transform .3s var(--ease); }
a.card:hover .card-more svg { transform: translateX(4px); }

/* ---------- Contact form ---------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 24px;
  align-items: start;
}
.contact-form { display: grid; gap: 16px; align-content: start; }
.field { display: grid; gap: 7px; }
.field label { font-size: .85rem; font-weight: 600; color: var(--text-soft); }
.field input,
.field textarea {
  width: 100%;
  padding: 13px 16px;
  border-radius: 13px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: inherit;
  font-size: .96rem;
  resize: vertical;
  transition: border-color .25s, box-shadow .25s;
}
.field input::placeholder,
.field textarea::placeholder { color: var(--muted); }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand-2);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 22%, transparent);
}
.field textarea { min-height: 130px; }
.contact-form .btn { width: 100%; justify-content: center; border: none; margin-top: 2px; }
.contact-form .btn:disabled { opacity: .7; cursor: not-allowed; transform: none; }
.form-status { font-size: .9rem; min-height: 1.2em; margin: 0; }
.form-status.ok { color: var(--accent); }
.form-status.err { color: #ff6b6b; }
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.contact-channels { display: flex; flex-direction: column; gap: 12px; }
.contact-channels .contact-card { background: var(--bg-elev); }

/* ---------- Case study pages ---------- */
.cs-hero { padding: clamp(50px, 9vh, 96px) 0 36px; }
.cs-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  margin-bottom: 28px;
  transition: color .25s var(--ease), transform .25s var(--ease);
}
.cs-back:hover { color: var(--text); transform: translateX(-4px); }
.cs-back svg { transition: transform .25s var(--ease); }
.cs-tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--brand-2);
  padding: 6px 13px;
  border-radius: 100px;
  background: var(--grad-soft);
  border: 1px solid var(--border);
  margin-bottom: 18px;
}
.cs-hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -.03em;
  margin-bottom: 18px;
  max-width: 16ch;
}
.cs-lead { font-size: clamp(1.02rem, 1.5vw, 1.22rem); color: var(--text-soft); max-width: 660px; }
.cs-meta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.cs-meta .m {
  padding: 13px 19px;
  border-radius: 15px;
  background: var(--surface);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.cs-meta .m small {
  display: block;
  color: var(--muted);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 3px;
}
.cs-meta .m b { font-weight: 600; font-size: .96rem; }

.cs-body { padding: 24px 0 20px; }
.cs-block { max-width: 760px; margin: 0 auto 52px; }
.cs-block h2 { font-size: clamp(1.45rem, 3vw, 1.8rem); margin-bottom: 16px; }
.cs-block > p { color: var(--text-soft); font-size: 1.06rem; margin-bottom: 16px; }
.cs-block > p:last-child { margin-bottom: 0; }

.cs-steps { display: grid; gap: 14px; }
.cs-step {
  display: flex;
  gap: 18px;
  padding: 22px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: transform .3s var(--ease), border-color .3s;
}
.cs-step:hover { transform: translateX(5px); border-color: var(--border-strong); }
.cs-step .num {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: 11px;
  background: var(--grad);
  color: #fff;
  font-weight: 700;
  font-size: .95rem;
}
.cs-step h3 { font-size: 1.05rem; margin-bottom: 4px; }
.cs-step p { color: var(--muted); font-size: .95rem; margin: 0; }

.cs-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.cs-tags span {
  padding: 8px 15px;
  border-radius: 100px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: .9rem;
  color: var(--text-soft);
}
.cs-callout {
  padding: 24px 26px;
  border-radius: var(--radius);
  background: var(--grad-soft);
  border: 1px solid var(--border);
}
.cs-callout p { margin: 0; color: var(--text); font-size: 1.05rem; }

.cs-results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 8px;
}
.cs-result {
  padding: 22px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: transform .3s var(--ease), border-color .3s;
}
.cs-result:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.cs-result .label {
  display: block;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -.01em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
}
.cs-result p { color: var(--muted); font-size: .92rem; margin: 0; }
@media (max-width: 720px) { .cs-results { grid-template-columns: 1fr; } }

.cs-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  max-width: 760px;
  margin: 56px auto 0;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}
.cs-nav a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 210px;
  padding: 16px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  transition: transform .3s var(--ease), border-color .3s;
}
.cs-nav a:hover { transform: translateY(-3px); border-color: var(--border-strong); }
.cs-nav a small { color: var(--muted); font-size: .78rem; font-weight: 500; }
.cs-nav a.next { text-align: right; margin-left: auto; }

.cs-cta { text-align: center; max-width: 600px; margin: 64px auto 0; }
.cs-cta h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); margin-bottom: 12px; }
.cs-cta p { color: var(--muted); margin-bottom: 24px; }

/* ---------- Cookie consent banner ---------- */
.cookie-banner {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translate(-50%, 24px);
  z-index: 1500;
  width: min(680px, calc(100% - 32px));
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 16px 20px;
  border-radius: 18px;
  background: color-mix(in srgb, var(--bg-elev) 88%, transparent);
  border: 1px solid var(--border-strong);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  backdrop-filter: blur(20px) saturate(160%);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s var(--ease), transform .35s var(--ease);
}
.cookie-banner.show { opacity: 1; transform: translate(-50%, 0); pointer-events: auto; }
.cookie-banner p { margin: 0; flex: 1 1 280px; font-size: .9rem; color: var(--text-soft); }
.cookie-banner a { color: var(--brand-2); font-weight: 600; text-decoration: none; }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.cookie-banner .btn { padding: 10px 18px; font-size: .88rem; }
@media (max-width: 520px) {
  .cookie-actions { width: 100%; }
  .cookie-actions .btn { flex: 1; justify-content: center; }
}

/* ---------- Testimonials ---------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 36px;
}
.testimonial {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}
.testimonial .quote { font-size: 1.04rem; color: var(--text-soft); line-height: 1.75; margin-bottom: 22px; }
.testimonial .person { display: flex; align-items: center; gap: 14px; }
.testimonial .avatar {
  width: 46px; height: 46px;
  flex-shrink: 0;
  border-radius: 50%;
  display: grid; place-items: center;
  font-weight: 700; font-size: .95rem;
  color: #fff;
  background: var(--grad);
}
.testimonial .person b { display: block; font-size: .98rem; }
.testimonial .person small { color: var(--muted); font-size: .85rem; }
.testimonials-cta { text-align: center; }
@media (max-width: 720px) { .testimonials-grid { grid-template-columns: 1fr; } }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 0 auto; display: grid; gap: 12px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  overflow: hidden;
  transition: border-color .25s;
}
.faq-item[open] { border-color: var(--border-strong); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  font-weight: 600;
  font-size: 1.02rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  line-height: 1;
  color: var(--brand-2);
  transition: transform .3s var(--ease);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--muted); padding: 0 24px 20px; margin: 0; line-height: 1.7; }

/* ---------- Newsletter ---------- */
.newsletter-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
  padding: clamp(28px, 5vw, 48px);
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  position: relative;
  overflow: hidden;
}
.newsletter-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(28rem 16rem at 100% 0%, rgba(109, 93, 252, .16), transparent 70%);
  pointer-events: none;
}
.newsletter-card > * { position: relative; }
.newsletter-text { flex: 1 1 280px; }
.newsletter-text h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 8px; }
.newsletter-text p { color: var(--muted); margin: 0; }
.newsletter-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; flex: 1 1 320px; max-width: 460px; }
.newsletter-form input[type=email] {
  flex: 1 1 200px;
  padding: 13px 16px;
  border-radius: 13px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: inherit;
  font-size: .95rem;
  transition: border-color .25s, box-shadow .25s;
}
.newsletter-form input[type=email]:focus {
  outline: none;
  border-color: var(--brand-2);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 22%, transparent);
}
.newsletter-form .btn { border: none; }
.newsletter-form .form-status { flex-basis: 100%; margin: 0; font-size: .85rem; min-height: 1em; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .contact-layout { grid-template-columns: 1fr; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; }
  .portrait { width: min(280px, 70%); }
  .chip-1 { left: 0; }
  .chip-2 { right: 0; }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .menu-toggle { display: flex; }
  .nav {
    position: fixed;
    inset: 72px 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 18px 5%;
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    -webkit-backdrop-filter: blur(24px);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform .3s var(--ease), opacity .3s;
  }
  .nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav a { padding: 13px 16px; font-size: 1rem; }
  .nav a.active::after { display: none; }
  .theme-btn { margin: 6px 0 0; width: 100%; height: 44px; }

  .cards { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { flex: 1; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}