/* AI Yetu — Knowledge made accessible
   Visual theme: light spreading through darkness — knowledge as illumination.
   Palette mixes warm amber (the spark of an idea) with cool teal/indigo
   (clarity, structure) over a deep night canvas. */

:root {
  --bg: #07090f;
  --bg-2: #0b1020;
  --bg-elevated: #11172a;
  --surface: #151c33;
  --surface-2: #1b2440;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  --text: #f1f3f9;
  --text-muted: #97a0b8;
  --text-soft: #c7cee0;

  --accent: #5eead4;          /* clarity teal */
  --accent-2: #818cf8;        /* structure indigo */
  --accent-warm: #fbbf24;     /* spark amber */
  --accent-pink: #f472b6;     /* discovery pink */

  --accent-dim: rgba(94, 234, 212, 0.14);
  --accent-glow: rgba(94, 234, 212, 0.45);
  --warm-dim: rgba(251, 191, 36, 0.14);
  --warm-glow: rgba(251, 191, 36, 0.4);
  --indigo-dim: rgba(129, 140, 248, 0.16);

  --grad-spark: linear-gradient(135deg, #fbbf24 0%, #f472b6 50%, #818cf8 100%);
  --grad-clarity: linear-gradient(135deg, #5eead4 0%, #818cf8 100%);
  --grad-warm-cool: linear-gradient(120deg, #fbbf24, #5eead4 60%, #818cf8);

  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Outfit", var(--font-sans);

  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --max: 1180px;
  --header-h: 72px;

  --shadow-soft: 0 20px 60px -20px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 30px 80px -30px rgba(94, 234, 212, 0.35);

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

::selection {
  background: rgba(251, 191, 36, 0.35);
  color: #fff;
}

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 3px solid var(--bg);
  border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-2); }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  position: relative;
}

/* Ambient background — subtle aurora light */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(60% 40% at 12% -5%, rgba(251, 191, 36, 0.10), transparent 60%),
    radial-gradient(50% 35% at 90% 0%, rgba(129, 140, 248, 0.14), transparent 60%),
    radial-gradient(60% 50% at 50% 110%, rgba(94, 234, 212, 0.10), transparent 60%),
    var(--bg);
  pointer-events: none;
}

/* Faint dot grid representing connected knowledge */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  pointer-events: none;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--accent-warm);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.75rem 1rem;
  background: var(--accent-warm);
  color: #1a1207;
  font-weight: 600;
  z-index: 100;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus { left: 0; top: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: rgba(7, 9, 15, 0.65);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
}

.header-inner {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.logo:hover { text-decoration: none; }

.logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--grad-spark);
  position: relative;
  display: inline-grid;
  place-items: center;
  box-shadow: 0 6px 20px -6px rgba(251, 191, 36, 0.6);
  flex-shrink: 0;
}

.logo-mark::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 4px;
  background: var(--bg);
}

.logo-mark::before {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 2px;
  background: var(--grad-spark);
  z-index: 1;
}

.logo span {
  background: var(--grad-warm-cool);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font: inherit;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav a {
  position: relative;
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color 0.15s ease, background 0.15s ease;
}

.nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  text-decoration: none;
}

.nav a[aria-current="page"] {
  color: var(--text);
}

.nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 0.25rem;
  height: 2px;
  background: var(--grad-warm-cool);
  border-radius: 2px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out), background 0.2s ease;
  position: relative;
  overflow: hidden;
}

.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--grad-spark);
  color: #1a1207;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    0 10px 30px -10px rgba(244, 114, 182, 0.55),
    0 6px 20px -6px rgba(251, 191, 36, 0.4);
}

.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.45) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s var(--ease-out);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.6),
    0 16px 40px -10px rgba(244, 114, 182, 0.6),
    0 10px 30px -8px rgba(251, 191, 36, 0.5);
}

.btn-primary:hover::before { transform: translateX(100%); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.btn .btn-arrow {
  transition: transform 0.2s var(--ease-out);
}

.btn:hover .btn-arrow { transform: translateX(3px); }

main {
  flex: 1;
  padding-bottom: 4rem;
}

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
}

/* ---------- Hero ---------- */
.hero {
  padding: clamp(3rem, 9vw, 6rem) 0 clamp(4rem, 10vw, 6rem);
  text-align: center;
  position: relative;
  isolation: isolate;
}

.hero-glow {
  position: absolute;
  z-index: -1;
  pointer-events: none;
  filter: blur(80px);
  opacity: 0.65;
}

.hero-glow.g1 {
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.55), transparent 65%);
  top: -120px; left: 50%;
  transform: translateX(-65%);
  animation: float 14s ease-in-out infinite;
}

.hero-glow.g2 {
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(129, 140, 248, 0.5), transparent 65%);
  top: 60px; right: -80px;
  animation: float 18s ease-in-out infinite reverse;
}

.hero-glow.g3 {
  width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(94, 234, 212, 0.45), transparent 65%);
  bottom: -120px; left: -80px;
  animation: float 16s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateX(-65%) translateY(0); }
  50% { transform: translateX(-65%) translateY(40px); }
}

.hero-glow.g2 { animation-name: floatR; }
@keyframes floatR {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-40px); }
}
.hero-glow.g3 { animation-name: floatL; }
@keyframes floatL {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20px, -30px); }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-strong);
  padding: 0.45rem 1rem 0.45rem 0.55rem;
  border-radius: 999px;
  margin-bottom: 1.75rem;
  backdrop-filter: blur(8px);
}

.hero-badge .dot {
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--accent-warm);
  box-shadow: 0 0 0 4px rgba(251, 191, 36, 0.18), 0 0 14px rgba(251, 191, 36, 0.7);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.4); }
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 6vw, 4.25rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin: 0 0 1.5rem;
  max-width: 18ch;
  margin-left: auto;
  margin-right: auto;
}

.hero h1 .shine {
  background: var(--grad-warm-cool);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shine 6s linear infinite;
  display: inline-block;
}

@keyframes shine {
  0% { background-position: 0% 0; }
  100% { background-position: 200% 0; }
}

.hero-lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-soft);
  max-width: 38rem;
  margin: 0 auto 2.25rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  justify-content: center;
  margin-bottom: 3rem;
}

/* Knowledge graph visualization */
.knowledge-graph {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  position: relative;
}

.knowledge-graph svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}

.kg-link {
  stroke: rgba(94, 234, 212, 0.35);
  stroke-width: 1.2;
  fill: none;
  stroke-dasharray: 4 5;
  animation: dash 14s linear infinite;
}

@keyframes dash {
  to { stroke-dashoffset: -200; }
}

.kg-node {
  fill: var(--bg-elevated);
  stroke: rgba(255, 255, 255, 0.18);
  stroke-width: 1.5;
}

.kg-node.warm { stroke: var(--accent-warm); filter: drop-shadow(0 0 12px rgba(251, 191, 36, 0.7)); }
.kg-node.teal { stroke: var(--accent); filter: drop-shadow(0 0 12px rgba(94, 234, 212, 0.6)); }
.kg-node.indigo { stroke: var(--accent-2); filter: drop-shadow(0 0 12px rgba(129, 140, 248, 0.6)); }
.kg-node.pink { stroke: var(--accent-pink); filter: drop-shadow(0 0 12px rgba(244, 114, 182, 0.5)); }

.kg-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  fill: var(--text);
  text-anchor: middle;
}

.kg-orbit {
  transform-origin: center;
  animation: orbit-pulse 3s ease-in-out infinite;
}

@keyframes orbit-pulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

.kg-spark {
  fill: var(--accent-warm);
  filter: drop-shadow(0 0 8px var(--accent-warm));
  animation: travel 6s ease-in-out infinite;
}

.kg-spark.s2 { animation-delay: -2s; animation-duration: 8s; fill: var(--accent); filter: drop-shadow(0 0 8px var(--accent)); }
.kg-spark.s3 { animation-delay: -4s; animation-duration: 7s; fill: var(--accent-pink); filter: drop-shadow(0 0 8px var(--accent-pink)); }

@keyframes travel {
  0% { offset-distance: 0%; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { offset-distance: 100%; opacity: 0; }
}

/* ---------- Sections ---------- */
.section {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
  position: relative;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-warm);
  margin-bottom: 0.85rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0 0 0.85rem;
  max-width: 22ch;
}

.section-intro {
  color: var(--text-soft);
  max-width: 44rem;
  margin: 0 0 3rem;
  font-size: 1.0625rem;
}

.section-head--center {
  text-align: center;
}

.section-head--center .section-title,
.section-head--center .section-intro {
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Stats strip ---------- */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 0 auto;
  max-width: 1000px;
  backdrop-filter: blur(12px);
}

.stats-strip > div {
  background: rgba(11, 16, 32, 0.7);
  padding: 1.75rem 1.5rem;
  text-align: center;
}

.stat-num {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  font-weight: 700;
  background: var(--grad-warm-cool);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-label {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* ---------- Cards / grid ---------- */
.grid-3 {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  position: relative;
  background: linear-gradient(180deg, rgba(27, 36, 64, 0.7), rgba(17, 23, 42, 0.7));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.85rem;
  transition: transform 0.3s var(--ease-out), border-color 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  padding: 1px;
  background: linear-gradient(135deg, transparent 30%, var(--accent) 50%, transparent 70%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.7);
}

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

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 1.25rem;
  position: relative;
  background: var(--accent-dim);
  border: 1px solid rgba(94, 234, 212, 0.3);
  color: var(--accent);
  flex-shrink: 0;
}

.card:nth-child(2) .card-icon {
  background: var(--warm-dim);
  border-color: rgba(251, 191, 36, 0.35);
  color: var(--accent-warm);
}

.card:nth-child(3) .card-icon {
  background: var(--indigo-dim);
  border-color: rgba(129, 140, 248, 0.35);
  color: var(--accent-2);
}

.card-icon svg { width: 24px; height: 24px; }

.card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9625rem;
}

/* ---------- How it works ---------- */
.steps {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  counter-reset: step;
}

.step {
  position: relative;
  padding: 2rem 1.75rem 1.75rem;
  background: rgba(17, 23, 42, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  counter-increment: step;
  transition: transform 0.3s var(--ease-out), border-color 0.3s ease;
}

.step:hover {
  transform: translateY(-3px);
  border-color: rgba(251, 191, 36, 0.35);
}

.step::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  background: var(--grad-warm-cool);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.55;
  letter-spacing: -0.04em;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
  max-width: 14ch;
}

.step p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ---------- Manifesto block (knowledge-accessible theme) ---------- */
.manifesto {
  position: relative;
  padding: clamp(2.5rem, 5vw, 4rem);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background:
    radial-gradient(60% 100% at 0% 0%, rgba(251, 191, 36, 0.18), transparent 60%),
    radial-gradient(60% 100% at 100% 100%, rgba(129, 140, 248, 0.22), transparent 60%),
    linear-gradient(180deg, rgba(21, 28, 51, 0.9), rgba(11, 16, 32, 0.9));
  border: 1px solid var(--border-strong);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: center;
}

@media (max-width: 800px) {
  .manifesto { grid-template-columns: 1fr; gap: 2rem; }
}

.manifesto h2 {
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0 0 1rem;
}

.manifesto p {
  color: var(--text-soft);
  margin: 0 0 0.85rem;
  font-size: 1.025rem;
}

.manifesto p:last-of-type { margin-bottom: 0; }

.manifesto .signature {
  margin-top: 1.25rem;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.8125rem;
  color: var(--accent-warm);
}

/* Right-side visual: opening book of light */
.book-of-light {
  position: relative;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}

.book-of-light svg {
  width: 100%;
  height: 100%;
  max-width: 320px;
  overflow: visible;
}

.bol-ray {
  stroke: var(--accent-warm);
  stroke-width: 1.5;
  stroke-linecap: round;
  opacity: 0.7;
  transform-origin: center;
  animation: rays 4s ease-in-out infinite;
}

@keyframes rays {
  0%, 100% { opacity: 0.4; stroke-width: 1; }
  50% { opacity: 0.95; stroke-width: 2; }
}

.bol-page-l, .bol-page-r {
  fill: rgba(94, 234, 212, 0.06);
  stroke: rgba(94, 234, 212, 0.4);
  stroke-width: 1.5;
}

.bol-page-r { fill: rgba(129, 140, 248, 0.08); stroke: rgba(129, 140, 248, 0.45); }

.bol-core {
  fill: var(--accent-warm);
  filter: drop-shadow(0 0 18px var(--accent-warm));
  animation: corePulse 2.6s ease-in-out infinite;
}

@keyframes corePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.18); }
}

/* ---------- Marquee of disciplines ---------- */
.marquee {
  position: relative;
  margin: 4rem 0 2rem;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
}

.marquee-track {
  display: flex;
  gap: 2.5rem;
  width: max-content;
  animation: scroll 38s linear infinite;
}

.marquee-track > span {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  letter-spacing: -0.02em;
  color: rgba(255, 255, 255, 0.18);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 2.5rem;
}

.marquee-track > span::after {
  content: "✦";
  font-size: 0.85em;
  background: var(--grad-warm-cool);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.85;
}

@keyframes scroll {
  to { transform: translateX(-50%); }
}

/* ---------- CTA band ---------- */
.cta-band {
  position: relative;
  margin-top: 3rem;
  padding: clamp(2.5rem, 6vw, 4rem);
  border-radius: var(--radius-lg);
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 0%, rgba(251, 191, 36, 0.2), transparent 50%),
    radial-gradient(circle at 80% 100%, rgba(129, 140, 248, 0.25), transparent 50%),
    linear-gradient(135deg, rgba(21, 28, 51, 0.95), rgba(11, 16, 32, 0.95));
  border: 1px solid var(--border-strong);
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  pointer-events: none;
}

.cta-band > * { position: relative; }

.cta-band h2 {
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  margin: 0 0 0.85rem;
  letter-spacing: -0.025em;
  line-height: 1.15;
  max-width: 22ch;
  margin-left: auto;
  margin-right: auto;
}

.cta-band p {
  color: var(--text-soft);
  margin: 0 auto 1.85rem;
  max-width: 38rem;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 1.5rem 1.75rem;
  margin-top: auto;
  background: rgba(7, 9, 15, 0.6);
  backdrop-filter: blur(8px);
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-inner p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-links a:hover { color: var(--accent); }

.footer-tag {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ---------- Page header ---------- */
.page-header {
  padding: clamp(3rem, 7vw, 4.5rem) 0 2rem;
  position: relative;
  text-align: center;
}

.page-header .section-eyebrow {
  margin-bottom: 1rem;
}

.page-header h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 5vw, 3.25rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 auto 1rem;
  max-width: 18ch;
}

.page-header h1 .shine {
  background: var(--grad-warm-cool);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shine 6s linear infinite;
  display: inline-block;
}

.page-header p {
  margin: 0 auto;
  color: var(--text-soft);
  max-width: 42rem;
  font-size: 1.05rem;
}

/* ---------- Contact ---------- */
.contact-layout {
  display: grid;
  gap: 2rem;
  grid-template-columns: 0.85fr 1.15fr;
  align-items: start;
  padding-bottom: 4rem;
}

@media (max-width: 800px) {
  .contact-layout { grid-template-columns: 1fr; }
}

.contact-aside {
  background: linear-gradient(180deg, rgba(27, 36, 64, 0.7), rgba(17, 23, 42, 0.7));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.85rem;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.contact-aside::before {
  content: "";
  position: absolute;
  top: -60px; right: -60px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.25), transparent 65%);
  pointer-events: none;
}

.contact-aside h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 1.25rem;
  letter-spacing: -0.01em;
}

.contact-list { list-style: none; margin: 0; padding: 0; }

.contact-list > div {
  padding: 1rem 0;
  border-bottom: 1px dashed var(--border);
}

.contact-list > div:last-child { border-bottom: none; padding-bottom: 0; }
.contact-list > div:first-child { padding-top: 0; }

.contact-list dt {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.contact-list dd { margin: 0; font-weight: 500; }
.contact-list dd a { color: var(--accent-warm); }
.contact-list dd a:hover { color: var(--accent); }

.contact-form-wrap {
  background: linear-gradient(180deg, rgba(21, 28, 51, 0.8), rgba(11, 16, 32, 0.8));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.75rem, 4vw, 2.25rem);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.contact-form-wrap::before {
  content: "";
  position: absolute;
  bottom: -80px; left: -80px;
  width: 280px; height: 280px;
  background: radial-gradient(circle, rgba(94, 234, 212, 0.2), transparent 65%);
  pointer-events: none;
}

.contact-form-wrap > * { position: relative; }

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

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}

.form-group { margin-bottom: 1.25rem; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
  letter-spacing: 0.01em;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.85rem 1rem;
  font: inherit;
  color: var(--text);
  background: rgba(7, 9, 15, 0.55);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-dim);
  background: rgba(7, 9, 15, 0.85);
}

.form-group textarea { min-height: 150px; resize: vertical; }

.form-note {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 1rem 0 0;
}

/* ---------- Clients ---------- */
.client-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  padding-bottom: 3rem;
}

.client-card {
  position: relative;
  background: linear-gradient(180deg, rgba(27, 36, 64, 0.7), rgba(17, 23, 42, 0.7));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  transition: transform 0.3s var(--ease-out), border-color 0.3s ease, box-shadow 0.3s ease;
  backdrop-filter: blur(10px);
  overflow: hidden;
}

.client-card::after {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 120px; height: 120px;
  background: radial-gradient(circle at top right, rgba(251, 191, 36, 0.18), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.client-card:hover {
  transform: translateY(-3px);
  border-color: rgba(251, 191, 36, 0.3);
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.6);
}

.client-card:hover::after { opacity: 1; }

.client-avatar {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: #1a1207;
  background: var(--grad-spark);
  box-shadow: 0 10px 24px -10px rgba(244, 114, 182, 0.5);
  position: relative;
}

.client-card:nth-child(2n) .client-avatar { background: var(--grad-clarity); color: #042f2e; box-shadow: 0 10px 24px -10px rgba(94, 234, 212, 0.6); }
.client-card:nth-child(3n) .client-avatar { background: linear-gradient(135deg, #818cf8, #f472b6); color: #1a0f30; }
.client-card:nth-child(4n) .client-avatar { background: linear-gradient(135deg, #5eead4, #fbbf24); color: #042f2e; }

.client-body { flex: 1; min-width: 0; }

.client-body h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 0.3rem;
  letter-spacing: -0.01em;
}

.client-meta {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-warm);
  margin-bottom: 0.6rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.client-body p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--stagger > * {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.reveal--stagger.is-visible > * { opacity: 1; transform: translateY(0); }
.reveal--stagger.is-visible > *:nth-child(1) { transition-delay: 0.05s; }
.reveal--stagger.is-visible > *:nth-child(2) { transition-delay: 0.15s; }
.reveal--stagger.is-visible > *:nth-child(3) { transition-delay: 0.25s; }
.reveal--stagger.is-visible > *:nth-child(4) { transition-delay: 0.35s; }
.reveal--stagger.is-visible > *:nth-child(5) { transition-delay: 0.45s; }
.reveal--stagger.is-visible > *:nth-child(6) { transition-delay: 0.55s; }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal, .reveal--stagger > * { opacity: 1; transform: none; }
}

/* ---------- Mobile ---------- */
@media (max-width: 720px) {
  .nav-toggle { display: block; }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.5rem 1.25rem;
    background: rgba(11, 16, 32, 0.95);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    gap: 0;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s var(--ease-out), opacity 0.25s var(--ease-out), visibility 0.25s;
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav a { padding: 0.85rem 1rem; }

  .nav a[aria-current="page"]::after { left: 1rem; right: auto; width: 24px; }
}