/* ============================================================
   GigaBop — design system 0.1
   ============================================================ */

:root {
  /* surface */
  --bg: #0a0a0a;
  --bg-2: #131313;
  --line: rgba(255,255,255,.08);
  --line-strong: rgba(255,255,255,.18);

  /* type */
  --ink: #fafafa;
  --ink-2: #b3b3b3;
  --ink-3: #6a6a6a;

  /* brand */
  --neon-purple: #a855f7;
  --neon-pink:   #ec4899;
  --neon-lime:   #bef264;
  --neon-cyan:   #22d3ee;
  --neon-yellow: #facc15;

  /* core gradient */
  --grad-1: linear-gradient(120deg, var(--neon-pink), var(--neon-purple) 50%, var(--neon-cyan));
  --grad-warm: linear-gradient(120deg, var(--neon-yellow), var(--neon-pink));

  /* type */
  --font-display: 'Unbounded', 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* rhythm */
  --container: 1280px;
  --pad-x: clamp(20px, 4vw, 64px);
  --radius: 18px;
}

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

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

/* scroll progress bar */
.scrollbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 1001;
  background: transparent;
  pointer-events: none;
}
.scrollbar span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--neon-pink), var(--neon-purple), var(--neon-lime));
  box-shadow: 0 0 12px rgba(168,85,247,.7);
  transform-origin: left;
  transition: width .08s linear;
}

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

::selection { background: var(--neon-lime); color: var(--bg); }

/* ============================================================
   interactive bg canvas
   ============================================================ */

.bg-canvas {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  width: 100vw; height: 100vh;
}

/* click ripple */
.ripples {
  position: fixed; inset: 0; z-index: 998; pointer-events: none;
  overflow: hidden;
}
.ripple {
  position: absolute;
  width: 12px; height: 12px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  border: 2px solid var(--neon-lime);
  box-shadow: 0 0 24px var(--neon-lime), inset 0 0 12px var(--neon-lime);
  opacity: .9;
  animation: ripple .9s cubic-bezier(.2,.7,.3,1) forwards;
}
@keyframes ripple {
  to { width: 220px; height: 220px; opacity: 0; border-width: 1px; }
}

/* push sections above canvas */
.nav, .hero, .how, .genres, .cases, .faq, .anti, .bigcta, .foot { position: relative; z-index: 2; }

/* ============================================================
   noise & cursor
   ============================================================ */

.noise {
  position: fixed; inset: 0; z-index: 1000; pointer-events: none;
  opacity: .04;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
  mix-blend-mode: overlay;
}

/* ============================================================
   nav
   ============================================================ */

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px var(--pad-x);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  background: rgba(10,10,10,.55);
  border-bottom: 1px solid var(--line);
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  border-radius: 10px;
  background: var(--grad-1);
  color: var(--bg);
  font-weight: 700;
  font-family: var(--font-display);
  font-size: 16px;
  animation: spin 18s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.logo-text {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: .02em;
}
.logo-text.small { font-size: 18px; }

.logo-eq {
  display: inline-flex;
  align-items: flex-end;
  gap: 2px;
  height: 18px;
  margin-left: 4px;
}
.logo-eq i {
  display: block;
  width: 3px;
  background: var(--neon-lime);
  border-radius: 2px;
  box-shadow: 0 0 6px var(--neon-lime);
  animation: eq 1.1s ease-in-out infinite;
}
.logo-eq i:nth-child(1) { animation-delay: .0s; height: 30%; }
.logo-eq i:nth-child(2) { animation-delay: .15s; height: 80%; background: var(--neon-pink); box-shadow: 0 0 6px var(--neon-pink); }
.logo-eq i:nth-child(3) { animation-delay: .3s; height: 50%; background: var(--neon-cyan); box-shadow: 0 0 6px var(--neon-cyan); }
.logo-eq i:nth-child(4) { animation-delay: .45s; height: 65%; }
@keyframes eq {
  0%, 100% { transform: scaleY(.4); }
  50%      { transform: scaleY(1); }
}
@media (max-width: 480px) { .logo-eq { display: none; } }

.nav-links {
  display: flex; align-items: center; gap: 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-2);
}
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  padding: 8px 14px;
  background: var(--ink);
  color: var(--bg) !important;
  border-radius: 999px;
  font-weight: 700;
  transition: transform .2s, background .2s;
}
.nav-cta:hover { background: var(--neon-lime); transform: translateY(-1px); }

@media (max-width: 720px) {
  .nav-links a:not(.nav-cta) { display: none; }
}

/* ============================================================
   hero
   ============================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  padding: 140px var(--pad-x) 80px;
  display: flex; align-items: center;
  overflow: hidden;
}
.hero-inner {
  position: relative; z-index: 2;
  width: 100%; max-width: var(--container); margin: 0 auto;
  display: flex; flex-direction: column; gap: 28px;
}

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  width: max-content;
  padding: 8px 16px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-2);
  letter-spacing: .03em;
}
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  box-shadow: 0 0 12px currentColor;
}
.dot-pink { background: var(--neon-pink); color: var(--neon-pink); }
.dot-lime { background: var(--neon-lime); color: var(--neon-lime); }

.hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(72px, 17vw, 240px);
  line-height: .82;
  letter-spacing: -.04em;
  text-transform: uppercase;
  display: flex; flex-direction: column;
  margin-top: 12px;
}
.hero-title .word {
  position: relative;
  display: inline-block;
  background: var(--grad-1);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 30px rgba(168,85,247,.2));
}
.hero-title .word::after {
  content: attr(data-text);
  position: absolute; left: 0; top: 0;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255,255,255,.12);
  pointer-events: none;
  transform: translate(8px, 8px);
  z-index: -1;
}
.hero-title .word:nth-child(2) {
  margin-left: clamp(40px, 8vw, 120px);
}

.hero-sub {
  font-size: clamp(18px, 2.2vw, 24px);
  color: var(--ink-2);
  max-width: 560px;
  margin-top: 8px;
}

.hero-cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 16px; }

.cta {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 18px 26px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .01em;
  transition: transform .2s cubic-bezier(.4,.7,.4,1), background .2s, color .2s, box-shadow .2s;
  will-change: transform;
}
.cta-primary {
  background: var(--ink);
  color: var(--bg);
  box-shadow: 0 0 0 0 rgba(190,242,100,0);
}
.cta-primary:hover {
  background: var(--neon-lime);
  box-shadow: 0 10px 30px -10px rgba(190,242,100,.6);
}
.cta-ghost {
  border: 1px solid var(--line-strong);
  color: var(--ink);
}
.cta-ghost:hover { border-color: var(--neon-lime); color: var(--neon-lime); }

.hero-meta {
  display: flex; gap: clamp(20px, 4vw, 80px); flex-wrap: wrap;
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.meta-item { display: flex; flex-direction: column; gap: 4px; }
.meta-num {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 60px);
  line-height: 1;
  background: var(--grad-warm);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.meta-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-3);
  text-transform: lowercase;
}

/* marquee */
.marquee {
  margin: 60px calc(var(--pad-x) * -1) 0;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: linear-gradient(90deg, rgba(168,85,247,.07), rgba(236,72,153,.07));
}
.marquee-track {
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--ink-2);
  animation: scroll 40s linear infinite;
}
@keyframes scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ============================================================
   sections
   ============================================================ */

.section-head {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 var(--pad-x);
  display: flex; flex-direction: column; gap: 8px;
}
.section-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--neon-pink);
  letter-spacing: .15em;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 7vw, 96px);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: -.01em;
}
.section-sub {
  color: var(--ink-2);
  max-width: 520px;
  font-size: 18px;
}

/* how */
.how { padding: 100px 0; border-top: 1px solid var(--line); }
.steps {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
@media (max-width: 900px) {
  .steps { grid-template-columns: 1fr; }
}
.step {
  position: relative;
  padding: 32px 28px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex; flex-direction: column; gap: 14px;
  min-height: 240px;
  transition: transform .35s cubic-bezier(.4,.7,.4,1), border-color .35s, background .35s;
  will-change: transform;
}
.step:hover { border-color: var(--neon-lime); background: #161616; }
.step-num {
  font-family: var(--font-display);
  font-size: 84px;
  line-height: .8;
  background: var(--grad-1);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.step h3 {
  font-family: var(--font-display);
  font-size: 28px;
  text-transform: uppercase;
  font-weight: 400;
}
.step p { color: var(--ink-2); }
.step-tag {
  position: absolute; top: 28px; right: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* genres */
.genres { padding: 100px 0; border-top: 1px solid var(--line); }
.genre-grid {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}
@media (max-width: 1024px) { .genre-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px)  { .genre-grid { grid-template-columns: repeat(2, 1fr); } }

.genre {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; flex-direction: column; gap: 10px;
  min-height: 200px;
  transition: transform .3s cubic-bezier(.4,.7,.4,1), border-color .3s;
  will-change: transform;
}
.genre::before {
  content: "";
  position: absolute; inset: -1px;
  background: linear-gradient(135deg, var(--g1), var(--g2));
  opacity: 0;
  transition: opacity .35s;
  z-index: -1;
  border-radius: inherit;
}
.genre:hover {
  border-color: transparent;
  background: var(--bg);
}
.genre:hover::before { opacity: .85; }
.genre:hover h4, .genre:hover p, .genre:hover .genre-bpm { color: var(--bg); }
.genre-emoji {
  font-size: 38px;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,.5));
}
.genre h4 {
  font-family: var(--font-display);
  font-size: 22px;
  text-transform: uppercase;
  font-weight: 400;
  letter-spacing: .01em;
  transition: color .35s;
}
.genre p { color: var(--ink-2); font-size: 14px; transition: color .35s; }
.genre-bpm {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: .15em;
  text-transform: uppercase;
  transition: color .35s;
}

/* cases */
.cases { padding: 100px 0; border-top: 1px solid var(--line); }
.case-grid {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 900px) { .case-grid { grid-template-columns: 1fr; } }
.case {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  display: flex; flex-direction: column; gap: 16px;
  min-height: 180px;
  transition: transform .35s, border-color .35s;
}
.case:hover { border-color: var(--neon-pink); }
.case blockquote {
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.2;
  font-weight: 400;
  text-transform: lowercase;
}
.case figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: .08em;
  margin-top: auto;
}

/* ideas (random brief generator) */
.ideas { padding: 100px 0; border-top: 1px solid var(--line); }
.ideas-stage {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: flex; flex-direction: column;
  gap: 18px;
}
.ideas-card {
  position: relative;
  padding: 40px 36px;
  background:
    radial-gradient(circle at 0% 0%, rgba(168,85,247,.18), transparent 60%),
    radial-gradient(circle at 100% 100%, rgba(190,242,100,.12), transparent 50%),
    var(--bg-2);
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  min-height: 220px;
  display: flex; flex-direction: column; gap: 14px;
  overflow: hidden;
}
.ideas-meta {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: .1em;
  text-transform: uppercase;
}
.ideas-kind { color: var(--neon-pink); }
.ideas-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px, 3.5vw, 38px);
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--ink);
  text-transform: lowercase;
  flex: 1;
}
.ideas-tag {
  display: inline-flex;
  width: max-content;
  padding: 8px 16px;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-2);
  letter-spacing: .05em;
}
.ideas-controls {
  display: flex; gap: 10px; flex-wrap: wrap;
}
.ideas-card.is-rolling .ideas-text {
  animation: rollOut .25s cubic-bezier(.4,.7,.4,1);
}
@keyframes rollOut {
  0%   { opacity: 1; transform: translateY(0) }
  50%  { opacity: 0; transform: translateY(-12px) }
  51%  { opacity: 0; transform: translateY(12px) }
  100% { opacity: 1; transform: translateY(0) }
}

/* faq */
.faq { padding: 100px 0; border-top: 1px solid var(--line); }
.faq-list {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: flex; flex-direction: column;
  gap: 8px;
}
.faq-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-2);
  overflow: hidden;
  transition: border-color .25s;
}
.faq-item:hover, .faq-item[open] { border-color: var(--neon-cyan); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 26px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 18px;
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: .005em;
  position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 24px;
  color: var(--neon-cyan);
  flex-shrink: 0;
  transition: transform .3s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p {
  padding: 0 26px 24px;
  color: var(--ink-2);
  max-width: 640px;
}

/* anti — что не делаем */
.anti {
  padding: 100px 0;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(800px circle at 80% 50%, rgba(236,72,153,.06), transparent 60%);
}
.anti-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
}
@media (max-width: 900px) { .anti-inner { grid-template-columns: 1fr; gap: 30px; } }
.anti-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1;
  text-transform: uppercase;
  position: sticky;
  top: 100px;
}
.anti-list {
  list-style: none;
  display: flex; flex-direction: column;
}
.anti-list li {
  display: flex; align-items: center; gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 36px);
  text-transform: lowercase;
  color: var(--ink-2);
  transition: color .25s, padding .25s;
}
.anti-list li:hover { color: var(--ink); padding-left: 16px; }
.anti-list li:last-child { border-bottom: 1px solid var(--line); }
.anti-list li span {
  font-family: var(--font-body);
  color: var(--neon-pink);
  font-size: .9em;
  font-weight: 700;
}

/* big cta */
.bigcta {
  position: relative;
  padding: 120px var(--pad-x);
  text-align: center;
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.bigcta-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(168,85,247,.25), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(236,72,153,.22), transparent 55%),
    radial-gradient(circle at 50% 100%, rgba(190,242,100,.15), transparent 60%);
  filter: blur(30px);
  z-index: -1;
}
.bigcta-inner {
  position: relative;
  display: flex; flex-direction: column; align-items: center; gap: 28px;
  max-width: 900px;
  margin: 0 auto;
}
.bigcta-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(48px, 9vw, 132px);
  line-height: .9;
  text-transform: uppercase;
  display: flex; flex-direction: column;
}
.bigcta-title .accent {
  background: var(--grad-1);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.cta-mega {
  padding: 24px 36px;
  background: var(--neon-lime);
  color: var(--bg);
  font-size: 20px;
  border-radius: 999px;
}
.cta-mega:hover {
  background: var(--ink);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 20px 50px -10px rgba(255,255,255,.3);
}
.bigcta-mini {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-3);
}

/* footer */
.foot {
  padding: 40px var(--pad-x) 60px;
  border-top: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-3);
}
.foot-row {
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.foot-row.sub { color: var(--ink-3); }
.foot-row a { color: var(--ink-2); border-bottom: 1px dashed currentColor; }
.foot-row a:hover { color: var(--neon-lime); }
.foot-disclaimer { max-width: 600px; text-align: right; }
@media (max-width: 720px) { .foot-disclaimer { text-align: left; } }

/* ============================================================
   reveal anim defaults
   ============================================================ */
[data-reveal] { opacity: 0; transform: translateY(40px); }