/* ============================================================
   CRESCENDO IQ — scroll-cinematic site
   Charcoal field · white ink · amber is light, never ink
   ============================================================ */

:root {
  --bg: #0a0a0b;
  --bg-2: #111113;
  --panel: #131316;
  --ink: #f5f4f2;
  --muted: rgba(245, 244, 242, 0.55);
  --faint: rgba(245, 244, 242, 0.32);
  --hairline: rgba(245, 244, 242, 0.12);
  --amber: #f0a532;
  --amber-deep: #e08e2b;
  --gold: #e8c268;
  --amber-glow: rgba(240, 165, 50, 0.45);
  --display: "Inter Tight", system-ui, sans-serif;
  --body: "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

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

html { scrollbar-width: none; }
html::-webkit-scrollbar { display: none; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

em { font-style: italic; }
.amber { color: var(--amber); }

/* film grain — the whole site sits under it */
.grain {
  position: fixed; inset: -50%;
  width: 200%; height: 200%;
  z-index: 90;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='0.7'/%3E%3C/svg%3E");
  animation: grain-shift 1.6s steps(4) infinite;
}
@keyframes grain-shift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-2%, 1%); }
  50% { transform: translate(1%, -2%); }
  75% { transform: translate(-1%, 2%); }
  100% { transform: translate(2%, -1%); }
}

/* ---------- fixed nav ---------- */
.hud {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 28px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--muted);
  background: linear-gradient(180deg, rgba(10,10,11,0.82), rgba(10,10,11,0));
}
.hud-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  position: relative;
  padding-bottom: 6px;
}
.hud-mark { width: 26px; height: 26px; display: block; }
.hud-word {
  font-family: var(--display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.hud-word b { font-weight: 900; }
.hud-rule {
  position: absolute;
  left: 36px; right: 0; bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--amber-deep), var(--amber) 55%, transparent);
  box-shadow: 0 0 10px var(--amber-glow);
  border-radius: 2px;
}
.hud-mid i { color: var(--amber); font-style: normal; }
.hud-cta {
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: 9px 18px;
  transition: border-color 0.3s, box-shadow 0.3s, color 0.3s;
}
.hud-cta:hover {
  border-color: var(--amber);
  color: var(--amber);
  box-shadow: 0 0 18px rgba(240, 165, 50, 0.25), inset 0 0 10px rgba(240, 165, 50, 0.08);
}

/* ---------- cinematic scrub sections ---------- */
.cinematic { position: relative; height: 520vh; }
.cinematic .sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100dvh; /* iOS Safari: track the real viewport as the URL bar collapses */
  width: 100%;
  overflow: hidden;
  background: var(--bg);
}
.cinematic canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% 45%, transparent 48%, rgba(0, 0, 0, 0.62) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.5) 0%, transparent 22%, transparent 72%, rgba(0, 0, 0, 0.72) 100%);
}
.vignette.soft {
  background:
    radial-gradient(130% 100% at 50% 45%, transparent 55%, rgba(0, 0, 0, 0.5) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.42) 0%, transparent 24%, transparent 64%, rgba(0, 0, 0, 0.78) 100%);
}

/* volumetric beams — amber light, never ink */
.beam {
  position: absolute;
  top: -20%;
  width: 34vw;
  height: 150%;
  pointer-events: none;
  mix-blend-mode: screen;
  filter: blur(42px);
  opacity: 0.5;
}
.beam-l {
  left: -12vw;
  background: linear-gradient(115deg, rgba(240, 165, 50, 0.16), transparent 62%);
  transform: rotate(8deg);
  animation: beam-breathe 7s ease-in-out infinite;
}
.beam-r {
  right: -14vw;
  background: linear-gradient(-115deg, rgba(232, 194, 104, 0.12), transparent 60%);
  transform: rotate(-9deg);
  animation: beam-breathe 9s ease-in-out infinite reverse;
}
@keyframes beam-breathe {
  0%, 100% { opacity: 0.36; }
  50% { opacity: 0.62; }
}

/* ---------- overlay copy ---------- */
.overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  pointer-events: none;
}
/* NOTE: engine animates inline `transform: translateY(...)` — never center via transform */
.reveal-line {
  position: absolute;
  left: 0;
  right: 0;
  top: 40%;
  padding: 0 4vw;
  text-align: center;
  opacity: 0;
  will-change: opacity, transform;
}
.reveal-line.endcap { top: auto; bottom: 17vh; }
.reveal-line h1 {
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(2.6rem, 7.2vw, 6.4rem);
  letter-spacing: -0.025em;
  line-height: 1.02;
  text-shadow: 0 4px 60px rgba(0, 0, 0, 0.85);
}
.reveal-line h1 em { color: var(--gold); }
.reveal-line .amberglow {
  color: var(--ink);
  text-shadow:
    0 0 26px rgba(240, 165, 50, 0.55),
    0 0 90px rgba(240, 165, 50, 0.28),
    0 4px 60px rgba(0, 0, 0, 0.9);
}
.reveal-line .sub {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: clamp(11px, 1.4vw, 14px);
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--muted);
}

/* lower-third variant for UI footage sections */
.overlay.lowerthird .reveal-line {
  left: 6vw;
  right: auto;
  top: auto;
  bottom: 13vh;
  padding: 0;
  text-align: left;
}
.overlay.lowerthird h2 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2rem, 4.6vw, 4.2rem);
  letter-spacing: -0.02em;
  line-height: 1.04;
  text-shadow: 0 4px 44px rgba(0, 0, 0, 0.9);
}
.overlay.lowerthird h2 em { color: var(--gold); }
.ovk {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--amber);
  margin-bottom: 14px;
}

/* ---------- telemetry corners ---------- */
.telemetry {
  position: absolute;
  z-index: 12;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.26em;
  color: var(--faint);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.telemetry b { color: var(--ink); font-weight: 700; }
.telemetry b.amber { color: var(--amber); }
.telemetry .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 8px var(--amber-glow);
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
.tl { top: 86px; left: 28px; }
.tr { top: 86px; right: 28px; }
.bl { bottom: 64px; left: 28px; }
.br { bottom: 64px; right: 28px; }

/* ---------- scrub progress ---------- */
.progress {
  position: absolute;
  left: 28px; right: 28px;
  bottom: 44px;
  height: 2px;
  background: rgba(245, 244, 242, 0.1);
  z-index: 12;
  border-radius: 2px;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--amber-deep), var(--amber), var(--gold));
  box-shadow: 0 0 14px var(--amber-glow);
  border-radius: 2px;
}
.scroll-hint {
  position: absolute;
  bottom: 12px; left: 50%;
  transform: translateX(-50%);
  z-index: 12;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--muted);
  animation: bob 1.8s ease-in-out infinite;
  transition: opacity 0.4s;
}
@keyframes bob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ---------- static panels ---------- */
.panel {
  position: relative;
  padding: 18vh 6vw;
  background:
    radial-gradient(70% 50% at 50% 0%, rgba(240, 165, 50, 0.05), transparent 60%),
    var(--bg);
}
.wrap { max-width: 980px; margin: 0 auto; position: relative; }
.wrap.wide { max-width: 1280px; }
.wrap.center { text-align: center; }

.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.34em;
  color: var(--amber);
  margin-bottom: 28px;
}
.kicker .hairpin {
  display: inline-block;
  font-weight: 700;
  transform: scaleX(1.4);
  text-shadow: 0 0 12px var(--amber-glow);
}
.panel h2 {
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(2.4rem, 5.4vw, 4.6rem);
  letter-spacing: -0.025em;
  line-height: 1.04;
  margin-bottom: 28px;
}
.lede {
  font-size: clamp(1.02rem, 1.5vw, 1.2rem);
  line-height: 1.75;
  color: var(--muted);
  max-width: 640px;
}

/* the amber rule — the ident's signature, used as section divider */
.glow-rule {
  position: absolute;
  left: 6vw; right: 6vw; bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(240, 165, 50, 0.55) 30%, rgba(240, 165, 50, 0.55) 70%, transparent);
  box-shadow: 0 0 18px rgba(240, 165, 50, 0.3);
}

/* pillars */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 64px;
}
.pillar {
  position: relative;
  padding: 30px 26px 26px;
  border-radius: 14px;
  background: linear-gradient(165deg, rgba(245, 244, 242, 0.045), rgba(245, 244, 242, 0.012));
  border: 1px solid var(--hairline);
  overflow: hidden;
  transition: transform 0.45s cubic-bezier(0.2, 0.7, 0.2, 1), border-color 0.45s, box-shadow 0.45s;
}
.pillar:hover {
  transform: translateY(-6px);
  border-color: rgba(240, 165, 50, 0.45);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(240, 165, 50, 0.12);
}
.pillar::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(70% 40% at 50% 0%, rgba(240, 165, 50, 0.1), transparent 70%);
  opacity: 0;
  transition: opacity 0.45s;
}
.pillar:hover::before { opacity: 1; }
.pillar-num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--amber);
  letter-spacing: 0.2em;
}
.pillar h3 {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  margin: 14px 0 12px;
}
.pillar p { color: var(--muted); font-size: 0.95rem; line-height: 1.65; }
.pillar-tag {
  display: inline-block;
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.26em;
  color: var(--faint);
}

/* stats */
.stats { padding: 16vh 6vw; }
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 30px;
}
.stat { border-left: 1px solid var(--hairline); padding-left: 24px; }
.stat-num {
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(3.2rem, 7vw, 6rem);
  letter-spacing: -0.03em;
  line-height: 1;
  display: block;
  font-variant-numeric: tabular-nums;
}
.stat-num.amber {
  color: var(--amber);
  text-shadow: 0 0 30px rgba(240, 165, 50, 0.35);
}
.stat-label {
  display: block;
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--faint);
}

/* gallery */
.gallery {
  margin-top: 64px;
  columns: 3;
  column-gap: 22px;
}
.shot {
  position: relative;
  break-inside: avoid;
  margin-bottom: 22px;
  border-radius: 14px;
  padding: 1px;
  background: linear-gradient(160deg, rgba(245, 244, 242, 0.2), rgba(245, 244, 242, 0.05) 30%, rgba(240, 165, 50, 0.25) 100%);
  transition: transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.5s;
}
.shot:hover {
  transform: translateY(-6px) scale(1.012);
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.55), 0 0 40px rgba(240, 165, 50, 0.14);
}
.shot img {
  display: block;
  width: 100%;
  border-radius: 13px;
  background: var(--bg-2);
}
.shot::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: 13px;
  background: linear-gradient(115deg, rgba(255, 255, 255, 0.09) 0%, transparent 28%);
  pointer-events: none;
}
.shot figcaption {
  position: absolute;
  left: 14px; bottom: 12px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.28em;
  color: rgba(245, 244, 242, 0.8);
  background: rgba(10, 10, 11, 0.65);
  backdrop-filter: blur(6px);
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid rgba(245, 244, 242, 0.08);
}

/* finale */
.finale {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(60% 45% at 50% 38%, rgba(240, 165, 50, 0.09), transparent 65%),
    var(--bg);
}
.lockup {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  justify-content: center;
}
.lockup-mark {
  width: clamp(54px, 7vw, 84px);
  filter: drop-shadow(0 0 24px rgba(240, 165, 50, 0.25));
}
.lockup-word {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.6rem, 6vw, 5rem);
  letter-spacing: -0.02em;
}
.lockup-word b { font-weight: 900; }
.lockup-rule {
  width: min(420px, 70vw);
  height: 3px;
  margin: 26px auto 34px;
  border-radius: 3px;
  background: linear-gradient(90deg, transparent, var(--amber-deep) 18%, var(--amber) 50%, var(--amber-deep) 82%, transparent);
  box-shadow: 0 0 24px var(--amber-glow), 0 0 60px rgba(240, 165, 50, 0.2);
}
.finale .lede { margin: 0 auto 44px; }
.cta-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  padding: 16px 30px;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.3s, box-shadow 0.3s, background 0.3s, color 0.3s, border-color 0.3s;
}
.btn-amber {
  background: linear-gradient(120deg, var(--amber-deep), var(--amber));
  color: #131313;
  border: none;
  font-weight: 700;
  box-shadow: 0 0 30px rgba(240, 165, 50, 0.3);
}
.btn-amber:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 44px rgba(240, 165, 50, 0.5);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--hairline);
}
.btn-ghost:hover {
  border-color: var(--amber);
  color: var(--amber);
  box-shadow: 0 0 22px rgba(240, 165, 50, 0.18);
}

.ident-link {
  margin-top: 22px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--faint);
  transition: color 0.3s, text-shadow 0.3s;
}
.ident-link:hover {
  color: var(--amber);
  text-shadow: 0 0 14px rgba(240, 165, 50, 0.35);
}

.ident-stage {
  margin: 44px auto 0;
  max-width: 820px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--hairline);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.6), 0 0 50px rgba(240, 165, 50, 0.1);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s, transform 0.6s;
}
.ident-stage.on { opacity: 1; transform: none; }
.ident-stage video { display: block; width: 100%; }

.foot {
  margin-top: 70px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--faint);
  line-height: 2.1;
}
.foot-dim { color: rgba(245, 244, 242, 0.2); }

/* ---------- scroll reveals ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s cubic-bezier(0.2, 0.65, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.65, 0.2, 1);
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- mobile ---------- */
@media (max-width: 860px) {
  .pillars { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: repeat(2, 1fr); row-gap: 44px; }
  .gallery { columns: 2; }
}
@media (max-width: 768px) {
  .cinematic { height: 380vh; }        /* fewer thumb-lengths per clip */
  .beam { display: none; }             /* spare the mobile GPU */
  .grain { opacity: 0.04; }
  .overlay.lowerthird .reveal-line { right: 5vw; }
}
@media (max-width: 600px) {
  .hud { padding: 12px 16px; }
  .hud-mid { display: none; }
  .telemetry { font-size: 8px; letter-spacing: 0.18em; }
  .tl, .tr { top: 64px; }
  .bl { bottom: 58px; }
  .br { display: none; }
  .progress { left: 16px; right: 16px; }
  .overlay.lowerthird .reveal-line { left: 5vw; bottom: 11vh; }
  .gallery { columns: 1; }
  .panel { padding: 14vh 7vw; }

  /* stats: fit the 2x2 grid on a phone */
  .stat { padding-left: 14px; }
  .stat-num { font-size: 2.7rem; }
  .stat-label { font-size: 8px; letter-spacing: 0.16em; }

  /* finale: stack the lockup and CTAs, keep every line inside the screen */
  .lockup { flex-direction: column; gap: 16px; }
  .lockup-word { font-size: 2.3rem; }
  .lockup-mark { width: 56px; }
  .cta-row { flex-direction: column; align-items: center; gap: 12px; }
  .cta-row .btn { width: min(100%, 300px); text-align: center; }
  .finale .lede br { display: none; }
  .foot { font-size: 8px; letter-spacing: 0.14em; }
}

@media (prefers-reduced-motion: reduce) {
  .grain, .beam, .scroll-hint, .telemetry .dot { animation: none; }
  .reveal { transition-duration: 0.01s; }
}