/* Mars Media Discovery Journey — client screens (gate, journey, Mars login) */
:root {
  --ink: #0E0F12;
  --paper: #F4F2EE;
  --muted: rgba(244, 242, 238, .64);
  --faint: rgba(244, 242, 238, .16);
  --line: rgba(244, 242, 238, .22);
  --c: #A8302A;            /* current chapter colour (set by JS) */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-io: cubic-bezier(0.65, 0, 0.35, 1);
  --display: 'Sora', system-ui, sans-serif;
  --body: 'Inter', system-ui, sans-serif;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { background: var(--ink); color: var(--paper); font: 400 16px/1.5 var(--body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
button, input, textarea { font: inherit; color: inherit; }
a { color: inherit; }
::selection { background: var(--paper); color: var(--ink); }

/* ---------- colour wash (two layers cross-fade between chapters) ---------- */
.wash, .wash > div { position: fixed; inset: 0; pointer-events: none; }
.wash > div { opacity: 0; transition: opacity 900ms var(--ease-io); }
.wash > div.on { opacity: 1; }
.grain { position: fixed; inset: 0; pointer-events: none; opacity: .07; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }

/* ---------- top bar ---------- */
.top { position: fixed; top: 0; left: 0; right: 0; z-index: 5; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 28px; padding: 22px clamp(16px, 4vw, 48px); }
.logo { height: 22px; display: block; opacity: .95; }
.rail { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 6px; max-width: 560px; justify-self: center; width: 100%; }
.rail span { position: relative; height: 3px; border-radius: 3px; background: var(--faint); overflow: hidden; }
.rail span i { position: absolute; inset: 0; background: var(--paper); transform-origin: left; transform: scaleX(var(--p, 0)); transition: transform 700ms var(--ease-out); }
.rail span[data-label]::after { content: attr(data-label); position: absolute; top: 9px; left: 0; font: 600 10px/1 var(--display); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); white-space: nowrap; opacity: 0; transition: opacity 400ms; }
.rail span.now[data-label]::after { opacity: 1; color: var(--paper); }
.rail span { overflow: visible; }
.rail span i { border-radius: 3px; }
.presence { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); white-space: nowrap; }
.presence b { width: 8px; height: 8px; border-radius: 50%; background: var(--faint); }
.presence.on b { background: #6FD08C; box-shadow: 0 0 0 4px rgba(111, 208, 140, .18); }
html[data-link="down"] .presence::after { content: '· reconnecting'; color: #E8B86A; }

/* ---------- stage ---------- */
#stage { position: relative; z-index: 2; min-height: 100vh; min-height: 100dvh; padding: 120px clamp(16px, 5vw, 72px) 120px; display: grid; align-items: center; }
.screen { width: 100%; max-width: 1320px; margin: 0 auto; }
.screen.leave { animation: leave 420ms var(--ease-io) forwards; }
@keyframes leave { to { opacity: 0; transform: translateY(-18px); filter: blur(6px); } }

.kicker { font: 600 12px/1 var(--display); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); display: flex; gap: 12px; align-items: center; margin-bottom: 26px; }
.kicker .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--paper); }
h1.title { font: 700 clamp(32px, 4.6vw, 64px)/1.04 var(--display); letter-spacing: -0.025em; margin: 0; text-wrap: balance; }
.sub { margin: 22px 0 0; font-size: clamp(16px, 1.35vw, 19px); color: var(--muted); max-width: 34ch; }

/* word mask reveal */
.w { display: inline-block; overflow: hidden; vertical-align: top; padding-bottom: .08em; margin-bottom: -.08em; }
.w > span { display: inline-block; transform: translateY(108%); animation: rise 760ms var(--ease-out) forwards; animation-delay: calc(var(--i) * 38ms + 80ms); }
@keyframes rise { to { transform: none; } }
.fade-in { opacity: 0; transform: translateY(10px); animation: fadeUp 700ms var(--ease-out) forwards; animation-delay: var(--d, 260ms); }
@keyframes fadeUp { to { opacity: 1; transform: none; } }

/* ---------- question layout: asymmetric ---------- */
.q-layout { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.answers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.answers.one { grid-template-columns: 1fr; }
.opt { position: relative; text-align: left; cursor: pointer; border: 1px solid var(--line); background: rgba(8, 9, 11, .26); border-radius: 14px; padding: 18px 48px 18px 20px; min-height: 64px;
  transition: background 260ms var(--ease-out), color 260ms var(--ease-out), border-color 260ms, transform 260ms var(--ease-out);
  opacity: 0; animation: fadeUp 620ms var(--ease-out) forwards; animation-delay: calc(var(--i) * 45ms + 320ms); }
.opt:hover { border-color: rgba(244, 242, 238, .5); transform: translateY(-1px); }
.opt:focus-visible { outline: 2px solid var(--paper); outline-offset: 3px; }
.opt .l { display: block; font: 600 17px/1.3 var(--body); }
.opt .d { display: block; margin-top: 4px; font-size: 14px; line-height: 1.4; color: var(--muted); }
.opt .tick { position: absolute; right: 16px; top: 50%; width: 18px; height: 18px; margin-top: -9px; opacity: 0; transform: scale(.4) rotate(-45deg); transition: all 360ms var(--ease-out); }
.opt.sel { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.opt.sel .d { color: rgba(14, 15, 18, .62); }
.opt.sel .tick { opacity: 1; transform: none; }
.opt.remote::before { content: ''; position: absolute; inset: -1px; border-radius: 14px; border: 2px solid var(--paper); animation: ping 1100ms var(--ease-out) forwards; pointer-events: none; }
@keyframes ping { from { opacity: 1; transform: scale(1); } to { opacity: 0; transform: scale(1.06); } }
.opt .who { position: absolute; top: -9px; right: 12px; font: 600 10px/1 var(--display); letter-spacing: .08em; text-transform: uppercase; background: var(--ink); color: var(--paper); padding: 4px 7px; border-radius: 20px; opacity: 0; transition: opacity 300ms; }
.opt.sel .who.on { opacity: 1; }
.limit { grid-column: 1 / -1; font-size: 13px; color: var(--muted); margin: 6px 2px 0; }

.field { grid-column: 1 / -1; width: 100%; background: rgba(8, 9, 11, .3); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; font-size: 18px; line-height: 1.5; resize: vertical; transition: border-color 260ms; opacity: 0; animation: fadeUp 620ms var(--ease-out) forwards; animation-delay: 320ms; }
.field:focus { outline: none; border-color: var(--paper); }
textarea.field { min-height: 180px; }
.field::placeholder { color: rgba(244, 242, 238, .38); }
.other { grid-column: 1 / -1; }
.typing { grid-column: 1 / -1; font-size: 13px; color: var(--muted); min-height: 20px; }

.scale { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
.scale .opt { padding: 22px 0; text-align: center; font: 700 26px/1 var(--display); }
.scale-ends { grid-column: 1 / -1; display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); margin-top: 4px; }

/* ---------- intro / chapter / outro ---------- */
.hero { max-width: 980px; }
.hero h1.title { font-size: clamp(40px, 7vw, 104px); }
.hero .sub { max-width: 46ch; }
.chapter-num { font: 700 clamp(88px, 16vw, 220px)/.8 var(--display); letter-spacing: -0.05em; color: transparent; -webkit-text-stroke: 1.5px rgba(244, 242, 238, .55); margin-bottom: 18px; }
.cta { margin-top: 44px; display: inline-flex; align-items: center; gap: 14px; background: var(--paper); color: var(--ink); border: 0; border-radius: 40px; padding: 16px 26px 16px 28px; font: 600 16px/1 var(--display); cursor: pointer; transition: transform 300ms var(--ease-out), box-shadow 300ms; }
.cta:hover { transform: translateY(-2px); box-shadow: 0 14px 30px -12px rgba(0, 0, 0, .6); }
.cta svg { width: 14px; height: 14px; }

.heard { margin-top: 48px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px 36px; }
.heard h3 { margin: 0 0 10px; font: 600 12px/1 var(--display); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.heard p { margin: 0 0 8px; font-size: 15px; }
.heard p em { font-style: normal; color: var(--muted); display: block; font-size: 13px; }

.host-hint { margin-top: 40px; display: inline-flex; align-items: center; gap: 12px; color: var(--muted); font-size: 15px; }
.host-hint .pulse { width: 9px; height: 9px; border-radius: 50%; background: var(--paper); animation: hp 2.2s ease-in-out infinite; }
@keyframes hp { 50% { opacity: .3; } }
.nav .count { margin: 0 auto; font: 600 13px/1 var(--display); letter-spacing: .04em; color: var(--paper); background: rgba(8, 9, 11, .4); border: 1px solid var(--line); border-radius: 30px; padding: 9px 16px; }
.nav .count:empty { display: none; }

/* ---------- bottom nav ---------- */
.nav { position: fixed; z-index: 5; left: 0; right: 0; bottom: 0; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 40px clamp(16px, 4vw, 48px) 24px; background: linear-gradient(to top, rgba(14, 15, 18, .92) 35%, rgba(14, 15, 18, 0)); pointer-events: none; }
.nav > * { pointer-events: auto; }
.btn { border: 1px solid var(--line); background: rgba(8, 9, 11, .3); border-radius: 40px; padding: 12px 20px; font: 600 14px/1 var(--display); cursor: pointer; transition: all 240ms var(--ease-out); }
.btn:hover { border-color: var(--paper); }
.btn.primary { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn[disabled] { opacity: .3; pointer-events: none; }
.count { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }

/* ---------- gate + login ---------- */
.gate { min-height: 100vh; min-height: 100dvh; display: grid; place-items: center; padding: 24px 16px; position: relative; z-index: 2; }
.gate-box { width: 100%; max-width: 440px; }
.gate-box .logo { height: 34px; margin-bottom: 64px; }
.gate-box h1 { font: 700 clamp(30px, 6vw, 44px)/1.05 var(--display); letter-spacing: -0.02em; margin: 0 0 12px; }
.gate-box p { color: var(--muted); margin: 0 0 32px; }
.code-in { width: 100%; text-transform: uppercase; letter-spacing: .32em; font: 700 28px/1 var(--display); text-align: center; padding: 20px 12px; background: rgba(8, 9, 11, .35); border: 1px solid var(--line); border-radius: 14px; }
.code-in:focus { outline: none; border-color: var(--paper); }
.gate-box .cta { width: 100%; justify-content: center; margin-top: 14px; }
.err { min-height: 22px; margin-top: 14px; color: #F1A38E; font-size: 14px; }
.small-link { display: inline-block; margin-top: 40px; font-size: 13px; color: var(--muted); text-decoration: none; }
.small-link:hover { color: var(--paper); }

/* ---------- phone ---------- */
@media (max-width: 860px) {
  .q-layout { grid-template-columns: 1fr; gap: 28px; }
  .answers { grid-template-columns: 1fr; }
  .heard { grid-template-columns: 1fr; }
  .top { grid-template-columns: auto 1fr; gap: 16px; }
  .presence { display: none; }
  .rail span[data-label]::after { display: none; }
  #stage { padding-top: 96px; padding-bottom: 110px; align-items: start; }
  .sub { max-width: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-delay: 0ms !important; transition-duration: 1ms !important; }
}