/* ================================================================
   Trvlfy · Landing-Page · Premium Travel-Tech (Sans)
   Inter Tight + IBM Plex Mono · Solari amber accent on dark
   Page palette aligned to Frankfurt flipboard: warm off-white
   primary text, muted yellow accent throughout.
   ================================================================ */

/* ---------- Design tokens ---------- */
:root {
  --bg: #0a0b0f;
  --bg-elev: #101217;
  --bg-card: #14171e;
  --bg-card-hi: #191d26;

  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.16);
  --border-accent: rgba(232, 197, 71, 0.4);

  --text: #f5f0e0;
  --text-muted: #a8a195;
  --text-dim: #6e6a60;

  --accent: #e8c547;
  --accent-bright: #f2d968;
  --accent-dim: #c9a830;
  --accent-soft: rgba(232, 197, 71, 0.1);
  --accent-glow: rgba(232, 197, 71, 0.28);

  /* Flipboard (Frankfurt-Solari palette — own color system) */
  --board-case:   #141620;             /* outer board / case */
  --board-flap:   #0a0b10;             /* individual flap background (darker than case) */
  --board-head:   #0f1118;             /* header strip */
  --board-text:   #f5f0e0;             /* warm off-white (primary) */
  --board-accent: #e8c547;             /* muted yellow (highlights only) */
  --board-muted:  rgba(245, 240, 224, 0.38);
  --board-dim:    rgba(245, 240, 224, 0.18);
  --board-seam:   rgba(0, 0, 0, 0.7);
  --board-hairline: rgba(245, 240, 224, 0.05);

  --step--2: clamp(0.72rem, 0.7rem + 0.1vw, 0.78rem);
  --step--1: clamp(0.82rem, 0.78rem + 0.18vw, 0.92rem);
  --step-0:  clamp(1rem, 0.95rem + 0.22vw, 1.13rem);
  --step-1:  clamp(1.2rem, 1.05rem + 0.5vw, 1.45rem);
  --step-2:  clamp(1.7rem, 1.35rem + 1.1vw, 2.3rem);
  --step-3:  clamp(2.4rem, 1.8rem + 2.4vw, 3.6rem);
  --step-4:  clamp(3rem, 2.1rem + 3.8vw, 5.3rem);
  --step-5:  clamp(3.6rem, 2.3rem + 5.4vw, 7rem);
  --step-mega: clamp(3.8rem, 2.2rem + 7.2vw, 8.6rem);

  --sp-1: 0.5rem;
  --sp-2: 1rem;
  --sp-3: 1.5rem;
  --sp-4: 2rem;
  --sp-5: 3rem;
  --sp-6: 5rem;
  --sp-7: 8rem;
  --sp-8: 11rem;

  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-soft: cubic-bezier(0.16, 1, 0.3, 1);

  --maxw: 1240px;
  --radius: 18px;
  --radius-sm: 10px;

  --font-sans: 'Inter Tight', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', 'Menlo', monospace;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  color-scheme: dark;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
em { font-style: normal; color: var(--text); }
::selection { background: var(--accent); color: var(--bg); }

/* ---------- Utility: mono ---------- */
.mono {
  font-family: var(--font-mono);
  font-feature-settings: "ss01", "cv01";
  font-size: 0.9em;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- Ambient grid ---------- */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: -1px -1px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 70%);
  pointer-events: none;
}

/* ---------- Typography ---------- */
.display {
  font-family: var(--font-sans);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 0.98;
}
.display .accent {
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.045em;
}
.hero__muted { color: var(--text-muted); font-weight: 400; }

h1, h2, h3 {
  margin: 0 0 var(--sp-3);
  font-weight: 500;
  letter-spacing: -0.025em;
}
h1 { font-size: var(--step-mega); line-height: 0.96; font-weight: 400; }
h2 { font-size: var(--step-4); line-height: 1; letter-spacing: -0.035em; font-weight: 400; }
h3 { font-size: var(--step-2); line-height: 1.2; font-weight: 600; letter-spacing: -0.02em; }
p  { margin: 0 0 var(--sp-3); color: var(--text-muted); }

.eyebrow {
  font-family: var(--font-mono);
  display: inline-flex;
  align-items: center;
  gap: 0.75em;
  font-size: var(--step--2);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 var(--sp-4);
}
.eyebrow::before {
  content: "";
  width: 32px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.eyebrow__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: pulse-dot 2.4s var(--ease-in-out) infinite;
}
@keyframes pulse-dot {
  0%,100% { opacity: 1; transform: scale(1); }
  50%     { opacity: 0.4; transform: scale(0.65); }
}
.section-num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 500;
  font-size: 1em;
  margin-right: 0.6em;
  letter-spacing: 0.04em;
}
.number-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 500;
  font-size: 0.9em;
  margin-right: 0.6em;
  letter-spacing: 0.08em;
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--sp-4);
}
.section {
  padding: var(--sp-8) 0;
  position: relative;
}
.section + .section { border-top: 1px solid var(--border); }
.only-desktop { display: none; }
@media (min-width: 900px) { .only-desktop { display: inline; } }

/* ---------- Focus ---------- */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--bg);
  padding: 0.5rem 1rem;
  font-weight: 600;
  z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; border-radius: 6px; }

/* ---------- Motion primitives ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.9s var(--ease-soft),
    transform 0.9s var(--ease-soft);
  transition-delay: calc(var(--i, 0) * 90ms);
}
.reveal.in {
  opacity: 1;
  transform: none;
}
.hero-stagger {
  opacity: 0;
  transform: translateY(26px);
  animation: rise 0.95s var(--ease-soft) both;
  animation-delay: calc(var(--i, 0) * 85ms + 150ms);
}
@keyframes rise {
  0%   { opacity: 0; transform: translateY(26px); }
  100% { opacity: 1; transform: none; }
}
/* Safety: if animation is skipped for any reason, keep content visible */
.no-js .hero-stagger,
.hero-stagger.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .hero-stagger {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
    transition: none !important;
  }
  .eyebrow__dot,
  .feature__orbit,
  .feature__pulse,
  .timeline__pulse,
  .hero__orb,
  .tag--live::before { animation: none !important; }
}

/* ================================================================
   NAVIGATION
   ================================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  background: rgba(10, 11, 15, 0.65);
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--accent);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  transition: transform 0.3s var(--ease-soft);
}
.nav__logo:hover { transform: translateX(-2px); }
.nav__logo svg { transition: transform 0.5s var(--ease-soft); }
.nav__logo:hover svg { transform: rotate(-12deg); }
.nav__word { color: var(--text); }
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  font-family: var(--font-mono);
  font-size: var(--step--2);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.nav__link {
  position: relative;
  padding: 0.2em 0;
  transition: color 0.25s var(--ease-out);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -3px;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-soft);
}
.nav__link:hover { color: var(--text); }
.nav__link:hover::after { transform: scaleX(1); }
.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  color: var(--bg);
  background: var(--accent);
  padding: 0.55rem 1.05rem;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.08em;
  transition:
    background 0.25s var(--ease-out),
    transform 0.25s var(--ease-soft),
    box-shadow 0.3s var(--ease-out);
}
.nav__cta:hover {
  background: var(--accent-bright);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px -8px var(--accent-glow);
}
.nav__cta:hover span { transform: translate(1px, -1px); }
.nav__cta span { display: inline-block; transition: transform 0.3s var(--ease-soft); }
@media (max-width: 720px) {
  .nav__link { display: none; }
  .nav__links { gap: var(--sp-2); }
}

/* ================================================================
   HERO
   ================================================================ */
.hero {
  padding: var(--sp-8) 0 var(--sp-7);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.hero__orb {
  position: absolute;
  inset: -25% -10% auto auto;
  width: min(72vw, 900px);
  aspect-ratio: 1;
  background:
    conic-gradient(
      from 0deg at 50% 50%,
      rgba(232,197,71,0.22),
      transparent 25%,
      rgba(232,197,71,0.1) 50%,
      transparent 75%,
      rgba(232,197,71,0.22)
    );
  border-radius: 50%;
  filter: blur(60px);
  animation: slow-spin 28s linear infinite;
  pointer-events: none;
  z-index: -1;
}
@keyframes slow-spin {
  from { transform: rotate(0); }
  to   { transform: rotate(360deg); }
}
.hero__noise {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  mix-blend-mode: overlay;
  pointer-events: none;
  z-index: -1;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' seed='7'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
.hero__inner { position: relative; z-index: 1; }

.hero__title {
  margin: var(--sp-3) 0 var(--sp-4);
  max-width: 16ch;
  font-size: var(--step-mega);
  letter-spacing: -0.04em;
  line-height: 0.96;
  font-weight: 400;
}
.hero__line { display: block; }

.hero__sub {
  max-width: 60ch;
  font-size: var(--step-1);
  color: var(--text);
  margin-bottom: var(--sp-5);
  line-height: 1.45;
  font-weight: 400;
  letter-spacing: -0.005em;
}

/* Waitlist form */
.waitlist {
  display: flex;
  gap: 0.5rem;
  max-width: 540px;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.4rem 0.4rem 0.4rem 1.4rem;
  transition:
    border-color 0.25s var(--ease-out),
    box-shadow 0.4s var(--ease-soft),
    transform 0.3s var(--ease-soft);
  flex-wrap: wrap;
}
.waitlist:focus-within {
  border-color: var(--accent);
  box-shadow:
    0 0 0 5px rgba(232, 197, 71, 0.14),
    0 14px 40px -14px var(--accent-glow);
  transform: translateY(-1px);
}
.waitlist input {
  flex: 1;
  min-width: 200px;
  background: transparent;
  border: 0;
  color: var(--text);
  font: inherit;
  padding: 0.55rem 0;
  outline: 0;
  letter-spacing: -0.005em;
}
.waitlist input::placeholder { color: var(--text-dim); }
.waitlist button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: var(--bg);
  border-radius: 999px;
  padding: 0.75rem 1.4rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  transition:
    background 0.25s var(--ease-out),
    transform 0.25s var(--ease-soft),
    box-shadow 0.35s var(--ease-out);
}
.waitlist button:hover {
  background: var(--accent-bright);
  box-shadow: 0 12px 32px -12px var(--accent-glow);
}
.waitlist button:hover .waitlist__button-arrow { transform: translateX(4px); }
.waitlist button[disabled] { opacity: 0.6; cursor: wait; transform: none; }
.waitlist__button-arrow {
  display: inline-block;
  transition: transform 0.3s var(--ease-soft);
}
.waitlist__status {
  width: 100%;
  margin: 0.5rem 0 0;
  padding-left: 1rem;
  font-size: var(--step--1);
  color: var(--accent);
}
.waitlist__status[data-state="error"] { color: #ff8f8f; }
.waitlist__consent {
  max-width: 540px;
  margin-top: var(--sp-2);
  font-size: var(--step--1);
  color: var(--text-dim);
}
.waitlist__consent a {
  color: var(--text-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s var(--ease-out);
}
.waitlist__consent a:hover { color: var(--accent); }

.trust {
  list-style: none;
  margin: var(--sp-5) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-4);
  font-family: var(--font-mono);
  font-size: var(--step--2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.trust li {
  position: relative;
  padding-left: 1.1rem;
}
.trust li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

@media (max-width: 560px) {
  .waitlist {
    flex-direction: column;
    border-radius: 20px;
    padding: 0.85rem;
  }
  .waitlist input { padding: 0.7rem 0.5rem; }
  .waitlist button { width: 100%; justify-content: center; }
  .waitlist__status { padding-left: 0.5rem; }
}

/* ================================================================
   FLIPBOARD · Frankfurt Solari Departure Board
   White/off-white primary text, yellow only for DEPARTURES /
   MILES / status=NEW. Individual character flaps with borders
   and seam lines — not a modern dashboard.
   ================================================================ */
.hero__visual {
  margin-top: var(--sp-7);
  display: flex;
  justify-content: stretch;
}
.flipboard {
  --flap-size: clamp(1.05rem, 0.3rem + 1.9vw, 1.85rem);   /* char font-size */
  --flap-w:    calc(var(--flap-size) * 0.95);             /* width of one flap */
  --flap-h:    calc(var(--flap-size) * 1.55);             /* height of one flap */
  --flap-gap:  2px;
  --flap-pad-x: clamp(0.8rem, 0.4rem + 1vw, 1.6rem);
  --col-gap:   clamp(0.8rem, 0.4rem + 1.2vw, 2rem);

  /* Field widths, in chars. Must match FIELD_WIDTHS in script.js. */
  --field-route: 9;
  --field-prog:  15;
  --field-miles: 4;
  --field-stat:  5;

  width: 100%;
  max-width: 100%;
  background: var(--board-case);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  overflow: hidden;
  font-family: var(--font-mono);
  box-shadow:
    0 50px 100px -30px rgba(0, 0, 0, 0.7),
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 0 0 1px rgba(0, 0, 0, 0.4);
  position: relative;
}

/* Header strip */
.flipboard__head {
  background: var(--board-head);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem var(--flap-pad-x);
  border-bottom: 1px solid rgba(0, 0, 0, 0.5);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}
.flipboard__signal {
  display: inline-flex;
  width: 12px; height: 12px;
}
.flipboard__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--board-accent);
  box-shadow: 0 0 8px rgba(232, 197, 71, 0.55);
  animation: board-blink 1.6s steps(2, jump-none) infinite;
}
@keyframes board-blink {
  0%, 45%  { opacity: 1; }
  50%, 55% { opacity: 0.15; }
  60%,100% { opacity: 1; }
}
.flipboard__title { color: var(--board-accent); letter-spacing: 0.24em; }
.flipboard__clock { color: var(--board-muted); letter-spacing: 0.18em; }

/* Column headers */
.flipboard__cols {
  display: grid;
  grid-template-columns: var(--col-route) var(--col-prog) var(--col-miles) var(--col-stat);
  column-gap: var(--col-gap);
  padding: 0.55rem var(--flap-pad-x);
  background: var(--board-case);
  border-bottom: 1px solid rgba(0, 0, 0, 0.45);
  font-size: 0.64rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--board-muted);
}

/* Rows of flaps */
.flipboard__rows {
  list-style: none;
  margin: 0;
  padding: 0;
}
.flipboard__row {
  display: grid;
  grid-template-columns: var(--col-route) var(--col-prog) var(--col-miles) var(--col-stat);
  column-gap: var(--col-gap);
  padding: calc(var(--flap-gap) * 3) var(--flap-pad-x);
  background: var(--board-case);
  border-top: 1px solid rgba(0, 0, 0, 0.45);
}
.flipboard__row:first-child { border-top: 0; }

/* One cell = flap row of its field. Chars are generated in JS. */
.flipboard__cell {
  display: flex;
  gap: var(--flap-gap);
  color: var(--board-text);
  font-family: var(--font-mono);
  font-weight: 600;
  white-space: nowrap;
}
.flipboard__cell--miles,
.flipboard__cell--status[data-state="new"] {
  color: var(--board-accent);
}

/* Each character = one flap */
.flipboard__char {
  flex: 0 0 auto;
  width: var(--flap-w);
  height: var(--flap-h);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--board-flap);
  border: 1px solid var(--board-hairline);
  border-radius: 1.5px;
  font-size: var(--flap-size);
  line-height: 1;
  letter-spacing: 0;
  text-transform: uppercase;
  position: relative;
  box-shadow:
    inset 0 1px 2px rgba(0, 0, 0, 0.55),
    inset 0 -1px 0 rgba(255, 255, 255, 0.025);
  overflow: hidden;
  /* tabular-ish character rendering */
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

/* Horizontal seam line suggesting the flap mechanism */
.flipboard__char::before {
  content: "";
  position: absolute;
  left: 0; right: 0;
  top: 50%;
  height: 1px;
  background: var(--board-seam);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.025);
  transform: translateY(-0.5px);
  pointer-events: none;
  z-index: 1;
}
.flipboard__char > span {
  position: relative;
  z-index: 0;
}
/* Space flaps stay blank but keep their frame */
.flipboard__char--blank { color: transparent; }

/* Brief focus pulse while this char is actively shuffling */
.flipboard__char.is-flipping {
  background: #0e1017;
  border-color: rgba(245, 240, 224, 0.12);
}

/* Status NEW: slow pulse after settle */
.flipboard__cell--status[data-state="new"] .flipboard__char {
  animation: board-new-pulse 2.4s ease-in-out infinite;
}
@keyframes board-new-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.68; }
}

/* Footer */
.flipboard__foot {
  padding: 0.55rem var(--flap-pad-x) 0.65rem;
  border-top: 1px solid rgba(0, 0, 0, 0.5);
  background: var(--board-head);
  color: var(--board-muted);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-align: right;
}

/* Column grid sizes — computed explicitly from flap width × field char
   count so header labels align pixel-perfectly with the first flap of
   each data cell underneath. justify-content: space-between spreads any
   leftover track space between columns so the flipboard fills the board. */
.flipboard {
  --col-route: calc(var(--field-route) * var(--flap-w) + (var(--field-route) - 1) * var(--flap-gap));
  --col-prog:  calc(var(--field-prog)  * var(--flap-w) + (var(--field-prog)  - 1) * var(--flap-gap));
  --col-miles: calc(var(--field-miles) * var(--flap-w) + (var(--field-miles) - 1) * var(--flap-gap));
  --col-stat:  calc(var(--field-stat)  * var(--flap-w) + (var(--field-stat)  - 1) * var(--flap-gap));
}
.flipboard__cols,
.flipboard__row {
  justify-content: space-between;
}
.flipboard__cols > span {
  /* Header labels left-align inside their grid track so the first letter
     sits directly above the first flap of the data cell below. */
  text-align: left;
  align-self: center;
}

/* Tablet: slightly tighten spacing */
@media (max-width: 900px) {
  .flipboard {
    --flap-size: clamp(0.9rem, 0.5rem + 1.1vw, 1.25rem);
    --col-gap: clamp(0.5rem, 0.3rem + 0.8vw, 1rem);
    --flap-pad-x: clamp(0.65rem, 0.4rem + 0.6vw, 1rem);
  }
  .flipboard__cols { font-size: 0.58rem; letter-spacing: 0.16em; }
}

/* Mobile: drop the PROGRAMM column so ROUTE + MILES + STATUS stay legible */
@media (max-width: 560px) {
  .flipboard {
    --flap-size: clamp(0.82rem, 0.55rem + 1.1vw, 1rem);
    --flap-w: calc(var(--flap-size) * 0.9);
    --flap-h: calc(var(--flap-size) * 1.55);
    --flap-gap: 1px;
    --col-gap: 0.6rem;
    --flap-pad-x: 0.7rem;
  }
  .flipboard__cols,
  .flipboard__row {
    grid-template-columns: var(--col-route) var(--col-miles) var(--col-stat);
  }
  .flipboard__cols > :nth-child(2),
  .flipboard__cell[data-field="prog"] {
    display: none;
  }
  .flipboard__head { font-size: 0.56rem; letter-spacing: 0.18em; }
  .flipboard__cols { font-size: 0.52rem; letter-spacing: 0.14em; }
  .flipboard__foot { font-size: 0.5rem; }
}

/* ================================================================
   PROBLEM
   ================================================================ */
.problem__inner {
  display: grid;
  gap: var(--sp-6);
  grid-template-columns: 1fr;
  align-items: start;
}
@media (min-width: 960px) {
  .problem__inner {
    grid-template-columns: 1fr 1.3fr;
    gap: var(--sp-7);
  }
  .problem__head { position: sticky; top: 100px; }
}
.problem__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0;
}
.problem__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: var(--step-1);
  line-height: 1.45;
  letter-spacing: -0.005em;
  transition: padding-left 0.4s var(--ease-soft);
}
.problem__list li:hover { padding-left: 0.5rem; }
.problem__list li:hover .problem__marker {
  color: var(--accent);
  transform: translateX(4px);
}
.problem__list li:last-child { border-bottom: 1px solid var(--border); }
.problem__marker {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1.2rem;
  color: var(--text-dim);
  line-height: 1;
  transition: color 0.3s var(--ease-out), transform 0.4s var(--ease-soft);
}
.problem__list strong { color: var(--text); font-weight: 600; letter-spacing: -0.01em; }

/* ================================================================
   FEATURES
   ================================================================ */
.features__head { margin-bottom: var(--sp-6); max-width: 48rem; }
.feature-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}
.feature {
  position: relative;
  background: linear-gradient(180deg, var(--bg-card-hi), var(--bg-card));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 1.75rem 2rem;
  overflow: hidden;
  transition:
    border-color 0.4s var(--ease-out),
    transform 0.5s var(--ease-soft),
    background 0.4s var(--ease-out);
}
.feature::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--border-accent), transparent 50%);
  -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 0.5s var(--ease-out);
  pointer-events: none;
}
.feature:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
}
.feature:hover::before { opacity: 1; }
.feature:hover .feature__orbit { animation-play-state: paused; }

.feature__illustration {
  margin: -0.5rem -0.5rem 1.25rem;
  background:
    radial-gradient(ellipse at 50% 40%, rgba(232,197,71,0.1), transparent 60%),
    linear-gradient(180deg, var(--bg-elev), var(--bg-card));
  border-bottom: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
}
.feature__orbit {
  transform-origin: 120px 80px;
  animation: orbit 12s linear infinite;
}
@keyframes orbit {
  from { transform: rotate(0); }
  to   { transform: rotate(360deg); }
}
.feature__pulse {
  transform-origin: 182px 108px;
  stroke-width: 2;
  animation: pulse-ring 2.4s var(--ease-out) infinite;
  opacity: 0;
}
@keyframes pulse-ring {
  0%   { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2.8); opacity: 0; }
}
.feature__num {
  margin: 0 0 0.4rem;
  color: var(--text-muted);
  font-size: var(--step--1);
  letter-spacing: 0.02em;
}
.feature h3 {
  font-size: var(--step-1);
  line-height: 1.25;
  margin-bottom: 0.85rem;
  letter-spacing: -0.02em;
  font-weight: 600;
}
.feature p:last-child {
  margin-bottom: 0;
  font-size: var(--step-0);
  color: var(--text-muted);
  letter-spacing: -0.005em;
}

/* ================================================================
   ROADMAP · Timeline
   ================================================================ */
.roadmap__head { max-width: 52rem; margin-bottom: var(--sp-7); }
.section__intro {
  max-width: 56ch;
  font-size: var(--step-1);
  color: var(--text);
  margin-top: var(--sp-3);
  letter-spacing: -0.005em;
}
.timeline {
  position: relative;
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--sp-5);
}
.timeline::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 28px;
  bottom: 28px;
  width: 1px;
  background: repeating-linear-gradient(
    to bottom,
    var(--border-strong) 0,
    var(--border-strong) 6px,
    transparent 6px,
    transparent 12px
  );
}
.timeline__stop {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: var(--sp-3);
  align-items: start;
}
.timeline__node {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}
.timeline__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--border-strong);
  position: relative;
  z-index: 1;
}
.timeline__stop[data-status="now"] .timeline__dot {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 6px rgba(232,197,71,0.18), 0 0 24px var(--accent-glow);
}
.timeline__pulse {
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  animation: pulse-ring 2.4s var(--ease-out) infinite;
  opacity: 0;
}
.timeline__card {
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.4s var(--ease-out), transform 0.4s var(--ease-soft);
}
.timeline__card:hover {
  border-color: var(--border-strong);
  transform: translateX(4px);
}
.timeline__stop[data-status="now"] .timeline__card {
  border-color: rgba(232,197,71,0.35);
  background:
    linear-gradient(180deg, rgba(232,197,71,0.05), transparent 40%),
    var(--bg-card);
}
.timeline__card ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}
.timeline__card li {
  padding: 0.55rem 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: var(--step-0);
}
.timeline__card li:first-child { border-top: 0; }
.timeline__stop[data-status="now"] .timeline__card li { color: var(--text); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--text-muted);
  font-weight: 500;
}
.tag--live {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(232,197,71,0.08);
}
.tag--live::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse-dot 2.4s var(--ease-in-out) infinite;
}

@media (min-width: 960px) {
  .timeline {
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    padding-top: 60px;
  }
  .timeline::before {
    left: 4%;
    right: 4%;
    top: 73px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: repeating-linear-gradient(
      to right,
      var(--border-strong) 0,
      var(--border-strong) 6px,
      transparent 6px,
      transparent 12px
    );
  }
  .timeline__stop {
    grid-template-columns: 1fr;
    text-align: left;
    padding: 0 var(--sp-2);
    position: relative;
  }
  .timeline__node { margin: -60px auto var(--sp-3); }
  .timeline__card:hover { transform: translateY(-4px); }
}

/* ================================================================
   FAQ · animated accordion
   ================================================================ */
.faq__inner {
  display: grid;
  gap: var(--sp-6);
  grid-template-columns: 1fr;
  align-items: start;
}
@media (min-width: 960px) {
  .faq__inner {
    grid-template-columns: 0.7fr 1fr;
    gap: var(--sp-7);
  }
  .faq__head { position: sticky; top: 100px; }
}
.faq__list { display: grid; gap: 0; }
.faq-item { border-top: 1px solid var(--border); }
.faq-item:last-child { border-bottom: 1px solid var(--border); }
.faq-item__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem 0;
  text-align: left;
  font-size: var(--step-1);
  color: var(--text);
  font-weight: 500;
  letter-spacing: -0.015em;
  transition: color 0.3s var(--ease-out);
}
.faq-item__q:hover { color: var(--accent); }
.faq-item__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1;
  transition:
    transform 0.4s var(--ease-soft),
    border-color 0.3s var(--ease-out),
    background 0.3s var(--ease-out),
    color 0.3s var(--ease-out);
  flex-shrink: 0;
}
.faq-item__q:hover .faq-item__icon {
  border-color: var(--accent);
  background: rgba(232,197,71,0.1);
}
.faq-item__q[aria-expanded="true"] .faq-item__icon {
  transform: rotate(45deg);
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.faq-item__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease-soft);
}
.faq-item__panel-inner {
  padding: 0 0 1.4rem 0;
  max-width: 62ch;
  color: var(--text-muted);
  font-size: var(--step-0);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.35s var(--ease-out) 0.1s, transform 0.35s var(--ease-soft) 0.1s;
}
.faq-item__q[aria-expanded="true"] + .faq-item__panel .faq-item__panel-inner {
  opacity: 1;
  transform: none;
}
.faq-item__panel-inner p { margin: 0; }
.faq-item__panel-inner a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ================================================================
   CTA
   ================================================================ */
.cta {
  text-align: center;
  padding: var(--sp-8) 0 var(--sp-7);
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  inset: auto 50% -60% 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 900px;
  aspect-ratio: 1;
  background: radial-gradient(closest-side, var(--accent-soft), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: -1;
}
.cta__title {
  font-size: var(--step-5);
  max-width: 20ch;
  margin: 0 auto var(--sp-4);
}
.cta__inner p {
  max-width: 46ch;
  margin: 0 auto var(--sp-5);
  color: var(--text-muted);
  font-size: var(--step-1);
}
.cta__button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: var(--bg);
  padding: 1rem 2rem;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: -0.005em;
  position: relative;
  transition:
    background 0.3s var(--ease-out),
    transform 0.3s var(--ease-soft),
    box-shadow 0.4s var(--ease-out);
}
.cta__button::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  opacity: 0;
  transition: opacity 0.3s var(--ease-out), transform 0.5s var(--ease-soft);
}
.cta__button:hover {
  background: var(--accent-bright);
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -14px var(--accent-glow);
}
.cta__button:hover::after { opacity: 0.6; transform: scale(1.06); }
.cta__button-arrow {
  display: inline-block;
  transition: transform 0.4s var(--ease-soft);
}
.cta__button:hover .cta__button-arrow { transform: translateY(-3px); }

/* ================================================================
   FOOTER
   ================================================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--sp-4) 0;
  font-size: var(--step--1);
  color: var(--text-dim);
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  flex-wrap: wrap;
}
.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text-muted);
}
.footer__sep { color: var(--text-dim); margin: 0 0.2em; }
.footer__brand .mono { color: var(--text-dim); font-size: 0.7rem; letter-spacing: 0.22em; }
.footer__links { display: flex; gap: var(--sp-4); flex-wrap: wrap; }
.footer__links a {
  position: relative;
  padding: 0.1em 0;
  transition: color 0.25s var(--ease-out);
}
.footer__links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease-soft);
}
.footer__links a:hover { color: var(--text); }
.footer__links a:hover::after { transform: scaleX(1); }

/* ================================================================
   LEGAL PAGES
   ================================================================ */
.legal { padding: var(--sp-6) 0 var(--sp-8); }
.legal__inner { max-width: 760px; }
.legal h1 {
  font-size: var(--step-4);
  margin: var(--sp-3) 0 var(--sp-5);
  line-height: 1.02;
  font-weight: 500;
  letter-spacing: -0.03em;
}
.legal h2 {
  font-size: var(--step-1);
  margin: var(--sp-5) 0 var(--sp-2);
  color: var(--text);
  letter-spacing: -0.015em;
  font-weight: 600;
}
.legal p { color: var(--text-muted); max-width: 64ch; }
.legal ul { color: var(--text-muted); padding-left: 1.2rem; max-width: 64ch; }
.legal ul li { margin-bottom: 0.4rem; }
.legal a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.25s var(--ease-out);
}
.legal a:hover { color: var(--accent-bright); }
.legal strong { color: var(--text); }
.legal__disclaimer {
  margin-top: var(--sp-5);
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background: var(--bg-elev);
  font-size: var(--step--1);
}
.legal__back { margin-top: var(--sp-6); font-size: var(--step--1); }