/* ============================================================
   SheetGenie landing — "Quiet Rigor"
   Mirrors app/lib/theme/tokens.dart exactly.
   ============================================================ */

:root {
  --paper:    #EDE7D9;
  --surface:  #F7F3E9;
  --page:     #FBF8F2;
  --ink:      #1C1B18;
  --ink-soft: #6B675D;
  --indigo:   #3B40C9;
  --wash:     #E9EBF8;
  --exam-red: #C24631;
  --hairline: #E7E1D3;
  --on-indigo:#FBF8F2;

  --font-display: "Gloock", Georgia, serif;
  --font-body: "Instrument Sans", -apple-system, "Segoe UI", sans-serif;
  --font-mono: "DM Mono", "SF Mono", monospace;

  /* dark hero palette */
  --night:     #100F0D;
  --night-2:   #171612;
  --on-night:  #F3EEE1;
  --on-night-2:#A8A395;
  --kicker-dk: #9BA0F0;

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --shadow-card: 0 1px 2px rgba(28, 27, 24, .05), 0 10px 30px rgba(28, 27, 24, .07);
  --shadow-phone: 0 2px 6px rgba(28, 27, 24, .12), 0 30px 60px -12px rgba(28, 27, 24, .28);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  /* faint patient grid */
  background-image:
    linear-gradient(var(--hairline) 1px, transparent 1px),
    linear-gradient(90deg, var(--hairline) 1px, transparent 1px);
  background-size: 56px 56px;
  background-attachment: fixed;
}

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

.container { width: min(1120px, 100% - 48px); margin-inline: auto; }
.container.narrow { width: min(720px, 100% - 48px); }
.center { text-align: center; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}

/* honeypot — humans never see or fill this field */
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; opacity: 0; }

/* ---------- type ---------- */

h1, h2, h3 { font-family: var(--font-display); font-weight: 400; line-height: 1.12; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.4rem, 5.4vw, 4.1rem); }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); margin-bottom: 20px; }
h3 { font-size: 1.35rem; margin-bottom: 8px; }

.mono { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); }

.kicker {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--indigo);
  margin-bottom: 18px;
}
.kicker.on-indigo { color: var(--wash); }

.lede { font-size: clamp(1.05rem, 1.6vw, 1.2rem); color: var(--ink-soft); max-width: 34em; }

/* the single decisive red stroke */
.u-red { position: relative; white-space: nowrap; }
.red-stroke {
  position: absolute; left: 0; bottom: -.12em; width: 100%; height: .28em;
  overflow: visible;
}
.red-stroke path {
  fill: none; stroke: var(--exam-red); stroke-width: 5; stroke-linecap: round;
  stroke-dasharray: 320; stroke-dashoffset: 320;
  animation: draw 0.9s ease-out 0.7s forwards;
}
@keyframes draw { to { stroke-dashoffset: 0; } }

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  color: var(--on-indigo);
  background: var(--indigo);
  border: none;
  border-radius: 999px;
  padding: 16px 32px;
  cursor: pointer;
  text-decoration: none;
  transition: transform .25s cubic-bezier(.2,.8,.2,1), box-shadow .25s, background .25s;
  box-shadow: 0 1px 2px rgba(28,27,24,.15);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(59,64,201,.35); }
.btn:active { transform: translateY(0); }
.btn-small { padding: 10px 22px; font-size: .9rem; }
.btn-paper { background: var(--page); color: var(--indigo); }
.btn-paper:hover { box-shadow: 0 8px 24px rgba(28,27,24,.25); }

/* ---------- nav ---------- */

.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--night) 84%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(243, 238, 225, .08);
}
.nav .brand { color: var(--on-night); }
.nav-inner {
  width: min(1120px, 100% - 48px); margin-inline: auto;
  display: flex; align-items: center; justify-content: space-between;
  padding-block: 12px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-icon { width: 34px; height: 34px; border-radius: 9px; box-shadow: 0 1px 3px rgba(28,27,24,.2); }
.brand-name { font-family: var(--font-display); font-size: 1.25rem; }

/* ---------- hero (night mode: black stage, illuminated phone) ---------- */

.hero {
  padding: clamp(56px, 8vw, 104px) 0 clamp(48px, 6vw, 84px);
  background:
    linear-gradient(rgba(243,238,225,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(243,238,225,.035) 1px, transparent 1px),
    radial-gradient(ellipse 90% 70% at 70% 30%, var(--night-2), var(--night) 70%);
  background-size: 56px 56px, 56px 56px, 100% 100%;
  color: var(--on-night);
  overflow: hidden;
}
.hero h1 { color: var(--on-night); }
.hero .lede { color: var(--on-night-2); }
.hero .kicker { color: var(--kicker-dk); }
.hero .trust { color: var(--on-night-2); }
.hero .wl-form input { border-color: transparent; }
.hero .form-note { color: var(--on-night-2); }
.hero .form-note.ok { color: var(--kicker-dk); }
.hero .form-note.err { color: #E8907E; }
.hero .btn:hover { box-shadow: 0 8px 28px rgba(99, 105, 232, .5); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.hero-copy h1 { margin-bottom: 22px; }
.hero-copy .lede { margin-bottom: 34px; }

.trust { margin-top: 26px; }

/* slideshow: one phone, crossfading feature screens, lit from behind */
.hero-visual { position: relative; display: flex; justify-content: center; }

.glow {
  position: absolute; z-index: 0;
  width: min(560px, 120vw); aspect-ratio: 1;
  top: 46%; left: 50%; translate: -50% -50%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--glow, var(--indigo)) 0%, transparent 62%);
  opacity: .5;
  filter: blur(30px);
  transition: background 1.2s ease;
  animation: breathe 8s ease-in-out infinite;
}
@keyframes breathe { 0%,100% { transform: scale(1); opacity: .44; } 50% { transform: scale(1.12); opacity: .6; } }

.slideshow { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; }

.phone {
  background: #060605;
  border-radius: 44px;
  padding: 11px;
  box-shadow: var(--shadow-phone);
}
.phone img { border-radius: 34px; }

.phone-hero {
  position: relative;
  width: min(280px, 66vw);
  aspect-ratio: 390 / 844;
  border: 1px solid rgba(243, 238, 225, .16);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, .6),
    0 30px 70px -18px rgba(0, 0, 0, .85),
    0 0 90px -18px var(--glow, var(--indigo));
  transition: box-shadow 1.2s ease;
}
.phone-hero img {
  position: absolute; inset: 11px;
  width: calc(100% - 22px); height: calc(100% - 22px);
  object-fit: cover;
  opacity: 0; transform: scale(.985);
  transition: opacity .7s ease, transform .7s ease;
}
.phone-hero img.active { opacity: 1; transform: none; }

.slide-caption { text-align: center; margin-top: 26px; min-height: 66px; transition: opacity .35s ease; }
.slide-caption.fading { opacity: 0; }
.slide-kicker { color: var(--kicker-dk); margin-bottom: 6px; }
.slide-text { color: var(--on-night-2); font-size: .98rem; max-width: 30em; }

.slide-dots { display: flex; gap: 8px; margin-top: 18px; }
.slide-dots button {
  width: 8px; height: 8px; padding: 0;
  border: none; border-radius: 999px; cursor: pointer;
  background: rgba(243, 238, 225, .25);
  transition: width .35s cubic-bezier(.2,.8,.2,1), background .35s;
}
.slide-dots button.active { width: 26px; background: var(--glow, var(--indigo)); }

@keyframes floaty { 0%,100% { translate: 0 0; } 50% { translate: 0 -12px; } }
.float { animation: floaty 7s ease-in-out infinite; }
.float-slow { animation: floaty 9s ease-in-out 1.2s infinite; }

/* ---------- waitlist form ---------- */

.wl-form { display: flex; flex-wrap: wrap; gap: 12px; max-width: 480px; }
.wl-form input {
  flex: 1 1 240px;
  font-family: var(--font-body); font-size: 1rem;
  color: var(--ink);
  background: var(--page);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: 15px 24px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.wl-form input::placeholder { color: var(--ink-soft); opacity: .7; }
.wl-form input:focus { border-color: var(--indigo); box-shadow: 0 0 0 3px var(--wash); }
.form-note { flex-basis: 100%; font-size: .82rem; color: var(--ink-soft); margin-top: 2px; }
.form-note.ok { color: var(--indigo); font-weight: 600; }
.form-note.err { color: var(--exam-red); }

.wl-form-indigo { margin-inline: auto; justify-content: center; }
.wl-form-indigo input { border-color: transparent; }
.wl-form-indigo .form-note { color: var(--wash); }
.wl-form-indigo .form-note.ok { color: var(--on-indigo); }
.wl-form-indigo .form-note.err { color: #FFD9CE; }

/* ---------- marquee ---------- */

/* dark bridge between the night hero and the paper body */
.marquee {
  border-block: 1px solid rgba(243, 238, 225, .08);
  background: var(--ink);
  overflow: hidden;
  padding-block: 13px;
}
.marquee .mono { color: rgba(237, 231, 217, .55); }
.marquee-track { display: flex; white-space: nowrap; width: max-content; animation: marquee 36s linear infinite; }
.marquee-track span { padding-right: 8px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- problem ---------- */

.problem { padding: clamp(72px, 10vw, 130px) 0; }
.pull {
  margin-top: 44px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.3;
  border-left: 3px solid var(--indigo);
  padding-left: 26px;
}

/* ---------- steps ---------- */

.steps {
  background: var(--surface);
  border-block: 1px solid var(--hairline);
  padding: clamp(72px, 10vw, 120px) 0;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(28px, 4vw, 56px);
  margin: 56px 0 60px;
}
.phone-step {
  width: min(250px, 80%);
  margin: 0 auto 26px;
  transition: transform .5s cubic-bezier(.2,.8,.2,1);
}
.step:hover .phone-step { transform: translateY(-8px) rotate(-1deg); }
.step-label { color: var(--indigo); margin-bottom: 10px; }
.step p:last-child { color: var(--ink-soft); font-size: .98rem; }
.step { text-align: center; }
.step h3 { font-size: 1.5rem; }
.step p:last-child { max-width: 30em; margin-inline: auto; }

/* ---------- benefits ---------- */

.benefits { padding: clamp(72px, 10vw, 130px) 0; }
.benefit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 48px;
}
.card {
  background: var(--page);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 34px 32px;
  box-shadow: var(--shadow-card);
  transition: transform .35s cubic-bezier(.2,.8,.2,1), box-shadow .35s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 2px 4px rgba(28,27,24,.06), 0 20px 44px rgba(28,27,24,.12); }
.card-icon {
  width: 30px; height: 30px; margin-bottom: 18px;
  fill: none; stroke: var(--indigo); stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round;
}
.card p { color: var(--ink-soft); font-size: .98rem; }

/* ---------- audience ---------- */

.audience {
  background: var(--surface);
  border-block: 1px solid var(--hairline);
  padding: clamp(72px, 10vw, 120px) 0;
}
.persona-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 48px;
}
.persona {
  background: var(--page);
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  padding: 28px 26px;
}
.persona-label { color: var(--indigo); margin-bottom: 12px; }
.persona p:last-child { color: var(--ink-soft); font-size: .97rem; }

/* ---------- waitlist section ---------- */

.waitlist {
  background: var(--indigo);
  color: var(--on-indigo);
  padding: clamp(80px, 11vw, 140px) 0;
}
.waitlist h2 { color: var(--on-indigo); }
.perks {
  list-style: none;
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 10px 28px;
  margin: 26px 0 36px;
  color: var(--wash);
}
.perks li::before { content: "✓  "; color: var(--on-indigo); }

/* ---------- faq ---------- */

.faq { padding: clamp(72px, 10vw, 130px) 0; }
.faq h2 { margin-bottom: 40px; }
.faq details {
  background: var(--page);
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 24px;
  font-weight: 600;
  display: flex; justify-content: space-between; align-items: center;
  transition: background .2s;
}
.faq summary:hover { background: var(--surface); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--indigo);
  transition: transform .3s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 24px 22px; color: var(--ink-soft); }

/* ---------- footer cta / footer ---------- */

.footer-cta {
  background: var(--surface);
  border-top: 1px solid var(--hairline);
  padding: clamp(72px, 10vw, 110px) 0;
}
.footer-cta h2 { margin-bottom: 30px; }

.footer { border-top: 1px solid var(--hairline); padding: 34px 0; }
.footer-inner {
  display: flex; flex-wrap: wrap; gap: 16px;
  align-items: center; justify-content: space-between;
}
.footer .mono { letter-spacing: .1em; }
.footer-links a { color: var(--ink-soft); text-decoration: none; }
.footer-links a:hover { color: var(--indigo); }

/* ---------- toast ---------- */

.toast {
  position: fixed; left: 50%; bottom: 34px; z-index: 100;
  transform: translateX(-50%) translateY(14px);
  background: var(--ink); color: var(--page);
  font-size: .9rem; font-weight: 500;
  padding: 11px 22px; border-radius: 999px;
  box-shadow: 0 10px 30px rgba(28, 27, 24, .3);
  opacity: 0; pointer-events: none;
  transition: opacity .3s ease, transform .3s cubic-bezier(.2,.8,.2,1);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- reveal-on-scroll ---------- */

.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.2,.8,.2,1), transform .8s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.d1 { transition-delay: .12s; }
.d2 { transition-delay: .24s; }
.d3 { transition-delay: .36s; }
.d4 { transition-delay: .48s; }

/* ---------- responsive ---------- */

@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { margin-top: 28px; }
  .phone-hero { width: min(260px, 62vw); }
  .steps-grid, .benefit-grid, .persona-grid { grid-template-columns: 1fr; }
  .steps-grid { gap: 56px; }
  .footer-inner { justify-content: center; text-align: center; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .float, .float-slow, .marquee-track, .glow { animation: none; }
  .red-stroke path { animation: none; stroke-dashoffset: 0; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .phone-hero img { transition: none; }
}