/*
  Halcyo site. Two worlds, matching the app:
  - night (landing): the deep teal of the icon, aqua bars, one warm amber accent for the tinnitus tone
  - paper (legal and support): a quiet, cool reading surface
  Type: Young Serif for headlines, Atkinson Hyperlegible for everything people read (chosen for an
  audience that skews 40-70), IBM Plex Mono for frequencies and small labels.
*/

@font-face { font-family: 'Young Serif'; src: url('/fonts/young-serif-latin-400-normal.woff2') format('woff2'); font-weight: 400; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Young Serif'; src: url('/fonts/young-serif-latin-ext-400-normal.woff2') format('woff2'); font-weight: 400; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Atkinson Hyperlegible'; src: url('/fonts/atkinson-hyperlegible-latin-400-normal.woff2') format('woff2'); font-weight: 400; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Atkinson Hyperlegible'; src: url('/fonts/atkinson-hyperlegible-latin-ext-400-normal.woff2') format('woff2'); font-weight: 400; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1E00-1E9F, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+A720-A7FF; }
@font-face { font-family: 'Atkinson Hyperlegible'; src: url('/fonts/atkinson-hyperlegible-latin-700-normal.woff2') format('woff2'); font-weight: 700; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Atkinson Hyperlegible'; src: url('/fonts/atkinson-hyperlegible-latin-ext-700-normal.woff2') format('woff2'); font-weight: 700; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1E00-1E9F, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+A720-A7FF; }
@font-face { font-family: 'Atkinson Hyperlegible'; src: url('/fonts/atkinson-hyperlegible-latin-400-italic.woff2') format('woff2'); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: 'IBM Plex Mono'; src: url('/fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'IBM Plex Mono'; src: url('/fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2'); font-weight: 500; font-display: swap; }

:root {
  --night-950: #08151c;
  --night-800: #0e2a33;
  --night-600: #164c56;
  --aqua-200: #b2ecf0;
  --aqua-400: #5cc0cb;
  --amber: #f2a950;
  --on-night: #e7eff2;
  --on-night-muted: #a3bac3;
  --paper: #f3f6f8;
  --ink: #142230;
  --ink-muted: #4e6372;
  --line: #d6e0e6;
  --link: #1d6f7a;

  --font-display: 'Young Serif', 'Iowan Old Style', Georgia, serif;
  --font-body: 'Atkinson Hyperlegible', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --gutter: max(20px, env(safe-area-inset-left, 0px));
  --gutter-r: max(20px, env(safe-area-inset-right, 0px));
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font-body); font-size: 18px; line-height: 1.6; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; border-radius: 4px; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter-r); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--amber); color: var(--night-950); padding: 8px 14px; border-radius: 8px; z-index: 10; }
.skip:focus { left: 12px; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 400; line-height: 1.12; text-wrap: balance; margin: 0; }
p { margin: 0; }
.label { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; }

/* ---------- Night (landing) ---------- */
.night { background: var(--night-950); color: var(--on-night); }
.night ::selection { background: var(--amber); color: var(--night-950); }

.site-header { padding-block: 22px; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
.brand span { font-family: var(--font-display); font-size: 24px; }
.site-nav { display: flex; gap: 26px; flex-wrap: wrap; }
.site-nav a { text-decoration: none; color: var(--on-night-muted); font-size: 16px; }
.site-nav a:hover { color: var(--on-night); }
@media (max-width: 720px) { .site-nav { display: none; } }

.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(110% 52% at 50% 66%, rgba(46, 140, 152, 0.36), transparent 70%),
    linear-gradient(180deg, var(--night-800) 0%, var(--night-950) 92%);
  padding-block: 28px 0;
}
.hero-copy { max-width: 760px; display: grid; gap: 22px; padding-block: 36px 40px; }
.hero h1 { font-size: clamp(42px, 7vw, 82px); letter-spacing: -0.01em; }
.hero h1 em { font-style: normal; color: var(--amber); }
.hero .lede { font-size: clamp(19px, 2.2vw, 22px); color: var(--on-night-muted); max-width: 60ch; }
.stores { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.store {
  display: inline-flex; flex-direction: column; justify-content: center;
  min-width: 172px; padding: 10px 18px; border-radius: 14px;
  border: 1px solid rgba(231, 239, 242, 0.28); background: rgba(231, 239, 242, 0.06);
}
.store small { font-size: 12px; color: var(--on-night-muted); letter-spacing: 0.04em; }
.store strong { font-size: 18px; font-weight: 700; }
.stores .note { font-size: 15px; color: var(--on-night-muted); }

/* Signature: the spectrum the visitor tunes */
.tuner { position: relative; padding-bottom: 56px; }
.spectrum {
  position: relative; height: clamp(200px, 32vw, 320px);
  display: flex; align-items: center; justify-content: center; gap: var(--bar-gap, 5px);
  cursor: ew-resize; touch-action: pan-y; user-select: none;
}
.spectrum:focus-visible { outline-offset: -3px; }
.bar {
  flex: 0 0 var(--bar-w, 4px); border-radius: 3px;
  background: linear-gradient(180deg, var(--aqua-200), var(--aqua-400));
  height: calc(var(--h, 0.5) * var(--gap, 1) * 100%);
  transition: height 260ms cubic-bezier(.2,.7,.2,1), opacity 260ms;
  opacity: calc(0.45 + var(--gap, 1) * 0.55);
  transform-origin: center;
  animation: breathe var(--dur, 3s) ease-in-out var(--delay, 0s) infinite alternate;
}
@keyframes breathe { from { transform: scaleY(1); } to { transform: scaleY(0.82); } }
.tone {
  position: absolute; top: 6%; bottom: 6%; width: 4px; margin-left: -2px; border-radius: 2px;
  background: var(--amber); left: var(--x, 50%);
  box-shadow: 0 0 18px 4px rgba(242, 169, 80, 0.45), 0 0 60px 14px rgba(242, 169, 80, 0.16);
  pointer-events: none;
}
.tone::after {
  content: ''; position: absolute; left: 50%; top: 50%; width: 22px; height: 22px; margin: -11px 0 0 -11px;
  border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 6px rgba(242, 169, 80, 0.22);
}
.tuner-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.tuner-bar p { color: var(--on-night-muted); font-size: 16px; }
.readout { font-family: var(--font-mono); font-weight: 500; font-size: 22px; color: var(--amber); font-variant-numeric: tabular-nums; }
.listen {
  font: inherit; font-size: 16px; color: var(--on-night); background: transparent; cursor: pointer;
  border: 1px solid rgba(231, 239, 242, 0.35); border-radius: 999px; padding: 9px 18px;
}
.listen[aria-pressed='true'] { background: var(--on-night); color: var(--night-950); }
.tuner-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }

.section { padding-block: clamp(64px, 9vw, 112px); }
.section + .section { border-top: 1px solid rgba(231, 239, 242, 0.08); }
.section-head { display: grid; gap: 14px; max-width: 720px; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(32px, 4.4vw, 48px); }
.section-head p { color: var(--on-night-muted); font-size: 19px; }
.section .label { color: var(--aqua-400); }

.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; counter-reset: step; }
.steps li { display: grid; gap: 12px; align-content: start; padding-top: 22px; border-top: 2px solid rgba(92, 192, 203, 0.35); counter-increment: step; }
.steps li::before { content: counter(step); font-family: var(--font-mono); font-size: 15px; color: var(--aqua-400); }
.steps h3 { font-size: 26px; }
.steps p { color: var(--on-night-muted); }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }

.weeks { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.week { border-radius: 18px; padding: 22px; background: rgba(231, 239, 242, 0.05); border: 1px solid rgba(231, 239, 242, 0.1); display: grid; gap: 12px; align-content: start; }
.week h3 { font-size: 22px; }
.week ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; color: var(--on-night-muted); font-size: 16px; }
.week li::before { content: '· '; color: var(--aqua-400); }
@media (max-width: 960px) { .weeks { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .weeks { grid-template-columns: 1fr; } }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 36px; } }
.chat { display: grid; gap: 12px; padding: 24px; border-radius: 24px; background: linear-gradient(160deg, var(--night-600), var(--night-800)); border: 1px solid rgba(231, 239, 242, 0.12); }
.chat .label { color: var(--on-night-muted); }
.bubble { max-width: 88%; padding: 12px 16px; border-radius: 18px; font-size: 17px; line-height: 1.5; }
.bubble.me { justify-self: end; background: var(--aqua-400); color: var(--night-950); border-bottom-right-radius: 6px; }
.bubble.coach { background: rgba(8, 21, 28, 0.55); border: 1px solid rgba(231, 239, 242, 0.12); border-bottom-left-radius: 6px; }

.promises { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.promises div { display: grid; gap: 10px; align-content: start; }
.promises h3 { font-size: 24px; }
.promises p { color: var(--on-night-muted); }
@media (max-width: 860px) { .promises { grid-template-columns: 1fr; } }

.price { display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap; padding: 28px; border-radius: 20px; border: 1px solid rgba(242, 169, 80, 0.35); background: rgba(242, 169, 80, 0.06); }
.price strong { font-family: var(--font-display); font-weight: 400; font-size: clamp(26px, 3.4vw, 34px); }
.price p { color: var(--on-night-muted); }

.faq { display: grid; gap: 10px; max-width: 820px; }
.faq details { border-radius: 14px; background: rgba(231, 239, 242, 0.04); border: 1px solid rgba(231, 239, 242, 0.1); }
.faq summary { cursor: pointer; padding: 18px 22px; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-family: var(--font-mono); color: var(--aqua-400); }
.faq details[open] summary::after { content: '–'; }
.faq details p { padding: 0 22px 20px; color: var(--on-night-muted); }

.site-footer { padding-block: 48px 64px; border-top: 1px solid rgba(231, 239, 242, 0.08); color: var(--on-night-muted); font-size: 15px; }
.site-footer .wrap { display: grid; gap: 18px; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-links a { color: var(--on-night); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .bar { animation: none; transition: none; }
}

/* ---------- Paper (legal and support) ---------- */
.paper { background: var(--paper); color: var(--ink); }
.paper .site-header { border-bottom: 1px solid var(--line); background: #fff; }
.paper .brand span { color: var(--ink); }
.paper .site-nav a { color: var(--ink-muted); }
.doc { max-width: 760px; margin: 0 auto; padding: 56px var(--gutter-r) 96px var(--gutter); }
.doc h1 { font-size: clamp(36px, 5vw, 52px); margin-bottom: 12px; }
.doc .updated { color: var(--ink-muted); font-size: 16px; margin-bottom: 36px; }
.doc h2 { font-size: 26px; margin: 44px 0 12px; }
.doc h3 { font-family: var(--font-body); font-weight: 700; font-size: 19px; margin: 24px 0 8px; }
.doc p, .doc li { color: var(--ink); }
.doc p + p { margin-top: 14px; }
.doc ul { padding-left: 22px; margin: 12px 0; display: grid; gap: 8px; }
.doc a { color: var(--link); }
.doc .summary { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 22px 26px; }
.doc .summary ul { margin-bottom: 0; }
.doc .placeholder { background: #fff3d6; border-radius: 4px; padding: 0 4px; }
.doc .callout { border-left: 4px solid var(--amber); padding: 6px 0 6px 18px; margin: 22px 0; }
.paper .site-footer { color: var(--ink-muted); border-top-color: var(--line); }
.paper .footer-links a { color: var(--link); }