/* ypuf.com — landing page. Reuses the extension's design system: Cormorant Garamond +
   Lato, the parchment / light-dark-star palette, the puff. Self-hosted fonts, no CDN. */

@font-face { font-family: "Cormorant Garamond"; src: url("fonts/cormorant-garamond-300.woff2") format("woff2"); font-weight: 300; font-display: swap; }
@font-face { font-family: "Cormorant Garamond"; src: url("fonts/cormorant-garamond-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Cormorant Garamond"; src: url("fonts/cormorant-garamond-600.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Cormorant Garamond"; src: url("fonts/cormorant-garamond-400-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Lato"; src: url("fonts/lato-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Lato"; src: url("fonts/lato-700.woff2") format("woff2"); font-weight: 700; font-display: swap; }

:root {
  color-scheme: light;
  --ink: #1a1613; --paper: #f8f5f0; --warm-gray: #e8e2da; --muted: #9a918a;
  --accent: #c8713a; --sage: #5a7a62; --card-bg: #fffdf9; --shadow: rgba(26,22,19,0.10);
  --on-accent: #fff; --hairline: #e8e2da; --glow: rgba(200,113,58,0.16);
  --font: "Lato", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --display: "Cormorant Garamond", "Iowan Old Style", Georgia, ui-serif, serif;
}
[data-theme="dark"] {
  color-scheme: dark;
  --ink: #f0ebe1; --paper: #1c1914; --warm-gray: #322a20; --muted: #9c9183;
  --accent: #d98a52; --sage: #93a893; --card-bg: #262118; --shadow: rgba(0,0,0,0.5);
  --on-accent: #1c1914; --hairline: #322a20; --glow: rgba(217,138,82,0.18);
}
[data-theme="star"] {
  color-scheme: dark;
  --ink: rgba(232,224,255,0.92); --paper: #0a0a12; --warm-gray: #232338; --muted: rgba(232,224,255,0.5);
  --accent: #c3b3ff; --sage: #a8d8d0; --card-bg: #13131f; --shadow: rgba(0,0,0,0.6);
  --on-accent: #14142a; --hairline: rgba(232,224,255,0.12); --glow: rgba(195,179,255,0.18);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  font-family: var(--font); background: var(--paper); color: var(--ink);
  -webkit-font-smoothing: antialiased; line-height: 1.6; overflow-x: hidden;
}
@media (prefers-reduced-motion: no-preference) { body { transition: background-color .4s ease, color .4s ease; } }
a { color: inherit; }
#starfield { position: fixed; inset: 0; z-index: 0; pointer-events: none; }
.wrap { width: min(1080px, 92vw); margin: 0 auto; position: relative; z-index: 1; }

/* ---- nav ---- */
.nav { position: sticky; top: 0; z-index: 20; backdrop-filter: saturate(1.2) blur(8px); -webkit-backdrop-filter: saturate(1.2) blur(8px);
  background: color-mix(in srgb, var(--paper) 78%, transparent); border-bottom: 1px solid var(--hairline); }
.nav .wrap { display: flex; align-items: center; gap: 14px; padding: 14px 0; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-family: var(--display); font-weight: 600; font-size: 22px; letter-spacing: -0.01em; }
.brand .mark { width: 22px; height: 22px; color: var(--accent); }
.nav .spacer { flex: 1; }
.nav a.link { font-size: 14px; color: var(--muted); text-decoration: none; padding: 6px 4px; }
.nav a.link:hover { color: var(--ink); }
.theme-toggle { background: none; border: none; color: var(--muted); cursor: pointer; padding: 6px; line-height: 0; border-radius: 8px; }
.theme-toggle:hover { color: var(--ink); }
.theme-toggle svg { display: block; }

/* ---- buttons ---- */
.btn { display: inline-flex; align-items: center; gap: 8px; font: inherit; font-weight: 700; font-size: 15px;
  padding: 11px 20px; border-radius: 999px; cursor: pointer; text-decoration: none; border: 1px solid transparent; transition: transform .12s ease, box-shadow .2s ease, background .2s ease; }
.btn-primary { background: var(--accent); color: var(--on-accent); box-shadow: 0 8px 24px -8px var(--glow); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 30px -8px var(--glow); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--hairline); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
@media (prefers-reduced-motion: reduce) { .btn:hover { transform: none; } }

/* ---- hero ---- */
.hero { padding: 92px 0 64px; text-align: center; position: relative; }
.hero .puff { width: 76px; height: 76px; color: var(--accent); margin: 0 auto 26px; }
.hero h1 { font-family: var(--display); font-weight: 600; letter-spacing: -0.02em; line-height: 1.04;
  font-size: clamp(44px, 7.5vw, 84px); }
.hero h1 .em { font-style: italic; font-weight: 400; color: var(--accent); }
.hero .sub { max-width: 620px; margin: 22px auto 0; font-size: clamp(17px, 2.2vw, 20px); color: var(--muted); }
.hero .cta { margin-top: 34px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero .note { margin-top: 16px; font-size: 13px; color: var(--muted); }

/* ---- recall-bar mock in hero ---- */
.demo { margin: 56px auto 0; max-width: 560px; }
.bar { background: var(--card-bg); border: 1px solid var(--hairline); border-radius: 16px; box-shadow: 0 30px 80px -20px var(--shadow); overflow: hidden; text-align: left; }
.bar .barhead { display: flex; align-items: center; gap: 8px; padding: 12px 16px 2px; }
.bar .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.bar .barhead span { font-size: 12px; color: var(--muted); letter-spacing: .03em; }
.bar .barhead b { color: var(--ink); }
.bar .q { font-size: 17px; padding: 9px 16px 13px; color: var(--ink); border-bottom: 1px solid var(--hairline); }
.bar .q .cur { color: var(--muted); }
.bar .row { padding: 9px 14px; border-left: 2px solid transparent; }
.bar .row.on { background: color-mix(in srgb, var(--ink) 6%, transparent); border-left-color: var(--accent); }
.bar .row .t { font-size: 14px; } .bar .row .t .hl { color: var(--accent); font-weight: 700; }
.bar .row .m { font-size: 11px; color: var(--muted); margin-top: 2px; } .bar .row .m .f { color: var(--accent); }
.bar .row .s { font-size: 12px; color: var(--muted); margin-top: 3px; } .bar .row .s .hl { color: var(--accent); font-weight: 700; }
.bar .barfoot { display: flex; gap: 16px; padding: 9px 16px; border-top: 1px solid var(--hairline); font-size: 11px; color: var(--muted); }
.bar .barfoot b { color: var(--ink); }

/* ---- sections ---- */
section { padding: 64px 0; position: relative; }
.eyebrow { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); font-weight: 700; }
h2 { font-family: var(--display); font-weight: 600; letter-spacing: -0.015em; line-height: 1.1; font-size: clamp(30px, 4.5vw, 46px); margin-top: 8px; }
.lead { color: var(--muted); font-size: 18px; max-width: 640px; margin-top: 14px; }
.center { text-align: center; } .center .lead { margin-left: auto; margin-right: auto; }

.ebbflow { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 36px; }
.ebbflow .card { background: var(--card-bg); border: 1px solid var(--hairline); border-radius: 20px; padding: 30px; }
.ebbflow .card h3 { font-family: var(--display); font-size: 26px; font-weight: 600; }
.ebbflow .card p { color: var(--muted); margin-top: 8px; }
.ebbflow .card .glyph { font-family: var(--display); font-size: 30px; font-style: italic; color: var(--accent); }

.feat { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 40px; }
.feat .card { background: var(--card-bg); border: 1px solid var(--hairline); border-radius: 16px; padding: 26px; }
.feat .card .k { display: inline-flex; align-items: center; gap: 9px; }
.feat .card .k .ic { width: 18px; height: 18px; color: var(--accent); flex: none; }
.feat .card h3 { font-size: 18px; font-weight: 700; }
.feat .card p { color: var(--muted); margin-top: 8px; font-size: 15px; }
.feat .card kbd { font: inherit; font-size: 12px; background: color-mix(in srgb, var(--ink) 8%, transparent); border: 1px solid var(--hairline); border-radius: 6px; padding: 1px 6px; }

/* ---- privacy ---- */
.privacy { text-align: center; }
.privacy .panel { margin-top: 28px; background: var(--card-bg); border: 1px solid var(--hairline); border-radius: 24px; padding: 44px 32px; box-shadow: 0 30px 80px -30px var(--shadow); }
.privacy .panel .big { font-family: var(--display); font-size: clamp(26px, 4vw, 38px); font-weight: 600; line-height: 1.2; }
.privacy .chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 24px; }
.privacy .chip { font-size: 13px; color: var(--muted); border: 1px solid var(--hairline); border-radius: 999px; padding: 7px 14px; }
.privacy .chip b { color: var(--ink); }

/* ---- final CTA + footer ---- */
.final { text-align: center; }
.final h2 { font-size: clamp(34px, 5vw, 54px); }
footer { border-top: 1px solid var(--hairline); padding: 36px 0; margin-top: 32px; }
footer .wrap { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 14px; color: var(--muted); }
footer a { text-decoration: none; color: var(--muted); }
footer a:hover { color: var(--ink); }
footer .spacer { flex: 1; }

@media (max-width: 720px) {
  .ebbflow, .feat { grid-template-columns: 1fr; }
  .nav a.link.hide-sm { display: none; }
}

/* entrance — calm, reduced-motion-gated */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.3,1); }
  .reveal.in { opacity: 1; transform: none; }
}

/* ---- prose (privacy page) ---- */
.prose { width: min(720px, 92vw); margin: 48px auto 0; }
.prose h1 { font-family: var(--display); font-weight: 600; font-size: clamp(34px, 6vw, 52px); letter-spacing: -0.02em; }
.prose .meta { color: var(--muted); font-size: 14px; margin-top: 6px; }
.prose h2 { font-family: var(--display); font-weight: 600; font-size: 26px; margin-top: 34px; }
.prose p { margin-top: 12px; color: var(--ink); }
.prose .big { font-family: var(--display); font-size: clamp(22px, 3.4vw, 30px); font-weight: 600; line-height: 1.25; margin-top: 18px; }
.prose ul { margin: 12px 0 0 20px; } .prose li { margin-top: 8px; color: var(--ink); }
.prose .muted { color: var(--muted); }
.prose table { width: 100%; border-collapse: collapse; margin-top: 14px; font-size: 15px; }
.prose th, .prose td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--hairline); vertical-align: top; }
.prose th { color: var(--muted); font-weight: 700; font-size: 13px; }
.prose a { color: var(--accent); }

/* ===== v2 ===== */
/* the puff: cluttered tab strip → calm */
.tabstrip { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; max-width: 700px; margin: 0 auto 28px; min-height: 28px; }
.tabstrip .chip { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted);
  background: var(--card-bg); border: 1px solid var(--hairline); border-radius: 8px; padding: 4px 9px; white-space: nowrap; }
.tabstrip .chip .fav { width: 8px; height: 8px; border-radius: 2px; background: var(--accent); opacity: .7; flex: none; }
@media (prefers-reduced-motion: no-preference) {
  .tabstrip .chip.go { animation: chip-puff .55s cubic-bezier(.3,.6,.4,1) forwards; }
  @keyframes chip-puff { from { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
    to { opacity: 0; transform: translateY(-22px) scale(.8); filter: blur(4px); } }
  .breathe { animation: puff-breathe 5s ease-in-out infinite; transform-origin: center; }
  @keyframes puff-breathe { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.06); opacity: .9; } }
}

/* typewriter caret */
.bar .q #demo-typed { color: var(--ink); }
.bar .q .cur { color: var(--accent); font-weight: 400; }
@media (prefers-reduced-motion: no-preference) {
  #demo-caret { animation: caret-blink 1s steps(1) infinite; }
  @keyframes caret-blink { 0%,49% { opacity: 1; } 50%,100% { opacity: 0; } }
}

/* how-it-works steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 40px; text-align: left; }
.steps .step { background: var(--card-bg); border: 1px solid var(--hairline); border-radius: 18px; padding: 28px; }
.steps .num { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 15%, transparent); color: var(--accent); font-family: var(--display); font-size: 19px; font-weight: 600; }
.steps h3 { font-size: 18px; font-weight: 700; margin-top: 16px; }
.steps p { color: var(--muted); margin-top: 8px; font-size: 15px; }
.steps kbd, .faq kbd { font: inherit; font-size: 12px; background: color-mix(in srgb, var(--ink) 8%, transparent); border: 1px solid var(--hairline); border-radius: 6px; padding: 1px 6px; }

/* night scene */
.nightscene { position: relative; overflow: hidden; background: #0a0a12; padding: 96px 0; margin: 20px 0; }
.nightscene #nightstars { position: absolute; inset: 0; width: 100%; height: 100%; }
.nightscene .wrap { position: relative; z-index: 1; }

/* FAQ */
.faq { max-width: 720px; margin: 28px auto 0; }
.faq details { border-bottom: 1px solid var(--hairline); }
.faq summary { cursor: pointer; padding: 17px 2px; font-weight: 700; font-size: 17px; list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 22px; font-weight: 400; transition: transform .2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); padding: 0 2px 18px; font-size: 15px; }

/* relief */
.relief { margin-top: 16px; font-size: 14px; letter-spacing: .04em; color: var(--muted); }
.relief::before { content: "\2713  "; color: var(--sage); font-weight: 700; }

@media (max-width: 720px) { .steps { grid-template-columns: 1fr; } }

/* ===== v3 ===== */
/* cursor-reactive puff (the mark trails the pointer; breathe stays on the inner svg) */
.puffwrap { width: 76px; margin: 0 auto 26px; will-change: transform; }
.hero .puff { display: block; margin: 0; }
@media (prefers-reduced-motion: no-preference) { .puffwrap { transition: transform .3s cubic-bezier(.2,.7,.3,1); } }

/* interactive recall input */
.bar input.q { display: block; width: 100%; font: inherit; font-size: 17px; padding: 11px 16px 13px; color: var(--ink);
  background: transparent; border: none; border-bottom: 1px solid var(--hairline); border-radius: 0; outline: none; appearance: none; -webkit-appearance: none; }
.bar input.q::placeholder { color: var(--muted); }
.bar input.q:focus { border-bottom-color: var(--accent); }
.bar .barhead .live { margin-left: auto; font-size: 9.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 32%, transparent); border-radius: 999px; padding: 2px 8px; }
.bar .barfoot .hint-try { margin-left: auto; color: color-mix(in srgb, var(--ink) 40%, transparent); }
@media (prefers-reduced-motion: no-preference) {
  .bar .barhead .live { animation: live-pulse 2.6s ease-in-out infinite; }
  @keyframes live-pulse { 0%,100% { opacity: .55; } 50% { opacity: 1; } }
}

/* privacy boundary: your device │ the internet */
.privacy .boundary { display: grid; grid-template-columns: 1fr auto 1fr; margin: 30px auto 4px; max-width: 660px; text-align: left; }
.boundary .side { padding: 22px 24px; }
.boundary .side-label { font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; font-weight: 700; color: var(--muted); }
.boundary .device { background: color-mix(in srgb, var(--accent) 7%, var(--card-bg)); border: 1px solid var(--hairline); border-right: none; border-radius: 16px 0 0 16px; }
.boundary .device .side-label { color: var(--accent); }
.boundary .side-list { list-style: none; margin: 12px 0 0; padding: 0; }
.boundary .side-list li { font-size: 14px; color: var(--ink); padding: 4px 0 4px 22px; position: relative; }
.boundary .side-list li::before { content: "\2713"; position: absolute; left: 0; color: var(--sage); font-weight: 700; }
.boundary .side-foot { display: inline-block; margin-top: 14px; font-size: 12px; color: var(--sage); font-weight: 700; }
.boundary .divider { position: relative; width: 36px; display: flex; align-items: center; justify-content: center; }
.boundary .divider-line { position: absolute; top: 6px; bottom: 6px; left: 50%; transform: translateX(-50%); border-left: 2px dashed color-mix(in srgb, var(--ink) 22%, transparent); }
.boundary .divider-tag { position: relative; writing-mode: vertical-rl; transform: rotate(180deg); font-size: 9px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); background: var(--paper); padding: 9px 2px; border-radius: 999px; }
.boundary .net { background: color-mix(in srgb, var(--ink) 3%, var(--card-bg)); border: 1px solid var(--hairline); border-left: none; border-radius: 0 16px 16px 0; display: flex; flex-direction: column; }
.boundary .net-empty { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; text-align: center; padding: 6px 0; }
.boundary .cross { width: 30px; height: 30px; color: color-mix(in srgb, var(--ink) 26%, transparent); }
.boundary .net-empty p { font-size: 13px; color: var(--muted); line-height: 1.5; }

@media (max-width: 720px) {
  .privacy .boundary { grid-template-columns: 1fr; max-width: 380px; }
  .boundary .device { border-right: 1px solid var(--hairline); border-bottom: none; border-radius: 16px 16px 0 0; }
  .boundary .net { border-left: 1px solid var(--hairline); border-top: none; border-radius: 0 0 16px 16px; }
  .boundary .divider { width: auto; height: 34px; }
  .boundary .divider-line { top: 50%; bottom: auto; left: 6px; right: 6px; transform: translateY(-50%); border-left: none; border-top: 2px dashed color-mix(in srgb, var(--ink) 22%, transparent); }
  .boundary .divider-tag { writing-mode: horizontal-tb; transform: none; padding: 2px 9px; }
}