/* ============================================================================
   Drifttt — Drift Time Tracker · shared landing design system.
   Zero external requests, system fonts only, OLED-first dark + warm-paper light
   (driven purely by prefers-color-scheme, no JS toggle). Every page links this
   one same-origin stylesheet — keep it the single source of truth.

   Palette = the app's real tokens (apps/app/src/index.css). Light-mode project
   colours are deepened for contrast on paper (grafted from variant B).
   ============================================================================ */

/* ---- Dark (OLED-first) is the default token set ---- */
:root{
  --bg:#000; --stage:#08080a; --surface:#131316; --surface-2:#18181c; --raised:#1a1a1e;
  --text:#DDD8CB; --text-2:#C9C5BC; --muted:#8C887E; --faint:#6B6760; --dim:#514e48;
  --border:rgba(255,255,255,.08); --border-2:rgba(255,255,255,.13); --hair:rgba(255,255,255,.06);
  --track:#33333A;
  --rasp:#C95E8A; --amber:#D89E55; --teal:#59B0C2; --purple:#A07CC9;
  --sage:#5FB37B; --terra:#D0655C; --ontime:#8C887E;
  --card-shadow:none; --card-shadow-hover:0 0 0 1px rgba(255,255,255,.06);
  --btn-primary-ink:#0a0a0c;
  --maxw:1120px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji";
}

@media (prefers-color-scheme: light){
  :root{
    --bg:#F3F0E8; --stage:#EEEADF; --surface:#FFFFFF; --surface-2:#FFFFFF; --raised:#FFFFFF;
    --text:#2A2620; --text-2:#45403A; --muted:#6E6A60; --faint:#8A857C; --dim:#908A7E;
    --border:rgba(40,35,28,.13); --border-2:rgba(40,35,28,.2); --hair:rgba(40,35,28,.08);
    --track:#D7D2C7;
    /* deepened project colours (variant B) — legible on warm paper */
    --rasp:#B24E79; --amber:#A8741E; --teal:#3C8B9C; --purple:#7E3FB5;
    --sage:#2E8C56; --terra:#C24436; --ontime:#6E6A60;
    --card-shadow:0 1px 2px rgba(40,35,28,.05), 0 6px 18px rgba(40,35,28,.07);
    --card-shadow-hover:0 2px 4px rgba(40,35,28,.07), 0 12px 30px rgba(40,35,28,.1);
    --btn-primary-ink:#fff;
  }
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%; scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto} }
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:var(--font); font-size:17px; line-height:1.6;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:inherit; text-decoration:none}
img,svg{max-width:100%}
h1,h2,h3{line-height:1.1; letter-spacing:-.022em; font-weight:680; margin:0}
p{margin:0}
.wrap{width:100%; max-width:var(--maxw); margin:0 auto; padding:0 24px}
section{position:relative}
:focus-visible{outline:2px solid var(--teal); outline-offset:3px; border-radius:6px}

/* screen-reader-only skip link (variant A — CSS only, no inline JS) */
.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}
.sr-only:focus{position:fixed; top:10px; left:12px; width:auto; height:auto; margin:0; clip:auto;
  z-index:100; background:var(--surface); color:var(--text); padding:10px 16px; border-radius:8px;
  border:1px solid var(--border-2); box-shadow:0 8px 30px rgba(0,0,0,.4)}

/* ---- wordmark + brand mark ---- */
.wm{font-weight:720; letter-spacing:-.03em; white-space:nowrap; font-size:1.5rem}
.wm .d{color:var(--text)}
.wm .t1{color:var(--rasp)} .wm .t2{color:var(--teal)} .wm .t3{color:var(--purple)}
.brand{display:inline-flex; align-items:center; gap:.6rem}
.brand .mark{width:30px; height:30px; flex:none; border-radius:8px; display:block}

/* ---- header ---- */
header.site-head{position:sticky; top:0; z-index:50;
  background:color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter:saturate(140%) blur(14px); -webkit-backdrop-filter:saturate(140%) blur(14px);
  border-bottom:1px solid var(--hair)}
.bar{display:flex; align-items:center; gap:24px; height:66px}
.nav{display:flex; gap:26px; margin-left:auto; align-items:center}
.nav a.link{color:var(--muted); font-size:.95rem; font-weight:500}
.nav a.link:hover{color:var(--text)}
.nav .cta{color:var(--text); border:1px solid var(--border-2); padding:8px 16px; border-radius:999px; font-weight:600; font-size:.92rem}
.nav .cta:hover{border-color:var(--teal); color:var(--text)}
@media(max-width:720px){ .nav a.link{display:none} }

/* ---- buttons ---- */
.btn{display:inline-flex; align-items:center; gap:9px; font-weight:640; font-size:1.02rem;
  padding:15px 26px; border-radius:999px; text-decoration:none; border:1px solid transparent;
  cursor:pointer; transition:transform .12s ease, filter .12s ease, box-shadow .2s ease, background .2s ease}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(1px)}
.btn-primary{color:var(--btn-primary-ink);
  background:linear-gradient(100deg,var(--rasp),var(--amber) 42%,var(--teal) 72%,var(--purple));
  box-shadow:0 8px 34px -10px color-mix(in srgb, var(--teal) 60%, transparent)}
.btn-primary:hover{filter:brightness(1.06); box-shadow:0 10px 40px -10px color-mix(in srgb, var(--teal) 72%, transparent)}
.btn-ghost{color:var(--text); border-color:var(--border-2); background:color-mix(in srgb, var(--text) 3%, transparent)}
.btn-ghost:hover{border-color:var(--text-2)}
.btn-sm{padding:9px 17px; font-size:.92rem}
.arrow{transition:transform .15s ease}
.btn:hover .arrow{transform:translateX(3px)}

/* ---- hero ---- */
.hero{padding:88px 0 80px; overflow:hidden}
.hero .glow{position:absolute; inset:-20% -10% auto -10%; height:720px; z-index:0; pointer-events:none;
  background:
    radial-gradient(56% 60% at 22% 8%, color-mix(in srgb, var(--rasp) 30%, transparent), transparent 62%),
    radial-gradient(52% 58% at 78% 4%, color-mix(in srgb, var(--purple) 28%, transparent), transparent 62%),
    radial-gradient(60% 70% at 54% 40%, color-mix(in srgb, var(--teal) 20%, transparent), transparent 66%),
    radial-gradient(40% 50% at 88% 46%, color-mix(in srgb, var(--amber) 16%, transparent), transparent 60%);
  filter:blur(8px); opacity:.9}
.hero .wrap{position:relative; z-index:1}
.hero-grid{display:grid; grid-template-columns:1.15fr .85fr; gap:56px; align-items:center}
@media(max-width:900px){ .hero-grid{grid-template-columns:1fr; gap:40px} }

.eyebrow{display:inline-flex; align-items:center; gap:8px; font-size:.8rem; font-weight:600;
  letter-spacing:.04em; text-transform:uppercase; color:var(--text-2);
  border:1px solid var(--border-2); border-radius:999px; padding:7px 14px; margin-bottom:26px;
  background:color-mix(in srgb, var(--text) 2%, transparent)}
.eyebrow .dot{width:7px; height:7px; border-radius:50%;
  background:linear-gradient(135deg,var(--rasp),var(--teal)); box-shadow:0 0 10px color-mix(in srgb, var(--teal) 70%, transparent)}
h1{font-size:clamp(2.5rem,6.4vw,4.35rem); font-weight:720}
h1 .spectrum{background:linear-gradient(96deg,var(--rasp),var(--amber) 38%,var(--teal) 66%,var(--purple));
  -webkit-background-clip:text; background-clip:text; color:transparent}
.sub{margin-top:24px; font-size:1.16rem; color:var(--text-2); max-width:34ch}
.cta-row{display:flex; flex-wrap:wrap; gap:14px; align-items:center; margin-top:34px}
.coming{margin-top:16px; font-size:.9rem; color:var(--muted); display:flex; align-items:center; gap:8px}
.coming .pill{border:1px dashed var(--border-2); border-radius:999px; padding:3px 11px; font-size:.82rem; color:var(--faint)}

/* trust row (variant A) */
.trust{display:flex; flex-wrap:wrap; gap:9px 20px; margin-top:26px; color:var(--muted); font-size:.9rem}
.trust span{display:inline-flex; align-items:center; gap:.45em}
.trust .k{color:var(--teal)}

/* ---- hero clock ---- */
.clockcard{position:relative; justify-self:center; width:100%; max-width:420px}
.clockcard .halo{position:absolute; inset:-8%; border-radius:50%; z-index:0;
  background:radial-gradient(circle at 50% 50%, color-mix(in srgb, var(--teal) 14%, transparent), transparent 66%); filter:blur(12px)}
.clockcard svg{position:relative; z-index:1; display:block; width:100%; height:auto; overflow:visible;
  filter:drop-shadow(0 24px 60px rgba(0,0,0,.7))}
@media (prefers-color-scheme: light){ .clockcard svg{filter:drop-shadow(0 20px 44px rgba(40,35,28,.18))} }
@keyframes sweep{ to{ transform:rotate(360deg) } }
.now-hand{transform-origin:200px 200px; animation:sweep 42s linear infinite}
@media (prefers-reduced-motion: reduce){ .now-hand{animation:none} }
.legend{position:relative; z-index:1; display:flex; flex-wrap:wrap; justify-content:center; gap:8px 16px;
  margin-top:22px; font-size:.82rem; color:var(--muted)}
.legend span{display:inline-flex; align-items:center; gap:7px}
.legend i{width:10px; height:10px; border-radius:3px; display:inline-block}

/* floating chat chips flanking the clock (variant B) */
.chat-chip{position:absolute; z-index:3; background:var(--raised); border:1px solid var(--border);
  border-radius:14px; padding:.6rem .8rem; box-shadow:0 12px 34px -14px rgba(0,0,0,.6); font-size:.8rem;
  max-width:78%; display:flex; gap:.55rem; align-items:flex-start}
@media (prefers-color-scheme: light){ .chat-chip{box-shadow:var(--card-shadow)} }
.chat-chip .who{font-size:.62rem; letter-spacing:.1em; text-transform:uppercase; color:var(--teal);
  display:block; margin-bottom:.15rem; font-weight:640}
.chat-chip.a{top:-16px; left:-10px}
.chat-chip.b{bottom:-18px; right:-8px}
.chat-chip.b .who{color:var(--purple)}
.chat-chip .avatar{width:20px; height:20px; flex:none; border-radius:6px;
  background:linear-gradient(135deg,var(--teal),var(--purple)); display:grid; place-items:center;
  font-size:11px; color:#fff; font-weight:700}
@media(max-width:900px){ .chat-chip{display:none} }

/* ---- generic section head ---- */
.band{padding:92px 0; border-top:1px solid var(--hair)}
.shead{max-width:660px; margin:0 auto 52px; text-align:center}
.kicker{font-size:.82rem; font-weight:640; letter-spacing:.08em; text-transform:uppercase;
  color:var(--teal); margin-bottom:14px}
.shead h2{font-size:clamp(1.9rem,4vw,2.7rem)}
.shead p{margin-top:16px; color:var(--text-2); font-size:1.08rem}

/* ---- how drift works ---- */
.drift-grid{display:grid; grid-template-columns:1fr 1fr; gap:44px; align-items:center}
@media(max-width:860px){ .drift-grid{grid-template-columns:1fr; gap:32px} }
.chartcard{background:linear-gradient(180deg,var(--surface),var(--bg));
  border:1px solid var(--border); border-radius:20px; padding:28px 26px 22px; box-shadow:var(--card-shadow)}
@media (prefers-color-scheme: light){ .chartcard{background:linear-gradient(180deg,#fff,var(--bg))} }
.chartcard svg{width:100%; height:auto; display:block}
.chartkey{display:flex; flex-wrap:wrap; gap:8px 18px; margin-top:14px; font-size:.82rem; color:var(--muted)}
.chartkey span{display:inline-flex; align-items:center; gap:.45em}
.chartkey i{width:16px; height:0; border-top-width:2.5px; border-top-style:solid; display:inline-block}
.chartkey i.plan{border-top-style:dashed; border-color:var(--muted)}
.chartkey i.perf{border-color:var(--teal)}
.chartkey i.dot{width:9px; height:9px; border-radius:50%; border:0}
.steps{display:grid; gap:22px}
.step{display:flex; gap:16px}
.step .n{flex:none; width:34px; height:34px; border-radius:10px; display:grid; place-items:center;
  font-weight:700; font-size:.95rem; color:#0a0a0c;
  background:linear-gradient(135deg,var(--teal),var(--purple))}
.step h3{font-size:1.12rem; margin-bottom:5px}
.step p{color:var(--text-2); font-size:1rem}
/* status-band pills (variant B) */
.bands-row{display:flex; gap:.5rem; margin-top:6px; flex-wrap:wrap}
.spill{font-size:.78rem; font-weight:600; padding:.35em .8em; border-radius:999px;
  display:inline-flex; align-items:center; gap:.45em}
.spill i{width:8px; height:8px; border-radius:50%}
.spill.ahead{color:var(--sage); background:color-mix(in srgb, var(--sage) 15%, transparent)}
.spill.ontime{color:var(--ontime); background:color-mix(in srgb, var(--ontime) 16%, transparent)}
.spill.behind{color:var(--terra); background:color-mix(in srgb, var(--terra) 15%, transparent)}

/* ---- features ---- */
.fgrid{display:grid; grid-template-columns:repeat(4,1fr); gap:18px}
@media(max-width:980px){ .fgrid{grid-template-columns:repeat(2,1fr)} }
@media(max-width:560px){ .fgrid{grid-template-columns:1fr} }
.fcard{background:var(--surface); border:1px solid var(--border); border-radius:18px; padding:26px 22px;
  display:flex; flex-direction:column; gap:12px; box-shadow:var(--card-shadow);
  transition:border-color .16s ease, transform .16s ease, box-shadow .2s ease}
.fcard:hover{transform:translateY(-3px); box-shadow:var(--card-shadow-hover); border-color:var(--border-2)}
.fcard.ai{grid-column:1 / -1;
  background:linear-gradient(120deg, color-mix(in srgb, var(--purple) 12%, var(--surface)), color-mix(in srgb, var(--teal) 8%, var(--surface)) 55%, color-mix(in srgb, var(--rasp) 10%, var(--surface)));
  border-color:var(--border-2); flex-direction:row; align-items:center; gap:28px; padding:30px; flex-wrap:wrap}
.fcard.ai:hover{border-color:var(--teal)}
.ficon{width:44px; height:44px; border-radius:12px; display:grid; place-items:center; flex:none;
  background:color-mix(in srgb, var(--text) 4%, transparent); border:1px solid var(--border)}
.ficon svg{width:24px; height:24px}
.fcard h3{font-size:1.12rem}
.fcard p{color:var(--text-2); font-size:.98rem}
.ai-body{flex:1 1 340px; min-width:0}
.ai-body .tag{display:inline-block; font-size:.74rem; font-weight:640; letter-spacing:.06em;
  text-transform:uppercase; color:var(--purple); margin-bottom:8px}
.ai-body h3{font-size:1.5rem; margin-bottom:8px}
.ai-body p{font-size:1.04rem; max-width:52ch}
.chatdemo{flex:1 1 300px; min-width:0; background:color-mix(in srgb, var(--bg) 40%, transparent);
  border:1px solid var(--border); border-radius:14px; padding:16px; font-size:.9rem; display:grid; gap:10px}
@media (prefers-color-scheme: light){ .chatdemo{background:var(--stage)} }
.msg{padding:10px 13px; border-radius:12px; line-height:1.4}
.msg.u{background:color-mix(in srgb, var(--text) 5%, transparent); color:var(--text); justify-self:end;
  max-width:88%; border-bottom-right-radius:4px}
.msg.a{background:linear-gradient(120deg, color-mix(in srgb, var(--teal) 14%, transparent), color-mix(in srgb, var(--purple) 12%, transparent));
  color:var(--text-2); max-width:92%; border:1px solid var(--border); border-bottom-left-radius:4px}
.msg.a b{color:var(--teal); font-weight:640}

/* ---- pricing ---- */
.pgrid{display:grid; grid-template-columns:1fr 1fr; gap:22px; max-width:860px; margin:0 auto}
@media(max-width:720px){ .pgrid{grid-template-columns:1fr} }
.plan{background:var(--surface); border:1px solid var(--border); border-radius:22px; padding:32px 28px;
  display:flex; flex-direction:column; box-shadow:var(--card-shadow)}
.plan.pro{border-color:transparent; position:relative;
  background:linear-gradient(180deg, color-mix(in srgb, var(--purple) 10%, var(--surface)), var(--surface) 60%)}
.plan.pro::before{content:""; position:absolute; inset:0; border-radius:22px; padding:1px; pointer-events:none;
  background:linear-gradient(135deg,var(--rasp),var(--teal) 55%,var(--purple));
  -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite:xor; mask-composite:exclude}
.plan .pname{font-size:.82rem; font-weight:640; letter-spacing:.08em; text-transform:uppercase; color:var(--muted)}
.plan.pro .pname{color:var(--purple)}
.price{margin:14px 0 4px; display:flex; align-items:baseline; gap:8px}
.price .amt{font-size:2.5rem; font-weight:720; letter-spacing:-.03em}
.price .per{color:var(--muted); font-size:.95rem}
.price-alt{color:var(--muted); font-size:.9rem; margin-bottom:22px}
.plan ul{list-style:none; padding:0; margin:0 0 26px; display:grid; gap:11px}
.plan li{display:flex; gap:11px; font-size:.98rem; color:var(--text-2)}
.plan li svg{flex:none; margin-top:3px}
.plan .btn{width:100%; justify-content:center; margin-top:auto}
.paynote{text-align:center; color:var(--faint); font-size:.86rem; margin-top:26px}

/* ---- closing ---- */
.close{position:relative; text-align:center; padding:104px 0; overflow:hidden}
.close .glow{position:absolute; inset:0; z-index:0; pointer-events:none;
  background:radial-gradient(60% 120% at 50% 0%, color-mix(in srgb, var(--purple) 22%, transparent), transparent 60%),
    radial-gradient(50% 100% at 50% 100%, color-mix(in srgb, var(--teal) 18%, transparent), transparent 62%);
  filter:blur(6px)}
.close .wrap{position:relative; z-index:1}
.close h2{font-size:clamp(2rem,5vw,3.1rem); margin-bottom:18px}
.close p{color:var(--text-2); font-size:1.12rem; max-width:44ch; margin:0 auto 30px}

/* ---- footer ---- */
footer.site-foot{border-top:1px solid var(--hair); padding:52px 0 44px; color:var(--muted); font-size:.92rem}
.fcols{display:flex; flex-wrap:wrap; gap:28px 40px; align-items:flex-start; justify-content:space-between}
.flinks{display:flex; flex-wrap:wrap; gap:20px}
.flinks a{color:var(--muted)}
.flinks a:hover{color:var(--text)}
.fmeta{max-width:42ch; line-height:1.55}
.fbottom{margin-top:34px; padding-top:22px; border-top:1px solid var(--hair);
  display:flex; flex-wrap:wrap; gap:12px 20px; justify-content:space-between; align-items:center}

/* ============================================================================
   Legal / prose pages — a centred max-width reading column.
   ============================================================================ */
.prose-wrap{max-width:760px; margin:0 auto; padding:56px 24px 96px}
.prose-head{margin-bottom:40px; padding-bottom:28px; border-bottom:1px solid var(--hair)}
.prose-head h1{font-size:clamp(2rem,5vw,2.9rem)}
.prose-head .updated{margin-top:14px; color:var(--muted); font-size:.95rem}
.prose-head .lead{margin-top:18px; color:var(--text-2); font-size:1.1rem; line-height:1.55}
.toc{margin:0 0 44px; padding:20px 22px; background:var(--surface); border:1px solid var(--border);
  border-radius:14px; box-shadow:var(--card-shadow)}
.toc h2{font-size:.8rem; font-weight:640; letter-spacing:.08em; text-transform:uppercase;
  color:var(--muted); margin-bottom:12px}
.toc ol{margin:0; padding-left:1.2rem; display:grid; gap:7px; color:var(--text-2)}
.toc a{color:var(--text-2)}
.toc a:hover{color:var(--teal)}
.prose section{scroll-margin-top:84px; margin-bottom:38px}
.prose h2{font-size:1.4rem; margin-bottom:14px; padding-top:6px}
.prose h3{font-size:1.1rem; margin:22px 0 10px}
.prose p{margin-bottom:14px; color:var(--text-2)}
.prose ul{margin:0 0 16px; padding-left:1.3rem; color:var(--text-2)}
.prose li{margin-bottom:9px}
.prose a{color:var(--teal); text-decoration:underline; text-underline-offset:2px}
.prose a:hover{color:var(--purple)}
.prose strong{color:var(--text); font-weight:640}
.prose .callout{background:var(--surface); border:1px solid var(--border); border-left:3px solid var(--amber);
  border-radius:10px; padding:16px 18px; margin:0 0 22px; box-shadow:var(--card-shadow)}
.prose .callout p{margin:0; color:var(--text-2)}
.prose .backtop{display:inline-block; margin-top:8px; font-size:.85rem; color:var(--muted); text-decoration:none}
.prose .backtop:hover{color:var(--teal)}
.contact-card{background:var(--surface); border:1px solid var(--border); border-radius:16px;
  padding:26px 24px; margin:0 0 22px; box-shadow:var(--card-shadow)}
.contact-card h2{margin-bottom:8px}
.contact-card .email{font-size:1.2rem; font-weight:640}

@media(prefers-reduced-motion:reduce){ *{transition:none!important; animation:none!important} }