/* Throughline — calm, local, focused. No external fonts (offline-first). */
:root {
  --bg: #0f1216;
  --bg-elev: #161b22;
  --bg-elev2: #1c232d;
  --line: #262e3a;
  --line-soft: #1f2630;
  --txt: #e8edf3;
  --txt-dim: #9aa7b6;
  --txt-faint: #6b7888;
  --accent: #6ea8fe;
  --accent-2: #8b7bf0;
  --warm: #f0b357;
  --good: #4fd18b;
  --danger: #f08a8a;
  --radius: 14px;
  --shadow: 0 10px 40px rgba(0,0,0,.35);
  --maxw: 1080px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: radial-gradient(1200px 600px at 70% -10%, #1a2230 0%, var(--bg) 55%) fixed;
  color: var(--txt);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
em { font-style: normal; color: var(--accent); }
code { background: var(--bg-elev2); padding: 1px 6px; border-radius: 6px; font-size: .85em; color: #cfe0ff; }
button { font-family: inherit; cursor: pointer; }

/* top bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px clamp(16px, 4vw, 40px); position: sticky; top: 0; z-index: 20;
  background: rgba(15,18,22,.7); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 650; letter-spacing: .2px; color: var(--txt); }
.brand svg { color: var(--accent); }
.pills { display: flex; align-items: center; gap: 10px; }
.pill { font-size: 12.5px; padding: 5px 11px; border-radius: 999px; border: 1px solid var(--line); color: var(--txt-dim); white-space: nowrap; }
.pill-good { color: var(--good); border-color: rgba(79,209,139,.3); background: rgba(79,209,139,.07); }
.ghost { background: transparent; color: var(--txt-dim); border: 1px solid var(--line); border-radius: 8px; padding: 6px 12px; }
.ghost:hover { color: var(--txt); border-color: var(--accent); }

main { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(16px, 4vw, 40px); }

/* landing */
.landing { padding: clamp(40px, 8vh, 90px) 0 60px; }
.landing h1 { font-size: clamp(30px, 5.2vw, 52px); line-height: 1.08; letter-spacing: -.5px; margin: 0 0 20px; font-weight: 720; }
.landing .sub { font-size: clamp(16px, 2.2vw, 19px); color: var(--txt-dim); max-width: 660px; margin: 0 0 32px; }
.cta-row { display: flex; gap: 16px; flex-wrap: wrap; align-items: stretch; }
.primary { background: linear-gradient(180deg, var(--accent), #5a8ee6); color: #0a0e14; border: none; border-radius: 11px; font-weight: 650; padding: 0 22px; }
.primary:hover { filter: brightness(1.07); }
.big { min-height: 64px; font-size: 16.5px; }
button.primary.big { display: inline-flex; align-items: center; }
.drop {
  display: flex; flex-direction: column; justify-content: center; gap: 2px;
  border: 1.5px dashed var(--line); border-radius: 11px; padding: 12px 22px; min-width: 280px;
  background: var(--bg-elev); transition: border-color .15s, background .15s;
}
.drop:hover, .drop.drag { border-color: var(--accent); background: var(--bg-elev2); }
.drop-title { font-weight: 600; }
.drop-sub { font-size: 13px; color: var(--txt-faint); }
.reassure { color: var(--txt-faint); font-size: 14px; margin: 16px 0 0; }

.how { margin: 36px 0 0; border-top: 1px solid var(--line-soft); padding-top: 20px; }
.how summary { cursor: pointer; color: var(--txt-dim); font-weight: 550; }
.how summary:hover { color: var(--txt); }
.how-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 18px; }
.how-grid h4 { margin: 0 0 6px; color: var(--accent); }
.how-grid ol { margin: 0; padding-left: 18px; color: var(--txt-dim); font-size: 14.5px; }
.how-grid li { margin: 4px 0; }

.value-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 48px; }
.value-strip > div { background: var(--bg-elev); border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 18px; }
.value-strip b { display: block; margin-bottom: 6px; }
.value-strip span { color: var(--txt-dim); font-size: 14.5px; }

/* results */
.appview { padding: 28px 0 60px; }
.summary-bar { display: flex; gap: 16px; align-items: center; justify-content: space-between; flex-wrap: wrap; margin-bottom: 22px; }
.summary-stat { color: var(--txt-dim); font-size: 15px; }
.summary-stat b { color: var(--txt); }
.search-wrap { flex: 1; min-width: 260px; max-width: 460px; }
#search {
  width: 100%; background: var(--bg-elev); border: 1px solid var(--line); color: var(--txt);
  border-radius: 10px; padding: 11px 14px; font-size: 15px; outline: none;
}
#search:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(110,168,254,.12); }

.results { display: flex; flex-direction: column; gap: 20px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.card { background: var(--bg-elev); border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 22px; }
.hero-card { border-color: rgba(110,168,254,.28); background: linear-gradient(180deg, rgba(110,168,254,.06), var(--bg-elev) 120px); }
.card-head h2 { margin: 0 0 4px; font-size: 19px; letter-spacing: -.2px; }
.card-head p { margin: 0 0 16px; color: var(--txt-dim); font-size: 14px; max-width: 640px; }

/* recurring */
.rec-list { display: flex; flex-direction: column; gap: 12px; }
.rec {
  border: 1px solid var(--line); border-radius: 12px; padding: 15px 16px; background: var(--bg-elev2);
  display: grid; grid-template-columns: 1fr auto; gap: 12px 16px; align-items: start;
}
.rec-title { font-weight: 620; font-size: 15.5px; }
.rec-meta { color: var(--warm); font-size: 13px; margin-top: 3px; font-variant-numeric: tabular-nums; }
.rec-ex { color: var(--txt-dim); font-size: 13.5px; margin-top: 9px; display: flex; flex-direction: column; gap: 4px; }
.rec-ex span::before { content: "“"; color: var(--txt-faint); }
.rec-ex span::after { content: "”"; color: var(--txt-faint); }
.rec-actions { display: flex; flex-direction: column; gap: 7px; grid-column: 2; grid-row: 1 / span 2; }

.btn { border: 1px solid var(--line); background: var(--bg-elev); color: var(--txt); border-radius: 9px; padding: 8px 13px; font-size: 13.5px; font-weight: 550; white-space: nowrap; }
.btn:hover { border-color: var(--accent); color: #fff; }
.btn-accent { background: rgba(110,168,254,.13); border-color: rgba(110,168,254,.4); color: #cfe0ff; }
.btn-accent:hover { background: rgba(110,168,254,.22); }

/* loose ends */
.loose-list { display: flex; flex-direction: column; gap: 10px; }
.loose { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 11px; background: var(--bg-elev2); }
.loose-main { min-width: 0; }
.loose-title { font-weight: 580; cursor: pointer; }
.loose-title:hover { color: var(--accent); }
.loose-reason { color: var(--txt-dim); font-size: 13px; margin-top: 2px; }
.loose-age { color: var(--txt-faint); font-size: 12px; }
.loose-right { display: flex; align-items: center; gap: 9px; flex-shrink: 0; }

/* themes */
.themes-list { display: flex; flex-direction: column; gap: 9px; }
.theme { display: flex; align-items: center; gap: 12px; }
.theme-bar { height: 8px; border-radius: 999px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); flex-shrink: 0; }
.theme-label { font-size: 14px; }
.theme-count { color: var(--txt-faint); font-size: 12.5px; margin-left: auto; white-space: nowrap; }

/* timeline */
.timeline { display: flex; flex-direction: column; gap: 14px; }
.spark { display: flex; align-items: flex-end; gap: 3px; height: 90px; }
.spark .bar { flex: 1; background: linear-gradient(180deg, var(--accent), rgba(110,168,254,.25)); border-radius: 3px 3px 0 0; min-height: 3px; }
.trend-row { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13.5px; }
.trend-row .tg { color: var(--txt-dim); }
.tag { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12.5px; margin: 2px 4px 2px 0; }
.tag-rise { background: rgba(79,209,139,.12); color: var(--good); }
.tag-fade { background: rgba(240,138,138,.1); color: var(--danger); }

/* diff banner */
.diff-banner { border: 1px solid rgba(139,123,240,.35); background: rgba(139,123,240,.08); border-radius: 12px; padding: 14px 16px; margin-bottom: 20px; color: #d6d0ff; font-size: 14.5px; }
.diff-banner b { color: #fff; }

/* search results */
.search-results { display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; }
.sr { padding: 13px 15px; border: 1px solid var(--line); border-radius: 11px; background: var(--bg-elev); cursor: pointer; }
.sr:hover { border-color: var(--accent); }
.sr-title { font-weight: 580; }
.sr-snip { color: var(--txt-dim); font-size: 13.5px; margin-top: 4px; }
.sr-snip mark { background: rgba(240,179,87,.25); color: #ffe6bd; padding: 0 2px; border-radius: 3px; }

/* modal */
.modal { position: fixed; inset: 0; background: rgba(5,7,10,.66); display: flex; align-items: center; justify-content: center; padding: 20px; z-index: 50; }
.modal-box { background: var(--bg-elev); border: 1px solid var(--line); border-radius: 16px; max-width: 760px; width: 100%; max-height: 84vh; overflow: auto; padding: 26px; box-shadow: var(--shadow); position: relative; }
.modal-close { position: absolute; top: 14px; right: 16px; background: none; border: none; color: var(--txt-dim); font-size: 26px; line-height: 1; }
.modal-close:hover { color: #fff; }
.msg { margin: 14px 0; }
.msg .who { font-size: 12px; text-transform: uppercase; letter-spacing: .6px; color: var(--txt-faint); margin-bottom: 4px; }
.msg.user .bubble { background: var(--bg-elev2); border: 1px solid var(--line); }
.msg.assistant .bubble { background: rgba(110,168,254,.07); border: 1px solid var(--line-soft); }
.bubble { padding: 11px 14px; border-radius: 11px; white-space: pre-wrap; font-size: 14.5px; color: var(--txt); }

/* toast */
.toast { position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%); background: var(--bg-elev2); border: 1px solid var(--accent); color: #fff; padding: 12px 20px; border-radius: 11px; box-shadow: var(--shadow); z-index: 60; font-size: 14.5px; max-width: 90vw; }

.foot { max-width: var(--maxw); margin: 40px auto 30px; padding: 18px clamp(16px,4vw,40px) 0; border-top: 1px solid var(--line-soft); display: flex; justify-content: space-between; gap: 14px; color: var(--txt-dim); font-size: 13px; flex-wrap: wrap; }
.muted { color: var(--txt-faint); }

/* experiment badge + language toggle + data controls */
.exp-badge { font-size: 10.5px; text-transform: uppercase; letter-spacing: .8px; font-weight: 700; color: var(--warm); border: 1px solid rgba(240,179,87,.4); background: rgba(240,179,87,.08); padding: 2px 7px; border-radius: 6px; }
.lang { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.lang-btn { background: transparent; color: var(--txt-faint); border: none; padding: 6px 10px; font-size: 12.5px; font-weight: 600; }
.lang-btn.active { background: var(--bg-elev2); color: var(--txt); }
.lang-btn:hover { color: var(--txt); }

.privacy-note { color: var(--txt-faint); font-size: 13px; max-width: 660px; margin: 18px 0 0; border-left: 2px solid var(--line); padding-left: 12px; }
.lab-note { color: var(--warm); font-size: 13px; margin: 28px 0 0; opacity: .85; }

/* loading overlay */
.loading { position: fixed; inset: 0; background: rgba(10,13,18,.78); backdrop-filter: blur(3px); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px; z-index: 70; color: var(--txt-dim); }
.spinner { width: 38px; height: 38px; border-radius: 50%; border: 3px solid var(--line); border-top-color: var(--accent); animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* low-signal empty state */
.low-signal { text-align: center; color: var(--txt-dim); }
.low-signal p { margin: 6px 0; max-width: 560px; margin-inline: auto; }

@media (max-width: 760px) {
  .two-col, .how-grid, .value-strip { grid-template-columns: 1fr; }
  .rec { grid-template-columns: 1fr; }
  .rec-actions { grid-column: 1; grid-row: auto; flex-direction: row; }
  .pills { flex-wrap: wrap; gap: 8px; }
  .pill { font-size: 11.5px; }
  .landing h1 { font-size: clamp(26px, 8vw, 40px); }
}