/* zeitgeist-os stylesheet.
   Family design language (dark-only, Geist, token-driven) with zeitgeist's
   own accent: cyan. Violet is fixed and reserved for the one pop element,
   the AI synthesis column. Layout is a TweetDeck-style horizontal deck. */

:root {
  --bg: #0a0a0a;
  --card: #171717;
  --card-2: #131313;
  --surface: rgba(255, 255, 255, 0.02);
  --fg: #fafafa;
  --mut: #a1a1a1;
  --mut-2: #7a7a7a;
  --bd: rgba(255, 255, 255, 0.10);
  --bd-soft: rgba(255, 255, 255, 0.06);
  --input: rgba(255, 255, 255, 0.15);

  --accent-h: 184; --accent-s: 70%; --accent-l: 55%;
  --accent: hsl(var(--accent-h) var(--accent-s) var(--accent-l));
  --accent-soft: hsl(var(--accent-h) var(--accent-s) var(--accent-l) / 0.16);
  --accent-glow: hsl(var(--accent-h) var(--accent-s) var(--accent-l) / 0.36);
  --accent-glow-bg: hsl(var(--accent-h) var(--accent-s) var(--accent-l) / 0.07);
  --accent-bd: hsl(var(--accent-h) var(--accent-s) var(--accent-l) / 0.40);

  --violet: hsl(265 80% 70%);
  --violet-soft: hsl(265 80% 70% / 0.14);
  --violet-bd: hsl(265 80% 70% / 0.38);
  --violet-glow-bg: hsl(265 80% 70% / 0.06);

  --pos-fg: #66c46e; --pos-bg: #142019; --pos-bd: rgba(102, 196, 110, 0.30);
  --warn-fg: #e8a64a; --warn-bg: #211a10; --warn-bd: rgba(232, 166, 74, 0.30);
  --neg-fg: #e58585;

  --font-sans: "Geist", -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Geist Mono", "JetBrains Mono", ui-monospace, monospace;

  --r-sm: 6px; --r-md: 10px; --r-lg: 14px;
  --topbar-h: 56px;
  --col-w: 384px;
  --col-w-wide: 420px;

  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.3, 0, 1, 1);
  --z-sticky: 10; --z-pill: 40; --z-overlay: 50;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.5 var(--font-sans);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
body::before {
  content: "";
  position: fixed; inset: 0; pointer-events: none;
  background:
    radial-gradient(900px 480px at 12% -8%, var(--accent-glow-bg), transparent 60%),
    radial-gradient(700px 420px at 95% 108%, var(--violet-glow-bg), transparent 60%),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.014) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.014) 0 1px, transparent 1px 32px);
}
::selection { background: var(--accent-soft); }
* { scrollbar-width: thin; scrollbar-color: rgba(255,255,255,0.18) transparent; }
*::-webkit-scrollbar { width: 6px; height: 6px; }
*::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.18); border-radius: 3px; }
*::-webkit-scrollbar-track { background: transparent; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
.tabnum { font-variant-numeric: tabular-nums; }

/* ---------- top bar ---------- */
.topbar {
  position: fixed; inset: 0 0 auto 0; height: var(--topbar-h);
  display: flex; align-items: center; gap: 18px; padding: 0 20px;
  background: rgba(10, 10, 10, 0.84);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--bd-soft);
  z-index: var(--z-sticky);
}
.brand {
  display: flex; align-items: baseline; gap: 10px;
  font: 500 15px var(--font-mono); letter-spacing: 0.06em;
}
.brand .zg-mark { color: var(--accent); font-weight: 600; }
.brand .zg-sub { color: var(--mut-2); font-size: 11px; letter-spacing: 0.12em; }
.topbar-stats {
  margin-left: auto; display: flex; align-items: center; gap: 14px;
  font: 400 11.5px var(--font-mono); color: var(--mut);
  letter-spacing: 0.04em; white-space: nowrap;
}
.topbar-stats .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--pos-fg); }
.topbar-stats .dot.stale { background: var(--warn-fg); }

/* ---------- deck ---------- */
.deck {
  position: fixed; inset: var(--topbar-h) 0 0 0;
  display: flex; gap: 14px; padding: 14px 20px 18px;
  overflow-x: auto; overflow-y: hidden;
}
.col {
  flex: 0 0 var(--col-w); width: var(--col-w);
  display: flex; flex-direction: column; min-height: 0;
  background: var(--surface);
  border: 1px solid var(--bd-soft);
  border-radius: var(--r-lg);
}
.col.wide { flex-basis: var(--col-w-wide); width: var(--col-w-wide); }
.col.synth { border-color: var(--violet-bd); background: var(--violet-glow-bg); }

.col-head {
  display: flex; align-items: center; gap: 9px;
  padding: 12px 14px 10px;
  border-bottom: 1px solid var(--bd-soft);
}
.col-head .col-icon { display: flex; color: var(--mut); }
.col.synth .col-head .col-icon { color: var(--violet); }
.col-title { font: 600 13px var(--font-sans); letter-spacing: 0.01em; }
.col-count {
  font: 500 11px var(--font-mono); color: var(--mut-2); margin-left: 2px;
}
.col-tools { margin-left: auto; display: flex; gap: 4px; }
.col-tool {
  display: flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border-radius: var(--r-sm); color: var(--mut-2);
  transition: color 150ms var(--ease-out), background 150ms var(--ease-out);
}
.col-tool:hover { color: var(--fg); background: rgba(255,255,255,0.06); }
.col-tool.on { color: var(--accent); background: var(--accent-soft); }

/* filter strip slides open under the header, in-column */
.col-filters {
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
  padding: 10px 14px; border-bottom: 1px solid var(--bd-soft);
}
.col-filters input[type="search"] {
  flex: 1 1 120px; min-width: 0; padding: 6px 9px;
  background: var(--card-2); color: var(--fg);
  border: 1px solid var(--input); border-radius: var(--r-sm);
  font: 400 12.5px var(--font-sans);
}
.col-filters input[type="search"]:focus { outline: 2px solid var(--accent-bd); outline-offset: 0; }
.fpill {
  padding: 5px 9px; border-radius: 999px;
  border: 1px solid var(--bd); color: var(--mut);
  font: 500 11px var(--font-sans);
  transition: all 150ms var(--ease-out);
}
.fpill:hover { color: var(--fg); border-color: rgba(255,255,255,0.22); }
.fpill.on { color: var(--accent); border-color: var(--accent-bd); background: var(--accent-soft); }

.col-body { flex: 1; overflow-y: auto; overscroll-behavior: contain; min-height: 0; }

/* ---------- day dividers + unseen ---------- */
.day-div {
  position: sticky; top: 0; z-index: 2;
  padding: 5px 14px;
  background: rgba(13, 13, 13, 0.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bd-soft);
  font: 500 10.5px var(--font-mono); color: var(--mut-2);
  letter-spacing: 0.14em; text-transform: uppercase;
}
.col.synth .day-div { background: rgba(18, 14, 24, 0.92); }
.unseen-div {
  display: flex; align-items: center; gap: 8px; padding: 6px 14px;
  font: 500 10px var(--font-mono); color: var(--accent);
  letter-spacing: 0.12em; text-transform: uppercase;
}
.unseen-div::before, .unseen-div::after {
  content: ""; flex: 1; height: 1px; background: var(--accent-bd);
}

/* ---------- tweet rows ---------- */
.tw {
  display: grid; grid-template-columns: 40px 1fr; gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--bd-soft);
  transition: background 150ms var(--ease-out);
  content-visibility: auto;
  contain-intrinsic-size: auto 130px;
}
.pod { content-visibility: auto; contain-intrinsic-size: auto 130px; }
.col-sentinel { min-height: 60px; }
.tw:hover { background: rgba(255, 255, 255, 0.025); }
.avatar {
  width: 40px; height: 40px; border-radius: 50%;
  object-fit: cover; background: var(--card);
  border: 1px solid var(--bd-soft);
}
.avatar-fallback {
  width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--card); border: 1px solid var(--bd);
  font: 600 15px var(--font-mono); color: var(--mut);
}
.tw-main { min-width: 0; }
.tw-head {
  display: flex; align-items: baseline; gap: 6px; min-width: 0;
  font-size: 13.5px; line-height: 1.3;
}
.tw-name {
  font-weight: 600; color: var(--fg);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.tw-check { color: var(--accent); flex: none; transform: translateY(1px); }
.tw-handle { color: var(--mut-2); flex: none; font-size: 12.5px; }
.tw-time {
  margin-left: auto; flex: none;
  font: 400 11.5px var(--font-mono); color: var(--mut-2);
}
.tw-time a { color: inherit; }
.tw-ctx { font-size: 12px; color: var(--mut-2); margin-top: 1px; }
.tw-body {
  margin-top: 3px; font-size: 13.5px; line-height: 1.45;
  color: #e9e9e9; white-space: pre-wrap; overflow-wrap: break-word;
}
.tw-body a { color: var(--accent); }
.tw-body .cashtag { color: var(--accent); font-weight: 500; }

/* media grid: X layouts */
.tw-media {
  margin-top: 8px; display: grid; gap: 2px;
  border-radius: var(--r-md); overflow: hidden;
  border: 1px solid var(--bd-soft);
}
.tw-media.n1 { grid-template-columns: 1fr; }
.tw-media.n2 { grid-template-columns: 1fr 1fr; }
.tw-media.n3 { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; }
.tw-media.n3 .m:first-child { grid-row: span 2; }
.tw-media.n4 { grid-template-columns: 1fr 1fr; }
.tw-media .m {
  position: relative; display: block; overflow: hidden; min-height: 0;
  background: var(--card-2);
}
.tw-media .m img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.tw-media.n1 .m img { max-height: 300px; }
.tw-media.n2 .m, .tw-media.n4 .m { aspect-ratio: 8 / 5; }
.tw-media.n3 .m { aspect-ratio: 8 / 5; }
.tw-media.n3 .m:first-child { aspect-ratio: auto; height: 100%; }
.m-play {
  position: absolute; inset: 0; display: grid; place-items: center;
}
.m-play span {
  display: grid; place-items: center; width: 42px; height: 42px;
  border-radius: 50%; background: rgba(10, 10, 10, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.25); color: #fff;
  backdrop-filter: blur(2px);
}
.m-dur {
  position: absolute; right: 6px; bottom: 6px;
  padding: 2px 6px; border-radius: 4px;
  background: rgba(10, 10, 10, 0.8);
  font: 500 10.5px var(--font-mono); color: #eee;
}

/* quoted tweet */
.tw-quote {
  margin-top: 8px; padding: 9px 11px;
  border: 1px solid var(--bd); border-radius: var(--r-md);
  display: block; color: inherit;
  transition: border-color 150ms var(--ease-out), background 150ms var(--ease-out);
}
.tw-quote:hover { text-decoration: none; border-color: rgba(255,255,255,0.2); background: rgba(255,255,255,0.02); }
.tw-quote-head {
  display: flex; align-items: center; gap: 6px;
  font-size: 12px; min-width: 0;
}
.tw-quote-head img { width: 18px; height: 18px; border-radius: 50%; }
.tw-quote-head .qn { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tw-quote-head .qh { color: var(--mut-2); flex: none; }
.tw-quote-body {
  margin-top: 3px; font-size: 12.5px; line-height: 1.4; color: var(--mut);
  display: -webkit-box; -webkit-line-clamp: 5; -webkit-box-orient: vertical; overflow: hidden;
  white-space: pre-wrap;
}

/* link card */
.tw-link {
  margin-top: 8px; display: flex; gap: 10px; align-items: center;
  border: 1px solid var(--bd); border-radius: var(--r-md);
  padding: 8px 10px; color: inherit;
  transition: border-color 150ms var(--ease-out);
}
.tw-link:hover { text-decoration: none; border-color: rgba(255,255,255,0.2); }
.tw-link img { width: 52px; height: 52px; border-radius: var(--r-sm); object-fit: cover; flex: none; }
.tw-link-t { font-size: 12.5px; font-weight: 500; line-height: 1.3; }
.tw-link-d {
  font-size: 11.5px; color: var(--mut-2); line-height: 1.35; margin-top: 1px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* metrics */
.tw-metrics {
  margin-top: 7px; display: flex; gap: 16px; align-items: center;
  font: 400 11px var(--font-mono); color: var(--mut-2);
}
.tw-metrics .mt { display: inline-flex; align-items: center; gap: 4px; }
.tw-metrics svg { opacity: 0.7; }
.tw-metrics .views { margin-left: auto; }

/* ---------- podcast rows ---------- */
.pod {
  padding: 12px 14px; border-bottom: 1px solid var(--bd-soft);
  transition: background 150ms var(--ease-out);
}
.pod:hover { background: rgba(255, 255, 255, 0.025); }
.pod-top { display: flex; gap: 10px; }
.pod-art {
  width: 64px; height: 64px; border-radius: var(--r-md);
  object-fit: cover; flex: none; background: var(--card-2);
  border: 1px solid var(--bd-soft);
}
.pod-main { min-width: 0; flex: 1; }
.pod-channel {
  display: flex; align-items: center; gap: 6px;
  font: 500 11px var(--font-mono); letter-spacing: 0.04em;
}
.pod-channel .ch-dot { width: 7px; height: 7px; border-radius: 50%; flex: none; }
.pod-meta {
  margin-left: auto; display: inline-flex; align-items: center; gap: 8px;
  color: var(--mut-2); font: 400 11px var(--font-mono);
}
.pod-title {
  margin-top: 3px; font-size: 13.5px; font-weight: 600; line-height: 1.35;
}
.pod-title a { color: var(--fg); }
.pod-reason { margin-top: 3px; font-size: 12px; color: var(--mut); line-height: 1.4; }
.score-chip {
  flex: none; padding: 2px 7px; border-radius: 999px;
  font: 600 11px var(--font-mono);
  border: 1px solid var(--bd); color: var(--mut);
}
.score-chip.hi { color: var(--pos-fg); background: var(--pos-bg); border-color: var(--pos-bd); }
.score-chip.md { color: var(--warn-fg); background: var(--warn-bg); border-color: var(--warn-bd); }
.pod-bullets {
  margin: 8px 0 0; padding: 0 0 0 16px;
  font-size: 12.5px; color: var(--mut); line-height: 1.5;
}
.pod-bullets li { margin-bottom: 4px; }
.pod-bullets li::marker { color: var(--mut-2); }
.pod-expand {
  margin-top: 6px; font: 500 11px var(--font-sans); color: var(--accent);
  padding: 0;
}
.pod-expand:hover { text-decoration: underline; }

/* ---------- synthesis column ---------- */
.syn-meta {
  padding: 12px 14px; border-bottom: 1px solid var(--bd-soft);
  font: 400 11px var(--font-mono); color: var(--mut-2); line-height: 1.6;
}
.syn-meta .syn-window { color: var(--violet); font-weight: 500; }
.syn-overview {
  padding: 13px 14px; border-bottom: 1px solid var(--bd-soft);
  font-size: 13.5px; line-height: 1.55; color: #e4e0ea;
}
.theme {
  padding: 13px 14px; border-bottom: 1px solid var(--bd-soft);
  transition: background 150ms var(--ease-out);
}
.theme:hover { background: rgba(255, 255, 255, 0.02); }
.theme-top { display: flex; align-items: center; gap: 8px; }
.trend {
  flex: none; padding: 2px 7px; border-radius: 999px;
  font: 600 10px var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase;
}
.trend.new { color: var(--violet); background: var(--violet-soft); border: 1px solid var(--violet-bd); }
.trend.rising { color: var(--pos-fg); background: var(--pos-bg); border: 1px solid var(--pos-bd); }
.trend.steady { color: var(--mut); border: 1px solid var(--bd); }
.trend.fading { color: var(--mut-2); border: 1px solid var(--bd-soft); }
.theme-head { font-size: 14.5px; font-weight: 600; line-height: 1.3; letter-spacing: -0.01em; }
.theme-take { margin-top: 4px; font-size: 12.5px; color: var(--mut); line-height: 1.45; }
.theme-body { margin-top: 7px; font-size: 12.5px; color: #cfcbd6; line-height: 1.55; }
.theme-evidence { margin-top: 9px; display: flex; flex-wrap: wrap; gap: 6px; }
.ev-chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 9px; border-radius: 999px;
  border: 1px solid var(--bd); color: var(--mut);
  font: 500 11px var(--font-mono);
  transition: all 150ms var(--ease-out);
  max-width: 100%;
}
.ev-chip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ev-chip:hover { text-decoration: none; color: var(--fg); border-color: var(--violet-bd); background: var(--violet-soft); }
.ev-chip svg { flex: none; opacity: 0.7; }
.syn-caveat {
  padding: 11px 14px 14px; font: 400 10.5px var(--font-mono);
  color: var(--mut-2); line-height: 1.55;
}

/* ---------- pill, skeleton, empty ---------- */
.update-pill {
  position: fixed; top: calc(var(--topbar-h) + 12px); left: 50%;
  transform: translateX(-50%); z-index: var(--z-pill);
  display: flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: 999px;
  color: var(--accent); background: rgba(16, 20, 21, 0.88);
  border: 1px solid var(--accent-bd);
  backdrop-filter: blur(10px);
  font: 500 12.5px var(--font-sans);
  box-shadow: 0 6px 24px -8px rgba(0, 0, 0, 0.8);
  animation: pill-in 200ms var(--ease-out);
}
.update-pill-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pill-in { from { opacity: 0; transform: translate(-50%, -6px); } }
@keyframes pulse { 50% { opacity: 0.4; } }

.skel { padding: 12px 14px; border-bottom: 1px solid var(--bd-soft); display: grid; grid-template-columns: 40px 1fr; gap: 10px; }
.skel .b { background: rgba(255, 255, 255, 0.05); border-radius: 6px; }
.skel .c { width: 40px; height: 40px; border-radius: 50%; background: rgba(255, 255, 255, 0.05); }
.skel .l1 { height: 12px; width: 55%; margin-bottom: 8px; }
.skel .l2 { height: 11px; width: 92%; margin-bottom: 6px; }
.skel .l3 { height: 11px; width: 74%; }

.empty {
  padding: 36px 18px; text-align: center;
  font: 400 12px var(--font-mono); color: var(--mut-2); line-height: 1.7;
}
.load-error {
  position: fixed; inset: var(--topbar-h) 0 0 0; display: grid; place-items: center;
  font: 400 13px var(--font-mono); color: var(--neg-fg);
}

/* item entrance (opacity only; cheap, reduced-motion safe) */
.col-body .fade-in { animation: item-in 220ms var(--ease-out) both; }
@keyframes item-in { from { opacity: 0; } }

/* ---------- responsive ---------- */
@media (max-width: 768px) {
  :root { --col-w: min(88vw, 384px); --col-w-wide: min(88vw, 384px); }
  .deck { gap: 10px; padding: 10px 12px 14px; scroll-snap-type: x mandatory; }
  .col { scroll-snap-align: center; }
  .topbar { padding: 0 14px; gap: 10px; }
  .topbar-stats { font-size: 10.5px; gap: 10px; }
  .topbar-stats .hide-sm { display: none; }
  .brand .zg-sub { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}