/* kalamazoo • through time ------------------------------------------------ */

:root {
  --ink: #0b0f17;
  --paper: #e8e3d8;
  --accent: #c2410f;
  --glass-bg: rgba(10, 14, 22, 0.72);
  --glass-line: rgba(214, 211, 198, 0.16);
  --text: #e7e5df;
  --dim: rgba(231, 229, 223, 0.55);
  --dimmer: rgba(231, 229, 223, 0.32);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--ink);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

.serif { font-family: 'Fraunces', Georgia, 'Times New Roman', serif; }
.mono  { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }
.dim { color: var(--dim); }
.dimmer { color: var(--dimmer); }
.accent { color: #f59e0b; }
.hidden { display: none !important; }

#three-container { position: fixed; inset: 0; z-index: 1; }
#three-container canvas { display: block; outline: none; }

/* glass ------------------------------------------------------------------ */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(18px) saturate(1.1);
  -webkit-backdrop-filter: blur(18px) saturate(1.1);
  border: 1px solid var(--glass-line);
  box-shadow: 0 18px 50px -22px rgba(0, 0, 0, 0.7);
}
.glass-strong {
  background: rgba(10, 14, 22, 0.88);
  backdrop-filter: blur(26px) saturate(1.15);
  -webkit-backdrop-filter: blur(26px) saturate(1.15);
  border: 1px solid rgba(214, 211, 198, 0.2);
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.85);
}

/* buttons ------------------------------------------------------------------ */
.btn {
  appearance: none;
  border: 1px solid transparent;
  background: rgba(231, 229, 223, 0.06);
  color: var(--text);
  font: 500 12px/1 'Inter', sans-serif;
  letter-spacing: 0.02em;
  padding: 8px 13px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn:hover { background: rgba(231, 229, 223, 0.13); }
.btn:active { transform: scale(0.97); }
.btn.primary { background: var(--accent); color: #fff8f0; }
.btn.primary:hover { filter: brightness(1.12); }
.btn.ghost { background: transparent; border-color: var(--glass-line); }
.btn.outline { background: transparent; border-color: rgba(231, 229, 223, 0.25); }
.btn.glass { background: var(--glass-bg); border: 1px solid var(--glass-line); backdrop-filter: blur(14px); }
.btn.active { background: rgba(245, 158, 11, 0.22); border-color: rgba(245, 158, 11, 0.5); }

.pill {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  background: rgba(231, 229, 223, 0.1);
  color: var(--dim);
  font-size: 10.5px;
}
.x {
  appearance: none; border: 0; background: transparent;
  color: var(--dim); font-size: 22px; line-height: 1; cursor: pointer; padding: 4px 8px;
}
.x:hover { color: var(--text); }
kbd {
  font: 600 11px/1 'Inter', sans-serif;
  background: rgba(231,229,223,0.12);
  border: 1px solid rgba(231,229,223,0.2);
  border-bottom-width: 2px;
  padding: 3px 6px; border-radius: 5px;
}

/* top bar ------------------------------------------------------------------ */
#topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px;
  background: linear-gradient(to bottom, rgba(5, 8, 14, 0.55), transparent);
  pointer-events: none;
}
#topbar > * { pointer-events: auto; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 13px;
  display: grid; place-items: center;
  color: #0b0f17;
  background: linear-gradient(135deg, #f59e0b, #c2410f 60%, #7c2d12);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.35), 0 8px 22px -8px rgba(194, 65, 15, 0.6);
}
.brand-name { font: 600 21px/1 'Fraunces', serif; letter-spacing: -0.02em; }
.brand-sub { font-size: 8.5px; letter-spacing: 3.5px; color: var(--dimmer); margin-top: 2px; }
.topbar-right { display: flex; align-items: center; gap: 8px; }
.live-chip {
  display: flex; align-items: center; gap: 7px;
  font-size: 10px; letter-spacing: 1.2px; color: var(--dim);
  padding: 7px 13px; border-radius: 999px;
  background: var(--glass-bg); border: 1px solid var(--glass-line);
  backdrop-filter: blur(12px);
}
.live-dot { width: 6px; height: 6px; border-radius: 50%; background: #34d399; animation: pulse 2.2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* selection screen --------------------------------------------------------- */
#selection-screen {
  position: fixed; inset: 0; z-index: 90;
  display: flex; align-items: center; justify-content: center;
  padding: 76px 26px 28px;
  overflow-y: auto;
  background:
    radial-gradient(1100px 500px at 50% -10%, rgba(194, 65, 15, 0.16), transparent 60%),
    radial-gradient(900px 600px at 12% 110%, rgba(8, 47, 73, 0.5), transparent 60%),
    linear-gradient(rgba(7, 10, 16, 0.78), rgba(7, 10, 16, 0.9));
  transition: opacity 0.45s ease;
}
.selection-inner { max-width: 1380px; width: 100%; margin: auto; }
.hero { text-align: center; margin-bottom: 34px; }
.hero-chip {
  display: inline-flex; gap: 9px; align-items: center;
  font-size: 10.5px; letter-spacing: 2.5px;
  padding: 7px 16px; border-radius: 999px;
  background: var(--glass-bg); border: 1px solid var(--glass-line);
  margin-bottom: 20px;
}
.hero h1 {
  font: 550 clamp(40px, 5.6vw, 74px)/1.04 'Fraunces', serif;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
  background: linear-gradient(180deg, #f5f0e6, #cdc3ae);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub { color: var(--dim); font-size: 16px; line-height: 1.55; margin: 0 auto; max-width: 560px; }

.era-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(205px, 1fr));
  gap: 14px;
}
.era-card {
  position: relative;
  border-radius: 22px;
  border: 1px solid rgba(231, 229, 223, 0.1);
  background: rgba(13, 18, 28, 0.66);
  backdrop-filter: blur(10px);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.22s cubic-bezier(0.23, 1, 0.32, 1), border-color 0.22s ease, box-shadow 0.22s ease;
}
.era-card:hover {
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--card-accent) 55%, transparent);
  box-shadow: 0 30px 60px -18px rgba(0, 0, 0, 0.6), 0 0 0 1px color-mix(in srgb, var(--card-accent) 25%, transparent);
}
.era-card .swatch {
  position: relative;
  height: 64px;
  background: var(--card-grad);
  overflow: hidden;
}
.era-card .swatch::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(transparent 30%, rgba(13, 18, 28, 0.92));
}
.era-card .skyline {
  position: absolute; bottom: 4px; left: 12px; right: 12px; height: 34px;
  opacity: 0.85; color: rgba(10, 13, 20, 0.85);
}
.era-card-body { padding: 14px 16px 15px; }
.era-card .year { font-size: 10.5px; letter-spacing: 2px; color: var(--card-accent-text); }
.era-card .name { font: 600 19px/1.15 'Fraunces', serif; letter-spacing: -0.01em; margin: 3px 0 8px; }
.era-card .blurb { font-size: 12px; line-height: 1.5; color: var(--dim); min-height: 72px; }
.era-card .meta {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 11px; font-size: 10.5px;
}
.era-card .chips { color: var(--card-accent-text); opacity: 0.85; }
.era-card .go { color: var(--card-accent-text); font-weight: 600; }
.era-card:hover .go { text-decoration: underline; }
.era-card .key-hint {
  position: absolute; top: 10px; right: 10px;
  font: 600 10px/1 'Inter', sans-serif;
  color: rgba(10, 13, 20, 0.75);
  background: rgba(231, 229, 223, 0.6);
  padding: 4px 7px; border-radius: 6px;
}
.selection-foot {
  text-align: center; margin-top: 30px;
  font-size: 11.5px; line-height: 1.7; color: var(--dim);
}

/* HUD ----------------------------------------------------------------------- */
#hud { position: fixed; inset: 0; z-index: 80; pointer-events: none; }
#hud > * { pointer-events: auto; }

.hud-top {
  position: fixed; top: 64px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 14px;
  padding: 9px 14px; border-radius: 999px;
  max-width: calc(100vw - 30px);
}
.hud-era { display: flex; align-items: center; gap: 9px; padding-right: 13px; border-right: 1px solid var(--glass-line); }
#hud-era-name { font: 600 17px/1 'Fraunces', serif; letter-spacing: -0.01em; white-space: nowrap; }
.hud-stats { display: flex; align-items: center; gap: 10px; font-size: 12px; }
.hud-stat { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.hud-stat .ic { width: 13px; height: 13px; color: #f59e0b; }
#hud-pulse { color: #34d399; }
.sep { width: 1px; height: 14px; background: var(--glass-line); display: inline-block; }
.hud-actions { display: flex; gap: 5px; padding-left: 2px; border-left: 1px solid var(--glass-line); }

.hud-people {
  position: fixed; top: 128px; right: 18px;
  width: 272px; max-height: min(480px, calc(100vh - 240px));
  border-radius: 20px; padding: 13px;
  display: flex; flex-direction: column;
}
.people-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 9px; padding: 0 3px; }
.people-title { font-weight: 600; font-size: 13px; }
.people-list { overflow-y: auto; flex: 1; scrollbar-width: thin; scrollbar-color: rgba(231,229,223,0.18) transparent; }
.person-row {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 8px; border-radius: 13px; cursor: pointer;
  transition: background 0.12s ease;
}
.person-row:hover { background: rgba(231, 229, 223, 0.07); }
.person-dot { width: 24px; height: 24px; border-radius: 50%; flex-shrink: 0; border: 2px solid rgba(231,229,223,0.18); }
.person-info { flex: 1; min-width: 0; }
.person-name { font-weight: 550; font-size: 12.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.person-name .thread-mark { font-size: 10px; opacity: 0.8; }
.person-doing { font-size: 10.5px; color: var(--dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.person-roots { font-size: 11px; color: rgba(52, 211, 153, 0.8); }
.people-foot { font-size: 10px; color: var(--dimmer); padding: 9px 3px 0; border-top: 1px solid var(--glass-line); margin-top: 8px; }

.hud-bottom {
  position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px; align-items: center;
}
.seg { display: flex; align-items: center; gap: 3px; padding: 6px 8px; border-radius: 999px; }
.hud-hint {
  position: fixed; bottom: 22px; left: 22px;
  font-size: 10px; color: var(--dimmer);
}

/* story panel ----------------------------------------------------------------- */
#story-panel {
  position: fixed; left: 18px; bottom: 64px; z-index: 95;
  width: 330px; max-height: 60vh; overflow-y: auto;
  border-radius: 20px; padding: 17px 18px;
  animation: rise 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}
#story-panel .x { position: absolute; top: 8px; right: 8px; }
.story-kicker { font-size: 9px; letter-spacing: 2.5px; color: #f59e0b; margin-bottom: 6px; }
.story-title { font: 600 19px/1.2 'Fraunces', serif; margin-bottom: 9px; }
.story-body { font-size: 12.5px; line-height: 1.62; color: rgba(231, 229, 223, 0.85); }
.story-strata { margin-top: 11px; border-top: 1px solid var(--glass-line); padding-top: 11px; }
.strata-toggle {
  appearance: none; border: 0; cursor: pointer;
  display: block; width: 100%; text-align: left;
  margin-top: 13px; padding: 8px 10px;
  border-radius: 11px;
  background: rgba(231, 229, 223, 0.05);
  border: 1px solid var(--glass-line);
  color: var(--dim);
  font: 500 11px/1 'Inter', sans-serif;
  letter-spacing: 0.04em;
  transition: background 0.15s ease, color 0.15s ease;
}
.strata-toggle:hover { background: rgba(231, 229, 223, 0.1); color: var(--text); }
.strata-toggle.open { color: #f59e0b; }
.stratum { display: flex; gap: 10px; font-size: 11px; line-height: 1.5; padding: 3px 0; }
.stratum .y { color: #f59e0b; font-weight: 600; min-width: 34px; }
.stratum .t { color: var(--dim); }
.stratum.now .t { color: var(--text); }

@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* river voice ----------------------------------------------------------------- */
#river-voice {
  position: fixed; bottom: 96px; left: 50%; transform: translateX(-50%);
  z-index: 96; max-width: 620px; text-align: center;
  font: italic 400 19px/1.5 'Fraunces', serif;
  color: #bfe3e8;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.9), 0 0 50px rgba(34, 211, 238, 0.25);
  pointer-events: none;
  animation: riverIn 0.8s ease;
  padding: 0 20px;
}
@keyframes riverIn { from { opacity: 0; transform: translate(-50%, 10px); } to { opacity: 1; transform: translate(-50%, 0); } }
#river-voice.fade { transition: opacity 1.2s ease; opacity: 0; }

/* nametag ----------------------------------------------------------------- */
#nametag {
  position: fixed; z-index: 97; pointer-events: none;
  transform: translate(-50%, -130%);
  font-size: 11px; font-weight: 550;
  padding: 4px 10px; border-radius: 999px;
  background: rgba(10, 14, 22, 0.85); border: 1px solid var(--glass-line);
  backdrop-filter: blur(8px);
  white-space: nowrap;
}
#nametag .nt-doing { color: var(--dim); font-weight: 400; }

/* modals ----------------------------------------------------------------- */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(4, 6, 10, 0.72);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  animation: fadeIn 0.18s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal {
  width: 100%; max-width: 470px; max-height: 86vh; overflow-y: auto;
  border-radius: 24px;
  animation: modalPop 0.24s cubic-bezier(0.23, 1, 0.32, 1);
}
@keyframes modalPop { from { opacity: 0; transform: scale(0.96) translateY(12px); } to { opacity: 1; transform: none; } }
.modal-head {
  display: flex; align-items: center; gap: 13px;
  padding: 18px 20px 14px; border-bottom: 1px solid var(--glass-line);
}
.portrait {
  width: 46px; height: 46px; border-radius: 16px; flex-shrink: 0;
  border: 1px solid rgba(231,229,223,0.2);
  background-size: cover;
}
.modal-id { flex: 1; min-width: 0; }
.modal-name { font: 600 20px/1.15 'Fraunces', serif; letter-spacing: -0.01em; }
.modal-role { font-size: 11.5px; color: var(--dim); margin-top: 3px; }
.modal-thread { font-size: 10.5px; color: #f59e0b; margin-top: 5px; }
.modal-body { padding: 16px 20px; }
.modal-block { margin-bottom: 15px; }
.label { font-size: 9px; letter-spacing: 2px; color: var(--dimmer); margin-bottom: 5px; }
.modal-now { font-size: 15px; line-height: 1.45; }
.modal-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 15px; }
.modal-val { font-size: 14px; }
.modal-val b { font-size: 17px; color: #34d399; }
.modal-memory { font-size: 13.5px; line-height: 1.65; color: rgba(231, 229, 223, 0.88); font-style: italic; }
.modal-speech {
  margin-top: 4px; padding: 14px 16px;
  background: rgba(194, 65, 15, 0.09);
  border: 1px solid rgba(194, 65, 15, 0.28);
  border-radius: 16px;
}
.speech-text { font-size: 14.5px; line-height: 1.6; min-height: 44px; }
.speech-text .caret { display: inline-block; width: 7px; opacity: 0.7; animation: pulse 0.9s infinite; }
.speech-attrib { font-size: 10.5px; color: var(--dimmer); margin-top: 8px; text-align: right; }
.modal-foot {
  display: flex; justify-content: flex-end; gap: 8px;
  padding: 13px 20px 17px; border-top: 1px solid var(--glass-line);
}

/* era overlay ----------------------------------------------------------------- */
#era-overlay {
  position: fixed; inset: 0; z-index: 150;
  display: flex; align-items: center; justify-content: center;
  background: #05070c;
  text-align: center;
  transition: opacity 1.1s ease;
  pointer-events: none;
}
#era-overlay.showing { pointer-events: auto; }
.overlay-inner { max-width: 660px; padding: 0 28px; }
.overlay-year { font-size: 13px; letter-spacing: 6px; color: #f59e0b; margin-bottom: 14px; opacity: 0; animation: lineUp 1.2s ease 0.15s forwards; }
.overlay-name { font: 550 clamp(40px, 6vw, 64px)/1.05 'Fraunces', serif; letter-spacing: -0.02em; margin-bottom: 26px; opacity: 0; animation: lineUp 1.2s ease 0.4s forwards; }
.overlay-poem { font-style: italic; font-size: clamp(15px, 1.9vw, 19px); line-height: 1.8; color: rgba(231, 229, 223, 0.82); white-space: pre-line; opacity: 0; animation: lineUp 1.4s ease 0.9s forwards; }
.overlay-attrib { margin-top: 18px; font-size: 11px; letter-spacing: 1px; color: var(--dimmer); opacity: 0; animation: lineUp 1.4s ease 1.5s forwards; }
@keyframes lineUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* compare ----------------------------------------------------------------- */
.compare-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 9px; padding: 16px 20px 20px;
}
.compare-opt {
  padding: 13px 14px; border-radius: 15px; cursor: pointer;
  border: 1px solid var(--glass-line);
  background: rgba(231, 229, 223, 0.04);
  transition: all 0.14s ease;
}
.compare-opt:hover { background: rgba(231, 229, 223, 0.1); border-color: var(--co-accent); }
.compare-opt .y { font-size: 10px; letter-spacing: 1.5px; color: var(--co-accent); }
.compare-opt .n { font: 600 15px/1.2 'Fraunces', serif; margin-top: 2px; }
.compare-opt.off { opacity: 0.3; pointer-events: none; }

#compare-hud { position: fixed; inset: 0; z-index: 85; pointer-events: none; }
#compare-hud > * { pointer-events: auto; }
.compare-label {
  position: fixed; top: 64px; left: 18px;
  padding: 9px 16px; border-radius: 999px;
  font: 600 14px/1 'Fraunces', serif;
}
.compare-label .y { color: #f59e0b; font: 500 11px/1 'Inter', sans-serif; margin-left: 8px; }
.compare-label.right { left: auto; right: 18px; }
.compare-divider {
  position: fixed; top: 0; bottom: 0; width: 3px; left: 50%;
  background: rgba(231, 229, 223, 0.5);
  cursor: ew-resize;
  box-shadow: 0 0 18px rgba(0,0,0,0.8);
}
.divider-grip {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(10, 14, 22, 0.9); border: 1px solid rgba(231, 229, 223, 0.4);
  display: grid; place-items: center; font-size: 14px;
  backdrop-filter: blur(8px);
}
.compare-exit { position: fixed; top: 60px; left: 50%; transform: translateX(-50%); z-index: 86; }
.compare-exit .btn {
  background: var(--accent); color: #fff8f0;
  font: 600 14px/1 'Inter', sans-serif;
  padding: 11px 20px; border-radius: 999px;
  border: 1px solid rgba(255, 248, 240, 0.5);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.55);
}
.compare-exit .btn:hover { filter: brightness(1.12); transform: translateY(-1px); }

/* help / about ----------------------------------------------------------------- */
.help-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px 22px; padding: 18px 22px 22px; font-size: 12.5px; color: var(--dim); }
.help-grid kbd { margin-right: 2px; }
.about .about-body { padding: 16px 22px 22px; font-size: 13px; line-height: 1.7; color: rgba(231, 229, 223, 0.85); }
.about .about-body p { margin: 0 0 13px; }
.about .fine { font-size: 11.5px; color: var(--dim); border-top: 1px solid var(--glass-line); padding-top: 13px; }

/* toasts ----------------------------------------------------------------- */
#toasts {
  position: fixed; bottom: 78px; left: 50%; transform: translateX(-50%);
  z-index: 250; display: flex; flex-direction: column; align-items: center; gap: 8px;
  pointer-events: none; width: min(560px, calc(100vw - 40px));
}
.toast {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 18px; border-radius: 16px;
  background: rgba(10, 14, 22, 0.88); border: 1px solid var(--glass-line);
  backdrop-filter: blur(16px);
  font-size: 13px; line-height: 1.45;
  box-shadow: 0 16px 44px -14px rgba(0, 0, 0, 0.8);
  animation: rise 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.toast.bright { border-color: rgba(245, 158, 11, 0.4); }
.toast.ache { border-color: rgba(148, 163, 184, 0.35); color: rgba(231, 229, 223, 0.8); }
.toast.wonder { border-color: rgba(34, 211, 238, 0.4); }
.toast.echo {
  /* the city speaking unprompted: quieter than any event, serif, half-light */
  border-color: rgba(196, 181, 153, 0.28); color: rgba(231, 229, 223, 0.72);
  font-family: 'Fraunces', Georgia, serif; font-style: italic;
}
.toast .ti { flex-shrink: 0; margin-top: 1px; }
.toast.gone { opacity: 0; transform: translateY(8px); }

/* webgl fail ----------------------------------------------------------------- */
#no-webgl {
  position: fixed; inset: 0; z-index: 999;
  display: grid; place-items: center; text-align: center;
  background: var(--ink); padding: 30px;
}
#no-webgl p { color: var(--dim); max-width: 380px; line-height: 1.6; }

/* responsive ----------------------------------------------------------------- */
@media (max-width: 900px) {
  .hud-people { display: none; }
  .live-chip { display: none; }
  .hud-top { flex-wrap: wrap; justify-content: center; border-radius: 22px; top: 58px; }
  .hud-era { border-right: 0; }
  .hud-hint { display: none; }
  #story-panel { left: 12px; right: 12px; width: auto; bottom: 76px; }
  .help-grid { grid-template-columns: 1fr; }
}