/* ================================================================
   GeoSift — Solar Pack mockup
   Dark mode only · Linear/Vercel/Felt-style
   ================================================================ */

:root {
  /* surfaces */
  --bg:        #0F172A;          /* slate-950 */
  --bg-2:      #0B1220;          /* darker (map base) */
  --surface:   #1E293B;          /* slate-800 */
  --surface-2: #172033;          /* between */
  --surface-3: #243049;          /* hover */
  --border:    #334155;          /* slate-700 */
  --border-soft: #2A3650;
  --border-strong: #475569;      /* slate-600 */

  /* text */
  --text:      #F1F5F9;          /* slate-100 */
  --text-2:    #CBD5E1;          /* slate-300 */
  --text-mute: #94A3B8;          /* slate-400 */
  --text-dim:  #64748B;          /* slate-500 */

  /* accents */
  --emerald-700: #047857;
  --emerald-600: #059669;
  --emerald-500: #10B981;
  --emerald-400: #34D399;
  --cyan-500:    #06B6D4;
  --amber:       #F59E0B;
  --rust:        #DC2626;
  --sky:         #0EA5E9;
  --violet:      #8B5CF6;

  /* gradients */
  --grad-ai: linear-gradient(135deg, #10B981 0%, #06B6D4 100%);

  /* radii */
  --r-sm: 4px;
  --r-md: 6px;
  --r-lg: 8px;
  --r-xl: 12px;
  --r-2xl: 16px;

  /* shadow */
  --shadow-1: 0 1px 0 0 rgba(255,255,255,.02) inset, 0 1px 2px rgba(0,0,0,.3);
  --shadow-2: 0 8px 24px rgba(0,0,0,.35), 0 2px 4px rgba(0,0,0,.25);
  --shadow-3: 0 20px 60px rgba(0,0,0,.55), 0 4px 12px rgba(0,0,0,.35);

  /* metrics */
  --topbar-h: 48px;
  --left-w: 288px;
  --right-w: 384px;

  /* type */
  --font-display: "Geist", "Geist Sans", "Inter", system-ui, -apple-system, sans-serif;
  --font-body:    "Inter", system-ui, -apple-system, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 13.5px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
}

button {
  background: transparent;
  border: 0;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

input { font: inherit; color: inherit; background: transparent; border: 0; outline: 0; }

kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  border-bottom-color: var(--border-strong);
  border-radius: var(--r-sm);
  padding: 1px 5px;
  color: var(--text-mute);
}

/* ============================== TOP BAR ============================== */

.topbar {
  position: relative;
  z-index: 30;
  height: var(--topbar-h);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 0 16px;
  background: linear-gradient(180deg, #0F1A2E 0%, #0E1729 100%);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: 0 1px 0 rgba(255,255,255,.02) inset;
}

.topbar-left, .topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar-center {
  display: flex;
  justify-content: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  color: var(--text);
  padding: 4px 8px 4px 4px;
  border-radius: var(--r-md);
  transition: background-color 200ms ease;
}
.brand:hover { background: var(--surface-3); }

.brand-mark {
  width: 22px;
  height: 22px;
  display: block;
  filter: drop-shadow(0 0 8px rgba(16,185,129,.25));
}

.brand-word {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: -0.015em;
}

.divider-v {
  width: 1px;
  height: 22px;
  background: var(--border-soft);
  margin: 0 4px;
}
.divider-v.small { height: 18px; }

.pack-switcher {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px 4px 6px;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  height: 30px;
  transition: border-color 200ms ease, background-color 200ms ease;
}
.pack-switcher:hover { border-color: var(--border); background: var(--surface-3); }

.pack-icon {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: rgba(245,158,11,.12);
  border: 1px solid rgba(245,158,11,.28);
}

.pack-label {
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: -0.01em;
  font-size: 13px;
}

.pack-sub {
  color: var(--text-mute);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.caret { color: var(--text-mute); margin-left: 2px; }

/* search */
.search {
  display: flex;
  align-items: center;
  gap: 10px;
  width: min(560px, 56vw);
  height: 32px;
  padding: 0 10px 0 12px;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-lg);
  color: var(--text-mute);
  transition: border-color 200ms ease, background-color 200ms ease;
}
.search:hover, .search:focus-within {
  border-color: var(--border);
  background: var(--surface-3);
}
.search input {
  flex: 1;
  font-size: 13px;
  color: var(--text);
}
.search input::placeholder { color: var(--text-mute); }

/* icon buttons */
.ic-btn {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: var(--r-md);
  color: var(--text-mute);
  position: relative;
  transition: background-color 200ms ease, color 200ms ease;
}
.ic-btn:hover { background: var(--surface-3); color: var(--text); }
.ic-btn.xs { width: 22px; height: 22px; border-radius: var(--r-sm); }

.badge-dot {
  position: absolute;
  top: 6px; right: 7px;
  width: 6px; height: 6px;
  border-radius: 999px;
  background: var(--emerald-500);
  box-shadow: 0 0 0 2px #0E1729;
}

.avatar {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: linear-gradient(135deg, #1E293B 0%, #334155 100%);
  border: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .03em;
  color: var(--text);
  transition: transform 200ms ease, border-color 200ms ease;
}
.avatar:hover { border-color: var(--border-strong); transform: translateY(-1px); }

/* ============================== APP SHELL ============================== */

.shell {
  height: calc(100vh - var(--topbar-h));
  display: grid;
  grid-template-columns: var(--left-w) 1fr var(--right-w);
  background: var(--bg);
}

/* ============================== LEFT: LAYERS ============================== */

.layers {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border-right: 1px solid var(--border-soft);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: #2a3650 transparent;
}
.layers::-webkit-scrollbar { width: 8px; }
.layers::-webkit-scrollbar-thumb { background: #2a3650; border-radius: 8px; }

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-soft);
  position: sticky;
  top: 0;
  background: var(--surface);
  z-index: 2;
}
.panel-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: -0.005em;
  color: var(--text);
}
.panel-title svg { color: var(--text-mute); }

.panel-actions { display: inline-flex; gap: 2px; }
.hd-btn {
  display: inline-grid;
  place-items: center;
  width: 24px; height: 24px;
  color: var(--text-mute);
  border-radius: var(--r-sm);
  transition: background-color 200ms ease, color 200ms ease;
}
.hd-btn:hover { background: var(--surface-3); color: var(--text); }

/* layer group */
.layer-group { padding: 8px 6px 4px; }

.lg-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  color: var(--text-mute);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.lg-toggle {
  display: inline-grid;
  place-items: center;
  width: 16px; height: 16px;
  color: var(--text-dim);
  border-radius: 3px;
}
.lg-title { color: var(--text-2); }
.lg-count {
  margin-left: auto;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  padding: 0 7px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  color: var(--text-mute);
}

.solar-group .lg-head { color: rgba(245,158,11,.75); }
.solar-group .lg-title { color: var(--amber); }
.pack-badge {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 2px 6px;
  background: rgba(245,158,11,.10);
  color: var(--amber);
  border: 1px solid rgba(245,158,11,.28);
  border-radius: var(--r-sm);
  text-transform: uppercase;
}

/* layer row */
.layer-row {
  position: relative;
  display: grid;
  grid-template-columns: 8px 16px 14px 1fr auto;
  align-items: center;
  gap: 9px;
  padding: 7px 8px;
  border-radius: var(--r-md);
  cursor: default;
  transition: background-color 180ms ease;
}
.layer-row:hover { background: var(--surface-3); }
.layer-row:hover .grip::before { opacity: 1; }
.layer-row.checked .row-name { color: var(--text); }

.grip { position: relative; width: 6px; height: 16px; }
.grip::before {
  content: "";
  position: absolute;
  left: 0; top: 2px;
  width: 2px; height: 12px;
  background:
    radial-gradient(circle, var(--text-dim) 0.7px, transparent 1px) 0 0/2px 4px repeat-y;
  opacity: 0;
  transition: opacity 200ms ease;
}

/* checkbox */
.check { position: relative; display: inline-grid; place-items: center; width: 16px; height: 16px; }
.check input { position: absolute; opacity: 0; width: 0; height: 0; }
.check .box {
  width: 14px; height: 14px;
  border: 1.4px solid var(--border-strong);
  border-radius: 3.5px;
  background: rgba(0,0,0,.2);
  display: inline-grid;
  place-items: center;
  transition: all 180ms ease;
}
.check input:checked + .box {
  background: var(--emerald-600);
  border-color: var(--emerald-500);
  box-shadow: 0 0 0 2px rgba(16,185,129,.15);
}
.check input:checked + .box::after {
  content: "";
  width: 8px;
  height: 4px;
  border-left: 1.6px solid #fff;
  border-bottom: 1.6px solid #fff;
  transform: rotate(-45deg) translateY(-1px);
}

/* swatches */
.swatch {
  width: 14px; height: 14px;
  border-radius: 3px;
  display: inline-block;
  flex-shrink: 0;
}
.swatch.dot { border-radius: 999px; }
.swatch.dot.emerald { background: radial-gradient(circle, var(--emerald-400) 0%, var(--emerald-600) 100%); box-shadow: 0 0 0 2px rgba(16,185,129,.15); }
.swatch.dot.solar { background: radial-gradient(circle, #FBBF24 0%, #D97706 100%); box-shadow: 0 0 0 2px rgba(245,158,11,.18); }
.swatch.poly.amber { background: rgba(245,158,11,.12); border: 1px dashed var(--amber); }
.swatch.poly.slate { background: rgba(148,163,184,.18); border: 1px solid #475569; }
.swatch.poly.violet { background: rgba(139,92,246,.18); border: 1px solid var(--violet); }
.swatch.poly.cyan { background: rgba(6,182,212,.16); border: 1px solid var(--cyan-500); }
.swatch.line.slate { background: linear-gradient(90deg, transparent 0 25%, var(--text-dim) 25% 75%, transparent 75% 100%); border-radius: 0; height: 2px; }
.swatch.heatmap {
  background: linear-gradient(90deg, var(--sky), var(--emerald-500), var(--amber), var(--rust));
}
.swatch.heatmap.solar {
  background: linear-gradient(90deg, #6366F1, #F59E0B, #DC2626);
}

.row-body { min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.row-name {
  font-size: 13px;
  color: var(--text-2);
  letter-spacing: -0.005em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.row-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-mute);
}
.row-meta .kind {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-dim);
}
.dot-sep { color: var(--text-dim); }

.row-actions {
  display: inline-flex;
  gap: 1px;
  opacity: 0;
  transition: opacity 200ms ease;
}
.layer-row:hover .row-actions { opacity: 1; }
.layer-row.has-tip .row-actions { opacity: 1; }

/* glossary tooltip (shown by default on Solar Irradiance for demo) */
.glossary-tip {
  position: absolute;
  top: calc(100% + 6px);
  left: 30px;
  width: 240px;
  background: #0F172A;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 10px 12px;
  z-index: 5;
  box-shadow: var(--shadow-2);
  pointer-events: none;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 200ms ease, transform 200ms ease;
}
.layer-row.has-tip:hover .glossary-tip,
.layer-row.has-tip.checked .glossary-tip {
  opacity: 1;
  transform: translateY(0);
}
.glossary-tip::before {
  content: "";
  position: absolute;
  top: -5px; left: 24px;
  width: 8px; height: 8px;
  background: #0F172A;
  border-left: 1px solid var(--border);
  border-top: 1px solid var(--border);
  transform: rotate(45deg);
}
.tip-label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--emerald-400);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.tip-body { color: var(--text); font-size: 12.5px; line-height: 1.45; }
.tip-source { color: var(--text-mute); font-size: 10.5px; margin-top: 6px; font-family: var(--font-mono); }

/* add data */
.add-data {
  margin: 12px 12px 18px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1.4px dashed var(--border);
  border-radius: var(--r-lg);
  color: var(--text-mute);
  text-align: left;
  transition: all 200ms ease;
}
.add-data:hover {
  border-color: var(--emerald-500);
  color: var(--emerald-400);
  background: rgba(16,185,129,.04);
}
.add-data > span:nth-child(2) {
  font-weight: 600;
  font-family: var(--font-display);
  color: var(--text);
  font-size: 13px;
}
.add-data:hover > span:nth-child(2) { color: var(--emerald-400); }
.add-hint {
  margin-left: auto;
  font-size: 10.5px;
  font-family: var(--font-mono);
  color: var(--text-dim);
}

/* ============================== CENTER: MAP ============================== */

.map {
  position: relative;
  background: var(--bg-2);
  overflow: hidden;
}

.basemap {
  position: absolute;
  inset: 0;
}
.bm-svg {
  width: 100%;
  height: 100%;
  display: block;
}
.bm-vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,.45) 100%),
    radial-gradient(ellipse at top right, rgba(16,185,129,.06) 0%, transparent 40%);
}

/* breadcrumb */
.breadcrumb {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 30px;
  padding: 0 12px;
  background: rgba(15,23,42,.78);
  border: 1px solid var(--border-soft);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 999px;
  color: var(--text-2);
  font-size: 12px;
  box-shadow: var(--shadow-2);
}
.breadcrumb svg { color: var(--emerald-400); }
.bc-item { letter-spacing: -0.005em; }
.bc-sep { color: var(--text-dim); }
.bc-item:last-child { color: var(--text-mute); }

/* map controls */
.map-ctrls {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ctrl-group {
  display: flex;
  flex-direction: column;
  background: rgba(15,23,42,.78);
  border: 1px solid var(--border-soft);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-2);
}
.ctrl {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  color: var(--text-2);
  border-bottom: 1px solid var(--border-soft);
  transition: background-color 180ms ease, color 180ms ease;
}
.ctrl:last-child { border-bottom: 0; }
.ctrl:hover { background: rgba(255,255,255,.05); color: var(--text); }

/* legend */
.legend {
  position: absolute;
  bottom: 88px;
  left: 14px;
  z-index: 4;
  width: 240px;
  padding: 12px 14px;
  background: rgba(15,23,42,.84);
  border: 1px solid var(--border-soft);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-2);
}
.legend-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin-bottom: 8px;
}
.legend-bar {
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--sky), var(--emerald-500), var(--amber), var(--rust));
}
.legend-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-mute);
}
.legend-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-soft);
  font-size: 11.5px;
  color: var(--text-2);
}
.legend-meta > span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.lg-swatch.dot.emerald {
  width: 8px; height: 8px; border-radius: 999px;
  background: var(--emerald-400);
  box-shadow: 0 0 0 2px rgba(16,185,129,.2);
}
.lg-swatch.sq.amber {
  width: 8px; height: 8px;
  background: var(--amber);
  transform: rotate(45deg);
}
.lg-swatch.line.dashed {
  width: 16px; height: 0;
  border-top: 1.5px dashed var(--amber);
}

/* coord pill */
.coord-pill {
  position: absolute;
  bottom: 14px;
  right: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background: rgba(15,23,42,.78);
  border: 1px solid var(--border-soft);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-mute);
  box-shadow: var(--shadow-2);
  z-index: 4;
}
.coord-pill .zoom { color: var(--text-dim); margin-left: 2px; }

/* selected feature popup */
.feat-popup {
  position: absolute;
  /* anchored near (990, 440) in viewBox 1600x1000; we approximate with %s */
  top: 30%;
  left: 52%;
  transform: translate(-50%, calc(-100% - 22px));
  width: 320px;
  background: rgba(15,23,42,.94);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 14px 16px 12px;
  box-shadow: var(--shadow-3);
  z-index: 6;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.fp-arrow {
  position: absolute;
  bottom: -6px; left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 12px; height: 12px;
  background: rgba(15,23,42,.94);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.fp-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}
.fp-title {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}
.fp-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 8px;
  background: rgba(16,185,129,.12);
  color: var(--emerald-400);
  border: 1px solid rgba(16,185,129,.32);
  border-radius: var(--r-sm);
}
.fp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
  padding: 8px 0 12px;
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 12px;
}
.fp-grid > div { display: flex; flex-direction: column; gap: 1px; }
.fp-k {
  font-size: 10.5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 500;
}
.fp-v {
  font-size: 13px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.fp-v.fp-good { color: var(--emerald-400); }
.fp-v.fp-no   { color: var(--amber); }

.fp-actions { display: flex; gap: 8px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--r-md);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: -0.005em;
  transition: all 180ms ease;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--emerald-600);
  color: white;
  box-shadow: 0 1px 0 rgba(255,255,255,.12) inset, 0 6px 14px rgba(5,150,105,.25);
}
.btn-primary:hover { background: var(--emerald-500); }
.btn-ghost {
  background: rgba(255,255,255,.04);
  border-color: var(--border);
  color: var(--text-2);
}
.btn-ghost:hover { background: var(--surface-3); color: var(--text); border-color: var(--border-strong); }

/* context strip */
.ctx-strip {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px;
  background: rgba(15,23,42,.86);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-3);
  max-width: calc(100% - 60px);
  flex-wrap: wrap;
  justify-content: center;
}

.ctx-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 28px;
  padding: 0 11px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: all 180ms ease;
}
.ctx-pill .pill-k {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-mute);
}
.ctx-pill .pill-num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.ctx-pill.primary {
  background: rgba(16,185,129,.12);
  border-color: rgba(16,185,129,.32);
  color: var(--emerald-400);
}
.ctx-pill.primary .pill-k { color: rgba(16,185,129,.7); }
.ctx-pill.primary:hover { background: rgba(16,185,129,.18); }
.ctx-pill.primary .x {
  display: inline-grid; place-items: center;
  width: 14px; height: 14px;
  border-radius: 999px;
  color: rgba(16,185,129,.6);
  margin-right: -4px;
  transition: all 180ms ease;
}
.ctx-pill.primary .x:hover { background: rgba(16,185,129,.2); color: var(--emerald-400); }

.ctx-pill.stat {
  background: rgba(255,255,255,.03);
  border-color: var(--border-soft);
  color: var(--text);
}
.ctx-pill.stat.amber { color: var(--amber); }
.ctx-pill.stat.amber .pill-k { color: rgba(245,158,11,.7); }

.ctx-pill.action {
  background: transparent;
  color: var(--text-mute);
}
.ctx-pill.action:hover { background: var(--surface-3); color: var(--text); }

.ctx-divider {
  width: 1px; height: 18px; background: var(--border-soft); margin: 0 4px;
}

/* ============================== RIGHT: AI ============================== */

.ai {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border-left: 1px solid var(--border-soft);
  position: relative;
}

/* subtle gradient edge — signals "this side is the AI" */
.ai::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 1px; height: 100%;
  background: linear-gradient(180deg,
    transparent 0%,
    rgba(16,185,129,.45) 25%,
    rgba(6,182,212,.45) 75%,
    transparent 100%);
  opacity: .7;
  pointer-events: none;
}

.ai-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-soft);
}

.ai-title {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
}
.ai-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: -0.01em;
  color: var(--text);
}
.ai-mode {
  margin-left: 4px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 6px;
  background: rgba(245,158,11,.10);
  color: var(--amber);
  border: 1px solid rgba(245,158,11,.28);
  border-radius: var(--r-sm);
}
.ai-actions { display: inline-flex; gap: 2px; }

/* AI gradient pulse */
.ai-pulse {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 16px; height: 16px;
}
.pulse-core {
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--grad-ai);
  box-shadow: 0 0 12px rgba(16,185,129,.7);
  animation: pulse-core 2.6s ease-in-out infinite;
}
.pulse-ring {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--grad-ai);
  opacity: .4;
  animation: pulse-ring 2.6s ease-out infinite;
}
@keyframes pulse-core {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}
@keyframes pulse-ring {
  0% { transform: scale(.5); opacity: .55; }
  80%, 100% { transform: scale(2); opacity: 0; }
}

/* ai context bar */
.ai-context {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(16,185,129,.04) 0%, transparent 100%);
}
.ctx-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11.5px;
  color: var(--text-mute);
}
.ctx-row strong { color: var(--text); font-weight: 600; }
.ctx-dot {
  width: 6px; height: 6px;
  border-radius: 999px;
  background: var(--emerald-500);
  box-shadow: 0 0 8px rgba(16,185,129,.6);
}

/* thread */
.ai-thread {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scrollbar-width: thin;
  scrollbar-color: #2a3650 transparent;
}
.ai-thread::-webkit-scrollbar { width: 8px; }
.ai-thread::-webkit-scrollbar-thumb { background: #2a3650; border-radius: 8px; }

.msg { display: flex; flex-direction: column; gap: 6px; max-width: 100%; }
.msg-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-mute);
}
.msg-meta .t { color: var(--text-dim); }

.msg .bubble {
  padding: 10px 12px;
  border-radius: var(--r-xl);
  font-size: 13px;
  line-height: 1.55;
  letter-spacing: -0.005em;
}

/* user */
.msg.user { align-items: flex-end; }
.msg.user .bubble {
  background: rgba(16,185,129,.10);
  border: 1px solid rgba(16,185,129,.22);
  color: var(--text);
  border-bottom-right-radius: 4px;
  max-width: 85%;
}
.msg.user .msg-meta { flex-direction: row-reverse; }

/* ai */
.msg.ai-msg .bubble {
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-bottom-left-radius: 4px;
  color: var(--text-2);
  max-width: 96%;
}
.ai-avatar {
  width: 16px; height: 16px;
  border-radius: 999px;
  background: var(--grad-ai);
  display: inline-block;
  box-shadow: 0 0 0 2px var(--surface), 0 0 8px rgba(16,185,129,.3);
}

/* inline chip inside ai message */
.inline-chip {
  display: inline-flex;
  align-items: center;
  height: 19px;
  padding: 0 7px;
  background: rgba(16,185,129,.10);
  color: var(--emerald-400);
  border: 1px solid rgba(16,185,129,.28);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: -0.01em;
  vertical-align: 1px;
  margin: 0 1px;
}

/* callout */
.callout {
  margin: 10px 0;
  padding: 12px 14px;
  background: linear-gradient(135deg, rgba(16,185,129,.08) 0%, rgba(6,182,212,.06) 100%);
  border: 1px solid rgba(16,185,129,.22);
  border-radius: var(--r-lg);
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.callout.tight { margin: 4px 0 8px; padding: 10px 12px; }
.callout-num {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--emerald-400);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.callout-label {
  font-size: 12px;
  color: var(--text-mute);
}
.hl { color: var(--emerald-400); font-weight: 600; }

/* chips (post-message quick actions) */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  font-size: 11.5px;
  color: var(--text-2);
  letter-spacing: -0.005em;
  transition: all 180ms ease;
}
.chip:hover {
  background: var(--surface-3);
  border-color: var(--border);
  color: var(--text);
  transform: translateY(-1px);
}
.chip svg { color: var(--text-mute); }
.chip:hover svg { color: var(--emerald-400); }

.chip.ghost {
  background: transparent;
  border-color: var(--border-soft);
  color: var(--text-mute);
}
.chip.ghost:hover {
  border-color: rgba(16,185,129,.32);
  color: var(--emerald-400);
  background: rgba(16,185,129,.06);
}
.chip.ghost.teach {
  border-color: rgba(6,182,212,.28);
  color: var(--cyan-500);
}
.chip.ghost.teach:hover {
  background: rgba(6,182,212,.08);
  border-color: rgba(6,182,212,.45);
}

/* thinking indicator */
.thinking {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0 0;
  color: var(--text-mute);
  font-size: 12px;
}
.thinking-label { font-style: italic; }
.dot-anim {
  width: 6px; height: 6px;
  border-radius: 999px;
  background: var(--grad-ai);
  display: inline-block;
  animation: dot-bounce 1.4s ease-in-out infinite;
}
.dot-anim:nth-child(2) { animation-delay: .15s; }
.dot-anim:nth-child(3) { animation-delay: .30s; margin-right: 4px; }
@keyframes dot-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: .55; }
  30%           { transform: translateY(-4px); opacity: 1; }
}

/* suggestions row */
.ai-suggest {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 14px 0;
}
.sg-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-right: 2px;
}

/* input */
.ai-input {
  margin: 10px 14px 0;
  padding: 6px 6px 6px 10px;
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  transition: border-color 200ms ease, box-shadow 200ms ease;
}
.ai-input:focus-within {
  border-color: rgba(16,185,129,.5);
  box-shadow: 0 0 0 3px rgba(16,185,129,.12);
}
.ai-input input {
  flex: 1;
  font-size: 13px;
  padding: 6px 4px;
  color: var(--text);
}
.ai-input input::placeholder { color: var(--text-mute); }
.input-ic { width: 28px; height: 28px; }
.input-ic.mic:hover { color: var(--cyan-500); }

.send {
  display: inline-grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: var(--r-md);
  background: var(--grad-ai);
  color: white;
  box-shadow: 0 6px 14px rgba(16,185,129,.25);
  transition: transform 180ms ease, box-shadow 180ms ease;
}
.send:hover { transform: translateY(-1px); box-shadow: 0 8px 18px rgba(16,185,129,.35); }

.ai-foot {
  padding: 8px 14px 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

/* ============================== RESPONSIVE TWEAKS ============================== */

@media (max-width: 1280px) {
  :root { --left-w: 264px; --right-w: 348px; }
  .search { width: min(440px, 48vw); }
}
@media (max-width: 1100px) {
  :root { --left-w: 240px; --right-w: 320px; }
}