/* ============================================================
   GFA Persona Matrix Lab — Design System
   ============================================================ */

:root {
  /* Color tokens — dark theme (default) */
  --ink-000: #08090c;
  --ink-050: #0c0e13;
  --ink-100: #131620;
  --ink-200: #1a1e2a;
  --ink-300: #232838;
  --ink-400: #2e3447;

  --bone-100: #f4efe2;
  --bone-200: #ebe5d4;
  --bone-300: #c5bfae;
  --bone-400: #8b8576;
  --bone-500: #5a5448;

  --signal: oklch(0.80 0.15 72);          /* warm amber */
  --signal-dim: oklch(0.65 0.10 72);
  --signal-soft: oklch(0.80 0.15 72 / 0.12);

  --cyan: oklch(0.78 0.12 220);           /* data cool */
  --cyan-dim: oklch(0.60 0.08 220);
  --cyan-soft: oklch(0.78 0.12 220 / 0.10);

  --alert: oklch(0.68 0.21 22);           /* coral red */
  --alert-dim: oklch(0.55 0.16 22);
  --alert-soft: oklch(0.68 0.21 22 / 0.12);

  --plant: oklch(0.74 0.13 145);          /* validity green */
  --plant-soft: oklch(0.74 0.13 145 / 0.12);

  --bg: var(--ink-050);
  --surface: var(--ink-100);
  --surface-2: var(--ink-200);
  --border: rgba(240, 236, 223, 0.07);
  --border-strong: rgba(240, 236, 223, 0.15);
  --text: var(--bone-100);
  --text-dim: var(--bone-300);
  --text-mute: var(--bone-400);

  /* Type */
  --font-sans: "Noto Sans KR", -apple-system, system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, "Menlo", monospace;
  --font-display: "Noto Sans KR", -apple-system, sans-serif;

  /* Sizes — slight bump for readability across UI */
  --fs-xs: 11px;
  --fs-sm: 12px;
  --fs-base: 14px;
  --fs-md: 15px;
  --fs-lg: 17px;
  --fs-xl: 22px;
  --fs-2xl: 28px;

  /* Density */
  --gap-xs: 4px;
  --gap-sm: 8px;
  --gap-md: 12px;
  --gap-lg: 18px;
  --gap-xl: 28px;

  --row-h: 28px;
  --cell-h: 32px;
}

[data-theme="light"] {
  --ink-000: #f6f4ee;
  --ink-050: #fbfaf5;
  --ink-100: #ffffff;
  --ink-200: #f1eee4;
  --ink-300: #e4dfd0;
  --ink-400: #cfc8b3;
  --bone-100: #1a1815;
  --bone-200: #2a2723;
  --bone-300: #4a463e;
  --bone-400: #6b6558;
  --bone-500: #908975;
  --border: rgba(20, 18, 14, 0.10);
  --border-strong: rgba(20, 18, 14, 0.22);
  --bg: var(--ink-050);
  --surface: var(--ink-100);
  --surface-2: var(--ink-200);
  --text: var(--bone-100);
  --text-dim: var(--bone-300);
  --text-mute: var(--bone-400);
}

[data-theme="accent"] {
  --ink-000: #2a1f10;
  --ink-050: #2c2113;
  --ink-100: #36281a;
  --ink-200: #422f1d;
  --ink-300: #533a23;
  --ink-400: #6b4b2d;
  --bone-100: #fff3df;
  --bone-200: #f1e1c2;
  --bone-300: #d8c193;
  --bone-400: #9d895d;
  --signal: oklch(0.86 0.16 75);
  --cyan: oklch(0.82 0.10 195);
  --border: rgba(255, 222, 170, 0.10);
  --border-strong: rgba(255, 222, 170, 0.22);
}

[data-density="compact"] {
  --gap-xs: 3px;
  --gap-sm: 6px;
  --gap-md: 9px;
  --gap-lg: 14px;
  --gap-xl: 20px;
  --row-h: 24px;
  --cell-h: 26px;
}

[data-density="comfortable"] {
  --gap-xs: 6px;
  --gap-sm: 12px;
  --gap-md: 18px;
  --gap-lg: 26px;
  --gap-xl: 38px;
  --row-h: 34px;
  --cell-h: 40px;
}

/* ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

html, body, #root {
  height: 100%;
  margin: 0;
  padding: 0;
  background: #08090c;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.55;
  letter-spacing: -0.005em;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow: hidden;
  position: relative;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

body[data-font-pair="pretendard"] {
  --font-sans: "Pretendard Variable", "Pretendard", -apple-system, system-ui, sans-serif;
}
body[data-font-pair="nanum"] {
  --font-sans: "Nanum Gothic", "Nanum Square", -apple-system, sans-serif;
}
body[data-font-pair="hahmlet"] {
  --font-sans: "Noto Sans KR", -apple-system, sans-serif;
  font-weight: 500;
}

/* Make all major panels float above motion backdrop */
.app-shell { position: relative; z-index: 1; }
body[data-motion="on"] { background: transparent; }
/* ============================================================
   Advanced — denser nav tabs, view context, quick actions
   ============================================================ */

.nav-tab .nav-tab-stack {
  display: flex; flex-direction: column;
  align-items: flex-start;
  line-height: 1.15;
}
.nav-tab .nav-tab-label {
  font-size: var(--fs-base);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.nav-tab .nav-tab-hint {
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--text-mute);
  margin-top: 2px;
  letter-spacing: 0;
  font-family: var(--font-sans);
}
.nav-tab[aria-current="true"] .nav-tab-hint { color: var(--signal); opacity: 0.7; }

.view-context {
  padding: 12px 24px;
  border-bottom: 1px solid var(--border);
  background: oklch(0.12 0.02 240 / 0.45);
}
.view-context-line {
  display: flex; align-items: center; gap: 14px;
  flex-wrap: wrap;
}
.view-context-icon {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  background: oklch(0.80 0.14 72 / 0.10);
  border: 1px solid oklch(0.80 0.14 72 / 0.30);
  color: var(--signal);
  font-size: 18px;
}
.view-context-text {
  display: flex; flex-direction: column; gap: 1px;
  min-width: 0;
}
.view-context-text strong {
  font-size: 16px; font-weight: 700;
  letter-spacing: -0.01em;
}
.view-context-text small {
  font-size: 12px; color: var(--text-dim);
}
.view-sub-tabs {
  display: flex; gap: 0;
  margin-left: auto;
  border: 1px solid var(--border-strong);
}
.view-sub-tabs button {
  padding: 6px 12px;
  background: oklch(0.10 0.02 240 / 0.5);
  border: none;
  border-right: 1px solid var(--border-strong);
  color: var(--text-dim);
  font-size: 12px;
  cursor: pointer;
  font-family: var(--font-sans);
}
.view-sub-tabs button:last-child { border-right: none; }
.view-sub-tabs button:hover { color: var(--text); background: rgba(255,240,220,0.06); }
.view-sub-tabs button[aria-pressed="true"] {
  background: var(--signal);
  color: var(--ink-000);
  font-weight: 600;
}

/* Quick action bar */
.qa-bar {
  position: fixed;
  bottom: 44px;
  right: 24px;
  z-index: 60;
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  background: oklch(0.10 0.02 240 / 0.88);
  backdrop-filter: blur(16px) saturate(140%);
  border: 1px solid rgba(255,240,220,0.12);
  box-shadow: 0 12px 32px rgba(0,0,0,0.35);
  border-radius: 0;
}
.qa-bar.is-expanded { padding: 6px 10px; }
.qa-summary {
  display: flex; flex-direction: column;
  padding-right: 12px;
  margin-right: 4px;
  border-right: 1px solid var(--border-strong);
}
.qa-summary strong { font-size: 12px; color: var(--text); }
.qa-mini { font-size: 10px; color: var(--text-dim); margin-top: 1px; font-family: var(--font-mono); }
.qa-mini strong { color: var(--signal); font-weight: 500; }
.qa-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px;
  background: rgba(255,240,220,0.06);
  border: 1px solid rgba(255,240,220,0.12);
  color: var(--text);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  font-family: var(--font-sans);
}
.qa-btn:hover:not(:disabled) {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink-000);
}
.qa-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.qa-btn-icon {
  font-family: var(--font-mono); font-size: 13px;
  color: var(--signal);
  width: 14px; text-align: center;
}
.qa-btn:hover:not(:disabled) .qa-btn-icon { color: var(--ink-000); }

.qa-save {
  display: flex; align-items: center; gap: 6px;
}
.qa-save input {
  width: 260px;
  background: oklch(0.08 0.01 240 / 0.7);
  border: 1px solid rgba(255,240,220,0.12);
  color: var(--text);
  padding: 7px 10px;
  font-size: 12px;
  font-family: var(--font-sans);
  outline: none;
}
.qa-save input:focus { border-color: var(--signal); }

.wizard-shell {
  height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}
.wizard-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  border-bottom: 1px solid rgba(255,240,220,0.06);
  background: oklch(0.10 0.02 240 / 0.55);
  backdrop-filter: blur(18px) saturate(140%);
  height: 64px;
  flex: 0 0 64px;
}
.wizard-header .brand {
  display: flex; align-items: center; gap: 12px;
  border-right: none;
  padding-right: 0;
  flex-shrink: 0;
}
.wizard-header .brand-name strong { white-space: nowrap; font-size: 16px; }
.wizard-header .brand-name small { white-space: nowrap; }
.wizard-header-actions {
  display: flex; align-items: center; gap: 14px;
}

/* Prominent "back to wizard" button in advanced header */
.back-to-wizard {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  background: linear-gradient(180deg, oklch(0.78 0.12 220 / 0.18), oklch(0.78 0.12 220 / 0.10));
  border: 1px solid oklch(0.78 0.12 220 / 0.45);
  color: var(--cyan);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  letter-spacing: -0.005em;
  transition: all 0.18s;
  border-radius: 2px;
}
.back-to-wizard:hover {
  background: linear-gradient(180deg, oklch(0.78 0.12 220 / 0.30), oklch(0.78 0.12 220 / 0.18));
  border-color: var(--cyan);
  color: oklch(0.92 0.06 220);
  box-shadow: 0 0 16px oklch(0.78 0.12 220 / 0.25);
}

body[data-motion="on"] {
  background: transparent;
}

/* Header / rails / footer — primary chrome */
body[data-motion="on"] .app-header,
body[data-motion="on"] .app-left,
body[data-motion="on"] .app-right,
body[data-motion="on"] .app-footer {
  background: linear-gradient(180deg,
    oklch(0.12 0.015 240 / 0.55),
    oklch(0.10 0.015 240 / 0.65));
  backdrop-filter: blur(22px) saturate(160%);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  border-color: rgba(255, 240, 220, 0.06);
}
body[data-motion="on"] .app-header { border-bottom: 1px solid rgba(255, 240, 220, 0.08); }
body[data-motion="on"] .app-left   { border-right: 1px solid rgba(255, 240, 220, 0.06); }
body[data-motion="on"] .app-right  { border-left:  1px solid rgba(255, 240, 220, 0.06); }
body[data-motion="on"] .app-footer { border-top: 1px solid rgba(255, 240, 220, 0.06); }

/* Panel cards — frosted glass */
body[data-motion="on"] .panel {
  background:
    linear-gradient(135deg, rgba(255, 240, 220, 0.03) 0%, transparent 50%),
    oklch(0.13 0.015 240 / 0.5);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid rgba(255, 240, 220, 0.08);
  box-shadow:
    0 1px 0 rgba(255, 240, 220, 0.04) inset,
    0 12px 32px rgba(0, 0, 0, 0.32),
    0 2px 6px rgba(0, 0, 0, 0.2);
  position: relative;
  overflow: hidden;
}
body[data-motion="on"] .panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0% 0%, oklch(0.80 0.14 72 / 0.04) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}
body[data-motion="on"] .panel > * { position: relative; z-index: 1; }

body[data-motion="on"] .panel-head {
  background: rgba(255, 240, 220, 0.03);
  border-bottom: 1px solid rgba(255, 240, 220, 0.06);
}

/* KPI cards — individual glass tiles with inner gradient */
body[data-motion="on"] .kpi {
  background:
    linear-gradient(160deg, rgba(255, 240, 220, 0.04), transparent 60%),
    oklch(0.13 0.015 240 / 0.45);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid rgba(255, 240, 220, 0.08);
  box-shadow:
    0 1px 0 rgba(255, 240, 220, 0.05) inset,
    0 6px 16px rgba(0, 0, 0, 0.22);
  position: relative;
  overflow: hidden;
}
body[data-motion="on"] .kpi::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at top right, oklch(0.80 0.14 72 / 0.08), transparent 55%);
  opacity: 0;
  transition: opacity 0.3s;
}
body[data-motion="on"] .kpi:hover::after { opacity: 1; }
body[data-motion="on"] .kpi.signal {
  border-color: oklch(0.80 0.14 72 / 0.32);
  box-shadow: 0 0 24px oklch(0.80 0.14 72 / 0.12), 0 6px 16px rgba(0, 0, 0, 0.22);
}
body[data-motion="on"] .kpi.cyan {
  border-color: oklch(0.78 0.12 220 / 0.28);
  box-shadow: 0 0 24px oklch(0.78 0.12 220 / 0.12), 0 6px 16px rgba(0, 0, 0, 0.22);
}
body[data-motion="on"] .kpi.plant {
  border-color: oklch(0.74 0.13 145 / 0.30);
  box-shadow: 0 0 24px oklch(0.74 0.13 145 / 0.12), 0 6px 16px rgba(0, 0, 0, 0.22);
}
body[data-motion="on"] .kpi.alert {
  border-color: oklch(0.68 0.21 22 / 0.32);
  box-shadow: 0 0 24px oklch(0.68 0.21 22 / 0.14), 0 6px 16px rgba(0, 0, 0, 0.22);
}

/* Reactive intel strip — glass with shimmer */
body[data-motion="on"] .ri-strip {
  background:
    linear-gradient(120deg,
      oklch(0.80 0.14 72 / 0.08) 0%,
      transparent 30%,
      oklch(0.78 0.12 220 / 0.05) 100%),
    oklch(0.13 0.015 240 / 0.50);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border: 1px solid rgba(255, 240, 220, 0.10);
  border-left: 2px solid var(--signal);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* Matrix cells — subtle glow */
body[data-motion="on"] .matrix-cell {
  background: oklch(0.13 0.015 240 / 0.6);
  border-color: rgba(255, 240, 220, 0.06);
}
body[data-motion="on"] .matrix-rowlabel,
body[data-motion="on"] .matrix-collabel {
  background: oklch(0.13 0.015 240 / 0.45);
  backdrop-filter: blur(8px);
  border-color: rgba(255, 240, 220, 0.08);
}

/* Buttons — glass effect */
body[data-motion="on"] .btn {
  background: rgba(255, 240, 220, 0.06);
  backdrop-filter: blur(8px);
  border-color: rgba(255, 240, 220, 0.12);
}
body[data-motion="on"] .btn:hover {
  background: rgba(255, 240, 220, 0.12);
  border-color: rgba(255, 240, 220, 0.22);
}
body[data-motion="on"] .btn[data-variant="primary"] {
  background: linear-gradient(180deg, oklch(0.85 0.15 72), oklch(0.72 0.14 72));
  border-color: oklch(0.72 0.14 72);
  box-shadow: 0 4px 12px oklch(0.80 0.14 72 / 0.32), inset 0 1px 0 rgba(255,255,255,0.2);
}

/* Inputs */
body[data-motion="on"] input[type="text"],
body[data-motion="on"] .panel input {
  background: rgba(255, 240, 220, 0.04);
  backdrop-filter: blur(6px);
  border-color: rgba(255, 240, 220, 0.12);
}

/* Tree rail visual lift */
body[data-motion="on"] .tree-row:hover {
  background: rgba(255, 240, 220, 0.05);
}
body[data-motion="on"] .tree-row.is-selected {
  background: oklch(0.80 0.14 72 / 0.12);
  color: var(--signal);
}

/* Persona/AI cards */
body[data-motion="on"] .persona-card,
body[data-motion="on"] .reco-card {
  background: oklch(0.13 0.015 240 / 0.55);
  backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid rgba(255, 240, 220, 0.10);
}

/* Subtle floating animation on KPI tiles */
@keyframes float-y {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-2px); }
}
body[data-motion="on"] .kpi {
  animation: float-y 6s ease-in-out infinite;
}
body[data-motion="on"] .kpi:nth-child(2n) { animation-delay: -1.5s; }
body[data-motion="on"] .kpi:nth-child(3n) { animation-delay: -3s; }
body[data-motion="on"] .kpi:nth-child(4n) { animation-delay: -4.5s; }

/* Glass shimmer on hover */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
body[data-motion="on"] .panel:hover::before {
  background:
    radial-gradient(circle at 0% 0%, oklch(0.80 0.14 72 / 0.06) 0%, transparent 40%),
    linear-gradient(120deg, transparent 30%, rgba(255, 240, 220, 0.04) 50%, transparent 70%);
  background-size: 200% 100%, 200% 100%;
  animation: shimmer 2.4s ease-out;
}

/* Cell hover glow */
body[data-motion="on"] .matrix-cell:hover {
  outline: 1px solid var(--signal);
  outline-offset: -1px;
  z-index: 5;
  box-shadow: 0 0 16px oklch(0.80 0.14 72 / 0.4);
}

/* Smooth view transitions (disabled to avoid re-render conflicts) */

/* Responsive */
@media (max-width: 1280px) {
  .app-shell { grid-template-columns: 280px 1fr 320px; }
}
@media (max-width: 1100px) {
  .app-shell { grid-template-columns: 260px 1fr; }
  .app-right { display: none; }
}
@media (max-width: 860px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: 56px auto auto 32px;
    grid-template-areas:
      "header"
      "left"
      "main"
      "footer";
  }
  .app-left { max-height: 220px; border-right: none; border-bottom: 1px solid var(--border); }
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--ink-300); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-400); }

/* ============================================================
   Layout
   ============================================================ */

.app-shell {
  display: grid;
  grid-template-columns: 320px 1fr 360px;
  grid-template-rows: 60px 1fr 36px;
  grid-template-areas:
    "header header header"
    "left   main   right"
    "footer footer footer";
  height: 100vh;
  width: 100vw;
}
.app-shell.no-right {
  grid-template-columns: 320px 1fr;
  grid-template-areas:
    "header header"
    "left   main  "
    "footer footer";
}

/* Header toggle buttons */
.hdr-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px;
  background: rgba(255,240,220,0.04);
  border: 1px solid rgba(255,240,220,0.12);
  color: var(--text-dim);
  font-size: var(--fs-sm);
  font-weight: 500;
  cursor: pointer;
  letter-spacing: 0;
  font-family: var(--font-sans);
  transition: all 0.15s;
}
.hdr-toggle:hover { color: var(--text); border-color: rgba(255,240,220,0.22); }

.app-header { grid-area: header; }
.app-left   { grid-area: left;   border-right: 1px solid var(--border); overflow: hidden; display: flex; flex-direction: column; }
.app-main   { grid-area: main;   overflow: hidden; display: flex; flex-direction: column; background: var(--bg); }
.app-right  { grid-area: right;  border-left: 1px solid var(--border); overflow: hidden; display: flex; flex-direction: column; }
.app-footer { grid-area: footer; }

/* ============================================================
   Header
   ============================================================ */

.app-header {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  padding: 0 var(--gap-lg);
  gap: var(--gap-lg);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
  padding-right: var(--gap-lg);
  border-right: 1px solid var(--border);
}

.brand-mark {
  width: 28px; height: 28px;
  position: relative;
  display: grid;
  place-items: center;
}
.brand-mark::before, .brand-mark::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--signal);
}
.brand-mark::before { transform: rotate(0deg); }
.brand-mark::after { transform: rotate(45deg); border-color: var(--cyan); opacity: .5; }
.brand-mark > span {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--signal);
  letter-spacing: 0.05em;
}

.brand-name {
  display: flex; flex-direction: column;
  line-height: 1.1;
}
.brand-name strong {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
}
.brand-name small {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-mute);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 1px;
}

.nav-tabs {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex: 1;
}

.nav-tab {
  display: flex; align-items: center;
  gap: 8px;
  padding: 0 18px;
  height: 100%;
  background: none;
  border: none;
  border-right: 1px solid var(--border);
  color: var(--text-dim);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  position: relative;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.nav-tab:hover { color: var(--text); background: var(--ink-200); }
.nav-tab[aria-current="true"] {
  color: var(--text);
  background: var(--ink-200);
}
.nav-tab[aria-current="true"]::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -1px; height: 2px;
  background: var(--signal);
}
.nav-tab .idx {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-mute);
  margin-right: 2px;
}
.nav-tab[aria-current="true"] .idx { color: var(--signal); }

.header-meta {
  display: flex; align-items: center;
  gap: var(--gap-md);
  padding-left: var(--gap-lg);
  border-left: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-mute);
}
.header-meta .pulse {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--plant);
  box-shadow: 0 0 8px var(--plant);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ============================================================
   Footer / status bar
   ============================================================ */

.app-footer {
  display: flex;
  align-items: center;
  gap: var(--gap-lg);
  padding: 0 var(--gap-lg);
  border-top: 1px solid var(--border);
  background: var(--surface);
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  color: var(--text-dim);
  letter-spacing: 0;
}
.app-footer .seg { display: flex; align-items: center; gap: 6px; }
.app-footer .seg strong { color: var(--text); font-weight: 600; }
.app-footer .sep { color: var(--text-mute); opacity: 0.55; }

/* ============================================================
   Panels / cards
   ============================================================ */

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--ink-100);
  gap: 10px;
  min-height: 44px;
}
.panel-head h3 {
  margin: 0;
  font-size: var(--fs-md);
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--text);
  display: flex; align-items: center; gap: 8px;
  white-space: nowrap;
}
.panel-head h3 .tag {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: none;
  color: var(--text-mute);
  padding: 1px 5px;
  border: 1px solid var(--border-strong);
}

.panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
}

.panel-body.no-pad { padding: 0; }

/* ============================================================
   Generic UI
   ============================================================ */

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px;
  background: var(--ink-200);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: all 0.12s;
}
.btn:hover { background: var(--ink-300); border-color: var(--text-mute); }
.btn[data-variant="primary"] {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink-000);
  font-weight: 500;
}
.btn[data-variant="primary"]:hover {
  background: oklch(0.85 0.15 72);
}
.btn[data-variant="ghost"] {
  background: transparent;
  border-color: var(--border);
}
.btn[data-variant="ghost"]:hover {
  border-color: var(--border-strong);
}
.btn[data-variant="alert"] {
  border-color: var(--alert);
  color: var(--alert);
}
.btn[data-size="sm"] { padding: 4px 9px; font-size: var(--fs-xs); }

.chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--ink-200);
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.chip[data-tone="signal"] { background: var(--signal-soft); border-color: var(--signal); color: var(--signal); }
.chip[data-tone="cyan"]   { background: var(--cyan-soft);   border-color: var(--cyan);   color: var(--cyan); }
.chip[data-tone="plant"]  { background: var(--plant-soft);  border-color: var(--plant);  color: var(--plant); }
.chip[data-tone="alert"]  { background: var(--alert-soft);  border-color: var(--alert);  color: var(--alert); }

.kbd {
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 1px 4px;
  border: 1px solid var(--border-strong);
  border-radius: 2px;
  color: var(--text-mute);
}

.mono { font-family: var(--font-mono); }
.dim { color: var(--text-dim); }
.mute { color: var(--text-mute); }

.label {
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text-dim);
}

.divider {
  height: 1px;
  background: var(--border);
  margin: var(--gap-md) 0;
}

/* Range slider */
.range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2px;
  background: var(--ink-300);
  outline: none;
  cursor: pointer;
}
.range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px; height: 10px;
  background: var(--signal);
  border: 2px solid var(--ink-050);
  cursor: pointer;
}
.range::-moz-range-thumb {
  width: 10px; height: 10px;
  background: var(--signal);
  border: 2px solid var(--ink-050);
  cursor: pointer;
  border-radius: 0;
}

/* Checkbox-like square toggle */
.tog {
  display: inline-flex; align-items: center; gap: 6px;
  cursor: pointer;
  user-select: none;
  font-size: 11px;
}
.tog .box {
  width: 12px; height: 12px;
  border: 1px solid var(--border-strong);
  background: var(--ink-100);
  display: grid; place-items: center;
}
.tog input { display: none; }
.tog input:checked + .box {
  background: var(--signal);
  border-color: var(--signal);
}
.tog input:checked + .box::after {
  content: '';
  width: 4px; height: 7px;
  border: solid var(--ink-000);
  border-width: 0 1.5px 1.5px 0;
  transform: translateY(-1px) rotate(45deg);
}

/* Segmented control */
.seg-control {
  display: inline-flex;
  border: 1px solid var(--border-strong);
}
.seg-control button {
  padding: 4px 10px;
  background: var(--ink-100);
  border: none;
  border-right: 1px solid var(--border-strong);
  color: var(--text-dim);
  cursor: pointer;
  font-size: 10px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.seg-control button:last-child { border-right: none; }
.seg-control button[aria-pressed="true"] {
  background: var(--ink-300);
  color: var(--text);
}

/* Bar */
.bar {
  height: 4px;
  background: var(--ink-300);
  position: relative;
  overflow: hidden;
}
.bar > div { height: 100%; background: var(--signal); }

/* Crosshatch placeholder */
.hatch {
  background-image: repeating-linear-gradient(
    45deg,
    transparent 0 4px,
    rgba(240,236,223,0.04) 4px 5px
  );
}

/* ============================================================
   Matrix heatmap
   ============================================================ */

.matrix-wrap {
  position: relative;
  overflow: auto;
  flex: 1;
}

.matrix-grid {
  display: grid;
  font-family: var(--font-mono);
  font-size: 10px;
}

.matrix-cell {
  position: relative;
  border: 1px solid var(--ink-050);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: outline 0.08s;
  background: var(--ink-100);
  user-select: none;
}
.matrix-cell:hover {
  outline: 1px solid var(--signal);
  outline-offset: -1px;
  z-index: 2;
}
.matrix-cell .v {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--bone-100);
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
  font-weight: 500;
}
.matrix-cell[data-mode="dot"] .v {
  width: var(--dot);
  height: var(--dot);
  background: var(--signal);
  border-radius: 50%;
  font-size: 0;
}

.matrix-rowlabel, .matrix-collabel {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text);
  padding: 4px 8px;
  display: flex;
  align-items: center;
  border: 1px solid var(--ink-050);
  background: var(--ink-100);
}
.matrix-collabel {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  justify-content: center;
  padding: 8px 4px;
  white-space: nowrap;
}

/* ============================================================
   Tree
   ============================================================ */

.tree-node {
  display: flex;
  flex-direction: column;
}
.tree-row {
  display: flex; align-items: center; gap: 5px;
  height: var(--row-h);
  padding: 0 4px;
  cursor: pointer;
  font-size: 11px;
  border-radius: 0;
}
.tree-row:hover { background: var(--ink-200); }
.tree-row.is-leaf { font-family: var(--font-mono); font-size: 10px; color: var(--text-dim); }
.tree-row.is-selected { color: var(--signal); }
.tree-row .caret {
  width: 12px; display: inline-block; text-align: center;
  color: var(--text-mute);
  font-family: var(--font-mono);
  font-size: 8px;
}
.tree-row .count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-mute);
}

/* ============================================================
   Misc
   ============================================================ */

.kpi {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: var(--ink-100);
}
.kpi .name {
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--text-dim);
}
.kpi .val {
  font-family: var(--font-mono);
  font-size: var(--fs-xl);
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.15;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.kpi .sub {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-dim);
}
.kpi.signal .val { color: var(--signal); }
.kpi.cyan .val { color: var(--cyan); }
.kpi.plant .val { color: var(--plant); }
.kpi.alert .val { color: var(--alert); }

.bar-row {
  display: grid;
  grid-template-columns: 80px 1fr 60px;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 3px 0;
}
.bar-row .bar { flex: 1; }
.bar-row .v { text-align: right; color: var(--text-dim); }
.bar-row .l { color: var(--text-dim); }

/* spin */
.spin {
  display: inline-block;
  width: 8px; height: 8px;
  border: 1px solid var(--signal);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }