@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root,
[data-theme="dark"] {
  --bg-0: oklch(0.170 0.020 300);
  --bg-1: oklch(0.212 0.026 300);
  --bg-1b: oklch(0.236 0.030 300);
  --bg-2: oklch(0.268 0.034 300);
  --bg-3: oklch(0.312 0.038 300);
  --bg-inset: oklch(0.138 0.016 300);
  --line: oklch(1 0 0 / 0.09);
  --line-strong: oklch(1 0 0 / 0.17);
  --text-0: oklch(0.967 0.010 300);
  --text-1: oklch(0.760 0.018 300);
  --text-2: oklch(0.600 0.022 300);
  --text-3: oklch(0.485 0.022 300);
  --accent: oklch(0.585 0.258 300);
  --accent-soft: color-mix(in oklch, var(--accent) 20%, transparent);
  --accent-line: color-mix(in oklch, var(--accent) 48%, transparent);
  --accent-fg: oklch(0.99 0.004 300);
  --st-ok: oklch(0.74 0.15 150);
  --st-ng: oklch(0.66 0.19 25);
  --st-warn: oklch(0.81 0.14 92);
  --shadow-panel: none;
  --shadow-pop: 0 6px 20px -8px oklch(0 0 0 / 0.60), 0 0 0 1px var(--line);
  --body-wash:
    radial-gradient(circle at 8% -10%, color-mix(in oklch, var(--accent) 28%, transparent), transparent 32rem),
    radial-gradient(circle at 94% 10%, oklch(0.32 0.10 232 / 0.35), transparent 28rem),
    linear-gradient(135deg, var(--bg-inset), var(--bg-0) 58%, oklch(0.130 0.018 310));
  color-scheme: dark;
}

:root { --pad-panel: 18px; --gap-grid: 14px; --row-pad: 0.9rem; --module-min: 200px; }
[data-density="compact"] { --pad-panel: 12px; --gap-grid: 9px; --row-pad: 0.62rem; --module-min: 156px; font-size: 12.5px; }
[data-density="comfortable"] { --pad-panel: 18px; --gap-grid: 14px; --row-pad: 0.9rem; --module-min: 200px; }

[data-theme="light"] {
  --bg-0: oklch(0.955 0.004 256);
  --bg-1: oklch(0.995 0.002 256);
  --bg-1b: oklch(0.975 0.003 256);
  --bg-2: oklch(0.945 0.005 256);
  --bg-3: oklch(0.910 0.006 256);
  --bg-inset: oklch(0.925 0.005 256);
  --line: oklch(0 0 0 / 0.09);
  --line-strong: oklch(0 0 0 / 0.16);
  --text-0: oklch(0.255 0.012 256);
  --text-1: oklch(0.430 0.012 256);
  --text-2: oklch(0.560 0.012 256);
  --text-3: oklch(0.660 0.011 256);
  --accent: oklch(0.55 0.155 300);
  --accent-soft: color-mix(in oklch, var(--accent) 12%, transparent);
  --accent-line: color-mix(in oklch, var(--accent) 42%, transparent);
  --accent-fg: oklch(0.99 0.003 256);
  --st-ok: oklch(0.58 0.16 150);
  --st-ng: oklch(0.56 0.21 27);
  --st-warn: oklch(0.70 0.15 78);
  --shadow-panel: none;
  --shadow-pop: 0 6px 20px -8px oklch(0 0 0 / 0.22), 0 0 0 1px var(--line);
  --body-wash:
    radial-gradient(circle at 9% -10%, color-mix(in oklch, var(--accent) 13%, transparent), transparent 32rem),
    radial-gradient(circle at 94% 6%, oklch(0.74 0.10 232 / 0.18), transparent 28rem),
    linear-gradient(135deg, oklch(0.985 0.004 300), var(--bg-0) 58%, oklch(0.925 0.010 300));
  color-scheme: light;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg-0); }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text-0);
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 13.5px;
  background: var(--body-wash);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection { background: var(--accent-soft); }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 99px; border: 3px solid transparent; background-clip: padding-box; }
*::-webkit-scrollbar-track { background: transparent; }

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem 0.85rem;
  background: var(--bg-inset);
  color: var(--text-0);
  outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent-line); box-shadow: 0 0 0 3px var(--accent-soft); }
textarea { resize: vertical; }
button {
  border: 0;
  border-radius: 9px;
  padding: 0.72rem 1rem;
  color: var(--accent-fg);
  background: var(--accent);
  cursor: pointer;
  font-weight: 600;
  box-shadow: none;
}
button:hover { filter: brightness(1.05); }
button.ghost { background: transparent; color: var(--text-1); border: 1px solid var(--line); }
button.danger { background: var(--st-ng); color: white; }
label { display: grid; gap: 0.38rem; color: var(--text-2); font-size: 12.5px; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 58px;
  padding: 0.85rem clamp(1rem, 4vw, 2rem);
  background: color-mix(in oklch, var(--bg-0) 82%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.topbar::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), color-mix(in oklch, var(--accent) 32%, transparent));
}
.brand { display: inline-flex; flex-shrink: 0; align-items: center; gap: 0.65rem; font-weight: 800; letter-spacing: 0.18em; text-transform: uppercase; white-space: nowrap; }
.brand::before { content: "H"; display: grid; place-items: center; width: 26px; height: 26px; border-radius: 7px; border: 1.5px solid var(--accent); color: var(--accent); letter-spacing: 0; font-family: 'IBM Plex Mono', monospace; }
.topbar nav { display: flex; gap: 0.55rem; flex-wrap: wrap; color: var(--text-2); }
.topbar nav a { padding: 0.45rem 0.65rem; border-radius: 8px; }
.topbar nav a:hover { color: var(--text-0); background: var(--bg-1); }

.page { width: min(1180px, calc(100% - 2rem)); margin: 0 auto; padding: 2rem 0 7rem; }
.hero, .scope-hero {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 1rem;
  align-items: stretch;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: color-mix(in oklch, var(--bg-1) 88%, transparent);
  box-shadow: var(--shadow-pop);
}
.scope-hero { grid-template-columns: 1fr minmax(210px, 0.28fr) auto auto; position: relative; overflow: hidden; }
.scope-hero::after {
  content: "";
  position: absolute;
  inset: auto -8% -45% 35%;
  height: 220px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--accent-soft), transparent);
  transform: rotate(-4deg);
  pointer-events: none;
}
h1 { margin: 0 0 1rem; font-size: clamp(2rem, 5vw, 4.4rem); line-height: 0.98; letter-spacing: -0.055em; word-break: keep-all; overflow-wrap: normal; }
h1 span { color: var(--accent); }
h2 { margin: 0 0 0.8rem; font-size: 1.05rem; letter-spacing: -0.01em; }
h3 { margin: -0.4rem 0 0.8rem; color: var(--accent); font-size: 0.92rem; }
p { line-height: 1.55; }
.hero-copy { max-width: 720px; color: var(--text-1); font-size: 1rem; }
.eyebrow { margin: 0 0 0.8rem; color: var(--accent); font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; }
.muted { color: var(--text-2); }
.hero-stat {
  min-width: 124px;
  display: grid;
  align-content: center;
  padding: 1rem;
  border-radius: 14px;
  background: var(--bg-inset);
  border: 1px solid var(--line);
}
.hero-stat strong { font-size: 2.2rem; font-family: 'IBM Plex Mono', monospace; }
.hero-stat span { color: var(--text-2); }
.scope-status {
  display: grid;
  gap: 0.55rem;
  min-width: 220px;
  padding: 1rem;
  border-radius: 14px;
  background: var(--bg-inset);
  border: 1px solid var(--line);
}
.scope-status div { display: flex; justify-content: space-between; gap: 1rem; border-bottom: 1px solid var(--line); padding-bottom: 0.5rem; }
.scope-status div:last-child { border-bottom: 0; padding-bottom: 0; }
.scope-status span { color: var(--text-3); font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.12em; }
.scope-status strong { color: var(--text-0); font-weight: 700; }
.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--gap-grid); margin-top: 1.2rem; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap-grid); margin-top: 1.2rem; }
.board-shell {
  margin-top: 1.2rem;
  padding: var(--pad-panel);
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: color-mix(in oklch, var(--bg-inset) 54%, transparent);
  box-shadow: var(--shadow-panel);
}
.board-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.board-header h2 { margin: 0; font-size: 1.35rem; }
.recursive-board { margin-top: 1rem; }
.panel, .module-card, .login-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in oklch, var(--bg-1) 92%, transparent);
  box-shadow: var(--shadow-panel);
}
.panel { padding: var(--pad-panel); margin-top: 1.2rem; overflow: hidden; }
.panel > h2:first-child { margin: calc(var(--pad-panel) * -1) calc(var(--pad-panel) * -1) var(--pad-panel); padding: 0 var(--pad-panel); min-height: 44px; display: flex; align-items: center; border-bottom: 1px solid var(--line); background: var(--bg-1b); }
.module-card { padding: var(--pad-panel); min-height: var(--module-min); transition: transform 160ms ease, border-color 160ms ease, background 160ms ease; }
.module-card:hover { transform: translateY(-3px); border-color: var(--accent-line); background: var(--bg-1b); }
.module-card span { color: var(--accent); font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.12em; }
.module-card.planned { opacity: 0.70; }
.module-card footer { margin-top: 1.1rem; color: var(--text-3); font-family: 'IBM Plex Mono', monospace; font-size: 0.74rem; }
.module-card[data-card="scope"] { border-color: var(--accent-line); background: linear-gradient(145deg, var(--bg-1b), color-mix(in oklch, var(--accent) 10%, var(--bg-1))); }
.evidence-surface { align-items: start; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: var(--row-pad) 0; border-bottom: 1px solid var(--line); }
.row:last-child { border-bottom: 0; }
.row span { color: var(--text-2); }
.row.wide { align-items: flex-start; }
.actions { display: flex; gap: 0.5rem; }
.approval-lines { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.8rem; }
.org-strip { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.people-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.person-card { min-height: 172px; }
.pill { display: inline-flex; align-items: center; border: 1px solid var(--line); border-radius: 999px; padding: 0.35rem 0.65rem; background: var(--bg-inset); color: var(--accent); font-family: 'IBM Plex Mono', monospace; font-size: 0.78rem; }
.stack { display: grid; gap: 1rem; }
.form-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; align-items: end; }
.alert { margin: 1rem 0; padding: 0.9rem 1rem; border-radius: 12px; background: color-mix(in oklch, var(--st-ng) 14%, var(--bg-1)); color: var(--st-ng); border: 1px solid color-mix(in oklch, var(--st-ng) 45%, transparent); }
.notice { margin: 1rem 0; padding: 0.9rem 1rem; border-radius: 12px; background: color-mix(in oklch, var(--st-ok) 14%, var(--bg-1)); color: var(--st-ok); border: 1px solid color-mix(in oklch, var(--st-ok) 45%, transparent); }
.settings-panel { border-color: var(--accent-line); }
.settings-grid { grid-template-columns: repeat(4, minmax(0, 1fr)) auto; }
.leave-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.wide-field { grid-column: 1 / -2; }
.login-shell { display: grid; place-items: center; padding: 1rem; }
.login-card { width: min(540px, 100%); padding: clamp(1.5rem, 5vw, 3rem); border-color: var(--line-strong); box-shadow: var(--shadow-pop); }
.login-card h1 { font-size: clamp(2rem, 11vw, 3.9rem); line-height: 1.04; }
.login-title { white-space: nowrap; }

.theme-switch {
  position: fixed;
  left: 16px;
  bottom: 14px;
  z-index: 50;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 4px 4px 4px 12px;
  background: color-mix(in oklch, var(--bg-inset) 82%, transparent);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  box-shadow: var(--shadow-pop);
  opacity: 0.44;
  transition: opacity 0.2s ease;
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
}
.theme-switch:hover { opacity: 1; }
.theme-switch .label { font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-3); margin-right: 4px; }
.theme-switch button { background: transparent; color: var(--text-2); padding: 6px 10px; border-radius: 8px; box-shadow: none; font-size: 12px; }
.theme-switch button:hover { color: var(--text-0); }
.theme-switch button[aria-pressed="true"] { background: var(--accent-soft); color: var(--text-0); }
.bottom-composer {
  position: fixed;
  left: 50%;
  bottom: 14px;
  z-index: 45;
  width: min(900px, calc(100% - 2rem));
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: color-mix(in oklch, var(--bg-inset) 86%, transparent);
  box-shadow: var(--shadow-pop);
  backdrop-filter: blur(16px);
}
.bottom-composer span, .bottom-composer strong {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.65rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.74rem;
}
.bottom-composer span { color: var(--text-2); background: var(--bg-1); }
.bottom-composer strong { color: var(--accent); background: var(--accent-soft); }
.deck-panel { padding-bottom: var(--pad-panel); }
.deck-frame {
  width: 100%;
  height: min(72vh, 820px);
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--bg-inset);
}

@media (max-width: 900px) {
  .hero, .scope-hero, .split, .grid, .form-grid { grid-template-columns: 1fr; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .row, .row.wide { align-items: flex-start; flex-direction: column; }
  .board-header { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 640px) {
  .theme-switch { left: 10px; bottom: 10px; padding-left: 10px; }
  .theme-switch .label { display: none; }
}