/* Mind Lab shared design system. Each prototype sets its own --accent on :root. */

:root {
  --accent: #3d6fd9;
  --accent-ink: #ffffff;
  --accent-soft: color-mix(in srgb, var(--accent) 12%, var(--surface));
  --accent-line: color-mix(in srgb, var(--accent) 35%, var(--border));

  --bg: #f6f5f2;
  --surface: #ffffff;
  --surface-2: #f0efeb;
  --text: #1f2328;
  --muted: #5d636b;
  --faint: #8a9098;
  --border: #e2e0da;
  --shadow: 0 1px 2px rgb(20 20 20 / 0.04), 0 4px 16px rgb(20 20 20 / 0.05);

  --ok: #2f8a5b;
  --warn: #b7791f;
  --danger: #c2413b;
  --ok-soft: color-mix(in srgb, var(--ok) 12%, var(--surface));
  --warn-soft: color-mix(in srgb, var(--warn) 14%, var(--surface));
  --danger-soft: color-mix(in srgb, var(--danger) 12%, var(--surface));

  /* Chart series palette */
  --c1: var(--accent);
  --c2: #d9822b;
  --c3: #2f8a5b;
  --c4: #8e5bd0;
  --c5: #c2413b;
  --c6: #2a9bb5;

  --radius: 14px;
  --radius-sm: 9px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: var(--font);
  --mono: ui-monospace, "Cascadia Code", Consolas, monospace;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15171a;
    --surface: #1d2024;
    --surface-2: #24282d;
    --text: #e8eaed;
    --muted: #a5abb3;
    --faint: #7b828b;
    --border: #30353b;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 4px 16px rgb(0 0 0 / 0.25);
    --c2: #e89a4f;
    --c3: #4fb07f;
    --c4: #a982e0;
    --c5: #e0645e;
    --c6: #4cb8d0;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #15171a;
  --surface: #1d2024;
  --surface-2: #24282d;
  --text: #e8eaed;
  --muted: #a5abb3;
  --faint: #7b828b;
  --border: #30353b;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 4px 16px rgb(0 0 0 / 0.25);
  --c2: #e89a4f;
  --c3: #4fb07f;
  --c4: #a982e0;
  --c5: #e0645e;
  --c6: #4cb8d0;
  color-scheme: dark;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; margin: 0 0 0.5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 0.9em; }
a { color: var(--accent); }
small, .small { font-size: 0.86rem; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
hr { border: 0; border-top: 1px solid var(--border); margin: 1.25rem 0; }

/* ---------- Layout ---------- */

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.app-header .inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.7rem 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--text); font-weight: 650; font-size: 1.08rem; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 10px;
  display: grid; place-items: center;
  background: var(--accent); color: var(--accent-ink);
  font-weight: 700; font-size: 0.95rem;
}
.brand small { display: block; font-weight: 450; color: var(--muted); font-size: 0.78rem; line-height: 1.1; }

.nav { display: flex; gap: 0.25rem; flex-wrap: wrap; margin-left: auto; }
.nav button, .nav a {
  border: 0; background: transparent; color: var(--muted);
  padding: 0.45rem 0.8rem; border-radius: 999px; cursor: pointer;
  font: inherit; font-size: 0.93rem; text-decoration: none;
}
.nav button:hover, .nav a:hover { background: var(--surface-2); color: var(--text); }
.nav button[aria-current="page"], .nav a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

/* Phones: brand + status on one line, nav as a single scrollable row beneath. */
@media (max-width: 640px) {
  .app-header .inner { gap: 0.4rem 0.75rem; padding: 0.55rem 1rem 0.4rem; }
  .app-header [data-mind-status] { margin-left: auto; }
  .nav { order: 3; width: 100%; margin: 0 -0.5rem; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
  .nav::-webkit-scrollbar { display: none; }
  .nav button, .nav a { white-space: nowrap; padding: 0.4rem 0.7rem; }
}

.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 1.5rem 1rem 3rem; flex: 1; }
.narrow { max-width: 760px; margin-inline: auto; }

.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 860px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.row { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.stack > * + * { margin-top: 1rem; }
.stack-sm > * + * { margin-top: 0.5rem; }
.spacer { flex: 1; }

.view[hidden] { display: none !important; }

/* ---------- Surfaces ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}
.card.flat { box-shadow: none; }
.card.accent { border-color: var(--accent-line); background: var(--accent-soft); }
.card h2:first-child, .card h3:first-child { margin-top: 0; }
.card-title { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; margin-bottom: 0.75rem; }
.card-title h2, .card-title h3 { margin: 0; }

.hero { padding: 1.5rem 0 0.5rem; }
.hero p { color: var(--muted); font-size: 1.08rem; max-width: 62ch; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem; font-weight: 650; color: var(--accent); margin-bottom: 0.4rem; }

.kpi { display: flex; flex-direction: column; gap: 0.15rem; }
.kpi .value { font-size: 1.8rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; }
.kpi .label { color: var(--muted); font-size: 0.86rem; }
.kpi .delta { font-size: 0.84rem; font-weight: 600; }
.kpi .delta.up { color: var(--ok); }
.kpi .delta.down { color: var(--danger); }

.callout {
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  background: var(--surface-2);
}
.callout.info { background: var(--accent-soft); border-color: var(--accent-line); }
.callout.ok { background: var(--ok-soft); border-color: color-mix(in srgb, var(--ok) 35%, var(--border)); }
.callout.warn { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 40%, var(--border)); }
.callout.danger { background: var(--danger-soft); border-color: color-mix(in srgb, var(--danger) 40%, var(--border)); }
.callout > :last-child { margin-bottom: 0; }

.empty { text-align: center; padding: 2rem 1rem; color: var(--muted); }

/* ---------- Controls ---------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.45rem;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 0.6rem 1.05rem; border-radius: 999px;
  font: inherit; font-weight: 600; font-size: 0.95rem;
  cursor: pointer; text-decoration: none; line-height: 1.2;
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
}
.btn:hover { background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { background: color-mix(in srgb, var(--accent) 88%, black); }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.ghost:hover { background: var(--surface-2); }
.btn.danger { color: var(--danger); }
.btn.sm { padding: 0.38rem 0.75rem; font-size: 0.85rem; }
.btn.lg { padding: 0.8rem 1.4rem; font-size: 1.02rem; }
.btn.block { width: 100%; }

.field { display: flex; flex-direction: column; gap: 0.35rem; margin-bottom: 1rem; }
.field label, .label { font-weight: 600; font-size: 0.92rem; }
.field .hint { color: var(--muted); font-size: 0.84rem; }

input[type="text"], input[type="email"], input[type="password"], input[type="number"], input[type="date"], input[type="search"], select, textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.8rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
textarea { min-height: 120px; resize: vertical; line-height: 1.5; }
input:focus, select:focus, textarea:focus, .btn:focus-visible, button:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
input[type="range"] { width: 100%; accent-color: var(--accent); }
input[type="checkbox"], input[type="radio"] { accent-color: var(--accent); width: 1.05rem; height: 1.05rem; }

.choice-group { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.choice {
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 0.5rem 0.9rem; border-radius: 999px; cursor: pointer; font: inherit; font-size: 0.92rem;
}
.choice:hover { border-color: var(--accent-line); }
.choice[aria-pressed="true"], .choice.selected { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.scale { display: grid; grid-template-columns: repeat(var(--steps, 5), 1fr); gap: 0.35rem; }
.scale button { padding: 0.55rem 0; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--surface); cursor: pointer; font: inherit; color: var(--text); }
.scale button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.tabs { display: flex; gap: 0.25rem; border-bottom: 1px solid var(--border); margin-bottom: 1rem; overflow-x: auto; }
.tabs button { border: 0; background: transparent; padding: 0.6rem 0.9rem; font: inherit; color: var(--muted); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.tabs button[aria-selected="true"] { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

/* ---------- Data display ---------- */

.chip {
  display: inline-flex; align-items: center; gap: 0.3rem;
  padding: 0.2rem 0.6rem; border-radius: 999px;
  background: var(--surface-2); color: var(--text);
  font-size: 0.8rem; font-weight: 550; border: 1px solid var(--border);
}
.chip.accent { background: var(--accent-soft); color: var(--accent); border-color: var(--accent-line); }
.chip.ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.chip.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.chip.danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }

.list { list-style: none; margin: 0; padding: 0; }
.list > li { padding: 0.75rem 0; border-bottom: 1px solid var(--border); }
.list > li:last-child { border-bottom: 0; }

.progress { height: 8px; background: var(--surface-2); border-radius: 999px; overflow: hidden; }
.progress > span { display: block; height: 100%; background: var(--accent); border-radius: inherit; transition: width 0.4s; }

table.table { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
.table th, .table td { text-align: left; padding: 0.6rem 0.5rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.table th { color: var(--muted); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; }

.timeline { list-style: none; margin: 0; padding: 0 0 0 1.1rem; border-left: 2px solid var(--border); }
.timeline > li { position: relative; padding: 0 0 1rem 0.6rem; }
.timeline > li::before { content: ""; position: absolute; left: -1.53rem; top: 0.35rem; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); border: 2px solid var(--surface); }

/* ---------- Status, loading, toast ---------- */

.status-badge { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.78rem; font-weight: 600; padding: 0.25rem 0.6rem; border-radius: 999px; background: var(--surface-2); color: var(--muted); border: 1px solid var(--border); }
.status-badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--faint); }
.status-badge.live { color: var(--ok); background: var(--ok-soft); border-color: transparent; }
.status-badge.live::before { background: var(--ok); }
.status-badge.demo { color: var(--warn); background: var(--warn-soft); border-color: transparent; }
.status-badge.demo::before { background: var(--warn); }

.source-note { font-size: 0.8rem; color: var(--warn); margin-top: 0.5rem; }

.spinner { width: 1em; height: 1em; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: mind-spin 0.7s linear infinite; display: inline-block; }
@keyframes mind-spin { to { transform: rotate(360deg); } }

.thinking { display: flex; align-items: center; gap: 0.6rem; color: var(--muted); padding: 1rem 0; }
.skeleton { background: linear-gradient(90deg, var(--surface-2), var(--border), var(--surface-2)); background-size: 200% 100%; animation: mind-shimmer 1.4s infinite; border-radius: 6px; height: 0.9rem; margin: 0.5rem 0; }
@keyframes mind-shimmer { to { background-position: -200% 0; } }

.toast-host { position: fixed; bottom: 1rem; left: 50%; transform: translateX(-50%); z-index: 100; display: flex; flex-direction: column; gap: 0.5rem; align-items: center; pointer-events: none; }
.toast { background: var(--text); color: var(--bg); padding: 0.6rem 1rem; border-radius: 999px; font-size: 0.9rem; box-shadow: var(--shadow); animation: mind-pop 0.2s ease-out; }
@keyframes mind-pop { from { opacity: 0; transform: translateY(6px); } }

.fade-in { animation: mind-fade 0.35s ease-out; }
@keyframes mind-fade { from { opacity: 0; transform: translateY(4px); } }

/* ---------- Safety ---------- */

.safety { border-radius: var(--radius); padding: 1rem 1.1rem; border: 1px solid; margin-bottom: 1rem; }
.safety.urgent { background: var(--danger-soft); border-color: color-mix(in srgb, var(--danger) 45%, var(--border)); }
.safety.concern { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 45%, var(--border)); }
.safety h3 { margin-bottom: 0.4rem; }
.safety ul { margin: 0.5rem 0 0; padding-left: 1.1rem; }
.safety li { margin: 0.2rem 0; }

/* ---------- Footer ---------- */

.app-footer { border-top: 1px solid var(--border); color: var(--muted); font-size: 0.82rem; }
.app-footer .inner { max-width: 1120px; margin: 0 auto; padding: 1rem; display: flex; gap: 1rem; flex-wrap: wrap; justify-content: space-between; }

/* ---------- Modal ---------- */

dialog.modal { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); padding: 1.4rem; width: min(560px, calc(100vw - 2rem)); box-shadow: var(--shadow); }
dialog.modal::backdrop { background: rgb(0 0 0 / 0.35); }

/* ---------- Charts (rendered by Mind.chart) ---------- */

.mind-chart { width: 100%; height: auto; display: block; overflow: visible; }
.mind-chart text { fill: var(--muted); font-size: 11px; font-family: var(--font); }
.mind-chart .grid line, .mind-chart .ring { stroke: var(--border); stroke-width: 1; fill: none; }
.mind-chart .axis-label { fill: var(--text); font-size: 11.5px; font-weight: 550; }
.mind-chart .series { fill: none; stroke-width: 2.25; stroke-linejoin: round; stroke-linecap: round; }
.mind-chart .dot { stroke: var(--surface); stroke-width: 1.5; }
.mind-chart .area { opacity: 0.18; stroke: none; }
.mind-chart .bar { rx: 4; }
.mind-chart .s0 { stroke: var(--c1); fill: var(--c1); }
.mind-chart .s1 { stroke: var(--c2); fill: var(--c2); }
.mind-chart .s2 { stroke: var(--c3); fill: var(--c3); }
.mind-chart .s3 { stroke: var(--c4); fill: var(--c4); }
.mind-chart .s4 { stroke: var(--c5); fill: var(--c5); }
.mind-chart .s5 { stroke: var(--c6); fill: var(--c6); }
.mind-chart .series.s0, .mind-chart .series.s1, .mind-chart .series.s2, .mind-chart .series.s3, .mind-chart .series.s4, .mind-chart .series.s5 { fill: none; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; font-size: 0.82rem; color: var(--muted); margin-top: 0.5rem; }
.chart-legend span { display: inline-flex; align-items: center; gap: 0.35rem; }
.chart-legend i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.chart-tip { position: fixed; z-index: 90; pointer-events: none; background: var(--text); color: var(--bg); font-size: 0.8rem; padding: 0.35rem 0.55rem; border-radius: 6px; white-space: nowrap; }

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