/* ── Reset & base ──────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/*
 * ── Design tokens ─────────────────────────────────────────────
 *
 *  Colors
 *  bg:                 #040714
 *  surface-1 (cards):  rgba(255,255,255,.03)
 *  surface-2 (hover):  rgba(255,255,255,.06)
 *  border-subtle:      rgba(255,255,255,.07)
 *  border:             rgba(255,255,255,.1)
 *  border-strong:      rgba(255,255,255,.22)
 *  blue accent:        #0063e5
 *  blue accent bright: #0080ff
 *  text primary:       #f9f9f9
 *  text secondary:     #cacaca
 *  text muted:         rgba(255,255,255,.55)
 *  header gradient:    in oklch 135deg, #B015B0 0%, #3D0080 50%, #040714 100%
 *
 *  Typography scale (rem)
 *  --text-xs: 0.75    --text-sm: 0.875   --text-base: 1
 *  --text-lg: 1.125   --text-xl: 1.25    --text-2xl: 1.5
 *  font stack: 'Avenir Next', -apple-system, BlinkMacSystemFont,
 *              'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif
 *
 *  Spacing scale (4px grid)
 *  --space-1: 4px   --space-2: 8px   --space-3: 12px   --space-4: 16px
 *  --space-6: 24px  --space-8: 32px
 *
 *  Radii
 *  --radius-sm: 6px   --radius: 10px   --radius-lg: 15px
 *
 *  Easing
 *  --ease-snap: cubic-bezier(0.34, 1.56, 0.64, 1)  (spring/overshoot)
 *  --dur-fast: 120ms   --dur: 200ms
 *
 *  UI primitives
 *  --control-height: 44px   (touch minimum)
 *  --control-height-sm: 36px
 *  --z-sticky-header: 200   --z-modal: 400   --z-toast: 500
 */

:root {
  --bg: #040714;
  --surface-1: rgba(255,255,255,.03);
  --surface-2: rgba(255,255,255,.06);
  --surface-toast: #1a1730;
  --border-subtle: rgba(255,255,255,.07);
  --border: rgba(255,255,255,.1);
  --border-strong: rgba(255,255,255,.22);
  --text-primary: #f9f9f9;
  --text-secondary: #cacaca;
  --text-muted: rgba(255,255,255,.55);
  --accent: #0063e5;
  --accent-bright: #0080ff;
  --danger: #e11d48;
  --danger-hover: #f43f5e;
  --font: 'Avenir Next', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --text-xs: 0.75rem; --text-sm: 0.875rem; --text-base: 1rem;
  --text-lg: 1.125rem; --text-xl: 1.25rem; --text-2xl: 1.5rem;
  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px;
  --space-6: 24px; --space-8: 32px;
  --radius-sm: 6px; --radius: 10px; --radius-lg: 15px;
  --ease-snap: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast: 120ms; --dur: 200ms;
  --control-height: 44px;
  --control-height-sm: 36px;
  --shadow-card: 0 12px 28px rgba(15, 23, 42, 0.5);
  --shadow-modal: 0 24px 48px rgba(2, 6, 23, 0.58);
  --z-sticky-header: 200;
  --z-modal: 400;
  --z-toast: 500;
}

html { height: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  min-height: 100%;
  color: var(--text-primary);
  display: flex; flex-direction: column;
}

body.modal-open {
  overflow: hidden;
}

main#main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  width: 100%;
}

/* ── Layout ────────────────────────────────────────────────── */
/*
 * GOTCHA: body { display:flex; flex-direction:column } + margin: 0 auto
 * on a child collapses its width — always pair with width: 100%.
 *
 * GOTCHA: External images (YouTube ggpht, Gravatar, etc.) may block loading
 * when the Referer header points to localhost or an unknown origin. Fix:
 * 1. Add <meta name="referrer" content="no-referrer"> in <head> (global)
 * 2. Or add referrerpolicy="no-referrer" on each <img> tag
 */
.container {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-6);
  flex: 1;
}

/* Vertical rhythm: use inside .container or nested regions */
.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.stack--tight { gap: var(--space-4); }
.stack--loose { gap: var(--space-8); }

/* Page section: title row + body (replaces “card everything” for grouping) */
.section {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.section__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
}
.section__titles {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}
.section__title {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}
.section__lead {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.45;
  max-width: 52ch;
}
.section__lead code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
  color: var(--text-secondary);
}
.stack > .card { margin-bottom: 0; }
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

/* Header layout is owned by the Neorgon Header Kit (css/neorgon-header.css) */
nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ── Buttons (canonical) ─────────────────────────────────────
 * Use .btn + a variant. Aliases: .nav-link = toolbar ghost; .auth-* map below.
 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--control-height);
  padding: 0 var(--space-4);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-primary);
  transition:
    background-color var(--dur),
    color var(--dur),
    border-color var(--dur),
    box-shadow var(--dur),
    transform var(--dur-fast);
  -webkit-tap-highlight-color: transparent;
}
.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}
.btn--sm {
  min-height: var(--control-height-sm);
  padding: 0 var(--space-3);
  font-size: var(--text-xs);
}
.btn--block { width: 100%; }
.btn--icon {
  min-width: var(--control-height);
  padding: 0;
}
.btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}
.btn--primary:hover { background: var(--accent-bright); }
.btn--secondary {
  background: var(--surface-2);
  color: var(--text-primary);
  border-color: var(--border-strong);
}
.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}
.btn--ghost {
  background: transparent;
  color: rgba(255,255,255,0.92);
  border-color: rgba(255,255,255,0.18);
}
.btn--ghost:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}
.btn--danger {
  background: var(--danger);
  color: #fff;
  border-color: transparent;
}
.btn--danger:hover { background: var(--danger-hover); }

/* Toolbar ghost (header nav) — same as .btn.btn--ghost.btn--sm */
.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--control-height);
  padding: 0 var(--space-3);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius-sm);
  background: transparent;
  color: rgba(255,255,255,0.92);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  transition: background-color var(--dur), color var(--dur), border-color var(--dur);
}
.nav-link:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}

.auth-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: var(--control-height);
  min-height: var(--control-height);
  padding: 0;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius-sm);
  background: transparent;
  color: rgba(255,255,255,0.92);
  cursor: pointer;
  font-family: inherit;
  transition: background-color var(--dur), color var(--dur), border-color var(--dur);
}
.auth-toggle:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}
.auth-toggle svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  display: block;
}
.auth-toggle.logged-in { color: var(--accent); }
.auth-toggle.logged-in svg circle:nth-of-type(2) {
  fill: currentColor;
  stroke: none;
}

/* ── Sheet (inline panel under header) — not a modal ─────────
 * Use for auth, filters, compact forms. No backdrop; page scrolls.
 * For blocking overlays use .modal below.
 */
.auth-panel {
  background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--border-subtle);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}
.auth-panel.open { max-height: 300px; }
.auth-panel-inner {
  padding: var(--space-6);
  max-width: 400px;
  margin: 0 auto;
}
.auth-tabs {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.auth-tab {
  flex: 1;
  min-height: var(--control-height-sm);
  padding: 0 var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  transition: background-color var(--dur), color var(--dur), border-color var(--dur);
}
.auth-tab.active {
  background: var(--surface-2);
  color: var(--text-primary);
  border-color: var(--border-strong);
}
.auth-form input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-1);
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-family: inherit;
}
.auth-submit {
  width: 100%;
  min-height: var(--control-height);
  padding: 0 var(--space-4);
  border: none;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font-family: inherit;
  font-weight: 600;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background-color var(--dur);
}
.auth-submit:hover { background: var(--accent-bright); }
#authUser {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.auth-username {
  color: var(--text-primary);
  font-weight: 600;
}
.auth-logout {
  min-height: var(--control-height-sm);
  padding: 0 var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  transition: background-color var(--dur), color var(--dur), border-color var(--dur);
}
.auth-logout:hover {
  background: var(--surface-2);
  color: var(--text-primary);
}
.auth-divider {
  height: 1px;
  background: var(--border-subtle);
}

/* ── Modal (blocking overlay) ──────────────────────────────── */
.modal[hidden] {
  display: none !important;
}
.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 4, 12, 0.72);
  backdrop-filter: blur(4px);
}
.modal__dialog {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  width: min(100%, 440px);
  max-height: min(88vh, 560px);
  overflow: hidden;
  background: var(--surface-1);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
}
.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
}
.modal__header h2 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
}
.modal__body {
  padding: var(--space-6);
  overflow: auto;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.55;
}
.modal__body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.9em;
  color: var(--text-primary);
}
.modal__footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-subtle);
}

/* ── Card ──────────────────────────────────────────────────── */
/*
 * GOTCHA: backdrop-filter creates a stacking context — dropdowns inside
 * a card can be clipped by a later card's stacking context. Fix by adding
 * position: relative; z-index: 10 to the card that owns the open dropdown.
 *
 * Default: static surface (no hover lift — avoids generic “dashboard demo”).
 * Use .card--interactive for raised hover + entrance motion.
 *
 * GOTCHA: a <button> or <a> used AS a card does not inherit body text color —
 * buttons default to canvas text (near-black), rendering invisible on the dark
 * bg. When a card is an interactive element, set color: var(--text-primary)
 * and font-family: var(--font) explicitly on it.
 */
.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  backdrop-filter: blur(10px);
  transition: border-color var(--dur), box-shadow var(--dur);
}
.card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.45);
}
.card--interactive {
  transition:
    transform var(--dur) ease-out,
    box-shadow var(--dur) ease-out,
    border-color var(--dur);
  animation: fadeIn 0.35s ease-out both;
}
.card--interactive:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
  border-color: var(--border-strong);
}
.card--enter {
  animation: fadeIn 0.35s ease-out both;
}
.card--flat:hover {
  box-shadow: none;
}

/* ── Button press feedback ─────────────────────────────────── */
button:active,
.btn:active,
.nav-link:active,
.auth-toggle:active,
.auth-tab:active,
.auth-submit:active,
.auth-logout:active {
  transform: scale(0.98);
  transition-duration: var(--dur-fast);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Skeleton loading ──────────────────────────────────────── */
@keyframes shimmer { to { background-position: -200% 0; } }
.skeleton {
  background: linear-gradient(90deg, var(--surface-1) 25%, var(--surface-2) 50%, var(--surface-1) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius);
}

/* ── Toast ─────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  max-width: min(360px, calc(100vw - var(--space-8)));
  background: var(--surface-toast);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-primary);
  box-shadow: var(--shadow-card);
  pointer-events: none;
  transform: translateY(8px);
  opacity: 0;
  transition: opacity 0.2s ease-out, transform 0.2s ease-out;
}
.toast.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Footer ────────────────────────────────────────────────── */
.info-footer {
  text-align: center;
  padding: var(--space-6) var(--space-6) 28px;
  color: var(--text-muted);
  font-size: .78em;
  line-height: 1.8;
  border-top: 1px solid var(--border-subtle);
  margin-top: var(--space-8);
}
.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--dur);
}
.footer-link:hover,
.footer-link:focus-visible {
  color: var(--text-secondary);
  text-decoration: underline;
}

/* ── Focus styles ──────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 2px;
}

/* ── Skip link ─────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 1000;
  padding: var(--space-2) var(--space-4);
  background: var(--accent-bright);
  color: #000;
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  text-decoration: none;
  transition: top var(--dur);
}
.skip-link:focus { top: 0; }

/* ── Reduced motion ────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .card--interactive:hover { transform: none; }
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 600px) {
  .container { padding: var(--space-4); }
  .toast {
    left: var(--space-4);
    right: var(--space-4);
    max-width: none;
  }
}

/* ════════════════════════════════════════════════════════════
   LogScope — app-specific styles
   ════════════════════════════════════════════════════════════ */

.container--wide { max-width: 1160px; }

/* ── Readable widths ──────────────────────────────────────────
 * The wide container is great for charts and tables, but prose and
 * card blocks get uncomfortably long and hug the left edge on big
 * screens. Cap the text-heavy views to a centered reading column;
 * leave Charts and Baselines full-width where the space is needed.
 */
.view[data-view="upload"] > .stack { max-width: 860px; }
.view[data-view="overview"] > .stack { max-width: 1000px; }
.view[data-view="tutorials"] > .section,
.view[data-view="translate"] > .section { max-width: 900px; }
.view[data-view="upload"] > .stack,
.view[data-view="overview"] > .stack,
.view[data-view="tutorials"] > .section,
.view[data-view="translate"] > .section {
  width: 100%;
  margin-inline: auto;
}
/* Let lead copy fill the narrower column instead of a thin left ribbon. */
.view[data-view="upload"] .section__lead,
.view[data-view="overview"] .section__lead { max-width: 64ch; }

/* ── Tabs (view switcher) ──────────────────────────────────── */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: var(--space-3);
}
.tab {
  min-height: var(--control-height-sm);
  padding: 0 var(--space-4);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  transition: background-color var(--dur), color var(--dur), border-color var(--dur);
}
.tab:hover { color: var(--text-secondary); background: var(--surface-1); }
.tab.active {
  color: var(--text-primary);
  background: var(--surface-2);
  border-color: var(--border-strong);
}
.tab:disabled {
  opacity: 0.38;
  cursor: not-allowed;
  border: 1px dashed var(--border);
  background: transparent;
}
.tab:disabled:hover { color: var(--text-muted); background: transparent; }
.tab[hidden] { display: none; }

.view[hidden] { display: none; }

/* ── Dropzone ──────────────────────────────────────────────── */
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  text-align: center;
  padding: var(--space-8);
  min-height: 260px;
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--surface-1);
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color var(--dur), background var(--dur), transform var(--dur-fast);
}
.dropzone:hover { border-color: var(--accent-bright); background: var(--surface-2); }
.dropzone.dragover {
  border-color: var(--accent-bright);
  background: rgba(0, 128, 255, 0.08);
  transform: scale(1.005);
}
.dropzone__icon {
  width: 54px; height: 54px;
  color: var(--accent-bright);
  opacity: 0.9;
}
.dropzone__title { font-size: var(--text-lg); font-weight: 600; color: var(--text-primary); }
.dropzone__hint { font-size: var(--text-sm); color: var(--text-muted); max-width: 46ch; }

/* ── Stat grid ─────────────────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-3);
}
.stat {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.stat__label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.stat__value {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.stat__value .unit { font-size: var(--text-sm); font-weight: 600; color: var(--text-muted); margin-left: 3px; }
.stat__sub { font-size: var(--text-xs); color: var(--text-secondary); }
.stat--ok { border-color: rgba(34, 197, 94, 0.4); }
.stat--warn { border-color: rgba(245, 158, 11, 0.45); }
.stat--bad { border-color: rgba(225, 29, 72, 0.55); }
.stat--ok .stat__value { color: #4ade80; }
.stat--warn .stat__value { color: #fbbf24; }
.stat--bad .stat__value { color: #fb7185; }

/* ── Insight cards ─────────────────────────────────────────── */
.insight {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-left-width: 4px;
  border-radius: var(--radius);
  background: var(--surface-1);
}
.insight + .insight { margin-top: var(--space-3); }
.insight__icon {
  flex-shrink: 0;
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  font-size: 1.05rem;
}
.insight__body { min-width: 0; }
.insight__title { font-weight: 600; color: var(--text-primary); font-size: var(--text-base); }
.insight__desc { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.5; margin-top: 3px; }
.insight__desc strong { color: var(--text-primary); }
.insight--critical { border-left-color: var(--danger); }
.insight--critical .insight__icon { background: rgba(225, 29, 72, 0.16); color: #fb7185; }
.insight--warn { border-left-color: #f59e0b; }
.insight--warn .insight__icon { background: rgba(245, 158, 11, 0.16); color: #fbbf24; }
.insight--ok { border-left-color: #22c55e; }
.insight--ok .insight__icon { background: rgba(34, 197, 94, 0.16); color: #4ade80; }
.insight--info { border-left-color: var(--accent-bright); }
.insight--info .insight__icon { background: rgba(0, 128, 255, 0.16); color: var(--accent-bright); }

/* ── Chart ─────────────────────────────────────────────────── */
.chart-wrap {
  position: relative;
  width: 100%;
}
.chart-canvas {
  width: 100%;
  height: 420px;
  display: block;
  border-radius: var(--radius-sm);
  touch-action: none;
}
@media (max-width: 720px) { .chart-canvas { height: 300px; } }
.chart-tooltip {
  position: absolute;
  pointer-events: none;
  z-index: 5;
  background: var(--surface-toast);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  color: var(--text-primary);
  line-height: 1.5;
  box-shadow: var(--shadow-card);
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--dur-fast);
}
.chart-tooltip.visible { opacity: 1; }
.chart-tooltip .tt-time { color: var(--text-muted); margin-bottom: 2px; }
.chart-tooltip .tt-row { display: flex; align-items: center; gap: 6px; }
.chart-tooltip .tt-dot { width: 9px; height: 9px; border-radius: 2px; flex-shrink: 0; }

/* ── Metric chips (series toggles) ─────────────────────────── */
.chips { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: var(--control-height-sm);
  padding: 0 var(--space-3);
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-1);
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--text-xs);
  font-weight: 600;
  transition: background var(--dur), color var(--dur), border-color var(--dur);
}
.chip:hover { color: var(--text-secondary); border-color: var(--border-strong); }
.chip.active { color: var(--text-primary); background: var(--surface-2); border-color: var(--border-strong); }
.chip__dot { width: 10px; height: 10px; border-radius: 3px; flex-shrink: 0; opacity: 0.35; }
.chip.active .chip__dot { opacity: 1; }

/* Hover/focus tooltip: a short "what is this sensor?" note. */
.chip[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  width: max-content;
  max-width: 260px;
  white-space: normal;
  text-align: left;
  background: var(--surface-toast);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  line-height: 1.4;
  color: var(--text-secondary);
  box-shadow: var(--shadow-card);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast), transform var(--dur-fast);
  z-index: 20;
}
.chip[data-tip]:hover::after,
.chip[data-tip]:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Data table ────────────────────────────────────────────── */
.table-scroll { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
table.data th, table.data td {
  padding: var(--space-2) var(--space-3);
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}
table.data th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--surface-1);
  position: sticky;
  top: 0;
}
table.data td { color: var(--text-secondary); font-variant-numeric: tabular-nums; }
table.data tr:hover td, table.data tbody tr:hover td { background: var(--surface-1); }
table.data td.metric-name { color: var(--text-primary); font-weight: 600; white-space: normal; min-width: 200px; }
table.data td.wrap { white-space: normal; }

.zone-pill {
  display: inline-block;
  padding: 1px 9px;
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 700;
}
.zone-idle { background: rgba(148,163,184,0.18); color: #cbd5e1; }
.zone-low { background: rgba(34,197,94,0.16); color: #4ade80; }
.zone-medium { background: rgba(245,158,11,0.16); color: #fbbf24; }
.zone-high { background: rgba(225,29,72,0.16); color: #fb7185; }

/* ── Search input ──────────────────────────────────────────── */
.search-input {
  width: 100%;
  min-height: var(--control-height);
  padding: 0 var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-1);
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-family: inherit;
}
.search-input::placeholder { color: var(--text-muted); }

/* ── Select ────────────────────────────────────────────────── */
.select {
  min-height: var(--control-height-sm);
  padding: 0 var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-1);
  color: var(--text-primary);
  font-family: inherit;
  font-size: var(--text-sm);
  cursor: pointer;
}

/* ── Accordion (tutorials) ─────────────────────────────────── */
.accordion { display: flex; flex-direction: column; gap: var(--space-3); }
.acc-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-1);
  overflow: hidden;
}
.acc-head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4);
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: inherit;
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}
.acc-head:hover { background: var(--surface-2); }
.acc-head .acc-chevron { transition: transform var(--dur); flex-shrink: 0; color: var(--text-muted); }
.acc-item.open .acc-chevron { transform: rotate(90deg); }
.acc-tag {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 1px 8px;
  margin-left: auto;
  margin-right: var(--space-2);
}
.acc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--dur) ease-out;
}
.acc-item.open .acc-body { max-height: 1200px; }
.acc-body-inner {
  padding: 0 var(--space-4) var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}
.acc-body-inner h4 {
  color: var(--text-primary);
  font-size: var(--text-sm);
  margin: var(--space-3) 0 var(--space-1);
}
.acc-body-inner ul { margin: 0 0 var(--space-2) var(--space-4); }
.acc-body-inner li { margin-bottom: 4px; }
.acc-body-inner code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9em;
  color: var(--text-primary);
  background: var(--surface-2);
  padding: 1px 5px;
  border-radius: 4px;
}
.acc-body-inner .look-for {
  border-left: 3px solid var(--accent-bright);
  padding-left: var(--space-3);
  margin-top: var(--space-3);
}

/* ── Empty state ───────────────────────────────────────────── */
.empty {
  text-align: center;
  color: var(--text-muted);
  font-size: var(--text-sm);
  padding: var(--space-8) var(--space-4);
}

/* ── Legend / meta ─────────────────────────────────────────── */
.file-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-4);
}
.file-meta .dot { color: var(--text-muted); }
.file-meta[hidden], #resetBtn[hidden] { display: none; }
.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 700;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.badge--gpu { border-color: rgba(0,128,255,.5); color: var(--accent-bright); }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}
@media (max-width: 720px) { .two-col { grid-template-columns: 1fr; } }

.muted { color: var(--text-muted); }
.nowrap { white-space: nowrap; }

/* ── Verdict chip (file bar) ───────────────────────────────── */
.verdict {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
}
.verdict__dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.verdict--critical { background: rgba(225,29,72,0.16); color: #fb7185; border: 1px solid rgba(225,29,72,0.45); }
.verdict--critical .verdict__dot { background: #fb7185; box-shadow: 0 0 8px rgba(251,113,133,0.9); }
.verdict--warn { background: rgba(245,158,11,0.14); color: #fbbf24; border: 1px solid rgba(245,158,11,0.4); }
.verdict--warn .verdict__dot { background: #fbbf24; }
.verdict--ok { background: rgba(34,197,94,0.13); color: #4ade80; border: 1px solid rgba(34,197,94,0.38); }
.verdict--ok .verdict__dot { background: #4ade80; }

/* ── Severity summary (overview) ───────────────────────────── */
.sev-summary { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.sev {
  display: inline-flex;
  align-items: center;
  padding: 2px 11px;
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 700;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.sev--critical { border-color: rgba(225,29,72,0.5); color: #fb7185; background: rgba(225,29,72,0.1); }
.sev--warn { border-color: rgba(245,158,11,0.45); color: #fbbf24; background: rgba(245,158,11,0.09); }
.sev--ok { border-color: rgba(34,197,94,0.4); color: #4ade80; background: rgba(34,197,94,0.08); }
.sev--info { border-color: rgba(0,128,255,0.45); color: var(--accent-bright); background: rgba(0,128,255,0.08); }

/* ── How-it-works steps (upload) ───────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-3);
}
.step {
  position: relative;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  padding-top: calc(var(--space-4) + 10px);
}
.step__num {
  position: absolute;
  top: -10px;
  left: var(--space-4);
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, #B015B0, #3D0080);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 700;
}
.step__title { font-size: var(--text-base); font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.step__text { font-size: var(--text-sm); color: var(--text-muted); line-height: 1.5; }

/* ── Chart zone legend ─────────────────────────────────────── */
.zone-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-4);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-subtle);
  font-size: var(--text-xs);
  color: var(--text-muted);
}
.zone-legend__label { font-weight: 600; color: var(--text-secondary); }
.zone-legend__item { display: inline-flex; align-items: center; gap: 6px; }
.zl-swatch { width: 12px; height: 12px; border-radius: 3px; display: inline-block; border: 1px solid var(--border); }
.zl-idle { background: rgba(148,163,184,0.25); }
.zl-low { background: rgba(34,197,94,0.25); }
.zl-medium { background: rgba(245,158,11,0.28); }
.zl-high { background: rgba(225,29,72,0.28); }
.zone-legend__sep { width: 1px; height: 14px; background: var(--border); }
.zl-hang {
  width: 14px; height: 0;
  border-top: 2px dashed rgba(251,113,133,0.9);
  display: inline-block;
}

/* ── Zone proportion bars (baselines) ──────────────────────── */
.zone-bar {
  height: 6px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
  margin: 4px 0;
}
.zone-bar__fill { display: block; height: 100%; border-radius: 999px; }
.zone-bar__fill.zone-idle { background: #94a3b8; }
.zone-bar__fill.zone-low { background: #22c55e; }
.zone-bar__fill.zone-medium { background: #f59e0b; }
.zone-bar__fill.zone-high { background: #e11d48; }

/* ── Validate: phases & tool cards ─────────────────────────── */
.view[data-view="validate"] > .stack { max-width: 1080px; width: 100%; margin-inline: auto; }

.phase { display: flex; flex-direction: column; gap: var(--space-4); }
.phase__head { display: flex; align-items: flex-start; gap: var(--space-4); }
.phase__num {
  flex-shrink: 0;
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, #B015B0, #3D0080);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  font-size: var(--text-base);
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(176,21,176,0.35);
}
.phase__titles { min-width: 0; padding-top: 2px; }
.phase__title { font-size: var(--text-lg); font-weight: 600; color: var(--text-primary); }
.phase__intro { font-size: var(--text-sm); color: var(--text-muted); margin-top: 2px; max-width: 64ch; }

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-3);
}
.tool-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  transition: border-color var(--dur), box-shadow var(--dur);
}
.tool-card:hover { border-color: var(--border-strong); box-shadow: 0 8px 20px rgba(15,23,42,0.45); }
.tool-card__head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.tool-card__name { font-size: var(--text-base); color: var(--text-primary); }
.tool-cost {
  flex-shrink: 0;
  font-size: var(--text-xs);
  font-weight: 700;
  padding: 1px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.tool-cost--free { border-color: rgba(34,197,94,0.45); color: #4ade80; }
.tool-cost--paid { border-color: rgba(245,158,11,0.45); color: #fbbf24; }
.tool-cost--builtin { border-color: rgba(0,128,255,0.45); color: var(--accent-bright); }
.tool-card__what { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.5; }
.tool-card__what code, .tool-card__steps code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9em;
  color: var(--text-primary);
  background: var(--surface-2);
  padding: 1px 5px;
  border-radius: 4px;
}
.tool-card__steps {
  margin: 0 0 0 var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}
.tool-card__steps li { margin-bottom: 4px; }
.tool-card__proves {
  margin-top: auto;
  border-left: 3px solid var(--accent-bright);
  padding-left: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.5;
}
.tool-card__proves strong { color: var(--text-primary); }
.tool-card__foot { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); }
.tool-card__ref { font-size: var(--text-xs); color: var(--text-muted); }

/* ── Copyable command chips ────────────────────────────────── */
.cmd-list { display: flex; flex-direction: column; gap: var(--space-2); }
.cmd-chip {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  min-height: var(--control-height-sm);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(0,0,0,0.25);
  color: var(--text-primary);
  font-family: inherit;
  font-size: var(--text-xs);
  cursor: pointer;
  text-align: left;
  transition: border-color var(--dur), background var(--dur);
}
.cmd-chip:hover { border-color: var(--accent-bright); background: rgba(0,128,255,0.08); }
.cmd-chip.copied { border-color: rgba(34,197,94,0.6); }
.cmd-chip code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.95em;
  color: var(--text-primary);
  white-space: nowrap;
}
.cmd-chip svg { flex-shrink: 0; color: var(--text-muted); }
.cmd-chip:hover svg { color: var(--accent-bright); }
.cmd-chip__note { color: var(--text-muted); margin-left: auto; text-align: right; }

/* ── Xid table ─────────────────────────────────────────────── */
.xid-points {
  display: inline-block;
  padding: 1px 9px;
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 700;
  border: 1px solid var(--border);
  white-space: nowrap;
}
.xid-points--software { border-color: rgba(0,128,255,0.45); color: var(--accent-bright); background: rgba(0,128,255,0.08); }
.xid-points--hardware { border-color: rgba(225,29,72,0.5); color: #fb7185; background: rgba(225,29,72,0.1); }
.xid-points--power { border-color: rgba(245,158,11,0.45); color: #fbbf24; background: rgba(245,158,11,0.09); }

@media (max-width: 600px) {
  .cmd-chip { flex-wrap: wrap; }
  .cmd-chip__note { margin-left: 0; width: 100%; text-align: left; }
}

