/* ============================================================================
   MatterCheck design system — lightweight, CSP-safe, no framework.

   Load AFTER css/style.css. This file is the shared token + component layer for
   the interactive tools (compare tool, setup checker, SKU detail
   pages, forms, widget).

   Rules:
     * Tokens only in :root; components only reference tokens (no hardcoded hex).
     * No inline styles, no JS-generated styles, no @import of third-party fonts.
     * Every component is a class; every interactive control is a native
       <button>/<select>/<input>/<a> — no framework, no shadow DOM.
     * Stays within the site CSP: style-src 'self', no unsafe-inline.

   Token naming: base tokens live in style.css (:root). Tool tokens are prefixed
   --ds-* and default to the base tokens so this file works standalone too.
   ============================================================================ */

:root {
  /* ---- ds tokens (fall back to the base palette in style.css) ---- */
  --ds-bg: var(--bg, #0f1419);
  --ds-panel: var(--panel, #1a222c);
  --ds-panel-2: var(--panel-2, #222b36);
  --ds-border: var(--border, #2c3845);
  --ds-text: var(--text, #e7ecf1);
  --ds-muted: var(--muted, #93a1b0);
  --ds-accent: var(--accent, #5b9fd4);
  --ds-accent-dim: var(--accent-dim, rgba(91, 159, 212, 0.15));

  /* capability / confidence colors (match .chip in style.css) */
  --ds-y: var(--y, #3d9a6a);
  --ds-n: var(--n, #c45c5c);
  --ds-partial: var(--partial, #c9a227);
  --ds-unknown: var(--unknown, #6b7785);
  --ds-high: var(--high, #3d9a6a);
  --ds-med: var(--med, #c9a227);
  --ds-low: var(--low, #c45c5c);

  /* type scale + space (8px grid) */
  --ds-space-1: 0.25rem;
  --ds-space-2: 0.5rem;
  --ds-space-3: 0.75rem;
  --ds-space-4: 1rem;
  --ds-space-5: 1.5rem;
  --ds-radius: var(--radius, 10px);
  --ds-radius-sm: 6px;
  --ds-focus: 2px solid rgba(91, 159, 212, 0.45);

  /* type ramp */
  --ds-text-xs: 0.72rem;
  --ds-text-sm: 0.82rem;
  --ds-text-md: 0.92rem;
  --ds-text-lg: 1.05rem;

  /* motion */
  --ds-ease: 0.12s ease;
}

/* ============================================================================
   1. Selectors (form fields) — the "selector" component used by every tool.
   ============================================================================ */

.ds-field {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-1);
}

.ds-field > label,
.ds-label {
  font-size: var(--ds-text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ds-muted);
}

.ds-select,
.ds-input,
.ds-textarea {
  width: 100%;
  background: var(--ds-bg);
  color: var(--ds-text);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-sm);
  padding: 0.5rem 0.55rem;
  font: inherit;
  font-size: var(--ds-text-md);
  min-height: 44px; /* WCAG 2.5.5 tap target */
}

.ds-textarea {
  min-height: 7rem;
  resize: vertical;
  line-height: 1.5;
}

.ds-select:focus,
.ds-input:focus,
.ds-textarea:focus {
  outline: var(--ds-focus);
  outline-offset: 1px;
}

.ds-select[multiple] { min-height: auto; }

.ds-hint {
  font-size: var(--ds-text-xs);
  color: var(--ds-muted);
}

/* A row of selectors (the compare tool's platform pickers) */
.ds-selector-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: var(--ds-space-3);
  margin: var(--ds-space-4) 0;
}

/* ============================================================================
   2. Buttons
   ============================================================================ */

.ds-btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ds-space-2);
  font: inherit;
  font-weight: 700;
  border: 1px solid transparent;
  border-radius: var(--ds-radius-sm);
  padding: 0.55rem 1.1rem;
  min-height: 44px;
  cursor: pointer;
  transition: background var(--ds-ease), border-color var(--ds-ease), color var(--ds-ease);
}

.ds-btn--primary {
  background: var(--ds-accent);
  color: #0b1218;
}
.ds-btn--primary:hover { background: #7ab3e0; }
.ds-btn--primary:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }

.ds-btn--secondary {
  background: var(--ds-panel);
  color: var(--ds-text);
  border-color: var(--ds-border);
}
.ds-btn--secondary:hover { border-color: var(--ds-accent); }
.ds-btn--secondary:focus-visible { outline: var(--ds-focus); outline-offset: 1px; }

.ds-btn--ghost {
  background: transparent;
  color: var(--ds-accent);
}
.ds-btn--ghost:hover { text-decoration: underline; }

.ds-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================================================
   3. Confidence badges (the "confidence badge" component)
   ============================================================================ */

.ds-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: var(--ds-text-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.ds-badge::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: currentColor;
}

.ds-badge--high  { background: rgba(61, 154, 106, 0.18); color: #7dcea0; }
.ds-badge--med   { background: rgba(201, 162, 39, 0.18); color: #e0c86a; }
.ds-badge--low   { background: rgba(196, 92, 92, 0.18); color: #e09090; }
.ds-badge--unknown { background: rgba(107, 119, 133, 0.35); color: #b0bac4; }

/* Capability badge (Y/N/Partial/Unknown), mirrors .chip for the tools */
.ds-badge--y       { background: rgba(61, 154, 106, 0.28); color: #7dcea0; }
.ds-badge--n       { background: rgba(196, 92, 92, 0.28); color: #8dc5b0; }
.ds-badge--partial { background: rgba(201, 162, 39, 0.28); color: #e0c86a; }

.ds-badge--y::before,
.ds-badge--n::before,
.ds-badge--partial::before,
.ds-badge--unknown::before { content: ""; }

/* ============================================================================
   4. Result cards (the "result card" component)
   ============================================================================ */

.ds-card {
  background: var(--ds-panel);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius);
  padding: var(--ds-space-4);
  margin-bottom: var(--ds-space-3);
}

.ds-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--ds-space-2) var(--ds-space-4);
  margin-bottom: var(--ds-space-3);
}

.ds-card__title {
  margin: 0;
  font-size: var(--ds-text-lg);
  letter-spacing: -0.01em;
  flex: 1 1 12rem;
}

.ds-card__subtitle {
  color: var(--ds-muted);
  font-size: var(--ds-text-sm);
}

/* Result card highlighting a single verdict */
.ds-card--ok      { border-left: 3px solid var(--ds-high); }
.ds-card--partial { border-left: 3px solid var(--ds-partial); }
.ds-card--no      { border-left: 3px solid var(--ds-low); }
.ds-card--unknown { border-left: 3px solid var(--ds-unknown); }

/* Capability grid inside a result card (P/C/T/A) */
.ds-caps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--ds-space-2);
  margin: var(--ds-space-3) 0;
}

@media (max-width: 640px) {
  .ds-caps { grid-template-columns: repeat(2, 1fr); }
}

.ds-cap {
  background: var(--ds-bg);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-sm);
  padding: 0.55rem 0.45rem;
  text-align: center;
}

.ds-cap__label {
  display: block;
  color: var(--ds-muted);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.3rem;
}

.ds-cap--highlight {
  border-color: var(--ds-accent);
  box-shadow: 0 0 0 1px rgba(91, 159, 212, 0.25);
}

.ds-sources {
  font-size: var(--ds-text-sm);
  margin-top: var(--ds-space-3);
  padding-top: var(--ds-space-3);
  border-top: 1px solid var(--ds-border);
}

.ds-sources ul { margin: 0.35rem 0 0; padding-left: 1.1rem; }
.ds-sources a { word-break: break-all; }

/* ============================================================================
   5. Compare tool layout
   ============================================================================ */

.ds-compare {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: var(--ds-space-3);
  margin: var(--ds-space-4) 0;
}

.ds-compare__col { min-width: 0; }

/* ============================================================================
   6. Empty / error / note states
   ============================================================================ */

.ds-empty {
  border: 1px dashed var(--ds-border);
  border-radius: var(--ds-radius);
  padding: var(--ds-space-5);
  text-align: center;
  color: var(--ds-muted);
  font-size: var(--ds-text-md);
}

.ds-note {
  background: var(--ds-panel);
  border: 1px solid var(--ds-border);
  border-left: 3px solid var(--ds-accent);
  border-radius: var(--ds-radius-sm);
  padding: var(--ds-space-3);
  color: var(--ds-muted);
  font-size: var(--ds-text-sm);
}

.ds-note strong { color: var(--ds-text); }

.ds-error {
  background: rgba(196, 92, 92, 0.12);
  border: 1px solid rgba(196, 92, 92, 0.45);
  border-radius: var(--ds-radius-sm);
  padding: var(--ds-space-3);
  color: #e8a8a8;
  font-size: var(--ds-text-md);
}

/* ============================================================================
   7. Forms (corrections + test-report)
   ============================================================================ */

.ds-form {
  display: grid;
  gap: var(--ds-space-4);
  max-width: 44rem;
}

.ds-form--wide { max-width: 60rem; }

.ds-form__row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: var(--ds-space-3);
}

.ds-radio-group,
.ds-checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ds-space-2);
}

.ds-radio,
.ds-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--ds-text-md);
  color: var(--ds-text);
  cursor: pointer;
  min-height: 32px;
}

.ds-radio input,
.ds-checkbox input {
  width: 1.05rem;
  height: 1.05rem;
  accent-color: var(--ds-accent);
}

.ds-form__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ds-space-3);
  align-items: center;
}

.ds-form__status {
  font-size: var(--ds-text-sm);
  color: var(--ds-muted);
}

.ds-form__status.is-ok { color: #7dcea0; }
.ds-form__status.is-err { color: #e8a8a8; }

/* Honeypot field (spam protection): visually hidden, never focusable */
.ds-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ============================================================================
   8. Moderation queue
   ============================================================================ */

.ds-mod-list {
  display: grid;
  gap: var(--ds-space-3);
  margin-top: var(--ds-space-4);
  max-width: 60rem;
}

.ds-mod-item {
  background: var(--ds-panel);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius);
  padding: var(--ds-space-4);
}

.ds-mod-item__meta {
  font-size: var(--ds-text-xs);
  color: var(--ds-muted);
  margin-bottom: var(--ds-space-2);
}

.ds-mod-item__body {
  font-size: var(--ds-text-md);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.ds-mod-item__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ds-space-2);
  margin-top: var(--ds-space-3);
}

.ds-mod-item.is-approved { border-left: 3px solid var(--ds-high); }
.ds-mod-item.is-rejected { border-left: 3px solid var(--ds-low); opacity: 0.7; }

/* ============================================================================
   9. Reduced motion
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
  .ds-btn, .ds-select, .ds-input, .ds-textarea { transition: none; }
}

/* Saved setups: the localStorage list on the setup checker. */
.ds-saved { margin: 1.5rem 0 0; padding-top: 1rem; border-top: 1px solid var(--ds-border); }
.ds-saved__title { font-size: 1rem; margin: 0 0 0.35rem; }
.ds-saved__row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.ds-saved__row .ds-input { flex: 1 1 14rem; }
.ds-saved__list { list-style: none; margin: 0.75rem 0 0; padding: 0; display: grid; gap: 0.5rem; }
.ds-saved__item { display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 0.75rem; padding: 0.55rem 0.7rem;
  border: 1px solid var(--ds-border); border-radius: var(--ds-radius-sm); background: var(--ds-panel-2); }
.ds-saved__name { font-weight: 600; }
.ds-saved__actions { margin-left: auto; display: inline-flex; gap: 0.4rem; }
.ds-saved__empty { color: var(--ds-muted); font-size: var(--ds-text-sm); }