/* Hardware-Tester.com - GPU Tester
   Loaded AFTER /css/styles.css and /css/keyboard-tester.css (shared breadcrumb,
   .kt panel, .kt-card, .kt-stat, .kt-dl, .kt-alert, FAQ and section styles). */

.gpu {
  --gpu-ok: #34d399;
  --gpu-warn: #fbbf24;
  --gpu-bad: #f87171;
  --gpu-info: #60a5fa;
}

.gpu-block {
  margin-top: 1.4rem;
}

.gpu-block > h2 {
  margin: 0 0 0.6rem;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
}

.gpu-lead {
  margin: 0 0 0.8rem;
  max-width: 48rem;
  color: var(--text-muted);
}

.gpu-small {
  margin: 0.5rem 0 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Scope cards: what the tool can and cannot know ---------------------- */
.gpu-scope {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.gpu-scope li {
  padding: 0.9rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-top: 3px solid var(--gpu-info);
  border-radius: var(--radius);
}

.gpu-scope li:nth-child(2) { border-top-color: var(--gpu-ok); }
.gpu-scope li:nth-child(3) { border-top-color: var(--accent); }
.gpu-scope li:nth-child(4) { border-top-color: var(--gpu-warn); }

.gpu-scope strong {
  display: block;
  margin-bottom: 0.25rem;
}

.gpu-scope span {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Tooltips ------------------------------------------------------------- */
.gpu-tip {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.1rem;
  height: 1.1rem;
  margin-left: 0.3rem;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
  color: var(--text-muted);
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  cursor: help;
  vertical-align: middle;
}

.gpu-tip::after {
  content: attr(data-tip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 0.5rem);
  z-index: 20;
  display: none;                      /* takes no space (and causes no page overflow) until shown */
  width: min(16rem, calc(100vw - 1rem));
  padding: 0.5rem 0.7rem;
  font-size: 0.82rem;
  font-weight: 400;
  line-height: 1.4;
  text-align: left;
  color: var(--text);
  background: #0b1118;
  border: 1px solid var(--border-strong);
  border-radius: 0.6rem;
  box-shadow: var(--shadow);
  transform: translateX(calc(-50% + var(--tip-shift, 0px)));
  pointer-events: none;
}

.gpu-tip:hover::after,
.gpu-tip:focus::after {
  display: block;
}

/* Badges + API cards ------------------------------------------------------ */
.gpu-badge {
  display: inline-block;
  padding: 0.15rem 0.7rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
}

.gpu-badge[data-state="supported"] { color: var(--gpu-ok); border-color: var(--gpu-ok); }
.gpu-badge[data-state="failed"] { color: var(--gpu-bad); border-color: var(--gpu-bad); }
.gpu-badge[data-state="unsupported"],
.gpu-badge[data-state="unavailable"] { color: var(--gpu-warn); border-color: var(--gpu-warn); }
.gpu-badge[data-state="notrun"] { color: var(--gpu-info); border-color: var(--gpu-info); }

.gpu-apis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 0.9rem;
}

.gpu-api h3 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin: 0 0 0.5rem;
}

.gpu-api p {
  margin: 0.4rem 0 0;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.gpu-api p[data-detail] {
  color: var(--text);
}

.gpu-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.9rem;
}

/* Info lists --------------------------------------------------------------- */
.gpu-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
  gap: 0.9rem;
}

.gpu .kt-dl {
  grid-template-columns: minmax(9rem, max-content) minmax(0, 1fr);
}

/* Info cards are narrow and values can be long (renderer strings), so stack label above value. */
.gpu-info-grid .kt-dl {
  grid-template-columns: minmax(0, 1fr);
  gap: 0.05rem;
}

.gpu-info-grid .kt-dl dt {
  margin-top: 0.55rem;
  font-size: 0.8rem;
}

.gpu-info-grid .kt-dl dd {
  overflow-wrap: anywhere;
}

.gpu .kt-dl dd.is-na {
  color: var(--text-muted);
  font-style: italic;
}

.gpu-alerts {
  display: grid;
  gap: 0.5rem;
  margin: 0 0 0.9rem;
  padding: 0;
  list-style: none;
}

.gpu-ext {
  margin-top: 0.6rem;
  padding: 0.2rem 0.9rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0.7rem;
}

.gpu-ext summary {
  padding: 0.55rem 0;
  font-weight: 600;
  cursor: pointer;
}

.gpu-ext-list {
  columns: 14rem;
  margin: 0 0 0.8rem;
  padding: 0;
  list-style: none;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.gpu-ext-list li {
  break-inside: avoid;
  padding: 0.1rem 0;
  overflow-wrap: anywhere;
}

/* Form controls ------------------------------------------------------------- */
.gpu-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0.9rem 1.2rem;
  align-items: end;
}

.gpu-field label,
.gpu-field legend {
  display: block;
  margin: 0 0 0.3rem;
  padding: 0;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.gpu-field fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.gpu-field select {
  width: 100%;
  min-height: 2.6rem;
  padding: 0.45rem 0.7rem;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 0.7rem;
}

.gpu-field select:disabled {
  opacity: 0.6;
}

.gpu-radios {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.gpu-radios label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
  padding: 0.45rem 0.8rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 0.7rem;
  cursor: pointer;
}

.gpu-radios input {
  accent-color: var(--accent);
}

.gpu-radios input:checked + span {
  color: var(--accent);
}

.gpu-radios input:disabled + span {
  opacity: 0.6;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* Test view + progress ------------------------------------------------------- */
.gpu-status-line {
  margin: 0.9rem 0 0;
  font-weight: 600;
}

.gpu-progress {
  height: 0.6rem;
  margin: 0.6rem 0;
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
}

.gpu-progress-bar {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-strong), var(--accent));
}

.gpu-times {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.5rem;
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.gpu-view {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.9rem;
  min-height: 9rem;
  overflow: hidden;
  background: #0b1118;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.gpu-view canvas {
  display: block;
  width: 100%;
  height: auto;
}

.gpu-view-empty {
  margin: 0;
  padding: 2rem 1rem;
  text-align: center;
  color: var(--text-muted);
}

/* Metrics -------------------------------------------------------------------- */
.gpu-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
  gap: 0.6rem;
  margin-bottom: 0.9rem;
}

.gpu-metric {
  padding: 0.7rem 0.85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0.8rem;
}

.gpu-metric p {
  margin: 0;
}

.gpu-metric .lab {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.gpu-metric .val {
  font-size: 1.45rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.gpu-graph {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
}

/* Stress warning ----------------------------------------------------------------- */
.gpu-warning {
  margin: 0.9rem 0 0;
  padding: 1rem 1.1rem;
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid var(--gpu-warn);
  border-radius: var(--radius);
}

.gpu-warning h3 {
  margin: 0 0 0.4rem;
}

.gpu-warning p {
  margin: 0 0 0.8rem;
}

.gpu-caution {
  padding: 0.7rem 0.95rem;
  font-size: 0.92rem;
  background: rgba(251, 191, 36, 0.1);
  border-left: 3px solid var(--gpu-warn);
  border-radius: 0 0.7rem 0.7rem 0;
}

/* Visual legend ---------------------------------------------------------------------- */
.gpu-legend {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.3rem 0.6rem;
  margin: 0.6rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
}

.gpu-check {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
}

.gpu-check input {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--accent);
}

/* Results ------------------------------------------------------------------------------ */
.gpu-results-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  margin-bottom: 0.7rem;
}

.gpu-results-head h3 {
  margin: 0;
}

.gpu-copy-box {
  width: 100%;
  min-height: 8rem;
  margin-top: 0.7rem;
  padding: 0.7rem;
  font: 0.82rem ui-monospace, "Cascadia Mono", Consolas, monospace;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 0.7rem;
}

@media (max-width: 560px) {
  .gpu-legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gpu .kt-dl {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }

  .gpu .kt-dl dd {
    margin-bottom: 0.5rem;
  }
}