/* Shared styles for experiments.n0tls.com — matches n0tls.com design */

:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --text-light: #666666;
  --link: #0066cc;
  --link-hover: #0052a3;
  --border: #e0e0e0;
  --code-bg: #f5f5f5;
  --header-bg: #fafafa;
  --card-bg: #f5f5f5;
  --card-bg-hover: #ebebeb;
  --accent: #3b5cf6;
  --accent-hover: #5a7cf8;
  --input-bg: #f0f0f0;
  --input-border: #d0d0d0;
  --input-focus: #3b5cf6;
  --slider-track: #d0d0d0;
  --slider-thumb: #3b5cf6;
}

[data-theme="dark"] {
  --bg: #1a1a1a;
  --text: #e0e0e0;
  --text-light: #999999;
  --link: #66b3ff;
  --link-hover: #99ccff;
  --border: #333333;
  --code-bg: #2a2a2a;
  --header-bg: #0d0d0d;
  --card-bg: #26262c;
  --card-bg-hover: #2a2a32;
  --accent: #5a7cf8;
  --accent-hover: #7a96ff;
  --input-bg: #26262c;
  --input-border: #38383f;
  --input-focus: #5a7cf8;
  --slider-track: #38383f;
  --slider-thumb: #5a7cf8;
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
  transition: background-color 0.3s ease, color 0.3s ease;
}

header {
  background-color: var(--header-bg);
  padding: 1.5rem;
  margin: -2rem -1rem 2rem -1rem;
  border-bottom: 1px solid var(--border);
}

header h1 {
  margin: 0 0 0.5rem 0;
  font-size: 2rem;
}

header nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

h1, h2, h3, h4, h5, h6 {
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

code {
  background-color: var(--code-bg);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 0.9em;
}

pre {
  background-color: var(--code-bg);
  padding: 1rem;
  border-radius: 5px;
  overflow-x: auto;
  border: 1px solid var(--border);
}

pre code {
  background-color: transparent;
  padding: 0;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* Dark mode toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  padding: 0.3rem 0.4rem;
  border-radius: 5px;
  font-size: 1rem;
  line-height: 1;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background-color: var(--code-bg);
}

/* Footer */
footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-light);
  font-size: 0.9rem;
}

/* ── Experiment index cards ── */
.experiment-list {
  margin-top: 1.5rem;
}

.experiment-card {
  display: block;
  text-decoration: none;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 0.875rem;
  transition: border-color 0.15s, background 0.15s;
  color: var(--text);
}

.experiment-card:hover {
  border-color: var(--accent);
  background: var(--card-bg-hover);
  text-decoration: none;
  color: var(--text);
}

.experiment-card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--text);
}

.experiment-card-desc {
  font-size: 0.875rem;
  color: var(--text-light);
  line-height: 1.5;
}

.experiment-card-meta {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: 0.6rem;
  opacity: 0.7;
}

/* ── Experiment page layout ── */
.experiment-page h1 {
  font-size: 1.5rem;
  margin-top: 0;
}

.tagline {
  font-size: 0.875rem;
  color: var(--text-light);
  margin-bottom: 1.75rem;
}

.tagline a {
  color: var(--text-light);
}

/* ── Form elements ── */
.field {
  margin-bottom: 1.25rem;
}

.field label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-light);
  margin-bottom: 0.4rem;
}

textarea,
select {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 6px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
  padding: 0.6rem 0.75rem;
  outline: none;
  transition: border-color 0.15s;
}

textarea {
  resize: vertical;
  min-height: 100px;
}

textarea:focus,
select:focus {
  border-color: var(--input-focus);
}

textarea.over-limit {
  border-color: #c04040;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23888' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 2rem;
  cursor: pointer;
}

.word-count {
  font-size: 0.75rem;
  color: var(--text-light);
  text-align: right;
  margin-top: 4px;
}

.word-count.over {
  color: #e05050;
}

/* ── Sliders ── */
.slider-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  height: 4px;
  border-radius: 2px;
  background: var(--slider-track);
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--slider-thumb);
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  background: var(--accent-hover);
  transform: scale(1.15);
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: none;
  border-radius: 50%;
  background: var(--slider-thumb);
  cursor: pointer;
}

.slider-value {
  font-size: 0.83rem;
  font-variant-numeric: tabular-nums;
  color: var(--text-light);
  min-width: 40px;
  text-align: right;
}

/* ── Buttons ── */
.btn-primary {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.7rem 1.25rem;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

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

.btn-ghost {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-light);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.82rem;
  padding: 0.3rem 0.6rem;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--text-light);
  background: var(--card-bg);
}

/* ── Result / audio ── */
.result {
  margin-top: 1.25rem;
}

audio {
  width: 100%;
  accent-color: var(--accent);
  margin-top: 4px;
}

.latency {
  font-size: 0.78rem;
  color: var(--text-light);
  margin-top: 6px;
  text-align: right;
}

/* ── Messages ── */
.msg-error {
  background: #fff0f0;
  border: 1px solid #f0b0b0;
  border-radius: 6px;
  color: #c04040;
  font-size: 0.875rem;
  margin-top: 0.875rem;
  padding: 0.625rem 0.875rem;
}

[data-theme="dark"] .msg-error {
  background: #2e1a1a;
  border-color: #5c2a2a;
  color: #f08080;
}

.msg-busy {
  background: #f0f4ff;
  border: 1px solid #c0d0f8;
  border-radius: 6px;
  color: #5060b0;
  font-size: 0.875rem;
  margin-top: 0.875rem;
  padding: 0.625rem 0.875rem;
}

[data-theme="dark"] .msg-busy {
  background: #1e2030;
  border-color: #3a3a5c;
  color: #8888cc;
}

.hidden {
  display: none;
}

/* ── Info tooltip ── */
.info-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-light);
  cursor: pointer;
  font-size: 0.62rem;
  font-weight: 700;
  width: 14px;
  height: 14px;
  line-height: 12px;
  text-align: center;
  padding: 0;
  flex-shrink: 0;
  transition: color 0.15s, border-color 0.15s;
}

.info-btn:hover {
  color: var(--text);
  border-color: var(--text);
}

.tooltip {
  position: absolute;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.8rem;
  line-height: 1.45;
  max-width: 240px;
  padding: 9px 12px;
  z-index: 10;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

/* ── Comparison matrix ── */
.matrix-section {
  margin-top: 2.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 0.25rem;
}

.section-header h2 {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-light);
  margin: 0;
}

.section-subtitle {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 0.875rem;
  opacity: 0.8;
}

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.matrix-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px;
}

.matrix-card.r5 {
  border-color: var(--accent);
}

.mc-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 6px;
  margin-bottom: 4px;
}

.mc-stars {
  font-size: 0.78rem;
  color: #f0b429;
}

.mc-model {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.mc-text {
  font-size: 0.8rem;
  color: var(--text);
  margin-bottom: 5px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.mc-params {
  font-size: 0.7rem;
  color: var(--text-light);
  margin-bottom: 7px;
  opacity: 0.8;
}

.mc-params span {
  margin-right: 7px;
}

.mc-load-btn {
  background: none;
  border: none;
  border-radius: 4px;
  color: var(--text-light);
  cursor: pointer;
  font-size: 1rem;
  padding: 2px 5px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: color 0.15s, background 0.15s;
}

.mc-load-btn:hover {
  background: var(--code-bg);
  color: var(--accent);
}

.matrix-card audio {
  width: 100%;
  height: 28px;
}

/* ── History ── */
.history-section {
  margin-top: 2.25rem;
  border-top: 1px solid var(--border);
  padding-top: 1.375rem;
}

.history-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 11px 13px;
  margin-bottom: 9px;
}

.hi-text {
  font-size: 0.88rem;
  color: var(--text);
  margin-bottom: 5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hi-meta {
  font-size: 0.72rem;
  color: var(--text-light);
  margin-bottom: 7px;
  opacity: 0.8;
}

.hi-meta span {
  margin-right: 10px;
}

.hi-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 6px;
}

.hi-footer audio {
  flex: 1;
  height: 28px;
}

.stars {
  display: flex;
  gap: 3px;
  flex-shrink: 0;
}

.stars button {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  color: var(--border);
  padding: 0;
  line-height: 1;
  transition: color 0.1s;
}

.stars:hover button {
  color: #f0b429;
}

.stars:hover button:hover ~ button {
  color: var(--border);
}

.stars button.active {
  color: #f0b429;
}

/* ── Batch comparison specific ── */
.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.preset-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-light);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.78rem;
  padding: 3px 9px;
  transition: border-color 0.15s, color 0.15s;
}

.preset-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.25rem;
}

.compare-col {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
}

.compare-col h3 {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-light);
  margin: 0 0 0.5rem 0;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 4px;
}

.stat-row .stat-val {
  font-variant-numeric: tabular-nums;
  color: var(--text);
  font-weight: 500;
}

.winner {
  border-color: var(--accent);
}

.privacy-notice {
  margin-top: 2.25rem;
  font-size: 0.75rem;
  color: var(--text-light);
  text-align: center;
  opacity: 0.7;
}

/* ── Responsive ── */
@media (max-width: 600px) {
  body {
    padding: 1rem 0.5rem;
  }

  header {
    margin: -1rem -0.5rem 1.5rem -0.5rem;
    padding: 1rem;
  }

  header nav {
    gap: 1rem;
  }

  header nav .nav-label {
    display: none;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.25rem; }

  .compare-grid {
    grid-template-columns: 1fr;
  }
}