/*
 * Tiger Trainer — single-stylesheet visual design.
 *
 * Design goals (set 2026-05-20):
 *   - Dark theme by default. Cinematographers work in low light.
 *   - LARGE phrase text. Operators read off a screen at arm's length.
 *   - Tablet/phone Chrome-responsive — fluid widths, no fixed pixels.
 *   - One stylesheet, no framework. Auditable in a single read.
 *   - No web fonts. System UI font stack so we don't pull in Google.
 */

:root {
  --bg: #1a1a1a;
  --bg-card: #262626;
  --fg: #e8e8e8;
  --fg-dim: #aaa;
  --accent: #f5a623;          /* tiger-amber */
  --accent-fg: #1a1a1a;
  --danger: #d65a5a;
  --success: #5ad670;
  --border: #3a3a3a;
  --radius: 8px;
  --gap: 1rem;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f5f5;
    --bg-card: #ffffff;
    --fg: #1a1a1a;
    --fg-dim: #555;
    --border: #d0d0d0;
    --accent-fg: #ffffff;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  min-height: 100vh;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

.screen { display: none; }
.screen.visible { display: block; }

header {
  margin-bottom: 1.5rem;
}

h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
  font-weight: 600;
}

h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
}

.subtitle {
  color: var(--fg-dim);
  margin: 0;
  font-size: 1rem;
}

.hint {
  color: var(--fg-dim);
  font-size: 0.9rem;
  margin: 0 0 0.75rem;
}

/* ------------------------------------------------------------------ */
/* Cards (the boxed sections on onboarding + summary)                 */
/* ------------------------------------------------------------------ */

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

.consent {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.4;
  max-height: 16em;
  overflow-y: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* ------------------------------------------------------------------ */
/* Form fields                                                        */
/* ------------------------------------------------------------------ */

.field {
  display: block;
  margin-bottom: 0.75rem;
}

.field-label {
  display: block;
  font-size: 0.85rem;
  color: var(--fg-dim);
  margin-bottom: 0.25rem;
}

input[type="text"] {
  width: 100%;
  padding: 0.6rem 0.75rem;
  font-size: 1rem;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

input[type="text"]:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-top: 1rem;
  cursor: pointer;
}

.checkbox input {
  margin-top: 0.2rem;
  width: 1.1rem;
  height: 1.1rem;
}

/* ------------------------------------------------------------------ */
/* Buttons                                                            */
/* ------------------------------------------------------------------ */

button {
  font: inherit;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--fg);
  cursor: pointer;
  font-weight: 500;
  transition: filter 0.1s ease, transform 0.05s ease;
}

button:hover:not(:disabled) {
  filter: brightness(1.15);
}

button:active:not(:disabled) {
  transform: translateY(1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

button.primary {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
  font-weight: 600;
}

button.quiet {
  background: transparent;
  color: var(--fg-dim);
}

.button-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

.button-row button {
  flex: 1 1 auto;
  min-width: 7em;
}

/* ------------------------------------------------------------------ */
/* Recording screen                                                   */
/* ------------------------------------------------------------------ */

.recording-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1rem;
}

.phrase-section {
  font-size: 0.95rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.progress {
  color: var(--fg-dim);
  font-size: 0.95rem;
  margin: 0;
}

.phrase-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.phrase-prompt {
  color: var(--fg-dim);
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.phrase-text {
  font-size: clamp(1.5rem, 5vw, 2.25rem);
  font-weight: 600;
  margin: 0;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.controls {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.state-pill {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.state-idle {
  background: var(--bg);
  color: var(--fg-dim);
  border: 1px solid var(--border);
}

.state-recording {
  background: var(--danger);
  color: white;
  animation: pulse 1.2s ease-in-out infinite;
}

.state-reviewing {
  background: var(--accent);
  color: var(--accent-fg);
}

@keyframes pulse {
  0%, 100% { opacity: 1.0; }
  50%      { opacity: 0.6; }
}

.quality ul {
  margin: 0;
  padding-left: 1.25rem;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9rem;
}

.quality .flags {
  margin-top: 0.5rem;
  padding-left: 1.25rem;
  color: var(--danger);
}

.speaker-tag {
  margin-top: 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--fg-dim);
}

/* ------------------------------------------------------------------ */
/* Errors                                                             */
/* ------------------------------------------------------------------ */

.error {
  background: rgba(214, 90, 90, 0.15);
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin: 0 0 1rem;
  font-size: 0.95rem;
}

/* ------------------------------------------------------------------ */
/* Summary screen                                                     */
/* ------------------------------------------------------------------ */

#summary-readout {
  margin: 0;
  padding-left: 1.25rem;
}

#summary-utterances {
  margin: 0;
  padding-left: 1.5rem;
  font-size: 0.95rem;
}

#summary-utterances li.flagged {
  color: var(--danger);
}

/* ------------------------------------------------------------------ */
/* Session-selection grid (Screen 1.5, added 2026-05-20)              */
/* ------------------------------------------------------------------ */

.session-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.75rem;
  margin: 0.5rem 0 1rem;
}

.session-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1rem;
  cursor: pointer;
  text-align: left;
  font: inherit;
  color: inherit;
  transition: border-color 0.1s ease, transform 0.05s ease;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-height: 7em;
}

.session-card:hover {
  border-color: var(--accent);
}

.session-card:active {
  transform: translateY(1px);
}

.session-card .card-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.session-card .card-progress {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 1rem;
}

.session-card .card-status {
  font-size: 0.85rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.session-card.complete {
  border-color: var(--success);
}

.session-card.complete .card-status {
  color: var(--success);
}

.session-card.in-progress {
  border-color: var(--accent);
}

.session-card.in-progress .card-status {
  color: var(--accent);
}

/* ------------------------------------------------------------------ */
/* Required-field marker (added 2026-05-21)                           */
/* ------------------------------------------------------------------ */

.required-marker {
  color: var(--danger);
  font-weight: 700;
  margin-left: 0.15em;
}

/* ------------------------------------------------------------------ */
/* Landing instructions panel (added 2026-05-21)                      */
/* ------------------------------------------------------------------ */

.instructions-card {
  border-left: 4px solid var(--accent);
}

.instructions-list {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.95rem;
  line-height: 1.55;
}

.instructions-list li {
  margin-bottom: 0.3rem;
}

.instructions-list strong {
  color: var(--accent);
  font-weight: 600;
}

/* ------------------------------------------------------------------ */
/* Mic-test + warm-up screen audio playback row (added 2026-05-21)    */
/* ------------------------------------------------------------------ */

.playback-row {
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.playback-row audio {
  width: 100%;
  max-width: 100%;
  height: 36px;
}