[hidden] {
  display: none !important;
}

:root {
  --ink: #16181c;
  --ink-raised: #1e2126;
  --ink-card: #24272d;
  --paper: #ede6d8;
  --paper-dim: #a7a191;
  --lamp: #e8a33d;
  --lamp-dim: #7a5a26;
  --teal: #3f8f83;
  --border: rgba(237, 230, 216, 0.1);
  --border-strong: rgba(237, 230, 216, 0.18);
  --font-display: "Fraunces", serif;
  --font-body: "Inter", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 24px 56px;
  min-height: 100dvh;
}

.app-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.app-header.hero {
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 56px;
}
.hero .wordmark {
  font-size: 32px;
  line-height: 1.05;
}
.hero .tagline {
  font-size: 15px;
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.tagline {
  font-size: 13px;
  color: var(--paper-dim);
}

/* --- Site info zone (marketing/about content, visually distinct from the tool) --- */
.site-info {
  background: var(--ink-raised);
  border-top: 1px solid var(--border-strong);
}
.site-info-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.info-section {
  padding: 48px 0;
  border-top: 1px solid var(--border);
}
.info-section:first-child { border-top: none; }

.info-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 24px;
  margin: 0 0 32px;
  color: var(--paper);
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.step-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--ink-raised);
  border: 1px solid var(--border);
  color: var(--lamp);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}
.step-title {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  color: var(--paper);
  margin: 0 0 6px;
}
.step-desc {
  font-size: 14px;
  color: var(--paper-dim);
  margin: 0;
  max-width: 460px;
}

.about-story {
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.65;
  color: var(--paper);
}
.about-story p {
  margin: 0 0 20px;
}
.about-story p:last-child { margin-bottom: 0; }
.about-signoff {
  color: var(--paper-dim);
  font-family: var(--font-body);
  font-size: 14px;
  font-style: normal;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.dev-footer {
  padding: 48px 0 24px;
  border-top: 1px solid var(--border);
  text-align: left;
}
.dev-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--paper-dim);
  margin: 0 0 6px;
}
.dev-name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 20px;
  color: var(--paper);
  margin: 0 0 14px;
}
.dev-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 20px;
}
.dev-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--paper-dim);
  font-size: 13.5px;
  text-decoration: none;
}
.dev-link:hover { color: var(--teal); }
.dev-link svg { flex-shrink: 0; }
.dev-support {
  font-size: 13px;
  color: var(--paper-dim);
  margin: 0;
  max-width: 420px;
}

.panel[data-state="hidden"] { display: none; }
.panel[data-state="active"] { display: block; }

/* --- Upload dropzone --- */
.dropzone {
  border: 1.5px dashed var(--border-strong);
  border-radius: 16px;
  padding: 56px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.dropzone:hover,
.dropzone.dragover {
  border-color: var(--lamp);
  background: rgba(232, 163, 61, 0.05);
}
.dropzone-icon {
  color: var(--paper-dim);
  margin-bottom: 16px;
}
.dropzone-title {
  margin: 0 0 6px;
  font-size: 16px;
  color: var(--paper);
}
.dropzone-browse {
  color: var(--lamp);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.dropzone-sub {
  margin: 0;
  font-size: 13px;
  color: var(--paper-dim);
}
.error-text {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 10px;
  background: rgba(224, 92, 92, 0.12);
  border: 1px solid rgba(224, 92, 92, 0.3);
  color: #e59b9b;
  font-size: 14px;
}

/* --- Status / loading --- */
.status-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 64px 0;
}
.spinner {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2.5px solid var(--border-strong);
  border-top-color: var(--lamp);
  animation: spin 0.8s linear infinite;
}
@media (prefers-reduced-motion: reduce) {
  .spinner { animation-duration: 2s; }
}
@keyframes spin { to { transform: rotate(360deg); } }
.status-text {
  font-size: 15px;
  color: var(--paper-dim);
  margin: 0;
}
.status-text span { color: var(--paper); }

/* --- File chip --- */
.file-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 10px;
  background: var(--ink-raised);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--paper-dim);
  margin-bottom: 28px;
}
.file-chip svg { color: var(--lamp); flex-shrink: 0; }
#file-chip-name {
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--paper);
}

.link-btn {
  background: none;
  border: none;
  color: var(--paper-dim);
  font-family: var(--font-body);
  font-size: 13px;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
  padding: 0;
}
.link-btn:hover { color: var(--teal); }

.primary-btn {
  background: var(--lamp);
  color: var(--ink);
  border: none;
  border-radius: 10px;
  padding: 11px 22px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
}
.primary-btn:hover { background: #f0b158; }
.primary-btn:focus-visible { outline: 2px solid var(--paper); outline-offset: 2px; }

.mode-confirm {
  margin-top: 16px;
  padding: 18px;
  background: var(--ink-raised);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
}
.mode-confirm-text {
  font-size: 14px;
  color: var(--paper);
  margin: 0 0 14px;
}
.mode-confirm-text strong { color: var(--lamp); font-weight: 600; }
.mode-confirm-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.voice-picker-hint {
  font-size: 12px;
  color: var(--paper-dim);
  margin: -4px 0 16px;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 20px;
  margin: 0 0 20px;
  color: var(--paper);
}

/* --- Mode tree --- */
.mode-tree {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.mode-card {
  background: var(--ink-raised);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.15s ease;
}
.mode-card:has(.mode-panel:not([hidden])) {
  border-color: var(--border-strong);
}
.mode-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
}
.mode-trigger:focus-visible {
  outline: 2px solid var(--lamp);
  outline-offset: -2px;
}
.mode-trigger-label {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.mode-name {
  font-size: 15px;
  font-weight: 500;
  color: var(--paper);
}
.mode-desc {
  font-size: 12.5px;
  color: var(--paper-dim);
}
.chevron {
  color: var(--paper-dim);
  flex-shrink: 0;
  transition: transform 0.15s ease;
}
.chevron.chevron-static { transform: rotate(-90deg); }
.mode-trigger[aria-expanded="true"] .chevron:not(.chevron-static) {
  transform: rotate(180deg);
  color: var(--teal);
}

.mode-panel {
  padding: 0 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.option-row {
  display: flex;
  gap: 8px;
}
.option-btn {
  flex: 1;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: var(--ink-card);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 14px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.option-btn:hover {
  border-color: var(--teal);
}
.option-btn.selected {
  border-color: var(--lamp);
  background: rgba(232, 163, 61, 0.1);
  color: var(--lamp);
}
.option-btn:focus-visible {
  outline: 2px solid var(--lamp);
  outline-offset: 1px;
}

/* --- Player --- */
.wordmark-btn {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  color: var(--paper-dim);
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
  padding: 4px 0;
  margin-bottom: 20px;
}
.back-btn:hover { color: var(--teal); }
.back-btn:focus-visible { outline: 2px solid var(--lamp); outline-offset: 2px; }

.voice-picker {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}
.voice-picker-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--ink-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.voice-picker-row label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--teal);
  width: 68px;
  flex-shrink: 0;
}
.voice-picker-row select {
  flex: 1;
  background: var(--ink-card);
  color: var(--paper);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 7px 10px;
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
}
.voice-picker-row select:focus-visible {
  outline: 2px solid var(--lamp);
}

.player-card {
  background: var(--ink-raised);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  margin-bottom: 24px;
}

.waveform {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 40px;
  margin-bottom: 24px;
}
.waveform span {
  width: 3px;
  border-radius: 2px;
  background: var(--lamp-dim);
  height: 8px;
  transition: background 0.2s ease;
}
.waveform.speaking span {
  background: var(--lamp);
  animation: wave 1s ease-in-out infinite;
}
.waveform.speaking span:nth-child(1) { animation-delay: 0s; }
.waveform.speaking span:nth-child(2) { animation-delay: 0.1s; }
.waveform.speaking span:nth-child(3) { animation-delay: 0.2s; }
.waveform.speaking span:nth-child(4) { animation-delay: 0.3s; }
.waveform.speaking span:nth-child(5) { animation-delay: 0.2s; }
.waveform.speaking span:nth-child(6) { animation-delay: 0.1s; }
.waveform.speaking span:nth-child(7) { animation-delay: 0s; }
@keyframes wave {
  0%, 100% { height: 8px; }
  50% { height: 32px; }
}
@media (prefers-reduced-motion: reduce) {
  .waveform.speaking span { animation: none; height: 20px; }
}

.player-controls {
  display: flex;
  align-items: center;
  gap: 14px;
}
.play-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--lamp);
  color: var(--ink);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}
.play-btn:hover { background: #f0b158; }
.play-btn:focus-visible { outline: 2px solid var(--paper); outline-offset: 2px; }
.play-btn svg { margin-left: 1px; }
.player-status {
  font-size: 13px;
  color: var(--paper-dim);
  flex: 1;
}

/* --- Transcript --- */
.transcript {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.transcript-line {
  display: flex;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14.5px;
  color: var(--paper-dim);
  transition: background 0.2s ease, color 0.2s ease;
}
.transcript-line .speaker-tag {
  flex-shrink: 0;
  width: 68px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--teal);
  padding-top: 2px;
}
.transcript-line.current {
  background: var(--ink-card);
  color: var(--paper);
}
.transcript-line.current .speaker-tag {
  color: var(--lamp);
}

/* --- Quiz mode styles --- */
.quiz-timer-display {
  font-size: 13px;
  font-weight: 600;
  color: var(--teal);
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(63, 143, 131, 0.12);
  border: 1px solid rgba(63, 143, 131, 0.3);
}
.quiz-timer-display.urgent {
  color: #e59b9b;
  background: rgba(224, 92, 92, 0.12);
  border-color: rgba(224, 92, 92, 0.35);
  animation: timer-pulse 1s ease-in-out infinite;
}
@keyframes timer-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}
@media (prefers-reduced-motion: reduce) {
  .quiz-timer-display.urgent { animation: none; }
}

.quiz-overall-timer-picker {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.quiz-custom-timer-row {
  display: flex;
  gap: 8px;
}
.quiz-custom-timer-row input[type="number"] {
  flex: 1;
  padding: 11px 14px;
  background: var(--ink-card);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 14px;
}
.quiz-custom-timer-row input[type="number"]:focus {
  outline: 2px solid var(--lamp);
  border-color: transparent;
}

.quiz-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.quiz-progress {
  font-size: 13px;
  color: var(--paper-dim);
}

.quiz-score {
  font-size: 13px;
  font-weight: 600;
  color: var(--lamp);
}

.quiz-question {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--paper);
  margin-bottom: 20px;
  padding: 16px;
  background: var(--ink-raised);
  border-radius: 12px;
  border-left: 3px solid var(--lamp);
}

.quiz-answer-area {
  margin-bottom: 20px;
}

.quiz-answer-area .option-btn {
  display: block;
  width: 100%;
  text-align: left;
  margin-bottom: 6px;
  padding: 12px 16px;
}

.quiz-answer-area .option-btn.selected {
  border-color: var(--lamp);
  background: rgba(232, 163, 61, 0.1);
  color: var(--lamp);
}

.quiz-answer-area input[type="text"],
.quiz-answer-area textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--ink-card);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  resize: vertical;
}
.quiz-answer-area input[type="text"]:focus,
.quiz-answer-area textarea:focus {
  outline: 2px solid var(--lamp);
  border-color: transparent;
}

.quiz-feedback {
  padding: 16px 18px;
  border-radius: 12px;
  margin-bottom: 16px;
  font-size: 14.5px;
}
.quiz-feedback.correct {
  background: rgba(63, 143, 131, 0.15);
  border-left: 4px solid var(--teal);
  color: var(--teal);
}
.quiz-feedback.incorrect {
  background: rgba(224, 92, 92, 0.12);
  border-left: 4px solid #e05c5c;
  color: #e59b9b;
}
.quiz-feedback .explanation {
  margin-top: 8px;
  color: var(--paper-dim);
  font-size: 13.5px;
}

.quiz-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.quiz-summary {
  margin-top: 24px;
  padding: 24px;
  background: var(--ink-raised);
  border-radius: 16px;
  border: 1px solid var(--border-strong);
}
.quiz-summary-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 22px;
  margin: 0 0 12px;
}
.quiz-final-score {
  font-size: 18px;
  font-weight: 600;
  color: var(--lamp);
  margin: 0 0 16px;
}
.quiz-strong-areas,
.quiz-weak-areas {
  font-size: 14px;
  line-height: 1.7;
  margin: 0 0 10px;
}
.quiz-strong-areas {
  color: var(--teal);
}
.quiz-weak-areas {
  color: #e59b9b;
}
.quiz-strong-areas .quiz-areas-label,
.quiz-weak-areas .quiz-areas-label {
  color: var(--paper-dim);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 4px;
}
.quiz-suggestion {
  font-size: 14px;
  color: var(--paper);
  background: rgba(232, 163, 61, 0.1);
  border: 1px solid rgba(232, 163, 61, 0.25);
  border-radius: 10px;
  padding: 12px 14px;
  margin: 4px 0 18px;
}
.quiz-suggestion strong { color: var(--lamp); }
.quiz-summary-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (max-width: 480px) {
  .app { padding: 32px 16px 80px; }
  .dropzone { padding: 40px 16px; }
  .option-row { flex-direction: column; }
  .hero .wordmark { font-size: 34px; }
  .info-section { padding: 40px 0; }
  .about-story { font-size: 16px; }
}