:root {
  --bg: #f3efe4;
  --paper: rgba(255, 251, 242, 0.88);
  --ink: #1d2b24;
  --muted: #5b655e;
  --accent: #b4482d;
  --accent-strong: #8d301a;
  --line: rgba(29, 43, 36, 0.12);
  --shadow: 0 24px 80px rgba(74, 53, 37, 0.12);
  --speaker-0: #8d301a;
  --speaker-0-bg: rgba(180, 72, 45, 0.12);
  --speaker-1: #1f5c4a;
  --speaker-1-bg: rgba(48, 129, 106, 0.12);
  --speaker-2: #305fa8;
  --speaker-2-bg: rgba(48, 95, 168, 0.12);
  --speaker-3: #7a4aa6;
  --speaker-3-bg: rgba(122, 74, 166, 0.12);
  --speaker-4: #9a6a16;
  --speaker-4-bg: rgba(154, 106, 22, 0.12);
  --speaker-5: #8b3b63;
  --speaker-5-bg: rgba(139, 59, 99, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(180, 72, 45, 0.16), transparent 26%),
    radial-gradient(circle at right center, rgba(108, 145, 97, 0.18), transparent 25%),
    linear-gradient(180deg, #f8f4e9 0%, #ede6d5 100%);
}

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 64px;
}

.hero {
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
  color: var(--accent-strong);
}

h1 {
  margin: 0;
  font-size: clamp(2.3rem, 6vw, 4.6rem);
  line-height: 0.95;
  max-width: 10ch;
  font-family: "Azeret Mono", "IBM Plex Sans", sans-serif;
}

.lede {
  max-width: 58ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.controls {
  padding: 24px;
  margin-bottom: 18px;
}

.control-row,
.toggle-row,
.actions,
.result-head,
.upload-box {
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
}

.control-row {
  margin-bottom: 16px;
}

label {
  font-size: 0.96rem;
}

select,
button {
  font: inherit;
}

select,
.actions button {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
}

.toggle-row {
  color: var(--muted);
  margin-bottom: 18px;
}

.record-button {
  width: 100%;
  min-height: 124px;
  border: none;
  border-radius: 28px;
  background:
    linear-gradient(135deg, #cf5d3f 0%, #b4482d 55%, #872f1d 100%);
  color: #fffaf4;
  font-size: clamp(1.3rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, filter 140ms ease;
  box-shadow: 0 20px 40px rgba(180, 72, 45, 0.28);
}

.record-button:hover {
  transform: translateY(-1px);
}

.record-button:active,
.record-button.recording {
  transform: scale(0.99);
  filter: saturate(1.08);
  box-shadow: 0 0 0 10px rgba(180, 72, 45, 0.12);
}

.actions {
  margin-top: 16px;
}

.upload-box {
  margin-top: 16px;
  padding: 14px 16px;
  border: 1px dashed var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.5);
}

.upload-label {
  font-weight: 600;
}

#file-input {
  max-width: 100%;
}

.status,
.meta {
  color: var(--muted);
}

.result-panel {
  padding: 24px;
}

h2 {
  margin: 0;
  font-size: 1.1rem;
}

.result {
  margin: 18px 0 0;
  min-height: 220px;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  white-space: pre-wrap;
  line-height: 1.55;
  font-family: "IBM Plex Mono", monospace;
  overflow-wrap: anywhere;
}

.tts-panel {
  margin-top: 14px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.62);
}

.tts-head {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.tts-controls {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 12px;
  flex-wrap: wrap;
}

.tts-controls select {
  min-width: 180px;
}

.tts-audio {
  width: 100%;
  margin-top: 12px;
}

.segments {
  margin: 14px 0 0;
  min-height: 120px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(243, 239, 228, 0.8);
  color: var(--muted);
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.segments-empty {
  white-space: pre-wrap;
  font-family: "IBM Plex Mono", monospace;
}

.speaker-list {
  display: grid;
  gap: 12px;
}

.speaker-card {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.72);
}

.speaker-card[data-speaker-color="0"] {
  background: var(--speaker-0-bg);
  border-color: color-mix(in srgb, var(--speaker-0) 24%, transparent);
}

.speaker-card[data-speaker-color="1"] {
  background: var(--speaker-1-bg);
  border-color: color-mix(in srgb, var(--speaker-1) 24%, transparent);
}

.speaker-card[data-speaker-color="2"] {
  background: var(--speaker-2-bg);
  border-color: color-mix(in srgb, var(--speaker-2) 24%, transparent);
}

.speaker-card[data-speaker-color="3"] {
  background: var(--speaker-3-bg);
  border-color: color-mix(in srgb, var(--speaker-3) 24%, transparent);
}

.speaker-card[data-speaker-color="4"] {
  background: var(--speaker-4-bg);
  border-color: color-mix(in srgb, var(--speaker-4) 24%, transparent);
}

.speaker-card[data-speaker-color="5"] {
  background: var(--speaker-5-bg);
  border-color: color-mix(in srgb, var(--speaker-5) 24%, transparent);
}

.speaker-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.speaker-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 92px;
  padding: 5px 10px;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: rgba(255, 255, 255, 0.82);
}

.speaker-badge[data-speaker-color="0"] {
  color: var(--speaker-0);
}

.speaker-badge[data-speaker-color="1"] {
  color: var(--speaker-1);
}

.speaker-badge[data-speaker-color="2"] {
  color: var(--speaker-2);
}

.speaker-badge[data-speaker-color="3"] {
  color: var(--speaker-3);
}

.speaker-badge[data-speaker-color="4"] {
  color: var(--speaker-4);
}

.speaker-badge[data-speaker-color="5"] {
  color: var(--speaker-5);
}

.speaker-time {
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.84rem;
}

.speaker-text {
  margin: 0;
  white-space: pre-wrap;
  font-family: "IBM Plex Mono", monospace;
  color: var(--ink);
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 20px, 920px);
    padding-top: 24px;
  }

  .controls,
  .result-panel {
    padding: 18px;
  }

  .record-button {
    min-height: 108px;
  }
}