/* ============================================================
   Ghi Chép — Voice App (Netlify, thuần JS)
   Token theme: [data-theme="dark"] (mặc định) / [data-theme="light"]
   ============================================================ */

:root {
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --font-ui: -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Georgia, "Noto Serif", serif;
}

/* ---------- Theme tokens ---------- */
:root,
[data-theme="dark"] {
  --bg: #14181d;
  --panel: #1b2027;
  --panel-raised: #222831;
  --line: #2c333d;
  --text: #e9e5da;
  --text-dim: #8a92a1;
  --accent: #c9902f;
  --accent-dim: #7a6636;
  --accent-contrast: #14181d;
  --danger: #c65a45;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

[data-theme="light"] {
  --bg: #f3efe6;
  --panel: #ffffff;
  --panel-raised: #f7f4ed;
  --line: #ddd6c6;
  --text: #262320;
  --text-dim: #7a7566;
  --accent: #a8701f;
  --accent-dim: #d9b878;
  --accent-contrast: #ffffff;
  --danger: #b8503c;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  transition: background 0.2s ease, color 0.2s ease;
}

.app {
  max-width: 720px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

button, select, input, textarea {
  font-family: inherit;
  color: inherit;
}

/* ---------- Header ---------- */

.app-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 16px 14px;
  border-bottom: 1px solid var(--line);
}

.app-logo {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;   /* nếu ảnh không vuông, ảnh vẫn không bị méo */
  flex-shrink: 0;      /* không bị ép nhỏ khi tên tiêu đề dài */
}

.title-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-serif);
  font-size: 19px;
  color: var(--text);
  min-width: 0;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--panel);
  cursor: pointer;
  flex-shrink: 0;
}

.icon-btn svg { width: 18px; height: 18px; stroke: var(--text); }
.icon-btn:hover { border-color: var(--accent-dim); }

/* ---------- Layout ---------- */

.deck {
  flex: 1;
  padding: 18px 16px 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

section {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius-lg);
  padding: 18px;
}

/* ---------- Recorder ---------- */

.recorder-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.mic-btn {
  --mic-size: 92px;
  width: var(--mic-size);
  height: var(--mic-size);
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: var(--accent-contrast);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  box-shadow: var(--shadow);
  transition: transform 0.12s ease;
}

.mic-btn:active { transform: scale(0.96); }

.mic-btn svg { width: 38px; height: 38px; stroke: var(--accent-contrast); }

.mic-btn::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  opacity: 0;
}

.mic-btn[aria-pressed="true"] {
  background: var(--danger);
}

.mic-btn[aria-pressed="true"] svg { stroke: #fff; }

.mic-btn[aria-pressed="true"]::before {
  opacity: 1;
  animation: mic-pulse 1.6s ease-out infinite;
  border-color: var(--danger);
}

@keyframes mic-pulse {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.35); opacity: 0; }
}

.vu-meter {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 18px;
}

.vu-bar {
  width: 4px;
  height: 30%;
  border-radius: 2px;
  background: var(--line);
  transition: height 0.08s ease, background 0.08s ease;
}

.vu-bar--active {
  background: var(--accent);
  height: 100%;
}

.timer {
  font-variant-numeric: tabular-nums;
  color: var(--text-dim);
  font-size: 13.5px;
}

.rec-status {
  font-size: 12.5px;
  color: var(--accent);
  min-height: 16px;
}

/* Nguồn audio + settings */

.source-row {
  display: flex;
  gap: 10px;
  width: 100%;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.field-inline {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11.5px;
  color: var(--text-dim);
}

.field__control {
  background: var(--panel-raised);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 8px 10px;
  font-size: 13.5px;
  border-radius: var(--radius-sm);
  min-width: 150px;
}

/* ---------- Editor ---------- */

.editor-panel__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  gap: 8px;
}

.editor-panel__title {
  font-family: var(--font-serif);
  font-size: 15.5px;
}

.editor-panel__actions {
  display: flex;
  gap: 6px;
}

.chip-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 1px solid var(--line);
  background: var(--panel-raised);
  color: var(--text);
  padding: 6px 10px;
  font-size: 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.chip-btn svg { width: 13px; height: 13px; stroke: currentColor; }
.chip-btn:hover { border-color: var(--accent-dim); }

.editor {
  width: 100%;
  min-height: 220px;
  resize: vertical;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font-serif);
  font-size: 16.5px;
  line-height: 1.65;
  padding: 0;
}

.editor::placeholder { color: var(--text-dim); }

.interim-line {
  min-height: 18px;
  font-size: 13px;
  color: var(--text-dim);
  font-style: italic;
  margin-top: 6px;
}

.editor-panel__foot {
  display: flex;
  justify-content: flex-end;
  margin-top: 8px;
}

.char-count {
  font-size: 11.5px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

/* ---------- TTS panel ---------- */

.tts-panel__row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.tts-panel__row + .tts-panel__row { margin-top: 14px; }

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--text-dim);
  flex: 1;
  min-width: 130px;
}

.tts-audio {
  flex: 1;
  min-width: 200px;
  height: 34px;
}

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

.btn {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  padding: 10px 16px;
  font-size: 13.5px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn svg { width: 14px; height: 14px; stroke: currentColor; }
.btn--ghost:hover { border-color: var(--accent-dim); }

.btn--primary {
  border-color: var(--accent-dim);
  color: var(--accent-contrast);
  background: var(--accent);
}

/* ---------- Save panel ---------- */

.save-panel {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.save-panel__status {
  margin-left: auto;
  font-size: 12px;
  color: var(--text-dim);
}

/* ---------- Settings (details) ---------- */

.settings-panel summary {
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 15px;
  list-style: none;
}
.settings-panel summary::-webkit-details-marker { display: none; }

.settings-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 14px;
}

.settings-grid .field__control { width: 100%; min-width: 0; }

.settings-hint {
  font-size: 11.5px;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  background: var(--panel);
  border: 1px solid var(--danger);
  color: var(--text);
  padding: 12px 18px;
  font-size: 13px;
  max-width: 92%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  z-index: 20;
}

@media (max-width: 480px) {
  .deck { padding: 14px; gap: 14px; }
  section { padding: 14px; }
  .mic-btn { --mic-size: 80px; }
}