:root {
  color-scheme: dark;
  --bg: #090b10;
  --surface: #11151d;
  --surface-2: #171c26;
  --surface-3: #202633;
  --surface-4: #292f3c;
  --text: #f5f7fb;
  --muted: #9da6b8;
  --line: rgba(255, 255, 255, 0.09);
  --accent: #83e7cd;
  --accent-strong: #b0f8e6;
  --accent-soft: rgba(131, 231, 205, 0.12);
  --danger: #ff5263;
  --danger-soft: rgba(255, 82, 99, 0.13);
  --warning: #ffcc70;
  --success: #7ee7a8;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.35);
  --radius-large: 24px;
  --radius-medium: 17px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { min-height: 100%; background: var(--bg); }
body {
  min-width: 320px;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 85% -10%, rgba(131, 231, 205, 0.13), transparent 34rem),
    radial-gradient(circle at -15% 45%, rgba(125, 112, 255, 0.10), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", Inter, system-ui, sans-serif;
}
button, input, a { font: inherit; }
button, a.button { min-height: 48px; }
button { border: 0; cursor: pointer; }
button:disabled, input:disabled { cursor: not-allowed; opacity: 0.38; }
[hidden] { display: none !important; }

.app {
  width: min(100%, 760px);
  min-height: 100dvh;
  margin: 0 auto;
  padding: max(22px, env(safe-area-inset-top)) 16px calc(132px + env(safe-area-inset-bottom));
}
.app-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 22px; }
.eyebrow, .section-kicker { margin: 0 0 7px; color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 6px; font-size: clamp(1.85rem, 9vw, 2.7rem); line-height: .98; letter-spacing: -.055em; }
h2 { margin-bottom: 0; font-size: 1.03rem; letter-spacing: -.025em; }
.subtitle { max-width: 34rem; margin-bottom: 0; color: var(--muted); font-size: .95rem; line-height: 1.5; }
.status-pill { display: inline-flex; flex: none; align-items: center; gap: 8px; min-height: 34px; padding: 0 12px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.035); color: var(--muted); font-size: .75rem; font-weight: 750; white-space: nowrap; }
.status-pill::before { width: 7px; height: 7px; border-radius: 50%; background: currentColor; content: ""; }
.status-pill[data-state="recording"] { border-color: rgba(255,82,99,.34); background: var(--danger-soft); color: #ff9aa5; }
.status-pill[data-state="paused"] { border-color: rgba(255,204,112,.3); color: var(--warning); }
.status-pill[data-state="ready"] { border-color: rgba(126,231,168,.28); color: var(--success); }

.stack { display: grid; gap: 14px; }
.card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-large); background: linear-gradient(145deg, rgba(255,255,255,.035), rgba(255,255,255,.012)); box-shadow: var(--shadow); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
.card-content { padding: 18px; }
.notice { display: flex; gap: 13px; align-items: flex-start; padding: 15px 16px; border: 1px solid rgba(255,204,112,.18); border-radius: var(--radius-medium); background: rgba(255,204,112,.075); }
.notice-icon { flex: none; font-size: 1.2rem; line-height: 1.3; }
.notice strong { display: block; margin-bottom: 3px; font-size: .9rem; }
.notice p { margin-bottom: 0; color: #d1c4a6; font-size: .82rem; line-height: 1.45; }
.fatal-message { padding: 14px 16px; border: 1px solid rgba(255,82,99,.32); border-radius: var(--radius-medium); background: var(--danger-soft); color: #ffb3ba; font-size: .86rem; line-height: 1.45; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 15px; }
.compact-heading { margin-bottom: 13px; }
.section-kicker { margin-bottom: 4px; font-size: .66rem; }
.feature-chip { flex: none; padding: 7px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .72rem; font-weight: 700; }

.source-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.source-tab { display: flex; align-items: center; gap: 11px; min-width: 0; padding: 13px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface-2); color: var(--text); text-align: left; transition: background 160ms ease, border-color 160ms ease, transform 160ms ease; }
.source-tab:active { transform: scale(.985); }
.source-tab.is-active { border-color: rgba(131,231,205,.55); background: var(--accent-soft); }
.source-tab-icon { display: grid; flex: none; width: 34px; height: 34px; place-items: center; border-radius: 11px; background: var(--surface-3); color: var(--accent); font-weight: 800; }
.source-tab span:last-child { display: grid; min-width: 0; gap: 2px; }
.source-tab strong { font-size: .9rem; }
.source-tab small { overflow: hidden; color: var(--muted); font-size: .72rem; text-overflow: ellipsis; white-space: nowrap; }

.input-row { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 9px; }
.text-input { width: 100%; min-height: 50px; border: 1px solid var(--line); border-radius: 14px; outline: none; background: var(--surface-2); color: var(--text); padding: 0 14px; transition: border-color 150ms ease, box-shadow 150ms ease; }
.text-input:focus { border-color: rgba(131,231,205,.55); box-shadow: 0 0 0 4px rgba(131,231,205,.09); }
.primary-button, .secondary-button, .ghost-button, .danger-button, .download-button, .toggle-button { display: inline-flex; align-items: center; justify-content: center; border-radius: 14px; padding: 0 16px; font-weight: 760; text-decoration: none; }
.primary-button { background: var(--accent); color: #07100e; }
.secondary-button, .ghost-button { border: 1px solid var(--line); background: var(--surface-3); color: var(--text); }
.secondary-button:active, .ghost-button:active { background: var(--surface-4); }
.small-button { min-height: 38px; padding: 0 12px; font-size: .78rem; }
.danger-button { border: 1px solid rgba(255,82,99,.2); background: var(--danger-soft); color: #ff9aa5; }
.download-button { background: var(--accent); color: #07100e; }
.field-help, .field-error { margin: 10px 2px 0; font-size: .78rem; line-height: 1.45; }
.field-help { color: var(--muted); }
.field-error { color: #ff9aa5; }
.player-shell { aspect-ratio: 16 / 9; min-height: 220px; background: #020305; }
.player-shell iframe { display: block; width: 100%; height: 100%; border: 0; }
.player-placeholder { display: grid; width: 100%; height: 100%; min-height: 250px; place-items: center; padding: 24px; color: var(--muted); text-align: center; }
.placeholder-icon { display: grid; width: 58px; height: 58px; margin: 0 auto 12px; place-items: center; border-radius: 50%; background: rgba(255,255,255,.06); color: var(--accent); font-size: 1.3rem; }
.player-placeholder p { margin-bottom: 0; }

.upload-content { display: grid; gap: 14px; }
.upload-dropzone { display: flex; align-items: center; gap: 13px; min-height: 86px; padding: 15px; border: 1px dashed rgba(131,231,205,.35); border-radius: 18px; background: rgba(131,231,205,.055); cursor: pointer; }
.upload-dropzone input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.upload-icon { display: grid; flex: none; width: 42px; height: 42px; place-items: center; border-radius: 14px; background: var(--accent); color: #07100e; font-size: 1.4rem; }
.upload-dropzone > span:last-child { display: grid; gap: 4px; }
.upload-dropzone strong { font-size: .92rem; }
.upload-dropzone small { color: var(--muted); font-size: .75rem; line-height: 1.35; }
.track-panel { display: grid; gap: 14px; }
.track-heading { display: grid; grid-template-columns: auto minmax(0,1fr) auto; gap: 11px; align-items: center; padding: 12px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface-2); }
.track-icon { display: grid; width: 39px; height: 39px; place-items: center; border-radius: 13px; background: var(--accent-soft); color: var(--accent); }
.track-copy { display: grid; min-width: 0; gap: 3px; }
.track-copy strong, .track-copy span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.track-copy strong { font-size: .9rem; }
.track-copy span { color: var(--muted); font-size: .74rem; }
.waveform-shell { overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: #0b0e14; }
#waveform { min-height: 190px; padding-top: 8px; }
#timeline { min-height: 24px; border-top: 1px solid var(--line); }
#waveform ::part(scroll) { scrollbar-width: none; }
#waveform ::part(scroll)::-webkit-scrollbar { display: none; }
#waveform ::part(region) { border-left: 2px solid var(--accent); border-right: 2px solid var(--accent); background: rgba(131,231,205,.18) !important; }
.waveform-times { display: flex; justify-content: space-between; padding: 10px 13px 12px; color: var(--muted); font-variant-numeric: tabular-nums; font-size: .78rem; }
.waveform-times strong { color: var(--text); }
.transport-row { display: grid; grid-template-columns: 1fr minmax(130px,1.45fr) 1fr; gap: 10px; }
.transport-button, .play-button { min-height: 58px; border-radius: 17px; }
.transport-button { display: grid; place-items: center; gap: 1px; border: 1px solid var(--line); background: var(--surface-3); color: var(--text); }
.transport-button span { font-size: 1.1rem; }
.transport-button small { color: var(--muted); font-weight: 700; }
.play-button { display: flex; align-items: center; justify-content: center; gap: 10px; background: var(--accent); color: #07100e; font-weight: 800; }
.practice-grid { display: grid; gap: 10px; }
.tool-panel { padding: 14px; border: 1px solid var(--line); border-radius: 17px; background: rgba(255,255,255,.018); }
.tool-heading, .range-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.tool-heading > div { display: grid; gap: 3px; }
.tool-label, .range-heading label { color: var(--muted); font-size: .74rem; font-weight: 720; }
.tool-heading strong, .range-heading output { font-size: .85rem; font-variant-numeric: tabular-nums; }
.toggle-button { min-height: 38px; border: 1px solid var(--line); background: var(--surface-3); color: var(--muted); font-size: .75rem; }
.toggle-button[aria-pressed="true"] { border-color: rgba(131,231,205,.45); background: var(--accent-soft); color: var(--accent); }
.button-grid { display: grid; gap: 8px; margin-top: 12px; }
.three-buttons { grid-template-columns: repeat(3,1fr); }
.button-grid .secondary-button { min-height: 42px; font-size: .8rem; }
.range-input { width: 100%; margin: 14px 0 0; accent-color: var(--accent); }

.mode-fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.mode-legend { margin-bottom: 10px; color: var(--muted); font-size: .76rem; font-weight: 700; }
.mode-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mode-option { position: relative; display: block; cursor: pointer; }
.mode-option input { position: absolute; opacity: 0; pointer-events: none; }
.mode-content { display: grid; height: 100%; gap: 7px; padding: 14px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface-2); }
.mode-option input:checked + .mode-content { border-color: rgba(131,231,205,.48); background: var(--accent-soft); }
.mode-title { font-size: .88rem; font-weight: 800; }
.mode-description { color: var(--muted); font-size: .74rem; line-height: 1.45; }
.recommended-pill { display: inline-flex; margin-left: 4px; padding: 3px 6px; border-radius: 999px; background: var(--accent); color: #07100e; font-size: .58rem; vertical-align: middle; }
.recorder-display { display: grid; gap: 13px; margin-top: 17px; }
.timer { font-size: clamp(2.3rem, 13vw, 4.5rem); font-weight: 680; line-height: 1; letter-spacing: -.065em; text-align: center; font-variant-numeric: tabular-nums; }
.recording-info { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; }
.info-tile { display: grid; gap: 4px; padding: 11px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface-2); }
.info-label { color: var(--muted); font-size: .66rem; }
.info-value { overflow: hidden; font-size: .78rem; text-overflow: ellipsis; white-space: nowrap; }
.clip-badge[data-state="clip"] { color: #ff7b89; }
.clip-badge[data-state="near"] { color: var(--warning); }
.clip-badge[data-state="safe"] { color: var(--success); }
.meter { position: relative; height: 14px; overflow: hidden; border-radius: 999px; background: linear-gradient(90deg, rgba(126,231,168,.18) 0 70%, rgba(255,204,112,.2) 70% 90%, rgba(255,82,99,.22) 90% 100%); }
.meter-fill { width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--success), var(--warning) 78%, var(--danger)); transition: width 80ms linear; }
.meter-labels { display: flex; justify-content: space-between; margin-top: -8px; color: #697286; font-size: .62rem; }
.mic-settings, .recorder-hint { margin: 0; color: var(--muted); font-size: .76rem; line-height: 1.5; }
.result-grid { display: grid; gap: 13px; }
.result-grid audio { width: 100%; }
.filename-row { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 9px; }

.recorder-dock { position: fixed; z-index: 20; right: 0; bottom: 0; left: 0; padding: 11px 16px calc(11px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: rgba(9,11,16,.84); backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px); }
.dock-inner { display: grid; width: min(100%, 720px); margin: 0 auto; grid-template-columns: 1fr 1.45fr 1fr; gap: 10px; }
.dock-button { display: flex; align-items: center; justify-content: center; gap: 7px; min-height: 56px; border: 1px solid var(--line); border-radius: 17px; background: var(--surface-2); color: var(--text); font-weight: 760; }
.record-button { background: #f6f8fb; color: #151922; }
.record-button[data-active="true"] { border-color: rgba(255,82,99,.35); background: var(--danger-soft); color: #ff9aa5; }
.record-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--danger); }
.dock-symbol { font-size: .88rem; }

.sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }

@media (max-width: 560px) {
  .app-header { align-items: flex-start; }
  .status-pill { margin-top: 2px; }
  .source-tab { padding: 11px; }
  .source-tab-icon { width: 31px; height: 31px; }
  .input-row, .filename-row { grid-template-columns: 1fr; }
  .primary-button, .download-button { width: 100%; }
  .mode-grid { grid-template-columns: 1fr; }
  .player-shell { min-height: 0; }
  .track-heading { grid-template-columns: auto minmax(0,1fr); }
  .track-heading .small-button { grid-column: 1 / -1; }
}

@media (max-width: 380px) {
  .app { padding-right: 12px; padding-left: 12px; }
  .source-tabs { grid-template-columns: 1fr; }
  .recording-info { grid-template-columns: 1fr; }
  .transport-row { grid-template-columns: 1fr 1.25fr 1fr; }
  .dock-inner { gap: 7px; }
  .dock-button { min-height: 52px; font-size: .82rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .001ms !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
}