* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-1: #0d1120;
  --bg-2: #151b31;
  --text: #eceff8;
  --muted: #8e96ad;
  --card: rgba(255, 255, 255, 0.045);
  --card-border: rgba(255, 255, 255, 0.08);
  --accent: #7c6bff;
  --accent-soft: #9f8cff;
}

html, body { height: 100%; }

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1100px 700px at 50% -12%, #232c4d 0%, transparent 60%),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 100%);
  background-attachment: fixed;
  min-height: 100dvh;
  padding: calc(env(safe-area-inset-top, 0px) + 30px) 22px calc(env(safe-area-inset-bottom, 0px) + 44px);
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
}

header { text-align: center; margin-bottom: 28px; }
h1 { font-size: 26px; font-weight: 600; letter-spacing: 3px; }
.subtitle { color: var(--muted); font-size: 13px; margin-top: 8px; letter-spacing: 1px; }

main { max-width: 520px; margin: 0 auto; }

/* ===== 录音区 ===== */
#record-view { text-align: center; }

#stage {
  position: relative;
  width: min(78vw, 260px);
  aspect-ratio: 1;
  margin: 0 auto;
}

#meter-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#record-btn {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 96px; height: 96px;
  border: none;
  background: transparent;
  cursor: pointer;
  display: grid;
  place-items: center;
  touch-action: manipulation;
}

#record-btn .core {
  position: absolute;
  inset: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 6px 24px rgba(124, 107, 255, 0.35);
  transition: border-radius .25s ease, transform .06s linear, background .25s ease;
}

#record-btn .pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.14);
  animation: pulse 2.6s ease-out infinite;
}

@keyframes pulse {
  0%   { transform: scale(1); opacity: .5; }
  100% { transform: scale(1.5); opacity: 0; }
}

body.recording #record-btn .core {
  border-radius: 30%;
  background: #e0556b;
  box-shadow: 0 6px 24px rgba(224, 85, 107, 0.4);
}
body.recording #record-btn .pulse { animation-duration: 1.1s; }

#timer {
  font-size: 15px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  margin-top: 18px;
  letter-spacing: 2px;
}

#record-hint { color: var(--muted); font-size: 13px; margin-top: 8px; }

/* ===== 画廊 ===== */
#gallery-view { margin-top: 44px; }
#gallery-view h2 { font-size: 15px; font-weight: 500; color: var(--muted); margin-bottom: 16px; letter-spacing: 2px; }

#gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 22px;
  padding: 14px;
  cursor: pointer;
  transition: transform .18s ease, border-color .18s ease;
}
.card:active { transform: scale(.97); }
.card canvas { display: block; width: 100%; height: auto; }

.card-meta { margin-top: 12px; }
.card-date { font-size: 12px; color: var(--muted); }
.card-cap { font-size: 13px; margin-top: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card-dur { font-size: 11px; color: var(--muted); margin-top: 4px; }

#empty-state { text-align: center; color: var(--muted); padding: 36px 0 12px; font-size: 15px; }
#empty-state .dim { font-size: 13px; margin-top: 10px; opacity: .7; }

/* ===== 弹层 ===== */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(7, 9, 18, 0.68);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: grid;
  place-items: center;
  padding: 26px;
  z-index: 50;
}

.panel {
  position: relative;
  background: linear-gradient(180deg, #1a2038, #12172a);
  border: 1px solid var(--card-border);
  border-radius: 28px;
  padding: 30px 26px 26px;
  width: 100%;
  max-width: 340px;
  text-align: center;
  animation: rise .28s ease;
  max-height: 90dvh;
  overflow-y: auto;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(16px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.panel h2 { font-size: 17px; font-weight: 600; margin-bottom: 18px; letter-spacing: 1px; }
.panel canvas { display: block; margin: 0 auto; max-width: 100%; }

#caption-input {
  width: 100%;
  margin-top: 20px;
  padding: 13px 16px;
  border-radius: 16px;
  border: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color .2s ease;
}
#caption-input:focus { border-color: rgba(124, 107, 255, 0.55); }
#caption-input::placeholder { color: var(--muted); }

.panel-actions { display: flex; gap: 12px; margin-top: 20px; }

.btn {
  flex: 1;
  padding: 14px;
  border-radius: 16px;
  border: none;
  font-size: 15px;
  cursor: pointer;
  touch-action: manipulation;
  transition: opacity .15s ease, transform .1s ease;
}
.btn:active { transform: scale(.97); }
.btn.primary {
  background: var(--accent);
  color: #fff; font-weight: 500;
  box-shadow: 0 6px 20px rgba(124, 107, 255, 0.32);
}
.btn.ghost { background: rgba(255,255,255,.06); color: var(--muted); }
.btn.danger { width: 100%; margin-top: 18px; background: rgba(224,85,107,.14); color: #f08a99; border-radius: 16px; }

.close-x {
  position: absolute;
  top: 10px; right: 16px;
  background: none; border: none;
  color: var(--muted);
  font-size: 26px; line-height: 1;
  cursor: pointer;
}

#detail-caption { font-size: 16px; margin-top: 18px; min-height: 1.2em; }
#detail-meta { color: var(--muted); font-size: 12px; margin-top: 8px; }
#detail-audio { width: 100%; margin-top: 20px; }

/* ===== Toast ===== */
#toast {
  position: fixed;
  left: 50%; bottom: 48px;
  transform: translateX(-50%) translateY(20px);
  background: rgba(255,255,255,.92);
  color: #14182a;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease, transform .25s ease;
  z-index: 99;
  white-space: nowrap;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.hidden { display: none !important; }