:root {
  --ink: #0c1116;
  --ink-2: #111a21;
  --ivory: #f2ead9;
  --ivory-dim: #c9c1b0;
  --gold: #d8b56a;
  --gold-soft: #8c7448;
  --line: rgba(242, 234, 217, .14);
  --danger: #e08b7b;
  --radius: 18px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Songti SC", "Noto Serif SC", Georgia, serif;
  --sans: "Inter", "SF Pro Text", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ivory);
  background:
    radial-gradient(1100px 600px at 82% -10%, rgba(216, 181, 106, .10), transparent 60%),
    radial-gradient(900px 500px at 8% 10%, rgba(115, 158, 180, .10), transparent 55%),
    linear-gradient(160deg, #0b1116 0%, #0a0e12 55%, #0a0d10 100%);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

.starfield {
  position: fixed; inset: 0; pointer-events: none; opacity: .55;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(242,234,217,.65), transparent),
    radial-gradient(1px 1px at 70% 18%, rgba(242,234,217,.45), transparent),
    radial-gradient(1.5px 1.5px at 84% 62%, rgba(216,181,106,.55), transparent),
    radial-gradient(1px 1px at 42% 78%, rgba(242,234,217,.40), transparent),
    radial-gradient(1px 1px at 12% 70%, rgba(242,234,217,.35), transparent),
    radial-gradient(1.5px 1.5px at 58% 44%, rgba(216,181,106,.30), transparent);
}

.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 64px);
  background: rgba(10, 14, 18, .78);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; gap: 10px; align-items: center; color: var(--ivory); text-decoration: none; font-weight: 600; letter-spacing: .02em; }
.brand-mark { color: var(--gold); font-size: 1.2rem; }
.badge { font-size: 12px; letter-spacing: .08em; color: var(--ivory-dim); border: 1px solid var(--line); border-radius: 999px; padding: 5px 10px; }

.shell { width: min(1040px, calc(100% - 40px)); margin: 0 auto; padding: clamp(44px, 8vw, 92px) 0 60px; position: relative; }
.intro { max-width: 760px; margin-bottom: 40px; }
.eyebrow { margin: 0 0 16px; font-size: 11px; letter-spacing: .22em; color: var(--gold); font-weight: 600; }
h1 { margin: 0; font-family: var(--serif); font-weight: 500; font-size: clamp(44px, 8vw, 84px); line-height: 1.02; letter-spacing: -.015em; }
h1 em { color: var(--gold); font-style: italic; }
.lede { margin: 24px 0 0; max-width: 590px; color: var(--ivory-dim); font-size: 16px; line-height: 1.8; }

.card { border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(165deg, rgba(22,31,39,.92), rgba(13,19,24,.92)); box-shadow: 0 24px 80px rgba(0,0,0,.32); }
.composer { padding: clamp(20px, 3.5vw, 32px); }
.field-label { display: block; font-family: var(--serif); font-size: 20px; margin-bottom: 14px; }
textarea {
  width: 100%; resize: vertical; min-height: 132px;
  color: var(--ivory); background: rgba(8, 12, 15, .58);
  border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px;
  font: 400 15px/1.75 var(--sans);
}
textarea:focus, input:focus { outline: none; border-color: rgba(216,181,106,.68); box-shadow: 0 0 0 3px rgba(216,181,106,.10); }
.composer-foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 16px; flex-wrap: wrap; }
.hint { color: var(--ivory-dim); font-size: 12px; }
.muted { color: var(--ivory-dim); }
button, .button {
  border: 1px solid transparent; border-radius: 999px; cursor: pointer;
  padding: 12px 22px; font: 600 14px/1 var(--sans); letter-spacing: .02em;
  transition: transform .18s ease, background .18s ease, border-color .18s ease, opacity .18s ease;
  text-decoration: none;
}
button:hover, .button:hover { transform: translateY(-1px); }
.primary { color: #101314; background: var(--gold); }
.primary:disabled { opacity: .55; cursor: wait; transform: none; }
.button { display: inline-flex; align-items: center; justify-content: center; color: var(--ivory); border-color: var(--line); background: rgba(242,234,217,.04); }
.button.ghost { background: transparent; }
.button.small { padding: 10px 16px; font-size: 13px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }

.status { min-height: 20px; margin: 16px 0 0; font-size: 13px; color: var(--ivory-dim); }
.status.error { color: var(--danger); }
.status.busy::after { content: ""; display: inline-block; width: 7px; height: 7px; margin-left: 8px; border-radius: 50%; background: var(--gold); animation: pulse 1s infinite; }
@keyframes pulse { 0%,100% { opacity: .25; } 50% { opacity: 1; } }

.result { margin-top: 20px; padding: clamp(20px, 3.5vw, 32px); }
.result-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
h2 { margin: 0 0 6px; font-family: var(--serif); font-size: clamp(24px, 3vw, 32px); font-weight: 500; }
#meta { margin: 0; font-size: 13px; }
.quota { flex: 0 0 auto; font-size: 12px; color: var(--gold); border: 1px solid var(--gold-soft); border-radius: 999px; padding: 6px 10px; }
audio { width: 100%; margin-top: 22px; filter: sepia(.12) saturate(.85); }

.edit-box { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 18px; }
.edit-box summary { cursor: pointer; color: var(--ivory); font-family: var(--serif); font-size: 18px; }
.edit-grid { display: grid; grid-template-columns: 90px 1fr auto; gap: 10px; margin: 14px 0 8px; }
.edit-grid input { min-width: 0; color: var(--ivory); background: rgba(8,12,15,.6); border: 1px solid var(--line); border-radius: 10px; padding: 11px 12px; font: 400 13px var(--sans); }

.history { margin-top: 48px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.section-head h2 { font-size: 22px; }
.history-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; margin-top: 16px; }
.history-item { width: 100%; text-align: left; color: var(--ivory); background: rgba(242,234,217,.035); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; }
.history-item:hover { border-color: rgba(216,181,106,.5); }
.history-item strong { display: block; font-family: var(--serif); font-weight: 500; font-size: 17px; margin-bottom: 6px; }
.history-item span { font-size: 12px; color: var(--ivory-dim); }

.footer { border-top: 1px solid var(--line); padding: 28px clamp(20px, 5vw, 64px) 40px; font-size: 12px; line-height: 1.7; }
.footer p { margin: 4px 0; }

@media (max-width: 720px) {
  .result-head { flex-direction: column; }
  .edit-grid { grid-template-columns: 70px 1fr; }
  .edit-grid .button { grid-column: 1 / -1; }
  .badge { display: none; }
}