/* 喇叭 — 控制界面
   概念：颜色 = 喇叭是否在响。待机时整页无彩，只有正在广播时才出现唯一的朱红。 */

:root {
  --paper: #121614;
  --surface: #1A1F1C;
  --ink: #ECEFEA;
  --ink-soft: #9AA29C;
  --line: #2C332E;
  --live: #FF5A3D;
  --live-ink: #121614;
  --ink-hover: #DCE0D9;
  --live-hover: #FF7059;
  --slab-shadow: none;
  --slab-ring: 1px solid var(--line);
  color-scheme: dark;
}

:root.theme-light {
  --paper: #F0F1EE;
  --surface: #FFFFFF;
  --ink: #191C1A;
  --ink-soft: #5E645F;
  --line: #D9DBD6;
  --live: #C8321E;
  --live-ink: #FFFFFF;
  --ink-hover: #2E332F;
  --live-hover: #B02A18;
  --slab-shadow: 0 20px 44px -28px rgba(25, 28, 26, 0.45);
  --slab-ring: 1px solid transparent;
  color-scheme: light;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background: var(--paper);
  color: var(--ink);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  padding: max(22px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right))
           max(34px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* 正在广播时，页面顶端出现一条朱红横线 */
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--live);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s cubic-bezier(0.2, 0.7, 0.3, 1);
  z-index: 10;
}
body.is-live::before { transform: scaleX(1); }

.shell { max-width: 640px; margin: 0 auto; }

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

/* ---------- 页头 ---------- */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
}

.wordmark {
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  line-height: 1.1;
}

.top-actions { display: flex; align-items: center; gap: 12px; }

.live-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--line);
  transition: background-color 0.25s ease;
}
body.is-live .live-dot {
  background: var(--live);
  animation: breathe 1.8s ease-in-out infinite;
}
@keyframes breathe { 0%, 100% { opacity: 1; } 50% { opacity: 0.22; } }

.ghost-btn {
  font: inherit;
  font-size: 0.8125rem;
  color: var(--ink-soft);
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.ghost-btn:hover { color: var(--ink); border-color: var(--ink-soft); }
.ghost-btn.small { padding: 4px 12px; font-size: 0.75rem; }
.ghost-btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

/* ---------- 输入区（唯一有阴影的面） ---------- */

.slab {
  background: var(--surface);
  border: var(--slab-ring);
  border-radius: 20px;
  box-shadow: var(--slab-shadow);
  padding: 4px 4px 0;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}
.slab:focus-within { outline: 2px solid var(--ink); outline-offset: 3px; }

#text {
  display: block;
  width: 100%;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  font-size: 1.0625rem;
  line-height: 1.75;
  padding: 20px 18px 6px;
  resize: none;
  overflow: auto;
  max-height: 420px;
}
#text::placeholder { color: var(--ink-soft); opacity: 0.7; }
#text:focus { outline: none; }
#text.nudge { animation: nudge 0.5s ease; }
@keyframes nudge {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.slab-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px 14px;
  flex-wrap: wrap;
  padding: 6px 18px 14px;
}

.meta {
  font-size: 0.8125rem;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

.voice-pick { position: relative; display: inline-flex; align-items: center; min-width: 0; }

#voice {
  appearance: none;
  -webkit-appearance: none;
  font: inherit;
  font-size: 0.875rem;
  color: var(--ink);
  background: none;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  padding: 4px 22px 4px 0;
  max-width: 52vw;
  cursor: pointer;
  text-overflow: ellipsis;
  transition: border-color 0.18s ease;
}
#voice:hover { border-color: var(--ink-soft); }
#voice:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
#voice option { background: var(--surface); color: var(--ink); }

.voice-pick::after {
  content: "";
  position: absolute;
  right: 5px;
  top: 50%;
  width: 6px; height: 6px;
  border-right: 1.5px solid var(--ink-soft);
  border-bottom: 1.5px solid var(--ink-soft);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}

/* ---------- 循环与间隔 ---------- */

.loop-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin: 18px 2px 0;
}

.switch {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  cursor: pointer;
  user-select: none;
}
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }

.switch-track {
  position: relative;
  flex: none;
  width: 38px; height: 22px;
  border-radius: 999px;
  background: var(--line);
  transition: background-color 0.2s ease;
}
.switch-track::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--surface);
  transition: transform 0.2s ease;
}
.switch input:checked + .switch-track { background: var(--ink); }
.switch input:checked + .switch-track::after { transform: translateX(16px); }
.switch input:focus-visible + .switch-track { outline: 2px solid var(--ink); outline-offset: 2px; }

.interval { display: flex; align-items: center; gap: 12px; }
.interval[hidden] { display: none; }

#interval {
  appearance: none;
  -webkit-appearance: none;
  width: 118px;
  height: 22px;
  background: none;
  cursor: pointer;
}
#interval::-webkit-slider-runnable-track { height: 2px; background: var(--line); }
#interval::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  margin-top: -7px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--ink);
}
#interval::-moz-range-track { height: 2px; background: var(--line); }
#interval::-moz-range-thumb {
  width: 16px; height: 16px; border: 0;
  border-radius: 50%; background: var(--ink);
}
#interval:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; border-radius: 999px; }

#interval-out { min-width: 4.6em; }

/* ---------- 广播按钮：界面上唯一一件大事 ---------- */

.broadcast {
  display: block;
  width: 100%;
  margin-top: 22px;
  font: inherit;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--paper);
  background: var(--ink);
  border: 0;
  border-radius: 20px;
  padding: 20px 24px;
  cursor: pointer;
  transition: background-color 0.22s ease, color 0.22s ease, transform 0.1s ease;
}
.broadcast:hover { background: var(--ink-hover); }
.broadcast:active { transform: translateY(1px); }
.broadcast:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.broadcast:disabled { cursor: default; opacity: 0.55; }
.broadcast.is-stop { background: var(--live); color: var(--live-ink); }
.broadcast.is-stop:hover { background: var(--live-hover); }

/* ---------- 抽屉 ---------- */

.drawer { margin-top: 30px; border-top: 1px solid var(--line); }

.drawer-head {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 15px 0;
  font: inherit;
  color: inherit;
  text-align: left;
  background: none;
  border: 0;
  cursor: pointer;
}
.drawer-head:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

.drawer-title {
  flex: none;
  font-size: 0.9375rem;
  font-weight: 600;
  white-space: nowrap;
}
.drawer-meta {
  margin-right: auto;
  min-width: 0;
  font-size: 0.8125rem;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.caret {
  flex: none;
  width: 7px; height: 7px;
  border-right: 1.5px solid var(--ink-soft);
  border-bottom: 1.5px solid var(--ink-soft);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}
.drawer-head[aria-expanded="true"] .caret { transform: rotate(225deg); }

.drawer-body { display: none; padding-bottom: 14px; }
.drawer-body.open { display: block; }

body.is-live #status-text { color: var(--live); }

/* ---------- 语音列表 ---------- */

.rows { display: flex; flex-direction: column; }

.row {
  display: grid;
  gap: 2px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}
.row:first-child { border-top: 0; padding-top: 2px; }

.row-name {
  width: 100%;
  padding: 2px 0;
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ink);
  background: none;
  border: 0;
  border-radius: 4px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.row-name:hover { box-shadow: inset 0 -1px 0 var(--line); }
.row-name:focus { outline: none; box-shadow: inset 0 -1px 0 var(--ink); }

.row-meta {
  display: flex;
  gap: 12px;
  font-size: 0.75rem;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

.row-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.act {
  font: inherit;
  font-size: 0.75rem;
  color: var(--ink-soft);
  background: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 3px 10px;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.act:hover { color: var(--ink); border-color: var(--line); }
.act:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.act[data-act="play"] { color: var(--ink); }
.act.on { color: var(--ink); border-color: var(--ink); }
.act.danger { color: var(--live); border-color: var(--live); }

.confirm-text { font-size: 0.75rem; color: var(--ink-soft); }

.empty { padding: 4px 0 10px; font-size: 0.875rem; line-height: 1.7; color: var(--ink-soft); }

/* ---------- 日志 ---------- */

.logs {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 220px;
  overflow: auto;
  margin-bottom: 12px;
  padding-left: 12px;
  border-left: 1px solid var(--line);
  font-size: 0.8125rem;
  color: var(--ink-soft);
}
.log { display: flex; gap: 10px; }
.log-time { flex: none; opacity: 0.6; font-variant-numeric: tabular-nums; }
.log-ok { color: var(--ink); }
.log-err { color: var(--ink); font-weight: 600; }

/* ---------- 宽屏：抽屉变成右栏常显 ---------- */

@media (min-width: 1000px) {
  body { padding: 46px 40px 72px; }

  .shell {
    max-width: 1000px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 0 48px;
  }

  .top { grid-column: 1 / -1; margin-bottom: 34px; }
  .composer { grid-column: 1; grid-row: 2 / span 2; }

  #history { grid-column: 2; grid-row: 2; margin-top: 0; border-top: 0; }
  #history .drawer-head { padding-top: 0; }
  #status { grid-column: 2; grid-row: 3; margin-top: 24px; }

  .drawer-body { display: block; }
  .caret { display: none; }

  #text { min-height: 260px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}