/* ============================================================
   浮光剧场 · Reader
   ============================================================ */

/* === Reader Shell === */
.reader-shell {
  position: relative; min-width: 0; min-height: 0; height: 100%;
  overflow: hidden; display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  background: var(--bg-base);
}
[data-theme="light"] .reader-shell {
  background: var(--bg-base);
}

/* === Reader Header === */
.reader-header {
  position: absolute; z-index: 12;
  inset: max(12px, env(safe-area-inset-top)) 14px auto;
  display: flex; align-items: flex-start; justify-content: space-between; gap: 12px;
  pointer-events: none;
}

.header-bubble {
  display: flex; align-items: center; height: 46px; min-height: 46px;
  padding: 5px 6px;
  border-radius: var(--radius-pill);
  background: var(--glass-bg-thick);
  backdrop-filter: var(--material-blur);
  -webkit-backdrop-filter: var(--material-blur);
  box-shadow: var(--shadow-float),
    inset 0 1px 0 var(--glass-highlight),
    inset 0 -0.5px 0 rgba(0,0,0,0.12);
  border: 1px solid var(--glass-border);
  pointer-events: auto;
  transition: all .25s var(--ease-fluid);
}
.header-bubble::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow: var(--glass-edge-shadow);
}

.header-bubble-left {
  min-width: 0; max-width: min(52vw, 460px);
  padding: 4px 12px;
}
.header-bubble-left .icon-btn { color: var(--text-primary); }

.title-block { display: grid; gap: 0; flex: 1; min-width: 0; }
.title-block .story-title {
  display: block;
  font-size: 16px; line-height: 22px; font-weight: 600;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.title-block .story-meta { color: var(--text-secondary); font-size: 10px; line-height: 14px; font-weight: 500; }

.header-actions { display: flex; gap: 2px; padding: 3px 4px; }
.header-actions .icon-btn { color: var(--text-primary); }
.header-actions .icon-btn svg { stroke-width: 2; }

/* === Product Welcome === */
.welcome-mode .reader-header,
.welcome-mode .audio-float-btn,
.welcome-mode .player-bar,
.welcome-mode .composer,
.welcome-mode .controls-panel {
  display: none;
}
.welcome-mode .reader-viewport {
  padding-top: 40px;
  padding-bottom: 40px;
}

/* === Reader Viewport === */
.reader-viewport {
  position: relative; min-width: 0; min-height: 0; height: 100%;
  overflow: hidden auto; overscroll-behavior: contain;
  scroll-behavior: smooth;
  --segment-action-safe-space: 22px;
  --reader-bottom-space: calc(var(--composer-height, 204px) + 30px + var(--segment-action-safe-space));
  padding:
    76px
    max(24px, calc((100% - var(--reader-width)) / 2))
    var(--reader-bottom-space);
  transition: padding-bottom .32s var(--ease-fluid);
}
body.audio-panel-open .reader-viewport {
  --segment-action-safe-space: 44px;
  --reader-bottom-space: calc(var(--composer-height, 204px) + 94px + var(--segment-action-safe-space));
}

/* === Story Content === */
.story-content {
  width: min(100%, var(--reader-width)); min-height: 0;
  margin: 0 auto;
  font-family: "Iowan Old Style", "Songti SC", "Noto Serif SC", Georgia, serif;
  font-size: 18px; line-height: 2; letter-spacing: .02em;
  color: var(--text-primary);
}
.story-content ::selection {
  color: #fff;
  background: rgba(142,142,147,.38);
}
[data-theme="light"] .story-content ::selection {
  color: rgba(0,0,0,.9);
  background: rgba(94,104,120,.18);
}
.story-content p { margin: 0 0 1.3em; white-space: pre-wrap; }

.story-content .speech-block {
  margin-inline: -8px;
  padding-inline: 8px;
  border-radius: 10px;
  cursor: default;
  transition: background .2s var(--ease-out);
}
.story-content .speech-block.is-reading {
  background: rgba(120,120,128,.08);
}

.story-content .segment {
  position: relative;
  margin: 0 -14px;
  padding: 20px 14px;
  border-radius: var(--radius-md);
  transition: background .18s var(--ease-out), box-shadow .18s var(--ease-out);
}
.story-content .segment + .segment { margin-top: 0; }
.story-content .segment.actions-open {
  background: rgba(255,255,255,.075);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.09),
    inset 0 1px 0 rgba(255,255,255,.06);
}
[data-theme="light"] .story-content .segment.actions-open {
  background: rgba(118,118,128,.075);
  box-shadow:
    inset 0 0 0 1px rgba(60,60,67,.09),
    inset 0 1px 0 rgba(255,255,255,.72);
}
@media (hover: hover) and (pointer: fine) {
  .story-content .segment:hover {
    background: rgba(255,255,255,.075);
    box-shadow:
      inset 0 0 0 1px rgba(255,255,255,.09),
      inset 0 1px 0 rgba(255,255,255,.06);
  }
  [data-theme="light"] .story-content .segment:hover {
    background: rgba(118,118,128,.075);
    box-shadow:
      inset 0 0 0 1px rgba(60,60,67,.09),
      inset 0 1px 0 rgba(255,255,255,.72);
  }
}

/* Segment Actions */
.segment-actions {
  position: absolute; z-index: 4; top: 0; right: 4px;
  display: flex; gap: 2px; padding: 4px;
  border-radius: var(--radius-pill);
  background: var(--glass-bg-thick);
  backdrop-filter: blur(24px) saturate(200%);
  -webkit-backdrop-filter: blur(24px) saturate(200%);
  box-shadow: var(--shadow-float),
    0 5px 18px rgba(0,0,0,.12),
    inset 0 1px 0 var(--glass-highlight);
  border: 1px solid var(--glass-border);
  opacity: 0; visibility: hidden;
  transform: translateY(calc(-50% + 6px)) scale(0.95);
  transition: .2s var(--ease-spring);
}
.segment.actions-bottom .segment-actions {
  top: auto;
  bottom: 0;
  transform: translateY(calc(50% - 6px)) scale(0.95);
}
.segment.actions-open .segment-actions,
.segment:has([data-confirming="true"]) .segment-actions {
  opacity: 1; visibility: visible; transform: translateY(-50%);
}
.segment.actions-bottom.actions-open .segment-actions,
.segment.actions-bottom:has([data-confirming="true"]) .segment-actions {
  transform: translateY(50%);
}
@media (hover: hover) and (pointer: fine) {
  .segment:hover .segment-actions {
    opacity: 1; visibility: visible; transform: translateY(-50%);
  }
  .segment.actions-bottom:hover .segment-actions {
    transform: translateY(50%);
  }
}

.segment-action {
  display: grid; place-items: center; width: 30px; height: 30px;
  border-radius: var(--radius-pill);
  color: var(--text-secondary); background: transparent;
  transition: width .36s var(--ease-fluid), padding .36s var(--ease-fluid),
    background .24s, color .24s, transform .24s var(--ease-fluid);
}
.segment-action:hover { color: var(--text-primary); background: var(--glass-bg); }
.segment-action.danger:hover { color: var(--red); background: var(--red-glass); }
.segment-action.copy-failed { color: var(--red); }
.segment-action svg { width: 15px; height: 15px; }

.segment-action.confirming {
  width: 68px; min-width: 68px; padding: 0 12px;
  display: inline-flex; gap: 5px; align-items: center;
  color: #fff; background: var(--red);
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 8px rgba(255,69,58,0.3);
}
.segment-action.confirming:hover {
  color: #fff; background: var(--red); filter: brightness(1.1);
}

.story-content .segment.streaming::after {
  content: ""; display: inline-block; width: 5px; height: 1em;
  margin-left: 3px; vertical-align: -.1em;
  background: var(--accent);
  border-radius: 2px;
  animation: blink .8s infinite;
}

/* === Empty State === */
.empty-state {
  width: min(100%, 680px); min-height: 100%; margin: auto;
  display: grid; place-content: center; justify-items: start;
  transform: translateY(-2vh);
}
.empty-state.hidden { display: none; }

.empty-kicker {
  color: #69b7ff; font-size: 12px; font-weight: 650;
  letter-spacing: .12em; text-transform: uppercase;
}
.empty-state h1 {
  max-width: 520px; margin: 14px 0;
  font-family: Georgia, "Songti SC", serif;
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.13; font-weight: 520;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.empty-state p {
  max-width: 520px; color: var(--text-secondary);
  line-height: 1.75; font-size: 15px;
}

/* === Audio Float Button === */
.audio-float-btn {
  position: fixed; z-index: 10;
  top: calc(max(12px, env(safe-area-inset-top)) + 58px); right: 18px;
  display: grid; place-items: center; width: 44px; height: 44px;
  border-radius: var(--radius-pill);
  color: var(--text-secondary);
  background: var(--glass-bg-thick);
  backdrop-filter: var(--material-blur);
  -webkit-backdrop-filter: var(--material-blur);
  box-shadow: var(--shadow-float),
    inset 0 1px 0 var(--glass-highlight);
  border: 1px solid var(--glass-border);
  transition: all .2s var(--ease-fluid);
}
.audio-float-btn::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow: var(--glass-edge-shadow);
}
.audio-float-btn:hover,
.audio-float-btn.active {
  color: var(--blue);
  background: var(--glass-bg-thick);
  border-color: rgba(10,132,255,0.2);
}
.audio-float-btn:active { transform: scale(0.88); }
.audio-float-btn svg { width: 18px; height: 18px; }

/* === Player Bar === */
.player-bar {
  position: absolute; z-index: 11; left: 50%;
  bottom: calc(var(--composer-height, 152px) + 28px);
  width: min(calc(100% - 28px), 760px);
  display: grid; grid-template-columns: auto minmax(100px, 1fr) auto auto auto;
  align-items: center; gap: 8px;
  padding: 8px 6px 8px 12px;
  border-radius: var(--radius-pill);
  background: var(--glass-bg-thick);
  backdrop-filter: blur(24px) saturate(200%);
  -webkit-backdrop-filter: blur(24px) saturate(200%);
  box-shadow: var(--shadow-float),
    inset 0 1px 0 var(--glass-highlight),
    inset 0 -0.5px 0 rgba(0,0,0,0.12);
  border: 1px solid var(--glass-border);
  opacity: 0; visibility: hidden; pointer-events: none;
  transform: translate(-50%, 12px) scale(0.95);
  transition: .3s var(--ease-fluid);
}
.player-bar::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow: var(--glass-edge-shadow);
}
.player-bar.open {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translate(-50%, 0) scale(1);
}

.audio-close-btn {
  width: 30px; height: 30px;
  border: 1px solid var(--separator-light);
  border-radius: var(--radius-pill);
  transition: all .15s var(--ease-out);
}
.audio-close-btn:hover { border-color: var(--text-tertiary); background: rgba(255,255,255,.06); }

.playback-controls { display: flex; align-items: center; gap: 6px; }

.round-btn {
  display: grid; place-items: center; width: 32px; height: 32px;
  border-radius: var(--radius-pill); color: var(--text-primary);
  background: var(--glass-bg);
  transition: all .12s var(--ease-out);
}
.round-btn:active { transform: scale(0.88); }
.round-btn svg { width: 15px; height: 15px; stroke-width: 2.2; }

.primary-round {
  width: 38px; height: 38px;
  color: #ffffff; background: var(--blue);
  box-shadow: 0 2px 8px rgba(10,132,255,0.3);
}
.primary-round svg { width: 17px; height: 17px; }
.primary-round [data-lucide="play"] { transform: translateX(1px); }

@media (hover: hover) {
  .round-btn:hover { background: var(--glass-bg-thick); }
  .primary-round:hover { background: #4db4ff; }
}

.playback-status { min-width: 0; display: grid; gap: 6px; }
.playback-status strong {
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-size: 12px; font-weight: 500;
}

.progress-track {
  height: 3px; overflow: hidden; border-radius: 2px;
  background: var(--glass-bg);
}
.progress-track span {
  display: block; width: 0; height: 100%;
  background: var(--accent); border-radius: 2px;
  transition: width .2s;
}

.compact-field {
  display: flex; align-items: center; gap: 6px;
  color: var(--text-tertiary); font-size: 12px;
}

[data-theme="light"] .header-actions .icon-btn,
[data-theme="light"] .header-bubble-left .icon-btn,
[data-theme="light"] .audio-float-btn {
  color: rgba(0, 0, 0, .82);
}
[data-theme="light"] .header-actions .icon-btn:hover,
[data-theme="light"] .header-bubble-left .icon-btn:hover,
[data-theme="light"] .audio-float-btn:hover,
[data-theme="light"] .audio-float-btn.active {
  color: #000;
}