/* ==========================================================================
   GPT 实时语音 · 视觉系统
   浅色/深色双主题，令牌集中在 :root，画面元素只引用令牌。
   ========================================================================== */

:root {
  color-scheme: light;

  --bg: #eff2f9;
  --bg-tint-a: rgba(79, 132, 255, 0.28);
  --bg-tint-b: rgba(0, 197, 214, 0.22);
  --bg-tint-c: rgba(150, 120, 255, 0.2);

  --surface: rgba(255, 255, 255, 0.72);
  --surface-strong: #ffffff;
  --surface-soft: rgba(255, 255, 255, 0.5);
  --surface-sunken: rgba(16, 21, 39, 0.04);

  --ink: #10152a;
  --ink-soft: #39415c;
  --muted: #6d7690;

  --line: rgba(16, 21, 39, 0.1);
  --line-strong: rgba(16, 21, 39, 0.18);

  --accent: #2f6bff;
  --accent-ink: #ffffff;
  --accent-soft: rgba(47, 107, 255, 0.12);
  --success: #0d9b6c;
  --warning: #b8720b;
  --danger: #d63a2f;

  --shadow-lg: 0 32px 80px rgba(16, 21, 39, 0.16);
  --shadow-md: 0 12px 32px rgba(16, 21, 39, 0.1);
  --shadow-sm: 0 2px 10px rgba(16, 21, 39, 0.06);

  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 11px;

  --blur: saturate(180%) blur(20px);
  --ease: cubic-bezier(0.22, 0.68, 0.32, 1);

  --orb-stop-0: #d8f3ff;
  --orb-stop-1: #6cc9f7;
  --orb-stop-2: #1f83e6;
  --orb-stop-3: #0a4fc4;
  --orb-deep-rgb: 0, 86, 236;
  --orb-wash-a-rgb: 47, 183, 255;
  --orb-wash-b-rgb: 0, 112, 239;
  --orb-cloud-a-rgb: 232, 249, 255;
  --orb-cloud-b-rgb: 121, 213, 255;
  --orb-cloud-c-rgb: 87, 190, 255;
  --orb-highlight-rgb: 245, 252, 255;
  --orb-rim: rgba(255, 255, 255, 0.55);
  --orb-glow: rgba(47, 140, 255, 0.34);
}

:root[data-theme="dark"] {
  color-scheme: dark;

  --bg: #070a13;
  --bg-tint-a: rgba(46, 106, 255, 0.32);
  --bg-tint-b: rgba(0, 176, 208, 0.22);
  --bg-tint-c: rgba(126, 86, 255, 0.24);

  --surface: rgba(22, 28, 45, 0.68);
  --surface-strong: #131828;
  --surface-soft: rgba(30, 38, 58, 0.5);
  --surface-sunken: rgba(255, 255, 255, 0.05);

  --ink: #eef2fc;
  --ink-soft: #c3cbe0;
  --muted: #8e99b5;

  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.2);

  --accent: #5b8bff;
  --accent-ink: #05122e;
  --accent-soft: rgba(91, 139, 255, 0.18);
  --success: #2bd39a;
  --warning: #eab308;
  --danger: #ff6b5e;

  --shadow-lg: 0 32px 90px rgba(0, 0, 0, 0.6);
  --shadow-md: 0 14px 36px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.35);

  --orb-stop-0: #a7e9ff;
  --orb-stop-1: #3ea8ef;
  --orb-stop-2: #1350c8;
  --orb-stop-3: #071f5e;
  --orb-deep-rgb: 4, 20, 86;
  --orb-wash-a-rgb: 88, 214, 255;
  --orb-wash-b-rgb: 30, 110, 255;
  --orb-cloud-a-rgb: 214, 245, 255;
  --orb-cloud-b-rgb: 86, 180, 255;
  --orb-cloud-c-rgb: 40, 120, 235;
  --orb-highlight-rgb: 226, 246, 255;
  --orb-rim: rgba(180, 225, 255, 0.32);
  --orb-glow: rgba(40, 120, 255, 0.42);
}

/* 脚本执行前也保持正确的主题，避免首屏闪白。 */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --bg: #070a13;
    --surface: rgba(22, 28, 45, 0.68);
    --surface-strong: #131828;
    --surface-soft: rgba(30, 38, 58, 0.5);
    --surface-sunken: rgba(255, 255, 255, 0.05);
    --ink: #eef2fc;
    --ink-soft: #c3cbe0;
    --muted: #8e99b5;
    --line: rgba(255, 255, 255, 0.1);
    --line-strong: rgba(255, 255, 255, 0.2);
    --accent: #5b8bff;
    --accent-ink: #05122e;
    --accent-soft: rgba(91, 139, 255, 0.18);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select,
progress {
  font: inherit;
  color: inherit;
}

button,
select,
input[type="range"],
summary {
  cursor: pointer;
}

button {
  border: 0;
  background: none;
}

button:disabled,
input:disabled,
select:disabled {
  cursor: not-allowed;
  opacity: 0.4;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 650;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------- 背景 ---------- */

.aurora {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.aurora-blob {
  position: absolute;
  display: block;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.85;
  animation: drift 26s var(--ease) infinite alternate;
}

.aurora-a {
  width: 46vmax;
  height: 46vmax;
  top: -14vmax;
  left: -10vmax;
  background: var(--bg-tint-a);
}

.aurora-b {
  width: 38vmax;
  height: 38vmax;
  right: -12vmax;
  top: 12vmax;
  background: var(--bg-tint-b);
  animation-delay: -8s;
}

.aurora-c {
  width: 42vmax;
  height: 42vmax;
  bottom: -18vmax;
  left: 24vmax;
  background: var(--bg-tint-c);
  animation-delay: -16s;
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(4vmax, -3vmax, 0) scale(1.12);
  }
}

/* ---------- 布局骨架 ----------
   窄屏：单列，语音与记录共用同一区域，由顶部的视图切换决定显示哪一个。
   宽屏：左列是语音球和输入框，右列是整列聊天记录。
   输入框永远独占底部一行，上方内容（字幕、建议按钮）的增减不会推动它。 */

.app {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  grid-template-areas:
    "topbar"
    "switch"
    "stage"
    "dock";
  height: 100dvh;
  padding: 14px clamp(14px, 3vw, 30px) calc(10px + env(safe-area-inset-bottom));
  gap: 12px;
}

.topbar {
  grid-area: topbar;
}

.view-switch {
  grid-area: switch;
}

.stage-visual,
.stage-transcript {
  grid-area: stage;
  min-height: 0;
}

.dock {
  grid-area: dock;
}

@media (min-width: 980px) {
  .app {
    grid-template-columns: minmax(0, 1fr) clamp(300px, 28vw, 420px);
    grid-template-rows: auto minmax(0, 1fr) auto;
    grid-template-areas:
      "topbar topbar"
      "stage  chat"
      "dock   chat";
    column-gap: clamp(12px, 2vw, 24px);
  }

  .stage-transcript {
    grid-area: chat;
  }

  .topbar-actions .transcript-toggle {
    display: inline-grid;
  }

  .app[data-transcript="collapsed"] {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "topbar"
      "stage"
      "dock";
  }

  .app[data-transcript="collapsed"] .stage-transcript {
    display: none;
  }
}

.app[inert] {
  filter: blur(1.5px);
}

/* ---------- 顶栏 ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  box-shadow: var(--shadow-sm);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 10px;
  background: conic-gradient(from 140deg, var(--orb-stop-1), var(--orb-stop-3), var(--orb-stop-1));
  box-shadow: 0 6px 16px var(--orb-glow);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  min-width: 0;
}

.brand-text strong {
  font-size: 14px;
  font-weight: 650;
}

.brand-text small {
  font-size: 11px;
  color: var(--muted);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-inline: auto;
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  font-size: 12.5px;
  color: var(--ink-soft);
  white-space: nowrap;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--muted);
}

.status-chip[data-phase="connecting"] .status-dot {
  background: var(--warning);
  animation: pulse 1.4s ease-in-out infinite;
}

.status-chip[data-phase="listening"] .status-dot,
.status-chip[data-phase="text"] .status-dot {
  background: var(--success);
}

.status-chip[data-phase="thinking"] .status-dot {
  background: var(--accent);
  animation: pulse 1.1s ease-in-out infinite;
}

.status-chip[data-phase="speaking"] .status-dot {
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.status-chip[data-phase="error"] .status-dot {
  background: var(--danger);
}

@keyframes pulse {
  50% {
    opacity: 0.35;
  }
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pool-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 100px;
  height: 38px;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--ink-soft);
}

.pool-pill[hidden] {
  display: none;
}

.pool-pill svg {
  width: 16px;
  height: 16px;
  flex: none;
  color: var(--accent);
}

.pool-pill > span {
  display: flex;
  min-width: 0;
  flex-direction: column;
  line-height: 1.05;
}

.pool-pill small,
.pool-pill strong {
  max-width: 110px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pool-pill small {
  font-size: 9.5px;
  color: var(--muted);
}

.pool-pill strong {
  margin-top: 2px;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.icon-button {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 13px;
  border: 1px solid transparent;
  color: var(--ink-soft);
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.icon-button:hover:not(:disabled) {
  background: var(--surface-sunken);
  color: var(--ink);
  border-color: var(--line);
}

.icon-button svg {
  width: 19px;
  height: 19px;
}

.transcript-toggle {
  display: none;
}

.transcript-toggle.is-selected {
  border-color: var(--line);
  background: var(--accent-soft);
  color: var(--accent);
}

.icon-slot {
  display: inline-grid;
  place-items: center;
}

/* 用量胶囊：外圈是预算进度环 */
.usage-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 14px 6px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.usage-pill:hover {
  border-color: var(--line-strong);
}

.usage-ring {
  --ring-color: var(--accent);
  width: 22px;
  height: 22px;
  flex: none;
  border-radius: 50%;
  background: conic-gradient(
    var(--ring-color) var(--budget-used, 0%),
    var(--surface-sunken) 0
  );
  mask: radial-gradient(circle, transparent 54%, #000 56%);
  -webkit-mask: radial-gradient(circle, transparent 54%, #000 56%);
}

.usage-pill[data-level="warning"] .usage-ring {
  --ring-color: var(--warning);
}

.usage-pill[data-level="over"] .usage-ring {
  --ring-color: var(--danger);
}

.usage-figures {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.15;
}

.usage-figures strong {
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.usage-figures small {
  font-size: 10.5px;
  color: var(--muted);
}

/* ---------- 视图切换（窄屏） ---------- */

.view-switch {
  display: none;
  gap: 4px;
  padding: 4px;
  margin-inline: auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
}

.view-switch button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--muted);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.view-switch button svg {
  width: 15px;
  height: 15px;
}

.view-switch button.is-selected {
  background: var(--accent);
  color: var(--accent-ink);
}

/* ---------- 舞台 ---------- */

.stage-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(12px, 2.4vh, 26px);
  padding: 8px;
  text-align: center;
  /* 内容再多也不会溢出到输入框那一行。 */
  overflow: hidden;
}

.orb-dock {
  display: grid;
  place-items: center;
  width: min(46vh, 320px);
  height: min(46vh, 320px);
  flex: none;
}

.voice-visual {
  position: relative;
  width: 100%;
  height: 100%;
  transform: scale(var(--orb-scale, 1));
  filter: brightness(var(--orb-brightness, 1)) saturate(var(--orb-saturation, 1));
  transition: transform 0.16s var(--ease);
}

.voice-visual::after {
  content: "";
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  box-shadow: 0 26px 70px var(--orb-glow);
  z-index: -1;
}

#voiceCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

.stage-copy {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 34ch;
}

.stage-eyebrow {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.stage-title {
  font-size: clamp(21px, 3.2vw, 29px);
  line-height: 1.25;
  text-wrap: balance;
}

.stage-description {
  font-size: 13.5px;
  color: var(--muted);
}

.live-caption {
  max-width: 52ch;
  padding: 11px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  box-shadow: var(--shadow-sm);
  font-size: 14.5px;
  line-height: 1.6;
  max-height: 5.4em;
  overflow: hidden;
}

.suggestions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.suggestions button {
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  font-size: 12.5px;
  color: var(--ink-soft);
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.suggestions button:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- 对话记录 ---------- */

.stage-transcript {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.transcript-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--muted);
}

.transcript-head svg {
  width: 15px;
  height: 15px;
}

.conversation {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.empty-transcript {
  margin: auto;
  padding: 20px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

.message {
  display: flex;
  flex-direction: column;
  gap: 5px;
  max-width: 92%;
  padding: 11px 15px;
  border-radius: var(--radius-lg);
  animation: message-in 0.24s var(--ease);
}

@keyframes message-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
}

.message-role {
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.message-text {
  font-size: 14px;
  line-height: 1.65;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.message-user {
  align-self: flex-end;
  background: var(--accent);
  color: var(--accent-ink);
  border-bottom-right-radius: 6px;
}

.message-user .message-role {
  color: color-mix(in srgb, var(--accent-ink) 70%, transparent);
}

.message-assistant {
  align-self: flex-start;
  border: 1px solid var(--line);
  background: var(--surface-strong);
  border-bottom-left-radius: 6px;
}

.message-system {
  align-self: center;
  max-width: 100%;
  padding: 8px 14px;
  border: 1px dashed var(--line-strong);
  background: transparent;
  color: var(--muted);
  text-align: center;
}

.message-system .message-role {
  display: none;
}

.message-system .message-text {
  font-size: 12.5px;
}

/* ---------- 底部控制 ---------- */

.dock {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
}

.composer {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  max-width: 760px;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  box-shadow: var(--shadow-md);
}

.composer-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 15px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
  color: var(--ink-soft);
  transition: background 0.18s var(--ease), color 0.18s var(--ease), transform 0.18s var(--ease);
}

.composer-icon:hover:not(:disabled) {
  background: var(--surface-sunken);
  color: var(--ink);
}

.composer-icon:active:not(:disabled) {
  transform: scale(0.95);
}

.composer-icon svg {
  width: 19px;
  height: 19px;
}

.composer-icon[aria-pressed="true"] {
  border-color: var(--danger);
  color: var(--danger);
}

.input-shell {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
}

.input-shell input {
  width: 100%;
  height: 42px;
  padding: 0 46px 0 16px;
  border: 1px solid transparent;
  border-radius: 15px;
  background: var(--surface-sunken);
  color: var(--ink);
  font-size: 14.5px;
  transition: border-color 0.18s var(--ease);
}

.input-shell input::placeholder {
  color: var(--muted);
}

.input-shell input:focus {
  border-color: var(--accent);
  outline: none;
}

/* `button:disabled { opacity: .4 }` would otherwise out-specify the hidden state. */
.send-button,
.send-button:disabled {
  position: absolute;
  right: 6px;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 11px;
  background: var(--accent);
  color: var(--accent-ink);
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
  transition: opacity 0.16s var(--ease), transform 0.16s var(--ease);
}

.send-button svg {
  width: 17px;
  height: 17px;
}

.send-button.is-visible,
.send-button.is-visible:disabled {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.call-control {
  display: grid;
  place-items: center;
  width: 54px;
  height: 42px;
  flex: none;
  border-radius: 15px;
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 8px 22px var(--accent-soft);
  transition: background 0.2s var(--ease), transform 0.16s var(--ease);
}

.call-control:hover:not(:disabled) {
  transform: translateY(-1px);
}

.call-control.is-active {
  background: var(--danger);
  color: #fff;
}

.call-control svg {
  width: 20px;
  height: 20px;
}

.connection-meta {
  font-size: 11.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* ---------- 面板 ---------- */

.panel-scrim {
  position: fixed;
  inset: 0;
  z-index: 20;
  border: 0;
  background: rgba(6, 9, 18, 0.4);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  animation: fade-in 0.2s var(--ease);
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
}

.side-panel {
  position: fixed;
  z-index: 21;
  top: 12px;
  right: 12px;
  bottom: 12px;
  width: min(420px, calc(100vw - 24px));
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface-strong);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateX(18px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease), visibility 0.24s;
}

.side-panel.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--line);
}

.panel-kicker {
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.panel-header h2 {
  font-size: 17px;
}

.panel-actions {
  display: flex;
  gap: 6px;
}

.panel-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 16px 18px 24px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.panel-note {
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--muted);
}

.card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-soft);
}

.card h3 {
  font-size: 13.5px;
}

.row-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
}

.muted-row {
  font-size: 11.5px;
  color: var(--muted);
}

.usage-hero {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, var(--accent-soft), transparent 70%), var(--surface-soft);
  border: 1px solid var(--line);
}

.usage-hero strong {
  font-size: 32px;
  font-weight: 620;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.usage-hero p {
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--muted);
}

.usage-mode {
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--surface-sunken);
  font-size: 11px;
  color: var(--muted);
}

.usage-mode.is-exact {
  background: color-mix(in srgb, var(--success) 16%, transparent);
  color: var(--success);
}

.usage-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 13px;
}

.usage-row > span:last-child {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  font-variant-numeric: tabular-nums;
}

.usage-row small {
  font-size: 11px;
  color: var(--muted);
}

.budget-input-label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-strong);
  font-size: 12.5px;
  color: var(--muted);
}

.budget-input-label input {
  width: 74px;
  border: 0;
  background: none;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.budget-input-label input:focus {
  outline: none;
}

progress {
  width: 100%;
  height: 7px;
  appearance: none;
  border: 0;
  border-radius: 999px;
  background: var(--surface-sunken);
  overflow: hidden;
}

progress::-webkit-progress-bar {
  background: var(--surface-sunken);
}

progress::-webkit-progress-value {
  background: var(--accent);
  transition: width 0.3s var(--ease);
}

progress::-moz-progress-bar {
  background: var(--accent);
}

.budget-section.is-warning progress::-webkit-progress-value {
  background: var(--warning);
}

.budget-section.is-warning progress::-moz-progress-bar {
  background: var(--warning);
}

.budget-section.is-over progress::-webkit-progress-value {
  background: var(--danger);
}

.budget-section.is-over progress::-moz-progress-bar {
  background: var(--danger);
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 12.5px;
  color: var(--ink-soft);
  cursor: pointer;
}

.toggle-row input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.usage-warning {
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--warning) 14%, transparent);
  color: var(--warning);
  font-size: 12px;
}

.budget-section.is-over .usage-warning {
  background: color-mix(in srgb, var(--danger) 14%, transparent);
  color: var(--danger);
}

.setting-row,
.setting-range,
.setting-input {
  display: flex;
  gap: 12px;
  font-size: 13px;
}

.setting-row {
  align-items: center;
  justify-content: space-between;
}

.setting-row > span,
.setting-range > span {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.setting-row small,
.setting-range output {
  font-size: 11px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.setting-range,
.setting-input {
  flex-direction: column;
  gap: 8px;
}

.setting-range > span {
  flex-direction: row;
  align-items: baseline;
  justify-content: space-between;
}

select,
.setting-input input {
  min-width: 132px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
  color: var(--ink);
}

.setting-input input {
  width: 100%;
}

input[type="range"] {
  width: 100%;
  height: 4px;
  appearance: none;
  border-radius: 999px;
  background: var(--surface-sunken);
  accent-color: var(--accent);
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: var(--shadow-sm);
}

.text-button {
  align-self: flex-start;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-strong);
  font-size: 12.5px;
  color: var(--ink-soft);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.text-button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.session-details {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin: 0;
}

.session-details > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12.5px;
}

.session-details dt {
  color: var(--muted);
}

.session-details dd {
  margin: 0;
  max-width: 62%;
  overflow-wrap: anywhere;
  text-align: right;
}

.diagnostics {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-soft);
  overflow: hidden;
}

.diagnostics summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 16px;
  font-size: 13px;
  list-style: none;
}

.diagnostics summary::-webkit-details-marker {
  display: none;
}

.diagnostics summary span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.diagnostics summary svg {
  width: 15px;
  height: 15px;
  color: var(--muted);
}

.diagnostics[open] .chevron {
  transform: rotate(180deg);
}

.diagnostic-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px 10px;
  font-size: 11.5px;
  color: var(--muted);
}

#events {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 240px;
  margin: 0;
  padding: 0 16px 16px;
  list-style: none;
  overflow-y: auto;
  font-size: 11.5px;
}

#events li {
  display: flex;
  gap: 10px;
  color: var(--ink-soft);
}

#events time {
  flex: none;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

#events span {
  overflow-wrap: anywhere;
}

/* ---------- 提示 ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(96px + env(safe-area-inset-bottom));
  z-index: 30;
  transform: translateX(-50%);
  max-width: min(88vw, 460px);
  padding: 11px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-strong);
  box-shadow: var(--shadow-md);
  font-size: 13px;
  text-align: center;
  animation: toast-in 0.24s var(--ease);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translate(-50%, 8px);
  }
}

.toast[data-tone="success"] {
  border-color: color-mix(in srgb, var(--success) 45%, transparent);
}

.toast[data-tone="warning"] {
  border-color: color-mix(in srgb, var(--warning) 45%, transparent);
}

.toast[data-tone="error"] {
  border-color: color-mix(in srgb, var(--danger) 45%, transparent);
}

/* ---------- 工具提示 ---------- */

[data-tooltip] {
  position: relative;
}

@media (hover: hover) {
  [data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    padding: 5px 10px;
    border-radius: 8px;
    background: var(--ink);
    color: var(--bg);
    font-size: 11px;
    white-space: nowrap;
    pointer-events: none;
    z-index: 5;
  }

  .composer [data-tooltip]:hover::after {
    bottom: calc(100% + 10px);
  }
}

/* ---------- 响应式 ---------- */

@media (max-width: 979px) {
  .app {
    gap: 10px;
  }

  .view-switch {
    display: inline-flex;
  }

  .stage-visual,
  .stage-transcript {
    transition: opacity 0.26s var(--ease), transform 0.26s var(--ease), visibility 0.26s;
  }

  .app[data-view="stage"] .stage-transcript {
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
  }

  .app[data-view="chat"] .stage-visual {
    opacity: 0;
    visibility: hidden;
    transform: scale(0.96);
  }

  .side-panel {
    top: auto;
    right: 0;
    left: 0;
    bottom: 0;
    width: 100%;
    max-height: 88dvh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    transform: translateY(24px);
  }
}

@media (max-width: 700px) {
  .brand-text {
    display: none;
  }

  .status-chip {
    font-size: 12px;
    padding: 5px 11px;
  }

  .pool-pill {
    min-width: 0;
    width: 38px;
    padding: 0;
    justify-content: center;
  }

  .pool-pill > span {
    display: none;
  }

  .orb-dock {
    width: min(38vh, 240px);
    height: min(38vh, 240px);
  }

  .suggestions button:nth-child(n + 3) {
    display: none;
  }
}

@media (max-width: 420px) {
  .app {
    padding-inline: 10px;
  }

  .usage-figures small {
    display: none;
  }

  .composer {
    gap: 6px;
    padding: 7px;
  }

  .call-control {
    width: 48px;
  }
}

@media (max-height: 660px) {
  .orb-dock {
    width: min(30vh, 190px);
    height: min(30vh, 190px);
  }

  .suggestions {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}