@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600&display=swap');

/* ============================================================
   Liquid Glass Theme — 苹果液态玻璃风格
   仅样式重构，类名与布局保持不变
   ============================================================ */

:root {
  --text: rgba(18, 22, 30, 0.92);
  --muted: rgba(18, 22, 30, 0.58);
  --faint: rgba(18, 22, 30, 0.10);

  /* 玻璃表面 */
  --glass: rgba(255, 255, 255, 0.55);
  --glass2: rgba(255, 255, 255, 0.22);
  --glass-strong: rgba(255, 255, 255, 0.72);

  /* 描边 / 高光 */
  --stroke: rgba(255, 255, 255, 0.55);
  --stroke2: rgba(18, 22, 30, 0.06);
  --edge-hi: rgba(255, 255, 255, 0.85);
  --edge-lo: rgba(18, 22, 30, 0.06);

  /* 阴影 */
  --shadow: 0 20px 50px rgba(28, 40, 70, 0.16);
  --shadow-lg: 0 30px 70px rgba(28, 40, 70, 0.22);

  --accent: #2d7dff;
  --accent2: #7a5cff;
  --danger: #ff375f;

  /* 玻璃材质：模糊 + 饱和度提升（液态玻璃核心） */
  --blur: blur(28px) saturate(200%) brightness(1.06);

  color-scheme: light;
  font: 15.5px/1.55 ui-sans-serif, -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'SF Pro Display', system-ui,
    'IBM Plex Sans', Segoe UI, sans-serif;
  color: var(--text);
}

* {
  box-sizing: border-box;
}


/* ---------- 动态彩色环境光背景（玻璃后的光源） ---------- */
body {
  margin: 0;
  min-height: 100vh;
  background: #eef1f7;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: -20vmax;
  z-index: -2;
  background:
    radial-gradient(42vmax 42vmax at 12% 18%, rgba(45, 125, 255, 0.40), transparent 60%),
    radial-gradient(38vmax 38vmax at 88% 12%, rgba(122, 92, 255, 0.38), transparent 60%),
    radial-gradient(46vmax 46vmax at 78% 88%, rgba(255, 99, 160, 0.32), transparent 60%),
    radial-gradient(40vmax 40vmax at 18% 92%, rgba(64, 212, 255, 0.30), transparent 60%);
  filter: blur(20px);
  animation: bgFloat 24s ease-in-out infinite alternate;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.30), transparent 55%);
  pointer-events: none;
}

@keyframes bgFloat {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(2vmax, -2vmax, 0) scale(1.08); }
  100% { transform: translate3d(-2vmax, 2vmax, 0) scale(1.04); }
}

#app {
  position: relative;
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 18px 44px;
}

/* ---------- 液态玻璃通用材质 ---------- */
.topbar,
.card,
.msg,
table,
input,
select,
textarea,
button,
.nav a,
.slot-chip,
.appt-item {
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
}

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border: 1px solid var(--stroke);
  background: linear-gradient(135deg, var(--glass), var(--glass2));
  border-radius: 22px;
  box-shadow: var(--shadow),
    inset 0 1px 0 var(--edge-hi),
    inset 0 -1px 0 var(--edge-lo);
  position: relative;
  overflow: hidden;
}

/* 玻璃顶部高光弧 */
.topbar::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 20% -10%, rgba(255, 255, 255, 0.65), transparent 55%),
    radial-gradient(90% 70% at 95% 0%, rgba(122, 92, 255, 0.16), transparent 60%);
  opacity: 0.9;
}

.topbar .left {
  display: flex;
  gap: 14px;
  align-items: baseline;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.topbar .right {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.brand {
  font-weight: 700;
  font-size: 16.5px;
  letter-spacing: 0.2px;
  background: linear-gradient(120deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand::after {
  content: '';
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-left: 10px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, rgba(45, 125, 255, 0.55), rgba(122, 92, 255, 0.35));
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.50), 0 0 24px rgba(45, 125, 255, 0.45);
  vertical-align: middle;
}

.muted {
  color: var(--muted);
}

/* ---------- 导航药丸 ---------- */
.nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--stroke);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.60), rgba(255, 255, 255, 0.20));
  padding: 7px 13px;
  border-radius: 999px;
  transition: transform 200ms cubic-bezier(0.2, 0.8, 0.2, 1), border-color 200ms ease, box-shadow 200ms ease;
  box-shadow: 0 8px 22px rgba(28, 40, 70, 0.10), inset 0 1px 0 var(--edge-hi);
}

.nav a:hover {
  transform: translateY(-1.5px);
  border-color: rgba(255, 255, 255, 0.80);
  box-shadow: 0 14px 32px rgba(28, 40, 70, 0.16), inset 0 1px 0 var(--edge-hi);
}

.nav a.active {
  border-color: rgba(45, 125, 255, 0.50);
  background: linear-gradient(135deg, rgba(45, 125, 255, 0.22), rgba(122, 92, 255, 0.12));
  color: #1a52c0;
}

/* ---------- 网格 ---------- */
.grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 16px;
  margin-top: 16px;
}

@media (max-width: 960px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- 玻璃卡片 ---------- */
.card {
  border: 1px solid var(--stroke);
  background: linear-gradient(135deg, var(--glass), var(--glass2));
  border-radius: 26px;
  padding: 18px;
  box-shadow: var(--shadow),
    inset 0 1px 0 var(--edge-hi),
    inset 0 -1px 0 var(--edge-lo);
  position: relative;
  overflow: hidden;
  transition: transform 240ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 240ms ease;
}

/* 卡片折射高光：顶部弧 + 斜向反光带 */
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(130% 70% at 15% -10%, rgba(255, 255, 255, 0.70), transparent 55%),
    radial-gradient(90% 60% at 100% 0%, rgba(122, 92, 255, 0.14), transparent 60%);
  opacity: 0.9;
}

.card::after {
  content: '';
  position: absolute;
  top: -60%;
  left: -30%;
  width: 60%;
  height: 220%;
  pointer-events: none;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: rotate(8deg);
  opacity: 0.5;
}

.card > * {
  position: relative;
  z-index: 1;
}

.section-title {
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

/* ---------- 表单控件 ---------- */
label {
  display: block;
  margin: 12px 0 6px;
  color: var(--muted);
  font-size: 12.5px;
  letter-spacing: 0.25px;
}

input,
select,
textarea {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--stroke);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.62), rgba(255, 255, 255, 0.28));
  color: var(--text);
  padding: 11px 13px;
  outline: none;
  box-shadow: inset 0 1px 0 var(--edge-hi), inset 0 -1px 2px rgba(18, 22, 30, 0.04);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(45, 125, 255, 0.55);
  box-shadow: 0 0 0 5px rgba(45, 125, 255, 0.18), inset 0 1px 0 var(--edge-hi);
}

textarea {
  min-height: 92px;
  resize: vertical;
}

/* ---------- 按钮（液态玻璃 + 反光扫光） ---------- */
button {
  border: 1px solid var(--stroke);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.22));
  color: var(--text);
  border-radius: 999px;
  padding: 10px 16px;
  cursor: pointer;
  font-weight: 550;
  transition: transform 200ms cubic-bezier(0.2, 0.8, 0.2, 1), border-color 200ms ease, box-shadow 200ms ease;
  box-shadow: 0 12px 30px rgba(28, 40, 70, 0.12), inset 0 1px 0 var(--edge-hi);
  position: relative;
  overflow: hidden;
}

/* 扫光高光 */
button::after {
  content: '';
  position: absolute;
  top: 0;
  left: -120%;
  width: 60%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  transform: skewX(-18deg);
  transition: left 600ms ease;
}

button:hover {
  transform: translateY(-1.5px);
  border-color: rgba(255, 255, 255, 0.85);
  box-shadow: 0 18px 42px rgba(28, 40, 70, 0.18), inset 0 1px 0 var(--edge-hi);
}

button:hover::after {
  left: 130%;
}

button:active {
  transform: translateY(0) scale(0.985);
}

button.primary {
  border-color: rgba(45, 125, 255, 0.45);
  background: linear-gradient(135deg, rgba(45, 125, 255, 0.92), rgba(122, 92, 255, 0.85));
  color: #fff;
  box-shadow: 0 16px 40px rgba(45, 125, 255, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

button.primary:hover {
  box-shadow: 0 22px 54px rgba(45, 125, 255, 0.42), inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

button.secondary {
  border-color: var(--stroke);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.50), rgba(255, 255, 255, 0.18));
}

button.danger {
  border-color: rgba(255, 55, 95, 0.45);
  background: linear-gradient(135deg, rgba(255, 55, 95, 0.90), rgba(255, 99, 140, 0.82));
  color: #fff;
  box-shadow: 0 16px 40px rgba(255, 55, 95, 0.30), inset 0 1px 0 rgba(255, 255, 255, 0.40);
}

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

/* ---------- 消息条 ---------- */
.msg {
  margin-top: 12px;
  padding: 11px 14px;
  border-radius: 16px;
  border: 1px solid var(--stroke);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.25));
  box-shadow: inset 0 1px 0 var(--edge-hi);
}

.msg.error {
  border-color: rgba(255, 55, 95, 0.40);
  background: linear-gradient(135deg, rgba(255, 55, 95, 0.20), rgba(255, 99, 140, 0.10));
  color: #b81e44;
}

/* ---------- 时段 ---------- */
.slot-days {
  display: grid;
  gap: 12px;
  margin-top: 10px;
}

.slot-day {
  border: 1px solid var(--stroke);
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.45), rgba(255, 255, 255, 0.16));
  padding: 14px;
  box-shadow: inset 0 1px 0 var(--edge-hi);
}

.slot-day-title {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 10px;
}

.slot-day-title strong {
  font-weight: 700;
  letter-spacing: 0.2px;
}

.slot-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.slot-chip {
  border: 1px solid var(--stroke);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.62), rgba(255, 255, 255, 0.26));
  border-radius: 999px;
  padding: 9px 13px;
  cursor: pointer;
  user-select: none;
  transition: transform 200ms cubic-bezier(0.2, 0.8, 0.2, 1), border-color 200ms ease, box-shadow 200ms ease;
  box-shadow: 0 8px 20px rgba(28, 40, 70, 0.10), inset 0 1px 0 var(--edge-hi);
}

.slot-chip:hover {
  transform: translateY(-2px);
  border-color: rgba(45, 125, 255, 0.40);
  box-shadow: 0 14px 30px rgba(45, 125, 255, 0.18), inset 0 1px 0 var(--edge-hi);
}

.slot-chip.full {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.slot-chip.selected {
  border-color: rgba(45, 125, 255, 0.60);
  background: linear-gradient(135deg, rgba(45, 125, 255, 0.20), rgba(122, 92, 255, 0.12));
  box-shadow: 0 16px 38px rgba(45, 125, 255, 0.22), inset 0 1px 0 var(--edge-hi);
}

.slot-time {
  font-weight: 650;
  letter-spacing: 0.2px;
}

.slot-meta {
  color: var(--muted);
  font-size: 12.5px;
  margin-top: 2px;
}

/* ---------- 预约列表 ---------- */
.appt-list {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.appt-item {
  border: 1px solid var(--stroke);
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.22));
  padding: 14px;
  box-shadow: var(--shadow), inset 0 1px 0 var(--edge-hi);
}

.appt-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.appt-title {
  font-weight: 700;
}

.appt-sub {
  color: var(--muted);
  font-size: 13px;
  margin-top: 2px;
}

.appt-msg {
  margin-top: 10px;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---------- 老师面板 ---------- */
.t-panels {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 16px;
  margin-top: 12px;
}

@media (max-width: 960px) {
  .t-panels {
    grid-template-columns: 1fr;
  }
}

.t-box {
  padding: 18px;
}

.t-box-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.t-box-title {
  font-weight: 750;
  letter-spacing: 0.2px;
  font-size: 14px;
}

.t-appt-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

@media (max-width: 960px) {
  .t-appt-grid {
    grid-template-columns: 1fr;
  }
}

.t-appt-card {
  border: 1px solid var(--stroke);
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.60), rgba(255, 255, 255, 0.26));
  padding: 16px;
  box-shadow: var(--shadow), inset 0 1px 0 var(--edge-hi);
  transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1), border-color 220ms ease, box-shadow 220ms ease;
}

.t-appt-card:hover {
  transform: translateY(-2px);
  border-color: rgba(45, 125, 255, 0.40);
  box-shadow: var(--shadow-lg), inset 0 1px 0 var(--edge-hi);
}

.t-appt-card.urgent {
  border-color: rgba(255, 55, 95, 0.50);
  background: linear-gradient(135deg, rgba(255, 55, 95, 0.20), rgba(255, 255, 255, 0.30));
  box-shadow: 0 24px 60px rgba(255, 55, 95, 0.20), inset 0 1px 0 var(--edge-hi);
  transform: scale(1.02);
}

.t-appt-time {
  font-size: 24px;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.t-appt-date {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.2px;
}

.t-appt-student {
  margin-top: 10px;
  font-size: 18px;
  font-weight: 750;
  letter-spacing: 0.2px;
}

.t-appt-msg {
  margin-top: 10px;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

.t-small-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.t-small-item {
  border: 1px solid var(--stroke);
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.52), rgba(255, 255, 255, 0.20));
  padding: 11px 13px;
  box-shadow: inset 0 1px 0 var(--edge-hi);
}

.t-small-main {
  font-weight: 650;
  letter-spacing: 0.2px;
}

/* ---------- 表格 ---------- */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 12px;
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid var(--stroke);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.42), rgba(255, 255, 255, 0.16));
  box-shadow: var(--shadow), inset 0 1px 0 var(--edge-hi);
}

th,
td {
  border-bottom: 1px solid var(--stroke2);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  font-size: 13px;
}

th {
  color: var(--muted);
  font-weight: 650;
  letter-spacing: 0.2px;
  background: rgba(255, 255, 255, 0.30);
}

tr:last-child td {
  border-bottom: none;
}

tbody tr {
  transition: background 160ms ease;
}

tbody tr:hover {
  background: rgba(45, 125, 255, 0.06);
}

/* ---------- 抽屉 ---------- */
.t-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(18, 22, 30, 0.38);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
  z-index: 1000;
}

.t-drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.t-drawer {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: min(440px, calc(100vw - 32px));
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.55));
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border-left: 1px solid var(--stroke);
  box-shadow: -28px 0 70px rgba(28, 40, 70, 0.28), inset 1px 0 0 var(--edge-hi);
  transform: translateX(16px);
  transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.t-drawer-overlay.open .t-drawer {
  transform: translateX(0);
}

.t-drawer-head {
  padding: 16px 16px 12px;
  border-bottom: 1px solid var(--stroke2);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.t-drawer-title {
  font-weight: 800;
  letter-spacing: -0.01em;
}

.t-drawer-sub {
  margin-top: 2px;
  font-size: 13px;
  color: var(--muted);
}

.t-drawer-body {
  flex: 1;
  min-height: 0;
  padding: 16px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.t-drawer-chat {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.t-drawer-meta {
  border: 1px solid var(--stroke);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.45);
  padding: 12px 14px;
  box-shadow: inset 0 1px 0 var(--edge-hi);
}

.t-drawer-meta strong {
  font-weight: 700;
}

.t-drawer-templates {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.t-drawer-chip {
  border: 1px solid var(--stroke);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.22));
  box-shadow: 0 8px 20px rgba(28, 40, 70, 0.10), inset 0 1px 0 var(--edge-hi);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
  transition: transform 180ms ease, border-color 180ms ease;
}

.t-drawer-chip:hover {
  transform: translateY(-1.5px);
  border-color: rgba(45, 125, 255, 0.45);
}

.t-drawer-details {
  margin-top: 12px;
  border: 1px solid var(--stroke);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.40);
  padding: 12px 14px;
  box-shadow: inset 0 1px 0 var(--edge-hi);
}

.t-drawer-details summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 13px;
}

.t-drawer-details textarea {
  margin-top: 10px;
  min-height: 120px;
}

.t-drawer-footer {
  padding: 12px 16px 16px;
  border-top: 1px solid var(--stroke2);
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.t-drawer-footer textarea {
  flex: 1;
  min-height: 44px;
  max-height: 120px;
  resize: none;
}

.t-drawer-footer button {
  flex-shrink: 0;
  padding: 10px 18px;
}

body.drawer-open {
  overflow: hidden;
}

/* ---------- 学生对话面板 ---------- */
.s-chat-overlay {
  position: fixed;
  inset: 0;
  background: rgba(18, 22, 30, 0.38);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.s-chat-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.s-chat-panel {
  width: min(520px, 100%);
  max-height: min(720px, calc(100vh - 32px));
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.60));
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border: 1px solid var(--stroke);
  border-radius: 26px;
  box-shadow: var(--shadow-lg), inset 0 1px 0 var(--edge-hi);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.96);
  transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.s-chat-overlay.open .s-chat-panel {
  transform: scale(1);
}

.s-chat-head {
  padding: 14px 18px 12px;
  border-bottom: 1px solid var(--stroke2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.s-chat-title {
  font-weight: 800;
  letter-spacing: -0.01em;
}

.s-chat-body {
  flex: 1;
  overflow: auto;
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.s-chat-msg {
  display: flex;
  gap: 10px;
  max-width: 85%;
}

.s-chat-msg.self {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.s-chat-msg.other {
  align-self: flex-start;
}

.s-chat-avatar {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  align-self: flex-end;
}

.s-chat-msg.self .s-chat-avatar {
  background: linear-gradient(135deg, #2d7dff, #7a5cff);
}

.s-chat-msg.other .s-chat-avatar {
  background: linear-gradient(135deg, #4caf50, #2e7d32);
}

.s-chat-bubble {
  padding: 10px 14px;
  border-radius: 18px;
  font-size: 14px;
  line-height: 1.5;
  word-break: break-word;
  white-space: pre-wrap;
  box-shadow: 0 2px 8px rgba(28, 40, 70, 0.08);
}

.s-chat-msg.self .s-chat-bubble {
  background: linear-gradient(135deg, #c8e6c9, #a5d6a7);
  color: #1b5e20;
  border-bottom-right-radius: 4px;
}

.s-chat-msg.other .s-chat-bubble {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0.55));
  color: var(--text);
  border-bottom-left-radius: 4px;
  border: 1px solid var(--stroke);
}

.s-chat-time {
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
  text-align: right;
}

.s-chat-msg.other .s-chat-time {
  text-align: left;
}

.s-chat-footer {
  padding: 12px 18px 16px;
  border-top: 1px solid var(--stroke2);
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.s-chat-footer textarea {
  flex: 1;
  min-height: 44px;
  max-height: 120px;
  resize: none;
}

.s-chat-footer button {
  flex-shrink: 0;
  padding: 10px 18px;
}

.s-chat-empty {
  text-align: center;
  color: var(--muted);
  padding: 24px;
  font-size: 13px;
}

body.chat-open {
  overflow: hidden;
}

/* ---------- 无障碍：减少动画 ---------- */
@media (prefers-reduced-motion: reduce) {
  body::before {
    animation: none;
  }
  * {
    transition: none !important;
  }
}