/* ================================================================
   听写工具 — Modern Light UI
   White surface · Near-black text · Indigo accent · DM Sans
   ================================================================ */

:root {
  /* Backgrounds */
  --bg:        #f4f4f5;
  --surface:   #ffffff;
  --surface2:  #f4f4f5;
  --surface3:  #e4e4e7;

  /* Borders */
  --border:    #e4e4e7;
  --border2:   #d4d4d8;

  /* Text — maximum contrast on white */
  --text:      #09090b;
  --text2:     #52525b;
  --text3:     #a1a1aa;

  /* Accent — indigo, modern SaaS */
  --accent:    #6366f1;
  --accent-dk: #4f46e5;
  --accent-lt: #818cf8;
  --accent-bg: rgba(99,102,241,0.07);
  --accent-ring: rgba(99,102,241,0.18);

  /* State */
  --success:   #16a34a;
  --danger:    #dc2626;

  /* Typography */
  --font: 'DM Sans', -apple-system, 'PingFang SC', 'Hiragino Sans GB',
          'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;

  /* Geometry */
  --r:    6px;
  --r-sm: 4px;
  --r-lg: 10px;

  /* Spacing */
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px;
  --s6:32px; --s7:40px; --s8:64px;

  /* Motion */
  --ease:     cubic-bezier(0.4,0,0.2,1);
  --ease-out: cubic-bezier(0,0,0.2,1);
  --t1: 120ms; --t2: 200ms; --t3: 280ms;

  /* Elevation */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 16px 40px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.06);
}

/* ─── Reset ─────────────────────────────── */
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { font-size:16px; -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

/* ─── App Shell ──────────────────────────── */
#app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ─── Header ─────────────────────────────── */
.app-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255,255,255,0.88);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--s7);
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand { display:flex; align-items:center; gap:var(--s3); }
.brand-zh {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.brand-en {
  font-size: 0.72rem;
  color: var(--text3);
  letter-spacing: 0.03em;
  padding: 2px 7px;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--r-sm);
}

.app-nav { display:flex; align-items:center; gap:4px; }
.nav-tab {
  display: flex;
  align-items: center;
  padding: 0 var(--s4);
  height: 36px;
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text2);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color var(--t2) var(--ease), border-color var(--t2) var(--ease);
  white-space: nowrap;
  outline: none;
}
.nav-tab:hover { color: var(--text); }
.nav-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ─── Main ───────────────────────────────── */
.app-main {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: var(--s7);
}

/* ─── Page Header ────────────────────────── */
.page-header {
  margin-bottom: var(--s6);
  padding-bottom: var(--s4);
  border-bottom: 1px solid var(--border);
}
.page-header-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: var(--s1);
}
.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.25;
}

/* ─── Buttons ────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 14px;
  font-family: var(--font);
  font-size: 0.84rem;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: var(--r);
  cursor: pointer;
  transition:
    background var(--t1) var(--ease),
    color var(--t1) var(--ease),
    border-color var(--t1) var(--ease),
    box-shadow var(--t2) var(--ease),
    transform var(--t1) var(--ease);
  outline: none;
  user-select: none;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* Primary */
.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  font-weight: 600;
}
.btn-primary:hover {
  background: var(--accent-dk);
  border-color: var(--accent-dk);
  box-shadow: 0 0 0 3px var(--accent-ring);
}

/* Secondary / Ghost */
.btn-secondary, .btn-ghost {
  background: var(--surface);
  color: var(--text2);
  border-color: var(--border2);
}
.btn-secondary:hover, .btn-ghost:hover {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--border2);
  box-shadow: none;
  transform: none;
}

/* Bare .btn */
.btn:not([class*="btn-"]) {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border2);
}
.btn:not([class*="btn-"]):hover {
  background: var(--surface2);
  box-shadow: none;
}

/* Danger */
.btn-danger {
  background: transparent;
  color: var(--danger);
  border-color: var(--border2);
}
.btn-danger:hover {
  background: rgba(220,38,38,0.06);
  border-color: var(--danger);
  transform: translateY(-1px);
  box-shadow: none;
}

/* Success / Gold */
.btn-success, .btn-gold {
  background: rgba(22,163,74,0.08);
  color: var(--success);
  border-color: rgba(22,163,74,0.22);
}
.btn-success:hover, .btn-gold:hover {
  background: rgba(22,163,74,0.14);
  border-color: var(--success);
}

/* Sizes */
.btn-sm    { padding: 4px 10px; font-size: 0.77rem; }
.btn-lg    { padding: 10px 22px; font-size: 0.9rem; font-weight: 600; }
.control-btn { padding: 8px 18px; min-width: 80px; }
.nav-btns { display: flex; gap: 8px; justify-content: center; }

/* ─── Forms ──────────────────────────────── */
.form-group { margin-bottom: var(--s3); }
.form-group label {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text2);
  margin-bottom: 5px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 8px 10px;
  font-family: var(--font);
  font-size: 0.875rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--r-sm);
  outline: none;
  transition: border-color var(--t1), box-shadow var(--t1);
  appearance: none;
  -webkit-appearance: none;
  line-height: 1.5;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}
.form-group input:disabled,
.form-group select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--surface2);
}
.form-group textarea {
  height: 240px;
  resize: vertical;
  line-height: 1.6;
}
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2352525b' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 30px;
  cursor: pointer;
}
.form-inline { display:flex; gap:var(--s2); }
.form-inline input { flex:1; }

/* ─── Search ─────────────────────────────── */
.search-wrap { position:relative; flex:1; min-width:200px; }
.search-bar {
  width: 100%;
  padding: 8px 12px 8px 34px;
  font-family: var(--font);
  font-size: 0.875rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--r-sm);
  outline: none;
  transition: border-color var(--t1), box-shadow var(--t1);
  appearance: none;
}
.search-bar:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}
.search-bar::placeholder { color: var(--text3); }
.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.88rem;
  color: var(--text3);
  pointer-events: none;
  line-height: 1;
}

/* ─── Controls bar ───────────────────────── */
.controls {
  display: flex;
  gap: var(--s2);
  margin-bottom: var(--s5);
  align-items: center;
  flex-wrap: wrap;
}
.controls .search-bar { flex:1; min-width:200px; }

/* ─── Table ──────────────────────────────── */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  margin: 0;
  box-shadow: var(--shadow-sm);
}
thead { background: var(--surface2); }
th {
  padding: 10px 16px;
  text-align: left;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text2);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: color var(--t1);
  border-bottom: 1px solid var(--border);
}
th:hover { color: var(--text); background: var(--surface3); }
th::after { content:'⇅'; margin-left:4px; opacity:0.35; font-size:0.8em; }
th.sort-asc::after  { content:'↑'; opacity:1; color:var(--accent); }
th.sort-desc::after { content:'↓'; opacity:1; color:var(--accent); }
.sort-indicator { display:none; }

td {
  padding: 11px 16px;
  font-size: 0.875rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tbody tr { transition: background var(--t1); }
tbody tr:hover { background: var(--surface2); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:nth-child(even) { background: rgba(244,244,245,0.5); }
tbody tr:nth-child(even):hover { background: var(--surface2); }

/* Cell types */
.td-name  { font-weight: 600; color: var(--text); }
.dir-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--r-sm);
  font-size: 0.74rem;
  font-weight: 500;
}
.td-preview { color: var(--text2); font-size: 0.84rem; max-width: 240px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.td-date    { color: var(--text3); font-size: 0.78rem; white-space: nowrap; }
.td-actions { display:flex; gap:6px; white-space:nowrap; }

/* Empty state */
.no-data {
  text-align: center;
  padding: 60px 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  color: var(--text2);
  font-size: 0.875rem;
}

/* ─── Modals ─────────────────────────────── */
.modal {
  display: flex;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0,0,0,0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  align-items: flex-start;
  justify-content: center;
  padding: 56px 16px 16px;
  overflow-y: auto;
  animation: modal-in var(--t3) var(--ease-out);
}
.modal-edit { z-index:1002 !important; }
.modal-dir  { z-index:1001 !important; }
.modal-confirm { z-index:1003 !important; }
@keyframes modal-in { from { opacity:0; } to { opacity:1; } }

.modal-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  width: 100%;
  max-width: 520px;
  padding: var(--s6);
  position: relative;
  animation: panel-in var(--t3) var(--ease-out);
  box-shadow: var(--shadow-lg);
  margin-bottom: 16px;
}
@keyframes panel-in {
  from { opacity:0; transform:translateY(-10px) scale(0.98); }
  to   { opacity:1; transform:translateY(0) scale(1); }
}
.modal-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: var(--s4);
  padding-bottom: var(--s3);
  border-bottom: 1px solid var(--border);
}
.modal-content h4 {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text2);
  margin: var(--s3) 0 var(--s2);
}
.close {
  position: absolute;
  top: var(--s4);
  right: var(--s4);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  cursor: pointer;
  color: var(--text2);
  font-size: 1rem;
  transition: color var(--t1), background var(--t1), transform var(--t2);
  z-index: 5;
}
.close:hover {
  color: var(--danger);
  background: rgba(220,38,38,0.06);
  border-color: rgba(220,38,38,0.3);
  transform: rotate(90deg);
}

/* ─── Directory Items ────────────────────── */
.dir-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px var(--s3);
  margin: var(--s1) 0;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
}
.dir-item-row strong { font-size: 0.875rem; color: var(--text); font-weight: 500; }
.dir-item-actions { display:flex; gap:4px; }
.dir-subjects-list {
  border-left: 2px solid var(--border2);
  margin: 4px 0 4px var(--s4);
  padding-left: var(--s3);
}
.dir-subject-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.84rem;
  color: var(--text2);
}
.dir-subject-item:last-child { border-bottom: none; }

/* ─── Dictation Layout ───────────────────── */
.dictation-container {
  display: grid;
  grid-template-columns: 292px 1fr;
  gap: var(--s5);
  align-items: start;
}

/* Left: settings panel */
.dictation-panel:first-child {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  position: sticky;
  top: 74px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.settings-panel-head {
  padding: 9px var(--s4);
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}
.settings-panel-head span {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text2);
}
.settings-panel-body { padding: var(--s3) var(--s4) var(--s4); }
.settings-divider {
  height: 1px;
  background: var(--border);
  margin: var(--s3) 0;
}
.sampling-actions { display:flex; gap:var(--s2); margin-top:var(--s2); }

/* Right: stage column */
.dictation-panel:last-child {
  display: flex;
  flex-direction: column;
  gap: var(--s3);
  min-width: 0;
}

/* Panel header strip */
.panel-head {
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  padding: 8px var(--s4);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.panel-head-title {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text2);
}
.panel-head-actions { display:flex; gap:4px; align-items:center; flex-wrap:wrap; }
.panel-head-actions .btn {
  font-size: 0.71rem;
  padding: 3px 9px;
  background: var(--surface);
  color: var(--text2);
  border-color: var(--border2);
}
.panel-head-actions .btn:hover {
  background: var(--surface3);
  color: var(--text);
  transform: none;
  box-shadow: none;
}

/* ─── Preview Area ───────────────────────── */
.preview-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.preview-area {
  max-height: 240px;
  overflow-y: auto;
  padding: var(--s2) var(--s4);
  scrollbar-width: thin;
  scrollbar-color: var(--border2) transparent;
  background: var(--surface);
  border: none;
  border-radius: 0;
  box-shadow: none;
  margin: 0;
  transition: none;
  position: static;
}
.preview-area:hover { border-color: transparent; box-shadow: none; }
.preview-area::-webkit-scrollbar { width:3px; }
.preview-area::-webkit-scrollbar-track { background:transparent; }
.preview-area::-webkit-scrollbar-thumb { background:var(--border2); border-radius:2px; }

.preview-item {
  display: flex;
  align-items: center;
  gap: var(--s2);
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}
.preview-item:last-child { border-bottom:none; }
.line-number {
  font-size: 0.66rem;
  color: var(--text3);
  min-width: 22px;
  text-align: right;
  flex-shrink: 0;
  user-select: none;
  font-weight: 400;
  margin-right: 0;
}
.line-content { flex:1; font-size:0.875rem; color:var(--text); line-height:1.5; word-break:break-word; }
.line-checkbox { flex-shrink:0; accent-color:var(--accent); cursor:pointer; width:14px; height:14px; margin-left:0; margin-right:0; align-self:center; }

/* Preview fullscreen */
.preview-area.preview-fullscreen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  max-height: none;
  overflow: auto;
  background: var(--surface);
  padding: var(--s8) 10vw;
  border-radius: 0;
  margin: 0;
}
.preview-area.preview-fullscreen .line-content { font-size:1.4rem; }
.preview-area.preview-fullscreen .line-number { font-size:0.9rem; min-width:40px; }

/* Copy button */
.copy-button {
  background: var(--surface) !important;
  color: var(--text2) !important;
  border-color: var(--border2) !important;
  font-size: 0.71rem !important;
  padding: 3px 9px !important;
  margin-right: auto;
  transform: none !important;
  box-shadow: none !important;
}
.copy-button:hover {
  background: var(--surface2) !important;
  color: var(--text) !important;
  transform: none !important;
  box-shadow: none !important;
}

/* ─── Display Area ───────────────────────── */
.display-area {
  min-height: 148px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 2.2rem;
  font-weight: 700;
  font-family: var(--font);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  position: relative;
  overflow: hidden;
  transition: background var(--t3) var(--ease), border-color var(--t2);
  padding: var(--s5);
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0;
  box-shadow: var(--shadow-sm);
}
.display-area > div {
  color: var(--text);
  animation: word-reveal var(--t3) var(--ease-out);
}
@keyframes word-reveal {
  from { opacity:0; transform:translateY(6px); }
  to   { opacity:1; transform:translateY(0); }
}
.display-area.active {
  background: var(--surface);
  border-color: rgba(99,102,241,0.3);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.06);
}

.pause-info {
  font-size: 0.3em;
  font-weight: 400;
  color: var(--text2);
  display: block;
  margin-top: 8px;
  letter-spacing: 0.04em;
}

/* Pause overlay */
.pause-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  animation: overlay-in var(--t2) var(--ease-out);
  border-radius: var(--r);
}
@keyframes overlay-in { from { opacity:0; } to { opacity:1; } }
.pause-text {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text2);
  background: var(--surface2);
  padding: var(--s3) var(--s5);
  border: 1px solid var(--border2);
  border-radius: var(--r);
}

/* Completion overlay */
.completion-overlay {
  position: absolute;
  inset: 0;
  background: rgba(99,102,241,0.04);
  border: 1px solid rgba(99,102,241,0.25);
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  animation: overlay-in var(--t2) var(--ease-out);
}
.completion-text {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent);
}

/* Progress */
.progress-bar {
  height: 2px;
  background: var(--surface3);
  border-radius: 1px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.4s var(--ease);
  border-radius: 1px;
}

/* Controls */
.control-area {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: var(--s4);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

/* ═══════════════════════════════════════════
   FULLSCREEN — Pure theater (stays dark)
═══════════════════════════════════════════ */
.display-area.fullscreen {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  background: #0d0d1a;
  border: none;
  border-radius: 0;
  font-size: clamp(3.5rem, 10vw, 9rem);
  cursor: none;
  padding: 0;
  box-shadow: none;
}
.display-area.fullscreen.active {
  background: #0d0d1a;
  border-color: transparent;
  box-shadow: none;
}
.display-area.fullscreen > div {
  color: #ffffff;
  text-shadow: 0 0 60px rgba(99,102,241,0.15), 0 2px 24px rgba(0,0,0,0.4);
  letter-spacing: -0.01em;
  padding: 0 6vw;
  animation: fs-reveal 0.35s var(--ease-out);
}
@keyframes fs-reveal {
  from { opacity:0; transform:translateY(10px); }
  to   { opacity:1; transform:translateY(0); }
}
.display-area.fullscreen .pause-info {
  font-size: 0.16em;
  color: rgba(255,255,255,0.25);
}
.display-area.fullscreen .pause-overlay {
  background: rgba(13,13,26,0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 0;
}
.display-area.fullscreen .pause-text {
  font-size: clamp(1.8rem, 5vw, 4.5rem);
  letter-spacing: 0.16em;
  color: var(--accent-lt);
  background: rgba(99,102,241,0.08);
  border-color: rgba(99,102,241,0.2);
  border-radius: var(--r);
  text-shadow: 0 0 30px rgba(99,102,241,0.4);
}
.display-area.fullscreen .completion-overlay {
  background: rgba(99,102,241,0.06);
  border: none;
  border-radius: 0;
}
.display-area.fullscreen .completion-text {
  font-size: clamp(1.8rem, 5vw, 4.5rem);
  color: var(--accent-lt);
  text-shadow: 0 0 40px rgba(99,102,241,0.5);
  letter-spacing: 0.12em;
}
.display-area.fullscreen::after {
  content: '空格键 暂停 / 继续 · Esc 退出';
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.12);
  pointer-events: none;
  white-space: nowrap;
}

/* ─── View Transition ────────────────────── */
@keyframes view-in {
  from { opacity:0; transform:translateY(-6px); }
  to   { opacity:1; transform:translateY(0); }
}
.view-enter { animation: view-in var(--t3) var(--ease-out); }

@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@keyframes slideIn {
  from { opacity:0; transform:translateY(-40px) scale(0.92); }
  to   { opacity:1; transform:translateY(0) scale(1); }
}

/* ─── Import Conflict List ───────────────── */
.import-conflict-list {
  max-height: 240px;
  overflow-y: auto;
  border: 1px solid var(--border-lt);
  border-radius: var(--r-sm);
  padding: var(--s2) 0;
}
.import-conflict-item {
  display: flex;
  align-items: center;
  gap: var(--s2);
  padding: 6px var(--s3);
  font-size: 0.9rem;
  color: var(--ink-mid);
  border-bottom: 1px solid var(--border-lt);
}
.import-conflict-item:last-child { border-bottom: none; }

/* ─── Subject Multi-select & Arrange ────────── */
.subject-multi-select {
  height: 120px !important;
  background-image: none !important;
  padding-right: 10px !important;
  cursor: pointer;
}
.subject-multi-select option { padding: 3px 6px; }
.subject-multi-select option:checked {
  background: var(--accent-bg);
  color: var(--accent);
}

.subject-arrange-list {
  border: 1px solid var(--border2);
  border-radius: var(--r-sm);
  overflow: hidden;
}
.subject-arrange-item {
  display: flex;
  align-items: center;
  gap: var(--s2);
  padding: 7px 10px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  cursor: grab;
  transition: background var(--t1), opacity var(--t1);
  user-select: none;
  font-size: 0.84rem;
}
.subject-arrange-item:last-child { border-bottom: none; }
.subject-arrange-item:hover { background: var(--surface2); }
.subject-arrange-item.drag-over {
  background: var(--accent-bg);
  border-top: 2px solid var(--accent);
}
.subject-arrange-item.dragging { opacity: 0.4; cursor: grabbing; }
.arrange-handle {
  color: var(--text3);
  font-size: 1rem;
  line-height: 1;
  flex-shrink: 0;
}
.arrange-index {
  font-size: 0.66rem;
  color: var(--text3);
  min-width: 16px;
  text-align: right;
  flex-shrink: 0;
}
.arrange-name {
  flex: 1;
  color: var(--text);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ─── Responsive ─────────────────────────── */
@media (max-width: 900px) {
  .dictation-container { grid-template-columns: 1fr; }
  .dictation-panel:first-child { position: static; }
}
@media (max-width: 640px) {
  .header-inner { padding: 0 var(--s4); }
  .app-main { padding: var(--s5) var(--s4); }
  .brand-en { display: none; }
  .nav-tab { padding: 0 var(--s3); font-size: 0.82rem; }
  th, td { padding: 9px 10px; font-size: 0.82rem; }
  .td-preview, .td-date { display: none; }
  .controls { flex-direction: column; align-items: stretch; }
  .page-title { font-size: 1.25rem; }
  .modal { padding: var(--s3); padding-top: var(--s5); }
  .modal-content { padding: var(--s5); border-radius: var(--r); }
  .display-area { font-size: 1.6rem; min-height: 120px; }
  .display-area.fullscreen { font-size: clamp(2rem, 12vw, 6rem); }
  .dictation-container { gap: var(--s4); }
}

/* ─── iPad / Touch 适配 ──────────────────── */

/* 题目 checkbox 多选列表（isTouch 模式） */
.subject-checkbox-list {
  border: 1px solid var(--border2);
  border-radius: var(--r-sm);
  max-height: 160px;
  overflow-y: auto;
  background: var(--surface);
}
.subject-checkbox-item {
  display: flex;
  align-items: center;
  gap: var(--s2);
  padding: 10px var(--s3);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--text);
  user-select: none;
  transition: background var(--t1);
}
.subject-checkbox-item:last-child { border-bottom: none; }
.subject-checkbox-item:active { background: var(--surface2); }
.subject-checkbox-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

/* 触摸设备排序项：增大点击热区 */
.subject-arrange-item.touch-dragging {
  opacity: 0.3;
}

/* 全屏模式：触屏提示覆盖键盘提示 */
.display-area.fullscreen.is-touch::after {
  content: '点击屏幕 暂停 / 继续';
}

/* 全屏暂停时 "点击继续" 提示 */
.pause-tap-hint {
  font-size: 0.75rem;
  color: var(--text3);
  margin-top: 6px;
  letter-spacing: 0.06em;
}
.display-area.fullscreen .pause-tap-hint {
  font-size: 0.55rem;
  color: rgba(255,255,255,0.3);
}

/* ── Auth Page ─────────────────────────────────────────────────────────────── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px 32px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}
.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}
.auth-tab {
  flex: 1;
  background: none;
  border: none;
  padding: 10px 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text2);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.15s, border-color 0.15s;
}
.auth-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.auth-error {
  background: #fef2f2;
  color: #dc2626;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.875rem;
  margin-bottom: 8px;
}

/* ── User info in nav ──────────────────────────────────────────────────────── */
.user-email {
  font-size: 0.875rem;
  color: var(--text3);
  padding: 0 var(--s4);
  height: 36px;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
}