:root {
  --bg: #f5f3ee;
  --surface: #fffffe;
  --surface2: #f0ede6;
  --border: #d8d2c4;
  --border-light: #e8e3d8;
  --text: #2c2a25;
  --text2: #8a8578;
  --accent: #5a8a6a;
  --accent-hover: #4d7a5d;
  --accent-light: #e8f0ea;
  --success: #5a8a6a;
  --danger: #c45c5c;
  --warning: #c49a4a;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(44,42,37,0.06);
}

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

body {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, "Times New Roman", serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.app { max-width: 960px; margin: 0 auto; padding: 32px 24px; }

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
}

header h1 {
  font-size: 21px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 2px;
}

header h1 span {
  color: var(--accent);
  font-weight: 400;
  font-style: italic;
}

.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
}

.tab-btn {
  padding: 8px 20px;
  border: none;
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 500; }

.panel { display: none; }
.panel.active { display: block; }

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.toolbar h2 { font-size: 16px; font-weight: 500; color: var(--text); }

.btn {
  padding: 7px 16px;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  font-family: inherit;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-ghost { background: transparent; color: var(--text2); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--text2); }
.btn-success { background: var(--accent); color: #fff; }
.btn-success:hover { background: var(--accent-hover); }

.api-list { display: flex; flex-direction: column; gap: 8px; }

.api-card {
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow);
  transition: border-color 0.2s;
}

.api-card.active-card { border-color: var(--accent); background: var(--accent-light); }

.api-info { flex: 1; }
.api-info .name { font-size: 14px; font-weight: 600; margin-bottom: 3px; }
.api-info .meta { font-size: 12px; color: var(--text2); }
.api-info .meta span { margin-right: 16px; }

.api-actions { display: flex; gap: 6px; align-items: center; }

.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
}

.badge-active { background: var(--accent); color: #fff; }
.badge-provider { background: var(--surface2); color: var(--text2); border: 1px solid var(--border-light); }

.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(44,42,37,0.25);
  backdrop-filter: blur(2px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.show { display: flex; }

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  width: 500px;
  max-width: 95vw;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 8px 30px rgba(44,42,37,0.1);
}

.modal h3 { font-size: 16px; margin-bottom: 20px; font-weight: 500; }

.form-group { margin-bottom: 12px; }

.form-group label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text2);
  margin-bottom: 5px;
}

.toggle-key-visibility {
  background: none;
  border: 1px solid var(--border);
  color: var(--text2);
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 3px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
}

.toggle-key-visibility:hover {
  color: var(--text);
  border-color: var(--text2);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 8px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-row { display: flex; gap: 12px; }
.form-row .form-group { flex: 1; }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text2);
}

.empty-state p { margin-bottom: 16px; font-size: 14px; }

.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 13px;
  font-family: inherit;
  color: #fff;
  animation: toastIn 0.3s ease;
  max-width: 340px;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--accent); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

.rhyme-section { margin-bottom: 20px; }
.rhyme-section h2 { font-size: 16px; font-weight: 500; margin-bottom: 12px; }

.input-area {
  width: 100%;
  min-height: 100px;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 16px;
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  line-height: 1.8;
  resize: vertical;
  outline: none;
  box-shadow: var(--shadow);
}

.input-area:focus { border-color: var(--accent); }

select.rhyme-select {
  padding: 7px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  outline: none;
}

.result-box {
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-top: 14px;
  box-shadow: var(--shadow);
}

.result-box h3 { font-size: 13px; color: var(--text2); margin-bottom: 10px; font-weight: 400; }

.char-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.char-tag {
  padding: 3px 9px;
  border-radius: 4px;
  font-size: 14px;
  border: 1px solid var(--border-light);
  background: var(--surface2);
}

.char-tag.ping { background: #e8f0ea; border-color: #b8d4be; color: #3a6b47; }
.char-tag.ze { background: #f0e8ea; border-color: #d4b8be; color: #6b3a47; }
.char-tag.polyphonic { background: #f0ede6; border-color: #d4d0b8; color: #6b5f3a; }
.char-tag.unknown { background: var(--surface2); color: var(--text2); }

.char-tag small { opacity: 0.7; }

.result-box .char-tag {
  font-size: 15px;
  padding: 4px 10px;
}

.compose-form {
  margin-bottom: 20px;
}

.compose-form .form-group {
  margin-bottom: 12px;
}

.compose-form label {
  display: block;
  font-size: 12px;
  color: var(--text2);
  margin-bottom: 5px;
}

.compose-form input,
.compose-form select {
  width: 100%;
  padding: 8px 10px;
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: 5px;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.compose-form input:focus,
.compose-form select:focus {
  border-color: var(--accent);
}

.poem-display {
  text-align: center;
  padding: 24px 0;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
}

.poem-line {
  font-size: 20px;
  line-height: 2.2;
  letter-spacing: 4px;
  color: var(--text);
}

.analyze-summary {
  margin-top: 12px;
}

.analyze-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  line-height: 1.8;
}

.analyze-line .line-num {
  width: 16px;
  text-align: right;
  font-size: 12px;
  color: var(--text2);
  flex-shrink: 0;
}

.check-section {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border-light);
}

.check-title{
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text2);
}

.check-title.pass{ color: var(--success); }
.check-title.fail{ color: var(--danger); }

.check-line{
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 5px;
  font-size: 13px;
}

.check-line.pass{ color: var(--success); }
.check-line.fail{ color: var(--danger); }

.check-detail{
  color: var(--text2);
  font-size: 12px;
}

.pz-compare{
  display: inline-flex;
  gap: 1px;
}

.pz-ch{
  display: inline-block;
  width: 18px;
  height: 18px;
  line-height: 18px;
  text-align: center;
  font-size: 12px;
  border-radius: 3px;
  background: var(--surface2);
  border: 1px solid var(--border-light);
  font-weight: 500;
}

.pz-ch.mismatch{
  background: rgba(196, 92, 92, 0.2);
  border-color: var(--danger);
  color: var(--danger);
  font-weight: 700;
}

.nd-label{
  display: inline-block;
  padding: 1px 8px;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 500;
  background: rgba(90, 138, 106, 0.1);
  color: var(--accent);
  border: 1px solid rgba(90, 138, 106, 0.2);
  margin-right: 4px;
}

.nd-pair{
  color: var(--text2);
  font-size: 12px;
}

.collapsible-block {
  margin-top: 6px;
  border: 1px solid rgba(90,138,106,0.15);
  border-radius: 6px;
  overflow: hidden;
}

.phase-toggle {
  font-size: 10px;
  color: var(--text2);
  transition: transform 0.2s;
}

.agent-phase > .phase-body {
  transition: max-height 0.3s ease;
}

.block-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(90,138,106,0.05);
  font-size: 12px;
  color: var(--accent);
  cursor: pointer;
  user-select: none;
  transition: background 0.15s;
}

.block-header:hover {
  background: rgba(90,138,106,0.1);
}

.block-toggle {
  font-size: 10px;
  display: inline-block;
  width: 12px;
  text-align: center;
}

.block-body {
  padding: 10px 12px;
  color: var(--text2);
  font-size: 12px;
  white-space: pre-wrap;
  max-height: 300px;
  overflow-y: auto;
  background: rgba(90,138,106,0.02);
  line-height: 1.8;
  border-top: 1px solid rgba(90,138,106,0.1);
}