/* ========== ASCII Table Tool Page ========== */
.tool-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}
.tool-header {
  text-align: center;
  margin-bottom: 20px;
}
.tool-header h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-heading);
  margin-bottom: 8px;
}
.tool-header .tool-desc {
  font-size: 16px;
  color: var(--color-muted);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ========== Quick Reference Cards ========== */
.quick-cards {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.quick-card {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  cursor: pointer;
  transition: all 0.2s;
  font-size: 11px;
  line-height: 1.3;
  min-width: 48px;
}
.quick-card:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-active);
  transform: translateY(-1px);
}
.quick-card .qc-char {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-heading);
  font-family: 'Consolas', 'Monaco', monospace;
}
.quick-card .qc-dec {
  font-size: 10px;
  color: var(--color-muted);
}
.quick-card.active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}
.quick-card.active .qc-char,
.quick-card.active .qc-dec {
  color: #fff;
}
.quick-card.ctrl-card .qc-char { color: #f59e0b; }
.quick-card.digit-card .qc-char { color: #3b82f6; }
.quick-card.letter-card .qc-char { color: #10b981; }
.quick-card.special-card .qc-char { color: #8b5cf6; }

/* ========== Mode Tabs ========== */
.mode-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.mode-tab {
  padding: 10px 20px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg-card);
  color: var(--color-text);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s;
}
.mode-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.mode-tab.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ========== Filter Bar ========== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  padding: 10px 14px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
}
.filter-bar select {
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 13px;
  background: var(--color-bg-card);
  color: var(--color-text);
  cursor: pointer;
}
.filter-bar .search-input {
  flex: 1;
  min-width: 180px;
  max-width: 320px;
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 13px;
  background: var(--color-bg-card);
  color: var(--color-text);
}
.filter-bar .search-input:focus {
  outline: none;
  border-color: var(--color-primary);
}
.filter-bar .badge-count {
  font-size: 12px;
  color: var(--color-muted);
  white-space: nowrap;
}
.filter-bar .filter-hint {
  font-size: 11px;
  color: var(--color-muted);
  background: var(--color-bg-active);
  padding: 3px 8px;
  border-radius: 4px;
}

/* ========== ASCII Table ========== */
.ascii-table-wrap {
  overflow-x: auto;
  margin-bottom: 12px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
}
.ascii-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  min-width: 700px;
}
.ascii-table th {
  background: var(--color-bg-card);
  color: var(--color-heading);
  font-weight: 600;
  padding: 8px 8px;
  text-align: center;
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 1;
  font-size: 11px;
}
.ascii-table td {
  padding: 5px 8px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 12px;
  transition: background 0.2s;
}
.ascii-table tr:hover td {
  background: var(--color-bg-active);
}
.ascii-table tr.highlight td {
  background: #fef3c7 !important;
}
.ascii-table tr.linked-highlight td {
  background: #dbeafe !important;
  font-weight: 700;
}
.ascii-table .char-cell {
  font-family: sans-serif;
  font-size: 16px;
  text-align: center;
  font-weight: 600;
}
.ascii-table .desc-cell {
  font-family: sans-serif;
  font-size: 11px;
  text-align: left;
  color: var(--color-muted);
  max-width: 120px;
}
.ascii-table .copy-btn-cell {
  text-align: center;
}
.ascii-table .copy-char-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
  font-size: 11px;
  color: var(--color-muted);
  transition: all 0.15s;
}
.ascii-table .copy-char-btn:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ========== Category Tags ========== */
.tag-cell { text-align: center; }
.tag {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
  white-space: nowrap;
}
.tag-control { background: #fef3c7; color: #92400e; }
.tag-digit { background: #dbeafe; color: #1e40af; }
.tag-letter { background: #d1fae5; color: #065f46; }
.tag-punct { background: #f3e8ff; color: #6b21a8; }
.tag-space { background: #fce7f3; color: #9d174d; }
.tag-extended { background: #f3f4f6; color: #374151; }
.tag-del { background: #fee2e2; color: #991b1b; }

/* ========== Converter Section ========== */
.converter-section {
  display: none;
}
.converter-section.active {
  display: block;
}
.converter-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.converter-panel {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
}
.converter-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
}
.converter-panel-header h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-heading);
}
.converter-panel-header .panel-actions {
  display: flex;
  gap: 4px;
}
.converter-panel textarea {
  width: 100%;
  height: 140px;
  padding: 14px;
  border: none;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.6;
  resize: vertical;
  background: #1e1e2e;
  color: #cdd6f4;
  box-sizing: border-box;
}
.converter-panel textarea:focus {
  outline: none;
}
.converter-panel textarea.output-area {
  background: #1e1e2e;
  color: #cdd6f4;
}
.converter-panel textarea.output-area:disabled {
  opacity: 1;
  cursor: default;
}
.converter-result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.converter-result-table th {
  background: var(--color-bg-card);
  color: var(--color-heading);
  font-weight: 600;
  padding: 8px 10px;
  text-align: center;
  border-bottom: 2px solid var(--color-border);
  font-size: 11px;
}
.converter-result-table td {
  padding: 6px 10px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 12px;
}
.converter-result-table .crt-char {
  font-family: sans-serif;
  font-size: 18px;
  font-weight: 600;
}

/* ========== Decimal Input ========== */
.decimal-input-area {
  margin-bottom: 12px;
}
.decimal-input-area .di-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  padding: 8px 0;
}
.decimal-input-area .di-row label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-heading);
  min-width: 70px;
}
.decimal-input-area .di-row input {
  flex: 1;
  min-width: 100px;
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 13px;
  font-family: 'Consolas', monospace;
}
.decimal-input-area .di-row input:focus {
  outline: none;
  border-color: var(--color-primary);
}
.decimal-input-area .di-row .di-result {
  font-family: 'Consolas', monospace;
  font-size: 13px;
  color: var(--color-heading);
  padding: 4px 8px;
  background: var(--color-bg-active);
  border-radius: 4px;
  min-width: 80px;
  text-align: center;
}

/* ========== Status ========== */
#statusMessage {
  margin-bottom: 14px;
}
.info-box, .success-box, .error-box {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  display: none;
}
.error-box { background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }
.success-box { background: #f0fdf4; color: #16a34a; border: 1px solid #bbf7d0; }
.info-box { background: #eff6ff; color: #2563eb; border: 1px solid #bfdbfe; }

/* ========== Empty Table State ========== */
.empty-table {
  text-align: center;
  padding: 40px 20px;
  color: var(--color-muted);
  font-size: 14px;
}
.empty-table .empty-icon {
  font-size: 36px;
  margin-bottom: 8px;
  opacity: 0.5;
}
.empty-table .empty-hint {
  font-size: 12px;
  margin-top: 6px;
  color: var(--color-muted);
  opacity: 0.7;
}

/* ========== Tool Info ========== */
.tool-info {
  margin-top: 24px;
  padding: 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
}
.tool-info h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 10px;
}
.tool-info h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-heading);
  margin: 14px 0 6px;
}
.tool-info p, .tool-info li {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.7;
}
.tool-info ul {
  padding-left: 20px;
  margin: 6px 0;
}
.tool-info .info-tip {
  margin-top: 12px;
  padding: 10px 14px;
  background: var(--color-bg-active);
  border-radius: 8px;
  font-size: 13px;
  color: var(--color-text);
  border-left: 3px solid var(--color-primary);
}

/* ========== Action Bar ========== */
.action-bar {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.action-btn {
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-bg-card);
  color: var(--color-text);
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.action-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.action-btn.primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.action-btn.primary:hover { opacity: 0.9; }

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .tool-header h1 { font-size: 24px; }
  .converter-panels { grid-template-columns: 1fr; }
  .ascii-table { font-size: 11px; }
  .ascii-table th, .ascii-table td { padding: 4px 5px; }
  .quick-card { min-width: 36px; padding: 4px 6px; }
  .quick-card .qc-char { font-size: 14px; }
}
@media (max-width: 480px) {
  .tool-container { padding: 12px; }
  .filter-bar { flex-direction: column; }
  .filter-bar .search-input { max-width: 100%; min-width: auto; }
  .ascii-table th, .ascii-table td { padding: 3px 4px; font-size: 10px; }
  .ascii-table .desc-cell { max-width: 60px; }
}