/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #faf8f5;
  --card: #ffffff;
  --border: #e5e0da;
  --text: #2c2825;
  --text-muted: #8a8177;
  --accent: #c4884a;
  --accent-hover: #b37a3f;
  --accent-light: #f5ebe0;
  --danger: #c44a4a;
  --success: #4a8c5c;
  --shadow: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.08);
  --radius: 6px;
  --radius-lg: 10px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

h1, h2, h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 600;
}

.hidden { display: none !important; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--card);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}
.btn:hover { border-color: var(--text-muted); }
.btn-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-accent:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }

/* ─── Login Screen ─── */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}
.login-card {
  background: var(--card);
  padding: 48px 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  border: 1px solid var(--border);
  max-width: 380px;
  width: 100%;
}
.login-card h1 {
  font-size: 28px;
  margin-bottom: 6px;
  color: var(--text);
}
.login-subtitle {
  font-style: italic;
  color: var(--text-muted);
  margin-bottom: 28px;
  font-size: 15px;
}
.login-btn {
  padding: 10px 28px;
  font-size: 15px;
  border-radius: 24px;
}

/* ─── Header ─── */
.header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  height: 52px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-title {
  font-size: 17px;
  white-space: nowrap;
}
.header-db-name {
  font-size: 13px;
  color: var(--text-muted);
  background: var(--accent-light);
  padding: 2px 10px;
  border-radius: 12px;
  white-space: nowrap;
}
.header-db-name:empty { display: none; }
.header-tabs {
  display: flex;
  gap: 2px;
  flex: 1;
  overflow-x: auto;
  min-width: 0;
}
.header-tab {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: 6px 6px 0 0;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
  color: var(--text-muted);
  border: 1px solid transparent;
  border-bottom: none;
  background: transparent;
  transition: all 0.15s;
}
.header-tab:hover { color: var(--text); background: var(--accent-light); }
.header-tab.active {
  color: var(--text);
  background: var(--bg);
  border-color: var(--border);
}
.header-tab .tab-close {
  font-size: 14px;
  line-height: 1;
  opacity: 0.4;
  cursor: pointer;
  margin-left: 4px;
}
.header-tab .tab-close:hover { opacity: 1; color: var(--danger); }
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  margin-left: auto;
}
.user-name { font-size: 13px; color: var(--text-muted); }

/* ─── Read-only Toggle ─── */
.read-only-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 12px;
}
.read-only-toggle input { accent-color: var(--accent); }
.toggle-label { color: var(--text-muted); }

/* ─── Main Layout ─── */
.main {
  padding: 20px;
  max-width: 1400px;
  margin: 0 auto;
}

/* ─── Panels ─── */
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-bottom: 16px;
  overflow: hidden;
}
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.panel-header h2 { font-size: 16px; }

/* ─── Connections ─── */
.connections-list { padding: 8px; }
.connection-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s;
}
.connection-item:hover { background: var(--accent-light); }
.connection-item .conn-name { font-weight: 500; }
.connection-item .conn-path { font-size: 12px; color: var(--text-muted); margin-left: 8px; }
.connection-item .conn-actions { display: flex; gap: 4px; }

/* ─── Open DB Form ─── */
.open-db-form { padding: 16px 18px; }
.form-group { margin-bottom: 14px; }
.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-group input[type="text"] {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  background: var(--bg);
  transition: border-color 0.15s;
}
.form-group input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
}
.input-row {
  display: flex;
  gap: 8px;
}
.input-row input { flex: 1; }

/* ─── Tab Content ─── */
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ─── Table Browser ─── */
.table-browser {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 16px;
}
.table-list-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.table-list-panel h3 {
  padding: 12px 14px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}
.table-list { list-style: none; max-height: 500px; overflow-y: auto; }
.table-list li {
  padding: 8px 14px;
  cursor: pointer;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}
.table-list li:hover { background: var(--accent-light); }
.table-list li.active { background: var(--accent-light); color: var(--accent); font-weight: 500; }

.table-detail {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ─── Column Info ─── */
.column-info {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.column-info-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.column-info-header h3 { font-size: 14px; }
.quick-actions { display: flex; gap: 4px; }
.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 500;
}
.badge-pk { background: var(--accent-light); color: var(--accent); }
.badge-fk { background: #e0eaf5; color: #4a6a8c; }
.badge-type { background: var(--bg); color: var(--text-muted); border: 1px solid var(--border); }
.badge-notnull { background: #fce4e4; color: var(--danger); }

/* ─── Data Table ─── */
.data-table-wrap {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.data-table-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  gap: 8px;
}
.data-table-toolbar .row-count {
  font-size: 12px;
  color: var(--text-muted);
}
.data-table-scroll { overflow-x: auto; }
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
table.data-table th {
  position: sticky;
  top: 0;
  background: var(--bg);
  padding: 8px 12px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
}
table.data-table th:hover { color: var(--text); }
table.data-table th .sort-arrow { margin-left: 4px; font-size: 10px; }
table.data-table td {
  padding: 7px 12px;
  border-bottom: 1px solid var(--border);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
table.data-table tr:hover td { background: var(--accent-light); }
table.data-table td.null-val { color: var(--text-muted); font-style: italic; }

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px;
  border-top: 1px solid var(--border);
  font-size: 13px;
}
.pagination .page-info { color: var(--text-muted); }

/* ─── SQL Editor ─── */
.sql-editor-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.sql-editor-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
}
.sql-textarea {
  width: 100%;
  min-height: 120px;
  padding: 14px;
  border: none;
  font-family: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.6;
  resize: vertical;
  background: var(--bg);
  color: var(--text);
  tab-size: 2;
}
.sql-textarea:focus { outline: none; }

/* ─── Query History ─── */
.history-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-top: 16px;
}
.history-panel h3 {
  padding: 10px 14px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.history-list { max-height: 250px; overflow-y: auto; }
.history-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s;
}
.history-item:hover { background: var(--accent-light); }
.history-item .hist-sql {
  flex: 1;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.history-item .hist-star {
  cursor: pointer;
  font-size: 16px;
  color: var(--border);
  flex-shrink: 0;
}
.history-item .hist-star.starred { color: var(--accent); }
.history-item .hist-db {
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
}
.history-item .hist-delete {
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
  flex-shrink: 0;
}
.history-item .hist-delete:hover { color: var(--danger); }
.history-filter {
  display: flex;
  gap: 4px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
}
.history-filter .btn.active { background: var(--accent-light); color: var(--accent); border-color: var(--accent); }

/* ─── Results ─── */
.results-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  font-size: 12px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.results-info .elapsed { font-style: italic; }

/* ─── Filter Input ─── */
.filter-input {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  font-family: inherit;
  background: var(--bg);
  width: 180px;
}
.filter-input:focus { outline: none; border-color: var(--accent); }

/* ─── Schema View ─── */
.schema-block {
  padding: 14px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.6;
  white-space: pre-wrap;
  background: var(--bg);
  max-height: 400px;
  overflow-y: auto;
}

/* ─── Modal ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  padding: 24px;
  width: 100%;
  max-width: 420px;
  border: 1px solid var(--border);
}
.modal h3 { margin-bottom: 16px; font-size: 18px; }
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
}

/* ─── Toast ─── */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 10px 16px;
  font-size: 13px;
  animation: slideIn 0.2s ease;
}
.toast.error { border-left: 3px solid var(--danger); }
.toast.success { border-left: 3px solid var(--success); }
@keyframes slideIn {
  from { transform: translateX(20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .table-browser { grid-template-columns: 1fr; }
  .header { flex-wrap: wrap; height: auto; padding: 8px 12px; gap: 8px; }
}