/* ============================================================================
   SQL ERD Viewer - Styles
   ============================================================================ */

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

/* ----------------------------------------------------------------------------
   Theme Variables
   ---------------------------------------------------------------------------- */
:root {
  --topbar-h: 48px;
  --drawer-min-h: 200px;
  --drawer-max-h: 60vh;
  --drawer-default-h: 280px;

  /* Dark theme (default) */
  --bg: #1a1c24;
  --topbar-bg: #12151b;
  --topbar-border: #2c313a;
  --drawer-bg: #151922;
  --drawer-border: #2c313a;
  --text: #e6edf3;
  --muted: #8b949e;
  --input-bg: #0f1115;
  --input-border: #2c313a;
  --input-text: #e6edf3;
  --btn-bg: #1a1d22;
  --btn-border: #2c313a;
  --btn-hover: #23272f;
  --btn-text: #e6edf3;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-text: #fff;
  --divider: #2c313a;
  --status-ok: #4ade80;
  --status-err: #f87171;
  --radius: 6px;

  /* ERD colors */
  --erd-bg: #1a1c24;
  --erd-grid: #2a2d38;
}

[data-theme="light"] {
  --bg: #f1f5f9;
  --topbar-bg: #ffffff;
  --topbar-border: #e2e8f0;
  --drawer-bg: #ffffff;
  --drawer-border: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --input-bg: #f8fafc;
  --input-border: #cbd5e1;
  --input-text: #1e293b;
  --btn-bg: #f1f5f9;
  --btn-border: #cbd5e1;
  --btn-hover: #e2e8f0;
  --btn-text: #334155;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --divider: #e2e8f0;
  --status-ok: #16a34a;
  --status-err: #dc2626;

  --erd-bg: #f8fafc;
  --erd-grid: #e2e8f0;
}

/* ----------------------------------------------------------------------------
   Layout
   ---------------------------------------------------------------------------- */
html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ----------------------------------------------------------------------------
   Topbar
   ---------------------------------------------------------------------------- */
.topbar {
  flex: 0 0 var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--topbar-border);
  gap: 8px;
  z-index: 20;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar-logo {
  font-size: 20px;
  color: var(--accent);
}

.topbar-title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

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

.divider {
  width: 1px;
  height: 20px;
  background: var(--divider);
  margin: 0 4px;
}

/* ----------------------------------------------------------------------------
   Buttons
   ---------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0 12px;
  height: 30px;
  border-radius: var(--radius);
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
  user-select: none;
}

.btn:hover {
  background: var(--btn-hover);
  border-color: var(--accent);
}

.btn:active {
  opacity: 0.85;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-text);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-icon {
  padding: 0 10px;
  font-size: 15px;
}

.btn-sm {
  height: 26px;
  padding: 0 10px;
  font-size: 12px;
}

/* ----------------------------------------------------------------------------
   Export Menu
   ---------------------------------------------------------------------------- */
.topbar-actions {
  position: relative;
}

.export-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 80px;
  margin-top: 4px;
  background: var(--drawer-bg);
  border: 1px solid var(--btn-border);
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  z-index: 100;
  overflow: hidden;
}

.export-menu.open {
  display: block;
}

.export-option {
  display: block;
  width: 100%;
  padding: 10px 16px;
  background: none;
  border: none;
  color: var(--text);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s;
}

.export-option:hover {
  background: var(--btn-hover);
}

.export-option:not(:last-child) {
  border-bottom: 1px solid var(--btn-border);
}

/* ----------------------------------------------------------------------------
   SQL Drawer
   ---------------------------------------------------------------------------- */
.sql-drawer {
  flex: 0 0 0;
  overflow: hidden;
  background: var(--drawer-bg);
  border-bottom: 1px solid var(--drawer-border);
  transition: flex-basis 0.2s ease;
  z-index: 10;
}

.sql-drawer.open {
  flex-basis: var(--drawer-default-h);
}

.sql-drawer-inner {
  display: flex;
  flex-direction: column;
  height: var(--drawer-default-h);
  padding: 12px 16px;
  gap: 8px;
}

#sqlInput {
  flex: 1;
  resize: both;
  min-height: 100px;
  max-height: calc(var(--drawer-max-h) - 60px);
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--input-text);
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: 12px;
  line-height: 1.6;
  padding: 10px 12px;
  outline: none;
  transition: border-color 0.15s;
}

#sqlInput:focus {
  border-color: var(--accent);
}

#sqlInput::placeholder {
  color: var(--muted);
}

.drawer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.status {
  font-size: 12px;
  color: var(--muted);
}

.status.ok {
  color: var(--status-ok);
}

.status.err {
  color: var(--status-err);
}

/* ----------------------------------------------------------------------------
   Graph Canvas
   ---------------------------------------------------------------------------- */
.editor-wrap {
  flex: 1;
  min-height: 0;
  position: relative;
  overflow: hidden;
}

#graph {
  width: 100%;
  height: 100%;
  background: var(--erd-bg);
  cursor: grab;
}

#graph:active {
  cursor: grabbing;
}

#erdSvg {
  width: 100%;
  height: 100%;
  display: block;
}

/* ----------------------------------------------------------------------------
   ERD Elements
   ---------------------------------------------------------------------------- */
.erd-table-group {
  cursor: pointer;
  transition: opacity 0.15s;
}

.erd-table-group:hover {
  filter: brightness(1.05);
}

.erd-relationship {
  pointer-events: none;
}

/* ----------------------------------------------------------------------------
   Minimap
   ---------------------------------------------------------------------------- */
.minimap {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 120px;
  background: var(--topbar-bg);
  border-left: 1px solid var(--btn-border);
  overflow: hidden;
  z-index: 10;
  display: none;
}

.minimap.visible {
  display: block;
}

#minimapSvg {
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0.8;
}

.minimap-viewport {
  position: absolute;
  border: 1px solid var(--accent);
  background: rgba(59, 130, 246, 0.15);
  pointer-events: none;
  border-radius: 1px;
}

/* ----------------------------------------------------------------------------
   Responsive
   ---------------------------------------------------------------------------- */
@media (max-width: 640px) {
  .topbar-title {
    display: none;
  }
  
  .topbar-actions .btn:not(.btn-primary):not(.btn-icon) {
    padding: 0 8px;
    font-size: 12px;
  }
}