/* ─── Base ──────────────────────────────────────────────────────────────── */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a2e;
  --bg-card: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.1);
  --text-primary: #f0f0f5;
  --text-secondary: #8888aa;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

button {
  cursor: pointer;
  border: none;
  font-family: inherit;
  font-size: 14px;
}

/* ─── Landing Page ─────────────────────────────────────────────────────── */
.landing-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  border-bottom: 1px solid var(--border);
}

.landing-nav .logo {
  font-size: 24px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.landing-nav .nav-links {
  display: flex;
  gap: 16px;
  align-items: center;
}

.hero {
  text-align: center;
  padding: 100px 20px 60px;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff, #aaa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.6;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 10px;
  font-weight: 600;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-lg { padding: 16px 36px; font-size: 18px; }

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 60px auto;
  padding: 0 20px;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  backdrop-filter: blur(10px);
}

.step-card .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent);
  color: white;
  font-weight: 700;
  font-size: 20px;
  margin-bottom: 16px;
}

.step-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.step-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
}

/* Features */
.features {
  max-width: 1200px;
  margin: 80px auto;
  padding: 0 20px;
}

.features h2 {
  text-align: center;
  font-size: 36px;
  margin-bottom: 48px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  backdrop-filter: blur(10px);
}

.feature-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
}

/* Download Section */
.download-section {
  max-width: 1000px;
  margin: 80px auto;
  padding: 0 20px;
}

.download-section h2 {
  text-align: center;
  font-size: 36px;
  margin-bottom: 48px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  transition: all 0.2s;
}

.download-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.download-icon {
  color: var(--accent);
  margin-bottom: 4px;
}

.download-card h3 {
  font-size: 18px;
}

.download-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 8px;
}

/* Footer */
.landing-footer {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
  font-size: 14px;
  border-top: 1px solid var(--border);
  margin-top: 60px;
}

/* ─── Login Page ───────────────────────────────────────────────────────── */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px;
  width: 100%;
  max-width: 420px;
  text-align: center;
}

.login-box .logo {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent), #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.login-box .subtitle {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

#google-signin-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  background: white;
  color: #333;
  font-weight: 600;
  font-size: 15px;
  transition: all 0.2s;
}

#google-signin-btn:hover {
  background: #f0f0f0;
  transform: translateY(-1px);
}

#google-signin-btn svg {
  width: 20px;
  height: 20px;
}

/* ─── Editor ───────────────────────────────────────────────────────────── */
.editor-layout {
  display: grid;
  grid-template-columns: 240px 1fr 280px;
  grid-template-rows: 48px 1fr;
  height: 100vh;
  overflow: hidden;
}

/* Toolbar */
.editor-toolbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.editor-toolbar .logo {
  font-size: 16px;
  font-weight: 700;
  margin-right: 16px;
  background: linear-gradient(135deg, var(--accent), #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 8px;
  border-right: 1px solid var(--border);
}

.toolbar-group:last-child { border-right: none; }

.toolbar-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  transition: all 0.15s;
  font-size: 16px;
}

.toolbar-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.toolbar-btn.active {
  background: var(--accent);
  color: white;
}

.toolbar-spacer { flex: 1; }

.toolbar-text {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 0 8px;
}

/* Layers Panel */
.layers-panel {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.layers-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px;
}

.layer-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  transition: background 0.1s;
}

.layer-item:hover { background: rgba(255, 255, 255, 0.05); }
.layer-item.selected { background: rgba(99, 102, 241, 0.2); }

.layer-item .layer-icon {
  width: 16px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 12px;
}

.layer-item .layer-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.layer-item .layer-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.1s;
}

.layer-item:hover .layer-actions { opacity: 1; }

.layer-action-btn {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.layer-action-btn:hover { background: rgba(255, 255, 255, 0.1); }
.layer-action-btn.hidden { opacity: 0.4; }

/* Canvas Area */
.canvas-area {
  background: #1a1a2e;
  position: relative;
  overflow: hidden;
}

.canvas-container {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Inspector Panel */
.inspector-panel {
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.inspector-section {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.inspector-section h4 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.inspector-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.inspector-row label {
  font-size: 12px;
  color: var(--text-secondary);
  width: 24px;
  flex-shrink: 0;
}

.inspector-input {
  flex: 1;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 8px;
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
  outline: none;
}

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

.inspector-color {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 1px solid var(--border);
  cursor: pointer;
  padding: 0;
  background: none;
}

.inspector-color::-webkit-color-swatch-wrapper { padding: 2px; }
.inspector-color::-webkit-color-swatch { border: none; border-radius: 4px; }

.no-selection-msg {
  padding: 24px 16px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}

/* ─── Toast Notifications ──────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 20px;
  font-size: 14px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  animation: slideIn 0.3s ease;
  min-width: 240px;
}

.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--danger); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ─── MCP Link Modal ───────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  max-width: 560px;
  width: 90%;
}

.modal-box h3 {
  font-size: 18px;
  margin-bottom: 16px;
}

.modal-code {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  font-family: 'SF Mono', Menlo, monospace;
  font-size: 12px;
  overflow-x: auto;
  margin-bottom: 16px;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.6;
}

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

/* ─── Project List ─────────────────────────────────────────────────────── */
.project-bar {
  display: flex;
  align-items: center;
  gap: 8px;
}

.project-select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  color: var(--text-primary);
  font-size: 13px;
  max-width: 160px;
}

/* ─── Project Picker Modal ─────────────────────────────────────────────── */
.project-picker-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 90%;
  max-width: 760px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.project-picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.project-picker-header h3 {
  font-size: 18px;
  font-weight: 600;
}

.project-picker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.project-card {
  border-radius: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--bg-tertiary);
  position: relative;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.project-card.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.project-card-thumb {
  width: 100%;
  height: 130px;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.project-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-card-thumb .thumb-placeholder {
  color: var(--text-secondary);
  font-size: 11px;
  opacity: 0.5;
}

.project-card-thumb .thumb-loading {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.project-card-info {
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.project-card-info .card-name {
  flex: 1;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-card-info .card-date {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.project-card-active-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
}

.project-card-menu {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 10;
  opacity: 0;
  transition: opacity 0.15s;
}

.project-card:hover .project-card-menu {
  opacity: 1;
}

.project-card-menu-btn {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}

.project-card-menu-btn:hover {
  background: rgba(0, 0, 0, 0.8);
}

.project-card-dropdown {
  position: absolute;
  top: 36px;
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 160px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  z-index: 20;
  overflow: hidden;
}

.project-card-dropdown button {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-primary);
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
}

.project-card-dropdown button:hover {
  background: rgba(255, 255, 255, 0.06);
}

.project-card-dropdown button.danger {
  color: var(--danger);
}

.project-card-dropdown button.danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

.project-card-dropdown .dropdown-divider {
  height: 1px;
  background: var(--border);
  margin: 2px 0;
}

/* ─── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero h1 { font-size: 36px; }
  .steps { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .editor-layout { grid-template-columns: 1fr; }
  .layers-panel, .inspector-panel { display: none; }
}