/* ─── 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;
  --accent-green: #22c55e;
  --accent-blue: #3b82f6;
  --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-green), var(--accent-blue));
  -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: 52px;
  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;
}

/* 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-green), var(--accent-blue));
  -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: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.editor-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  height: 48px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.editor-toolbar .logo {
  font-size: 16px;
  font-weight: 700;
  margin-right: 16px;
  background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
  -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;
  height: 36px;
  padding: 0 12px;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  transition: all 0.15s;
  font-size: 13px;
  white-space: nowrap;
}

.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; }

.editor-canvas {
  flex: 1;
  overflow: hidden;
}

/* ─── 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 Select ──────────────────────────────────────────────────── */
.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: 180px;
}

/* User menu */
.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
}

.user-menu-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 13px;
}

.user-menu-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

/* ─── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero h1 { font-size: 36px; }
  .steps { grid-template-columns: 1fr; }
}