/* DataForge Modern Design System */
:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-surface: #1e293b;
  --bg-input: #0a0e17;
  --border-color: #334155;
  --border-focus: #6366f1;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent-primary: #6366f1;
  --accent-hover: #4f46e5;
  --accent-glow: rgba(99, 102, 241, 0.25);
  --success: #10b981;
  --error: #ef4444;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
  background: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
}

.logo-icon {
  background: linear-gradient(135deg, #6366f1, #38bdf8);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.logo-badge {
  font-size: 0.65rem;
  background: var(--bg-surface);
  color: #38bdf8;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  margin-left: 0.4rem;
  border: 1px solid var(--border-color);
}

.nav-tabs {
  display: flex;
  background: var(--bg-primary);
  padding: 0.3rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  gap: 0.25rem;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.tab-btn:hover {
  color: var(--text-main);
  background: var(--bg-surface);
}

.tab-btn.active {
  background: var(--accent-primary);
  color: #fff;
  box-shadow: 0 0 15px var(--accent-glow);
}

.tab-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.6;
}

.privacy-tag {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--success);
  background: rgba(16, 185, 129, 0.1);
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  border: 1px solid rgba(16, 185, 129, 0.25);
  font-weight: 500;
}

/* Main Content */
.main-content {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  background: var(--bg-secondary);
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.tool-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.action-buttons {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.95rem;
  font-size: 0.825rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  font-family: inherit;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 12px var(--accent-glow);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: #2a374a;
  border-color: var(--text-dim);
}

.select-control {
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.45rem 0.8rem;
  font-size: 0.825rem;
  border-radius: var(--radius-sm);
  outline: none;
  cursor: pointer;
}

.select-control:focus {
  border-color: var(--border-focus);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  font-size: 0.875rem;
  z-index: 1000;
  transition: var(--transition);
}

.toast.success { border-color: var(--success); color: #34d399; }
.toast.error { border-color: var(--error); color: #f87171; }
.toast.hidden { opacity: 0; pointer-events: none; transform: translateY(10px); }

/* Split Editor Grid */
.editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  flex: 1;
  min-height: 520px;
}

.editor-column {
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.8rem;
}

.editor-title {
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: 0.02em;
}

.editor-stats {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.output-actions {
  display: flex;
  gap: 0.5rem;
}

.icon-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.75rem;
  transition: var(--transition);
}

.icon-btn:hover {
  color: #fff;
  border-color: var(--border-focus);
  background: var(--bg-primary);
}

.editor-body {
  flex: 1;
  display: flex;
}

textarea {
  width: 100%;
  height: 100%;
  min-height: 480px;
  background: var(--bg-input);
  color: #e2e8f0;
  border: none;
  resize: vertical;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  outline: none;
  white-space: pre;
  tab-size: 2;
}

textarea:focus {
  background: #080c14;
}

/* Monetization Container */
.ad-container {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.4), rgba(17, 24, 39, 0.7));
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  text-align: center;
}

.ad-placeholder {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.ad-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  background: var(--bg-primary);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.ad-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  flex: 1;
}

.ad-link {
  color: #facc15;
  background: rgba(250, 204, 21, 0.1);
  border: 1px solid rgba(250, 204, 21, 0.25);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 0.825rem;
  font-weight: 600;
  transition: var(--transition);
}

.ad-link:hover {
  background: rgba(250, 204, 21, 0.2);
  transform: translateY(-1px);
}

/* Info Section (SEO) */
.info-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  margin-top: 1rem;
}

.info-heading {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
  background: linear-gradient(135deg, #fff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-focus);
}

.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.feature-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.feature-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  padding: 1.5rem;
  margin-top: 2rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--text-main);
}

/* Responsive */
@media (max-width: 900px) {
  .editor-grid {
    grid-template-columns: 1fr;
  }
  .nav-container {
    flex-direction: column;
    align-items: stretch;
  }
  .privacy-tag {
    display: none;
  }
}