/* ============================================================
   ConverText — Landing Page Styles
   ============================================================ */

/* --- Animated Background --- */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: 
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(124, 58, 237, 0.12), transparent),
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(59, 130, 246, 0.06), transparent),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(239, 68, 68, 0.06), transparent),
    var(--bg-primary);
}

.bg-grid::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 20%, transparent 70%);
}

.bg-grid::after {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.08), transparent 70%);
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  animation: pulse-glow 8s ease-in-out infinite alternate;
}

@keyframes pulse-glow {
  0% { opacity: 0.5; transform: translateX(-50%) scale(1); }
  100% { opacity: 1; transform: translateX(-50%) scale(1.2); }
}

/* --- Header / Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-md) 0;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(6, 6, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.navbar-logo {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.navbar-title {
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.navbar-title span {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.navbar-link {
  padding: 8px 16px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.navbar-link:hover {
  color: var(--text-primary);
  background: var(--bg-surface-hover);
}

.navbar-link.active {
  color: var(--text-primary);
}

.navbar-privacy {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--success);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: var(--radius-full);
}

.navbar-privacy svg {
  width: 14px;
  height: 14px;
}

/* --- Hero Section --- */
.hero {
  padding-top: 160px;
  padding-bottom: var(--space-4xl);
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  animation: fadeInUp 0.6s ease-out;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero h1 .line {
  display: block;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.7;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

/* --- Section --- */
.section {
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-sm);
}

.section-header p {
  color: var(--text-secondary);
  font-size: var(--text-lg);
  max-width: 500px;
  margin: 0 auto;
}

/* --- Tools Grid --- */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
}

/* --- Tool Card --- */
.tool-card {
  position: relative;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all var(--transition-base);
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: transparent;
  -webkit-mask: 
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  transition: background var(--transition-base);
  pointer-events: none;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: transparent;
  box-shadow: var(--shadow-lg);
}

.tool-card.pdf:hover {
  background: var(--pdf-surface);
  box-shadow: var(--shadow-glow-pdf);
}

.tool-card.pdf:hover::before {
  background: var(--pdf-gradient);
}

.tool-card.img:hover {
  background: var(--img-surface);
  box-shadow: var(--shadow-glow-img);
}

.tool-card.img:hover::before {
  background: var(--img-gradient);
}

.tool-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  font-size: 24px;
  transition: transform var(--transition-spring);
}

.tool-card:hover .tool-card-icon {
  transform: scale(1.1) rotate(-3deg);
}

.tool-card.pdf .tool-card-icon {
  background: var(--pdf-surface);
  color: var(--pdf-primary);
}

.tool-card.img .tool-card-icon {
  background: var(--img-surface);
  color: var(--img-primary);
}

.tool-card-title {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: 4px;
}

.tool-card-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.5;
}

.tool-card-arrow {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  opacity: 0;
  transform: translate(-8px, 8px);
  transition: all var(--transition-base);
}

.tool-card:hover .tool-card-arrow {
  opacity: 1;
  transform: translate(0, 0);
}

/* --- Privacy Section --- */
.privacy-section {
  padding: var(--space-3xl) 0 var(--space-4xl);
}

.privacy-card {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), rgba(6, 182, 212, 0.05));
  border: 1px solid rgba(16, 185, 129, 0.12);
  border-radius: var(--radius-xl);
}

.privacy-card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  border-radius: var(--radius-lg);
  background: rgba(16, 185, 129, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.privacy-card h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-sm);
}

.privacy-card p {
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto var(--space-lg);
  font-size: var(--text-base);
  line-height: 1.7;
}

.privacy-features {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.privacy-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--success);
}

.privacy-feature svg {
  width: 18px;
  height: 18px;
}

/* --- Footer --- */
.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.footer p {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.footer a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero {
    padding-top: 120px;
    padding-bottom: var(--space-2xl);
  }

  .hero-actions {
    flex-direction: column;
  }

  .tools-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--space-sm);
  }

  .tool-card {
    padding: var(--space-md);
  }

  .tool-card-icon {
    width: 40px;
    height: 40px;
    font-size: 20px;
    margin-bottom: var(--space-sm);
  }

  .navbar-links {
    display: none;
  }

  .privacy-features {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .tools-grid {
    grid-template-columns: 1fr 1fr;
  }

  .container {
    padding: 0 var(--space-md);
  }
}