/* ============================================
   TxtAMsg — Dribbble-Quality AI Tools Affiliate
   Palette: Fitness App (Pace) + custom AI blend
   Typography: Lexend + JetBrains Mono
   ============================================ */

/* --- Design Tokens --- */
:root {
  /* Colors — dark AI/tech palette */
  --bg:        #05060B;
  --surface:   #0D1020;
  --surface-2: #141728;
  --text:      #FBFBFC;
  --text-secondary: #C8CAD0;
  --muted:     #9DA9CE;
  --accent:    #3459D4;
  --accent-light: #5B7BF0;
  --accent-glow: rgba(52, 89, 212, 0.25);
  --secondary: #122159;
  --neutral:   #505665;
  --border:    rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);

  /* Semantic */
  --green:  #34D399;
  --orange: #F59E0B;
  --purple: #A78BFA;
  --blue-soft: #60A5FA;
  --red:    #EF4444;

  /* Typography */
  --font-heading: 'Lexend', system-ui, sans-serif;
  --font-body:    'Lexend', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* Scale */
  --text-display: clamp(2.5rem, 5vw, 4.5rem);
  --text-h1: clamp(2rem, 4vw, 3.5rem);
  --text-h2: clamp(1.5rem, 3vw, 2.5rem);
  --text-h3: clamp(1.25rem, 2vw, 1.5rem);
  --text-body: clamp(0.9375rem, 1.125vw, 1.0625rem);
  --text-small: 0.875rem;
  --text-xs: 0.75rem;

  /* Weight */
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;

  /* Leading */
  --leading-tight: 1.1;
  --leading-snug: 1.25;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  /* Tracking */
  --tracking-tight: -0.03em;
  --tracking-normal: 0;
  --tracking-wide: 0.08em;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;
  --space-4xl: 7.5rem;

  /* Layout */
  --container: 1280px;
  --container-padding: 2rem;

  /* Radius */
  --radius-sm:   0.5rem;
  --radius-md:   1rem;
  --radius-lg:   1.25rem;
  --radius-xl:   1.5rem;
  --radius-full: 999px;
}


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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--text-secondary);
  background: var(--bg);
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug);
  color: var(--text);
}

.display {
  font-size: var(--text-display);
  font-weight: var(--weight-extrabold);
  line-height: var(--leading-tight);
  letter-spacing: -0.04em;
}

h1 { font-size: var(--text-h1); font-weight: var(--weight-bold); }
h2 { font-size: var(--text-h2); font-weight: var(--weight-semibold); }
h3 { font-size: var(--text-h3); font-weight: var(--weight-semibold); }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.mono { font-family: var(--font-mono); font-size: 0.875em; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

section {
  padding: var(--space-3xl) 0;
}


/* --- Utility --- */
.label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--accent-light);
  display: block;
  margin-bottom: 0.75rem;
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--purple) 50%, var(--blue-soft) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.section-header h2 {
  margin-bottom: 0.75rem;
}

.section-desc {
  color: var(--muted);
  max-width: 540px;
  margin: 0 auto;
  font-size: var(--text-body);
}


/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--text);
}
.btn-primary:hover {
  background: var(--accent-light);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-hover);
}
.btn-ghost:hover {
  border-color: var(--muted);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--text-xs);
}


/* --- Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(5, 6, 11, 0.85);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  box-shadow: 0 1px 0 var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  max-width: var(--container);
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: var(--weight-bold);
  font-size: 1.125rem;
  color: var(--text);
}

.nav-logo-icon {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: var(--weight-medium);
  color: var(--muted);
  transition: color 0.2s;
}
.nav-link:hover {
  color: var(--text);
}

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-mobile-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
}

@media (max-width: 768px) {
  .nav-links, .nav > .btn { display: none; }
  .nav-mobile-toggle { display: flex; }
}


/* --- Hero --- */
.hero {
  position: relative;
  padding: 10rem 0 5rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
}
.hero-glow--1 {
  width: 600px;
  height: 600px;
  background: var(--accent);
  top: -200px;
  right: -100px;
  opacity: 0.15;
}
.hero-glow--2 {
  width: 400px;
  height: 400px;
  background: var(--purple);
  bottom: -100px;
  left: -100px;
  opacity: 0.1;
}

.hero-grid-pattern {
  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% 60% at 50% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
}

.hero-content {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  background: rgba(52, 89, 212, 0.12);
  border: 1px solid rgba(52, 89, 212, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--accent-light);
  margin-bottom: 1.5rem;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-subtitle {
  font-size: var(--text-body);
  color: var(--muted);
  max-width: 480px;
  margin: 1.25rem 0 2rem;
  line-height: var(--leading-relaxed);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.stat { text-align: left; }

.stat-number {
  font-size: var(--text-h3);
  font-weight: var(--weight-bold);
  color: var(--text);
  display: block;
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--muted);
}


/* --- Hero Visual (Tool Card) --- */
.hero-visual {
  position: relative;
}

.hero-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.hero-card--main {
  background: var(--surface);
  border: 1px solid var(--border);
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-card-dots {
  display: flex;
  gap: 6px;
}
.hero-card-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--neutral);
}
.hero-card-dots span:first-child { background: #EF4444; }
.hero-card-dots span:nth-child(2) { background: #F59E0B; }
.hero-card-dots span:last-child { background: #34D399; }

.hero-card-title {
  color: var(--muted);
  font-size: var(--text-xs);
}

.hero-card-body {
  padding: 0.75rem;
}

.hero-card-tool {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.875rem 1rem;
  border-radius: var(--radius-md);
  transition: background 0.2s;
}
.hero-card-tool:hover {
  background: rgba(255, 255, 255, 0.03);
}
.hero-card-tool strong {
  color: var(--text);
  font-weight: var(--weight-semibold);
  font-size: var(--text-small);
}
.tool-meta {
  font-size: var(--text-xs);
  color: var(--muted);
  margin-top: 2px;
}

.tool-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-weight: var(--weight-bold);
  font-size: var(--text-xs);
  color: var(--text);
  flex-shrink: 0;
}
.tool-avatar--lg { width: 52px; height: 52px; font-size: var(--text-small); }
.tool-avatar--blue   { background: linear-gradient(135deg, #1E40AF, #3B82F6); }
.tool-avatar--green  { background: linear-gradient(135deg, #065F46, #10B981); }
.tool-avatar--purple { background: linear-gradient(135deg, #5B21B6, #8B5CF6); }
.tool-avatar--orange { background: linear-gradient(135deg, #92400E, #F59E0B); }

.tool-score {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-small);
  font-weight: var(--weight-bold);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.tool-score--lg { font-size: 1.125rem; padding: 0.375rem 1rem; }
.tool-score--high { background: rgba(52, 211, 153, 0.12); color: var(--green); }
.tool-score--mid  { background: rgba(245, 158, 11, 0.12); color: var(--orange); }

/* Floating card */
.hero-card--float {
  position: absolute;
  bottom: -20px;
  left: -30px;
  background: var(--surface-2);
  border: 1px solid var(--border-hover);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  animation: float 4s ease-in-out infinite;
  z-index: 2;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

.float-label {
  font-size: var(--text-xs);
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.float-tool {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  font-weight: var(--weight-medium);
}

.float-badge {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--green);
  background: rgba(52, 211, 153, 0.12);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full);
}


/* --- Logo Bar --- */
.logo-section {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.logo-label {
  text-align: center;
  font-size: var(--text-xs);
  color: var(--neutral);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: 1.5rem;
}

.logo-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3.5rem;
  flex-wrap: wrap;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: var(--weight-bold);
  color: var(--neutral);
  letter-spacing: var(--tracking-tight);
  opacity: 0.5;
  transition: opacity 0.2s;
}
.logo-text:hover { opacity: 0.8; }


/* --- Bento Grid --- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.bento-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--border);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s ease,
              border-color 0.3s ease;
  position: relative;
}
.bento-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
  border-color: var(--border-hover);
}

.bento-card--wide { grid-column: span 2; }

.bento-badge {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--accent-light);
  background: rgba(52, 89, 212, 0.12);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
}

.bento-tool-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.bento-tool-header--compact { margin-bottom: 1rem; }

.bento-desc {
  color: var(--muted);
  font-size: var(--text-small);
  line-height: var(--leading-normal);
  margin-bottom: 1.25rem;
}

.bento-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tag {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
}

/* --- Comparison bars --- */
.bento-comparison h3 {
  margin-bottom: 0.5rem;
}

.comparison-bars {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.comparison-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.comparison-label {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--muted);
  width: 90px;
  flex-shrink: 0;
  text-align: right;
}

.comparison-track {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.comparison-fill {
  height: 22px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: var(--weight-medium);
  color: var(--text);
  transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.comparison-fill--blue   { background: linear-gradient(90deg, rgba(52, 89, 212, 0.3), rgba(52, 89, 212, 0.6)); }
.comparison-fill--green  { background: linear-gradient(90deg, rgba(16, 185, 129, 0.3), rgba(16, 185, 129, 0.6)); }
.comparison-fill--purple { background: linear-gradient(90deg, rgba(139, 92, 246, 0.3), rgba(139, 92, 246, 0.6)); }


/* --- Features Grid --- */
.section-methodology {
  border-top: 1px solid var(--border);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.3s;
}
.feature-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--secondary);
  display: grid;
  place-items: center;
  margin-bottom: 1.25rem;
  color: var(--accent-light);
}

.feature-card h3 {
  margin-bottom: 0.625rem;
}

.feature-card p {
  font-size: var(--text-small);
  color: var(--muted);
  line-height: var(--leading-normal);
}


/* --- Alternating Feature Rows --- */
.section-reviews {
  border-top: 1px solid var(--border);
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: var(--space-3xl) 0;
}

.feature-row + .feature-row {
  border-top: 1px solid var(--border);
}

.feature-row--reverse {
  direction: rtl;
}
.feature-row--reverse > * {
  direction: ltr;
}

.feature-row-text h3 {
  margin: 0.5rem 0 1rem;
  font-size: var(--text-h3);
}

.feature-row-text p {
  color: var(--muted);
  margin-bottom: 1.25rem;
  line-height: var(--leading-relaxed);
}

.review-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-xs);
  color: var(--neutral);
  margin-bottom: 1.25rem;
}
.review-meta .mono {
  color: var(--accent-light);
  font-weight: var(--weight-bold);
}


/* --- Terminal / IDE Previews --- */
.review-preview {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
}

.preview-terminal-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.875rem 1.25rem;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border);
}
.preview-terminal-bar span:nth-child(-n+3) {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.preview-terminal-bar span:first-child { background: #EF4444; }
.preview-terminal-bar span:nth-child(2) { background: #F59E0B; }
.preview-terminal-bar span:nth-child(3) { background: #34D399; }
.preview-terminal-title {
  margin-left: auto;
  font-size: var(--text-xs);
  color: var(--neutral);
}

.preview-terminal-body {
  padding: 1.5rem;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.t-muted  { color: var(--neutral); }
.t-accent { color: var(--accent-light); }
.t-green  { color: var(--green); }
.t-purple { color: var(--purple); }
.t-yellow { color: var(--orange); }

/* IDE Preview */
.preview-ide {
  display: grid;
  grid-template-columns: 140px 1fr;
  min-height: 220px;
}

.preview-ide-sidebar {
  background: rgba(255, 255, 255, 0.02);
  border-right: 1px solid var(--border);
  padding: 1rem 0;
}

.ide-file {
  padding: 0.375rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--neutral);
  cursor: pointer;
  transition: background 0.15s;
}
.ide-file:hover { background: rgba(255, 255, 255, 0.03); }
.ide-file.active {
  background: rgba(52, 89, 212, 0.1);
  color: var(--accent-light);
  border-left: 2px solid var(--accent);
}

.preview-ide-main {
  padding: 1rem 1.25rem;
}

.ide-line {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.9;
  color: var(--text-secondary);
}
.ide-line .t-muted {
  display: inline-block;
  width: 20px;
  text-align: right;
  margin-right: 1rem;
  color: var(--neutral);
  user-select: none;
}


/* --- Newsletter CTA --- */
.section-newsletter {
  border-top: 1px solid var(--border);
}

.cta-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.cta-block::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.cta-content {
  position: relative;
}

.cta-content h2 {
  margin-bottom: 0.75rem;
}

.cta-content > p {
  color: var(--muted);
  margin-bottom: 2rem;
  max-width: 420px;
  line-height: var(--leading-relaxed);
}

.newsletter-form {
  max-width: 420px;
}

.newsletter-input-group {
  display: flex;
  gap: 0.5rem;
}

.newsletter-input-group input {
  flex: 1;
  padding: 0.75rem 1.25rem;
  background: var(--bg);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-full);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--text-small);
  outline: none;
  transition: border-color 0.2s;
}
.newsletter-input-group input::placeholder { color: var(--neutral); }
.newsletter-input-group input:focus { border-color: var(--accent); }

.newsletter-note {
  font-size: var(--text-xs);
  color: var(--neutral);
  margin-top: 0.75rem;
}

/* CTA visual card */
.cta-visual {
  position: relative;
}

.cta-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.cta-card-header {
  font-size: var(--text-xs);
  color: var(--neutral);
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}

.cta-card-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.5rem 0;
  font-size: var(--text-small);
  color: var(--text-secondary);
}

.cta-card-bullet {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--neutral);
  flex-shrink: 0;
  margin-top: 7px;
}

.cta-card-bullet--accent {
  background: var(--accent-light);
  box-shadow: 0 0 8px var(--accent-glow);
}


/* --- Categories Grid --- */
.section-categories {
  border-top: 1px solid var(--border);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.category-card {
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.3s ease;
  display: block;
}
.category-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}
.category-card:hover .category-icon {
  background: var(--accent);
}

.category-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--secondary);
  display: grid;
  place-items: center;
  margin-bottom: 1.25rem;
  color: var(--accent-light);
  transition: background 0.3s;
}

.category-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.125rem;
}

.category-card p {
  font-size: var(--text-small);
  color: var(--muted);
  line-height: var(--leading-normal);
  margin-bottom: 1rem;
}

.category-count {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent-light);
}


/* --- Footer --- */
.footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--border);
  margin-top: var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
}

.footer-desc {
  color: var(--neutral);
  font-size: var(--text-small);
  line-height: var(--leading-normal);
  margin-top: 0.75rem;
  max-width: 280px;
}

.footer-column h4 {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: 1.25rem;
  color: var(--neutral);
}

.footer-column a {
  display: block;
  color: var(--muted);
  font-size: var(--text-small);
  padding: 0.375rem 0;
  transition: color 0.2s;
}
.footer-column a:hover { color: var(--text); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  margin-top: var(--space-2xl);
  border-top: 1px solid var(--border);
  font-size: var(--text-xs);
  color: var(--neutral);
}


/* --- Animations --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
}
.animate-in:nth-child(1) { animation-delay: 0ms; }
.animate-in:nth-child(2) { animation-delay: 120ms; }
.animate-in:nth-child(3) { animation-delay: 240ms; }
.animate-in:nth-child(4) { animation-delay: 360ms; }
.animate-in:nth-child(5) { animation-delay: 480ms; }
.animate-in:nth-child(6) { animation-delay: 600ms; }

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}


/* --- Responsive --- */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { max-width: 500px; }
  .bento-grid { grid-template-columns: 1fr 1fr; }
  .bento-card--wide { grid-column: span 2; }
  .cta-block { grid-template-columns: 1fr; gap: 2rem; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 1.25rem;
  }

  .hero { padding: 7rem 0 3rem; }
  .hero-stats { gap: 2rem; }
  .hero-card--float { display: none; }

  .bento-grid { grid-template-columns: 1fr; }
  .bento-card--wide { grid-column: span 1; }

  .features-grid { grid-template-columns: 1fr; }

  .feature-row,
  .feature-row--reverse {
    grid-template-columns: 1fr;
    direction: ltr;
    gap: 2rem;
  }

  .cta-block { padding: var(--space-xl); }

  .categories-grid { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }

  .newsletter-input-group { flex-direction: column; }

  .comparison-row { flex-direction: column; gap: 0.5rem; }
  .comparison-label { text-align: left; width: auto; }

  .preview-ide { grid-template-columns: 1fr; }
  .preview-ide-sidebar { display: none; }
}