:root, [data-theme="light"] {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.35rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(1.85rem,  1.2rem  + 2vw,    2.75rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    4rem);
  
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem; --space-20: 5rem;

  --color-bg:             #f8fafc;
  --color-surface:        #ffffff;
  --color-surface-2:      #f1f5f9;
  --color-surface-offset: #e2e8f0;
  --color-divider:        #e2e8f0;
  --color-border:         #cbd5e1;
  --color-text:           #0f172a;
  --color-text-muted:     #475569;
  --color-text-faint:     #94a3b8;
  --color-text-inverse:   #ffffff;
  --color-primary:        #ea580c;
  --color-primary-hover:  #c2410c;
  --color-primary-highlight: rgba(234, 88, 12, 0.1);
  --color-secondary:      #0284c7;
  --color-accent-warm:    #d97706;

  --radius-sm: 0.375rem; --radius-md: 0.5rem;
  --radius-lg: 0.75rem;  --radius-xl: 1rem; --radius-full: 9999px;
  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
  
  --content-narrow: 720px; --content-default: 1080px; --content-wide: 1200px;
  --font-display: 'Cabinet Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Satoshi', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, monospace;
}

[data-theme="dark"] {
  --color-bg:             #0b0f17;
  --color-surface:        #131924;
  --color-surface-2:      #1c2536;
  --color-surface-offset: #162030;
  --color-divider:        #243044;
  --color-border:         #2a384e;
  --color-text:           #e2e8f0;
  --color-text-muted:     #94a3b8;
  --color-text-faint:     #64748b;
  --color-text-inverse:   #0b0f17;
  --color-primary:        #f97316;
  --color-primary-hover:  #fb923c;
  --color-primary-highlight: rgba(249, 115, 22, 0.15);
  --color-secondary:      #38bdf8;
  --color-accent-warm:    #fbbf24;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
  --shadow-md: 0 6px 18px rgba(0,0,0,0.4);
  --shadow-lg: 0 16px 36px rgba(0,0,0,0.5);
}

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

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* HEADER */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 250, 252, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-4) 0;
}

[data-theme="dark"] header {
  background: rgba(11, 15, 23, 0.85);
}

.container {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 var(--space-6);
  width: 100%;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-lg);
}

.brand-logo {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #ea580c, #f59e0b);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: 0 2px 8px rgba(234, 88, 12, 0.3);
}

.brand-badge {
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-family: var(--font-body);
  font-weight: 700;
  border: 1px solid var(--color-primary-highlight);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle, .btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-interactive);
  font-size: var(--text-sm);
  border: 1px solid transparent;
}

.theme-toggle {
  background: var(--color-surface-2);
  color: var(--color-text);
  border-color: var(--color-border);
}

.theme-toggle:hover {
  background: var(--color-surface-offset);
  border-color: var(--color-primary);
}

.btn-secondary {
  background: var(--color-surface-2);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-offset);
  border-color: var(--color-primary);
}

/* HERO */
.hero {
  padding: var(--space-12) 0 var(--space-8);
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  font-weight: 700;
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--color-text) 30%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  max-width: var(--content-narrow);
  margin: 0 auto var(--space-8);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

/* SEARCH BAR */
.search-box {
  position: relative;
  max-width: 600px;
  margin: 0 auto var(--space-12);
  width: 100%;
}

.search-box i {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-faint);
}

.search-input {
  width: 100%;
  padding: var(--space-3) var(--space-4) var(--space-3) 2.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  font-size: var(--text-base);
  font-family: var(--font-body);
  outline: none;
  transition: var(--transition-interactive);
  box-shadow: var(--shadow-sm);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}

/* SECTIONS */
.category-section {
  margin-bottom: var(--space-16);
}

.section-intro {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.section-desc {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: 860px;
  line-height: 1.6;
}

/* GRID: 2 CARDS PER ROW */
.section-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

@media (max-width: 860px) {
  .section-grid {
    grid-template-columns: 1fr;
  }
}

/* CARD STYLING */
.repo-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-interactive);
  box-shadow: var(--shadow-sm);
}

.repo-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

/* THUMBNAIL CONTAINER */
.card-thumbnail {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-4);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
}

.card-thumbnail svg {
  display: block;
  width: 100%;
  height: auto;
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.card-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.card-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.25;
}

.card-desc {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.55;
  margin-bottom: var(--space-4);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.tag {
  font-size: 0.72rem;
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  border: 1px solid var(--color-divider);
}

.card-bottom {
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: auto;
}

.repo-link {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  transition: var(--transition-interactive);
}

.repo-link:hover {
  background: var(--color-primary);
  color: #ffffff;
}

.docs-link {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.docs-link:hover {
  color: var(--color-text);
  text-decoration: underline;
}

/* FOOTER */
footer {
  margin-top: auto;
  border-top: 1px solid var(--color-divider);
  padding: var(--space-10) 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  text-align: center;
  background: var(--color-surface);
}

footer a {
  color: var(--color-primary);
  text-decoration: none;
}

footer a:hover { text-decoration: underline; }