/* ==========================================================================
   PATTER DESIGN SYSTEM (Neo-Brutalist Technical Minimalism)
   https://www.getpatter.com/
   Typography: IBM Plex Sans (Display/UI) + JetBrains Mono (Code/Data)
   Colors: Ink (#000), Cream (#f6f6f4), Warm Peach (#df9367, #fff8ef)
   Borders: 1.5px & 2px Solid Black with Hard Offset Box-Shadows
   ========================================================================== */

:root {
  /* 1. Typography */
  --font-sans: 'IBM Plex Sans', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* 2. Color Tokens (WCAG AA Compliant) */
  /* Ink & Neutrals */
  --ink-primary: #000000;
  --ink-inverse: #ffffff;
  --ink-dark: #1a1a1a;
  --ink-body: #2b2b2b;
  --ink-muted: #595959;
  --ink-faint: #767676;
  --divider: #000000;
  --divider-light: #e5e5e5;

  /* Surfaces */
  --surface-base: #ffffff;
  --surface-cream: #f6f6f4;
  --surface-warm: #fff8ef;
  --surface-cool: #ebf0f5;
  --surface-code: #fafaf8;
  --surface-nav: rgba(255, 255, 255, 0.94);

  /* Signature Peach Accent */
  --accent-peach: #df9367;
  --accent-peach-deep: #c97a4c;
  --accent-peach-light: #efc5ac;
  --accent-peach-cream: #fff8ef;

  /* Status & Tech */
  --status-green: #2ea043;
  --status-blue: #3b82f6;

  /* 3. Hard Neo-Brutalist Borders & Shadows */
  --border-default: 1.5px solid #000000;
  --border-thick: 2px solid #000000;

  --shadow-btn: 0 4px 0 0 #000000;
  --shadow-btn-hover: 0 6px 0 0 #000000;
  --shadow-btn-press: 0 2px 0 0 #000000;

  --shadow-card-sm: 0 4px 0 0 #000000;
  --shadow-card-md: 12px 12px 0 -1px #f6f6f4, 12px 12px 0 0 #000000;
  --shadow-window: 0 16px 0 -8px #f6f6f4, 0 16px 0 -6px #000000;

  /* 4. Layout & Geometry */
  --radius-none: 0px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-grid: 20px;
  --radius-pill: 9999px;
  --max-width: 1320px;

  /* 5. Systematic 4-Unit Spacing Scale (Matching DESIGN.md) */
  --space-2xs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 80px;

  /* 6. Tactile Neo-Brutalist Transitions */
  --transition-tactile: 120ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --ink-primary: #f5f5f5;
  --ink-inverse: #000000;
  --ink-dark: #ffffff;
  --ink-body: #d1d5db;
  --ink-muted: #a3a3a3;
  --ink-faint: #737373;
  --divider: #383d47;
  --divider-light: #2d3139;

  --surface-base: #0e1015;
  --surface-cream: #161920;
  --surface-warm: #1f1c19;
  --surface-cool: #131a24;
  --surface-code: #12141a;
  --surface-nav: rgba(14, 16, 21, 0.94);

  --accent-peach: #df9367;
  --accent-peach-deep: #f3a579;
  --accent-peach-light: #4d3121;
  --accent-peach-cream: #261911;

  --border-default: 1.5px solid #f5f5f5;
  --border-thick: 2px solid #f5f5f5;

  --shadow-btn: 0 4px 0 0 #000000;
  --shadow-btn-hover: 0 6px 0 0 #000000;
  --shadow-btn-press: 0 2px 0 0 #000000;

  --shadow-card-sm: 0 4px 0 0 #000000;
  --shadow-card-md: 8px 8px 0 -1px #161920, 8px 8px 0 0 #000000;
  --shadow-window: 0 16px 0 -8px #161920, 0 16px 0 -6px #000000;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink-primary: #f5f5f5;
    --ink-inverse: #000000;
    --ink-dark: #ffffff;
    --ink-body: #d1d5db;
    --ink-muted: #a3a3a3;
    --ink-faint: #737373;
    --divider: #383d47;
    --divider-light: #2d3139;

    --surface-base: #0e1015;
    --surface-cream: #161920;
    --surface-warm: #1f1c19;
    --surface-cool: #131a24;
    --surface-code: #12141a;
    --surface-nav: rgba(14, 16, 21, 0.94);

    --accent-peach: #df9367;
    --accent-peach-deep: #f3a579;
    --accent-peach-light: #4d3121;
    --accent-peach-cream: #261911;

    --border-default: 1.5px solid #f5f5f5;
    --border-thick: 2px solid #f5f5f5;

    --shadow-btn: 0 4px 0 0 #000000;
    --shadow-btn-hover: 0 6px 0 0 #000000;
    --shadow-btn-press: 0 2px 0 0 #000000;

    --shadow-card-sm: 0 4px 0 0 #000000;
    --shadow-card-md: 8px 8px 0 -1px #161920, 8px 8px 0 0 #000000;
    --shadow-window: 0 16px 0 -8px #161920, 0 16px 0 -6px #000000;
  }
}

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

html {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-body);
  background-color: var(--surface-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  background-color: var(--surface-base);
}

/* Global Dot-Grid Background Canvas */
.dot-grid-canvas {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 680px;
  background-image: radial-gradient(circle at 1px 1px, #dad8de 1.25px, transparent 0);
  background-size: 18px 18px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 20%, rgba(0, 0, 0, 1) 20%, rgba(0, 0, 0, 0) 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 20%, rgba(0, 0, 0, 1) 20%, rgba(0, 0, 0, 0) 100%);
  pointer-events: none;
  z-index: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  color: var(--ink-primary);
  font-weight: 700;
  line-height: 1.2;
}

code, pre, .font-mono {
  font-family: var(--font-mono);
}

a {
  color: inherit;
  text-decoration: none;
  transition: all var(--transition-tactile);
}

button {
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  background: none;
}

input, select {
  font-family: var(--font-sans);
}

/* Accessible tactile focus-visible ring */
:focus-visible {
  outline: 2px solid var(--accent-peach-deep);
  outline-offset: 2px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   COMPONENT BLUEPRINTS: BUTTONS & EYEBROW TAGS
   ========================================================================== */

/* 1. Buttons (Pill shape, 1.5px solid #000, font-weight 600) */
.btn-patter,
.nav-btn,
.btn-icon-text {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-pill);
  border: var(--border-default);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  background-color: var(--surface-base);
  color: var(--ink-primary);
  box-shadow: var(--shadow-btn);
  transition: all var(--transition-tactile);
  text-decoration: none;
  user-select: none;
}

.btn-patter:hover,
.nav-btn:hover,
.btn-icon-text:hover {
  background-color: var(--surface-warm);
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn-hover);
}

.btn-patter:active,
.nav-btn:active,
.btn-icon-text:active {
  transform: translateY(2px);
  box-shadow: var(--shadow-btn-press);
}

/* Primary Button (Black fill, turns Peach #df9367 on hover) */
.btn-patter.primary,
.nav-btn.primary,
.btn-icon-text.primary {
  background-color: var(--ink-primary);
  color: var(--surface-base);
  border: var(--border-default);
  box-shadow: var(--shadow-btn);
}

.btn-patter.primary:hover,
.nav-btn.primary:hover,
.btn-icon-text.primary:hover {
  background-color: var(--accent-peach);
  color: #000000;
  border-color: #000000;
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn-hover);
}

.btn-patter.primary:active,
.nav-btn.primary:active,
.btn-icon-text.primary:active {
  transform: translateY(2px);
  box-shadow: var(--shadow-btn-press);
}

/* 2. Eyebrow Tags (Pill, 12px monospace uppercase, 1.5px black border, 6px peach dot) */
.eyebrow-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.25rem 0.8rem;
  border-radius: var(--radius-pill);
  border: var(--border-default);
  background-color: var(--accent-peach-cream);
  color: var(--ink-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1;
}

.eyebrow-tag::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-peach);
  flex-shrink: 0;
}

.eyebrow-tag.cool {
  background-color: var(--surface-cool);
}

.eyebrow-tag.cool::before {
  background-color: var(--status-blue);
}

.eyebrow-tag.live {
  background-color: var(--surface-cream);
}

.eyebrow-tag.live::before {
  background-color: var(--status-green);
}

/* ==========================================================================
   SITE NAVIGATION
   ========================================================================== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--surface-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: var(--border-default);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink-primary);
}

.terminal-prompt {
  color: var(--accent-peach-deep);
  font-weight: 800;
}

.nav-status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--ink-primary);
  background-color: var(--surface-cream);
  border: var(--border-default);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-pill);
}

.status-dot,
.pulse-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  background-color: var(--status-green);
  border-radius: 50%;
  border: 1px solid var(--ink-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Theme Toggle Component (Patter Neo-Brutalist Segmented) */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  background-color: var(--surface-cream);
  border: var(--border-default);
  border-radius: var(--radius-pill);
  padding: 2px;
  gap: 2px;
}

.theme-toggle-option {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--ink-muted);
  background: transparent;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--transition-tactile);
  min-height: 32px;
}

.theme-toggle-option:hover {
  color: var(--ink-primary);
}

.theme-toggle-option.active {
  background-color: var(--ink-primary);
  color: var(--surface-base);
  border-color: var(--ink-primary);
}

[data-theme="dark"] .theme-toggle-option.active {
  background-color: var(--accent-peach);
  color: #000000;
  border-color: var(--accent-peach);
}

/* ==========================================================================
   HERO SECTION (High-Density Neo-Brutalist Layout)
   ========================================================================== */
.hero-section {
  padding: var(--space-3xl) 0 var(--space-2xl) 0;
  border-bottom: var(--border-default);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 290px;
  gap: var(--space-2xl);
  align-items: start;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.hero-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  align-items: center;
}

.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--ink-primary);
  line-height: 1.08;
}

.hero-role {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--ink-body);
  font-weight: 450;
  max-width: 820px;
}

/* Terminal / Window Mockup Credo Box */
.hero-credo-box {
  background-color: var(--surface-code);
  border: var(--border-thick);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-xl);
  box-shadow: var(--shadow-window);
  position: relative;
  overflow: hidden;
}

.credo-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--divider);
}

.credo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--ink-primary);
}
.credo-dot.red { background-color: #ff5f56; }
.credo-dot.yellow { background-color: #ffbd2e; }
.credo-dot.green { background-color: #27c93f; }

.credo-text {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-dark);
  max-width: 65ch;
}

.credo-text strong {
  color: var(--accent-peach-deep);
}

.credo-author {
  display: block;
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
}

/* Avatar Card */
.hero-avatar-card {
  background-color: var(--surface-cream);
  border: var(--border-thick);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: var(--shadow-card-md);
  transition: all var(--transition-tactile);
}

.hero-avatar-card:hover {
  transform: translateY(-2px);
}

.avatar-img-wrap {
  position: relative;
  width: 116px;
  height: 116px;
  margin-bottom: var(--space-md);
}

.avatar-img {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-md);
  border: var(--border-thick);
  object-fit: cover;
  background-color: #ffffff;
}

.avatar-online-dot {
  position: absolute;
  bottom: -4px;
  right: -4px;
  width: 16px;
  height: 16px;
  background-color: var(--status-green);
  border: 2px solid var(--ink-primary);
  border-radius: 50%;
}

.avatar-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ink-primary);
  letter-spacing: -0.01em;
}

.avatar-handle {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-muted);
  margin-bottom: var(--space-sm);
}

.avatar-location {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-body);
  background-color: var(--surface-base);
  border: var(--border-default);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

/* Avatar Card Action Buttons */
.avatar-actions {
  display: flex;
  gap: var(--space-xs);
  width: 100%;
  margin-top: var(--space-md);
}

.avatar-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: var(--border-default);
  padding: 8px 12px;
  min-height: 38px;
  background-color: var(--surface-base);
  color: var(--ink-primary);
  box-shadow: 0 2px 0 0 #000000;
  transition: all var(--transition-tactile);
}

.avatar-btn:hover {
  background-color: var(--accent-peach);
  color: #000000;
  transform: translateY(-1px);
  box-shadow: 0 3px 0 0 #000000;
}

.avatar-btn.primary {
  background-color: var(--ink-primary);
  color: var(--surface-base);
}

.avatar-btn.primary:hover {
  background-color: var(--accent-peach);
  color: #000000;
}

/* Hero CTA Action Buttons */
.hero-actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  margin-top: var(--space-xs);
}

.hero-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: var(--border-default);
  padding: 10px 20px;
  min-height: 44px;
  cursor: pointer;
  box-shadow: var(--shadow-btn);
  transition: all var(--transition-tactile);
  background-color: var(--surface-base);
  color: var(--ink-primary);
}

.hero-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn-hover);
}

.hero-cta-btn:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-btn-press);
}

.hero-cta-btn.primary {
  background-color: var(--ink-primary);
  color: var(--surface-base);
}

.hero-cta-btn.primary:hover {
  background-color: var(--accent-peach);
  color: #000000;
}

.hero-cta-btn.secondary {
  background-color: var(--surface-warm);
  border-color: var(--border-color);
  color: var(--ink-primary);
}

.hero-cta-btn.secondary:hover {
  background-color: var(--accent-peach);
  color: #000000;
}

.hero-cta-btn.tertiary {
  background-color: var(--surface-cool);
  color: var(--ink-primary);
}

.hero-cta-btn.tertiary:hover {
  background-color: var(--accent-peach);
  color: #000000;
}

/* Hero Social Icons Row */
.hero-socials-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  align-items: center;
  margin-top: var(--space-2xs);
}

.social-icon-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-body);
  background-color: var(--surface-base);
  border: var(--border-default);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  min-height: 36px;
  text-decoration: none;
  box-shadow: 0 2px 0 0 #000000;
  transition: all var(--transition-tactile);
}

.social-icon-pill:hover {
  transform: translateY(-2px);
  background-color: var(--accent-peach);
  color: #000000;
  box-shadow: 0 4px 0 0 #000000;
}

.social-icon-pill svg {
  flex-shrink: 0;
}

/* Search Box Clear Button */
.search-clear-btn {
  position: absolute;
  right: 2.3rem;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background-color: var(--surface-cream);
  color: var(--ink-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  transition: all var(--transition-tactile);
  z-index: 2;
}

.search-clear-btn:hover {
  background-color: var(--accent-peach);
  color: #000000;
  border-color: #000000;
}

/* Screen Reader / Crawler Only Semantic Index */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* Accessible Static Crawler Index (SEO / GEO / AEO For Non-JS Spiders) */
.seo-crawler-index {
  position: absolute !important;
  left: -9999px !important;
  top: auto !important;
  width: 1000px !important;
  height: auto !important;
  overflow: hidden !important;
  clip: auto !important;
  clip-path: none !important;
  white-space: normal !important;
}

.seo-crawler-index h2,
.seo-crawler-index p,
.seo-crawler-index ul,
.seo-crawler-index li {
  width: auto;
  max-width: 100%;
  white-space: normal;
  overflow: hidden;
}

/* ==========================================================================
   METRICS RIBBON (Deterministic Hard Neo-Brutalist Tiles)
   ========================================================================== */
.metrics-strip {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-md);
  padding: var(--space-xl) 0;
  border-bottom: var(--border-default);
}

.metric-card {
  background-color: var(--surface-base);
  border: var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  box-shadow: var(--shadow-card-sm);
  transition: all var(--transition-tactile);
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  position: relative;
}

.metric-card::after {
  content: "FILTER";
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--accent-peach-deep);
  opacity: 0;
  transform: translateX(-4px);
  transition: all var(--transition-tactile);
}

.metric-card:hover {
  background-color: var(--surface-warm);
  transform: translateY(-2px);
  box-shadow: 0 6px 0 0 #000000;
}

.metric-card:hover::after {
  opacity: 1;
  transform: translateX(0);
}

.metric-number {
  font-family: var(--font-mono);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--ink-primary);
  letter-spacing: -0.04em;
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

.metric-number .sub {
  font-size: 12px;
  color: var(--ink-muted);
  font-weight: 500;
}

.metric-label {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-body);
  font-weight: 700;
}

/* ==========================================================================
   FEATURE GRID BLUEPRINT (3-Column Unified Grid, Collapsed Cell Borders)
   Outer border 1.5px black, 20px corner radius, collapsed internal borders
   ========================================================================== */
.section-wrapper {
  padding: var(--space-3xl) 0;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-sm);
  border-bottom: var(--border-default);
  gap: var(--space-sm);
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink-primary);
}

.section-desc {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-muted);
}

/* 3-Column Unified Feature Grid Container */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: var(--border-default);
  border-radius: var(--radius-grid);
  overflow: hidden;
  background-color: var(--ink-primary); /* collapsed 1.5px internal borders via gap */
  gap: 1.5px;
  box-shadow: var(--shadow-window);
}

.featured-card {
  background-color: var(--surface-cream);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  position: relative;
  transition: background-color var(--transition-tactile);
}

.featured-card:hover {
  background-color: var(--surface-base);
}

.card-top-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
}

.card-title-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ink-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  letter-spacing: -0.02em;
}

.card-title:hover {
  color: var(--accent-peach-deep);
}

.card-category-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-muted);
  letter-spacing: 0.02em;
  font-weight: 600;
}

.card-badges {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Neo-Brutalist Badges */
.pill {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
  border: var(--border-default);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  white-space: nowrap;
  line-height: 1;
}

.pill.lang {
  background-color: var(--surface-cool);
  color: var(--ink-primary);
}

.pill.public {
  background-color: var(--surface-cream);
  color: var(--status-green);
}

.pill.private {
  background-color: var(--accent-peach-cream);
  color: var(--accent-peach-deep);
}

.pill.fork {
  background-color: var(--surface-base);
  color: var(--ink-body);
}

.card-desc {
  font-size: 14px;
  color: var(--ink-body);
  line-height: 1.6;
  flex-grow: 1;
}

/* Vibe Fact Box (Warm Peach Aesthetic) */
.card-fact-box {
  background-color: var(--surface-warm);
  border: 1.5px solid var(--accent-peach-light);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--ink-dark);
  line-height: 1.55;
}

.fact-title {
  font-family: var(--font-mono);
  font-weight: 800;
  display: block;
  margin-bottom: var(--space-2xs);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-peach-deep);
}

.card-footer-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  margin-top: auto;
  border-top: 1px solid var(--divider);
}

.action-btn-group {
  display: flex;
  gap: var(--space-xs);
}

/* ==========================================================================
   INTERACTIVE REPO EXPLORER & CONTROLS
   ========================================================================== */
.controls-sticky-bar {
  position: sticky;
  top: 64px;
  z-index: 90;
  background-color: var(--surface-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--space-md) var(--space-lg);
  border-bottom: var(--border-default);
  margin-bottom: var(--space-xl);
}

.controls-main-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
}

.search-box-wrap {
  position: relative;
  flex-grow: 1;
  max-width: 560px;
}

.search-input {
  width: 100%;
  padding: 10px 44px 10px 40px;
  min-height: 44px;
  background-color: var(--surface-base);
  border: var(--border-default);
  border-radius: var(--radius-pill);
  font-size: 14px;
  color: var(--ink-primary);
  box-shadow: 0 2px 0 0 #000000;
  transition: all var(--transition-tactile);
}

.search-input:focus {
  outline: none;
  box-shadow: var(--shadow-btn);
  border-color: var(--ink-primary);
  background-color: var(--surface-warm);
}

.search-icon-left {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-muted);
  pointer-events: none;
}

.search-shortcut-badge {
  position: absolute;
  right: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  background-color: var(--surface-cream);
  border: var(--border-default);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  color: var(--ink-primary);
  pointer-events: none;
}

.filter-toggles-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Segmented Buttons */
.segmented-group {
  display: inline-flex;
  background-color: var(--surface-cream);
  border: var(--border-default);
  padding: 3px;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 0 0 #000000;
}

.segment-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  color: var(--ink-body);
  min-height: 36px;
  cursor: pointer;
  transition: all var(--transition-tactile);
}

.segment-btn:hover {
  color: var(--ink-primary);
}

.segment-btn.active {
  background-color: var(--ink-primary);
  color: var(--surface-base);
}

[data-theme="dark"] .segment-btn.active {
  background-color: var(--accent-peach);
  color: #000000;
}

.select-wrap select {
  min-height: 44px;
  padding: 10px 36px 10px 16px;
  background-color: var(--surface-base);
  border: var(--border-default);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-primary);
  cursor: pointer;
  appearance: none;
  box-shadow: 0 2px 0 0 #000000;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23000000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  transition: all var(--transition-tactile);
}

.select-wrap select:focus {
  outline: none;
  box-shadow: var(--shadow-btn);
}

/* Category Filter Pills Bar */
.category-pills-bar {
  display: flex;
  gap: var(--space-xs);
  overflow-x: auto;
  padding: 4px 2px 10px 2px;
  margin-bottom: var(--space-sm);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.category-pills-bar::-webkit-scrollbar {
  height: 4px;
}

.category-pills-bar::-webkit-scrollbar-thumb {
  background-color: var(--ink-faint);
  border-radius: var(--radius-pill);
}

.cat-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 6px 14px;
  min-height: 40px;
  background-color: var(--surface-base);
  border: var(--border-default);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-primary);
  white-space: nowrap;
  box-shadow: 0 2px 0 0 #000000;
  cursor: pointer;
  transition: all var(--transition-tactile);
}

.cat-pill-btn:hover {
  background-color: var(--surface-warm);
  transform: translateY(-1px);
  box-shadow: 0 3px 0 0 #000000;
}

.cat-pill-btn.active {
  background-color: var(--ink-primary);
  color: var(--surface-base);
  box-shadow: 0 3px 0 0 #000000;
}

[data-theme="dark"] .cat-pill-btn.active {
  background-color: var(--accent-peach);
  color: #000000;
  border-color: var(--accent-peach);
}

.cat-pill-btn .count {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--surface-cream);
  color: var(--ink-primary);
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--divider-light);
}

.cat-pill-btn.active .count {
  background: var(--accent-peach);
  color: #000000;
  border-color: #000000;
}

/* Filter Summary Row */
.filter-summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-muted);
}

.active-filter-tags {
  font-weight: 600;
  color: var(--ink-primary);
}

.reset-filter-btn {
  color: var(--accent-peach-deep);
  font-weight: 700;
  text-decoration: underline;
  cursor: pointer;
}

/* ==========================================================================
   ALL REPOSITORY CARDS GRID (Deterministic 1.5px Borders & Hard Offset)
   ========================================================================== */
.repos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-3xl);
}

.repo-card {
  background-color: var(--surface-base);
  border: var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  box-shadow: var(--shadow-card-sm);
  transition: all var(--transition-tactile);
}

.repo-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 0 0 #000000;
  background-color: var(--surface-cream);
}

.repo-card.featured-border {
  border: var(--border-thick);
  box-shadow: var(--shadow-card-md);
  background: linear-gradient(180deg, #fffcf7 0%, #ffffff 100%);
}

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

.repo-name-link {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--ink-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  word-break: break-word;
  letter-spacing: -0.01em;
}

.repo-name-link:hover {
  color: var(--accent-peach-deep);
}

.repo-desc {
  font-size: 14px;
  color: var(--ink-body);
  line-height: 1.6;
  flex-grow: 1;
}

/* Accordion Component */
.repo-accordion {
  border: var(--border-default);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--surface-code);
}

.accordion-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-dark);
  background-color: var(--surface-cream);
  border-bottom: 1px solid transparent;
  transition: background-color var(--transition-tactile);
  letter-spacing: 0.02em;
}

.accordion-toggle:hover {
  background-color: var(--accent-peach-cream);
  color: var(--ink-primary);
}

.accordion-toggle.open {
  border-bottom: var(--border-default);
}

.accordion-body {
  display: none;
  padding: var(--space-md);
  font-size: 13px;
  color: var(--ink-body);
  line-height: 1.55;
}

.accordion-body.open {
  display: block;
}

.accordion-item-group {
  margin-bottom: var(--space-sm);
}

.accordion-item-group:last-child {
  margin-bottom: 0;
}

.accordion-item-label {
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--ink-primary);
  display: block;
  font-size: 12px;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-2xs);
}

.repo-card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  margin-top: auto;
  border-top: 1px solid var(--divider);
}

/* Empty State */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem 1.5rem;
  background-color: var(--surface-cream);
  border: var(--border-default);
  border-radius: var(--radius-grid);
  box-shadow: var(--shadow-card-sm);
}

.empty-title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.empty-desc {
  font-size: 0.95rem;
  color: var(--ink-muted);
  margin-bottom: 1.5rem;
}

/* ==========================================================================
   MODAL / DRAWER (Window Mockup Blueprint)
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background-color: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.modal-backdrop.open {
  display: flex;
}

.modal-window {
  background-color: var(--surface-base);
  border: var(--border-thick);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-window);
  max-width: 720px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  border-bottom: var(--border-default);
  padding-bottom: var(--space-md);
  gap: var(--space-md);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ink-primary);
  margin: 0;
  letter-spacing: -0.02em;
}

.modal-category-badge {
  margin-top: var(--space-2xs);
  font-size: 12px;
}

.modal-close-btn {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  line-height: 1;
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: var(--border-default);
  background-color: var(--surface-cream);
  color: var(--ink-primary);
  box-shadow: 0 2px 0 0 #000000;
  cursor: pointer;
  transition: all var(--transition-tactile);
}

.modal-close-btn:hover {
  background-color: var(--accent-peach);
  color: #000000;
  border-color: #000000;
  transform: translateY(-1px);
}

.modal-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.modal-section-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
}

.modal-desc-text,
.modal-why-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-body);
}

.modal-code-block {
  background-color: var(--surface-code);
  border: var(--border-default);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-dark);
  user-select: all;
  overflow-x: auto;
}

.modal-actions {
  margin-top: var(--space-xs);
  gap: var(--space-sm);
}

/* ==========================================================================
   TOAST NOTIFICATION
   ========================================================================== */
.toast-notice {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 300;
  background-color: var(--ink-primary);
  color: var(--ink-inverse);
  border: var(--border-default);
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 4px 0 0 var(--accent-peach);
  display: none;
  align-items: center;
  gap: 0.6rem;
}

.toast-notice.show {
  display: flex;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  margin-top: auto;
  border-top: var(--border-default);
  background-color: var(--surface-cream);
  padding: var(--space-3xl) 0 var(--space-2xl) 0;
  font-size: 14px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer-brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink-primary);
  margin-bottom: var(--space-2xs);
}

.footer-brand-desc {
  color: var(--ink-muted);
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
}

.footer-badge-group {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.footer-badge {
  font-size: 11px;
  padding: 2px 8px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  border-top: 1px solid var(--divider);
  padding-top: var(--space-lg);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-muted);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--accent-peach-deep);
  text-decoration: underline;
}

/* ==========================================================================
   RESPONSIVE DESIGN (High-Fidelity Viewport Handling)
   ========================================================================== */
@media (max-width: 1024px) {
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .metrics-strip {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }
  .hero-section {
    padding: var(--space-2xl) 0 var(--space-xl) 0;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  .hero-avatar-card {
    width: 100%;
    flex-direction: row;
    text-align: left;
    gap: var(--space-md);
    padding: var(--space-md);
  }
  .avatar-img-wrap {
    margin-bottom: 0;
    width: 88px;
    height: 88px;
    flex-shrink: 0;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .featured-grid {
    grid-template-columns: 1fr;
    border-radius: var(--radius-lg);
  }
  .featured-card {
    padding: var(--space-lg);
  }
  .metrics-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }
  .controls-sticky-bar {
    top: 56px;
    padding: var(--space-sm) var(--space-md);
  }
  .controls-main-row {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-sm);
  }
  .search-box-wrap {
    max-width: 100%;
  }
  .repos-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
  }
  .repo-card {
    padding: var(--space-md);
  }
  .modal-backdrop {
    padding: var(--space-md);
  }
  .modal-window {
    padding: var(--space-lg);
    gap: var(--space-md);
  }
  .site-footer {
    padding: var(--space-2xl) 0 var(--space-xl) 0;
  }
}

@media (max-width: 480px) {
  .hero-avatar-card {
    flex-direction: column;
    text-align: center;
  }
  .avatar-img-wrap {
    margin-bottom: var(--space-sm);
  }
  .metrics-strip {
    grid-template-columns: 1fr 1fr;
  }
  .filter-toggles-wrap {
    flex-direction: column;
    width: 100%;
  }
  .segmented-group {
    width: 100%;
    display: flex;
  }
  .segment-btn {
    flex: 1;
  }
  .select-wrap {
    width: 100%;
  }
  .select-wrap select {
    width: 100%;
  }
}

/* Flagship Monospace Badge */
.pill-badge-flagship {
  display: inline-block;
  font-size: 11px;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--accent-peach-deep);
  color: var(--accent-peach-deep);
  background-color: var(--surface-warm);
  margin-right: 0.45rem;
  vertical-align: middle;
  letter-spacing: 0.04em;
  font-weight: 700;
}

/* Dark Theme Button Contrast */
[data-theme="dark"] .hero-cta-btn.primary {
  background-color: #f5f5f5;
  color: #000000;
}
[data-theme="dark"] .avatar-btn.primary {
  background-color: #f5f5f5;
  color: #000000;
}
[data-theme="dark"] .social-icon-pill {
  box-shadow: 0 2px 0 0 #000000;
  border-color: var(--border-color);
}

/* ==========================================================================
   PERFORMANCE & ACCESSIBILITY GUARDRAILS (taste-skill section 6.B)
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .pulse-dot {
    animation: none !important;
  }
}