/* ============================================
   GRIDLINE ARCHITECTURE DESIGN SYSTEM
   Justice Devendra Kumar Upadhyaya
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

/* --- Design Tokens --- */
:root {
  /* Colors */
  --color-bg: #fafafa;
  --color-bg-alt: #f5f4f2;
  --color-text: #1a1a1a;
  --color-text-secondary: #4a4a4a;
  --color-text-muted: #777777;
  --color-grid: rgba(180, 180, 180, 0.25);
  --color-grid-strong: rgba(160, 160, 160, 0.35);
  --color-border: #d4d4d4;
  --color-border-light: #e8e8e8;
  --color-accent: #7a1a1a;
  --color-accent-light: rgba(122, 26, 26, 0.08);
  --color-white: #ffffff;
  --color-overlay: rgba(26, 26, 26, 0.03);

  /* Typography */
  --font-heading: 'Playfair Display', 'Georgia', serif;
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 0.9375rem;
  --text-md: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.75rem;
  --text-3xl: 2.25rem;
  --text-4xl: 3rem;
  --text-5xl: 3.75rem;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Grid */
  --grid-columns: 12;
  --grid-gutter: 24px;
  --grid-max-width: 1200px;
  --grid-cell-size: 80px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  position: relative;
  min-height: 100vh;
}

/* --- Gridline Background Overlay --- */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    repeating-linear-gradient(
      90deg,
      var(--color-grid) 0px,
      var(--color-grid) 1px,
      transparent 1px,
      transparent var(--grid-cell-size)
    ),
    repeating-linear-gradient(
      0deg,
      var(--color-grid) 0px,
      var(--color-grid) 1px,
      transparent 1px,
      transparent var(--grid-cell-size)
    );
}

/* Stronger grid lines every 4th line */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    repeating-linear-gradient(
      90deg,
      var(--color-grid-strong) 0px,
      var(--color-grid-strong) 1px,
      transparent 1px,
      transparent calc(var(--grid-cell-size) * 4)
    ),
    repeating-linear-gradient(
      0deg,
      var(--color-grid-strong) 0px,
      var(--color-grid-strong) 1px,
      transparent 1px,
      transparent calc(var(--grid-cell-size) * 4)
    );
}

/* --- All Content Above Grid --- */
body > * {
  position: relative;
  z-index: 1;
}

/* --- Container / Grid Layout --- */
.container {
  max-width: var(--grid-max-width);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
}

.grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-columns), 1fr);
  gap: var(--grid-gutter);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Span utilities */
.col-span-full { grid-column: 1 / -1; }
.col-span-8 { grid-column: span 8; }
.col-span-6 { grid-column: span 6; }
.col-span-4 { grid-column: span 4; }
.col-span-3 { grid-column: span 3; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: var(--text-4xl); letter-spacing: -0.02em; }
h2 { font-size: var(--text-2xl); letter-spacing: -0.01em; }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* --- Top Navigation --- */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(250, 250, 250, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

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

.nav-brand {
  font-family: var(--font-heading);
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.nav-brand span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: var(--space-sm) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background-color: var(--color-text);
  transition: all var(--transition-base);
}

/* --- Sections --- */
.section {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.section:last-of-type {
  border-bottom: none;
}

.section-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
  display: inline-block;
}

.section-title {
  margin-bottom: var(--space-2xl);
}

/* --- Grid Row (Structured Data Display) --- */
.grid-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--grid-gutter);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border-light);
  align-items: baseline;
}

.grid-row:last-child {
  border-bottom: none;
}

.grid-row-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.grid-row-value {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

/* --- Data Table --- */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  text-align: left;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 2px solid var(--color-border);
  background-color: var(--color-overlay);
}

.data-table td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border-light);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  vertical-align: top;
}

.data-table tr:hover td {
  background-color: var(--color-accent-light);
}

/* --- Identity Block (Homepage hero) --- */
.identity-block {
  padding: var(--space-4xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.identity-block h1 {
  font-size: var(--text-5xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.identity-block .title-designation {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-xl);
}

.identity-block .intro-text {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-text-secondary);
  max-width: 720px;
}

/* --- Expandable Item --- */
.expandable-item {
  border-bottom: 1px solid var(--color-border-light);
}

.expandable-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) 0;
  cursor: pointer;
  user-select: none;
  transition: color var(--transition-fast);
}

.expandable-header:hover {
  color: var(--color-accent);
}

.expandable-header h4 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
}

.expandable-icon {
  font-size: var(--text-lg);
  transition: transform var(--transition-base);
  color: var(--color-text-muted);
  flex-shrink: 0;
  margin-left: var(--space-lg);
}

.expandable-item.open .expandable-icon {
  transform: rotate(45deg);
}

.expandable-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.expandable-item.open .expandable-body {
  max-height: 600px;
  padding-bottom: var(--space-xl);
}

.expandable-body-inner {
  padding: 0 0 var(--space-md) 0;
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  line-height: 1.8;
}

/* --- Password Gateway --- */
.gateway {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  flex-direction: column;
}

.gateway-box {
  text-align: center;
  max-width: 380px;
  width: 100%;
  padding: var(--space-2xl);
}

.gateway-box h1 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-sm);
}

.gateway-box .subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2xl);
}

.gateway-input-group {
  margin-bottom: var(--space-md);
}

.gateway-input {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-body);
  font-size: var(--text-base);
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  color: var(--color-text);
  text-align: center;
  letter-spacing: 0.15em;
  outline: none;
  transition: border-color var(--transition-fast);
}

.gateway-input:focus {
  border-color: var(--color-text);
}

.gateway-input::placeholder {
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
}

.gateway-btn {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-white);
  background-color: var(--color-text);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.gateway-btn:hover {
  background-color: var(--color-accent);
}

.gateway-error {
  font-size: var(--text-sm);
  color: var(--color-accent);
  margin-top: var(--space-md);
  min-height: 20px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.gateway-error.visible {
  opacity: 1;
}

/* --- Page Header --- */
.page-header {
  padding: var(--space-3xl) 0 var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-sm);
}

.page-header .page-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 600px;
}

/* --- Document Block (for Resources) --- */
.doc-block {
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.doc-block-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.doc-block-meta {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.doc-block-desc {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- Chronological Entry (for Media) --- */
.chrono-entry {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--grid-gutter);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.chrono-date {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.chrono-content h4 {
  font-size: var(--text-base);
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.chrono-content p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* --- Contact Form --- */
.contact-form {
  max-width: 600px;
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-md);
  font-family: var(--font-body);
  font-size: var(--text-base);
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-text);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit {
  padding: var(--space-md) var(--space-2xl);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-white);
  background-color: var(--color-text);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.form-submit:hover {
  background-color: var(--color-accent);
}

/* --- Contact Info Block --- */
.contact-info-block {
  padding: var(--space-xl);
  background-color: var(--color-overlay);
  border: 1px solid var(--color-border-light);
}

.contact-info-block h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-lg);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-info-item:last-child {
  margin-bottom: 0;
}

.contact-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.contact-detail-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.contact-detail-value {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

/* --- Social Icons --- */
.social-links {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.social-link:hover {
  border-color: var(--color-text);
  color: var(--color-text);
}

.social-link svg {
  width: 16px;
  height: 16px;
}

/* --- Footer --- */
.site-footer {
  background-color: var(--color-text);
  color: #ffffff;
  padding: var(--space-2xl) 0;
  margin-top: var(--space-3xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--grid-gutter);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #ffffff;
  margin-bottom: var(--space-lg);
}

.footer-col p,
.footer-col a {
  font-size: var(--text-sm);
  color: #ffffff;
  line-height: 1.8;
  margin-bottom: var(--space-xs);
}

.footer-col a:hover {
  color: #ffffff;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-xl);
  font-size: var(--text-xs);
  color: #ffffff;
}

.footer-bottom p {
  color: #ffffff;
  margin-bottom: 0;
}

.footer-bottom a {
  color: #ffffff;
}

.footer-bottom a:hover {
  color: #ffffff;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #ffffff;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  border-color: rgba(255, 255, 255, 0.5);
  color: #ffffff;
}

.footer-social svg {
  width: 14px;
  height: 14px;
}

/* --- Fade In Animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Page Transition --- */
.page-fade {
  opacity: 1;
  transition: opacity 0.4s ease;
}

.page-fade.out {
  opacity: 0;
}

/* --- Image Styling --- */
.img-contained {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  filter: grayscale(15%);
}

/* --- Card Component --- */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background-color: var(--color-accent);
  transition: height var(--transition-base);
}

.card:hover {
  border-color: var(--color-border);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
  transform: translateY(-2px);
}

.card:hover::before {
  height: 100%;
}

.card-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  border: 1px solid rgba(122, 26, 26, 0.12);
}

.card-icon svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
}

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

.card h4 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: 0;
  line-height: 1.7;
}

.card .card-meta {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-top: var(--space-md);
  display: inline-block;
}

/* Card with large icon */
.card-lg-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-lg);
  color: var(--color-accent);
}

.card-lg-icon svg {
  width: 48px;
  height: 48px;
  stroke-width: 1.2;
}

/* Stat Card */
.stat-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
}

.stat-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.stat-card .stat-icon {
  width: 36px;
  height: 36px;
  margin: 0 auto var(--space-md);
  color: var(--color-accent);
}

.stat-card .stat-icon svg {
  width: 36px;
  height: 36px;
  stroke-width: 1.2;
}

.stat-card .stat-number {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.stat-card .stat-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

/* Document Card (for Resources) */
.doc-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  padding: var(--space-xl);
  display: flex;
  gap: var(--space-lg);
  transition: all var(--transition-base);
}

.doc-card:hover {
  border-color: var(--color-border);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.doc-card-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  border: 1px solid rgba(122, 26, 26, 0.12);
}

.doc-card-icon svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
}

.doc-card-content h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.doc-card-content .doc-card-meta {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-sm);
}

.doc-card-content p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* Inline icon utility */
.inline-icon {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

.inline-icon svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--color-accent);
  stroke-width: 1.5;
}

/* Section icon header */
.section-icon-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.section-icon-header .section-header-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  border: 1px solid rgba(122, 26, 26, 0.12);
  flex-shrink: 0;
}

.section-icon-header .section-header-icon svg {
  width: 22px;
  height: 22px;
  stroke-width: 1.5;
}

/* --- Utility --- */
.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.pt-xl { padding-top: var(--space-xl); }

/* --- Responsive --- */
@media (max-width: 1024px) {
  :root {
    --grid-columns: 8;
    --grid-cell-size: 60px;
  }

  h1 { font-size: var(--text-3xl); }
  .identity-block h1 { font-size: var(--text-3xl); }

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

@media (max-width: 768px) {
  :root {
    --grid-columns: 4;
    --grid-cell-size: 40px;
    --grid-gutter: 16px;
  }

  h1 { font-size: var(--text-2xl); }
  h2 { font-size: var(--text-xl); }
  .identity-block h1 { font-size: var(--text-2xl); }
  .identity-block { padding: var(--space-2xl) 0; }
  .section { padding: var(--space-2xl) 0; }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: rgba(250, 250, 250, 0.98);
    backdrop-filter: blur(8px);
    padding: var(--space-lg);
    gap: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border-light);
  }

  .nav-links a:last-child {
    border-bottom: none;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .grid-row {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }

  .chrono-entry {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .data-table th,
  .data-table td {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .col-span-8,
  .col-span-6,
  .col-span-4,
  .col-span-3 {
    grid-column: 1 / -1;
  }
}