/* ==========================================================================
   ARBAD.ONE: Dark Monolith Design System
   ========================================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Background Scale */
  --bg-primary: #0a0a0a;
  --bg-elevated: #111111;
  --bg-surface: #1a1a1a;
  --bg-hover: #1f1f1f;

  /* Border */
  --border-subtle: #1c1c1c;
  --border-default: #222222;
  --border-strong: #333333;

  /* Text Scale */
  --text-primary: #e5e5e5;
  --text-secondary: #999999;
  --text-muted: #555555;
  --text-inverse: #0a0a0a;

  /* Accent */
  --accent: #d4a843;
  --accent-dim: #8b7330;
  --accent-glow: rgba(212, 168, 67, 0.15);
  --accent-glow-strong: rgba(212, 168, 67, 0.3);

  /* Fonts */
  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-prose: 'Lora', Georgia, 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 720px;
  --nav-height: 72px;

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

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

/* ---------- 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);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

::selection {
  background: var(--accent);
  color: var(--text-inverse);
}

/* ---------- Layout Containers ---------- */
.section-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section-container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-4xl) 0;
}

.section + .section {
  border-top: 1px solid var(--border-subtle);
}

/* ---------- Section Header ---------- */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-2xl);
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  transition: color var(--transition-fast);
}

.section-link:hover {
  color: var(--text-primary);
}

/* ---------- Page Headers ---------- */
.page-header {
  padding: calc(var(--nav-height) + var(--space-4xl)) 0 var(--space-3xl);
  border-bottom: 1px solid var(--border-subtle);
}

.page-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-sm);
}

.page-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-base);
}

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

.site-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  transition: color var(--transition-fast);
  flex: 0 0 80px;
}

.site-logo:hover {
  color: var(--accent);
}

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

.nav-link {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link--active {
  color: var(--text-primary);
}

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

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

.nav-toggle-bar {
  width: 24px;
  height: 1.5px;
  background: var(--text-primary);
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212, 168, 67, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 168, 67, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: var(--space-xl);
}

.hero-greeting {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease forwards;
}

.hero-name {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease 0.15s forwards;
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: 1.125rem;
  font-weight: 300;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease 0.3s forwards;
}

.hero-description {
  font-family: var(--font-prose);
  font-size: 1.125rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: var(--space-2xl);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease 0.45s forwards;
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease 0.6s forwards;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--text-inverse);
}

.btn-primary:hover {
  background: #e0b54d;
  color: var(--text-inverse);
  box-shadow: 0 0 30px var(--accent-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
}

.btn-ghost:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

/* ==========================================================================
   POST CARDS
   ========================================================================== */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-xl);
}

.post-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.post-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.post-card:hover {
  border-color: var(--border-default);
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
}

.post-card:hover::before {
  opacity: 1;
}

.post-card-link {
  color: inherit;
  text-decoration: none;
  display: block;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  font-size: 0.8125rem;
}

.post-card-category {
  color: var(--accent);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.75rem;
}

.post-card-date,
.post-card-reading-time {
  color: var(--text-muted);
}

.post-card-date::before {
  content: '';
}

.post-card-reading-time::before {
  content: '·';
  margin-right: var(--space-sm);
}

.post-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  line-height: 1.3;
  transition: color var(--transition-fast);
}

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

.post-card-excerpt {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- Post List (Blog page) ---------- */
.post-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.post-list-item {
  transition: opacity var(--transition-base);
}

.post-list-item[data-hidden="true"] {
  display: none;
}

/* ---------- Category Filters ---------- */
.category-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.filter-chip {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-default);
  border-radius: 100px;
  padding: 0.4rem 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  letter-spacing: 0.02em;
}

.filter-chip:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.filter-chip--active {
  color: var(--text-inverse);
  background: var(--accent);
  border-color: var(--accent);
}

.filter-chip--active:hover {
  color: var(--text-inverse);
}

/* ==========================================================================
   SINGLE POST
   ========================================================================== */
.post {
  padding-top: var(--nav-height);
}

.post-header {
  padding: var(--space-4xl) 0 var(--space-2xl);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-2xl);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  font-size: 0.875rem;
}

.post-category {
  color: var(--accent);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.75rem;
}

.post-date {
  color: var(--text-muted);
}

.post-reading-time {
  color: var(--text-muted);
}

.post-reading-time::before {
  content: '·';
  margin-right: var(--space-sm);
}

.post-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-md);
}

.post-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  font-family: var(--font-prose);
  font-style: italic;
}

/* Post Body: Prose Styling */
.post-body {
  font-family: var(--font-prose);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--text-primary);
  padding-bottom: var(--space-3xl);
}

.post-body h2 {
  font-size: 1.75rem;
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.02em;
}

.post-body h3 {
  font-size: 1.375rem;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.post-body p {
  margin-bottom: var(--space-lg);
}

.post-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--accent-dim);
}

.post-body a:hover {
  text-decoration-color: var(--accent);
}

.post-body blockquote {
  border-left: 3px solid var(--accent);
  padding: var(--space-lg) var(--space-xl);
  margin: var(--space-2xl) 0;
  background: var(--bg-elevated);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--text-secondary);
}

.post-body blockquote p:last-child {
  margin-bottom: 0;
}

.post-body pre {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  overflow-x: auto;
  margin: var(--space-2xl) 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
}

.post-body code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--bg-surface);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--accent);
}

.post-body pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

.post-body ul,
.post-body ol {
  padding-left: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.post-body li {
  margin-bottom: var(--space-sm);
}

.post-body img {
  border-radius: var(--radius-md);
  margin: var(--space-2xl) 0;
}

.post-body hr {
  border: none;
  height: 1px;
  background: var(--border-subtle);
  margin: var(--space-3xl) 0;
}

/* Post Tags */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border-subtle);
}

.post-tag {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  background: var(--bg-surface);
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  transition: all var(--transition-fast);
}

.post-tag:hover {
  color: var(--accent);
  background: var(--accent-glow);
}

/* Post Navigation */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  padding: var(--space-2xl) 0 var(--space-4xl);
  border-top: 1px solid var(--border-subtle);
  margin-top: var(--space-xl);
}

.post-nav-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-lg);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.post-nav-item:hover {
  border-color: var(--accent-dim);
  box-shadow: 0 0 20px var(--accent-glow);
}

.post-nav-next {
  text-align: right;
  grid-column: 2;
}

.post-nav-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.post-nav-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 600;
}

/* ==========================================================================
   PROJECT CARDS
   ========================================================================== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-xl);
}

.project-grid--full {
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
}

.project-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}

.project-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  transition: border-color var(--transition-base);
  pointer-events: none;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.project-card:hover::after {
  border-color: var(--accent-dim);
}

.project-card-link {
  color: inherit;
  text-decoration: none;
  display: block;
}

.project-card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-surface);
}

.project-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-card-image img {
  transform: scale(1.05);
}

.project-card-content {
  padding: var(--space-xl);
}

.project-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.project-card-description {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.project-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.project-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  background: var(--bg-surface);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
}

.project-card-cta {
  font-size: 0.875rem;
  color: var(--accent);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.project-card:hover .project-card-cta {
  color: var(--text-primary);
}

/* ==========================================================================
   ABOUT PAGE
   ========================================================================== */
.about-hero {
  padding: calc(var(--nav-height) + var(--space-4xl)) 0 var(--space-3xl);
  border-bottom: 1px solid var(--border-subtle);
}

.about-hero-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.about-hero-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3 / 4;
}

.about-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  filter: grayscale(20%);
}

.about-hero-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  pointer-events: none;
}

.about-hero-content .page-title {
  margin-bottom: var(--space-xl);
}

.about-narrative {
  font-family: var(--font-prose);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.about-narrative p {
  margin-bottom: var(--space-lg);
}

.about-narrative strong {
  color: var(--text-primary);
}

/* About Teaser (Homepage) */
.about-teaser {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.about-teaser-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1;
}

.about-teaser-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  filter: grayscale(30%);
}

.about-teaser-content p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  font-family: var(--font-prose);
}

.about-teaser-content strong {
  color: var(--accent);
}

/* ---------- Timeline ---------- */
.section-timeline {
  background: var(--bg-elevated);
}

.timeline {
  position: relative;
  padding-left: var(--space-2xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), var(--border-default));
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-2xl);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: calc(-1 * var(--space-2xl) + 2px);
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow-strong);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-xs);
  display: block;
}

.timeline-company {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: var(--space-xs);
}

.timeline-company a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.timeline-company a:hover {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.timeline-role {
  font-size: 0.9375rem;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.timeline-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 600px;
}

/* ---------- Interests Grid ---------- */
.section-interests .section-title {
  margin-bottom: var(--space-2xl);
}

.interests-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.interest-item {
  padding: var(--space-xl);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.interest-item--link {
  display: block;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}

.interest-item:hover {
  border-color: var(--border-default);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.interest-icon {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

.interest-item h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.interest-item p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.interest-cta {
  display: block;
  margin-top: var(--space-md);
  font-size: 0.8125rem;
  color: var(--accent);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.interest-item:hover .interest-cta {
  color: var(--text-primary);
}

/* ==========================================================================
   CONTACT PAGE
   ========================================================================== */
.contact-page {
  padding: calc(var(--nav-height) + var(--space-4xl)) 0 var(--space-4xl);
  min-height: 80vh;
}

.contact-page .page-title {
  margin-bottom: var(--space-sm);
}

.contact-page .page-subtitle {
  margin-bottom: var(--space-3xl);
}

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

.contact-card {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  padding: var(--space-xl) var(--space-2xl);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  color: var(--text-primary);
}

.contact-card:hover {
  border-color: var(--accent-dim);
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateX(4px);
  color: var(--text-primary);
}

.contact-card-icon {
  color: var(--accent);
  flex-shrink: 0;
}

.contact-card-info h3 {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact-card-info p {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-3xl) 0 var(--space-xl);
  background: var(--bg-elevated);
}

.footer-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--text-primary);
}

.footer-logo:hover {
  color: var(--accent);
}

.footer-tagline {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

.footer-nav {
  list-style: none;
  display: flex;
  gap: var(--space-lg);
}

.footer-nav a {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-right {
  text-align: right;
}

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

.footer-social-link {
  color: var(--text-muted);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
}

.footer-social-link:hover {
  color: var(--accent);
}

.footer-bottom {
  max-width: var(--container-max);
  margin: var(--space-2xl) auto 0;
  padding: var(--space-lg) var(--space-xl) 0;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   PAGINATION
   ========================================================================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-3xl);
  list-style: none;
}

.page-item .page-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.page-item .page-link:hover {
  border-color: var(--accent-dim);
  color: var(--text-primary);
}

.page-item.active .page-link {
  background: var(--accent);
  color: var(--text-inverse);
  border-color: var(--accent);
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */
@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Scroll-triggered fade in */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .about-hero-layout {
    grid-template-columns: 240px 1fr;
    gap: var(--space-2xl);
  }

  .footer-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-xl);
  }

  .footer-nav {
    justify-content: center;
  }

  .footer-social {
    justify-content: center;
  }

  .footer-right {
    text-align: center;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
    --space-4xl: 4rem;
  }

  /* Mobile Nav */
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-slow);
  }

  .nav-links.nav-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    font-size: 1.25rem;
  }

  /* Mobile Nav Toggle Animation */
  .nav-toggle.active .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  /* Hero */
  .hero-name {
    font-size: clamp(2.5rem, 10vw, 4rem);
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  /* About Hero */
  .about-hero-layout {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about-hero-image {
    max-width: 250px;
    margin: 0 auto;
  }

  /* About Teaser */
  .about-teaser {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about-teaser-image {
    max-width: 150px;
    margin: 0 auto;
  }

  /* Post Grid */
  .post-grid {
    grid-template-columns: 1fr;
  }

  /* Project Grid */
  .project-grid,
  .project-grid--full {
    grid-template-columns: 1fr;
  }

  /* Post Nav */
  .post-nav {
    grid-template-columns: 1fr;
  }

  .post-nav-next {
    grid-column: 1;
    text-align: left;
  }

  /* Interests */
  .interests-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .section-container {
    padding: 0 var(--space-md);
  }

  .page-title {
    font-size: 2rem;
  }

  .post-title {
    font-size: 1.75rem;
  }

  .category-filters {
    gap: var(--space-xs);
  }

  .filter-chip {
    font-size: 0.75rem;
    padding: 0.3rem 0.75rem;
  }
}

/* ==========================================================================
   READING PROGRESS BAR
   ========================================================================== */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 1001;
  background: transparent;
}

.reading-progress-bar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), #e0b54d);
  transition: width 50ms linear;
  box-shadow: 0 0 8px var(--accent-glow);
}

/* ==========================================================================
   SUBSCRIBE BUTTON & MODAL
   ========================================================================== */
.subscribe-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent-dim);
  border-radius: 100px;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  letter-spacing: 0.02em;
  flex: 0 0 auto;
}

.subscribe-btn:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--text-primary);
}

.subscribe-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.subscribe-modal--open {
  opacity: 1;
  visibility: visible;
}

.subscribe-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.subscribe-modal-content {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  max-width: 420px;
  width: 90%;
  text-align: center;
  transform: scale(0.95);
  transition: transform var(--transition-base);
}

.subscribe-modal--open .subscribe-modal-content {
  transform: scale(1);
}

.subscribe-modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color var(--transition-fast);
  line-height: 1;
}

.subscribe-modal-close:hover {
  color: var(--text-primary);
}

.subscribe-modal-content h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.subscribe-modal-content > p {
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  font-size: 0.9375rem;
}

.subscribe-form {
  display: flex;
  gap: var(--space-sm);
}

.subscribe-form input {
  flex: 1;
  padding: 0.65rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.subscribe-form input:focus {
  border-color: var(--accent);
}

.subscribe-form input::placeholder {
  color: var(--text-muted);
}

.subscribe-form .btn {
  flex-shrink: 0;
  padding: 0.65rem 1.25rem;
}

.subscribe-status {
  margin-top: var(--space-md);
  font-size: 0.8125rem;
  min-height: 1.25rem;
}

/* ==========================================================================
   COMMENTS SECTION
   ========================================================================== */
.post-comments {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--border-subtle);
  margin-top: var(--space-xl);
}

.comments-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-xl);
}

/* ==========================================================================
   INTEREST DETAIL PAGES
   ========================================================================== */
.page-single {
  padding-top: var(--nav-height);
}

.page-single .page-header {
  padding: var(--space-4xl) 0 var(--space-2xl);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-2xl);
}

.page-single .post-body h2 {
  font-size: 1.5rem;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-lg);
  color: var(--accent);
}

.page-single .post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  font-family: var(--font-body);
  font-size: 0.9375rem;
}

.page-single .post-body th,
.page-single .post-body td {
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border-subtle);
}

.page-single .post-body th {
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.page-single .post-body td {
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .subscribe-btn {
    display: none;
  }

  .subscribe-form {
    flex-direction: column;
  }

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

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

/* ==========================================================================
   SUBSCRIBE ICON
   ========================================================================== */
.subscribe-btn svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* ==========================================================================
   COMMENT FORM & COMMENTS
   ========================================================================== */
.comment-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.comment-form input,
.comment-form textarea {
  padding: 0.75rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  outline: none;
  transition: border-color var(--transition-fast);
  resize: vertical;
}

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

.comment-form input::placeholder,
.comment-form textarea::placeholder {
  color: var(--text-muted);
}

.comment-form .btn {
  align-self: flex-start;
}

.comment-status {
  margin-top: var(--space-sm);
  font-size: 0.8125rem;
  min-height: 1.25rem;
}

.comment {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.comment:first-child {
  padding-top: 0;
}

.comment-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.comment-author {
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.comment-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.comment-body {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.no-comments {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.9375rem;
}

/* ==========================================================================
   COLLAPSIBLE PROJECT CARDS (accordion)
   ========================================================================== */
.project-card-content {
  padding: var(--space-xl);
}

.project-accordion-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  color: var(--text-primary);
  text-align: left;
}

.project-accordion-toggle h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  pointer-events: none;
}

.project-accordion-arrow {
  font-size: 1rem;
  color: var(--text-muted);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.project-card.is-open .project-accordion-arrow {
  transform: rotate(180deg);
}

.project-accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.project-card.is-open .project-accordion-body {
  max-height: 800px;
}

.project-accordion-inner {
  padding-top: var(--space-lg);
}

.project-accordion-inner p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.project-accordion-inner ul {
  padding-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

.project-accordion-inner li {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-xs);
}

.project-accordion-inner strong {
  color: var(--text-primary);
}

.project-card-cta-row {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  margin-top: var(--space-md);
}

/* ==========================================================================
   MEDIA EMBEDS (video, audio, YouTube, generic iframes)
   ========================================================================== */
.media-embed {
  margin: var(--space-2xl) 0;
}

.media-embed figcaption {
  margin-top: var(--space-sm);
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-style: italic;
  text-align: center;
}

/* Responsive 16:9 container for iframes */
.embed-responsive {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
}

.embed-responsive iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Local video */
.media-video video {
  width: 100%;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
}

/* Local audio */
.media-audio audio {
  width: 100%;
  border-radius: var(--radius-md);
}

/* Hugo built-in youtube shortcode (wraps in a div) */
.post-body .youtube,
.post-body .vimeo {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  height: 0;
  margin: var(--space-2xl) 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.post-body .youtube iframe,
.post-body .vimeo iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Subscribe spinner */
.subscribe-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: 4px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}