/* ============================================================
   style.css — mjkranch.com custom theme
   ============================================================ */

/* 1. Custom Properties
   ============================================================ */
:root {
  --bg: #030712;
  --bg-card: #0f172a;
  --bg-hover: #1e293b;
  --bg-nav: rgba(3, 7, 18, 0.92);
  --text: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #475569;
  --accent: #22d3ee;
  --accent-hover: #06b6d4;
  --accent-glow: rgba(34, 211, 238, 0.12);
  --border: #1e293b;
  --border-accent: rgba(34, 211, 238, 0.28);
  --code-bg: #020617;
  --hero-overlay: rgba(3, 7, 18, 0.68);
  --nav-h: 64px;
  --max-w: 860px;
  --r: 10px;
  --r-sm: 6px;
}

[data-theme="light"] {
  --bg: #f0f4f8;
  --bg-card: #ffffff;
  --bg-hover: #f1f5f9;
  --bg-nav: rgba(15, 23, 42, 0.95);
  --text: #0f172a;
  --text-secondary: #334155;
  --text-muted: #94a3b8;
  --accent: #0284c7;
  --accent-hover: #0369a1;
  --accent-glow: rgba(2, 132, 199, 0.08);
  --border: #e2e8f0;
  --border-accent: rgba(2, 132, 199, 0.3);
  --code-bg: #1e293b;
  --hero-overlay: rgba(10, 15, 30, 0.65);
}

/* 2. Reset & Base
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 1rem);
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.25s, color 0.25s;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s;
}

a:hover { text-decoration: underline; }

/* 3. Typography
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

h1 { font-size: 2.25rem; letter-spacing: -0.025em; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }
h5, h6 { font-size: 1rem; }

p { margin-bottom: 1.25rem; }

ul, ol {
  padding-left: 1.75rem;
  margin-bottom: 1.25rem;
}

li { margin-bottom: 0.25rem; }

ul ul, ol ol, ul ol, ol ul {
  margin-top: 0.25rem;
  margin-bottom: 0;
}

blockquote {
  border-left: 3px solid var(--accent);
  margin: 1.5rem 0;
  padding: 0.75rem 1.25rem;
  background: var(--bg-card);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--text-secondary);
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.85em;
  background: var(--bg-card);
  color: var(--accent);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  border: 1px solid var(--border);
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  line-height: 1.6;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text);
  font-size: 0.9rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
}

th {
  background: var(--bg-card);
  color: var(--accent);
  font-weight: 600;
  padding: 0.625rem 1rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

td {
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

tr:last-child td { border-bottom: none; }

sup {
  font-size: 0.7em;
  line-height: 0;
  vertical-align: super;
}

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

.footnotes {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* 4. Layout
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-wide {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* 5. Navbar
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--bg-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: box-shadow 0.3s;
}

.navbar.scrolled {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  font-size: 1.125rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.nav-brand:hover { color: var(--accent); text-decoration: none; }

.nav-logo {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
}

.nav-brand-text { white-space: nowrap; }
.nav-brand-accent { color: var(--accent); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-list {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.75rem;
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--r-sm);
  transition: color 0.15s, background 0.15s;
  white-space: nowrap;
}

.nav-link:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
  text-decoration: none;
}

.nav-link.active { color: var(--accent); }

.dropdown-arrow {
  transition: transform 0.2s;
  opacity: 0.6;
  flex-shrink: 0;
}

.nav-item:hover .dropdown-arrow,
.nav-item.mobile-open .dropdown-arrow {
  transform: rotate(180deg);
  opacity: 1;
}

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 0.375rem;
  min-width: 180px;
  list-style: none;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s, transform 0.18s, visibility 0.18s;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
}

.nav-item:hover .nav-dropdown,
.nav-item:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown li { margin: 0; }

.dropdown-link {
  display: block;
  padding: 0.4375rem 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  border-radius: var(--r-sm);
  white-space: nowrap;
  transition: color 0.12s, background 0.12s;
}

.dropdown-link:hover {
  color: var(--text);
  background: var(--bg-hover);
  text-decoration: none;
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--r-sm);
  padding: 0.375rem;
  cursor: pointer;
  color: rgba(255, 255, 255, 0.6);
  margin-left: 0.5rem;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--border-accent);
  background: var(--accent-glow);
}

/* Theme toggle icons: show one based on active preference */
.icon-sun, .icon-moon, .icon-auto { display: none; }
[data-theme-pref="light"]  .icon-sun  { display: block; }
[data-theme-pref="dark"]   .icon-moon { display: block; }
[data-theme-pref="auto"]   .icon-auto { display: block; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 6. Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh; /* iOS Safari: use small viewport height to avoid address-bar jump */
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--hero-overlay);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: calc(var(--nav-h) + 2rem) 1.5rem 4rem;
  max-width: 680px;
}

.hero-avatar {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow), 0 8px 32px rgba(0,0,0,0.4);
  margin: 0 auto 1.5rem;
  display: block;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 0.5rem;
}

.hero-accent { color: var(--accent); }

.hero-subtitle {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.72);
  margin: 0 0 2rem;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  gap: 0.875rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Page hero (section pages) */
.page-hero {
  position: relative;
  min-height: 300px;
  display: flex;
  align-items: flex-end;
  padding-bottom: 2rem;
  background-size: cover;
  background-position: center;
  margin-top: var(--nav-h);
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(3, 7, 18, 0.92) 0%,
    rgba(3, 7, 18, 0.5) 50%,
    rgba(3, 7, 18, 0.2) 100%
  );
}

.page-hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.025em;
  margin: 0 0 0.375rem;
}

.page-hero-subtitle {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.75);
}

/* Plain page header */
.page-header {
  margin-top: var(--nav-h);
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--border);
}

.page-header-title {
  font-size: 2rem;
  font-weight: 700;
  margin: 0;
}

.page-header-subtitle {
  color: var(--text-secondary);
  margin-top: 0.375rem;
  margin-bottom: 0;
}

/* 7. Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--r-sm);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s;
  cursor: pointer;
  border: 1px solid transparent;
  line-height: 1;
}

.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--accent);
  color: #030712;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #030712;
  box-shadow: 0 4px 14px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: rgba(255, 255, 255, 0.85);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.4);
  color: #ffffff;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--border-accent);
}

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

/* 8. Content Area
   ============================================================ */
.content-wrap {
  padding: 2.5rem 0 4rem;
}

.content-body h2 {
  margin-top: 3rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.content-body h3 { margin-top: 2rem; }

.content-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: var(--border-accent);
}

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

.content-body img {
  border-radius: var(--r-sm);
  margin: 1rem 0;
}

/* Well / callout boxes */
.well,
.intro-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-sm);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.well a,
.intro-box a { color: var(--accent); }

.intro-box { margin-bottom: 2.5rem; font-size: 1.0625rem; }

/* 9. Post cards
   ============================================================ */
.posts-header {
  margin-top: var(--nav-h);
  padding: 3rem 0 1.5rem;
}

.posts-header-title {
  font-size: 2rem;
  font-weight: 700;
  margin: 0;
}

.posts-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  padding-bottom: 3rem;
}

.post-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1.5rem;
  text-decoration: none;
  transition: border-color 0.18s, transform 0.18s, box-shadow 0.18s;
}

.post-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  text-decoration: none;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.post-meta-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.post-category {
  font-size: 0.75rem;
  padding: 0.125rem 0.5rem;
  border-radius: 4px;
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid var(--border-accent);
  font-weight: 500;
}

.post-card-title {
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.5rem;
  line-height: 1.35;
}

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

.post-card-excerpt {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
}

/* 10. Blog Post Header
   ============================================================ */
.post-header {
  margin-top: var(--nav-h);
  padding: 3rem 0 2rem;
}

.post-header-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  margin-bottom: 0.875rem;
}

.post-header-title {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin: 0 0 0.5rem;
}

.post-header-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin: 0 0 1rem;
  font-weight: 400;
}

.post-header-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.5rem 0;
}

/* Post footer */
.post-tags {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.post-tags-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
}

.tag-link {
  display: inline-block;
  font-size: 0.8125rem;
  padding: 0.25rem 0.625rem;
  border-radius: 4px;
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: all 0.15s;
}

.tag-link:hover {
  color: var(--accent);
  border-color: var(--border-accent);
  text-decoration: none;
}

/* Post navigation */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.post-nav-link {
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  text-decoration: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.post-nav-link:hover {
  border-color: var(--border-accent);
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.post-nav-link.next { text-align: right; }

.post-nav-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.25rem;
}

.post-nav-title {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
}

/* Comments */
.comments-wrap {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

/* 11. Tabs (publications)
   ============================================================ */
.code-tabs {
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  margin: 1.5rem 0;
}

.nav-tabs {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-tabs::-webkit-scrollbar { display: none; }

.nav-tabs li { flex-shrink: 0; margin: 0; }

.nav-tabs .tab-btn {
  display: block;
  padding: 0.625rem 1.125rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s;
  font-family: inherit;
}

.nav-tabs .tab-btn:hover { color: var(--text-secondary); }

.nav-tabs .tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-content { background: var(--bg); }

.tab-pane {
  display: none;
  padding: 1.25rem 1.5rem;
}

.tab-pane.active { display: block; }

/* 12. Gallery (overrides for dark mode)
   ============================================================ */
.gallery {
  max-width: 100%;
  margin: 1.5rem 0;
}

.gallery figcaption {
  font-size: 0.8125rem;
}

/* 13. Pagination
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 2rem 0 1rem;
}

.pagination-link {
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.15s;
}

.pagination-link:hover {
  border-color: var(--border-accent);
  color: var(--accent);
  text-decoration: none;
}

/* 14. Home sections
   ============================================================ */
.home-section {
  padding: 4rem 0;
}

.home-section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.home-section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 0 0.375rem;
}

.home-section-sub {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin-bottom: 2rem;
}

.home-about {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 2rem 2.5rem;
}

.home-about p { color: var(--text-secondary); }
.home-about p:last-child { margin-bottom: 0; }
.home-about a { color: var(--accent); }

/* 15. Footer
   ============================================================ */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
  margin-top: 3rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

.footer-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
}

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

.footer-desc {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.footer-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-link {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.4375rem 0.875rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-decoration: none;
  transition: all 0.15s;
}

.footer-link:hover {
  color: var(--accent);
  border-color: var(--border-accent);
  background: var(--accent-glow);
  text-decoration: none;
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-copy a { color: var(--text-muted); }
.footer-copy a:hover { color: var(--accent); }

/* 16. CV
   ============================================================ */
.cv-page {
  margin-top: var(--nav-h);
  padding: 3rem 0 4rem;
}

.cv-top {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.cv-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
  flex-shrink: 0;
  display: block;
}

.cv-name {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 0.375rem;
  letter-spacing: -0.025em;
}

.cv-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.cv-contact a { color: var(--accent); text-decoration: none; }
.cv-contact a:hover { text-decoration: underline; }

.cv-download-btn { margin-top: 0.875rem; }

.cv-section-nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.cv-section-nav a {
  padding: 0.375rem 0.875rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.15s;
}

.cv-section-nav a:hover {
  color: var(--accent);
  border-color: var(--border-accent);
  text-decoration: none;
}

.cv-section { margin-bottom: 3rem; }

.cv-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin: 0 0 1.25rem;
}

.cv-article {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}

.cv-article:first-of-type { border-top: 1px solid var(--border); }

.cv-article-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.25rem;
}

.cv-article-title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
  color: var(--text);
  line-height: 1.4;
}

.cv-article-title a { color: var(--text); text-decoration: none; }
.cv-article-title a:hover { color: var(--accent); }

.cv-article-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.cv-article-subtitle {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 0.625rem;
}

.cv-article-subtitle a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-decoration-color: var(--border);
}

.cv-article-subtitle a:hover { color: var(--accent); }

.cv-bullets {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
}

.cv-bullet {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.375rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.cv-bullet::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
  line-height: inherit;
}

.cv-bullet a { color: var(--accent); text-decoration: none; }
.cv-bullet a:hover { text-decoration: underline; }

.cv-sub-bullets {
  list-style: none;
  padding: 0;
  margin: 0.25rem 0 0 0.25rem;
}

.cv-sub-bullet {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.2rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.cv-sub-bullet::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

.cv-sub-bullet a { color: var(--accent); text-decoration: none; }
.cv-sub-bullet a:hover { text-decoration: underline; }

.cv-award-badge {
  display: inline-block;
  font-size: 0.6875rem;
  padding: 0.1rem 0.5rem;
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid var(--border-accent);
  border-radius: 4px;
  margin-left: 0.5rem;
  font-weight: 600;
  vertical-align: middle;
}

.cv-notes {
  margin-top: 2rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* 17. 404 Page
   ============================================================ */
.error-page {
  margin-top: var(--nav-h);
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1.5rem;
}

.error-code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 7rem;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
  opacity: 0.25;
  margin-bottom: 1rem;
  display: block;
}

.error-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.error-text {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* 18. Responsive
   ============================================================ */

/* Make wide content scroll horizontally rather than overflow */
.content-body table,
.content-body pre,
.code-tabs {
  max-width: 100%;
}

.content-body table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* Minimum touch target size */
.nav-link,
.dropdown-link,
.btn,
.tag-link,
.footer-link,
.pagination-link { min-height: 44px; }

/* Ensure gallery doesn't overflow on mobile */
.gallery { overflow: hidden; }

@media (min-width: 640px) {
  .posts-list { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root {
    --nav-h: 56px;
  }

  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }

  .hero-title { font-size: 2.25rem; }
  .page-hero { min-height: 240px; }
  .page-hero-title { font-size: 1.875rem; }
  .post-header-title { font-size: 1.75rem; }

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

  .nav-menu {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(3, 7, 18, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
    gap: 0;
    transform: translateX(100%);
    transition: transform 0.25s ease;
    overflow-y: auto;
    z-index: 99;
  }

  .nav-menu.open { transform: translateX(0); }

  .nav-list {
    flex-direction: column;
    width: 100%;
  }

  .nav-item { width: 100%; }

  .nav-link {
    width: 100%;
    padding: 0.875rem 0;
    font-size: 1.0625rem;
    border-radius: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.85);
    background: none;
  }

  .nav-dropdown {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    background: transparent;
    border: none;
    padding: 0 0 0 1rem;
    display: none;
    min-width: unset;
  }

  .nav-item.mobile-open .nav-dropdown { display: block; }

  .dropdown-link {
    padding: 0.5rem 0;
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.55);
    border-radius: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .theme-toggle { margin-left: 0; margin-top: 1.5rem; }

  .posts-list { grid-template-columns: 1fr; } /* override 640px rule on very small screens */
  .post-nav { grid-template-columns: 1fr; }
  .cv-top { flex-direction: column; align-items: center; text-align: center; }
  .cv-article-top { flex-direction: column; gap: 0.25rem; }
  .cv-section-nav { gap: 0.375rem; }
  .home-about { padding: 1.5rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .footer-links { flex-direction: column; align-items: center; }

  /* Ensure content images don't overflow on mobile */
  .content-body img { max-width: 100%; height: auto; }

  /* Reduce hero avatar on very small screens */
  .hero-avatar { width: 88px; height: 88px; }

  /* Tabs: make tab buttons easier to tap */
  .nav-tabs .tab-btn { padding: 0.75rem 1rem; }
}

@media (max-width: 480px) {
  :root { --max-w: 100%; }
  .container { padding-left: 1rem; padding-right: 1rem; }
  .hero-title { font-size: 1.875rem; }
  .page-hero-title { font-size: 1.5rem; }
  .home-section { padding: 2.5rem 0; }
  .code-tabs { border-radius: var(--r-sm); }
}