/* ============================================
   /sre Theme - SlashSRE
   DevOps & SRE Culture Blog
   ============================================ */

/* --- CSS Variables --- */
:root {
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Space Grotesk', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --header-height: 3.5rem;

  /* Light theme */
  --bg-primary: #f6fbf8;
  --bg-secondary: #ffffff;
  --bg-card: rgba(5, 150, 105, 0.04);
  --text-primary: #111e18;
  --text-secondary: #4a5c53;
  --text-muted: rgba(26, 46, 36, 0.45);
  --border-color: rgba(5, 150, 105, 0.14);
  --accent-1: #059669;
  --accent-2: #10b981;
  --accent-gradient: linear-gradient(135deg, #059669, #10b981);
  --shadow-soft: 0 4px 16px rgba(5, 150, 105, 0.15);
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
  --code-bg: #f0f7f3;
}

[data-theme="dark"] {
  --bg-primary: #0a0f0d;
  --bg-secondary: #111a15;
  --bg-card: rgba(17, 26, 21, 0.7);
  --text-primary: #e6f4ed;
  --text-secondary: #97b5a6;
  --text-muted: rgba(230, 244, 237, 0.4);
  --border-color: rgba(16, 185, 129, 0.22);
  --accent-1: #10b981;
  --accent-2: #34d399;
  --accent-gradient: linear-gradient(135deg, #10b981, #34d399);
  --shadow-soft: 0 4px 16px rgba(16, 185, 129, 0.2);
  --shadow-card: 0 2px 14px rgba(0, 0, 0, 0.45);
  --code-bg: #0d1612;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent-1);
  text-decoration: none;
  transition: color 0.25s ease;
}
a:hover {
  color: var(--accent-2);
}

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

::selection {
  background: var(--accent-1);
  color: #fff;
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 100;
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background 0.3s ease;
}

[data-theme="dark"] .header {
  background: rgba(10, 15, 13, 0.85);
}

.header-wrapper {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-title a {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.header-title a:hover {
  color: var(--accent-1);
}

.menu-inner {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.menu-item {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: none;
  background: none;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.25s ease;
  font-family: var(--font-body);
}

.menu-item:hover {
  color: var(--accent-1);
  background: rgba(5, 150, 105, 0.08);
}

[data-theme="dark"] .menu-item:hover {
  background: rgba(16, 185, 129, 0.12);
}

.menu-item.delimiter {
  width: 1px;
  height: 20px;
  background: var(--border-color);
  padding: 0;
  cursor: default;
}

.theme-switch {
  font-size: 1rem;
}

/* Mobile hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  border: none;
  background: none;
  cursor: pointer;
  padding: 4px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s ease;
  border-radius: 2px;
}

@media (max-width: 768px) {
  .menu {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem;
    flex-direction: column;
    z-index: 99;
  }
  .menu.open {
    display: flex;
  }
  .menu-inner {
    flex-direction: column;
    gap: 0;
  }
  .menu-item {
    width: 100%;
    text-align: left;
    padding: 0.75rem 1rem;
  }
  .menu-item.delimiter {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
}

/* --- Main --- */
.main {
  flex: 1 0 auto;
  padding-top: var(--header-height);
}

/* ============================================
   HOME LANDING
   ============================================ */
.home-landing {
  position: relative;
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  height: calc(100vh - var(--header-height));
  overflow: hidden;
  padding: 0 2rem;
}

/* Profile */
.landing-profile {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transform: translateX(0);
  transition: transform 1.1s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.profile-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.25rem;
  padding: 0 1.5rem;
  transition: transform 1.1s cubic-bezier(0.22, 1, 0.36, 1);
}

.landing-avatar .avatar-img {
  width: 170px;
  height: 170px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 4px rgba(128, 128, 128, 0.08), 0 8px 30px rgba(0, 0, 0, 0.08);
  transition: width 1.1s cubic-bezier(0.22, 1, 0.36, 1),
              height 1.1s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.3s ease,
              transform 0.3s ease;
}

.landing-avatar .avatar-img:hover {
  transform: translateY(-6px);
  box-shadow: 0 0 0 4px rgba(128, 128, 128, 0.08), 0 16px 40px rgba(0, 0, 0, 0.14);
}

.landing-name {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0;
  transition: font-size 1.1s cubic-bezier(0.22, 1, 0.36, 1);
}

.landing-subtitle {
  font-size: 1.1rem;
  opacity: 0.65;
  height: 1.6em;
  transition: font-size 1.1s cubic-bezier(0.22, 1, 0.36, 1);
}

.subtitle-cursor {
  animation: blink 1s step-end infinite;
  opacity: 0.7;
}

@keyframes blink {
  50% { opacity: 0; }
}

.landing-social {
  font-size: 1.5rem;
  padding: 0.75rem 0;
  display: flex;
  gap: 0.75rem;
}

.landing-social a {
  color: var(--text-secondary);
  transition: color 0.3s ease, transform 0.3s ease;
}

.landing-social a:hover {
  color: var(--accent-1);
  transform: translateY(-3px);
}

/* Navigation buttons */
.landing-nav {
  display: flex;
  gap: 0.85rem;
  margin-top: 1.2rem;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.65rem 1.6rem;
  border: 2px solid rgba(128, 128, 128, 0.25);
  border-radius: 999px;
  background: none;
  color: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.02em;
  font-family: var(--font-body);
  transition: all 0.3s ease;
}

.nav-btn-icon {
  width: 17px;
  height: 17px;
}

.nav-btn:not(.active):hover {
  border-color: var(--accent-1);
  color: var(--accent-1);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(5, 150, 105, 0.2);
}

[data-theme="dark"] .nav-btn {
  border-color: rgba(16, 185, 129, 0.25);
}

[data-theme="dark"] .nav-btn:not(.active):hover {
  border-color: var(--accent-1);
  color: var(--accent-1);
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.22);
}

.nav-btn.active {
  border-color: var(--accent-1);
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 18px rgba(5, 150, 105, 0.35);
  transform: translateY(-1px);
}

[data-theme="dark"] .nav-btn.active {
  box-shadow: 0 4px 18px rgba(16, 185, 129, 0.35);
}

/* Divider */
.landing-divider {
  position: absolute;
  top: 12%;
  bottom: 12%;
  left: 40%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(128, 128, 128, 0.15) 20%, rgba(128, 128, 128, 0.15) 80%, transparent);
  opacity: 0;
  transition: opacity 0.8s ease 0.4s;
  z-index: 3;
  pointer-events: none;
}

/* Content panels */
.landing-content {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 58%;
  padding: 2rem 2rem 2rem 2.5rem;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 1.1s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.6s ease 0.2s;
  z-index: 2;
  will-change: transform;
}

.content-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 10;
  width: 34px;
  height: 34px;
  border: none;
  background: rgba(128, 128, 128, 0.08);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: inherit;
  opacity: 0.45;
  transition: opacity 0.25s, background 0.25s, transform 0.3s;
}

.content-close:hover {
  opacity: 1;
  background: rgba(128, 128, 128, 0.16);
  transform: rotate(90deg);
}

.content-close svg {
  width: 16px;
  height: 16px;
}

.landing-content-inner {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  padding-top: 1rem;
  height: 100%;
}

.content-section {
  display: none;
}

.content-section.active {
  display: block;
  animation: slideUp 0.5s ease 0.45s both;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Open state */
.home-landing.is-open .landing-profile {
  transform: translateX(-30%);
}

.home-landing.is-open .profile-inner {
  transform: scale(0.88);
}

.home-landing.is-open .landing-avatar .avatar-img {
  width: 130px;
  height: 130px;
}

.home-landing.is-open .landing-name {
  font-size: 1.65rem;
}

.home-landing.is-open .landing-subtitle {
  font-size: 0.95rem;
}

.home-landing.is-open .landing-divider {
  opacity: 1;
}

.home-landing.is-open .landing-content {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}

.home-landing.is-open .recent-posts {
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
}

body.panel-open footer {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

/* ============================================
   SKILLS SECTION
   ============================================ */
.skills-section {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1rem;
}

.skills-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 2rem;
  letter-spacing: 0.05em;
  color: transparent;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
}

.skills-category {
  margin-bottom: 1.5rem;
}

.category-label {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  text-align: center;
  margin-bottom: 0.75rem;
  opacity: 0.45;
}

.badges-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.skill-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  cursor: default;
  transition: transform 0.3s ease;
}

.skill-badge:hover {
  transform: translateY(-4px);
}

.badge-hex {
  --hex-size: 58px;
  width: var(--hex-size);
  height: calc(var(--hex-size) * 1.1547);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  background: var(--badge-color);
  transition: filter 0.3s ease;
}

.badge-hex::before {
  content: '';
  position: absolute;
  inset: 2px;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  background: var(--badge-bg, color-mix(in srgb, var(--badge-color) 12%, white));
}

[data-theme="dark"] .badge-hex::before {
  background: var(--badge-bg, color-mix(in srgb, var(--badge-color) 18%, #1e1e2e));
}

.skill-badge:hover .badge-hex {
  filter: drop-shadow(0 0 6px var(--badge-color));
}

.badge-hex img {
  width: 28px;
  height: 28px;
  position: relative;
  z-index: 1;
}

.badge-name {
  font-size: 0.6rem;
  font-weight: 500;
  opacity: 0.55;
  text-align: center;
  max-width: 72px;
  line-height: 1.15;
  transition: opacity 0.3s ease;
}

.skill-badge:hover .badge-name {
  opacity: 1;
  color: var(--badge-color);
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-section {
  width: 100%;
  padding: 0 1rem;
}

.about-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  color: transparent;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
}

.about-content p {
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 1rem;
  opacity: 0.85;
}

.about-content strong {
  opacity: 1;
  color: var(--accent-1);
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(128, 128, 128, 0.15);
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.highlight-icon {
  flex-shrink: 0;
  margin-top: 0.2rem;
  opacity: 0.7;
  color: var(--accent-1);
}

.highlight-icon svg {
  display: block;
}

.highlight-item strong {
  font-size: 0.9rem;
  display: block;
  margin-bottom: 0.15rem;
}

.highlight-item p {
  font-size: 0.8rem !important;
  margin: 0 !important;
  opacity: 0.7 !important;
}

.about-cta {
  margin-top: 2rem;
  text-align: center;
}

.about-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 2rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #fff;
  background: var(--accent-gradient);
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: var(--shadow-soft);
}

.about-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(5, 150, 105, 0.35);
  color: #fff;
}

[data-theme="dark"] .about-cta-btn:hover {
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

/* ============================================
   RECENT POSTS (Home)
   ============================================ */
.recent-posts {
  position: absolute;
  bottom: 1.5rem;
  left: 2rem;
  right: 2rem;
  z-index: 1;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.recent-posts-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  text-align: center;
  margin-bottom: 1rem;
  opacity: 0.4;
}

.recent-posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.recent-post-card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.recent-post-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-1);
  color: inherit;
}

[data-theme="dark"] .recent-post-card:hover {
  background: rgba(17, 26, 21, 0.85);
}

.recent-post-card h3 {
  font-family: var(--font-heading);
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.4;
  margin: 0;
}

.recent-post-card time {
  font-size: 0.68rem;
  opacity: 0.4;
}

/* ============================================
   BLOG LIST PAGE
   ============================================ */
.list-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
}

.list-header {
  text-align: center;
  margin-bottom: 3rem;
}

.list-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: transparent;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.list-tag-icon {
  margin-right: 0.3rem;
}

.list-subtitle {
  font-size: 1rem;
  opacity: 0.6;
}

.posts-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.post-card {
  border-radius: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.post-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-1);
  box-shadow: var(--shadow-soft);
}

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

.post-card-image {
  width: 240px;
  min-height: 180px;
  flex-shrink: 0;
  overflow: hidden;
}

.post-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.post-card-content {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.78rem;
  opacity: 0.5;
}

.post-card-meta i {
  margin-right: 0.25rem;
}

.post-card-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.4;
  margin: 0;
  color: var(--text-primary);
}

.post-card-summary {
  font-size: 0.88rem;
  line-height: 1.6;
  opacity: 0.7;
  margin: 0;
}

.post-card-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: auto;
}

.post-tag {
  font-size: 0.68rem;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  background: rgba(5, 150, 105, 0.1);
  color: var(--accent-1);
  font-weight: 500;
}

[data-theme="dark"] .post-tag {
  background: rgba(16, 185, 129, 0.15);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 3rem;
  list-style: none;
  padding: 0;
}

.pagination .page-item .page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all 0.25s ease;
}

.pagination .page-item .page-link:hover {
  border-color: var(--accent-1);
  color: var(--accent-1);
}

.pagination .page-item.active .page-link {
  background: var(--accent-gradient);
  color: #fff;
  border-color: transparent;
}

/* ============================================
   SINGLE POST PAGE
   ============================================ */
.single-post {
  max-width: 780px;
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
}

.post-header {
  margin-bottom: 2.5rem;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.85rem;
  opacity: 0.55;
  margin-bottom: 1rem;
}

.post-meta i {
  margin-right: 0.3rem;
}

.post-title {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.post-description {
  font-size: 1.1rem;
  opacity: 0.7;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.post-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag-link {
  font-size: 0.78rem;
  padding: 0.3rem 0.85rem;
  border-radius: 20px;
  background: rgba(5, 150, 105, 0.1);
  color: var(--accent-1);
  font-weight: 500;
  transition: all 0.25s ease;
}

.tag-link:hover {
  background: var(--accent-1);
  color: #fff;
}

[data-theme="dark"] .tag-link {
  background: rgba(16, 185, 129, 0.15);
}

.post-cover {
  margin-bottom: 2.5rem;
  border-radius: 16px;
  overflow: hidden;
}

.post-cover img {
  width: 100%;
  display: block;
}

/* Table of Contents */
.table-of-contents {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 2.5rem;
}

.toc-title {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  opacity: 0.7;
}

.toc-title i {
  margin-right: 0.4rem;
}

.table-of-contents nav ul {
  list-style: none;
  padding-left: 1rem;
}

.table-of-contents nav > ul {
  padding-left: 0;
}

.table-of-contents nav li {
  margin: 0.3rem 0;
}

.table-of-contents nav a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  opacity: 0.8;
}

.table-of-contents nav a:hover {
  color: var(--accent-1);
  opacity: 1;
}

/* Post Content */
.post-content {
  font-size: 1rem;
  line-height: 1.8;
}

.post-content h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.post-content h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  margin: 2rem 0 0.75rem;
}

.post-content h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
}

.post-content p {
  margin-bottom: 1.25rem;
}

.post-content ul, .post-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.post-content li {
  margin: 0.4rem 0;
}

.post-content blockquote {
  border-left: 4px solid var(--accent-1);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background: var(--bg-card);
  border-radius: 0 8px 8px 0;
  font-style: italic;
  opacity: 0.9;
}

.post-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.15em 0.4em;
  border-radius: 4px;
  background: var(--code-bg);
}

.post-content pre {
  margin: 1.5rem 0;
  border-radius: 12px;
  overflow-x: auto;
  border: 1px solid var(--border-color);
}

.post-content pre code {
  display: block;
  padding: 1.25rem 1.5rem;
  background: var(--code-bg);
  font-size: 0.85rem;
  line-height: 1.7;
}

.post-content img {
  border-radius: 12px;
  margin: 1.5rem 0;
}

.post-content a {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.post-content a:hover {
  text-decoration-color: var(--accent-2);
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

.post-content th, .post-content td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  text-align: left;
}

.post-content th {
  background: var(--bg-card);
  font-weight: 600;
}

/* 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-color);
}

.post-nav-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1rem 1.25rem;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: inherit;
  transition: all 0.3s ease;
}

.post-nav-item:hover {
  border-color: var(--accent-1);
  transform: translateY(-2px);
  color: inherit;
}

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

.post-nav-label {
  font-size: 0.75rem;
  opacity: 0.5;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.post-nav-title {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 2rem 0;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

.footer-container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 2rem;
}

.footer-line {
  margin: 0.25rem 0;
}

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

.footer a:hover {
  color: var(--accent-1);
}

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 50;
  box-shadow: var(--shadow-soft);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-3px);
  color: #fff;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 960px) {
  .home-landing {
    height: auto;
    min-height: calc(100vh - var(--header-height));
    overflow: visible;
    padding: 0 1rem;
  }

  .landing-profile {
    position: relative;
    padding: 3rem 0 1rem;
  }

  .home-landing.is-open .landing-profile {
    transform: translateX(0);
  }

  .home-landing.is-open .profile-inner {
    transform: scale(0.85);
  }

  .home-landing.is-open .landing-avatar .avatar-img {
    width: 100px;
    height: 100px;
  }

  .home-landing.is-open .landing-name {
    font-size: 1.35rem;
  }

  .landing-divider {
    display: none;
  }

  .landing-content {
    position: relative;
    width: 100%;
    transform: translateX(0);
    opacity: 0;
    max-height: 0;
    padding: 0 0.5rem;
    overflow: hidden;
    transition: opacity 0.5s ease, max-height 0.7s cubic-bezier(0.22, 1, 0.36, 1), padding 0.5s ease;
  }

  .home-landing.is-open .landing-content {
    opacity: 1;
    max-height: 2000px;
    padding: 1rem 0.5rem 2rem;
    pointer-events: auto;
  }

  .content-close {
    top: 0.5rem;
    right: 0.5rem;
  }

  .recent-posts {
    position: static;
    padding: 1.5rem 0 2rem;
  }

  .recent-posts-grid {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .home-landing.is-open .recent-posts {
    display: none;
  }

  .about-title {
    text-align: center;
  }

  .post-card-link {
    flex-direction: column;
  }

  .post-card-image {
    width: 100%;
    min-height: 160px;
  }
}

@media (max-width: 680px) {
  .landing-avatar .avatar-img {
    width: 135px;
    height: 135px;
  }

  .landing-name {
    font-size: 1.75rem;
  }

  .nav-btn {
    padding: 0.55rem 1.2rem;
    font-size: 0.82rem;
  }

  .home-landing.is-open .landing-avatar .avatar-img {
    width: 80px;
    height: 80px;
  }

  .home-landing.is-open .landing-name {
    font-size: 1.15rem;
  }

  .badges-grid {
    gap: 0.6rem;
  }

  .badge-hex {
    --hex-size: 48px;
  }

  .badge-hex img {
    width: 23px;
    height: 23px;
  }

  .badge-name {
    font-size: 0.55rem;
  }

  .skills-title {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
  }

  .about-section {
    padding: 0 0.5rem;
  }

  .about-title {
    font-size: 1.2rem;
  }

  .about-content p {
    font-size: 0.88rem;
  }

  .list-title {
    font-size: 1.6rem;
  }

  .post-title {
    font-size: 1.8rem;
  }

  .post-nav {
    grid-template-columns: 1fr;
  }

  .single-post {
    padding: 2rem 1rem 3rem;
  }
}

@media (max-width: 380px) {
  .badges-grid {
    gap: 0.4rem;
  }

  .badge-hex {
    --hex-size: 42px;
  }

  .badge-hex img {
    width: 20px;
    height: 20px;
  }
}

/* Terms / Tags Cloud */
.terms-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.term-card {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  text-decoration: none;
  color: var(--text-color);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.25s ease;
}

.term-card:hover {
  border-color: var(--accent-1);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  color: var(--accent-1);
}

.term-card .term-name {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.term-card .term-name i {
  color: var(--accent-1);
  font-size: 0.85rem;
}

.term-card .term-count {
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.15rem 0.55rem;
  border-radius: 12px;
}

/* 404 Error Page */
.error-page {
  text-align: center;
  padding: 5rem 1.5rem 6rem;
  max-width: 600px;
  margin: 0 auto;
}

.error-badge {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border-radius: 20px;
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.error-code {
  font-size: 6rem;
  font-weight: 900;
  line-height: 1;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 1rem;
}

.error-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.error-description {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.error-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.error-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  border-radius: 10px;
  background: var(--accent-gradient);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.error-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
  color: #fff;
}

.error-btn-secondary {
  background: var(--bg-card);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.error-btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-1);
  box-shadow: none;
  color: var(--accent-1);
}