/* ==========================================
   DESIGN SYSTEM - PRIMER (GITHUB TECH MINIMALIST)
   ========================================== */
:root {
  /* Dark Theme (Default - GitHub Dark) */
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  
  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  
  --accent-primary: #58a6ff; /* Primer Blue */
  --accent-primary-rgb: 88, 166, 255;
  --accent-success: #3fb950; /* Primer Green */
  --accent-success-rgb: 63, 185, 80;
  --accent-orange: #f0883e;
  
  --border-color: #30363d;
  --border-radius: 6px; /* Standard Primer Radius */
  
  --glass-bg: rgba(22, 27, 34, 0.85);
  --glass-border: #30363d;
  
  --shadow-subtle: 0 1px 0 rgba(1, 4, 9, 0.04);
  --card-shadow: 0 8px 24px rgba(1, 4, 9, 0.2);
  
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace;
  
  --transition-smooth: all 0.2s cubic-bezier(0.3, 0, 0.6, 1);
  --transition-fast: all 0.1s ease;
}

[data-theme="light"] {
  /* Light Theme - GitHub Light */
  --bg-primary: #ffffff;
  --bg-secondary: #f6f8fa;
  --bg-tertiary: #eaeef2;
  
  --text-primary: #24292f;
  --text-secondary: #57606a;
  --text-muted: #8c959f;
  
  --accent-primary: #0969da;
  --accent-primary-rgb: 9, 105, 218;
  --accent-success: #1a7f37;
  --accent-success-rgb: 26, 127, 55;
  --accent-orange: #bc4c00;
  
  --border-color: #d0d7de;
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: #d0d7de;
  
  --shadow-subtle: 0 1px 0 rgba(31, 35, 40, 0.04);
  --card-shadow: 0 8px 24px rgba(140, 149, 159, 0.12);
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.875rem; /* ~14px */
  line-height: 1.5;
  overflow-x: hidden;
  transition: background-color 0.2s ease, color 0.2s ease;
}

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

a:hover {
  text-decoration: underline;
}

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

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  background: none;
  border: none;
  outline: none;
}

ul {
  list-style: none;
}

/* ==========================================
   REUSABLE LAYOUTS & COMPONENTS
   ========================================== */
.container {
  width: 100%;
  max-width: 1012px; /* Standard Primer page layout width */
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4rem 0;
}

.section-title {
  font-size: 2rem; /* ~32px H1 */
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.section-title span {
  color: var(--accent-primary);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 2.5rem;
}

/* Primer Box (Card/Container) */
.Box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-subtle);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.Box--condensed {
  padding: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.375rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--border-radius);
  cursor: pointer;
  border: 1px solid var(--border-color);
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  transition: var(--transition-fast);
}

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

.btn-primary {
  background-color: var(--accent-success);
  border-color: rgba(240, 246, 252, 0.1);
  color: #ffffff; /* Contrast text */
}

.btn-primary:hover {
  background-color: #2ea043;
}

[data-theme="light"] .btn-primary:hover {
  background-color: #1a7f37;
}

/* Button Pill (fully rounded for CTA Load More) */
.btn-pill {
  border-radius: 9999px;
  padding: 0.5rem 1.5rem;
}

/* Labels / Badges */
.Label {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.4;
  border: 1px solid transparent;
  border-radius: 2em;
}

.Label--secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  border-color: var(--border-color);
}

.Label--accent {
  background-color: rgba(var(--accent-primary-rgb), 0.1);
  color: var(--accent-primary);
  border-color: rgba(var(--accent-primary-rgb), 0.15);
}

.Label--orange {
  background-color: rgba(255, 122, 0, 0.1);
  color: var(--accent-orange);
  border-color: rgba(255, 122, 0, 0.15);
}

/* ==========================================
   NAVBAR & HEADER
   ========================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo:hover {
  text-decoration: none;
  opacity: 0.85;
}

.logo-code {
  font-family: var(--font-mono);
  color: var(--accent-primary);
}

/* UnderlineNav (GitHub Tab navigation pattern) */
.UnderlineNav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.UnderlineNav-item {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 1rem 0;
  border-bottom: 2px solid transparent;
  font-weight: 500;
}

.UnderlineNav-item:hover {
  color: var(--text-primary);
  text-decoration: none;
  border-bottom-color: var(--text-muted);
}

.UnderlineNav-item.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-orange); /* Orange navigation highlight */
  font-weight: 600;
}

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

/* Theme Toggle */
.theme-toggle {
  background: none;
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.theme-toggle:hover {
  border-color: var(--text-muted);
  color: var(--text-primary);
}

.theme-toggle .sun-icon {
  display: none;
}

[data-theme="light"] .theme-toggle .moon-icon {
  display: none;
}

[data-theme="light"] .theme-toggle .sun-icon {
  display: block;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-smooth);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Footer */
.footer {
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem 0;
}

.footer-grid {
  display: grid;
  grid-template-cols: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.footer-brand p {
  color: var(--text-secondary);
  margin-top: 0.5rem;
  font-size: 0.8rem;
  max-width: 300px;
}

.footer-title {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-link {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.footer-link:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

.footer-socials {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.social-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.social-icon:hover {
  border-color: var(--text-muted);
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

/* ==========================================
   HOMEPAGE (index.html) STYLES
   ========================================== */

/* Hero Section */
.hero-section {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding-top: 60px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-cols: 1.3fr 0.7fr;
  align-items: center;
  gap: 3rem;
}

.hero-title {
  font-size: 2.25rem; /* ~36px */
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

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

.hero-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
  max-width: 550px;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 0.75rem;
}

/* Code Container (Gist/Terminal style) */
.hero-visual {
  position: relative;
}

.code-window {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.code-window-header {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.5rem 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-secondary);
}

.code-window-dots {
  display: flex;
  gap: 4px;
}

.code-window-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--border-color);
}

.code-window-body {
  padding: 1rem;
  color: var(--text-primary);
  line-height: 1.6;
}

/* ==========================================
   ARTICLE CARD (Primer Box style)
   ========================================== */
.posts-grid {
  display: grid;
  grid-template-cols: repeat(3, 1fr);
  gap: 1.5rem;
}

.post-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.post-card-image {
  aspect-ratio: 16/9;
  width: 100%;
  overflow: hidden;
  background-color: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
}

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

.post-card:hover .post-card-image img {
  opacity: 0.85;
}

.post-card-content {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.post-title {
  font-size: 1.125rem; /* ~18px H3 */
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card:hover .post-title {
  color: var(--accent-primary);
  text-decoration: none;
}

.post-excerpt {
  color: var(--text-secondary);
  font-size: 0.8rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-author {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
}

.post-author-avatar {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  overflow: hidden;
  background-color: var(--bg-tertiary);
}

.post-author-info {
  font-size: 0.75rem; /* ~12px */
  color: var(--text-secondary);
}

.post-author-info span.author-name {
  font-weight: 600;
  color: var(--text-primary);
}

/* ==========================================
   PORTFOLIO CARD
   ========================================== */
.portfolio-grid {
  display: grid;
  grid-template-cols: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-card-image {
  aspect-ratio: 16/9;
  width: 100%;
  overflow: hidden;
  background-color: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-card-image svg {
  width: 40px;
  height: 40px;
  color: var(--text-muted);
}

.project-card-content {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 0.75rem;
}

.project-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-orange);
  background-color: rgba(255, 122, 0, 0.08);
  border: 1px solid rgba(255, 122, 0, 0.15);
  padding: 0.125rem 0.375rem;
  border-radius: 3px;
}

.project-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.project-description {
  color: var(--text-secondary);
  font-size: 0.8rem;
  margin-bottom: 1rem;
  flex-grow: 1;
}

.project-link {
  font-weight: 500;
  font-size: 0.8rem;
  color: var(--accent-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: auto;
}

/* ==========================================
   ABOUT PAGE STYLES
   ========================================== */
.about-grid {
  display: grid;
  grid-template-cols: 0.7fr 1.3fr;
  gap: 3rem;
  align-items: flex-start;
}

.profile-card {
  text-align: center;
}

.profile-image-container {
  width: 140px;
  height: 140px;
  margin: 0 auto 1.25rem auto;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.profile-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-name {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.profile-role {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.about-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.about-content p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 0.875rem; /* ~14px support text */
  line-height: 1.6;
}

/* Fernando Pessoa Quote */
.quote-box {
  border-left: 2px solid var(--accent-orange);
  padding: 0.75rem 1rem;
  margin: 1.5rem 0;
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
  line-height: 1.6;
}

/* ==========================================
   FILTER & SEARCH CONTROLS
   ========================================== */
.filter-search-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  gap: 1.5rem;
  flex-wrap: wrap;
}

/* Primer SegmentedControl styling */
.filter-tabs {
  display: inline-flex;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2px;
}

.filter-tab {
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-secondary);
  background: none;
  border: none;
  transition: var(--transition-fast);
}

.filter-tab:hover {
  color: var(--text-primary);
}

.filter-tab.active {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  box-shadow: var(--shadow-subtle);
}

.search-box {
  position: relative;
  max-width: 240px;
  width: 100%;
}

.search-box input {
  width: 100%;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 0.375rem 0.75rem 0.375rem 2rem;
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-size: 0.8rem;
  transition: var(--transition-fast);
}

.search-box input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(var(--accent-primary-rgb), 0.3);
}

.search-box svg {
  position: absolute;
  left: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Load More Container */
.load-more-container {
  text-align: center;
  margin-top: 2.5rem;
}

.no-results {
  display: none;
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-secondary);
  grid-column: 1 / -1;
}

.no-results svg {
  width: 32px;
  height: 32px;
  margin: 0 auto 1rem auto;
  color: var(--text-muted);
  display: block;
}

/* ==========================================
   BLOG POST DETAIL STYLES
   ========================================== */
.post-header {
  padding-top: 100px;
  padding-bottom: 2rem;
  text-align: center;
}

.post-category {
  display: inline-block;
  margin-bottom: 0.75rem;
}

.post-header h1 {
  font-size: 2rem; /* ~32px */
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  max-width: 700px;
  margin: 0 auto 1rem auto;
  color: var(--text-primary);
}

.post-header-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.post-container {
  max-width: 700px;
  margin: 0 auto;
  padding-bottom: 4rem;
}

.post-featured-image {
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  margin-bottom: 2.5rem;
}

.post-featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-body {
  font-size: 0.875rem; /* ~14px support text */
  line-height: 1.6;
  color: var(--text-primary);
}

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

.post-body h2 {
  font-size: 1.35rem; /* ~22px */
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.3rem;
}

.post-body h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

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

.post-body li {
  margin-bottom: 0.3rem;
}

.post-body blockquote {
  border-left: 3px solid var(--accent-orange);
  padding: 0.5rem 1rem;
  margin: 1.5rem 0;
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius);
  color: var(--text-secondary);
}

.post-body code {
  font-family: var(--font-mono);
  background-color: var(--bg-secondary);
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
  font-size: 0.8rem;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.post-body pre {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: var(--border-radius);
  overflow-x: auto;
  margin: 1.5rem 0;
}

.post-body pre code {
  background-color: transparent;
  padding: 0;
  border: none;
  font-size: 0.8rem;
  color: var(--text-primary);
}

/* Post Footer */
.post-footer {
  border-top: 1px solid var(--border-color);
  margin-top: 3rem;
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.post-tags {
  display: flex;
  gap: 0.375rem;
}

.post-tag {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 0.15rem 0.5rem;
  border-radius: var(--border-radius);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.post-share {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.post-share-title {
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.post-share-buttons {
  display: flex;
  gap: 0.375rem;
}

.post-share-btn {
  background-color: var(--bg-secondary);
  width: 28px;
  height: 28px;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.75rem;
  transition: var(--transition-fast);
}

.post-share-btn:hover {
  border-color: var(--text-muted);
  color: var(--text-primary);
}

/* Back Link */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-weight: 500;
  font-size: 0.8rem;
  color: var(--accent-primary);
  margin-bottom: 1.25rem;
}

/* ==========================================
   RESPONSIVENESS (MEDIA QUERIES)
   ========================================== */
@media (max-width: 900px) {
  .posts-grid {
    grid-template-cols: repeat(2, 1fr);
  }
}

@media (max-width: 800px) {
  .hero-grid {
    grid-template-cols: 1fr;
    gap: 2rem;
    text-align: center;
  }
  .hero-buttons {
    justify-content: center;
  }
  .about-grid {
    grid-template-cols: 1fr;
    gap: 2rem;
  }
  .footer-grid {
    grid-template-cols: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 650px) {
  .posts-grid {
    grid-template-cols: 1fr;
  }
  .portfolio-grid {
    grid-template-cols: 1fr;
  }
  .section {
    padding: 3rem 0;
  }
  .section-title {
    font-size: 1.75rem;
  }
  .UnderlineNav {
    position: fixed;
    top: 60px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 60px);
    background-color: var(--bg-primary);
    flex-direction: column;
    padding: 2rem 1.5rem;
    gap: 1.25rem;
    transition: var(--transition-smooth);
    border-top: 1px solid var(--border-color);
    align-items: flex-start;
  }
  .UnderlineNav-item {
    padding: 0.5rem 0;
    width: 100%;
    border-bottom: none;
    border-left: 2px solid transparent;
    padding-left: 0.75rem;
  }
  .UnderlineNav-item.active {
    border-bottom-color: transparent;
    border-left-color: var(--accent-orange);
  }
  .UnderlineNav.open {
    left: 0;
  }
  .hamburger {
    display: flex;
  }
}

/* Card title link behavior overrides */
.post-title a, .project-title a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}
.post-title a:hover,
.post-card:hover .post-title a,
.project-title a:hover,
.project-card:hover .project-title a {
  color: var(--accent-primary);
  text-decoration: none;
}