/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #fafafa;
    --bg-secondary: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --accent-color: #0066cc;
    --accent-hover: #0052a3;
    --border-color: #e5e5e5;
    --tag-bg: #f5f5f5;
    --tag-text: #666666;
}

body.dark-mode {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --text-primary: #e5e5e5;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    --accent-color: #3b82f6;
    --accent-hover: #60a5fa;
    --border-color: #2a2a2a;
    --tag-bg: #2a2a2a;
    --tag-text: #a3a3a3;
}

body {
    font-family: 'IBM Plex Mono', monospace;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
    position: relative;
}

/* Background Noise Effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    z-index: 0;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Snow Animation */
.snow-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.snowflake {
    position: absolute;
    top: -50px;
    color: rgba(100, 150, 255, 0.6);
    font-size: 1.5rem;
    user-select: none;
}

.snowflake:nth-child(1) {
    left: 10%;
    animation: fall1 10s linear infinite;
    font-size: 1.2rem;
    opacity: 0.8;
}

.snowflake:nth-child(2) {
    left: 20%;
    animation: fall2 12s linear infinite 2s;
    font-size: 1.6rem;
    opacity: 0.6;
}

.snowflake:nth-child(3) {
    left: 30%;
    animation: fall3 8s linear infinite 4s;
    font-size: 1.3rem;
    opacity: 0.7;
}

.snowflake:nth-child(4) {
    left: 40%;
    animation: fall4 14s linear infinite 1s;
    font-size: 1.8rem;
    opacity: 0.5;
}

.snowflake:nth-child(5) {
    left: 50%;
    animation: fall1 11s linear infinite 3s;
    font-size: 1.4rem;
    opacity: 0.9;
}

.snowflake:nth-child(6) {
    left: 60%;
    animation: fall2 9s linear infinite 5s;
    font-size: 1.1rem;
    opacity: 0.7;
}

.snowflake:nth-child(7) {
    left: 70%;
    animation: fall3 13s linear infinite 2s;
    font-size: 1.7rem;
    opacity: 0.6;
}

.snowflake:nth-child(8) {
    left: 80%;
    animation: fall4 10s linear infinite 4s;
    font-size: 1.5rem;
    opacity: 0.8;
}

.snowflake:nth-child(9) {
    left: 90%;
    animation: fall1 12s linear infinite 1s;
    font-size: 1.3rem;
    opacity: 0.7;
}

.snowflake:nth-child(10) {
    left: 95%;
    animation: fall2 11s linear infinite;
    font-size: 1.6rem;
    opacity: 0.6;
}

@keyframes fall1 {
    0% {
        transform: translateY(0) translateX(0) rotate(0deg);
    }
    25% {
        transform: translateY(25vh) translateX(10px) rotate(90deg);
    }
    50% {
        transform: translateY(50vh) translateX(0) rotate(180deg);
    }
    75% {
        transform: translateY(75vh) translateX(-10px) rotate(270deg);
    }
    100% {
        transform: translateY(100vh) translateX(0) rotate(360deg);
    }
}

@keyframes fall2 {
    0% {
        transform: translateY(0) translateX(0) rotate(0deg);
    }
    25% {
        transform: translateY(25vh) translateX(-15px) rotate(-90deg);
    }
    50% {
        transform: translateY(50vh) translateX(0) rotate(-180deg);
    }
    75% {
        transform: translateY(75vh) translateX(15px) rotate(-270deg);
    }
    100% {
        transform: translateY(100vh) translateX(0) rotate(-360deg);
    }
}

@keyframes fall3 {
    0% {
        transform: translateY(0) translateX(0) rotate(0deg);
    }
    33% {
        transform: translateY(33vh) translateX(20px) rotate(120deg);
    }
    66% {
        transform: translateY(66vh) translateX(-20px) rotate(240deg);
    }
    100% {
        transform: translateY(100vh) translateX(0) rotate(360deg);
    }
}

@keyframes fall4 {
    0% {
        transform: translateY(0) translateX(0) rotate(0deg);
    }
    33% {
        transform: translateY(33vh) translateX(-25px) rotate(-120deg);
    }
    66% {
        transform: translateY(66vh) translateX(25px) rotate(-240deg);
    }
    100% {
        transform: translateY(100vh) translateX(0) rotate(-360deg);
    }
}

/* App Container - Centered Layout */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

/* Decorative Corner Borders */
.corner-tl, .corner-tr, .corner-bl, .corner-br {
    position: fixed;
    width: 2rem;
    height: 2rem;
    border-color: var(--border-color);
    pointer-events: none;
    z-index: 10;
}

.corner-tl {
    top: 1rem;
    left: 1rem;
    border-top: 2px solid var(--border-color);
    border-left: 2px solid var(--border-color);
    border-top-left-radius: 0.5rem;
}

.corner-tr {
    top: 1rem;
    right: 1rem;
    border-top: 2px solid var(--border-color);
    border-right: 2px solid var(--border-color);
    border-top-right-radius: 0.5rem;
}

.corner-bl {
    bottom: 1rem;
    left: 1rem;
    border-bottom: 2px solid var(--border-color);
    border-left: 2px solid var(--border-color);
    border-bottom-left-radius: 0.5rem;
}

.corner-br {
    bottom: 1rem;
    right: 1rem;
    border-bottom: 2px solid var(--border-color);
    border-right: 2px solid var(--border-color);
    border-bottom-right-radius: 0.5rem;
}

/* Horizontal Navigation */
.navbar {
    width: 100%;
    display: flex;
    justify-content: center;
    padding: 2rem;
    position: relative;
}

.nav-content {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    max-width: 48rem;
    width: 100%;
    gap: 2rem;
}

.nav-left {
    display: flex;
    justify-content: flex-start;
}

.nav-center {
    display: flex;
    flex-direction: row;
    gap: 3rem;
    align-items: center;
    justify-content: center;
}

.nav-right {
    display: flex;
    justify-content: flex-end;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

.nav-link.back-link.hidden {
    visibility: hidden;
    pointer-events: none;
}

.dark-mode-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.125rem;
    padding: 0;
    cursor: pointer;
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dark-mode-toggle:hover {
    color: var(--text-primary);
}

/* Main Content - Centered */
.main-content {
    flex: 1;
    width: 100%;
    max-width: 48rem;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Home Page */
.home-container {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
}

.home-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.home-logo {
    font-size: 4rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
}

.home-logo .cursor {
    position: absolute;
    right: -0.7em;
    top: 50%;
    transform: translateY(-50%);
    width: 0.6em;
    height: 1em;
    background-color: var(--text-primary);
    animation: blink 1s step-end infinite;
}

.home-logo .cursor.slow-blink {
    animation: blink 2s step-end infinite;
}

.home-logo .cursor.stopped {
    animation: none;
    opacity: 0;
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

.home-github {
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.home-github.visible {
    opacity: 1;
}

.home-github:hover {
    transform: scale(1.1);
    transition: opacity 1s ease-in-out, transform 0.2s ease;
}

.github-link {
    color: var(--text-secondary);
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.xmas-tree {
    position: fixed;
    bottom: 15rem;
    right: 2rem;
    opacity: 1;
    transition: opacity 1s ease-in-out;
    pointer-events: none;
    z-index: 1;
}

.tree-art {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    line-height: 1.1;
    color: #2d5016;
    margin: 0;
    white-space: pre;
    display: block;
    text-align: left;
}

.dark-mode .tree-art {
    color: #4a7c2f;
}

.tree-art * {
    white-space: pre;
}

.tree-art .light {
    color: #2d5016;
    transition: all 0.3s ease;
    display: inline;
    white-space: pre;
}

.dark-mode .tree-art .light {
    color: #4a7c2f;
}

.tree-art .light.lit {
    color: #ffd700;
    text-shadow: 0 0 10px #ffd700, 0 0 20px #ffa500;
    animation: twinkle 2s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% {
        opacity: 1;
        text-shadow: 0 0 10px #ffd700, 0 0 20px #ffa500;
    }
    50% {
        opacity: 0.6;
        text-shadow: 0 0 5px #ffd700, 0 0 10px #ffa500;
    }
}

/* Projects Page */
.projects-container {
    width: 100%;
}

.projects-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.project-card {
    background: var(--bg-secondary);
    border: 2px solid var(--bg-secondary);
    border-radius: 1rem;
    padding: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.1s;
}

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

.project-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.project-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.project-github-link {
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

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

.project-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

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

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.project-tags .tag {
    background-color: var(--bg-secondary);
    color: var(--tag-text);
    padding: 0.25rem 0.625rem;
    border-radius: 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
}

/* Project View Page */
.project-view-container {
    width: 100%;
    max-width: 48rem;
    margin: 0 auto;
}

.project-view {
    background: var(--bg-secondary);
    border: 2px solid var(--bg-secondary);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.project-view .project-header {
    position: relative;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--bg-primary);
    padding-bottom: 1.5rem;
}

.project-view .project-info {
    display: block;
    padding-right: 12rem;
}

.project-view .project-summary {
    display: block;
    color: var(--text-secondary);
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.6;
    margin: 0 0 0.75rem 0;
    text-align: left;
}

.project-view .project-tags {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.5rem;
    margin: 0;
}

.project-view .project-github-button {
    position: absolute;
    top: 0;
    right: 0;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    background: var(--bg-primary);
    border-radius: 0.5rem;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.project-github-button:hover {
    background: var(--bg-secondary);
}

.project-view .project-content {
    color: var(--text-primary);
    line-height: 1.7;
}

.project-view .project-content h1,
.project-view .project-content h2,
.project-view .project-content h3 {
    color: var(--text-primary);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.project-view .project-content h1 {
    font-size: 1.75rem;
}

.project-view .project-content h2 {
    font-size: 1.5rem;
}

.project-view .project-content h3 {
    font-size: 1.25rem;
}

.project-view .project-content p {
    margin-bottom: 1rem;
}

.project-view .project-content ul,
.project-view .project-content ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.project-view .project-content li {
    margin-bottom: 0.5rem;
}

.project-view .project-content code {
    background: var(--bg-primary);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.9em;
}

.project-view .project-content pre {
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    margin-bottom: 1rem;
}

.project-view .project-content pre code {
    background: none;
    padding: 0;
}

/* Contacts Page */
.contacts-container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
}

.contacts-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 18rem;
}

.contact-link-wrapper {
    text-decoration: none;
    color: inherit;
}

.contact-button {
    padding: 0.5rem;
    min-width: 0;
    border-radius: 1rem;
    background: var(--bg-secondary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
    border: 2px solid var(--bg-secondary);
}

.contact-button:hover {
    border-color: var(--accent-color);
    transform: scale(1.05);
}

.contact-button-inner {
    width: 15rem;
    display: flex;
    gap: 1rem;
    padding: 0.25rem;
    align-items: center;
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
}

.contact-text {
    flex: 1;
}

.contact-text p {
    margin: 0;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

/* Post List */
.post-list-container {
    width: 100%;
}

.page-title {
    font-size: 2rem;
    margin-bottom: 2.5rem;
    color: var(--text-primary);
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Tag Filter */
.tag-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
}

.tag-filter-btn {
    background: var(--bg-secondary);
    border: 2px solid var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.1s;
}

.tag-filter-btn:hover {
    border-color: var(--accent-color);
    color: var(--text-primary);
}

.tag-filter-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

.post-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Post Cards */
.post-card {
    background: var(--bg-secondary);
    border: 2px solid var(--bg-secondary);
    border-radius: 1rem;
    padding: 1.25rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.1s;
}

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

.post-card-header {
    margin-bottom: 0.75rem;
}

.post-title-link {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.375rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    transition: color 0.2s;
}

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

.post-date {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    margin-top: 0.5rem;
    font-weight: 500;
}

.post-excerpt {
    color: var(--text-secondary);
    margin: 1rem 0;
    line-height: 1.7;
    font-size: 0.9375rem;
}

/* Tags */
.post-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin: 1rem 0;
}

.tag {
    background-color: var(--bg-secondary);
    color: var(--tag-text);
    padding: 0.25rem 0.625rem;
    border-radius: 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    border: 2px solid var(--bg-secondary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.1s;
    cursor: pointer;
}

.tag:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.read-more {
    display: inline-block;
    margin-top: 1rem;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.read-more:hover {
    color: var(--accent-hover);
}

/* Individual Post View */
.post-view-container {
    width: 100%;
}

.post-full {
    background: var(--bg-secondary);
    border: 2px solid var(--bg-secondary);
    border-radius: 1rem;
    padding: 3rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.post-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
    margin-bottom: 2.5rem;
}

.post-title {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.post-content {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-primary);
}

/* Markdown HTML Content Styles */
.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.post-content h1 {
    font-size: 1.875rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}
.post-content h2 {
    font-size: 1.5rem;
    margin-top: 2rem;
}
.post-content h3 { font-size: 1.25rem; }
.post-content h4 { font-size: 1.125rem; }
.post-content h5 { font-size: 1rem; }
.post-content h6 { font-size: 0.9rem; color: var(--text-secondary); }

.post-content p {
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

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

.post-content li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.post-content strong {
    font-weight: 600;
    color: var(--text-primary);
}

.post-content em {
    font-style: italic;
}

.post-content code {
    background: var(--tag-bg);
    color: var(--text-primary);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.875em;
    border: 1px solid var(--border-color);
}

.post-content pre {
    background: var(--tag-bg);
    padding: 1.25rem;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1.5rem 0;
    border: 1px solid var(--border-color);
}

.post-content pre code {
    background: none;
    padding: 0;
    border-radius: 0;
    border: none;
}

.post-content a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s;
    border-bottom: 1px solid transparent;
}

.post-content a:hover {
    color: var(--accent-hover);
    border-bottom-color: var(--accent-color);
}

.post-content blockquote {
    border-left: 3px solid var(--border-color);
    padding-left: 1.25rem;
    margin: 1.5rem 0;
    color: var(--text-secondary);
    font-style: italic;
}

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

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

.post-content th {
    background: var(--tag-bg);
    font-weight: 600;
    font-size: 0.9375rem;
}

.post-content td {
    color: var(--text-secondary);
}

.post-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 2.5rem 0;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    margin: 1.5rem 0;
    border: 1px solid var(--border-color);
}

.post-navigation {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--border-color);
}

.back-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.back-link:hover {
    text-decoration: underline;
}

/* Error Page */
.error-container {
    text-align: center;
    padding: 4rem 2rem;
}

.error-container h1 {
    font-size: 2rem;
    color: #e74c3c;
    margin-bottom: 1rem;
}

/* About Page */
.about-container {
    width: 100%;
}

.about-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 3rem;
    max-width: 800px;
    margin: 0 auto;
    transition: background-color 0.3s ease;
}

.about-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
}

.about-header h1 {
    font-size: 2rem;
    color: var(--text-primary);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.about-body {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
}

.about-body p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

.about-body h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.about-body ul {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.about-body li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.about-navigation {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* Footer */
.footer {
    background-color: transparent;
    color: var(--text-tertiary);
    text-align: center;
    padding: 2rem;
    width: 100%;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    /* Adjust Christmas tree for mobile */
    .xmas-tree {
        bottom: 5rem;
        right: 0.5rem;
        font-size: 0.6rem;
    }

    .tree-art {
        font-size: 0.5rem;
    }

    .nav-content {
        flex-direction: column;
        gap: 0.25rem;
        padding: 0.75rem 1rem;
        align-items: center;
    }

    .nav-left, .nav-center, .nav-right {
        width: auto;
        justify-content: center;
    }

    .nav-center {
        gap: 2rem;
    }

    .nav-link {
        font-size: 0.95rem;
    }

    /* Keep back button visible on mobile - arrow only */
    .nav-left {
        justify-content: center;
    }

    .nav-link.back-link {
        font-size: 1.5rem;
        width: 2.5rem;
        height: 2.5rem;
        text-indent: 0;
        overflow: hidden;
        color: transparent;
    }

    /* Show only arrow using before */
    .nav-link.back-link::before {
        content: "←";
        position: absolute;
        color: var(--text-secondary);
        text-indent: 0;
    }

    .nav-link.back-link:hover::before {
        color: var(--text-primary);
    }

    /* Scale down home logo for mobile */
    .home-logo {
        font-size: 2rem;
    }

    .home-github svg {
        width: 20px;
        height: 20px;
    }

    .main-content {
        padding: 1rem;
    }

    /* Make cards more compact on mobile */
    .project-card, .post-card {
        padding: 0.75rem;
    }

    /* Ensure buttons are touch-friendly */
    .project-github-button,
    .project-github-link {
        min-height: 44px;
        padding: 0.5rem 1rem;
    }

    .post-full {
        padding: 2rem 1.5rem;
    }

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

    .about-content {
        padding: 2rem 1.5rem;
    }

    .about-header h1 {
        font-size: 1.75rem;
    }

    .corner-tl, .corner-tr, .corner-bl, .corner-br {
        width: 1.5rem;
        height: 1.5rem;
    }
}