/* Base Variables & Theme */
:root {
    --bg-color: #0E1117;              /* Deep, matte slate-ink */
    --surface-color: #101319;         /* Default surface */
    --card-bg: #161B22;               /* Elevated surface (Notion style container) */
    --border-color: #21262D;          /* Fine-line Notion divider */
    --text-primary: #E6EDF2;          /* Off-white readable text */
    --text-faded: #8B949E;            /* Muted ink/gray text */
    --primary-accent: #0f5a5e;        /* Blue emerald accent */
    --primary-container: #0f5a5e;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition-speed: 0.25s;
    --content-max-width: 768px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-mono);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Layout Container */
.container {
    width: 100%;
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Header styling */
.site-header {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
}

.prompt-slash {
    color: var(--primary-accent);
}

.prompt-dot {
    color: var(--text-primary);
    animation: terminal-blink 1.2s step-end infinite;
}

@keyframes terminal-blink {
    from, to { opacity: 1; }
    50% { opacity: 0; }
}

.header-nav {
    display: flex;
    gap: 16px;
}

.nav-icon-link {
    color: var(--text-faded);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 4px;
    transition: color var(--transition-speed), background-color var(--transition-speed);
}

.nav-icon-link:hover {
    color: var(--primary-accent);
    background-color: rgba(16, 185, 129, 0.08);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-faded);
    cursor: pointer;
    padding: 6px;
    border-radius: 4px;
    transition: color var(--transition-speed);
}

.mobile-menu-btn:hover {
    color: var(--primary-accent);
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(14, 17, 23, 0.95);
    z-index: 3000;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.mobile-nav-overlay.active {
    display: flex;
    opacity: 1;
}

.mobile-nav-overlay .mobile-nav-close {
    position: absolute;
    top: 20px;
    right: 24px;
    background: none;
    border: none;
    color: var(--text-faded);
    font-size: 28px;
    cursor: pointer;
    padding: 8px;
}

.mobile-nav-overlay .mobile-nav-close:hover {
    color: var(--primary-accent);
}

.mobile-nav-overlay .mobile-nav-link {
    font-size: 20px;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    border-radius: 4px;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.mobile-nav-overlay .mobile-nav-link:hover {
    color: var(--primary-accent);
    background-color: rgba(16, 185, 129, 0.08);
}

.mobile-nav-overlay .mobile-nav-link .material-symbols-outlined {
    font-size: 24px;
}

.mobile-nav-overlay .mobile-nav-sep {
    width: 40px;
    height: 1px;
    background-color: var(--border-color);
}

/* Responsive: Show mobile menu button, hide desktop nav */
@media (max-width: 768px) {
    .hide-mobile {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .header-nav {
        display: none;
    }
}

/* Main Content */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 64px;
    padding-top: 64px;
    padding-bottom: 64px;
}

/* Hero Section */
.hero-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hero-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-accent);
}

.hero-bio {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.bio-line.comment {
    color: var(--text-faded);
    font-size: 15px;
}

/* Content Sections */
.content-section {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.section-title {
    font-size: 20px;
    font-weight: 600;
}

.section-link {
    font-size: 12px;
    color: var(--text-faded);
    text-decoration: none;
    transition: color var(--transition-speed);
}

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

.back-link {
    font-size: 13px;
    color: var(--text-faded);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.back-link:hover {
    color: var(--primary-accent);
}

/* Application Cards Grid */
.grid-applications {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 20px;
}

@media (min-width: 600px) {
    .grid-applications {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

/* Projects Cards Grid */
.grid-projects {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 20px;
}

@media (min-width: 600px) {
    .grid-projects {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.project-lang {
    font-size: 11px;
    color: var(--primary-accent);
    border: 1px solid var(--primary-accent);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 500;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: border-color var(--transition-speed);
}

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

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.status-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    background-color: var(--primary-accent);
    border-radius: 50%;
    margin-top: 6px;
    box-shadow: 0 0 8px var(--primary-accent);
}

.card-desc {
    font-size: 13px;
    color: var(--text-faded);
    line-height: 1.5;
}

/* Photography Grid */
.grid-photography {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 32px;
}

@media (min-width: 600px) {
    .grid-photography {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.polaroid-frame {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 12px 12px 32px 12px;
    transition: border-color var(--transition-speed);
    cursor: pointer;
}

.polaroid-frame:hover {
    border-color: var(--primary-accent);
}

.polaroid-image-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background-color: var(--bg-color);
    overflow: hidden;
    border-radius: 2px;
}

.polaroid-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.95;
    transition: opacity var(--transition-speed);
}

.polaroid-frame:hover .polaroid-image {
    opacity: 1;
}

/* Writing Blog Ledger */
.blog-ledger {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--border-color);
}

.ledger-entry {
    display: flex;
    flex-direction: column;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
    text-decoration: none;
    color: var(--text-primary);
    transition: background-color var(--transition-speed);
}

.ledger-entry:hover {
    background-color: rgba(22, 27, 34, 0.5);
    padding-left: 8px;
    padding-right: 8px;
}

@media (min-width: 600px) {
    .ledger-entry {
        flex-direction: row;
        align-items: center;
    }
}

.entry-date {
    font-size: 14px;
    color: var(--text-faded);
    width: 120px;
    flex-shrink: 0;
}

.entry-title {
    font-size: 15px;
    font-weight: 500;
    transition: color var(--transition-speed);
}

.ledger-entry:hover .entry-title {
    color: var(--primary-accent);
}

/* Footer Section */
.site-footer {
    border-top: 1px solid var(--border-color);
    padding: 48px 0;
    margin-top: auto;
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
}

@media (min-width: 600px) {
    .footer-container {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-copy {
    font-size: 13px;
    color: var(--text-faded);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-link {
    font-size: 13px;
    color: var(--text-faded);
    text-decoration: none;
    transition: color var(--transition-speed);
}

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

/* Lightbox Overlay Styles */

.lightbox-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(14, 17, 23, 0.95);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity var(--transition-speed) ease-in-out;
}

.lightbox-overlay.active {
    display: flex;
    opacity: 1;
}

.lightbox-content {
    max-width: 85%;
    max-height: 80%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

#lightbox-img {
    max-width: 100%;
    max-height: 75vh;
    object-fit: contain;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.lightbox-caption {
    font-size: 12px;
    color: var(--text-faded);
    text-align: center;
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 36px;
    cursor: pointer;
    transition: color var(--transition-speed);
}

.lightbox-close:hover {
    color: var(--primary-accent);
}

.lightbox-prev, .lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 36px;
    cursor: pointer;
    padding: 16px;
    transition: color var(--transition-speed);
    user-select: none;
}

.lightbox-prev {
    left: 24px;
}

.lightbox-next {
    right: 24px;
}

.lightbox-prev:hover, .lightbox-next:hover {
    color: var(--primary-accent);
}

/* Post Content Typography & Style */
.post-content {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-primary);
    max-width: 720px;
}

.post-content p {
    margin-bottom: 24px;
}

.post-content h2, .post-content h3 {
    color: var(--text-primary);
    margin-top: 32px;
    margin-bottom: 16px;
    font-weight: 600;
}

.post-content h2 {
    font-size: 18px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.post-content h3 {
    font-size: 16px;
}

.post-content ul, .post-content ol {
    margin-bottom: 24px;
    padding-left: 20px;
}

.post-content li {
    margin-bottom: 8px;
}

.post-content code {
    font-family: 'JetBrains Mono', monospace;
    background-color: rgba(22, 27, 34, 0.6);
    border: 1px solid var(--border-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
    color: var(--primary-accent);
}

.post-content pre {
    background-color: rgba(22, 27, 34, 0.6);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: 4px;
    overflow-x: auto;
    margin-bottom: 24px;
}

.post-content pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: 13px;
    color: var(--text-primary);
}

/* Search Navigation Button */
.nav-search-btn {
    background: none;
    border: none;
    color: var(--text-faded);
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-speed);
}

.nav-search-btn:hover {
    color: var(--primary-accent);
}

/* Search Overlay Styles */
.search-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(14, 17, 23, 0.9);
    z-index: 2000;
    justify-content: center;
    align-items: flex-start;
    padding-top: 10vh;
    opacity: 0;
    transition: opacity var(--transition-speed) ease-in-out;
}

.search-overlay.active {
    display: flex;
    opacity: 1;
}

.search-container {
    width: 90%;
    max-width: 600px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

.search-header {
    display: flex;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    gap: 12px;
}

.search-icon {
    color: var(--text-faded);
}

#search-input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 15px;
    outline: none;
}

#search-input::placeholder {
    color: var(--text-faded);
}

.search-close-btn {
    background: none;
    border: none;
    color: var(--text-faded);
    font-size: 24px;
    cursor: pointer;
    transition: color var(--transition-speed);
}

.search-close-btn:hover {
    color: var(--primary-accent);
}

.search-results {
    max-height: 400px;
    overflow-y: auto;
    padding: 8px 0;
}

.search-result-item {
    display: block;
    padding: 12px 16px;
    text-decoration: none;
    color: var(--text-primary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background-color var(--transition-speed);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background-color: rgba(15, 90, 94, 0.15);
}

.search-result-title {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
}

.search-result-date {
    font-size: 11px;
    color: var(--text-faded);
}

.search-no-results {
    padding: 24px 16px;
    color: var(--text-faded);
    text-align: center;
    font-size: 13px;
}

/* Hero Section Meta Links & Details */
.hero-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    margin-top: 8px;
    width: 100%;
}

.meta-sep {
    color: var(--border-color);
}

.meta-loc {
    font-size: 12px;
}

/* Curations Layout & Cards */
.grid-curations {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 32px;
    margin-top: 16px;
}

@media (min-width: 768px) {
    .grid-curations {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.curation-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.curation-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.curation-icon {
    width: 24px;
    height: 24px;
    font-size: 24px;
    color: var(--primary-accent);
    flex-shrink: 0;
}

.curation-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.curation-subtitle {
    font-size: 11px;
    color: var(--text-faded);
    margin-top: 2px;
}

/* YouTube Video Preview Card */
.youtube-preview {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.youtube-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
    transition: opacity var(--transition-speed);
}

.youtube-preview:hover .youtube-thumbnail {
    opacity: 1;
}

.youtube-play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(14, 17, 23, 0.85);
    border: 1px solid var(--border-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-accent);
    transition: transform var(--transition-speed), color var(--transition-speed), border-color var(--transition-speed);
}

.youtube-preview:hover .youtube-play-overlay {
    transform: translate(-50%, -50%) scale(1.1);
    color: var(--text-primary);
    border-color: var(--primary-accent);
}

.youtube-play-overlay .material-symbols-outlined {
    font-size: 24px;
}