/* ===========================================
   Animations
   =========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================================
   Design Tokens & Bootstrap Dark Overrides
   =========================================== */
:root,
[data-bs-theme="dark"] {
    --color-bg: #282c34;
    --color-bg-secondary: #21252b;
    --color-text: #abb2bf;
    --color-text-muted: #5c6370;
    --color-accent: #61afef;
    --color-accent-hover: #8ac6f3;
    --color-accent-muted: #98c379;
    --color-border: #3e4451;
    --color-code-bg: #21252b;

    --font-mono: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;

    --max-width: 720px;
    --header-height: 64px;

    --bs-body-bg: #282c34;
    --bs-body-color: #abb2bf;
    --bs-border-color: #3e4451;
    --bs-link-color: #61afef;
    --bs-link-hover-color: #8ac6f3;
    --bs-tertiary-bg: #21252b;
    --bs-secondary-bg: #21252b;
    --bs-emphasis-color: #abb2bf;
    --bs-body-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    --bs-font-monospace: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
}

/* ===========================================
   Focus & Caret
   =========================================== */
*:not(input):not(textarea):not(select):not([contenteditable="true"]) {
    caret-color: transparent;
}

/* ===========================================
   Body & Container
   =========================================== */
html {
    scrollbar-gutter: stable;
}

body {
    background-image: radial-gradient(circle, var(--color-border) 1px, transparent 1px);
    background-size: 24px 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: var(--max-width);
}

.site-content {
    flex: 1;
    padding: 3rem 0;
}

.site-content > .container {
    background: rgba(0, 0, 0, 0.14);
    padding: 2rem 2rem;
    border-radius: 8px;
}

/* ===========================================
   Header (frosted glass + nav underline)
   =========================================== */
.site-header {
    height: var(--header-height);
    background: rgba(40, 44, 52, 0.85) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.site-logo {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--color-text) !important;
}

.site-logo:hover {
    color: var(--color-accent) !important;
}

.nav-links .nav-link {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    font-weight: 500;
    position: relative;
    padding-bottom: 4px;
}

.nav-links .nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width 0.25s ease, left 0.25s ease;
}

.nav-links .nav-link:hover::after,
.nav-links .nav-link.active::after {
    width: 100%;
    left: 0;
}

.nav-links .nav-link:hover,
.nav-links .nav-link.active {
    color: var(--color-text);
}

.nav-social a {
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    transition: color 0.2s;
}

.nav-social a:hover {
    color: var(--color-text);
}

.nav-social i {
    font-size: 1.2rem;
}

/* ===========================================
   Hero (Homepage)
   =========================================== */
.hero {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--color-border);
    animation: fadeInUp 0.5s ease-out both;
    position: relative;
}

.hero::before {
    content: "";
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(97, 175, 239, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

.hero-avatar img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 3px solid var(--color-border);
    object-fit: cover;
    box-shadow: 0 0 20px rgba(97, 175, 239, 0.15), 0 0 40px rgba(97, 175, 239, 0.05);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.hero-avatar img:hover {
    border-color: var(--color-accent);
    box-shadow: 0 0 25px rgba(97, 175, 239, 0.25), 0 0 50px rgba(97, 175, 239, 0.1);
}

.hero h1 {
    font-size: 2rem;
    margin: 1rem 0 0.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.hero-tagline {
    color: #d19a66;
    font-size: 1.1rem;
    max-width: 480px;
    margin: 0 auto;
    line-height: 1.6;
}

.hero-social {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.25rem;
}

.hero-social a {
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    transition: color 0.2s;
}

.hero-social a:hover {
    color: #d19a66;
}

.hero-social i {
    font-size: 1.35rem;
}

/* ===========================================
   Post List (Homepage)
   =========================================== */
.post-list h2 {
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.8125rem;
    margin-bottom: 1rem;
}

.post-card {
    padding: 1.25rem 0 1.25rem 1rem;
    border-left: 3px solid transparent;
    background-image: linear-gradient(to right, var(--color-border) 2px, transparent 2px);
    background-size: 8px 1px;
    background-repeat: repeat-x;
    background-position: bottom;
    animation: fadeInUp 0.4s ease-out both;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.post-card:hover {
    transform: translateY(-2px);
    border-left-color: var(--color-accent);
}

.post-card:first-of-type {
    padding-top: 0;
}

.post-card:last-of-type {
    background-image: none;
}

.post-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1.4;
    display: inline-block;
}

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

.post-meta {
    color: #7a9e60;
    font-size: 0.8125rem;
    margin-top: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.meta-icon {
    font-size: 0.8rem;
    flex-shrink: 0;
    color: #7f848e;
}

.meta-icon + time,
.meta-icon + .post-readtime-text,
.meta-icon + span {
    margin-right: 0.4rem;
}

.post-description {
    color: var(--color-text);
    font-size: 1.05rem;
    margin-top: 0.5rem;
    line-height: 1.5;
}

/* ===========================================
   Blog Post (Article Page)
   =========================================== */
.blog-post .post-header {
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
    animation: fadeInUp 0.5s ease-out both;
}

.blog-post .post-header h1 {
    font-size: 2.25rem;
    line-height: 1.3;
    color: var(--color-accent);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.blog-post .post-header .post-meta {
    margin-top: 0.75rem;
    font-size: 0.875rem;
}

.post-tags {
    margin-top: 0.75rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    color: var(--color-accent);
    font-size: 0.8125rem;
    background: var(--color-bg-secondary);
    padding: 0.15rem 0.6rem;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: border-color 0.2s;
}

.tag:nth-child(3n+2) {
    color: var(--color-accent-muted);
}

.tag:nth-child(3n+3) {
    color: #d19a66;
}

.tag:hover {
    border-color: currentColor;
}

/* Post content typography */
.post-content h2 {
    font-size: 1.5rem;
    margin: 2.5rem 0 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    padding-left: 0.75rem;
    border-left: 3px solid var(--color-accent);
}

.post-content h3 {
    font-size: 1.25rem;
    margin: 2rem 0 0.75rem;
    font-weight: 600;
    padding-left: 0.75rem;
    border-left: 3px solid var(--color-accent-muted);
}

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

.post-content ul,
.post-content ol {
    margin: 0 0 1.25rem 1.5rem;
}

.post-content li {
    margin-bottom: 0.25rem;
}

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

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

.post-content code {
    font-family: var(--font-mono);
    background: var(--color-code-bg);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-size: 0.875em;
}

.post-content pre {
    background: var(--color-code-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1.25rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    line-height: 1.5;
}

.post-content pre code {
    background: none;
    padding: 0;
    border-radius: 0;
    font-size: 0.875rem;
}

.post-content img {
    border-radius: 8px;
    margin: 1.5rem 0;
    max-width: 100%;
    height: auto;
}

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

.post-content a {
    text-decoration: underline;
    text-underline-offset: 2px;
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9375rem;
}

.post-content th,
.post-content td {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-border);
    text-align: left;
}

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

/* ===========================================
   Post Footer (Tags, Share, Nav)
   =========================================== */
.post-footer {
    margin-top: 3rem;
    border-top: 1px solid var(--color-border);
    padding-top: 1.5rem;
}

.post-footer .post-tags {
    margin-bottom: 1.5rem;
}

.post-share {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.post-share-label {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
}

.post-share-links {
    display: flex;
    gap: 0.5rem;
}

.share-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    text-decoration: none;
}

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

.share-link.copied {
    color: #98c379;
    border-color: #98c379;
}

.share-link i {
    font-size: 1.1rem;
}

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

.post-nav-link {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    text-decoration: none;
    transition: border-color 0.2s, background 0.2s;
}

.post-nav-link:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-secondary);
}

.post-nav-direction {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.post-nav-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1.4;
}

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

.post-nav-next {
    text-align: right;
    grid-column: 2;
}

.post-nav-next .post-nav-direction {
    justify-content: flex-end;
}

/* ===========================================
   Footer
   =========================================== */
.footer-social a {
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    transition: color 0.2s;
}

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

.footer-social i {
    font-size: 1.2rem;
}

.footer-license {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

@media (max-width: 575.98px) {
    .footer-license {
        font-size: 1rem;
    }

    .footer-social i {
        font-size: 1.4rem;
    }
}

.footer-license a {
    color: var(--color-text-muted);
    text-decoration: underline;
    text-underline-offset: 2px;
}

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

/* ===========================================
   Pagination (Bootstrap overrides)
   =========================================== */
.pagination {
    --bs-pagination-bg: transparent;
    --bs-pagination-border-color: var(--color-border);
    --bs-pagination-color: var(--color-accent);
    --bs-pagination-hover-bg: var(--color-bg-secondary);
    --bs-pagination-hover-border-color: var(--color-accent);
    --bs-pagination-hover-color: var(--color-accent-hover);
    --bs-pagination-active-bg: var(--color-accent);
    --bs-pagination-active-border-color: var(--color-accent);
    --bs-pagination-active-color: #fff;
    --bs-pagination-disabled-bg: transparent;
    --bs-pagination-disabled-border-color: var(--color-border);
    --bs-pagination-disabled-color: var(--color-text-muted);
}

/* ===========================================
   Responsive
   =========================================== */
@media (max-width: 575.98px) {
    .nav-social {
        display: none !important;
    }

    .navbar-collapse {
        background: var(--color-bg-secondary);
        border: 1px solid var(--color-border);
        border-radius: 8px;
        padding: 0.75rem 1rem;
        margin-top: 0.5rem;
    }

    .nav-links .nav-link {
        font-size: 1.25rem;
        padding: 0.6rem 0;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .hero-tagline {
        font-size: 1rem;
    }

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

    .site-content {
        padding: 2rem 0;
    }

    .site-content > .container {
        padding: 1rem 0.75rem;
        border-radius: 0;
    }

    .post-card {
        padding-left: 0.5rem;
    }

    .post-meta {
        font-size: 0.75rem;
        gap: 0.35rem;
        flex-wrap: wrap;
    }

    .blog-post .post-header .post-meta {
        font-size: 0.8rem;
    }

    body {
        font-size: 1.2rem;
    }

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

    .post-nav-next {
        text-align: left;
        grid-column: 1;
    }

    .post-nav-next .post-nav-direction {
        justify-content: flex-start;
    }

    .post-share {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
}