/*
 * Liquid Glass Theme for BSSG
 * Accessibility-first translucent design with high-contrast reading surfaces.
 */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");

:root {
    --page-bg: #0b101a;
    --page-bg-2: #15213a;
    --glow-a: rgba(10, 132, 255, 0.28);
    --glow-b: rgba(191, 90, 242, 0.18);
    --glass-surface: rgba(18, 26, 42, 0.9);
    --glass-surface-strong: rgba(21, 31, 50, 0.95);
    --glass-panel: rgba(27, 39, 62, 0.9);
    --glass-border: rgba(173, 202, 242, 0.26);
    --glass-border-strong: rgba(199, 221, 250, 0.38);
    --text: #f4f7ff;
    --text-muted: #c9d4ea;
    --heading: #ffffff;
    --link: #9dcfff;
    --link-hover: #cde7ff;
    --accent: #64d2ff;
    --accent-2: #0a84ff;
    --shadow-lg: 0 20px 48px rgba(2, 8, 20, 0.5);
    --shadow-sm: 0 10px 24px rgba(2, 8, 20, 0.35);
    --quote-bg: rgba(17, 31, 52, 0.86);
    --quote-border: rgba(100, 210, 255, 0.72);
    --code-inline-bg: rgba(11, 18, 31, 0.84);
    --code-inline-border: rgba(170, 199, 240, 0.35);
    --code-inline-text: #e9f2ff;
    --code-block-bg: #0f1b30;
    --code-block-border: rgba(155, 189, 234, 0.36);
    --code-block-text: #ecf3ff;
    --content-width: 980px;
    --radius-lg: 22px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --blur: 14px;
    --blur-light: 8px;
    --font-main: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    --font-headings: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: light) {
    :root {
        --page-bg: #eef4ff;
        --page-bg-2: #d8e5fb;
        --glow-a: rgba(0, 122, 255, 0.17);
        --glow-b: rgba(88, 86, 214, 0.12);
        --glass-surface: rgba(255, 255, 255, 0.9);
        --glass-surface-strong: rgba(255, 255, 255, 0.95);
        --glass-panel: rgba(249, 252, 255, 0.93);
        --glass-border: rgba(84, 117, 171, 0.24);
        --glass-border-strong: rgba(63, 97, 157, 0.34);
        --text: #1d2739;
        --text-muted: #52617c;
        --heading: #10192b;
        --link: #005fcc;
        --link-hover: #0047a3;
        --accent: #007aff;
        --accent-2: #5856d6;
        --shadow-lg: 0 20px 45px rgba(58, 92, 149, 0.18);
        --shadow-sm: 0 8px 22px rgba(58, 92, 149, 0.12);
        --quote-bg: rgba(232, 240, 255, 0.88);
        --quote-border: rgba(0, 122, 255, 0.62);
        --code-inline-bg: rgba(227, 237, 255, 0.84);
        --code-inline-border: rgba(79, 111, 170, 0.34);
        --code-inline-text: #18345c;
        --code-block-bg: #132342;
        --code-block-border: rgba(56, 93, 149, 0.44);
        --code-block-text: #ebf2ff;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 18px;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    font-family: var(--font-main);
    line-height: 1.72;
    background:
        radial-gradient(circle at 12% 10%, var(--glow-a) 0, transparent 36%),
        radial-gradient(circle at 84% 6%, var(--glow-b) 0, transparent 32%),
        linear-gradient(165deg, var(--page-bg) 0%, var(--page-bg-2) 55%, var(--page-bg) 100%);
    padding: 22px;
    position: relative;
}

body::before,
body::after {
    content: "";
    position: fixed;
    pointer-events: none;
    z-index: 0;
}

body::before {
    inset: -12% auto auto -10%;
    width: 340px;
    height: 340px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.22) 0, rgba(255, 255, 255, 0.04) 58%, transparent 74%);
    filter: blur(9px);
}

body::after {
    inset: auto -8% -14% auto;
    width: 380px;
    height: 380px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.16) 0, rgba(255, 255, 255, 0.03) 60%, transparent 76%);
    filter: blur(11px);
}

::selection {
    background: rgba(100, 210, 255, 0.35);
    color: var(--heading);
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.container {
    position: relative;
    z-index: 1;
    max-width: var(--content-width);
    margin: 0 auto;
    background: var(--glass-surface);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
}

@supports not (backdrop-filter: blur(1px)) {
    .container {
        background: var(--glass-surface-strong);
    }
}

.container::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(120deg, rgba(255, 255, 255, 0.15), transparent 28%),
        linear-gradient(330deg, rgba(255, 255, 255, 0.08), transparent 36%);
    z-index: 0;
}

header,
main,
footer {
    position: relative;
    z-index: 1;
}

header {
    padding: 30px 38px 17px;
    border-bottom: 1px solid var(--glass-border);
    background: var(--glass-surface-strong);
}

.site-title,
header h1 {
    margin: 0;
    color: var(--heading);
    font-family: var(--font-headings);
    font-size: clamp(2rem, 3.7vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
}

.site-title a {
    color: inherit;
    text-decoration: none;
}

.site-title a:hover,
.site-title a:focus {
    color: var(--link-hover);
}

header p {
    margin: 0.56rem 0 0;
    color: var(--text-muted);
    font-size: 1rem;
}

nav {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.46rem;
}

nav a {
    display: inline-flex;
    align-items: center;
    padding: 0.32rem 0.74rem;
    border-radius: 999px;
    border: 1px solid var(--glass-border-strong);
    background: var(--glass-panel);
    color: var(--text);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    backdrop-filter: blur(var(--blur-light));
    -webkit-backdrop-filter: blur(var(--blur-light));
    transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

nav a:hover,
nav a:focus {
    transform: translateY(-1px);
    background: rgba(100, 210, 255, 0.2);
    border-color: rgba(100, 210, 255, 0.55);
    color: var(--heading);
}

main {
    padding: 28px 38px 32px;
    min-height: 62vh;
}

article {
    margin-bottom: 1.25rem;
}

article.post,
article.page,
.posts-list article {
    background: var(--glass-panel);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1.16rem 1.1rem;
}

article.post + article.post,
.posts-list article + article {
    margin-top: 0.95rem;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 1.08rem 0 0.72rem;
    color: var(--heading);
    font-family: var(--font-headings);
    line-height: 1.3;
    letter-spacing: -0.01em;
}

h1 { font-size: clamp(1.72rem, 3vw, 2.24rem); }
h2 { font-size: clamp(1.4rem, 2.35vw, 1.78rem); }
h3 { font-size: clamp(1.18rem, 1.8vw, 1.4rem); }

article.post > h1,
article.page > h1,
.posts-list h2 {
    margin-top: 0;
}

p,
ul,
ol {
    margin-top: 0;
    margin-bottom: 0.95rem;
}

a {
    color: var(--link);
    text-decoration-thickness: 1px;
    text-underline-offset: 0.14em;
    text-decoration-color: rgba(157, 207, 255, 0.65);
}

a:hover,
a:focus {
    color: var(--link-hover);
    text-decoration-color: currentColor;
}

.meta,
.page-meta {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.page-meta {
    margin-bottom: 0.68rem;
}

.reading-time {
    margin-top: 0.24rem;
}

.summary {
    color: var(--text-muted);
}

.post-content {
    margin-top: 0.65rem;
}

.featured-image,
.index-image,
.tag-image,
.archive-image,
.author-image {
    margin: 0.92rem 0;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    border: 1px solid var(--glass-border-strong);
    box-shadow: 0 8px 20px rgba(2, 8, 20, 0.3);
}

.image-caption,
figcaption {
    margin-top: 0.42rem;
    color: var(--text-muted);
    font-size: 0.83rem;
    font-style: italic;
}

blockquote {
    margin: 1rem 0;
    padding: 0.72rem 0.92rem;
    border-left: 4px solid var(--quote-border);
    border-radius: var(--radius-sm);
    background: var(--quote-bg);
    color: var(--text);
}

pre,
code {
    font-family: var(--font-mono);
    font-size: 0.84rem;
}

code {
    padding: 0.09rem 0.3rem;
    border-radius: 6px;
    border: 1px solid var(--code-inline-border);
    background: var(--code-inline-bg);
    color: var(--code-inline-text);
}

pre {
    margin: 1rem 0;
    padding: 0.88rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--code-block-border);
    background: var(--code-block-bg);
    color: var(--code-block-text);
    overflow-x: auto;
}

pre code {
    padding: 0;
    border: 0;
    background: none;
    color: inherit;
}

hr {
    border: 0;
    margin: 1.28rem 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(180, 206, 242, 0.7), transparent);
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.36rem;
    margin-top: 0.84rem;
}

.tags a,
.tags-list a {
    display: inline-block;
    color: var(--text);
    text-decoration: none;
    background: var(--glass-panel);
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    padding: 0.16rem 0.54rem;
    font-size: 0.75rem;
}

.tags a:hover,
.tags a:focus,
.tags-list a:hover,
.tags-list a:focus {
    color: var(--heading);
    border-color: rgba(100, 210, 255, 0.58);
    background: rgba(100, 210, 255, 0.19);
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.tag-count {
    color: var(--text-muted);
}

.pagination {
    margin-top: 1.12rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.42rem;
}

.pagination a {
    display: inline-block;
    color: var(--text);
    text-decoration: none;
    background: var(--glass-panel);
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    padding: 0.18rem 0.62rem;
    font-size: 0.75rem;
}

.pagination a:hover,
.pagination a:focus {
    color: var(--heading);
    border-color: rgba(100, 210, 255, 0.58);
    background: rgba(100, 210, 255, 0.19);
}

.page-info {
    color: var(--text-muted);
    font-size: 0.77rem;
}

.related-posts {
    margin-top: 1.22rem;
    padding-top: 0.8rem;
    border-top: 1px dashed var(--glass-border-strong);
}

.related-posts h3 {
    margin-top: 0;
    font-size: 1.04rem;
}

.related-posts-list {
    display: grid;
    gap: 0.58rem;
}

.related-post {
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    background: var(--glass-panel);
    padding: 0.5rem 0.64rem;
}

.related-post h4 {
    margin: 0 0 0.18rem;
    font-size: 0.93rem;
}

.related-post p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.88rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.92rem 0;
}

th,
td {
    border: 1px solid var(--glass-border);
    padding: 0.38rem 0.52rem;
}

th {
    color: var(--heading);
    background: rgba(100, 210, 255, 0.14);
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

footer {
    padding: 17px 38px 24px;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
    font-size: 0.77rem;
    background: var(--glass-surface-strong);
}

footer p {
    margin: 0.3rem 0;
}

footer a {
    color: var(--link);
}

footer a:hover,
footer a:focus {
    color: var(--link-hover);
}

@media (max-width: 900px) {
    body {
        padding: 14px;
    }

    header,
    main,
    footer {
        padding-left: 22px;
        padding-right: 22px;
    }

    .site-title,
    header h1 {
        font-size: clamp(1.7rem, 7vw, 2.25rem);
    }
}

@media (max-width: 640px) {
    html {
        font-size: 16px;
    }

    body {
        padding: 10px;
    }

    .container {
        border-radius: 16px;
    }

    header,
    main,
    footer {
        padding-left: 14px;
        padding-right: 14px;
    }

    nav a {
        min-height: 38px;
    }

    article.post,
    article.page,
    .posts-list article {
        padding: 0.95rem 0.85rem;
    }

    .meta,
    .page-info,
    .pagination a {
        font-size: 0.74rem;
    }
}