/* ============================================
   f42/ew — dark cold transparent
   Fonts: Helvetica Neue + Noto Sans JP
   ============================================ */

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

:root {
    --bg-primary: #0a0e17;
    --bg-surface: rgba(15, 22, 36, 0.6);
    --bg-glass: rgba(20, 30, 52, 0.35);
    --border-glass: rgba(80, 120, 180, 0.15);
    --text-primary: #c8d6e5;
    --text-secondary: rgba(160, 180, 210, 0.7);
    --text-muted: rgba(130, 155, 185, 0.45);
    --accent: #4a8eff;
    --accent-dim: rgba(74, 142, 255, 0.15);
    --link: #5e9fff;
    --link-hover: #8ab8ff;
}

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

body {
    font-family: "Helvetica Neue", "Noto Sans JP", sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    padding: 3rem 1.5rem;
    max-width: 640px;
    margin: 0 auto;
    background-image:
        radial-gradient(
            ellipse at 20% 0%,
            rgba(40, 70, 130, 0.12) 0%,
            transparent 60%
        ),
        radial-gradient(
            ellipse at 80% 100%,
            rgba(30, 50, 100, 0.08) 0%,
            transparent 50%
        );
    flex-direction: column;
    display: flex;
}

footer {
    font-family: "helvetica neue";
    margin-top: auto;
}
footer a {
    padding: 0.4rem;
    width: 100%;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 4px;
}
/* --- Hero section (index) --- */
.hero {
    padding: 2rem 0 3rem;
    border-bottom: 1px solid var(--border-glass);
    margin-bottom: 3rem;
}

.hero .name {
    font-size: 1.8rem;
    font-weight: 300;
    letter-spacing: 0.08em;
    color: var(--text-primary);
}

.hero .days {
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.hero .days span {
    color: var(--accent);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
}

/* --- Posts list (index) --- */
.posts-header {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1.2rem;
}

.posts-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.posts-list li {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 0.75rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 6px;
    transition:
        background 0.2s ease,
        border-color 0.2s ease;
}

.posts-list li:hover {
    background: rgba(25, 40, 65, 0.45);
    border-color: rgba(80, 120, 180, 0.3);
}

.posts-list li a {
    color: var(--link);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    transition: color 0.2s ease;
}

.posts-list li a:hover {
    color: var(--link-hover);
}

.posts-list li .date {
    font-size: 0.75rem;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    flex-shrink: 0;
    margin-left: 1.5rem;
}

/* ============================================
   Post content — .md から生成される素の HTML 用
   ============================================ */
h1 {
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    color: var(--text-primary);
    margin: 2rem 0 1rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--border-glass);
}

h2 {
    font-size: 1.15rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    color: var(--text-primary);
    margin: 1.8rem 0 0.8rem;
}

h3 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin: 1.4rem 0 0.6rem;
}

h4,
h5,
h6 {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin: 1.2rem 0 0.5rem;
}

p {
    margin: 0.8rem 0;
    color: var(--text-primary);
    line-height: 1.8;
}

a {
    color: var(--link);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

strong {
    font-weight: 600;
    color: #dce6f0;
}

em {
    font-style: italic;
    color: var(--text-secondary);
}

/* lists inside posts */
ul,
ol {
    margin: 0.8rem 0;
    padding-left: 1.5rem;
}

li {
    margin: 0.3rem 0;
    color: var(--text-primary);
    line-height: 1.7;
}

li::marker {
    color: var(--text-muted);
}

/* code */
code {
    font-family: "SF Mono", "Fira Code", monospace;
    font-size: 0.85em;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 4px;
    padding: 0.15em 0.4em;
    color: var(--accent);
}

pre {
    margin: 1.2rem 0;
    padding: 1rem 1.2rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: 6px;
    overflow-x: auto;
}

pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.85rem;
    color: var(--text-primary);
}

/* blockquote */
blockquote {
    margin: 1.2rem 0;
    padding: 0.8rem 1.2rem;
    border-left: 3px solid var(--accent-dim);
    background: var(--bg-glass);
    border-radius: 0 6px 6px 0;
    color: var(--text-secondary);
}

blockquote p {
    color: var(--text-secondary);
    margin: 0.3rem 0;
}

/* hr */
hr {
    border: none;
    border-top: 1px solid var(--border-glass);
    margin: 2rem 0;
}

/* images */
img {
    max-width: 100%;
    border-radius: 6px;
    margin: 1rem 0;
}

/* table */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.2rem 0;
}

th,
td {
    padding: 0.5rem 0.8rem;
    border: 1px solid var(--border-glass);
    text-align: left;
    font-size: 0.9rem;
}

th {
    background: var(--bg-glass);
    color: var(--text-secondary);
    font-weight: 500;
}

/* --- Tags --- */
.tag {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-dim);
    border: 1px solid rgba(74, 142, 255, 0.2);
    border-radius: 3px;
    padding: 0.1em 0.5em;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    margin-top: 0.3rem;
}

.post-main {
    display: flex;
    flex-direction: column;
    min-width: 0;
    width: 100%;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.3rem;
    flex-wrap: wrap;
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    margin-bottom: 1.5rem;
}

/* --- Empty state --- */
.empty {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
}

/* --- Responsive --- */
@media (max-width: 480px) {
    body {
        padding: 2rem 1rem;
    }

    .hero .name {
        font-size: 1.4rem;
    }

    .posts-list li {
        flex-direction: column;
        gap: 0.25rem;
    }

    .posts-list li .date {
        margin-left: 0;
    }
}