/* ============================================================
 *  Papermod theme — magazine layout, red accent, system fonts.
 * ============================================================ */
:root {
    --pm-bg:        #ffffff;
    --pm-fg:        #1a1a1a;
    --pm-muted:     #6b7280;
    --pm-border:    #e5e7eb;
    --pm-accent:    #dc2626;     /* red-600 */
    --pm-accent-h:  #b91c1c;     /* red-700 */
    --pm-link:      #1d4ed8;     /* blue-700 */
    --pm-card:      #fafafa;
    --pm-radius:    6px;
    --pm-content:   780px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--pm-bg);
    color: var(--pm-fg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.65;
}

a       { color: var(--pm-link); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; display: block; }

.pm-container {
    width: 100%;
    max-width: var(--pm-content);
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* -------- Header -------- */
.pm-header {
    border-bottom: 1px solid var(--pm-border);
    background: var(--pm-bg);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: saturate(180%) blur(10px);
}
.pm-header .pm-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-top: 0.85rem;
    padding-bottom: 0.85rem;
    flex-wrap: wrap;
}
.pm-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--pm-fg);
    letter-spacing: -0.01em;
    text-decoration: none;
}
.pm-brand:hover { color: var(--pm-accent); text-decoration: none; }

.pm-nav {
    display: flex;
    gap: 1.1rem;
    align-items: center;
    flex: 1;
    margin-left: 1rem;
}
.pm-nav a {
    color: var(--pm-fg);
    font-size: 0.95rem;
    text-decoration: none;
}
.pm-nav a:hover { color: var(--pm-accent); }

.pm-search {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.pm-search input[type="search"] {
    border: 1px solid var(--pm-border);
    border-radius: var(--pm-radius);
    padding: 0.4rem 0.7rem;
    font-size: 0.92rem;
    background: var(--pm-card);
    min-width: 180px;
}
.pm-search button {
    border: 1px solid var(--pm-border);
    background: var(--pm-card);
    border-radius: var(--pm-radius);
    padding: 0.35rem 0.55rem;
    cursor: pointer;
    font-size: 0.9rem;
}

/* -------- Hero -------- */
.pm-hero {
    padding: 2.5rem 0 1.5rem;
    text-align: center;
    border-bottom: 1px solid var(--pm-border);
    margin-bottom: 2rem;
}
.pm-hero-title {
    font-size: 2.2rem;
    margin: 0 0 0.5rem;
    letter-spacing: -0.02em;
}
.pm-hero-tagline {
    color: var(--pm-muted);
    font-size: 1.05rem;
    margin: 0;
}

/* -------- Feed (post cards) -------- */
.pm-feed { padding: 0.5rem 0 2rem; }

.pm-card {
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--pm-border);
}
.pm-card:last-child { border-bottom: none; }
.pm-card-title {
    font-size: 1.5rem;
    margin: 0 0 0.4rem;
    letter-spacing: -0.01em;
}
.pm-card-title a {
    color: var(--pm-fg);
    text-decoration: none;
}
.pm-card-title a:hover { color: var(--pm-accent); }

.pm-card-meta {
    color: var(--pm-muted);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}
.pm-dot { margin: 0 0.4em; }

.pm-card-excerpt {
    margin: 0.4rem 0 0.6rem;
    color: var(--pm-fg);
}

.pm-read-more {
    color: var(--pm-accent);
    font-size: 0.9rem;
    font-weight: 600;
}
.pm-read-more:hover { color: var(--pm-accent-h); text-decoration: underline; }

.pm-empty {
    padding: 3rem 0;
    text-align: center;
    color: var(--pm-muted);
}

/* -------- Pagination -------- */
.pm-pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
    border-top: 1px solid var(--pm-border);
    margin-top: 1.5rem;
}
.pm-pg {
    color: var(--pm-link);
    text-decoration: none;
    font-size: 0.95rem;
}
.pm-pg:hover { text-decoration: underline; }
.pm-pg-disabled { color: var(--pm-muted); }
.pm-pg-info { color: var(--pm-muted); font-size: 0.9rem; }

/* -------- Single post -------- */
.pm-post { padding: 2rem 0; }
.pm-post-header { margin-bottom: 1.5rem; }
.pm-post-title {
    font-size: 2.25rem;
    margin: 0 0 0.6rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
}
.pm-post-meta { color: var(--pm-muted); font-size: 0.9rem; }

.pm-post-body {
    font-size: 1.05rem;
    line-height: 1.75;
}
.pm-post-body h2 { margin-top: 2rem; font-size: 1.6rem; }
.pm-post-body h3 { margin-top: 1.5rem; font-size: 1.3rem; }
.pm-post-body p, .pm-post-body ul, .pm-post-body ol { margin: 1rem 0; }
.pm-post-body pre {
    background: #0f172a;
    color: #e2e8f0;
    padding: 1rem;
    border-radius: var(--pm-radius);
    overflow-x: auto;
    font-size: 0.92rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.pm-post-body code {
    background: var(--pm-card);
    padding: 0.15rem 0.35rem;
    border-radius: 3px;
    font-size: 0.92em;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.pm-post-body pre code { background: transparent; padding: 0; }
.pm-post-body blockquote {
    border-left: 4px solid var(--pm-accent);
    margin: 1.25rem 0;
    padding: 0.4rem 1rem;
    color: var(--pm-muted);
    font-style: italic;
}

.pm-post-footer {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--pm-border);
}
.pm-back { color: var(--pm-link); }

/* -------- Page -------- */
.pm-page { padding: 2rem 0; }
.pm-page-title {
    font-size: 2rem;
    letter-spacing: -0.02em;
    margin: 0 0 1rem;
}
.pm-page-body { font-size: 1.05rem; line-height: 1.7; }

/* -------- Search -------- */
.pm-search-page { padding: 2rem 0; }
.pm-search-form {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}
.pm-search-form input[type="search"] {
    flex: 1;
    padding: 0.55rem 0.8rem;
    border: 1px solid var(--pm-border);
    border-radius: var(--pm-radius);
    font-size: 1rem;
}
.pm-search-form button {
    padding: 0.55rem 1.1rem;
    background: var(--pm-accent);
    color: white;
    border: none;
    border-radius: var(--pm-radius);
    cursor: pointer;
    font-size: 0.95rem;
}
.pm-search-form button:hover { background: var(--pm-accent-h); }

.pm-search-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--pm-border);
}
.pm-meta { color: var(--pm-muted); font-size: 0.9rem; margin: 0; }
.pm-search-filters { display: flex; gap: 0.85rem; flex-wrap: wrap; font-size: 0.88rem; }
.pm-search-filters select {
    border: 1px solid var(--pm-border);
    border-radius: 4px;
    padding: 0.25rem 0.4rem;
    margin-left: 0.3rem;
}

.pm-results { list-style: none; padding: 0; margin: 0; }
.pm-hit {
    padding: 1rem 0;
    border-bottom: 1px solid var(--pm-border);
}
.pm-hit h3 { margin: 0 0 0.3rem; font-size: 1.15rem; }
.pm-hit a { color: var(--pm-fg); }
.pm-hit a:hover h3 { color: var(--pm-accent); }
.pm-snippet { color: var(--pm-fg); margin: 0.25rem 0; font-size: 0.95rem; }
.pm-snippet mark { background: #fef3c7; padding: 0.05rem 0.2rem; }
.pm-hit time { color: var(--pm-muted); font-size: 0.82rem; }

.pm-no-results {
    padding: 2rem 0;
    text-align: center;
    color: var(--pm-muted);
}

/* -------- Comments -------- */
.pm-comments {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--pm-border);
}
.pm-comments h2 { margin-top: 0; font-size: 1.3rem; }

.pm-flash {
    padding: 0.75rem 1rem;
    border-radius: var(--pm-radius);
    margin-bottom: 1rem;
    font-size: 0.92rem;
}
.pm-flash-pending   { background: #fef3c7; color: #92400e; }
.pm-flash-published, .pm-flash-thanks { background: #d1fae5; color: #065f46; }
.pm-flash-error     { background: #fee2e2; color: #991b1b; }

.pm-comment-list { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.pm-comment {
    padding: 1rem 0;
    border-bottom: 1px solid var(--pm-border);
}
.pm-comment-meta {
    font-size: 0.88rem;
    color: var(--pm-muted);
    margin-bottom: 0.4rem;
}
.pm-comment-meta a { color: var(--pm-fg); font-weight: 500; }
.pm-comment-meta time { margin-left: 0.5rem; }

.pm-comment-form {
    display: grid;
    gap: 0.75rem;
    background: var(--pm-card);
    padding: 1.25rem;
    border-radius: var(--pm-radius);
}
.pm-comment-form label {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    font-size: 0.9rem;
    color: var(--pm-muted);
}
.pm-comment-form input,
.pm-comment-form textarea {
    border: 1px solid var(--pm-border);
    border-radius: 4px;
    padding: 0.5rem 0.7rem;
    font-size: 0.95rem;
    font-family: inherit;
    background: white;
}
.pm-comment-form button {
    justify-self: start;
    padding: 0.55rem 1.25rem;
    background: var(--pm-accent);
    color: white;
    border: none;
    border-radius: var(--pm-radius);
    cursor: pointer;
    font-size: 0.95rem;
}
.pm-comment-form button:hover { background: var(--pm-accent-h); }
.pm-comments-closed {
    color: var(--pm-muted);
    font-style: italic;
    text-align: center;
    padding: 1rem;
}

/* -------- Archive -------- */
.pm-archive { padding: 2rem 0; }
.pm-archive-header { margin-bottom: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--pm-border); }
.pm-archive-title { font-size: 2rem; margin: 0 0 0.4rem; letter-spacing: -0.02em; }
.pm-archive-desc { color: var(--pm-muted); margin: 0; }
.pm-archive-list { list-style: none; padding: 0; margin: 0; }
.pm-archive-item { display: flex; gap: 1rem; padding: 0.5rem 0; border-bottom: 1px solid var(--pm-border); }
.pm-archive-date { color: var(--pm-muted); font-size: 0.88rem; min-width: 110px; }
.pm-archive-link { color: var(--pm-fg); }
.pm-archive-link:hover { color: var(--pm-accent); }

/* -------- Footer -------- */
.pm-footer {
    border-top: 1px solid var(--pm-border);
    padding: 1.5rem 0;
    margin-top: 3rem;
    color: var(--pm-muted);
    font-size: 0.88rem;
    text-align: center;
}

/* -------- Responsive -------- */
@media (max-width: 720px) {
    .pm-header .pm-container { gap: 0.5rem; }
    .pm-nav { gap: 0.7rem; margin-left: 0; }
    .pm-search input[type="search"] { min-width: 130px; }
    .pm-hero-title { font-size: 1.8rem; }
    .pm-post-title { font-size: 1.7rem; }
    .pm-card-title { font-size: 1.3rem; }
}