/*
 * Postnomic SDK — shared default stylesheet
 * ------------------------------------------
 * Styles every `pn-*` class emitted by PostnomicCssClasses (Semantic mode)
 * using ONLY the `--pn-*` custom properties declared below. Hosts opt in to
 * theming by overriding `--pn-*` on `.pn-blog` (or any ancestor) — no class
 * overrides required.
 *
 * Served as:
 *   _content/Postnomic.Client.Blazor/postnomic-blog.css
 *   _content/Postnomic.Client.AspNetCore/postnomic-blog.css
 */

.pn-blog {
    --pn-font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --pn-font-heading: var(--pn-font);
    --pn-max-width: 1200px;
    --pn-surface: #ffffff;
    --pn-surface-variant: #f6f7f9;
    --pn-text: #1a1a1a;
    --pn-text-muted: #6b7280;
    --pn-primary: #2a5bd7;
    --pn-on-primary: #ffffff;
    --pn-border: #e5e7eb;
    --pn-link: var(--pn-primary);
    --pn-radius: 8px;
    --pn-radius-lg: 14px;
    --pn-space-xs: 4px;
    --pn-space-sm: 8px;
    --pn-space-md: 16px;
    --pn-space-lg: 24px;
    --pn-space-xl: 40px;

    max-width: var(--pn-max-width);
    margin: 0 auto;
    padding: 0 var(--pn-space-md);
    font-family: var(--pn-font);
    color: var(--pn-text);
}

.pn-blog a {
    color: var(--pn-link);
}

.pn-blog img {
    max-width: 100%;
    height: auto;
}

.pn-text-center {
    text-align: center;
}

/* ---------------------------------------------------------------------
 * Header
 * ------------------------------------------------------------------- */

.pn-header {
    text-align: center;
    padding: var(--pn-space-xl) 0;
    margin-bottom: var(--pn-space-lg);
    border-bottom: 1px solid var(--pn-border);
}

.pn-title {
    font-family: var(--pn-font-heading);
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 var(--pn-space-sm);
    color: var(--pn-text);
}

.pn-lead {
    font-size: 1.125rem;
    color: var(--pn-text-muted);
    margin: 0;
}

/* ---------------------------------------------------------------------
 * Layout — 2-column (main + sidebar), collapses to 1 column at <=768px
 * ------------------------------------------------------------------- */

.pn-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: var(--pn-space-lg);
}

.pn-main {
    min-width: 0;
}

.pn-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--pn-space-md);
}

@media (max-width: 768px) {
    .pn-layout {
        grid-template-columns: 1fr;
    }
}

/* ---------------------------------------------------------------------
 * Post card
 * ------------------------------------------------------------------- */

.pn-card {
    background: var(--pn-surface);
    border: 1px solid var(--pn-border);
    border-radius: var(--pn-radius-lg);
    overflow: hidden;
    margin-bottom: var(--pn-space-lg);
}

.pn-card__media {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

.pn-card__body {
    padding: var(--pn-space-md);
}

.pn-post-title {
    font-family: var(--pn-font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 var(--pn-space-xs);
    color: var(--pn-text);
}

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

.pn-post-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--pn-space-sm);
    font-size: 0.875rem;
    color: var(--pn-text-muted);
    margin: 0 0 var(--pn-space-sm);
}

.pn-post-meta a {
    color: inherit;
    text-decoration: none;
}

.pn-excerpt {
    color: var(--pn-text);
    margin: 0 0 var(--pn-space-sm);
}

/* Vertical rhythm between un-named children of a card/widget body (tag rows, etc.) */
.pn-card__body > * + *,
.pn-widget > * + * {
    margin-top: var(--pn-space-sm);
}

/* ---------------------------------------------------------------------
 * Tags
 * ------------------------------------------------------------------- */

.pn-tag {
    display: inline-block;
    padding: var(--pn-space-xs) var(--pn-space-sm);
    margin: 0 var(--pn-space-xs) var(--pn-space-xs) 0;
    border-radius: var(--pn-radius);
    background: var(--pn-surface-variant);
    color: var(--pn-text-muted);
    font-size: 0.8125rem;
    text-decoration: none;
}

.pn-tag--category {
    background: var(--pn-primary);
    color: var(--pn-on-primary);
}

/* ---------------------------------------------------------------------
 * Buttons
 * ------------------------------------------------------------------- */

.pn-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--pn-space-xs);
    padding: var(--pn-space-sm) var(--pn-space-md);
    border-radius: var(--pn-radius);
    border: 1px solid transparent;
    background: var(--pn-surface-variant);
    color: var(--pn-text);
    font: inherit;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
}

.pn-btn--primary {
    background: var(--pn-primary);
    border-color: var(--pn-primary);
    color: var(--pn-on-primary);
}

.pn-btn--outline {
    background: transparent;
    border-color: var(--pn-border);
    color: var(--pn-primary);
}

.pn-btn--sm {
    padding: var(--pn-space-xs) var(--pn-space-sm);
    font-size: 0.875rem;
}

/* ---------------------------------------------------------------------
 * Pagination
 * ------------------------------------------------------------------- */

.pn-pagination {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--pn-space-xs);
    list-style: none;
    padding: 0;
    margin: var(--pn-space-lg) 0;
}

.pn-page {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border: 1px solid var(--pn-border);
    border-radius: var(--pn-radius);
    color: var(--pn-text);
    text-decoration: none;
}

.pn-page button {
    all: unset;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: 0 var(--pn-space-sm);
    cursor: pointer;
    color: inherit;
}

.pn-page button:disabled {
    cursor: not-allowed;
}

.pn-page--active {
    background: var(--pn-primary);
    border-color: var(--pn-primary);
    color: var(--pn-on-primary);
}

.pn-page--disabled {
    color: var(--pn-text-muted);
    pointer-events: none;
    opacity: 0.5;
}

/* ---------------------------------------------------------------------
 * Filter banner / empty / loading states
 * ------------------------------------------------------------------- */

.pn-filter-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--pn-space-md);
    padding: var(--pn-space-sm) var(--pn-space-md);
    margin-bottom: var(--pn-space-md);
    border-radius: var(--pn-radius);
    background: var(--pn-surface-variant);
    color: var(--pn-text);
}

.pn-empty,
.pn-loading {
    text-align: center;
    padding: var(--pn-space-xl) var(--pn-space-md);
    color: var(--pn-text-muted);
}

/* ---------------------------------------------------------------------
 * Masonry grid — collapses to a single column at <=768px
 * ------------------------------------------------------------------- */

.pn-masonry {
    column-count: 2;
    column-gap: var(--pn-space-lg);
}

.pn-masonry > * {
    break-inside: avoid;
    margin-bottom: var(--pn-space-lg);
}

@media (max-width: 768px) {
    .pn-masonry {
        column-count: 1;
    }
}

/* ---------------------------------------------------------------------
 * Sidebar widgets
 * ------------------------------------------------------------------- */

.pn-widget {
    background: var(--pn-surface);
    border: 1px solid var(--pn-border);
    border-radius: var(--pn-radius-lg);
    padding: var(--pn-space-md);
}

.pn-widget__title {
    font-family: var(--pn-font-heading);
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 var(--pn-space-sm);
    color: var(--pn-text);
}

.pn-widget--promo {
    border-color: var(--pn-primary);
}

.pn-widget ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pn-widget li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--pn-space-sm);
    padding: var(--pn-space-xs) 0;
    border-bottom: 1px solid var(--pn-border);
}

.pn-widget li:last-child {
    border-bottom: none;
}

.pn-searchbox {
    display: flex;
    gap: var(--pn-space-xs);
}

/* ---------------------------------------------------------------------
 * Comments
 * ------------------------------------------------------------------- */

.pn-comment {
    padding: var(--pn-space-sm) 0;
    border-bottom: 1px solid var(--pn-border);
}

.pn-comment:last-child {
    border-bottom: none;
}

.pn-comment--nested {
    margin-left: var(--pn-space-lg);
    padding-left: var(--pn-space-md);
    border-left: 2px solid var(--pn-border);
}

.pn-comment-form {
    margin-top: var(--pn-space-md);
}

.pn-comment-form label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--pn-space-xs);
}

.pn-required {
    color: #c0392b;
}

.pn-form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--pn-space-md);
}

.pn-alert {
    padding: var(--pn-space-sm) var(--pn-space-md);
    border-radius: var(--pn-radius);
    margin-bottom: var(--pn-space-md);
}

.pn-alert--success {
    background: #eafaf1;
    color: #1e7e42;
}

.pn-alert--danger {
    background: #fdeceb;
    color: #b3261e;
}

.pn-field {
    display: block;
    width: 100%;
    padding: var(--pn-space-sm);
    border: 1px solid var(--pn-border);
    border-radius: var(--pn-radius);
    background: var(--pn-surface);
    color: var(--pn-text);
    font: inherit;
}

/* ---------------------------------------------------------------------
 * Post content — long-form typography
 * ------------------------------------------------------------------- */

.pn-post-content {
    color: var(--pn-text);
    line-height: 1.7;
}

.pn-post-content h2,
.pn-post-content h3,
.pn-post-content h4 {
    font-family: var(--pn-font-heading);
    font-weight: 700;
    color: var(--pn-text);
    margin: var(--pn-space-lg) 0 var(--pn-space-sm);
}

.pn-post-content p {
    margin: 0 0 var(--pn-space-md);
}

.pn-post-content ul,
.pn-post-content ol {
    margin: 0 0 var(--pn-space-md);
    padding-left: var(--pn-space-lg);
}

.pn-post-content blockquote {
    margin: 0 0 var(--pn-space-md);
    padding: var(--pn-space-sm) var(--pn-space-md);
    border-left: 4px solid var(--pn-primary);
    background: var(--pn-surface-variant);
    color: var(--pn-text-muted);
}

.pn-post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--pn-radius);
}

.pn-post-content pre,
.pn-post-content code {
    font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
    background: var(--pn-surface-variant);
    border-radius: var(--pn-radius);
}

.pn-post-content code {
    padding: 0.125rem 0.375rem;
}

.pn-post-content pre {
    padding: var(--pn-space-md);
    overflow-x: auto;
    margin: 0 0 var(--pn-space-md);
}

.pn-post-content pre code {
    background: none;
    padding: 0;
}