* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Tahoma, "Segoe UI", sans-serif;
    background: #f4f5f7;
    color: #1f2430;
    direction: rtl;
}
a { color: inherit; text-decoration: none; }

.site-header { background: #fff; border-bottom: 1px solid #e2e4ea; position: sticky; top: 0; z-index: 10; }
.header-top { display: flex; align-items: center; justify-content: space-between; max-width: 1100px; margin: 0 auto; padding: 10px 16px; gap: 12px; flex-wrap: wrap; }
.brand { font-size: 20px; font-weight: bold; color: #c0392b; }

.nerkh-ticker { display: flex; gap: 16px; font-size: 13px; overflow-x: auto; }
.nerkh-item { display: flex; gap: 4px; align-items: baseline; white-space: nowrap; }
.nerkh-label { color: #777; }
.nerkh-value { font-weight: bold; color: #1f6f43; }

.category-nav { display: flex; gap: 4px; flex-wrap: wrap; max-width: 1100px; margin: 0 auto; padding: 0 16px 8px; }
.cat-link { padding: 6px 12px; border-radius: 20px; font-size: 13px; background: #f0f1f4; }
.cat-link:hover { background: #e2e4ea; }

.site-main { max-width: 1100px; margin: 20px auto; padding: 0 16px; }
.content-grid { display: grid; grid-template-columns: 1fr 280px; gap: 20px; }
@media (max-width: 800px) { .content-grid { grid-template-columns: 1fr; } }

.page-heading { font-size: 20px; margin: 0 0 16px; }

.article-card { display: flex; gap: 12px; background: #fff; border-radius: 10px; padding: 12px; margin-bottom: 12px; border: 1px solid #e8e9ee; }
.article-thumb img { width: 120px; height: 80px; object-fit: cover; border-radius: 8px; }
.article-title { font-size: 16px; margin: 0 0 6px; }
.article-title a:hover { color: #c0392b; }
.article-meta { font-size: 12px; color: #888; display: flex; gap: 10px; }
.article-tags { margin-top: 6px; display: flex; gap: 6px; flex-wrap: wrap; }
.tag-chip { font-size: 11px; background: #eef1fb; color: #3457c9; padding: 3px 8px; border-radius: 12px; }

.article-detail { background: #fff; border-radius: 10px; padding: 16px; border: 1px solid #e8e9ee; }
.article-iframe-wrap { position: relative; width: 100%; padding-top: 62%; margin-top: 14px; border-radius: 8px; overflow: hidden; border: 1px solid #e2e4ea; }
.article-iframe-wrap iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
@media (max-width: 800px) {
    /* در موبایل نسبت تصویری ثابت خیلی کوچیک می‌شه؛ به‌جاش ارتفاع را به viewport وصل می‌کنیم تا خواندن راحت‌تر باشه. */
    .article-iframe-wrap { padding-top: 0; height: 80vh; min-height: 420px; }
}
.iframe-fallback-note { font-size: 12px; color: #888; margin-top: 8px; }
.article-summary-box { margin-top: 14px; }
.btn-source-link { display: inline-block; margin-top: 10px; background: #c0392b; color: #fff; padding: 10px 18px; border-radius: 8px; }

.sidebar { display: flex; flex-direction: column; gap: 16px; }
.ad-slot-wrap { display: flex; flex-direction: column; gap: 10px; }
.ad-slot { text-align: center; }

.pager { display: flex; align-items: center; gap: 10px; justify-content: center; margin-top: 16px; font-size: 13px; }
.pager a { background: #fff; border: 1px solid #e2e4ea; padding: 6px 14px; border-radius: 6px; }

.site-footer { text-align: center; padding: 24px 16px; color: #888; font-size: 12px; border-top: 1px solid #e2e4ea; margin-top: 30px; }

.admin-page { max-width: 900px; margin: 30px auto; padding: 0 16px; }
.admin-page table { width: 100%; border-collapse: collapse; background: #fff; }
.admin-page th, .admin-page td { border: 1px solid #e2e4ea; padding: 8px; font-size: 13px; text-align: right; }
.admin-page form.inline { display: inline; }
.admin-page input, .admin-page select, .admin-page textarea { font-family: inherit; padding: 6px; border: 1px solid #ccc; border-radius: 6px; width: 100%; }
.admin-page .btn { background: #c0392b; color: #fff; border: none; padding: 8px 16px; border-radius: 6px; cursor: pointer; }
.admin-login-box { max-width: 320px; margin: 80px auto; background: #fff; padding: 24px; border-radius: 10px; border: 1px solid #e2e4ea; }