/* ══════════════════════════════════════════════════════════════
   บทความ — หน้ารายการ /blog และหน้าอ่าน /blog/{slug}
   ใช้ prefix .blg- ทุก class เพื่อไม่ให้ทับกับ Bootstrap/สไตล์เดิมของเว็บ
   สีอ้างอิงชุดเดิมของแบรนด์ที่ใช้ในหน้าแรก (Views/Home/Index.cshtml)
   ══════════════════════════════════════════════════════════════ */
:root {
    --blg-navy: #020B6A;
    --blg-blue: #52A0ED;
    --blg-teal-1: #E8F6F6;
    --blg-teal-2: #DFF0F0;
    --blg-text: #333;
    --blg-muted: #8592a6;
    --blg-light: #aaa;
    --blg-border: #e5e9f0;
    --blg-shadow: 0 4px 10px rgba(3, 18, 26, .15);
}

.blg-page { padding: 24px 0 40px; }

.blg-crumb { font-size: .78rem; color: var(--blg-muted); display: flex; gap: 7px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.blg-crumb a { color: var(--blg-blue); text-decoration: none; }
.blg-crumb a:hover { text-decoration: underline; }

.blg-h1 { font-size: 1.7rem; font-weight: 700; color: var(--blg-navy); margin: 0 0 6px; }
.blg-sub { font-size: .9rem; color: var(--blg-muted); margin: 0 0 20px; max-width: 65ch; line-height: 1.7; }

/* ── แถบแท็ก ── */
.blg-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.blg-tag { font-size: .8rem; font-weight: 500; padding: 7px 15px; border-radius: 100px; background: #fff; border: 1px solid var(--blg-border); color: var(--blg-muted); white-space: nowrap; text-decoration: none; }
.blg-tag:hover { color: var(--blg-navy); border-color: var(--blg-blue); text-decoration: none; }
.blg-tag.on { background: var(--blg-navy); border-color: var(--blg-navy); color: #fff; font-weight: 600; }

/* ── บทความเด่น ── */
.blg-feature { display: grid; grid-template-columns: 1.25fr 1fr; background: #fff; border-radius: 8px; overflow: hidden; box-shadow: var(--blg-shadow); margin-bottom: 24px; }
.blg-feature .ph { min-height: 280px; background: linear-gradient(135deg, #cfe4f7, #a9cdef); }
.blg-feature .ph img { width: 100%; height: 100%; object-fit: cover; display: block; }
.blg-feature .bd { padding: 26px 28px; display: flex; flex-direction: column; justify-content: center; gap: 11px; }
.blg-feature h2 { font-size: 1.28rem; font-weight: 700; color: var(--blg-navy); margin: 0; line-height: 1.45; }
.blg-feature p { font-size: .88rem; color: var(--blg-muted); margin: 0; line-height: 1.7; }
@media (max-width: 860px) {
    .blg-feature { grid-template-columns: 1fr; }
    .blg-feature .ph { min-height: 200px; }
    .blg-feature .bd { padding: 18px 18px 22px; }
}

.blg-pin { display: inline-flex; align-items: center; gap: 6px; font-size: .7rem; font-weight: 700; color: #b3341f; background: #ffe9e6; padding: 4px 11px; border-radius: 100px; width: fit-content; }

/* ── ตารางการ์ด ── */
.blg-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 992px) { .blg-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .blg-grid { grid-template-columns: 1fr; } }

.blg-card { background: #fff; border-radius: 8px; overflow: hidden; box-shadow: var(--blg-shadow); display: flex; flex-direction: column; text-decoration: none; color: inherit; height: 100%; }
.blg-card:hover { color: inherit; text-decoration: none; transform: translateY(-2px); transition: transform .15s ease; }
.blg-card .ph { height: 172px; background: linear-gradient(135deg, #d7e8f5, #bcd8ee); position: relative; }
.blg-card .ph img { width: 100%; height: 100%; object-fit: cover; display: block; }
.blg-card .ext { position: absolute; top: 10px; right: 10px; background: rgba(2, 11, 106, .86); color: #fff; font-size: .64rem; font-weight: 600; padding: 3px 9px; border-radius: 100px; display: inline-flex; align-items: center; gap: 5px; }
.blg-card .bd { padding: 15px 16px 17px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.blg-card h3 { font-size: .96rem; font-weight: 600; color: var(--blg-text); margin: 0; line-height: 1.55; }
.blg-card p { font-size: .81rem; color: var(--blg-muted); margin: 0; line-height: 1.65; flex: 1; }

.blg-meta { display: flex; gap: 13px; flex-wrap: wrap; font-size: .76rem; color: var(--blg-light); align-items: center; }
.blg-meta i { margin-right: 4px; }

.blg-empty { text-align: center; padding: 60px 20px; color: var(--blg-muted); }

/* ── แบ่งหน้า ── */
.blg-pager { display: flex; gap: 10px; justify-content: center; margin-top: 28px; }
.blg-pager a { font-size: .85rem; font-weight: 600; padding: 10px 20px; border-radius: 8px; border: 1px solid var(--blg-border); background: #fff; color: var(--blg-navy); text-decoration: none; }
.blg-pager a:hover { border-color: var(--blg-blue); text-decoration: none; }

/* ══════════════════════════════════════════════════════════════
   หน้าอ่านบทความ
   ══════════════════════════════════════════════════════════════ */
.blg-hero { background: linear-gradient(135deg, var(--blg-teal-1), var(--blg-teal-2)); padding: 34px 0 30px; margin-bottom: 26px; }
.blg-hero h1 { font-size: 1.9rem; font-weight: 700; color: var(--blg-navy); margin: 10px 0 12px; line-height: 1.45; max-width: 24ch; }
.blg-hero .lead { font-size: .95rem; color: #4a5568; line-height: 1.8; max-width: 62ch; margin: 0 0 16px; }
@media (max-width: 620px) { .blg-hero h1 { font-size: 1.4rem; max-width: none; } }

.blg-byline { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; font-size: .82rem; color: #5b6a7d; }
.blg-avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--blg-navy); color: #fff; display: flex; align-items: center; justify-content: center; font-size: .72rem; font-weight: 700; flex-shrink: 0; }
.blg-dot { width: 3px; height: 3px; border-radius: 50%; background: var(--blg-light); }

.blg-cols { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 30px; align-items: start; }
@media (max-width: 940px) { .blg-cols { grid-template-columns: minmax(0, 1fr); gap: 22px; } }

.blg-cover { width: 100%; aspect-ratio: 16/9; border-radius: 10px; object-fit: cover; margin-bottom: 22px; display: block; }

/* ── ตัวบทความ ── */
.blg-body { font-size: 1.02rem; line-height: 1.95; color: #2d3748; max-width: 70ch; }
.blg-body > p { margin: 0 0 18px; }
.blg-body h2 { font-size: 1.3rem; font-weight: 700; color: var(--blg-navy); margin: 34px 0 13px; line-height: 1.5; scroll-margin-top: 90px; }
.blg-body h3 { font-size: 1.1rem; font-weight: 700; color: var(--blg-navy); margin: 26px 0 10px; line-height: 1.5; }
.blg-body ul, .blg-body ol { margin: 0 0 18px; padding-left: 24px; }
.blg-body li { margin-bottom: 9px; }
.blg-body a { color: var(--blg-blue); }
.blg-body img { max-width: 100%; height: auto; border-radius: 8px; display: block; margin: 0 0 8px; }
.blg-body iframe { max-width: 100%; width: 100%; aspect-ratio: 16/9; border: 0; border-radius: 8px; margin: 0 0 18px; }
.blg-body blockquote { margin: 0 0 20px; padding: 15px 20px; background: var(--blg-teal-1); border-left: 4px solid var(--blg-blue); border-radius: 0 8px 8px 0; font-size: .95rem; line-height: 1.8; color: #2c4a63; }
.blg-body table { border-collapse: collapse; width: 100%; margin: 0 0 18px; font-size: .9rem; }
.blg-body th, .blg-body td { border: 1px solid var(--blg-border); padding: 9px 12px; text-align: left; }
.blg-body th { background: var(--blg-teal-1); font-weight: 600; }
.blg-body hr { border: none; border-top: 1px solid var(--blg-border); margin: 26px 0; }

/* ตารางกว้าง ๆ ต้องเลื่อนในกล่องตัวเอง ไม่ใช่ดันทั้งหน้า */
.blg-body .table-scroll { overflow-x: auto; }

.blg-share { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; padding: 20px 0; border-top: 1px solid var(--blg-border); border-bottom: 1px solid var(--blg-border); margin: 28px 0; font-size: .84rem; color: var(--blg-muted); }
.blg-sh { width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--blg-border); background: #fff; display: inline-flex; align-items: center; justify-content: center; color: var(--blg-muted); font-size: .85rem; text-decoration: none; }
.blg-sh:hover { color: var(--blg-navy); border-color: var(--blg-blue); text-decoration: none; }

.blg-cta { background: linear-gradient(135deg, var(--blg-teal-1), var(--blg-teal-2)); border-radius: 10px; padding: 22px 24px; display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.blg-btn { background: var(--blg-navy); color: #fff; border: none; border-radius: 8px; padding: 10px 20px; font-size: .85rem; font-weight: 600; cursor: pointer; white-space: nowrap; display: inline-flex; align-items: center; gap: 7px; text-decoration: none; }
.blg-btn:hover { color: #fff; text-decoration: none; opacity: .92; }
.blg-btn.alt { background: var(--blg-blue); }
.blg-btn.ghost { background: #fff; color: var(--blg-navy); border: 1px solid var(--blg-border); }
.blg-btn.ghost:hover { color: var(--blg-navy); }

/* ── คอลัมน์ขวา ── */
.blg-side { display: flex; flex-direction: column; gap: 16px; }
.blg-side-card { background: #fff; border: 1px solid var(--blg-border); border-radius: 10px; padding: 16px 17px; }
.blg-side-card h4 { font-size: .88rem; font-weight: 700; color: var(--blg-navy); margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }

.blg-toc { display: flex; flex-direction: column; gap: 2px; }
.blg-toc a { font-size: .82rem; color: var(--blg-muted); text-decoration: none; padding: 7px 10px; border-radius: 7px; line-height: 1.55; border-left: 2px solid transparent; }
.blg-toc a:hover, .blg-toc a.on { color: var(--blg-navy); font-weight: 600; background: var(--blg-teal-1); border-left-color: var(--blg-blue); text-decoration: none; }

.blg-rel { border-top: 1px solid var(--blg-border); margin-top: 34px; padding-top: 26px; }
.blg-rel h3 { font-size: 1.08rem; color: var(--blg-navy); margin: 0 0 16px; }