/* ═══════════════════════════════════════════════════
   blog.css — Tech Blog page styles
   ═══════════════════════════════════════════════════ */

/* ── BLOG FILTER ── */
.blog-filter { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 48px; }
.bf-tab { padding: 9px 20px; border-radius: 100px; font-size: 11.5px; font-weight: 500; letter-spacing: 0.07em; border: 1px solid var(--glass-border); background: var(--glass-bg); color: var(--text-secondary); cursor: pointer; transition: all .25s cubic-bezier(.34,1.4,.64,1); backdrop-filter: blur(12px); box-shadow: inset 0 1px 0 rgba(255,255,255,0.1), 3px 4px 10px var(--neo-dark); }
.bf-tab:hover, .bf-tab.active { color: var(--accent); border-color: rgba(var(--accent-rgb),0.38); background: var(--accent-soft); transform: translateY(-2px); box-shadow: inset 0 1px 0 rgba(255,255,255,0.18), 0 0 16px rgba(var(--accent-rgb),0.12); }

/* ── BLOG GRID ── */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px,1fr)); gap: 24px; }

/* ── BLOG CARD ── */
.blog-card { padding: 0; overflow: hidden; cursor: pointer; }
.blog-card.hidden { display: none; }
.blog-card-header { padding: 28px 30px 20px; position: relative; }
.blog-accent-bar { position: absolute; top: 0; left: 0; right: 0; height: 3px; border-radius: 24px 24px 0 0; }
.blog-accent-bar.blue   { background: linear-gradient(90deg, rgba(110,175,255,0.8), rgba(110,175,255,0.3)); }
.blog-accent-bar.purple { background: linear-gradient(90deg, rgba(168,110,255,0.8), rgba(168,110,255,0.3)); }
.blog-accent-bar.green  { background: linear-gradient(90deg, rgba(80,200,120,0.8),  rgba(80,200,120,0.3)); }
.blog-accent-bar.orange { background: linear-gradient(90deg, rgba(255,160,80,0.8),  rgba(255,160,80,0.3)); }
.blog-accent-bar.pink   { background: linear-gradient(90deg, rgba(255,100,160,0.8), rgba(255,100,160,0.3)); }
.blog-accent-bar.teal   { background: linear-gradient(90deg, rgba(60,200,200,0.8),  rgba(60,200,200,0.3)); }

.blog-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.blog-cat { font-size: 9.5px; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; padding: 3px 10px; border-radius: 6px; background: var(--accent-soft); color: var(--accent); border: 1px solid rgba(var(--accent-rgb),0.2); }
.blog-date { font-size: 10px; font-family: 'JetBrains Mono',monospace; color: var(--text-muted); letter-spacing: 0.08em; }
.blog-read { font-size: 10px; color: var(--text-muted); }
.blog-title { font-size: 18px; font-weight: 700; color: var(--text-primary); letter-spacing: -0.02em; line-height: 1.3; margin-bottom: 8px; }
.blog-subtitle { font-size: 11.5px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px; }
.blog-excerpt { font-size: 13px; color: var(--text-secondary); line-height: 1.75; font-weight: 300; }

.blog-card-body { padding: 0 30px 24px; }
.blog-highlights { list-style: none; display: flex; flex-direction: column; gap: 7px; margin-bottom: 20px; margin-top: 16px; }
.blog-highlights li { font-size: 12px; color: var(--text-secondary); line-height: 1.65; padding-left: 16px; position: relative; font-weight: 300; }
.blog-highlights li::before { content: ''; position: absolute; left: 0; top: 8px; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); opacity: 0.7; }
.blog-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }
.btag { padding: 4px 11px; border-radius: 100px; font-size: 10px; font-weight: 500; letter-spacing: 0.06em; border: 1px solid var(--glass-border); background: var(--glass-bg2); color: var(--text-secondary); box-shadow: inset 1px 1px 3px rgba(0,0,0,0.2); }
.blog-card:hover .btag { color: var(--accent); border-color: rgba(var(--accent-rgb),0.25); }

.blog-card-footer { padding: 16px 30px 24px; border-top: 1px solid var(--glass-border); display: flex; align-items: center; justify-content: space-between; }
.blog-read-btn { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); display: flex; align-items: center; gap: 6px; opacity: 0.7; transition: opacity .2s, gap .25s; }
.blog-read-btn svg { width: 13px; height: 13px; stroke: var(--accent); fill: none; stroke-width: 2.5; transition: transform .25s cubic-bezier(.34,1.56,.64,1); }
.blog-card:hover .blog-read-btn { opacity: 1; }
.blog-card:hover .blog-read-btn svg { transform: translate(4px,-2px); }

/* ── BLOG MODAL ── */
.blog-modal-overlay { position: fixed; inset: 0; z-index: 2000; background: rgba(0,0,0,0.7); backdrop-filter: blur(8px); display: flex; align-items: center; justify-content: center; padding: 24px; opacity: 0; visibility: hidden; transition: opacity .35s, visibility .35s; }
.blog-modal-overlay.open { opacity: 1; visibility: visible; }
.blog-modal { width: 100%; max-width: 680px; max-height: 85vh; overflow-y: auto; border-radius: 28px; background: rgba(10,14,28,0.95); border: 1px solid var(--glass-border); box-shadow: 0 40px 120px rgba(0,0,0,0.8), inset 0 1px 0 rgba(255,255,255,0.12); padding: 40px 48px; position: relative; }
[data-theme="light"] .blog-modal { background: rgba(245,247,255,0.97); }
.blog-modal-close { position: absolute; top: 20px; right: 20px; width: 36px; height: 36px; border-radius: 50%; background: var(--glass-bg2); border: 1px solid var(--glass-border); display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text-secondary); font-size: 18px; line-height: 1; transition: all .2s; }
.blog-modal-close:hover { color: var(--text-primary); background: var(--glass-bg); }
.blog-modal-cat { font-size: 9.5px; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }
.blog-modal-title { font-size: clamp(22px,3vw,34px); font-weight: 700; letter-spacing: -0.03em; color: var(--text-primary); margin-bottom: 8px; line-height: 1.2; }
.blog-modal-sub { font-size: 13px; color: var(--accent); font-weight: 500; letter-spacing: 0.06em; margin-bottom: 20px; }
.blog-modal-meta { display: flex; gap: 16px; margin-bottom: 28px; }
.blog-modal-meta span { font-size: 11px; color: var(--text-muted); font-family: 'JetBrains Mono',monospace; }
.blog-modal-excerpt { font-size: 15px; color: var(--text-secondary); line-height: 1.85; font-weight: 300; margin-bottom: 28px; }
.blog-modal-section { font-size: 11px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.blog-modal-section::after { content: ''; flex: 1; height: 1px; background: rgba(var(--accent-rgb),0.2); }
.blog-modal-list { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
.blog-modal-list li { font-size: 13.5px; color: var(--text-secondary); line-height: 1.75; padding-left: 20px; position: relative; }
.blog-modal-list li::before { content: ''; position: absolute; left: 0; top: 9px; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); opacity: 0.6; }
.blog-modal-tags { display: flex; flex-wrap: wrap; gap: 7px; }