:root {
    --bg-color: #05070a;
    --card-bg: rgba(255, 255, 255, 0.03);
    --accent-color: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.5);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-dim: #64748b;
    --glass-border: rgba(255, 255, 255, 0.08);
    --container-max-width: 720px;
    --nav-height: 54px;
}

* {
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.75;
    word-break: keep-all;
    /* 모바일 스크롤 부드럽게 */
    -webkit-overflow-scrolling: touch;
}

/* Typography Scale */
h1, h2, h3, h4 {
    color: var(--text-primary);
    font-weight: 800;
    line-height: 1.3;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(1.7rem, 5vw, 3.2rem); margin-top: 0; }
h2 { font-size: clamp(1.2rem, 4vw, 2.2rem); border-bottom: 1px solid var(--glass-border); padding-bottom: 0.5rem; }
h3 { font-size: clamp(1.1rem, 3vw, 1.6rem); }

p {
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

/* Layout */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 16px;
}

header.blog-header {
    padding: 40px 0 32px;
    text-align: center;
}

.blog-title {
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    letter-spacing: -0.02em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 0.5rem;
    font-weight: 400;
    line-height: 1.5;
    padding: 0 8px;
}

/* ── Post Cards (Index Page) ── */
.post-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.post-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    padding: 22px 20px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
    /* 모바일 탭 하이라이트 제거 */
    -webkit-tap-highlight-color: transparent;
}

.post-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.post-card:hover,
.post-card:active {
    transform: translateY(-2px);
    border-color: var(--accent-color);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3), 0 0 16px rgba(59, 130, 246, 0.1);
}

.post-card:hover::before { opacity: 1; }

.post-card .meta {
    font-size: 0.8rem;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 8px;
    display: block;
}

.post-card .title {
    font-size: 1.15rem;
    line-height: 1.45;
    margin: 0 0 10px;
    transition: color 0.3s;
    word-break: keep-all;
}

.post-card .summary {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.65;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card .read-more {
    font-weight: 700;
    font-size: 0.88rem;
    color: var(--accent-color);
    display: flex;
    align-items: center;
    gap: 6px;
}

.post-card .read-more::after {
    content: '→';
    transition: transform 0.3s;
}

.post-card:hover .read-more::after {
    transform: translateX(4px);
}

/* ── Post Detail Content ── */
article.post-detail {
    padding-bottom: 60px;
}

.post-detail-header {
    margin-bottom: 32px;
}

.post-detail-header .date {
    color: var(--accent-color);
    font-weight: 700;
    margin-bottom: 10px;
    display: block;
    font-size: 0.85rem;
}

.summary-box {
    background: rgba(59, 130, 246, 0.08);
    border-left: 4px solid var(--accent-color);
    padding: 20px;
    border-radius: 0 14px 14px 0;
    margin: 32px 0;
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.7;
}

.content-body {
    color: #e2e8f0;
}

.content-body img {
    max-width: 100%;
    border-radius: 12px;
    margin: 1.5rem 0;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

.content-body blockquote {
    margin: 1.5rem 0;
    padding: 1.2rem 1.5rem;
    background: rgba(255,255,255,0.03);
    border-radius: 10px;
    font-style: italic;
    border-left: 2px solid var(--text-dim);
}

/* ── Back Link ── */
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    margin: 28px 0;
    padding: 10px 0;
    transition: color 0.3s;
    /* 모바일 터치 영역 확보 */
    min-height: 44px;
}

.back-btn:hover { color: var(--accent-color); }

/* ── Footer ── */
footer {
    border-top: 1px solid var(--glass-border);
    padding: 40px 0;
    text-align: center;
    color: var(--text-dim);
    font-size: 0.85rem;
}

/* ── Animations ── */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.post-card { animation: fadeIn 0.5s ease backwards; }
.post-card:nth-child(1) { animation-delay: 0.05s; }
.post-card:nth-child(2) { animation-delay: 0.1s; }
.post-card:nth-child(3) { animation-delay: 0.15s; }

/* ── Prime Reporter Card ── */
.prime-reporter-card {
    background: #111418;
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    padding: 24px 20px;
    margin: 32px 0;
    color: var(--text-primary);
    line-height: 1.6;
    box-shadow: 0 10px 32px rgba(0,0,0,0.4);
}

.reporter-header { font-weight: 800; font-size: 1.1rem; margin-bottom: 6px; color: #ffffff; }
.reporter-time   { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 20px; display: block; }
.reporter-item   { margin-bottom: 18px; font-size: 1rem; }
.reporter-item b { color: #ffffff; }
.reporter-title  { font-size: 1.25rem; font-weight: 800; margin: 16px 0; color: #ffffff; border: none; }

.summary-list { padding-left: 18px; margin-top: 10px; color: #cbd5e1; }
.summary-list li { margin-bottom: 8px; font-size: 0.95rem; }

/* ── 인사이트 박스 ── */
.insight-box {
    border-radius: 10px;
    padding: 16px 18px;
    margin-top: 14px;
    border-left: 3px solid #10b981;
    background: rgba(255,255,255,0.03);
}
.insight-title {
    font-weight: 800;
    font-size: 0.9rem;
    color: #ffffff;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
    letter-spacing: -0.2px;
}
.insight-content {
    color: #a8b5cc;
    font-size: 0.88rem;
    line-height: 1.7;
    margin: 0;
}

.insight-box.scenario { border-left-color: #f5c842; background: rgba(245,200,66,0.06); }
.insight-box.scenario .insight-title { color: #f5c842; }
.insight-box.supply   { border-left-color: #4fa3e0; background: rgba(79,163,224,0.06); }
.insight-box.supply .insight-title { color: #4fa3e0; }
.insight-box.risk     { border-left-color: #f06055; background: rgba(240,96,85,0.06); }
.insight-box.risk .insight-title { color: #f06055; }
.insight-box.timeline { border-left-color: #bd93f9; background: rgba(189,147,249,0.06); }
.insight-box.timeline .insight-title { color: #bd93f9; }

.reporter-footer {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-dim);
}

.source-btn {
    color: #10b981;
    text-decoration: none;
    font-weight: 700;
    transition: opacity 0.3s;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}
.source-btn:hover { opacity: 0.8; }

.card-image {
    width: 100%;
    max-height: 260px;
    object-fit: cover;
    border-radius: 12px;
    margin: 14px 0 20px;
    display: block;
    box-shadow: 0 6px 24px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.06);
    background: #1a1b22;
}

/* ── Empty State ── */
.empty-state {
    text-align: center;
    padding: 60px 16px;
    color: var(--text-secondary);
}
.empty-icon { font-size: 2.5rem; margin-bottom: 16px; }
.empty-state p { font-size: 1.1rem; color: var(--text-primary); margin-bottom: 6px; }
.empty-state span { font-size: 0.9rem; color: var(--text-dim); }

/* ── Pagination ── */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    padding: 32px 0 10px;
    flex-wrap: wrap;
}
.page-btn {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    padding: 10px 14px;
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    transition: all 0.2s;
    background: rgba(255,255,255,0.03);
    -webkit-tap-highlight-color: transparent;
}
.page-btn:hover, .page-btn:active {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background: rgba(59,130,246,0.08);
}
.page-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #fff;
    font-weight: 700;
    pointer-events: none;
}
.page-btn.page-edge {
    color: var(--text-dim);
    font-size: 0.8rem;
    padding: 10px;
}
.page-meta {
    text-align: center;
    color: var(--text-dim);
    font-size: 0.8rem;
    padding-bottom: 32px;
}

/* ════════════════════════════════════
   모바일 최적화 (480px 이하)
════════════════════════════════════ */
@media (max-width: 480px) {
    .container { padding: 0 14px; }

    header.blog-header { padding: 28px 0 22px; }

    .blog-title { font-size: 1.5rem; }
    .subtitle { font-size: 0.88rem; }

    .post-list { gap: 12px; }

    .post-card {
        padding: 18px 16px;
        border-radius: 14px;
    }

    .post-card .title { font-size: 1.05rem; }
    .post-card .summary { font-size: 0.88rem; -webkit-line-clamp: 2; }
    .post-card .meta { font-size: 0.75rem; }
    .post-card .read-more { font-size: 0.82rem; }

    .summary-box { padding: 16px; font-size: 0.92rem; }
    .prime-reporter-card { padding: 18px 14px; }

    .pagination { gap: 4px; padding: 24px 0 8px; }
    .page-btn { padding: 8px 10px; font-size: 0.8rem; min-width: 40px; min-height: 40px; }

    footer { padding: 28px 0; }
}

/* ════════════════════════════════════
   태블릿 (641px ~ 768px)
════════════════════════════════════ */
@media (min-width: 641px) and (max-width: 768px) {
    .container { padding: 0 20px; }
    header.blog-header { padding: 50px 0 36px; }
    .post-card { padding: 26px 22px; }
    .post-card .title { font-size: 1.25rem; }
}

/* ════════════════════════════════════
   데스크톱 (769px 이상) - 기존 유지
════════════════════════════════════ */
@media (min-width: 769px) {
    .container { padding: 0 24px; }
    header.blog-header { padding: 80px 0 60px; }
    .post-card { padding: 32px; border-radius: 24px; }
    .post-list { gap: 28px; }
    .post-card .title { font-size: 1.6rem; }
    .post-card .summary { font-size: 1rem; -webkit-line-clamp: 3; }
    .post-card .meta { font-size: 0.875rem; }
    .subtitle { font-size: 1.15rem; }
    p { font-size: 1.125rem; }
}

/* ════════════════════════════════════
   날짜 / 시간대 그룹핑 UI
════════════════════════════════════ */
.post-feed {
    display: flex;
    flex-direction: column;
}

/* ─ 날짜 섹션 ─ */
.day-section {
    margin-bottom: 36px;
}

.day-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(245, 166, 35, 0.3);
}

.day-label {
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: -0.3px;
    color: #f5a623;
    text-shadow: 0 0 12px rgba(245, 166, 35, 0.35);
}

/* ─ 시간대 박스 ─ */
.slot-box {
    margin-bottom: 10px;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    overflow: hidden;
    background: rgba(255,255,255,0.015);
}

.slot-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 11px 18px;
    border-bottom: 1px solid var(--glass-border);
}

.slot-label {
    font-size: 0.88rem;
    font-weight: 700;
}

.slot-count {
    font-size: 0.76rem;
    font-weight: 600;
    color: var(--text-dim);
    background: rgba(255,255,255,0.05);
    padding: 2px 8px;
    border-radius: 10px;
    border: 1px solid var(--glass-border);
}

/* 시간대별 색상 테마 */
.slot-morning  { border-color: rgba(245,166,35,0.22); }
.slot-morning .slot-header  { background: rgba(245,166,35,0.06); }
.slot-morning .slot-label   { color: #f5a623; }

.slot-afternoon { border-color: rgba(59,130,246,0.22); }
.slot-afternoon .slot-header { background: rgba(59,130,246,0.06); }
.slot-afternoon .slot-label  { color: #60a5fa; }

.slot-evening  { border-color: rgba(167,139,250,0.22); }
.slot-evening .slot-header  { background: rgba(167,139,250,0.06); }
.slot-evening .slot-label   { color: #a78bfa; }

/* ─ 박스 안 포스트 카드 ─ */
.slot-posts {
    display: flex;
    flex-direction: column;
}

.slot-posts .post-card-wrap {
    border-bottom: 1px solid rgba(255,255,255,0.04);
    position: relative;
}
.slot-posts .post-card-wrap:last-child { border-bottom: none; }

/* 슬롯 안 카드는 테두리/배경 초기화 */
.slot-posts .post-card {
    border: none;
    border-radius: 0;
    background: transparent;
    padding: 16px 18px;
    animation: none;
    transition: background 0.2s;
}
.slot-posts .post-card:hover,
.slot-posts .post-card:active {
    background: rgba(255,255,255,0.035);
    transform: none;
    box-shadow: none;
    border-color: transparent;
}

.slot-posts .post-card .title   { font-size: 1rem;   margin: 4px 0 6px; line-height: 1.45; }
.slot-posts .post-card .summary { font-size: 0.85rem; -webkit-line-clamp: 2; margin-bottom: 8px; }
.slot-posts .post-card .meta    { font-size: 0.75rem; margin-bottom: 4px; }
.slot-posts .post-card .read-more { font-size: 0.82rem; }

/* 슬롯 안 삭제 버튼 위치 조정 */
.slot-posts .delete-btn {
    top: 10px;
    right: 14px;
}

/* 모바일 */
@media (max-width: 480px) {
    .day-section  { margin-bottom: 22px; }
    .day-label    { font-size: 0.88rem; }
    .slot-header  { padding: 9px 14px; }
    .slot-label   { font-size: 0.8rem; }
    .slot-posts .post-card       { padding: 13px 14px; }
    .slot-posts .post-card .title { font-size: 0.92rem; }
}