/* PhotoContestWorld — Shared Responsive Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; color: #0A0A0A; background: #FAFAF7; -webkit-font-smoothing: antialiased; line-height: 1.55; }
a { color: inherit; text-decoration: none; }
a:hover { color: #0A0A0A; }
button, input, select, textarea { font-family: inherit; }
input::placeholder { color: #999; }
img { max-width: 100%; display: block; }

/* Tokens */
:root {
  --ink: #0A0A0A; --fg-1: #0A0A0A; --fg-2: #4A4A4A; --fg-3: #7A7A7A; --fg-4: #999;
  --bg-1: #FAFAF7; --bg-2: #F3F2EE; --bg-3: #E8E7E3;
  --border: #E6E6E6; --border-strong: #D4D4D4;
  --flame: #FF4D2E; --flame-soft: #FFE9E2; --flame-deep: #C7261A;
  --success: #0E8A4F; --success-bg: #E8F5EE;
  --warning: #C77700; --warning-bg: #FFF4E6;
  --danger: #C7261A; --danger-bg: #FFE9E2;
  --info: #1F6FEB; --info-bg: #E8F0FE;
  --shadow-1: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-2: 0 4px 12px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
  --shadow-3: 0 12px 40px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --radius-sm: 6px; --radius: 10px; --radius-lg: 14px; --radius-xl: 20px; --radius-pill: 999px;
  --max-w: 1200px; --nav-h: 64px;
}

/* NAV */
.nav { height: var(--nav-h); border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 28px; padding: 0 40px; background: rgba(255,255,255,0.85); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 50; }
.nav-logo { display: flex; align-items: center; gap: 10px; cursor: pointer; text-decoration: none; }
.nav-logo-mark { width: 30px; height: 30px; background: var(--ink); border-radius: 8px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.nav-logo-text { font-size: 17px; font-weight: 600; letter-spacing: -0.02em; }
.nav-links { display: flex; gap: 20px; font-size: 14px; }
.nav-links a { color: var(--fg-2); font-weight: 500; cursor: pointer; transition: color 120ms; }
.nav-links a:hover { color: var(--fg-1); }
.nav-links a.active { color: var(--flame); }
.nav-spacer { flex: 1; }
.nav-btn { background: var(--ink); color: white; border: none; padding: 9px 16px; border-radius: var(--radius); font-size: 14px; font-weight: 500; cursor: pointer; }
.nav-btn:hover { background: #222; }
.nav-btn-ghost { background: transparent; border: none; color: var(--fg-2); font-size: 14px; font-weight: 500; cursor: pointer; padding: 8px 12px; }
.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 8px; color: var(--fg-1); }

/* CONTAINER */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 40px; }
.container-wide { max-width: 100%; margin: 0 auto; padding: 0 40px; box-sizing: border-box; }

/* SECTION */
.section { padding: 48px 0; }
.section-label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em; font-weight: 500; color: var(--fg-3); margin-bottom: 8px; }
.section-title { font-size: 28px; font-weight: 600; letter-spacing: -0.02em; }

/* HERO */
.hero { padding: 80px 0 48px; text-align: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: var(--flame-soft); color: var(--flame-deep); padding: 6px 14px; border-radius: var(--radius-pill); font-size: 13px; font-weight: 500; margin-bottom: 24px; }
.hero-title { font-size: clamp(40px, 5.5vw, 68px); line-height: 0.98; letter-spacing: -0.035em; font-weight: 600; margin: 0 0 20px; max-width: 860px; margin-inline: auto; }
.hero-title .accent { color: var(--flame); }
.hero-sub { font-size: 18px; color: var(--fg-2); line-height: 1.5; max-width: 560px; margin: 0 auto 36px; }

/* SEARCH BAR */
.search-bar { display: flex; align-items: center; gap: 8px; background: white; border: 1px solid var(--border-strong); border-radius: var(--radius-lg); padding: 8px 8px 8px 18px; max-width: 620px; margin: 0 auto 16px; box-shadow: var(--shadow-2); }
.search-bar input { flex: 1; border: none; outline: none; font-size: 15px; background: transparent; color: var(--fg-1); padding: 10px 0; min-width: 0; }
.search-bar .search-btn { background: var(--flame); color: white; border: none; padding: 10px 18px; border-radius: var(--radius); font-size: 14px; font-weight: 600; cursor: pointer; display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.search-bar .search-btn:hover { background: #E8431F; }

/* TRENDING */
.trending { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; font-size: 13px; color: var(--fg-3); }
.trending a { color: var(--fg-2); cursor: pointer; text-decoration: underline; text-decoration-color: var(--border-strong); text-underline-offset: 3px; }

/* STAT GRID */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-card { background: var(--bg-2); border-radius: var(--radius-lg); padding: 24px; text-align: center; }
.stat-num { font-size: 32px; font-weight: 600; letter-spacing: -0.02em; color: var(--fg-1); }
.stat-num.accent { color: var(--flame); }
.stat-label { font-size: 13px; color: var(--fg-3); margin-top: 4px; }

/* CONTEST CARD */
.contest-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 1920px) {
  .contest-card .card-thumb { width: 25%; aspect-ratio: 16/9; }
}
@media (min-width: 1366px) and (max-width: 1919px) {
  .contest-card .card-thumb { width: 25%; aspect-ratio: 1366/768; }
}
@media (min-width: 768px) and (max-width: 1365px) {
  .contest-card .card-thumb { width: 30%; aspect-ratio: 768/1024; }
}
@media (max-width: 767px) {
  .contest-card { flex-direction: column !important; }
  .contest-card .card-thumb { width: 100% !important; min-width: 0 !important; aspect-ratio: 360/200; }
}
.contest-card { background: white; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; cursor: pointer; display: flex; flex-direction: column; gap: 12px; transition: border-color 200ms, box-shadow 200ms; }
.contest-card:hover { border-color: var(--ink); box-shadow: var(--shadow-2); }
.contest-card-header { display: flex; align-items: flex-start; gap: 12px; }
.contest-avatar { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; color: white; font-weight: 700; font-size: 16px; flex-shrink: 0; }
.contest-card-title { font-size: 15px; font-weight: 600; letter-spacing: -0.01em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.contest-card-org { font-size: 13px; color: var(--fg-3); }
.contest-meta { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.contest-prize { font-size: 14px; color: var(--flame); font-weight: 600; }
.contest-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: auto; }
.contest-tag { font-size: 11px; padding: 3px 8px; background: var(--bg-2); color: var(--fg-3); border-radius: 6px; font-weight: 500; }

/* STATUS BADGE */
.badge { padding: 3px 9px; border-radius: var(--radius-pill); font-size: 11px; font-weight: 600; display: inline-block; }
.badge-open { background: var(--success-bg); color: var(--success); }
.badge-closing { background: var(--warning-bg); color: var(--warning); }
.badge-upcoming { background: var(--info-bg); color: var(--info); }
.badge-closed { background: var(--bg-2); color: var(--fg-3); }
.badge-pending { background: var(--warning-bg); color: var(--warning); }
.badge-duplicate { background: var(--danger-bg); color: var(--danger); }
.badge-published { background: var(--success-bg); color: var(--success); }
.badge-rejected { background: var(--bg-2); color: var(--fg-3); }

/* CATEGORY CARD */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.cat-card { display: flex; align-items: center; gap: 12px; padding: 16px; border: 1px solid var(--border); border-radius: 12px; cursor: pointer; background: white; transition: border-color 200ms, transform 200ms; }
.cat-card:hover { border-color: var(--ink); transform: translateY(-2px); }
.cat-icon { width: 36px; height: 36px; border-radius: 9px; background: var(--bg-2); display: flex; align-items: center; justify-content: center; color: var(--fg-1); flex-shrink: 0; }
.cat-name { font-size: 14px; font-weight: 600; }
.cat-count { font-size: 12px; color: var(--fg-3); }

/* CLOSING SOON LIST */
.closing-row { display: flex; align-items: center; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border); cursor: pointer; }
.closing-row:last-child { border-bottom: none; }

/* NEWSLETTER ASIDE */
.newsletter { background: var(--ink); color: white; border-radius: 16px; padding: 28px; }
.newsletter h3 { font-size: 20px; font-weight: 600; letter-spacing: -0.01em; margin: 16px 0 8px; color: white; }
.newsletter p { font-size: 14px; color: rgba(255,255,255,0.7); line-height: 1.5; margin: 0 0 20px; }
.newsletter-form { display: flex; gap: 6px; }
.newsletter-form input { flex: 1; padding: 10px 12px; border: none; border-radius: 8px; background: rgba(255,255,255,0.1); color: white; font-size: 13px; outline: none; min-width: 0; }
.newsletter-form button { background: var(--flame); color: white; border: none; padding: 10px 14px; border-radius: 8px; font-size: 13px; font-weight: 600; cursor: pointer; white-space: nowrap; }

/* CLOSING + NEWSLETTER GRID */
.closing-section { display: grid; grid-template-columns: 1fr 340px; gap: 48px; }

/* BROWSE LAYOUT */
.browse-layout { display: grid; grid-template-columns: 240px 1fr; gap: 40px; padding-top: 32px; }
.browse-sidebar { position: sticky; top: 80px; align-self: flex-start; }
.filter-group { margin-bottom: 24px; }
.filter-label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em; font-weight: 500; color: var(--fg-3); margin-bottom: 12px; }
.filter-btn { display: flex; align-items: center; gap: 8px; padding: 7px 10px; border-radius: 8px; border: none; font-size: 13px; cursor: pointer; text-align: left; width: 100%; background: transparent; color: var(--fg-2); font-weight: 500; transition: background 120ms; }
.filter-btn:hover { background: var(--bg-2); }
.filter-btn.active { background: var(--bg-3); color: var(--fg-1); font-weight: 600; }
.filter-dot { width: 8px; height: 8px; border-radius: 4px; flex-shrink: 0; }
.sort-bar { display: flex; align-items: center; gap: 8px; padding: 10px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); margin-bottom: 24px; flex-wrap: wrap; }
.sort-label { font-size: 13px; color: var(--fg-3); margin-right: 4px; }
.sort-btn { padding: 6px 12px; border-radius: 8px; border: none; font-size: 13px; font-weight: 500; cursor: pointer; background: transparent; color: var(--fg-2); }
.sort-btn.active { background: var(--bg-3); color: var(--fg-1); }

/* DETAIL */
.detail-back { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--fg-3); cursor: pointer; margin-bottom: 24px; }
.detail-back:hover { color: var(--fg-1); }
.detail-hero { display: flex; flex-direction: column; align-items: center; margin-bottom: 32px; }
.detail-avatar { width: 80px; height: 80px; border-radius: 18px; display: flex; align-items: center; justify-content: center; color: white; font-weight: 700; font-size: 28px; flex-shrink: 0; }
.detail-title { font-size: 32px; font-weight: 600; letter-spacing: -0.025em; }
.detail-action-panel { background: var(--bg-2); border-radius: var(--radius-lg); padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.detail-cta { background: var(--flame); color: white; padding: 12px 16px; border-radius: var(--radius); font-size: 14px; font-weight: 600; display: flex; align-items: center; justify-content: center; gap: 6px; cursor: pointer; border: none; text-align: center; }
.detail-cta:hover { background: #E8431F; }
.detail-btn-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.detail-btn { background: white; border: 1px solid var(--border-strong); padding: 10px 12px; border-radius: var(--radius); font-size: 13px; font-weight: 500; display: flex; align-items: center; justify-content: center; gap: 6px; cursor: pointer; color: var(--fg-1); }
.detail-btn:hover { border-color: var(--ink); }
.detail-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 40px; }
.detail-stat { background: var(--bg-2); border-radius: var(--radius); padding: 16px; }
.detail-stat-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--fg-3); margin-bottom: 6px; }
.detail-stat-val { font-size: 18px; font-weight: 600; }
.detail-body { display: grid; grid-template-columns: 1fr 300px; gap: 48px; }
.detail-cats { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.detail-cat { padding: 6px 14px; background: var(--bg-2); border-radius: var(--radius-pill); font-size: 13px; font-weight: 500; color: var(--fg-2); }
.detail-check { display: flex; gap: 10px; font-size: 15px; color: var(--fg-2); line-height: 1.5; align-items: flex-start; margin-bottom: 12px; }
.detail-check svg { flex-shrink: 0; margin-top: 2px; }
.detail-sidebar-block { padding-bottom: 18px; margin-bottom: 18px; border-bottom: 1px solid var(--border); }
.detail-sidebar-label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em; font-weight: 500; color: var(--fg-3); margin-bottom: 8px; }
.detail-sidebar-row { display: flex; justify-content: space-between; font-size: 14px; color: var(--fg-2); margin-bottom: 6px; }

/* CALENDAR */
.calendar-nav { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.calendar-nav-btn { background: white; border: 1px solid var(--border-strong); padding: 8px 14px; border-radius: 8px; font-size: 13px; font-weight: 500; cursor: pointer; color: var(--fg-1); }
.calendar-nav-btn:hover { border-color: var(--ink); }
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.calendar-head { background: var(--bg-2); padding: 10px; text-align: center; font-size: 12px; font-weight: 600; color: var(--fg-3); }
.calendar-day { background: white; padding: 8px; min-height: 90px; }
.calendar-day.empty { background: var(--bg-2); }
.calendar-day.today { background: #FFF8F6; }
.calendar-day-num { font-size: 13px; font-weight: 500; margin-bottom: 4px; }
.calendar-event { font-size: 10px; padding: 2px 6px; border-radius: 4px; margin-bottom: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: 500; cursor: pointer; }

/* DASHBOARD EMPTY */
.empty-state { text-align: center; padding: 80px 20px; color: var(--fg-3); }
.empty-state p { margin: 0 0 8px; }

/* ADMIN */
.admin-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; flex-wrap: wrap; gap: 16px; }
.admin-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.admin-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 24px; }
.admin-stat { background: white; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.admin-stat-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--fg-3); margin-bottom: 4px; }
.admin-stat-val { font-size: 28px; font-weight: 600; }
.admin-filter-bar { display: flex; align-items: center; gap: 8px; padding: 10px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); margin-bottom: 20px; flex-wrap: wrap; }
.admin-search { display: flex; align-items: center; gap: 6px; background: var(--bg-2); border-radius: 8px; padding: 6px 10px; }
.admin-search input { border: none; outline: none; font-size: 13px; background: transparent; color: var(--fg-1); width: 140px; }
.bulk-bar { display: flex; align-items: center; gap: 12px; padding: 10px 16px; background: var(--flame-soft); border: 1px solid #FFD0C5; border-radius: var(--radius); margin-bottom: 16px; flex-wrap: wrap; }
.admin-table { background: white; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 32px; }
.admin-table-head { display: grid; grid-template-columns: 28px 2fr 1fr 80px 70px 28px 120px; gap: 12px; padding: 12px 20px; background: var(--bg-2); border-bottom: 1px solid var(--border); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 600; color: var(--fg-3); align-items: center; }
.admin-table-row { display: grid; grid-template-columns: 28px 2fr 1fr 80px 70px 28px 120px; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--border); align-items: center; cursor: pointer; transition: background 120ms; }
.admin-table-row:hover { background: #FAFAF7; }
.admin-expand-detail { padding: 16px 20px 16px 52px; background: var(--bg-2); border-bottom: 1px solid var(--border); }
.confidence-bar { width: 40px; height: 5px; border-radius: 3px; background: var(--border); overflow: hidden; }
.confidence-fill { height: 100%; border-radius: 3px; }
.btn-publish { background: var(--success); color: white; border: none; padding: 6px 12px; border-radius: 6px; font-size: 12px; font-weight: 600; cursor: pointer; }
.btn-publish:hover { background: #0B7340; }
.btn-reject { background: white; border: 1px solid var(--border-strong); padding: 6px 12px; border-radius: 6px; font-size: 12px; font-weight: 500; cursor: pointer; color: var(--fg-2); }
.btn-reject:hover { border-color: var(--ink); }
.upload-label { background: white; border: 1px solid var(--border-strong); padding: 10px 16px; border-radius: var(--radius); font-size: 13px; font-weight: 500; cursor: pointer; color: var(--fg-1); display: flex; align-items: center; gap: 6px; }
.upload-label:hover { border-color: var(--ink); }
.activity-log { background: white; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.activity-entry { display: flex; align-items: center; gap: 12px; padding: 12px 20px; border-bottom: 1px solid var(--border); }
.activity-dot { width: 8px; height: 8px; border-radius: 4px; flex-shrink: 0; }

/* FOOTER */
.footer { border-top: 1px solid var(--border); padding: 48px 0 32px; background: var(--bg-2); margin-top: 80px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; }
.footer-brand { font-size: 16px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.footer-desc { font-size: 13px; color: var(--fg-3); max-width: 320px; }
.footer-col-title { font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 600; color: var(--fg-3); margin-bottom: 14px; }
.footer-col a { display: block; font-size: 14px; color: var(--fg-2); margin-bottom: 10px; }
.footer-col a:hover { color: var(--fg-1); }
.footer-bottom { border-top: 1px solid var(--border); margin-top: 40px; padding-top: 20px; font-size: 12px; color: var(--fg-3); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { color: var(--fg-3); }
.footer-bottom-links a:hover { color: var(--fg-1); }

/* CSV PREVIEW */
.csv-preview { background: white; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; margin-bottom: 24px; box-shadow: var(--shadow-2); }
.csv-table { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; max-height: 240px; overflow-y: auto; }
.csv-table-head { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 12px; padding: 8px 14px; background: var(--bg-2); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 600; color: var(--fg-3); border-bottom: 1px solid var(--border); position: sticky; top: 0; }
.csv-table-row { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 12px; padding: 10px 14px; border-bottom: 1px solid var(--border); font-size: 13px; color: var(--fg-2); }

/* DUPLICATE COMPARE */
.dup-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
.dup-card { background: white; border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
.dup-card.existing { border-color: var(--success); }

/* MOBILE-FIRST HAMBURGER MENU */
.mobile-menu { display: none; position: fixed; top: var(--nav-h); left: 0; right: 0; bottom: 0; background: white; z-index: 49; padding: 24px 20px; flex-direction: column; gap: 4px; overflow-y: auto; }
.mobile-menu.open { display: flex; }
.mobile-menu a { font-size: 16px; font-weight: 500; color: var(--fg-2); padding: 12px 0; border-bottom: 1px solid var(--border); }
.mobile-menu a:last-child { border-bottom: none; }

/* ====================== RESPONSIVE ====================== */

@media (max-width: 1024px) {
  .closing-section { grid-template-columns: 1fr; }
  .newsletter { position: static; }
  .detail-hero { grid-template-columns: 1fr; }
  .detail-hero-grid { grid-template-columns: 1fr !important; gap: 24px !important; }
  .detail-body { grid-template-columns: 1fr; }
  .detail-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .admin-table-head, .admin-table-row { grid-template-columns: 28px 2fr 1fr 70px 60px 120px; }
  .admin-table-head > :nth-child(6), .admin-table-row > :nth-child(6) { display: none; }
}

@media (max-width: 768px) {
  .nav { padding: 0 20px; gap: 12px; }
  .nav-links { display: none; }
  .hamburger { display: block; }
  .nav-btn-ghost { display: none; }
  .container, .container-wide { padding: 0 20px; }
  .hero { padding: 48px 0 32px; }
  .hero-title { font-size: clamp(32px, 8vw, 48px); }
  .hero-sub { font-size: 16px; margin-bottom: 28px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-card { padding: 16px; }
  .stat-num { font-size: 26px; }
  .contest-grid { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .closing-section { grid-template-columns: 1fr; gap: 32px; }
  .browse-layout { grid-template-columns: 1fr; gap: 0; }
  .browse-sidebar { position: static; border-bottom: 1px solid var(--border); padding-bottom: 20px; margin-bottom: 20px; }
  .detail-hero { grid-template-columns: 1fr; gap: 20px; }
  .detail-hero-grid { grid-template-columns: 1fr !important; gap: 20px !important; }
  .detail-title { font-size: 24px; }
  .detail-avatar { width: 56px; height: 56px; font-size: 22px; }
  .detail-stats { grid-template-columns: repeat(2, 1fr); }
  .detail-body { grid-template-columns: 1fr; gap: 32px; }
  .calendar-day { min-height: 60px; padding: 4px; }
  .calendar-day-num { font-size: 11px; }
  .calendar-event { font-size: 8px; padding: 1px 3px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer { padding: 32px 0 24px; margin-top: 48px; }
  .admin-stats { grid-template-columns: repeat(2, 1fr); }
  .admin-table-head, .admin-table-row { grid-template-columns: 28px 1fr 80px 100px; }
  .admin-table-head > :nth-child(3), .admin-table-row > :nth-child(3) { display: none; }
  .admin-table-head > :nth-child(5), .admin-table-row > :nth-child(5) { display: none; }
  .admin-table-head > :nth-child(6), .admin-table-row > :nth-child(6) { display: none; }
  .admin-expand-detail { padding: 12px 16px; }
  .dup-compare { grid-template-columns: 1fr; }
  .csv-table-head, .csv-table-row { grid-template-columns: 1fr 1fr; }
  .csv-table-head > :nth-child(3), .csv-table-row > :nth-child(3),
  .csv-table-head > :nth-child(4), .csv-table-row > :nth-child(4) { display: none; }
}

@media (max-width: 480px) {
  .nav { padding: 0 16px; }
  .container, .container-wide { padding: 0 16px; }
  .hero { padding: 32px 0 24px; }
  .hero-badge { font-size: 12px; padding: 5px 12px; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .cat-grid { grid-template-columns: 1fr; }
  .search-bar { flex-wrap: wrap; padding: 8px 12px; }
  .search-bar .search-btn { width: 100%; justify-content: center; }
  .detail-btn-row { grid-template-columns: 1fr; }
  .detail-stats { grid-template-columns: 1fr; }
  .calendar-grid { font-size: 10px; }
  .calendar-head { padding: 6px 2px; font-size: 10px; }
  .calendar-day { min-height: 44px; }
  .admin-stats { grid-template-columns: 1fr; }
  .admin-table-head, .admin-table-row { grid-template-columns: 1fr 80px; gap: 8px; }
  .admin-table-head > :nth-child(1), .admin-table-row > :nth-child(1),
  .admin-table-head > :nth-child(3), .admin-table-row > :nth-child(3),
  .admin-table-head > :nth-child(4), .admin-table-row > :nth-child(4),
  .admin-table-head > :nth-child(5), .admin-table-row > :nth-child(5),
  .admin-table-head > :nth-child(6), .admin-table-row > :nth-child(6) { display: none; }
  .bulk-bar { font-size: 12px; padding: 8px 12px; }
}

/* View modes */
.view-list { grid-template-columns: 1fr !important; }
.view-list .contest-card { padding: 12px 16px; gap: 4px; }
.view-list .contest-card .contest-card-header { gap: 10px; }
.view-list .contest-card .contest-avatar { width: 50px !important; height: 50px !important; }
.view-list .contest-card .contest-prize { display: none; }
.view-list .contest-card .contest-tags { display: none; }
.density-compact .contest-card { padding: 10px; }
.density-compact .contest-card-title { font-size: 13px; }
.density-compact .contest-meta { font-size: 11px; }
.density-compact .contest-tags { display: none; }
.density-compact .contest-prize { display: none; }
.density-spacious .contest-card { padding: 24px; }
.density-spacious .contest-card-title { font-size: 17px; }
/* Dark mode */
body.dark-mode { --bg-1: #0A0A0A; --bg-2: #161616; --fg-1: #F0F0F0; --fg-2: #A0A0A0; --fg-3: #707070; --border: #2A2A2A; }
body.dark-mode .contest-card { background: #161616; border-color: #2A2A2A; }
body.dark-mode header { background: rgba(10,10,10,0.9); border-color: #2A2A2A; }
body.dark-mode .footer { background: #161616; border-color: #2A2A2A; }
body.dark-mode .filter-btn { background: #1A1A1A; border-color: #2A2A2A; color: #A0A0A0; }
body.dark-mode .sort-btn { color: #A0A0A0; }
body.dark-mode .fopt { color: #A0A0A0; }
body.dark-mode .fopt.active { background: #2A2A2A; color: #F0F0F0; }