/* ============================================
   手机游戏网 — 组件样式
   按钮、区块、卡片、标签、筛选栏、页头、搜索、侧边栏等
   ============================================ */

/* --- Buttons --- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2); font-family: var(--f-display); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; border-radius: var(--r-sm); transition: all var(--duration) var(--ease-out); }
.btn-primary { font-size: var(--text-sm); padding: var(--sp-3) var(--sp-8); background: var(--c-accent); color: var(--c-base); }
.btn-primary:hover { background: #e6ff4d; box-shadow: 0 0 30px var(--c-accent-glow); transform: translateY(-2px); }
.btn-ghost { font-size: var(--text-sm); padding: var(--sp-3) var(--sp-6); border: 1px solid var(--c-border); color: var(--c-text-1); }
.btn-ghost:hover { border-color: var(--c-accent); color: var(--c-accent); }

/* --- Section --- */
.section { padding: var(--sp-20) 0; }
.section-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: var(--sp-10); gap: var(--sp-4); }
.section-title { font-family: var(--f-display); font-size: var(--text-2xl); font-weight: 700; letter-spacing: -0.01em; color: var(--c-text-1); line-height: 1; }
.section-title .accent { color: var(--c-accent); }
.section-link { font-family: var(--f-display); font-size: var(--text-sm); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-accent); display: flex; align-items: center; gap: var(--sp-2); transition: gap var(--duration) var(--ease-out); white-space: nowrap; }
.section-link:hover { gap: var(--sp-3); }
.section-link svg { width: 16px; height: 16px; }

/* --- Card System --- */
.card-grid { display: grid; gap: var(--sp-6); }
.card-grid--3 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.card-grid--4 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card-grid--2-1 { grid-template-columns: 2fr 1fr; }
.card-grid--1-1 { grid-template-columns: 1fr 1fr; }
.card-grid--news { grid-template-columns: repeat(3, 1fr); }
.card { position: relative; border-radius: var(--r-lg); overflow: hidden; background: var(--c-surface-1); border: 1px solid var(--c-border); transition: all var(--duration) var(--ease-out); }
.card:hover { border-color: var(--c-border-accent); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.3), 0 0 0 1px var(--c-border-accent); }
.card-img { position: relative; aspect-ratio: 16/9; overflow: hidden; background: var(--c-surface-2); }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease-out); }
.card:hover .card-img img { transform: scale(1.06); }
.card-img-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(19,17,15,0.6) 0%, transparent 50%); }
.card-body { padding: var(--sp-5); }
.card--wide { display: grid; grid-template-columns: 1.2fr 1fr; }
.card--wide .card-img { aspect-ratio: auto; height: 100%; }
.card--wide .card-body { display: flex; flex-direction: column; justify-content: center; }
.card--wide .card-desc { -webkit-line-clamp: 4; }
.card-tag { display: inline-block; font-family: var(--f-display); font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--c-accent); margin-bottom: var(--sp-2); }
.card-title { font-family: var(--f-display); font-size: var(--text-lg); font-weight: 700; line-height: 1.25; color: var(--c-text-1); margin-bottom: var(--sp-2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-title a { color: inherit; text-decoration: none; transition: color var(--duration) var(--ease-out); }
.card-title a:hover { color: var(--c-accent); }
.card-desc { font-size: var(--text-sm); color: var(--c-text-2); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: var(--sp-4); }
.card-meta { display: flex; align-items: center; gap: var(--sp-3); font-size: var(--text-xs); color: var(--c-text-3); }
.card-meta-item { display: flex; align-items: center; gap: var(--sp-1); }
.card-link { display: block; color: inherit; text-decoration: none; }
.card-grid > .card-link { display: contents; }
.card-grid--news > .card-link { display: block; }
.card-grid--news > .card-link > .card { height: 100%; }
.card-grid--news > .card-link:first-child { grid-column: span 2; }
.card-link:hover .card-title { color: var(--c-accent); }
.card--featured { display: grid; grid-template-columns: 1.2fr 1fr; min-height: 400px; }
.card--featured .card-img { aspect-ratio: auto; height: 100%; }
.card--featured .card-body { display: flex; flex-direction: column; justify-content: center; padding: var(--sp-10); }
.card--featured .card-title { font-size: var(--text-xl); -webkit-line-clamp: 3; }

/* --- Score Badge --- */
.score { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; font-family: var(--f-display); font-size: var(--text-lg); font-weight: 700; border-radius: var(--r-md); line-height: 1; }
.score--high { background: var(--c-accent); color: var(--c-base); }
.score--mid { background: var(--c-amber); color: var(--c-base); }
.score--low { background: var(--c-red); color: white; }

/* --- Review Score Row --- */
.review-score-row { display: flex; align-items: center; gap: var(--sp-3); margin-bottom: var(--sp-3); }
.review-verdict { font-family: var(--f-display); font-size: var(--text-sm); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
.review-stars { display: flex; gap: 2px; color: var(--c-amber); }

/* --- Tags / Chips --- */
.chip { display: inline-flex; align-items: center; gap: var(--sp-1); font-family: var(--f-display); font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; padding: var(--sp-1) var(--sp-3); border-radius: var(--r-sm); border: 1px solid var(--c-border); color: var(--c-text-2); transition: all var(--duration) var(--ease-out); }
.chip:hover { border-color: var(--c-accent); color: var(--c-accent); }
.chip--active { background: var(--c-accent); color: var(--c-base); border-color: var(--c-accent); }
.chip--active:hover { color: var(--c-base); }

/* --- Filter Bar --- */
.filter-bar { display: flex; align-items: center; gap: var(--sp-2); margin-bottom: var(--sp-8); flex-wrap: wrap; }

/* --- Page Header --- */
.page-header { padding: var(--sp-16) 0 var(--sp-10); }
.page-title { font-family: var(--f-display); font-size: var(--text-hero); font-weight: 700; line-height: 1.05; color: var(--c-text-1); margin-bottom: var(--sp-4); }
.page-title .accent { color: var(--c-accent); }
.page-subtitle { font-size: var(--text-lg); color: var(--c-text-2); max-width: 600px; }

/* --- Search Box --- */
.search-box { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-3) var(--sp-5); background: var(--c-surface-1); border: 1px solid var(--c-border); border-radius: var(--r-md); transition: border-color var(--duration) var(--ease-out); max-width: 480px; }
.search-box:focus-within { border-color: var(--c-accent); }
.search-box input { flex: 1; border: none; background: none; outline: none; color: var(--c-text-1); font-family: var(--f-body); font-size: var(--text-sm); }
.search-box input::placeholder { color: var(--c-text-3); }
.search-box img { width: 18px; height: 18px; flex-shrink: 0; }

/* --- Sidebar --- */
.content-with-sidebar { display: grid; grid-template-columns: 1fr 340px; gap: var(--sp-8); }
.sidebar-widget { background: var(--c-surface-1); border: 1px solid var(--c-border); border-radius: var(--r-lg); padding: var(--sp-6); }
.sidebar-widget + .sidebar-widget { margin-top: var(--sp-6); }
.sidebar-title { font-family: var(--f-display); font-size: var(--text-base); font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--c-text-1); margin-bottom: var(--sp-5); padding-bottom: var(--sp-3); border-bottom: 1px solid var(--c-border); }
.trending-item { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-3) 0; border-bottom: 1px solid var(--c-border); transition: all var(--duration) var(--ease-out); }
.trending-item:hover { opacity: 0.8; }
.trending-item:hover .trending-text { color: var(--c-accent); }
.trending-item:last-child { border-bottom: none; }
.trending-num { flex: none; font-family: var(--f-display); font-size: 1.75rem; font-weight: 700; font-variant-numeric: tabular-nums; font-feature-settings: 'tnum' 1, 'lnum' 1; letter-spacing: 0.03em; color: var(--c-accent); line-height: 1; min-width: 24px; }
.trending-text { font-size: var(--text-sm); color: var(--c-text-2); line-height: 1.5; }

/* --- Flash News --- */
.flash-news-item { display: block; transition: color var(--duration) var(--ease-out); }
.flash-news-item:hover .flash-news-text { color: var(--c-accent); }
.flash-news-time { display: block; font-size: var(--text-xs); color: var(--c-accent); font-family: var(--f-display); font-weight: 600; margin-bottom: var(--sp-1); }
.flash-news-text { font-size: var(--text-sm); color: var(--c-text-2); line-height: 1.5; transition: color var(--duration) var(--ease-out); }

/* --- Load More --- */
.load-more { margin-top: var(--sp-12); text-align: center; }

/* --- Utility --- */
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.text-accent { color: var(--c-accent); }
.text-amber { color: var(--c-amber); }
.text-red { color: var(--c-red); }
.text-teal { color: var(--c-teal); }
.img-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-family: var(--f-display); font-size: 2rem; color: var(--c-text-3); }
.img-placeholder--1 { background: linear-gradient(135deg, #1a1816 0%, #2d2a24 50%, #3a3630 100%); }
.img-placeholder--2 { background: linear-gradient(135deg, #1a1f16 0%, #243019 50%, #30401a 100%); }
.img-placeholder--3 { background: linear-gradient(135deg, #1a1618 0%, #2d1924 50%, #3a1a30 100%); }
.img-placeholder--4 { background: linear-gradient(135deg, #16181a 0%, #19242d 50%, #1a3040 100%); }
.img-placeholder--5 { background: linear-gradient(135deg, #1a1916 0%, #2d2719 50%, #403a1a 100%); }
.noise-overlay::before { content: ''; position: absolute; inset: 0; opacity: 0.03; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E"); pointer-events: none; z-index: 0; }

/* --- Responsive: Components --- */
@media (max-width: 1024px) {
  .card--featured { grid-template-columns: 1fr; }
  .card--featured .card-img { aspect-ratio: 16/9; height: auto; }
  .card--wide { grid-template-columns: 1.1fr 1fr; }
  .content-with-sidebar { grid-template-columns: 1fr; }
  .card-grid--news { grid-template-columns: repeat(2, 1fr); }
  .card-grid--news > .card-link:first-child { grid-column: span 2; }
  .card-grid--2-1 { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .card-grid--3 { grid-template-columns: 1fr; }
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .card-grid--news { grid-template-columns: 1fr; }
  .card-grid--news > .card-link:first-child { grid-column: span 1; }
  .card--wide { grid-template-columns: 1fr; }
  .card--wide .card-img { aspect-ratio: 16/9; height: auto; }
}

@media (max-width: 480px) {
  .card-grid--4 { grid-template-columns: 1fr; }
  .card-grid--1-1 { grid-template-columns: 1fr; }
}