/* ============================================================
   SpeedSlope.net — casual game portal
   Dark near-black canvas, single lime accent, hard 2px borders,
   arcade press-buttons. Fonts: Nunito (display) + Inter (body).
   ============================================================ */

:root {
  --bg: #0e120b;
  --surface: #151a10;
  --surface-2: #1c2314;
  --surface-3: #232b19;
  --line: #2a331e;
  --line-strong: #3a4628;
  --text: #f2f5ea;
  --muted: #97a486;
  --accent: #b9f226;
  --accent-dark: #79a115;
  --accent-ink: #111503;
  --radius: 16px;
  --radius-sm: 10px;
  --border: 2px solid var(--line);
  --font-display: 'Nunito', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --header-h: 64px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }

::selection { background: var(--accent); color: var(--accent-ink); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(14, 18, 11, .92);
  backdrop-filter: blur(10px);
  border-bottom: var(--border);
}
.header-inner {
  display: flex; align-items: center; gap: 20px;
  height: var(--header-h);
}
.logo {
  font-family: var(--font-display);
  font-weight: 900; font-size: 22px; letter-spacing: -.02em;
  display: flex; align-items: center; gap: 8px; flex-shrink: 0;
}
.logo .logo-mark {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 3px 0 var(--accent-dark);
}
.logo .logo-mark svg { width: 13px; height: 13px; }
.logo em { font-style: normal; color: var(--accent); }

.main-nav { display: flex; align-items: center; gap: 2px; }
.main-nav > a, .nav-drop > button {
  padding: 8px 14px; border-radius: 99px;
  font-weight: 700; font-size: 14px; color: var(--muted);
  background: none; border: none;
  transition: color .15s, background .15s;
  display: inline-flex; align-items: center; gap: 6px;
}
.main-nav > a:hover, .main-nav > a.active,
.nav-drop:hover > button {
  color: var(--text); background: var(--surface-2);
}

.nav-drop { position: relative; }
.nav-drop-menu {
  position: absolute; top: calc(100% + 10px); left: 0;
  min-width: 220px; padding: 10px;
  background: var(--surface); border: var(--border); border-radius: var(--radius);
  box-shadow: 0 16px 40px rgba(0, 0, 0, .5);
  display: none;
}
.nav-drop:hover .nav-drop-menu { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.nav-drop-menu a {
  padding: 8px 12px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600; color: var(--muted);
}
.nav-drop-menu a:hover { background: var(--surface-2); color: var(--accent); }

.header-search { margin-left: auto; position: relative; flex-shrink: 0; }
.header-search input {
  width: 220px; height: 38px; padding: 0 38px 0 16px;
  background: var(--surface); border: var(--border); border-radius: 99px;
  color: var(--text); font-size: 14px; font-family: var(--font-body);
  outline: none; transition: border-color .15s, width .2s;
}
.header-search input:focus { border-color: var(--accent); width: 260px; }
.header-search input::placeholder { color: var(--muted); }
.header-search button {
  position: absolute; right: 5px; top: 50%; transform: translateY(-50%);
  width: 28px; height: 28px; border: none; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink);
  display: flex; align-items: center; justify-content: center;
}
.header-search button svg { width: 14px; height: 14px; }

.menu-toggle {
  display: none; margin-left: auto;
  width: 40px; height: 40px; border: var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--text);
}
.mobile-nav { display: none; border-bottom: var(--border); background: var(--surface); }
.mobile-nav.open { display: block; }
.mobile-nav .container { padding-top: 12px; padding-bottom: 16px; display: grid; gap: 4px; }
.mobile-nav a { padding: 10px 12px; border-radius: var(--radius-sm); font-weight: 700; color: var(--muted); }
.mobile-nav a:hover { background: var(--surface-2); color: var(--text); }
.mobile-nav .nav-label { font-size: 11px; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); margin: 10px 12px 2px; }
.mobile-search { display: flex; gap: 8px; margin-bottom: 8px; }
.mobile-search input {
  flex: 1; height: 42px; padding: 0 16px;
  background: var(--bg); border: var(--border); border-radius: 99px;
  color: var(--text); outline: none; font-size: 14px;
}
.mobile-search button {
  width: 42px; height: 42px; border-radius: 50%; border: none;
  background: var(--accent); color: var(--accent-ink);
  display: flex; align-items: center; justify-content: center;
}

/* ---------- Buttons (arcade press) ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px; border-radius: 99px;
  font-family: var(--font-display); font-weight: 800; font-size: 14px;
  border: 2px solid var(--line-strong);
  background: var(--surface-2); color: var(--text);
  transition: transform .08s, box-shadow .08s, background .15s, border-color .15s;
  user-select: none;
}
.btn:hover { border-color: var(--accent); }
.btn-primary {
  background: var(--accent); color: var(--accent-ink);
  border-color: var(--accent-dark);
  box-shadow: 0 5px 0 var(--accent-dark);
}
.btn-primary:hover { transform: translateY(2px); box-shadow: 0 3px 0 var(--accent-dark); border-color: var(--accent-dark); }
.btn-primary:active { transform: translateY(5px); box-shadow: 0 0 0 var(--accent-dark); }
.btn-ghost { box-shadow: 0 5px 0 rgba(0,0,0,.35); }
.btn-ghost:hover { transform: translateY(2px); box-shadow: 0 3px 0 rgba(0,0,0,.35); }
.btn-ghost:active { transform: translateY(5px); box-shadow: none; }
.btn svg { width: 15px; height: 15px; }
.btn.active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent-dark); }
.btn-lg { padding: 16px 36px; font-size: 18px; }

/* ---------- Section headers ---------- */
.section { margin: 44px 0; }
.section-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 18px; }
.section-head h2 { font-size: 24px; font-weight: 900; letter-spacing: -.01em; }
.section-head h2 .tick { color: var(--accent); }
.section-head .more {
  margin-left: auto; font-size: 13px; font-weight: 700; color: var(--muted);
  display: inline-flex; align-items: center; gap: 4px;
}
.section-head .more:hover { color: var(--accent); }

/* ---------- Game grid & cards ---------- */
.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}
.game-card { position: relative; display: block; }
.game-card .thumb {
  position: relative; aspect-ratio: 1; overflow: hidden;
  border: var(--border); border-radius: var(--radius);
  background: var(--surface);
  transition: transform .18s, border-color .18s, box-shadow .18s;
}
.game-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.game-card:hover .thumb {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 10px 0 -4px rgba(185, 242, 38, .25), 0 14px 28px rgba(0, 0, 0, .4);
}
.game-card .play-hint {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(14, 18, 11, .45); opacity: 0; transition: opacity .18s;
}
.game-card:hover .play-hint { opacity: 1; }
.play-hint span {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 0 var(--accent-dark);
}
.play-hint svg { width: 20px; height: 20px; margin-left: 3px; }
.badge {
  position: absolute; top: 8px; left: 8px; z-index: 2;
  padding: 3px 9px; border-radius: 99px;
  font-family: var(--font-display); font-size: 11px; font-weight: 900;
  text-transform: uppercase; letter-spacing: .06em;
  background: var(--accent); color: var(--accent-ink);
  border: 2px solid var(--accent-ink);
}
.badge.new { background: #fff; }
.game-card .meta { padding: 10px 4px 0; }
.game-card .title { font-family: var(--font-display); font-weight: 800; font-size: 15px; }
.game-card .sub {
  display: flex; align-items: center; gap: 10px;
  font-size: 12px; color: var(--muted); margin-top: 2px;
}
.game-card .sub .star { color: var(--accent); display: inline-flex; align-items: center; gap: 3px; font-weight: 700; }
.game-card .sub .star svg { width: 11px; height: 11px; }

/* ---------- Hero (featured) ---------- */
.hero { margin: 28px 0 8px; }
.hero-grid {
  display: grid; gap: 16px;
  grid-template-columns: 2fr 1fr; grid-template-rows: 236px 236px;
}
.hero-item {
  position: relative; overflow: hidden;
  border: var(--border); border-radius: 20px;
  display: block; background: var(--surface);
  transition: border-color .18s;
}
.hero-item:first-child { grid-row: span 2; }
.hero-item img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.hero-item::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10, 13, 7, .88));
}
.hero-item:hover { border-color: var(--accent); }
.hero-item .hero-info {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 2;
  padding: 18px 20px; display: flex; align-items: flex-end; gap: 14px;
}
.hero-item .hero-info h3 { font-size: 20px; font-weight: 900; }
.hero-item:first-child .hero-info h3 { font-size: 30px; }
.hero-item .hero-info p { color: #cfd8bd; font-size: 13px; margin-top: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.hero-item .btn { flex-shrink: 0; }

/* ---------- Category chips ---------- */
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 99px;
  border: var(--border); background: var(--surface);
  font-family: var(--font-display); font-weight: 800; font-size: 14px;
  transition: border-color .15s, background .15s, transform .15s;
}
.chip:hover { border-color: var(--accent); transform: translateY(-2px); }
.chip .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.chip small { color: var(--muted); font-weight: 700; }

/* ---------- Ad placeholders ---------- */
.ad-slot {
  border: 2px dashed var(--line-strong); border-radius: var(--radius-sm);
  background: var(--surface);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  color: var(--muted); text-align: center; overflow: hidden;
}
.ad-slot .ad-label { font-size: 10px; letter-spacing: .18em; text-transform: uppercase; }
.ad-slot .ad-size { font-size: 12px; font-weight: 600; opacity: .7; }
.ad-banner { min-height: 110px; margin: 22px auto; max-width: 770px; width: 100%; }
.ad-rect { min-height: 280px; }
.ad-incontent { min-height: 130px; margin: 30px 0; }
.ad-mobile { min-height: 90px; margin: 18px 0; display: none; }

/* ---------- Play page layout ---------- */
.play-layout {
  display: grid; gap: 20px;
  grid-template-columns: 180px minmax(0, 1fr) 180px;
  align-items: start;
}
.play-layout.no-sidebars { grid-template-columns: minmax(0, 1fr); }
.play-layout.no-right { grid-template-columns: 180px minmax(0, 1fr); }
.play-layout.no-left { grid-template-columns: minmax(0, 1fr) 180px; }
.play-side { display: grid; gap: 12px; position: sticky; top: calc(var(--header-h) + 16px); }
.side-title { font-size: 11px; text-transform: uppercase; letter-spacing: .14em; color: var(--muted); font-weight: 800; }
.mini-game { display: block; }
.mini-game .thumb {
  aspect-ratio: 1; border: var(--border); border-radius: var(--radius-sm);
  overflow: hidden; background: var(--surface); transition: border-color .15s, transform .15s;
}
.mini-game img { width: 100%; height: 100%; object-fit: cover; }
.mini-game:hover .thumb { border-color: var(--accent); transform: translateY(-2px); }
.mini-game .t { font-size: 12px; font-weight: 700; font-family: var(--font-display); margin-top: 5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.stage-wrap { min-width: 0; }
.stage {
  position: relative; aspect-ratio: 16 / 9;
  border: var(--border); border-radius: 20px; overflow: hidden;
  background: #000;
}
.stage iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.stage-cover {
  position: absolute; inset: 0; z-index: 3;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px;
  background-size: cover; background-position: center;
}
.stage-cover::before { content: ''; position: absolute; inset: 0; background: rgba(10, 13, 7, .72); backdrop-filter: blur(6px); }
.stage-cover > * { position: relative; }
.stage-cover h2 { font-size: 28px; font-weight: 900; text-shadow: 0 2px 12px rgba(0,0,0,.5); }
.stage-loading {
  position: absolute; inset: 0; z-index: 2; display: none;
  align-items: center; justify-content: center; background: #0a0d07;
}
.stage-loading.show { display: flex; }
.stage-loading .spin {
  width: 46px; height: 46px; border-radius: 50%;
  border: 4px solid var(--line-strong); border-top-color: var(--accent);
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.stage-error {
  position: absolute; inset: 0; z-index: 4; display: none;
  flex-direction: column; align-items: center; justify-content: center; gap: 14px;
  background: #0a0d07; text-align: center; padding: 20px;
}
.stage-error.show { display: flex; }
.stage-error p { color: var(--muted); max-width: 420px; }

.game-bar {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  margin-top: 16px; padding: 14px 18px;
  background: var(--surface); border: var(--border); border-radius: var(--radius);
}
.game-bar h1 { font-size: 22px; font-weight: 900; margin-right: auto; }
.rate-box { display: flex; align-items: center; gap: 8px; }
.rate-stars { display: inline-flex; gap: 2px; }
.rate-stars button {
  background: none; border: none; padding: 2px; color: var(--line-strong);
  transition: color .1s, transform .1s;
}
.rate-stars button svg { width: 20px; height: 20px; display: block; }
.rate-stars button.on { color: var(--accent); }
.rate-stars button:hover { transform: scale(1.2); }
.rate-num { font-weight: 800; font-family: var(--font-display); }
.rate-count { color: var(--muted); font-size: 12px; }

/* Theater mode */
body.theater .play-layout { grid-template-columns: minmax(0, 1fr); }
body.theater .play-side, body.theater .theater-hide { display: none; }
body.theater .stage { aspect-ratio: 16 / 8.2; }

/* Fullscreen stage */
.stage:fullscreen { border-radius: 0; border: none; aspect-ratio: auto; }

/* ---------- Content blocks (SEO) ---------- */
.content-block {
  margin-top: 34px; padding: 28px;
  background: var(--surface); border: var(--border); border-radius: 20px;
}
.content-block h2 { font-size: 20px; font-weight: 900; margin-bottom: 12px; }
.content-block h3 { font-size: 16px; font-weight: 800; margin: 20px 0 8px; }
.content-block p { color: #c6cfba; margin-bottom: 10px; max-width: 75ch; }
.content-block ul, .content-block ol { color: #c6cfba; padding-left: 22px; margin-bottom: 10px; }
.content-block li { margin-bottom: 5px; }
.content-block .tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tag {
  padding: 5px 12px; border-radius: 99px; font-size: 12px; font-weight: 700;
  background: var(--surface-2); border: 2px solid var(--line); color: var(--muted);
}
.tag:hover { color: var(--accent); border-color: var(--accent); }

.faq details {
  border: var(--border); border-radius: var(--radius-sm);
  padding: 14px 18px; margin-bottom: 10px; background: var(--surface-2);
}
.faq summary {
  font-family: var(--font-display); font-weight: 800; cursor: pointer;
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 10px;
}
.faq summary::after { content: '+'; color: var(--accent); font-size: 20px; font-weight: 900; }
.faq details[open] summary::after { content: '–'; }
.faq details p { margin-top: 10px; color: #c6cfba; }

/* ---------- Category / list pages ---------- */
.page-head { margin: 34px 0 8px; }
.page-head h1 { font-size: 34px; font-weight: 900; letter-spacing: -.01em; }
.page-head h1 .tick { color: var(--accent); }
.page-head p { color: var(--muted); max-width: 70ch; margin-top: 8px; }
.list-toolbar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin: 22px 0;
}
.sort-btn {
  padding: 8px 16px; border-radius: 99px; border: var(--border);
  background: var(--surface); color: var(--muted);
  font-family: var(--font-display); font-weight: 800; font-size: 13px;
}
.sort-btn:hover { border-color: var(--accent); color: var(--text); }
.sort-btn.active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent-dark); }
.result-count { color: var(--muted); font-size: 14px; margin-left: auto; }
.load-more-wrap { text-align: center; margin: 30px 0 10px; }
.seo-foot { color: var(--muted); font-size: 14px; margin: 40px 0 0; max-width: 75ch; }

/* Search page */
.search-hero { margin: 34px 0 10px; }
.search-hero form { display: flex; gap: 10px; max-width: 560px; }
.search-hero input {
  flex: 1; height: 50px; padding: 0 20px; font-size: 16px;
  background: var(--surface); border: var(--border); border-radius: 99px;
  color: var(--text); outline: none; font-family: var(--font-body);
}
.search-hero input:focus { border-color: var(--accent); }
.empty-state {
  text-align: center; padding: 60px 20px;
  border: 2px dashed var(--line-strong); border-radius: 20px; margin: 26px 0;
}
.empty-state h2 { font-size: 22px; font-weight: 900; margin-bottom: 8px; }
.empty-state p { color: var(--muted); }

/* ---------- Static pages ---------- */
.prose { max-width: 760px; margin: 34px 0 50px; }
.prose h1 { font-size: 32px; font-weight: 900; margin-bottom: 16px; }
.prose h2 { font-size: 19px; font-weight: 800; margin: 26px 0 10px; }
.prose p, .prose li { color: #c6cfba; margin-bottom: 10px; }
.prose ul, .prose ol { padding-left: 22px; }
.prose a { color: var(--accent); }

/* ---------- Footer ---------- */
.site-footer { margin-top: 70px; border-top: var(--border); background: var(--surface); }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px;
  padding: 46px 0 30px;
}
.footer-grid h4 { font-size: 13px; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); margin-bottom: 14px; }
.footer-grid a { display: block; padding: 4px 0; color: #c6cfba; font-size: 14px; font-weight: 600; }
.footer-grid a:hover { color: var(--accent); }
.footer-blurb { color: var(--muted); font-size: 14px; max-width: 34ch; margin-top: 10px; }
.footer-word {
  font-family: var(--font-display); font-weight: 900;
  font-size: clamp(48px, 10vw, 130px); line-height: .9; letter-spacing: -.02em;
  text-align: center; user-select: none; padding: 10px 0 0;
  color: transparent; -webkit-text-stroke: 2px var(--line-strong);
}
.footer-bottom {
  border-top: var(--border); padding: 18px 0;
  display: flex; gap: 14px; flex-wrap: wrap; align-items: center;
  color: var(--muted); font-size: 13px;
}
.footer-bottom a:hover { color: var(--accent); }
.footer-bottom .copy { margin-right: auto; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .play-layout { grid-template-columns: minmax(0, 1fr) 170px; }
  .play-side.left { display: none; }
}
@media (max-width: 860px) {
  .main-nav, .header-search { display: none; }
  .menu-toggle { display: block; }
  .hero-grid { grid-template-columns: 1fr; grid-template-rows: none; }
  .hero-item { aspect-ratio: 16 / 9; }
  .hero-item:first-child { grid-row: auto; aspect-ratio: 4 / 3; }
  .play-layout { grid-template-columns: minmax(0, 1fr); }
  .play-side.right { display: none; }
  .ad-banner { min-height: 70px; }
  .ad-mobile { display: flex; }
  .game-grid { grid-template-columns: repeat(auto-fill, minmax(108px, 1fr)); gap: 10px; }
  .game-card .title { font-size: 13px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .game-bar h1 { font-size: 17px; width: 100%; }
  .content-block { padding: 20px; }
  .page-head h1 { font-size: 26px; }
  /* Related strip becomes horizontal on mobile */
  .related-strip { display: flex; overflow-x: auto; gap: 10px; padding-bottom: 6px; }
  .related-strip .mini-game { flex: 0 0 96px; }
}

@media (min-width: 861px) {
  .related-strip-desktop-only { display: grid; }
}