/* ==========================================================================
   MOM GAMES - modern responsive design system
   ========================================================================== */
:root {
  --bg: #0e1018;
  --bg-elev: #161a26;
  --bg-elev-2: #1e2334;
  --border: #283047;
  --text: #eef1f8;
  --text-muted: #9aa3bd;
  --accent: #7c5cff;
  --accent-2: #00d4ff;
  --accent-grad: linear-gradient(135deg, #7c5cff 0%, #00d4ff 100%);
  --danger: #ff4d6d;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --maxw: 1200px;
  --header-h: 64px;
  font-size: 16px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 16px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14, 16, 24, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.brand span {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.main-nav {
  display: flex;
  gap: 4px;
  margin-left: 8px;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}

.main-nav::-webkit-scrollbar {
  display: none;
}

.main-nav a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 0.9rem;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}

.main-nav a:hover,
.main-nav a.is-active {
  color: var(--text);
  background: var(--bg-elev-2);
}

.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 14px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: border-color 0.2s;
}

.header-search:hover {
  border-color: var(--accent);
  color: var(--text);
}

.header-search svg {
  width: 18px;
  height: 18px;
}

.header-search span {
  font-size: 0.9rem;
}

.nav-toggle {
  display: none;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 40px;
  height: 40px;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  margin: 24px 0;
  padding: 48px 28px;
  border-radius: var(--radius);
  background: radial-gradient(120% 140% at 0% 0%, rgba(124, 92, 255, 0.35), transparent 55%),
    radial-gradient(120% 140% at 100% 100%, rgba(0, 212, 255, 0.28), transparent 55%),
    var(--bg-elev);
  border: 1px solid var(--border);
  overflow: hidden;
}

.hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  line-height: 1.15;
  max-width: 720px;
}

.hero p {
  margin-top: 12px;
  color: var(--text-muted);
  max-width: 620px;
  font-size: 1.02rem;
}

.hero .btn {
  margin-top: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  background: var(--accent-grad);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 6px 18px rgba(124, 92, 255, 0.4);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(124, 92, 255, 0.55);
}

.btn--ghost {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  box-shadow: none;
  color: var(--text);
}

.btn--ghost:hover {
  border-color: var(--accent);
  box-shadow: none;
}

/* ---------- Sections ---------- */
.section {
  margin: 40px 0;
}

.section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 18px;
  gap: 12px;
}

.section__head h2 {
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section__head h2::before {
  content: "";
  width: 6px;
  height: 22px;
  border-radius: 3px;
  background: var(--accent-grad);
}

.more-link {
  color: var(--accent-2);
  font-size: 0.9rem;
  font-weight: 600;
}

.more-link:hover {
  text-decoration: underline;
}

/* ---------- Game grid (horizontal scroll row) ---------- */

/* 外层 section 不再 padding，由 .container 控制左缘对齐 */
.game-grid-wrap {
  /* 让滚动条延伸到屏幕边缘但内容从 container 左边开始 */
  overflow-x: auto;
  overflow-y: visible;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  /* 内边距：左=container 的 padding，右留出一截提示"还有更多" */
  padding-bottom: 8px;
  /* 负 margin 抵消 container 的 padding，让滚动条贴边 */
  margin-left: 0;
  margin-right: 0;
  /* 滚动惯性 */
  -webkit-overflow-scrolling: touch;
}

.game-grid-wrap::-webkit-scrollbar {
  height: 4px;
}

.game-grid-wrap::-webkit-scrollbar-track {
  background: transparent;
}

.game-grid-wrap::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 999px;
}

.game-grid {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: 12px;
  /* 左对齐，不拉伸 */
  justify-content: flex-start;
  align-items: flex-start;
  /* 让行宽撑满滚动容器 */
  width: max-content;
  min-width: 100%;
}

/* 正方形卡片，固定宽度 */
.game-card {
  flex: 0 0 130px;
  width: 130px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: transform 0.18s, border-color 0.18s, box-shadow 0.18s;
  position: relative;
}

.game-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

/* 正方形缩略图 */
.game-card__thumb {
  display: block;
  width: 130px;
  height: 130px;
  object-fit: cover;
  object-position: center;
  background: var(--bg-elev-2);
  flex-shrink: 0;
}

.game-card__title {
  width: 130px;
  padding: 7px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

.game-card__badge {
  position: absolute;
  top: 6px;
  left: 6px;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
  pointer-events: none;
}

/* ---------- Ad slot ---------- */
.ad-slot {
  margin: 28px auto;
  text-align: center;
}

.ad-slot__label {
  font-size: 0.65rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.ad-slot ins {
  display: block;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 20px 0;
}

.breadcrumb a:hover {
  color: var(--accent-2);
}

.breadcrumb span {
  color: var(--text);
}

/* ---------- Game detail (play) ---------- */
.play-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 24px;
  align-items: start;
  margin: 20px 0 40px;
}

.game-stage {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.game-stage__frame {
  position: relative;
  aspect-ratio: 16 / 10;
  width: 100%;
  background: #000;
}

.game-stage__frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.game-cover {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  background-size: cover;
  background-position: center;
  cursor: pointer;
}

.game-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(8, 10, 18, 0.62);
  backdrop-filter: blur(2px);
}

.game-cover > * {
  position: relative;
  z-index: 1;
}

.game-cover__title {
  font-size: clamp(1.3rem, 3vw, 2rem);
  font-weight: 800;
  text-align: center;
  padding: 0 16px;
}

.play-btn-big {
  font-size: 1.1rem;
  padding: 14px 32px;
}

.game-meta {
  padding: 18px;
}

.game-meta h1 {
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.tag {
  font-size: 0.78rem;
  color: var(--text-muted);
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 999px;
}

.prose {
  color: var(--text-muted);
  margin-top: 8px;
}

.prose h2 {
  color: var(--text);
  font-size: 1.15rem;
  margin: 20px 0 8px;
}

.prose p {
  margin-bottom: 10px;
}

.sidebar {
  position: sticky;
  top: calc(var(--header-h) + 16px);
}

/* ---------- Search ---------- */
.search-wrap {
  margin: 28px 0;
}

.search-input {
  width: 100%;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 14px 20px;
  color: var(--text);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.search-input:focus {
  border-color: var(--accent);
}

.empty-state {
  text-align: center;
  padding: 60px 16px;
  color: var(--text-muted);
}

.empty-state h2 {
  color: var(--text);
  margin-bottom: 8px;
}

/* ---------- SEO content block ---------- */
.seo-block {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin: 40px 0;
  color: var(--text-muted);
}

.seo-block h2 {
  color: var(--text);
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.seo-block p {
  margin-bottom: 12px;
}

/* ---------- Legal pages ---------- */
.legal {
  max-width: 820px;
  margin: 32px auto;
}

.legal h1 {
  font-size: 2rem;
  margin-bottom: 8px;
}

.legal h2 {
  font-size: 1.3rem;
  margin: 26px 0 10px;
}

.legal h3 {
  font-size: 1.05rem;
  margin: 18px 0 6px;
}

.legal p,
.legal li {
  color: var(--text-muted);
  margin-bottom: 10px;
}

.legal ul {
  padding-left: 22px;
}

.legal a {
  color: var(--accent-2);
}

.legal a:hover {
  text-decoration: underline;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  margin-top: 56px;
  padding: 36px 0 28px;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
}

.footer-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  max-width: 640px;
}

.footer-cats a {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.footer-cats a:hover {
  color: var(--accent-2);
}

.footer-bottom {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 16px;
}

.footer-links a:hover {
  color: var(--accent-2);
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .play-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}

@media (max-width: 680px) {
  .main-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    padding: 8px;
    gap: 2px;
    transform: translateY(-120%);
    transition: transform 0.25s ease;
    overflow-y: auto;
    max-height: calc(100vh - var(--header-h));
    z-index: 99;
  }

  .main-nav.is-open {
    transform: translateY(0);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .header-search span {
    display: none;
  }

  .hero {
    padding: 32px 20px;
  }

  /* 手机端卡片略小：100px 正方形，3 张可视 + 半张提示更多 */
  .game-card {
    flex: 0 0 100px;
    width: 100px;
  }

  .game-card__thumb {
    width: 100px;
    height: 100px;
  }

  .game-card__title {
    width: 100px;
    font-size: 0.68rem;
    padding: 5px 6px;
  }

  .game-grid {
    gap: 8px;
  }
}