/* ============ GameBoost Marketplace — 暗色主题 ============ */
:root {
  --bg: #0b0e14;
  --bg-alt: #10141d;
  --card: #151a25;
  --card-hover: #1b2130;
  --border: #232b3d;
  --text: #e8ecf4;
  --text-dim: #8b93a7;
  --accent: #ffd60a;
  --accent-hover: #ffe14d;
  --accent-ink: #1a1500;
  --green: #34d399;
  --red: #f87171;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.hidden { display: none !important; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input, select { font-family: inherit; }

/* ---- 公告条 ---- */
.announce {
  background: linear-gradient(90deg, #2b2200, #4d3a00);
  color: var(--accent);
  text-align: center;
  font-size: 13px;
  padding: 8px 16px;
}

/* ---- 导航 ---- */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11, 14, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; gap: 22px; height: 64px; }
.logo { display: flex; align-items: center; gap: 6px; font-weight: 800; font-size: 20px; }
.logo-icon { font-size: 24px; }
.logo-text { background: linear-gradient(90deg, #fff, var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav-links { display: flex; gap: 20px; }
.nav-link { color: var(--text-dim); font-size: 14px; transition: color 0.2s; }
.nav-link:hover { color: var(--accent); }
.nav-search {
  flex: 1; display: flex; align-items: center;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden; max-width: 380px;
}
.nav-search input { flex: 1; background: none; border: none; outline: none; color: var(--text); padding: 9px 14px; font-size: 14px; }
.nav-search input::placeholder { color: var(--text-dim); }
.nav-search button { background: none; border: none; padding: 6px 12px; font-size: 15px; }
.nav-auth { display: flex; gap: 10px; margin-left: auto; }
.nav-user { display: flex; align-items: center; gap: 10px; margin-left: auto; font-size: 14px; }
.user-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #ff9d0a);
  color: var(--accent-ink); font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.hamburger { display: none; background: none; border: none; color: var(--text); font-size: 22px; }

/* ---- 按钮 ---- */
.btn {
  border: 1px solid transparent; border-radius: 10px;
  padding: 9px 18px; font-size: 14px; font-weight: 600;
  transition: all 0.2s;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-outline { background: none; border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost { background: none; color: var(--text-dim); }
.btn-ghost:hover { color: var(--accent); }
.btn-lg { padding: 13px 28px; font-size: 16px; border-radius: 12px; }
.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn-block { width: 100%; padding: 12px; }

/* ---- Hero ---- */
.hero { padding: 72px 0 60px; background: radial-gradient(1000px 500px at 80% -10%, rgba(255, 214, 10, 0.08), transparent); }
.hero-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.hero-badge {
  display: inline-block; background: rgba(255, 214, 10, 0.12);
  color: var(--accent); border: 1px solid rgba(255, 214, 10, 0.25);
  border-radius: 999px; padding: 5px 14px; font-size: 13px; margin-bottom: 18px;
}
.hero h1 { font-size: clamp(30px, 4.5vw, 48px); font-weight: 800; line-height: 1.25; margin-bottom: 16px; }
.highlight { color: var(--accent); }
.hero-sub { color: var(--text-dim); font-size: 16px; max-width: 560px; margin-bottom: 28px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }
.hero-stats { display: flex; gap: 40px; flex-wrap: wrap; }
.stat strong { display: block; font-size: 22px; color: var(--accent); }
.stat span { font-size: 13px; color: var(--text-dim); }
.hero-visual { position: relative; height: 320px; }
.hero-orb {
  position: absolute; inset: 10% 15%;
  background: radial-gradient(circle, rgba(255, 214, 10, 0.18), transparent 70%);
  border-radius: 50%; filter: blur(10px);
  animation: pulse 4s ease-in-out infinite;
}
@keyframes pulse { 50% { transform: scale(1.08); opacity: 0.8; } }
.float-card {
  position: absolute; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 22px; font-weight: 700;
  box-shadow: var(--shadow); animation: floaty 6s ease-in-out infinite;
}
.float-card small { color: var(--green); font-weight: 500; }
.float-card.f1 { top: 6%; left: 4%; animation-delay: 0s; }
.float-card.f2 { top: 42%; right: 2%; animation-delay: 1.5s; }
.float-card.f3 { bottom: 8%; left: 18%; animation-delay: 3s; }
@keyframes floaty { 50% { transform: translateY(-12px); } }

/* ---- 通用 Section ---- */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; margin-bottom: 36px; }
.section-head h2 { font-size: 30px; font-weight: 800; }
.section-head p { color: var(--text-dim); margin-top: 6px; }

/* ---- 分类 ---- */
.category-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 16px; }
.category-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px 18px; text-align: center;
  cursor: pointer; transition: all 0.25s;
}
.category-card:hover { transform: translateY(-4px); border-color: var(--accent); background: var(--card-hover); }
.category-card .icon { font-size: 34px; }
.category-card h3 { font-size: 16px; margin: 10px 0 4px; }
.category-card p { font-size: 12px; color: var(--text-dim); }

/* ---- 游戏网格 ---- */
.game-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.game-card {
  position: relative; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 16px; text-align: center;
  cursor: pointer; transition: all 0.25s;
}
.game-card:hover { transform: translateY(-4px); border-color: var(--accent); background: var(--card-hover); }
.game-card .icon { font-size: 40px; display: block; margin-bottom: 8px; }
.game-card h3 { font-size: 15px; }
.game-card small { color: var(--text-dim); font-size: 12px; }
.hot-tag {
  position: absolute; top: 10px; right: 10px;
  background: var(--red); color: #fff; font-size: 10px;
  border-radius: 999px; padding: 2px 8px; font-weight: 700;
}

/* ---- 筛选栏 ---- */
.filter-bar { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.filter-bar select, .price-range input {
  background: var(--card); border: 1px solid var(--border);
  color: var(--text); border-radius: 10px; padding: 9px 12px; font-size: 14px; outline: none;
}
.filter-bar select:focus, .price-range input:focus { border-color: var(--accent); }
.price-range { display: flex; align-items: center; gap: 8px; }
.price-range input { width: 100px; }
.chips { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 22px; }
.chip {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 999px; padding: 7px 16px; font-size: 13px;
  color: var(--text-dim); cursor: pointer; transition: all 0.2s;
}
.chip:hover { color: var(--text); border-color: var(--accent); }
.chip.active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 700; }

/* ---- 商品卡片 ---- */
.offer-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; }
.loading { grid-column: 1/-1; text-align: center; color: var(--text-dim); padding: 60px 0; }
.offer-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; display: flex; flex-direction: column; gap: 12px;
  transition: all 0.25s;
}
.offer-card:hover { transform: translateY(-4px); border-color: var(--accent); background: var(--card-hover); }
.offer-meta { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  font-size: 11px; border-radius: 6px; padding: 2px 8px;
  background: rgba(255, 255, 255, 0.06); color: var(--text-dim);
}
.tag.verified { background: rgba(52, 211, 153, 0.15); color: var(--green); }
.tag.fast { background: rgba(255, 214, 10, 0.15); color: var(--accent); }
.offer-title { font-size: 15px; font-weight: 700; line-height: 1.45; flex: 1; }
.offer-seller { font-size: 13px; color: var(--text-dim); display: flex; align-items: center; gap: 6px; }
.rating { color: var(--accent); font-weight: 700; }
.offer-bottom { display: flex; align-items: center; justify-content: space-between; }
.price { font-size: 22px; font-weight: 800; color: var(--accent); }
.price .old { font-size: 13px; color: var(--text-dim); text-decoration: line-through; font-weight: 400; margin-left: 6px; }
.price .unit { font-size: 12px; color: var(--text-dim); font-weight: 400; }

/* ---- 步骤 ---- */
.steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.step {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px 22px;
}
.step-num { font-size: 30px; font-weight: 800; color: rgba(255, 214, 10, 0.35); }
.step h3 { margin: 8px 0 6px; font-size: 17px; }
.step p { color: var(--text-dim); font-size: 14px; }

/* ---- 卖家横幅 ---- */
.seller-banner {
  background: linear-gradient(120deg, #1c1703, #2e2503);
  border: 1px solid rgba(255, 214, 10, 0.3);
  border-radius: 18px; padding: 44px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.seller-banner h2 { font-size: 26px; margin-bottom: 8px; }
.seller-banner p { color: var(--text-dim); }

/* ---- 页脚 ---- */
.footer { background: var(--bg-alt); border-top: 1px solid var(--border); padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 36px; }
.footer-brand p { color: var(--text-dim); font-size: 13px; margin-top: 10px; max-width: 300px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h4 { font-size: 14px; margin-bottom: 4px; }
.footer-col a { color: var(--text-dim); font-size: 13px; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  border-top: 1px solid var(--border); padding-top: 20px;
  color: var(--text-dim); font-size: 12px;
}

/* ---- 弹窗 ---- */
.modal-mask {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0, 0, 0, 0.65); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; padding: 30px; width: 100%; max-width: 400px;
  position: relative; box-shadow: var(--shadow);
  animation: modalIn 0.25s ease;
}
@keyframes modalIn { from { transform: translateY(20px); opacity: 0; } }
.modal-close { position: absolute; top: 14px; right: 14px; background: none; border: none; color: var(--text-dim); font-size: 16px; }
.modal-close:hover { color: var(--text); }
.modal-tabs { display: flex; gap: 8px; margin-bottom: 22px; }
.tab {
  flex: 1; background: none; border: 1px solid var(--border);
  color: var(--text-dim); border-radius: 10px; padding: 9px; font-size: 14px; font-weight: 600;
}
.tab.active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.modal form label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 14px; }
.modal form input {
  width: 100%; margin-top: 6px; background: var(--bg-alt);
  border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 11px 14px; font-size: 14px; outline: none;
}
.modal form input:focus { border-color: var(--accent); }
.form-error { background: rgba(248, 113, 113, 0.12); color: var(--red); border-radius: 10px; padding: 10px 14px; font-size: 13px; margin-bottom: 14px; }
.modal-tip { text-align: center; font-size: 12px; color: var(--text-dim); margin-top: 16px; }
.modal-tip a { color: var(--accent); }

/* ---- Toast ---- */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: var(--card); border: 1px solid var(--accent);
  color: var(--text); padding: 13px 24px; border-radius: 12px;
  font-size: 14px; box-shadow: var(--shadow); z-index: 300;
  opacity: 0; transition: all 0.3s ease; pointer-events: none; max-width: 90vw;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ---- 响应式 ---- */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .nav-links, .nav-search { display: none; }
  .nav-auth { margin-left: auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .seller-banner { padding: 28px; }
}
@media (max-width: 560px) {
  .nav-auth .btn-ghost { display: none; }
  .hero { padding: 40px 0; }
  .hero-stats { gap: 16px; }
  .stat strong { font-size: 18px; }
  .hero-cta .btn { width: 100%; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; }
}