:root {
  --bg: #0f0f1a;
  --surface: #1a1a2e;
  --surface2: #222240;
  --text: #e0e0e0;
  --text2: #a0a0b8;
  --accent: #7c4dff;
  --accent2: #b388ff;
  --green: #2ecc71;
  --border: #2a2a45;
  --card-bg: #1e1e35;
  --card-hover: #282850;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

#particles {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
}

/* ===== 头部 ===== */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15,15,26,0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex; align-items: center; gap: 20px;
  height: 64px;
}
.header-left { display: flex; align-items: baseline; gap: 14px; }
.logo {
  font-size: 1.35rem; font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  white-space: nowrap;
}
.logo span { font-weight: 400; }
.logo-sub {
  font-size: 0.75rem; color: var(--text2);
  border-left: 1px solid var(--border); padding-left: 14px;
  white-space: nowrap;
}
.search-box { flex: 1; max-width: 420px; position: relative; margin-left: auto; }
.search-box input {
  width: 100%; padding: 9px 16px 9px 40px;
  border-radius: 22px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text);
  font-size: 0.92rem; outline: none; transition: all 0.25s;
}
.search-box input:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124,77,255,0.15);
}
.search-box .search-icon {
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
  font-size: 0.9rem; color: var(--text2); pointer-events: none;
}
.header-stats {
  margin-left: 12px; font-size: 0.82rem; color: var(--text2); white-space: nowrap;
}

/* ===== 布局 ===== */
.app-container { display: flex; position: relative; z-index: 1; min-height: calc(100vh - 64px); }

/* ===== 侧边栏 ===== */
.sidebar {
  width: 210px; min-width: 210px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 16px 0; display: flex; flex-direction: column;
}
.sidebar-title {
  font-size: 0.66rem; text-transform: uppercase; letter-spacing: 2px;
  color: var(--text2); padding: 0 18px; margin-bottom: 8px;
}
.platform-item {
  display: flex; align-items: center; gap: 9px;
  padding: 10px 18px; cursor: pointer; font-size: 0.88rem;
  color: var(--text2); transition: all 0.2s;
  border-left: 3px solid transparent; user-select: none;
}
.platform-item:hover { background: var(--surface2); color: var(--text); }
.platform-item.active {
  background: rgba(124,77,255,0.08); color: var(--accent2);
  border-left-color: var(--accent);
}
.platform-item .plat-icon { font-size: 1.15rem; width: 26px; text-align: center; }
.platform-item .plat-badge {
  margin-left: auto; font-size: 0.66rem; background: var(--surface2);
  padding: 2px 8px; border-radius: 8px; color: var(--text2);
}
.platform-item.active .plat-badge { background: rgba(124,77,255,0.2); color: var(--accent2); }
.sidebar-footer {
  margin-top: auto; padding: 16px 18px; border-top: 1px solid var(--border);
  display: flex; gap: 24px;
}
.side-stat { display: flex; flex-direction: column; }
.side-stat span {
  font-size: 1.3rem; font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.side-stat label { font-size: 0.7rem; color: var(--text2); margin-top: 2px; }

/* ===== 主内容 ===== */
.main-content { flex: 1; padding: 24px; overflow-x: hidden; }
.platform-header {
  display: flex; align-items: center; gap: 12px; margin-bottom: 22px;
}
.platform-header .plat-icon-large { font-size: 2rem; }
.platform-header h2 { font-size: 1.5rem; font-weight: 700; }
.platform-header .game-count { color: var(--text2); font-size: 0.88rem; }

/* ===== 游戏卡带 ===== */
.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(185px, 1fr));
  gap: 18px;
}

/* ---- 卡带本体：实体卡带外壳 ---- */
.game-card {
  --plastic-hi: #2f3641;
  --plastic-mid: #262d37;
  --plastic-lo: #20262f;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 8px 9px 6px;
  cursor: pointer;
  user-select: none;
  /* 右上角高光 + 哑光塑料渐变 */
  background:
    radial-gradient(120% 130% at 100% 0, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0) 38%),
    linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 28px),
    linear-gradient(165deg, var(--plastic-hi) 0%, var(--plastic-mid) 45%, var(--plastic-lo) 100%);
  /* 右上角 SD 卡式斜切缺角 */
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
  filter: drop-shadow(0 3px 5px rgba(0,0,0,0.35));
  transition: transform 200ms ease, filter 200ms ease;
}
/* 塑料壳 1px 高光边缘 */
.game-card::before {
  content: '';
  position: absolute;
  inset: 0;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.09), inset 0 0 0 1px rgba(255,255,255,0.02);
  pointer-events: none;
}

/* ---- Hover：轻轻拿起卡带 ---- */
.game-card:hover {
  transform: translateY(-4px);
  filter: drop-shadow(0 10px 16px rgba(0,0,0,0.42));
}
.game-card:hover .card-cover img { filter: brightness(1.04); }
.game-card:hover .cart-badge { filter: brightness(1.08); }
.game-card:active { transform: translateY(-1px); }

/* ---- 顶部铭牌 ---- */
.cart-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px 7px 2px; /* 右侧留出斜切角安全区 */
}
.cart-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #fff;
  text-transform: uppercase;
  background: var(--accent);
  padding: 2px 6px 1px;
  border-radius: 2px;
  line-height: 1.2;
  transition: filter 200ms ease;
}
.cart-size {
  font-size: 11px;
  font-weight: 500;
  color: var(--text2);
  letter-spacing: 0.2px;
}

/* ---- 封面标签区（印刷在卡带上的 Label） ---- */
.card-cover {
  position: relative;
  height: 138px;
  margin: 0 0 9px;
  border-radius: 3px;
  overflow: hidden;
  background: #171b21;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05), 0 1px 3px rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 2px;
  transition: filter 200ms ease;
}
.card-cover .cover-emoji {
  font-size: 2.7rem;
  color: rgba(255,255,255,0.35);
  filter: none;
}

/* ---- 信息区 ---- */
.card-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0 2px 2px;
  flex: 1;
}
.card-title {
  font-size: 0.79rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.2em;
  word-break: break-word;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text2);
}
.meta-info { font-weight: 500; letter-spacing: 0.2px; }

/* ---- 下载按钮（嵌入卡带底部） ---- */
.download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 32px;
  margin-top: auto;
  background: rgba(255,255,255,0.045);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 3px;
  color: #ccd3dc;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-decoration: none;
  transition: background 180ms ease, border-color 180ms ease, filter 180ms ease, color 180ms ease;
}
.download-btn:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(124,77,255,0.35);
  color: #fff;
  filter: brightness(1.05);
}
.download-btn:active { filter: brightness(0.94); }
.download-btn .btn-icon { font-size: 0.9rem; }

/* ---- 工业细节：侧面凹槽 + 底部压槽 ---- */
.cart-notch {
  position: absolute;
  top: 38%;
  width: 3px;
  height: 30px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, rgba(0,0,0,0.28), transparent);
  pointer-events: none;
  z-index: 2;
}
.cart-notch.left { left: 2px; }
.cart-notch.right { right: 2px; }
.cart-groove {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 1px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, rgba(0,0,0,0.32) 18%, rgba(0,0,0,0.32) 82%, transparent);
  pointer-events: none;
  z-index: 2;
}


/* ===== 空状态 ===== */
.empty-state { text-align: center; padding: 80px 20px; color: var(--text2); }
.empty-state .empty-icon { font-size: 4rem; margin-bottom: 16px; }

/* ===== Toast ===== */
.toast-container {
  position: fixed; bottom: 20px; right: 20px; z-index: 9999;
  display: flex; flex-direction: column-reverse; gap: 8px;
}
.toast {
  background: var(--surface2); color: var(--text);
  padding: 10px 18px; border-radius: var(--radius-sm);
  font-size: 0.85rem; box-shadow: var(--shadow);
  border-left: 3px solid var(--green); animation: slideIn 0.3s ease;
  max-width: 380px;
}
@keyframes slideIn { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .header { padding: 0 12px; gap: 10px; height: 56px; flex-wrap: wrap; }
  .logo-sub { display: none; }
  .search-box { order: 3; max-width: 100%; flex-basis: 100%; }
  .sidebar {
    position: fixed; left: 0; top: 0; z-index: 99; height: 100vh;
    transform: translateX(-100%); transition: transform 0.3s;
    box-shadow: var(--shadow);
  }
  .sidebar.open { transform: translateX(0); }
  .game-grid { grid-template-columns: repeat(auto-fill, minmax(145px, 1fr)); gap: 12px; }
  .card-cover { height: 112px; }
  .cart-badge { font-size: 9px; }
  .main-content { padding: 12px; }
}