/* ============ 全局与变量 ============ */
:root {
    --bg: #0d0a1a;
    --card: #1e1740;
    --gold: #f0c040;
    --gold-dark: #d4a020;
    --green: #4ade80;
    --red: #f87171;
    --blue: #60a5fa;
    --text: #f0e8ff;
    --text-dim: #a090c0;
    --border: #3a2a60;
    --shadow: 0 8px 30px rgba(0,0,0,0.5);
    --radius: 16px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    background-image: radial-gradient(circle at 20% 20%, #2a1545 0%, transparent 50%),
                      radial-gradient(circle at 80% 80%, #1a0f30 0%, transparent 50%);
    overflow-x: hidden;
    overscroll-behavior: none;
    touch-action: manipulation;
}

/* 导航栏 */
.navbar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 15px; background: rgba(13,10,26,0.95);
    border-bottom: 2px solid var(--gold); backdrop-filter: blur(10px);
    position: sticky; top:0; z-index:100; flex-wrap:wrap; gap:8px;
}
.logo { font-size:1.5rem; font-weight:800; color:var(--gold); text-shadow:0 0 20px rgba(240,192,64,0.5); }
.nav-right { display:flex; gap:10px; align-items:center; flex-wrap:wrap; }
.lang-select {
    padding: 8px 12px;
    border-radius: 20px;
    background: rgba(255,255,255,0.05);
    color: var(--text);
    border: 1px solid var(--border);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.3s;
    outline: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23f0c040' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 14px;
    padding-right: 35px;
}
.lang-select:hover { border-color: var(--gold); color: var(--gold); }
.lang-select:focus { border-color: var(--gold); box-shadow: 0 0 10px rgba(240,192,64,0.3); }

#authArea { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.auth-btn { padding: 7px 16px; border-radius: 20px; cursor: pointer; font-weight: 600; font-size: 0.85rem; transition: all 0.3s; border: 1px solid transparent; }
.auth-btn.login { background: transparent; color: var(--text); border-color: var(--border); }
.auth-btn.login:hover { border-color: var(--gold); color: var(--gold); }
.auth-btn.register { background: linear-gradient(135deg, var(--gold), var(--gold-dark)); color: #000; border: none; box-shadow: 0 2px 10px rgba(240,192,64,0.3); }
.auth-btn.register:hover { box-shadow: 0 4px 20px rgba(240,192,64,0.5); transform: translateY(-1px); }
.auth-btn.logout { background: var(--red); color: #fff; }
.user-badge { display: flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.05); padding: 5px 14px; border-radius: 20px; border: 1px solid var(--border); font-size: 0.85rem; }
.user-badge .balance { color: var(--gold); font-weight: 700; }

/* 主布局 */
.main-container { display:flex; gap:16px; padding:15px; max-width:1200px; margin:0 auto; flex-wrap:wrap; }
.game-section { flex:1.5; min-width:300px; }
.side-panel { flex:1; min-width:260px; display:flex; flex-direction:column; gap:12px; }

/* 游戏卡片 */
.game-card {
    background: var(--card); border-radius: var(--radius); border:2px solid var(--gold);
    box-shadow: var(--shadow); overflow:hidden; position:relative;
    min-height: 380px;
    display: flex; align-items: center; justify-content: center;
}
#gameArea {
    width:100%; height:100%; position:relative;
    background: linear-gradient(180deg, #ff8c42 0%, #ffd166 30%, #e07a5f 60%, #1a0f30 100%);
    padding: 20px;
    overflow: hidden;
}
.game-overlay {
    position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center;
    background:rgba(0,0,0,0.7); backdrop-filter:blur(4px); color:#fff; text-align:center; z-index:20;
}
.game-overlay h2 { font-size:2rem; margin-bottom:10px; text-shadow:0 0 20px rgba(0,0,0,0.8); }
.game-overlay p { font-size:1rem; margin-bottom:20px; color:#ccc; }
.play-btn { padding:12px 30px; font-size:1.2rem; font-weight:800; border:none; border-radius:30px; background:var(--gold); color:#000; cursor:pointer; box-shadow:0 0 30px rgba(240,192,64,0.5); transition:all 0.3s; }
.play-btn:hover { background:var(--gold-dark); transform:translateY(-2px); box-shadow:0 0 40px rgba(240,192,64,0.7); }

/* 卡片网格 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    perspective: 1000px;
}
.memory-card {
    aspect-ratio: 1;
    cursor: pointer;
    position: relative;
    transition: transform 0.3s;
}
.memory-card.flipped { transform: rotateY(180deg); }
.memory-card.matched { opacity: 0.6; cursor: default; }
.card-inner {
    position: relative; width: 100%; height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.5s;
}
.memory-card.flipped .card-inner { transform: rotateY(180deg); }
.card-front, .card-back {
    position: absolute; width: 100%; height: 100%;
    backface-visibility: hidden;
    display: flex; align-items: center; justify-content: center;
    border-radius: 8px;
    font-size: 1.5rem;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}
.card-front { background: #f0e8ff; transform: rotateY(180deg); }
.card-back { background: linear-gradient(135deg, #c49a2a, #8b6914); color: #fff; font-weight: bold; }

/* 规则卡片 */
.rules-card { background: var(--card); border:1px solid var(--border); border-radius:12px; padding:12px 15px; margin-top:10px; box-shadow:var(--shadow); }
.rules-title { font-size:1rem; font-weight:700; color:var(--gold); margin-bottom:8px; display:flex; align-items:center; gap:6px; }
.rules-content p { font-size:0.8rem; color:var(--text); margin-bottom:4px; line-height:1.5; }
.rules-content strong { color:var(--gold); }

/* 分数栏 */
.score-bar { display:flex; justify-content:space-between; margin-top:10px; padding:10px 15px; background:var(--card); border-radius:10px; border:1px solid var(--border); font-weight:600; flex-wrap:wrap; gap:6px; }
.score-bar span { font-size:0.9rem; }

/* 滚动信息栏 */
.ticker-wrap { background:var(--card); border-radius:var(--radius); border:1px solid var(--border); padding:10px 15px; overflow:hidden; box-shadow:var(--shadow); }
.ticker-label { font-size:0.8rem; color:var(--text-dim); display:flex; align-items:center; gap:8px; text-transform:uppercase; letter-spacing:1px; }
.pulse { width:8px; height:8px; border-radius:50%; background:var(--green); animation:pulse 1.2s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1);} 50%{opacity:0.5;transform:scale(1.5);} }
.ticker { display:flex; gap:30px; white-space:nowrap; animation:scrollTicker 20s linear infinite; font-size:0.85rem; }
@keyframes scrollTicker { 0%{transform:translateX(0);} 100%{transform:translateX(-50%);} }
.ticker-item { display:inline-flex; gap:6px; }
.ticker-item .t-name { color:var(--text-dim); }
.ticker-item .t-amount { color:var(--gold); font-weight:700; }

/* 卡片与选项卡 */
.card { background:var(--card); border-radius:var(--radius); border:1px solid var(--border); padding:15px; box-shadow:var(--shadow); }
.tabs { display:flex; gap:8px; margin-bottom:15px; flex-wrap:wrap; }
.tab-btn { padding:7px 14px; border-radius:20px; background:transparent; border:1px solid var(--border); color:var(--text-dim); cursor:pointer; font-weight:600; transition:all 0.3s; font-size:0.85rem; }
.tab-btn:hover, .tab-btn.active { background:var(--gold); color:#000; border-color:var(--gold); }
.tab-content { display:none; }
.tab-content.active { display:block; }

/* 奖励网格 */
.reward-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(120px,1fr)); gap:8px; }
.reward-item { background:rgba(255,255,255,0.03); border:1px solid var(--border); border-radius:10px; padding:10px; text-align:center; transition:all 0.3s; cursor:pointer; }
.reward-item:hover { border-color:var(--gold); transform:translateY(-2px); }
.reward-item.claimed { opacity:0.5; border-color:var(--green); cursor:not-allowed; }
.reward-item.available { border-color:var(--gold); background:rgba(240,192,64,0.08); }
.reward-item .tier-score { font-size:1.2rem; font-weight:800; }
.reward-item .tier-amount { color:var(--gold); font-weight:700; margin:4px 0; font-size:0.9rem; }
.claim-btn { padding:5px 10px; border-radius:12px; border:none; background:var(--gold); color:#000; cursor:pointer; font-weight:600; transition:all 0.3s; font-size:0.8rem; }
.claim-btn:disabled { background:var(--border); color:var(--text-dim); cursor:not-allowed; }
.claim-btn:hover:not(:disabled) { background:var(--gold-dark); }

/* 排行榜 */
#leaderboardList { max-height:300px; overflow-y:auto; }
.lb-item { display:flex; align-items:center; padding:8px 10px; border-bottom:1px solid rgba(255,255,255,0.05); gap:10px; border-radius:6px; font-size:0.9rem; }
.lb-item:hover { background:rgba(255,255,255,0.03); }
.lb-item .rank { width:26px; height:26px; border-radius:50%; display:flex; align-items:center; justify-content:center; font-weight:800; background:var(--border); font-size:0.8rem; }
.lb-item .rank.top1 { background:#fbbf24; color:#000; }
.lb-item .rank.top2 { background:#d1d5db; color:#000; }
.lb-item .rank.top3 { background:#d97706; color:#000; }
.lb-item .lb-name { flex:1; font-weight:600; }
.lb-item .lb-score { color:var(--gold); font-weight:700; }

/* 表单 */
input, select, textarea {
    width:100%; padding:12px; border-radius:8px; border:1px solid var(--border);
    background:rgba(255,255,255,0.05); color:var(--text); font-size:0.9rem;
    outline:none; transition:all 0.3s; margin-bottom:10px;
    font-family: inherit;
}
input:focus, textarea:focus { border-color:var(--gold); box-shadow:0 0 0 3px rgba(240,192,64,0.15); }
.btn-primary, .btn-secondary { width:100%; padding:12px; border-radius:8px; border:none; cursor:pointer; font-weight:700; transition:all 0.3s; font-size:0.9rem; }
.btn-primary { background:var(--gold); color:#000; }
.btn-primary:hover { background:var(--gold-dark); }
.btn-secondary { background:transparent; color:var(--gold); border:1px solid var(--gold); }
.btn-secondary:hover { background:var(--gold); color:#000; }

/* 邀请区块 */
#inviteBox { background:rgba(240,192,64,0.06); border:1px dashed var(--gold); border-radius:8px; padding:12px; margin-top:8px; }
.invite-link { word-break:break-all; color:var(--blue); background:rgba(0,0,0,0.3); padding:8px; border-radius:6px; margin:6px 0; font-size:0.8rem; }

/* 模态框 */
.modal { display:none; position:fixed; inset:0; background:rgba(0,0,0,0.7); backdrop-filter:blur(6px); z-index:200; align-items:center; justify-content:center; }
.modal.show { display:flex; }
.modal-content { background:var(--card); border:1px solid var(--border); border-radius:var(--radius); padding:25px; width:90%; max-width:400px; box-shadow:0 20px 60px rgba(0,0,0,0.6); position:relative; }
.close { position:absolute; top:10px; right:15px; font-size:1.5rem; cursor:pointer; color:var(--text-dim); }
.close:hover { color:var(--text); }

/* Toast */
#toastContainer { position:fixed; top:70px; right:20px; z-index:300; display:flex; flex-direction:column; gap:8px; }
.toast { padding:12px 20px; border-radius:8px; background:var(--card); border:1px solid var(--border); color:var(--text); font-weight:600; box-shadow:0 8px 30px rgba(0,0,0,0.5); animation:toastIn 0.3s ease; max-width:320px; }
.toast.success { border-color:var(--green); color:var(--green); }
.toast.error { border-color:var(--red); color:var(--red); }
.toast.gold { border-color:var(--gold); color:var(--gold); }
@keyframes toastIn { from{transform:translateX(40px);opacity:0;} to{transform:translateX(0);opacity:1;} }

/* 响应式 */
@media (max-width:768px) {
    .main-container { flex-direction:column; padding:10px; gap:10px; }
    .game-section, .side-panel { width:100%; }
    .game-card { min-height:300px; border-radius:12px; }
    .card-grid { gap: 6px; }
    .card-front, .card-back { font-size: 1.2rem; }
    .navbar { padding:10px; }
    .logo { font-size:1.3rem; }
    .play-btn { padding:10px 25px; font-size:1rem; }
    .lang-select { width: auto; max-width: 160px; }
}

/* ========== 客服浮动按钮 ========== */
.support-float-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: #000;
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(240, 192, 64, 0.5);
    z-index: 999;
    transition: all 0.3s;
    user-select: none;
}
.support-float-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(240, 192, 64, 0.7);
}

/* ========== 客服窗口 ========== */
.support-window {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 340px;
    max-width: calc(100vw - 40px);
    background: var(--card);
    border: 2px solid var(--gold);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    z-index: 998;
    display: none;
    overflow: hidden;
    animation: supportIn 0.3s ease;
}
.support-window.show { display: block; }
@keyframes supportIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.support-header {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: #000;
    padding: 14px 18px;
    font-weight: 700;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
}
.support-close {
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    transition: all 0.3s;
}
.support-close:hover { transform: rotate(90deg); }
.support-body { padding: 18px; max-height: 70vh; overflow-y: auto; }
.support-contacts { margin-bottom: 18px; }
.support-contacts p { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 10px; }
.support-link {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 14px; margin-bottom: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border); border-radius: 8px;
    color: var(--text); text-decoration: none;
    font-weight: 600; font-size: 0.9rem;
    transition: all 0.3s;
}
.support-link:hover { border-color: var(--gold); background: rgba(240, 192, 64, 0.1); color: var(--gold); }
.support-form p { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 10px; }

@media (max-width: 768px) {
    .support-float-btn { bottom: 20px; right: 20px; width: 55px; height: 55px; font-size: 24px; }
    .support-window { bottom: 85px; right: 20px; left: 20px; width: auto; }
}