/* AI游乐场 - 通用样式 */
* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

:root {
    --primary: #ff0055;
    --secondary: #ff6600;
    --accent: #00ff88;
    --bg-dark: #0a0a0f;
    --bg-card: rgba(255, 255, 255, 0.03);
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --border: rgba(255, 255, 255, 0.1);
}

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

.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.bg-animation::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 0, 85, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, rgba(0, 255, 136, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 40% 40%, rgba(255, 102, 0, 0.05) 0%, transparent 50%);
    animation: bgMove 20s ease-in-out infinite;
}

@keyframes bgMove {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(2%, 3%); }
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.container { max-width: 1200px; margin: 0 auto; padding: 20px; }

/* 导航栏 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links { display: flex; gap: 10px; align-items: center; }

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 8px 14px;
    border-radius: 8px;
    transition: all 0.2s;
}

.nav-link:hover { color: var(--text-primary); background: var(--bg-card); }

.user-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: linear-gradient(135deg, rgba(255, 0, 85, 0.2), rgba(255, 102, 0, 0.2));
    border-radius: 20px;
    font-size: 0.85rem;
}

.user-badge .avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
}

/* 卡片 */
.app-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.03));
    opacity: 0;
    transition: opacity 0.3s;
}

.app-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 40px rgba(255, 0, 85, 0.2);
}

.app-card:hover::before { opacity: 1; }

.app-card .card-icon { font-size: 3rem; margin-bottom: 15px; }
.app-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
.app-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; }

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 0, 85, 0.4);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover { background: rgba(255, 255, 255, 0.1); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* 输入框 */
.input-group { margin-bottom: 15px; }
.input-group label { display: block; margin-bottom: 8px; font-size: 0.9rem; color: var(--text-secondary); }

.input-field {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary);
}

.input-field::placeholder { color: var(--text-secondary); }

/* 加载动画 */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    gap: 15px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.error-msg {
    background: rgba(255, 0, 85, 0.1);
    border: 1px solid rgba(255, 0, 85, 0.3);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    color: #ff6688;
}

/* 排行榜样式 */
.ranking-item .rank-badge {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
}

/* 响应式 */
@media (max-width: 768px) {
    .navbar { padding: 12px 15px; }
    .nav-brand span:last-child { display: none; }
    .nav-link { padding: 6px 10px; font-size: 0.8rem; }
    .container { padding: 15px; }
    .app-card { padding: 20px; }
}

/* 游戏卡片网格 */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

/* Modal 通用 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 30px;
    max-width: 90%;
    width: 400px;
    text-align: center;
}