/* ======================================
   全局基础样式（和Bootstrap兼容）
====================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    background: linear-gradient(135deg, #f0f4f8 0%, #e6edf7 100%);
    font-family: "Microsoft Yahei", "PingFang SC", sans-serif;
    min-height: 100vh;
    color: #1e293b;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* ======================================
   顶部导航栏
====================================== */
.top-navbar {
    background: linear-gradient(135deg, #1a73e8 0%, #7c3aed 100%);
    padding: 10px 0;
    box-shadow: 0 2px 12px rgba(26, 115, 232, 0.2);
}

.top-navbar .navbar-brand {
    color: #fff;
    font-size: 1.2rem;
}

.top-navbar .navbar-brand .text-primary {
    color: #ffd54f !important;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #fff;
}

.user-nickname {
    font-weight: 600;
    font-size: 0.95rem;
}

.user-coin {
    background: rgba(255, 255, 255, 0.2);
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-left: 8px;
}

.coin-icon {
    color: #ffd54f;
    font-size: 0.7rem;
    margin-right: 2px;
}

.btn-outline-light {
    border-color: rgba(255, 255, 255, 0.7);
    color: #fff;
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: #fff;
    color: #fff;
}

.btn-light {
    background: #fff;
    color: #1a73e8;
    border: none;
}

.btn-light:hover {
    background: #f0f4f8;
    color: #1557b0;
}

/* ======================================
   头部标题美化
====================================== */
.header {
    padding: 50px 0 30px;
    text-align: center;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, #1a73e8, #7c3aed);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 10px;
}

.header p {
    color: #64748b;
    font-size: 1.1rem;
}

/* ======================================
   用户数据面板（登录后显示）
====================================== */
.user-dashboard {
    max-width: 600px;
    margin: 0 auto;
}

.dashboard-card {
    background: #fff;
    border-radius: 12px;
    padding: 14px 20px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    min-width: 100px;
}

.dashboard-label {
    font-size: 0.75rem;
    color: #94a3b8;
    margin-bottom: 4px;
}

.dashboard-value {
    font-size: 1.3rem;
    font-weight: 700;
}

.game-summary {
    max-width: 700px;
    margin: 0 auto;
}

.game-summary small {
    display: inline-block;
    background: #f8fafc;
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 0.8rem;
}

/* ======================================
   登录/注册表单
====================================== */
.auth-box {
    max-width: 420px;
    margin: 60px auto;
    padding: 40px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.auth-box h2 {
    color: #1e293b;
    font-weight: 600;
}

.auth-box .form-label {
    color: #64748b;
    font-weight: 500;
}

.auth-box .form-control {
    border-radius: 10px;
    padding: 10px 14px;
    border: 1px solid #e2e8f0;
}

.auth-box .form-control:focus {
    border-color: #1a73e8;
    box-shadow: 0 0 0 0.2rem rgba(26, 115, 232, 0.15);
}

.auth-box .btn-primary {
    padding: 12px;
    font-size: 1rem;
}

/* ======================================
   占位页面（开发中）
====================================== */
.placeholder-box {
    margin: 40px auto;
    max-width: 400px;
    padding: 50px 30px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.placeholder-icon {
    font-size: 4rem;
    line-height: 1;
}

/* ======================================
   游戏卡片核心美化 + 淡入动画
====================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.game-card {
    height: 100%;
    border-radius: 16px;
    border: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    background: #ffffff;
    overflow: hidden;
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.game-card:nth-child(1) { animation-delay: 0.1s; }
.game-card:nth-child(2) { animation-delay: 0.2s; }
.game-card:nth-child(3) { animation-delay: 0.3s; }
.game-card:nth-child(4) { animation-delay: 0.4s; }
.game-card:nth-child(5) { animation-delay: 0.5s; }
.game-card:nth-child(6) { animation-delay: 0.6s; }
.game-card:nth-child(7) { animation-delay: 0.7s; }

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(26, 115, 232, 0.15);
    border-color: rgba(26, 115, 232, 0.3);
}

.card-body {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.card-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 12px;
}

.card-text {
    color: #64748b;
    line-height: 1.7;
    font-size: 0.95rem;
    margin-bottom: 20px;
}

/* ======================================
   按钮美化
====================================== */
.btn-primary {
    background: linear-gradient(135deg, #1a73e8 0%, #4285f4 100%);
    border: none;
    border-radius: 10px;
    padding: 10px 24px;
    font-weight: 500;
    color: white;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.2);
    transform: scale(1);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1557b0 0%, #3367d6 100%);
    transform: scale(1.03);
    box-shadow: 0 6px 20px rgba(26, 115, 232, 0.3);
    color: white;
}

/* ======================================
   页脚美化
====================================== */
.footer {
    margin-top: 80px;
    padding: 30px 0;
    color: #64748b;
    font-size: 0.9rem;
    border-top: 1px solid rgba(226, 232, 240, 0.8);
    text-align: center;
}

.footer a {
    color: #1a73e8;
    text-decoration: none;
}

.footer a:hover {
    color: #1557b0;
    text-decoration: underline;
}

/* ======================================
   响应式适配
====================================== */
@media (max-width: 991px) {
    .header h1 {
        font-size: 2.2rem;
    }
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 1.8rem;
    }
    .game-card {
        margin-bottom: 20px;
    }
    .btn-primary {
        width: 100%;
    }
    .header {
        padding: 30px 0 20px;
    }
    .footer {
        margin-top: 40px;
    }
    .auth-box {
        margin: 30px 15px;
        padding: 24px;
    }
    .dashboard-card {
        min-width: 80px;
        padding: 10px 14px;
    }
    .dashboard-value {
        font-size: 1.1rem;
    }
}