/* ═══════════════════════════════════════════════════════════════
   Empyrion 游戏服务网站 — 统一主题样式
   所有颜色使用 CSS 变量（themes.css 定义），双主题自动切换
   设计: Apple Design 材质与排版体系
   ═══════════════════════════════════════════════════════════════ */

/* ── 基础重置 ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    font-optical-sizing: auto;
    background: var(--bg-canvas);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    color: var(--accent-hover);
}

/* ── 侧边栏 ── */
.sidebar {
    background: var(--bg-panel);
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
    border-right: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 210px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.sidebar-brand {
    display: block;
    padding: 16px 16px 12px;
    font-size: 16px;
    font-weight: 700;
    color: var(--accent);
    white-space: nowrap;
    letter-spacing: -0.015em;
    border-bottom: 1px solid var(--border-subtle);
    flex-shrink: 0;
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 8px;
    gap: 2px;
    overflow-y: auto;
}

.nav-link {
    display: block;
    padding: 10px 12px;
    font-size: 13px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: background .15s, color .15s, border-color .15s;
    white-space: nowrap;
    border-left: 2px solid transparent;
}

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

.nav-link.active {
    background: var(--bg-hover);
    color: var(--accent);
    border-left-color: var(--accent);
}

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    flex-shrink: 0;
    flex-wrap: wrap;
}

.sidebar-footer .username {
    color: var(--accent);
    font-weight: 600;
}

.sidebar-footer .btn-sm {
    padding: 5px 12px;
    font-size: 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-standard);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background .15s, color .15s, border-color .15s;
    white-space: nowrap;
}

.sidebar-footer .btn-sm:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.sidebar-footer .btn-sm:active { transform: scale(0.97); transition: none; }

.sidebar-footer .btn-sm.primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    font-weight: 600;
}

.sidebar-footer .btn-sm.primary:hover {
    background: var(--accent-hover);
}

/* ── 汉堡菜单（移动端） ── */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-secondary);
    border-radius: 1px;
    transition: background .2s;
}

/* ── 主内容区 ── */
.main-content {
    flex: 1;
    padding: 24px 20px;
    max-width: 1200px;
    margin-left: 210px;
    width: calc(100% - 210px);
}

/* ── 卡片 - Apple 材质面板 ── */
.card {
    background: var(--bg-panel);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-standard);
    border-top: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow .25s, border-color .25s, transform .2s;
}
.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border-visible);
    transform: scale(1.003);
}

.card-header {
    font-size: 16px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: var(--tracking-heading);
    line-height: 1.1;
}

/* ── 表单 ── */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 600;
    letter-spacing: var(--tracking-caption);
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-standard);
    background: var(--bg-panel);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-error {
    color: var(--red);
    font-size: 13px;
    margin-top: 4px;
}

/* ── 状态指示器 ── */
.status-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
}

.status-dot.online {
    background: var(--green);
    box-shadow: 0 0 8px rgba(74,222,128,.4);
}

.status-dot.offline {
    background: var(--red);
}

/* ── 统计卡片组 ── */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--bg-panel);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid var(--border-standard);
    border-top: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 16px 12px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100px;
    gap: 10px;
    box-shadow: var(--shadow-xs);
    transition: box-shadow .25s, border-color .25s, transform .2s;
}
.stat-card:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--border-visible);
    transform: scale(1.02) translateY(-1px);
}

.stat-card .stat-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1.1;
    letter-spacing: var(--tracking-heading);
}

.stat-card .stat-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ── 认证页面 ── */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg-canvas);
    background-image: var(--bg-radial);
}

.auth-card {
    background: var(--bg-elevated);
    backdrop-filter: blur(20px) saturate(150%);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
    border: 1px solid var(--border-standard);
    border-top: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 32px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.auth-card h1 {
    font-size: 22px;
    color: var(--accent);
    text-align: center;
    margin-bottom: 24px;
    letter-spacing: var(--tracking-heading);
    line-height: 1.1;
}

.auth-card .alt-link {
    text-align: center;
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-muted);
    letter-spacing: var(--tracking-caption);
}

/* ── 记住账号密码复选框 ── */
.checkbox-group {
    margin-bottom: 4px;
}

.checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
    position: relative;
    padding-left: 28px;
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-label .checkmark {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    border: 1px solid var(--border-standard);
    border-radius: 4px;
    background: var(--bg-panel);
    transition: background .15s, border-color .15s;
}

.checkbox-label:hover .checkmark {
    border-color: var(--accent);
}

.checkbox-label input:checked ~ .checkmark {
    background: var(--accent);
    border-color: var(--accent);
}

.checkbox-label .checkmark::after {
    content: '';
    position: absolute;
    display: none;
    left: 5px;
    top: 2px;
    width: 5px;
    height: 9px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-label input:checked ~ .checkmark::after {
    display: block;
}

/* ── 快捷入口 ── */
.quick-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.quick-link {
    background: var(--bg-panel);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid var(--border-standard);
    border-top: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 20px 16px;
    text-align: center;
    transition: border-color .15s, background .15s, transform .2s, box-shadow .2s;
    display: block;
}

.quick-link:hover {
    border-color: var(--accent);
    background: var(--bg-hover);
    box-shadow: var(--shadow-sm);
    transform: scale(1.02) translateY(-1px);
}

.quick-link .icon {
    font-size: 28px;
    margin-bottom: 8px;
    display: block;
}

.quick-link .label {
    font-size: 13px;
    color: var(--text-primary);
    font-weight: 600;
    letter-spacing: var(--tracking-heading);
}

/* ── 页脚 ── */
.footer {
    text-align: center;
    padding: 16px;
    font-size: 12px;
    color: var(--text-muted);
    flex-shrink: 0;
    letter-spacing: var(--tracking-caption);
    margin-left: 210px;
}

/* ── 滚动条 ── */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-canvas);
}

::-webkit-scrollbar-thumb {
    background: var(--border-visible);
    border-radius: 5px;
    border: 2px solid var(--bg-canvas);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Firefox 滚动条宽度 */
* {
    scrollbar-width: auto;
    scrollbar-color: var(--border-visible) var(--bg-canvas);
}

/* ── 响应式 ── */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: auto;
        width: 100%;
        height: auto;
        flex-direction: column;
        padding: 0 12px;
        min-height: 52px;
    }

    .sidebar-brand {
        padding: 12px 0;
        border-bottom: none;
        flex-shrink: 0;
    }

    .sidebar-nav {
        display: none;
        flex: none;
        padding: 4px 0;
        gap: 2px;
    }

    .sidebar-nav.open {
        display: flex;
        flex-direction: column;
        background: var(--bg-panel);
        border-bottom: 1px solid var(--border-standard);
        padding: 8px;
        margin: 0 -12px;
    }

    .sidebar-footer {
        display: none;
    }

    .sidebar-footer.open {
        display: flex;
        border-top: 1px solid var(--border-standard);
        padding: 8px 12px;
        margin: 0 -12px;
    }

    .hamburger {
        display: flex;
        position: absolute;
        right: 12px;
        top: 14px;
    }

    .main-content {
        padding: 16px 12px;
        margin-left: 0;
        width: 100%;
        margin-top: 52px;
    }

    .footer {
        margin-left: 0;
    }

    .stat-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .quick-links {
        grid-template-columns: repeat(2, 1fr);
    }
}