/* ========== MC茶喵群组服 · SaaS 工具风 · 共享样式 ========== */
:root {
    --bg: #f8f9fa;
    --bg-card: #ffffff;
    --primary: #1B5E20;
    --primary-light: #2E7D32;
    --primary-soft: #e8f5e9;
    --text: #1a1a2e;
    --text-secondary: #4a5568;
    --text-muted: #8899a6;
    --border: #e2e8f0;
    --radius-sm: 0.5rem;
    --radius: 0.75rem;
    --radius-lg: 1rem;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.08);
    --transition: all 0.2s ease;
    --sidebar-width: 224px;
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Plus Jakarta Sans', sans-serif;
    line-height: 1.6;
    min-height: 100vh;
}

/* ========== 侧边栏 ========== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: #fff;
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-brand {
    padding: 1.5rem 1.25rem;
    border-bottom: 1px solid var(--border);
}

.sidebar-brand a {
    text-decoration: none;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.sidebar-brand .brand-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.3px;
}

.sidebar-brand .brand-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.sidebar-nav {
    flex: 1;
    padding: 0.75rem 0;
    display: flex;
    flex-direction: column;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 1.25rem;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    border-left: 3px solid transparent;
    transition: var(--transition);
}

.sidebar-nav a:hover {
    color: var(--primary);
    background: var(--primary-soft);
}

.sidebar-nav a.active {
    color: var(--primary);
    background: var(--primary-soft);
    border-left-color: var(--primary);
    font-weight: 600;
}

.sidebar-nav a i {
    width: 1.1rem;
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.7;
}

.sidebar-nav a.active i { opacity: 1; }

.sidebar-divider {
    height: 1px;
    background: var(--border);
    margin: 0.5rem 1.25rem;
}

.sidebar-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.sidebar-footer .server-info {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    margin-top: 0.6rem;
}

.sidebar-footer .server-info span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.sidebar-footer .copyright {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
    color: #9ca3af;
    font-size: 0.7rem;
}

.sidebar-auth {
    margin-bottom: 0.75rem;
}

.sidebar-auth .btn-sm {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text-secondary);
}

.sidebar-auth .btn-sm:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-soft);
}

.sidebar-auth .btn-sm.primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.sidebar-auth .btn-sm.primary:hover {
    background: var(--primary-light);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.sidebar-user .avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--primary-soft);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}

.sidebar-user .user-name {
    font-weight: 600;
    color: var(--text);
    font-size: 0.85rem;
}

/* ========== 主内容区 ========== */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

.main-content .content-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: 2.5rem 2rem;
}

/* ========== 页面标题 ========== */
.page-header {
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.5px;
    margin-bottom: 0.3rem;
}

.page-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ========== 卡片 ========== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1.1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.875rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text-secondary);
    font-family: inherit;
    line-height: 1.4;
}

.btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-light);
    color: #fff;
}

.btn-danger {
    background: #fff;
    color: #dc2626;
    border-color: #fecaca;
}

.btn-danger:hover {
    background: #fef2f2;
    border-color: #dc2626;
}

.btn-sm {
    padding: 0.3rem 0.7rem;
    font-size: 0.8rem;
}

/* ========== 表单 ========== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.form-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--text);
    background: #fff;
    transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(27, 94, 32, 0.1);
}

.form-textarea { resize: vertical; min-height: 100px; }

/* ========== 消息/提示 ========== */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 0.875rem;
    border-left: 3px solid;
}

.alert-error {
    background: #fef2f2;
    border-color: #dc2626;
    color: #991b1b;
}

.alert-success {
    background: var(--primary-soft);
    border-color: var(--primary);
    color: var(--primary);
}

.alert-info {
    background: #eff6ff;
    border-color: #3b82f6;
    color: #1e40af;
}

/* ========== 徽章 ========== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-green {
    background: var(--primary-soft);
    color: var(--primary);
}

.badge-red {
    background: #fef2f2;
    color: #dc2626;
}

/* ========== 网格 ========== */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

/* ========== Toast ========== */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #1a1a2e;
    color: #fff;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-lg);
    transform: translateY(120px);
    opacity: 0;
    transition: var(--transition);
    z-index: 9999;
}

.toast.show { transform: translateY(0); opacity: 1; }
.toast.success { border-left: 3px solid #22c55e; }
.toast.error { border-left: 3px solid #ef4444; }
.toast.info { border-left: 3px solid var(--primary); }

/* ========== Footer（统一所有页面） ========== */
footer {
    padding: 1.5rem 1rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border);
    text-align: center;
}

footer div {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: baseline;
    gap: 0.75rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    text-align: center;
}

footer span {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    white-space: normal;
    letter-spacing: 0.01em;
}

footer span:first-of-type {
    font-weight: 500;
    color: #1f5e4a;
    background: #f2f7fa;
    padding: 0.2rem 0.7rem;
    border-radius: 32px;
    transition: background 0.2s;
}

footer a {
    color: #3d6b5e;
    text-decoration: none;
    font-weight: 480;
    background: #f2f7fa;
    padding: 0.2rem 0.7rem;
    border-radius: 32px;
    border-bottom: 1px solid transparent;
    transition: all 0.2s ease;
    line-height: 1.4;
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
}

footer a:hover {
    color: var(--primary);
    background: var(--primary-soft);
}

footer a:active { transform: translateY(0); }

footer a:focus-visible {
    outline: 2px solid #378a6b;
    outline-offset: 2px;
    border-radius: 32px;
}

/* ========== 通用页面元素（所有页面共用） ========== */
.official-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-soft);
    color: var(--primary);
    padding: 0.4rem 1rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.8rem;
}

/* ========== 充值/赞助页面专用样式 ========== */
.recharge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.recharge-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
}

.recharge-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.recharge-card.selected {
    border-color: var(--primary);
    background: var(--primary-soft);
}

.recharge-card .price {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary);
    margin: 0.5rem 0;
}

.recharge-card .points {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.recharge-card .badge-recommend {
    position: absolute;
    top: -10px;
    right: 16px;
    background: #F9A825;
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.2rem 0.7rem;
    border-radius: 999px;
}

.qrcode-container {
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin-bottom: 1.5rem;
}

.qrcode-container img {
    max-width: 220px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.order-info {
    margin-top: 1rem;
    padding: 1rem;
    background: #f9fafb;
    border-radius: var(--radius-sm);
    text-align: left;
    font-size: 0.9rem;
}

.order-info .order-id {
    font-family: monospace;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    word-break: break-all;
}

.step-indicator {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.step {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.step .step-num {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}

.step.active .step-num {
    background: var(--primary);
    color: #fff;
}

.step.active { color: var(--text); font-weight: 600; }

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .sidebar-nav {
        flex-direction: row;
        flex-wrap: wrap;
        padding: 0.5rem;
    }

    .sidebar-nav a {
        border-left: none;
        border-bottom: 2px solid transparent;
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }

    .sidebar-nav a.active {
        border-left: none;
        border-bottom-color: var(--primary);
    }

    .sidebar-footer,
    .sidebar-divider,
    .sidebar-brand .brand-sub { display: none; }

    .sidebar-brand { padding: 0.75rem 1rem; }
    .sidebar-brand .brand-title { font-size: 1rem; }

    .main-content { margin-left: 0; }
    .main-content .content-wrapper { padding: 1.5rem 1rem; }

    .grid-2, .grid-3 { grid-template-columns: 1fr; }

    footer {
        padding: 1rem 0.9rem;
    }
    footer div {
        gap: 0.6rem 1rem;
        flex-direction: column;
        align-items: center;
    }
    footer span:first-of-type,
    footer a {
        font-size: 0.82rem;
        padding: 0.2rem 0.6rem;
    }
}