/* 订阅智能体原型 - 全局样式 */

/* ========== CSS Variables ========== */
:root {
    /* 主题色 · 克莱因蓝（浅调） */
    --klein: #2563EB;
    --klein-deep: #1D4ED8;
    --klein-light: #EFF4FF;
    --primary-color: #2563EB;
    --primary-hover: #1D4ED8;
    --primary-light: #EFF4FF;

    /* 角色色 · 统一克莱因蓝（角色以账号区分） */
    --developer-color: #2563EB;
    --developer-light: #EFF4FF;
    --user-color: #2563EB;
    --user-light: #EFF4FF;
    --admin-color: #2563EB;
    --admin-light: #EFF4FF;
    --finance-color: #2563EB;
    --finance-light: #EFF4FF;
    
    /* 功能色（语义色保留） */
    --success-color: #10b981;
    --success-light: #d1fae5;
    --warning-color: #f59e0b;
    --warning-light: #fef3c7;
    --danger-color: #ef4444;
    --danger-light: #fee2e2;
    --error-color: #ef4444;
    --info-color: #06b6d4;
    --info-light: #cffafe;
    
    /* 中性色 · 白色底 */
    --bg-color: #ffffff;
    --bg-light: #F5F7FB;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #dfe4ee;
    --border-light: #ecf0f6;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    
    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

/* ========== Reset & Base ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-color);
    min-height: 100vh;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: 28px; }
h2 { font-size: 22px; }
h3 { font-size: 18px; }
h4 { font-size: 16px; }

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-secondary); }
.text-small { font-size: 12px; }

/* ========== Layout ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========== Header ========== */
.header {
    background: linear-gradient(135deg, var(--klein), var(--klein-deep));
    color: white;
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.header-content {
    position: relative;
    z-index: 1;
}

.header h1 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.header-subtitle {
    opacity: 0.9;
    font-size: 16px;
}

/* ========== Navigation ========== */
.nav {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-list {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all 0.2s;
}

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

.nav-link.active {
    color: var(--primary-color);
    background: var(--primary-light);
    font-weight: 500;
}

.nav-link .icon {
    font-size: 18px;
}

/* ========== Card ========== */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    transition: all 0.3s;
}

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

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
}

.card-title {
    font-size: 16px;
    font-weight: 600;
}

/* ========== Role Cards ========== */
.role-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-xl) 0;
}

.role-card {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
    border: 2px solid transparent;
}

.role-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.role-card.developer:hover { border-color: var(--developer-color); }
.role-card.user:hover { border-color: var(--user-color); }
.role-card.admin:hover { border-color: var(--admin-color); }
.role-card.finance:hover { border-color: var(--finance-color); }

.role-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.role-card.developer::before { background: var(--developer-color); }
.role-card.user::before { background: var(--user-color); }
.role-card.admin::before { background: var(--admin-color); }
.role-card.finance::before { background: var(--finance-color); }

.role-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: var(--spacing-md);
}

.role-card.developer .role-icon { background: var(--developer-light); }
.role-card.user .role-icon { background: var(--user-light); }
.role-card.admin .role-icon { background: var(--admin-light); }
.role-card.finance .role-icon { background: var(--finance-light); }

.role-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.role-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 14px;
}

.role-features {
    list-style: none;
}

.role-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
    font-size: 13px;
    color: var(--text-secondary);
}

.role-features li::before {
    content: '✓';
    color: var(--success-color);
    font-weight: bold;
}

.role-arrow {
    position: absolute;
    right: var(--spacing-lg);
    bottom: var(--spacing-lg);
    font-size: 24px;
    opacity: 0.3;
    transition: all 0.3s;
}

.role-card:hover .role-arrow {
    opacity: 1;
    transform: translateX(4px);
}

.role-card.developer:hover .role-arrow { color: var(--developer-color); }
.role-card.user:hover .role-arrow { color: var(--user-color); }
.role-card.admin:hover .role-arrow { color: var(--admin-color); }
.role-card.finance:hover .role-arrow { color: var(--finance-color); }

/* ========== Button ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

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

.btn-secondary {
    background: var(--border-light);
    color: var(--text-primary);
}

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

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-warning {
    background: var(--warning-color);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--border-light);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 12px;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 16px;
}

/* ========== Table ========== */
.table-wrapper {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.table th {
    background: var(--border-light);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table tr:hover {
    background: var(--border-light);
}

.table .amount {
    font-weight: 600;
    color: var(--text-primary);
}

.table .amount.positive {
    color: var(--success-color);
}

.table .amount.negative {
    color: var(--danger-color);
}

/* ========== Form ========== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: all 0.2s;
}

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

.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

/* ========== Badge ========== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: var(--developer-light);
    color: var(--developer-color);
}

.badge-info {
    background: var(--user-light);
    color: var(--user-color);
}

.badge-warning {
    background: var(--admin-light);
    color: var(--admin-color);
}

.badge-danger {
    background: #fee2e2;
    color: var(--danger-color);
}

/* ========== Stats ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-value.success { color: var(--success-color); }
.stat-value.warning { color: var(--warning-color); }
.stat-value.danger { color: var(--danger-color); }

.stat-change {
    font-size: 12px;
    margin-top: var(--spacing-xs);
}

.stat-change.up { color: var(--success-color); }
.stat-change.down { color: var(--danger-color); }

/* ========== Tabs ========== */
.tabs {
    display: flex;
    gap: var(--spacing-xs);
    border-bottom: 2px solid var(--border-light);
    margin-bottom: var(--spacing-lg);
}

.tab-item {
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: all 0.2s;
}

.tab-item:hover {
    color: var(--primary-color);
}

.tab-item.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 500;
}

/* ========== Sidebar Layout ========== */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* 顶部栏 */
.top-bar {
    height: 60px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.top-bar-logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.top-bar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.top-bar-user:hover {
    background: var(--border-light);
}

.top-bar-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--klein);
}

/* 侧边栏 */
.sidebar {
    width: 260px;
    background: var(--card-bg);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 60px;
    left: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 99;
}

.sidebar-section {
    padding: var(--spacing-md);
}

.sidebar-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
    padding: 0 var(--spacing-md);
}

.sidebar-menu {
    list-style: none;
}

.sidebar-item {
    margin-bottom: 2px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.2s;
    font-size: 14px;
}

.sidebar-link:hover {
    background: var(--border-light);
    color: var(--text-primary);
}

.sidebar-link.active {
    background: var(--primary-light);
    color: var(--primary-color);
    font-weight: 500;
}

.sidebar-link .icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.sidebar-link .icon svg {
    width: 18px;
    height: 18px;
    display: block;
    opacity: 0.85;
}

.sidebar-link.active .icon svg {
    opacity: 1;
}

/* 顶栏通知铃铛 */
.topbar-notify { position: relative; display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; color: var(--text-secondary); margin-right: 6px; transition: all 0.2s; }
.topbar-notify:hover { background: var(--primary-light); color: var(--primary-color); }
.topbar-notify svg { width: 20px; height: 20px; }
.topbar-notify-badge { position: absolute; top: 0; right: 0; background: var(--danger-color); color: #fff; font-size: 10px; min-width: 15px; height: 15px; border-radius: 8px; display: flex; align-items: center; justify-content: center; padding: 0 4px; font-weight: 600; }

/* 顶栏品牌（彩翼高科 + 平台名） */
.logo-img { height: 34px; width: auto; display: block; }
.top-bar-title { font-size: 15px; font-weight: 700; color: var(--text-primary); margin-left: 12px; padding-left: 14px; border-left: 1px solid var(--border-color); }

.sidebar-badge {
    margin-left: auto;
    background: var(--danger-color);
    color: white;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 500;
}

/* 角色主题色侧边栏 */
.sidebar.developer { border-top: 3px solid var(--developer-color); }
.sidebar.channel { border-top: 3px solid var(--klein); }
.sidebar.channel .sidebar-link.active { background: var(--klein-light); color: var(--klein); }
.sidebar.developer .sidebar-link.active { background: var(--developer-light); color: var(--developer-color); }
.sidebar.developer .top-bar { border-top: 3px solid var(--developer-color); }

.sidebar.user { border-top: 3px solid var(--user-color); }
.sidebar.user .sidebar-link.active { background: var(--user-light); color: var(--user-color); }
.sidebar.user .top-bar { border-top: 3px solid var(--user-color); }

.sidebar.admin { border-top: 3px solid var(--admin-color); }
.sidebar.admin .sidebar-link.active { background: var(--admin-light); color: var(--admin-color); }
.sidebar.admin .top-bar { border-top: 3px solid var(--admin-color); }

.sidebar.finance { border-top: 3px solid var(--finance-color); }
.sidebar.finance .sidebar-link.active { background: var(--finance-light); color: var(--finance-color); }
.sidebar.finance .top-bar { border-top: 3px solid var(--finance-color); }

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: 260px;
    margin-top: 60px;
    padding: var(--spacing-lg);
    min-height: calc(100vh - 60px);
}

.main-header {
    margin-bottom: var(--spacing-lg);
}

.main-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.main-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 内容卡片 */
.content-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.content-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
}

.content-card-title {
    font-size: 16px;
    font-weight: 600;
}

/* 旧版布局兼容性 */
.layout {
    display: flex;
    min-height: calc(100vh - 200px);
}

/* ========== Modal ========== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: all 0.3s;
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 24px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.modal-close:hover {
    background: var(--border-light);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* ========== Alert ========== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.alert-info {
    background: var(--user-light);
    color: var(--user-color);
}

.alert-warning {
    background: var(--admin-light);
    color: var(--admin-color);
}

.alert-danger {
    background: #fee2e2;
    color: var(--danger-color);
}

.alert-success {
    background: var(--developer-light);
    color: var(--developer-color);
}

/* ========== Empty State ========== */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) * 2;
    color: var(--text-muted);
}

.empty-state .icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* ========== Pagination ========== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-lg);
}

.pagination-item {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.pagination-item:hover {
    background: var(--border-light);
}

.pagination-item.active {
    background: var(--primary-color);
    color: white;
}

/* ========== Process Flow ========== */
.process-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xl) 0;
    flex-wrap: wrap;
}

.process-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.process-node {
    background: var(--primary-light);
    color: var(--primary-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 13px;
}

.process-arrow {
    color: var(--text-muted);
    font-size: 20px;
}

/* ========== Price Display ========== */
.price-tag {
    display: inline-flex;
    align-items: baseline;
    gap: 2px;
}

.price-unit {
    font-size: 14px;
    color: var(--text-secondary);
}

.price-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

/* ========== Balance Display ========== */
.balance-card {
    background: linear-gradient(135deg, var(--primary-color), #818cf8);
    color: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
}

.balance-label {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
}

.balance-value {
    font-size: 48px;
    font-weight: 700;
}

.balance-unit {
    font-size: 20px;
    opacity: 0.9;
}

/* ========== Timeline ========== */
.timeline {
    position: relative;
    padding-left: var(--spacing-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--spacing-lg);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--spacing-xl) + 4px);
    top: 4px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary-color);
}

.timeline-time {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

.timeline-content {
    background: var(--border-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

/* ========== Utility Classes ========== */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.w-full { width: 100%; }
.hidden { display: none; }

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .role-cards {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .layout {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-list {
        overflow-x: auto;
        gap: var(--spacing-sm);
    }
}

/* ========== Form Input ========== */
.input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: all 0.2s;
}

.input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* ========== Select ========== */
.select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    background: var(--card-bg);
    cursor: pointer;
}

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

/* ========== Payment Method Card ========== */
.payment-method {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.payment-method:hover {
    border-color: var(--user-color);
    background: var(--border-light);
}

.payment-method.selected {
    border-color: var(--user-color);
    background: var(--user-light);
}

/* ========== Back Link ========== */
.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    display: inline-block;
    margin-bottom: var(--spacing-sm);
}

.back-link:hover {
    color: var(--user-color);
}

/* ========== Primary Badge ========== */
.badge-primary {
    background: var(--primary-light);
    color: var(--primary-color);
}

/* ========== 状态标签页（全局统一筛选样式） ========== */
.tab-nav {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-light);
    flex-wrap: wrap;
}
.tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
    white-space: nowrap;
}
.tab-btn:hover { color: var(--klein); }
.tab-btn.active {
    color: var(--klein);
    border-bottom-color: var(--klein);
    font-weight: 500;
}

/* ========== 表格防挤压（全局统一） ========== */
.table th { white-space: nowrap; }          /* 表头永远一行 */
.table td.amount { white-space: nowrap; }   /* 金额不折行 */
.table .badge { white-space: nowrap; }      /* 状态徽标不折行 */
.table-wide { min-width: 1100px; }          /* ≥8 列的表：不够宽时在卡片内横向滚动 */
.table-xwide { min-width: 1600px; }         /* ≥12 列的表 */
.table-wide td { white-space: nowrap; }     /* 宽表单元格单行展示，靠横向滚动兜底 */
.table-wide td > div { white-space: normal; } /* 单元格内备注小字仍可正常换行 */