/**
 * 用户管理页面样式 - 高级版
 * ===========================
 *
 * 包含：装饰背景、统计仪表盘、高级卡片、动画系统
 */

/* ========== 新增 CSS 变量 ========== */
:root {
    /* 用户管理页特有变量 */
    --users-header-height: 120px;
    --card-hover-lift: -6px;
    --card-hover-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);

    /* 动画时长 */
    --anim-duration-fast: 0.15s;
    --anim-duration-normal: 0.25s;
    --anim-duration-slow: 0.4s;

    /* 错落动画基础延迟 */
    --stagger-base: 0.05s;
}

/* ========== 基础重置 ========== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-page, #f5f7fa);
    min-height: 100vh;
    color: var(--text-primary, #1e293b);
    overflow-x: hidden;
}

/* ========== 页面装饰背景 ========== */
.page-bg {
    position: fixed;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.bg-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.14;
    animation: none;
}

.bg-circle-1 {
    width: 500px;
    height: 500px;
    background: var(--brand-primary-soft, rgba(99, 102, 241, 0.2));
    top: -150px;
    right: -100px;
    animation-delay: 0s;
}

.bg-circle-2 {
    width: 400px;
    height: 400px;
    background: var(--ai-soft, rgba(167, 139, 250, 0.15));
    bottom: -100px;
    left: -100px;
    animation-delay: -10s;
}

@keyframes bgFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -20px) scale(1.05); }
    50% { transform: translate(-20px, 30px) scale(0.95); }
    75% { transform: translate(-30px, -10px) scale(1.02); }
}

/* 网格背景 */
.bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    animation: none;
}

@keyframes gridMove {
    0% { background-position: 0 0; }
    100% { background-position: 40px 40px; }
}

/* ========== 页面容器 ========== */
.page-container {
    position: relative;
    z-index: 1;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px 60px;
}

/* ========== 页头升级 ========== */
.page-header {
    position: relative;
    padding: 32px 0 24px;
    margin-bottom: 24px;
    animation: slideInDown 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(255, 255, 255, 0.7) 100%
    );
    backdrop-filter: blur(20px);
    border-radius: 0 0 24px 24px;
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
    z-index: -1;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* 返回链接升级 */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: var(--tap-control-min-h);
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary, #64748b);
    text-decoration: none;
    background: var(--bg-white, #fff);
    border-radius: 10px;
    border: 1px solid var(--border-light, #e2e8f0);
    transition: all var(--anim-duration-normal) cubic-bezier(0.16, 1, 0.3, 1);
}

.back-link:hover {
    color: var(--brand-primary, #6366f1);
    border-color: var(--brand-primary-border, rgba(99, 102, 241, 0.3));
    background: var(--brand-primary-soft, rgba(99, 102, 241, 0.04));
    transform: translateX(-4px);
}

.back-link svg {
    transition: transform var(--anim-duration-fast);
}

.back-link:hover svg {
    transform: translateX(-2px);
}

/* 标题组 */
.title-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.page-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary, #1e293b);
    letter-spacing: -0.02em;
}

.title-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--ai-gradient, linear-gradient(135deg, #818CF8, #A78BFA));
    border-radius: 12px;
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.page-subtitle {
    font-size: 14px;
    color: var(--text-tertiary, #94a3b8);
    margin-left: 56px;
}

/* 用户下拉菜单 */
.user-dropdown-container {
    position: relative;
}

.user-dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: var(--tap-control-min-h);
    padding: 8px 14px;
    background: var(--bg-white, #ffffff);
    border: 1px solid var(--border-light, #e2e8f0);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--anim-duration-normal);
}

.user-dropdown-trigger:hover {
    border-color: var(--brand-primary-border, rgba(99, 102, 241, 0.3));
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
}

.user-dropdown-trigger .header-avatar {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: white;
    background: var(--ai-gradient, linear-gradient(135deg, #818CF8, #A78BFA));
    border-radius: 10px;
}

.user-dropdown-trigger .header-user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
}

.user-dropdown-trigger .header-user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary, #1e293b);
}

.user-dropdown-trigger .header-user-role {
    font-size: 11px;
    color: var(--text-tertiary, #94a3b8);
}

.user-dropdown-trigger .dropdown-arrow {
    color: var(--text-tertiary, #94a3b8);
    transition: transform var(--anim-duration-fast);
}

.user-dropdown-trigger:hover .dropdown-arrow {
    color: var(--brand-primary, #6366f1);
}

.user-dropdown-container.open .dropdown-arrow {
    transform: rotate(180deg);
}

.user-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    background: var(--bg-white, #ffffff);
    border: 1px solid var(--border-light, #e2e8f0);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    padding: 8px;
    z-index: 1000;
}

.user-dropdown-menu.show {
    display: block;
    animation: dropdownIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes dropdownIn {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--text-secondary, #64748b);
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--anim-duration-fast);
}

.dropdown-item:hover {
    color: var(--color-danger, #ef4444);
    background: var(--color-danger-bg, #fef2f2);
}

/* ========== 统计仪表盘 ========== */
.stats-dashboard {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 28px;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.1s backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-card {
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px;
    background: var(--bg-white, #ffffff);
    border-radius: 16px;
    border: 1px solid var(--border-light, #e2e8f0);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    transition: all var(--anim-duration-normal) cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: 16px 16px 0 0;
    opacity: 0;
    transition: opacity var(--anim-duration-normal);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

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

.stat-card-total::before { background: var(--brand-primary, #6366f1); }
.stat-card-active::before { background: var(--color-success, #10b981); }
.stat-card-admin::before { background: var(--color-warning, #f59e0b); }
.stat-card-new::before { background: var(--color-purple, #8b5cf6); }

.stat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    flex-shrink: 0;
}

.stat-card-total .stat-icon {
    background: var(--brand-primary-soft, rgba(99, 102, 241, 0.1));
    color: var(--brand-primary, #6366f1);
}

.stat-card-active .stat-icon {
    background: var(--color-success-light, #dcfce7);
    color: var(--color-success, #10b981);
}

.stat-card-admin .stat-icon {
    background: var(--color-warning-light, #fef3c7);
    color: var(--color-warning, #f59e0b);
}

.stat-card-new .stat-icon {
    background: var(--color-purple-soft, rgba(139, 92, 246, 0.1));
    color: var(--color-purple, #8b5cf6);
}

.stat-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary, #1e293b);
    line-height: 1.2;
    font-variant-numeric: tabular-nums;
}

.stat-label {
    font-size: 13px;
    color: var(--text-tertiary, #94a3b8);
}

/* 数字计数动画 */
@keyframes countUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.stat-value.animate {
    animation: countUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ========== 工具栏升级 ========== */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.2s backwards;
}

.toolbar-left {
    display: flex;
    gap: 12px;
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 发光按钮 */
.btn-glow {
    position: relative;
    overflow: hidden;
}

.btn-glow::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(90deg,
        var(--brand-primary, #6366f1) 0%,
        var(--ai-lavender, #A78BFA) 50%,
        var(--brand-primary, #6366f1) 100%
    );
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    filter: blur(8px);
    transition: opacity var(--anim-duration-normal);
}

.btn-glow:hover::before {
    opacity: 0.6;
    animation: glowRotate 3s linear infinite;
}

@keyframes glowRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 可展开搜索框 */
.search-container {
    position: relative;
    display: flex;
    align-items: center;
    width: 42px;
    height: 42px;
    background: var(--bg-white, #ffffff);
    border: 1px solid var(--border-light, #e2e8f0);
    border-radius: 12px;
    transition: all var(--anim-duration-slow) cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

.search-container.expanded {
    width: 280px;
    border-color: var(--brand-primary, #6366f1);
    box-shadow: 0 0 0 3px var(--brand-primary-soft, rgba(99, 102, 241, 0.1));
}

.search-toggle {
    position: absolute;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: transparent;
    border: none;
    color: var(--text-tertiary, #94a3b8);
    cursor: pointer;
    transition: color var(--anim-duration-fast);
    z-index: 2;
}

.search-toggle:hover {
    color: var(--brand-primary, #6366f1);
}

.search-container.expanded .search-toggle {
    color: var(--brand-primary, #6366f1);
}

.search-input {
    width: 100%;
    height: 100%;
    padding: 0 36px 0 42px;
    border: none;
    background: transparent;
    font-size: 14px;
    color: var(--text-primary, #1e293b);
    outline: none;
    opacity: 0;
    transform: translateX(-20px);
    transition: all var(--anim-duration-normal);
}

.search-container.expanded .search-input {
    opacity: 1;
    transform: translateX(0);
}

.search-input::placeholder {
    color: var(--text-tertiary, #94a3b8);
}

.search-clear {
    position: absolute;
    right: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    background: var(--bg-tertiary, #f1f5f9);
    border: none;
    border-radius: 6px;
    color: var(--text-tertiary, #94a3b8);
    cursor: pointer;
    opacity: 0;
    transform: scale(0.8);
    transition: all var(--anim-duration-fast);
}

.search-container.expanded .search-clear.visible {
    opacity: 1;
    transform: scale(1);
}

.search-clear:hover {
    background: var(--color-danger-bg, #fef2f2);
    color: var(--color-danger, #ef4444);
}

/* 筛选器升级 */
.toolbar-filters {
    display: flex;
    gap: 10px;
}

.filter-wrapper {
    position: relative;
}

.filter-select {
    appearance: none;
    min-height: var(--tap-control-min-h);
    padding: 10px 36px 10px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary, #1e293b);
    background: var(--bg-white, #ffffff);
    border: 1px solid var(--border-light, #e2e8f0);
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--anim-duration-normal);
    min-width: 120px;
}

.filter-select:hover {
    border-color: var(--border-medium, #cbd5e1);
}

.filter-select:focus {
    outline: none;
    border-color: var(--brand-primary, #6366f1);
    box-shadow: 0 0 0 3px var(--brand-primary-soft, rgba(99, 102, 241, 0.1));
}

.filter-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--text-tertiary, #94a3b8);
    transition: transform var(--anim-duration-fast);
}

.filter-select:focus + .filter-icon {
    transform: translateY(-50%) rotate(180deg);
}

/* ========== 用户列表升级 ========== */
.user-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.3s backwards;
}

/* 用户卡片升级 */
.user-card {
    position: relative;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 22px;
    background: var(--bg-white, #ffffff);
    border: 1px solid var(--border-light, #e2e8f0);
    border-radius: 16px;
    transition: all var(--anim-duration-normal) cubic-bezier(0.16, 1, 0.3, 1);
    animation: cardAppear 0.4s cubic-bezier(0.16, 1, 0.3, 1) backwards;
    animation-delay: calc(var(--stagger-index, 0) * var(--stagger-base));
}

@keyframes cardAppear {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.user-card:hover {
    transform: translateY(var(--card-hover-lift));
    border-color: var(--brand-primary-border, rgba(99, 102, 241, 0.3));
    box-shadow: var(--card-hover-shadow);
}

/* 在线状态指示器 */
.online-indicator {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 4px;
    height: 32px;
    border-radius: 0 4px 4px 0;
    transition: all var(--anim-duration-normal);
}

.online-indicator.online {
    background: var(--color-success, #10b981);
    box-shadow: 0 0 8px var(--color-success, #10b981);
}

.online-indicator.offline {
    background: var(--neutral-300, #cbd5e1);
}

.user-card:hover .online-indicator.online {
    height: 48px;
    box-shadow: 0 0 12px var(--color-success, #10b981);
}

/* 当前用户卡片 */
.user-card.current-user {
    border-color: var(--brand-primary-border, rgba(99, 102, 241, 0.3));
    background: linear-gradient(135deg,
        rgba(99, 102, 241, 0.03) 0%,
        rgba(167, 139, 250, 0.03) 100%
    );
}

.user-card.current-user::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 17px;
    padding: 1px;
    background: linear-gradient(135deg,
        var(--brand-primary, #6366f1) 0%,
        var(--ai-lavender, #A78BFA) 100%
    );
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.3;
    pointer-events: none;
}

/* 头像升级 */
.user-avatar-wrapper {
    position: relative;
    flex-shrink: 0;
}

.user-avatar {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 600;
    color: white;
    background: var(--ai-gradient, linear-gradient(135deg, #818CF8, #A78BFA));
    border-radius: 14px;
    transition: all var(--anim-duration-normal);
}

.avatar-ring {
    position: absolute;
    inset: -4px;
    border-radius: 18px;
    border: 2px solid transparent;
    opacity: 0;
    transition: all var(--anim-duration-normal);
}

.user-card:hover .avatar-ring {
    opacity: 1;
    border-color: var(--brand-primary-border, rgba(99, 102, 241, 0.3));
    animation: ringPulse 1.5s ease-in-out infinite;
}

@keyframes ringPulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.05); opacity: 1; }
}

.user-card:hover .user-avatar {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

/* 用户信息 */
.user-info {
    flex: 1;
    min-width: 0;
}

.user-info .user-name {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
    min-width: 0;
}

.user-info .name-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary, #1e293b);
    min-width: 0;
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.badge-self {
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    color: var(--brand-primary, #6366f1);
    background: var(--brand-primary-soft, rgba(99, 102, 241, 0.1));
    border-radius: 6px;
}

.badge-self.pulse {
    animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4); }
    50% { box-shadow: 0 0 0 6px rgba(99, 102, 241, 0); }
}

.user-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
    flex-wrap: wrap;
}

.user-username {
    font-size: 13px;
    color: var(--text-tertiary, #94a3b8);
    min-width: 0;
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
}

/* 徽章升级 */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 6px;
    transition: all var(--anim-duration-fast);
}

.badge-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: currentColor;
}

.badge.role-admin {
    color: var(--color-danger-dark, #991b1b);
    background: var(--color-danger-light, #fee2e2);
}

.badge.role-user {
    color: var(--color-info-dark, #1e40af);
    background: var(--color-info-light, #dbeafe);
}

.badge.role-guest {
    color: var(--text-secondary, #64748b);
    background: var(--bg-tertiary, #f1f5f9);
}

.badge.status-active {
    color: var(--color-success-dark, #166534);
    background: var(--color-success-light, #dcfce7);
}

.badge.status-disabled {
    color: var(--color-warning-dark, #b45309);
    background: var(--color-warning-light, #fef3c7);
}

.user-time {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-tertiary, #94a3b8);
}

.user-time svg {
    opacity: 0.6;
}

/* 操作按钮升级 */
.user-actions {
    display: flex;
    gap: 6px;
    opacity: 0.6;
    transition: opacity var(--anim-duration-fast);
}

.user-card:hover .user-actions {
    opacity: 1;
}

.btn-action {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: var(--bg-secondary, #f8fafc);
    border: 1px solid transparent;
    border-radius: 10px;
    color: var(--text-tertiary, #94a3b8);
    cursor: pointer;
    transition: all var(--anim-duration-normal) cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-action:hover {
    transform: translateY(-2px);
}

.btn-action-edit:hover {
    color: var(--brand-primary, #6366f1);
    background: var(--brand-primary-soft, rgba(99, 102, 241, 0.1));
    border-color: var(--brand-primary-border, rgba(99, 102, 241, 0.3));
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.btn-action-key:hover {
    color: var(--color-warning, #f59e0b);
    background: var(--color-warning-light, #fef3c7);
    border-color: var(--color-warning-light, #fef3c7);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.2);
}

.btn-action-delete:hover {
    color: var(--color-danger, #ef4444);
    background: var(--color-danger-bg, #fef2f2);
    border-color: var(--color-danger-light, #fee2e2);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

/* 兼容旧的 btn-icon 类 */
.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: var(--bg-secondary, #f8fafc);
    border: 1px solid transparent;
    border-radius: 10px;
    color: var(--text-tertiary, #94a3b8);
    cursor: pointer;
    transition: all var(--anim-duration-normal) cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-icon:hover {
    transform: translateY(-2px);
    color: var(--brand-primary, #6366f1);
    background: var(--brand-primary-soft, rgba(99, 102, 241, 0.1));
    border-color: var(--brand-primary-border, rgba(99, 102, 241, 0.3));
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.btn-icon-danger:hover {
    color: var(--color-danger, #ef4444);
    background: var(--color-danger-bg, #fef2f2);
    border-color: var(--color-danger-light, #fee2e2);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

/* ========== 骨架屏加载 ========== */
.skeleton-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 22px;
    background: var(--bg-white, #ffffff);
    border: 1px solid var(--border-light, #e2e8f0);
    border-radius: 16px;
}

.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary, #f1f5f9) 25%,
        var(--bg-secondary, #f8fafc) 50%,
        var(--bg-tertiary, #f1f5f9) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-avatar {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    flex-shrink: 0;
}

.skeleton-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.skeleton-line {
    height: 14px;
}

.skeleton-line-short {
    width: 40%;
}

.skeleton-line-medium {
    width: 70%;
}

.skeleton-line-long {
    width: 50%;
}

/* ========== 状态显示升级 ========== */
.loading-state,
.error-state,
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 24px;
    text-align: center;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.state-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    border-radius: 20px;
}

.loading-state .state-icon {
    background: var(--brand-primary-soft, rgba(99, 102, 241, 0.1));
    color: var(--brand-primary, #6366f1);
}

.error-state .state-icon {
    background: var(--color-danger-bg, #fef2f2);
    color: var(--color-danger, #ef4444);
}

.empty-state .state-icon {
    background: var(--bg-tertiary, #f1f5f9);
    color: var(--text-tertiary, #94a3b8);
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border-light, #e2e8f0);
    border-top-color: var(--brand-primary, #6366f1);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.state-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary, #1e293b);
    margin-bottom: 8px;
}

.state-desc {
    font-size: 14px;
    color: var(--text-tertiary, #94a3b8);
    margin-bottom: 20px;
    max-width: 300px;
}

.loading-state p,
.error-state p,
.empty-state p {
    font-size: 14px;
    color: var(--text-tertiary, #94a3b8);
}

.error-state svg,
.empty-state svg {
    color: var(--text-tertiary, #94a3b8);
    margin-bottom: 12px;
}

.error-state .btn,
.empty-state .btn {
    margin-top: 16px;
}

/* ========== 分页升级 ========== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 28px;
    padding-top: 28px;
    border-top: 1px solid var(--border-light, #e2e8f0);
    animation: fadeInUp 0.4s ease 0.4s backwards;
}

.pagination-info {
    font-size: 14px;
    color: var(--text-tertiary, #94a3b8);
}

.pagination-buttons {
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-page {
    min-width: 40px;
    height: 40px;
    padding: 0 14px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary, #64748b);
    background: var(--bg-white, #ffffff);
    border: 1px solid var(--border-light, #e2e8f0);
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--anim-duration-normal);
}

.btn-page:hover:not(:disabled) {
    border-color: var(--brand-primary, #6366f1);
    color: var(--brand-primary, #6366f1);
    transform: translateY(-2px);
}

.btn-page.active {
    color: white;
    background: var(--brand-primary, #6366f1);
    border-color: var(--brand-primary, #6366f1);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.btn-page:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination-ellipsis {
    padding: 0 8px;
    color: var(--text-tertiary, #94a3b8);
}

/* ========== 模态框升级 ========== */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    animation: backdropIn 0.3s ease;
}

@keyframes backdropIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    background: var(--bg-white, #ffffff);
    border-radius: 20px;
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.25),
        0 0 0 1px rgba(255, 255, 255, 0.1);
    overflow: hidden;
    margin: 20px;
    animation: modalIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-small {
    max-width: 420px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 28px;
    border-bottom: 1px solid var(--border-light, #e2e8f0);
}

.modal-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary, #1e293b);
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--text-tertiary, #94a3b8);
    background: var(--bg-secondary, #f8fafc);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--anim-duration-fast);
}

.modal-close:hover {
    color: var(--text-primary, #1e293b);
    background: var(--bg-tertiary, #e2e8f0);
    transform: rotate(90deg);
}

.modal-body {
    padding: 28px;
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px 28px;
    border-top: 1px solid var(--border-light, #e2e8f0);
    background: var(--bg-secondary, #f8fafc);
}

/* 表单升级 */
.form-group {
    margin-bottom: 22px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary, #475569);
    margin-bottom: 10px;
}

.form-hint-inline {
    font-weight: 400;
    font-size: 12px;
    color: var(--text-tertiary, #94a3b8);
    margin-left: 4px;
}

.form-input {
    width: 100%;
    height: 48px;
    padding: 0 16px;
    font-size: 15px;
    color: var(--text-primary, #1e293b);
    background: var(--bg-secondary, #f8fafc);
    border: 2px solid var(--border-light, #e2e8f0);
    border-radius: 12px;
    outline: none;
    transition: all var(--anim-duration-normal);
}

.form-input:hover {
    border-color: var(--neutral-300, #cbd5e1);
}

.form-input:focus {
    border-color: var(--brand-primary, #6366f1);
    background: var(--bg-white, #ffffff);
    box-shadow: 0 0 0 4px var(--brand-primary-soft, rgba(99, 102, 241, 0.1));
}

.form-input::placeholder {
    color: var(--text-tertiary, #94a3b8);
}

select.form-input {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 44px;
}

.form-hint {
    font-size: 12px;
    color: var(--text-tertiary, #94a3b8);
    margin-top: 8px;
}

.form-hint.form-error {
    color: var(--color-danger, #ef4444);
}

/* 输入框错误状态 */
.form-input.input-error {
    border-color: var(--color-danger, #ef4444);
    background: rgba(239, 68, 68, 0.04);
    animation: inputShake 0.4s cubic-bezier(0.36, 0.07, 0.19, 0.97);
}

.form-input.input-error:focus {
    border-color: var(--color-danger, #ef4444);
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.12);
}

/* 输入框成功状态 */
.form-input.input-success {
    border-color: var(--color-success, #22c55e);
}

.form-input.input-success:focus {
    border-color: var(--color-success, #22c55e);
    box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.12);
}

/* 抖动动画 */
@keyframes inputShake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
    20%, 40%, 60%, 80% { transform: translateX(4px); }
}

/* 密码匹配状态图标 */
.password-match-indicator {
    position: absolute;
    right: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--anim-duration-fast);
}

.password-match-indicator.show {
    opacity: 1;
    transform: scale(1);
}

.password-match-indicator.match {
    color: var(--color-success, #22c55e);
}

.password-match-indicator.mismatch {
    color: var(--color-danger, #ef4444);
}

/* 密码输入框包装器 */
.input-password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-password-wrapper .form-input {
    padding-right: 52px;
}

.btn-toggle-password {
    position: absolute;
    right: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-tertiary, #94a3b8);
    cursor: pointer;
    transition: all var(--anim-duration-fast);
}

.btn-toggle-password:hover {
    color: var(--brand-primary, #6366f1);
    background: var(--brand-primary-soft, rgba(99, 102, 241, 0.08));
}

.btn-toggle-password:active {
    transform: scale(0.92);
}

.btn-toggle-password svg {
    transition: all var(--anim-duration-fast);
}

.btn-toggle-password:hover svg {
    stroke-width: 2;
}

.btn-toggle-password.visible .icon-eye {
    display: none;
}

.btn-toggle-password.visible .icon-eye-off {
    display: block !important;
}

/* 按钮升级 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--anim-duration-normal) cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary {
    color: white;
    background: var(--brand-primary, #6366f1);
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.2);
}

.btn-primary:hover {
    background: var(--brand-primary-hover, #5457e5);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    color: var(--text-secondary, #64748b);
    background: var(--bg-tertiary, #f1f5f9);
}

.btn-secondary:hover {
    background: var(--bg-quaternary, #e2e8f0);
}

.btn-danger {
    color: white;
    background: var(--color-danger, #ef4444);
    box-shadow: 0 2px 4px rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
    background: var(--color-danger-hover, #dc2626);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(239, 68, 68, 0.3);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* 删除确认升级 */
.delete-warning,
.reset-info {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px;
    background: var(--color-warning-light, #fef3c7);
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary, #475569);
    margin-bottom: 20px;
}

.delete-warning svg {
    flex-shrink: 0;
    color: var(--color-warning, #f59e0b);
}

.delete-warning strong,
.reset-info strong {
    color: var(--text-primary, #1e293b);
}

/* Toast 通知 */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--neutral-900, #0f172a);
    color: white;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: all var(--anim-duration-slow) cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 2000;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast-success {
    background: var(--color-success, #10b981);
}

.toast-error {
    background: var(--color-danger, #ef4444);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .stats-dashboard {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .page-container {
        padding: 0 16px 40px;
    }

    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .header-right {
        width: 100%;
        justify-content: flex-end;
    }

    .page-title {
        font-size: 22px;
    }

    .page-subtitle {
        display: none;
    }

    .stats-dashboard {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .stat-card {
        padding: 16px;
    }

    .stat-icon {
        width: 40px;
        height: 40px;
    }

    .stat-value {
        font-size: 22px;
    }
}

@media (max-width: 640px) {
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .toolbar-left,
    .toolbar-right {
        width: 100%;
    }

    .toolbar-right {
        flex-wrap: wrap;
    }

    .search-container.expanded {
        width: 100%;
    }

    .toolbar-filters {
        width: 100%;
    }

    .filter-wrapper {
        flex: 1;
    }

    .filter-select {
        width: 100%;
        min-width: auto;
    }

    .user-card {
        flex-wrap: wrap;
        padding: 16px;
    }

    .user-avatar-wrapper {
        order: 1;
    }

    .user-info {
        order: 2;
        flex: 1;
    }

    .user-actions {
        order: 3;
        width: 100%;
        justify-content: flex-end;
        padding-top: 14px;
        margin-top: 14px;
        border-top: 1px solid var(--border-light, #e2e8f0);
    }

    .pagination {
        flex-direction: column;
        gap: 16px;
    }

    .pagination-buttons {
        flex-wrap: wrap;
        justify-content: center;
        max-width: 100%;
    }

    .header-left {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .title-group {
        margin-left: 0;
    }

    .page-subtitle {
        margin-left: 0;
    }
}

@media (max-width: 480px) {
    .stats-dashboard {
        grid-template-columns: 1fr;
    }

    .stat-card {
        flex-direction: row;
        justify-content: flex-start;
    }

    .user-dropdown-trigger .header-user-info {
        display: none;
    }

    .user-dropdown-trigger {
        padding: 8px;
    }

    .back-link span:last-child {
        display: none;
    }

    .back-link {
        padding: 8px;
    }
}

/* ========== 减少动画偏好 ========== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========== 用户数量限制显示 ========== */
.stat-limit {
    font-size: 0.7em;
    color: var(--text-secondary, #6b7280);
    font-weight: 400;
    transition: color 0.3s ease;
}

.limit-hint {
    font-size: 0.8em;
    color: var(--text-tertiary, #9ca3af);
}

/* 警告状态：接近上限 (80%+) */
.stat-limit.limit-warning {
    color: var(--warning-color, #f59e0b);
}

/* 危险状态：已达上限 (100%) */
.stat-limit.limit-danger {
    color: var(--danger-color, #ef4444);
    animation: limitPulse 1.5s ease-in-out infinite;
}

@keyframes limitPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}