/**
 * 用户中心与权限管理系统
 * 布局样式 - Layout Styles
 */

/* ==================== Page Wrapper ==================== */
.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding-top: var(--header-height);
}

/* ==================== Header ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-100);
    z-index: var(--z-fixed);
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow);
}

.header-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-6);
}

/* Logo */
.header-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    text-decoration: none;
}

.header-logo:hover {
    color: var(--color-gray-900);
}

.header-logo svg {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.header-logo span {
    display: none;
}

@media (min-width: 640px) {
    .header-logo span {
        display: inline;
    }
}

/* Navigation */
.header-nav {
    display: none;
    align-items: center;
    gap: var(--spacing-1);
}

@media (min-width: 768px) {
    .header-nav {
        display: flex;
    }
}

.nav-link {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-600);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

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

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

/* User Menu */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.header-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-2);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.header-user:hover {
    background-color: var(--color-gray-50);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.user-info {
    display: none;
    flex-direction: column;
}

@media (min-width: 640px) {
    .user-info {
        display: flex;
    }
}

.user-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-900);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-vip {
    font-size: var(--font-size-xs);
    color: var(--color-warning);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-gray-100);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
}

.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    transition: background-color var(--transition-fast);
}

.dropdown-item:first-child {
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

.dropdown-item:hover {
    background-color: var(--color-gray-50);
}

.dropdown-item svg {
    width: 18px;
    height: 18px;
    color: var(--color-gray-400);
}

.dropdown-divider {
    height: 1px;
    background-color: var(--color-gray-100);
    margin: var(--spacing-2) 0;
}

/* Notification Badge */
.notification-btn {
    position: relative;
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background-color: var(--color-error);
    color: var(--color-white);
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Mobile Menu Toggle */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-2);
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--color-gray-700);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-white);
    padding: var(--spacing-6);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    z-index: var(--z-fixed);
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

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

.mobile-nav-link svg {
    width: 20px;
    height: 20px;
}

/* ==================== Footer ==================== */
.footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--spacing-12) 0 var(--spacing-6);
    margin-top: auto;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

.footer-section h4 {
    color: var(--color-white);
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer-link {
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-white);
}

.footer-bottom {
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--color-gray-800);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
    text-align: center;
}

@media (min-width: 640px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-copyright {
    font-size: var(--font-size-sm);
}

.footer-bottom-link {
    color: inherit;
    font: inherit;
}

.footer-bottom-link:hover {
    color: var(--color-white);
}

.footer-social {
    display: flex;
    gap: var(--spacing-4);
}

.footer-social a {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-social a:hover {
    color: var(--color-white);
}

.footer-social svg {
    width: 20px;
    height: 20px;
}

/* ==================== Page Header ==================== */
.page-header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-100);
    padding: var(--spacing-8) 0;
}

.page-header-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

@media (min-width: 768px) {
    .page-header-content {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

.page-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.page-breadcrumb a {
    color: var(--color-gray-500);
}

.page-breadcrumb a:hover {
    color: var(--color-primary);
}

.page-breadcrumb span {
    color: var(--color-gray-400);
}

/* ==================== Sidebar Layout ==================== */
.page-with-sidebar {
    display: flex;
    min-height: calc(100vh - var(--header-height));
}

.sidebar {
    width: var(--sidebar-width);
    background-color: var(--color-white);
    border-right: 1px solid var(--color-gray-100);
    flex-shrink: 0;
    display: none;
}

@media (min-width: 1024px) {
    .sidebar {
        display: block;
    }
}

.sidebar-header {
    padding: var(--spacing-5) var(--spacing-5);
    border-bottom: 1px solid var(--color-gray-100);
}

.sidebar-nav {
    padding: var(--spacing-4);
    position: sticky;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    overflow-y: auto;
}

.sidebar-section {
    margin-bottom: var(--spacing-6);
}

.sidebar-section-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-2) var(--spacing-3);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

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

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

.sidebar-link svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.sidebar-link-badge {
    margin-left: auto;
    font-size: var(--font-size-xs);
    padding: 2px 6px;
    background-color: var(--color-error);
    color: var(--color-white);
    border-radius: var(--radius-full);
}

.main-with-sidebar {
    flex: 1;
    padding: var(--spacing-8);
    overflow-x: hidden;
}

@media (max-width: 1023px) {
    .main-with-sidebar {
        padding: var(--spacing-4);
    }
}

/* ==================== Empty State ==================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-12) var(--spacing-6);
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-6);
    color: var(--color-gray-300);
}

.empty-state-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-2);
}

.empty-state-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-6);
}

/* ==================== Section Spacing ==================== */
.section {
    padding: var(--spacing-16) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-12);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-4);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== Auth Pages ==================== */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-6);
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-gray-50) 100%);
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    background-color: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.auth-header {
    padding: var(--spacing-8) var(--spacing-8) var(--spacing-6);
    text-align: center;
}

.auth-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-4);
    color: var(--color-primary);
}

.auth-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-2);
}

.auth-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.auth-body {
    padding: var(--spacing-6) var(--spacing-8) var(--spacing-8);
}

.auth-footer {
    padding: var(--spacing-6) var(--spacing-8);
    background-color: var(--color-gray-50);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    margin: var(--spacing-6) 0;
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background-color: var(--color-gray-200);
}

/* Tab Style for Auth */
.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--color-gray-200);
    margin-bottom: var(--spacing-6);
}

.auth-tab {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-500);
    text-align: center;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.auth-tab:hover {
    color: var(--color-gray-700);
}

.auth-tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* ==================== Feature Cards ==================== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-6);
}

.feature-card {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow);
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-4);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-icon-primary {
    background-color: var(--color-primary-bg);
    color: var(--color-primary);
}

.feature-icon-success {
    background-color: var(--color-success-bg);
    color: var(--color-success);
}

.feature-icon-warning {
    background-color: var(--color-warning-bg);
    color: var(--color-warning);
}

.feature-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-2);
}

.feature-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-4);
}

.feature-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: var(--color-gray-400);
}

/* ==================== Pricing Cards ==================== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
    align-items: stretch;
}

.pricing-card {
    background-color: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow);
    border: 2px solid transparent;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

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

.pricing-card.popular {
    border-color: var(--color-primary);
    position: relative;
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-primary);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: var(--spacing-1) var(--spacing-4);
    border-radius: var(--radius-full);
}

.pricing-header {
    text-align: center;
    padding-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--color-gray-100);
    margin-bottom: var(--spacing-6);
}

.pricing-name {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-2);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-1);
}

.pricing-amount {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

.pricing-unit {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.pricing-features {
    flex: 1;
    margin-bottom: var(--spacing-6);
}

.pricing-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-2) 0;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.pricing-feature svg {
    width: 18px;
    height: 18px;
    color: var(--color-success);
    flex-shrink: 0;
}