:root{--color-bg-primary: #f8fafc;--color-bg-secondary: #ffffff;--color-bg-tertiary: #f1f5f9;--color-primary: #6366f1;--color-primary-light: #818cf8;--color-primary-dark: #4f46e5;--color-success: #10b981;--color-warning: #f59e0b;--color-error: #ef4444;--color-info: #3b82f6;--color-text-primary: #0f172a;--color-text-secondary: #475569;--color-text-muted: #94a3b8;--color-border: #e2e8f0;--color-sidebar: #1e293b;--color-sidebar-text: #f8fafc;--color-sidebar-hover: #334155;--gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-size-xs: 12px;--font-size-sm: 14px;--font-size-md: 16px;--font-size-lg: 18px;--font-size-xl: 20px;--font-size-2xl: 24px;--font-size-3xl: 30px;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 24px;--spacing-2xl: 32px;--spacing-3xl: 48px;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--transition-fast: .15s ease;--transition-normal: .25s ease;--sidebar-width: 260px;--header-height: 64px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{font-family:var(--font-family);font-size:var(--font-size-md);line-height:1.5;color:var(--color-text-primary);background:var(--color-bg-primary);-webkit-font-smoothing:antialiased}#root{height:100%}h1,h2,h3,h4{font-weight:600;line-height:1.3}h1{font-size:var(--font-size-3xl)}h2{font-size:var(--font-size-2xl)}h3{font-size:var(--font-size-xl)}h4{font-size:var(--font-size-lg)}.layout{display:flex;height:100vh}.layout__main{flex:1;display:flex;flex-direction:column;overflow:hidden}.layout__content{flex:1;overflow-y:auto;padding:var(--spacing-xl)}.sidebar{width:var(--sidebar-width);background:var(--color-sidebar);color:var(--color-sidebar-text);display:flex;flex-direction:column}.sidebar__logo{padding:var(--spacing-xl);display:flex;align-items:center;gap:var(--spacing-md);border-bottom:1px solid rgba(255,255,255,.1)}.sidebar__logo-icon{width:40px;height:40px;background:var(--gradient-primary);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center}.sidebar__logo-text{font-size:var(--font-size-lg);font-weight:700}.sidebar__nav{flex:1;padding:var(--spacing-lg);overflow-y:auto}.sidebar__section{margin-bottom:var(--spacing-xl)}.sidebar__section-title{font-size:var(--font-size-xs);text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-muted);padding:var(--spacing-sm) var(--spacing-md);margin-bottom:var(--spacing-sm)}.sidebar__link{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-md);color:var(--color-sidebar-text);text-decoration:none;font-size:var(--font-size-sm);transition:all var(--transition-fast)}.sidebar__link:hover{background:var(--color-sidebar-hover)}.sidebar__link--active{background:var(--color-primary)}.sidebar__link-badge{margin-left:auto;background:var(--color-primary);color:#fff;padding:2px 8px;border-radius:10px;font-size:var(--font-size-xs);font-weight:600}.sidebar__link--active .sidebar__link-badge{background:#fff3}.header{height:var(--header-height);background:var(--color-bg-secondary);border-bottom:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between;padding:0 var(--spacing-xl)}.header__title{font-size:var(--font-size-xl);font-weight:600}.header__actions{display:flex;align-items:center;gap:var(--spacing-lg)}.header__search{display:flex;align-items:center;gap:var(--spacing-sm);background:var(--color-bg-tertiary);padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-md);width:300px}.header__search input{border:none;background:none;outline:none;flex:1;font-size:var(--font-size-sm);color:var(--color-text-primary)}.header__user{display:flex;align-items:center;gap:var(--spacing-md)}.header__avatar{width:36px;height:36px;background:var(--gradient-primary);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:var(--font-size-sm)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.stat-card{background:var(--color-bg-secondary);border-radius:var(--radius-lg);padding:var(--spacing-xl);border:1px solid var(--color-border)}.stat-card__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-md)}.stat-card__icon{width:48px;height:48px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center}.stat-card__icon--primary{background:#6366f11a;color:var(--color-primary)}.stat-card__icon--success{background:#10b9811a;color:var(--color-success)}.stat-card__icon--warning{background:#f59e0b1a;color:var(--color-warning)}.stat-card__icon--error{background:#ef44441a;color:var(--color-error)}.stat-card__value{font-size:var(--font-size-3xl);font-weight:700;margin-bottom:var(--spacing-xs)}.stat-card__label{color:var(--color-text-secondary);font-size:var(--font-size-sm)}.stat-card__trend{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:2px 8px;border-radius:10px;font-size:var(--font-size-xs);font-weight:500}.stat-card__trend--up{background:#10b9811a;color:var(--color-success)}.stat-card__trend--down{background:#ef44441a;color:var(--color-error)}.card{background:var(--color-bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--color-border);overflow:hidden}.card__header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg) var(--spacing-xl);border-bottom:1px solid var(--color-border)}.card__title{font-size:var(--font-size-lg);font-weight:600}.card__body{padding:var(--spacing-xl)}.table-container{overflow-x:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:var(--spacing-md) var(--spacing-lg);text-align:left;border-bottom:1px solid var(--color-border)}.table th{font-weight:600;font-size:var(--font-size-sm);color:var(--color-text-secondary);background:var(--color-bg-tertiary)}.table tbody tr:hover{background:var(--color-bg-tertiary)}.table tbody tr:last-child td{border-bottom:none}.badge{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:4px 10px;border-radius:20px;font-size:var(--font-size-xs);font-weight:500}.badge--success{background:#10b9811a;color:var(--color-success)}.badge--warning{background:#f59e0b1a;color:var(--color-warning)}.badge--error{background:#ef44441a;color:var(--color-error)}.badge--info{background:#3b82f61a;color:var(--color-info)}.badge--default{background:var(--color-bg-tertiary);color:var(--color-text-secondary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--font-size-sm);font-weight:500;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);border:1px solid transparent}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.btn-secondary{background:var(--color-bg-secondary);color:var(--color-text-primary);border-color:var(--color-border)}.btn-secondary:hover{background:var(--color-bg-tertiary)}.btn-danger{background:var(--color-error);color:#fff}.btn-danger:hover{background:#dc2626}.btn-sm{padding:var(--spacing-xs) var(--spacing-md);font-size:var(--font-size-xs)}.btn-icon{padding:var(--spacing-sm)}.form-group{margin-bottom:var(--spacing-lg)}.form-label{display:block;font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-secondary);margin-bottom:var(--spacing-sm)}.form-input,.form-select{width:100%;padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-sm);color:var(--color-text-primary);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-md);transition:all var(--transition-fast)}.form-input:focus,.form-select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #6366f11a}.form-input::placeholder{color:var(--color-text-muted)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal{background:var(--color-bg-secondary);border-radius:var(--radius-lg);width:100%;max-width:500px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg)}.modal__header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg) var(--spacing-xl);border-bottom:1px solid var(--color-border)}.modal__title{font-size:var(--font-size-lg);font-weight:600}.modal__body{padding:var(--spacing-xl)}.modal__footer{display:flex;justify-content:flex-end;gap:var(--spacing-md);padding:var(--spacing-lg) var(--spacing-xl);border-top:1px solid var(--color-border)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-bg-tertiary)}.login-card{width:100%;max-width:400px;background:var(--color-bg-secondary);border-radius:var(--radius-xl);padding:var(--spacing-2xl);box-shadow:var(--shadow-lg)}.login-card__logo{text-align:center;margin-bottom:var(--spacing-2xl)}.login-card__logo-icon{width:64px;height:64px;background:var(--gradient-primary);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;margin:0 auto var(--spacing-lg)}.login-card__title{font-size:var(--font-size-2xl);font-weight:700;color:var(--color-text-primary)}.login-card__subtitle{color:var(--color-text-secondary);font-size:var(--font-size-sm);margin-top:var(--spacing-xs)}.activity-list{list-style:none}.activity-item{display:flex;gap:var(--spacing-md);padding:var(--spacing-md) 0;border-bottom:1px solid var(--color-border)}.activity-item:last-child{border-bottom:none}.activity-item__icon{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}.activity-item__content{flex:1}.activity-item__title{font-size:var(--font-size-sm);margin-bottom:2px}.activity-item__time{font-size:var(--font-size-xs);color:var(--color-text-muted)}.empty-state{text-align:center;padding:var(--spacing-3xl);color:var(--color-text-muted)}.empty-state__icon{margin-bottom:var(--spacing-lg);opacity:.5}.empty-state__title{font-size:var(--font-size-lg);font-weight:600;color:var(--color-text-primary);margin-bottom:var(--spacing-sm)}.loading-spinner{width:24px;height:24px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.text-muted{color:var(--color-text-muted)}.text-success{color:var(--color-success)}.text-warning{color:var(--color-warning)}.text-error{color:var(--color-error)}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.mb-xl{margin-bottom:var(--spacing-xl)}.settings-page{max-width:800px}.page-header{margin-bottom:var(--spacing-2xl)}.page-header__title{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-sm)}.page-header__title h1{font-size:var(--font-size-2xl)}.page-header__subtitle{color:var(--color-text-secondary);font-size:var(--font-size-sm)}.settings-section{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-xl);margin-bottom:var(--spacing-xl)}.settings-section__header{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}.settings-section__header h2{font-size:var(--font-size-lg);font-weight:600}.settings-section__description{color:var(--color-text-secondary);font-size:var(--font-size-sm);margin-bottom:var(--spacing-xl);line-height:1.6}.image-preview-container{margin-bottom:var(--spacing-xl)}.image-preview{position:relative;border-radius:var(--radius-lg);overflow:hidden;max-height:300px}.image-preview img{width:100%;height:300px;object-fit:cover;display:block}.image-preview__overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition-fast)}.image-preview:hover .image-preview__overlay{opacity:1}.image-placeholder{background:var(--color-bg-tertiary);border:2px dashed var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-3xl);text-align:center;color:var(--color-text-muted)}.image-placeholder p{font-size:var(--font-size-md);font-weight:500;margin:var(--spacing-md) 0 var(--spacing-xs);color:var(--color-text-secondary)}.image-placeholder span{font-size:var(--font-size-sm)}.settings-controls{display:flex;gap:var(--spacing-md);flex-wrap:wrap;margin-bottom:var(--spacing-xl)}.settings-controls label{cursor:pointer}.btn-outline{background:transparent;color:var(--color-text-secondary);border:1px solid var(--color-border)}.btn-outline:hover{background:var(--color-bg-tertiary);border-color:var(--color-text-muted)}.settings-tips{background:var(--color-bg-tertiary);border-radius:var(--radius-md);padding:var(--spacing-lg)}.settings-tips h4{font-size:var(--font-size-sm);font-weight:600;margin-bottom:var(--spacing-md);color:var(--color-text-primary)}.settings-tips ul{list-style:none;margin:0;padding:0}.settings-tips li{font-size:var(--font-size-sm);color:var(--color-text-secondary);padding:var(--spacing-xs) 0;padding-left:var(--spacing-lg);position:relative}.settings-tips li:before{content:"•";position:absolute;left:0;color:var(--color-primary)}.alert{padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-md);margin-bottom:var(--spacing-lg);font-size:var(--font-size-sm)}.alert--success{background:#10b9811a;color:var(--color-success);border:1px solid rgba(16,185,129,.3)}.alert--error{background:#ef44441a;color:var(--color-error);border:1px solid rgba(239,68,68,.3)}.alert--info{background:#3b82f61a;color:var(--color-info);border:1px solid rgba(59,130,246,.3)}