:root{--bg-primary: #0f0f23;--bg-secondary: #1a1a2e;--bg-tertiary: #252547;--text-primary: #ffffff;--text-secondary: #a0a0b8;--text-muted: #6b6b80;--accent-primary: #6366f1;--accent-secondary: #8b5cf6;--accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--success: #22c55e;--warning: #f59e0b;--error: #ef4444;--border-color: rgba(255, 255, 255, .08);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh}#root{min-height:100vh}.app-layout{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:1000;transition:transform .3s cubic-bezier(.4,0,.2,1)}.sidebar-header{padding:24px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between}.sidebar-close-btn{display:none;background:none;border:none;color:var(--text-secondary);font-size:2rem;cursor:pointer;line-height:1;padding:8px}.sidebar-logo{display:flex;align-items:center;gap:12px;font-size:1.5rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar-logo-icon{width:40px;height:40px;background:var(--accent-gradient);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.2rem;-webkit-text-fill-color:white}.sidebar-nav{flex:1;padding:16px;overflow-y:auto}.nav-section{margin-bottom:24px}.nav-section-title{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);padding:0 12px;margin-bottom:8px}.nav-link{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:var(--radius-md);text-decoration:none;color:var(--text-secondary);transition:all .2s ease;font-weight:500}.nav-link:hover{background:var(--bg-tertiary);color:var(--text-primary)}.nav-link.active{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-sm)}.nav-link-icon{font-size:1.2rem;width:24px;text-align:center}.nav-link-badge{margin-left:auto;background:var(--error);color:#fff;font-size:.75rem;padding:2px 8px;border-radius:10px;font-weight:600}.main-content{flex:1;margin-left:260px;min-height:100vh;background:var(--bg-primary)}.page-header{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);padding:20px 32px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50}.page-title{font-size:1.5rem;font-weight:600}.page-subtitle{font-size:.875rem;color:var(--text-secondary);margin-top:4px}.page-content{padding:32px}.card{background:var(--bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--border-color);overflow:hidden;transition:all .2s ease}.card.active{border-color:var(--primary);box-shadow:0 0 0 2px #6366f133}.card-header{padding:20px 24px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between}.card-title{font-size:1.1rem;font-weight:600}.card-body{padding:24px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px;margin-bottom:32px}.stat-card{background:var(--bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--border-color);padding:24px;transition:all .3s ease}.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--accent-primary)}.stat-icon{width:48px;height:48px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:16px}.stat-icon.users{background:#6366f133}.stat-icon.words{background:#22c55e33}.stat-icon.categories{background:#f59e0b33}.stat-icon.feedback{background:#ef444433}.stat-value{font-size:2rem;font-weight:700;margin-bottom:4px}.stat-label{color:var(--text-secondary);font-size:.875rem}.stat-change{display:flex;align-items:center;gap:4px;margin-top:8px;font-size:.875rem}.stat-change.positive{color:var(--success)}.stat-change.negative{color:var(--error)}.table-container{overflow-x:auto;-webkit-overflow-scrolling:touch}.card>table{display:block;overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:16px;text-align:left;border-bottom:1px solid var(--border-color)}th{font-weight:600;color:var(--text-secondary);font-size:.875rem;text-transform:uppercase;letter-spacing:.05em}tr:hover td{background:var(--bg-tertiary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:var(--radius-md);font-weight:600;font-size:.875rem;cursor:pointer;transition:all .2s ease;border:none;text-decoration:none}.btn-primary{background:var(--accent-gradient);color:#fff}.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--bg-secondary);border-color:var(--accent-primary)}.btn-danger{background:var(--error);color:#fff}.btn-sm{padding:6px 12px;font-size:.8rem}.btn-icon{padding:8px;width:36px;height:36px}.form-group{margin-bottom:20px}.form-label{display:block;font-weight:500;margin-bottom:8px;color:var(--text-secondary)}.form-input,.form-textarea,.form-select{width:100%;padding:12px 16px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:1rem;transition:all .2s ease}.form-input:focus,.form-textarea:focus,.form-select:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f133}.form-textarea{min-height:120px;resize:vertical}.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:20px;font-size:.75rem;font-weight:600;text-transform:uppercase}.badge-pending{background:#f59e0b33;color:var(--warning)}.badge-resolved{background:#22c55e33;color:var(--success)}.badge-rejected{background:#ef444433;color:var(--error)}.badge-review{background:#6366f133;color:var(--accent-primary)}.search-box{position:relative;max-width:400px}.search-input{width:100%;padding:12px 16px 12px 44px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem}.search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-muted)}.modal-overlay{position:fixed;inset:0;background:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.modal{background:var(--bg-secondary);border-radius:var(--radius-xl);border:1px solid var(--border-color);width:90%;max-width:600px;max-height:90vh;overflow-y:auto;animation:slideUp .3s ease}.modal-header{padding:24px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between}.modal-title{font-size:1.25rem;font-weight:600}.modal-close{background:none;border:none;color:var(--text-secondary);font-size:1.5rem;cursor:pointer;padding:4px;line-height:1}.modal-body{padding:24px}.modal-footer{padding:16px 24px;border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:12px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);background-image:radial-gradient(circle at 20% 80%,rgba(99,102,241,.1) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(139,92,246,.1) 0%,transparent 50%)}.login-card{background:var(--bg-secondary);border-radius:var(--radius-xl);border:1px solid var(--border-color);padding:48px;width:100%;max-width:420px;box-shadow:var(--shadow-lg)}.login-logo{text-align:center;margin-bottom:32px}.login-logo h1{font-size:2rem;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.login-logo p{color:var(--text-muted);margin-top:8px}.mobile-header{display:none;height:64px;background:var(--bg-secondary);border-bottom:1px solid var(--border-color);padding:0 16px;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:500}.hamburger-menu{background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer;padding:8px}.sidebar-overlay{position:fixed;inset:0;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:900;animation:fadeIn .2s ease}@media(max-width:768px){.app-layout{flex-direction:column}.mobile-header{display:flex}.sidebar{transform:translate(-100%);width:280px;box-shadow:var(--shadow-lg)}.sidebar.open{transform:translate(0)}.sidebar-close-btn{display:block}.main-content{margin-left:0}.page-header{padding:16px 20px;flex-direction:column;align-items:flex-start;gap:12px}.page-header .btn{width:100%}.page-content{padding:16px}.stats-grid{grid-template-columns:1fr;gap:16px}.modal{width:95%;max-height:85vh}.login-card{padding:32px 24px;margin:16px}.page-content>div[style*="display: flex"],.page-content>div.filters-container{flex-direction:column!important;gap:12px!important;align-items:stretch!important}.search-box,.form-select,.form-input,.form-textarea{width:100%!important;max-width:none!important;margin:0!important}.page-content div[style*="display: grid"],.stats-grid{grid-template-columns:1fr!important;gap:16px!important}.modal div[style*="display: flex"][style*=border-bottom]{overflow-x:auto;white-space:nowrap;padding:0 16px!important;scrollbar-width:none;-ms-overflow-style:none}.modal div[style*="display: flex"][style*=border-bottom]::-webkit-scrollbar{display:none}.modal button[style*="padding: 12px 20px"]{padding:10px 12px!important;flex-shrink:0}.modal-body div[style*="display: flex"]{flex-direction:column!important;gap:16px!important;align-items:stretch!important}.modal-body div[style*=grid-template-columns]{grid-template-columns:1fr!important}.modal-footer{flex-direction:column-reverse;gap:8px;padding:16px!important}.modal-footer .btn{width:100%;margin:0!important}.table-container{margin:0 -16px;padding:0 16px}th,td{padding:12px 8px;font-size:.875rem}}.messages-container{display:flex;gap:20px;height:calc(100vh - 200px)}.messages-sidebar{width:350px;display:flex;flex-direction:column;overflow:hidden}.messages-main{flex:1;display:flex;flex-direction:column;overflow:hidden}.user-list-item{padding:16px;border-bottom:1px solid var(--border-color);cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background-color .2s ease}.user-list-item:hover,.user-list-item.selected{background-color:var(--bg-tertiary)}.message-bubble{padding:10px 14px;border-radius:var(--radius-md);max-width:70%;word-break:break-word}.message-bubble.admin{background:var(--primary);color:#fff}.message-bubble.user{background:var(--bg-tertiary);color:inherit}.mobile-back-btn{display:none;background:none;border:none;color:var(--text-primary);font-size:1.2rem;padding:8px;margin-right:8px;cursor:pointer;display:flex;align-items:center;justify-content:center}.mobile-back-btn:hover{background-color:var(--bg-tertiary);border-radius:50%}@media(max-width:768px){.messages-container{height:calc(100vh - 140px);gap:0}.messages-sidebar{width:100%;height:100%;border-right:none}.messages-main{width:100%;position:fixed;inset:64px 0 0;background:var(--bg-primary);transform:translate(100%);transition:transform .3s ease-in-out;z-index:50}.messages-container.chat-active .messages-main{transform:translate(0)}.messages-container.chat-active .messages-sidebar{display:none}.mobile-back-btn{display:inline-flex}.message-input-area{padding:12px}.message-input-area textarea{min-height:40px;height:40px}}