:root{--color-primary: #4f46e5;--color-primary-hover: #6366f1;--color-primary-light: #818cf8;--color-primary-bg: #eef2ff;--color-primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);--color-success: #10b981;--color-success-bg: #ecfdf5;--color-danger: #ef4444;--color-danger-hover: #f87171;--color-danger-bg: #fef2f2;--color-warning: #f59e0b;--color-warning-bg: #fffbeb;--color-info: #3b82f6;--color-info-bg: #eff6ff;--color-bg: #f8fafc;--color-bg-secondary: #f1f5f9;--color-bg-tertiary: #e2e8f0;--color-bg-container: #ffffff;--color-border: #e2e8f0;--color-border-light: #f1f5f9;--color-text: #1e293b;--color-text-secondary: #64748b;--color-text-tertiary: #94a3b8;--color-text-disabled: #cbd5e1;--radius-sm: 6px;--radius: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow: 0 1px 3px rgba(0, 0, 0, .1), 0 1px 2px rgba(0, 0, 0, .06);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--shadow-glow: 0 0 20px rgba(79, 70, 229, .15);--navbar-height: 64px;--content-max-width: 1000px;--sidebar-width: 260px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition: .2s cubic-bezier(.4, 0, .2, 1);--transition-slow: .3s cubic-bezier(.4, 0, .2, 1)}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:var(--font-family);font-size:14px;line-height:1.6;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{margin:0 0 .5em;font-weight:600;color:var(--color-text);letter-spacing:-.02em}h1{font-size:28px;line-height:1.2}h2{font-size:22px}h3{font-size:18px}h4{font-size:16px}p{margin:0 0 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var(--transition-fast)}.navbar-link:hover,.navbar-link.active{color:var(--color-primary);background:var(--color-primary-bg)}.navbar-user{display:flex;align-items:center;gap:12px;padding-left:16px;border-left:1px solid var(--color-border);margin-left:8px}.navbar-avatar{width:36px;height:36px;border-radius:var(--radius-full);background:var(--color-primary-gradient);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:14px}.navbar-logout{padding:8px;border:none;background:none;color:var(--color-text-tertiary);cursor:pointer;border-radius:var(--radius);display:flex;align-items:center;transition:all var(--transition-fast)}.navbar-logout:hover{color:var(--color-danger);background:var(--color-danger-bg)}.main-content{margin-top:var(--navbar-height);padding:32px;min-height:calc(100vh - var(--navbar-height))}.page-container{max-width:var(--content-max-width);margin:0 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#4f46e540;color:#fff}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{background:var(--color-primary);opacity:.6;box-shadow:none;color:#fff}.btn-secondary{background:var(--color-bg-secondary);border-color:transparent;color:var(--color-text)}.btn-secondary:hover{background:var(--color-bg-tertiary);border-color:transparent;color:var(--color-text)}.btn-ghost{background:transparent;border:none;color:var(--color-text-secondary)}.btn-ghost:hover{background:var(--color-bg-secondary);color:var(--color-text);border:none}.btn-danger{color:var(--color-danger);border-color:var(--color-danger);background:#fff}.btn-danger:hover{background:var(--color-danger);border-color:var(--color-danger);color:#fff}.btn-sm{height:32px;padding:0 12px;font-size:13px}.btn-lg{height:48px;padding:0 28px;font-size:16px;border-radius:var(--radius-lg)}.btn-block{width:100%}.btn-icon{width:40px;padding:0}.card{background:var(--color-bg-container);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:all var(--transition);padding:24px}.card:hover{box-shadow:var(--shadow-md)}.card-header{display:flex;align-items:center;gap:12px;padding-bottom:16px;margin-bottom:16px;border-bottom:1px solid var(--color-border-light);font-weight:600;font-size:16px;color:var(--color-text)}.card-header svg{width:20px;height:20px;color:var(--color-primary)}.form-group{margin-bottom:20px}.form-label{display:block;margin-bottom:8px;font-size:14px;font-weight:500;color:var(--color-text)}.form-hint{margin-top:6px;font-size:13px;color:var(--color-text-tertiary)}.input{width:100%;height:44px;padding:10px 14px;font-size:14px;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg-container);color:var(--color-text);transition:all var(--transition-fast)}.input::placeholder{color:var(--color-text-tertiary)}.input:hover{border-color:var(--color-text-tertiary)}.input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-bg)}.input:disabled{background:var(--color-bg-secondary);color:var(--color-text-tertiary);cursor:not-allowed}.input.error{border-color:var(--color-danger)}.input.error:focus{box-shadow:0 0 0 3px var(--color-danger-bg)}.textarea{width:100%;min-height:120px;padding:12px 14px;font-size:14px;font-family:inherit;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg-container);color:var(--color-text);resize:vertical;transition:all var(--transition-fast);line-height:1.6}.textarea::placeholder{color:var(--color-text-tertiary)}.textarea:hover{border-color:var(--color-text-tertiary)}.textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-bg)}.select-native{width:100%;height:44px;padding:10px 40px 10px 14px;font-size:14px;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg-container);color:var(--color-text);cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 6l3.5 4 3.5-4z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;transition:all var(--transition-fast)}.select-native:hover{border-color:var(--color-text-tertiary)}.select-native:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-bg)}.select-with-color{position:relative;display:flex;align-items:center}.select-with-color .color-dot{position:absolute;left:12px;width:10px;height:10px;border-radius:50%;z-index:1;pointer-events:none}.select-with-color select{padding-left:32px}.form-error{color:var(--color-danger);font-size:13px;margin-top:6px;display:flex;align-items:center;gap:4px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}.form-actions{margin-top:24px;padding-top:20px;border-top:1px solid var(--color-border-light)}.password-wrapper{position:relative}.password-wrapper .input{padding-right:44px}.password-toggle{position:absolute;right:4px;top:50%;transform:translateY(-50%);background:none;border:none;cursor:pointer;color:var(--color-text-tertiary);padding:8px;display:flex;align-items:center;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.password-toggle:hover{color:var(--color-text);background:var(--color-bg-secondary)}.status-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;font-size:12px;font-weight:600;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.02em}.priority-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;font-size:12px;font-weight:500;border-radius:var(--radius-sm);border:1px solid currentColor;background:transparent}.type-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;font-size:12px;font-weight:500;border-radius:var(--radius-sm);background:var(--color-bg-secondary);color:var(--color-text-secondary)}.type-icon{font-size:14px}.alert{padding:14px 18px;border-radius:var(--radius);margin-bottom:20px;font-size:14px;display:flex;align-items:flex-start;gap:12px}.alert-error{background:var(--color-danger-bg);color:var(--color-danger);border:1px solid #fecaca}.alert-success{background:var(--color-success-bg);color:#059669;border:1px solid #a7f3d0}.alert-info{background:var(--color-info-bg);color:#2563eb;border:1px solid #bfdbfe}.alert-warning{background:var(--color-warning-bg);color:#b45309;border:1px solid #fde68a}.modal-backdrop{position:fixed;inset:0;background:#0f172a99;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn var(--transition) ease;padding:24px}.modal{background:var(--color-bg-container);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);width:100%;max-width:480px;max-height:calc(100vh - 48px);overflow:hidden;display:flex;flex-direction:column;animation:modalSlideIn var(--transition) ease}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--color-border-light)}.modal-title{font-weight:600;font-size:18px;color:var(--color-text)}.modal-header-close{border:none;background:none;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius);color:var(--color-text-tertiary);cursor:pointer;transition:all var(--transition-fast)}.modal-header-close:hover{background:var(--color-bg-secondary);color:var(--color-text)}.modal-body{padding:24px;overflow-y:auto}.modal-footer{display:flex;justify-content:flex-end;gap:12px;padding:16px 24px;border-top:1px solid var(--color-border-light);background:var(--color-bg-secondary)}.toast-container{position:fixed;top:80px;right:24px;z-index:2000;display:flex;flex-direction:column;gap:12px;pointer-events:none}.toast{display:flex;align-items:center;gap:12px;padding:14px 20px;background:var(--color-bg-container);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);font-size:14px;font-weight:500;animation:toastSlideIn var(--transition-slow) ease;pointer-events:auto;min-width:280px;border-left:4px solid}.toast-success{border-left-color:var(--color-success);color:var(--color-success)}.toast-error{border-left-color:var(--color-danger);color:var(--color-danger)}.toast-warning{border-left-color:var(--color-warning);color:var(--color-warning)}.toast-info{border-left-color:var(--color-info);color:var(--color-info)}.ticket-list{display:flex;flex-direction:column;gap:12px}.ticket-card{display:block;padding:20px 24px;background:var(--color-bg-container);border:1px solid var(--color-border);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition);text-decoration:none;color:inherit}.ticket-card:hover{border-color:var(--color-primary-light);box-shadow:var(--shadow-md),var(--shadow-glow);transform:translateY(-2px)}.ticket-card:active{transform:translateY(0)}.ticket-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.ticket-number{font-size:13px;font-weight:600;color:var(--color-text-tertiary)}.ticket-card-title{font-size:16px;font-weight:600;color:var(--color-text);margin:0 0 12px;line-height:1.4}.ticket-card-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--color-text-secondary)}.status-tabs{display:flex;gap:8px;margin-bottom:24px;padding:4px;background:var(--color-bg-secondary);border-radius:var(--radius-lg);width:fit-content}.status-tab{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;font-size:14px;font-weight:500;color:var(--color-text-secondary);background:transparent;border:none;border-radius:var(--radius);cursor:pointer;transition:all var(--transition-fast)}.status-tab:hover{color:var(--color-text);background:var(--color-bg-container)}.status-tab.active{color:var(--color-primary);background:var(--color-bg-container);box-shadow:var(--shadow-sm)}.status-tab-dot{width:8px;height:8px;border-radius:50%}.ticket-detail{max-width:900px}.ticket-detail-header{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;background:var(--color-bg-container);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:24px;margin-bottom:24px}.ticket-detail-title{font-size:22px;font-weight:600;margin:8px 0 12px;color:var(--color-text);line-height:1.3}.ticket-detail-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:14px;color:var(--color-text-secondary)}.conversation-thread{display:flex;flex-direction:column;gap:16px;margin-bottom:24px}.message{padding:20px;border-radius:var(--radius-lg);max-width:85%}.message-customer{background:linear-gradient(135deg,var(--color-primary) 0%,#7c3aed 100%);color:#fff;margin-left:auto;border-bottom-right-radius:var(--radius-sm)}.message-agent{background:var(--color-bg-container);border:1px solid var(--color-border);margin-right:auto;border-bottom-left-radius:var(--radius-sm)}.message-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;font-size:13px}.message-author{font-weight:600}.message-customer .message-author{color:#fff}.message-agent .message-author{color:var(--color-text)}.message-time{opacity:.7}.message-content{line-height:1.6;white-space:pre-wrap}.message-attachments{margin-top:16px;padding-top:16px;border-top:1px solid rgba(255,255,255,.2);display:flex;flex-direction:column;gap:8px}.message-agent .message-attachments{border-top-color:var(--color-border)}.attachment-link{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;background:#ffffff26;border-radius:var(--radius-sm);font-size:13px;color:inherit;border:none;cursor:pointer;transition:all var(--transition-fast);text-align:left}.attachment-link:hover{background:#ffffff40}.message-agent .attachment-link{background:var(--color-bg-secondary);color:var(--color-text)}.message-agent .attachment-link:hover{background:var(--color-bg-tertiary)}.attachment-size{opacity:.7;font-size:12px}.reply-form{background:var(--color-bg-container);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow-sm)}.reply-textarea{width:100%;min-height:100px;padding:14px;font-size:14px;font-family:inherit;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg-container);color:var(--color-text);resize:vertical;transition:all var(--transition-fast);line-height:1.6}.reply-textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-bg)}.attachment-preview-list{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.attachment-preview{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;background:var(--color-bg-secondary);border-radius:var(--radius-sm);font-size:13px;color:var(--color-text)}.attachment-remove{background:none;border:none;padding:2px;cursor:pointer;color:var(--color-text-tertiary);display:flex;transition:color var(--transition-fast)}.attachment-remove:hover{color:var(--color-danger)}.reply-actions{display:flex;justify-content:space-between;align-items:center;margin-top:16px;padding-top:16px;border-top:1px solid var(--color-border-light)}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(135deg,#f8fafc,#e0e7ff,#f8fafc)}.auth-card{width:100%;max-width:440px;background:var(--color-bg-container);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);padding:48px 40px}.auth-logo{text-align:center;margin-bottom:32px}.auth-logo span{font-size:28px;font-weight:700;background:var(--color-primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.auth-title{text-align:center;font-size:24px;font-weight:600;margin-bottom:8px;color:var(--color-text)}.auth-subtitle{text-align:center;color:var(--color-text-secondary);margin-bottom:32px;font-size:15px}.auth-footer{text-align:center;margin-top:28px;color:var(--color-text-secondary);font-size:14px}.auth-footer a{font-weight:500}.empty-state{text-align:center;padding:64px 32px;background:var(--color-bg-container);border:1px solid var(--color-border);border-radius:var(--radius-lg)}.empty-state svg{width:64px;height:64px;color:var(--color-text-disabled);margin-bottom:20px}.empty-state h3{font-size:18px;font-weight:600;margin-bottom:8px;color:var(--color-text)}.empty-state p{color:var(--color-text-secondary);margin-bottom:24px}.spinner{width:24px;height:24px;border:2px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}.spinner-container{display:flex;justify-content:center;align-items:center;padding:64px}.pagination{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:32px}.pagination-btn{min-width:40px;height:40px;padding:0 14px;font-size:14px;font-weight:500;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg-container);color:var(--color-text);cursor:pointer;transition:all var(--transition-fast)}.pagination-btn:hover:not(:disabled){border-color:var(--color-primary);color:var(--color-primary)}.pagination-btn:disabled{color:var(--color-text-disabled);cursor:not-allowed}.pagination-info{padding:0 16px;font-size:14px;color:var(--color-text-secondary)}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}.page-title{font-size:28px;font-weight:700;margin:0;letter-spacing:-.02em}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes modalSlideIn{0%{opacity:0;transform:scale(.95) translateY(-10px)}to{opacity:1;transform:scale(1) translateY(0)}}@keyframes toastSlideIn{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes spin{to{transform:rotate(360deg)}}.flex{display:flex}.flex-between{display:flex;justify-content:space-between;align-items:center}.flex-center{display:flex;align-items:center;justify-content:center}.gap-8{gap:8px}.gap-16{gap:16px}.gap-24{gap:24px}.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.text-center{text-align:center}.text-secondary{color:var(--color-text-secondary)}@media(max-width:768px){.navbar{padding:0 16px}.navbar-link span{display:none}.main-content{padding:20px 16px}.page-header{flex-direction:column;align-items:flex-start;gap:16px}.status-tabs{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.ticket-detail-header{flex-direction:column}.form-row{grid-template-columns:1fr}.message{max-width:95%}.auth-card{padding:32px 24px}.ticket-card-meta{flex-direction:column;align-items:flex-start;gap:8px}}.status-open{background:#dbeafe;color:#1e40af}.status-pending,.status-in-progress{background:#fef3c7;color:#92400e}.status-resolved{background:#d1fae5;color:#065f46}.status-closed{background:#f3f4f6;color:#4b5563}