:root{--color-bg: #f8fafc;--color-surface: #ffffff;--color-border: #e2e8f0;--color-text: #1e293b;--color-text-secondary: #64748b;--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-primary-light: #eff6ff;--color-success: #16a34a;--color-warning: #d97706;--color-danger: #dc2626;--radius: 8px;--shadow-sm: 0 1px 2px rgba(0,0,0,.05);--shadow-md: 0 4px 6px -1px rgba(0,0,0,.1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.6;-webkit-font-smoothing:antialiased}.app-layout{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--color-surface);border-right:1px solid var(--color-border);padding:24px 16px;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:10}.sidebar-logo{font-size:22px;font-weight:700;color:var(--color-primary);padding:0 8px 24px;border-bottom:1px solid var(--color-border);margin-bottom:16px}.sidebar-nav{display:flex;flex-direction:column;gap:2px;flex:1}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius);color:var(--color-text-secondary);text-decoration:none;font-size:14px;font-weight:500;cursor:pointer;transition:all .15s}.nav-item:hover{background:var(--color-primary-light);color:var(--color-primary)}.nav-item.active{background:var(--color-primary-light);color:var(--color-primary);font-weight:600}.sidebar-user{padding:12px;border-top:1px solid var(--color-border);margin-top:auto}.sidebar-user-name{font-size:14px;font-weight:600}.sidebar-user-email{font-size:12px;color:var(--color-text-secondary)}.main-content{margin-left:260px;flex:1;padding:32px;max-width:1200px}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm)}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}.page-header{margin-bottom:24px}.page-header h1{font-size:24px;font-weight:700;margin-bottom:4px}.page-header p{color:var(--color-text-secondary);font-size:14px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius);font-size:14px;font-weight:500;border:none;cursor:pointer;transition:all .15s;text-decoration:none}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-hover)}.btn-secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover{background:var(--color-bg)}.btn-sm{padding:4px 10px;font-size:13px}.form-group{margin-bottom:16px}.form-label{display:block;font-size:14px;font-weight:500;margin-bottom:4px}.form-input{width:100%;padding:8px 12px;border:1px solid var(--color-border);border-radius:var(--radius);font-size:14px;font-family:inherit;transition:border-color .15s}.form-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:12px;font-size:12px;font-weight:500}.badge-blue{background:#dbeafe;color:#1d4ed8}.badge-green{background:#dcfce7;color:#16a34a}.badge-amber{background:#fef3c7;color:#d97706}.badge-red{background:#fee2e2;color:#dc2626}.badge-gray{background:#f1f5f9;color:#475569}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:16px 20px}.stat-label{font-size:13px;color:var(--color-text-secondary);font-weight:500}.stat-value{font-size:28px;font-weight:700;margin-top:4px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}th{text-align:left;padding:10px 12px;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-secondary);border-bottom:1px solid var(--color-border)}td{padding:12px;border-bottom:1px solid var(--color-border);font-size:14px}tr:hover{background:var(--color-bg)}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--color-bg)}.login-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px;padding:40px;width:100%;max-width:420px;box-shadow:var(--shadow-md)}.login-card h1{font-size:24px;margin-bottom:4px}.login-card p{color:var(--color-text-secondary);font-size:14px;margin-bottom:24px}.error-message{background:#fee2e2;color:#dc2626;padding:8px 12px;border-radius:var(--radius);font-size:13px;margin-bottom:16px}.empty-state{text-align:center;padding:48px 24px;color:var(--color-text-secondary)}.empty-state h3{font-size:16px;color:var(--color-text);margin-bottom:4px}.event-card{padding:16px 20px}.event-card-date{font-size:13px;color:var(--color-primary);font-weight:600;margin-bottom:4px}.event-card-title{font-size:16px;font-weight:600;margin-bottom:6px}.event-card-meta{display:flex;gap:16px;font-size:13px;color:var(--color-text-secondary)}.notification-bell{position:relative;background:none;border:none;cursor:pointer;padding:6px;color:var(--color-text-secondary);transition:color .15s}.notification-bell:hover{color:var(--color-primary)}.notification-badge{position:absolute;top:2px;right:2px;width:16px;height:16px;border-radius:50%;background:var(--color-danger);color:#fff;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1}.toast-container{position:fixed;bottom:24px;right:24px;z-index:100;display:flex;flex-direction:column;gap:8px}.toast{background:var(--color-text);color:#fff;padding:12px 20px;border-radius:var(--radius);font-size:14px;box-shadow:var(--shadow-md);animation:slideUp .3s ease-out;max-width:360px}.toast-success{border-left:4px solid var(--color-success)}.toast-error{border-left:4px solid var(--color-danger)}@keyframes slideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.skeleton{background:linear-gradient(90deg,var(--color-border) 25%,#f1f5f9 50%,var(--color-border) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:56px;background:var(--color-surface);border-bottom:1px solid var(--color-border);padding:0 16px;align-items:center;justify-content:space-between;z-index:20}.mobile-menu-btn{background:none;border:none;cursor:pointer;padding:8px;color:var(--color-text)}.sidebar-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;z-index:9}.avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px;flex-shrink:0}.avatar-sm{width:28px;height:28px;font-size:12px}.avatar-lg{width:48px;height:48px;font-size:18px}.avatar-blue{background:#dbeafe;color:#1d4ed8}.avatar-green{background:#dcfce7;color:#16a34a}.avatar-amber{background:#fef3c7;color:#d97706}.avatar-purple{background:#ede9fe;color:#7c3aed}@media(max-width:768px){.mobile-header{display:flex}.sidebar{transform:translate(-100%);transition:transform .25s ease;z-index:20}.sidebar.open{transform:translate(0)}.sidebar-overlay.open{display:block}.main-content{margin-left:0;padding:72px 16px 24px}.stats-grid{grid-template-columns:repeat(2,1fr)}.card-grid{grid-template-columns:1fr}.page-header h1{font-size:20px}}@media(max-width:480px){.stats-grid{grid-template-columns:1fr}.login-card{margin:16px;padding:24px}}@media print{.sidebar,.mobile-header{display:none}.main-content{margin-left:0}}.content-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--color-border)}.btn:focus-visible,.nav-item:focus-visible,.form-input:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.dropdown{position:relative}.dropdown-menu{position:absolute;top:100%;right:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-md);min-width:200px;z-index:50;padding:4px}.dropdown-item{display:block;width:100%;padding:8px 12px;border:none;background:none;text-align:left;font-size:14px;cursor:pointer;border-radius:4px;color:var(--color-text)}.dropdown-item:hover{background:var(--color-bg)}.tab-group{display:flex;gap:0;border-bottom:2px solid var(--color-border);margin-bottom:24px}.tab{padding:10px 16px;font-size:14px;font-weight:500;color:var(--color-text-secondary);cursor:pointer;border:none;background:none;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .15s}.tab:hover{color:var(--color-text)}.tab.active{color:var(--color-primary);border-bottom-color:var(--color-primary);font-weight:600}.progress-bar{height:6px;background:var(--color-border);border-radius:3px;overflow:hidden}.progress-fill{height:100%;background:var(--color-primary);border-radius:3px;transition:width .3s ease}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:50;animation:fadeIn .2s ease}.modal{background:var(--color-surface);border-radius:12px;padding:24px;width:100%;max-width:520px;max-height:80vh;overflow-y:auto;box-shadow:0 20px 60px #0003;animation:scaleIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.divider{height:1px;background:var(--color-border);margin:16px 0}.fade-enter{opacity:0}.fade-enter-active{opacity:1;transition:opacity .3s}