:root{--primary: #FF6B6B;--primary-dark: #9C1A1A;--primary-light: #FF8E8E;--primary-bg: #FFF0F0;--primary-glow: rgba(255, 107, 107, .35);--primary-gradient: linear-gradient(135deg, #FF6B6B, #E85A5A);--secondary: #4ECDC4;--secondary-dark: #3DBDB5;--accent: #9B59B6;--success: #22C55E;--success-bg: #F0FDF4;--warning: #F59E0B;--warning-bg: #FFFBEB;--error: #B91C1C;--error-bg: #FEF2F2;--info: #3B82F6;--info-bg: #EFF6FF;--bg: #F5F6FA;--bg-subtle: #ECEEF3;--surface: #FFFFFF;--surface-elevated: #FFFFFF;--sidebar-bg: #0F1117;--sidebar-text: #7C8091;--sidebar-active: #FFFFFF;--sidebar-hover: rgba(255, 255, 255, .06);--sidebar-border: rgba(255, 255, 255, .06);--sidebar-gradient: linear-gradient(180deg, #12141C 0%, #0B0D13 100%);--text: #111827;--text-secondary: #1F2937;--text-muted: #374151;--border: #E5E7EB;--border-light: #F3F4F6;--radius: 8px;--radius-lg: 12px;--radius-xl: 16px;--shadow-sm: 0 1px 2px rgba(0,0,0,.04);--shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -2px rgba(0,0,0,.05);--shadow-lg: 0 10px 25px -3px rgba(0,0,0,.08), 0 4px 6px -4px rgba(0,0,0,.04);--shadow-xl: 0 20px 50px -12px rgba(0,0,0,.15);--shadow-colored: 0 4px 14px var(--primary-glow);--sidebar-width: 256px;--sidebar-width-collapsed: 72px;--header-height: 64px;--transition: .15s cubic-bezier(.4, 0, .2, 1);--transition-fast: .1s cubic-bezier(.4, 0, .2, 1);--transition-slow: .25s cubic-bezier(.4, 0, .2, 1);--transition-spring: .3s cubic-bezier(.34, 1.56, .64, 1);--font-sans: "DM Sans", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "SF Mono", Menlo, monospace;--text-xs: .75rem;--text-sm: .85rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.35rem;--text-2xl: 1.75rem;--text-3xl: 2.25rem}[data-theme=dark]{--bg: #0B0D13;--bg-subtle: #101218;--surface: #151820;--surface-elevated: #1C1F2A;--sidebar-bg: #0B0D13;--sidebar-text: #5A5E6E;--sidebar-hover: rgba(255, 255, 255, .04);--sidebar-border: rgba(255, 255, 255, .05);--sidebar-gradient: linear-gradient(180deg, #0F1117 0%, #080A0F 100%);--text: #E8E9ED;--text-secondary: #8B8D97;--text-muted: #555866;--border: #232631;--border-light: #1A1D27;--shadow-sm: 0 1px 2px rgba(0,0,0,.3);--shadow: 0 1px 3px rgba(0,0,0,.35), 0 1px 2px rgba(0,0,0,.2);--shadow-md: 0 4px 6px rgba(0,0,0,.3), 0 2px 4px rgba(0,0,0,.2);--shadow-lg: 0 10px 25px rgba(0,0,0,.35), 0 4px 6px rgba(0,0,0,.2);--shadow-xl: 0 20px 50px rgba(0,0,0,.5);--shadow-colored: 0 4px 14px rgba(255, 107, 107, .15);--primary-bg: rgba(255, 107, 107, .12);--primary-glow: rgba(255, 107, 107, .25);--success-bg: rgba(34, 197, 94, .12);--warning-bg: rgba(245, 158, 11, .12);--error-bg: rgba(239, 68, 68, .12);--info-bg: rgba(59, 130, 246, .12)}[data-theme=dark] .card,[data-theme=dark] .stat-card,[data-theme=dark] .insight-card,[data-theme=dark] .table-container{background:#151820cc;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-color:#ffffff0d}[data-theme=dark] tr:hover td{background:#ffffff05}[data-theme=dark] th{background:#0b0d1399}[data-theme=dark] .login-page{background:radial-gradient(ellipse at 20% 50%,rgba(255,107,107,.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 20%,rgba(78,205,196,.06) 0%,transparent 50%),linear-gradient(135deg,#0b0d13,#151820)}[data-theme=dark] .login-card{background:#151820d9;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-color:#ffffff14;box-shadow:0 0 40px #ff6b6b0f,var(--shadow-xl)}[data-theme=dark] .schedule-class:hover{background:#ff6b6b26}[data-theme=dark] .form-input{background:#ffffff08;border-color:#ffffff14}[data-theme=dark] .form-input:hover{border-color:#ffffff24}[data-theme=dark] .modal{background:#151820f2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-color:#ffffff0f;border-top:1px solid rgba(255,107,107,.15)}[data-theme=dark] .cmd-box{background:#151820f2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-color:#ffffff14}[data-theme=dark] .toast{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}[data-theme=dark] .schedule-class{background:#ff6b6b14;border-left-color:#ff6b6b80}[data-theme=dark] .schedule-day-header.today{box-shadow:0 2px 8px #ff6b6b26}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:15px}body{font-family:var(--font-sans);color:var(--text);background:var(--bg);line-height:1.6;letter-spacing:-.011em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit;font-size:inherit}:focus-visible{outline:2px solid 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12px;border-radius:8px;color:var(--sidebar-text);font-size:.85rem;font-weight:500;transition:all var(--transition);text-decoration:none;border:none;background:none;width:100%;text-align:left;position:relative;overflow:hidden}.sidebar-link:hover{background:var(--sidebar-hover);color:#ddd;text-decoration:none;transform:translate(2px)}.sidebar-link.active{background:#ff6b6b1f;color:var(--primary)}.sidebar-link.active:before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:0 3px 3px 0;background:var(--primary-gradient);box-shadow:0 0 8px #ff6b6b66}.sidebar-link svg{width:20px;height:20px;flex-shrink:0}.sidebar-link-label{overflow:hidden;white-space:nowrap;transition:opacity var(--transition-slow),width var(--transition-slow)}.sidebar--collapsed .sidebar-link-label{opacity:0;width:0}.sidebar--collapsed .sidebar-link{justify-content:center;padding:10px}.sidebar--collapsed .sidebar-link.active:before{display:none}.sidebar-footer{padding:12px 10px 16px;border-top:1px solid var(--sidebar-border)}.sidebar-user{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:8px;transition:background var(--transition)}.sidebar-user:hover{background:var(--sidebar-hover)}.sidebar-user-avatar{width:34px;height:34px;border-radius:8px;background:var(--primary-gradient);display:flex;align-items:center;justify-content:center;font-weight:600;color:#fff;font-size:.78rem;flex-shrink:0;box-shadow:0 0 0 2px #ff6b6b33}.sidebar-user-info{flex:1;min-width:0;overflow:hidden;transition:opacity var(--transition-slow),width var(--transition-slow)}.sidebar--collapsed .sidebar-user-info{opacity:0;width:0}.sidebar-user-name{font-size:.82rem;color:#fff;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-user-role{font-size:.68rem;color:var(--sidebar-text);text-transform:capitalize}.sidebar-controls{display:flex;align-items:center;gap:4px;margin-top:8px}.sidebar-controls .sidebar--collapsed 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12px}.m-card-avatar{width:36px;height:36px;border-radius:18px;background:rgba(var(--primary-rgb, 255, 107, 107),.15);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700;flex-shrink:0}.fab{position:fixed;right:16px;bottom:20px;width:56px;height:56px;border-radius:28px;background:var(--primary);color:#fff;border:none;box-shadow:0 8px 20px #00000040;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:600;z-index:50;cursor:pointer}.fab:active{transform:scale(.95)}.detail-action-row{flex-direction:column;width:100%}.detail-action-row .btn{width:100%}.m-scroll-tabs{display:flex;overflow-x:auto;-webkit-overflow-scrolling:touch;gap:8px;padding-bottom:4px;margin-bottom:8px;flex-wrap:nowrap!important}.m-scroll-tabs::-webkit-scrollbar{display:none}.m-scroll-tabs>*{flex-shrink:0}.chart-bar-row{flex-direction:column;align-items:stretch;gap:4px;margin-bottom:14px}.chart-bar-label{min-width:0;text-align:left;font-size:.82rem}.chart-bar-track{width:100%}.bar-row{flex-direction:column;align-items:stretch;gap:4px;margin-bottom:12px}.bar-label{width:100%;text-align:left}.bar-value{min-width:0;text-align:right}.top-hours-list{display:flex;flex-direction:column;gap:8px}.top-hours-title{margin:0 0 4px;font-size:.85rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}.top-hours{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.top-hours-row{display:grid;grid-template-columns:24px 1fr 40px;grid-template-rows:auto auto;column-gap:10px;row-gap:4px;align-items:center;padding:10px 12px;background:var(--card-bg);border:1px solid var(--border);border-radius:10px}.top-hours-rank{grid-row:1 / span 2;font-size:1rem;font-weight:700;color:var(--primary);text-align:center}.top-hours-when{font-size:.88rem;color:var(--text-primary)}.top-hours-count{grid-row:1 / span 2;font-size:.95rem;font-weight:700;color:var(--text-primary);text-align:right;font-variant-numeric:tabular-nums}.top-hours-bar{grid-column:2 / span 1;grid-row:2 / span 1;height:6px;background:var(--border-light);border-radius:3px;overflow:hidden}.top-hours-bar-fill{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--primary-light));border-radius:3px}}@media (min-width: 769px){.mobile-only{display:none!important}.desktop-only{display:block}.fab{display:none}.announcement-card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:8px}.announcement-card-actions{display:flex;gap:8px}}.announcement-card{border-left:4px solid var(--border);padding:16px 20px;border-radius:8px;background:var(--card-bg);transition:background var(--transition)}.announcement-card.priority-urgent{border-left-color:var(--red)}.announcement-card.priority-high{border-left-color:#f97316}.announcement-card.priority-normal{border-left-color:var(--primary)}.announcement-card.priority-low{border-left-color:var(--text-muted)}.announcement-card .announcement-meta{display:flex;align-items:center;gap:8px;margin-bottom:6px;font-size:.78rem;color:var(--text-muted)}.announcement-card .announcement-title{font-size:1.05rem;font-weight:600;margin-bottom:4px}.announcement-card .announcement-content{font-size:.88rem;color:var(--text-secondary);line-height:1.5}.badge-draft{background:var(--bg-secondary);color:var(--text-muted)}.badge-published{background:#34d3991f;color:var(--green)}.badge-expired{background:#ef44441f;color:var(--red)}.promo-stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:24px}.promo-stat-card{background:var(--card-bg);border:1px solid var(--border);border-radius:10px;padding:16px 20px}.promo-stat-card .stat-value{font-size:1.5rem;font-weight:700}.promo-stat-card .stat-label{font-size:.82rem;color:var(--text-muted);margin-top:2px}.promo-code-badge{font-family:SF Mono,Fira Code,monospace;font-weight:600;letter-spacing:.5px;background:rgba(var(--primary-rgb, 255, 107, 107),.1);color:var(--primary);padding:4px 10px;border-radius:6px;font-size:.85rem}.promo-discount-preview{background:var(--bg-secondary);border-radius:8px;padding:12px 16px;margin-top:8px}.analytics-tabs{display:flex;gap:4px;background:var(--bg-secondary);border-radius:10px;padding:4px;margin-bottom:24px}.analytics-tab{flex:1;padding:10px 16px;border-radius:8px;border:none;cursor:pointer;font-size:.88rem;font-weight:500;background:transparent;color:var(--text-secondary);transition:all var(--transition)}.analytics-tab.active{background:var(--card-bg);color:var(--text-primary);box-shadow:0 1px 3px #0000001a}.chart-container{margin-bottom:24px}.chart-bar-row{display:flex;align-items:center;gap:12px;margin-bottom:10px}.chart-bar-label{min-width:120px;font-size:.84rem;color:var(--text-secondary);text-align:right}.chart-bar-track{flex:1;height:28px;background:var(--bg-secondary);border-radius:6px;overflow:hidden}.chart-bar-fill{height:100%;border-radius:6px;transition:width .6s ease;display:flex;align-items:center;padding-left:8px;font-size:.78rem;font-weight:600;color:#fff;min-width:32px}.heatmap-grid{display:grid;grid-template-columns:auto repeat(24,1fr);gap:2px;font-size:.72rem}.heatmap-cell{aspect-ratio:1;border-radius:3px;display:flex;align-items:center;justify-content:center;font-size:.65rem;color:var(--text-muted);transition:background var(--transition)}.heatmap-label{font-size:.72rem;color:var(--text-muted);display:flex;align-items:center}.heatmap-legend{display:flex;align-items:center;gap:6px;margin-top:8px;font-size:.75rem;color:var(--text-muted)}.heatmap-legend-cell{width:14px;height:14px;border-radius:3px}.cohort-table{width:100%;border-collapse:collapse;font-size:.84rem}.cohort-table th,.cohort-table td{padding:8px 12px;text-align:left;border-bottom:1px solid var(--border)}.cohort-table th{font-weight:600;color:var(--text-muted);font-size:.78rem;text-transform:uppercase}.notif-rule{display:flex;align-items:flex-start;gap:10px;padding:8px 0}.notif-rule input[type=checkbox]{margin-top:3px}.notif-rule-config{display:flex;gap:12px;margin-top:6px;margin-left:24px}.notif-rule-config .form-input{width:80px}