:root{--haiti: #1A0A2B;--haiti-mid: #2d1448;--violet: #7308E3;--violet-light: #9b3ff5;--violet-dim: rgba(115,8,227,.09);--linen: #F5F1FF;--linen-dark: #EAE3FF;--white: #ffffff;--text: #1A0A2B;--muted: #6B5F8A;--border: #DDD5F5;--danger: #e03b5a;--danger-light: #fde8ed;--success: #1db070;--success-light: #e0f7ed;--shadow-sm: 0 1px 3px rgba(26,10,43,.07);--shadow: 0 4px 16px rgba(26,10,43,.09);--radius: 12px;--radius-sm: 8px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,sans-serif;background:#f8f5ff;color:var(--text);min-height:100vh}h1,h2,h3,h4{font-family:Syne,sans-serif}.app{display:flex;min-height:100vh}.sidebar{width:236px;background:var(--haiti);flex-shrink:0;position:fixed;height:100vh;left:0;top:0;display:flex;flex-direction:column}.sidebar-brand{padding:26px 22px 22px;border-bottom:1px solid rgba(255,255,255,.07)}.brand-wordmark{display:flex;flex-direction:column;gap:1px}.brand-tactus{font-family:Syne,sans-serif;font-size:22px;font-weight:800;color:#f4f0ff;letter-spacing:-.5px;line-height:1}.brand-tactus span{color:var(--violet-light)}.brand-admin{font-family:Syne,sans-serif;font-size:11px;font-weight:500;color:#f4f0ff59;letter-spacing:2.5px;text-transform:uppercase;margin-top:3px}.sidebar-nav{padding:10px 0;flex:1}.nav-item{display:flex;align-items:center;gap:12px;padding:11px 22px;cursor:pointer;color:#f4f0ff73;font-size:13.5px;font-weight:500;transition:all .15s;position:relative;font-family:Inter,sans-serif;border-left:2.5px solid transparent}.nav-item:hover{color:#dcd2ffe6;background:#ffffff0a}.nav-item.active{color:#f4f0ff;background:#7308e329;border-left-color:var(--violet-light)}.nav-icon{width:20px;height:20px;flex-shrink:0;opacity:.7}.nav-item.active .nav-icon{opacity:1}.sidebar-footer{padding:16px 22px;border-top:1px solid rgba(255,255,255,.07)}.sidebar-footer p{color:#f4f0ff33;font-size:10.5px;letter-spacing:.3px}.main{margin-left:236px;padding:36px 40px;flex:1}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}.page-header h2{font-size:24px;font-weight:700;letter-spacing:-.4px}.card{background:var(--white);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-sm)}.card-pad{padding:24px}.card-header{padding:18px 22px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}.card-header h3{font-size:15px;font-weight:600}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 17px;border-radius:var(--radius-sm);border:none;cursor:pointer;font-family:Inter,sans-serif;font-size:13px;font-weight:500;transition:all .15s;white-space:nowrap}.btn-primary{background:var(--violet);color:#fff}.btn-primary:hover{background:var(--violet-light);box-shadow:0 4px 14px #7308e34d}.btn-secondary{background:#f8f5ff;color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--linen-dark)}.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text)}.btn-ghost:hover{background:#f8f5ff}.btn-danger{background:transparent;border:1px solid #f0b8c4;color:var(--danger)}.btn-danger:hover{background:var(--danger-light)}.btn-sm{padding:5px 11px;font-size:12px;border-radius:6px}.btn:disabled{opacity:.4;cursor:not-allowed}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.form-stack{display:flex;flex-direction:column;gap:12px;width:100%}.form-stack .form-group{width:100%}.dob-input{width:160px!important;max-width:160px!important}.form-group{display:flex;flex-direction:column;gap:5px}.form-group.full{grid-column:span 2}label{font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.7px}input,select,textarea{padding:9px 12px;border-radius:var(--radius-sm);border:1.5px solid var(--border);font-family:Inter,sans-serif;font-size:13.5px;background:#f8f5ff;color:var(--text);transition:border-color .15s,background .15s;width:100%}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--violet);background:#fff;box-shadow:0 0 0 3px #7308e314}textarea{resize:vertical}.form-actions{display:flex;gap:10px;margin-top:20px;padding-top:18px;border-top:1px solid var(--border)}.checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:13.5px;font-weight:400;color:var(--text);text-transform:none;letter-spacing:0}.checkbox-label input{width:auto;cursor:pointer;accent-color:var(--violet)}table{width:100%;border-collapse:collapse}th{padding:10px 16px;text-align:left;font-size:10.5px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.7px;background:#f8f5ff;border-bottom:1px solid var(--border)}td{padding:13px 16px;border-bottom:1px solid var(--border);font-size:13.5px;vertical-align:middle}tr:last-child td{border-bottom:none}tbody tr:hover td{background:#f8f5ff}.empty-state{text-align:center;padding:52px 20px;color:var(--muted);font-size:13.5px}.actions-cell{display:flex;gap:6px}.badge{display:inline-flex;align-items:center;padding:3px 9px;border-radius:20px;font-size:11px;font-weight:600}.badge-scheduled{background:var(--violet-dim);color:var(--violet)}.badge-completed{background:var(--success-light);color:var(--success)}.badge-cancelled{background:#f0f0f0;color:#999}.badge-draft{background:var(--linen-dark);color:var(--muted)}.badge-sent{background:var(--violet-dim);color:var(--violet)}.badge-paid{background:var(--success-light);color:var(--success)}.modal-bg{position:fixed;top:0;right:0;bottom:0;left:0;background:#1a0a2b80;z-index:200;display:flex;align-items:center;justify-content:center;padding:20px;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.modal{background:var(--white);border-radius:16px;padding:28px;width:100%;max-width:520px;box-shadow:0 20px 60px #1a0a2b33;max-height:90vh;overflow-y:auto}.modal-title{font-size:20px;font-weight:700;letter-spacing:-.3px;margin-bottom:20px}.detail-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--border);font-size:13.5px}.detail-row:last-of-type{border-bottom:none}.detail-label{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.5px;font-weight:600}.detail-value{font-weight:500}.amount-pill{background:var(--violet-dim);color:var(--violet);padding:3px 12px;border-radius:20px;font-size:14px;font-weight:700}.cal-toolbar{display:flex;align-items:center;gap:4px;padding:8px 10px;border-bottom:1px solid var(--border);flex-wrap:nowrap;overflow:hidden}.cal-view-tabs{display:flex;background:#f8f5ff;border-radius:7px;padding:2px;border:1px solid var(--border);flex-shrink:0}.cal-tab{padding:4px 8px;border-radius:5px;font-size:12px;font-weight:500;cursor:pointer;color:var(--muted);transition:all 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var(--border);background:var(--white);overflow:hidden;display:flex;flex-direction:column}.cal-cell:hover,.cal-cell.other-month{background:#f8f5ff}.cal-cell.other-month .cal-dnum{color:#ccc}.cal-dnum{font-size:12px;font-weight:600;margin-bottom:3px;width:22px;height:22px;display:flex;align-items:center;justify-content:center;border-radius:50%}.cal-cell.today .cal-dnum{background:var(--violet);color:#fff}.cal-event{border-radius:4px;padding:2px 6px;font-size:10.5px;font-weight:500;margin-bottom:2px;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.cal-event.scheduled{background:var(--violet-dim);color:var(--violet);border-left:2px solid var(--violet)}.cal-event.completed{background:var(--success-light);color:var(--success);border-left:2px solid var(--success)}.cal-event.absent,.cal-event.no-show{background:var(--danger-light);color:var(--danger);border-left:2px solid var(--danger)}.cal-event.cancelled-billable{background:repeating-linear-gradient(45deg,#e0f7ed,#e0f7ed 3px,#fff 3px,#fff 7px);color:#1db070;border-left:3px solid #1db070}.cal-event.cancelled-notbillable{background:repeating-linear-gradient(45deg,#fde8ed,#fde8ed 3px,#fff 3px,#fff 7px);color:var(--danger);border-left:3px solid var(--danger)}.cal-week-wrap{overflow:auto;max-height:560px}.cal-week-grid{display:grid;grid-template-columns:52px repeat(7,1fr);min-width:600px}.cal-week-header{padding:8px 4px;text-align:center;font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.4px;border-bottom:1px solid var(--border);background:#f8f5ff}.cal-week-header.is-today{color:var(--violet)}.cal-hour-label{font-size:10px;color:var(--muted);text-align:right;padding-right:8px;height:48px;display:flex;align-items:flex-start;padding-top:4px;border-right:1px solid var(--border);background:var(--white)}.cal-week-cell{height:48px;border-right:1px solid var(--border);border-bottom:1px solid #EDE8FF;position:relative;cursor:pointer;overflow:visible}.cal-week-cell:hover{background:#f8f5ff}.cal-week-cell.is-today{background:#7308e306}.cal-week-event{position:absolute;left:2px;right:2px;border-radius:4px;padding:2px 5px;font-size:10px;font-weight:500;overflow:hidden;cursor:pointer;z-index:2}.cal-week-event.scheduled{background:var(--violet-dim);color:var(--violet);border-left:2px solid var(--violet)}.cal-week-event.cancelled-billable{background:repeating-linear-gradient(45deg,#e0f7ed,#e0f7ed 3px,#fff 3px,#fff 7px);color:#1db070;border-left:3px solid #1db070}.cal-week-event.cancelled-notbillable{background:repeating-linear-gradient(45deg,#fde8ed,#fde8ed 3px,#fff 3px,#fff 7px);color:var(--danger);border-left:3px solid var(--danger)}.cal-week-event.completed{background:var(--success-light);color:var(--success);border-left:2px solid var(--success)}.cal-week-event.absent,.cal-week-event.no-show{background:var(--danger-light);color:var(--danger);border-left:2px solid var(--danger)}.cal-day-wrap{overflow:auto;max-height:560px}.cal-day-grid{display:grid;grid-template-columns:52px 1fr}.cal-day-col-header{padding:10px 12px;text-align:center;font-size:13px;font-weight:700;border-bottom:1px solid var(--border);color:var(--violet);background:#f8f5ff}.cal-day-cell{height:54px;border-bottom:1px solid #EDE8FF;position:relative;cursor:pointer;overflow:visible}.cal-day-cell:hover{background:#f8f5ff}.cal-day-event{position:absolute;left:4px;right:4px;border-radius:5px;padding:3px 8px;font-size:11.5px;font-weight:500;cursor:pointer;overflow:hidden;z-index:2}.cal-day-event.scheduled{background:var(--violet-dim);color:var(--violet);border-left:3px solid var(--violet)}.cal-day-event.cancelled-billable{background:repeating-linear-gradient(45deg,#e0f7ed,#e0f7ed 4px,#fff 4px,#fff 9px);color:#1db070;border-left:3px solid #1db070}.cal-day-event.cancelled-notbillable{background:repeating-linear-gradient(45deg,#fde8ed,#fde8ed 4px,#fff 4px,#fff 9px);color:var(--danger);border-left:3px solid var(--danger)}.cal-day-event.completed{background:var(--success-light);color:var(--success);border-left:3px solid var(--success)}.cal-day-event.absent,.cal-day-event.no-show{background:var(--danger-light);color:var(--danger);border-left:3px solid var(--danger)}.lesson-check-row{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--border)}.lesson-check-row:last-child{border-bottom:none}.lesson-check-row input{width:auto;accent-color:var(--violet);cursor:pointer}.total-row{display:flex;justify-content:space-between;align-items:center;padding:14px 0 0;font-size:15px;font-weight:700}.section-hint{color:var(--muted);font-size:13px;margin-bottom:18px;margin-top:-16px}.mobile-header{display:none;background:var(--haiti);padding:10px 16px;align-items:center;justify-content:space-between;flex-shrink:0}.mobile-user-pill{display:flex;align-items:center;gap:6px;cursor:pointer;padding:4px 8px;border-radius:20px;background:#ffffff14}.mobile-user-avatar{width:22px;height:22px;border-radius:50%;background:var(--violet);display:flex;align-items:center;justify-content:center;font-size:9px;font-weight:700;color:#fff}.mobile-user-name{font-size:11px;color:#d2c8ffcc;font-weight:500}.mobile-user-dropdown{position:absolute;top:36px;right:0;background:#fff;border:.5px solid var(--border);border-radius:10px;width:160px;box-shadow:0 8px 24px #1a0a2b26;overflow:hidden;z-index:200}.mobile-dd-item{padding:11px 14px;font-size:13px;color:var(--text);border-bottom:.5px solid var(--border);cursor:pointer}.mobile-dd-item:last-child{border-bottom:none}.mobile-dd-logout{color:var(--danger)}@media (max-width: 768px){.sidebar{display:none}.mobile-header{display:flex}.mobile-fab{display:flex!important}.page-header .btn-primary{display:none}.main{margin-left:0;padding:16px 16px 70px;max-width:100vw}.page-header h2{font-size:20px}.mobile-nav{display:flex!important}.form-grid{grid-template-columns:1fr}.form-group.full{grid-column:span 1}input:not([type=checkbox]):not([type=radio]):not([type=submit]):not([type=button]),select{font-size:16px!important;height:48px;min-height:unset;padding:0 14px;box-sizing:border-box;width:100%!important}textarea{font-size:16px!important;height:auto!important;min-height:80px!important;padding:10px 14px;box-sizing:border-box;width:100%!important;resize:vertical}.form-group{gap:8px}.form-grid{gap:10px}.form-group.full{width:100%}.cal-toolbar{padding:6px 8px}.cal-cell{min-height:72px;height:72px;padding:3px;display:flex;flex-direction:column}.cal-dnum{font-size:10px;width:18px;height:18px}.cal-event{font-size:9px;padding:1px 4px}.cal-week-wrap{overflow-x:hidden}.cal-week-grid{min-width:unset;grid-template-columns:28px repeat(7,1fr)}.cal-week-header{font-size:8px;padding:5px 1px}.cal-hour-label{font-size:8px;padding-right:3px;height:36px}.cal-week-cell{height:36px}.cal-week-event{font-size:8px;padding:1px 2px}.cal-day-wrap{overflow-x:hidden}.cal-day-grid{grid-template-columns:28px 1fr}.cal-day-cell{height:36px}.cal-hour-label[style]{height:36px!important}.cal-title-str{font-size:13px}.cal-week-wrap,.cal-day-wrap{overflow-x:auto}.modal{padding:20px}table{font-size:12px}td,th{padding:8px 10px}.actions-cell{flex-wrap:wrap}.inv-hide-mobile{display:none}.actions-cell{flex-direction:column;gap:4px}.actions-cell .btn{font-size:11px;padding:4px 8px}.card-pad{padding:16px}.student-cards{display:flex;flex-direction:column;gap:8px}.student-card-mobile{background:#fff;border-radius:10px;border:.5px solid var(--border);padding:13px;display:flex;align-items:center;gap:12px;cursor:pointer}.stu-avatar{width:38px;height:38px;border-radius:50%;background:var(--violet-dim);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:var(--violet);flex-shrink:0}.stu-info{flex:1;min-width:0}.stu-card-name{font-size:13px;font-weight:600;color:var(--text);margin-bottom:2px}.stu-card-meta{font-size:11px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.stu-chevron{font-size:16px;color:var(--border);flex-shrink:0}.student-table{display:none}.mobile-invoice-view{display:block}.desktop-invoice-view{display:none}}@media (min-width: 769px){.mobile-nav,.student-cards{display:none!important}.student-table{display:block!important}.mobile-invoice-view{display:none!important}.desktop-invoice-view{display:block!important}}.mobile-nav{display:none;position:fixed;bottom:0;left:0;right:0;background:var(--haiti);padding:6px 8px 14px;z-index:100;justify-content:flex-start;align-items:center;border-top:1px solid rgba(255,255,255,.07);gap:0}.mobile-fab{display:none;position:fixed;bottom:72px;right:20px;width:52px;height:52px;background:var(--violet);color:#fff;border:none;border-radius:50%;font-size:26px;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 16px #7308e373;z-index:101;line-height:1}.mobile-nav-btn{display:flex;align-items:center;justify-content:center;color:#d2c8ff66;font-size:0;font-family:Inter,sans-serif;border:none;background:transparent;padding:8px 14px;border-radius:7px;cursor:pointer;transition:all .15s;flex-shrink:0;flex:1}.mobile-nav-btn.active{color:#f5f1ff;background:#7308e333}.mobile-nav-btn svg{width:22px;height:22px;flex-shrink:0}.toast{position:fixed;bottom:24px;right:24px;background:var(--haiti);color:var(--linen);padding:11px 18px;border-radius:10px;font-size:13px;z-index:999;box-shadow:0 8px 32px #1a0a2b40;display:flex;align-items:center;gap:8px;animation:toastIn .2s ease}@keyframes toastIn{0%{transform:translateY(8px);opacity:0}to{transform:translateY(0);opacity:1}}