:root{--bg:#F5F7FA;--surface:#fff;--text:#17243A;--muted:#526176;--primary:#1649B8;--border:#D7DEE8;--focus:#0B57D0;--danger:#A61B1B;--warning:#744500;font:14px/1.5 system-ui,sans-serif;color:var(--text);background:var(--bg)}*{box-sizing:border-box}body{margin:0}a{color:var(--primary)}button,input,select,textarea{font:inherit}button,.button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:8px 14px;border:1px solid var(--border);border-radius:6px;background:var(--surface);color:var(--text);cursor:pointer;text-decoration:none;gap:8px}.primary,button[type=submit]{background:var(--primary);border-color:var(--primary);color:#fff}.danger{color:var(--danger)}button:disabled{opacity:.6;cursor:wait}:focus-visible{outline:3px solid var(--focus);outline-offset:3px}input,select,textarea{max-width:100%;width:100%;padding:9px 10px;min-height:42px;border:1px solid #9CAABE;border-radius:6px;background:#fff;color:var(--text)}input[type=checkbox],input[type=radio]{width:20px;min-height:20px;vertical-align:middle}label{display:block;font-weight:600;margin-bottom:4px}.field{margin-bottom:16px}.muted,small{color:var(--muted)}h1{font-size:24px;font-weight:600;margin:0 0 16px}h2{font-size:18px;margin:0 0 12px}h3{font-size:15px}p{margin:0 0 12px}.sidebar{position:fixed;inset:0 auto 0 0;width:224px;background:var(--surface);border-right:1px solid var(--border);z-index:30;overflow-y:auto}.brand{height:56px;display:flex;align-items:center;padding:16px;font-weight:700;border-bottom:1px solid var(--border)}.nav-group{padding:16px 16px 4px;color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.08em}.sidebar nav a{display:block;padding:9px 16px;margin:2px 8px;color:var(--text);border-radius:6px;text-decoration:none}.sidebar nav a[aria-current=page]{background:#EAF0FF;color:var(--primary);font-weight:600}.topbar{height:56px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 24px;background:#fff;border-bottom:1px solid var(--border);margin-left:224px}.topbar form{margin:0}.main{margin-left:224px;padding:24px;min-width:0}.topbar .identity{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.page-header,.toolbar,.actions{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}.page-header h1{margin:0}.panel,.card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:20px;margin-bottom:16px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.alert{padding:12px 16px;border:1px solid var(--border);border-left:4px solid var(--primary);border-radius:6px;margin-bottom:16px;background:#fff}.alert.error,.error-message{color:var(--danger);border-color:var(--danger)}.alert.warning{color:var(--warning);border-color:#b77c22}.badge{display:inline-flex;padding:2px 8px;border:1px solid var(--border);border-radius:5px;font-size:12px;background:#F5F7FA}.table-wrap{width:100%;overflow:auto}table{border-collapse:collapse;width:100%;background:#fff}th{height:40px;background:#F5F7FA;text-align:left;color:var(--muted);font-size:12px}td{height:44px}td,th{padding:8px 12px;border-bottom:1px solid var(--border)}.number{text-align:right}.empty{padding:32px;text-align:center;color:var(--muted)}.auth{max-width:430px;margin:8vh auto;padding:24px}.auth h1{margin-top:16px}.auth-brand{font-weight:700;color:var(--primary)}.portal .main,.portal .topbar{margin-left:0}.portal .main{max-width:900px;margin:0 auto;padding-bottom:90px}.bottom-nav{position:fixed;bottom:0;left:0;right:0;display:flex;background:#fff;border-top:1px solid var(--border);z-index:25;justify-content:center}.bottom-nav a{flex:1;max-width:180px;text-align:center;padding:14px 4px;text-decoration:none;color:var(--text);min-height:52px}.bottom-nav a[aria-current=page]{color:var(--primary);font-weight:700;border-top:3px solid var(--primary)}.mobile-toggle{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.demo-label{font-size:11px;color:var(--warning);padding:4px 12px;background:#FFF5DF;text-align:center}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:16px;overflow:auto}.tabs a{padding:10px 12px;white-space:nowrap;text-decoration:none}.tabs [aria-current=page]{border-bottom:3px solid var(--primary)}dialog{border:1px solid var(--border);border-radius:8px;max-width:min(95vw,600px);padding:24px}dialog::backdrop{background:#17243A66}.drawer{position:fixed;inset:0 0 0 auto;width:440px;max-width:100%;height:100dvh;max-height:100dvh;margin:0;border-radius:0;display:flex;flex-direction:column}.drawer:not([open]){display:none}.drawer-header,.drawer-footer{flex:none;padding:16px;border-bottom:1px solid var(--border)}.drawer-body{flex:1;overflow:auto;padding:16px}.drawer-footer{border-top:1px solid var(--border);border-bottom:0}.slots{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:8px}.slots button[aria-pressed=true]{background:var(--primary);color:#fff}.step-label{font-size:12px;color:var(--muted);margin-bottom:8px}.lesson-row{display:grid;grid-template-columns:90px 1fr auto;gap:16px;padding:16px 0;border-bottom:1px solid var(--border)}.lesson-row:last-child{border:0}.lesson-time{font-weight:700}.hidden,[hidden]{display:none!important}@media(min-width:768px) and (max-width:1199px){.sidebar{width:64px}.sidebar .brand{font-size:0}.sidebar .brand::after{content:'RS';font-size:16px}.sidebar .nav-group{display:none}.sidebar nav a{overflow:hidden;padding:10px 4px;font-size:10px;text-overflow:ellipsis}.topbar,.main{margin-left:64px}}@media(max-width:767px){body{overflow-x:hidden}.sidebar{transform:translateX(-100%);width:260px}.sidebar.open{transform:none}.topbar,.main{margin-left:0;padding-left:16px;padding-right:16px}.main{padding-top:16px}.topbar{gap:8px}.mobile-toggle{display:inline-flex}.grid-2{grid-template-columns:1fr}.panel,.card{padding:16px}input,select,textarea{font-size:16px}button,.button{min-height:44px}.lesson-row{grid-template-columns:64px 1fr;gap:8px}.lesson-row>.actions{grid-column:2}.page-header{align-items:flex-start}.auth{margin:24px 12px}.topbar .identity{font-size:12px}.desktop-only{display:none}.table-wrap{font-size:12px}td,th{padding:8px}.toolbar>*{max-width:100%}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.offering-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:16px;align-items:start}.category-choice{border-bottom:1px solid var(--border);padding:10px 0}.category-choice summary{cursor:pointer}.category-choice form{padding-top:12px}.category-choice label{font-size:12px;margin-bottom:10px}.offering-form{padding-top:16px}.offering-toggles{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:16px}.duration-choices{border:1px solid var(--border);border-radius:6px;margin:0 0 16px;display:flex;gap:16px;flex-wrap:wrap}.duration-choices label{font-weight:400}.offering-layout .actions label{font-size:12px;max-width:70%}@media(max-width:767px){.offering-layout{grid-template-columns:1fr}}

/* Desktop menu preference also frees the complete calendar width. */
.nav-toggle{display:inline-flex;flex:none;width:40px;padding:8px;font-size:18px}.sidebar-collapsed .topbar,.sidebar-collapsed .main{margin-left:0}.nav-backdrop{position:fixed;inset:0;z-index:29;width:100%;height:100dvh;margin:0;padding:0;border:0;border-radius:0;background:#17243A66;cursor:default}@media(min-width:768px){.nav-backdrop{display:none}}

/* Navigation control belongs to the menu edge, with an explicit action label. */
.navigation-rail{display:none}.nav-toggle{width:auto;font-size:12px;white-space:nowrap}.nav-toggle-icon{flex:none}.nav-toggle[aria-expanded=false] .nav-toggle-icon{transform:scaleX(-1)}
@media(min-width:768px){
.sidebar{width:224px}.sidebar .brand{font-size:14px}.sidebar .brand::after{content:none}.sidebar .nav-group{display:block}.sidebar nav{padding-top:52px}.sidebar nav a{font-size:14px;padding:9px 16px;overflow:visible}.topbar,.main{margin-left:224px}
.nav-toggle{position:fixed;top:64px;left:8px;z-index:31;width:208px;justify-content:flex-start;min-height:36px;padding:8px 12px;background:var(--surface);border:1px solid transparent;color:var(--muted);gap:9px}.nav-toggle:hover{background:#eaf0ff;color:var(--primary);border-color:var(--border)}
.sidebar-collapsed .navigation-rail{display:block;position:fixed;inset:0 auto 0 0;width:64px;background:var(--surface);border-right:1px solid var(--border);z-index:30}.sidebar-collapsed .topbar,.sidebar-collapsed .main{margin-left:64px}.sidebar-collapsed .nav-toggle{top:8px;left:4px;width:56px;min-height:72px;padding:8px 3px;flex-direction:column;justify-content:center;gap:5px;font-size:11px;white-space:normal;line-height:1.2;text-align:center}.sidebar-collapsed .nav-toggle span{max-width:48px}
body:not(.sidebar-collapsed) .calendar-secondary-bar{margin-left:224px}body.sidebar-collapsed .calendar-secondary-bar{margin-left:64px}
}
@media(max-width:767px){.nav-toggle{padding:5px;gap:4px}.nav-toggle [data-nav-label]{font-size:11px;max-width:42px;white-space:normal;line-height:1.1}}
@media(min-width:768px){.sidebar{display:flex;flex-direction:column;overflow:hidden}.sidebar .brand{flex-shrink:0}.sidebar nav{margin-top:52px;padding-top:0;overflow-y:auto;min-height:0;flex:1}}