:root{--sidebar-accent-color: var(--primary-color);--shell-safe-bottom: min(env(safe-area-inset-bottom, 0px), 24px);--shell-bottom-nav-height: 85px}body{padding:0;display:flex;height:100vh;min-height:100vh;overflow:hidden}.app-shell-container{display:flex;width:100%;height:100vh}.bottom-nav{position:fixed;bottom:0;left:0;right:0;display:flex;align-items:center;height:calc(var(--shell-bottom-nav-height) + var(--shell-safe-bottom));padding:0 6px var(--shell-safe-bottom);background-color:var(--background-color-card, #fff);border-top:1px solid var(--border-color-light, #e2e8f0);z-index:1500;overflow-x:auto;overflow-y:hidden}.bottom-nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:0 0 calc((100vw - 12px)/5);max-width:80px;min-width:56px;text-decoration:none;color:var(--text-color-secondary, #64748b);font-size:10px;background:none;border:none;cursor:pointer}@media (min-width: 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#sidebar-subtitle{font-size:.8em;color:var(--text-color-secondary)}.sidebar-nav{flex-grow:1;overflow-y:auto;overflow-x:hidden;padding:10px}.sidebar-nav::-webkit-scrollbar{width:5px}.sidebar-nav::-webkit-scrollbar-track{background:transparent}.sidebar-nav::-webkit-scrollbar-thumb{background-color:var(--border-color-light);border-radius:10px}.sidebar-nav::-webkit-scrollbar-thumb:hover{background-color:#a0aec0}.sidebar-nav ul{list-style:none;padding:0;margin:0}.sidebar-nav a,.sidebar-group summary{display:flex;align-items:center;gap:15px;padding:12px 15px;border-radius:var(--border-radius-md);text-decoration:none;font-weight:500;transition:background-color .2s,color .2s;margin-bottom:5px;white-space:nowrap;overflow:hidden;position:relative;border-left:3px solid transparent;color:var(--text-color-secondary)}.sidebar-nav a:hover,.sidebar-group summary:hover{background-color:var(--background-color-hover);color:var(--text-color-primary)}.sidebar-nav a.active{background-color:var(--primary-color-light);color:var(--sidebar-accent-color);border-left-color:var(--sidebar-accent-color)}.sidebar-group summary.active-group{background-color:transparent;color:var(--sidebar-accent-color);border-left-color:var(--sidebar-accent-color)}.sidebar-nav a.active i,.sidebar-group summary.active-group i{color:var(--sidebar-accent-color)}.sidebar-nav a i,.sidebar-group summary i{width:20px;text-align:center;font-size:1.1em;flex-shrink:0;color:var(--text-color-secondary);transition:color .2s}.sidebar-nav a span,.sidebar-group summary span{transition:opacity .2s ease,visibility .2s ease}.sidebar-group{position:relative}.sidebar-group summary{list-style:none;cursor:pointer}.sidebar-group summary:after{content:"▼";font-size:.7em;margin-left:auto;transition:transform .2s,opacity .2s}.sidebar-group[open]>summary:after{transform:rotate(180deg)}.sidebar-group ul{padding-left:20px;margin-top:5px}.sidebar-group ul a{padding:10px 15px}.sidebar-group ul a i{font-size:.8em}.sidebar.collapsed{width:60px;padding:0}.sidebar.collapsed .sidebar-header{display:flex;align-items:center;justify-content:center;padding:0}.sidebar.collapsed .sidebar-header #sidebar-logo{margin:0}.sidebar.collapsed .sidebar-header .school-info{opacity:0;visibility:hidden;width:0;pointer-events:none}.sidebar.collapsed .sidebar-nav{padding:10px}.sidebar.collapsed .sidebar-nav a,.sidebar.collapsed .sidebar-group summary{justify-content:center;padding:12px}.sidebar.collapsed .sidebar-nav a i,.sidebar.collapsed .sidebar-group summary i{margin:0;font-size:1.2em}.sidebar.collapsed .sidebar-nav a span,.sidebar.collapsed .sidebar-group summary span{display:none}.sidebar.collapsed .sidebar-group summary:after{display:none}.sidebar.collapsed .sidebar-group ul{display:none}.flyout-menu{position:fixed;left:60px;top:0;background-color:var(--background-color-card);border:1px solid var(--border-color-light);box-shadow:var(--shadow-md);border-radius:var(--border-radius-md);padding:8px;min-width:200px;z-index:1005;animation:fadeIn .15s ease-out;list-style:none;margin:0}.flyout-menu li{list-style:none}.flyout-menu a{width:100%;box-sizing:border-box}.sidebar-tooltip{position:fixed;background-color:var(--text-color-primary);color:var(--text-color-light);padding:6px 12px;border-radius:var(--border-radius-md);font-size:.9em;font-weight:500;z-index:1010;pointer-events:none;white-space:nowrap;box-shadow:var(--shadow-md);display:none}.sidebar-tooltip:before{content:"";position:absolute;top:50%;right:100%;margin-top:-5px;border-width:5px;border-style:solid;border-color:transparent var(--text-color-primary) transparent transparent}#module-disabled-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a8c;display:flex;align-items:center;justify-content:center;z-index:10000;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}#module-disabled-overlay .module-disabled-card{background:var(--background-color-card);color:var(--text-color-primary);border:1px solid var(--border-color-light);border-radius:14px;padding:28px 30px;text-align:center;box-shadow:var(--shadow-lg);max-width:520px;width:calc(100% - 40px)}#module-disabled-overlay .module-disabled-icon{width:60px;height:60px;border-radius:50%;background:#ef44441f;color:var(--danger-color);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:28px}#module-disabled-overlay h2{margin:0 0 10px;font-size:1.4rem}#module-disabled-overlay p{margin:0 0 8px;color:var(--text-color-secondary)}#module-disabled-overlay .module-disabled-note{font-size:.9rem}.main-content-wrapper{flex-grow:1;display:flex;flex-direction:column;height:100vh;min-width:0}body.public-view{display:block;height:auto;min-height:100vh;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch}body.public-view .app-shell-container,body.public-view .main-content-wrapper{height:auto;min-height:100vh}body.public-view #app-content{overflow:visible;min-height:calc(100vh - 30px)}@supports (height: 100dvh){body{height:100dvh;min-height:100dvh}.app-shell-container,.main-content-wrapper{height:100dvh}body.public-view,body.public-view .app-shell-container,body.public-view .main-content-wrapper{min-height:100dvh}body.public-view #app-content{min-height:calc(100dvh - 30px)}}.top-bar{flex-shrink:0;display:flex;align-items:center;padding:0 20px;gap:15px;height:60px;background-color:var(--background-color-card);border-bottom:1px solid var(--border-color-light);position:relative}.billing-status-banner{display:flex;align-items:center;gap:16px;padding:10px 20px;background:#fff7ed;border-bottom:1px solid 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infinite;pointer-events:none;border-radius:999px}.top-bar-right{margin-left:auto;display:flex;align-items:center;gap:5px}.sidebar-toggle{background:none;border:none;font-size:1.5em;cursor:pointer;color:var(--text-color-primary)}.top-bar-title{font-size:1.2em;font-weight:600;color:var(--primary-color);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer;transition:color .2s;min-width:0}.top-bar-title:hover{color:var(--primary-color-dark)}.module-summary-tooltip{display:none;position:absolute;top:55px;left:60px;background-color:var(--background-color-card);border:1px solid var(--border-color-light);border-radius:var(--border-radius-md);box-shadow:var(--shadow-lg);padding:12px 15px;z-index:1020;max-width:350px;font-size:.9em;line-height:1.5;animation:fadeIn .2s ease-out}.top-bar-filter{display:none}.user-profile{display:flex;align-items:center;gap:10px;position:relative;cursor:pointer;padding:5px;border-radius:var(--border-radius-full);transition:background-color .2s}.user-profile:hover{background-color:var(--background-color-main)}.user-avatar{width:40px;height:40px;border-radius:var(--border-radius-full);object-fit:cover;border:2px solid var(--border-color-light)}.user-avatar.default-avatar{display:flex;align-items:center;justify-content:center;background-color:var(--background-color-main);color:var(--text-color-secondary)}.user-avatar.default-avatar i{font-size:1.2em}.welcome-text-desktop{font-size:.9em;color:var(--text-color-secondary);text-align:right}.welcome-text-desktop strong{display:block;color:var(--text-color-primary)}.user-menu-dropdown{display:none;position:absolute;top:calc(100% + 5px);right:0;background-color:var(--background-color-card);border-radius:var(--border-radius-md);box-shadow:var(--shadow-lg);min-width:240px;max-width:320px;max-height:calc(100vh - 80px);overflow-y:auto;z-index:1010;animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.user-menu-dropdown.show{display:block}.user-menu-dropdown #logout-btn{position:sticky;bottom:0;background-color:var(--background-color-card);border-top:1px solid var(--border-color-light);z-index:1;margin-top:auto}@media (max-width: 768px){.user-menu-dropdown{position:fixed;top:72px;bottom:auto;right:16px;left:auto;width:min(92vw,320px);max-height:calc(100vh - 88px);overflow-y:auto;transform:none}}.dropdown-header{padding:15px;border-bottom:1px solid var(--border-color-light);text-align:center}.dropdown-header strong{display:block;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dropdown-header span{font-size:.85em;color:var(--text-color-secondary);text-transform:capitalize}.user-menu-dropdown a,.user-menu-dropdown button{background:none;border:none;width:100%;text-align:left;padding:12px 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.fa-moon{opacity:0}input:checked+.toggle-slider{background-color:var(--primary-color)}input:checked+.toggle-slider:before{transform:translate(24px)}input:checked+.toggle-slider .fa-sun{opacity:0}input:checked+.toggle-slider .fa-moon{opacity:1}@media (max-width: 768px){.user-menu-dropdown{position:fixed;top:auto;bottom:70px;right:10px;left:auto;max-height:calc(100vh - 140px);overflow-y:auto;max-width:280px;min-width:240px}.user-menu-dropdown #logout-btn{position:sticky;bottom:0;background-color:var(--background-color-card);border-top:1px solid var(--border-color-light);z-index:1;margin-bottom:0!important}}@media (min-width: 769px){#top-bar-search-btn{display:none!important}}.pwa-install-popup{position:fixed;left:12px;right:12px;bottom:calc(var(--shell-bottom-nav-height, 60px) + var(--shell-safe-bottom, env(safe-area-inset-bottom, 0px)) + 10px);z-index:1560;display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:16px;border:1px solid rgba(59,130,246,.22);background:linear-gradient(135deg,#eff6fffa,#fffffffa);box-shadow:0 12px 28px #0f172a33;animation:installPopupEnter .24s ease-out}.pwa-install-popup.closing{animation:installPopupExit .18s ease-in forwards}.pwa-install-popup__icon{width:34px;height:34px;border-radius:10px;background:#2563eb24;color:#1d4ed8;display:flex;align-items:center;justify-content:center;flex-shrink:0}.pwa-install-popup__content{flex:1;min-width:0}.pwa-install-popup__title{margin:0 0 4px;font-size:.98rem;line-height:1.25;color:#0f172a}.pwa-install-popup__desc{margin:0;font-size:.84rem;line-height:1.4;color:#334155}.pwa-install-popup__actions{margin-top:10px;display:flex;gap:8px}.pwa-install-popup__btn{border:none;border-radius:10px;padding:8px 12px;font-size:.82rem;font-weight:600;cursor:pointer}.pwa-install-popup__btn--primary{background:#2563eb;color:#fff}.pwa-install-popup__btn--ghost{background:#0f172a14;color:#0f172a}.fullscreen-fallback-chip{position:fixed;right:12px;bottom:calc(var(--shell-bottom-nav-height, 60px) + var(--shell-safe-bottom, env(safe-area-inset-bottom, 0px)) + 90px);z-index:1550;border:none;border-radius:999px;padding:9px 13px;display:inline-flex;align-items:center;gap:6px;background:#0f172aeb;color:#fff;box-shadow:0 8px 20px #0f172a59;font-size:.8rem;font-weight:600;animation:installPopupEnter .2s ease-out}.fullscreen-fallback-chip:disabled{opacity:.7}@keyframes installPopupEnter{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes installPopupExit{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(8px)}}@media (min-width: 769px){.pwa-install-popup,.fullscreen-fallback-chip{display:none!important}}