:root{--blue: #185FA5;--blue-light: #E8F0FB;--blue-mid: #4D8DD4;--blue-dark: #0F3D6E;--teal: #1a8a7f;--teal-light: #E0F5F3;--green: #1e8a45;--green-light: #E3F5EB;--amber: #c47e00;--amber-light: #FFF3D6;--coral: #d9534f;--coral-light: #FDECEA;--red: #c0392b;--red-light: #FDECEA;--gray: #6b7280;--gray-light: #F3F4F6;--gray-border: #E5E7EB;--text: #1a1a2e;--text-secondary: #6b7280;--bg: #ffffff;--bg-secondary: #F9FAFB;--radius: 10px;--radius-sm: 6px;--shadow: 0 1px 4px rgba(0,0,0,.08), 0 2px 12px rgba(0,0,0,.06);--shadow-md: 0 4px 16px rgba(0,0,0,.12);--header-h: 56px;--nav-w: 220px;--content-max: 760px}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-secondary);color:var(--text)}h1,h2,h3,h4,p{margin:0}button{font-family:inherit}a{color:inherit}.app-shell{min-height:100vh;display:flex;flex-direction:column}.app-header{position:sticky;top:0;z-index:200;height:var(--header-h);background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 16px;box-shadow:0 2px 8px #0003;flex-shrink:0}.app-header-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff}.app-header-brand-logo{width:36px;height:36px;border-radius:8px;background:#fff;padding:2px;flex-shrink:0}.app-header-brand-name{font-weight:700;font-size:16px;line-height:1.2}.app-header-brand-sub{font-size:10px;opacity:.75}.app-header-actions{display:flex;align-items:center;gap:8px}.app-hamburger{display:none;background:#ffffff26;border:none;color:#fff;width:38px;height:38px;border-radius:8px;cursor:pointer;font-size:20px;align-items:center;justify-content:center}.app-logout-btn{background:#ffffff26;border:none;color:#fff;padding:6px 12px;border-radius:6px;cursor:pointer;font-size:12px;font-family:inherit;white-space:nowrap}.app-body{display:flex;flex:1}.app-sidebar{width:var(--nav-w);background:#fff;border-right:1px solid var(--gray-border);display:flex;flex-direction:column;flex-shrink:0;position:sticky;top:var(--header-h);height:calc(100vh - var(--header-h));overflow-y:auto}.app-sidebar-nav{padding:12px 8px;flex:1}.app-sidebar-link{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:8px;text-decoration:none;color:var(--text-secondary);font-size:14px;font-weight:500;transition:background .15s,color .15s;margin-bottom:2px}.app-sidebar-link:hover{background:var(--blue-light);color:var(--blue)}.app-sidebar-link.active{background:var(--blue-light);color:var(--blue);font-weight:600}.app-sidebar-icon{font-size:18px;width:24px;text-align:center;flex-shrink:0}.app-nav-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;z-index:299}.app-nav-overlay.open{display:block}.app-drawer{position:fixed;top:0;left:0;bottom:0;width:80vw;max-width:300px;background:#fff;z-index:300;display:flex;flex-direction:column;transform:translate(-100%);transition:transform .25s ease;box-shadow:4px 0 24px #0000002e}.app-drawer.open{transform:translate(0)}.app-drawer-header{background:var(--blue);color:#fff;padding:16px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0}.app-drawer-close{background:#fff3;border:none;color:#fff;width:32px;height:32px;border-radius:6px;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center}.app-drawer-nav{padding:12px 8px;overflow-y:auto;flex:1}.app-drawer-link{display:flex;align-items:center;gap:14px;padding:13px 14px;border-radius:8px;text-decoration:none;color:var(--text);font-size:15px;font-weight:500;border-bottom:1px solid var(--gray-border);transition:background .15s}.app-drawer-link:last-child{border-bottom:none}.app-drawer-link.active{color:var(--blue);font-weight:600;background:var(--blue-light)}.app-drawer-footer{padding:16px;border-top:1px solid var(--gray-border)}.app-drawer-logout{display:block;width:100%;background:var(--red-light);color:var(--red);border:none;padding:12px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit}.app-main{flex:1;min-width:0;padding:16px 16px 32px}.app-main-inner{max-width:var(--content-max);margin:0 auto}.page-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:20px}.page-header-text h1{font-size:22px;font-weight:600;color:var(--text);margin-bottom:2px}.page-header-text p{font-size:13px;color:var(--text-secondary)}.page-header-actions{display:flex;gap:8px;flex-wrap:wrap;flex-shrink:0}.flex-wrap-gap{display:flex;flex-wrap:wrap;gap:8px}.grid-2col{display:grid;grid-template-columns:1fr 1fr;gap:10px}.grid-3col{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}.grid-info{display:grid;grid-template-columns:1fr 1fr;gap:8px;font-size:13px}.week-nav{display:flex;justify-content:space-between;align-items:center;background:#fff;border-radius:10px;padding:10px 16px;margin-bottom:16px;box-shadow:var(--shadow);border:1px solid var(--gray-border);gap:8px}.week-nav-label{font-weight:700;font-size:15px;color:var(--blue);text-align:center;flex:1}.admin-tabs{display:flex;gap:4px;margin-bottom:16px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding-bottom:2px;border-bottom:2px solid var(--gray-border)}.admin-tabs::-webkit-scrollbar{display:none}.admin-tab{padding:8px 16px;border:none;background:transparent;color:var(--text-secondary);font-size:13px;font-weight:500;cursor:pointer;font-family:inherit;white-space:nowrap;border-bottom:2px solid transparent;margin-bottom:-2px;border-radius:6px 6px 0 0;transition:color .15s,border-color .15s}.admin-tab:hover{color:var(--blue);background:var(--blue-light)}.admin-tab.active{color:var(--blue);font-weight:700;border-bottom-color:var(--blue)}.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius)}@media (max-width: 640px){.app-header-brand-sub{display:none}.app-hamburger{display:flex}.app-logout-btn,.app-sidebar{display:none}.app-main{padding:12px 10px 24px}.page-header{flex-direction:column;align-items:stretch}.page-header-actions{flex-wrap:wrap}.page-header-actions>*{flex:1;min-width:0;text-align:center;justify-content:center}.week-nav{flex-wrap:wrap;padding:10px 12px}.week-nav-label{order:-1;width:100%;font-size:14px;text-align:center;margin-bottom:4px}.grid-2col,.grid-3col,.grid-info{grid-template-columns:1fr}.admin-tabs{margin-left:-10px;margin-right:-10px;padding-left:10px;padding-right:10px}}@media (min-width: 641px) and (max-width: 1024px){.app-hamburger{display:flex}.app-logout-btn,.app-sidebar{display:none}.app-main-inner{max-width:100%}.grid-3col{grid-template-columns:1fr 1fr}}@media (min-width: 1025px){.app-hamburger{display:none!important}.app-sidebar{display:flex}.app-drawer,.app-nav-overlay{display:none!important}.app-logout-btn{display:block}.app-main{padding:24px 32px}.app-main-inner{max-width:900px}}