@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap");*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#1c2746;--surface:#222c4d;--surface2:#2e3a5e;--teal:#ff6f5e;--blue:#ffcf5c;--text:#fbf1e2;--muted:#a7b0c8;--border:#34406a;--danger:#ef4444;--icon-color:#fff;--radius:10px;--nav-h:64px;--top-h:54px;--font:"Poppins",ui-sans-serif,system-ui,sans-serif;--font-heading:"Poppins",ui-sans-serif,system-ui,sans-serif}.greeting-name,.login-logo,.section-title,.topbar-brand,h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700}#root,body,html{height:100%}html{overscroll-behavior-y:none}body{font-family:var(--font);font-size:15px;line-height:1.5;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overscroll-behavior:none}:focus-visible{outline:2px solid var(--teal);outline-offset:2px}i.fa-brands,i.fa-regular,i.fa-solid,i[class*=fa-]{color:var(--icon-color)}.side-brand{display:none}.shell{margin:0 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option{background:var(--surface2);color:var(--text)}textarea.form-input{min-height:120px;resize:vertical;line-height:1.5}.segment{display:flex;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:3px;gap:2px}.seg-btn{flex:1 1;padding:7px;border:none;background:transparent;font-family:var(--font);font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);cursor:pointer;border-radius:6px;transition:background .15s,color .15s}.seg-btn.active{background:var(--surface2);color:var(--teal);border:1px solid var(--border)}.check-list{display:flex;flex-direction:column;gap:6px}.check-item{display:flex;align-items:center;gap:10px;padding:10px 12px;background:var(--surface);border:1px solid var(--border);border-radius:8px;cursor:pointer;font-size:14px;color:var(--text);transition:border-color .15s}.check-item:hover{border-color:var(--teal)}.check-item input{accent-color:var(--teal);width:16px;height:16px}.info-box{padding:12px 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.15s}.secondary-btn:hover{border-color:var(--teal);color:var(--text)}.danger-btn{width:100%;padding:13px;background:var(--danger);color:var(--bg);border:none;border-radius:var(--radius);font-family:var(--font);font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;cursor:pointer;transition:opacity .15s}.danger-btn:hover{opacity:.9}.danger-btn:active{opacity:.8}.cog-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;flex-shrink:0;border:none;border-radius:var(--radius);background:var(--teal);color:var(--bg);font-size:15px;cursor:pointer;text-decoration:none;transition:opacity .15s}.cog-btn:hover{opacity:.9}.add-btn,.cog-btn i{color:var(--bg)}.add-btn{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;flex-shrink:0;border:none;border-radius:var(--radius);background:var(--teal);font-size:15px;cursor:pointer;text-decoration:none;transition:opacity 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var(--teal);border-radius:var(--radius);padding:14px 16px;display:flex;flex-direction:column;gap:12px;box-shadow:0 8px 28px rgba(0,0,0,.45)}.pwa-prompt-body{display:flex;align-items:center;gap:12px}.pwa-prompt-icon{width:40px;height:40px;flex-shrink:0;border-radius:10px;background:var(--teal);display:flex;align-items:center;justify-content:center;font-size:18px}.pwa-prompt-text{min-width:0}.pwa-prompt-title{font-size:14px;font-weight:600;color:var(--text)}.pwa-prompt-sub{font-size:12px;color:var(--muted);margin-top:2px}.pwa-prompt-actions{display:flex;gap:8px;justify-content:flex-end}.pwa-install-btn{padding:8px 16px;border:none;border-radius:8px;background:var(--teal);color:var(--bg);font-weight:600}.pwa-dismiss-btn,.pwa-install-btn{font-family:var(--font);font-size:13px;cursor:pointer}.pwa-dismiss-btn{padding:8px 14px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--muted);font-weight:500;transition:color .15s,border-color 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var(--border)}.avatar-edit-controls{display:flex;flex-direction:column;gap:8px;align-items:flex-start}.brand-logo-preview{width:104px;height:56px;border-radius:8px;background:var(--surface2);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--muted);overflow:hidden;flex-shrink:0}.brand-logo-preview img{max-width:100%;max-height:100%;object-fit:contain}.avatar-options{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.avatar-pick{width:46px;height:46px;border-radius:50%;border:2px solid transparent;background:none;cursor:pointer;padding:0;transition:border-color .15s}.avatar-pick.active{border-color:var(--teal)}.avatar-pick:hover:not(.active){border-color:var(--muted)}.avatar-menu{position:relative;display:inline-flex}.avatar-dropdown{position:absolute;top:calc(100% + 8px);right:0;min-width:168px;background:var(--surface2);border:1px solid var(--border);border-radius:10px;padding:6px;display:flex;flex-direction:column;gap:2px;box-shadow:0 8px 24px rgba(0,0,0,.45);opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity .15s,transform .15s,visibility .15s;z-index:100}.avatar-dropdown:before{content:"";position:absolute;top:-8px;left:0;right:0;height:8px}.avatar-menu.open .avatar-dropdown,.avatar-menu:hover .avatar-dropdown{opacity:1;visibility:visible;transform:translateY(0)}.avatar-dropdown-item{display:flex;align-items:center;gap:8px;padding:9px 12px;border-radius:6px;font-size:13px;font-weight:500;color:var(--text);background:none;border:none;cursor:pointer;text-decoration:none;font-family:var(--font);text-align:left;width:100%}.avatar-dropdown-item:hover{background:var(--surface)}.avatar-dropdown-item .menu-icon{font-size:14px;width:18px;text-align:center}.theme-row{cursor:default}.theme-row:hover{background:none}.theme-toggle{position:relative;flex-shrink:0;width:56px;height:28px;padding:0;border:1px solid var(--border);border-radius:999px;background:var(--surface2);cursor:pointer;transition:background .15s}.theme-toggle .tt-moon,.theme-toggle .tt-sun{position:absolute;top:50%;transform:translateY(-50%);font-size:11px;color:var(--muted)}.theme-toggle .tt-sun{left:8px}.theme-toggle .tt-moon{right:8px}.theme-toggle-knob{position:absolute;top:2px;left:2px;width:22px;height:22px;border-radius:50%;background:var(--teal);display:flex;align-items:center;justify-content:center;transition:transform .2s ease}.theme-toggle .theme-toggle-knob i{font-size:11px;color:var(--bg)}.theme-toggle.dark .theme-toggle-knob{transform:translateX(28px)}.profile-header{margin:14px 16px 0;background:var(--surface);border-radius:var(--radius);padding:20px 16px;gap:14px;border:1px solid var(--border);border-left:3px solid var(--teal)}.profile-av,.profile-header{display:flex;align-items:center}.profile-av{width:52px;height:52px;border-radius:50%;background:var(--teal);color:var(--bg);justify-content:center;font-size:16px;font-weight:600;flex-shrink:0}.profile-name{font-size:17px;font-weight:600;color:var(--text)}.profile-role{font-size:12px;font-weight:500;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-top:2px}.menu-list{display:flex;flex-direction:column;gap:6px;padding:14px 16px}.menu-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:13px 14px;display:flex;align-items:center;gap:12px;cursor:pointer;transition:border-color .15s;-webkit-tap-highlight-color:transparent;font-family:var(--font)}.menu-item:hover{border-color:var(--blue)}.menu-item{text-decoration:none;color:var(--text);text-align:left}.menu-icon{font-size:16px;width:22px;text-align:center;flex-shrink:0}.menu-label{flex:1 1;font-size:14px;font-weight:400;color:var(--text)}.menu-arrow{color:var(--muted);font-size:14px}.menu-item.danger .menu-label{color:var(--text)}.menu-item.danger .menu-icon{color:var(--danger)}.menu-item.danger:hover{border-color:var(--danger)}.login-wrap{min-height:100dvh;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:24px}.login-card{background:var(--surface);border-radius:14px;padding:32px 24px;width:100%;max-width:360px;border:1px solid var(--border);border-top:3px solid var(--teal)}.login-logo{font-size:22px;font-weight:700;color:var(--text);margin-bottom:4px}.login-logo span{color:var(--teal)}.login-tagline{font-size:12px;font-weight:500;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:24px}.tab-bar{display:flex;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:3px;gap:2px;margin-bottom:20px}.tab-btn{flex:1 1;padding:8px;border:none;background:transparent;font-family:var(--font);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);cursor:pointer;border-radius:6px;transition:all .15s}.tab-btn.active{background:var(--surface2);color:var(--teal);border:1px solid var(--border)}.form-group{margin-bottom:12px}.login-hint{text-align:center;font-size:11px;color:var(--muted);margin-top:12px;line-height:1.7}@media (min-width:768px){:root{--side-w:232px;--shell-max:1200px}.shell{max-width:none;height:100dvh;display:grid;grid-template-columns:var(--side-w) 1fr;grid-template-rows:var(--top-h) 1fr;grid-template-areas:"nav top" "nav main"}.topbar{grid-area:top}.scroll-area{grid-area:main;padding:0 8px 24px}.bottom-nav{grid-area:nav;height:auto;flex-direction:column;justify-content:flex-start;align-items:stretch;gap:4px;padding:12px 12px env(safe-area-inset-bottom)}.side-brand{display:block;font-size:17px;font-weight:600;color:var(--text);letter-spacing:-.01em;padding:8px 12px 16px}.side-brand span{color:var(--teal)}.nav-tab{flex:0 0 auto;flex-direction:row;justify-content:flex-start;gap:14px;padding:11px 14px;border-radius:var(--radius);transition:background .15s,color .15s}.nav-tab:hover{background:var(--surface2);color:var(--text)}.nav-tab.active{background:var(--teal);color:var(--bg)}.nav-icon{font-size:16px;width:20px;text-align:center}.nav-label{font-size:13px;font-weight:500;text-transform:none;letter-spacing:0}.resource-list,.student-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));grid-gap:10px;gap:10px}.menu-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}.info-box,.mini-player,.news-detail,.news-list,.upload-form{max-width:640px}}.news-list{display:flex;flex-direction:column;gap:8px;padding:0 16px}.news-row{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:10px;text-decoration:none}.news-row:hover{border-color:var(--teal)}.news-thumb{width:60px;height:60px;flex-shrink:0;border-radius:8px;overflow:hidden;display:flex;align-items:center;justify-content:center;background:var(--teal)}.news-thumb img{width:100%;height:100%;object-fit:cover;display:block}.news-thumb i{color:#fff;font-size:24px}.news-row-info{flex:1 1;min-width:0}.news-tag{display:inline-block;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--teal);background:var(--surface2);padding:2px 8px;border-radius:999px;margin-bottom:5px}.news-row-title{font-family:var(--font-heading,var(--font));font-weight:500;font-size:15px;color:var(--text)}.news-row-title.unread{font-weight:700}.news-row-sub{font-size:12px;color:var(--muted);margin-top:2px}.news-unread-dot{width:10px;height:10px;border-radius:50%;background:var(--danger);flex-shrink:0}.news-detail{padding:0 16px}.news-detail-img{width:100%;max-height:320px;object-fit:cover;border-radius:var(--radius);margin-bottom:12px;display:block}.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px}.news-cat{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--teal)}.news-date{font-size:12px;color:var(--muted)}.news-title{font-family:var(--font-heading,var(--font));font-weight:700;font-size:17px;color:var(--text);margin-bottom:8px}.news-text{font-size:14px;color:var(--text);white-space:pre-wrap;line-height:1.55}.news-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px}.news-author{font-size:12px;color:var(--muted)}.modal-overlay{position:fixed;inset:0;z-index:1000;background:rgba(5,8,16,.62);display:flex;align-items:center;justify-content:center;padding:20px}.modal-card{width:100%;max-width:400px;max-height:calc(100vh - 40px);overflow-y:auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 18px 16px;box-shadow:0 16px 48px rgba(0,0,0,.5)}.modal-title{font-family:var(--font-heading,var(--font));font-weight:700;font-size:18px;color:var(--text);margin-bottom:12px}.modal-desc{font-size:13px;color:var(--muted);margin-bottom:14px;line-height:1.5}.modal-actions{display:flex;align-items:center;justify-content:flex-end;gap:12px;margin-top:6px}.modal-btn{width:auto;padding:11px 20px}