.main-header{height:60px;padding:0 16px;background:#fff;border-bottom:1px solid #eef2f7;display:flex;align-items:center;justify-content:space-between;box-sizing:border-box;position:relative;z-index:100}.brand-link{display:inline-flex;align-items:center;gap:10px;text-decoration:none}.brand-mark{height:34px;width:auto;border-radius:10px;background:#f3f7ff;padding:4px}.top-actions{display:inline-flex;align-items:center;gap:20px;justify-content:flex-end;flex-wrap:wrap}.icon-link{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:10px;color:#334155;font-weight:500;font-size:15px;text-decoration:none;transition:background .18s ease,color .18s ease;white-space:nowrap}.icon-link__icon{width:20px;height:20px;color:#64748b}.icon-link__text{font-size:14px}.icon-link:hover{background:#f3f7ff;color:#0b64d8}.icon-link:hover .icon-link__icon{color:#0b64d8}.icon-link.active{background:#e7efff;color:#0b64d8;font-weight:600}.icon-link.active .icon-link__icon{color:#0b64d8}.notif-bell{width:30px;height:30px;position:relative}.notif-badge{position:absolute;top:-3px;right:-3px;min-width:15px;height:15px;padding:0 4px;border-radius:999px;background:#ef4444;color:#fff;font-size:10px;line-height:15px;font-weight:700;box-shadow:0 1px 2px #0000001f}.user-chip{display:inline-flex;align-items:center;gap:8px;padding:4px 10px;background:#f8fafc;border:1px solid #e8edf4;border-radius:999px;cursor:pointer;transition:background .15s ease}.user-chip:hover{background:#eef4ff}.top-avatar{border:1px solid #e5eaf1}.user-name{font-weight:600;color:#0f172a;display:flex;align-items:center;gap:5px}.user-name:after{content:"▾";font-size:14px;color:#475569;transition:transform .18s ease}.user-chip.menu-open .user-name:after{transform:rotate(180deg);color:#0b64d8}.user-dropdown::part(overlay){border-radius:12px;box-shadow:0 8px 24px #0000001f;padding:6px 0;min-width:220px;border:1px solid #e5eaf1;background:#fff}.user-dropdown vaadin-context-menu-item{display:flex!important;align-items:center;gap:10px;padding:10px 16px;font-weight:500;cursor:pointer;color:#1e293b}.user-dropdown vaadin-context-menu-item:hover{background:#f3f7ff;color:#0b64d8}@media(max-width:900px){.icon-link__text{display:none}.icon-link{padding:10px}.top-actions{gap:12px}}@media(max-width:600px){.main-header{padding:0 10px}.brand-mark{height:30px;padding:2px}}.notif-bell{width:32px;height:32px;position:relative;cursor:pointer}.notif-badge{position:absolute;top:-4px;right:-2px;min-width:16px;height:16px;padding:0 4px;border-radius:999px;background:#ef4444;color:#fff;font-size:11px;line-height:16px;font-weight:700;box-shadow:0 1px 2px #0000001f}.notif-popover{position:absolute;right:0;top:36px;width:320px;background:#fff;border:1px solid #e5e7eb;border-radius:8px;box-shadow:0 4px 10px #00000014;padding:8px}.notif-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.notif-tabs{display:flex;gap:6px;margin-bottom:8px}.notif-tab.active{background:#e0f2fe}.notif-list{max-height:360px;overflow-y:auto}.notif-empty{margin:8px 0;padding-left:10px;color:#64748b}.notif-item{display:flex;align-items:flex-start;padding:10px 12px;gap:10px;border-radius:6px;cursor:pointer;transition:background .15s ease-in-out}.notif-item:hover{background:#f1f5f9}.notif-item.unread{background:#f8fafc}.notif-avatar{width:24px;height:24px}.notif-title{font-weight:600}.notif-msg{margin:0;font-size:13px}.notif-date{color:#94a3b8;font-size:12px}.notif-dot{width:8px;height:8px;border-radius:50%;background:#3b82f6;margin-left:auto;margin-top:4px}.notif-toast{animation:fadeInOut 4s ease}@keyframes fadeInOut{0%{opacity:0;transform:translateY(-10px)}10%,90%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-10px)}}:root{--pr-primary:#1976d2;--pr-primary-10:#e7f1ff;--pr-text:#0f172a;--pr-muted:#64748b;--pr-border:#e6ecf4;--pr-surface:#fff;--pr-shadow:0 4px 18px rgba(16,24,40,.06);--pr-shadow-hover:0 10px 24px rgba(16,24,40,.1);--pr-radius:14px;--pr-gap:16px;--ok:#2e7d32;--late:#d32f2f}.admin-root,.dashboard-root,.student-root{max-width:1100px;margin:16px auto 60px;padding:8px 18px;width:100%;box-sizing:border-box}.card,.peerreview-card,.peerreview-info-note{background:var(--pr-surface);border:1px solid var(--pr-border);border-radius:var(--pr-radius);padding:16px 18px;box-shadow:var(--pr-shadow);margin-bottom:16px}.card:hover{box-shadow:var(--pr-shadow-hover)}h1,h2,h3,h4{color:var(--pr-text);margin:6px 0 10px}.muted{color:var(--pr-muted)}.status-badge{background:var(--pr-primary);color:#fff;padding:6px 14px;border-radius:9999px;font-size:14px;font-weight:800;line-height:1}.badge-late{background:var(--late)}.badge-submitted{background:var(--ok)}.badge-due-soon{background:#f57c00}.badge-not-submitted{background:#546e7a}.date-badge{background:#f7f9fc;color:#374151;border:1px solid rgba(0,0,0,.06);padding:6px 12px;border-radius:9999px;font-weight:700;font-size:13px;line-height:1}.date-soon{color:#b45309}.date-late{color:#b91c1c}.button-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}.next-btn,.btn-submit-green{background:var(--pr-primary);color:#fff;font-weight:700;padding:8px 12px;border-radius:8px;border:none;cursor:pointer;font-size:.95rem}.btn-submit-green{background:#2e7d32}vaadin-progress-bar::part(bar){height:10px;border-radius:999px;background:#edf2f7}vaadin-progress-bar::part(value){border-radius:999px;background:linear-gradient(90deg,#60a5fa,#2563eb)}.main-header{display:flex;align-items:center;justify-content:space-between;width:100%;padding:12px 20px;background:#fff;border-bottom:1px solid var(--pr-border)}.brand-link{display:flex;align-items:center;text-decoration:none;color:inherit}.brand-mark{height:40px;width:auto}.icon-link{display:inline-flex;align-items:center;justify-content:center;padding:8px;border-radius:12px;cursor:pointer}.icon-link:hover{background:#0000000f}.icon-link.active{background:#2563eb24}.icon-link__icon{width:22px;height:22px}.user-chip{display:inline-flex;align-items:center;gap:8px;padding:4px 8px;border-radius:999px}.user-chip:hover{background:#0000000a}.text-link{text-decoration:none;color:inherit}.text-link__label{font-weight:700}.logout-ghost{background:transparent;border:1px solid rgba(0,0,0,.12);font-weight:600}.logout-ghost:hover{background:#0000000f}.top-avatar{--vaadin-avatar-size:32px}.dashboard-header{display:flex;align-items:center;gap:10px;margin-bottom:6px}.hero h1{margin:0}.step-icon{width:32px;height:32px;color:var(--pr-primary)}.kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--pr-gap);margin:10px 0}.kpi{display:grid;grid-template-columns:auto 1fr;column-gap:12px;align-items:center;padding:14px}.kpi-icon{width:32px;height:32px;color:var(--pr-primary);background:var(--pr-primary-10);border-radius:999px;display:grid;place-items:center;padding:6px}.kpi-value{font-size:1.35rem;font-weight:800;line-height:1}.kpi-title{color:var(--pr-muted);font-weight:700}.actions-card{padding:14px}.actions-row{display:flex;flex-wrap:wrap;gap:10px}.action-chip{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;min-height:32px;border-radius:999px;border:1px solid var(--pr-border);background:#fff;box-shadow:0 2px 8px #10182814;font-weight:800;color:#0b64d8;text-decoration:none}.action-chip:hover{background:#eef4ff}.progress-card{display:grid;gap:8px}.timeline{list-style:none;display:grid;gap:10px;padding-left:0;margin:0}.timeline li{position:relative;padding-left:22px}.timeline li:before{content:"";position:absolute;left:6px;top:3px;width:8px;height:8px;background:var(--pr-primary);border-radius:999px}.timeline li:after{content:"";position:absolute;left:9px;top:14px;bottom:-14px;width:2px;background:#e6ecf4}.timeline li:last-child:after{display:none}.act-row{display:flex;align-items:center;gap:10px;padding:10px 0;border-top:1px dashed #e6ecf4}.act-row:first-of-type{border-top:none}.act-ico{width:22px;height:22px;color:var(--pr-primary)}.act-text{font-weight:600}.act-when{color:var(--pr-muted);margin-left:auto}@media(max-width:1180px){.kpis{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:680px){.kpis{grid-template-columns:1fr}.action-chip{min-height:30px;padding:6px 10px}}vaadin-tabs{margin:8px 0 12px}.student-card{margin-top:8px}.pill-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.pill{padding:.15rem .5rem;border-radius:.75rem;font-size:.8rem;border:1px solid transparent}.pill-info{background:#eef2ff;color:#1e40af;border-color:#c7d7fe}.pill-success{background:#eaf7ea;color:#176b2c;border-color:#b7e3c0}.pill-warning{background:#fff4e5;color:#92400e;border-color:#fbc38d}.pill-danger{background:#fde8e8;color:#991b1b;border-color:#fca5a5}.upload-vaadin{border:2px dashed #c9d3e0;padding:12px;background:#fafbff;border-radius:10px}.peerreview-card{position:relative;padding-right:130px}.peerreview-card .peerreview-status{position:absolute;top:16px;right:18px;margin:0;z-index:1}@media(max-width:560px){.peerreview-card{padding-right:18px}.peerreview-card .peerreview-status{position:static;margin-top:6px;display:inline-block}}.peerreview-empty{display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:center;min-height:110px}.peerreview-empty__icon{width:40px;height:40px;padding:8px;border-radius:999px;background:var(--pr-primary-10);color:var(--pr-primary)}.peerreview-empty__title{font-size:1rem;margin:0}.peerreview-empty__text,.peerreview-empty__hint{color:var(--pr-muted);margin:0}vaadin-button.peerreview-btn[disabled]{opacity:.55;filter:saturate(.3);cursor:not-allowed;pointer-events:none}.kpis.admin{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.activity-grid{display:grid;grid-template-columns:repeat(2,minmax(420px,1fr));gap:16px;overflow-x:auto;padding-bottom:4px}.chart-card{border:1px solid var(--pr-border);border-radius:14px;background:#fff;box-shadow:var(--pr-shadow);padding:12px 14px;display:flex;flex-direction:column}.states-wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}.state-tile{background:#f8fafc;border:1px solid var(--pr-border);border-radius:14px;padding:12px 14px}.state-tile__count{display:block;font-size:1.2rem;font-weight:800;margin-bottom:2px}.state-tile__label{color:#475569;font-weight:600}.admin-grid{width:100%}.login-view{height:100vh;display:flex;justify-content:center;align-items:center;background:transparent;flex-direction:column;gap:24px}.register-view{max-width:460px;margin:64px auto;padding:28px;background:#fff;border:1px solid var(--pr-border);border-radius:12px;box-shadow:var(--pr-shadow);display:flex;flex-direction:column;gap:16px}.profile-header{margin-bottom:8px}.alert-pii{background:#fef2f2;border:1px solid #fecaca;border-left:6px solid #e11d48;border-radius:12px;padding:12px 14px;margin:6px 0 12px}.center-toast{width:min(520px,calc(100vw - 2rem));padding:18px 20px;border-radius:16px;background:#fff;box-shadow:0 18px 60px #1018282e;border:1px solid #e9eef5;animation:ct-enter .16s ease-out}.center-toast__header{display:grid;grid-template-columns:auto 1fr auto;gap:.6rem;align-items:center;margin-bottom:.35rem}.center-toast__icon{width:28px;height:28px;display:grid;place-items:center;border-radius:999px;color:var(--ct-accent);background:color-mix(in srgb,var(--ct-accent) 12%,transparent)}.center-toast__title{font-weight:800;color:#0f172a}.center-toast__text{color:#334155;line-height:1.45;margin:0}.center-toast__close{margin-left:.5rem}.center-toast--success{--ct-accent:#16a34a}.center-toast--info{--ct-accent:var(--pr-primary)}.center-toast--warning{--ct-accent:#f59e0b}.center-toast--error{--ct-accent:#ef4444}@keyframes ct-enter{0%{transform:scale(.98);opacity:0}to{transform:scale(1);opacity:1}}.pill-neutral{background:#f1f5f9;color:#334155;border-color:#e2e8f0}.pill-decision-accept{background:#eaf7ea;color:#176b2c;border-color:#b7e3c0}.pill-decision-revision{background:#fff4e5;color:#92400e;border-color:#fbc38d}.pill-decision-reject{background:#fde8e8;color:#991b1b;border-color:#fca5a5}.peerreview-status{font-weight:800;font-size:.9rem;color:#1e3a8a}.status-success{color:#166534}.status-pending{color:#1e40af}.status-danger{color:#b91c1c}.peerreview-deadline{display:inline-block;margin-top:4px;font-weight:700;color:#374151}.peerreview-meta{margin-top:6px;display:flex;gap:10px;flex-wrap:wrap}.peerreview-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}.ghost-btn{background:#f8fafc;border:1px solid var(--pr-border);border-radius:8px}.editor-note,.peerreview-band{border-radius:12px}.ranking-root{background:#f7f9fb;min-height:100vh;padding:2rem 0}.ranking-container{max-width:1200px;margin:0 auto;padding:0 16px}.ranking-container h2{font-weight:800;font-size:clamp(1.6rem,1.2rem + 1.2vw,2.4rem);line-height:1.1;text-align:center;margin:0 0 1.5rem}.podium{display:grid;gap:24px;justify-content:center;align-items:start;grid-template-columns:repeat(3,minmax(260px,1fr));grid-template-rows:60px auto}.podium-card{width:100%;max-width:420px;min-height:220px;padding:1.6rem 2rem;background:linear-gradient(180deg,#eaf4ff,#fff);border:1px solid #dce7f5;border-radius:20px;box-shadow:0 4px 12px #0000000f;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;transition:box-shadow .25s ease;position:relative;z-index:1}.podium-card:hover{box-shadow:0 8px 18px #00000014}.rank-1{grid-column:2;grid-row:1;z-index:5}.rank-2{grid-column:1;grid-row:2}.rank-3{grid-column:3;grid-row:2}.podium-medal{font-size:56px;line-height:1;margin-bottom:.6rem}.paper-title{margin:.25rem 0 .1rem;font-size:1.05rem;font-weight:700;color:#111;text-align:center;min-height:48px;display:flex;align-items:center;justify-content:center}.paper-author{font-size:.9rem;color:#555}.paper-score{font-size:.95rem;color:#333;font-weight:600;margin-top:.2rem}@media(max-width:1024px){.podium{grid-template-columns:repeat(2,minmax(240px,1fr));grid-template-rows:auto auto}.rank-1{grid-column:1 / -1;grid-row:1}.rank-2{grid-column:1;grid-row:2}.rank-3{grid-column:2;grid-row:2}}@media(max-width:600px){.podium{grid-template-columns:1fr;grid-template-rows:auto}.rank-1,.rank-2,.rank-3{grid-column:1;grid-row:auto}}.rank-list{display:flex;flex-direction:column;gap:12px;width:100%;max-width:900px;margin:24px auto 8px}.rank-row{background:#fff;border-radius:14px;box-shadow:0 1px 6px #0000000f;padding:1rem 1.4rem;display:grid;grid-template-columns:70px 1fr minmax(120px,1fr) 80px;align-items:center}.rank-row:hover{background:#f2f6fa;box-shadow:0 2px 10px #00000014}.rank-number{color:#4285f4;font-weight:800}.rank-title{color:#111;font-weight:600}.rank-author{color:#555;text-align:right}.rank-score{color:#00796b;font-weight:800;text-align:right}.pager{display:flex;justify-content:center;align-items:center;gap:.5rem;margin:8px auto 0}.page-info{font-size:.95rem;color:#444}.admin-root .ranking-root{background:transparent;padding:1rem 0}vaadin-dialog-overlay::part(content){border-radius:12px;box-shadow:0 4px 18px #00000026}.primary-btn{background-color:var(--lumo-primary-color);color:#fff}.paper-row{background:#f9fafb;border-radius:10px;padding:8px 12px;transition:background .2s}.paper-row:hover{background:#eef2ff}.forgot-password-page{background-color:var(--lumo-contrast-5pct);min-height:100vh;display:flex;align-items:center;justify-content:center}.forgot-password-page .card{background-color:var(--lumo-base-color);border-radius:var(--lumo-border-radius-l);box-shadow:var(--lumo-box-shadow-m)}.msg.typing{background:#fff;color:#94a3b8;font-size:20px;animation:blink 1s infinite}@keyframes blink{0%,to{opacity:.2}50%{opacity:1}}.suggestion-row{display:flex;flex-direction:column;gap:6px;margin:6px 0 12px;align-items:stretch}.suggestion-btn{width:100%;justify-content:flex-start;text-align:left;background:#eaf1ff;color:#0b64d8;border-radius:10px;font-size:13px;padding:6px 12px;border:none;cursor:pointer;transition:background .2s ease}.suggestion-btn:hover{background:#dbeafe}.msg-user{align-self:flex-end;background:var(--lumo-primary-color);color:#fff;padding:10px 14px;border-radius:14px 14px 0;max-width:80%;word-wrap:break-word;font-size:14px}.msg-bot{align-self:flex-start;background:#f7f7f7;color:#222;padding:10px 14px;border-radius:14px 14px 14px 0;max-width:80%;word-wrap:break-word;line-height:1.6;font-size:14px;box-shadow:0 2px 4px #00000014}.chat-area{display:flex;flex-direction:column;gap:8px;padding:10px}.notif-msg{white-space:normal!important;overflow-wrap:break-word!important;word-break:break-word!important;max-width:280px}.notif-list{overflow-x:hidden!important}vaadin-dialog-overlay[theme~=peerbot-dialog]{position:fixed!important;width:380px!important;height:480px!important;inset:auto 25px 90px auto!important;margin:0!important;transform:none!important;z-index:9999!important}vaadin-dialog-overlay[theme~=peerbot-dialog]::part(overlay),vaadin-dialog-overlay[theme~=peerbot-dialog]::part(content){overflow:hidden!important;display:flex;flex-direction:column;height:100%}.peerbot-header{flex-shrink:0}.input-row{flex-shrink:0;display:flex;align-items:center;padding:8px 10px;border-top:1px solid #e5e7eb;background:#fff;position:sticky;bottom:0;box-sizing:border-box;z-index:1}.chat-area{flex:1;overflow-y:auto;padding:10px 10px 6px;display:flex;flex-direction:column;gap:8px;scroll-behavior:smooth}vaadin-dialog-overlay[theme~=peerbot-dialog]::part(content){padding-bottom:0!important;box-sizing:border-box!important}.peerbot-chat{display:flex;flex-direction:column;height:100%;overflow:hidden}.chat-area{flex:1 1 auto!important;min-height:0!important;overflow-y:auto!important;padding:10px 10px 6px;display:flex;flex-direction:column;gap:8px;scroll-behavior:smooth}.input-row{flex-shrink:0;background:#fff;border-top:1px solid #e5e7eb;padding:8px 10px;display:flex;align-items:center;position:sticky;bottom:0;z-index:2}.chat-area::-webkit-scrollbar{width:6px;opacity:0}.chat-area:hover::-webkit-scrollbar{opacity:1}.chat-area::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:8px}.chat-area::-webkit-scrollbar-thumb:hover{background:#94a3b8}.peerbot-header{background:linear-gradient(90deg,var(--lumo-primary-color) 0%,#0056d2 100%);color:#fff;padding:10px 14px;font-weight:700;font-size:15px;display:flex;justify-content:space-between;align-items:center;border-radius:16px 16px 0 0;box-shadow:0 2px 4px #00000026}.peerbot-title{display:flex;align-items:center;gap:6px;font-weight:700;font-size:15px;letter-spacing:.2px}.peerbot-title:before{content:"🤖";font-size:18px}.peerbot-min-btn{background:#ffffff26;color:#fff;border:none;border-radius:6px;cursor:pointer;width:28px;height:28px;display:flex;align-items:center;justify-content:center;transition:background .2s ease}.peerbot-min-btn:hover{background:#ffffff4d}vaadin-dialog-overlay[theme~=peerbot-dialog]::part(overlay){background:#fff!important;border-radius:16px!important;box-shadow:0 8px 28px #0000002e!important;overflow:hidden!important;margin:0!important;padding:0!important}vaadin-dialog-overlay[theme~=peerbot-dialog]::part(content){background:transparent!important;padding:0!important;margin:0!important;box-shadow:none!important;border-radius:0!important}.peerbot-header{background:linear-gradient(90deg,var(--lumo-primary-color) 0%,#0056d2 100%);color:#fff;padding:10px 14px;font-weight:700;display:flex;justify-content:space-between;align-items:center;border-radius:16px 16px 0 0;margin:0;box-shadow:none}.peerbot-chat{flex:1;display:flex;flex-direction:column;background:#fff;border-radius:0 0 16px 16px;box-shadow:none;overflow:hidden}.chat-area{flex:1;overflow-y:auto;padding:10px 10px 6px;background:#fff;display:flex;flex-direction:column;gap:8px;scroll-behavior:smooth}.input-row{border-top:1px solid #e5e7eb;background:#fff;padding:8px 10px;display:flex;align-items:center}.peerbot-title:before{content:none!important}.chat-area{flex:1;overflow-y:auto;padding:10px 14px 8px;background:#fff;display:flex;flex-direction:column;gap:10px;scroll-behavior:smooth;box-sizing:border-box}.chat-area::-webkit-scrollbar{width:8px}.chat-area::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:8px;margin-right:4px}