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h2{font-size:1.2rem;font-weight:700}.scoreboards-empty{text-align:center;color:var(--text2);padding:40px 20px;font-size:.9rem;line-height:1.6;background:var(--bg2);border:1px solid var(--border);border-radius:8px}.scoreboards-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}.scoreboards-summary-card{display:flex;flex-direction:column;align-items:center;gap:4px;background:var(--bg2);border:1px solid var(--border);border-radius:8px;padding:16px 12px}.scoreboards-summary-value{font-size:1.3rem;font-weight:700;color:var(--text)}.scoreboards-summary-label{font-size:.72rem;color:var(--text2);text-transform:uppercase;letter-spacing:.5px;font-weight:600}.scoreboards-best{color:var(--green)}.scoreboards-section-badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px}.scoreboards-section-badge.section-easy{background:var(--easy);color:#1a1a2e}.scoreboards-section-badge.section-intermediate{background:var(--intermediate);color:#1a1a2e}.scoreboards-section-badge.section-advanced{background:var(--advanced);color:#fff}.scoreboards-section-badge.section-all{background:var(--accent2);color:#fff}.scoreboards-good{color:var(--green);font-weight:700}.scoreboards-ok{color:var(--gold);font-weight:700}.scoreboards-poor{color:var(--accent);font-weight:700}.scoreboards-solved-cell{color:var(--green)}.scoreboards-failed-cell{color:var(--accent)}.guide-tab[data-section=Easy].active{color:var(--easy);border-bottom-color:var(--easy)}.guide-tab[data-section=Intermediate].active{color:var(--intermediate);border-bottom-color:var(--intermediate)}.guide-tab[data-section=Advanced].active{color:var(--advanced);border-bottom-color:var(--advanced)}@media(max-width:600px){.container{padding:12px}header h1{font-size:1.2rem}.header-top{flex-direction:column;gap:8px}.puzzle-info{flex-direction:column;text-align:center}.puzzle-meta{text-align:center}.controls{gap:5px}.controls button{padding:6px 12px;font-size:.8rem}.login-card{padding:24px 16px}.admin-create-token{flex-direction:column}.guide-article{padding:18px 14px}.guide-tabs{gap:0}.guide-tab{padding:8px 12px;font-size:.78rem}.motif-grid{grid-template-columns:1fr}.gv-body{flex-direction:column}.gv-board{width:100%}.gv-notation{max-height:200px}.session-panel{flex-direction:column;text-align:center}.session-info{flex-direction:column;gap:6px}.session-controls{justify-content:center}.modal-card{padding:24px 16px}.scoreboard-stats{gap:10px}.scoreboards-summary{grid-template-columns:repeat(2,1fr)}}