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legend{margin-bottom:var(--space-2);color:var(--color-text-muted);padding:0;font-size:.8125rem;font-weight:600}.provider-options{gap:var(--space-2);flex-direction:column;display:flex}.provider-option{align-items:center;gap:var(--space-2);padding:var(--space-3);border:1px solid var(--color-border-strong);border-radius:var(--radius-sm);cursor:pointer;display:flex}.provider-option:has(input:checked){border-color:var(--color-primary);background:var(--color-surface-alt)}.provider-option-disabled{cursor:not-allowed;opacity:.6}.provider-option-label{flex:1;font-weight:500}.settings-card .btn-primary{width:auto;margin-top:var(--space-2)}.settings-card .feedback-banner,.settings-card .error-box{margin-top:var(--space-4)}.provider-status-list{gap:var(--space-2);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.provider-status-list li{padding:var(--space-3) var(--space-4);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);justify-content:space-between;align-items:center;display:flex}.badge-unavailable{background:var(--color-warning-bg);color:var(--color-warning-text)}.settings-submit-skeleton{width:auto;min-width:10rem;margin-top:var(--space-2)}@media (width<=640px){.invite-card{flex-direction:column;align-items:flex-start}.settings-card{padding:var(--space-4)}}@media (width<=400px){.shell-brand{font-size:1.0625rem}.auth-card{padding:var(--space-4)}}.xp-chip{background:var(--color-xp-bg);color:var(--color-xp-text);white-space:nowrap;font-variant-numeric:tabular-nums;border-radius:999px;align-items:center;gap:.3rem;padding:.2rem .65rem;font-size:.78rem;font-weight:700;display:inline-flex}.profile-menu{position:relative}.profile-avatar{border:1px solid var(--color-border-strong);background:var(--color-surface-alt);width:2.75rem;height:2.75rem;color:var(--color-text-muted);cursor:pointer;border-radius:50%;place-items:center;font-size:.78rem;font-weight:700;display:grid}.profile-avatar:hover{border-color:var(--color-primary);color:var(--color-primary)}.profile-dropdown{z-index:20;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);min-width:210px;box-shadow:var(--shadow-card);padding:var(--space-2);flex-direction:column;gap:.15rem;display:flex;position:absolute;top:calc(100% + .4rem);right:0}.side-foot .profile-dropdown{top:auto;bottom:calc(100% + .4rem)}.profile-name{padding:var(--space-2) var(--space-3);color:var(--color-text-muted);margin:0;font-size:.8rem;font-weight:650}.profile-item{align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);border-radius:var(--radius-sm);min-height:40px;color:var(--color-text);text-align:left;cursor:pointer;background:0 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var(--space-2);letter-spacing:.06em;text-transform:uppercase;color:var(--color-primary);font-size:.75rem;font-weight:700}.grammar-capsule,.player-card{position:relative;overflow:hidden}.badge-cefr{font-family:var(--font-serif);background:var(--color-neutral-bg);color:var(--color-neutral-text)}.badge-score-none{background:var(--color-neutral-bg);color:var(--color-neutral-text)}.badge-score-high{background:var(--color-success-bg);color:var(--color-success-text);gap:.25rem}.badge-score-mid{background:var(--color-warning-bg);color:var(--color-warning-text)}.badge-score-low{background:var(--color-danger-bg);color:var(--color-danger)}.units-list{gap:var(--space-3);flex-direction:column;display:flex}.unit-row{align-items:center;gap:var(--space-4);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:var(--space-4) 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