.freq-btn {
    font-size: 1.05rem;
    font-weight: bold;
    padding: 12px 6px;
    border-radius: 12px;
    border: 2px solid var(--line-color, rgba(128, 128, 128, 0.35));
    background: transparent;
    color: var(--text-color);
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
    line-height: 1.2;
}
.freq-btn .freq-name { font-size: 0.72rem; font-weight: 600; opacity: 0.75; margin-top: 2px; }
.freq-btn:hover, .freq-btn:focus-visible {
    background: rgba(0, 113, 227, 0.1);
    border-color: var(--btn-primary);
    color: var(--btn-primary);
    outline: none;
}
.freq-btn.selected { background: rgba(0, 113, 227, 0.14); border-color: var(--btn-primary); color: var(--btn-primary); }
.freq-btn.correct { background: rgba(40, 167, 69, 0.2); border-color: #28a745; color: #28a745; }
.freq-btn.wrong { background: rgba(220, 53, 69, 0.2); border-color: #dc3545; color: #dc3545; }

.ear-curve {
    display: block; width: 100%; height: 130px; margin-bottom: 0.75rem;
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
}
body.dark-mode .ear-curve { background: rgba(255, 255, 255, 0.04); }

#resultPanel .table { --bs-table-bg: transparent; --bs-table-color: var(--text-color); }
#resultPanel .table th, #resultPanel .table td { background-color: transparent !important; }
#resultPanel .table th { color: var(--text-color) !important; }

.ear-settings {
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 12px 14px;
    background: rgba(0, 113, 227, 0.03);
    min-width: 0;
}
.ear-settings legend { float: none; width: auto; padding: 0; }
body.dark-mode .ear-settings { background: rgba(41, 151, 255, 0.06); }