@keyframes fadeInBackdrop {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes scaleFadeIn {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}
@keyframes slideUpSheet {
    from { transform: translateY(100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
    .ui-meta-modal, .ui-meta-modal-backdrop {
        animation: none !important;
    }
}

.ui-meta-info-btn {
    background: none;
    border: none;
    padding: 0 0.25rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: baseline;
    line-height: 1;
    color: var(--color-text-muted);
    opacity: 0.8;
    transition: opacity 0.15s, color 0.15s;
    position: relative;
    top: -0.05em;
}
.ui-meta-info-btn:hover {
    opacity: 1;
    color: var(--color-primary-500);
}
.ui-meta-info-btn:focus {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
    opacity: 1;
}

.ui-meta-modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(30, 30, 30, 0.6);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
    animation: fadeInBackdrop 0.2s cubic-bezier(0.4,0,0.2,1);
}

.ui-meta-modal {
    background: var(--color-surface-0);
    color: var(--color-text-header);
    border-radius: 1.25rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    min-width: 320px;
    max-width: 480px;
    width: 90vw;
    padding: 2rem 1.5rem 1.5rem 1.5rem;
    position: relative;
    outline: none;
    animation: scaleFadeIn 0.2s cubic-bezier(0.4,0,0.2,1);
}

.ui-meta-modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity 0.15s, color 0.15s;
    z-index: 1;
}
.ui-meta-modal-close:hover {
    opacity: 1;
    color: var(--color-primary-500);
}

.ui-meta-modal-title {
    margin-top: 0;
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
    font-family: 'Oswald', Arial, sans-serif;
    font-weight: 600;
    letter-spacing: 0.01em;
    color: var(--color-text-header);
    text-transform: uppercase;
}
.ui-meta-modal-content {
    font-size: 1rem;
    color: var(--color-text-header);
    line-height: 1.5;
}
.ui-meta-modal-description {
    font-size: 1rem;
    margin-bottom: 1rem;
}
.ui-meta-modal-example {
    margin-top: 0.5rem;
    background: var(--color-surface-50);
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.95rem;
    color: var(--color-text-input);
}
.ui-meta-modal-coachmark {
    margin-top: 0.75rem;
    color: var(--color-accent-500);
    font-size: 0.95rem;
}
@media (max-width: 768px) {
    .ui-meta-modal-backdrop {
        align-items: flex-end;
        justify-content: center;
        backdrop-filter: blur(2px);
    }
    .ui-meta-modal {
        min-width: 0;
        max-width: 100vw;
        width: 100vw;
        border-radius: 1.25rem 1.25rem 0 0;
        box-shadow: 0 -4px 24px rgba(0,0,0,0.18);
        padding: 1.25rem 1rem 1.5rem 1rem;
        margin: 0;
        position: relative;
        bottom: 0;
        left: 0;
        right: 0;
        animation: slideUpSheet 0.22s cubic-bezier(0.4,0,0.2,1);
    }
    .ui-meta-modal-close {
        top: 0.75rem;
        right: 0.75rem;
    }
}