/* Shared modal system. Pair with assets/js/modal.js.
   Markup:
   <div class="modal-overlay" id="fooModal">
     <div class="modal" role="dialog" aria-modal="true" aria-labelledby="fooModalTitle">
       <div class="modal-header"><h3 id="fooModalTitle">Title</h3><button class="modal-close" data-modal-close>&times;</button></div>
       <div class="modal-body">...</div>
       <div class="modal-footer">...</div>
     </div>
   </div>
*/

.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--nav-overlay);
    backdrop-filter: blur(3px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-2);
    opacity: 0;
    transition: opacity var(--transition-base);
}
.modal-overlay.open { display: flex; opacity: 1; }

.modal {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(12px) scale(.98);
    transition: transform var(--transition-base);
}
.modal-overlay.open .modal { transform: translateY(0) scale(1); }

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3);
    border-bottom: 1px solid var(--color-border);
}
.modal-header h3 { font-size: 16px; font-weight: 700; color: var(--color-text-primary); }
.modal-close {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 20px;
    line-height: 1;
    color: var(--color-text-muted);
    padding: 4px;
}
.modal-close:hover { color: var(--color-text-primary); }

.modal-body { padding: var(--space-3); }
.modal-footer {
    padding: var(--space-2) var(--space-3);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-1);
}

.modal-sm { max-width: 360px; }
.modal-lg { max-width: 680px; }

@media (max-width: 480px) {
    .modal { max-width: 100%; }
}