/* ===== Modal Component (hardened) ===== */

/* --- Root container --- */

.ui-modal-root {
    position: fixed;
    inset: 0;
    z-index: var(--modal-root-z-index, 1000);
    pointer-events: none;
}

.ui-modal-root.open,
.ui-modal-root.closing {
    pointer-events: auto;
}

.ui-modal-root.closed {
    pointer-events: none;
}

/* --- Overlay (scrim) --- */

.ui-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--modal-overlay-z-index, 1000);
    background: var(--modal-overlay, color-mix(in srgb, var(--meb-palette-neutral-black) 50%, transparent));
    opacity: 0;
    transition: opacity 180ms ease;
}

.ui-modal-root.open .ui-modal-overlay {
    opacity: 1;
}

.ui-modal-root.closing .ui-modal-overlay {
    opacity: 0;
}

/* --- Wrapper (positioning layer) --- */

.ui-modal-wrapper {
    position: fixed;
    inset: 0;
    z-index: var(--modal-panel-z-index, 1001);
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

/* --- Dialog surface --- */

.ui-modal {
    position: relative;
    display: flex;
    flex-direction: column;
    max-height: 90vh;
    background: var(--modal-background, var(--meb-surface-modal, var(--meb-surface-card)));
    color: var(--modal-foreground, var(--meb-text-modal, var(--meb-text-default)));
    border: 1px solid var(--modal-border, var(--meb-border-modal, var(--meb-border-subtle)));
    border-radius: 12px;
    box-shadow: var(--modal-shadow, var(--meb-shadow-modal, var(--meb-shadow-lg)));
    pointer-events: auto;
    opacity: 0;
    transform: translateY(10px) scale(0.985);
    transition:
        opacity 180ms ease,
        transform 180ms ease;
    will-change: opacity, transform;
}

.ui-modal-root.open .ui-modal {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.ui-modal-root.closing .ui-modal {
    opacity: 0;
    transform: translateY(10px) scale(0.985);
}

.ui-modal:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring-shadow, var(--meb-button-primary-focus-shadow));
}

/* --- Header --- */

.ui-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    font-weight: var(--weight-semibold);
    font-size: var(--text-lg);
    border-bottom: 1px solid var(--modal-border, var(--meb-border-modal, var(--meb-border-subtle)));
}

.ui-modal-header-content {
    flex: 1 1 auto;
    min-width: 0;
}

/* --- Close button --- */

.ui-modal-close {
    appearance: none;
    border: none;
    background: transparent;
    font-size: var(--text-xl);
    line-height: var(--font-lineheight-display);
    cursor: pointer;
    color: var(--modal-foreground, var(--meb-text-modal, var(--meb-text-default)));
    padding: 4px 8px;
    margin: -4px -8px -4px 12px;
    border-radius: 4px;
    flex-shrink: 0;
}

.ui-modal-close:hover {
    opacity: 0.7;
}

.ui-modal-close:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring-shadow, var(--meb-button-primary-focus-shadow));
}

/* --- Body --- */

.ui-modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1 1 auto;
    max-height: 70vh;
}

/* --- Footer --- */

.ui-modal-footer {
    padding: 16px 20px;
    display: flex;
    justify-content: flex-end;
    border-top: 1px solid var(--modal-border, var(--meb-border-modal, var(--meb-border-subtle)));
}

/* --- Loading overlay (covers dialog surface, no layout shift) --- */

.ui-modal-loading {
    position: absolute;
    inset: 0;
    background: color-mix(in srgb, var(--meb-surface-modal, var(--meb-surface-card)) 60%, transparent);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    pointer-events: all;
    border-radius: inherit;
}

.ui-modal-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid color-mix(in srgb, var(--meb-palette-neutral-black) 20%, transparent);
    border-top-color: color-mix(in srgb, var(--meb-palette-neutral-black) 70%, transparent);
    border-radius: 50%;
    animation: ui-modal-spin 0.8s linear infinite;
}

@keyframes ui-modal-spin {
    to {
        transform: rotate(360deg);
    }
}

/* --- Busy state: disable footer actions --- */

.ui-modal-root.busy .ui-modal-footer button {
    pointer-events: none;
    opacity: 0.6;
}

.ui-modal-root.busy .ui-modal-close {
    pointer-events: none;
    opacity: 0.4;
}

/* --- Variant: Default --- */

.ui-modal-wrapper.variant-default .ui-modal {
    width: 500px;
    max-width: calc(100vw - 32px);
}

/* --- Variant: Centered --- */

.ui-modal-wrapper.variant-centered {
    display: flex;
    align-items: center;
    justify-content: center;
}

.ui-modal-wrapper.variant-centered .ui-modal {
    width: 500px;
    max-width: calc(100vw - 32px);
}

/* --- Variant: Fullscreen --- */

.ui-modal-wrapper.variant-fullscreen .ui-modal {
    width: 100vw;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
}

/* --- Reduced motion --- */

@media (prefers-reduced-motion: reduce) {
    .ui-modal-overlay,
    .ui-modal {
        transition: none;
    }
}

/* --- Scroll lock (applied to body via JS) --- */

body.modal-scroll-lock {
    overflow: hidden;
}