/*
 * Shared modal shell
 * ------------------
 * Archived Chats established the application-wide dialog treatment.  Keep
 * the historic search-modal names for existing consumers, and expose neutral
 * shared-modal aliases so every feature can reuse the same backdrop, surface,
 * header, body, footer, and motion without duplicating the frame CSS.
 */
.search-modal-overlay,
.shared-modal-overlay {
    --search-modal-border: color-mix(in srgb, var(--text-color) 8%, transparent);
    --search-modal-border-strong: color-mix(in srgb, var(--text-color) 12%, transparent);
    --search-modal-hover: color-mix(in srgb, var(--text-color) 4%, transparent);
    --search-modal-selected: var(--surface-muted);
    --search-modal-vertical-gutter: clamp(16px, 4vh, 48px);
    position: fixed;
    inset: 0;
    z-index: var(--shared-modal-z-index, 2000);
    box-sizing: border-box;
    align-items: center;
    justify-items: center;
    padding: var(--search-modal-vertical-gutter) 16px;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: color-mix(in srgb, var(--text-color) 28%, transparent);
    backdrop-filter: var(--modal-overlay-backdrop-filter);
    -webkit-backdrop-filter: var(--modal-overlay-backdrop-filter);
    animation: search-modal-overlay-in 0.22s ease-out both;
}

.shared-modal-overlay {
    display: grid;
}

/* Dialog controllers use feature-specific state names, but scroll locking is
   a shared shell responsibility. */
body.modal-open,
body.shortcut-palette-open,
body.us-settings-open,
body.admin-shared-modal-open,
body.admin-chat-modal-open,
body.byok-modal-open,
body.code-block-preview-modal-open {
    overflow: hidden;
}

/* Warning dialogs historically toggle an active class instead of hidden. */
.warning-overlay.shared-modal-overlay {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    animation: none;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.warning-overlay.shared-modal-overlay > .shared-modal {
    transform: translateY(8px) scale(0.96);
    animation: none;
    transition: transform 0.2s ease;
}

.warning-overlay.shared-modal-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    animation: search-modal-overlay-in 0.22s ease-out both;
}

.warning-overlay.shared-modal-overlay.active > .shared-modal {
    transform: translateY(0) scale(1);
    animation: search-modal-in 0.28s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.search-modal-overlay[hidden],
.shared-modal-overlay[hidden] {
    display: none;
}

.search-modal-overlay.is-closing:not([hidden]),
.shared-modal-overlay.is-closing:not([hidden]) {
    display: grid;
    pointer-events: none;
    animation: search-modal-overlay-out 0.18s ease-in both;
}

.search-modal-overlay.is-closing:not([hidden]) .search-modal,
.search-modal-overlay.is-closing:not([hidden]) .shared-modal,
.shared-modal-overlay.is-closing:not([hidden]) .search-modal,
.shared-modal-overlay.is-closing:not([hidden]) .shared-modal {
    animation: search-modal-out 0.18s ease-in both;
}

.search-modal,
.shared-modal {
    position: relative;
    display: flex;
    box-sizing: border-box;
    width: min(var(--shared-modal-width, 560px), 100%);
    max-width: var(--shared-modal-width, 560px);
    max-height: calc(100vh - var(--search-modal-vertical-gutter) - var(--search-modal-vertical-gutter));
    max-height: calc(100dvh - var(--search-modal-vertical-gutter) - var(--search-modal-vertical-gutter));
    flex-direction: column;
    overflow: hidden;
    padding: 0;
    border: 1px solid color-mix(in srgb, var(--surface-elevated) 65%, var(--search-modal-border-strong));
    border-radius: var(--modal-border-radius, 16px);
    color: var(--text-color);
    background: color-mix(in srgb, var(--surface-elevated) 94%, transparent);
    backdrop-filter: blur(40px) saturate(1.35);
    -webkit-backdrop-filter: blur(40px) saturate(1.35);
    animation: search-modal-in 0.28s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* Search and list dialogs retain the fixed Archived Chats viewport. */
.search-modal:not(.search-modal--fit),
.shared-modal--fixed {
    height: min(640px, calc(100vh - var(--search-modal-vertical-gutter) - var(--search-modal-vertical-gutter)));
    height: min(640px, calc(100dvh - var(--search-modal-vertical-gutter) - var(--search-modal-vertical-gutter)));
}

/* Content-sized dialogs still cap and scroll safely on short viewports. */
.search-modal--fit,
.shared-modal--fit {
    height: auto;
}

.shared-modal--compact {
    --shared-modal-width: 480px;
}

.shared-modal--wide {
    --shared-modal-width: 720px;
}

.shared-modal--large {
    --shared-modal-width: 960px;
}

/* Forms that own a modal's header/body/footer participate in the same flex
   layout as direct children of the surface. */
.shared-modal-form {
    display: flex;
    min-height: 0;
    flex: 1 1 auto;
    flex-direction: column;
}

.search-modal-header,
.shared-modal-header {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    border-bottom: 1px solid var(--search-modal-border);
}

/* The standard modal header pairs visible heading copy with trailing actions. */
.search-modal-header--main,
.shared-modal-header--main {
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
}

.shared-modal-heading {
    min-width: 0;
}

.search-modal-title,
.shared-modal-title {
    margin: 0;
    color: var(--text-color);
    font-size: 18px;
    font-weight: 600;
    line-height: 1.35;
    text-align: start;
}

.shared-modal-subtitle {
    margin: 4px 0 0;
    color: var(--text-color-secondary);
    font-size: 13px;
    line-height: 1.45;
}

.search-modal-body,
.shared-modal-body {
    min-height: 0;
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 20px;
    overscroll-behavior: contain;
}

.shared-modal-body--centered {
    text-align: center;
}

.search-modal-footer,
.shared-modal-footer {
    display: flex;
    flex: 0 0 auto;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    margin: 0;
    padding: 16px 20px 20px;
    border-top: 1px solid var(--search-modal-border);
    background: color-mix(in srgb, var(--surface-elevated) 96%, transparent);
}

.search-modal-footer .om-button.border,
.shared-modal-footer .om-button.border {
    min-width: 96px;
}

.search-modal-footer .om-button.border.cancel,
.shared-modal-footer .om-button.border.cancel {
    border-color: var(--modal-border, var(--border-color));
    color: var(--modal-secondary-text, var(--text-color-secondary));
    background: var(--modal-secondary-background, transparent);
}

.search-modal-footer .om-button.border.submit,
.shared-modal-footer .om-button.border.submit {
    border-color: var(--modal-primary-background, var(--primary-color));
    color: var(--modal-primary-text, #ffffff);
    background: var(--modal-primary-background, var(--primary-color));
}

.search-modal-footer .om-button.border:focus-visible,
.shared-modal-footer .om-button.border:focus-visible {
    outline: 2px solid var(--modal-border-strong, var(--primary-color));
    box-shadow: 0 0 0 4px var(--modal-focus-ring, transparent);
}

@media (hover: hover) and (pointer: fine) {
    .search-modal-footer .om-button.border.cancel:hover:not(:disabled),
    .shared-modal-footer .om-button.border.cancel:hover:not(:disabled) {
        border-color: var(--modal-border-strong, var(--primary-color));
        color: var(--modal-secondary-text, var(--text-color));
        background: var(--modal-secondary-hover, var(--hover));
    }

    .search-modal-footer .om-button.border.submit:hover:not(:disabled),
    .shared-modal-footer .om-button.border.submit:hover:not(:disabled) {
        border-color: var(--modal-primary-hover, var(--primary-hover));
        background: var(--modal-primary-hover, var(--primary-hover));
    }
}

.shared-modal-close {
    appearance: none;
    display: inline-grid;
    width: 36px;
    height: 36px;
    flex: 0 0 36px;
    place-items: center;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    background: transparent;
    cursor: pointer;
    font: inherit;
}

.shared-modal-close:disabled {
    opacity: 0.38;
    cursor: not-allowed;
}

.shared-modal-close svg {
    width: 20px;
    height: 20px;
}

.shared-modal-close:focus-visible {
    outline: 2px solid var(--modal-border-strong, var(--primary-color));
    outline-offset: 2px;
    box-shadow: 0 0 0 4px var(--modal-focus-ring, transparent);
}

@media (hover: hover) and (pointer: fine) {
    .shared-modal-close:hover {
        background: var(--hover);
    }
}

/* Search headers preserve the compact Command-K control layout. */
.search-modal-header--search,
.shared-modal-header--search {
    min-height: 58px;
    justify-content: flex-start;
    gap: 12px;
    padding: 14px 16px 13px 18px;
}

/* Shared loading and empty states use the original Archived Chats treatment. */
.search-modal-loading,
.search-modal-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin: 0;
    padding: 40px 20px;
    color: var(--text-color-tertiary);
    font-size: 14px;
    text-align: center;
}

.search-modal-loading[hidden],
.search-modal-empty[hidden] {
    display: none;
}

.search-modal-loading p,
.search-modal-empty p {
    margin: 0;
    font-size: inherit;
}

/* A pseudo-element lets text-only states share the same loading indicator. */
.search-modal-loading::before {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spinTo360 0.8s linear infinite;
    content: "";
}

@media (max-width: 640px) {
    .search-modal-overlay,
    .shared-modal-overlay {
        --search-modal-vertical-gutter: 12px;
        align-items: end;
    }

    .search-modal,
    .shared-modal {
        width: 100%;
        max-width: none;
        max-height: min(82vh, 720px);
        max-height: min(82dvh, 720px);
        border-radius: var(--modal-border-radius, 16px);
    }

    .search-modal:not(.search-modal--fit),
    .shared-modal--fixed {
        height: min(82vh, 720px);
        height: min(82dvh, 720px);
    }

    .search-modal-header--main,
    .shared-modal-header--main {
        padding: 14px 16px;
    }

    .search-modal-body,
    .shared-modal-body {
        padding: 16px;
    }

    .search-modal-footer,
    .shared-modal-footer {
        padding: 14px 16px 16px;
    }
}

@media (max-width: 600px) {
    .search-modal-title,
    .shared-modal-title {
        font-size: 16px;
    }

    .search-modal-footer .om-button.border,
    .shared-modal-footer .om-button.border {
        min-width: 0;
        flex: 1 1 0;
    }
}

/* Respect the operating-system preference exposed by the browser. */
@media (prefers-reduced-motion: reduce) {
    .search-modal-overlay,
    .shared-modal-overlay,
    .search-modal,
    .shared-modal {
        animation: none !important;
        transition-duration: 0.01ms !important;
    }

    .search-modal-loading::before {
        animation: none !important;
    }
}