/* macOS Ventura overlay layer — dropdown, context menu, popover, modal */

#ui-overlay-root {
    inset: 0;
    pointer-events: none;
    position: fixed;
    z-index: 9999;
}

#ui-overlay-root.is-active {
    pointer-events: none;
}

.overlay-backdrop {
    backdrop-filter: blur(10px) saturate(140%);
    -webkit-backdrop-filter: blur(10px) saturate(140%);
    background: var(--backdrop, color-mix(in srgb, var(--bg) 40%, transparent));
    inset: 0;
    opacity: 0;
    pointer-events: auto;
    position: fixed;
    transition: opacity var(--duration-normal) ease-out;
}

.overlay-backdrop.is-visible {
    opacity: 1;
}

.overlay-backdrop.is-quiet {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: transparent;
}

.overlay-backdrop.is-modal {
    background: var(--backdrop-modal, color-mix(in srgb, var(--bg) 55%, transparent));
}

.overlay-surface {
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    background: var(--overlay-bg, var(--surface-elevated));
    border: 1px solid var(--overlay-border, var(--border));
    box-shadow: var(--overlay-shadow, var(--shadow-overlay));
    opacity: 0;
    pointer-events: auto;
    position: fixed;
    transform: scale(0.98) translateY(-2px);
    transform-origin: top left;
    transition:
        opacity var(--duration-normal) var(--ease-ui),
        transform var(--duration-normal) var(--ease-ui);
    z-index: var(--z-overlay-surface);
}

.overlay-surface.is-visible {
    opacity: 1;
    transform: scale(1) translateY(0);
}

.overlay-surface.is-closing {
    opacity: 0;
    transform: scale(0.98) translateY(-1px);
    transition-duration: 150ms;
    transition-timing-function: ease-out;
}

.overlay-surface--menu,
.overlay-surface--dropdown {
    border-radius: var(--radius-lg);
    min-width: 200px;
    overflow: hidden;
    padding: var(--space-2);
}

.overlay-surface.overlay-surface--message-actions {
    backdrop-filter: blur(22px) saturate(120%);
    -webkit-backdrop-filter: blur(22px) saturate(120%);
    background: color-mix(in srgb, var(--theme-section, #121212) 58%, transparent);
    border: 1px solid color-mix(in srgb, var(--theme-tint, #ffffff) 10%, transparent);
    border-radius: 22px;
    box-shadow:
        0 22px 56px rgba(0, 0, 0, 0.48),
        inset 0 1px 0 color-mix(in srgb, var(--theme-tint, #ffffff) 6%, transparent);
    box-sizing: border-box;
    max-width: min(360px, calc(100vw - 32px));
    min-width: 0;
    overflow: visible;
    padding: 10px;
    transform: none;
    width: min(360px, calc(100vw - 32px));
}

.overlay-surface.overlay-surface--message-actions.is-visible,
.overlay-surface.overlay-surface--message-actions.is-closing {
    transform: none;
}

@media (prefers-reduced-transparency: reduce) {
    .overlay-surface.overlay-surface--message-actions {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: var(--theme-section, #141414);
    }
}

.overlay-surface--popover {
    border-radius: var(--radius-xl);
    max-width: min(360px, calc(100vw - 24px));
    padding: var(--space-4);
    width: 320px;
}

.overlay-surface--reaction {
    align-items: center;
    backdrop-filter: blur(36px) saturate(160%);
    -webkit-backdrop-filter: blur(36px) saturate(160%);
    background: var(--composer-glass);
    border: 1px solid var(--composer-glass-stroke);
    border-radius: 28px;
    box-shadow:
        0 8px 28px rgba(0, 0, 0, 0.38),
        0 0 0 1px color-mix(in srgb, var(--theme-tint, #ffffff) 4%, transparent);
    display: flex;
    max-width: calc(100vw - 24px);
    overflow: visible;
    padding: 6px;
    transform: none;
    width: max-content;
}

.overlay-surface--reaction.is-visible,
.overlay-surface--reaction.is-closing {
    transform: none;
}

.overlay-surface--modal {
    border-radius: var(--radius-xl);
    left: 50% !important;
    max-height: min(88vh, 640px);
    max-width: min(440px, calc(100vw - 32px));
    overflow: auto;
    padding: 0;
    top: 50% !important;
    transform: translate(-50%, -50%) scale(0.96);
    transform-origin: center center;
    transition:
        opacity 150ms ease-out,
        transform 150ms ease-out;
    width: 420px;
}

.overlay-surface--modal.is-visible {
    transform: translate(-50%, -50%) scale(1);
}

.overlay-surface--modal.is-closing {
    transform: translate(-50%, -50%) scale(0.98);
    transition-duration: 150ms;
}

.overlay-menu-list {
    display: grid;
    gap: 2px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.overlay-menu-item {
    align-items: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text);
    cursor: pointer;
    display: flex;
    font-family: inherit;
    font-size: var(--text-sm);
    font-weight: 400;
    gap: var(--space-3);
    line-height: var(--leading-tight);
    padding: var(--space-2) var(--space-3);
    text-align: left;
    transition:
        background var(--duration-fast) ease,
        color var(--duration-fast) ease,
        transform var(--duration-fast) ease;
    width: 100%;
}

.overlay-menu-item:active {
    transform: scale(0.99);
}

.overlay-menu-item:hover,
.overlay-menu-item:focus-visible {
    background: var(--hover);
    outline: none;
}

.overlay-menu-item:disabled {
    cursor: default;
    opacity: 0.45;
}

.overlay-menu-item.is-danger {
    color: var(--text-danger);
}

.overlay-menu-item.is-danger:hover {
    background: var(--red-10);
}

.overlay-menu-separator {
    background: var(--border);
    height: 1px;
    margin: 4px 8px;
}

.overlay-menu-kbd {
    color: var(--text-secondary);
    font-size: 11px;
    margin-left: auto;
}

.overlay-popover-title {
    color: var(--text);
    font-size: 15px;
    font-weight: 600;
    margin: 0 0 8px;
}

.overlay-popover-body {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.5;
    margin: 0;
}

.overlay-popover-meta {
    display: grid;
    gap: 8px;
    margin-top: 12px;
}

.overlay-popover-meta dt {
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
}

.overlay-popover-meta dd {
    color: var(--text);
    font-size: 13px;
    margin: 0;
}

.overlay-modal-holder {
    display: none;
}

.message-row.is-highlighted .message-bubble {
    box-shadow: 0 0 0 2px var(--accent-muted), var(--shadow-bubble);
}

/* Message actions drawer (mobile double-tap) — vaul-like bottom sheet */
:root {
    --message-drawer-duration: 520ms;
    --message-drawer-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

.overlay-backdrop.is-drawer {
    backdrop-filter: blur(10px) saturate(130%);
    -webkit-backdrop-filter: blur(10px) saturate(130%);
    background: rgba(0, 0, 0, 0.48);
    transition: opacity var(--message-drawer-duration) var(--message-drawer-ease);
    z-index: 1;
}

/* Thread rides up with the sheet via transform only (no mid-open scroll commit). */
#messages.is-drawer-lifting {
    scroll-behavior: auto !important;
    transition: transform var(--message-drawer-duration) var(--message-drawer-ease);
    will-change: transform;
}

.message-row.is-message-spotlight .message-bubble {
    opacity: 0;
}

.message-actions-spotlight {
    opacity: 0;
    pointer-events: none;
    position: fixed;
    transition:
        opacity 0.28s var(--message-drawer-ease),
        top var(--message-drawer-duration) var(--message-drawer-ease),
        left var(--message-drawer-duration) var(--message-drawer-ease),
        width var(--message-drawer-duration) var(--message-drawer-ease);
    z-index: 2;
}

.message-actions-spotlight.is-visible {
    opacity: 1;
}

.message-actions-spotlight .message-bubble {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
    margin: 0;
    max-width: none;
    pointer-events: none;
    width: 100%;
}

.overlay-surface--drawer {
    background: var(--theme-section, #121212);
    border: 1px solid color-mix(in srgb, var(--theme-tint, #ffffff) 8%, transparent);
    border-bottom: 0;
    border-radius: 24px 24px 0 0;
    bottom: 0 !important;
    box-shadow: 0 -20px 60px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    left: 0 !important;
    max-height: min(78vh, 560px);
    opacity: 1;
    overflow: auto;
    padding: 0 0 calc(10px + env(safe-area-inset-bottom, 0px));
    right: 0 !important;
    top: auto !important;
    transform: translate3d(0, 100%, 0);
    transform-origin: bottom center;
    transition: transform var(--message-drawer-duration) var(--message-drawer-ease);
    will-change: transform;
    width: auto !important;
    z-index: 3;
}

.overlay-surface--drawer.is-visible {
    opacity: 1;
    transform: translate3d(0, 0, 0);
}

.overlay-surface--drawer.is-closing {
    opacity: 1;
    transform: translate3d(0, 100%, 0);
    transition-duration: var(--message-drawer-duration);
    transition-timing-function: var(--message-drawer-ease);
}

.message-actions-drawer__handle {
    background: color-mix(in srgb, var(--theme-text, #ffffff) 18%, transparent);
    border-radius: 999px;
    flex-shrink: 0;
    height: 5px;
    margin: 10px auto 4px;
    width: 44px;
}

.message-actions-drawer__header {
    border-bottom: 1px solid color-mix(in srgb, var(--theme-tint, #ffffff) 6%, transparent);
    padding: 8px 20px 12px;
}

.message-actions-drawer__title {
    color: var(--theme-text, #f4f4f5);
    font-family: var(--f-ui);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin: 0;
    text-align: center;
}

.message-actions-drawer__body {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 14px 12px 8px;
}

.message-actions-drawer__reactions {
    display: flex;
    gap: 6px;
    justify-content: space-between;
    overflow-x: auto;
    padding: 2px 4px 6px;
    scrollbar-width: none;
}

.message-actions-drawer__reactions::-webkit-scrollbar {
    display: none;
}

.message-actions-drawer__reaction {
    align-items: center;
    background: var(--theme-section, #1a1a1a);
    border: 1px solid var(--theme-border, #2a2a2a);
    border-radius: 999px;
    color: var(--theme-text, #fff);
    cursor: pointer;
    display: inline-flex;
    flex: 1 0 auto;
    font-size: 22px;
    height: 44px;
    justify-content: center;
    line-height: 1;
    min-width: 44px;
    padding: 0;
    transition: background 0.15s ease, transform 0.15s ease;
}

.message-actions-drawer__reaction:active {
    transform: scale(0.94);
}

.message-actions-drawer__reaction:hover,
.message-actions-drawer__reaction:focus-visible {
    background: var(--theme-section, #222);
    outline: none;
}

.message-actions-drawer__reaction:disabled {
    cursor: not-allowed;
    opacity: 0.4;
}

.message-actions-drawer__menu {
    background: var(--theme-section, #0c0c0c);
    border: 1px solid var(--theme-border, #1d1d1d);
    border-radius: 16px;
    overflow: hidden;
    padding: 4px;
}

.message-actions-drawer__menu .overlay-menu-item {
    border-radius: 12px;
    font-size: 15px;
    min-height: 48px;
    padding: 12px 14px;
}

@media (prefers-reduced-motion: reduce) {
    .overlay-surface--drawer,
    .overlay-surface--drawer.is-visible,
    .overlay-surface--drawer.is-closing,
    .message-actions-spotlight,
    .message-actions-spotlight.is-visible,
    #messages.is-drawer-lifting {
        transition: none !important;
    }
}