.chat-app-dialog::backdrop,
.chat-compose-dialog::backdrop {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.72), rgba(127, 29, 29, 0.34));
    backdrop-filter: blur(10px);
}

.chat-app-modal-box,
.chat-compose-modal {
    border: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 72%, transparent);
    background:
        radial-gradient(circle at top right, rgba(190, 24, 93, 0.05), transparent 34%),
        linear-gradient(180deg, color-mix(in oklab, oklch(var(--b1) / 1) 92%, rgba(15, 23, 42, 0.04)) 0%, oklch(var(--b1) / 1) 100%);
    box-shadow: 0 16px 48px rgba(15, 23, 42, 0.18);
}

.chat-app-modal-box {
    width: min(96vw, 1240px);
    max-width: none;
    height: min(92vh, 900px);
    padding: 0;
    overflow: hidden;
}

.chat-app-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.25rem 1.5rem 1rem;
    border-bottom: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 70%, transparent);
}

.chat-app-topbar-copy {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.chat-app-eyebrow {
    margin: 0;
    font-size: 0.73rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 48%, transparent);
}

.chat-app-title {
    margin: 0;
    font-size: clamp(1.15rem, 1vw + 1rem, 1.55rem);
    font-weight: 700;
}

.chat-app-topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.chat-app-status-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.5rem 0.8rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    color: #0f172a;
    background: rgba(52, 211, 153, 0.88);
    box-shadow: 0 1px 3px rgba(16, 185, 129, 0.12);
}

.chat-app-status-pill::before {
    content: "";
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.82);
}

.chat-app-flash {
    margin: 0 1.5rem 1rem;
}

.chat-app-layout {
    display: grid;
    grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
    min-height: 0;
    height: calc(100% - 88px);
}

.chat-app-sidebar {
    display: flex;
    flex-direction: column;
    min-height: 0;
    border-right: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 70%, transparent);
    background: color-mix(in oklab, oklch(var(--b2) / 1) 92%, transparent);
}

.chat-app-sidebar-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 1.1rem 1.1rem 0.85rem;
}

.chat-app-sidebar-label {
    margin: 0 0 0.3rem;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 48%, transparent);
}

.chat-app-sidebar-title-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.chat-app-sidebar-title-row h4 {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
}

.chat-app-count-pill {
    display: inline-flex;
    align-items: center;
    min-width: 1.8rem;
    justify-content: center;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    background: color-mix(in oklab, oklch(var(--p) / 1) 16%, transparent);
    color: oklch(var(--pc) / 1);
}

.chat-app-search {
    margin: 0 1.1rem;
}

.chat-app-search .input {
    background: color-mix(in oklab, oklch(var(--b2) / 1) 88%, transparent);
    border: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 70%, transparent);
    border-radius: 0.55rem;
    font-size: 0.82rem;
    transition: border-color 150ms ease, box-shadow 150ms ease;
}

.chat-app-search .input:focus-within {
    border-color: color-mix(in oklab, oklch(var(--p) / 1) 40%, oklch(var(--b3) / 1));
    box-shadow: 0 0 0 2px color-mix(in oklab, oklch(var(--p) / 1) 12%, transparent);
    outline: none;
}

.chat-app-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    padding: 0.95rem 1.1rem 0.9rem;
}

.chat-filter-button[data-active="true"] {
    background: color-mix(in oklab, oklch(var(--p) / 1) 86%, white 10%);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 1px 4px rgba(190, 24, 93, 0.12);
}

.chat-app-list {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    padding: 0 0.9rem 1rem;
    overflow-y: auto;
}

.chat-app-list-item {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.85rem;
    width: 100%;
    padding: 0.95rem;
    text-align: left;
    border-radius: 0.75rem;
    border: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 74%, transparent);
    background: color-mix(in oklab, oklch(var(--b1) / 1) 96%, transparent);
    transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.chat-app-list-item:hover {
    transform: translateY(-1px);
    border-color: color-mix(in oklab, oklch(var(--p) / 1) 22%, oklch(var(--b3) / 1));
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.05);
}

.chat-app-list-item--active {
    border-color: color-mix(in oklab, oklch(var(--p) / 1) 38%, transparent);
    background: color-mix(in oklab, oklch(var(--p) / 1) 8%, oklch(var(--b1) / 1));
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}

.chat-app-list-item--unread {
    border-color: color-mix(in oklab, oklch(var(--p) / 1) 20%, oklch(var(--b3) / 1));
}

.chat-app-avatar-wrap {
    position: relative;
}

.chat-app-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.8rem;
    height: 2.8rem;
    border-radius: 0.65rem;
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    color: #fff;
    background: rgba(157, 29, 73, 0.88);
    box-shadow: 0 2px 6px rgba(127, 29, 29, 0.14);
}

.chat-app-avatar--large {
    width: 3.2rem;
    height: 3.2rem;
    border-radius: 0.75rem;
    font-size: 1rem;
}

.chat-app-presence-dot {
    position: absolute;
    right: -0.05rem;
    bottom: -0.05rem;
    width: 0.85rem;
    height: 0.85rem;
    border-radius: 999px;
    border: 2px solid oklch(var(--b1) / 1);
    background: #34d399;
}

.chat-app-list-copy {
    min-width: 0;
}

.chat-app-list-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
}

.chat-app-list-name {
    font-weight: 700;
    font-size: 0.96rem;
    line-height: 1.2;
}

.chat-app-list-time {
    flex-shrink: 0;
    font-size: 0.72rem;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 48%, transparent);
}

.chat-app-list-subtitle,
.chat-app-list-preview {
    margin-top: 0.28rem;
    font-size: 0.8rem;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 66%, transparent);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-app-list-preview {
    color: color-mix(in oklab, oklch(var(--bc) / 1) 56%, transparent);
}

.chat-app-list-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: space-between;
    gap: 0.45rem;
}

.chat-app-thread {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    background: color-mix(in oklab, oklch(var(--b1) / 1) 98%, transparent);
}

.chat-app-empty {
    display: flex;
    flex: 1;
    align-items: center;
    justify-content: center;
    min-height: 0;
    padding: 2rem;
}

.chat-app-empty-card {
    max-width: 28rem;
    padding: 1.8rem;
    border-radius: 0.75rem;
    border: 1px dashed color-mix(in oklab, oklch(var(--b3) / 1) 78%, transparent);
    background: color-mix(in oklab, oklch(var(--b1) / 1) 94%, transparent);
    text-align: center;
}

.chat-app-empty-title {
    margin: 0.9rem 0 0.35rem;
    font-size: 1.15rem;
    font-weight: 700;
}

.chat-app-empty-copy {
    margin: 0 0 1.3rem;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 62%, transparent);
}

.chat-app-empty-icon {
    width: 3.5rem;
    height: 3.5rem;
    margin: 0 auto;
    border-radius: 0.65rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: rgba(157, 29, 73, 0.88);
    box-shadow: 0 2px 6px rgba(127, 29, 29, 0.14);
}

.chat-app-thread-view {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.chat-app-thread-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.1rem 1.35rem 0.95rem;
    border-bottom: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 68%, transparent);
}

.chat-app-thread-head-copy {
    display: flex;
    align-items: center;
    gap: 0.95rem;
    min-width: 0;
}

.chat-app-thread-head-copy h4 {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 700;
}

.chat-app-thread-subtitle {
    margin: 0.2rem 0 0;
    font-size: 0.82rem;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 58%, transparent);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-app-thread-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.45rem;
    flex-shrink: 0;
}

.chat-app-participants {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    padding: 0.85rem 1.35rem 0;
}

.chat-app-participant-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.42rem 0.7rem;
    border-radius: 999px;
    font-size: 0.76rem;
    border: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 72%, transparent);
    background: color-mix(in oklab, oklch(var(--b1) / 1) 96%, transparent);
}

.chat-app-chip-dot {
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 999px;
    background: color-mix(in oklab, oklch(var(--bc) / 1) 26%, transparent);
}

.chat-app-chip-dot--online {
    background: #34d399;
}

.chat-app-messages {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 1.25rem 1.35rem;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.chat-app-day-divider {
    display: flex;
    justify-content: center;
    margin: 0.4rem 0;
}

.chat-app-day-divider span {
    padding: 0.28rem 0.85rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    background: color-mix(in oklab, oklch(var(--b2) / 1) 92%, transparent);
    color: color-mix(in oklab, oklch(var(--bc) / 1) 52%, transparent);
    border: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 70%, transparent);
}

.chat-app-message-row {
    display: flex;
    align-items: flex-end;
    gap: 0.7rem;
    max-width: 80%;
}

.chat-app-message-row--own {
    align-self: flex-end;
    justify-content: flex-end;
}

.chat-app-message-row--system {
    align-self: center;
    max-width: min(90%, 28rem);
}

.chat-app-message-meta {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    margin: 0 0 0.35rem;
    font-size: 0.72rem;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 50%, transparent);
}

.chat-app-message-author {
    font-weight: 700;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 80%, transparent);
}

.chat-app-message-card {
    padding: 0.9rem 1rem;
    border-radius: 0.85rem 0.85rem 0.85rem 0.35rem;
    border: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 72%, transparent);
    background: color-mix(in oklab, oklch(var(--b1) / 1) 98%, transparent);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}

.chat-app-message-card--own {
    border-color: transparent;
    border-radius: 0.85rem 0.85rem 0.35rem 0.85rem;
    color: #fff;
    background: linear-gradient(135deg, rgba(127, 29, 29, 0.96), rgba(190, 24, 93, 0.9));
    box-shadow: 0 4px 12px rgba(127, 29, 29, 0.16);
}

.chat-app-message-card--system {
    border-radius: 999px;
    padding: 0.6rem 0.95rem;
    background: color-mix(in oklab, oklch(var(--b2) / 1) 92%, transparent);
}

.chat-app-message-content {
    font-size: 0.93rem;
    line-height: 1.55;
    word-break: break-word;
}

.chat-app-message-content a {
    text-decoration: underline;
    text-underline-offset: 0.16em;
    font-weight: 600;
}

.chat-app-message-card--own .chat-app-message-content a {
    color: rgba(255, 255, 255, 0.92);
}

.chat-app-message-attachments {
    display: grid;
    gap: 0.7rem;
    margin-top: 0.85rem;
}

.chat-app-attachment-card {
    display: grid;
    gap: 0.55rem;
    padding: 0.75rem;
    border-radius: 1rem;
    background: color-mix(in oklab, oklch(var(--b2) / 1) 92%, transparent);
    border: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 78%, transparent);
}

.chat-app-message-card--own .chat-app-attachment-card {
    background: rgba(255, 255, 255, 0.13);
    border-color: rgba(255, 255, 255, 0.18);
}

.chat-app-attachment-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.chat-app-attachment-name {
    font-size: 0.82rem;
    font-weight: 700;
}

.chat-app-attachment-meta {
    font-size: 0.72rem;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 55%, transparent);
}

.chat-app-message-card--own .chat-app-attachment-meta {
    color: rgba(255, 255, 255, 0.76);
}

.chat-app-attachment-actions {
    display: flex;
    gap: 0.55rem;
    flex-wrap: wrap;
}

.chat-app-image-preview {
    display: block;
    overflow: hidden;
    border-radius: 0.9rem;
}

.chat-app-image-preview img {
    display: block;
    width: 100%;
    max-height: 220px;
    object-fit: cover;
}

.chat-app-typing {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0 1.35rem 0.8rem;
    padding: 0.5rem 0.8rem;
    border-radius: 999px;
    width: fit-content;
    font-size: 0.77rem;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 62%, transparent);
    background: color-mix(in oklab, oklch(var(--b2) / 1) 90%, transparent);
}

.chat-app-typing::before {
    content: "";
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 999px;
    background: color-mix(in oklab, oklch(var(--p) / 1) 50%, transparent);
    animation: chat-app-pulse 1.1s ease-in-out infinite;
}

.chat-app-composer {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    padding: 1rem 1.35rem 1.2rem;
    border-top: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 68%, transparent);
    background: color-mix(in oklab, oklch(var(--b1) / 1) 98%, transparent);
}

.chat-app-attachment-queue {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.chat-app-attachment-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.45rem 0.75rem;
    border-radius: 999px;
    font-size: 0.78rem;
    border: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 72%, transparent);
    background: color-mix(in oklab, oklch(var(--b2) / 1) 92%, transparent);
}

.chat-app-composer-row {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.7rem;
    align-items: flex-end;
}

.chat-app-composer textarea {
    min-height: 3.25rem;
    max-height: 10rem;
    resize: none;
}

.chat-app-composer-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    font-size: 0.73rem;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 54%, transparent);
}

.chat-app-loading {
    padding: 1.2rem 1rem;
    border-radius: 1rem;
    border: 1px dashed color-mix(in oklab, oklch(var(--b3) / 1) 78%, transparent);
    text-align: center;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 55%, transparent);
}

.chat-compose-modal {
    width: min(94vw, 720px);
    max-width: none;
}

.chat-compose-toggle {
    display: inline-flex;
    padding: 0.35rem;
    border-radius: 999px;
    border: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 76%, transparent);
    background: color-mix(in oklab, oklch(var(--b1) / 1) 94%, transparent);
}

.chat-compose-toggle button {
    border-radius: 999px;
}

.chat-user-picker-list {
    display: grid;
    gap: 0.65rem;
    max-height: 22rem;
    overflow-y: auto;
}

.chat-user-picker-item {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.8rem;
    width: 100%;
    padding: 0.85rem 0.9rem;
    border-radius: 0.65rem;
    border: 1px solid color-mix(in oklab, oklch(var(--b3) / 1) 76%, transparent);
    background: color-mix(in oklab, oklch(var(--b1) / 1) 96%, transparent);
    text-align: left;
    transition: transform 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.chat-user-picker-item:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}

.chat-user-picker-item--selected {
    border-color: color-mix(in oklab, oklch(var(--p) / 1) 34%, transparent);
    box-shadow: 0 2px 8px rgba(190, 24, 93, 0.1);
}

.chat-user-picker-copy {
    min-width: 0;
}

.chat-user-picker-name {
    font-weight: 700;
}

.chat-user-picker-email {
    font-size: 0.8rem;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 58%, transparent);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-modal-note {
    margin: 0.85rem 0 0;
    font-size: 0.8rem;
    color: color-mix(in oklab, oklch(var(--bc) / 1) 60%, transparent);
}

@keyframes chat-app-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.55;
    }
    50% {
        transform: scale(1.18);
        opacity: 1;
    }
}

@media (max-width: 1024px) {
    .chat-app-layout {
        grid-template-columns: minmax(280px, 320px) minmax(0, 1fr);
    }

    .chat-app-message-row {
        max-width: 92%;
    }
}

@media (max-width: 860px) {
    .chat-app-modal-box {
        width: 100vw;
        height: 100vh;
        max-height: none;
        border-radius: 0;
    }

    .chat-app-layout {
        grid-template-columns: minmax(0, 1fr);
        height: calc(100% - 88px);
    }

    .chat-app-layout[data-panel="list"] .chat-app-thread {
        display: none;
    }

    .chat-app-layout[data-panel="thread"] .chat-app-sidebar {
        display: none;
    }

    .chat-app-topbar,
    .chat-app-thread-head,
    .chat-app-composer,
    .chat-app-participants,
    .chat-app-messages {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .chat-app-flash {
        margin-left: 1rem;
        margin-right: 1rem;
    }
}

@media (max-width: 560px) {
    .chat-app-topbar {
        padding: 1rem;
    }

    .chat-app-topbar-actions {
        width: 100%;
        justify-content: flex-start;
    }

    .chat-app-message-row {
        max-width: 100%;
    }

    .chat-app-composer-row {
        grid-template-columns: auto minmax(0, 1fr);
    }

    .chat-app-composer-row .chat-app-send-button {
        grid-column: 1 / -1;
        width: 100%;
    }
}