/* Canonical empty-chat composition: centered greeting, composer and quick actions. */
.chat-main-area.is-empty {
    position: relative !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: safe center !important;
    gap: 0 !important;
    height: 100% !important;
    min-height: 0 !important;
    overflow-x: hidden !important;
    overflow-y: auto !important;
    padding: 76px 24px 28px !important;
    box-sizing: border-box !important;
}

.chat-main-area.is-empty .chat-messages {
    display: contents !important;
}

.chat-main-area.is-empty .empty-chat-layout {
    display: contents !important;
    animation: none !important;
}

.chat-main-area.is-empty .chat-header {
    /* Keep the normal chat header in the same top position for empty chats. */
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    margin: 0 !important;
    transform: none !important;
    z-index: 20 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    min-height: 64px !important;
    padding: 10px 20px !important;
    background-color: var(--bg-dark) !important;
    border-bottom: none !important;
}

.chat-main-area.is-empty #chatHeader.chat-header {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    margin: 0 !important;
    transform: none !important;
}

/* Override legacy empty-state rules so the regular header stays intact. */
.chat-main-area.is-empty .chat-header .header-back-btn {
    display: flex !important;
}

.chat-main-area.is-empty .chat-header .header-mode-switch,
.chat-main-area.is-empty .chat-header #chatSearchWrapper,
.chat-main-area.is-empty .chat-header .chat-menu {
    display: flex !important;
}

.chat-main-area.is-empty .empty-chat-logo,
.chat-main-area.is-empty .empty-chat-title,
.chat-main-area.is-empty .empty-chat-subtitle {
    position: relative !important;
    z-index: 1;
}

.chat-main-area.is-empty .empty-chat-logo,
.chat-main-area.is-empty .empty-chat-title,
.chat-main-area.is-empty .empty-chat-subtitle {
    align-self: center !important;
    width: 100% !important;
    max-width: 760px !important;
    text-align: center !important;
    order: 1;
}

.chat-main-area.is-empty .empty-chat-logo {
    width: 58px !important;
    height: 58px !important;
    margin: 0 0 14px !important;
}

.chat-main-area.is-empty .empty-chat-title {
    max-width: 680px;
    margin: 0 !important;
    font-size: clamp(22px, 2.2vw, 30px) !important;
    line-height: 1.22 !important;
    letter-spacing: -0.025em !important;
    order: 2;
}

.chat-main-area.is-empty .empty-chat-subtitle {
    margin: 9px 0 0 !important;
    font-size: 14px !important;
    line-height: 1.45 !important;
    order: 3;
}

body #chatView .chat-main-area.is-empty > .input-container {
    position: relative !important;
    inset: auto !important;
    align-self: center !important;
    order: 4 !important;
    width: min(100%, 820px) !important;
    max-width: 820px !important;
    margin: 24px 0 0 !important;
    padding: 0 !important;
    box-sizing: border-box !important;
    z-index: 10 !important;
    flex: 0 0 auto !important;
}

.chat-main-area.is-empty .input-container {
    position: relative !important;
    inset: auto !important;
    order: 4 !important;
    width: min(100%, 820px) !important;
    max-width: 820px !important;
    margin: 24px 0 0 !important;
    padding: 0 !important;
    box-sizing: border-box !important;
    z-index: 10 !important;
    flex: 0 0 auto !important;
}

.chat-main-area.is-empty .input-wrapper {
    width: 100% !important;
    max-width: 800px !important;
    margin-inline: auto !important;
}

.chat-main-area.is-empty .disclaimer {
    position: relative !important;
    inset: auto !important;
    width: min(100%, 760px) !important;
    margin: 12px auto 0 !important;
    text-align: center !important;
    order: 6;
}

.chat-main-area.is-empty .empty-chat-shortcuts {
    order: 5;
    align-self: center;
    width: min(100%, 800px);
    margin: 12px auto 0;
    flex: 0 0 auto;
}

.empty-chat-shortcuts-heading {
    margin: 0 0 7px;
    color: var(--text-secondary, #aaa69d);
    font-size: 11px;
    font-weight: 600;
    line-height: 1.35;
    letter-spacing: .015em;
    text-align: center;
}

.empty-chat-shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 7px;
}

.empty-chat-shortcut {
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    width: 100%;
    min-width: 0;
    min-height: 42px;
    padding: 7px 11px;
    border: 1px solid color-mix(in srgb, var(--border-color, #514f4b) 76%, transparent);
    border-radius: 11px;
    color: var(--text-primary, #e8e7e4);
    background: color-mix(in srgb, var(--bg-secondary, #252423) 90%, var(--text-primary, #e8e7e4) 2%);
    font: inherit;
    text-align: center;
    cursor: pointer;
    transition: border-color 150ms ease, background-color 150ms ease;
}

.empty-chat-shortcut:hover {
    border-color: color-mix(in srgb, var(--text-secondary, #aaa69d) 48%, var(--border-color, #514f4b));
    background: color-mix(in srgb, var(--bg-secondary, #252423) 72%, var(--text-primary, #e8e7e4) 7%);
}

.empty-chat-shortcut:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--accent-color, #eabf69) 78%, white 8%);
    outline-offset: 2px;
}

.empty-chat-shortcut-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 18px;
    width: 18px;
    height: 18px;
    color: var(--text-secondary, #b8b4ac);
}

.empty-chat-shortcut-icon svg {
    display: block;
    width: 18px;
    height: 18px;
    stroke: currentColor;
    stroke-width: 1.7;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.empty-chat-shortcut:hover .empty-chat-shortcut-icon {
    color: var(--text-primary, #e8e7e4);
}

.empty-chat-shortcut-copy {
    display: block;
    min-width: 0;
}

.empty-chat-shortcut-title,
.empty-chat-shortcut-description {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.empty-chat-shortcut-title {
    font-size: 12px;
    font-weight: 550;
    line-height: 1.3;
}

.empty-chat-shortcut-description {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@keyframes emptyChatEnter {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    .chat-main-area.is-empty {
        justify-content: flex-start !important;
        overflow: hidden !important;
        padding: 72px 14px 22px !important;
    }

    .chat-main-area.is-empty .empty-chat-logo {
        width: 64px !important;
        height: 64px !important;
        margin: auto 0 14px !important;
    }

    .chat-main-area.is-empty .empty-chat-subtitle {
        margin: 9px 0 auto !important;
    }

    .chat-main-area.is-empty .input-container {
        width: 100% !important;
        max-width: none !important;
    }

    .chat-main-area.is-empty .empty-chat-shortcuts {
        display: none !important;
    }

    body #chatView .chat-main-area.is-empty > .input-container {
        position: fixed !important;
        inset: auto 0 calc(var(--keyboard-offset, 0px) + var(--mobile-safe-bottom, env(safe-area-inset-bottom, 0px)) + 8px) !important;
        width: 100% !important;
        max-width: none !important;
        margin: 0 !important;
        padding: 0 14px !important;
        z-index: 4600 !important;
    }
}

@media (max-width: 1080px) and (min-width: 769px) {
    .empty-chat-shortcuts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
    .chat-main-area.is-empty .empty-chat-layout,
    .empty-chat-shortcut { animation: none !important; transition: none !important; }
}