/* MV Booking Assistant — glass sidebar (ChatGPT-style) */

#mv-booking-chat {
    --chat-accent: #e68404;
    --chat-accent-dark: #c97203;
    --chat-accent-soft: rgba(230, 132, 4, 0.2);
    --chat-ink: #192a30;
    --chat-muted: #64748b;
    --chat-glass: rgba(255, 255, 255, 0.72);
    --chat-glass-strong: rgba(255, 255, 255, 0.88);
    --chat-border: rgba(255, 255, 255, 0.45);
    --chat-shadow: 0 24px 80px rgba(25, 42, 48, 0.22);
    --chat-sidebar-width: min(420px, 100%);
    font-family: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    position: fixed;
    inset: 0;
    z-index: 99999;
    pointer-events: none;
    isolation: isolate;
    overflow: hidden;
    max-width: 100%;
    width: 100%;
}

#mv-booking-chat * {
    box-sizing: border-box;
}

/* Backdrop — Apple-style frosted overlay */
#mv-booking-chat .chat-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(25, 42, 48, 0.28);
    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
    pointer-events: none;
}

#mv-booking-chat.is-open {
    pointer-events: auto;
}

#mv-booking-chat.is-open .chat-backdrop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Right sidebar */
#mv-booking-chat .chat-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--chat-sidebar-width);
    height: 100dvh;
    max-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--chat-glass);
    backdrop-filter: blur(28px) saturate(180%);
    -webkit-backdrop-filter: blur(28px) saturate(180%);
    border-left: 1px solid var(--chat-border);
    box-shadow: var(--chat-shadow);
    transform: translateX(105%);
    transition: transform 0.38s cubic-bezier(0.22, 1, 0.36, 1);
    pointer-events: auto;
    overflow: hidden;
}

#mv-booking-chat.is-open .chat-sidebar {
    transform: translateX(0);
}

/* Header */
#mv-booking-chat .chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 1rem 1.1rem;
    background: var(--chat-glass-strong);
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    flex-shrink: 0;
}

#mv-booking-chat .chat-header-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
}

#mv-booking-chat .chat-avatar {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--chat-ink) 0%, var(--chat-accent) 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    box-shadow: 0 8px 20px rgba(230, 132, 4, 0.28);
}

#mv-booking-chat .chat-header h3 {
    margin: 0;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--chat-ink);
    line-height: 1.2;
}

#mv-booking-chat .chat-header p {
    margin: 0.15rem 0 0;
    font-size: 0.75rem;
    color: var(--chat-muted);
}

#mv-booking-chat .chat-close {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: rgba(15, 23, 42, 0.06);
    color: var(--chat-ink);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease, transform 0.2s ease;
    flex-shrink: 0;
}

#mv-booking-chat .chat-close:hover {
    background: rgba(15, 23, 42, 0.1);
    transform: scale(1.05);
}

/* Messages area */
#mv-booking-chat .chat-body {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#mv-booking-chat .chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 1.1rem 0.35rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    scroll-behavior: smooth;
    scroll-padding-top: 0.5rem;
}

#mv-booking-chat .chat-message {
    max-width: 88%;
    padding: 0.8rem 1rem;
    border-radius: 1.15rem;
    font-size: 0.92rem;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
    animation: chatFadeIn 0.28s ease;
}

@keyframes chatFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

#mv-booking-chat .chat-message.user {
    align-self: flex-end;
    background: linear-gradient(135deg, var(--chat-accent-dark), var(--chat-accent));
    color: #fff;
    border-bottom-right-radius: 0.35rem;
    box-shadow: 0 8px 24px rgba(230, 132, 4, 0.28);
}

#mv-booking-chat .chat-message.assistant {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.92);
    color: var(--chat-ink);
    border: 1px solid rgba(25, 42, 48, 0.07);
    border-bottom-left-radius: 0.35rem;
    box-shadow: 0 4px 16px rgba(25, 42, 48, 0.05);
}

/* Typing indicator */
#mv-booking-chat .chat-typing {
    display: none;
    align-items: center;
    gap: 0.5rem;
    padding: 0 1.1rem 0.5rem;
    font-size: 0.75rem;
    color: var(--chat-muted);
}

#mv-booking-chat.is-loading .chat-typing {
    display: flex;
}

#mv-booking-chat .chat-typing-dots {
    display: inline-flex;
    gap: 3px;
}

#mv-booking-chat .chat-typing-dots span {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--chat-accent);
    animation: chatBounce 1.2s infinite ease-in-out;
}

#mv-booking-chat .chat-typing-dots span:nth-child(2) { animation-delay: 0.15s; }
#mv-booking-chat .chat-typing-dots span:nth-child(3) { animation-delay: 0.3s; }

@keyframes chatBounce {
    0%, 80%, 100% { transform: translateY(0); opacity: 0.45; }
    40% { transform: translateY(-4px); opacity: 1; }
}

/* Chips & actions */
#mv-booking-chat .chat-options,
#mv-booking-chat .chat-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.85rem 1.1rem 0.65rem;
    flex-shrink: 0;
    border-top: 1px solid rgba(25, 42, 48, 0.07);
    background: rgba(255, 255, 255, 0.35);
}

#mv-booking-chat .chat-chip {
    border: 1px solid rgba(15, 23, 42, 0.1);
    background: rgba(255, 255, 255, 0.85);
    color: var(--chat-ink);
    border-radius: 999px;
    padding: 0.45rem 0.85rem;
    font-size: 0.78rem;
    cursor: pointer;
    transition: all 0.18s ease;
    text-align: left;
    backdrop-filter: blur(8px);
}

#mv-booking-chat .chat-chip:hover {
    border-color: var(--chat-accent);
    background: #fff;
    box-shadow: 0 4px 14px var(--chat-accent-soft);
    transform: translateY(-1px);
}

#mv-booking-chat .chat-chip small {
    display: block;
    color: var(--chat-muted);
    margin-top: 0.12rem;
    font-size: 0.7rem;
}

#mv-booking-chat .chat-action-btn {
    border: none;
    background: var(--chat-accent);
    color: #fff;
    border-radius: 999px;
    padding: 0.55rem 1rem;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

#mv-booking-chat .chat-action-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px var(--chat-accent-soft);
}

#mv-booking-chat .chat-action-btn.secondary {
    background: rgba(15, 23, 42, 0.07);
    color: var(--chat-ink);
}

/* Composer */
#mv-booking-chat .chat-composer {
    padding: 0.85rem 1rem 1rem;
    background: var(--chat-glass-strong);
    border-top: 1px solid rgba(15, 23, 42, 0.06);
    flex-shrink: 0;
}

#mv-booking-chat .chat-input-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.35rem 0.35rem 1rem;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 999px;
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.04);
}

#mv-booking-chat .chat-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0.55rem 0;
    font-size: 0.92rem;
    color: var(--chat-ink);
    outline: none;
    min-width: 0;
}

#mv-booking-chat .chat-input::placeholder {
    color: #94a3b8;
}

#mv-booking-chat .chat-send {
    width: 38px;
    height: 38px;
    border: none;
    border-radius: 50%;
    background: var(--chat-accent);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    line-height: 1;
    transition: background 0.2s ease, transform 0.2s ease;
    flex-shrink: 0;
}

#mv-booking-chat .chat-send:hover:not(:disabled) {
    background: var(--chat-accent-dark);
    transform: scale(1.05);
}

#mv-booking-chat .chat-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#mv-booking-chat .chat-footer {
    margin: 0.55rem 0 0;
    font-size: 0.68rem;
    color: var(--chat-muted);
    text-align: center;
}

/* Floating action button */
#mv-booking-chat .chat-fab {
    position: fixed;
    right: 1.35rem;
    bottom: 1.35rem;
    z-index: 100001;
    display: flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.85rem 1.1rem 0.85rem 0.95rem;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 999px;
    background: rgba(25, 42, 48, 0.82);
    backdrop-filter: blur(16px) saturate(160%);
    -webkit-backdrop-filter: blur(16px) saturate(160%);
    color: #fff;
    cursor: pointer;
    box-shadow: 0 14px 40px rgba(25, 42, 48, 0.35);
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, opacity 0.25s ease, visibility 0.25s ease;
    pointer-events: auto;
    font-size: 1.15rem;
}

#mv-booking-chat .chat-fab:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 18px 48px rgba(25, 42, 48, 0.4);
    background: rgba(25, 42, 48, 0.92);
}

#mv-booking-chat .chat-fab-label {
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    white-space: nowrap;
}

#mv-booking-chat.is-open .chat-fab {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: scale(0.92);
}

#mv-booking-chat:not(.is-open) .chat-sidebar {
    pointer-events: none;
}

#mv-booking-chat:not(.is-open) .chat-backdrop {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

/* Body scroll lock when chat open — prevent horizontal bleed on all screens */
body.chat-sidebar-open {
    overflow: hidden !important;
    overflow-x: hidden !important;
    max-width: 100%;
    overscroll-behavior: none;
}

@media (min-width: 769px) {
    body.chat-sidebar-open {
        overflow: hidden;
    }
}

@media (max-width: 768px) {
    body.chat-sidebar-open {
        position: fixed;
        width: 100%;
        left: 0;
        right: 0;
    }
}

/* Tablet & mobile — compact bottom-sheet popup (not full screen) */
@media (max-width: 768px) {
    #mv-booking-chat:not(.is-open) .chat-sidebar {
        visibility: hidden;
        transform: translate3d(0, 110vh, 0);
    }

    #mv-booking-chat .chat-backdrop {
        background: rgba(25, 42, 48, 0.25);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
    }

    #mv-booking-chat .chat-sidebar {
        top: auto;
        bottom: 4.75rem;
        left: 0.75rem;
        right: 0.75rem;
        width: auto;
        max-width: calc(100% - 1.5rem);
        height: min(68vh, 520px);
        max-height: calc(100dvh - 5.5rem);
        border-radius: 1.25rem;
        border: 1px solid rgba(255, 255, 255, 0.35);
        box-shadow: 0 20px 60px rgba(25, 42, 48, 0.35);
        transform: translate3d(0, 110vh, 0);
        transition: transform 0.34s cubic-bezier(0.22, 1, 0.36, 1);
    }

    #mv-booking-chat.is-open .chat-sidebar {
        visibility: visible;
        transform: translate3d(0, 0, 0);
    }

    #mv-booking-chat .chat-body {
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    #mv-booking-chat .chat-messages {
        flex: 0 0 auto;
        overflow: visible;
        padding-top: 0.85rem;
        min-height: auto;
    }

    #mv-booking-chat .chat-options {
        margin-top: 0.15rem;
        padding-top: 1rem;
    }

    #mv-booking-chat .chat-message.assistant:first-child {
        margin-top: 0.15rem;
    }

    #mv-booking-chat .chat-input {
        font-size: 16px;
    }

    #mv-booking-chat .chat-fab {
        right: 1rem;
        bottom: 1rem;
        padding: 0.9rem;
        border-radius: 50%;
        width: 56px;
        height: 56px;
        justify-content: center;
    }

    #mv-booking-chat .chat-fab-label {
        display: none !important;
    }
}

@media (max-width: 480px) {
    #mv-booking-chat .chat-sidebar {
        height: min(60vh, 460px);
        bottom: 4.5rem;
    }
}