.chatbox-container {
    position: fixed;
    right: max(12px, env(safe-area-inset-right, 0px));
    bottom: max(12px, env(safe-area-inset-bottom, 0px));
    z-index: 1200;
}

.chatbox-icon {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
}

.chatbox-launch-btn {
    position: relative;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    border: 1px solid color-mix(in srgb, var(--text-primary, #111) 12%, transparent);
    background:
        radial-gradient(circle at 28% 22%, rgba(255, 255, 255, 0.28), transparent 48%),
        linear-gradient(135deg, #5865f2, #00a8fc);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.24);
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
    overflow: hidden;
    padding: 0;
}

[data-theme="light"] .chatbox-launch-btn {
    box-shadow: 0 10px 22px rgba(29, 78, 216, 0.2);
}

.chatbox-launch-btn:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.28);
    filter: saturate(1.08);
}

.chatbox-launch-btn:focus-visible {
    outline: 3px solid color-mix(in srgb, #5865f2 36%, transparent);
    outline-offset: 2px;
}

.chatbox-launch-icon {
    font-size: 1.45rem;
    opacity: 0.98;
    filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.2));
}

.chatbox-icon.hide {
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
}

.chatbox-modal {
    --chat-surface: color-mix(in srgb, var(--card-bg, #ffffff) 96%, transparent);
    --chat-surface-2: color-mix(in srgb, var(--bg-secondary, #f3f3f3) 92%, transparent);
    --chat-border: color-mix(in srgb, var(--text-primary, #111) 10%, transparent);
    --chat-text: var(--text-primary, #222);
    --chat-muted: var(--text-secondary, #666);
    --chat-accent: #5865f2;
    --chat-accent-2: #4752c4;
    --chat-bot-bubble: color-mix(in srgb, var(--bg-secondary, #f3f3f3) 82%, var(--card-bg, #fff) 18%);
    --chat-user-bubble: color-mix(in srgb, var(--chat-accent) 14%, var(--card-bg, #fff) 86%);

    display: none;
    position: fixed;
    right: max(12px, env(safe-area-inset-right, 0px));
    bottom: calc(max(64px, env(safe-area-inset-bottom, 0px)) + 8px);
    width: min(380px, calc(100vw - 20px));
    height: min(620px, calc(var(--chat-viewport-height, 100dvh) - 92px));
    max-height: calc(var(--chat-viewport-height, 100dvh) - 92px);
    border-radius: 16px;
    border: 1px solid var(--chat-border);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01)),
        var(--chat-surface);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(10px);
    overflow: hidden;
    flex-direction: column;
}

[data-theme="dark"] .chatbox-modal {
    --chat-surface: color-mix(in srgb, var(--card-bg, #1e1e1e) 96%, #101217 4%);
    --chat-surface-2: #1b1d24;
    --chat-border: rgba(255, 255, 255, 0.08);
    --chat-text: #f2f3f5;
    --chat-muted: #a7acb5;
    --chat-bot-bubble: #23262f;
    --chat-user-bubble: rgba(88, 101, 242, 0.18);
}

.chatbox-modal .dots-loader {
    min-height: 100%;
}

.chatbox-header {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 14px;
    background:
        linear-gradient(180deg, rgba(88, 101, 242, 0.22), rgba(88, 101, 242, 0.08)),
        color-mix(in srgb, var(--chat-surface-2) 96%, transparent);
    border-bottom: 1px solid var(--chat-border);
    position: sticky;
    top: 0;
    z-index: 2;
}

.chatbox-header-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.chatbox-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, #5865f2, #00a8fc);
    box-shadow: 0 6px 14px rgba(88, 101, 242, 0.28);
    flex-shrink: 0;
}

.chatbox-header-text {
    min-width: 0;
    display: grid;
}

.chatbox-title {
    color: var(--chat-text);
    font-size: 0.98rem;
    font-weight: 700;
    line-height: 1.2;
}

.chatbox-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--chat-muted);
    font-size: 0.72rem;
    font-weight: 500;
    margin-top: 2px;
}

.chatbox-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #3ba55d;
    box-shadow: 0 0 0 2px rgba(59, 165, 93, 0.18);
}

.chatbox-close {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: 10px;
    background: transparent;
    color: var(--chat-muted);
    font-size: 1.3rem;
    line-height: 1;
    cursor: pointer;
    transition: background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
    flex-shrink: 0;
}

.chatbox-close:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--chat-text);
    border-color: var(--chat-border);
}

.chatbox-body {
    display: none;
    flex: 1;
    min-height: 0;
    padding: 12px;
    gap: 10px;
    font-size: 14px;
    flex-direction: column;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.01), transparent 35%),
        transparent;
    overflow: hidden;
}

.chatbox-help-card {
    border: 1px solid var(--chat-border);
    border-radius: 12px;
    padding: 10px 12px;
    background: color-mix(in srgb, var(--chat-surface-2) 86%, transparent);
}

.chatbox-help {
    margin: 0;
    color: var(--chat-muted);
    line-height: 1.45;
    font-size: 0.83rem;
}

.chat-messages {
    flex: 1;
    min-height: 0;
    overflow: auto;
    padding-right: 4px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 0;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: color-mix(in srgb, var(--chat-muted) 35%, transparent) transparent;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
}

.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--chat-muted) 35%, transparent);
    border-radius: 999px;
}

.chat-message-row {
    display: grid;
    gap: 4px;
    align-content: start;
}

.chat-message-row.is-user {
    justify-items: end;
}

.chat-message-row.is-bot {
    justify-items: start;
}

.chat-message-meta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.68rem;
    color: var(--chat-muted);
    padding: 0 2px;
    max-width: 92%;
}

.chat-message-meta__name {
    font-weight: 700;
    color: color-mix(in srgb, var(--chat-text) 88%, transparent);
}

.chat-message-meta__dot {
    opacity: 0.55;
}

.chat-message-meta__time {
    opacity: 0.9;
}

.chat-message {
    border-radius: 12px;
    padding: 10px 12px;
    margin: 0;
    line-height: 1.45;
    word-wrap: break-word;
    border: 1px solid transparent;
    max-width: 92%;
}

.chat-message-header {
    background: var(--chat-user-bubble);
    color: var(--chat-text) !important;
    border-color: color-mix(in srgb, var(--chat-accent) 20%, transparent);
    font-weight: 600;
}

.chat-message-answer {
    background: var(--chat-bot-bubble);
    color: var(--chat-text) !important;
    border-color: var(--chat-border);
}

[data-theme="dark"] .chat-message-answer {
    color: #eef0f4 !important;
}

.chat-typing-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-height: 16px;
}

.chat-typing-indicator__dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--chat-muted) 88%, white);
    opacity: 0.55;
    animation: chatTypingPulse 1.1s infinite ease-in-out;
}

.chat-typing-indicator__dot:nth-child(2) {
    animation-delay: 0.16s;
}

.chat-typing-indicator__dot:nth-child(3) {
    animation-delay: 0.32s;
}

@keyframes chatTypingPulse {
    0%, 80%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    40% {
        transform: translateY(-2px);
        opacity: 1;
    }
}

.chat-options-panel {
    border: 1px solid var(--chat-border);
    border-radius: 12px;
    background: color-mix(in srgb, var(--chat-surface-2) 88%, transparent);
    padding: 8px;
    display: grid;
    gap: 8px;
    min-height: 0;
}

.chat-options-toggle {
    width: 100%;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--chat-border);
    border-radius: 10px;
    padding: 8px 10px;
    background: rgba(255, 255, 255, 0.02);
    color: var(--chat-text);
    cursor: pointer;
    text-align: left;
    transition: border-color 0.16s ease, background-color 0.16s ease;
}

.chat-options-toggle:hover {
    border-color: color-mix(in srgb, var(--chat-accent) 22%, transparent);
    background: rgba(255, 255, 255, 0.04);
}

.chat-options-toggle__label {
    min-width: 0;
    font-size: 0.8rem;
    font-weight: 700;
}

.chat-options-toggle__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.8em;
    height: 1.8em;
    border-radius: 999px;
    padding: 0 6px;
    font-size: 0.7rem;
    color: var(--chat-muted);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--chat-border);
}

.chat-options-toggle__icon {
    font-size: 0.95rem;
    color: var(--chat-muted);
    transition: transform 0.18s ease;
}

.chat-options-panel.is-collapsed .chat-options-toggle__icon {
    transform: rotate(-90deg);
}

.chat-options {
    justify-content: center;
}

.chat-options.grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    padding-top: 0;
    min-height: 0;
}

.chat-options-panel.is-collapsed .chat-options.grid {
    display: none;
}

.chat-options button {
    background:
        linear-gradient(180deg, rgba(88, 101, 242, 0.18), rgba(88, 101, 242, 0.1)),
        color-mix(in srgb, var(--chat-surface-2) 88%, transparent);
    color: var(--chat-text);
    border: 1px solid color-mix(in srgb, var(--chat-accent) 18%, transparent);
    padding: 10px 10px;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
    text-align: left;
    font-size: 0.8rem;
    line-height: 1.25;
    min-height: 48px;
    font-weight: 600;
}

.chat-options button:hover {
    background:
        linear-gradient(180deg, rgba(88, 101, 242, 0.28), rgba(88, 101, 242, 0.14)),
        color-mix(in srgb, var(--chat-surface-2) 84%, transparent);
    border-color: color-mix(in srgb, var(--chat-accent) 30%, transparent);
    transform: translateY(-1px);
}

.chatbox-footer {
    padding: 10px 12px 12px;
    border-top: 1px solid var(--chat-border);
    background: color-mix(in srgb, var(--chat-surface-2) 92%, transparent);
    display: grid;
    gap: 8px;
}

.chatbox-composer {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    align-items: center;
    padding: 6px;
    border-radius: 12px;
    border: 1px solid var(--chat-border);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01)),
        color-mix(in srgb, var(--chat-surface) 92%, transparent);
    min-width: 0;
    width: 100%;
    box-sizing: border-box;
}

.chatbox-input {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    border: 0;
    outline: none;
    background: transparent;
    color: var(--chat-text);
    font-size: 0.88rem;
    padding: 8px 8px 8px 10px;
    border-radius: 8px;
    box-sizing: border-box;
}

.chatbox-input::placeholder {
    color: var(--chat-muted);
}

.chatbox-send {
    border: 1px solid color-mix(in srgb, var(--chat-accent) 22%, transparent);
    background:
        linear-gradient(180deg, rgba(88, 101, 242, 0.26), rgba(88, 101, 242, 0.14)),
        color-mix(in srgb, var(--chat-surface-2) 90%, transparent);
    color: var(--chat-text);
    min-height: 38px;
    padding: 8px 12px;
    border-radius: 10px;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
}

.chatbox-send ion-icon {
    font-size: 0.95rem;
    flex-shrink: 0;
}

.chatbox-send span {
    line-height: 1;
}

.chatbox-send:hover {
    transform: translateY(-1px);
    border-color: color-mix(in srgb, var(--chat-accent) 34%, transparent);
    background:
        linear-gradient(180deg, rgba(88, 101, 242, 0.34), rgba(88, 101, 242, 0.18)),
        color-mix(in srgb, var(--chat-surface-2) 86%, transparent);
}

.chatbox-send:focus-visible,
.chatbox-input:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--chat-accent) 35%, transparent);
    outline-offset: 2px;
}

#clearChat {
    background: transparent;
    color: var(--chat-muted);
    border: 1px solid var(--chat-border);
    padding: 9px 12px;
    border-radius: 10px;
    font-size: 0.84rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
    width: 100%;
}

#clearChat:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--chat-text);
    border-color: color-mix(in srgb, var(--chat-accent) 18%, transparent);
}

.chatbox-modal input[type="text"]:not(.chatbox-input) {
    width: calc(100% - 80px);
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

@media (max-width: 480px) {
    .chatbox-container {
        right: max(8px, env(safe-area-inset-right, 0px));
        bottom: max(8px, env(safe-area-inset-bottom, 0px));
    }

    .chatbox-modal {
        right: max(8px, env(safe-area-inset-right, 0px));
        bottom: calc(max(58px, env(safe-area-inset-bottom, 0px)) + 6px);
        width: calc(100vw - 12px - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px));
        max-width: 100%;
        height: min(560px, calc(var(--chat-viewport-height, 100dvh) - 72px));
        max-height: calc(var(--chat-viewport-height, 100dvh) - 72px);
        border-radius: 14px;
    }

    .chatbox-launch-btn {
        width: 50px;
        height: 50px;
    }

    .chatbox-header {
        padding: 10px 12px;
    }

    .chatbox-body {
        padding: 10px;
        gap: 8px;
    }

    .chatbox-footer {
        padding: 8px 10px 10px;
    }

    .chatbox-help-card {
        padding: 9px 10px;
    }

    .chat-options.grid {
        grid-template-columns: 1fr;
        max-height: min(180px, 28vh);
        overflow-y: auto;
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
        touch-action: pan-y;
        padding-right: 4px;
    }

    .chatbox-composer {
        grid-template-columns: 1fr;
        width: 100%;
        min-width: 0;
        padding: 5px;
    }

    .chatbox-send {
        width: 100%;
    }

    .chatbox-input {
        width: 100%;
        max-width: 100%;
        min-width: 0;
        padding: 8px 8px;
        font-size: 16px; /* prevent iOS zoom and keep width stable */
    }

    .chat-options button {
        min-height: 44px;
        font-size: 0.78rem;
        padding: 9px 9px;
    }

    .chat-message {
        max-width: 96%;
        padding: 9px 10px;
    }
}

@media (max-width: 768px) {
    .chatbox-modal {
        width: min(420px, calc(100vw - 16px - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px)));
        height: min(620px, calc(var(--chat-viewport-height, 100dvh) - 78px));
        max-height: calc(var(--chat-viewport-height, 100dvh) - 78px);
    }

    .chatbox-send {
        min-height: 40px;
    }

    .chat-options.grid {
        max-height: min(220px, 30vh);
        overflow-y: auto;
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
        touch-action: pan-y;
        padding-right: 4px;
    }
}

@media (max-height: 580px) {
    .chatbox-modal {
        height: min(500px, calc(var(--chat-viewport-height, 100dvh) - 72px));
        max-height: calc(var(--chat-viewport-height, 100dvh) - 72px);
    }
}

@media (max-height: 520px) {
    .chatbox-modal {
        height: min(440px, calc(var(--chat-viewport-height, 100dvh) - 16px));
        max-height: calc(var(--chat-viewport-height, 100dvh) - 16px);
        bottom: max(6px, env(safe-area-inset-bottom, 0px));
    }
}

@media (max-height: 410px) {
    .chatbox-modal {
        height: min(360px, calc(var(--chat-viewport-height, 100dvh) - 12px));
        max-height: calc(var(--chat-viewport-height, 100dvh) - 12px);
    }
}

@media (prefers-reduced-motion: reduce) {
    .chatbox-icon,
    .chatbox-launch-btn,
    .chatbox-close,
    .chat-options button,
    .chatbox-send,
    #clearChat {
        transition: none;
    }

    .chat-options button:hover,
    .chatbox-send:hover {
        transform: none;
    }
}