/* ========== FLOATING CHATBOT — theo theme Ngũ hành STR ========== */

#chatbot-window {
    --cb-accent: var(--fs-accent, #d97706);
    --cb-accent-fg: var(--str-accent-fg, #ffffff);
    --cb-accent-soft: var(--str-accent-soft, rgba(217, 119, 6, 0.16));
    --cb-accent-mid: var(--str-accent-mid, rgba(217, 119, 6, 0.28));
    --cb-border: var(--fs-accent-border, rgba(255, 255, 255, 0.12));
    --cb-text: var(--str-text-main, #ffffff);
    --cb-text-muted: var(--str-text-muted, #e0e0e0);
    --cb-bg: var(--str-bg-card, #101010);
    --cb-surface: var(--str-bg-surface, #0e121a);
    --cb-header-grad: linear-gradient(
        135deg,
        color-mix(in srgb, var(--cb-accent) 92%, #000) 0%,
        var(--cb-accent) 48%,
        color-mix(in srgb, var(--cb-accent) 65%, #0f172a) 100%
    );
}

/* Nút nổi bên ngoài — tròn, logo STR, halo theo màu nhấn theme */
#chatbot-button {
    --cb-fab-accent: var(--fs-accent, #38bdf8);
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 62px;
    height: 62px;
    border-radius: 50%;
    background: var(--cb-fab-accent);
    border: 2px solid color-mix(in srgb, #ffffff 45%, var(--cb-fab-accent));
    cursor: move;
    box-shadow:
        0 0 0 3px color-mix(in srgb, var(--cb-fab-accent) 35%, transparent),
        0 6px 22px color-mix(in srgb, var(--cb-fab-accent) 55%, transparent),
        0 0 28px color-mix(in srgb, var(--cb-fab-accent) 50%, transparent);
    z-index: 9998;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    overflow: hidden;
}

#chatbot-button:hover {
    transform: scale(1.08);
    box-shadow:
        0 0 0 4px color-mix(in srgb, var(--cb-fab-accent) 45%, transparent),
        0 8px 28px color-mix(in srgb, var(--cb-fab-accent) 65%, transparent),
        0 0 36px color-mix(in srgb, var(--cb-fab-accent) 58%, transparent);
}

#chatbot-button img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
}

#chatbot-button.dragging {
    cursor: grabbing;
    opacity: 0.8;
}

/* Chat Window */
#chatbot-window {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 420px;
    max-width: calc(100vw - 60px);
    height: 550px;
    max-height: calc(100vh - 140px);
    background: var(--cb-bg);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
    z-index: 9999;
    display: none;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--cb-border);
    resize: both;
    min-width: 340px;
    min-height: 420px;
}

body.str-bg-cosmic #chatbot-window {
    background: linear-gradient(
        145deg,
        color-mix(in srgb, var(--cb-accent) 12%, rgba(15, 23, 42, 0.78)) 0%,
        rgba(8, 12, 22, 0.88) 100%
    );
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

#chatbot-window.active {
    display: flex;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header */
.chatbot-header {
    padding: 16px 20px;
    background: var(--cb-header-grad);
    color: var(--cb-accent-fg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 16px 16px 0 0;
    cursor: move;
    user-select: none;
    border-bottom: 1px solid color-mix(in srgb, var(--cb-accent) 35%, transparent);
}

.chatbot-header.dragging {
    cursor: grabbing;
}

.chatbot-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    pointer-events: none;
    color: var(--cb-accent-fg);
}

.chatbot-header-icon {
    width: 24px;
    height: 24px;
}

.chatbot-header-actions {
    display: flex;
    gap: 8px;
}

.chatbot-close {
    background: color-mix(in srgb, var(--cb-accent-fg) 22%, transparent);
    border: 1px solid color-mix(in srgb, var(--cb-accent-fg) 25%, transparent);
    color: var(--cb-accent-fg);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.chatbot-close:hover {
    background: color-mix(in srgb, var(--cb-accent-fg) 32%, transparent);
    transform: rotate(90deg);
}

/* Messages Container */
.chatbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: transparent;
}

.chatbot-messages::-webkit-scrollbar {
    width: 6px;
}

.chatbot-messages::-webkit-scrollbar-track {
    background: var(--cb-accent-soft);
}

.chatbot-messages::-webkit-scrollbar-thumb {
    background: var(--cb-accent-mid);
    border-radius: 3px;
}

.chatbot-messages::-webkit-scrollbar-thumb:hover {
    background: var(--cb-accent);
}

/* Message bubbles (trong cửa sổ — giữ kiểu cũ) */
.chatbot-message {
    display: flex;
    gap: 10px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chatbot-message.user {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.message-avatar.bot {
    background: var(--cb-header-grad);
    border: 1px solid var(--cb-border);
}

.message-avatar.user {
    background: color-mix(in srgb, var(--cb-accent) 75%, #334155);
    border: 1px solid var(--cb-border);
}

.message-content {
    max-width: 75%;
    padding: 10px 14px;
    border-radius: 12px;
    font-size: 13.5px;
    line-height: 1.55;
    word-wrap: break-word;
}

.chatbot-message.bot .message-content {
    max-width: 88%;
    background: var(--cb-accent-soft);
    color: var(--cb-text);
    border: 1px solid var(--cb-border);
}

.chatbot-message.bot .message-content p {
    margin: 0 0 8px 0;
}

.chatbot-message.bot .message-content p:last-child {
    margin-bottom: 0;
}

.chatbot-message.bot .message-content strong {
    color: var(--cb-accent);
    font-weight: 600;
}

.chatbot-message.bot .message-content em {
    color: color-mix(in srgb, var(--cb-accent) 70%, var(--cb-text));
    font-style: italic;
}

.chatbot-message.bot .message-content ul,
.chatbot-message.bot .message-content ol {
    margin: 6px 0 8px 18px;
    padding: 0;
}

.chatbot-message.bot .message-content li {
    margin-bottom: 4px;
    line-height: 1.45;
}

.chatbot-message.bot .message-content code {
    background: color-mix(in srgb, var(--cb-surface) 85%, #000);
    padding: 2px 5px;
    border-radius: 4px;
    font-family: 'Consolas', 'Fira Code', monospace;
    font-size: 12px;
    color: var(--cb-accent);
    border: 1px solid var(--cb-border);
}

.chatbot-message.bot .message-content pre {
    background: var(--cb-surface);
    padding: 8px 12px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 8px 0;
    border: 1px solid var(--cb-border);
}

.chatbot-message.bot .message-content pre code {
    background: none;
    padding: 0;
    border: none;
    color: var(--cb-text);
}

.chatbot-md-h3 {
    margin: 12px 0 8px;
    color: var(--cb-accent);
    font-size: 15px;
    font-weight: 700;
    border-bottom: 1px solid var(--cb-border);
    padding-bottom: 4px;
}

.chatbot-md-h4 {
    margin: 10px 0 6px;
    color: color-mix(in srgb, var(--cb-accent) 85%, var(--cb-text));
    font-size: 14px;
    font-weight: 600;
}

.chatbot-md-h5 {
    margin: 8px 0 4px;
    color: color-mix(in srgb, var(--cb-accent) 70%, var(--cb-text));
    font-size: 13.5px;
    font-weight: 600;
}

.table-container {
    width: 100%;
    overflow-x: auto;
    margin: 8px 0;
    border-radius: 6px;
    border: 1px solid var(--cb-border);
}

.chatbot-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    text-align: left;
}

.chatbot-table th {
    background: var(--cb-accent-mid);
    color: var(--cb-text);
    padding: 6px 8px;
    font-weight: 600;
    border-bottom: 1px solid var(--cb-border);
    white-space: nowrap;
}

.chatbot-table td {
    padding: 6px 8px;
    border-bottom: 1px solid color-mix(in srgb, var(--cb-border) 60%, transparent);
    color: var(--cb-text-muted);
}

.chatbot-table tr:last-child td {
    border-bottom: none;
}

.chatbot-table tr:hover td {
    background: var(--cb-accent-soft);
}

.chatbot-message.user .message-content {
    background: var(--cb-header-grad);
    color: var(--cb-accent-fg);
    border: 1px solid color-mix(in srgb, var(--cb-accent) 40%, transparent);
}

.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 10px 14px;
    background: var(--cb-accent-soft);
    border-radius: 12px;
    width: fit-content;
    border: 1px solid var(--cb-border);
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cb-accent);
    animation: typing 1.4s infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        opacity: 0.3;
        transform: translateY(0);
    }
    30% {
        opacity: 1;
        transform: translateY(-10px);
    }
}

.chatbot-input-area {
    padding: 16px 20px;
    background: var(--cb-surface);
    border-top: 1px solid var(--cb-border);
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

.chatbot-input {
    flex: 1;
    background: color-mix(in srgb, var(--cb-bg) 70%, var(--cb-accent-soft));
    border: 1px solid var(--cb-border);
    border-radius: 20px;
    padding: 10px 16px;
    color: var(--cb-text);
    font-size: 14px;
    font-family: inherit;
    resize: none;
    max-height: 100px;
    min-height: 40px;
    line-height: 20px;
    transition: all 0.2s;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.chatbot-input::-webkit-scrollbar {
    display: none !important;
    width: 0 !important;
    height: 0 !important;
}

.chatbot-input:focus {
    outline: none;
    border-color: var(--cb-accent);
    background: color-mix(in srgb, var(--cb-bg) 55%, var(--cb-accent-soft));
}

.chatbot-input::placeholder {
    color: color-mix(in srgb, var(--cb-text-muted) 75%, transparent);
}

.chatbot-send {
    background: var(--cb-header-grad);
    border: 1px solid var(--cb-border);
    color: var(--cb-accent-fg);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all 0.2s;
    flex-shrink: 0;
}

.chatbot-send:hover:not(:disabled) {
    transform: scale(1.1);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--cb-accent) 40%, transparent);
}

.chatbot-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.welcome-message {
    text-align: center;
    padding: 40px 20px;
    color: var(--cb-text-muted);
}

.welcome-message img {
    width: 80px;
    height: 80px;
    margin-bottom: 16px;
    opacity: 0.9;
}

.welcome-message h4 {
    margin: 0 0 8px 0;
    color: var(--cb-accent);
    font-size: 18px;
}

.welcome-message p {
    margin: 0;
    font-size: 14px;
    line-height: 1.5;
    color: var(--cb-text-muted);
}

.quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
    justify-content: center;
}

.quick-action {
    background: var(--cb-accent-soft);
    border: 1px solid var(--cb-border);
    color: var(--cb-text);
    padding: 8px 14px;
    border-radius: 16px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.quick-action:hover {
    background: var(--cb-accent-mid);
    border-color: var(--cb-accent);
    transform: translateY(-2px);
}

body.str-pure-white #chatbot-window {
    box-shadow: 0 10px 36px rgba(15, 23, 42, 0.12);
}

body.str-pure-white .chatbot-input-area {
    background: var(--str-bg-secondary, #f3f4f6);
}

@media (max-width: 768px) {
    #chatbot-window {
        width: calc(100vw - 40px);
        height: calc(100vh - 100px);
        left: 20px;
        right: auto;
        bottom: 80px;
    }

    #chatbot-button {
        left: 20px;
        right: auto;
        bottom: 20px;
    }
}