/* BRAT CHATBOT BASE STYLING */

.brat-chatbot-wrapper {
    --primary-color: #8ACE00;
    --primary-gradient: var(--primary-color);
    --primary-glow: rgba(138, 206, 0, 0.20);
    
    --bg-app: #ffffff;
    --bg-sidebar: #ffffff;
    --bg-chat: #ffffff;
    --bg-input: #f3f4f6;
    --border-color: #e5e7eb;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --bubble-user-bg: var(--primary-color);
    --bubble-user-text: #000000;
    --bubble-bot-bg: #f3f4f6;
    --bubble-bot-text: #1f2937;
    --sidebar-active-bg: color-mix(in srgb, var(--primary-color) 10%, transparent);
    --sidebar-hover-bg: #f9fafb;
    --chip-bg: color-mix(in srgb, var(--primary-color) 8%, transparent);
    --chip-hover-bg: color-mix(in srgb, var(--primary-color) 15%, transparent);
    --chip-text: color-mix(in srgb, var(--primary-color) 80%, #000000);
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --card-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --scroll-thumb: #cbd5e1;
    --scroll-thumb-hover: #94a3b8;
    --code-header-bg: #e2e8f0;
    --code-bg: #f8fafc;
    --code-text: #0f172a;
    --transition-speed: 0.3s;
    
    font-family: 'Outfit', sans-serif;
    -webkit-tap-highlight-color: transparent;
    box-sizing: border-box;
}

.brat-chatbot-wrapper * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Outfit', sans-serif;
}

/* DARK MODE OVERRIDES */
.brat-chatbot-wrapper[data-theme="dark"] {
    --bg-app: #090d16;
    --bg-sidebar: #0f172a;
    --bg-chat: #0f172a;
    --bg-input: #1e293b;
    --border-color: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --bubble-user-bg: var(--primary-color);
    --bubble-user-text: #000000;
    --bubble-bot-bg: #1e293b;
    --bubble-bot-text: #f8fafc;
    --sidebar-active-bg: color-mix(in srgb, var(--primary-color) 15%, transparent);
    --sidebar-hover-bg: #1e293b80;
    --chip-bg: color-mix(in srgb, var(--primary-color) 15%, transparent);
    --chip-hover-bg: color-mix(in srgb, var(--primary-color) 25%, transparent);
    --chip-text: var(--primary-color);
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --card-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --scroll-thumb: #334155;
    --scroll-thumb-hover: #475569;
    --code-header-bg: #1e293b;
    --code-bg: #090d16;
    --code-text: #e2e8f0;
}

/* SIDEBAR LAYOUT (BASE) */
.brat-chatbot-app-container .brat-chatbot-sidebar {
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    z-index: 100;
    transition: transform var(--transition-speed) ease, background-color var(--transition-speed), border-color var(--transition-speed);
}

.brat-chatbot-sidebar-header {
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brat-chatbot-new-chat-btn {
    padding: 10px 14px;
    background: var(--primary-gradient);
    color: var(--bubble-user-text);
    border: none;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: opacity 0.2s ease, transform 0.1s ease, box-shadow 0.2s;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.brat-chatbot-new-chat-btn:hover {
    opacity: 0.95;
    box-shadow: 0 6px 16px var(--primary-glow);
}

.brat-chatbot-close-sidebar-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 8px;
}

.brat-chatbot-close-sidebar-btn:hover {
    color: var(--text-primary);
    background-color: var(--sidebar-hover-bg);
}

.brat-chatbot-sessions-container {
    flex: 1;
    overflow-y: auto;
    padding: 0 12px 15px 12px;
}

.brat-chatbot-sessions-title {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin: 10px 8px 8px 8px;
}

.brat-chatbot-session-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
    margin-bottom: 4px;
    transition: background-color 0.2s ease, color 0.2s ease;
    color: var(--text-secondary);
    position: relative;
}

.brat-chatbot-session-item:hover {
    background-color: var(--sidebar-hover-bg);
    color: var(--text-primary);
}

.brat-chatbot-session-item.active {
    background-color: var(--sidebar-active-bg);
    color: var(--text-primary);
    font-weight: 500;
}

.brat-chatbot-session-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
}

.brat-chatbot-session-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.85rem;
}

.brat-chatbot-delete-session-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    opacity: 0;
    transition: opacity 0.2s ease, color 0.2s;
}

.brat-chatbot-session-item:hover .brat-chatbot-delete-session-btn,
.brat-chatbot-session-item.active .brat-chatbot-delete-session-btn {
    opacity: 1;
}

.brat-chatbot-delete-session-btn:hover {
    color: #ef4444;
    background-color: rgba(239, 68, 68, 0.1);
}

.brat-chatbot-sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.brat-chatbot-sidebar-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bubble-user-text);
    font-weight: bold;
}

.brat-chatbot-clear-btn {
    color: var(--text-secondary);
    transition: color 0.2s, background-color 0.2s;
}

.brat-chatbot-clear-btn:hover {
    color: #ef4444;
    background-color: rgba(239, 68, 68, 0.1);
}

/* BACKDROP FOR SIDEBAR DRAWER */
.brat-chatbot-sidebar-overlay {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(1px);
    z-index: 95;
}

/* MAIN CHAT AREA LAYOUT */
.brat-chatbot-chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--bg-app);
    position: relative;
    width: 100%;
}

.brat-chatbot-chat-header {
    height: 64px;
    background-color: var(--bg-chat);
    border-bottom: 1px solid var(--border-color);
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 10;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.brat-chatbot-header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brat-chatbot-menu-toggle-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 8px;
    display: flex;
}

.brat-chatbot-menu-toggle-btn:hover {
    background-color: var(--sidebar-hover-bg);
    color: var(--text-primary);
}

.brat-chatbot-status-dot {
    width: 8px;
    height: 8px;
    background-color: #22c55e;
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 8px #22c55e;
    animation: bratChatbotPulse 2s infinite;
}

@keyframes bratChatbotPulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 5px rgba(34, 197, 94, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.brat-chatbot-action-icon-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease, color 0.2s, border-color 0.2s;
}

.brat-chatbot-action-icon-btn:hover {
    background-color: var(--bg-input);
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

/* MESSAGES CONTAINER */
.brat-chatbot-messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    scroll-behavior: smooth;
}

/* WELCOME SCREEN */
.brat-chatbot-welcome-screen {
    max-width: 100%;
    margin: auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    animation: bratChatbotFadeIn 0.4s ease-out;
    padding: 10px;
}

@keyframes bratChatbotFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.brat-chatbot-welcome-icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: 20px;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bubble-user-text);
    box-shadow: var(--card-shadow);
    animation: bratChatbotBounce 3s infinite ease-in-out;
}

@keyframes bratChatbotBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.brat-chatbot-welcome-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.brat-chatbot-welcome-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
    padding: 0 10px;
}

.brat-chatbot-prompt-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    width: 100%;
    margin-top: 10px;
}

@media (max-width: 540px) {
    .brat-chatbot-prompt-grid {
        grid-template-columns: 1fr;
    }
}

.brat-chatbot-prompt-chip {
    background-color: var(--bg-chat);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px;
    font-size: 0.85rem;
    text-align: left;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s, background-color 0.2s;
    box-shadow: var(--card-shadow);
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 100%;
}

.brat-chatbot-prompt-chip:hover {
    transform: translateY(-1px);
    border-color: var(--primary-color);
    background-color: var(--bg-input);
}

.brat-chatbot-prompt-chip-title {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--chip-text);
}

.brat-chatbot-prompt-chip-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* CHAT BUBBLES */
.brat-chatbot-message-row {
    display: flex;
    gap: 10px;
    width: 100%;
    max-width: 85%;
    animation: bratChatbotSlideMsg 0.25s ease-out forwards;
}

@keyframes bratChatbotSlideMsg {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.brat-chatbot-message-row.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.brat-chatbot-message-row.bot {
    align-self: flex-start;
}

.brat-chatbot-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: var(--card-shadow);
}

.brat-chatbot-message-row.bot .brat-chatbot-avatar {
    background-color: var(--bg-chat);
    border: 1px solid var(--border-color);
    color: var(--primary-color);
}

.brat-chatbot-message-row.user .brat-chatbot-avatar {
    background: var(--primary-gradient);
    color: var(--bubble-user-text);
}

.brat-chatbot-message-bubble-container {
    display: flex;
    flex-direction: column;
    gap: 2px;
    max-width: calc(100% - 40px);
}

.brat-chatbot-message-bubble {
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 0.88rem;
    line-height: 1.4;
    box-shadow: var(--card-shadow);
    word-break: break-word;
}

.brat-chatbot-message-row.user .brat-chatbot-message-bubble {
    background: var(--bubble-user-bg);
    color: var(--bubble-user-text);
    border-top-right-radius: 4px;
}

.brat-chatbot-message-row.bot .brat-chatbot-message-bubble {
    background-color: var(--bubble-bot-bg);
    color: var(--bubble-bot-text);
    border-top-left-radius: 4px;
    border: 1px solid var(--border-color);
}

.brat-chatbot-message-timestamp {
    font-size: 0.65rem;
    color: var(--text-secondary);
    margin: 0 4px;
}

.brat-chatbot-message-row.user .brat-chatbot-message-timestamp {
    align-self: flex-end;
}

.brat-chatbot-message-row.bot .brat-chatbot-message-timestamp {
    align-self: flex-start;
}

/* INLINE FORMATTING */
.brat-chatbot-inline-code {
    background-color: color-mix(in srgb, var(--primary-color) 10%, rgba(99, 102, 241, 0.08));
    color: var(--primary-color);
    padding: 1px 4px;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
    font-size: 0.85em;
}

.brat-chatbot-code-block-wrapper {
    margin: 10px 0;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
}

.brat-chatbot-code-block-header {
    background-color: var(--code-header-bg);
    padding: 4px 10px;
    font-size: 0.7rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.brat-chatbot-copy-code-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    font-weight: 600;
    cursor: pointer;
    padding: 1px 4px;
    border-radius: 4px;
    font-size: 0.7rem;
}

.brat-chatbot-copy-code-btn:hover {
    background-color: rgba(138, 206, 0, 0.1);
}

.brat-chatbot-code-block-wrapper pre {
    background-color: var(--code-bg);
    padding: 10px;
    overflow-x: auto;
    margin: 0;
}

.brat-chatbot-code-block-wrapper code {
    font-family: 'Fira Code', monospace;
    font-size: 0.78rem;
    color: var(--code-text);
    white-space: pre;
    display: block;
}

.brat-chatbot-chat-list {
    margin-left: 16px;
    margin-top: 6px;
    margin-bottom: 6px;
}

.brat-chatbot-chat-list li {
    margin-bottom: 3px;
    font-size: 0.88rem;
}

.brat-chatbot-chat-spacing {
    height: 8px;
}

/* TYPING INDICATOR */
.brat-chatbot-typing-bubble {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 10px 14px;
    background-color: var(--bubble-bot-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    border-top-left-radius: 4px;
    box-shadow: var(--card-shadow);
}

.brat-chatbot-typing-dot {
    width: 5px;
    height: 5px;
    background-color: var(--text-secondary);
    border-radius: 50%;
    animation: bratChatbotBounceDot 1.4s infinite ease-in-out both;
}

.brat-chatbot-typing-dot:nth-child(1) { animation-delay: -0.32s; }
.brat-chatbot-typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes bratChatbotBounceDot {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

/* INPUT FOOTER */
.brat-chatbot-input-container {
    background-color: var(--bg-chat);
    border-top: 1px solid var(--border-color);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    z-index: 10;
    transition: background-color var(--transition-speed);
}

.brat-chatbot-input-wrapper {
    display: flex;
    align-items: flex-end;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 8px 10px;
    gap: 8px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.brat-chatbot-input-wrapper:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

.brat-chatbot-textarea {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 0.88rem;
    resize: none;
    max-height: 80px;
    height: 20px;
    line-height: 1.4;
    overflow-y: auto;
    box-shadow: none !important;
}

.brat-chatbot-textarea::placeholder {
    color: var(--text-secondary);
}

.brat-chatbot-input-buttons {
    display: flex;
    align-items: center;
}

.brat-chatbot-send-btn {
    background: var(--primary-gradient);
    color: var(--bubble-user-text);
    border: none;
    border-radius: 10px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.15s ease, opacity 0.15s;
    box-shadow: var(--card-shadow);
    flex-shrink: 0;
}

.brat-chatbot-send-btn:hover {
    opacity: 0.95;
}

.brat-chatbot-send-btn:active {
    transform: scale(0.92);
}

.brat-chatbot-send-btn:disabled {
    background: var(--border-color);
    color: var(--text-secondary);
    cursor: not-allowed;
    box-shadow: none;
    opacity: 0.5;
}

/* RESPONSIVE SCROLLBAR */
.brat-chatbot-wrapper ::-webkit-scrollbar {
    width: 4px;
    height: 4px;
}

.brat-chatbot-wrapper ::-webkit-scrollbar-track {
    background: transparent;
}

.brat-chatbot-wrapper ::-webkit-scrollbar-thumb {
    background-color: var(--scroll-thumb);
    border-radius: 8px;
}

.brat-chatbot-wrapper ::-webkit-scrollbar-thumb:hover {
    background-color: var(--scroll-thumb-hover);
}