/**
 * Rag Sitemap Chatbot - Frontend Styles
 * Based on Mark Chatbot style.css
 */

:root {
    /* Primitive Color Tokens */
    --rsc-color-white: rgba(255, 255, 255, 1);
    --rsc-color-black: rgba(0, 0, 0, 1);
    --rsc-color-cream-50: rgba(252, 252, 249, 1);
    --rsc-color-cream-100: rgba(255, 255, 253, 1);
    --rsc-color-gray-200: rgba(245, 245, 245, 1);
    --rsc-color-gray-300: rgba(167, 169, 169, 1);
    --rsc-color-gray-400: rgba(119, 124, 124, 1);
    --rsc-color-slate-500: rgba(98, 108, 113, 1);
    --rsc-color-charcoal-700: rgba(31, 33, 33, 1);
    --rsc-color-charcoal-800: rgba(38, 40, 40, 1);
    --rsc-color-slate-900: rgba(19, 52, 59, 1);
    --rsc-color-teal-300: rgba(50, 184, 198, 1);
    --rsc-color-teal-400: rgba(45, 166, 178, 1);
    --rsc-color-teal-500: rgba(33, 128, 141, 1);
    --rsc-color-teal-600: rgba(29, 116, 128, 1);
    --rsc-color-teal-700: rgba(26, 104, 115, 1);
    --rsc-color-red-500: rgba(192, 21, 47, 1);

    /* RGB versions for opacity control */
    --rsc-color-teal-500-rgb: 33, 128, 141;
    --rsc-color-slate-900-rgb: 19, 52, 59;
    --rsc-color-brown-600-rgb: 94, 82, 64;

    /* Background color tokens */
    --rsc-color-bg-2: rgba(245, 158, 11, 0.08);
    --rsc-color-bg-3: rgba(34, 197, 94, 0.08);
    --rsc-color-bg-8: rgba(6, 182, 212, 0.08);

    /* Semantic Color Tokens (Light Mode) */
    --rsc-color-background: var(--rsc-color-cream-50);
    --rsc-color-surface: var(--rsc-color-cream-100);
    --rsc-color-text: var(--rsc-color-slate-900);
    --rsc-color-text-secondary: var(--rsc-color-slate-500);
    --rsc-color-primary: var(--rsc-color-teal-500);
    --rsc-color-primary-hover: var(--rsc-color-teal-600);
    --rsc-color-btn-primary-text: var(--rsc-color-cream-50);
    --rsc-color-border: rgba(var(--rsc-color-brown-600-rgb), 0.2);
    --rsc-color-card-border: rgba(var(--rsc-color-brown-600-rgb), 0.12);
    --rsc-color-error: var(--rsc-color-red-500);
    --rsc-color-focus-ring: rgba(var(--rsc-color-teal-500-rgb), 0.4);

    /* Typography */
    --rsc-font-family-base: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --rsc-font-size-xs: 11px;
    --rsc-font-size-sm: 12px;
    --rsc-font-size-base: 14px;
    --rsc-font-size-md: 14px;
    --rsc-font-size-lg: 16px;
    --rsc-line-height-normal: 1.5;

    /* Spacing */
    --rsc-space-4: 4px;
    --rsc-space-8: 8px;
    --rsc-space-12: 12px;
    --rsc-space-16: 16px;

    /* Border Radius */
    --rsc-radius-sm: 6px;
    --rsc-radius-lg: 12px;
    --rsc-radius-full: 9999px;

    /* Shadows */
    --rsc-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
    --rsc-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

    /* Animation */
    --rsc-duration-fast: 150ms;
    --rsc-ease-standard: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
    :root {
        --rsc-color-gray-400-rgb: 119, 124, 124;
        --rsc-color-teal-300-rgb: 50, 184, 198;

        --rsc-color-background: var(--rsc-color-charcoal-700);
        --rsc-color-surface: var(--rsc-color-charcoal-800);
        --rsc-color-text: var(--rsc-color-gray-200);
        --rsc-color-text-secondary: rgba(167, 169, 169, 0.7);
        --rsc-color-primary: var(--rsc-color-teal-300);
        --rsc-color-primary-hover: var(--rsc-color-teal-400);
        --rsc-color-btn-primary-text: var(--rsc-color-slate-900);
        --rsc-color-card-border: rgba(var(--rsc-color-gray-400-rgb), 0.2);
        --rsc-color-focus-ring: rgba(var(--rsc-color-teal-300-rgb), 0.4);
    }
}

/* Reset for chatbot elements */
.rsc-chatbot-popup,
.rsc-chatbot-popup *,
.rsc-chatbot-popup *::before,
.rsc-chatbot-popup *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Hidden utility */
.rsc-hidden {
    display: none !important;
}

/* Popup Container */
.rsc-chatbot-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--rsc-font-family-base);
    font-size: var(--rsc-font-size-base);
    line-height: var(--rsc-line-height-normal);
    color: var(--rsc-color-text);
    -webkit-font-smoothing: antialiased;
}

/* Overlay */
.rsc-chatbot-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
}

/* Chatbot Container */
.rsc-chatbot-container {
    position: relative;
    width: 90%;
    max-width: 500px;
    height: 80vh;
    max-height: 700px;
    background: var(--rsc-color-surface);
    border-radius: var(--rsc-radius-lg);
    box-shadow: var(--rsc-shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: rscSlideUp 0.3s ease-out;
    /* 防止滾輪事件冒泡到背後的頁面 */
    overscroll-behavior: contain;
}

@keyframes rscSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header */
.rsc-chatbot-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--rsc-space-12) var(--rsc-space-16);
    background: var(--rsc-color-primary);
    color: var(--rsc-color-btn-primary-text);
}

.rsc-chatbot-title {
    display: flex;
    align-items: center;
    gap: var(--rsc-space-8);
    font-weight: 600;
}



.rsc-chatbot-close {
    background: none;
    border: none;
    color: var(--rsc-close-btn-color, #ffffff);
    cursor: pointer;
    padding: var(--rsc-space-4);
    border-radius: var(--rsc-radius-sm);
    transition: color var(--rsc-duration-fast);
}

.rsc-chatbot-close:hover {
    color: var(--rsc-close-btn-color-hover, #dc3545);
}

/* Chat Area */
.rsc-chat-area-wrapper {
    position: relative;
    flex: 1;
    overflow: hidden;
}

.rsc-chat-messages {
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--rsc-space-16);
    background: var(--rsc-color-background);
    /* 防止滾輪事件冒泡到背後的頁面 */
    overscroll-behavior: contain;
    /* 確保可以接收滾輪事件 */
    touch-action: pan-y;
}

/* Scrollbar */
.rsc-chat-messages::-webkit-scrollbar {
    width: 8px;
}

.rsc-chat-messages::-webkit-scrollbar-track {
    background: var(--rsc-color-surface);
    border-radius: var(--rsc-radius-full);
}

.rsc-chat-messages::-webkit-scrollbar-thumb {
    background-color: var(--rsc-color-text-secondary);
    border-radius: var(--rsc-radius-full);
    border: 2px solid var(--rsc-color-background);
}

.rsc-chat-messages::-webkit-scrollbar-thumb:hover {
    background-color: var(--rsc-color-primary);
}

/* Messages */
.rsc-message {
    display: flex;
    margin-bottom: var(--rsc-space-16);
    animation: rscMessageSlideIn 0.3s ease-out;
}

@keyframes rscMessageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.rsc-user-message {
    justify-content: flex-end;
}

.rsc-ai-message {
    justify-content: flex-start;
}

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

.rsc-user-message .rsc-message-avatar {
    background: var(--rsc-color-primary);
    color: white;
    margin-left: var(--rsc-space-8);
    order: 2;
}

.rsc-ai-message .rsc-message-avatar {
    background: var(--rsc-color-bg-3);
    margin-right: var(--rsc-space-8);
    margin-top: var(--rsc-space-16);
}

.rsc-message-content {
    max-width: 80%;
    display: flex;
    flex-direction: column;
    margin-top: 16px;
}

.rsc-user-message .rsc-message-content {
    align-items: flex-end;
    order: 1;
}

.rsc-message-bubble {
    padding: var(--rsc-space-12) var(--rsc-space-16);
    border-radius: var(--rsc-radius-lg);
    font-size: var(--rsc-font-size-md);
    line-height: 1.4;
}

.rsc-message-bubble p:not(:last-child) {
    margin-bottom: var(--rsc-space-8);
}

/* Fix: Prevent <p> inside <li> from breaking bullet marker alignment */
.rsc-message-bubble li > p {
    display: inline;
    margin: 0;
}

.rsc-message-bubble li > p:first-child {
    display: inline;
}


.rsc-message-bubble ul,
.rsc-message-bubble ol {
    margin: var(--rsc-space-8) 0;
}

.rsc-message-bubble li {
    margin-bottom: var(--rsc-space-4);
}

.rsc-user-message .rsc-message-bubble {
    background: var(--rsc-color-primary);
    color: var(--rsc-color-btn-primary-text);
    border-bottom-right-radius: var(--rsc-radius-sm);
}

.rsc-ai-message .rsc-message-bubble {
    background: var(--rsc-color-surface);
    color: var(--rsc-color-text);
    border: 1px solid var(--rsc-color-card-border);
    border-bottom-left-radius: var(--rsc-radius-sm);
    box-shadow: var(--rsc-shadow-sm);
}

.rsc-ai-message .rsc-message-bubble img {
    max-width: 100%;
    border-radius: var(--rsc-radius-sm);
    margin-top: var(--rsc-space-8);
}

/* Link color is now controlled via admin settings */

.rsc-message-time {
    font-size: var(--rsc-font-size-xs);
    color: var(--rsc-color-text-secondary);
    margin-top: var(--rsc-space-4);
    padding: 0 var(--rsc-space-4);
}

/* Typing Indicator */
.rsc-typing-indicator {
    padding-left: var(--rsc-space-16);
    background: var(--rsc-color-background);
}

.rsc-typing {
    background: var(--rsc-color-surface) !important;
    border: 1px solid var(--rsc-color-card-border) !important;
    padding: var(--rsc-space-16) !important;
    width: fit-content !important;
}

.rsc-typing-dots {
    display: flex;
    gap: var(--rsc-space-4);
}

.rsc-typing-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--rsc-color-text-secondary);
    animation: rscTypingDot 1.4s infinite ease-in-out;
}

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

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

@keyframes rscTypingDot {

    0%,
    60%,
    100% {
        transform: translateY(0);
        opacity: 0.4;
    }

    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

/* Input Container */
.rsc-chat-input-container {
    padding: var(--rsc-space-16);
    background: var(--rsc-color-surface);
    border-top: 1px solid var(--rsc-color-card-border);
}

/* Suggested Questions */
.rsc-suggested-questions {
    display: flex;
    gap: var(--rsc-space-8);
    margin-bottom: var(--rsc-space-12);
    overflow-x: auto;
    padding-bottom: var(--rsc-space-4);
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.rsc-suggested-questions::-webkit-scrollbar {
    display: none;
}

.rsc-suggestion-btn {
    background: var(--rsc-color-bg-2);
    border: 1px solid var(--rsc-color-border);
    color: var(--rsc-color-text);
    padding: var(--rsc-space-8) var(--rsc-space-12);
    border-radius: var(--rsc-radius-full);
    font-size: var(--rsc-font-size-sm);
    white-space: nowrap;
    cursor: pointer;
    transition: all var(--rsc-duration-fast) var(--rsc-ease-standard);
}

.rsc-suggestion-btn:hover {
    background: var(--rsc-color-primary);
    color: var(--rsc-color-btn-primary-text);
    border-color: var(--rsc-color-primary);
}

/* Quick Replies */
.rsc-quick-replies {
    display: flex;
    flex-wrap: wrap;
    gap: var(--rsc-space-8);
    padding-left: 40px;
    margin-bottom: var(--rsc-space-16);
    animation: rscMessageSlideIn 0.3s ease-out;
}

.rsc-quick-reply-button {
    background: var(--rsc-color-bg-8);
    border: 1px solid var(--rsc-color-border);
    color: var(--rsc-color-text);
    padding: var(--rsc-space-8) var(--rsc-space-12);
    border-radius: var(--rsc-radius-full);
    font-size: var(--rsc-font-size-sm);
    white-space: nowrap;
    cursor: pointer;
    transition: all var(--rsc-duration-fast) var(--rsc-ease-standard);
}

.rsc-quick-reply-button:hover {
    background: var(--rsc-color-primary);
    color: var(--rsc-color-btn-primary-text);
    border-color: var(--rsc-color-primary);
}

/* Input Wrapper */
.rsc-input-wrapper {
    display: flex;
    gap: var(--rsc-space-8);
    align-items: center;
}

.rsc-input-with-icon-container {
    position: relative;
    flex: 1;
    display: flex;
}

/* Message Input - High specificity to override WP themes */
.rsc-chatbot-popup .rsc-input-wrapper input#rscMessageInput,
.rsc-chatbot-popup .rsc-input-wrapper input#rscMessageInput[type="text"] {
    /* Reset properties commonly overridden by WP themes */
    position: relative !important;
    display: inline-block !important;
    width: auto !important;
    vertical-align: middle !important;
    margin: 0 !important;
    cursor: text !important;
    box-sizing: border-box !important;

    /* Plugin-specific styles */
    flex: 1;
    padding: var(--rsc-space-12) var(--rsc-space-16) !important;
    padding-left: 52px !important;
    border: 1px solid var(--rsc-color-border) !important;
    border-radius: var(--rsc-radius-full) !important;
    font-family: var(--rsc-font-family-base) !important;
    font-size: var(--rsc-font-size-md) !important;
    font-weight: normal !important;
    line-height: var(--rsc-line-height-normal) !important;
    background-color: var(--rsc-color-background) !important;
    color: var(--rsc-color-text) !important;
    outline: none !important;
    transition: border-color var(--rsc-duration-fast) var(--rsc-ease-standard), box-shadow var(--rsc-duration-fast) var(--rsc-ease-standard) !important;
}

/* When attach button is disabled, adjust input padding */
.rsc-chatbot-popup .rsc-input-with-icon-container:not(:has(.rsc-attach-btn)) input#rscMessageInput,
.rsc-chatbot-popup .rsc-input-with-icon-container:not(:has(.rsc-attach-btn)) input#rscMessageInput[type="text"] {
    padding-left: var(--rsc-space-16) !important;
}

.rsc-chatbot-popup .rsc-input-wrapper input#rscMessageInput:focus,
.rsc-chatbot-popup .rsc-input-wrapper input#rscMessageInput[type="text"]:focus {
    border-color: var(--rsc-color-primary) !important;
    box-shadow: 0 0 0 3px var(--rsc-color-focus-ring) !important;
}

/* Send Button - Uses CSS variables for customization */
.rsc-chatbot-popup .rsc-send-btn {
    background-color: var(--rsc-send-btn-bg, #32b8c6);
    color: var(--rsc-send-btn-color, #13343b);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--rsc-duration-fast) var(--rsc-ease-standard);
}

.rsc-chatbot-popup .rsc-send-btn:hover {
    background-color: var(--rsc-send-btn-bg-hover, var(--rsc-color-primary-hover));
    color: var(--rsc-send-btn-color-hover, #13343b);
    transform: scale(1.05);
}

.rsc-chatbot-popup .rsc-send-btn:active {
    transform: scale(0.95);
}

.rsc-chatbot-popup .rsc-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Attach Button - Independent styles with CSS variables */
.rsc-chatbot-popup .rsc-attach-btn {
    position: absolute;
    top: 50%;
    left: 1px;
    transform: translateY(-50%);
    z-index: 10;
    background-color: var(--rsc-attach-btn-bg, transparent);
    color: var(--rsc-attach-btn-color, #879399);
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--rsc-duration-fast) var(--rsc-ease-standard);
}

.rsc-chatbot-popup .rsc-attach-btn:hover {
    background-color: var(--rsc-attach-btn-bg-hover, #32b8c6);
    color: var(--rsc-attach-btn-color-hover, #ffffff);
    transform: translateY(-50%) scale(1.05);
}

.rsc-chatbot-popup .rsc-attach-btn:active {
    transform: translateY(-50%) scale(0.95);
}

/* Reset Button */
.rsc-chatbot-popup .rsc-reset-btn {
    background-color: transparent;
    color: var(--rsc-color-slate-500);
}

.rsc-chatbot-popup .rsc-reset-btn:hover {
    background-color: var(--rsc-color-error);
    color: var(--rsc-color-white);
}

/* Selected Image Preview */
.rsc-selected-image-container {
    padding: 0 var(--rsc-space-16) var(--rsc-space-12) 0;
    display: none;
    gap: var(--rsc-space-8);
    flex-wrap: wrap;
}

.rsc-selected-image-wrapper {
    position: relative;
    display: inline-block;
    margin-right: var(--rsc-space-8);
    margin-bottom: var(--rsc-space-8);
}

.rsc-selected-image-wrapper img {
    max-width: 100px;
    max-height: 100px;
    border-radius: var(--rsc-radius-sm);
    border: 1px solid var(--rsc-color-border);
    object-fit: cover;
}

.rsc-image-filename {
    position: absolute;
    bottom: -20px;
    left: 0;
    right: 0;
    font-size: 10px;
    color: var(--rsc-color-text-secondary);
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100px;
}

.rsc-cancel-selected-image {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 20px;
    height: 20px;
    background: var(--rsc-color-error);
    color: var(--rsc-color-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
}

/* Scroll to Bottom Button */
.rsc-scroll-to-bottom-btn {
    position: absolute;
    bottom: var(--rsc-space-16);
    right: var(--rsc-space-16);
    z-index: 10;
    background: var(--rsc-color-surface);
    color: var(--rsc-color-text-secondary);
    border: 1px solid var(--rsc-color-border);
    box-shadow: var(--rsc-shadow-sm);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--rsc-duration-fast) var(--rsc-ease-standard);
    opacity: 1;
}

.rsc-scroll-to-bottom-btn:hover {
    background: var(--rsc-color-primary);
    color: var(--rsc-color-btn-primary-text);
    transform: scale(1.05);
}

.rsc-scroll-to-bottom-btn.rsc-hidden {
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
}

/* Avatar Images */
.rsc-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.rsc-chatbot-avatar .rsc-avatar-img,
#rscHeaderAvatar .rsc-avatar-img {
    max-width: 28px;
    max-height: 28px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
}

.rsc-message-avatar .rsc-avatar-img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

/* Responsive */
@media (max-width: 768px) {
    .rsc-chatbot-container {
        width: 100%;
        height: 100%;
        max-width: none;
        max-height: none;
        border-radius: 0;
    }
}

/* 💡 新增：簡潔的 Thinking History 樣式（在 message-content 內部上方） */
.rsc-thinking-history-simple {
    margin-bottom: var(--rsc-space-4);
}

.rsc-thinking-toggle-simple {
    font-size: var(--rsc-font-size-sm);
    color: var(--rsc-color-text-secondary);
    padding: var(--rsc-space-4) 0;
    margin-left: -1px;
    user-select: none;
}

.rsc-thinking-toggle-simple:hover {
    color: var(--rsc-color-primary);
}

.rsc-thinking-icon {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transition: transform 0.2s ease;
}

.rsc-thinking-icon.rsc-chevron-right {
    transform: rotate(-45deg);
}

.rsc-thinking-icon.rsc-chevron-down {
    transform: rotate(45deg);
}

.rsc-thinking-content-simple {
    margin-top: var(--rsc-space-4);
}

.rsc-thinking-content-simple.rsc-hidden {
    display: none;
}

/* 💡 Thinking 文字樣式（由 PHP 動態注入，與後台設置一致） */
.rsc-thinking-text {
    /* 基礎樣式，具體的 font-size 和 color 由 PHP 動態注入 */
    margin-bottom: var(--rsc-space-8);
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.rsc-thinking-line {
    font-size: var(--rsc-font-size-sm);
    color: var(--rsc-color-text-secondary);
    line-height: 1.5;
    margin: 4px 0 6px 3px;
    padding-left: var(--rsc-space-8);
    border-left: 1px solid var(--rsc-color-text-secondary);
    /* 使用與 .rsc-thinking-text 相同的配置（透過 PHP 動態注入） */
}

/* 💡 新增：串流中的即時 thinking 列表（無收合按鈕） */
.rsc-live-thinking-list {
    margin-top: var(--rsc-space-8);
    animation: rscFadeIn 0.2s ease-out;
}

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

.rsc-live-thinking-list .rsc-thinking-line {
    animation: rscSlideIn 0.2s ease-out;
}

@keyframes rscSlideIn {
    from {
        opacity: 0;
        transform: translateX(-5px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}