/* ========== CSS 변수 (라이트 모드) ========== */
:root {
    --chat-font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans KR", Arial, sans-serif;
    --chat-mono-font: ui-monospace, SFMono-Regular, Consolas, "Ubuntu Mono", "Roboto Mono", monospace;
    --chat-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --chat-thread-max-width: 920px;
    --assistant-bg: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    --assistant-border: #e2e8f0;
    --user-bg: linear-gradient(145deg, #3b82f6 0%, #1d4ed8 100%);
    --user-border: #2563eb;
    --system-bg: linear-gradient(145deg, #f59e0b 0%, #d97706 100%);
    --system-border: #f59e0b;
    --tool-bg: linear-gradient(145deg, #10b981 0%, #059669 100%);
    --tool-border: #10b981;
    --text-color: #1e293b;
    --user-text-color: #ffffff;
    --system-text-color: #ffffff;
    --tool-text-color: #ffffff;
    --muted-text: #64748b;
    --code-inline-bg: #f1f5f9;
    --code-inline-color: #e11d48;
    --code-bg: #0f172a;
    --code-fg: #f1f5f9;
    --code-header-bg: #1e293b;
    --code-header-fg: #cbd5e1;
    --code-border: #334155;
    --border-radius-sm: 6px;
    --border-radius: 12px;
    --border-radius-lg: 18px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
    --focus-ring: 0 0 0 3px rgba(59,130,246,0.5);
    --scrollbar-track: rgba(0,0,0,0.05);
    --scrollbar-thumb: rgba(0,0,0,0.2);
    --scrollbar-thumb-hover: rgba(0,0,0,0.35);
    --link-color: #2563eb;
    --link-hover: #1d4ed8;
    --copy-btn-bg: #475569;
    --copy-btn-bg-hover: #334155;
    --copy-btn-fg: #f8fafc;
    --copy-success-bg: #059669;
    --message-hover-shadow: 0 2px 2px rgba(0,0,0,0.15);
}

.bg-light-primary {
    background-color: #ebf8ff !important;
}

.chat-question {
    width: 100%;
    min-width: 300px;
}

/* ========== 스레드 컨테이너 ========== */
.chatgpt-thread {
    /*background: var(--chat-bg);
    padding: 2rem 1.5rem 3rem;*/
    background: inherit;
    padding: 0;
    font-family: var(--chat-font-family);
    color: var(--text-color);
    margin: 0 auto;
    max-width: var(--chat-thread-max-width);
    box-sizing: border-box;
    /*min-height: 100vh;*/
    position: relative;
}

    .chatgpt-thread::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/></svg>') repeat;
        pointer-events: none;
    }

    .chatgpt-thread * {
        box-sizing: border-box;
    }

    .chatgpt-thread a {
        color: var(--link-color);
        text-decoration: none;
        font-weight: 500;
        transition: color 0.2s ease;
    }

        .chatgpt-thread a:hover {
            text-decoration: underline;
            color: var(--link-hover);
        }

    .chatgpt-thread .message {
        display: flex;
        align-items: flex-start;
        gap: 1rem;
        padding: 1.5rem;
        border: 1px solid transparent;
        border-radius: var(--border-radius-lg);
        margin: 0 0 1.5rem;
        position: relative;
        line-height: 1.6;
        /*box-shadow: var(--shadow);*/
        animation: slideInUp 0.4s ease-out;
        transition: all 0.3s ease;
        backdrop-filter: blur(10px);
    }

        .chatgpt-thread .message:hover {
            transform: translateY(-2px);
            box-shadow: var(--message-hover-shadow);
        }

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }

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

.message.assistant {
    background: var(--assistant-bg);
    border-color: var(--assistant-border);
    color: var(--text-color);
}

.message.user {
    background: var(--user-bg);
    border-color: var(--user-border);
    color: var(--user-text-color);
}

.message.system {
    background: var(--system-bg);
    border-color: var(--system-border);
    color: var(--system-text-color);
    font-size: 0.95rem;
}

.message.tool {
    background: var(--tool-bg);
    border-color: var(--tool-border);
    color: var(--tool-text-color);
    font-size: 0.92rem;
    font-family: var(--chat-mono-font);
}

.message:focus-within {
    outline: none;
    box-shadow: var(--focus-ring), var(--shadow-lg);
}

/* 아바타 */
.message .avatar {
    flex: 0 0 48px;
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15), inset 0 0 0 2px rgba(255,255,255,0.2);
    user-select: none;
    position: relative;
    overflow: hidden;
}

    .message .avatar::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
        animation: shimmer 3s ease-in-out infinite;
    }

@keyframes shimmer {
    0%, 100% {
        transform: rotate(0deg);
        opacity: 0;
    }

    50% {
        transform: rotate(180deg);
        opacity: 1;
    }
}

.message.user .avatar {
    background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
}

.message.system .avatar {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    font-size: 0.85rem;
}

.message.tool .avatar {
    background: linear-gradient(135deg, #10b981 0%, #047857 100%);
    font-size: 0.85rem;
}

/* 본문 */
.message .content {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    font-size: 1.05rem;
    font-weight: 400;
}

    .message .content p {
        margin: 0 0 1rem;
        line-height: 1.7;
    }

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

    .message .content h1,
    .message .content h2,
    .message .content h3,
    .message .content h4 {
        font-weight: 600;
        line-height: 1.3;
        margin: 1.5em 0 0.8em;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

.message.user .content h1,
.message.user .content h2,
.message.user .content h3,
.message.user .content h4,
.message.system .content h1,
.message.system .content h2,
.message.system .content h3,
.message.system .content h4,
.message.tool .content h1,
.message.tool .content h2,
.message.tool .content h3,
.message.tool .content h4 {
    -webkit-text-fill-color: inherit;
    background: none;
}

.message .content h1 {
    font-size: 1.75rem;
}

.message .content h2 {
    font-size: 1.5rem;
}

.message .content h3 {
    font-size: 1.25rem;
}

.message .content h4 {
    font-size: 1.1rem;
}

.message .content ul, .message .content ol {
    margin: 0.8rem 0 1.2rem 1.5rem;
    padding: 0;
}

.message .content li {
    margin: 0.4rem 0;
    line-height: 1.6;
}

    .message .content li > ul,
    .message .content li > ol {
        margin-top: 0.3rem;
    }

.message .content blockquote {
    margin: 1.2rem 0;
    padding: 1rem 1.2rem;
    background: linear-gradient(145deg, rgba(59,130,246,0.1) 0%, rgba(29,78,216,0.05) 100%);
    border-left: 4px solid #3b82f6;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    font-size: 0.95rem;
    font-style: italic;
    position: relative;
    overflow: hidden;
}

    .message .content blockquote::before {
        content: '"';
        position: absolute;
        top: -10px;
        left: 10px;
        font-size: 4rem;
        color: rgba(59,130,246,0.2);
        font-family: Georgia, serif;
    }

.message .content table {
    border-collapse: collapse;
    width: 100%;
    margin: 1.2rem 0 1.5rem;
    font-size: 0.9rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

    .message .content table th,
    .message .content table td {
        border: 1px solid rgba(0,0,0,0.1);
        padding: 0.8rem;
        vertical-align: top;
    }

    .message .content table th {
        background: linear-gradient(145deg, #f8fafc 0%, #e2e8f0 100%);
        font-weight: 600;
        text-align: left;
        color: var(--text-color);
    }

    .message .content table tr:nth-child(even) {
        background: rgba(248,250,252,0.5);
    }

    .message .content table tr:hover {
        background: rgba(59,130,246,0.05);
        transition: background 0.2s ease;
    }

/* 인라인 코드 */
.message .content code.inline-code {
    background: var(--code-inline-bg);
    color: var(--code-inline-color);
    padding: 0.2rem 0.5rem 0.25rem;
    border-radius: var(--border-radius-sm);
    font-family: var(--chat-mono-font);
    font-size: 0.85rem;
    white-space: break-spaces;
    border: 1px solid rgba(226,232,240,0.8);
    font-weight: 500;
}

/* 코드 블록 */
.code-wrapper {
    margin: 1.5rem 0;
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--code-bg);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    background: var(--code-header-bg);
    color: var(--code-header-fg);
    font-size: 0.7rem;
    letter-spacing: 0.5px;
    padding: 0.6rem 1rem;
    font-family: var(--chat-mono-font);
    text-transform: uppercase;
    font-weight: 600;
}

    .code-header .lang {
        opacity: 0.8;
        display: flex;
        align-items: center;
        gap: 0.4rem;
    }

        .code-header .lang::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #10b981;
            box-shadow: 0 0 6px rgba(16,185,129,0.5);
        }

    .code-header .copy-code {
        background: var(--copy-btn-bg);
        color: var(--copy-btn-fg);
        border: 1px solid rgba(255,255,255,0.2);
        padding: 0.4rem 0.8rem;
        font-size: 0.65rem;
        line-height: 1;
        border-radius: var(--border-radius-sm);
        cursor: pointer;
        position: relative;
        transition: all 0.2s ease;
        font-weight: 500;
    }

        .code-header .copy-code:hover {
            background: var(--copy-btn-bg-hover);
            transform: translateY(-1px);
            box-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }

        .code-header .copy-code:active {
            transform: scale(0.95);
        }

        .code-header .copy-code.copied {
            background: var(--copy-success-bg);
            border-color: var(--copy-success-bg);
        }

pre.code-block {
    margin: 0;
    padding: 1.2rem;
    overflow: auto;
    font-size: 0.8rem;
    line-height: 1.5;
    font-family: var(--chat-mono-font);
    color: var(--code-fg);
    background: transparent;
    scrollbar-width: thin;
}

    pre.code-block::-webkit-scrollbar {
        height: 12px;
        width: 12px;
    }

    pre.code-block::-webkit-scrollbar-track {
        background: var(--scrollbar-track);
        border-radius: 8px;
    }

    pre.code-block::-webkit-scrollbar-thumb {
        background: var(--scrollbar-thumb);
        border-radius: 8px;
        border: 2px solid var(--code-bg);
    }

        pre.code-block::-webkit-scrollbar-thumb:hover {
            background: var(--scrollbar-thumb-hover);
        }

/* 긴 단어 줄바꿈 */
.message .content,
.message .content code {
    overflow-wrap: anywhere;
    word-break: break-word;
}

    /* 이미지 */
    .message .content img {
        max-width: 100%;
        border-radius: var(--border-radius);
        display: block;
        margin: 1rem 0;
        box-shadow: var(--shadow-lg);
        transition: transform 0.3s ease;
    }

        .message .content img:hover {
            transform: scale(1.02);
        }

    /* 수평선 */
    .message .content hr {
        border: none;
        border-top: 2px solid rgba(59,130,246,0.2);
        margin: 2rem 0;
        position: relative;
    }

        .message .content hr::after {
            content: '';
            position: absolute;
            top: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 2px;
            background: linear-gradient(90deg, #3b82f6, #1d4ed8);
            border-radius: 2px;
        }

/* 툴팁 */
[data-tooltip] {
    position: relative;
    cursor: help;
}

    [data-tooltip]:hover::after {
        content: attr(data-tooltip);
        position: absolute;
        z-index: 30;
        top: 100%;
        left: 0;
        background: #1f2937;
        color: #f9fafb;
        padding: 0.5rem 0.8rem;
        font-size: 0.7rem;
        border-radius: var(--border-radius-sm);
        margin-top: 0.5rem;
        pointer-events: none;
        white-space: nowrap;
        box-shadow: var(--shadow-lg);
        animation: tooltipFadeIn 0.2s ease;
    }

@keyframes tooltipFadeIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }

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

/* 반응형 */
@media (max-width: 768px) {
    .chatgpt-thread {
        padding: 1.5rem 1rem 2.5rem;
    }

    .message {
        padding: 1.2rem 1rem;
        gap: 0.8rem;
    }

        .message .avatar {
            width: 40px;
            height: 40px;
            font-size: 0.8rem;
        }

        .message .content {
            font-size: 1rem;
        }

    pre.code-block {
        font-size: 0.75rem;
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .chatgpt-thread {
        padding: 1rem 0.75rem 2rem;
    }

    .message {
        padding: 1rem 0.8rem;
        margin-bottom: 1rem;
    }

        .message .avatar {
            width: 36px;
            height: 36px;
            font-size: 0.75rem;
        }
}

/* 포커스 접근성 */
.copy-code:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

/* 유틸리티 */
.muted {
    color: var(--muted-text);
    font-size: 0.9em;
}

/* 열거형 서브헤딩 스타일 개선 */
h3.enum-sub {
    margin-left: 1rem;
    position: relative;
    padding-left: 0.8rem;
    font-size: 1.1rem;
}

    h3.enum-sub::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0.4em;
        width: 4px;
        height: 1.2em;
        background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
        border-radius: 3px;
        opacity: 0.7;
        box-shadow: 0 2px 4px rgba(59,130,246,0.3);
    }

    h3.enum-sub.first-sub {
        color: #1d4ed8;
        font-weight: 700;
    }

        h3.enum-sub.first-sub::before {
            background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
            box-shadow: 0 2px 4px rgba(245,158,11,0.3);
        }

/* 걸린 시간 표시 스타일 */
.elapsed-time {
    font-size: 0.75rem;
    color: #6c757d;
    font-style: italic;
    margin-top: 5px;
}

.response-container {
    position: relative;
}

.time-badge {
    background-color: #f8f9fa;
    color: #6c757d;
    border: 1px solid #dee2e6;
    border-radius: 12px;
    padding: 2px 8px;
    font-size: 0.7rem;
    margin-top: 5px;
    display: inline-block;
}


/* 챗봇 모달 */
@media (min-width: 992px) {
    [data-kt-app-sidebar-fixed=true] .app-sidebar {
        position: fixed;
        z-index: 10;
        top: 0;
        bottom: 0;
        left: 0;
    }

    .chatbot-view .modal-chatbot-dialog {
        width: 95vw;
        height: 95vh;
    }

    .modal-chatbot-dialog {
        width: 95vw;
        height: 95vh;
    }
}

/* Simple modal styles (no external modal library) */
.modal-chatbot {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: none;
    z-index: 9999; /* above app content */
    overflow: hidden;
    outline: 0;
}

    .modal-chatbot.show {
        display: block;
    }

.modal-chatbot-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    display: none;
}

    .modal-chatbot-backdrop.show {
        display: block;
    }

.modal-chatbot-dialog {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 95vw;
    height: 95vh;
    margin: 0;
}

.modal-chatbot-content {
    background: #fff;
    border-radius: .5rem;
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,.15);
    height: 100%;
    max-height: 100%;
    display: flex;
    flex-direction: column;
}

.modal-chatbot-header, .modal-chatbot-footer {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid #eff2f5;
}

.modal-chatbot-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-chatbot-body {
    padding: 1rem 1.25rem;
    overflow: hidden;
    flex: 1 1 auto;
}

.modal-chatbot-close-btn {
    border: none;
    background: transparent;
    font-size: 13px;
    line-height: 1;
}

/* keep existing chatbot sizing hooks */
.chatbot-view .modal-chatbot-dialog {
    width: 95vw;
    height: 95vh;
}


/* Prevent page (outer) scrollbar when modal is open */
body.modal-chatbot-open {
    overflow: hidden !important;
    overscroll-behavior: contain;
}



/* Chatbot list styling */
.chatbot-list {
    /* Dark theme tokens */
    --item-bg: #111827; /* gray-900 */
    --item-hover-bg: #1f2937; /* gray-800 */
    --item-active-bg: #1e293b; /* slate-800 */
    --item-border: #2d3748; /* gray-700 */

    background-color: #1e2f56; /* slate-900 */
    border-radius: .75rem;
}

.chatbot-item {
    border-radius: .65rem;
    transition: background-color .15s ease, transform .15s ease, box-shadow .15s ease;
    border: 1px solid var(--item-border);
    background-color: var(--item-bg);
    cursor: pointer;
    color: #e5e7eb; /* text-gray-200 */
}

.chatbot-item:hover {
    background-color: var(--item-hover-bg);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(0,0,0,.06);
}

.chatbot-item.active {
    background-color: var(--item-active-bg);
    border-color: #cfe2ff;
    box-shadow: 0 0 0 3px rgba(13,110,253,.15);
}

.chatbot-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3699ff, #0ea5e9);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: .95rem;
}

.chatbot-title {
    color: #e5e7eb; /* text-gray-200 for dark bg */
    font-weight: 600;
    line-height: 1.2;
}

    .chatbot-title:hover {
        color: #93c5fd;
    }

.chatbot-meta {
    font-size: .8rem;
    color: #9ca3af; /* text-gray-400 */
}

/* Focus accessibility on dark background */
.chatbot-item:focus-visible {
    outline: 3px solid #2563eb;
    outline-offset: 2px;
}

.modal-chatbot-header {
    background-color: #1e2f56;
    color: #fff;
}

.modal-chatbot-body {
    background-color: #eff1ff;
}

.chatbot-view .btn.btn-primary {
    background-color: #2070ce;
}

/* Ensure messenger body scrolls and footer remains visible */
#kt_chat_messenger {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0; /* allow children to shrink */
}

#kt_chat_messenger_body {
    flex: 1 1 auto;
    min-height: 0; /* critical for flex scroll areas */
}

/* Inner scroll container should take full height and scroll */
.messages-scroll {
    height: 100%;
    overflow-y: auto;
    /* reserve space so last message isn't hidden under footer */
    padding-bottom: 96px;
}