/* frontend/style.css */
/* 1. 라이트 모드 (기본) 변수 정의 */
:root {
    --bg-color: #F9FAFB;
    --card-bg-color: #FFFFFF;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --border-color: #E5E7EB;
    --accent-color: #4F46E5;
    --accent-hover-color: #4338CA;
    --accent-light-color: #EEF2FF;
    --error-bg-color: #FEF2F2;
    --error-text-color: #991B1B;
    --error-border-color: #F87171;
    --font-family: 'Inter', 'Noto Sans KR', sans-serif;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --sidebar-width: 350px;
    --header-height: 68px;
}

/* 2. 다크 모드 변수 정의 */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #111827;
        --card-bg-color: #1F2937;
        --text-primary: #F9FAFB;
        --text-secondary: #9CA3AF;
        --border-color: #374151;
        --accent-color: #6366F1;
        --accent-hover-color: #818CF8;
        --accent-light-color: #312E81;
        --error-bg-color: #2B1B1B;
        --error-text-color: #FCA5A5;
        --error-border-color: #B91C1C;
    }
}

/* 3. 기본 및 레이아웃 스타일 */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow: hidden;
}
.app-layout { display: flex; position: relative; }

/* 4. 사이드바 스타일 */
#sidebar-toggle-btn {
    position: fixed; top: calc((var(--header-height) - 44px) / 2); left: 20px; z-index: 20; background: var(--card-bg-color);
    border: 1px solid var(--border-color); box-shadow: var(--shadow); width: 44px;
    height: 44px; border-radius: 50%; display: flex; align-items: center;
    justify-content: center; cursor: pointer; color: var(--text-secondary);
    transition: all 0.3s ease-in-out;
}
#sidebar-toggle-btn:hover { background-color: var(--bg-color); transform: scale(1.1); }
#sidebar-toggle-btn i { transition: transform 0.3s ease-in-out; width: 20px; height: 20px; }

#debug-sidebar {
    width: var(--sidebar-width); background-color: var(--card-bg-color); height: 100vh;
    border-right: 1px solid var(--border-color); position: fixed; left: 0; top: 0;
    display: flex; flex-direction: column; transform: translateX(0);
    transition: all 0.3s ease-in-out; z-index: 10;
}
.sidebar-header { height: var(--header-height); display: flex; align-items: center; justify-content: center; padding: 0 20px; border-bottom: 1px solid var(--border-color); flex-shrink: 0; }
.sidebar-header h2 { font-size: 1.1rem; font-weight: 600; }
.sidebar-content { padding: 20px; overflow-y: auto; }
.debug-item { margin-bottom: 20px; }
.debug-item strong { font-size: 0.8rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; font-weight: 600; }
.debug-item p { font-size: 0.9rem; padding: 12px; border-radius: 6px; margin-top: 8px; background-color: var(--bg-color); word-wrap: break-word; color: var(--text-primary); line-height: 1.6; }
.debug-item .code-container-debug { position: relative; margin-top: 8px; }
.debug-item pre { margin: 0; border-radius: 6px; padding: 0; overflow: hidden; border: 1px solid var(--border-color); }
.debug-item pre code { font-size: 0.9rem; padding: 15px; white-space: pre-wrap; word-wrap: break-word; display: block; line-height: 1.7; }
.copy-btn-debug {
    position: absolute; top: 8px; right: 8px; background: rgba(100,100,100,0.3);
    color: #fff; border: none; padding: 5px; border-radius: 6px; cursor: pointer;
    opacity: 0.6; transition: opacity 0.2s ease; line-height: 0;
}
.copy-btn-debug:hover { opacity: 1; }
.copy-btn-debug i { width: 16px; height: 16px; }

body.sidebar-collapsed #debug-sidebar { transform: translateX(calc(-1 * var(--sidebar-width))); }
body.sidebar-collapsed #main-container, body.sidebar-collapsed #results-wrapper { margin-left: 0; }
body.sidebar-collapsed #sidebar-toggle-btn i { transform: rotate(180deg); }


/* 5. 메인 콘텐츠 스타일 (수정) */
#main-container {
    width: 100%; margin-left: var(--sidebar-width); display: flex;
    flex-direction: column; height: 100vh; transition: margin-left 0.3s ease-in-out;
    padding-bottom: 58px; /* 결과 패널 헤더 높이만큼 여백 */
}
header { padding: 20px 40px; text-align: center; flex-shrink: 0; height: calc(var(--header-height) + 40px); display: flex; flex-direction: column; justify-content: center; }
header h1 { font-size: 1.8rem; font-weight: 700; }
header p { font-size: 1rem; color: var(--text-secondary); margin-top: 8px; max-width: 600px; margin-left: auto; margin-right: auto;}
main#chat-feed { flex-grow: 1; overflow-y: auto; padding: 0 40px 20px; display: flex; flex-direction: column; gap: 25px; }
footer#input-area { padding: 20px 40px; border-top: 1px solid var(--border-color); flex-shrink: 0; background-color: var(--card-bg-color);}
.input-wrapper { display: flex; align-items: center; background-color: var(--bg-color); border-radius: 12px; padding: 8px; border: 1px solid var(--border-color); max-width: 900px; margin: 0 auto; }
textarea#nl-input { flex-grow: 1; border: none; background: transparent; padding: 10px; font-size: 1rem; resize: none; outline: none; color: var(--text-primary); }
button#send-btn { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; border: none; border-radius: 10px; background-color: var(--accent-color); color: white; cursor: pointer; transition: background-color 0.2s ease; }
button#send-btn:hover { background-color: var(--accent-hover-color); }
button#send-btn i { width: 20px; height: 20px; }

/* 6. 결과 패널 스타일 */
#results-wrapper {
    position: fixed; bottom: 0; left: 0; right: 0; margin-left: var(--sidebar-width);
    background-color: var(--card-bg-color); border-top: 1px solid var(--border-color);
    box-shadow: 0 -5px 20px rgba(0,0,0,0.08); transition: margin-left 0.3s ease-in-out, transform 0.4s ease-in-out;
    transform: translateY(0); z-index: 5;
}
#results-wrapper.collapsed { transform: translateY(calc(100% - 58px)); }
#results-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0 40px; height: 58px; cursor: pointer;
}
#results-header h3 { font-weight: 600; display: flex; align-items: center; gap: 8px; }
#results-header h3 i { width: 20px; height: 20px; color: var(--text-secondary); }
#toggle-results-btn { background: none; border: none; color: var(--text-secondary); cursor: pointer; }
#toggle-results-btn i { transition: transform 0.3s ease-in-out; }
#results-wrapper.collapsed #toggle-results-btn i { transform: rotate(180deg); }
#results-display {
    max-height: 50vh; overflow-y: auto; padding: 20px 40px;
}

/* 7. 대화형 UI 요소 스타일 */
.chat-message { display: flex; flex-direction: column; max-width: 90%; animation: fadeIn 0.5s ease; margin-left: auto; margin-right: auto; width: 100%;}
.user-message { align-self: flex-end; }
.bot-message { align-self: flex-start; }
.message-content { padding: 15px 20px; border-radius: 16px; line-height: 1.6; }
.user-message .message-content { background-color: var(--accent-color); color: white; border-bottom-right-radius: 4px; }
.bot-message .message-content { background-color: var(--card-bg-color); border: 1px solid var(--border-color); box-shadow: var(--shadow); border-bottom-left-radius: 4px; }
.bot-message h3 { margin-bottom: 15px; font-weight: 600; display: flex; align-items: center; gap: 8px;}
.bot-message h3 i { width: 20px; height: 20px; color: var(--text-secondary); }
.model-used-badge {
    background-color: var(--bg-color);
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    display: inline-block;
    margin-bottom: 10px;
    border: 1px solid var(--border-color);
}
.info-box { background-color: var(--accent-light-color); color: var(--text-primary); padding: 15px; border-radius: 12px; margin: 10px 0; }
.code-box { border-radius: 12px; font-family: monospace; position: relative; padding: 0; overflow: hidden; border: 1px solid var(--border-color); }
.code-box code { padding: 15px; display: block; white-space: pre-wrap; background-color: transparent; }
.copy-btn { position: absolute; top: 12px; right: 12px; background: rgba(100,100,100,0.3); color: #fff; border: none; padding: 5px; border-radius: 6px; cursor: pointer; line-height: 0; }
.copy-btn i { width: 16px; height: 16px; }
.button-group { margin-top: 15px; display: flex; gap: 10px; }
button.action-btn { font-size: 0.9rem; font-weight: 500; padding: 8px 15px; border-radius: 8px; cursor: pointer; border: 1px solid transparent; transition: all 0.2s ease; }
button.action-btn.primary { background-color: var(--accent-color); color: white; }
button.action-btn.primary:hover { background-color: var(--accent-hover-color); }
button.action-btn.secondary { background-color: var(--card-bg-color); color: var(--text-primary); border-color: var(--border-color); }
button.action-btn.secondary:hover { background-color: var(--bg-color); }
.result-table-container { max-height: 400px; overflow: auto; border: 1px solid var(--border-color); border-radius: 8px;}
.result-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.result-table th, .result-table td { border-bottom: 1px solid var(--border-color); padding: 12px; text-align: left; }
.result-table th { background-color: var(--bg-color); position: sticky; top: 0; }
.typing-indicator { display: flex; align-items: center; padding: 10px 0; }
.typing-indicator span { height: 8px; width: 8px; margin: 0 2px; background-color: var(--text-secondary); border-radius: 50%; animation: typing 1.4s infinite; }
.error-message-content { background-color: var(--error-bg-color); border-left: 4px solid var(--error-border-color); }
.error-message-content strong, .error-message-content p { color: var(--error-text-color); }
.error-message-content strong { font-weight: 600; display: block; margin-bottom: 5px; }
.error-message-content p { color: var(--error-text-color); font-size: 0.95rem; line-height: 1.7; white-space: pre-wrap; }

/* 8. 차트 컨테이너 스타일 추가 */
.result-chart {
    width: 100%;
    min-height: 350px; /* 최소 높이를 지정하여 차트가 그려질 공간 확보 */
    margin-top: 20px;
}

@keyframes typing { 0%, 80%, 100% { transform: scale(0); opacity: 0; } 40% { transform: scale(1.0); opacity: 1; } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }