/* 기본 스타일 */
:root {
    --primary-color: #4a6da7;
    --primary-dark: #345089;
    --secondary-color: #f59e0b;
    --text-color: #333;
    --light-text: #666;
    --bg-color: #f8f9fa;
    --card-bg: #fff;
    --border-color: #e0e0e0;
    --error-color: #ef4444;
    --success-color: #10b981;
    --hover-color: #f1f5f9;
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Pretendard', 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    margin: 0;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 헤더 스타일 */
header {
    text-align: center;
    margin-bottom: 20px;
}

header h1 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.llm-selector {
    margin-bottom: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.llm-selector label {
    font-weight: 600;
    color: var(--primary-color);
}

#llmSelect {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: white;
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}

#llmSelect:focus {
    border-color: var(--primary-color);
}

.tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.tab {
    padding: 10px 20px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin: 0 5px;
    cursor: pointer;
    transition: var(--transition);
}

.tab:hover {
    background-color: var(--hover-color);
}

.tab.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 메인 컨텐츠 */
main {
    flex-grow: 1;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* 채팅 섹션 */
.chat-container {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    height: 70vh;
    display: flex;
    flex-direction: column;
}

.chat-messages {
    flex-grow: 1;
    overflow-y: auto;
    padding: 20px;
}

.message {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
}

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

.message-content {
    padding: 12px 16px;
    border-radius: 12px;
    max-width: 80%;
}

.message.system .message-content {
    background-color: #f0f7ff;
    color: var(--primary-dark);
}

.message.user .message-content {
    background-color: var(--primary-color);
    color: white;
    border-top-right-radius: 4px;
}

.message.bot .message-content {
    background-color: #f1f5f9;
    color: var(--text-color);
    border-top-left-radius: 4px;
}

.message p {
    margin-bottom: 8px;
}

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

.message .sources {
    font-size: 0.85em;
    color: var(--light-text);
    margin-top: 5px;
}

.message .source-item {
    margin-right: 10px;
}

.message .transcription {
    font-style: italic;
    opacity: 0.8;
    font-size: 0.9em;
    margin-bottom: 8px;
}

.chat-input-container {
    display: flex;
    padding: 15px;
    border-top: 1px solid var(--border-color);
    background-color: var(--card-bg);
}

#userInput {
    flex-grow: 1;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 10px 15px;
    font-size: 16px;
    resize: none;
    outline: none;
    transition: var(--transition);
}

#userInput:focus {
    border-color: var(--primary-color);
}

.mic-button, .send-button, .stop-recording-button {
    border: none;
    background-color: transparent;
    color: var(--primary-color);
    font-size: 20px;
    margin-left: 10px;
    cursor: pointer;
    transition: var(--transition);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mic-button:hover, .send-button:hover, .stop-recording-button:hover {
    background-color: var(--hover-color);
}

.stop-recording-button {
    background-color: var(--error-color);
    color: white;
}

.stop-recording-button:hover {
    background-color: #dc2626; /* 더 어두운 빨간색 */
}

.recording-status {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    background-color: rgba(239, 68, 68, 0.1);
    border-top: 1px solid var(--border-color);
    color: var(--error-color);
}

.recording-indicator {
    position: relative;
    width: 12px;
    height: 12px;
    margin-right: 10px;
}

.recording-pulse {
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: var(--error-color);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.8);
        opacity: 1;
    }
    70% {
        transform: scale(1.5);
        opacity: 0;
    }
    100% {
        transform: scale(0.8);
        opacity: 0;
    }
}

.hidden {
    display: none;
}

/* 문서 관리 섹션 */
.docs-container {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    padding: 20px;
}

.upload-section {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.upload-section h2, .docs-list-section h2 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.file-upload {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.file-upload input[type="file"] {
    display: none;
}

.file-upload label {
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.file-upload label:hover {
    background-color: var(--primary-dark);
}

#fileName {
    margin-left: 15px;
    color: var(--light-text);
}

.upload-button {
    padding: 10px 20px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.upload-button i {
    margin-right: 8px;
}

.upload-button:hover {
    background-color: #d97706; /* 더 어두운 주황색 */
}

.upload-status {
    margin-top: 15px;
    padding: 10px 15px;
    border-radius: 4px;
}

.upload-status.success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.upload-status.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.docs-list-section {
    position: relative;
}

.refresh-button {
    position: absolute;
    top: 0;
    right: 0;
    padding: 5px 10px;
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.refresh-button i {
    margin-right: 5px;
}

.refresh-button:hover {
    background-color: var(--hover-color);
}

.docs-list {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.docs-list th, .docs-list td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.docs-list th {
    background-color: #f1f5f9;
    font-weight: 600;
}

.docs-list tr:hover {
    background-color: var(--hover-color);
}

.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.no-docs-message {
    text-align: center;
    padding: 30px;
    color: var(--light-text);
}

/* 푸터 */
footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--light-text);
    font-size: 0.9em;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

footer p {
    margin-bottom: 5px;
}

.current-llm {
    color: var(--primary-color);
    font-weight: 500;
}

#currentLLMInfo {
    font-weight: 600;
}

/* 반응형 스타일 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .chat-container {
        height: 65vh;
    }
    
    .message-content {
        max-width: 90%;
    }
    
    .file-upload {
        flex-direction: column;
        align-items: flex-start;
    }
    
    #fileName {
        margin-left: 0;
        margin-top: 10px;
    }
    
    .refresh-button {
        position: static;
        margin-top: 10px;
        margin-bottom: 10px;
    }
    
    footer {
        flex-direction: column;
        text-align: center;
    }
    
    .current-llm {
        margin-top: 10px;
    }
    
    .llm-selector {
        flex-direction: column;
        gap: 5px;
    }
}