/**
 * 공공톡 스타일시트
 * Google Material Design 스타일 적용
 */

/* ===== CSS 변수 정의 ===== */
:root {
    /* 기본 색상 */
    --primary-color: #4285f4;
    --primary-dark: #3367d6;
    --primary-light: #e8f0fe;
    --secondary-color: #34a853;
    --secondary-dark: #2e7d32;
    --accent-color: #fbbc04;
    --accent-dark: #f9a825;
    --error-color: #ea4335;
    --error-light: #fce8e6;
    
    /* 배경색 */
    --bg-color: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e8eaed;
    --bg-dark: #1a1a2e;
    --bg-dark-secondary: #16213e;
    
    /* 텍스트 색상 */
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --text-tertiary: #9aa0a6;
    --text-light: #ffffff;
    --text-dark: #202124;
    
    /* 테마 */
    --card-bg: #ffffff;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --card-shadow-hover: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
    
    /* 크기 */
    --header-height: 120px;
    --tab-height: 60px;
    --input-height: 80px;
    --border-radius: 12px;
    --border-radius-small: 8px;
    
    /* 애니메이션 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    
    /* 어르신 모드 폰트 크기 */
    --font-size-base: 16px;
    --font-size-large: 20px;
    --font-size-xlarge: 24px;
}

/* ===== 다크 모드 ===== */
[data-theme="dark"] {
    --bg-color: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    --card-bg: #16213e;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
    --card-shadow-hover: 0 3px 6px rgba(0, 0, 0, 0.5);
}

/* ===== 어르신 모드 ===== */
[data-elder="true"] {
    --font-size-base: 20px;
    --font-size-large: 24px;
    --font-size-xlarge: 28px;
}

[data-elder="true"] .message-text {
    font-size: var(--font-size-large) !important;
    line-height: 1.8 !important;
}

[data-elder="true"] .quick-btn {
    padding: 16px 24px;
    font-size: var(--font-size-large);
}

[data-elder="true"] .message-input {
    font-size: var(--font-size-large);
    padding: 16px 60px 16px 20px;
}

/* ===== 기본 리셋 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== 앱 컨테이너 ===== */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 100%;
    overflow: hidden;
}

/* ===== 헤더 ===== */
.app-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--text-light);
    padding: 16px 20px;
    box-shadow: var(--card-shadow);
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 40px;
    color: var(--text-light);
}

.logo-text h1 {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo-subtitle {
    font-size: 12px;
    opacity: 0.9;
}

.header-actions {
    display: flex;
    gap: 8px;
}

.icon-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
    color: var(--text-light);
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.icon-btn .material-icons {
    font-size: 22px;
}

.icon-btn.active {
    background: rgba(255, 255, 255, 0.4);
}

/* 지역 선택 바 */
.region-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.location-icon {
    font-size: 20px;
    color: var(--accent-color);
}

.region-select {
    flex: 1;
    padding: 8px 12px;
    border: none;
    border-radius: var(--border-radius-small);
    background: rgba(255, 255, 255, 0.95);
    color: var(--text-dark);
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
    outline: none;
}

.region-select:focus {
    box-shadow: 0 0 0 2px var(--accent-color);
}

/* ===== 에이전트 탭 ===== */
.agent-tabs {
    display: flex;
    gap: 8px;
    padding: 12px 20px;
    background: var(--bg-color);
    overflow-x: auto;
    border-bottom: 1px solid var(--bg-tertiary);
    -webkit-overflow-scrolling: touch;
}

.agent-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 10px 16px;
    border: none;
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 12px;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
    min-width: 70px;
}

.agent-tab .material-icons {
    font-size: 24px;
}

.agent-tab:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.agent-tab.active {
    background: var(--primary-color);
    color: var(--text-light);
    box-shadow: var(--card-shadow);
}

/* ===== 채팅 영역 ===== */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-secondary);
}

.message-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

/* ===== 환영 메시지 ===== */
.welcome-message {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    margin-bottom: 20px;
}

.bot-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.bot-avatar .material-icons {
    font-size: 32px;
    color: var(--text-light);
}

.welcome-content h2 {
    font-size: var(--font-size-xlarge);
    margin-bottom: 8px;
    color: var(--text-primary);
}

.welcome-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.quick-questions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.quick-btn {
    padding: 10px 16px;
    border: 1px solid var(--bg-tertiary);
    border-radius: 20px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition-fast);
}

.quick-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ===== 메시지 ===== */
.message {
    display: flex;
    gap: 12px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.message.bot .message-avatar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.message.user .message-avatar {
    background: var(--bg-tertiary);
}

.message-avatar .material-icons {
    font-size: 22px;
    color: var(--text-light);
}

.message.user .message-avatar .material-icons {
    color: var(--text-secondary);
}

.message-content {
    max-width: 75%;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.message.bot .message-content {
    background: var(--card-bg);
    border-top-left-radius: 4px;
}

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

.message-text {
    font-size: var(--font-size-base);
    line-height: 1.6;
    word-wrap: break-word;
}

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

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

/* ===== 데이터 카드 ===== */
.data-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-small);
    padding: 16px;
    margin-top: 12px;
}

.data-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--bg-tertiary);
}

.data-card-header .material-icons {
    font-size: 20px;
    color: var(--primary-color);
}

.data-card-title {
    font-weight: 600;
    color: var(--text-primary);
}

.data-card-item {
    display: flex;
    flex-direction: column;
    padding: 10px 0;
    border-bottom: 1px solid var(--bg-tertiary);
}

.data-card-item:last-child {
    border-bottom: none;
}

.data-item-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.data-item-info {
    font-size: 13px;
    color: var(--text-secondary);
}

.data-item-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 8px;
    color: var(--primary-color);
    font-size: 13px;
    text-decoration: none;
}

.data-item-link:hover {
    text-decoration: underline;
}

/* ===== 입력 영역 ===== */
.input-area {
    padding: 16px 20px;
    background: var(--bg-color);
    border-top: 1px solid var(--bg-tertiary);
}

.input-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.message-input {
    flex: 1;
    padding: 14px 50px 14px 20px;
    border: 2px solid var(--bg-tertiary);
    border-radius: 24px;
    font-size: var(--font-size-base);
    font-family: inherit;
    outline: none;
    transition: var(--transition-fast);
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.message-input:focus {
    border-color: var(--primary-color);
    background: var(--bg-color);
}

.message-input::placeholder {
    color: var(--text-tertiary);
}

.voice-btn,
.send-btn {
    position: absolute;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.voice-btn {
    right: 56px;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.voice-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.send-btn {
    right: 8px;
    width: 44px;
    height: 44px;
    background: var(--primary-color);
    color: var(--text-light);
}

.send-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.send-btn .material-icons,
.voice-btn .material-icons {
    font-size: 22px;
}

.input-hints {
    max-width: 900px;
    margin: 8px auto 0;
}

.hint-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--text-tertiary);
}

.hint-item .material-icons {
    font-size: 14px;
}

/* ===== 로딩 오버레이 ===== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.loading-overlay.hidden {
    display: none;
}

.loading-spinner {
    background: var(--bg-color);
    padding: 32px 48px;
    border-radius: var(--border-radius);
    text-align: center;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--bg-tertiary);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-spinner p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ===== TTS 패널 ===== */
.tts-panel {
    position: fixed;
    bottom: 100px;
    right: 20px;
    width: 320px;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow-hover);
    z-index: 500;
    overflow: hidden;
}

.tts-panel.hidden {
    display: none;
}

.tts-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--primary-color);
    color: var(--text-light);
}

.tts-header h3 {
    font-size: 14px;
    font-weight: 500;
}

.icon-btn-small {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    padding: 4px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn-small:hover {
    background: rgba(255, 255, 255, 0.2);
}

.icon-btn-small .material-icons {
    font-size: 18px;
}

.tts-content {
    padding: 16px;
    max-height: 150px;
    overflow-y: auto;
}

.tts-text {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
}

.tts-controls {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--bg-tertiary);
}

.tts-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 8px 12px;
    border: none;
    border-radius: var(--border-radius-small);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition-fast);
}

.tts-btn:hover {
    background: var(--bg-tertiary);
}

.tts-btn .material-icons {
    font-size: 18px;
}

/* ===== 토스트 ===== */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 24px;
    background: var(--text-primary);
    color: var(--text-light);
    border-radius: var(--border-radius);
    font-size: 14px;
    z-index: 1000;
    animation: slideUp 0.3s ease;
    box-shadow: var(--card-shadow-hover);
}

.toast.hidden {
    display: none;
}

.toast.error {
    background: var(--error-color);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* ===== 반응형 ===== */
@media (max-width: 768px) {
    .app-header {
        padding: 12px 16px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
    
    .header-actions {
        position: absolute;
        top: 12px;
        right: 16px;
    }
    
    .logo-text h1 {
        font-size: 20px;
    }
    
    .agent-tabs {
        padding: 8px 12px;
        gap: 6px;
    }
    
    .agent-tab {
        padding: 8px 12px;
        min-width: 60px;
    }
    
    .agent-tab .material-icons {
        font-size: 20px;
    }
    
    .agent-tab span:last-child {
        font-size: 11px;
    }
    
    .message-container {
        padding: 12px;
    }
    
    .welcome-message {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .quick-questions {
        justify-content: center;
    }
    
    .message-content {
        max-width: 85%;
    }
    
    .input-area {
        padding: 12px 16px;
    }
    
    .tts-panel {
        right: 10px;
        left: 10px;
        width: auto;
    }
}

/* ===== 스크롤바 ===== */
.message-container::-webkit-scrollbar,
.tts-content::-webkit-scrollbar {
    width: 6px;
}

.message-container::-webkit-scrollbar-track,
.tts-content::-webkit-scrollbar-track {
    background: transparent;
}

.message-container::-webkit-scrollbar-thumb,
.tts-content::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.message-container::-webkit-scrollbar-thumb:hover,
.tts-content::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* ===== 유틸리티 ===== */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-8 {
    margin-top: 8px;
}

.mt-16 {
    margin-top: 16px;
}