:root {
    --primary: #0078d7;
    --primary-light: #3a9bfa;
    --secondary: #ff8c00;
    --dark: #121212;
    --dark-secondary: #1e1e1e;
    --dark-tertiary: #2d2d2d;
    --light: #f5f5f5;
    --text-light: #e0e0e0;
    --text-secondary: #a0a0a0;
    --success: #2ecc71;
    --danger: #e74c3c;
    --warning: #f1c40f;
    --shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
    --border-radius: 16px;
    --border-radius-small: 8px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

html {
    font-size: 16px;
}

body {
    color: var(--text-light);
    line-height: 1.6;
    font-weight: 400;
    overflow-x: hidden;
}

body.dark-mode {
    background-color: var(--dark);
}

/* 헤더 스타일 */
header {
    background-color: var(--dark-secondary);
    color: white;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.location {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.today-info {
    text-align: right;
}

.date {
    font-size: 1.1rem;
}

/* 메인 컨텐츠 */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* 현재 날씨 카드 */
.weather-card {
    background: var(--dark-secondary);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.main-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem;
}

.card-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.weather-icon-large {
    font-size: 4rem;
    color: var(--text-light);
}

.current-temp {
    font-size: 5rem;
    font-weight: 700;
    line-height: 1;
}

.card-right {
    text-align: right;
}

.weather-description {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.weather-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.weather-detail {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.weather-detail i {
    margin-right: 0.5rem;
    width: 20px;
    text-align: center;
}

/* 탭 컨테이너 */
.tab-container {
    margin-bottom: 1rem;
}

.tabs {
    display: flex;
    border-radius: var(--border-radius-small);
    overflow: hidden;
    background-color: var(--dark-tertiary);
}

.tab-btn {
    flex: 1;
    background: none;
    border: none;
    padding: 0.8rem;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

/* 시간대별 예보 */
.hourly-chart-container {
    background-color: var(--dark-tertiary);
    padding: 1rem;
    border-radius: var(--border-radius-small);
    margin-bottom: 1rem;
    height: 180px;
}

.hourly-forecast {
    overflow-x: auto;
    display: flex;
    gap: 0.5rem;
    padding: 0.5rem;
    scrollbar-width: thin;
}

.hourly-forecast::-webkit-scrollbar {
    height: 6px;
}

.hourly-forecast::-webkit-scrollbar-track {
    background: var(--dark-tertiary);
    border-radius: 10px;
}

.hourly-forecast::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}

.hourly-item {
    min-width: 80px;
    padding: 1rem 0.8rem;
    background-color: var(--dark-tertiary);
    border-radius: var(--border-radius-small);
    text-align: center;
    flex-shrink: 0;
}

.hourly-time {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.hourly-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.hourly-temp {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.hourly-precip {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.hourly-precip i {
    color: #3498db;
    margin-right: 0.3rem;
}

/* 모델 비교 */
.model-comparison {
    display: flex;
    gap: 1rem;
}

.model-box {
    flex: 1;
    background-color: var(--dark-tertiary);
    border-radius: var(--border-radius-small);
    padding: 1rem;
}

.model-box h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    text-align: center;
}

.model-box.traditional h3 {
    color: var(--primary-light);
}

.model-box.ai h3 {
    color: var(--secondary);
}

.model-data {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.model-item {
    display: flex;
    justify-content: space-between;
}

.model-label {
    color: var(--text-secondary);
}

/* 10일 예보 */
.forecast-section h2 {
    margin: 2rem 0 1.5rem 0;
    font-size: 1.8rem;
}

.forecast-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}

.forecast-day {
    background-color: var(--dark-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.forecast-day:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.3);
}

.forecast-date {
    background-color: var(--dark-tertiary);
    padding: 0.8rem;
    font-weight: 600;
    text-align: center;
    font-size: 1.1rem;
}

.forecast-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.forecast-temp {
    font-size: 1.8rem;
    font-weight: 700;
}

.temp-range {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.temp-max {
    color: #e74c3c;
}

.temp-min {
    color: #3498db;
}

.forecast-icon {
    font-size: 3rem;
}

.forecast-details {
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--dark-tertiary);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.forecast-detail i {
    margin-right: 0.3rem;
}

/* 모달 */
.modal {
    display: none;
    position: fixed;
    z-index: 999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.8);
}

.modal-content {
    position: relative;
    background-color: var(--dark-secondary);
    margin: 5% auto;
    padding: 1.5rem;
    width: 90%;
    max-width: 800px;
    border-radius: var(--border-radius);
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.3);
    animation: fadeIn 0.3s;
}

.close-modal {
    color: var(--text-secondary);
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 2rem;
    cursor: pointer;
}

.close-modal:hover {
    color: var(--text-light);
}

#modalDate {
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--dark-tertiary);
}

.modal-tabs {
    display: flex;
    margin-bottom: 1.5rem;
    border-radius: var(--border-radius-small);
    overflow: hidden;
    background-color: var(--dark-tertiary);
}

.modal-tab-btn {
    flex: 1;
    background: none;
    border: none;
    padding: 0.8rem;
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

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

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.detail-item {
    background-color: var(--dark-tertiary);
    padding: 1rem;
    border-radius: var(--border-radius-small);
}

.detail-label {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.detail-value {
    font-size: 1.3rem;
    font-weight: 600;
}

.comparison-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.comparison-box {
    background-color: var(--dark-tertiary);
    padding: 1.5rem;
    border-radius: var(--border-radius-small);
}

.comparison-box h3 {
    margin-bottom: 1rem;
    text-align: center;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--dark);
}

.comparison-box.traditional h3 {
    color: var(--primary-light);
}

.comparison-box.ai h3 {
    color: var(--secondary);
}

.comparison-items {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

/* 푸터 */
footer {
    background-color: var(--dark-secondary);
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 유틸리티 클래스 */
.hidden {
    display: none;
}

.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.error {
    text-align: center;
    padding: 2rem;
    color: var(--danger);
    background-color: rgba(231, 76, 60, 0.1);
    border-radius: var(--border-radius);
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

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

/* 반응형 디자인 */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    header {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .logo {
        text-align: center;
    }
    
    .today-info {
        text-align: center;
    }
    
    .main-card {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .card-right {
        text-align: center;
    }
    
    .model-comparison {
        flex-direction: column;
    }
    
    .comparison-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .forecast-container {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    
    .hourly-item {
        min-width: 70px;
        padding: 0.8rem 0.5rem;
    }
}

/* 접근성 강화 */
button:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* 미세먼지 정보 스타일 */
.dust-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    padding: 1rem 0;
    margin-top: 1rem;
    border-top: 1px solid var(--dark-tertiary);
    grid-column: 1 / -1;
}

.dust-item {
    text-align: center;
    background-color: var(--dark-tertiary);
    border-radius: var(--border-radius-small);
    padding: 0.8rem;
    transition: var(--transition);
}

.dust-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.dust-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.dust-label i {
    margin-right: 0.3rem;
}

.dust-value {
    font-size: 1.1rem;
    font-weight: 600;
}

.dust-value.good {
    color: #2ecc71;
}

.dust-value.moderate {
    color: #f1c40f;
}

.dust-value.bad {
    color: #e74c3c;
}

.dust-value.very-bad {
    color: #9b59b6;
}

/* 메인 카드 수직 레이아웃 */
.main-card {
    flex-direction: column;
    padding: 1.5rem;
}

.card-content {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.card-row {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.current-icon-temp {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.current-details {
    flex: 1;
}

/* 미세먼지 정보 스타일 */
.dust-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--dark-tertiary);
    width: 100%;
}

.dust-item {
    text-align: center;
    background-color: var(--dark-tertiary);
    border-radius: var(--border-radius-small);
    padding: 0.8rem;
    transition: var(--transition);
}

.dust-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.dust-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.dust-label i {
    margin-right: 0.3rem;
}

.dust-value {
    font-size: 1.1rem;
    font-weight: 600;
}

.dust-value.good {
    color: #2ecc71;
}

.dust-value.moderate {
    color: #f1c40f;
}

.dust-value.bad {
    color: #e74c3c;
}

.dust-value.very-bad {
    color: #9b59b6;
}

/* 시간대별 차트 컨테이너를 전체 너비로 */
.hourly-chart-container {
    width: 100%;
    height: 220px;
    margin-bottom: 1.5rem;
}

/* 탭 컨테이너 마진 수정 */
.tab-container {
    margin: 1.5rem 0;
}

/* 모바일 반응형 수정 */
@media (max-width: 768px) {
    .card-row {
        flex-direction: column;
        text-align: center;
    }
    
    .current-icon-temp {
        justify-content: center;
    }
    
    .current-details {
        text-align: center;
    }
    
    .weather-details {
        justify-content: center;
    }
}

/* 강수확률 및 우산 알림 스타일 */
.rain-forecast {
    width: 220px;
    padding-left: 1rem;
    border-left: 1px solid var(--dark-tertiary);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.umbrella-alert {
    background-color: var(--dark-tertiary);
    border-radius: var(--border-radius-small);
    padding: 0.8rem;
    text-align: center;
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.umbrella-icon {
    font-size: 1.8rem;
    margin-bottom: 0.3rem;
}

.umbrella-text {
    font-size: 1.1rem;
    font-weight: 600;
}

.umbrella-alert.needed {
    background-color: rgba(52, 152, 219, 0.2);
    border: 1px solid rgba(52, 152, 219, 0.3);
}

.umbrella-alert.needed .umbrella-icon i {
    color: #3498db;
}

.umbrella-alert.not-needed {
    background-color: rgba(46, 204, 113, 0.1);
    border: 1px solid rgba(46, 204, 113, 0.2);
}

.umbrella-alert.not-needed .umbrella-icon i {
    color: #2ecc71;
}

.rain-hours {
    flex-grow: 1;
}

.rain-hours h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    font-weight: 500;
}

.rain-times {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.rain-time-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--dark-tertiary);
    padding: 0.6rem 0.8rem;
    border-radius: var(--border-radius-small);
    font-size: 0.9rem;
}

.rain-time-item.high {
    background-color: rgba(52, 152, 219, 0.2);
    border-left: 3px solid #3498db;
}

.rain-time {
    font-weight: 600;
}

.rain-probability {
    color: #3498db;
    font-weight: 700;
}

.no-rain-message {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-align: center;
    padding: 1rem 0;
}

.loading-small {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 0.5rem;
}

/* 모바일 반응형 수정 */
@media (max-width: 900px) {
    .card-row {
        flex-wrap: wrap;
    }
    
    .rain-forecast {
        width: 100%;
        margin-top: 1.5rem;
        padding-left: 0;
        padding-top: 1rem;
        border-left: none;
        border-top: 1px solid var(--dark-tertiary);
    }
    
    .umbrella-alert {
        flex-direction: row;
        justify-content: center;
    }
    
    .umbrella-icon {
        margin-bottom: 0;
        margin-right: 0.5rem;
    }
    
    .rain-times {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 0.5rem;
    }
}

/* 모바일 레이아웃 최적화 (600px 미만 화면) */
@media (max-width: 600px) {
    body {
      padding: 0.5rem;
    }
    
    .current-icon-temp {
      flex-direction: row;
      align-items: center;
      justify-content: center;
    }
    
    .card-content {
      padding: 1rem;
    }
    
    .card-row {
      flex-direction: column;
    }
    
    .current-details {
      width: 100%;
      margin-top: 1rem;
      text-align: center;
    }
    
    .rain-forecast {
      width: 100%;
      margin-top: 1rem;
      padding: 0;
      border-left: none;
      border-top: 1px solid var(--dark-tertiary);
      padding-top: 1rem;
    }
    
    .hourly-forecast {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
      padding: 0.5rem;
    }
    
    .hourly-forecast-items {
      min-width: 800px; /* 가로 스크롤 활성화 */
    }
    
    .dust-info {
      flex-direction: column;
      gap: 0.5rem;
    }
    
    .dust-item {
      width: 100%;
    }
    
    /* 버튼과 탭 영역 확대 - 터치 최적화 */
    .tab-btn {
      padding: 0.8rem 1rem;
      height: 3rem;
    }
    
    /* 차트 영역 조정 */
    .chart-container {
      height: 200px;
    }
  }

  /* 로딩 인디케이터 스타일 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin-bottom: 15px;
}

.loading-text {
    color: #fff;
    font-size: 1.1rem;
}

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

/* 날짜 표시 스타일 */
.current-date {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 0.3rem;
}