:root {
    /* 색상 변수 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --green: #28a745;
    --red: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
    
    /* 크기 변수 */
    --font-xs: clamp(10px, 1.2cqw, 11px);
    --font-sm: clamp(11px, 1.6cqw, 13px);
    --font-md: clamp(11px, 1.4cqw, 15px);
    --font-lg: clamp(20px, 2cqw, 28px);
    --font-toggle: clamp(10px, 1.5cqw, 14px);
    --padding-sm: clamp(8px, 1.2cqw, 10px);
    --padding-md: clamp(8px, 1.3cqw, 10px) clamp(10px, 1.8cqw, 14px);
    --icon-size: clamp(44px, 4.5cqw, 60px);
    --toggle-width: clamp(50px, 7cqw, 60px);
    --toggle-height: clamp(26px, 4cqw, 32px);
    --gap-sm: clamp(6px, 1cqw, 8px);
    --gap-md: clamp(12px, 1.5cqw, 16px);
    --spacing-xs: clamp(1px, 0.2cqw, 2px);
    --spacing-sm: clamp(1px, 0.3cqw, 2px);
    --spacing-md: clamp(8px, 1.5cqw, 12px);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #212529;
        --bg-secondary: #343a40;
        --bg-tertiary: #495057;
        --text-primary: #f8f9fa;
        --text-secondary: #adb5bd;
        --border-color: #495057;
    }
}

/* Container Query로 시장 개요 반응형 제어 */
.board-container {
    container-type: inline-size;
    margin: 0 auto;
}

/* 상태 표시 바 */
.status-bar {
    background-color: var(--bg-secondary);
    border-radius: 6px;
    padding: var(--padding-md);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-md);
    user-select: none;
}

/* 상태 바 상단 영역 (업데이트 시간과 토글 스위치) */
.status-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--gap-md);
}

.last-update {
    font-size: var(--font-sm);
    font-weight: 600;
    padding: 0 var(--padding-sm);
    border-radius: 6px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    height: var(--toggle-height);
}

/* 컴팩트 지수 표시 - 반응형 그리드 */
.compact-indices {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--gap-sm);
}

/* 좁은 화면에서 3열 2행으로 변경 */
.compact-indices.cols-3 { 
    grid-template-columns: repeat(3, 1fr); 
}

.compact-indices.cols-2 { 
    grid-template-columns: repeat(2, 1fr); 
}

/* 컴팩트 카드 */
.compact-card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: var(--padding-sm);
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    min-width: 0;
}

.compact-icon {
    flex-shrink: 0;
    width: var(--icon-size);
    height: var(--icon-size);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-md);
    font-weight: bold;
    color: white;
}

/* 공포탐욕지수 아이콘만 더 큰 폰트 사이즈 */
:root {
    --font-feargreed: clamp(26px, 3cqw, 32px); /* 공포탐욕지수 전용 */
}

.compact-icon[class*="icon-feargreed"],
.compact-card[data-type="fear-greed"] .compact-icon { 
    font-size: var(--font-feargreed); /* --font-lg 대신 사용 */
}

.compact-content {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.compact-name {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.compact-value {
    font-size: var(--font-md);
    font-weight: bold;
    margin-bottom: var(--spacing-xs);
    line-height: 1.2;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.compact-change {
    font-size: var(--font-xs);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 2px;
}

/* 색상 상태 */
.change-positive { 
    color: var(--green); 
}

.change-negative { 
    color: var(--red); 
}

.change-neutral { 
    color: var(--text-secondary); 
}

/* 아이콘 색상 */
.icon-sp500 { background-color: #FF4757; }
.icon-nasdaq100 { background-color: #3742FA; }
.icon-dow { background-color: #2ED573; }
.icon-russell { background-color: #FF6B35; }
.icon-vix { background-color: #8B5CF6; }

/* 공포탐욕지수 단계별 배경색 */
.icon-feargreed-extreme-fear { background-color: #8B0000; }
.icon-feargreed-fear { background-color: #DC143C; }
.icon-feargreed-neutral { background-color: #696969; }
.icon-feargreed-greed { background-color: #4169E1; }
.icon-feargreed-extreme-greed { background-color: #006400; }
.icon-feargreed-error { background-color: #B22222; }

/* 토글 스위치 */
.toggle-switch {
    position: relative;
    width: var(--toggle-width);
    height: var(--toggle-height);
    background: #e0e0e0;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    flex-shrink: 0;
}

.toggle-switch.active { 
    background: #007AFF; 
}

.toggle-slider {
    position: absolute;
    top: 2px;
    left: 2px;
    width: calc(var(--toggle-height) - 4px);
    height: calc(var(--toggle-height) - 4px);
    background: white;
    border-radius: 4px;
    transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-toggle);
}

.toggle-switch.active .toggle-slider {
    transform: translateX(calc(var(--toggle-width) - var(--toggle-height)));
    background: #1c1c1e;
}

@media (prefers-color-scheme: dark) {
    .toggle-switch { 
        background: #4a4a4a; 
    }
}

/* === 새로 추가된 상태 스타일 === */

/* 로딩 플레이스홀더 */
.loading-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-md);
    padding: var(--padding-md);
    color: var(--text-secondary);
    font-size: var(--font-sm);
    grid-column: 1 / -1;
    min-height: 60px;
}

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--info);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    flex-shrink: 0;
}

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

/* 빈 상태 */
.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--padding-md);
    color: var(--text-secondary);
    font-size: var(--font-sm);
    font-style: italic;
    grid-column: 1 / -1;
    min-height: 60px;
}

/* 에러 상태 */
.error-state {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--padding-md);
    color: var(--red);
    font-size: var(--font-sm);
    font-weight: 600;
    background-color: rgba(220, 53, 69, 0.1);
    border: 1px solid rgba(220, 53, 69, 0.3);
    border-radius: 6px;
    grid-column: 1 / -1;
    min-height: 60px;
}

/* 반응형 상태 표시 개선 */
@container (max-width: 600px) {
    .loading-placeholder,
    .empty-state,
    .error-state {
        font-size: var(--font-xs);
        padding: var(--padding-sm);
        min-height: 50px;
    }
    
    .loading-spinner {
        width: 20px;
        height: 20px;
        border-width: 2px;
    }
}

/* 애니메이션 개선 */
.compact-card {
    transition: all 0.2s ease-in-out;
}

.compact-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

@media (prefers-color-scheme: dark) {
    .compact-card:hover {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }
    
    .error-state {
        background-color: rgba(220, 53, 69, 0.2);
        border-color: rgba(220, 53, 69, 0.4);
    }
}

/* 접근성 개선 */
.toggle-switch:focus {
    outline: 2px solid var(--info);
    outline-offset: 2px;
}

.toggle-switch:focus:not(:focus-visible) {
    outline: none;
}

/* 고대비 모드 지원 */
@media (prefers-contrast: high) {
    .compact-card {
        border-width: 2px;
    }
    
    .toggle-switch {
        border: 2px solid var(--border-color);
    }
    
    .last-update {
        border-width: 2px;
    }
}