/* 공통 사이트 스타일 — Pretendard 폰트 + 정제된 디자인 토큰 */

/* Pretendard 폰트는 <head>의 <link>로 CDN 로드. 이 파일은 그 폰트를 적용. */

:root {
    --color-bg: #f6f7f9;
    --color-card: #ffffff;
    --color-border: #e7e9ed;
    --color-border-strong: #d4d8de;
    --color-text: #0f172a;
    --color-text-muted: #64748b;
    --color-text-light: #94a3b8;
    --color-blue: #2563eb;
    --color-blue-soft: #eff6ff;
    --color-accent-soft: #f0f9ff;
}

html {
    -webkit-text-size-adjust: 100%;
    text-rendering: optimizeLegibility;
}

body {
    font-family: 'Pretendard Variable', 'Pretendard', -apple-system,
        BlinkMacSystemFont, system-ui, 'Segoe UI', Roboto, 'Helvetica Neue',
        Arial, sans-serif;
    font-feature-settings: 'tnum', 'ss01';
    letter-spacing: -0.01em;
    background-color: var(--color-bg);
    color: var(--color-text);
}

/* 글꼴 무게: Pretendard Variable 기준 */
.font-light    { font-weight: 300; }
.font-normal   { font-weight: 400; }
.font-medium   { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold     { font-weight: 700; }

/* 카드 공통 (Tailwind 위에 살짝 톤만 보강) */
.card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 16px;
}

.card-hover:hover {
    border-color: #93c5fd;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04),
                0 4px 12px rgba(15, 23, 42, 0.06);
    transition: all 0.15s ease;
}

/* 버튼 */
.btn-primary {
    background: var(--color-blue);
    color: #fff;
    font-weight: 600;
    border-radius: 12px;
    transition: background 0.12s ease;
}
.btn-primary:hover { background: #1d4ed8; }

.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    transition: all 0.12s ease;
}
.btn-ghost:hover {
    background: #f8fafc;
    color: var(--color-text);
    border-color: var(--color-border-strong);
}

/* 검색 결과의 highlight (mark) */
mark {
    background: #dbeafe;
    color: #1e3a8a;
    padding: 0 2px;
    border-radius: 3px;
}

/* 차트 영역 그리드 보강 */
canvas {
    font-family: inherit !important;
}

/* === 헤더 드롭다운 (데스크톱) === */
.nav-dropdown {
    position: relative;
}
.nav-dropdown__panel {
    visibility: hidden;
    opacity: 0;
    transform: translateY(-4px);
    transition: visibility 0s linear 0.15s, opacity 0.15s ease, transform 0.15s ease;
    position: absolute;
    top: 100%;
    left: -8px;
    margin-top: 6px;
    min-width: 220px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.08);
    padding: 6px;
    z-index: 30;
}
.nav-dropdown:hover .nav-dropdown__panel,
.nav-dropdown:focus-within .nav-dropdown__panel {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0s;
}
.nav-dropdown__item {
    display: block;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--color-text);
    transition: background 0.12s ease, color 0.12s ease;
}
.nav-dropdown__item:hover {
    background: var(--color-blue-soft);
    color: var(--color-blue);
}

/* 데스크톱 ▾ 아이콘 */
.nav-caret {
    display: inline-block;
    font-size: 0.7em;
    margin-left: 2px;
    transform: translateY(-1px);
}

/* === Google AdSense 광고 슬롯 === */
.ad-slot {
    /* 활성화 전(ADSENSE_ENABLED=false): 숨김. 사용자에게 빈 공간 노출 X. */
    display: none;
    margin: 28px 0;
    text-align: center;
}
.ad-slot--active {
    /* ads.js가 활성화 시 클래스 추가 */
    display: block;
    background: #fafbfc;
    border-radius: 12px;
    padding: 8px 8px 12px;
    border: 1px solid var(--color-border);
    position: relative;
}
.ad-slot--active::before {
    content: "AD";
    display: block;
    font-size: 0.65rem;
    font-weight: 600;
    color: #94a3b8;
    letter-spacing: 0.1em;
    margin-bottom: 4px;
    text-align: left;
    padding-left: 4px;
}

/* === 모바일 펼침 (details) === */
.mobile-group > summary {
    list-style: none;
    cursor: pointer;
    padding: 0.5rem 0;
    color: #334155;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.mobile-group > summary::-webkit-details-marker { display: none; }
.mobile-group > summary::after {
    content: "▾";
    font-size: 0.75em;
    color: #94a3b8;
    transition: transform 0.15s ease;
}
.mobile-group[open] > summary::after {
    transform: rotate(180deg);
}
.mobile-group > .mobile-group__items {
    padding-left: 0.75rem;
    border-left: 2px solid var(--color-border);
    margin-left: 0.25rem;
    margin-bottom: 0.5rem;
}
.mobile-group > .mobile-group__items > a {
    display: block;
    padding: 0.5rem 0.5rem;
    color: #475569;
    border-radius: 6px;
}
.mobile-group > .mobile-group__items > a:hover {
    background: var(--color-blue-soft);
    color: var(--color-blue);
}
