/* 최저가 항공권 검색 스타일 - json-csv-converter 디자인 언어 차용 (indigo/violet 테마) */
.airsearch-tool {
    --tool-primary: #6366f1;
    --tool-bg: #eef2ff;
    --tool-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
}

/* ===== 히어로 ===== */
.airsearch-hero {
    background: var(--tool-gradient);
    border-radius: 16px;
    padding: 36px 32px;
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 28px;
}
.airsearch-hero::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 50%;
}
.airsearch-hero::after {
    content: '';
    position: absolute;
    bottom: -120px;
    left: -60px;
    width: 260px;
    height: 260px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 50%;
}
.airsearch-hero h1 {
    font-size: 28px;
    font-weight: 800;
    position: relative;
    z-index: 1;
    margin: 10px 0 6px;
}
.airsearch-hero p {
    opacity: 0.85;
    position: relative;
    z-index: 1;
    margin-bottom: 0;
}

/* ===== 에디터 카드 (검색 존 / 결과 영역) ===== */
.editor-card {
    background: #fff;
    border: 1px solid #e9ecef;
    border-radius: 14px;
    overflow: hidden;
}
.editor-card .card-body {
    padding: 20px;
}
[data-bs-theme="dark"] .editor-card {
    background: var(--bs-body-bg);
    border-color: var(--bs-border-color);
}

/* 테마 강조 (아이콘 / 배지 / 텍스트) */
.airsearch-tool .text-primary { color: var(--tool-primary) !important; }
.airsearch-tool .badge.bg-primary.bg-opacity-10 {
    background-color: var(--tool-bg) !important;
    color: var(--tool-primary) !important;
}

/* ===== 액션 버튼 ===== */
.btn-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 16px;
    border-radius: 9px;
    border: 1px solid #dee2e6;
    background: #fff;
    color: #495057;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}
.btn-action:hover {
    border-color: var(--tool-primary);
    color: var(--tool-primary);
    background: var(--tool-bg);
}
.btn-action-sm {
    padding: 6px 12px;
    font-size: 12.5px;
    border-radius: 8px;
}
.btn-action-primary {
    background: var(--tool-gradient);
    border: none;
    color: #fff;
}
/* CRITICAL: hover 시 그라데이션 유지 (Bootstrap 기본 hover 색 덮어쓰기) */
.btn-action-primary:hover {
    background: var(--tool-gradient);
    border: none;
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(99, 102, 241, 0.3);
}
[data-bs-theme="dark"] .btn-action {
    background: var(--bs-tertiary-bg);
    border-color: var(--bs-border-color);
    color: var(--bs-body-color);
}

/* ===== 서포트 카드 (SEO / FAQ) ===== */
.support-card {
    background: #fff;
    border: 1px solid #e9ecef;
    border-radius: 14px;
    overflow: hidden;
}
.support-card .card-hd {
    padding: 14px 18px;
    font-weight: 700;
    font-size: 15px;
    border-bottom: 1px solid #f1f3f5;
}
.support-card .card-bd {
    padding: 18px;
}
.support-subtitle {
    font-size: 15px;
    font-weight: 700;
    color: #343a40;
    margin: 18px 0 10px;
}
[data-bs-theme="dark"] .support-card {
    background: var(--bs-body-bg);
    border-color: var(--bs-border-color);
}
[data-bs-theme="dark"] .support-card .card-hd {
    border-bottom-color: var(--bs-border-color);
}
[data-bs-theme="dark"] .support-subtitle {
    color: var(--bs-body-color);
}

/* 아코디언 (테마 강조) */
.airsearch-tool .accordion-button:not(.collapsed) {
    background-color: var(--tool-bg);
    color: var(--tool-primary);
    box-shadow: none;
}
.airsearch-tool .accordion-button:focus {
    box-shadow: none;
    border-color: var(--tool-primary);
}

/* ===== 공항 자동완성 (기능 유지) ===== */
.airport-input {
    padding-right: 2.5rem;
}
.airport-autocomplete-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 1050;
    background: var(--bs-body-bg);
    border: 1px solid var(--bs-border-color);
    border-top: none;
    border-radius: 0 0 0.75rem 0.75rem;
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,.1);
    max-height: 300px;
    overflow-y: auto;
}
.airport-autocomplete-item {
    padding: 0.625rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: background-color 0.15s;
}
.airport-autocomplete-item:hover,
.airport-autocomplete-item.active {
    background-color: var(--tool-bg);
}
.airport-autocomplete-item .airport-code {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--tool-primary);
    min-width: 40px;
}
.airport-autocomplete-item .airport-name {
    font-size: 0.875rem;
}
.airport-autocomplete-item .airport-city {
    font-size: 0.75rem;
    color: var(--bs-secondary-color);
}

/* 폼 컨트롤 포커스 (테마 색) */
.airsearch-tool .form-control:focus,
.airsearch-tool .form-select:focus {
    border-color: var(--tool-primary);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.15);
}

/* ===== 교환 버튼 (기능 유지) ===== */
#btnSwap {
    transition: transform 0.3s;
}
#btnSwap:hover {
    transform: rotate(180deg);
}

/* ===== 인기 노선 카드 ===== */
.popular-route-card {
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}
.popular-route-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1.5rem rgba(99, 102, 241, 0.18) !important;
}

/* ===== 최저가 하이라이트 카드 ===== */
.best-price-card {
    background: linear-gradient(135deg, #fff8e1 0%, #fff3cd 100%);
    border-left: 4px solid var(--bs-warning) !important;
}
[data-bs-theme="dark"] .best-price-card {
    background: linear-gradient(135deg, #3d3200 0%, #4a3c00 100%);
}

/* ===== 항공편 카드 ===== */
.flight-card {
    transition: transform 0.2s, box-shadow 0.2s;
}
.flight-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 0.5rem 1.5rem rgba(99, 102, 241, 0.15) !important;
}

/* ===== 노선 시각화 ===== */
.flight-route-visual {
    position: relative;
}
.flight-line {
    height: 2px;
    background: var(--bs-border-color);
    position: relative;
    margin: 4px 0;
}
.flight-line::before,
.flight-line::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    transform: translateY(-50%);
}
.flight-line::before {
    left: 0;
    background: var(--tool-primary);
}
.flight-line::after {
    right: 0;
    background: var(--tool-primary);
}
.flight-line-stop {
    background: repeating-linear-gradient(
        90deg,
        var(--bs-border-color) 0,
        var(--bs-border-color) 6px,
        transparent 6px,
        transparent 10px
    );
}
.flight-stops-text {
    color: var(--bs-warning-text-emphasis);
}
.flight-stops-text.nonstop {
    color: var(--bs-success);
}

/* ===== 항공사 로고 ===== */
.airline-logo {
    border-radius: 4px;
    object-fit: contain;
    background: #fff;
}

/* ===== 승객 드롭다운 ===== */
.pax-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    font-size: 1.1rem;
    line-height: 1;
}

/* ===== 상세 모달 - 타임라인 ===== */
.flight-timeline {
    position: relative;
    padding-left: 2rem;
}
.flight-timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0.5rem;
    bottom: 0.5rem;
    width: 2px;
    background: var(--bs-border-color);
}
.flight-timeline-item {
    position: relative;
    padding-bottom: 1.5rem;
}
.flight-timeline-item:last-child {
    padding-bottom: 0;
}
.flight-timeline-item::before {
    content: '';
    position: absolute;
    left: -1.625rem;
    top: 0.35rem;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--tool-primary);
    border: 2px solid var(--bs-body-bg);
}
.flight-timeline-item.layover {
    padding: 0.5rem 0;
}
.flight-timeline-item.layover::before {
    background: var(--bs-warning);
    width: 8px;
    height: 8px;
    left: -1.55rem;
    top: 0.55rem;
}

/* ===== 가격 알림 모달 - 탭 ===== */
#alertModal .nav-pills .nav-link {
    border: 2px solid var(--bs-border-color);
    color: var(--bs-body-color);
    padding: 0.75rem 1rem;
    transition: all 0.2s;
}
#alertModal .nav-pills .nav-link:hover {
    border-color: var(--bs-warning);
    background-color: var(--bs-warning-bg-subtle);
}
#alertModal .nav-pills .nav-link.active {
    border-color: var(--bs-warning);
    background-color: var(--bs-warning);
    color: #000;
}
#alertModal .nav-pills .nav-link.active .opacity-75 {
    opacity: 0.85 !important;
}

/* 가격 알림 - 빠른 가격 버튼 */
.quick-price-btn:hover {
    background-color: var(--bs-warning-bg-subtle);
    border-color: var(--bs-warning);
}

/* ===== 가격 캘린더 (기능 유지) ===== */
.price-calendar {
    border: 1px solid var(--bs-border-color);
    border-radius: 0.75rem;
    overflow: hidden;
}
.cal-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    background: var(--tool-primary);
    color: #fff;
    text-align: center;
    font-weight: 600;
    font-size: 0.8rem;
}
.cal-header > div {
    padding: 0.5rem 0;
}
.cal-header > div:first-child {
    color: rgba(255,255,255,.7);
}
.cal-header > div:last-child {
    color: rgba(255,255,255,.7);
}
.cal-body {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--bs-border-color);
}
.cal-cell {
    background: var(--bs-body-bg);
    text-align: center;
    padding: 0.5rem 0.25rem;
    min-height: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.15s, transform 0.15s;
    position: relative;
}
.cal-cell:hover:not(.cal-empty) {
    transform: scale(1.05);
    z-index: 2;
    box-shadow: 0 2px 8px rgba(0,0,0,.15);
}
.cal-cell.cal-empty {
    cursor: default;
    background: var(--bs-tertiary-bg);
}
.cal-cell.cal-selected {
    outline: 2px solid var(--tool-primary);
    outline-offset: -2px;
    z-index: 3;
}
.cal-day {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--bs-body-color);
    margin-bottom: 2px;
}
.cal-price {
    font-size: 0.75rem;
    font-weight: 700;
}

/* 가격 수준별 색상 */
.cal-cell.cal-low {
    background: rgba(25, 135, 84, 0.08);
}
.cal-cell.cal-low .cal-price {
    color: var(--bs-success);
}
.cal-cell.cal-mid {
    background: rgba(255, 193, 7, 0.08);
}
.cal-cell.cal-mid .cal-price {
    color: var(--bs-warning-text-emphasis);
}
.cal-cell.cal-high {
    background: rgba(220, 53, 69, 0.08);
}
.cal-cell.cal-high .cal-price {
    color: var(--bs-danger);
}
.cal-cell.cal-none .cal-price {
    color: var(--bs-secondary-color);
}
.cal-cell.cal-best {
    background: rgba(25, 135, 84, 0.18);
    border: 2px solid var(--bs-success);
    border-radius: 0.5rem;
}
.cal-cell.cal-best .cal-day::after {
    content: '★';
    margin-left: 2px;
    color: var(--bs-warning);
    font-size: 0.65rem;
}

/* 캘린더 범례 */
.cal-legend {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 3px;
    margin-right: 3px;
    vertical-align: middle;
}
.cal-legend-low {
    background: rgba(25, 135, 84, 0.3);
    border: 1px solid var(--bs-success);
}
.cal-legend-mid {
    background: rgba(255, 193, 7, 0.3);
    border: 1px solid var(--bs-warning);
}
.cal-legend-high {
    background: rgba(220, 53, 69, 0.3);
    border: 1px solid var(--bs-danger);
}
.cal-legend-none {
    background: var(--bs-tertiary-bg);
    border: 1px solid var(--bs-border-color);
}

/* ===== 월별 최저가 비교 차트 (Chart.js) ===== */
#monthlyPriceChart {
    cursor: pointer;
}

/* 체류 기간 프리셋 버튼 */
.stay-preset-btn.active {
    background-color: var(--tool-primary);
    color: #fff;
    border-color: var(--tool-primary);
}

/* 가격 추이 차트 */
#priceChart {
    max-height: 250px;
}

/* ===== 최저가 TOP 리스트 강조 행 ===== */
.top-rank-best {
    background-color: var(--tool-bg);
}
[data-bs-theme="dark"] .top-rank-best {
    background-color: rgba(99, 102, 241, 0.12);
}

/* ===== 반응형 ===== */
@media (max-width: 767.98px) {
    .airsearch-hero { padding: 28px 20px; border-radius: 12px; }
    .airsearch-hero h1 { font-size: 22px; }
    .editor-card .card-body { padding: 16px; }
    .flight-card .row {
        gap: 0.5rem;
    }
    .flight-card .col-md-2.text-md-end {
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-top: 1px solid var(--bs-border-color);
        padding-top: 0.75rem;
        margin-top: 0.25rem;
    }
    .return-segment {
        border-top: 1px dashed var(--bs-border-color);
        padding-top: 0.75rem;
        margin-top: 0.25rem;
    }
    #btnSwap {
        transform: rotate(90deg);
    }
    #btnSwap:hover {
        transform: rotate(270deg);
    }
    .cal-cell {
        min-height: 48px;
        padding: 0.35rem 0.15rem;
    }
    .cal-day {
        font-size: 0.7rem;
    }
    .cal-price {
        font-size: 0.65rem;
    }
    .cal-header {
        font-size: 0.7rem;
    }
}

/* ===== 다크모드 ===== */
[data-bs-theme="dark"] .airport-autocomplete-list {
    background: var(--bs-dark);
}
[data-bs-theme="dark"] .airline-logo {
    background: rgba(255,255,255,.1);
}
[data-bs-theme="dark"] .flight-timeline-item::before {
    border-color: var(--bs-dark);
}
[data-bs-theme="dark"] .cal-cell.cal-low {
    background: rgba(25, 135, 84, 0.15);
}
[data-bs-theme="dark"] .cal-cell.cal-mid {
    background: rgba(255, 193, 7, 0.12);
}
[data-bs-theme="dark"] .cal-cell.cal-high {
    background: rgba(220, 53, 69, 0.15);
}
[data-bs-theme="dark"] .cal-cell.cal-best {
    background: rgba(25, 135, 84, 0.25);
}
[data-bs-theme="dark"] .cal-cell.cal-empty {
    background: rgba(255,255,255,.03);
}