/* ── 우측 CTA 레일 + 본문 레이아웃 (index.html body.ktm-has-cta-rail) ── */
:root {
    /* 네이버 시그니처 그린 (booking.naver.com 브랜드) */
    --ktm-naver-green: #03c75a;
    --ktm-naver-green-hover: #02b351;
    --ktm-naver-green-deep: #029246;
    --ktm-cta-panel-width: 92px;
    --ktm-cta-rail-width: calc(var(--ktm-cta-panel-width) + 16px);
    --ktm-content-inset-x: clamp(20px, 3.5vw, 56px);
}

@media (max-width: 1024px) {
    :root {
        --ktm-cta-panel-width: 84px;
    }
}

@media (max-width: 768px) {
    :root {
        --ktm-cta-panel-width: 76px;
        --ktm-cta-rail-width: 0px;
        --ktm-cta-bottom-safe: calc(92px + env(safe-area-inset-bottom, 0px));
    }

    body.ktm-has-cta-rail .floating-cta-panel {
        bottom: max(12px, env(safe-area-inset-bottom, 0px));
        right: max(8px, env(safe-area-inset-right, 0px));
        max-height: calc(100vh - 120px - env(safe-area-inset-bottom, 0px));
        overflow-y: auto;
    }

    body.ktm-has-cta-rail .hero-cta,
    body.ktm-has-cta-rail .section-cta-actions {
        margin-bottom: env(safe-area-inset-bottom, 0px);
    }
}

@media (max-width: 480px) {
    :root {
        --ktm-cta-panel-width: 68px;
        --ktm-cta-bottom-safe: 84px;
    }
}

/* 데스크톱: 본문은 CTA 레일 왼쪽만 사용 */
@media (min-width: 769px) {
    body.ktm-has-cta-rail::after {
        content: '';
        position: fixed;
        top: 0;
        right: 0;
        width: var(--ktm-cta-rail-width);
        height: 100%;
        background: linear-gradient(180deg, rgba(14, 14, 18, 0.98) 0%, rgba(8, 8, 12, 0.99) 100%);
        border-left: 1px solid rgba(255, 255, 255, 0.08);
        box-shadow: -8px 0 28px rgba(0, 0, 0, 0.35);
        pointer-events: none;
        z-index: 10040;
    }

    body.ktm-has-cta-rail.light-mode::after {
        background: linear-gradient(180deg, #fafafa 0%, #f0f0f2 100%);
        border-left-color: rgba(0, 0, 0, 0.08);
        box-shadow: -6px 0 24px rgba(0, 0, 0, 0.06);
    }

    body.ktm-has-cta-rail {
        padding-right: var(--ktm-cta-rail-width);
    }

    body.ktm-has-cta-rail #header {
        width: calc(100% - var(--ktm-cta-rail-width));
        padding-left: var(--ktm-content-inset-x);
        padding-right: var(--ktm-content-inset-x);
        box-sizing: border-box;
    }

    body.ktm-has-cta-rail #header nav {
        max-width: min(1600px, 100%);
    }

    body.ktm-has-cta-rail .hero-container,
    body.ktm-has-cta-rail .section-container,
    body.ktm-has-cta-rail .footer-content {
        max-width: min(1400px, calc(100vw - var(--ktm-cta-rail-width) - var(--ktm-content-inset-x) * 2));
        padding-left: var(--ktm-content-inset-x);
        padding-right: var(--ktm-content-inset-x);
        margin-left: auto;
        margin-right: auto;
        box-sizing: border-box;
    }

    body.ktm-has-cta-rail .hero-container {
        max-width: min(1600px, calc(100vw - var(--ktm-cta-rail-width) - var(--ktm-content-inset-x) * 2));
    }

    body.ktm-has-cta-rail .students-slider-wrapper,
    body.ktm-has-cta-rail .ai-journey-container {
        max-width: 100%;
        box-sizing: border-box;
    }

    /* CTA 레일과 겹치지 않도록 타이포·여백 축소 */
    body.ktm-has-cta-rail .hero-title {
        font-size: clamp(2.6rem, 4.2vw, 4.35rem);
        line-height: 1.12;
    }

    body.ktm-has-cta-rail .hero-hi-touch-lede,
    body.ktm-has-cta-rail .hero-description {
        font-size: clamp(1rem, 1.35vw, 1.2rem);
    }

    body.ktm-has-cta-rail .section-title {
        font-size: clamp(1.85rem, 3vw, 3.25rem);
        padding: 14px 24px;
        white-space: normal;
        text-align: center;
    }

    body.ktm-has-cta-rail .section-subtitle,
    body.ktm-has-cta-rail .section-description {
        font-size: clamp(0.95rem, 1.2vw, 1.1rem);
    }

    body.ktm-has-cta-rail .nav-menu {
        gap: clamp(24px, 2.5vw, 44px);
    }

    body.ktm-has-cta-rail .nav-menu a {
        font-size: clamp(0.88rem, 1vw, 0.98rem);
    }

    body.ktm-has-cta-rail .logo {
        font-size: clamp(1.35rem, 1.8vw, 1.85rem);
    }
}

@media (max-width: 768px) {
    body.ktm-has-cta-rail {
        padding-right: 0;
        padding-bottom: var(--ktm-cta-bottom-safe, 88px);
    }
}

.ktm-theme-toggle {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 10060;
    background: linear-gradient(135deg, #5b4cff, #00d4ff);
    color: #fff;
    border: none;
    border-radius: 50%;
    padding: 12px;
    cursor: pointer;
    font-size: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    .ktm-theme-toggle {
        right: 16px;
        top: 16px;
        width: 44px;
        height: 44px;
        font-size: 18px;
    }
}

body.light-mode .ktm-theme-toggle {
    background: linear-gradient(135deg, #333, #666);
}

/* 우측 고정 플로팅 CTA — header nav 전역 규칙과 분리 (aside 사용) */
.floating-cta-panel {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10050;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    width: var(--ktm-cta-panel-width);
    min-width: var(--ktm-cta-panel-width);
    max-width: var(--ktm-cta-panel-width);
    margin: 0;
    padding: 0;
    list-style: none;
    box-sizing: border-box;
    border: none;
    border-radius: 10px 0 0 10px;
    overflow: hidden;
    box-shadow: -4px 4px 20px rgba(0, 0, 0, 0.14);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans KR', sans-serif;
    background: #fff;
}

.floating-cta-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    min-width: 100%;
    max-width: 100%;
    min-height: 72px;
    padding: 12px 6px;
    margin: 0;
    text-decoration: none;
    text-align: center;
    box-sizing: border-box;
    flex: 0 0 auto;
    border: none;
    border-bottom: 1px solid #e5e5e5;
    border-radius: 0;
    transition: background-color 0.2s ease;
}

.floating-cta-item:last-child {
    border-bottom: none;
}

.floating-cta-item--primary {
    background: #ff8a00;
    border-bottom-color: rgba(255, 255, 255, 0.28);
    min-height: 88px;
    padding: 14px 6px;
}

.floating-cta-item--primary:hover {
    background: #e67d00;
}

.floating-cta-item--light {
    background: #fff;
    color: #222;
}

.floating-cta-item--light:hover {
    background: #f5f5f7;
}

.floating-cta-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

.floating-cta-icon svg {
    display: block;
    width: 24px;
    height: 24px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.floating-cta-item--primary .floating-cta-icon {
    color: #fff;
}

.floating-cta-item--light .floating-cta-icon {
    color: #1a1a1a;
}

.floating-cta-label {
    display: block;
    width: 100%;
    font-size: 11px;
    font-weight: 600;
    line-height: 1.35;
    letter-spacing: -0.03em;
    word-break: keep-all;
    overflow-wrap: normal;
}

.floating-cta-item--primary .floating-cta-label {
    color: #fff;
    font-weight: 700;
}

.floating-cta-booking {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background: var(--ktm-naver-green);
    flex-shrink: 0;
}

/* 네이버 예약 — 패널 좌측·상단 모서리까지 녹색이 꽉 차도록 */
.floating-cta-booking .floating-cta-item--primary {
    width: 100%;
    margin: 0;
    padding: 14px 6px;
    border: none;
    border-radius: 0;
    background: var(--ktm-naver-green);
    border-bottom: 1px solid rgba(255, 255, 255, 0.22);
}

.floating-cta-booking .floating-cta-item--primary:hover {
    background: var(--ktm-naver-green-hover);
}

.floating-cta-booking-toggle {
    cursor: pointer;
    font: inherit;
    position: relative;
    width: 100%;
    margin: 0;
    border-radius: 0;
}

.floating-cta-chevron {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    margin-top: 2px;
    color: rgba(255, 255, 255, 0.92);
    transition: transform 0.2s ease;
}

.floating-cta-chevron svg {
    display: block;
    width: 14px;
    height: 14px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.floating-cta-booking.is-open .floating-cta-chevron {
    transform: rotate(180deg);
}

.floating-cta-booking-menu {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    pointer-events: none;
    visibility: hidden;
    transition: max-height 0.25s ease, visibility 0.2s ease;
    background: var(--ktm-naver-green-deep);
    box-sizing: border-box;
}

.floating-cta-booking.is-open .floating-cta-booking-menu {
    max-height: 156px;
    pointer-events: auto;
    visibility: visible;
}

.floating-cta-subitem {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 44px;
    padding: 10px 6px;
    margin: 0;
    text-decoration: none;
    text-align: center;
    box-sizing: border-box;
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.35);
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: -0.03em;
    transition: background-color 0.2s ease;
}

.floating-cta-subitem:hover {
    background: rgba(255, 255, 255, 0.28);
}

.floating-cta-item--light .floating-cta-label {
    color: #333;
}

.floating-cta-item--phone .floating-cta-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.25;
}

@media (max-width: 1024px) {
    .floating-cta-item {
        min-height: 68px;
        padding: 10px 5px;
    }

    .floating-cta-item--primary {
        min-height: 82px;
    }

    .floating-cta-label {
        font-size: 10px;
    }

    .floating-cta-item--phone .floating-cta-label {
        font-size: 9px;
    }
}

@media (max-width: 768px) {
    .floating-cta-panel {
        top: auto;
        bottom: 72px;
        transform: none;
    }

    .floating-cta-item {
        min-height: 64px;
        gap: 6px;
    }

    .floating-cta-item--primary {
        min-height: 76px;
    }
}

@media (max-width: 480px) {
    .floating-cta-panel {
        bottom: 64px;
    }

    .floating-cta-item {
        min-height: 58px;
        padding: 8px 4px;
    }

    .floating-cta-item--primary {
        min-height: 70px;
    }

    .floating-cta-icon svg {
        width: 20px;
        height: 20px;
    }

    .floating-cta-label {
        font-size: 9px;
    }

    .floating-cta-item--phone .floating-cta-label {
        font-size: 8px;
    }
}

body.light-mode .floating-cta-item--light {
    background: #fff;
}

body.light-mode .floating-cta-item--light:hover {
    background: #f5f5f7;
}