/* ---------- ヘッダー ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-line);
    transition: background-color var(--transition), box-shadow var(--transition);
    height: var(--header-height);
}

.site-header.is-scrolled {
    box-shadow: 0 1px 0 var(--color-line);
}

.site-header__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 1.5rem;
}

.site-logo__img {
    height: 80px;
    width: auto;
}

/* ナビゲーション */
.nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-list a {
    color: var(--color-navy);
    font-size: 0.85rem;
    font-weight: 500;
    position: relative;
    padding: 0.25rem 0;
    letter-spacing: 0.02em;
}

.nav-list a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-green);
    transition: width var(--transition);
}

.nav-list a:hover {
    color: var(--color-green);
    text-decoration: none;
}

.nav-list a:hover::after,
.nav-list a.is-active::after {
    width: 100%;
}

.nav-list a.is-active {
    color: var(--color-green);
}

.nav-cta {
    background: var(--color-green);
    color: var(--color-white) !important;
    padding: 0.5rem 1.25rem !important;
    font-weight: 600 !important;
    transition: background var(--transition), transform var(--transition) !important;
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    background: var(--color-green-dark);
    color: var(--color-white) !important;
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(0, 184, 86, 0.3);
}

.nav-cta:active {
    transform: scale(0.98) translateY(0) !important;
    box-shadow: none !important;
}

/* SP用コート背景・SNS（PC非表示） */
.sp-nav-court,
.sp-nav-sns {
    display: none;
}

/* ハンバーガー */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
    padding: 4px;
}

.hamburger__line {
    display: block;
    width: 100%;
    height: 1px;
    background: var(--color-navy);
    transition: transform var(--transition), opacity var(--transition);
}

.hamburger.is-open .hamburger__line {
    background: var(--color-white);
}

.hamburger.is-open .hamburger__line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.hamburger.is-open .hamburger__line:nth-child(2) {
    opacity: 0;
}

.hamburger.is-open .hamburger__line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}