/*--------------------------------------------------------------
# Header & Navigation
--------------------------------------------------------------*/

/* === Site Header === */
.site-header {
    background: transparent;
    position: relative;
    z-index: var(--z-modal);
}

/* === Top Navigation (Desktop) === */
.top-navigation {
    background: var(--color-white);
    border-bottom: 2px solid var(--color-primary-gold);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-modal);
    box-shadow: var(--shadow-medium);
    display: block; /* デフォルトで表示 */
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--space-lg);
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* === Logo === */
.nav-logo .logo-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--text-primary);
}

.nav-logo .logo-circle {
    width: 50px;
    height: 50px;
    /* background: var(--gradient-gold); */
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    /* box-shadow: var(--shadow-glow-gold); */
}

.nav-logo .logo-text {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-black);
    color: var(--color-black);
}

.nav-logo .logo-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.logo-site-name .site-name-main {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--text-accent);
}

.logo-site-name .site-name-sub {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* === Navigation Menu === */
.top-nav-menu {
    display: flex;
    list-style: none;
    gap: 0;
    margin: 0;
    padding: 0;
}

.top-nav-menu li {
    flex: 0 0 auto;
    border-right: 1px solid rgba(180, 156, 71, 0.3);
    min-width: auto;
}

.top-nav-menu li:last-child {
    border-right: none;
}

.top-nav-menu a {
    display: block;
    padding: var(--space-lg) var(--space-xl);
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    text-align: center;
    transition: var(--transition-normal);
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    text-decoration: none;
}

.top-nav-menu a:hover {
    background: rgba(255, 215, 0, 0.1);
    color: var(--text-accent);
    border-bottom-color: var(--color-primary-gold);
}

.top-nav-menu span {
    display: block;
    font-size: var(--font-size-xs);
    margin-top: 3px;
    opacity: 0.8;
}

/* === Mobile Header (hidden by default) === */
.mobile-header {
    display: none; /* デフォルトで非表示 */
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--color-white);
    z-index: var(--z-modal);
    padding: var(--space-md) 0;
    border-bottom: 2px solid var(--color-primary-gold);
    box-shadow: var(--shadow-medium);
}

.mobile-header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--space-lg);
}

.mobile-site-title a {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--text-primary);
    text-decoration: none;
}

.mobile-site-title .logo-circle {
    width: 40px;
    height: 40px;
    /* background: var(--gradient-gold);
    border-radius: var(--radius-full); */
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-site-title .logo-text {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-black);
    color: var(--color-black);
}

.mobile-site-title .logo-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.mobile-site-title .site-main-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-accent);
}

.mobile-site-title .site-sub-name {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* === Mobile Menu Toggle === */
.mobile-menu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    position: relative;
    width: 30px;
    height: 30px;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--color-primary-pink);
    position: absolute;
    transition: var(--transition-normal);
}

.mobile-menu-toggle span:nth-child(1) { 
    top: 8px; 
}

.mobile-menu-toggle span:nth-child(2) { 
    top: 14px; 
}

.mobile-menu-toggle span:nth-child(3) { 
    top: 20px; 
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg);
    top: 14px;
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg);
    top: 14px;
}
.mobile-menu-toggle:focus {
    outline: none;
}

/* === Mobile Menu === */
.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-white);
    z-index: var(--z-overlay);
    border-bottom: 1px solid var(--color-primary-gold);
    box-shadow: var(--shadow-medium);
}

.mobile-menu.active {
    display: block;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-menu ul,
.mobile-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-menu li {
    border-bottom: 1px solid rgba(180, 156, 71, 0.2);
}

.mobile-menu li:last-child {
    border-bottom: none;
}

.mobile-menu a {
    display: block;
    padding: var(--space-lg);
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: var(--transition-normal);
    font-size: var(--font-size-base);
}

.mobile-menu a:hover,
.mobile-menu a:focus {
    background: rgba(255, 215, 0, 0.1);
    color: var(--text-accent);
    transform: translateX(5px);
}

/* === Header Content (hidden in most cases) === */
.header-content {
    display: none;
}

/* === Header Contact Info === */
.header-contact {
    display: none; /* 必要に応じて表示 */
}

/* === Logo Glow Animation === */
/* @keyframes logoGlow {
    0%, 100% { 
        box-shadow: var(--shadow-glow-gold);
        transform: scale(1);
    }
    50% { 
        box-shadow: 0 0 30px rgba(255, 215, 0, 0.6);
        transform: scale(1.05);
    }
} */

.nav-logo .logo-circle {
    /* animation: logoGlow 3s ease-in-out infinite; */
}

/* === Responsive Design === */

/* Large screens - keep desktop nav responsive */
@media screen and (max-width: 1200px) {
    .top-nav-menu a {
        padding: var(--space-md) var(--space-lg);
        font-size: clamp(12px, 1.2vw, 14px);
    }
    
    .top-nav-menu span {
        font-size: clamp(10px, 1vw, 12px);
    }
}

@media screen and (max-width: 1000px) {
    .top-nav-menu a {
        padding: var(--space-md) var(--space-md);
        font-size: clamp(11px, 1.1vw, 13px);
    }
    
    .top-nav-menu span {
        font-size: clamp(9px, 0.9vw, 11px);
    }
}

/* Only apply text truncation on very narrow screens */
@media screen and (max-width: 900px) {
    .top-nav-menu li {
        min-width: 90px;
    }
    
    .top-nav-menu a {
        overflow: hidden;
        text-overflow: ellipsis;
        padding: var(--space-sm) var(--space-md);
        font-size: clamp(10px, 1vw, 12px);
    }
    
    .top-nav-menu span {
        font-size: clamp(8px, 0.8vw, 10px);
    }
}

/* Mobile breakpoint - switch to mobile header */
@media screen and (max-width: 768px) {
    /* Hide desktop navigation */
    .top-navigation {
        display: none !important;
    }
    
    /* Show mobile header */
    .mobile-header {
        display: block !important;
    }
}

/* Extra small screens */
@media screen and (max-width: 480px) {
    .mobile-header-content {
        padding: 0 var(--space-md);
    }
    
    .mobile-site-title .logo-circle {
        width: 35px;
        height: 35px;
    }
    
    .mobile-site-title .logo-text {
        font-size: var(--font-size-lg);
    }
    
    .mobile-site-title .site-main-name {
        font-size: var(--font-size-sm);
    }
}