/* ============================================
   HEADER STYLES - IMPROVED
   ============================================ */

:root {
    --color-primary: #0a337c;
    --color-secondary: #18181c;
    --color-text-muted: #79747e;
    --color-bg: #ffffff;
    --color-border: #e0e0e0;
    --font-display: 'Zen Kaku Gothic New', sans-serif;
    --font-mono: 'Montserrat', sans-serif;
}

/* Header Container */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(4.375px);
    -webkit-backdrop-filter: blur(4.375px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
    height: 77px;
}

.header-container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    position: relative;
}

/* Logo */
.logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    height: 32px;
}

.logo-image {
    height: 32px;
    width: auto;
    object-fit: contain;
}

/* Desktop Navigation */
.desktop-nav {
    display: none;
    align-items: center;
    gap: 0;
    margin-left: auto;
    padding-right: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 20px 20px;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.8px;
    color: var(--color-text-muted);
    transition: color 0.3s ease;
    border-left: 1px solid transparent;
    white-space: nowrap;
    text-decoration: none;
}

.nav-item:first-child {
    border-left: none;
}

.nav-item:hover {
    color: var(--color-primary);
}

.nav-item--active {
    color: var(--color-primary);
}

.nav-icon {
    width: 16px;
    height: 16px;
    opacity: 0;
    transition: opacity 0.3s ease;
    flex-shrink: 0;
    color: currentColor;
}

.nav-item:hover .nav-icon,
.nav-item--active .nav-icon {
    opacity: 1;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 24px;
    height: 24px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 101;
}

.mobile-menu-btn span {
    width: 100%;
    height: 3px;
    background-color: var(--color-secondary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: absolute;
    top: 77px;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    z-index: 99;
}

.mobile-nav.active {
    display: flex;
}

.mobile-nav-item {
    padding: 16px 24px;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
    color: var(--color-secondary);
    text-decoration: none;
    border-bottom: 1px solid var(--color-border);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.mobile-nav-item:hover {
    background-color: #f5f5f5;
    color: var(--color-primary);
}

.mobile-nav-item:last-child {
    border-bottom: none;
}

/* ============================================
   Media Queries
   ============================================ */

/* Tablet and Desktop (768px and above) */
@media (min-width: 768px) {
    .desktop-nav {
        display: flex;
    }

    .mobile-menu-btn {
        display: none;
    }

    .mobile-nav {
        display: none !important;
    }
}

/* Small Screens (below 768px) */
@media (max-width: 767px) {
    .header-container {
        padding: 0 16px;
    }

    .nav-item {
        padding: 16px 0;
    }

    .desktop-nav {
        display: none !important;
    }
}

/* ============================================
   Breadcrumb
   ============================================ */
.breadcrumb {
    padding: 12px 0;
    background: transparent;
}

.breadcrumb__inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.breadcrumb__list {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}

.breadcrumb__item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: #666;
}

.breadcrumb__item + .breadcrumb__item::before {
    content: '>';
    color: #999;
}

.breadcrumb__link {
    color: #666;
    text-decoration: none;
}

.breadcrumb__link:hover {
    text-decoration: underline;
}

.breadcrumb__current {
    color: #333;
}

@media (max-width: 767px) {
    .breadcrumb__inner {
        padding: 0 20px;
    }

    .breadcrumb__item {
        font-size: 12px;
    }
}