/* Header */
header {
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--surface-bg);
}

header nav {
    max-width: var(--wrapper-max-width);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-logo {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
    transition: color var(--transition);
    flex-shrink: 0;
    margin-right: auto;
}

.nav-logo:hover {
    color: var(--accent);
}

.nav-logo img {
    transition: filter var(--transition);
}

/* Invert logo colors in dark mode */
[data-theme="dark"] .nav-logo img {
    filter: invert(1) hue-rotate(180deg);
}

/* Hamburger menu button (mobile only) */
.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    padding: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
}

/* Navigation menu (desktop) */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

/* Menu button */
.nav-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
}

.nav-dropdown-toggle:hover {
    background: var(--bg-muted);
    border-color: var(--text-muted);
}

.nav-dropdown-toggle[aria-expanded="true"] {
    background: var(--text-primary);
    border-color: var(--text-primary);
    color: var(--text-on-primary);
}

.dropdown-arrow {
    transition: transform var(--transition);
    opacity: 0.6;
}

.nav-dropdown-toggle[aria-expanded="true"] .dropdown-arrow {
    transform: rotate(180deg);
    opacity: 1;
}

/* Hidden - content cloned to overlay */
.nav-dropdown-menu {
    display: none;
}

/* Search button */
.nav-search-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.nav-search-button:hover {
    background: var(--bg-muted);
    border-color: var(--text-muted);
    color: var(--text-primary);
}

/* Theme toggle button */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.theme-toggle:hover {
    background: var(--bg-muted);
    border-color: var(--text-muted);
    color: var(--text-primary);
}

/* Show sun icon in dark mode, moon icon in light mode */
.theme-toggle .icon-sun {
    display: none;
}

.theme-toggle .icon-moon {
    display: block;
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon {
    display: none;
}

/* ===========================================
   Shared Overlay Styles
   =========================================== */
.overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

.overlay-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    width: 100%;
    margin: 0 auto;
}

.overlay-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    flex-shrink: 0;
    border-radius: 50%;
    transition: all var(--transition);
}

.overlay-close:hover {
    background: var(--bg-muted);
    color: var(--text-primary);
}

.overlay-content {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    margin: 0 auto;
}

/* Section title - shared typography */
.section-title {
    display: block;
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

/* ===========================================
   Search Overlay
   =========================================== */
.search-overlay {
    z-index: 1001;
}

.search-overlay .overlay-header {
    max-width: 800px;
}

.search-overlay .overlay-content {
    max-width: 800px;
}

.search-overlay-input-wrapper {
    flex: 1;
    position: relative;
}

.search-overlay-input-wrapper .search-icon {
    position: absolute;
    left: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    transition: color var(--transition);
}

.search-overlay-input-wrapper:focus-within .search-icon {
    color: var(--accent);
}

.search-overlay-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-md) calc(var(--spacing-lg) + 30px);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--surface-bg);
    color: var(--text-primary);
    transition: all var(--transition);
}

.search-overlay-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Search results */
.search-category-section {
    margin-bottom: var(--spacing-lg);
}

.search-category-header {
    position: sticky;
    top: 0;
    background: var(--overlay-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius);
    margin: 0 var(--spacing-md);
    text-decoration: none;
    color: var(--text-primary);
    transition: background var(--transition);
}

.search-result-item:hover,
.search-result-item.active {
    background: var(--bg-hover);
}

.search-result-swatch {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    flex-shrink: 0;
    border: 1px solid var(--border-subtle);
}

.search-result-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.search-result-number {
    font-weight: 600;
    font-size: 1rem;
}

.search-result-name {
    color: var(--text-secondary);
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-no-results {
    padding: var(--spacing-3xl) var(--spacing-xl);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ===========================================
   Menu Overlay
   =========================================== */
.menu-overlay .overlay-header {
    max-width: 600px;
    justify-content: space-between;
}

.menu-overlay .overlay-content {
    max-width: 600px;
    padding: var(--spacing-lg) 0;
}

.menu-overlay .menu-section {
    padding: var(--spacing-md) 0;
}

.menu-overlay .menu-section:not(:last-child) {
    border-bottom: 1px solid var(--border-light);
}

.menu-overlay .menu-section-title {
    display: block;
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.menu-overlay .menu-section a {
    display: block;
    padding: var(--spacing-md) var(--spacing-xl);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.1rem;
    transition: all var(--transition);
}

.menu-overlay .menu-section a:hover {
    background: var(--bg-subtle);
    color: var(--accent);
}

/* ===========================================
   Breadcrumbs
   =========================================== */
.breadcrumbs {
    margin-bottom: var(--spacing-lg);
}

.breadcrumbs ol {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
}

.breadcrumbs li {
    display: flex;
    align-items: center;
    color: var(--text-secondary);
}

.breadcrumbs li:not(:last-child)::after {
    content: "";
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-left: var(--spacing-sm);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='9 18 15 12 9 6'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0.6;
}

.breadcrumbs a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition);
    display: flex;
    align-items: center;
}

.breadcrumbs a:hover {
    color: var(--accent);
}

.breadcrumb-home-icon {
    display: block;
}

.breadcrumbs span[aria-current="page"] {
    color: var(--text-primary);
    font-weight: 500;
}

/* ===========================================
   Footer
   =========================================== */
footer {
    margin-top: var(--spacing-2xl);
    color: var(--text-secondary);
    font-size: 0.9rem;
    background: var(--footer-background);
}

footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

footer a:hover {
    color: var(--accent);
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 3fr;
    gap: var(--spacing-2xl);
    max-width: var(--wrapper-max-width);
    margin: 0 auto;
}

.footer-about {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-about p {
    margin: 0;
    line-height: 1.6;
    color: var(--text-secondary);
}

.footer-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.footer-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-section h3 {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-section ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-section a {
    font-size: 0.85rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--wrapper-max-width);
    margin: 0 auto;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
}

.footer-tagline {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-language {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
}

.footer-language span {
    color: var(--border-color);
}

.footer-language a[aria-current="true"] {
    color: var(--text-primary);
    font-weight: 600;
}

.footer-copyright {
    margin: 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ===========================================
   Mobile Styles
   =========================================== */
@media (max-width: 600px) {
    header nav {
        padding: var(--spacing-md);
    }

    .nav-logo img {
        height: 22px;
    }

    .nav-hamburger {
        display: flex;
    }

    .nav-menu {
        display: none;
    }

    .nav-search-button,
    .theme-toggle {
        width: 36px;
        height: 36px;
    }

    .overlay-header {
        padding: var(--spacing-md);
    }

    .overlay-header .nav-logo img {
        height: 22px;
    }

    .search-category-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .search-result-item {
        padding: var(--spacing-md);
        margin: 0 var(--spacing-sm);
    }
}

@media (max-width: 900px) {
    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .footer-nav {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
}

@media (max-width: 600px) {
    .footer-nav {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}