:root {
    /* Colors - Cream/Navy Theme */
    --color-cream: #F5F1E8;
    --color-cream-dark: #E8E2D5;
    --color-navy: #1E2A3A;
    --color-navy-light: #2D3E50;
    --color-gold: #C9A961;
    --color-gold-dark: #B8964D;
    --color-text: #2C2C2C;
    --color-text-light: #6B6B6B;
    --color-white: #FFFFFF;
    --color-border: #D4CFC0;

    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Mode Variables */
body.dark-mode {
    --color-cream: #1E2A3A;
    --color-cream-dark: #2D3E50;
    --color-navy: #F5F1E8;
    --color-navy-light: #E8E2D5;
    --color-text: #F5F1E8;
    --color-text-light: #B8B8B8;
    --color-white: #1A1A1A;
    --color-border: #3A4A5A;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-cream);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Header */
.header {
    background-color: var(--color-cream);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-base);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-navy);
}

.logo-text {
    letter-spacing: 0.05em;
}

.nav {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-gold);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-gold);
    transition: width var(--transition-base);
}

.nav-link:hover::after {
    width: 100%;
}

/* Language Switcher */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-right: 15px;
    font-size: 0.9rem;
    font-weight: 600;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--color-text-light);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.lang-btn.active {
    color: var(--color-gold);
    background: rgba(201, 169, 97, 0.1);
}

.lang-btn:hover:not(.active) {
    color: var(--color-navy);
}

.lang-divider {
    color: var(--color-border);
}

.sidebar-lang {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sidebar-lang .lang-btn {
    text-align: left;
    padding: 12px;
    font-size: 1rem;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

.sidebar-lang .lang-btn.active {
    border-color: var(--color-gold);
    color: var(--color-gold);
    background: rgba(201, 169, 97, 0.05);
}

.sidebar-divider {
    height: 1px;
    background: var(--color-border);
    margin: 10px 0;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.search-btn {
    color: var(--color-text);
    padding: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.search-btn:hover {
    color: var(--color-gold);
}

/* Theme Toggle */
.theme-toggle {
    padding: 4px;
}

.toggle-track {
    width: 48px;
    height: 24px;
    background-color: var(--color-navy);
    border-radius: 12px;
    position: relative;
    transition: background-color var(--transition-base);
}

.toggle-thumb {
    width: 18px;
    height: 18px;
    background-color: var(--color-cream);
    border-radius: 50%;
    position: absolute;
    top: 3px;
    left: 3px;
    transition: transform var(--transition-base);
}

body.dark-mode .toggle-thumb {
    transform: translateX(24px);
}

/* Hero Section */
.hero {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: var(--spacing-xl);
    transition: color var(--transition-base);
}

/* Carousel */
.carousel {
    position: relative;
    margin-top: var(--spacing-xl);
}

.carousel-container {
    overflow: hidden;
    border-radius: var(--radius-lg);
}

.carousel-slide {
    display: none;
    position: relative;
    height: 500px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.carousel-slide.active {
    display: block;
}

.carousel-image {
    width: 100%;
    height: 100%;
    position: relative;
}

.carousel-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.2) 50%, transparent 100%);
}

.carousel-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-content {
    position: absolute;
    bottom: var(--spacing-xl);
    left: var(--spacing-xl);
    color: #FFFFFF;
    z-index: 10;
    max-width: 500px;
}

.carousel-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.carousel-meta {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
    opacity: 0.95;
}

.meta-item svg {
    opacity: 0.8;
}

/* Carousel Buttons */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--color-navy);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 20;
}

.carousel-btn:hover {
    background-color: var(--color-white);
    transform: translateY(-50%) scale(1.1);
}

.carousel-btn.prev {
    left: var(--spacing-md);
}

.carousel-btn.next {
    right: var(--spacing-md);
}

/* Blueprints Section */
.blueprints {
    padding: var(--spacing-3xl) 0;
}

.blueprints-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

/* Blueprint Card */
.blueprint-card {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    cursor: pointer;
}

.blueprint-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.card-image {
    width: 100%;
    height: 240px;
    overflow: hidden;
    position: relative;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.blueprint-card:hover .card-image img {
    transform: scale(1.05);
}

.card-content {
    padding: var(--spacing-md);
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.card-description {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-footer {
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.reading-time {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* Mobile Sidebar */
.mobile-sidebar {
    display: none;
    position: fixed;
    right: 0;
    top: 0;
    bottom: 0;
    width: 280px;
    background-color: var(--color-white);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    transform: translateX(100%);
    transition: transform var(--transition-base);
    flex-direction: column;
}

.mobile-sidebar.active {
    transform: translateX(0);
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.sidebar-link {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text);
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
}

.sidebar-link:hover {
    color: var(--color-gold);
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

/* Footer */
.footer {
    background-color: var(--color-white);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-gold);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    color: var(--color-text);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
}

.social-links a:hover {
    color: var(--color-gold);
    background-color: var(--color-cream);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.footer-bottom p,
.copyright {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .blueprints-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {

    /* Mobile Layout */
    .nav {
        display: none;
    }

    .section-title {
        font-size: 2rem;
    }

    .carousel-slide {
        height: 400px;
    }

    .carousel-title {
        font-size: 1.8rem;
    }

    .carousel-content {
        bottom: var(--spacing-md);
        left: var(--spacing-md);
        right: var(--spacing-md);
    }

    .carousel-meta {
        gap: var(--spacing-sm);
    }

    .meta-item {
        font-size: 0.8rem;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
    }

    .blueprints-grid {
        grid-template-columns: 1fr;
    }

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

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    /* Show mobile sidebar on mobile */
    .mobile-sidebar {
        display: flex;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .section-title {
        font-size: 1.75rem;
    }

    .carousel-slide {
        height: 350px;
    }

    .carousel-title {
        font-size: 1.5rem;
    }

    .card-title {
        font-size: 1.1rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.blueprint-card {
    animation: fadeIn 0.5s ease forwards;
}

.blueprint-card:nth-child(1) {
    animation-delay: 0.1s;
}

.blueprint-card:nth-child(2) {
    animation-delay: 0.2s;
}

.blueprint-card:nth-child(3) {
    animation-delay: 0.3s;
}

.blueprint-card:nth-child(4) {
    animation-delay: 0.4s;
}

.blueprint-card:nth-child(5) {
    animation-delay: 0.5s;
}

.blueprint-card:nth-child(6) {
    animation-delay: 0.6s;
}

/* Loading State */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.mb-3 {
    margin-bottom: var(--spacing-lg);
}

/* Availability Badges */
.card-image {
    position: relative;
}

.unavailable-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(220, 38, 38, 0.9);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    backdrop-filter: blur(4px);
    z-index: 2;
}

.availability {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    margin-left: auto;
}

.availability.available {
    color: #059669;
    background: #ecfdf5;
}

.availability.unavailable {
    color: #dc2626;
    background: #fef2f2;
}

/* Page Header */
.page-header-section {
    background: var(--color-cream);
    padding: 4rem 0 2rem;
    margin-top: 80px;
    /* To account for fixed header */
}

.page-header-section h1 {
    font-size: 3rem;
    font-family: 'Playfair Display', serif;
    margin-bottom: 1rem;
    color: var(--color-navy);
}

.page-header-section p {
    color: var(--color-text-light);
    font-size: 1.125rem;
}

.content-section {
    padding: 4rem 0;
}

/* Mobile Carousel Styles */
.section-header-mobile {
    margin-bottom: var(--spacing-lg);
    padding: 0 var(--spacing-sm);
}

.section-title-main {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 0.25rem;
}

.section-subtitle {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

.mobile-carousel-container {
    width: 100%;
    margin-top: var(--spacing-md);
    position: relative;
}

.carousel-track {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: var(--spacing-md);
    padding: 0 var(--spacing-sm) var(--spacing-lg);
    scrollbar-width: none;
    /* Hide scrollbar Firefox */
    -ms-overflow-style: none;
    /* Hide scrollbar IE/Edge */
}

.carousel-track::-webkit-scrollbar {
    display: none;
    /* Hide scrollbar Chrome/Safari */
}

.carousel-item {
    flex: 0 0 85%;
    scroll-snap-align: center;
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-item:hover {
    transform: scale(1.02);
}

.blueprint-item {
    aspect-ratio: 4/5;
}

.blueprint-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.glass-overlay {
    position: absolute;
    bottom: var(--spacing-md);
    left: var(--spacing-md);
    right: var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: white;
}

.overlay-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.overlay-meta-mobile {
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.overlay-meta-mobile .months {
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0.9;
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 8px;
    border-radius: 4px;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: -10px;
    margin-bottom: var(--spacing-xl);
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-border);
    transition: all 0.3s ease;
}

.dot.active {
    width: 24px;
    border-radius: 4px;
    background: var(--color-navy);
}

/* Blog Carousel specific */
.blog-item {
    flex: 0 0 75%;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    border-radius: 0;
    overflow: visible;
}

.blog-item img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.blog-info h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--color-navy);
}

.blog-info p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Header adjust for VSR style */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--color-navy);
    cursor: pointer;
    padding: 5px;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .logo-text {
        font-family: var(--font-display);
    }

    .header-content {
        padding: var(--spacing-md) 0;
    }

    .home-section {
        padding: var(--spacing-xl) 0;
    }

    /* Make desktop grids hidden on mobile if needed */
    .blueprints-grid {
        display: none;
    }

    .section-title {
        display: none;
        /* Hide old redundant title on mobile */
    }
}

@media (min-width: 769px) {
    .mobile-carousel-container {
        display: none;
    }

    .section-header-mobile {
        display: block;
        margin-bottom: var(--spacing-xl);
    }

    .section-title-main {
        font-size: 3rem;
    }
}

/* Utility visibility classes */
@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }
}

@media (min-width: 769px) {
    .mobile-only {
        display: none !important;
    }
}

body.dark-mode .glass-overlay {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

body.dark-mode .dot.active {
    background: var(--color-gold);
}

.home-section {
    padding: var(--spacing-3xl) 0;
}

@media (max-width: 768px) {
    .home-section {
        padding: 4rem 0;
    }
}