/* ============================================
   CSS Variables & Design System
   ============================================ */
:root {
    /* Color palette */
    --color-primary: #4CA2FE; /* matches header-cta-bg for consistency  4DA3FF*/
    --color-accent: #1E6CFF;  /* matches header-link-hover for consistency */
    --gradient-primary: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    
    /* Header & Footer Colors - Premium Design */
    --header-bg: #0A1A2F; /* deep premium navy */
    --header-bg-solid: #0A1A2F; /* Fallback solid color */
    --header-link-color: #E6F0FA; /* soft ice-white */
    --header-link-hover: #1E6CFF; /* clean glass-blue */
    --header-cta-bg: #4CA2FE; /* Get a Quote button background */
    --header-cta-text: #FFFFFF; /* Get a Quote button text */
    
    --footer-bg: #08121F;
    --footer-bg-solid: #08121F; /* Fallback solid color */
    --footer-text: #B6C4D4; /* Footer text color */
    --footer-link-hover: #1E6CFF; /* Footer links hover */
    --footer-title: #FFFFFF; /* Section titles */
    --header-footer-border: rgba(255, 255, 255, 0.1);
    
    /* Background & Surface */
    --bg: #F7F9FC;
    --surface: #FFFFFF;
    --glass-alpha: rgba(255, 255, 255, 0.6);
    
    /* Text Colors */
    --text: #1A1A1A;
    --text-light: #FFFFFF;
    --muted: #38393b;
    
    /* Borders & Dividers */
    --border: #E5E7EB;
    
    /* Border Radius */
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-xxl: 32px;
    
    /* Shadows */
    --shadow: 0 6px 24px rgba(15, 23, 42, 0.06);
    --shadow-soft: 0 8px 30px rgba(15, 23, 42, 0.08);
    --shadow-hover: 0 12px 40px rgba(15, 23, 42, 0.12);
    --shadow-focus: 0 0 0 4px rgba(0, 70, 255, 0.12);
    
    /* Layout */
    --max-width: 1400px;
    --header-offset: 100px;
    
    /* Spacing Scale */
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 40px;
    --space-3xl: 60px;
    --space-4xl: 80px;
    
    /* Transitions */
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s ease-out;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-offset);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}

section {
    scroll-margin-top: var(--header-offset);
}

/* ============================================
   Skip Link
   ============================================ */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--text-light);
    padding: var(--space-xs);
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* ============================================
   Header & Navigation
   ============================================ */
.site-header {
    background-color: var(--header-bg);
    padding: 0;
    position: fixed;
    width: 100%;
    top: 0;
    height: 100px;
    z-index: 999;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15), 0 1px 3px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--header-footer-border);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    height: 100%;
    position: relative;    
}

.site-branding {
    display: flex;
    align-items: center;
}

.brand-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    text-decoration: none;
}

.site-branding img,
.site-logo {
    max-height: 70px;
    width: auto;
}

.brand-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.brand-line {
    font-weight: 800;
    font-size: 20px;
}

.brand-line-primary {
    color: var(--header-cta-bg);
    /*text-shadow: 0 2px 8px rgba(77, 163, 255, 0.3);*/
}

.brand-line-light {
    color: var(--header-link-color);
    letter-spacing: 0.8em;
    font-size: 20px;
}

.site-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--header-cta-bg);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.main-navigation {
    display: flex;
    align-items: center;
    position: relative;
    margin-left: auto;
}

.nav-toggle {
    display: inline-block;
    background: var(--header-cta-bg);
    color: var(--header-cta-text);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    padding: 0;
}

.nav-toggle:focus-visible {
    outline: 2px solid var(--header-cta-text);
    outline-offset: 2px;
}

.nav-toggle:hover {
    background: var(--header-cta-bg);
    transform: scale(1.05);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-light);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    transition: all var(--transition-base);
}

.nav-toggle span:nth-child(1) { top: 11px; }
.nav-toggle span:nth-child(2) { top: 19px; }
.nav-toggle span:nth-child(3) { top: 27px; }

body.nav-open .nav-toggle span:nth-child(1) {
    top: 19px;
    transform: translateX(-50%) rotate(45deg);
}

body.nav-open .nav-toggle span:nth-child(2) {
    opacity: 0;
}

body.nav-open .nav-toggle span:nth-child(3) {
    top: 19px;
    transform: translateX(-50%) rotate(-45deg);
}

.main-navigation ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0;
}

.main-navigation li {
    position: relative;
}

.main-navigation a {
    display: block;
    color: var(--header-link-color);
    text-decoration: none;
    padding: var(--space-sm) var(--space-lg);
    font-size: 15px;
    font-weight: 500;
    transition: all var(--transition-base);
    position: relative;
}

.main-navigation a::before {
    content: '';
    position: absolute;
    bottom: 8px;
    left: var(--space-lg);
    right: var(--space-lg);
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.main-navigation a:not(.cta-button):hover {
    color: var(--color-primary);
}

.main-navigation a:not(.cta-button):hover::before {
    transform: scaleX(1);
}

.main-navigation .has-submenu > a {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    position: relative;
    padding-right: 52px;
}


.main-navigation .has-submenu > a::after {
    display: none;
}

.main-navigation .submenu-toggle {
    position: absolute;
    top: 0;
    right: 0;
    width: 52px;
    height: 100%;
    border: none;
    background: transparent;
    color: var(--header-link-color);
    font-size: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: color var(--transition-base), transform var(--transition-base);
    font-weight: 700;
}

.main-navigation .submenu-toggle:focus-visible {
    outline: 2px solid var(--header-cta-text);
    outline-offset: 2px;
}

.main-navigation .has-submenu.open .submenu-toggle {
    transform: rotate(180deg);
}

.main-navigation .submenu {
    position: absolute;
    top: 100%;
    left: 0;
    display: none;
    min-width: 220px;
    background-color: var(--header-bg);
    border-radius: var(--radius-xs);
    padding: var(--space-xs) 0;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3), 0 4px 12px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--header-footer-border);
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.main-navigation .submenu li a {
    padding: 10px var(--space-md);
    white-space: nowrap;
    color: var(--header-link-color);
}

.main-navigation .submenu li a:hover {
    background: rgba(77, 163, 255, 0.1);
    color: var(--color-primary);
}

.main-navigation .has-submenu:hover > .submenu,
.main-navigation .has-submenu:focus-within > .submenu {
    display: block;
}

.main-navigation .cta-button {
    background-color: var(--header-cta-bg);
    color: var(--header-cta-text);
    padding: var(--space-sm) var(--space-xl);
    margin-left: var(--space-md);
    border-radius: var(--radius-xl);
    font-weight: 600;
    transition: all var(--transition-base);
    text-decoration: none;
}

.main-navigation .cta-button::before {
    display: none;
}

.main-navigation .cta-button:hover {
    background-color: var(--header-cta-bg);
    color: var(--header-cta-text);
    transform: none;
    box-shadow: none;
}

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
    background: linear-gradient(rgba(15, 52, 96, 0.85), rgba(26, 26, 46, 0.85)),
                url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1920 1080"%3E%3Crect fill="%230f3460" width="1920" height="1080"/%3E%3C/svg%3E');
    background-size: cover;
    background-position: center center;
    background-attachment: fixed;
    padding: 200px var(--space-2xl) 140px;
    margin-top: 90px;
    text-align: center;
    position: relative;
    opacity: 1 !important;
    transform: none !important;
}

.hero-media {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.hero-media .hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-section::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(rgba(15, 52, 96, 0.55), rgba(26, 26, 46, 0.70));
    pointer-events: none;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-subtitle {
    color: #1A1A1A;
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: var(--space-lg);
    display: inline-block;
    background: rgba(255, 255, 255, 0.95);
    padding: 8px 20px;
    border-radius: var(--radius-xxl);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.hero-title {
    font-size: 60px;
    font-weight: 900;
    color: var(--text-light);
    line-height: 1.15;
    margin-bottom: var(--space-xl);
    letter-spacing: -1px;
}

.hero-description {
    font-size: 19px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    margin-bottom: var(--space-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   Buttons
   ============================================ */
.button {
    display: inline-block;
    padding: 18px 45px;
    font-size: var(--space-md);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
}

.button-primary {
    background-color: var(--header-cta-bg);
    color: var(--header-cta-text);
}

.button-primary:hover {
    background-color: var(--header-link-hover);
    color: var(--header-cta-text);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(30, 108, 255, 0.3);
}

.button-secondary {
    background-color: transparent;
    color: var(--text-light);
    border: 2px solid var(--text-light);
}

.button-secondary:hover {
    background-color: var(--text-light);
    color: var(--text);
}

/* ============================================
   Sections
   ============================================ */
.content-section {
    padding: var(--space-3xl) var(--space-2xl);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.content-section.animate {
    opacity: 1;
    transform: translateY(0);
}

.section-light {
    background-color: var(--bg);
}

.section-dark {
    background: linear-gradient(135deg, #0F2542 0%, #1A3A5C 50%, #0C1F3A 100%);
    background-color: #0F2542; /* Fallback */
    color: var(--text-light);
    position: relative;
    overflow: hidden;
}

.section-dark::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--header-cta-bg), transparent);
    opacity: 0.5;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow) 0.2s, transform var(--transition-slow) 0.2s;
}

.section-header.animate {
    opacity: 1;
    transform: translateY(0);
}

.section-label {
    color: var(--color-primary);
    font-size: 18px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    margin-bottom: var(--space-md);
}

.section-dark .section-label {
    color: var(--header-cta-bg);
    text-shadow: 0 2px 4px rgba(77, 163, 255, 0.3);
}

.section-title {
    font-size: 38px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 5px;
    line-height: 1.2;
    letter-spacing: -1px;
}

.section-dark .section-title {
    color: #FFFFFF;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.section-description {
    font-size: 18px;
    color: var(--muted);
    max-width: 750px;
    margin: 0 auto;
    line-height: 1.7;
}

.section-dark .section-description {
    color: #D1E0F0;
}

/* ============================================
   Grid Patterns
   ============================================ */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4xl);
    align-items: center;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-2xl);
}

/* ============================================
   About Section
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.about-content .section-label {
    text-align: left;
    margin-bottom: 10px;
    color: var(--color-primary);
    font-size: 18px;
    font-weight: 700;
}

.about-content h2 {
    font-size: 38px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 5px;
    line-height: 1.2;
    text-align: left;
}

.about-content p {
    font-size: 17px;
    color: var(--muted);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.about-image {
    height: 550px;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-hover);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* ============================================
   Feature Items
   ============================================ */
.features-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
    max-width: 940px;
    margin-left: auto;
    margin-right: auto;
}

.feature-item {
    background: #FFFFFF;
    padding: 28px;
    border-radius: 22px;
    border: 1px solid rgba(10, 26, 47, 0.08);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow), box-shadow var(--transition-base);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-height: 80px;
    justify-content: center;
}

.feature-item.animate {
    opacity: 1;
    transform: translateY(0);
}

.feature-item:hover {
    transform: translateY(-6px) !important;
    box-shadow: 0 28px 55px rgba(15, 23, 42, 0.12);
}

.feature-item h4 {
    font-size: 18px;
    font-weight: 700;
    color: #0A1A2F;
    margin-bottom: 4px;
}

.feature-item p {
    font-size: 14px;
    color: rgba(15, 23, 42, 0.65);
    margin: 0;
    line-height: 1.5;
}

.button-wrapper {
    margin-top: var(--space-lg);
}

/* ============================================
   Services, Projects, Benefits Grids
   ============================================ */
.services-grid,
.projects-grid,
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.service-box,
.project-card,
.benefit-box {
    background: var(--surface);
    border-radius: var(--radius);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow), box-shadow var(--transition-base);
    box-shadow: var(--shadow-soft);
}

.service-box.animate,
.project-card.animate,
.benefit-box.animate {
    opacity: 1;
    transform: translateY(0);
}

.service-box {
    padding: 45px var(--space-xl);
    text-align: center;
}

.service-box:hover {
    transform: translateY(-10px) !important;
    box-shadow: var(--shadow-hover);
}

.service-icon {
    font-size: 64px;
    margin-bottom: var(--space-lg);
    line-height: 1;
}

.service-box h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 18px;
}

.service-box p {
    font-size: var(--space-md);
    color: var(--muted);
    line-height: 1.7;
}

.project-card {
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-8px) !important;
    box-shadow: var(--shadow-hover);
}

.project-image {
    height: 300px;
    background: var(--gradient-primary);
    border-radius: var(--radius) var(--radius) 0 0;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-hover);
}

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

.project-image-placeholder {
    font-size: 90px;
    color: rgba(255, 255, 255, 0.9);
}

.window-image {
    height: 450px;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 10px;
}

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

.window-image-placeholder {
    font-size: 90px;
    color: rgba(255, 255, 255, 0.9);
}

.project-info {
    padding: var(--space-xl);
}

.project-category {
    color: var(--color-primary);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: var(--space-sm);
}

.project-info h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--space-xs);
    line-height: 1.3;
}

.project-subtitle {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.project-info p {
    font-size: var(--space-md);
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.project-link {
    color: var(--header-cta-bg);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    transition: all var(--transition-base);
}

.project-link:hover {
    gap: var(--space-sm);
    color: var(--header-link-hover);
}

.benefit-box {
    padding: 45px var(--space-xl);
    text-align: center;
}

.benefit-box:hover {
    background: var(--text);
    transform: translateY(-10px) !important;
    box-shadow: var(--shadow-hover);
}

.benefit-icon {
    font-size: 72px;
    margin-bottom: var(--space-lg);
    line-height: 1;
}

.benefit-box h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--space-md);
    transition: color var(--transition-base);
}

.benefit-box p {
    font-size: var(--space-md);
    color: var(--muted);
    line-height: 1.7;
    transition: color var(--transition-base);
}

.benefit-box:hover h3,
.benefit-box:hover p {
    color: var(--text-light);
}

/* ============================================
   Why Order List
   ============================================ */
.why-order-list {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2xl);
}

.why-order-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    transition: all var(--transition-base);
    box-shadow: var(--shadow);
}

.why-order-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--color-primary);
}

.why-order-icon {
    flex-shrink: 0;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--header-cta-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: all var(--transition-base);
    color: var(--header-cta-text);
}

.why-order-icon svg {
    width: 36px;
    height: 36px;
    stroke: currentColor;
}

.why-order-item:hover .why-order-icon {
    background-color: var(--header-link-hover);
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 4px 12px rgba(30, 108, 255, 0.3);
}

.why-order-content {
    flex: 1;
}

.why-order-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
    line-height: 1.3;
}

.why-order-content p {
    font-size: var(--space-md);
    color: var(--muted);
    line-height: 1.7;
    margin: 0;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: start;
}

.contact-info h2 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

.contact-info p {
    font-size: 17px;
    line-height: 1.8;
    margin-bottom: var(--space-2xl);
    opacity: 0.9;
}

.contact-details-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.contact-detail {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
}

.contact-icon {
    width: 55px;
    height: 55px;
    background-color: var(--header-cta-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
    color: var(--header-cta-text);
    transition: all var(--transition-base);
}

.contact-icon:hover {
    background-color: var(--header-link-hover);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(30, 108, 255, 0.3);
}

.contact-detail-text strong {
    display: block;
    font-weight: 700;
    margin-bottom: var(--space-xs);
    font-size: var(--space-md);
    color: #FFFFFF;
}

.section-dark .contact-detail-text strong {
    color: #FFFFFF;
}

.contact-detail-text span {
    font-size: var(--space-md);
    opacity: 0.9;
}

.section-dark .contact-detail-text span {
    color: #D1E0F0;
    opacity: 1;
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    padding: 50px;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
}

.contact-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--header-cta-bg), transparent);
    border-radius: var(--radius) var(--radius) 0 0;
    opacity: 0.6;
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    font-size: 15px;
}

.section-dark .form-group label {
    color: #E6F0FA;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-md) 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    font-size: 15px;
    font-family: inherit;
    background: var(--surface);
    color: var(--text);
    transition: all var(--transition-base);
}

.section-dark .form-group input,
.section-dark .form-group select,
.section-dark .form-group textarea {
    background: rgba(255, 255, 255, 0.98);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--text);
}

.section-dark .form-group input::placeholder,
.section-dark .form-group textarea::placeholder {
    color: #9AA3B2;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--header-cta-bg);
    box-shadow: 0 0 0 4px rgba(77, 163, 255, 0.15);
}

.section-dark .form-group input:focus,
.section-dark .form-group select:focus,
.section-dark .form-group textarea:focus {
    border-color: var(--header-cta-bg);
    box-shadow: 0 0 0 4px rgba(77, 163, 255, 0.2), 0 4px 12px rgba(77, 163, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.submit-button {
    width: 100%;
    padding: 18px;
    background-color: var(--color-primary);
    color: var(--text-light);
    border: none;
    border-radius: var(--radius-xl);
    font-size: var(--space-md);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
}

.submit-button:hover {
    background-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.form-status {
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    background: #e2e8f0;
    color: #0f172a;
    display: none;
}

.form-status.success {
    background: #d1fae5;
    color: #065f46;
    display: block;
}

.form-status.error {
    background: #fee2e2;
    color: #b91c1c;
    display: block;
}

/* ============================================
   Door Product Cards
   ============================================ */
.door-product-card {
    margin-bottom: var(--space-2xl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.door-product-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.door-product-card .project-image {
    height: 400px;
}

.door-product-card .project-image .project-image-placeholder {
    font-size: 120px;
}

.door-product-card ul {
    list-style: none;
    padding: 0;
    margin: var(--space-lg) 0;
}

.door-product-card ul li {
    padding: var(--space-xs) 0;
    border-bottom: 1px solid var(--border);
}

.door-product-card ul li:last-child {
    border-bottom: none;
}

/* ============================================
   Partners Section
   ============================================ */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 50px;
    align-items: center;
    justify-items: center;
    margin-top: 50px;
}

.partner-logo {
    background: var(--surface);
    padding: var(--space-xl);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 150px;
    width: 100%;
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
}

.partner-logo.animate {
    opacity: 1;
    transform: translateY(0);
}

.partner-logo:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.partner-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.partner-logo p {
    color: var(--muted);
    font-weight: 600;
    margin: 0;
    text-align: center;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: var(--space-4xl) var(--space-2xl) var(--space-2xl);
    opacity: 1 !important;
    transform: none !important;
    position: relative;
    border-top: 1px solid var(--header-footer-border);
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.3;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-3xl);
    max-width: var(--max-width);
    margin: 0 auto 50px;
}

.footer-section h3 {
    color: var(--color-primary);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--space-lg);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.footer-section p {
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: var(--space-lg);
    color: var(--footer-text);
}

.certifications-logos {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
    align-items: center;
    margin-top: var(--space-md);
}

.certifications-logos img {
    max-height: 80px;
    width: auto;
    object-fit: contain;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 14px;
}

.footer-links a {
    color: var(--footer-text);
    text-decoration: none;
    font-size: 15px;
    transition: all var(--transition-base);
    display: inline-block;
    position: relative;
}

.footer-links a::before {
    content: '→';
    position: absolute;
    left: -20px;
    opacity: 0;
    transition: all var(--transition-base);
    color: var(--footer-link-hover);
}

.footer-links a:hover {
    color: var(--footer-link-hover);
    padding-left: var(--space-lg);
}

.footer-links a:hover::before {
    opacity: 1;
    left: 0;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--header-footer-border);
    font-size: 14px;
    color: var(--footer-text);
}

/* ============================================
   Scroll to Top Button
   ============================================ */
.scroll-top-btn {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 50px;
    height: 50px;
    background-color: var(--header-cta-bg);
    color: var(--header-cta-text);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(30, 108, 255, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 998;
}

.scroll-top-btn.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top-btn:hover {
    background-color: var(--header-link-hover);
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(30, 108, 255, 0.4);
}

.scroll-top-btn svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
}

/* ============================================
   Animation Stagger Delays
   ============================================ */
.projects-grid .project-card:nth-child(1),
.services-grid .service-box:nth-child(1),
.benefits-grid .benefit-box:nth-child(1),
.features-list .feature-item:nth-child(1),
.partners-grid .partner-logo:nth-child(1) {
    transition-delay: 0.1s;
}

.projects-grid .project-card:nth-child(2),
.services-grid .service-box:nth-child(2),
.benefits-grid .benefit-box:nth-child(2),
.features-list .feature-item:nth-child(2),
.partners-grid .partner-logo:nth-child(2) {
    transition-delay: 0.2s;
}

.projects-grid .project-card:nth-child(3),
.services-grid .service-box:nth-child(3),
.benefits-grid .benefit-box:nth-child(3),
.features-list .feature-item:nth-child(3),
.partners-grid .partner-logo:nth-child(3) {
    transition-delay: 0.3s;
}

.projects-grid .project-card:nth-child(4),
.services-grid .service-box:nth-child(4),
.benefits-grid .benefit-box:nth-child(4),
.features-list .feature-item:nth-child(4),
.partners-grid .partner-logo:nth-child(4) {
    transition-delay: 0.4s;
}

.services-grid .service-box:nth-child(5),
.benefits-grid .benefit-box:nth-child(5),
.partners-grid .partner-logo:nth-child(5) {
    transition-delay: 0.5s;
}

.services-grid .service-box:nth-child(6),
.benefits-grid .benefit-box:nth-child(6),
.partners-grid .partner-logo:nth-child(6) {
    transition-delay: 0.6s;
}

.partners-grid .partner-logo:nth-child(7) {
    transition-delay: 0.7s;
}

.partners-grid .partner-logo:nth-child(8) {
    transition-delay: 0.8s;
}

/* ============================================
   Animations
   ============================================ */
@keyframes slideDown {
    0% {
        opacity: 0;
        transform: translateY(-20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Responsive Design - Mobile First
   ============================================ */

/* Base: Mobile styles (default, up to 599px) */
.nav-toggle {
    display: inline-block;
    z-index: 1001;
    flex-shrink: 0;
    margin-left: auto;
    margin-right: 0;
}

.main-navigation ul {
    display: none;
    flex-direction: column;
    gap: 0;
    width: 100%;
    max-width: 100vw;
    background-color: var(--header-bg);
    position: fixed;
    top: 100px;
    left: 0;
    right: 0;
    padding: 0;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3), 0 4px 12px rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--header-footer-border);
    backdrop-filter: blur(10px);
    z-index: 1000;
    animation: slideDown var(--transition-base);
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    margin-left: 0;
}

body.nav-open .main-navigation ul {
    display: flex !important;
}

body.nav-open {
    overflow: hidden;
}

.main-navigation li {
    width: 100%;
    border-bottom: 1px solid var(--header-footer-border);
}

.main-navigation li:last-child {
    border-bottom: none;
}

.main-navigation a {
    padding: var(--space-md) 10px;
    font-size: var(--space-md);
    width: 100%;
}

.main-navigation .cta-button {
    margin-left: 0;
    margin-top: 10px;
    text-align: center;
    display: block;
}

.main-navigation .submenu {
    position: static;
    display: none;
    box-shadow: none;
    border-radius: 0;
    background: rgba(30, 108, 255, 0.08);
    margin: 0;
    padding: 0;
    width: 100%;
    border: none;
}

.main-navigation .has-submenu.open > .submenu {
    display: block;
}

.main-navigation .has-submenu > a::after {
    content: "▸";
    transform: none;
    margin-left: auto;
    font-size: var(--space-md);
}

.main-navigation .has-submenu.open > a::after {
    transform: rotate(90deg);
}

.main-navigation .submenu li {
    border-bottom: none;
}

.main-navigation .submenu li a {
    padding: var(--space-sm) 10px var(--space-sm) 25px;
    font-size: 15px;
}

.header-inner {
    padding: 0 var(--space-sm);
    gap: var(--space-xs);
    height: 100%;
}

.site-branding {
    flex: 1;
    min-width: 0;
}

.brand-link {
    gap: 6px;
}

.site-title {
    font-size: 18px;
}

.hero-title {
    font-size: 36px;
}

.section-title {
    font-size: 32px;
}

.content-section {
    padding: var(--space-3xl) var(--space-lg);
}

.about-grid,
.contact-grid {
    grid-template-columns: 1fr;
    gap: 50px;
}

.about-image {
    height: 300px;
}

.services-grid,
.projects-grid,
.benefits-grid {
    grid-template-columns: 1fr;
}

.why-order-list {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.why-order-item {
    gap: var(--space-md);
    padding: var(--space-lg) 0;
}

.why-order-icon {
    width: 50px;
    height: 50px;
}

.why-order-icon svg {
    width: 24px;
    height: 24px;
}

.why-order-content h3 {
    font-size: 18px;
}

.why-order-content p {
    font-size: 14px;
}

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

.door-product-card {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.door-product-card .window-image,
.door-product-card .project-image {
    height: 300px;
}

.partners-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.hero-section {
    padding: 150px var(--space-lg) 100px;
    background-attachment: scroll;
}

.hero-description {
    font-size: 17px;
}

.button {
    padding: 14px 28px;
    font-size: 15px;
}

.contact-form {
    padding: var(--space-xl) var(--space-lg);
}

.brand-link {
    gap: 10px;
}

.brand-line {
    font-size: 16px;
}

.brand-line-light {
    font-size: 16px;
    letter-spacing: 0.25em;
}

.scroll-top-btn {
    width: 45px;
    height: 45px;
    bottom: var(--space-lg);
    right: var(--space-lg);
}

.scroll-top-btn svg {
    width: 20px;
    height: 20px;
}

/* Small Mobile (up to 568px) */
@media (max-width: 568px) {
    .features-list {
        grid-template-columns: 1fr;
    }
}
/* Small Mobile (up to 420px) */
@media (max-width: 420px) {
    .hero-title {
        font-size: 28px;
    }

    .site-title {
        font-size: var(--space-md);
    }

    .header-inner {
        padding: 0 var(--space-xs);
        gap: 4px;
        height: 100%;
    }

    .site-branding img,
    .site-logo {
        max-height: 50px;
    }

    .brand-link {
        gap: 4px;
    }

    .brand-line {
        font-size: 16px;
    }

    .brand-line-light {
        font-size: 16px;
        letter-spacing: 0.3em;
    }

    .nav-toggle {
        width: 40px;
        height: 40px;
    }
}

/* Tablet: 600px and up */
@media (min-width: 600px) {
    .hero-title {
        font-size: 38px;
    }
    .about-content h2 {
        font-size: 32px;
    }

    .section-title {
        font-size: 32px;
    }

    .why-order-item {
        gap: var(--space-lg);
        padding: var(--space-lg);
    }

    .why-order-icon {
        width: 60px;
        height: 60px;
    }

    .why-order-icon svg {
        width: 30px;
        height: 30px;
    }

    .why-order-content h3 {
        font-size: 20px;
    }

    .why-order-content p {
        font-size: 15px;
    }

    .about-image {
        height: 400px;
    }

    .services-grid,
    .projects-grid,
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }

    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-xl);
    }

    .door-product-card .window-image,
    .door-product-card .project-image {
        height: 350px;
    }
}

/* Tablet Landscape / Small Desktop: 768px and up */
@media (min-width: 768px) {
    .header-inner {
        padding: var(--space-lg) var(--space-xl);
    }

    .site-title {
        font-size: 20px;
    }

    .content-section {
        padding: var(--space-3xl) var(--space-2xl);
    }

    .hero-section {
        padding: 200px var(--space-2xl) 140px;
        background-attachment: fixed;
    }

    .button {
        padding: 18px 45px;
        font-size: var(--space-md);
    }

    .contact-form {
        padding: 50px;
    }

    .brand-link {
        gap: var(--space-xs);
    }

    .brand-line {
        font-size: 20px;
    }

    .brand-line-light {
        font-size: 20px;
        letter-spacing: 0.8em;
    }

    .scroll-top-btn {
        width: 50px;
        height: 50px;
        bottom: var(--space-xl);
        right: var(--space-xl);
    }

    .scroll-top-btn svg {
        width: 24px;
        height: 24px;
    }

    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: var(--space-3xl);
    }
}

/* Desktop: 1040px and up - Navigation becomes horizontal */
@media (min-width: 1040px) {
    .nav-toggle {
        display: none;
    }

    .main-navigation ul {
        display: flex;
        flex-direction: row;
        position: static;
        background: none;
        box-shadow: none;
        border: none;
        padding: 0;
        width: auto;
        max-width: none;
        max-height: none;
        overflow: visible;
        animation: none;
    }

    .main-navigation li {
        width: auto;
        border-bottom: none;
    }

    .main-navigation a {
        padding: var(--space-sm) var(--space-lg);
        font-size: 15px;
        width: auto;
    }

    .main-navigation .cta-button {
        margin-left: var(--space-md);
        margin-top: 0;
        text-align: left;
        display: inline-block;
    }

    .main-navigation .has-submenu > a {
        padding-right: var(--space-lg);
    }

    .main-navigation .submenu-toggle {
        display: none;
    }

    .main-navigation .submenu {
        position: absolute;
        display: none;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3), 0 4px 12px rgba(0, 0, 0, 0.2);
        border-radius: var(--radius-xs);
        background-color: var(--header-bg);
        border: 1px solid var(--header-footer-border);
        padding: var(--space-xs) 0;
        width: auto;
        min-width: 220px;
    }

    .main-navigation .has-submenu > a::after {
        content: "▾";
        transform: translateY(1px);
        margin-left: 0;
        font-size: 12px;
    }

    .main-navigation .has-submenu.open > a::after {
        transform: rotate(180deg);
    }

    .main-navigation .submenu li {
        border-bottom: none;
    }

    .main-navigation .submenu li a {
        padding: 10px var(--space-md);
        white-space: nowrap;
    }

    .site-branding {
        flex: 0 1 auto;
    }

    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: var(--space-3xl);
    }

    .services-grid,
    .projects-grid,
    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .why-order-list {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2xl);
    }

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-4xl);
    }

    .about-image {
        height: 550px;
    }

    .door-product-card {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }

    .door-product-card .window-image,
    .door-product-card .project-image {
        height: 400px;
    }
}

/* Large Desktop: 1024px and up */
@media (min-width: 1024px) {
    .header-inner {
        padding: var(--space-lg) var(--space-xl);
        gap: var(--space-sm);
    }

    .main-navigation a {
        padding: var(--space-sm) var(--space-md);
        font-size: 15px;
    }

    .services-grid,
    .projects-grid,
    .benefits-grid {
        gap: var(--space-xl);
    }

    .partners-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 50px;
    }
}

/* Extra Large Desktop: 1200px and up */
@media (min-width: 1200px) {
    .hero-title {
        font-size: 60px;
    }

    .section-title {
        font-size: 38px;
    }

    .hero-description {
        font-size: 19px;
    }
}

/* ============================================
   Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .hero-media .hero-video {
        display: none;
    }

    * {
        animation: none !important;
        transition: none !important;
    }

    .scroll-top-btn {
        transition: opacity var(--transition-base), visibility var(--transition-base);
    }

    .content-section,
    .section-header,
    .project-card,
    .door-product-card,
    .service-box,
    .benefit-box,
    .feature-item,
    .partner-logo {
        opacity: 1;
        transform: none;
    }
}