/* Modern Design System */
:root {
    --color-primary: #4AAEE6;
    --color-primary-dark: #2980B9;
    --color-primary-light: #E8F4F8;
    --color-gold: #F4C430;
    --color-gold-light: #FFF9E6;
    --color-navy: #1A2332;
    --color-gray-900: #2C3E50;
    --color-gray-700: #4A5568;
    --color-gray-500: #718096;
    --color-gray-300: #CBD5E0;
    --color-gray-100: #F7FAFC;
    --color-white: #FFFFFF;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-gray-900);
    overflow-x: hidden;
    background: var(--color-white);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
}

/* Navigation */
.nav {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    background: transparent;
    z-index: 1000;
    transition: all var(--transition-base);
}

.nav.scrolled {
    position: fixed;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 20px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    line-height: 1;
}

.nav-logo {
    height: 70px;
    width: auto;
    object-fit: contain;
}

.brand-gluck {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-navy);
    letter-spacing: -0.5px;
}

.brand-subtitle {
    font-size: 13px;
    color: var(--color-gray-500);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    text-decoration: none;
    color: var(--color-gray-700);
    font-weight: 500;
    font-size: 15px;
    transition: color var(--transition-fast);
    position: relative;
}

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

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

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

.nav-cta {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.nav-cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-navy);
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-image-dirty {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(226, 232, 240, 0.9) 0%, rgba(203, 213, 224, 0.9) 100%),
                url('/assets/before-dirty-window.jpg') center/cover;
    filter: blur(3px) brightness(0.95);
}

.hero-image-clean {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('/assets/hero-sunlight-windows.jpg') center/cover;
    clip-path: polygon(0 0, 0% 0, 0% 100%, 0 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 60px 32px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 10px 20px;
    border-radius: 50px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 32px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gray-700);
}

.badge-icon {
    font-size: 18px;
}

.hero-title {
    font-size: 72px;
    font-weight: 900;
    line-height: 1.1;
    color: var(--color-navy);
    margin-bottom: 24px;
    text-shadow: 0 2px 20px rgba(255, 255, 255, 0.8);
    letter-spacing: -2px;
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--color-navy);
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
    text-shadow: 0 2px 8px rgba(255, 255, 255, 0.9), 0 0 20px rgba(255, 255, 255, 0.8);
    font-weight: 500;
    background: rgba(255, 255, 255, 0.75);
    padding: 16px 24px;
    border-radius: 12px;
    backdrop-filter: blur(8px);
}

.hero-cta-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    background: var(--color-gray-100);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-large {
    padding: 18px 36px;
    font-size: 18px;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.hero-trust-badges {
    display: flex;
    gap: 32px;
    justify-content: center;
    flex-wrap: wrap;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.trust-icon {
    font-size: 24px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    border-radius: 8px;
    color: var(--color-primary);
}

.trust-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gray-700);
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--color-gray-500);
    font-size: 13px;
    font-weight: 500;
    z-index: 2;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--color-gray-500);
    border-bottom: 2px solid var(--color-gray-500);
    transform: rotate(45deg);
    margin: 12px auto 0;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) rotate(45deg); }
    40% { transform: translateY(-10px) rotate(45deg); }
    60% { transform: translateY(-5px) rotate(45deg); }
}

/* Section Styling */
section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.section-title {
    font-size: 48px;
    font-weight: 800;
    color: var(--color-navy);
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.section-subtitle {
    font-size: 20px;
    color: var(--color-gray-600);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Stats Section */
.stats-section {
    background: var(--color-navy);
    padding: 80px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 60px;
}

.stat-card {
    text-align: center;
    color: var(--color-white);
}

.stat-number {
    font-size: 56px;
    font-weight: 900;
    color: var(--color-gold);
    margin-bottom: 12px;
    line-height: 1;
}

.stat-label {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.service-card {
    background: var(--color-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.service-image {
    position: relative;
    height: 280px;
    overflow: hidden;
}

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

.service-card:hover .service-image img {
    transform: scale(1.1);
}

.service-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
}

.service-content {
    padding: 32px;
}

.service-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 12px;
}

.service-description {
    color: var(--color-gray-600);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-features {
    list-style: none;
}

.service-features li {
    padding: 10px 0;
    padding-left: 28px;
    position: relative;
    color: var(--color-gray-700);
    font-size: 15px;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
    font-size: 18px;
}