:root {
    --brand-red: #E02828;
    --brand-red-hover: #C01E1E;
    --dark-bg: #111111;
    --darker-bg: #0A0A0A;
    --dark-accents: #1A1A1A;
    --text-main: #333333;
    --text-light: #F5F5F5;
    --text-muted: #888888;
    --white: #FFFFFF;
    
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    
    --transition-standard: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-slow: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--white);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: inherit;
}

.text-red { color: var(--brand-red); }
.text-light { color: var(--text-light); }
.text-center { text-align: center; }

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: 1.5rem; }

p { margin-bottom: 1.5rem; }
a { text-decoration: none; color: inherit; transition: var(--transition-standard); }

/* Layout & Utility */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 100px 0;
}

.bg-dark { background-color: var(--dark-bg); }
.bg-darker { background-color: var(--darker-bg); }
.bg-dark-accents { background-color: var(--dark-accents); }

.section-tag {
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--brand-red);
    margin-bottom: 0.5rem;
    display: block;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* Buttons */
.btn-primary, .btn-outline {
    display: inline-block;
    padding: 12px 28px;
    font-weight: 500;
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.875rem;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-standard);
    text-align: center;
}

.btn-primary {
    background-color: var(--brand-red);
    color: var(--white);
    border: 2px solid var(--brand-red);
}

.btn-primary:hover {
    background-color: var(--brand-red-hover);
    border-color: var(--brand-red-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(224, 40, 40, 0.2);
}

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

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

.btn-large {
    padding: 16px 36px;
    font-size: 1rem;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 24px 0;
    transition: var(--transition-standard);
    color: var(--white);
}

.navbar.scrolled {
    padding: 16px 0;
    background-color: rgba(17, 17, 17, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo a {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo span {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 3px;
    margin-top: 4px;
    color: rgba(255, 255, 255, 0.8);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a:not(.btn-primary) {
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav-links a:not(.btn-primary)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--brand-red);
    transition: var(--transition-standard);
}

.nav-links a:not(.btn-primary):hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--white);
    transition: var(--transition-standard);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    color: var(--white);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center 30%;
    background-repeat: no-repeat;
    transform: scale(1.05);
    animation: slowZoom 20s infinite alternate;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.4) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    margin: 0; /* Left align initially in container */
}

.hero-title {
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 600px;
    margin-bottom: 40px;
    color: rgba(255, 255, 255, 0.9);
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

@keyframes slowZoom {
    from { transform: scale(1.05); }
    to { transform: scale(1.15); }
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.main-about-img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.about-image {
    position: relative;
}

.experience-badge {
    position: absolute;
    bottom: -30px;
    left: -30px;
    background-color: var(--brand-red);
    color: var(--white);
    padding: 30px;
    border-radius: 50%;
    width: 150px;
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    line-height: 1.2;
    box-shadow: 0 10px 30px rgba(224, 40, 40, 0.3);
}

.stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #eee;
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--brand-red);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    font-weight: 500;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background-color: var(--dark-accents);
    padding: 50px 40px;
    border-radius: 8px;
    transition: var(--transition-standard);
    border: 1px solid rgba(255,255,255,0.05);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(224, 40, 40, 0.3);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.service-icon {
    color: var(--brand-red);
    margin-bottom: 24px;
}

.service-icon svg {
    width: 48px;
    height: 48px;
}

.service-card h3 {
    margin-bottom: 16px;
    font-size: 1.5rem;
}

.service-card p {
    color: rgba(255,255,255,0.7);
    margin-bottom: 0;
}

/* Gallery Section */
.gallery-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 50px;
    flex-wrap: wrap;
    gap: 20px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    grid-auto-rows: 250px;
    gap: 20px;
    grid-auto-flow: dense;
}

/* Styling for masonry-like grid */
.gallery-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    background-color: #f0f0f0; /* skeleton color */
}

.gallery-item[style*="display: none"] {
    display: none !important;
}

/* Explicit classes for masonry layout (managed by JS instead of nth-child) */
.gallery-item.size-large {
    grid-column: span 2;
    grid-row: span 2;
}

.gallery-item.size-tall {
    grid-row: span 2;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    opacity: 0; /* for lazy load fade */
}

.gallery-item img.loaded {
    opacity: 1;
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 100%);
    opacity: 0;
    transition: var(--transition-standard);
    display: flex;
    align-items: flex-end;
    padding: 24px;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.zoom-icon {
    color: white;
    background-color: var(--brand-red);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateY(20px);
    transition: var(--transition-standard);
}

.gallery-item:hover .zoom-icon {
    transform: translateY(0);
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-desc {
    color: rgba(255,255,255,0.7);
    margin-bottom: 40px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.contact-method:last-child {
    border-bottom: none;
}

.contact-method .icon {
    color: var(--brand-red);
}

.contact-method strong {
    display: block;
    margin-bottom: 4px;
    font-family: var(--font-heading);
    letter-spacing: 1px;
}

.contact-method a, .contact-method address {
    color: rgba(255,255,255,0.7);
    font-style: normal;
}

.contact-method a:hover {
    color: var(--brand-red);
}

.accreditation-card {
    background-color: var(--darker-bg);
    padding: 40px;
    border-radius: 8px;
    height: 100%;
    border: 1px solid rgba(255,255,255,0.05);
}

.badges {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 30px;
}

.badge {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background-color: rgba(255,255,255,0.05);
    border-radius: 8px;
    font-weight: 500;
}

.badge-icon {
    background-color: var(--brand-red);
    color: white;
    padding: 10px 15px;
    border-radius: 4px;
    font-weight: bold;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.gas-icon {
    background-color: #f7d002; /* Gas safe yellow */
    color: black;
}

/* Footer */
.site-footer {
    padding: 40px 0;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-logo h3 {
    margin-bottom: 4px;
    font-size: 1.25rem;
}

.footer-logo p {
    margin-bottom: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.footer-links p {
    margin-bottom: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Animations */
.scroll-fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.scroll-fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.lightbox-content-wrapper {
    max-width: 90%;
    max-height: 90vh;
}

.lightbox-img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 0 50px rgba(0,0,0,0.5);
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.lightbox.active .lightbox-img {
    transform: scale(1);
}

.close-lightbox {
    position: absolute;
    top: 20px;
    right: 30px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
    z-index: 2001;
}

.close-lightbox:hover,
.close-lightbox:focus {
    color: var(--brand-red);
    text-decoration: none;
    cursor: pointer;
}

.lightbox-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2001;
    transition: var(--transition-standard);
}

.lightbox-nav-btn:hover {
    background: var(--brand-red);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

/* Responsive */
@media (max-width: 992px) {
    .about-grid, .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .experience-badge {
        width: 120px;
        height: 120px;
        font-size: 0.9rem;
        padding: 20px;
    }
}

@media (max-width: 768px) {
    .section { padding: 80px 0; }
    
    .mobile-menu-btn { display: flex; }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--darker-bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: right 0.4s ease;
        padding: 40px;
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    }
    
    .nav-links.active { right: 0; }
    
    .nav-links form, .nav-links a { width: 100%; text-align: center; }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        grid-auto-rows: 200px;
    }
    
    .gallery-item.size-large { grid-column: span 1; grid-row: span 1; }
    .gallery-item.size-tall { grid-row: span 1; }
}

@media (max-width: 480px) {
    .stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
}