/* ==========================================================================
   CSS VARIABLES & RESET
   ========================================================================== */
:root {
    /* Colors */
    --clr-black: #0a0a0a;
    --clr-black-light: #161616;
    --clr-white: #ffffff;
    --clr-white-dark: #f5f5f7;
    --clr-primary: #1DA1F2;
    --clr-primary-hover: #1681c4;
    --clr-border: rgba(255, 255, 255, 0.1);
    --clr-border-dark: rgba(0, 0, 0, 0.1);
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-display: 'Playfair Display', serif;
    
    /* Spacing */
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    --space-xxl: 12rem;
    
    /* Transitions */
    --trans-fast: 0.2s ease;
    --trans-base: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --trans-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--clr-black);
    background-color: var(--clr-white);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 500;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

p {
    color: inherit;
    opacity: 0.8;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ==========================================================================
   UTILITIES & LAYOUT
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 5%;
}

.section-light {
    background-color: var(--clr-white);
    color: var(--clr-black);
    padding: var(--space-xxl) 0;
}

.section-dark {
    background-color: var(--clr-black);
    color: var(--clr-white);
    padding: var(--space-xxl) 0;
}

.text-center { text-align: center; }
.mt-large { margin-top: var(--space-xl); }

.border-top {
    border-top: 1px solid var(--clr-border);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 0;
    transition: var(--trans-base);
    cursor: pointer;
    border: 1px solid transparent;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--clr-white);
    border-color: var(--clr-white);
}

.btn-secondary:hover {
    background-color: var(--clr-white);
    color: var(--clr-black);
}

.btn-full {
    width: 100%;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    z-index: 100;
    transition: var(--trans-base);
}

.navbar.scrolled {
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--clr-border);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    max-width: 1440px;
    margin: 0 auto;
}

.logo {
    display: flex;
    flex-direction: column;
    color: var(--clr-white);
    z-index: 101;
}

.logo-ultra {
    font-family: var(--font-primary);
    font-weight: 600;
    letter-spacing: 0.1em;
    font-size: 1.2rem;
    line-height: 1;
}

.logo-damp {
    font-family: var(--font-primary);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    opacity: 0.7;
    margin-top: 0.2rem;
}

.nav-links {
    display: flex;
    gap: 3rem;
}

.nav-links a {
    color: var(--clr-white);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 1px;
    background-color: var(--clr-primary);
    transition: var(--trans-base);
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 101;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--clr-white);
    position: absolute;
    transition: var(--trans-base);
}

.mobile-menu-toggle span:first-child { top: 0; }
.mobile-menu-toggle span:last-child { bottom: 0; }

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transform: scale(1.05);
    animation: zoomOut 10s ease-out forwards;
}

@keyframes zoomOut {
    to { transform: scale(1); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.4) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    color: var(--clr-white);
    max-width: 800px;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5.5rem);
    margin-bottom: 2rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 300;
    margin-bottom: 3rem;
    max-width: 600px;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

/* ==========================================================================
   TRUST STRIP
   ========================================================================== */
.trust-strip {
    background-color: var(--clr-black-light);
    color: var(--clr-white);
    padding: 2rem 0;
    border-top: 1px solid var(--clr-border);
    border-bottom: 1px solid var(--clr-border);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.trust-icon {
    color: var(--clr-primary);
    font-size: 1.2rem;
}

/* ==========================================================================
   SERVICES (EDITORIAL)
   ========================================================================== */
.section-header {
    margin-bottom: var(--space-xl);
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    opacity: 0.6;
}

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

.service-card {
    display: block;
    position: relative;
    overflow: hidden;
    group: hover;
}

.service-img-wrapper {
    overflow: hidden;
    background: #eee;
}

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

.service-card:hover .service-img {
    transform: scale(1.03);
}

.service-content {
    padding: 2rem 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 1px solid var(--clr-border-dark);
}

.service-title {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.service-desc {
    font-size: 1rem;
    opacity: 0.6;
}

.service-arrow {
    font-size: 1.5rem;
    transition: transform var(--trans-fast);
}

.service-card:hover .service-arrow {
    transform: translateX(10px);
}

.featured-service .service-img-wrapper {
    aspect-ratio: 4/5;
}

.service-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.aspect-portrait .service-img-wrapper {
    aspect-ratio: 1/1;
}

.aspect-landscape .service-img-wrapper {
    aspect-ratio: 16/9;
}

/* ==========================================================================
   BEFORE & AFTER
   ========================================================================== */
.slider-container {
    position: relative;
    width: 100%;
    max-width: 1200px; /* Increased size */
    margin: 0 auto;
    aspect-ratio: 21/9; /* Wider, more cinematic */
    overflow: hidden;
    cursor: ew-resize;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.ba-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.ba-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    pointer-events: none;
}

.ba-before {
    width: 50%; /* Initial position */
    border-right: 2px solid var(--clr-primary);
    overflow: hidden;
    z-index: 2;
}

/* JS sets the explicit width of this image to match the container width */
.ba-before img {
    max-width: none;
}

.ba-label {
    position: absolute;
    bottom: 2rem;
    padding: 0.5rem 1.5rem;
    background: var(--clr-black);
    color: var(--clr-white);
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    z-index: 3;
}

.label-after { right: 2rem; }
.label-before { left: 2rem; }

.ba-slider {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background: var(--clr-primary);
    transform: translateX(-50%);
    pointer-events: none;
    z-index: 4;
}

.ba-slider-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: var(--clr-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(29, 161, 242, 0.4);
    color: var(--clr-white);
}

.ba-slider-btn svg {
    stroke: var(--clr-white);
}

/* ==========================================================================
   WHY CHOOSE US
   ========================================================================== */
.why-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-xl);
    align-items: center;
}

.huge-type {
    display: flex;
    flex-direction: column;
    font-family: var(--font-display);
    font-size: clamp(8rem, 15vw, 15rem);
    line-height: 0.8;
    color: var(--clr-black);
}

.huge-sub {
    font-family: var(--font-primary);
    font-size: 2rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    margin-top: 1rem;
    padding-left: 0.5rem;
}

.why-desc {
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
    max-width: 500px;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.feature-item {
    border-top: 1px solid var(--clr-border-dark);
    padding-top: 1rem;
}

.feature-title {
    font-family: var(--font-primary);
    font-size: 1.1rem;
}

/* ==========================================================================
   WARNING SIGNS
   ========================================================================== */
.warning-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.warning-card {
    padding: 2.5rem 2rem;
    background-color: var(--clr-black-light);
    border: 1px solid var(--clr-border);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.warning-card:hover {
    background-color: var(--clr-black);
    border-color: var(--clr-primary);
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.warning-icon {
    color: var(--clr-primary);
    margin-bottom: 1.5rem;
}

.warning-title {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.warning-desc {
    font-size: 0.95rem;
    opacity: 0.7;
    line-height: 1.4;
}

/* ==========================================================================
   FEATURED PROJECTS (EDITORIAL GRID)
   ========================================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    grid-auto-rows: 350px;
    gap: 2rem;
}

.project-item {
    position: relative;
    overflow: hidden;
    background: var(--clr-black-light);
}

.project-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-item:hover img {
    transform: scale(1.08);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: 3rem 2rem;
    color: var(--clr-white);
    opacity: 0;
    transition: opacity var(--trans-base);
}

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

.project-overlay h4 {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    font-weight: 500;
    transform: translateY(20px);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-item:hover .project-overlay h4 {
    transform: translateY(0);
}

.project-main { 
    grid-row: span 2; 
}
.project-side { 
    grid-row: span 1; 
}

/* ==========================================================================
   REVIEWS & PROCESS
   ========================================================================== */
.mx-auto { margin: 0 auto; }

.review-placeholder-card {
    max-width: 800px;
    padding: 4rem;
    background: var(--clr-black-light);
    border: 1px solid var(--clr-border);
    position: relative;
}

.review-demo-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--clr-primary);
    color: var(--clr-white);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.3rem 1rem;
    letter-spacing: 0.1em;
}

.review-stars {
    color: var(--clr-primary);
    font-size: 1.5rem;
    letter-spacing: 0.2em;
    margin-bottom: 2rem;
}

.review-quote {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    line-height: 1.4;
    margin-bottom: 3rem;
    font-style: italic;
    color: var(--clr-white);
}

.review-author {
    font-weight: 600;
    font-size: 1.1rem;
}

.review-meta {
    font-size: 0.9rem;
    opacity: 0.5;
    margin-top: 0.2rem;
}

.timeline {
    display: flex;
    justify-content: space-between;
    position: relative;
    padding-top: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 2.5rem;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--clr-border-dark);
    z-index: 1;
}

.timeline-step {
    position: relative;
    z-index: 2;
    background: var(--clr-white);
    padding: 0 1rem;
    text-align: center;
}

.step-num {
    font-size: 0.9rem;
    color: var(--clr-primary);
    font-weight: 600;
    margin-bottom: 1rem;
}

.step-title {
    font-family: var(--font-primary);
    font-size: 1.2rem;
}

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact-split {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-xl);
}

.contact-subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
    opacity: 0.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.contact-link-wrapper {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.5;
    margin-bottom: 0.5rem;
}

.contact-link {
    font-family: var(--font-display);
    transition: color var(--trans-fast);
    line-height: 1;
}

.link-huge {
    font-size: clamp(3rem, 5vw, 4.5rem);
}

.link-large {
    font-size: clamp(2rem, 3vw, 3rem);
}

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

.mt-4 { margin-top: 2rem; }

.contact-extra {
    margin-top: 2rem;
    font-size: 1rem;
    opacity: 0.6;
}

.social-link {
    display: inline-block;
    margin-top: 1rem;
    text-decoration: underline;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.7;
}

.form-group input,
.form-group select {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--clr-border);
    padding: 1rem 0;
    color: var(--clr-white);
    font-family: var(--font-primary);
    font-size: 1.2rem;
    transition: var(--trans-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--clr-primary);
}

.form-group select {
    appearance: none;
    cursor: pointer;
}

.form-group select option {
    background: var(--clr-black);
    color: var(--clr-white);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer-grid {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 2rem;
}

.footer-copy {
    margin-top: 1rem;
    font-size: 0.9rem;
    opacity: 0.5;
}

.footer-nav {
    display: flex;
    gap: 2rem;
}

.footer-nav a {
    opacity: 0.7;
    transition: var(--trans-fast);
}

.footer-nav a:hover {
    opacity: 1;
    color: var(--clr-primary);
}

.footer-legal {
    font-size: 0.8rem;
    opacity: 0.5;
}

/* ==========================================================================
   ANIMATIONS (Intersection Observer)
   ========================================================================== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-up.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; }

/* ==========================================================================
   MEDIA QUERIES (Mobile Perfection)
   ========================================================================== */
@media (max-width: 1024px) {
    .services-editorial,
    .why-grid,
    .contact-split,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-main, .project-side {
        grid-row: span 1;
    }
    
    .project-item {
        height: 400px;
    }
    
    .trust-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links, .nav-btn {
        display: none; /* In a real app, this would be a full-screen mobile menu */
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .timeline {
        flex-direction: column;
        gap: 2rem;
    }
    
    .timeline::before {
        display: none;
    }
    
    .footer-grid {
        flex-direction: column;
        gap: 2rem;
    }
    
    .trust-grid {
        grid-template-columns: 1fr;
    }
    
    .slider-container {
        aspect-ratio: 4/3;
    }
}