/* ==========================================================================
   ETRNL VISUAL CO. — DESIGN SYSTEM & STYLESHEET
   Theme: DARK / CINEMATIC / PREMIUM
   ========================================================================== */

/* --- Fonts & Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Manrope:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Color Palette */
    --bg-primary: #080808;
    --bg-secondary: #111111;
    --bg-card: #151515;
    --text-primary: #F5F5F5;
    --text-secondary: #A0A0A0;
    --text-muted: #666666;
    --accent: #E31B23; /* ETRNL Red */
    --accent-rgb: 227, 27, 35;
    --border-color: #222222;
    --border-hover: #444444;

    /* Fonts */
    --font-heading: 'Manrope', 'Inter', -apple-system, sans-serif;
    --font-body: 'Inter', -apple-system, sans-serif;

    /* Transition defaults */
    --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-quick: all 0.2s ease;
}

/* --- Base Reset --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-y: auto; /* Enable vertical scroll on main landing */
    overflow-x: hidden;
}

body {
    overflow-x: hidden;
    background-color: var(--bg-primary);
}

/* --- Scrollbar Customization --- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: #222222;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* --- Custom Cursor --- */
.custom-cursor {
    width: 8px;
    height: 8px;
    background-color: var(--accent);
    border-radius: 50%;
    position: fixed;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 9999;
    transition: width 0.3s ease, height 0.3s ease, background-color 0.3s ease;
}

.custom-cursor-follower {
    width: 40px;
    height: 40px;
    border: 1px solid rgba(245, 245, 245, 0.15);
    border-radius: 50%;
    position: fixed;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 9998;
    transition: transform 0.1s ease, width 0.3s ease, height 0.3s ease, border-color 0.3s ease, background-color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: transparent;
    font-family: var(--font-heading);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

/* Cursor state on hover */
body.hover-interactive .custom-cursor {
    background-color: transparent;
}
body.hover-interactive .custom-cursor-follower {
    width: 80px;
    height: 80px;
    background-color: rgba(227, 27, 35, 0.1);
    border-color: var(--accent);
    color: var(--text-primary);
}

@media (max-width: 1024px) {
    .custom-cursor, .custom-cursor-follower {
        display: none !important;
    }
}

/* --- Layout Containers --- */
.container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 4rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}

section {
    padding: 8rem 0;
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    section {
        padding: 5rem 0;
    }
}

/* --- Typography System --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--text-primary);
}

.huge-headline {
    font-size: clamp(3rem, 7vw, 7.5rem);
    text-transform: uppercase;
    line-height: 0.9;
    font-weight: 800;
}

.section-label {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.5rem;
    display: inline-block;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    text-transform: uppercase;
    margin-bottom: 3rem;
    line-height: 1.1;
}

p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    font-weight: 300;
}

.lead-text {
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    line-height: 1.4;
    color: var(--text-primary);
    font-weight: 400;
}

.accent-text {
    color: var(--accent);
}

/* --- Button Styling --- */
.btn-group {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-top: 2.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1.2rem 2.5rem;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-decoration: none;
    border-radius: 0;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-primary {
    background-color: var(--text-primary);
    color: var(--bg-primary);
    border: 1px solid var(--text-primary);
}

.btn-primary:hover {
    background-color: var(--accent);
    border-color: var(--accent);
    color: var(--text-primary);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--text-primary);
}

.btn-accent {
    background-color: var(--accent);
    color: var(--text-primary);
    border: 1px solid var(--accent);
}

.btn-accent:hover {
    background-color: transparent;
    border-color: var(--text-primary);
}

/* --- Navigation --- */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 3000; /* High z-index to lock above all slide-up overlay page views */
    background-color: rgba(8, 8, 8, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(245, 245, 245, 0.04);
    padding: 1rem 0;
    transition: var(--transition-quick);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-quick);
}

.logo:hover {
    color: var(--accent);
}

.logo-img-wrap {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    height: 48px;
}

.header-logo-img {
    height: 100%;
    width: auto;
    display: block;
    transition: var(--transition-quick);
}

.logo-img-wrap:hover .header-logo-img {
    opacity: 0.8;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-quick);
}

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

/* Mobile Nav Button */
.menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 3002;
}

.menu-btn-line {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    margin: 5px 0;
    transition: var(--transition-quick);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .menu-btn {
        display: block;
    }
}

/* Fullscreen Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-primary);
    z-index: 3001; /* Must sit under hamburger button but above overlays */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}

.mobile-menu-link {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--text-primary);
    letter-spacing: 0.05em;
    transition: var(--transition-quick);
}

.mobile-menu-link:hover {
    color: var(--accent);
}

/* Hamburger transition on active */
.menu-btn.active .menu-btn-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.menu-btn.active .menu-btn-line:nth-child(2) {
    opacity: 0;
}
.menu-btn.active .menu-btn-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero Section --- */
.hero {
    height: 100vh;
    padding: 0;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-media {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4) contrast(1.1);
    transform: scale(1.05);
    animation: kenBurns 20s infinite alternate ease-in-out;
}

@keyframes kenBurns {
    0% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1.12) translate(1%, 1%);
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(8, 8, 8, 0.4), var(--bg-primary) 95%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    width: 100%;
    margin-top: 4rem;
}

.hero-sub {
    margin-top: 2rem;
    max-width: 600px;
}

/* --- Section: Who We Are --- */
.who-we-are-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

@media (max-width: 768px) {
    .who-we-are-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.who-we-are-right {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.who-we-are-pillars {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.pillar-item h4 {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.pillar-item p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* --- Section: Services --- */
.services-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.service-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 3rem;
    display: grid;
    grid-template-columns: 1.5fr 2fr 1fr;
    gap: 2rem;
    align-items: center;
    transition: var(--transition-smooth);
    text-decoration: none;
    cursor: pointer;
}

.service-card:hover {
    border-color: var(--accent);
    background-color: var(--bg-card);
}

.service-card-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.service-num {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--accent);
}

.service-card h3 {
    font-size: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.service-card-image-wrap {
    width: 100%;
    height: 140px;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-color);
}

.service-card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.6) grayscale(20%);
    transition: var(--transition-smooth);
}

.service-card:hover .service-card-image {
    transform: scale(1.1);
    filter: brightness(0.95) grayscale(0%);
}

.service-arrow {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.service-arrow svg {
    width: 32px;
    height: 32px;
    fill: var(--text-secondary);
    transition: var(--transition-smooth);
}

.service-card:hover .service-arrow svg {
    fill: var(--accent);
    transform: translateX(8px);
}

@media (max-width: 768px) {
    .service-card {
        grid-template-columns: 1fr;
        padding: 2rem;
        gap: 1.5rem;
    }
    .service-arrow {
        justify-content: flex-start;
    }
    .service-card-image-wrap {
        height: 180px;
    }
}

/* --- Section: Work / Portfolio --- */
.work-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 3rem;
}

.project-card {
    grid-column: span 6;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    cursor: pointer;
}

/* Large featured layout */
.project-card.featured {
    grid-column: span 12;
}

/* Grid variation logic */
.project-card.portrait {
    grid-column: span 5;
}
.project-card.landscape {
    grid-column: span 7;
}

.project-media {
    width: 100%;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-color);
}

.project-card.featured .project-media {
    aspect-ratio: 16/9;
}
.project-card.portrait .project-media {
    aspect-ratio: 3/4;
}
.project-card:not(.featured):not(.portrait) .project-media {
    aspect-ratio: 4/3;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
    filter: brightness(0.85);
}

.project-card:hover .project-img {
    transform: scale(1.05);
    filter: brightness(1);
}

.project-info {
    margin-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.project-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.project-title {
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: -0.01em;
}

.project-meta {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 500;
}

.project-num {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 800;
    color: rgba(245, 245, 245, 0.2);
}

@media (max-width: 1024px) {
    .project-card.portrait, .project-card.landscape {
        grid-column: span 6;
    }
}

@media (max-width: 768px) {
    .work-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .project-card {
        grid-column: span 12 !important;
    }
    .project-card.portrait .project-media {
        aspect-ratio: 1;
    }
}

/* --- Section: About BTS --- */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 6rem;
    align-items: center;
}

.about-visual {
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

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

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

/* --- Section: Philosophy --- */
.philosophy {
    text-align: center;
    background-color: var(--bg-secondary);
}

.philosophy-grid {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 4rem;
}

.philosophy-word {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 6rem);
    font-weight: 800;
    text-transform: uppercase;
    color: transparent;
    -webkit-text-stroke: 1px rgba(245, 245, 245, 0.15);
    transition: var(--transition-smooth);
}

.philosophy-word:hover {
    color: var(--text-primary);
    -webkit-text-stroke: 1px var(--text-primary);
    transform: scale(1.05);
}

.philosophy-copy {
    max-width: 600px;
    margin: 0 auto;
}

.philosophy-copy h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

/* --- Section: Process --- */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.process-step {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.process-num {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent);
}

.process-step h3 {
    font-size: 1.5rem;
    text-transform: uppercase;
}

.process-step p {
    font-size: 0.95rem;
}

@media (max-width: 900px) {
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
}

@media (max-width: 550px) {
    .process-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

/* --- Section: Why ETRNL --- */
.why-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 6rem;
}

.why-left h3 {
    font-size: clamp(2rem, 3.5vw, 3rem);
    text-transform: uppercase;
    margin-bottom: 2rem;
}

.why-points {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.why-point h4 {
    font-size: 1.1rem;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    letter-spacing: 0.05em;
}

.why-point p {
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .why-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .why-points {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* --- Section: Contact --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 1.5fr;
    gap: 6rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 3rem;
}

.contact-item h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--accent);
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.contact-item a, .contact-item p {
    font-size: 1.4rem;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 300;
}

.contact-item a:hover {
    color: var(--accent);
}

.contact-social-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
}

.contact-social-link {
    font-size: 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    text-transform: uppercase;
    font-weight: 600;
    transition: var(--transition-quick);
}

.contact-social-link:hover {
    color: var(--accent);
}

/* Onboarding Form */
.onboarding-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.form-group-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

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

.form-group label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    font-weight: 600;
}

.form-input, .form-textarea, .form-select {
    width: 100%;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 1rem 1.2rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    border-radius: 0;
    transition: var(--transition-quick);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
    border-color: var(--accent);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-feedback {
    font-size: 0.95rem;
    padding: 1rem;
    border: 1px solid transparent;
    display: none;
}
.form-feedback.success {
    background-color: rgba(0, 200, 100, 0.1);
    border-color: rgb(0, 200, 100);
    color: #e0ffe0;
    display: block;
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    .form-group-row {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* --- Section: Footer --- */
footer {
    padding: 5rem 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 10;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 4rem;
}

.footer-logo-block {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-tagline {
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    color: var(--accent);
    font-weight: 800;
    text-transform: uppercase;
}

.footer-links-block {
    display: flex;
    gap: 6rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.footer-link {
    font-size: 0.95rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-quick);
}

.footer-link:hover {
    color: var(--accent);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}

.footer-bottom p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .footer-top {
        flex-direction: column;
        gap: 3rem;
    }
    .footer-links-block {
        gap: 3rem;
        width: 100%;
        justify-content: space-between;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
}

/* --- cinematic section overlay --- */
.section-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
    z-index: 1500;
    transform: translateY(100%);
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

.section-overlay.active {
    transform: translateY(0);
}

.overlay-scroll-container {
    flex: 1;
    overflow-y: auto;
    width: 100%;
    height: 100%;
}

.overlay-close {
    position: fixed;
    top: 2.5rem;
    right: 2.5rem;
    z-index: 1600;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.overlay-close-circle {
    width: 50px;
    height: 50px;
    border: 1px solid rgba(245, 245, 245, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: var(--transition-smooth);
}

.overlay-close:hover .overlay-close-circle {
    border-color: var(--accent);
    background-color: rgba(227, 27, 35, 0.1);
    color: var(--accent);
}

.overlay-close svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

/* --- Project Detail View overlay --- */
.project-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
    z-index: 2000; /* Must sit above standard section overlays (z-index 1500) */
    transform: translateY(100%);
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
}

.project-overlay.active {
    transform: translateY(0);
}

.project-overlay-close {
    position: fixed;
    top: 2.5rem;
    right: 2.5rem;
    z-index: 2100;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.project-overlay-close-circle {
    width: 50px;
    height: 50px;
    border: 1px solid rgba(245, 245, 245, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: var(--transition-smooth);
}

.project-overlay-close:hover .project-overlay-close-circle {
    border-color: var(--accent);
    background-color: rgba(227, 27, 35, 0.1);
    color: var(--accent);
}

.project-overlay-close svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.project-hero {
    height: 70vh;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.project-hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.6);
}

.project-hero-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 4rem 0;
    background: linear-gradient(to top, var(--bg-primary), transparent);
}

.project-overlay-content {
    padding: 5rem 0;
}

.project-summary-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 6rem;
    margin-bottom: 5rem;
}

.project-desc-col {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.project-details-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    border-left: 1px solid var(--border-color);
    padding-left: 3rem;
}

.project-detail-meta h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.project-detail-meta p {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 400;
}

.project-services-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.project-service-tag {
    font-size: 0.85rem;
    padding: 0.4rem 1rem;
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 600;
}

.project-results-box {
    background-color: var(--bg-secondary);
    border: 1px solid var(--accent);
    padding: 2.5rem;
    margin-top: 1.5rem;
}

.project-results-box h4 {
    font-size: 0.85rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.project-results-box p {
    font-size: 1.4rem;
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.4;
}

.project-gallery-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 5rem;
}

.project-gallery-img-wrap {
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.project-gallery-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.9);
    transition: var(--transition-smooth);
}

.project-gallery-img-wrap:hover .project-gallery-img {
    transform: scale(1.03);
    filter: brightness(1);
}

.project-next-footer {
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-top: 6rem;
}

.project-next-footer h2 {
    font-size: clamp(2rem, 5vw, 4.5rem);
    text-transform: uppercase;
    margin-bottom: 2rem;
}

@media (max-width: 900px) {
    .project-summary-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    .project-details-list {
        padding-left: 0;
        border-left: none;
        border-top: 1px solid var(--border-color);
        padding-top: 3rem;
    }
    .project-gallery-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .project-overlay-close, .overlay-close {
        top: 1.5rem;
        right: 1.5rem;
    }
    .project-overlay-close-circle, .overlay-close-circle {
        width: 40px;
        height: 40px;
    }
    .project-hero {
        height: 50vh;
    }
}

/* --- Sticky Bottom CTA for Mobile --- */
.sticky-mobile-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: rgba(8, 8, 8, 0.95);
    border-top: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    z-index: 999;
    display: none;
    backdrop-filter: blur(10px);
}

.sticky-mobile-cta .btn {
    width: 100%;
    padding: 1rem;
    font-size: 0.85rem;
}

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

/* --- Lightbox Overlay --- */
.lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(8, 8, 8, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 4000; /* High z-index to sit above overlays (2000) and headers (3000) */
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.lightbox-content {
    max-width: 90%;
    max-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.lightbox-img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
    transform: scale(0.96);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 3rem;
    cursor: pointer;
    line-height: 1;
    transition: var(--transition-quick);
    z-index: 4001;
}

.lightbox-close:hover {
    color: var(--accent);
    transform: rotate(90deg);
}

/* Usability Hover states for clickable gallery items */
.project-gallery-img, .project-hero-img {
    cursor: pointer;
    transition: var(--transition-quick);
}

.project-gallery-img:hover {
    filter: brightness(1.08);
}