/* --- VARIABLES --- */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #fafbfb; 
    --primary: #1a3c34;     /* Oak & River Green */
    --primary-light: #2b574d;     
    --accent: #5e6b66;      /* Slate/grey/green */
    --text-main: #142822;   /* Effectively black with subtle green depth */
    --text-muted: #6b7a75;  
    --border-color: #e8eae9;
    
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;
    
    --ease: cubic-bezier(0.25, 1, 0.5, 1);
}

/* --- RESET & BASE --- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1500px;
    margin: 0 auto;
    padding: 0 6vw;
}

/* --- TYPOGRAPHY UTILS --- */

/* --- NAVIGATION --- */
.main-nav {
    position: fixed;
    top: 0; left: 0; width: 100%;
    padding: 35px 0;
    z-index: 100;
    transition: all 0.5s var(--ease);
    border-bottom: 1px solid transparent;
}
.main-nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1500px;
    margin: 0 auto;
    padding: 0 6vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    height: 96px;
    transition: transform 0.3s var(--ease);
}
.nav-logo:hover { transform: scale(1.02); }

.nav-links {
    display: flex;
    list-style: none;
    gap: 45px;
    align-items: center;
}

.nav-link {
    color: var(--text-main);
    text-decoration: none;
    font-size: 11px;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    font-weight: 500;
    transition: all 0.3s var(--ease);
}
.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-btn {
    border: 1px solid var(--border-color);
    padding: 14px 32px;
    color: var(--text-main);
    text-decoration: none;
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 500;
    transition: all 0.4s var(--ease);
    display: inline-flex; justify-content: center; align-items: center;
}
.nav-btn:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}
.nav-btn.large {
    padding: 20px 45px;
    font-size: 12px;
    margin-top: 50px;
    background: var(--primary);
    color: white;
    border: none;
}
.nav-btn.large:hover {
    background: var(--primary-light);
}

/* --- HERO SECTION --- */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    padding-top: 140px;
    padding-bottom: 80px;
}

.hero-split {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 8vw;
    align-items: center;
}

.hero-content {
    max-width: 800px;
}

.eyebrow-line {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 35px;
}
.eyebrow {
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text-muted);
}
.eyebrow-line .line {
    flex-grow: 1;
    max-width: 60px;
    height: 1px;
    background: var(--border-color);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(3.2rem, 6vw, 6.5rem);
    line-height: 1.05;
    font-weight: 400;
    margin-bottom: 40px;
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--accent);
    max-width: 550px;
    line-height: 1.9;
    margin-bottom: 50px;
    font-weight: 400;
}

.discover-btn {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    color: var(--primary);
    text-decoration: none;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 600;
    transition: all 0.3s var(--ease);
}
.discover-btn:hover { gap: 25px; }

.hero-visual {
    width: 100%;
    height: 70vh;
}
.visual-wrapper {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
}
.visual-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}


/* --- SCROLL INDICATOR --- */
.scroll-wrapper {
    position: absolute;
    bottom: 0;
    left: 6vw;
    height: 100px;
}
.scroll-indicator {
    display: flex;
    align-items: center;
    gap: 20px;
    transform-origin: left;
    transform: rotate(-90deg) translateX(100px);
}
.scroll-text {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--text-muted);
}
.mouse-line {
    width: 60px;
    height: 1px;
    background: var(--border-color);
    position: relative;
    overflow: hidden;
}
.mouse-line::after {
    content: '';
    position: absolute;
    top: 0; left: 0; height: 100%; width: 50%;
    background: var(--primary);
    animation: scroll 2s infinite cubic-bezier(0.65, 0, 0.35, 1);
}
@keyframes scroll {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(200%); }
}


/* --- THE METHOD SECTION --- */
.concept-section {
    padding: 150px 0;
    background-color: var(--bg-primary);
}

.grid-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 120px;
    align-items: start;
    border-top: 1px solid var(--border-color);
    padding-top: 100px;
}



.concept-block {
    display: flex;
    flex-direction: column;
    gap: 40px;
}
.concept-top {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 30px;
}
.concept-title {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    font-weight: 400;
    margin-bottom: 15px;
    color: var(--primary);
}

.concept-subtitle {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--accent);
}

.concept-desc {
    color: var(--text-muted);
    font-weight: 400;
    font-size: 1.1rem;
    line-height: 1.9;
    max-width: 500px;
}



/* --- PORTFOLIO SECTION --- */
.portfolio-section {
    padding: 150px 0;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}
.section-header {
    text-align: center;
    margin-bottom: 80px;
}
.section-title {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 400;
    color: var(--primary);
    margin-bottom: 10px;
}
.section-subtitle {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--accent);
}

.portfolio-showcase {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 80px;
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 40px;
}
.portfolio-visual {
    width: 100%;
    aspect-ratio: 16/10;
    background: #e8eae9;
    overflow: hidden;
}
.portfolio-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.portfolio-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding-right: 40px;
}
.portfolio-brand {
    margin-bottom: 30px;
}
.portfolio-brand .eyebrow {
    font-size: 0.7rem;
    color: var(--accent);
    margin-bottom: 15px;
    display: block;
}
.portfolio-brand h3 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 400;
    color: var(--primary);
}
.portfolio-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 40px;
}
.portfolio-stats {
    list-style: none;
    margin-bottom: 40px;
    width: 100%;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}
.portfolio-stats li {
    font-size: 0.9rem;
    color: var(--text-main);
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}



/* --- FOOTER --- */
footer {
    padding: 80px 0 60px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 60px;
}

.footer-brand .footer-logo {
    height: 45px;
    margin-bottom: 25px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 40px;
}

.footer-links {
    display: flex;
    list-style: none;
    gap: 30px;
}
.footer-links a {
    color: var(--accent);
    text-decoration: none;
    font-size: 11px;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.footer-links a:hover {
    color: var(--primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1000;
}
.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 1px;
    background-color: var(--primary);
    transition: all 0.3s ease;
}
.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.footer-legal {
    color: var(--text-muted);
    font-size: 0.8rem;
    letter-spacing: 1px;
}

/* --- ANIMATIONS VIA JS CLASS --- */
.reveal-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s cubic-bezier(0.165, 0.84, 0.44, 1), transform 1s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.reveal-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- RESPONSIVE --- */
@media (max-width: 1024px) {
    .hero-split { grid-template-columns: 1fr; gap: 60px; }
    .hero-visual { height: 50vh; }
    .hero { padding-top: 160px; }
    .grid-layout { grid-template-columns: 1fr; gap: 80px; }
    .scroll-wrapper { display: none; }
}
@media (max-width: 768px) {
    /* Mobile Menu */
    .mobile-menu-btn { display: flex; }
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 40px 0;
        gap: 30px;
        align-items: center;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    }
    .nav-links.active { display: flex; }
    
    .nav-btn { display: none; }
    
    /* Justify text alignment for mobile as requested */
    p {
        text-align: justify;
    }

    .footer-bottom { flex-direction: column; align-items: flex-start; gap: 30px; }
    .hero-title { font-size: 3.5rem; }
    .hero-subtitle { text-align: justify; }

    /* Portfolio Section Mobile Fixes */
    .portfolio-showcase {
        grid-template-columns: 1fr;
        padding: 20px;
        gap: 40px;
    }
    .portfolio-content {
        padding-right: 0;
    }
    .portfolio-header h1 {
        font-size: 2.5rem !important;
    }
}