:root {
    --font-heading: 'Avenir Next', 'Outfit', 'Helvetica Neue', sans-serif;
    --font-body: 'Avenir', 'Outfit', 'Helvetica Neue', sans-serif;

    --bg-color: #FFFFFF;
    --text-primary: #111111;
    --text-secondary: #555555;
    --accent-color: #000000;
    --border-color: #E0E0E0;
    --section-bg: #F8F8F8;

    --nav-height: 100px;
    --container-max: 1400px;
    --sidebar-width: 80px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

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

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background-color: var(--bg-color);
    line-height: 1.6;
    overflow-x: hidden;
    font-weight: 300;
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.03);
}

.nav-container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    height: 40px;
    /* Increased legibility */
    width: auto;
    display: block;
}

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

.nav-item {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 400;
    transition: color 0.3s ease;
}

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

.nav-cta {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 500;
    padding: 0.8rem 1.8rem;
    border: 1px solid var(--border-color);
    border-radius: 50px;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: var(--text-primary);
    color: #FFF;
    border-color: var(--text-primary);
}

/* --- Social Sidebar --- */
.social-sidebar {
    position: fixed;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    padding-bottom: 3rem;
    z-index: 900;
}

.social-link {
    color: var(--text-secondary);
    font-size: 1.1rem;
    text-decoration: none;
    transition: transform 0.3s ease, color 0.3s ease;
}

.social-link:hover {
    color: var(--text-primary);
    transform: translateY(-5px);
}

.vertical-line {
    width: 1px;
    height: 100px;
    background-color: var(--border-color);
}

/* --- Sections Core --- */
.page-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 6rem 4rem;
}

.content-wrapper {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

/* --- Styling --- */
.eyebrow {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.headline {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 6vw, 5.5rem);
    line-height: 1.1;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.sub-headline {
    font-family: var(--font-body);
    font-size: 1.5rem;
    font-weight: 200;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.separator-line {
    width: 50px;
    height: 1px;
    background-color: var(--text-primary);
    margin: 2.5rem 0;
}

.body-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 50ch;
    line-height: 1.8;
}

/* --- Visuals --- */
.main-image {
    width: 100%;
    height: auto;
    display: block;
    filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.06));
}

.sustainability {
    background-color: var(--section-bg);
}

.pillars-container {
    margin: 3rem 0;
    display: grid;
    gap: 2rem;
}

.pillar {
    padding-left: 1.5rem;
    border-left: 1px solid var(--border-color);
    transition: border-color 0.3s ease;
}

.pillar:hover {
    border-left-color: var(--text-primary);
}

.pillar strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

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

/* Image Grid for Section 2 */
.grid-layout {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    position: relative;
}

.img-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 2px;
}

.item-1 {
    width: 90%;
    margin-left: auto;
}

.item-2 {
    width: 80%;
    margin-right: auto;
    margin-top: -10%;
    z-index: 2;
}

/* --- CTA --- */
.cta-block {
    margin-top: 4rem;
}

.cta-text {
    display: block;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.cta-link {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 500;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding-bottom: 4px;
    transition: all 0.3s ease;
}

.cta-link:hover {
    border-bottom-color: var(--text-primary);
}

.cta-link i {
    transition: transform 0.3s ease;
}

.cta-link:hover i {
    transform: translateX(8px);
}

/* --- Indicator --- */
.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    right: 4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--text-secondary);
}

.indicator-line {
    width: 1px;
    height: 40px;
    background-color: var(--border-color);
    position: relative;
    overflow: hidden;
}

.indicator-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--text-primary);
    animation: scrollLine 2s infinite ease-in-out;
}

@keyframes scrollLine {
    0% {
        transform: translateY(-100%);
    }

    100% {
        transform: translateY(100%);
    }
}

/* --- Footer --- */
.footer {
    padding: 4rem;
    background-color: var(--bg-color);
    border-top: 1px solid var(--border-color);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

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

.footer-links a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--text-primary);
}

/* --- Responsive --- */
@media (max-width: 1200px) {

    .nav-container,
    .page-section,
    .footer-container {
        padding: 0 2rem;
    }

    .content-wrapper {
        gap: 3rem;
    }
}

@media (max-width: 992px) {
    .navbar {
        height: 80px;
    }

    .nav-links {
        display: none;
    }

    .social-sidebar {
        display: none;
    }

    .content-wrapper {
        grid-template-columns: 1fr;
        padding-top: 4rem;
        text-align: center;
    }

    .headline {
        font-size: 3.5rem;
    }

    .separator-line {
        margin: 2rem auto;
    }

    .body-text {
        margin: 0 auto;
    }

    .pillar {
        text-align: left;
    }

    .item-1,
    .item-2 {
        width: 100%;
        margin: 0;
    }

    .item-2 {
        margin-top: 2rem;
    }
}