:root {
    --bg-canvas: #FFFFFF;
    --bg-surface: #F5F7F6;
    --bg-elevated: #FFFFFF;
    --bg-tiles: #EEF2F0;
    --color-orange: #D04A02;
    --color-amber: #EB8C00;
    --color-green: #2D8C3C;
    --color-leaf: #0F9D63;
    --color-teal: #0D9488;
    --color-forest: #166534;
    --text-primary: #1A1A1A;
    --text-secondary: #5B6B63;
    --border-glow: rgba(208,74,2,0.35);
    --border-soft: rgba(17,25,22,0.08);
    --border-soft-strong: rgba(17,25,22,0.14);
    --font-main: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    font-family: var(--font-main);
    color: var(--text-primary);
    background-color: var(--bg-canvas);
}

body {
    overflow-x: hidden;
}

::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-surface);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-tiles);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #CBD5C9;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
.gradient-text {
    background: linear-gradient(to right, var(--color-orange), var(--color-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    font-weight: 600;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    padding: 1.5rem 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(12px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-soft);
    box-shadow: 0 1px 16px rgba(17,25,22,0.05);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

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

.nav-links a {
    color: var(--text-secondary);
    transition: color 0.2s;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--color-orange);
}

.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    transition: 0.3s;
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding-top: 5rem;
}

/* Sustainability photograph behind the hero. The white wash layered over it
   keeps the dark hero text above 4.5:1 contrast; the hero content (z-index 10)
   stacks above it. */
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background:
        linear-gradient(180deg,
            rgba(255, 255, 255, 0.92) 0%,
            rgba(255, 255, 255, 0.82) 35%,
            rgba(255, 255, 255, 0.88) 70%,
            var(--bg-canvas) 100%),
        url("img/hero-sustainability.jpg") center 60% / cover no-repeat;
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    padding: 0 2rem;
}

.hero-title {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-ctas {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 0.875rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background: var(--color-orange);
    color: #FFFFFF;
}

.btn-primary:hover {
    background: var(--color-amber);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(208,74,2,0.3);
}

.btn-secondary {
    background: rgba(17,25,22,0.04);
    border: 1px solid var(--border-soft-strong);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(17,25,22,0.08);
    transform: translateY(-2px);
}

    100% { transform: translate(30px, 50px); }
}

/* Sections */
.section {
    padding: 6rem 0;
}

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

/* Apps Grid */
.apps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.app-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-soft);
    border-radius: 1rem;
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 2px 12px rgba(17,25,22,0.04);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.app-card:hover {
    transform: scale(1.02) translateY(-5px);
    background: var(--bg-elevated);
    box-shadow: 0 12px 32px rgba(17,25,22,0.1);
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    /* Decorative border glow only - it covers the whole card, so without this
       it swallows clicks meant for the Launch Application link underneath. */
    pointer-events: none;
    border-radius: 1rem;
    padding: 2px;
    background: linear-gradient(135deg, transparent, transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    transition: background 0.4s;
}

.app-card:hover::before {
    background: linear-gradient(135deg, var(--hover-color, var(--color-orange)), transparent);
    box-shadow: 0 0 20px var(--hover-color, var(--border-glow));
}

.card-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1.5rem;
}

.app-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.app-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.btn-launch {
    padding: 0.5rem 1rem;
    border: 1px solid;
    border-radius: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.3s;
    background: transparent;
}

.btn-launch:hover {
    background: currentColor;
    color: var(--bg-canvas) !important;
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-item {
    background: var(--bg-elevated);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-soft);
    box-shadow: 0 2px 12px rgba(17,25,22,0.04);
}

.icon-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    background: rgba(208,74,2,0.1);
}

.icon-circle svg {
    width: 22px;
    height: 22px;
}

.feature-item h4 {
    color: var(--color-orange);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

/* Trust / standards row under hero */
.trust-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
    margin-top: 2.5rem;
}

.trust-badge {
    padding: 0.4rem 0.9rem;
    border: 1px solid var(--border-soft-strong);
    border-radius: 2rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: rgba(255,255,255,0.6);
}

/* Footer columns */
.footer-columns {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 2rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-top: 0.75rem;
}

.footer-heading {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.footer-bottom {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-soft);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .footer-columns { grid-template-columns: 1fr; }
}

.feature-item p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.9rem;
}

/* Stats & Tech Stack */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-soft);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    transition: border-color 0.3s;
    box-shadow: 0 2px 12px rgba(17,25,22,0.04);
}

.stat-card:hover {
    border-color: var(--color-orange);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--color-orange), var(--color-amber));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.tech-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-soft);
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.tech-badge:hover {
    border-color: var(--border-soft-strong);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.tech-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Footer */
footer {
    background: var(--bg-surface);
    padding: 3rem 0;
    border-top: 1px solid var(--border-soft);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-col p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.footer-col a {
    color: var(--color-orange);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: color 0.2s;
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero-title { font-size: 2.5rem; }
    .hero-subtitle { font-size: 1rem; }

    .apps-grid, .features-grid {
        grid-template-columns: 1fr;
    }

    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-canvas);
        flex-direction: column;
        padding: 1rem;
        text-align: center;
        border-bottom: 1px solid var(--border-soft);
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }
}