:root {
    --primary-color: #2DD4BF;
    /* Teal 400 */
    --primary-dark: #14B8A6;
    /* Teal 500 */
    --secondary-color: #0F172A;
    /* Slate 900 */
    --text-color: #334155;
    /* Slate 700 */
    --light-bg: #F0FDFA;
    /* Teal 50 */
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Outfit', sans-serif;
    color: var(--text-color);
    background-color: var(--light-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header & Nav */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition);
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links li a {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 600;
    transition: var(--transition);
    position: relative;
}

.nav-links li a:hover,
.nav-links li a.active {
    color: var(--primary-dark);
}

.nav-links li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

/* Main Content Area */
main {
    padding-top: 80px;
    /* Header height */
    min-height: 100vh;
}

section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s forwards;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero Section Styles */
.hero {
    text-align: center;
    padding: 8rem 2rem;
    background: linear-gradient(135deg, var(--light-bg) 0%, #D1FAE5 100%);
    border-radius: 2rem;
    margin-top: 2rem;
    margin-bottom: 4rem;
    box-shadow: var(--shadow);
}

.hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: 3.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--primary-dark);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 14px 0 rgba(20, 184, 166, 0.39);
}

.btn:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(20, 184, 166, 0.5);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid transparent;
}

.feature-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.home-card {
    text-align: center;
    border-top: 4px solid var(--primary-dark);
}

/* Calculator Styles */
.calculator-box {
    background: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    max-width: 500px;
    margin: 3rem auto;
    border-top: 4px solid var(--primary-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #cbd5e1;
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.2);
}

.result {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--light-bg);
    border-radius: 0.5rem;
    text-align: center;
    font-weight: 700;
    color: var(--secondary-color);
    display: none;
}

.result.visible {
    display: block;
    animation: fadeUp 0.5s;
}

/* Incentives Styles */
.incentives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.incentive-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    border-left: 5px solid var(--primary-color);
    transition: var(--transition);
}

.incentive-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.badge {
    background: #D1FAE5;
    color: #065F46;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
}

.incentive-card h3 {
    margin-bottom: 0;
    color: var(--secondary-color);
}

.incentive-card .target {
    font-size: 0.9rem;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

/* Decarbonization Styles */
.two-column-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.decarb-block {
    background: rgba(255, 255, 255, 0.5);
    padding: 2rem;
    border-radius: 1rem;
    backdrop-filter: blur(5px);
}

.styled-list {
    list-style: none;
    margin-top: 1.5rem;
}

.styled-list li {
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

/* Links Section */
.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.big-link-btn {
    display: block;
    padding: 3rem 2rem;
    background: var(--white);
    border-radius: 1.5rem;
    text-align: center;
    text-decoration: none;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 2px solid transparent;
}

.big-link-btn:hover {
    border-color: var(--primary-color);
    transform: translateY(-8px);
    background: var(--light-bg);
}

.big-link-btn h3 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.big-link-btn p {
    color: var(--text-color);
    font-size: 0.9rem;
}

/* Product Panels */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.product-panel {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}

.product-panel h4 {
    color: var(--primary-dark);
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.product-panel ul {
    list-style: none;
    margin-top: 1rem;
}

.product-panel ul li {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    color: var(--secondary-color);
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    margin-top: 3rem;
}

.card-glass {
    background: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

.contact-info p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.contact-form-wrapper textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #cbd5e1;
    border-radius: 0.5rem;
    font-family: inherit;
    resize: vertical;
}

.contact-form-wrapper textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.2);
}

/* Footer */
footer {
    background: var(--secondary-color);
    color: var(--white);
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

/* New Hamburger Default (Hidden on Desktop) */
.hamburger {
    display: none;
}

/* Mobile */
@media (max-width: 768px) {
    body {
        overflow-x: hidden;
    }

    .nav-links {
        position: absolute;
        left: 0;
        top: 80px;
        /* Header height */
        height: auto;
        background-color: var(--white);
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 100%;
        transform: translateY(-150%);
        /* Curtain hidden up */
        transition: transform 0.5s ease-in-out;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        padding: 2rem 0;
        border-bottom: 4px solid var(--primary-color);
    }

    .nav-links li {
        opacity: 0;
    }

    .hamburger {
        display: flex;
        align-items: center;
        cursor: pointer;
    }

    .hamburger-label {
        display: block;
        margin-right: 10px;
        font-weight: 700;
        color: var(--primary-dark);
        font-size: 1rem;
    }

    .hamburger span {
        /* This might conflict with inner lines? no, .hamburger span selects all spans */
        /* But we have .hamburger-label, .line1, .line2, .line3. */
        /* The previous CSS targeted .hamburger span directly for the lines. */
        /* We need to be specific for lines now */
    }

    .hamburger div span {
        /* The lines are inside a div now */
        display: block;
        width: 25px;
        height: 3px;
        background-color: var(--secondary-color);
        margin: 5px;
        transition: all 0.3s ease;
    }

    .nav-active {
        transform: translateY(0%);
        /* Curtain drops down */
    }

    @keyframes navLinkFade {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .nav-links li {
        animation: navLinkFade 0.5s ease forwards 0.3s;
        margin: 1.5rem 0;
    }

    /* Toggle Animations */
    .toggle .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .toggle .line2 {
        opacity: 0;
    }

    .toggle .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .two-column-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }
}