:root {
    --color-bg: #0a0a0a;
    --color-card: #141414;
    --color-text: #ffffff;
    --color-accent: #00ff41;
    /* Neon Green */
    --color-accent-dim: #00cc33;
    --font-main: 'Inter', sans-serif;
}

@font-face {
    font-family: 'Inter';
    font-weight: 300;
    font-display: swap;
    src: url('../assets/fonts/Inter-Regular.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-weight: 400;
    font-display: swap;
    src: url('../assets/fonts/Inter-Regular.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-weight: 700;
    font-display: swap;
    src: url('../assets/fonts/Inter-SemiBold.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-weight: 900;
    font-display: swap;
    src: url('../assets/fonts/Inter-Bold.woff2') format('woff2');
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-main);
    margin: 0;
    line-height: 1.6;
}

h1,
h2,
h3 {
    text-transform: uppercase;
    font-weight: 900;
    letter-spacing: -1px;
    margin-top: 0;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    font-weight: 700;
    text-decoration: none;
    text-transform: uppercase;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #000;
    border-color: var(--color-accent);
}

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

.btn-outline {
    border-color: #fff;
    color: #fff;
}

.btn-outline:hover {
    background-color: #fff;
    color: #000;
}

/* Nav */
.main-nav {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 10;
}

.main-nav .logo {
    display: inline-block;
    color: #fff;
    /* Sets currentColor for SVG */
    transition: transform 0.3s;
}

.main-nav .logo:hover {
    transform: scale(1.05);
}

.main-nav .logo img {
    height: 60px;
    /* Adjust as needed */
    width: auto;
    display: block;
    /* Removes inline gap */
}

/* Hero */
.hero {
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    background: radial-gradient(circle at center, #222 0%, #000 100%);
}

.hero h1 {
    font-size: 4rem;
    line-height: 1;
    margin-bottom: 20px;
}

.hero-sub {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 40px;
    color: #aaa;
}

.badge {
    display: inline-block;
    background: #222;
    color: var(--color-accent);
    padding: 5px 10px;
    font-weight: bold;
    margin-bottom: 20px;
    border: 1px solid var(--color-accent);
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 50px;
    text-align: center;
}

.section-green {
    background-color: var(--color-accent);
    color: #000;
}

.text-black {
    color: #000;
}

/* Calculator */
.calc-box {
    background: #fff;
    padding: 40px;
    border-radius: 4px;
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

.calc-inputs {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.calc-inputs input {
    width: 100%;
    padding: 15px;
    font-size: 1.2rem;
    border: 2px solid #ddd;
    background: #f5f5f5;
    font-family: inherit;
    font-weight: bold;
}

.calc-results {
    flex: 1;
    background: #000;
    color: var(--color-accent);
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.result-item {
    font-size: 1.5rem;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
}

/* Products */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--color-card);
    padding: 30px;
    border: 1px solid #333;
    transition: transform 0.3s;
}

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

.product-card.highlight {
    border-color: var(--color-accent);
    box-shadow: 0 0 20px rgba(0, 255, 65, 0.1);
}

.p-header {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--color-accent);
}

.price {
    font-size: 2rem;
    font-weight: 900;
    margin: 20px 0;
}

.btn-small {
    display: block;
    text-align: center;
    padding: 10px;
    border: 1px solid #fff;
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    text-transform: uppercase;
}

.btn-green {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #000;
}

.check-list {
    list-style: none;
    padding: 0;
}

.check-list li::before {
    content: "✓";
    color: var(--color-accent);
    margin-right: 10px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .calc-box {
        flex-direction: column;
    }
}

/* Utility / Extras */
.btn-black {
    background-color: #000;
    color: var(--color-accent);
    border-color: #000;
}

.btn-black:hover {
    background-color: transparent;
    color: #000;
    border-color: #000;
}