/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --black: #000000;
    --white: #FFFFFF;
    --gray-100: #F5F5F5;
    --gray-200: #E5E5E5;
    --gray-300: #D4D4D4;
    --gray-700: #404040;
    --gray-800: #262626;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--black);
    background-color: var(--white);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: var(--black);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
    border-bottom: 4px solid var(--white);
}

header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -1px;
}

.tagline {
    font-size: 1.25rem;
    font-weight: 300;
    opacity: 0.9;
}

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

section:nth-child(even) {
    background-color: var(--gray-100);
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
}

.subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--gray-700);
    margin-bottom: 50px;
}

/* Hero Section */
.hero {
    text-align: center;
}

.hero h2 {
    margin-bottom: 30px;
}

.hero > .container > p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 50px;
    color: var(--gray-700);
}

.comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 40px;
}

.bad, .good {
    padding: 30px;
    border: 2px solid var(--black);
}

.bad {
    background-color: var(--white);
}

.good {
    background-color: var(--black);
    color: var(--white);
}

.bad h3, .good h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.bad ul, .good ul {
    list-style: none;
    text-align: left;
}

.bad li, .good li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

/* Layers */
.layers {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.layer {
    padding: 30px;
    border: 2px solid var(--black);
    text-align: center;
    background-color: var(--white);
}

.layer h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.layer p {
    margin-bottom: 15px;
    color: var(--gray-700);
}

.layer code {
    display: block;
    background-color: var(--black);
    color: var(--white);
    padding: 8px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

/* Weight Translation Table */
.weight-translation {
    margin-top: 60px;
}

.weight-translation h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    text-align: center;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--white);
    border: 2px solid var(--black);
}

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--gray-300);
}

th {
    background-color: var(--black);
    color: var(--white);
    font-weight: 600;
}

tr:last-child td {
    border-bottom: none;
}

/* Code Example */
.code-example {
    background-color: var(--gray-800);
    color: var(--white);
}

.code-example h2,
.code-example h3 {
    color: var(--white);
}

pre {
    background-color: var(--black);
    padding: 25px;
    overflow-x: auto;
    border: 2px solid var(--white);
    margin-bottom: 30px;
}

code {
    font-family: 'Courier New', Monaco, monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

.output {
    margin-top: 40px;
}

.output h3 {
    color: var(--white);
    margin-bottom: 15px;
}

/* Integrations */
.framework-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.framework {
    padding: 30px;
    border: 2px solid var(--black);
    text-align: center;
    background-color: var(--white);
}

.framework h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.framework p {
    color: var(--gray-700);
}

.framework code {
    background-color: var(--gray-200);
    padding: 2px 6px;
    font-size: 0.85rem;
}

/* Use Cases */
.use-case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.use-case {
    padding: 30px;
    border: 2px solid var(--black);
    background-color: var(--white);
}

.use-case h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.use-case p {
    color: var(--gray-700);
}

/* CTA Section */
.cta {
    text-align: center;
    padding: 100px 0;
}

.button {
    display: inline-block;
    background-color: var(--black);
    color: var(--white);
    padding: 18px 50px;
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 600;
    border: 3px solid var(--black);
    margin-top: 30px;
    transition: all 0.3s ease;
}

.button:hover {
    background-color: var(--white);
    color: var(--black);
}

.license {
    margin-top: 20px;
    color: var(--gray-700);
    font-size: 0.9rem;
}

/* Footer */
footer {
    background-color: var(--black);
    color: var(--white);
    padding: 40px 0;
    text-align: center;
    border-top: 4px solid var(--white);
}

footer p {
    margin-bottom: 5px;
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .comparison,
    .layers,
    .framework-grid,
    .use-case-grid {
        grid-template-columns: 1fr;
    }

    section {
        padding: 50px 0;
    }

    .button {
        padding: 15px 30px;
        font-size: 1rem;
    }
}