:root {
    --bg-dark: #0a110d;
    --text-primary: #e0f2f1;
    --text-secondary: #80cbc4;
    --accent-primary: #00e676;
    --accent-secondary: #1de9b6;
    --card-bg: #14231c;
    --border-color: #263238;
}

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

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

h1, h2, h3, .toc-title {
    font-family: 'Outfit', sans-serif;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.home-nav {
    padding: 2rem;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
}

.home-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

.home-nav a:hover {
    color: var(--accent-primary);
}

header {
    height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 2rem;
    background: radial-gradient(circle at center, #1b3a2b 0%, var(--bg-dark) 80%);
}

header h1 {
    font-size: clamp(2.5rem, 8vw, 5rem);
    margin-bottom: 1rem;
    background: linear-gradient(to right, var(--text-primary), var(--accent-primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    max-width: 800px;
    color: var(--text-secondary);
    font-size: 1.2rem;
}

.hero-canvas-container {
    width: 100%;
    height: 400px;
    margin-bottom: 4rem;
    position: relative;
    overflow: hidden;
}

#hero-noise-canvas {
    width: 100%;
    height: 100%;
}

main {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

section {
    margin-bottom: 6rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--accent-secondary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    font-weight: 300;
}

strong {
    color: var(--accent-primary);
    font-weight: 600;
}

.toc {
    background: var(--card-bg);
    padding: 3rem;
    border-radius: 1px;
    border: 1px solid var(--border-color);
    margin: -100px auto 4rem;
    max-width: 800px;
    position: relative;
    z-index: 10;
}

.toc-title {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    display: block;
}

.toc ol {
    list-style: none;
}

.toc-part {
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--accent-primary);
    margin: 1.5rem 0 0.5rem;
}

.toc a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 400;
    display: block;
    padding: 0.4rem 0;
    transition: transform 0.2s ease;
}

.toc a:hover {
    transform: translateX(10px);
    color: var(--accent-secondary);
}

.section-tag {
    font-size: 0.6rem;
    padding: 2px 6px;
    border: 1px solid currentColor;
    margin-right: 10px;
    vertical-align: middle;
}

.interactive-container {
    background: #0d1a14;
    border: 1px solid var(--border-color);
    padding: 1rem;
    margin: 2rem 0;
}

.visual-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 1rem;
    letter-spacing: 1px;
}

canvas {
    width: 100%;
    background: #050a08;
    display: block;
}

.controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    padding: 1.5rem;
    background: #14231c;
    border-top: 1px solid var(--border-color);
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.slider-group label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

input[type="range"] {
    accent-color: var(--accent-primary);
}

button {
    background: transparent;
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    padding: 0.6rem 1rem;
    font-family: inherit;
    text-transform: uppercase;
    font-size: 0.7rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    background: var(--accent-primary);
    color: var(--bg-dark);
}

footer {
    padding: 4rem 2rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

@media (max-width: 768px) {
    header { height: 50vh; }
    .toc { margin: -50px 1rem 4rem; padding: 2rem; }
}