/* haskell.monster — styles */

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

:root {
    --dark: #1a1714;
    --dark-mid: #23201b;
    --brown: #4a3f35;
    --tan: #9e8e78;
    --gold: #b69d6e;
    --gold-bright: #c4a35a;
    --cream: #f5f0e8;
    --blue: #0000ff;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--dark);
    color: var(--cream);
    font-family: 'Source Serif 4', serif;
    font-size: 18px;
    line-height: 1.7;
    overflow-x: hidden;
    cursor: none;
}

/* Noise overlay */
.noise-svg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.03;
    mix-blend-mode: multiply;
}

/* Candle glow */
.candle-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(198, 163, 90, 0.15) 0%, transparent 70%);
    pointer-events: none;
    z-index: 10;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
    opacity: 0;
}

body:hover .candle-glow {
    opacity: 1;
}

/* Chapters */
.chapter {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    padding: 4rem 2rem;
}

.chapter-content {
    max-width: 55%;
    margin-left: 15%;
}

.chapter-content.offset-left {
    margin-left: 10%;
    margin-right: auto;
}

.chapter-content.offset-right {
    margin-left: auto;
    margin-right: 10%;
}

/* Chapter 0 — The Summoning */
.chapter-0 {
    background: var(--dark);
    align-items: center;
    text-align: center;
}

.chapter-0 .chapter-content {
    margin-left: auto;
    margin-right: auto;
}

.chapter-label {
    font-family: 'Fira Code', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--tan);
    margin-bottom: 2rem;
    opacity: 0.7;
}

.hero-title {
    font-family: 'Libre Baskerville', serif;
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 700;
    font-style: italic;
    letter-spacing: -0.01em;
    color: var(--cream);
    margin-bottom: 1.5rem;
}

.lambda {
    color: var(--gold-bright);
    font-size: 1.2em;
}

.hero-subtitle {
    font-family: 'Source Serif 4', serif;
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--tan);
    font-style: italic;
}

.scroll-hint {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    animation: float 2s ease-in-out infinite;
}

.scroll-arrow {
    font-size: 1.5rem;
    color: var(--tan);
    opacity: 0.5;
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* Section titles */
.section-title {
    font-family: 'Libre Baskerville', serif;
    font-size: clamp(1.8rem, 4vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--cream);
    margin-bottom: 2rem;
}

/* Code blocks */
.code-block {
    font-family: 'Fira Code', monospace;
    font-size: 0.95rem;
    background: var(--dark-mid);
    border-left: 2px solid var(--gold);
    padding: 1.5rem 2rem;
    margin: 2rem 0;
    color: var(--gold-bright);
    overflow-x: auto;
    line-height: 1.8;
}

/* Body text */
.body-text {
    font-family: 'Source Serif 4', serif;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--tan);
    max-width: 600px;
}

/* Breathing space */
.breathing-space {
    height: 50vh;
}

/* Chapter 4 — closing */
.chapter-4 {
    text-align: center;
}

.chapter-4 .chapter-content {
    margin-left: auto;
    margin-right: auto;
}

.closing-text {
    margin: 0 auto;
}

.colophon {
    font-family: 'Fira Code', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--brown);
    margin-top: 6rem;
}

/* Fade-in animations */
.chapter-content {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1.2s ease, transform 1.2s ease;
}

.chapter-content.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Chapter 0 is visible by default */
.chapter-0 .chapter-content {
    opacity: 1;
    transform: translateY(0);
}