/* === RESET & BASE === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --gold: #d4a853;
    --purple: #7b2d8e;
    --void: #1a0612;
    --lavender: #c9b8d4;
    --crimson: #8b1a2b;
    --pale: #e8d5f0;
    --navy: #1e3a6b;
    --abyss: #0d0a14;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--abyss);
    color: var(--pale);
    font-family: 'Lora', Georgia, serif;
    font-size: 16px;
    line-height: 1.7;
    overflow-x: hidden;
}

/* === CANDLELIGHT OVERLAY === */
#candlelight {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 1000;
    mix-blend-mode: soft-light;
    background: radial-gradient(circle 350px at 50% 50%, rgba(212, 168, 83, 0.25), transparent 70%);
    transition: background 0.15s ease-out;
}

/* === LAYER SECTIONS === */
.layer {
    position: relative;
    min-height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#layer1 {
    background: linear-gradient(180deg, var(--void) 0%, var(--abyss) 100%);
}

#layer2 {
    background: linear-gradient(180deg, var(--abyss) 0%, #120520 50%, var(--void) 100%);
}

#layer3 {
    background: linear-gradient(180deg, var(--void) 0%, #0f0318 50%, #0d0a14 100%);
}

#layer4 {
    background: linear-gradient(180deg, #0d0a14 0%, #0a0710 50%, #080510 100%);
}

#layer5 {
    background: linear-gradient(180deg, #080510 0%, #050308 100%);
}

/* === LAYER CONTENT === */
.layer-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    width: 90%;
    padding: 4rem 0;
}

.layer-label {
    display: inline-block;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--gold);
    opacity: 0.7;
    margin-bottom: 1.5rem;
    border-left: 2px solid var(--gold);
    padding-left: 0.75rem;
}

h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(2rem, 5vw, 4.5rem);
    letter-spacing: -0.02em;
    color: var(--pale);
    margin-bottom: 1rem;
}

h1 .dot {
    color: var(--gold);
}

h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(1.8rem, 4vw, 3.5rem);
    letter-spacing: -0.02em;
    color: var(--pale);
    margin-bottom: 2rem;
}

h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: 1.25rem;
    color: var(--gold);
    margin-bottom: 0.75rem;
}

.tagline {
    font-family: 'Lora', serif;
    font-style: italic;
    font-size: 1.15rem;
    color: var(--lavender);
    max-width: 540px;
    margin-bottom: 3rem;
    opacity: 0.85;
}

/* === SCROLL INDICATOR === */
.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--gold);
    opacity: 0.5;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    animation: pulse-down 2s ease-in-out infinite;
}

@keyframes pulse-down {
    0%, 100% { transform: translateY(0); opacity: 0.5; }
    50% { transform: translateY(8px); opacity: 0.8; }
}

/* === BLOB FORMS === */
.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    z-index: 1;
    animation: blob-drift 20s ease-in-out infinite alternate;
}

.blob-l1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(ellipse, var(--purple) 0%, transparent 70%);
    top: -10%;
    right: -10%;
}

.blob-l2-a {
    width: 400px;
    height: 400px;
    background: radial-gradient(ellipse, var(--purple) 0%, transparent 70%);
    top: 10%;
    left: -5%;
    animation-delay: -5s;
}

.blob-l2-b {
    width: 300px;
    height: 350px;
    background: radial-gradient(ellipse, var(--crimson) 0%, transparent 70%);
    bottom: 5%;
    right: 5%;
    animation-delay: -10s;
}

.blob-l3 {
    width: 450px;
    height: 450px;
    background: radial-gradient(ellipse, var(--navy) 0%, transparent 70%);
    top: 20%;
    right: -8%;
    animation-delay: -3s;
}

.blob-l4-a {
    width: 350px;
    height: 350px;
    background: radial-gradient(ellipse, var(--crimson) 0%, transparent 70%);
    top: 5%;
    left: 10%;
    animation-delay: -7s;
}

.blob-l4-b {
    width: 300px;
    height: 300px;
    background: radial-gradient(ellipse, var(--purple) 0%, transparent 70%);
    bottom: 10%;
    right: -5%;
    animation-delay: -12s;
}

.blob-l5 {
    width: 600px;
    height: 600px;
    background: radial-gradient(ellipse, var(--navy) 10%, var(--purple) 30%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.15;
}

@keyframes blob-drift {
    0% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(20px, -15px) scale(1.05); }
    66% { transform: translate(-10px, 20px) scale(0.95); }
    100% { transform: translate(15px, 10px) scale(1.02); }
}

/* === ENTRY GRID === */
.entry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 1rem;
}

.entry {
    background: rgba(26, 6, 18, 0.6);
    border: 1px solid rgba(123, 45, 142, 0.2);
    border-radius: 2px;
    padding: 2rem;
    transition: border-color 0.4s ease, box-shadow 0.4s ease;
}

.entry:hover {
    border-color: rgba(212, 168, 83, 0.4);
    box-shadow: 0 0 40px rgba(123, 45, 142, 0.1);
}

.entry p {
    color: var(--lavender);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.entry-tag {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gold);
    opacity: 0.5;
    border: 1px solid rgba(212, 168, 83, 0.2);
    padding: 0.25rem 0.6rem;
    border-radius: 2px;
}

/* === TECHNICAL DIAGRAMS === */
.diagram {
    position: absolute;
    z-index: 2;
    opacity: 0.5;
    pointer-events: none;
}

.diagram-l1 {
    bottom: 10%;
    right: 5%;
    width: 300px;
}

.diagram-l2 {
    top: 15%;
    right: 3%;
    width: 200px;
}

.diagram-l4 {
    bottom: 15%;
    left: 5%;
    width: 200px;
}

.technical-svg {
    width: 100%;
    height: auto;
}

/* === GLOSSARY === */
.glossary {
    margin-top: 1rem;
    margin-bottom: 3rem;
}

.glossary dl {
    display: grid;
    gap: 1.5rem;
}

.glossary dt {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: 1.1rem;
    color: var(--gold);
}

.glossary dd {
    font-size: 0.95rem;
    color: var(--lavender);
    padding-left: 1rem;
    border-left: 1px solid rgba(123, 45, 142, 0.3);
    margin-left: 0;
}

/* === FOOTER === */
.site-footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(123, 45, 142, 0.15);
}

.site-footer p {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    color: var(--lavender);
    opacity: 0.4;
    letter-spacing: 0.05em;
}

/* === REVEAL ANIMATION === */
.layer-content {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* First section visible by default */
#layer1 .layer-content {
    opacity: 1;
    transform: translateY(0);
}

/* === RESPONSIVE === */
@media (max-width: 600px) {
    .entry-grid {
        grid-template-columns: 1fr;
    }

    .diagram {
        display: none;
    }

    .layer-content {
        width: 92%;
        padding: 3rem 0;
    }
}