/* Global Reset & Base */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    padding-left: var(--rail-width); /* Make room for sticky rail */
    padding-top: var(--hud-height);  /* Make room for HUD */
    
    /* "Graph paper" subtle texture */
    background-image: radial-gradient(var(--color-border) 1px, transparent 1px);
    background-size: 24px 24px;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); color: var(--color-text-muted); }
h3 { font-size: 1.25rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: var(--space-md); }

a {
    color: var(--theme-focus);
    text-decoration: none;
    transition: color var(--duration-fast) ease;
}

/* Layout Utilities */
.section-container {
    min-height: 80vh;
    padding: var(--space-lg) var(--space-md);
    max-width: var(--max-width);
    margin: 0 auto;
    position: relative;
    opacity: 0; /* JS Reveal */
    transform: translateY(20px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.section-container.visible {
    opacity: 1;
    transform: translateY(0);
}

.grid-layout {
    display: grid;
    grid-template-columns: 1fr 3fr; /* Metadata | Content */
    gap: var(--space-lg);
}

/* Mobile Layout */
@media (max-width: 768px) {
    .grid-layout {
        grid-template-columns: 1fr;
    }
    body {
        padding-bottom: 80px; /* Room for bottom nav */
    }
}

/* Specific Sections */
.intro-block {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 60vh;
    border-left: 1px solid var(--theme-focus);
    padding-left: var(--space-md);
}

.accent-text {
    display: block;
    color: var(--theme-focus);
    font-size: 0.6em;
    font-family: var(--font-mono);
    margin-top: var(--space-xs);
}

.timeline {
    border-left: 1px solid var(--color-border);
    padding-left: var(--space-md);
}

.timeline-item {
    margin-bottom: var(--space-lg);
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(var(--space-md) * -1 - 1px);
    top: 6px;
    width: 9px;
    height: 1px;
    background: var(--theme-focus);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.meta-item {
    margin-bottom: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.meta-label {
    display: block;
    color: var(--color-text-muted);
    text-transform: uppercase;
    font-size: 0.7em;
}

.contact-block {
    background: var(--color-surface);
    padding: var(--space-lg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
}

footer {
    text-align: center;
    padding: var(--space-lg);
    color: var(--color-text-muted);
    font-size: 0.85rem;
}