:root {
    --bg-color: #0a0a0a;
    --text-main: #e0e0e0;
    --accent-red: #c0392b;
    --accent-red-glow: rgba(192, 57, 43, 0.15);
    --accent-dim: #222222;
    --font-mono: 'Courier Prime', monospace;
    --font-sans: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.7;
    overflow-x: hidden;
}

/* ─── Typography ─── */
h1, h2, h3 {
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 2px;
}

h1 {
    font-size: clamp(2.2rem, 6vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: #ffffff;
}

h1 .red {
    color: var(--accent-red);
}

h2 {
    font-size: clamp(1.4rem, 3vw, 2rem);
    margin-bottom: 0.25rem;
    color: var(--accent-red);
}

h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: #ffffff;
    letter-spacing: 1px;
}

p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    color: #cccccc;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-red);
    letter-spacing: 4px;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.section-sub {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #555;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.classification {
    font-family: var(--font-mono);
    color: var(--accent-red);
    font-size: 0.75rem;
    font-weight: bold;
    margin-bottom: 2rem;
    letter-spacing: 2px;
    opacity: 0.8;
}

/* ─── Layout ─── */
.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 110px 0;
    border-bottom: 1px solid var(--accent-dim);
}

.divider {
    height: 2px;
    width: 40px;
    background-color: var(--accent-red);
    margin-bottom: 2.5rem;
}

/* ─── Hero ─── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    border-bottom: 1px solid var(--accent-dim);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 70% 50%, rgba(192, 57, 43, 0.07) 0%, transparent 70%),
        radial-gradient(ellipse 40% 60% at 20% 80%, rgba(192, 57, 43, 0.04) 0%, transparent 60%);
    pointer-events: none;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(255,255,255,0.012) 2px,
        rgba(255,255,255,0.012) 4px
    );
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.tagline {
    font-family: var(--font-mono);
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: #888;
    letter-spacing: 1px;
    margin-bottom: 2rem;
    text-transform: uppercase;
}

.lead {
    font-size: 1.1rem;
    font-weight: 300;
    color: #999;
    max-width: 680px;
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.cta-btn {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent-red);
    border: 1px solid var(--accent-red);
    padding: 12px 28px;
    text-decoration: none;
    transition: background 0.3s, color 0.3s;
}

.cta-btn:hover {
    background: var(--accent-red);
    color: #fff;
}

/* ─── Navigation ─── */
#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.97);
    border-bottom: 1px solid var(--accent-dim);
    z-index: 1000;
    padding: 14px 0;
    backdrop-filter: blur(8px);
}

.nav-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
}

.logo {
    font-family: var(--font-mono);
    font-weight: bold;
    font-size: 1rem;
    color: var(--accent-red);
    letter-spacing: 3px;
    flex-shrink: 0;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 24px;
}

.nav-links a {
    color: #888;
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--accent-red);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1100;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-main);
    transition: transform 0.3s, opacity 0.3s;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── Evidence List ─── */
.evidence-list {
    list-style: none;
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.evidence-list li {
    font-size: 1.05rem;
    padding-left: 1.5rem;
    border-left: 2px solid var(--accent-red);
    color: #cccccc;
}

.evidence-list li strong {
    display: block;
    color: #ffffff;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

/* ─── Formula ─── */
.formula-block {
    background: #111;
    border: 1px solid var(--accent-dim);
    border-left: 3px solid var(--accent-red);
    padding: 24px 32px;
    margin: 2rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.formula {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    color: #fff;
    letter-spacing: 2px;
}

.formula-temp {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-red);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ─── Grid ─── */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 2.5rem;
}

.grid-item {
    background: #0e0e0e;
    padding: 24px;
    border-left: 2px solid var(--accent-red);
    position: relative;
}

.grid-num {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-red);
    letter-spacing: 3px;
    display: block;
    margin-bottom: 0.75rem;
    opacity: 0.7;
}

.grid-item p {
    font-size: 0.95rem;
    color: #999;
    margin-bottom: 0;
    line-height: 1.6;
}

/* ─── Highlight Box ─── */
.highlight-box {
    border: 1px solid var(--accent-red);
    background: var(--accent-red-glow);
    padding: 28px 32px;
    margin-top: 2rem;
    font-family: var(--font-mono);
    font-size: 1rem;
    line-height: 1.8;
    color: #ccc;
}

.highlight-box strong {
    color: #fff;
    display: block;
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

/* ─── Footer ─── */
footer {
    padding: 60px 0;
    text-align: center;
}

.footer-title {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--accent-red);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

footer p {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #444;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.disclaimer {
    margin-top: 1rem;
    color: #333 !important;
    font-size: 0.75rem !important;
}

/* ─── Animations ─── */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.9s ease-out, transform 0.9s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Responsive ─── */
@media (max-width: 700px) {
    .hamburger {
        display: flex;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 10, 10, 0.98);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 32px;
        z-index: 1050;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        font-size: 1rem;
        letter-spacing: 3px;
    }

    section {
        padding: 80px 0;
    }

    .formula-block {
        flex-direction: column;
        align-items: flex-start;
    }

    .highlight-box {
        padding: 20px;
    }
}