:root {
    --bg-primary: #0a0a0b;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --accent-muted: #2a3a4a;
    --border-color: rgba(255, 255, 255, 0.08);
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --container-width: 1100px;
    --transition-speed: 0.15s;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* DNA Canvas Background */
#dna-canvas {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 40px;
}

/* Typography */
h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 24px;
}

h2 {
    font-size: 2.5rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin-bottom: 16px;
}

h3 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

p {
    font-size: 1rem;
    color: var(--text-secondary);
}

.subtext {
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

/* Header */
header {
    padding: 40px 0;
    position: absolute;
    width: 100%;
    top: 0;
    z-index: 100;
}

.wordmark {
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: -0.01em;
}

/* Sections */
section {
    padding: 120px 0;
}

/* Hero */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
}

.hero-content {
    max-width: 800px;
}

.cta-wrapper {
    margin-top: 48px;
}

.cta-quiet {
    display: inline-block;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border-bottom: 1px solid var(--text-primary);
    padding-bottom: 4px;
    transition: opacity var(--transition-speed);
}

.cta-quiet:hover {
    opacity: 0.7;
}

/* Grid */
.grid {
    display: grid;
    gap: 60px;
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

/* What We Do */
.what-we-do {
    border-top: 1px solid var(--border-color);
}

/* How We Work */
.how-we-work {
    /* Keep readability without "painting over" the DNA canvas */
    background: rgba(10, 10, 11, 0.28);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.process-list {
    display: flex;
    flex-direction: column;
}

.process-item {
    display: flex;
    align-items: center;
    padding: 32px 0;
    border-bottom: 1px solid var(--border-color);
}

.process-item .number {
    font-size: 0.75rem;
    font-weight: 600;
    margin-right: 48px;
    opacity: 0.4;
}

.process-item p {
    font-size: 1.25rem;
    color: var(--text-primary);
}

/* Filters */
.filters .label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 24px;
    color: var(--text-secondary);
}

.fit-column ul {
    list-style: none;
}

.fit-column li {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.fit-column .muted li {
    color: var(--text-secondary);
    opacity: 0.6;
}

/* Credibility */
.credibility {
    padding: 160px 0;
    text-align: center;
}

.statement {
    font-size: 1.5rem;
    color: var(--text-primary);
    max-width: 700px;
    margin: 0 auto;
}

/* Contact */
.contact {
    border-top: 1px solid var(--border-color);
    padding-bottom: 160px;
}

.contact-header {
    margin-bottom: 60px;
}

form {
    max-width: 500px;
}

.form-group {
    margin-bottom: 24px;
}

input, textarea {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 1rem;
    outline: none;
    transition: border-color var(--transition-speed);
}

input:focus, textarea:focus {
    border-bottom-color: var(--text-primary);
}

.submit-btn {
    background: var(--text-primary);
    color: var(--bg-primary);
    border: none;
    padding: 12px 32px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: opacity var(--transition-speed);
}

.submit-btn:hover {
    opacity: 0.9;
}

#form-success {
    margin-top: 24px;
    font-size: 0.9rem;
    color: #4ade80;
}

.hidden {
    display: none;
}

/* Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(10px);
}

/* Mobile */
@media (max-width: 768px) {
    .grid-3, .grid-2 {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    section {
        padding: 80px 0;
    }

    h1 {
        font-size: 3rem;
    }

    .process-item .number {
        margin-right: 24px;
    }
}