:root {
    --bg: #fbfaf9;
    --text: #1a1a1a;
    --text-muted: #666;
    --border: #333;
    /* Dark border for high contrast "technical" look */
    --border-light: #e5e5e5;
    --accent: #0044cc;
    /* Technical Blue */
    --accent-hover: #003399;
    --font-ui: system-ui, -apple-system, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    --radius: 0px;
    /* Sharp corners */
    --spacing: 1.5rem;
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-ui);
    line-height: 1.5;
    margin: 0;
    min-height: 100vh;
}

h1,
h2,
h3,
.brand,
.price,
.step-num {
    font-family: var(--font-mono);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.container {
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 var(--spacing);
}

/* Header */
header {
    border-bottom: 1px solid var(--border-light);
    padding: 1rem 0;
    margin-bottom: 3rem;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    font-size: 1.125rem;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
}

.nav-links a {
    margin-left: 2rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.btn.primary {
    background: var(--text);
    color: white;
    border-color: var(--text);
}

.btn.primary:hover {
    background: transparent;
    color: var(--text);
}

.btn:disabled {
    background: var(--border-light);
    border-color: var(--border-light);
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.7;
}

.btn.secondary,
.btn.outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

.btn.secondary:hover,
.btn.outline:hover {
    background: var(--border-light);
}

.btn.full-width {
    width: 100%;
}

/* Hero */
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 5rem;
}

.hero-content h1 {
    font-size: 3rem;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.cta-group {
    display: flex;
    gap: 1rem;
}

/* Code Snippet */
.code-block {
    background: #111;
    color: #eee;
    padding: 1rem;
    border-radius: 4px;
    /* Slight radius for terminal feel */
    font-family: var(--font-mono);
    font-size: 0.85rem;
    border: 1px solid #000;
    box-shadow: 4px 4px 0px rgba(0, 0, 0, 0.1);
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    border-bottom: 1px solid #333;
    padding-bottom: 0.5rem;
}

.lang {
    color: #666;
    text-transform: uppercase;
    font-size: 0.7rem;
}

.copy-btn {
    background: none;
    border: 1px solid #444;
    color: #888;
    font-size: 0.7rem;
    padding: 2px 6px;
    cursor: pointer;
}

.copy-btn:hover {
    border-color: #888;
    color: #fff;
}

pre {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-all;
}

/* Pricing */
.pricing-section {
    margin-bottom: 5rem;
}

.pricing-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--text);
    padding-bottom: 1rem;
}

.toggle-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.billing-toggle {
    background: var(--border);
    border: none;
    width: 48px;
    height: 24px;
    border-radius: 12px;
    position: relative;
    cursor: pointer;
}

.billing-toggle .knob {
    position: absolute;
    left: 2px;
    top: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform 0.2s;
}

.billing-toggle[aria-checked="true"] .knob {
    transform: translateX(24px);
    background: var(--accent);
}

.discount {
    color: var(--accent);
    font-size: 0.8rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    border: 1px solid var(--border);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    background: white;
}

.card.highlight {
    border: 2px solid var(--text);
    position: relative;
    box-shadow: 8px 8px 0px rgba(0, 0, 0, 0.05);
    /* Technical shadow */
}

.card-header {
    margin-bottom: 2rem;
}

.card-header h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card-header .price {
    font-size: 2.5rem;
}

.period {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.features {
    list-style: none;
    padding: 0;
    margin: 0 0 2rem 0;
    flex-grow: 1;
}

.features li {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.icon.check {
    color: var(--accent);
    font-weight: bold;
}

.security-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 1rem;
    text-align: center;
    border-top: 1px dashed var(--border-light);
    padding-top: 0.5rem;
}

/* Steps */
.how-it-works {
    margin-bottom: 5rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    border-top: 1px solid var(--border-light);
    padding-top: 2rem;
}

.step-num {
    display: block;
    font-size: 3rem;
    color: var(--border-light);
    margin-bottom: 0.5rem;
}

/* FAQ */
.faq {
    margin-bottom: 5rem;
    max-width: 800px;
}

.faq-item {
    border-bottom: 1px solid var(--border-light);
}

details {
    padding: 1.5rem 0;
}

summary {
    cursor: pointer;
    font-weight: 600;
    list-style: none;
    /* Hide default arrow */
    display: flex;
    justify-content: space-between;
    align-items: center;
}

summary::after {
    content: '+';
    font-family: var(--font-mono);
}

details[open] summary::after {
    content: '-';
}

.faq-content {
    margin-top: 1rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Trust Footer */
.trust-footer {
    display: flex;
    gap: 2rem;
    justify-content: center;
    padding: 3rem 0;
    background: #f4f4f4;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 3rem;
}

.trust-badge {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Mobile */
@media (max-width: 768px) {

    .hero-grid,
    .steps-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .pricing-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}