/* Crypto FirstTrace — Landing Page Styles
   Tone: approachable, empathetic, professional. Clean and trustworthy.
   No flashy animations. No dark patterns. No crypto-bro energy. */

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

:root {
    --color-bg: #fafafa;
    --color-surface: #ffffff;
    --color-text: #1a1a2e;
    --color-text-secondary: #4a4a6a;
    --color-accent: #2d5a9e;
    --color-accent-hover: #1e4080;
    --color-accent-light: #e8f0fe;
    --color-border: #e0e0e8;
    --color-success: #2e7d32;
    --color-warm: #5c3d2e;
    --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
    --max-width: 960px;
    --spacing: 1.5rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    font-size: 17px;
}

/* ---- Navigation ---- */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1.2rem var(--spacing);
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.logo .highlight {
    color: var(--color-accent);
}

.nav-cta {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.5rem 1rem;
    border: 2px solid var(--color-accent);
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
}

.nav-cta:hover {
    background: var(--color-accent);
    color: white;
}

/* ---- Sections (shared) ---- */
section {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 4rem var(--spacing);
}

h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

/* ---- Hero ---- */
.hero {
    text-align: center;
    padding: 6rem var(--spacing) 4rem;
}

.hero h1 {
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--color-text);
    letter-spacing: -0.03em;
}

.hero-sub {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    max-width: 640px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

/* ---- CTA Button ---- */
.cta-button {
    display: inline-block;
    background: var(--color-accent);
    color: white;
    padding: 0.85rem 2rem;
    border-radius: 8px;
    font-size: 1.05rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.cta-button:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

.cta-button:active {
    transform: translateY(0);
}

/* ---- Features ---- */
.features {
    text-align: center;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin-top: 1rem;
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2rem 1.5rem;
    text-align: left;
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.6rem;
    color: var(--color-text);
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ---- How It Works ---- */
.how-it-works {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    max-width: 100%;
    padding: 4rem var(--spacing);
}

.how-it-works h2,
.how-it-works .steps {
    max-width: var(--max-width);
    margin-left: auto;
    margin-right: auto;
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 1rem;
}

.step {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.step-number {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: var(--color-accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.step-content h3 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.step-content p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* ---- Pricing ---- */
.pricing {
    text-align: center;
}

.pricing-single {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.pricing-single .pricing-card {
    max-width: 420px;
    width: 100%;
}

.pricing-tagline {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 1rem;
}

.pricing-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2.5rem 2rem;
    text-align: left;
}

.pricing-card.featured {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 1px var(--color-accent);
}

.pricing-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.pricing-card ul {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-card li {
    padding: 0.4rem 0;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    border-bottom: 1px solid var(--color-border);
}

.pricing-card li:last-child {
    border-bottom: none;
}

/* ---- Trust ---- */
.trust {
    text-align: center;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 1rem;
}

.trust-item {
    text-align: left;
    padding: 1.5rem;
    background: var(--color-accent-light);
    border-radius: 10px;
}

.trust-item h3 {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.trust-item p {
    font-size: 0.93rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ---- Disclaimer ---- */
.disclaimer {
    background: #f5f0eb;
    border-radius: 8px;
    padding: 1.5rem 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
    font-size: 0.88rem;
    color: var(--color-warm);
    line-height: 1.7;
}

/* ---- Signup ---- */
.signup {
    text-align: center;
    padding-bottom: 6rem;
}

.signup p {
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
}

.signup-form {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.signup-form input[type="email"] {
    padding: 0.85rem 1.2rem;
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    width: 320px;
    max-width: 100%;
    font-family: var(--font-main);
    transition: border-color 0.2s;
}

.signup-form input[type="email"]:focus {
    outline: none;
    border-color: var(--color-accent);
}

.signup-note {
    font-size: 0.82rem;
    color: var(--color-text-secondary);
    opacity: 0.7;
}

/* ---- Footer ---- */
footer {
    text-align: center;
    padding: 2rem var(--spacing);
    border-top: 1px solid var(--color-border);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    .hero-sub {
        font-size: 1rem;
    }
    .feature-grid,
    .pricing-grid,
    .trust-grid {
        grid-template-columns: 1fr;
    }
    .signup-form input[type="email"] {
        width: 100%;
    }
    section {
        padding: 3rem var(--spacing);
    }
}