/* BlockWatch marketing site styles */

:root {
    --bg: #0d1117;
    --bg-subtle: #161b22;
    --bg-card: #1c2128;
    --border: #30363d;
    --text: #e6edf3;
    --text-muted: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #79b8ff;
    --green: #3fb950;
    --radius: 8px;
    --font: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

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

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

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

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* ---------- Navigation ---------- */
nav {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
}

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

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color 0.15s;
}

.nav-links a:hover {
    color: var(--text);
    text-decoration: none;
}

/* ---------- Hero ---------- */
.hero {
    min-height: calc(100vh - 65px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 2rem;
}

.hero-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(88, 166, 255, 0.1);
    border: 1px solid rgba(88, 166, 255, 0.3);
    border-radius: 999px;
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
    max-width: 760px;
}

.hero h1 em {
    font-style: normal;
    color: var(--accent);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 560px;
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.7rem 1.4rem;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: #0d1117;
}

.btn-primary:hover {
    background: var(--accent-hover);
    color: #0d1117;
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-subtle);
    color: var(--text);
    text-decoration: none;
    border-color: var(--accent);
}

/* ---------- Sections ---------- */
section {
    padding: 5rem 2rem;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

.section-label {
    text-align: center;
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.section-title {
    text-align: center;
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.section-sub {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 560px;
    margin: 0 auto 3.5rem;
}

/* ---------- How it works ---------- */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.step {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    position: relative;
    transition: border-color 0.15s;
}

.step:hover {
    border-color: var(--accent);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    background: rgba(88, 166, 255, 0.15);
    border: 1px solid rgba(88, 166, 255, 0.3);
    border-radius: 50%;
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.step-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    display: block;
}

.step h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

/* ---------- Features ---------- */
.features-bg {
    background: var(--bg-subtle);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.feature {
    padding: 1.5rem;
    border-radius: var(--radius);
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: border-color 0.15s, transform 0.15s;
}

.feature:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    display: block;
}

.feature h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.feature p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.install-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.install-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.code-block {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.9rem 1rem;
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--green);
    overflow-x: auto;
    white-space: nowrap;
    cursor: pointer;
    transition: border-color 0.15s;
    position: relative;
}

.code-block:hover {
    border-color: var(--accent);
}

.code-block::after {
    content: 'Click to copy';
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font);
}

.install-note {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ---------- Footer ---------- */
footer {
    background: var(--bg-subtle);
    border-top: 1px solid var(--border);
    padding: 2.5rem 2rem;
    text-align: center;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color 0.15s;
}

.footer-links a:hover {
    color: var(--text);
    text-decoration: none;
}

footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
    nav {
        padding: 0.75rem 1.25rem;
    }

    .nav-links {
        display: none;
    }

    .hero {
        padding: 3rem 1.25rem;
    }

    section {
        padding: 3.5rem 1.25rem;
    }

    .steps,
    .features-grid,
    .install-grid {
        grid-template-columns: 1fr;
    }
}