/* ── Tokens ── */
:root {
  --accent:       #9b7fd4;
  --accent-light: #c4a8f0;
  --accent-dark:  #7b5fb4;
  --accent-bg:    #f3eeff;
  --text:         #1a1a2e;
  --text-muted:   #6b6b8a;
  --border:       #e2dff0;
  --bg:           #ffffff;
  --bg-subtle:    #fafafa;
  --code-bg:      #f5f2ff;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Mono', monospace;
  --radius:       8px;
  --shadow:       0 1px 3px rgba(0,0,0,0.08), 0 4px 16px rgba(0,0,0,0.04);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-dark); text-decoration: none; }
a:hover { color: var(--accent); }

/* ── Layout ── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.logo-text {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.main-nav a {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.15s, background 0.15s;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--accent-dark);
  background: var(--accent-bg);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--text);
  margin-left: auto;
}

/* ── Hero ── */
.hero {
  padding: 80px 0 72px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 20px;
}

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

.hero-sub {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s;
  border: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: var(--accent-dark);
  color: white;
}

.btn-secondary {
  background: var(--bg);
  color: var(--text);
  border: 1.5px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
}

/* ── Feature cards ── */
.features {
  padding: 72px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 48px;
}

.feature-card {
  padding: 28px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.feature-card:hover {
  border-color: var(--accent-light);
  box-shadow: var(--shadow);
}

.feature-icon {
  font-size: 28px;
  margin-bottom: 14px;
}

.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Section headings ── */
.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

/* ── How it works ── */
.how-it-works {
  padding: 72px 0;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.step {
  text-align: center;
}

.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent-bg);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.step h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── Code block ── */
.code-demo {
  padding: 72px 0;
}

.code-block {
  background: var(--text);
  color: #e8e0f5;
  border-radius: var(--radius);
  padding: 28px 32px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
  overflow-x: auto;
  margin-top: 32px;
}

.code-block .comment { color: #7a7390; }
.code-block .accent  { color: var(--accent-light); }
.code-block .ok      { color: #7ecfa0; }

/* ── Supported hardware ── */
.hardware-section {
  padding: 72px 0;
  border-top: 1px solid var(--border);
}

.hardware-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 40px;
}

.hardware-card {
  padding: 24px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.hardware-status {
  font-size: 20px;
  flex-shrink: 0;
}

.hardware-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.hardware-card p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── CTA section ── */
.cta-section {
  padding: 72px 0;
  text-align: center;
  background: var(--accent-bg);
  border-top: 1px solid var(--border);
}

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

.site-footer a {
  color: var(--text-muted);
}

.site-footer a:hover {
  color: var(--accent);
}

.footer-sub {
  margin-top: 4px;
  font-size: 12px;
  opacity: 0.7;
}

/* ── Inline code ── */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--code-bg);
  color: var(--accent-dark);
  padding: 2px 6px;
  border-radius: 4px;
}

pre {
  background: var(--text);
  color: #e8e0f5;
  padding: 20px 24px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  margin: 20px 0;
}

pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid var(--border);
    padding: 12px 24px;
    gap: 4px;
  }
  .nav-toggle { display: block; }
  .hero { padding: 48px 0; }
  .features, .how-it-works, .code-demo, .hardware-section, .cta-section { padding: 48px 0; }
}