/* riotduck — landing page styles */

:root {
  --bg:        #0a1118;
  --bg-card:   #0f1820;
  --bg-code:   #131e2a;
  --border:    #1e2a3a;
  --border-2:  #28384c;
  --text:      #e2e8f0;
  --text-dim:  #94a3b8;
  --text-mute: #64748b;
  --green:     #3df58a;
  --green-dim: #1fb96a;
  --amber:     #fbbf24;
  --magenta:   #f472b6;
  --shadow:    0 12px 28px rgba(0,0,0,0.35);

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(61, 245, 138, 0.06), transparent 70%),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(251, 191, 36, 0.04), transparent 60%),
    var(--bg);
  min-height: 100vh;
}

a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 120ms ease, color 120ms ease;
}
a:hover { border-bottom-color: var(--green); }

code, pre {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

/* ---------- top nav ---------- */

nav.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 32px;
  max-width: 1080px;
  margin: 0 auto;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 20px;
}
.wordmark .dot { color: var(--green); }
.wordmark img { width: 28px; height: 28px; }

nav.topnav a.nav-link {
  color: var(--text-dim);
  font-weight: 500;
  font-size: 14px;
}
nav.topnav a.nav-link:hover { color: var(--text); border-bottom-color: var(--text); }

/* ---------- hero ---------- */

.hero {
  padding: 56px 32px 80px;
  max-width: 1080px;
  margin: 0 auto;
  text-align: center;
}

.hero-logo {
  width: 156px;
  height: 156px;
  filter: drop-shadow(0 8px 24px rgba(61, 245, 138, 0.18));
}

.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 18px 0 14px;
  background: linear-gradient(180deg, #ffffff 0%, #a8b5c7 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .tagline {
  color: var(--text-dim);
  font-size: clamp(16px, 2vw, 19px);
  max-width: 640px;
  margin: 0 auto;
}

.hero .accent { color: var(--green); font-weight: 600; }

.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 32px;
  flex-wrap: wrap;
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  transition: transform 100ms ease, background 150ms ease, border-color 150ms ease;
}
.cta.primary {
  background: var(--green);
  color: #062014;
  border-color: var(--green);
}
.cta.primary:hover { background: #5cffa0; }
.cta.secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border-2);
}
.cta.secondary:hover { border-color: var(--text-dim); }
.cta:active { transform: translateY(1px); }

/* ---------- shared sections ---------- */

section {
  padding: 64px 32px;
  max-width: 1080px;
  margin: 0 auto;
}

section h2 {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}

section .sub {
  color: var(--text-dim);
  margin-bottom: 32px;
  max-width: 720px;
}

/* ---------- feature cards ---------- */

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 24px;
  transition: border-color 150ms ease, transform 150ms ease;
}
.feature:hover {
  border-color: var(--border-2);
  transform: translateY(-2px);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 9px;
  background: rgba(61, 245, 138, 0.10);
  color: var(--green);
  border: 1px solid rgba(61, 245, 138, 0.25);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 18px;
  margin-bottom: 16px;
}

.feature.amber .feature-icon {
  background: rgba(251, 191, 36, 0.10);
  color: var(--amber);
  border-color: rgba(251, 191, 36, 0.25);
}

.feature h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.feature p {
  color: var(--text-dim);
  margin: 0;
  font-size: 14.5px;
  line-height: 1.55;
}

/* ---------- quick start ---------- */

.quickstart pre {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 22px;
  overflow-x: auto;
  margin: 0;
  box-shadow: var(--shadow);
}
.quickstart pre code {
  color: var(--text);
}
.quickstart .caption {
  color: var(--text-mute);
  font-size: 14px;
  margin-top: 14px;
}

.quickstart .terminal {
  margin-top: 28px;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.terminal .titlebar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: #0c1620;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-mute);
}
.terminal .titlebar .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border-2); }
.terminal .body {
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text);
  white-space: pre-wrap;
}
.terminal .body .ts    { color: var(--text-mute); }
.terminal .body .topic { color: var(--green); }
.terminal .body .down  { color: var(--amber); }
.terminal .body .id    { color: var(--magenta); }

/* ---------- pipeline ---------- */

.pipeline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 24px 0 28px;
}
.step {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border: 1px solid var(--border-2);
  background: var(--bg-card);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--text);
}
.step.alt { color: var(--amber); border-color: rgba(251, 191, 36, 0.35); }
.arrow { color: var(--text-mute); font-family: var(--font-mono); }

.how ul {
  color: var(--text-dim);
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px 28px;
}
.how ul li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
}
.how ul li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}
.how ul li code {
  background: var(--bg-code);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text);
}

/* ---------- hardware grid ---------- */

.hardware-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.hardware-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}
.hardware-card h4 {
  margin: 0 0 12px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-mute);
  font-weight: 700;
}
.hardware-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text-dim);
  font-size: 14.5px;
}
.hardware-card li {
  padding: 6px 0;
  border-bottom: 1px dashed var(--border);
}
.hardware-card li:last-child { border-bottom: 0; }

/* ---------- footer ---------- */

footer {
  padding: 48px 32px 64px;
  text-align: center;
  color: var(--text-mute);
  font-size: 14px;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}
footer a { color: var(--text-dim); }
footer a:hover { color: var(--text); border-bottom-color: var(--text); }
footer .dot { padding: 0 8px; color: var(--text-mute); }

/* ---------- responsive ---------- */

@media (max-width: 640px) {
  nav.topnav { padding: 16px 20px; }
  .hero { padding: 32px 20px 48px; }
  .hero-logo { width: 120px; height: 120px; }
  section { padding: 48px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}