:root {
  --bg: #0f0f14;
  --bg-elevated: #18181f;
  --bg-card: #1e1e28;
  --text: #e8e8ed;
  --text-muted: #9898a8;
  --accent: #8b5cf6;
  --accent-hover: #a78bfa;
  --accent-dim: rgba(139, 92, 246, 0.15);
  --border: #2a2a36;
  --warning: #fbbf24;
  --radius: 12px;
  --max-width: 960px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

code {
  font-family: ui-monospace, "Cascadia Code", "Fira Code", monospace;
  font-size: 0.875em;
  background: var(--bg-elevated);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
}

.logo:hover {
  color: var(--text);
  text-decoration: none;
}

.logo img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

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

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

.lang-switch {
  display: flex;
  gap: 0.25rem;
  font-size: 0.85rem;
}

.lang-switch a {
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  color: var(--text-muted);
  text-decoration: none;
}

.lang-switch a.active,
.lang-switch a:hover {
  color: var(--text);
  background: var(--bg-card);
}

.lang-switch a.active {
  color: var(--accent);
}

/* Hero */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.25rem 2.5rem;
  text-align: center;
}

.hero-logo {
  width: min(280px, 80vw);
  margin: 0 auto 1.5rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 800;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.hero .tagline-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 1.5rem;
  line-height: 1.5;
}

.hero .tagline {
  font-size: 1.125rem;
  color: var(--text);
  max-width: 640px;
  margin: 0 auto 0.35rem;
  line-height: 1.5;
  font-weight: 500;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(251, 191, 36, 0.12);
  color: var(--warning);
  border: 1px solid rgba(251, 191, 36, 0.25);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.85rem;
  margin-bottom: 1.75rem;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: background 0.15s, transform 0.15s;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}

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

.btn-secondary:hover {
  background: var(--bg-elevated);
  color: var(--text);
}

/* Sections */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
}

section {
  margin-bottom: 3rem;
}

section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent-dim);
}

/* Features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.feature-card .icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.4rem;
}

.feature-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.tag {
  background: var(--accent-dim);
  color: var(--accent-hover);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
}

/* Screenshots */
.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.screenshot-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.screenshot-item img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.screenshot-item figcaption {
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  text-align: center;
}

/* Steps */
.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding: 0 0 1.25rem 2.75rem;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2rem;
  height: 2rem;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
}

.steps li:last-child {
  padding-bottom: 0;
}

.note {
  background: var(--bg-elevated);
  border-left: 3px solid var(--accent);
  padding: 0.85rem 1rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

.requirements {
  list-style: none;
  padding: 0;
  margin: 0;
}

.requirements li {
  padding: 0.4rem 0 0.4rem 1.5rem;
  position: relative;
}

.requirements li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.credits-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.credits-list li {
  padding: 0.35rem 0;
}

.disclaimer {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.25rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 0.75rem;
}

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

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

/* 404 */
.error-page {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.25rem;
}

.error-page h1 {
  font-size: 4rem;
  margin: 0;
  color: var(--accent);
}

.error-page p {
  color: var(--text-muted);
  margin: 0.5rem 0 1.5rem;
}

@media (max-width: 600px) {
  .header-nav .nav-links {
    display: none;
  }

  .hero {
    padding-top: 2rem;
  }
}