:root {
  --bg-primary: #0f1729;
  --bg-secondary: #162036;
  --bg-card: #1c2940;
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --accent: #1D9BF0;
  --accent-hover: #1a8cd8;
  --border: #30363d;
  --radius: 12px;
  --max-width: 1100px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.nav-logo {
  width: 28px;
  height: 28px;
  background: var(--accent);
  border-radius: 6px;
  padding: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 0.2s;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: background 0.2s, transform 0.1s;
  border: none;
  cursor: pointer;
}

.btn:active {
  transform: scale(0.97);
}

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

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

.btn-sponsor,
.nav-links .btn-sponsor {
  background: transparent;
  color: #db61a2;
  border: 1px solid #db61a2;
}

.btn-sponsor:hover,
.nav-links .btn-sponsor:hover {
  background: #db61a2;
  color: #fff;
}

.btn-sponsor:hover .heart-icon {
  fill: #fff;
}

.heart-icon {
  width: 16px;
  height: 16px;
  fill: #db61a2;
  transition: fill 0.2s;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--text-secondary);
}

/* Sections */
section {
  padding: 80px 24px;
}

section:nth-child(even) {
  background: var(--bg-secondary);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 18px;
  margin-bottom: 48px;
  max-width: 600px;
}

.section-center {
  text-align: center;
}

.section-center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* Hero */
.hero {
  text-align: center;
  padding: 100px 24px 80px;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero .subtitle {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.hero-badges {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-badges img {
  height: 44px;
}

.hero-meta {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-image {
  max-width: 700px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
}

.hero-image img {
  width: 100%;
  display: block;
}

/* Features grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.2s;
}

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

.feature-icon {
  font-size: 28px;
  margin-bottom: 12px;
  display: block;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
}

/* Screenshots */
.screenshots-carousel {
  position: relative;
  display: flex;
  align-items: center;
}

.screenshots-row {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 8px 0;
  scroll-snap-type: x mandatory;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.screenshots-row::-webkit-scrollbar {
  display: none;
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  transition: opacity 0.3s, background 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-arrow:hover {
  background: var(--bg-card);
}

.carousel-arrow-left {
  left: -22px;
}

.carousel-arrow-right {
  right: -22px;
}

.screenshot-frame {
  flex-shrink: 0;
  width: 200px;
  border-radius: 20px;
  overflow: hidden;
  border: 2px solid var(--border);
  transition: transform 0.3s, border-color 0.3s;
  scroll-snap-align: center;
}

.screenshot-frame:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.screenshot-frame img {
  width: 100%;
  display: block;
}

/* Servers */
.server-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 32px;
}

.server-tag {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--text-primary);
}

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

.server-tag.recommended {
  border-color: var(--accent);
  color: var(--accent);
}

/* Steps */
.steps {
  display: flex;
  gap: 32px;
  margin-top: 40px;
}

.step {
  flex: 1;
  text-align: center;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step p {
  color: var(--text-secondary);
  font-size: 14px;
}

.step a {
  font-size: 14px;
}

/* Open source */
.open-source-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.open-source-card h3 {
  font-size: 24px;
  margin-bottom: 12px;
}

.open-source-card p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 16px;
}

.open-source-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Community */
.community-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.community-link {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 36px;
  text-align: center;
  transition: border-color 0.2s;
  min-width: 200px;
}

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

.community-link .link-icon {
  font-size: 28px;
  margin-bottom: 8px;
  display: block;
}

.community-link h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.community-link p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links {
  display: flex;
  gap: 16px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 13px;
}

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

.footer-credit {
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-secondary);
  opacity: 0.7;
}

.footer-credit a {
  color: var(--text-secondary);
  text-decoration: underline;
}

.footer-credit a:hover {
  color: var(--text-primary);
}

/* GitHub icon */
.github-icon {
  width: 20px;
  height: 20px;
  fill: var(--text-secondary);
  transition: fill 0.2s;
  vertical-align: middle;
}

.github-icon:hover {
  fill: var(--text-primary);
}

/* Policy page */
.policy-content h2 {
  font-size: 22px;
  font-weight: 600;
  margin-top: 36px;
  margin-bottom: 12px;
}

.policy-content p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 12px;
}

.policy-content ul {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 12px;
  padding-left: 24px;
}

.policy-content li {
  margin-bottom: 4px;
}

.policy-content strong {
  color: var(--text-primary);
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 32px;
  }

  .hero .subtitle {
    font-size: 16px;
  }

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

  .steps {
    flex-direction: column;
    gap: 24px;
  }

  .screenshots-row {
    gap: 12px;
  }

  .screenshot-frame {
    width: 160px;
  }

  .carousel-arrow {
    width: 36px;
    height: 36px;
    font-size: 20px;
  }

  .carousel-arrow-left {
    left: -8px;
  }

  .carousel-arrow-right {
    right: -8px;
  }

  section {
    padding: 56px 20px;
  }

  .section-title {
    font-size: 24px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .nav-links .nav-link-text {
    display: none;
  }

  .nav-links {
    gap: 8px;
  }

  .nav-links .btn {
    padding: 8px 12px;
    font-size: 13px;
  }

  .nav-links .btn-sponsor .sponsor-label {
    display: none;
  }

  .nav-links .btn-sponsor {
    padding: 8px;
  }
}