:root {
  --bg: #0a0a0f;
  --surface: #111118;
  --surface2: #16161f;
  --border: #1e1e2e;
  --green: #00e676;
  --green-dim: #00c853;
  --green-glow: rgba(0,230,118,0.12);
  --text: #e0e0e0;
  --text-dim: #888;
  --text-faint: #444;
  --yellow: #ffc800;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Courier New', Courier, monospace;
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg, transparent, transparent 2px,
    rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

header {
  border-bottom: 1px solid var(--border);
  padding: 28px 32px 20px;
  background: var(--surface);
}

header h1 {
  font-size: 1.6rem;
  color: var(--green);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

header p {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-top: 4px;
  letter-spacing: 0.04em;
}

nav {
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
}

nav button {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text-dim);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  padding: 14px 16px;
  text-transform: uppercase;
  transition: color 0.15s, border-color 0.15s;
}

nav button:hover { color: var(--green); }
nav button.active { color: var(--green); border-bottom-color: var(--green); }

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 32px 80px;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

h2 {
  color: var(--green);
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
}

h3 {
  color: var(--green-dim);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  margin: 28px 0 12px;
  text-transform: uppercase;
}

p { margin-bottom: 14px; color: var(--text); }

a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s;
}
a:hover { border-bottom-color: var(--green); }
ul, ol {
  margin: 10px 0 16px 0;
  padding-left: 0;
  list-style: none;
}

ul li, ol li {
  padding: 4px 0 4px 20px;
  position: relative;
  color: var(--text);
}

ul li::before { content: '>'; position: absolute; left: 0; color: var(--green); }

ol { counter-reset: list; }
ol li { counter-increment: list; }
ol li::before { content: counter(list) '.'; position: absolute; left: 0; color: var(--green); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 20px 24px;
  margin: 16px 0;
  transition: border-color 0.2s;
}
.card:hover { border-color: var(--green); }
.card h3 { margin-top: 0; }

.badge {
  display: inline-block;
  background: var(--green-glow);
  border: 1px solid var(--green);
  color: var(--green);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  padding: 2px 8px;
  border-radius: 2px;
  text-transform: uppercase;
  margin-left: 10px;
  vertical-align: middle;
}
.badge.soon {
  background: rgba(255,200,0,0.1);
  border-color: var(--yellow);
  color: var(--yellow);
}

.module-grid { display: grid; gap: 16px; margin-top: 16px; }
.module-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  padding: 18px 22px;
  border-radius: 0 4px 4px 0;
  transition: background 0.15s;
}
.module-card:hover { background: var(--surface2); }
.module-card .module-id { color: var(--green); font-size: 0.82rem; letter-spacing: 0.1em; margin-bottom: 6px; }
.module-card .module-name { font-size: 1rem; color: var(--text); margin-bottom: 6px; }
.module-card .module-desc { color: var(--text-dim); font-size: 0.83rem; line-height: 1.5; }
.module-card .module-links { margin-top: 12px; }
.module-card .module-links a { font-size: 0.8rem; margin-right: 16px; }

.app-list { display: grid; gap: 12px; margin-top: 12px; }
.app-item {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 14px 18px;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.app-item strong { color: var(--text); font-size: 0.9rem; }
.app-item span { color: var(--text-dim); font-size: 0.82rem; }
.app-item a { font-size: 0.8rem; align-self: flex-start; margin-top: 4px; }

.info-block {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  padding: 14px 18px;
  margin: 16px 0;
  border-radius: 0 4px 4px 0;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 16px 0;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--green);
  color: var(--green);
  padding: 8px 16px;
  border-radius: 3px;
  font-family: inherit;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background 0.15s;
}
.link-btn:hover { background: var(--green-glow); border-bottom-color: transparent; }

pre {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 16px;
  overflow-x: auto;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin: 14px 0;
  white-space: pre-wrap;
}

.wallpaper-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 16px 0;
}
.wallpaper-grid a img {
  width: 100%;
  border-radius: 4px;
  border: 1px solid var(--border);
  display: block;
  transition: border-color 0.2s;
}
.wallpaper-grid a:hover img { border-color: var(--green); border-bottom-color: var(--green); }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 20px;
  text-align: center;
  transition: border-color 0.2s;
}
.contact-card:hover { border-color: var(--green); }
.contact-card .contact-icon { font-size: 1.8rem; margin-bottom: 10px; display: block; }
.contact-card .contact-label { color: var(--green); font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 6px; }
.contact-card .contact-value { color: var(--text-dim); font-size: 0.83rem; margin-bottom: 14px; }

footer {
  text-align: center;
  border-top: 1px solid var(--border);
  padding: 20px 32px;
  color: var(--text-faint);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}
footer a { color: var(--text-dim); }

@media (max-width: 600px) {
  header { padding: 20px 16px; }
  main { padding: 24px 16px 60px; }
  nav { padding: 0 8px; }
  nav button { padding: 12px 10px; font-size: 0.7rem; }
  .wallpaper-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}