:root {
  --bg: #0b0b0b;
  --panel: #111;
  --text: #c8ffb0;
  --muted: #7fc87f;
  --accent: #8aff00; /* amber-ish green for terminal */
  --card: #141414;
  --link: #a3ff4a;
  --danger: #ff3b3b;
  --blue: #3bb6ff;
}

/* Theme palettes */
body[data-theme="amber"] {
  --bg: #0b0b0b; --panel: #111; --text: #e0d2a0; --muted: #a6945a; --accent: #e6b450; --link:#ffdd8a;
}
body[data-theme="vault"] {
  --bg: #061326; --panel:#0c1f3a; --text:#d6e6ff; --muted:#8bb1ff; --accent:#2ea3ff; --link:#7ec3ff;
}
body[data-theme="red"] {
  --bg: #0f0000; --panel:#1a0000; --text:#ffd6d6; --muted:#ff9b9b; --accent:#ff4d4d; --link:#ff7a7a;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  background: var(--bg); color: var(--text); line-height: 1.5;
}

.site-header { position: sticky; top: 0; background: var(--panel); border-bottom: 1px solid var(--muted); padding: .5rem 1rem; z-index: 10; }
.site-title { text-align: center; margin: .2rem 0 .5rem; letter-spacing: .2em; text-shadow: 0 0 6px rgba(255,255,255,.12); }
.top-nav { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-bottom: .5rem; }
.nav-link { color: var(--link); text-decoration: none; border-bottom: 1px dashed var(--muted); }
.nav-link:hover { color: var(--text); }
.controls { display: flex; gap: .5rem; justify-content: center; flex-wrap: wrap; }

.content { max-width: 1100px; margin: 1rem auto; padding: 0 1rem; }

.grid.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
.card { background: var(--card); padding: 1rem; border: 1px solid var(--muted); border-radius: 6px; text-decoration: none; color: var(--text); box-shadow: inset 0 0 0 1px rgba(255,255,255,.04); }
.card h2, .card h3 { margin-top: 0; }
.card:hover { outline: 1px solid var(--accent); transform: translateY(-2px); transition: transform .1s ease; }

.btn { background: transparent; color: var(--text); border: 1px solid var(--muted); padding: .4rem .6rem; border-radius: 4px; cursor: pointer; }
.btn:hover { border-color: var(--accent); color: var(--link); }
.btn.small { font-size: .9rem; padding: .3rem .5rem; }
.btn-terminal { color: var(--accent); }
.btn-screen { color: var(--blue); }

.hint { color: var(--muted); font-size: .9rem; }

/* Markdown output */
.md-container { background: var(--panel); border: 1px solid var(--muted); border-radius: 6px; padding: .75rem; }
.md-output h1,.md-output h2,.md-output h3 { border-bottom: 1px dashed var(--muted); padding-bottom: .2rem; }
.md-output pre { background: #000; border: 1px solid var(--muted); padding: .5rem; overflow:auto; }
.md-output code { color: var(--accent); }
.md-output a { color: var(--link); }

/* News */
.filters { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; background: var(--panel); border: 1px solid var(--muted); padding: .5rem; border-radius: 6px; }
.list .item { background: var(--panel); border: 1px solid var(--muted); margin: .5rem 0; padding: .5rem .75rem; border-radius: 6px; }
.item h4 { margin: .2rem 0; }
.item .meta { color: var(--muted); font-size: .9rem; }

/* Manuals folder style */
.folders { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.folder { border: 1px solid var(--muted); border-radius: 8px; background: linear-gradient(180deg, var(--panel), #0a0a0a); padding: .75rem; position: relative; }
.folder:before { content: ""; position: absolute; top: -.35rem; left: .75rem; width: 4rem; height: .5rem; background: var(--panel); border: 1px solid var(--muted); border-bottom: none; border-top-left-radius: 6px; border-top-right-radius: 6px; }
.folder h3 { margin-top: .5rem; }
.file { display: block; padding: .4rem .5rem; margin: .3rem 0; color: var(--link); text-decoration: none; border: 1px dashed transparent; }
.file:hover { border-color: var(--accent); }

/* Modals */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: none; align-items: center; justify-content: center; padding: 1rem; }
.modal.show { display: flex; }
.modal-dialog { width: min(900px, 95vw); border: 1px solid var(--muted); border-radius: 6px; overflow: hidden; }
.modal-header { display:flex; justify-content: space-between; align-items:center; padding: .4rem .6rem; border-bottom: 1px solid var(--muted); }
.modal-body { max-height: 70vh; overflow: auto; padding: .75rem; }
.close { background: transparent; color: var(--text); border: 1px solid var(--muted); border-radius: 4px; cursor: pointer; }

/* Terminal aesthetic */
.terminal { background: #000; color: #00ff7f; text-shadow: 0 0 6px rgba(0,255,127,.4); position: relative; }
.terminal:after { content:""; position:absolute; inset:0; background: repeating-linear-gradient(transparent, transparent 2px, rgba(0,0,0,.04) 3px); pointer-events:none; }

/* CRT screen aesthetic */
.screen { background: #021018; color: #9be3ff; box-shadow: inset 0 0 60px rgba(46,163,255,.15); position:relative; }
.screen:after { content:""; position:absolute; inset:0; background: radial-gradient(circle at 50% 50%, rgba(255,255,255,.06), transparent 60%); mix-blend-mode: screen; pointer-events:none; }

.site-footer { text-align:center; color: var(--muted); padding: 2rem 1rem; border-top: 1px solid var(--muted); }

@media (max-width: 600px) {
  .top-nav { gap: .6rem; }
  .controls { gap: .4rem; }
}