/* ============================================================
   HERCLESTEIN TERMINAL — Design System
   Mono terminal aesthetic, dark/green, CRT-flavored.
   ============================================================ */

:root {
  --bg: #060a08;
  --bg-card: #0d1310;
  --bg-raised: #121a16;
  --border: #1c2b23;
  --border-bright: #234032;
  --green: #00ff66;
  --green-dim: #00cc52;
  --green-dark: #062e17;
  --amber: #ffb454;
  --red: #ff5566;
  --text: #d8f5e2;
  --text-muted: #5f8271;
  --text-dim: #3d5a4a;
  --radius: 3px;
  --mono: 'IBM Plex Mono', 'Consolas', monospace;
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.6;
}

body {
  background-image:
    linear-gradient(rgba(0,255,102,0.02) 1px, transparent 1px);
  background-size: 100% 3px;
}

::selection { background: var(--green-dark); color: var(--green); }

a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 920px; margin: 0 auto; padding: 0 1.25rem; }

/* ---------- Terminal chrome ---------- */
.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding: 0.85rem 1.25rem;
  background: rgba(13,19,16,0.9);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.terminal-header .left { display: flex; align-items: center; gap: 0.75rem; }
.terminal-header .dots { display: flex; gap: 0.35rem; }
.terminal-header .dots span {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--border-bright);
}
.terminal-header .title {
  font-weight: 600; letter-spacing: 0.04em; font-size: 0.82rem;
  color: var(--text);
}
.terminal-header .status {
  font-size: 0.68rem; color: var(--text-muted); display: flex; align-items: center; gap: 0.4rem;
}
.terminal-header .status .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--green);
  box-shadow: 0 0 6px var(--green);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.35} }

.lang-toggle {
  background: var(--bg-raised);
  border: 1px solid var(--border-bright);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: 0.15s;
}
.lang-toggle:hover { border-color: var(--green); color: var(--green); }

.terminal-body { padding: 2rem 0 3rem; }

.terminal-footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem;
  text-align: center;
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

.back-link {
  display: inline-block;
  color: var(--text-muted);
  font-size: 0.72rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px dotted var(--text-dim);
}
.back-link:hover { color: var(--green); text-decoration: none; border-color: var(--green); }

/* ---------- Cards / sections ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}
.card:hover { border-color: var(--border-bright); }

.eyebrow {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-dim);
  margin-bottom: 0.5rem;
  display: block;
}

h1, h2, h3 { font-family: var(--mono); color: var(--text); font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: 1.9rem; margin: 0 0 0.5rem; }
h2 { font-size: 1.25rem; margin: 0 0 0.75rem; }
h3 { font-size: 1rem; margin: 0 0 0.5rem; }

p.prose, .prose p, .prose li {
  font-family: var(--sans);
  color: var(--text);
  font-size: 0.92rem;
}
.prose { max-width: 68ch; }

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius);
  cursor: pointer;
  border: 2px solid var(--green);
  background: var(--green-dark);
  color: var(--green);
  transition: 0.15s;
}
.btn:hover { background: rgba(0,255,102,0.12); }
.btn.btn-ghost { background: transparent; border-color: var(--border-bright); color: var(--text); }
.btn.btn-ghost:hover { border-color: var(--green); color: var(--green); }
.btn.btn-danger { border-color: var(--red); background: rgba(255,85,102,0.08); color: var(--red); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---------- Forms ---------- */
input, select, textarea {
  width: 100%;
  background: var(--bg-raised);
  border: 1px solid var(--border-bright);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.65rem 0.8rem;
  border-radius: var(--radius);
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(0,255,102,0.12);
}
label { display: block; font-size: 0.72rem; color: var(--text-muted); margin-bottom: 0.35rem; letter-spacing: 0.03em; }
.field { margin-bottom: 1rem; }

/* ---------- Badges / tags ---------- */
.badge {
  display: inline-block;
  font-size: 0.62rem;
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  letter-spacing: 0.04em;
  border: 1px solid var(--border-bright);
  color: var(--text-muted);
}
.badge.badge-green { color: var(--green); border-color: var(--green-dim); background: rgba(0,255,102,0.06); }
.badge.badge-amber { color: var(--amber); border-color: var(--amber); background: rgba(255,180,84,0.06); }
.badge.badge-red { color: var(--red); border-color: var(--red); background: rgba(255,85,102,0.06); }

/* ---------- Table ---------- */
table { width: 100%; border-collapse: collapse; font-size: 0.8rem; }
th, td { text-align: left; padding: 0.6rem 0.7rem; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 600; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em; }

/* ---------- Signature: boot / typing effect ---------- */
.boot-line {
  font-size: 0.78rem;
  color: var(--green-dim);
  white-space: nowrap;
  overflow: hidden;
  border-right: 2px solid var(--green);
}

.cursor-blink::after {
  content: '_';
  color: var(--green);
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Utility ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.stack { display: flex; flex-direction: column; gap: 0.75rem; }
.center { text-align: center; }
.mt-1 { margin-top: 1rem; } .mt-2 { margin-top: 2rem; }
.hidden { display: none !important; }

@media (max-width: 640px) {
  .grid-2 { grid-template-columns: 1fr; }
  h1 { font-size: 1.5rem; }
}