/* ── AquaLogic IQ — Shared Stylesheet ────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg:         #0d1117;
  --bg-2:       #161b22;
  --bg-3:       #1c2128;
  --border:     #30363d;
  --text:       #e6edf3;
  --text-muted: #8b949e;
  --blue:       #58a6ff;
  --blue-dim:   #1f6feb;
  --green:      #7ee787;
  --orange:     #f0883e;
  --red:        #f85149;
  --purple:     #a371f7;
  --radius:     12px;
  --radius-sm:  8px;
  --shadow:     0 8px 32px rgba(0,0,0,.4);
  --transition: .2s cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem 1.4rem;
  border-radius: var(--radius-sm);
  border: none;
  font-family: inherit;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--blue-dim);
  color: var(--text);
}
.btn-primary:hover { background: var(--blue); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(88,166,255,.3); }
.btn-success {
  background: #1a7f37;
  color: #fff;
}
.btn-success:hover { background: #2da44e; transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--text-muted); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none !important; }

/* ── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

/* ── Form Elements ──────────────────────────────────────── */
label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: .35rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}
input[type="text"],
input[type="number"],
input[type="email"],
select,
textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: .95rem;
  padding: .6rem .9rem;
  transition: border-color var(--transition);
  outline: none;
  appearance: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(88,166,255,.15);
}
select option { background: var(--bg-2); }

/* ── Checkbox ───────────────────────────────────────────── */
.checkbox-row {
  display: flex;
  align-items: center;
  gap: .6rem;
  cursor: pointer;
}
.checkbox-row input[type="checkbox"] {
  width: 1rem; height: 1rem;
  accent-color: var(--blue);
  cursor: pointer;
}
.checkbox-row span { font-size: .9rem; color: var(--text); }

/* ── Section Heading ────────────────────────────────────── */
.section-title {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--blue);
  margin-bottom: 1rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--border);
}

/* ── Alert Banner ───────────────────────────────────────── */
.alert {
  padding: .75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  display: flex;
  align-items: flex-start;
  gap: .6rem;
}
.alert-error { background: rgba(248,81,73,.12); border: 1px solid rgba(248,81,73,.3); color: #f85149; }
.alert-success { background: rgba(126,231,135,.1); border: 1px solid rgba(126,231,135,.25); color: var(--green); }
.alert-info { background: rgba(88,166,255,.1); border: 1px solid rgba(88,166,255,.25); color: var(--blue); }

/* ── Spinner ────────────────────────────────────────────── */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 1.1rem; height: 1.1rem;
  border: 2px solid rgba(88,166,255,.25);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  display: inline-block;
  flex-shrink: 0;
}

/* ── Scrollbar ──────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Responsive Grid ────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
@media (max-width: 640px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ── Nav ────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(13,17,23,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: .75rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}
.nav-brand .badge {
  font-size: .65rem;
  font-weight: 700;
  background: var(--blue-dim);
  color: #fff;
  padding: .15rem .45rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.nav-links { display: flex; align-items: center; gap: 1rem; }