/* ============================================================
   Orubilla Corporation — Design System
   Dark, technical, restrained. Inter (body) + Space Grotesk (display).
   Neutral base with a single electric accent.
   ============================================================ */

:root {
  /* Surfaces */
  --bg:            #0A0C10;   /* page background */
  --bg-soft:       #0F1218;   /* alt section bg */
  --bg-raised:     #141922;   /* card bg */
  --bg-inset:      #0A0D12;   /* inset/mono text panels */

  /* Lines */
  --line:          rgba(255,255,255,0.08);
  --line-strong:   rgba(255,255,255,0.14);

  /* Type */
  --text:          #F2F5F9;   /* primary */
  --text-2:        #A7B0BE;   /* secondary */
  --text-3:        #69727F;   /* muted */

  /* Accent — single electric blue */
  --accent:        #4D9FFF;
  --accent-2:      #7FB8FF;   /* hover / light on dark */
  --accent-dim:    rgba(77,159,255,0.14);
  --ok:            #3DDC97;

  /* Radii / type scale */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 18px;

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body:    "Inter", system-ui, sans-serif;
  --font-mono:    ui-monospace, "SF Mono", Menlo, monospace;

  --maxw: 1200px;
}

/* ---------- Reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent-2); }
ul, ol { padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section { padding: 6rem 0; }
.section-sm { padding: 4rem 0; }
 section[data-bg="soft"] { background: var(--bg-soft); }
.section-head { max-width: 720px; margin-bottom: 3rem; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--accent);
  opacity: 0.7;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
}
.display {
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 1.02;
}
h2.h-title { font-size: clamp(1.9rem, 3.4vw, 2.75rem); margin-top: 0.85rem; }
h3.h-card  { font-size: 1.35rem; font-weight: 500; }
.section-lede {
  color: var(--text-2);
  font-size: 1.075rem;
  margin-top: 1rem;
  max-width: 60ch;
}

/* subtle grid texture on dark bg */
body {
  background-image:
    radial-gradient(1200px 600px at 80% -10%, rgba(77,159,255,0.07), transparent 60%),
    radial-gradient(900px 500px at 0% 0%, rgba(77,159,255,0.04), transparent 55%);
  background-attachment: fixed;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.8rem 1.4rem;
  border-radius: var(--r-sm);
  font-size: 0.92rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #05121F;
  font-weight: 600;
}
.btn-primary:hover { background: var(--accent-2); color: #05121F; }
.btn-ghost {
  border-color: var(--line-strong);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-2); background: var(--accent-dim); }
.btn .arrow { transition: transform 0.18s ease; }
.btn:hover .arrow { transform: translateX(3px); }
.btn-row { display: flex; gap: 0.8rem; flex-wrap: wrap; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(10,12,16,0.72);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.12rem; font-weight: 600; letter-spacing: -0.01em;
}
.brand .mark {
  width: 26px; height: 26px; border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), #2C6FE0);
  display: grid; place-items: center;
  color: #05121F; font-weight: 700; font-size: 0.95rem;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.08), 0 6px 18px rgba(77,159,255,0.25);
}
.nav-links { display: flex; align-items: center; gap: 1.9rem; }
.nav-links a:not(.nav-cta) {
  font-size: 0.9rem; color: var(--text-2); font-weight: 450;
}
.nav-links a:not(.nav-cta):hover { color: var(--text); }
.nav-cta {
  font-size: 0.86rem; font-weight: 600;
  padding: 0.55rem 1.05rem; border-radius: var(--r-sm);
  background: var(--accent); color: #05121F;
}
.nav-cta:hover { background: var(--accent-2); color: #05121F; }
.nav-toggle { display: none; background: none; border: 0; width: 40px; height: 40px; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 20px; height: 2px; background: var(--text);
  margin: 0 auto; position: relative; transition: all 0.2s ease;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after  { position: absolute; top: 6px; }

/* ---------- Sub-page hero ---------- */
.page-hero { padding: 5.5rem 0 3.5rem; }
.page-hero .display { font-size: clamp(2.2rem, 4.6vw, 3.4rem); max-width: 24ch; }
.page-hero p.lede { color: var(--text-2); font-size: 1.075rem; margin-top: 1.1rem; max-width: 62ch; }
.breadcrumb {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--text-3); margin-bottom: 1.4rem;
  display: flex; gap: 0.6rem; align-items: center;
}
.breadcrumb a { color: var(--text-3); }
.breadcrumb a:hover { color: var(--accent-2); }
.breadcrumb .sep { opacity: 0.4; }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 1.25rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 1.75rem;
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
  display: flex; flex-direction: column;
}
.card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.card .icon {
  width: 42px; height: 42px; border-radius: 10px;
  display: grid; place-items: center;
  background: var(--accent-dim);
  border: 1px solid rgba(77,159,255,0.25);
  color: var(--accent-2);
  margin-bottom: 1.1rem;
}
.card .icon svg { width: 20px; height: 20px; }
.card h3 { margin-bottom: 0.5rem; }
.card p { color: var(--text-2); font-size: 0.95rem; flex: 1; }
.card .card-link {
  margin-top: 1.2rem; font-size: 0.88rem; font-weight: 600;
  color: var(--accent-2); display: inline-flex; align-items: center; gap: 0.4rem;
}
.card .card-link:hover { gap: 0.6rem; }
.card .tag {
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--text-3); margin-bottom: 0.75rem;
}

/* ---------- Lists w/ check ---------- */
.check-list li { position: relative; padding-left: 1.9rem; margin-bottom: 0.95rem; color: var(--text-2); }
.check-list li::before {
  content: "—"; position: absolute; left: 0; color: var(--accent); font-weight: 600;
}
.check-list li strong { color: var(--text); font-weight: 600; }

/* ---------- Stat strip ---------- */
.stats {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden;
}
.stat { background: var(--bg-raised); padding: 1.6rem 1.4rem; }
.stat .n { font-family: var(--font-display); font-size: 2rem; font-weight: 500; color: var(--text); }
.stat .n .u { color: var(--accent-2); }
.stat .l { color: var(--text-3); font-size: 0.82rem; margin-top: 0.3rem; }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative; overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(600px 300px at 100% 0%, rgba(77,159,255,0.16), transparent 60%),
    var(--bg-raised);
  padding: 3.5rem;
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 2rem; align-items: center;
}
.cta-band h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
.cta-band p { color: var(--text-2); margin-top: 0.7rem; }
.cta-band .actions { justify-self: end; }

/* ---------- Form ---------- */
form[data-consultation-form] { display: block; }
.field { margin-bottom: 1.35rem; }
.field label {
  display: block; font-size: 0.82rem; font-weight: 500; color: var(--text-2);
  margin-bottom: 0.5rem; letter-spacing: 0.02em;
}
.field input,
.field select,
.field textarea {
  width: 100%; box-sizing: border-box;
  background: var(--bg-inset);
  border: 1px solid var(--line-strong); color: var(--text);
  border-radius: var(--r-sm); padding: 0.8rem 0.95rem;
  font: inherit; font-size: 0.95rem;
  transition: border-color 0.18s ease;
}
.field input::placeholder, .field textarea::placeholder { color: var(--text-3); opacity: 0.7; }
.field select {
  appearance: none; padding-right: 2.4rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%2369727F' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 0.9rem center;
}
.field select:invalid { color: var(--text-3); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim);
}
.field textarea { min-height: 130px; resize: vertical; }
form[data-consultation-form] .btn { margin-top: 0.25rem; }
.form-status { font-size: 0.88rem; padding: 0.7rem 0.9rem; border-radius: var(--r-sm); margin-top: 1rem; }
.form-status.ok  { background: rgba(61,220,151,0.12); color: var(--ok); border: 1px solid rgba(61,220,151,0.3); }
.form-status.err { background: rgba(255,99,99,0.1); color: #FF9B9B; border: 1px solid rgba(255,99,99,0.3); }

/* ---------- Hero ---------- */
.hero { padding: 7.5rem 0 5.5rem; }
.hero .display { max-width: 16ch; }
.hero p.lede { color: var(--text-2); font-size: 1.15rem; margin-top: 1.4rem; max-width: 56ch; }
.hero-hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 3rem; align-items: center; }
.mono-panel {
  border: 1px solid var(--line); border-radius: var(--r-lg);
  background: var(--bg-inset); overflow: hidden;
  font-family: var(--font-mono); font-size: 0.78rem;
}
.mono-panel .bar {
  display: flex; gap: 6px; padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--line); background: var(--bg-raised);
}
.mono-panel .bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); display: block; }
.mono-panel .bar i:first-child { background: var(--accent); }
.mono-panel pre { padding: 1.1rem 1.2rem; line-height: 1.75; color: var(--text-2); overflow: hidden; }
.mono-panel pre .k { color: var(--accent-2); }
.mono-panel pre .str { color: var(--ok); }
.mono-panel pre .dim { color: var(--text-3); }

/* ---------- Divider list / index rows ---------- */
.index-row {
  display: grid; grid-template-columns: auto 1fr auto; gap: 1.5rem; align-items: center;
  padding: 1.9rem 0; border-bottom: 1px solid var(--line);
}
.index-row:first-child { border-top: 1px solid var(--line); }
.index-row .idx { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-3); }
.index-row h3 { font-size: 1.5rem; }
.index-row .desc { color: var(--text-2); font-size: 0.95rem; margin-top: 0.35rem; max-width: 60ch; }
.index-row .go {
  width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center; border: 1px solid var(--line-strong);
  color: var(--text-2); transition: all 0.2s ease;
}
.index-row:hover .go { border-color: var(--accent); color: var(--accent-2); background: var(--accent-dim); }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-q {
  width: 100%; background: none; border: 0; text-align: left;
  padding: 1.4rem 3rem 1.4rem 0; color: var(--text);
  font-family: var(--font-display); font-size: 1.12rem; position: relative;
}
.faq-q::after {
  content: "+"; position: absolute; right: 0.4rem; top: 50%; transform: translateY(-50%);
  color: var(--accent-2); font-size: 1.3rem; transition: transform 0.2s ease;
}
.faq-item.open .faq-q::after { transform: translateY(-50%) rotate(45deg); }
.faq-a { display: none; padding: 0 0 1.5rem; color: var(--text-2); max-width: 75ch; }
.faq-item.open .faq-a { display: block; }

/* ---------- Index rows (divisions list) ---------- */
.index-row {
  display: grid; grid-template-columns: 84px 1fr 44px; gap: 1.75rem; align-items: center;
  padding: 2.1rem 0; border-bottom: 1px solid var(--line); color: inherit;
  transition: background 0.18s ease;
}
a.index-row:hover { background: var(--bg-soft); }
.index-row .idx { font-family: var(--font-mono); font-size: 0.85rem; color: var(--accent-2); }
.index-row .idx small { display: block; color: var(--text-3); font-size: 0.68rem; letter-spacing: 0.12em; margin-top: 0.3rem; }
.index-row h3 { font-size: 1.6rem; font-weight: 500; }
.index-row .desc { color: var(--text-2); font-size: 0.95rem; margin-top: 0.4rem; max-width: 64ch; }
.index-row .go {
  width: 44px; height: 44px; border-radius: 50%; justify-self: end;
  display: grid; place-items: center; border: 1px solid var(--line-strong);
  color: var(--text-2); transition: all 0.2s ease;
}
a.index-row:hover .go { border-color: var(--accent); background: var(--accent-dim); color: var(--accent-2); }

/* ---------- Spec / key-value list ---------- */
.kv { border-top: 1px solid var(--line); }
.kv-row {
  display: grid; grid-template-columns: 200px 1fr; gap: 1.5rem;
  padding: 1.1rem 0; border-bottom: 1px solid var(--line);
}
.kv-row dt { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3); }
.kv-row dd { color: var(--text-2); font-size: 0.95rem; }
.kv-row dd strong { color: var(--text); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 3.5rem 0 2.5rem; background: var(--bg-soft); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 2.5rem; }
.footer h4 { font-size: 0.8rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-3); margin-bottom: 1rem; }
.footer a { color: var(--text-2); font-size: 0.9rem; display: block; padding: 0.25rem 0; }
.footer a:hover { color: var(--accent-2); }
.footer .f-brand p { color: var(--text-2); font-size: 0.9rem; margin-top: 0.9rem; max-width: 38ch; }
.footer-bottom {
  margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  color: var(--text-3); font-size: 0.82rem;
}

/* ---------- Breadcrumb / small page hero ---------- */
.page-hero { padding: 5.5rem 0 3rem; }
.page-hero .display { font-size: clamp(2.2rem, 5vw, 3.6rem); max-width: 22ch; }
.page-hero p.lede { color: var(--text-2); font-size: 1.1rem; margin-top: 1.2rem; max-width: 62ch; }
.bread { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-3); letter-spacing: 0.08em; margin-bottom: 1.4rem; }
.bread a { color: var(--text-3); }
.bread a:hover { color: var(--accent-2); }

/* ---------- Blog cards ---------- */
.post-card {
  background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 1.75rem; display: block; transition: border-color 0.2s ease, transform 0.2s ease;
}
.post-card:hover { border-color: var(--line-strong); transform: translateY(-2px); color: var(--text); }
.post-card .meta { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-3); letter-spacing: 0.06em; }
.post-card h3 { font-size: 1.3rem; margin: 0.6rem 0; }
.post-card p { color: var(--text-2); font-size: 0.95rem; }
.empty-note {
  border: 1px dashed var(--line-strong); border-radius: var(--r-md);
  padding: 3rem; text-align: center; color: var(--text-3);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .cta-band { grid-template-columns: 1fr; padding: 2.5rem; }
  .cta-band .actions { justify-self: start; }
  .hero-hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .kv-row { grid-template-columns: 1fr; gap: 0.4rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .section { padding: 4rem 0; }
  .page-hero { padding: 4rem 0 2.5rem; }
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0.2rem;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 0.9rem 1.5rem 1.4rem; z-index: 40;
  }
  .nav-links.open { display: flex; }
  .nav-links.open a:not(.nav-cta) { padding: 0.8rem 0; border-bottom: 1px solid var(--line); }
  .nav-links.open .nav-cta { margin-top: 0.6rem; }
  .index-row { grid-template-columns: 1fr; gap: 0.6rem; text-align: left; }
  .index-row .idx { margin-bottom: 0.2rem; }
  .index-row .go { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; }
  .cta-band { padding: 2rem; }
}