:root {
  --ink: #0e1621;
  --ink-soft: #2a3744;
  --muted: #5c6b7a;
  --paper: #e8eef3;
  --paper-2: #d5dee8;
  --surface: rgba(255, 255, 255, 0.72);
  --accent: #ff5a1f;
  --accent-deep: #d4430f;
  --line: rgba(14, 22, 33, 0.12);
  --radius: 2px;
  --font-display: "Syne", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
  --space: clamp(1rem, 2vw, 1.5rem);
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  overflow-x: hidden;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 12% -10%, rgba(255, 90, 31, 0.18), transparent 55%),
    radial-gradient(700px 480px at 88% 8%, rgba(45, 90, 130, 0.16), transparent 50%),
    linear-gradient(165deg, #f3f6f9 0%, #e4ebf2 42%, #d9e3ec 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.9rem clamp(1rem, 4vw, 2.5rem);
  backdrop-filter: blur(14px);
  background: rgba(232, 238, 243, 0.78);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.04em;
  font-size: 1rem;
}

/* ONCORA = one brand name. ON may be emphasized; never split as ONC|ORA. */
.brand-wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.brand-on,
.brand-cora {
  display: inline;
  letter-spacing: 0.04em;
}

.brand-on {
  color: var(--accent-deep);
  font-weight: 800;
}

.brand-cora {
  color: var(--ink);
  font-weight: 800;
}

.nav {
  display: none;
  gap: 1.35rem;
  margin-left: 1rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.nav a:hover {
  color: var(--ink);
}

.header-actions {
  margin-left: auto;
  display: none;
  align-items: center;
  gap: 0.85rem;
}

.lang {
  display: inline-flex;
  border: 1px solid var(--line);
  background: var(--surface);
}

.lang-btn {
  border: 0;
  background: transparent;
  padding: 0.35rem 0.55rem;
  font: 600 0.75rem/1 var(--font-body);
  letter-spacing: 0.04em;
  color: var(--muted);
  cursor: pointer;
}

.lang-btn.is-active {
  background: var(--ink);
  color: #fff;
}

.menu-toggle {
  margin-left: auto;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: var(--surface);
  display: grid;
  place-content: center;
  gap: 6px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.25rem;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 0.25s ease, background 0.25s ease;
}

.btn:hover {
  background: var(--accent-deep);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.55rem 0.9rem;
  font-size: 0.85rem;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  background: rgba(14, 22, 33, 0.04);
  transform: none;
}

.hero {
  min-height: calc(100svh - 64px);
  display: grid;
  align-items: stretch;
  grid-template-columns: 1fr;
}

.hero-copy {
  padding: clamp(2.5rem, 8vw, 5.5rem) clamp(1.25rem, 5vw, 3.5rem) 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 720px;
}

.brand-lockup {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  letter-spacing: 0.015em;
  line-height: 0.95;
  color: var(--ink);
  animation: rise 0.9s ease both;
  white-space: nowrap;
}

.brand-lockup .brand-on {
  color: var(--accent-deep);
  font-weight: 800;
}

.brand-lockup .brand-cora {
  color: var(--ink);
  font-weight: 800;
}

/* Optional spaced form for tight layouts: ON CORA (still ON + CORA only) */
.brand-wordmark--spaced .brand-on::after {
  content: "\00a0";
}

.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 3.6vw, 2.35rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 16ch;
  animation: rise 0.9s ease 0.12s both;
}

.lede {
  margin: 1.15rem 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  max-width: 38ch;
  animation: rise 0.9s ease 0.22s both;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
  animation: rise 0.9s ease 0.32s both;
}

.hero-visual {
  position: relative;
  min-height: 42vh;
  overflow: hidden;
  border-top: 1px solid var(--line);
}

.spark-field {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(14, 22, 33, 0.88), rgba(20, 36, 52, 0.78)),
    url("assets/hero-grain.svg");
  background-size: cover, 180px;
}

.spark-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 55% 45%, #000 20%, transparent 72%);
  animation: drift 18s linear infinite;
}

.spark-core {
  position: absolute;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  left: 52%;
  top: 46%;
  transform: translate(-50%, -50%);
  background: var(--accent);
  box-shadow: 0 0 0 10px rgba(255, 90, 31, 0.18), 0 0 60px rgba(255, 90, 31, 0.55);
  animation: pulse 2.8s ease-in-out infinite;
}

.spark-ray {
  position: absolute;
  left: 52%;
  top: 46%;
  width: 4px;
  height: min(34vw, 180px);
  background: linear-gradient(to top, var(--accent), transparent);
  transform-origin: bottom center;
  opacity: 0.85;
  animation: spark 3.2s ease-in-out infinite;
}

.spark-ray.r1 { transform: translate(-50%, -100%) rotate(0deg); }
.spark-ray.r2 { transform: translate(-50%, -100%) rotate(72deg); animation-delay: 0.2s; }
.spark-ray.r3 { transform: translate(-50%, -100%) rotate(144deg); animation-delay: 0.4s; }
.spark-ray.r4 { transform: translate(-50%, -100%) rotate(216deg); animation-delay: 0.15s; height: min(28vw, 140px); }

.spark-orbit {
  position: absolute;
  left: 52%;
  top: 46%;
  width: min(55vw, 280px);
  height: min(55vw, 280px);
  border: 1px solid rgba(255, 90, 31, 0.35);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: spin 22s linear infinite;
}

.spark-orbit::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
  top: 8%;
  left: 50%;
}

.section {
  padding: clamp(4.5rem, 11vw, 7.5rem) clamp(1.25rem, 5vw, 3.5rem);
  max-width: var(--max);
  margin: 0 auto;
}

.section-head {
  max-width: 36rem;
  margin-bottom: clamp(2.25rem, 5vw, 3.25rem);
}

.section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.2vw, 2.75rem);
  letter-spacing: -0.03em;
  line-height: 1.08;
}

.section-head p {
  margin: 0.85rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.service-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.service {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 1.25rem;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--line);
}

.service-index {
  grid-row: span 2;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem;
  padding-top: 0.2rem;
}

.service h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.service p {
  margin: 0;
  color: var(--muted);
  max-width: 48ch;
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.steps li {
  display: grid;
  gap: 0.35rem;
  padding: 1.25rem 1.35rem;
  background: var(--surface);
  border: 1px solid var(--line);
}

.steps strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.steps span {
  color: var(--muted);
}

.region {
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.region-panel {
  margin: 0 clamp(1.25rem, 5vw, 3.5rem);
  padding: clamp(2.5rem, 6vw, 4rem);
  background: var(--ink);
  color: #f4f7fa;
}

.region-panel h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  max-width: 14ch;
  line-height: 1.1;
}

.region-panel p {
  margin: 1rem 0 0;
  color: rgba(244, 247, 250, 0.72);
  max-width: 42ch;
  font-size: 1.05rem;
}

.contact-form {
  display: grid;
  gap: 1rem;
  max-width: 36rem;
}

.contact-form label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 0.85rem 0.95rem;
  font: inherit;
  color: var(--ink);
  border-radius: var(--radius);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(255, 90, 31, 0.45);
  outline-offset: 1px;
}

.form-status {
  grid-column: 1 / -1;
  margin: 0;
  padding: 0.75rem 0.9rem;
  border: 1px solid rgba(185, 28, 28, 0.25);
  background: rgba(185, 28, 28, 0.06);
  color: #9b1c1c;
  font-size: 0.92rem;
}

.form-status[data-tone="success"] {
  border-color: rgba(15, 118, 110, 0.28);
  background: rgba(15, 118, 110, 0.08);
  color: #0f766e;
}

.contact-form label.is-invalid input,
.contact-form label.is-invalid textarea {
  border-color: rgba(185, 28, 28, 0.55);
  background: rgba(185, 28, 28, 0.03);
}

.field-error {
  display: block;
  margin-top: 0.25rem;
  color: #9b1c1c;
  font-size: 0.8rem;
}

.form-note {
  margin: 0;
  color: var(--accent-deep);
  font-weight: 600;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  padding: 2rem clamp(1.25rem, 5vw, 3.5rem) 2.5rem;
  border-top: 1px solid var(--line);
}

.footer-brand {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.footer-brand strong,
.footer-brand .brand-wordmark {
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.footer-brand p,
.footer-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.08); }
}

@keyframes spark {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}

@keyframes spin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes drift {
  from { background-position: 0 0, 0 0; }
  to { background-position: 48px 48px, 48px 48px; }
}

body.nav-open .nav,
body.nav-open .header-actions {
  display: flex;
}

body.nav-open .nav {
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  flex-direction: column;
  padding: 1rem 1.25rem 1.25rem;
  background: rgba(232, 238, 243, 0.96);
  border-bottom: 1px solid var(--line);
  margin: 0;
}

body.nav-open .header-actions {
  position: absolute;
  top: 280px;
  left: 0;
  right: 0;
  padding: 0 1.25rem 1.25rem;
  background: rgba(238, 243, 239, 0.96);
  justify-content: space-between;
}

@media (min-width: 880px) {
  .nav,
  .header-actions {
    display: flex;
  }

  .menu-toggle {
    display: none;
  }

  .hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .hero-visual {
    min-height: auto;
    border-top: 0;
    border-left: 1px solid rgba(255, 255, 255, 0.06);
  }

  .steps {
    grid-template-columns: repeat(4, 1fr);
  }

  .service {
    grid-template-columns: 3rem 1fr 1.4fr;
    align-items: baseline;
  }

  .service h3 {
    grid-column: 2;
  }

  .service p {
    grid-column: 3;
    grid-row: 1;
  }

  .service-index {
    grid-row: 1;
  }
}