/* ── Design System Tokens ── */
:root {
  --utopia-yellow: #FFD500;
  --utopia-black: #0A0A0A;
  --utopia-white: #FFFFFF;
  --utopia-cyan: #00B4D8;
  --utopia-magenta: #D4145A;
  --utopia-acid-green: #7FB800;
  --utopia-mid-grey: #6B6B6B;
  --utopia-clinical-grey: #E8E8E8;

  --font-primary: 'Jost', sans-serif;
  --tracking-wide: 0.35em;
  --tracking-medium: 0.18em;
  --tracking-tight: 0.06em;
}

/* ── Reset ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-primary);
  background: var(--utopia-yellow);
  color: var(--utopia-black);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Navigation ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 28px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transform: translateY(0);
  transition: transform 0.35s ease, background 0.35s ease;
  background: transparent;
}
nav.nav-hidden {
  transform: translateY(-100%);
}
nav.nav-on-yellow {
  background: var(--utopia-yellow);
}
nav.nav-on-yellow .nav-logo,
nav.nav-on-yellow .nav-links a {
  color: var(--utopia-black);
}
nav.nav-on-black {
  background: var(--utopia-black);
}
nav.nav-on-black .nav-logo,
nav.nav-on-black .nav-links a {
  color: var(--utopia-white);
}
nav .nav-logo {
  font-family: var(--font-primary);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: var(--tracking-wide);
  color: var(--utopia-black);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.35s ease;
}
nav .nav-links {
  display: flex;
  gap: 40px;
}
nav .nav-links a {
  font-family: var(--font-primary);
  font-weight: 300;
  font-size: 13px;
  letter-spacing: var(--tracking-wide);
  color: var(--utopia-black);
  text-decoration: none;
  text-transform: uppercase;
  transition: opacity 0.3s ease, color 0.35s ease;
}
nav .nav-links a:hover { opacity: 0.5; }

/* ── Landing Section ── */
.landing {
  height: 100vh;
  background: var(--utopia-yellow);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
}
.landing-title {
  font-weight: 800;
  font-size: clamp(80px, 15vw, 200px);
  letter-spacing: 0.08em;
  color: var(--utopia-black);
  line-height: 0.9;
  text-transform: uppercase;
  opacity: 0;
  animation: title-in 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
}
.landing-tagline {
  font-weight: 300;
  font-size: clamp(12px, 1.6vw, 18px);
  letter-spacing: var(--tracking-wide);
  color: var(--utopia-black);
  text-transform: uppercase;
  margin-top: 24px;
  opacity: 0;
  animation: fade-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.9s forwards;
}
.landing-cta {
  position: absolute;
  bottom: 60px;
  opacity: 0;
  animation: fade-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) 1.4s forwards;
}
.landing-cta a {
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--utopia-white);
  background: var(--utopia-black);
  text-decoration: none;
  padding: 14px 48px;
  border-radius: 100px;
  transition: background 0.3s ease, color 0.3s ease;
  display: inline-block;
}
.landing-cta a:hover {
  background: var(--utopia-white);
  color: var(--utopia-black);
}

/* ── Statement Section ── */
.statement {
  background: var(--utopia-black);
  color: var(--utopia-white);
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 48px;
}
.statement-inner {
  max-width: 900px;
  width: 100%;
}
.statement-label {
  font-weight: 300;
  font-size: 12px;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--utopia-cyan);
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(20px);
}
.statement-label.visible {
  animation: fade-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.statement-text {
  font-weight: 300;
  font-size: clamp(28px, 4.5vw, 56px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  opacity: 0;
  transform: translateY(30px);
}
.statement-text.visible {
  animation: fade-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.15s forwards;
}
.statement-text em {
  font-style: normal;
  color: var(--utopia-cyan);
}

/* ── Services Section ── */
.services {
  background: var(--utopia-yellow);
  padding: 120px 48px;
}
.services-header {
  font-weight: 800;
  font-size: clamp(36px, 6vw, 72px);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--utopia-black);
  margin-bottom: 80px;
  opacity: 0;
  transform: translateY(30px);
}
.services-header.visible {
  animation: fade-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--utopia-black);
}
.service-item {
  border-bottom: 1px solid var(--utopia-black);
  border-right: 1px solid var(--utopia-black);
  padding: 48px 36px;
  opacity: 0;
  transform: translateY(20px);
  transition: background 0.4s ease;
}
.service-item:nth-child(3n) { border-right: none; }
.service-item.visible {
  animation: fade-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.service-item:hover {
  background: var(--utopia-black);
}
.service-item:hover .service-number,
.service-item:hover .service-title,
.service-item:hover .service-desc {
  color: var(--utopia-yellow);
}
.service-number {
  font-weight: 300;
  font-size: 12px;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--utopia-mid-grey);
  margin-bottom: 24px;
  transition: color 0.4s ease;
  display: block;
}
.service-title {
  font-weight: 700;
  font-size: 22px;
  letter-spacing: var(--tracking-medium);
  text-transform: uppercase;
  color: var(--utopia-black);
  margin-bottom: 16px;
  transition: color 0.4s ease;
}
.service-desc {
  font-weight: 300;
  font-size: 15px;
  line-height: 1.6;
  color: var(--utopia-black);
  transition: color 0.4s ease;
}

/* ── Contact Section ── */
.contact {
  background: var(--utopia-black);
  min-height: 100vh;
  display: flex;
  padding: 120px 48px;
}
.contact-left {
  flex: 2;
  padding-right: 80px;
}
.contact-right {
  flex: 1;
}
.contact-heading {
  font-weight: 800;
  font-size: clamp(36px, 6vw, 72px);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--utopia-yellow);
  margin-bottom: 64px;
  opacity: 0;
  transform: translateY(30px);
}
.contact-heading.visible {
  animation: fade-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.form-group {
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(20px);
}
.form-group.visible {
  animation: fade-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) var(--delay, 0s) forwards;
}
.form-group label {
  display: block;
  font-weight: 300;
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--utopia-mid-grey);
  margin-bottom: 12px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--utopia-white);
  font-family: var(--font-primary);
  font-weight: 300;
  font-size: 18px;
  padding: 12px 0;
  outline: none;
  transition: border-color 0.3s ease;
  letter-spacing: var(--tracking-tight);
}
.form-group input:focus,
.form-group textarea:focus {
  border-bottom-color: var(--utopia-yellow);
}
.form-group textarea {
  resize: none;
  height: 100px;
}
.form-submit {
  opacity: 0;
  transform: translateY(20px);
}
.form-submit.visible {
  animation: fade-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) var(--delay, 0s) forwards;
}
.form-submit button {
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--utopia-black);
  background: var(--utopia-yellow);
  border: none;
  padding: 14px 48px;
  border-radius: 100px;
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease, opacity 0.3s ease;
  position: relative;
}
.form-submit button:hover:not(:disabled) {
  background: var(--utopia-white);
  color: var(--utopia-black);
}
.form-submit button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.btn-sending { display: none; }
.form-submit button.is-sending .btn-label { display: none; }
.form-submit button.is-sending .btn-sending { display: inline; }

.form-success {
  margin-top: 24px;
  font-weight: 300;
  font-size: 13px;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  min-height: 1.5em;
  transition: color 0.3s ease;
}
.form-success.ok { color: var(--utopia-cyan); }
.form-success.err { color: var(--utopia-magenta); }

/* ── Footer ── */
footer {
  background: var(--utopia-black);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 32px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
footer span {
  font-weight: 300;
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.25);
}

/* ── Animations ── */
@keyframes title-in {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ── */
@media (max-width: 768px) {
  nav { padding: 20px 24px; }
  nav .nav-links { gap: 24px; }
  nav .nav-links a { font-size: 11px; }
  .statement { padding: 80px 24px; }
  .services { padding: 80px 24px; }
  .services-grid { grid-template-columns: 1fr; }
  .service-item { border-right: none; }
  .contact { padding: 80px 24px; flex-direction: column; }
  .contact-left { padding-right: 0; }
  .contact-right { display: none; }
  footer { padding: 24px; flex-direction: column; gap: 8px; }
}