/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: rgba(251, 249, 254, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-md) var(--ease-out),
              box-shadow var(--duration-md) var(--ease-out);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-ink);
}

.nav__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-sm);
  box-shadow: var(--shadow-sm);
}

.nav__brand-text em {
  font-style: normal;
  color: var(--color-primary);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-size: var(--text-sm);
  font-weight: 500;
}

.nav__links a {
  position: relative;
  color: var(--color-ink-soft);
  padding-block: var(--space-2);
  transition: color var(--duration-sm) var(--ease-out);
}

.nav__links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--duration-sm) var(--ease-out);
}

.nav__links a:hover,
.nav__links a.is-active {
  color: var(--color-ink);
}

.nav__links a:hover::after,
.nav__links a.is-active::after {
  width: 100%;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav__phone {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.nav__phone svg {
  color: var(--color-primary);
}

.nav__toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
}

.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-ink);
  position: relative;
  transition: transform var(--duration-sm) var(--ease-out), opacity var(--duration-sm) var(--ease-out);
}

.nav__toggle span::before {
  position: absolute;
  top: -6px;
}

.nav__toggle span::after {
  position: absolute;
  top: 6px;
}

.site-header.is-open .nav__toggle span {
  background: transparent;
}

.site-header.is-open .nav__toggle span::before {
  top: 0;
  transform: rotate(45deg);
}

.site-header.is-open .nav__toggle span::after {
  top: 0;
  transform: rotate(-45deg);
}

@media (max-width: 860px) {
  .nav__phone {
    display: none;
  }

  .nav__toggle {
    display: inline-flex;
  }

  .nav__links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-6) var(--space-8);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform var(--duration-md) var(--ease-out),
                opacity var(--duration-md) var(--ease-out),
                visibility var(--duration-md);
  }

  .site-header.is-open .nav__links {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav__links a {
    width: 100%;
    padding-block: var(--space-3);
    border-bottom: 1px solid var(--color-border);
  }

  .nav__links .btn {
    margin-top: var(--space-4);
  }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  padding-top: calc(var(--header-height) + var(--space-24));
  padding-bottom: var(--space-24);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 640px;
  background:
    radial-gradient(560px 320px at 15% 20%, rgba(117, 37, 218, 0.14), transparent 70%),
    radial-gradient(420px 280px at 85% 0%, rgba(255, 168, 38, 0.14), transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-16);
  align-items: center;
}

.hero__content h1 {
  font-size: clamp(2.5rem, 4.4vw, var(--text-5xl));
  margin-top: var(--space-4);
}

.hero__content h1 .accent {
  color: var(--color-primary);
}

.hero__content p {
  margin-top: var(--space-6);
  font-size: var(--text-lg);
  color: var(--color-muted);
  max-width: 46ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.hero__meta {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-16);
  flex-wrap: wrap;
}

.hero__meta-item {
  border-left: 2px solid var(--color-border-strong);
  padding-left: var(--space-4);
  max-width: 200px;
}

.hero__meta-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-base);
  color: var(--color-ink);
}

.hero__meta-item span {
  font-size: var(--text-sm);
  color: var(--color-muted);
}

/* Signature element — the "Build Signal" panel */
.hero__signal {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, #241246 0%, #3a1a72 55%, var(--color-primary) 100%);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.hero__signal svg {
  width: 100%;
  height: 100%;
}

.hero__signal-label {
  position: absolute;
  left: var(--space-6);
  bottom: var(--space-6);
  right: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero__signal-label strong {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  color: #fff;
  letter-spacing: 0;
  text-transform: none;
}

.signal-path {
  fill: none;
  stroke: rgba(255, 255, 255, 0.28);
  stroke-width: 1.5;
}

.signal-path--active {
  stroke: var(--color-accent);
  stroke-width: 2;
  stroke-dasharray: 6 10;
  animation: signal-flow 6s linear infinite;
}

@keyframes signal-flow {
  to { stroke-dashoffset: -160; }
}

.signal-node {
  fill: #fff;
}

.signal-dot {
  fill: var(--color-accent);
  filter: drop-shadow(0 0 6px rgba(255, 168, 38, 0.9));
}

@media (max-width: 940px) {
  .hero__grid {
    grid-template-columns: 1fr;
  }

  .hero__signal {
    max-width: 420px;
    margin-inline: auto;
    aspect-ratio: 4 / 3;
  }
}

/* ==========================================================================
   Services
   ========================================================================== */
.services {
  background: var(--color-surface);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.service-card {
  position: relative;
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  transition: transform var(--duration-md) var(--ease-out),
              box-shadow var(--duration-md) var(--ease-out),
              border-color var(--duration-md) var(--ease-out);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.service-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.service-card__icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-primary-tint);
  color: var(--color-primary);
}

.service-card__index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-border-strong);
}

.service-card h3 {
  margin-top: var(--space-6);
  font-size: var(--text-xl);
}

.service-card p {
  margin-top: var(--space-3);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-6);
}

.service-card__tags li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.02em;
  color: var(--color-ink-soft);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

@media (max-width: 940px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .services__grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Process
   ========================================================================== */
.process {
  background: var(--color-surface-alt);
  position: relative;
}

.process__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  counter-reset: step;
}

.process__step {
  position: relative;
  padding-top: var(--space-8);
  border-top: 2px solid var(--color-border-strong);
}

.process__step::before {
  counter-increment: step;
  content: '0' counter(step);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--space-3);
}

.process__step h3 {
  font-size: var(--text-lg);
}

.process__step p {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-muted);
}

@media (max-width: 860px) {
  .process__list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .process__list {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   About / Why us
   ========================================================================== */
.about__grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-16);
  align-items: center;
}

.about__panel {
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, var(--color-ink) 0%, #34205c 100%);
  color: #fff;
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
}

.about__panel::after {
  content: '';
  position: absolute;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 168, 38, 0.35), transparent 70%);
  bottom: -80px;
  right: -80px;
}

.about__panel-kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.about__panel-quote {
  margin-top: var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1.4;
}

.about__list {
  display: grid;
  gap: var(--space-6);
}

.about__list-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.about__list-icon {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-primary-tint);
  color: var(--color-primary);
}

.about__list-item h3 {
  font-size: var(--text-base);
}

.about__list-item p {
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-muted);
}

@media (max-width: 860px) {
  .about__grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact {
  background: var(--color-surface);
}

.contact__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-8);
  align-items: stretch;
}

.contact-card {
  background: var(--color-ink);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.contact-card h3 {
  font-size: var(--text-xl);
  color: #fff;
}

.contact-card p {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--text-sm);
  margin-top: var(--space-2);
}

.contact-card__list {
  display: grid;
  gap: var(--space-5);
  margin-top: auto;
}

.contact-card__list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--text-sm);
}

.contact-card__list a:hover {
  color: var(--color-accent);
}

.contact-card__list svg {
  flex-shrink: 0;
  color: var(--color-accent);
  margin-top: 2px;
}

.contact-form {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.form-field label {
  font-size: var(--text-sm);
  font-weight: 500;
}

.form-field input,
.form-field select,
.form-field textarea {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  font-size: var(--text-sm);
  transition: border-color var(--duration-sm) var(--ease-out);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-field textarea {
  resize: vertical;
  min-height: 110px;
}

.form-field .field-error {
  font-size: var(--text-xs);
  color: #c0392b;
  min-height: 1em;
}

.contact-form .btn {
  margin-top: var(--space-6);
  width: 100%;
}

.form-status {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  display: none;
}

.form-status.is-success {
  display: block;
  background: #e7f7ee;
  color: #1f7a45;
}

.form-status.is-error {
  display: block;
  background: #fdecea;
  color: #c0392b;
}

@media (max-width: 860px) {
  .contact__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Final CTA band
   ========================================================================== */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  margin-inline: var(--space-6);
  padding: var(--space-16) var(--space-8);
  text-align: center;
}

.cta-band h2 {
  color: #fff;
  font-size: var(--text-3xl);
}

.cta-band p {
  margin-top: var(--space-3);
  color: rgba(255, 255, 255, 0.78);
  max-width: 56ch;
  margin-inline: auto;
}

.cta-band__actions {
  margin-top: var(--space-8);
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.cta-band .btn--primary {
  background: #fff;
  color: var(--color-primary-dark);
  box-shadow: none;
}

.cta-band .btn--primary:hover {
  background: var(--color-accent);
  color: var(--color-ink);
}

.cta-band .btn--ghost {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

.cta-band .btn--ghost:hover {
  border-color: #fff;
  color: #fff;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--color-ink);
  color: rgba(255, 255, 255, 0.7);
  padding-top: var(--space-24);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--space-8);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__brand .nav__brand {
  color: #fff;
}

.footer__brand p {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  max-width: 32ch;
}

.footer__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.footer__social a {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.16);
  transition: border-color var(--duration-sm) var(--ease-out), color var(--duration-sm) var(--ease-out);
}

.footer__social a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.footer__col h4 {
  color: #fff;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  margin-bottom: var(--space-4);
}

.footer__col ul {
  display: grid;
  gap: var(--space-3);
  font-size: var(--text-sm);
}

.footer__col a:hover {
  color: #fff;
}

.footer__col li {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-block: var(--space-6);
  font-size: var(--text-xs);
  flex-wrap: wrap;
  gap: var(--space-2);
}

@media (max-width: 860px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}