/* Header */
.sv-header {
  position: sticky;
  top: 1rem;
  z-index: 50;
  padding: 0 1rem;
  margin-bottom: -4rem;
}

.sv-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: calc(var(--sv-container) + 2rem);
  margin-inline: auto;
  padding: 0.65rem 1.25rem;
  background: var(--sv-glass);
  border: 1px solid var(--sv-border);
  border-radius: var(--sv-radius-pill);
  backdrop-filter: blur(16px);
}

.sv-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--sv-text);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
}

.sv-logo__img {
  height: 32px;
  width: auto;
}

.sv-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.sv-nav__link {
  background: none;
  border: 0;
  color: var(--sv-muted);
  cursor: pointer;
  padding: 0.5rem 0.85rem;
  border-radius: var(--sv-radius-pill);
  font-size: 0.9rem;
  transition: color 0.2s, background 0.2s;
}

.sv-nav__link:hover,
.sv-nav__link:focus-visible {
  color: var(--sv-text);
  background: rgba(255, 255, 255, 0.06);
}

.sv-nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--sv-border);
  border-radius: 0.5rem;
  color: var(--sv-text);
  padding: 0.45rem 0.65rem;
  cursor: pointer;
}

/* Buttons */
.sv-btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  border-radius: var(--sv-radius-pill);
  padding: 0.85rem 1.5rem;
  font-weight: 600;
  font-size: 0.92rem;
  transition: transform 0.2s var(--sv-ease), box-shadow 0.2s;
  white-space: nowrap;
}

.sv-btn--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--sv-accent), var(--sv-accent-2));
  box-shadow: var(--sv-shadow-glow);
}

.sv-btn--primary:hover {
  transform: translateY(-2px) scale(1.02);
}

.sv-btn--ghost {
  color: var(--sv-text);
  background: var(--sv-glass);
  border: 1px solid var(--sv-border);
  backdrop-filter: blur(12px);
}

.sv-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
}

.sv-btn--sm {
  padding: 0.6rem 1.1rem;
  font-size: 0.85rem;
}

.sv-btn.link {
  background: none;
  border: 0;
  padding: 0;
  color: var(--sv-text);
  text-decoration: underline;
  text-underline-offset: 3px;
  border-radius: 0;
  font-weight: 500;
}

/* Hero */
.sv-hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 7rem 1rem 5rem;
  overflow: clip;
}

.sv-hero__planes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  perspective: 900px;
  z-index: 0;
}

.sv-hero__plane {
  position: absolute;
  left: 50%;
  top: 42%;
  width: min(520px, 80vw);
  height: 280px;
  border: 1px solid var(--sv-border);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), transparent);
  transform-origin: center;
}

.sv-hero__plane:nth-child(1) {
  transform: translate(-50%, -50%) rotateX(58deg) rotateZ(-8deg);
  opacity: 0.35;
}

.sv-hero__plane:nth-child(2) {
  transform: translate(-48%, -52%) rotateX(58deg) rotateZ(-4deg);
  opacity: 0.25;
}

.sv-hero__plane:nth-child(3) {
  transform: translate(-52%, -48%) rotateX(58deg) rotateZ(-12deg);
  opacity: 0.18;
}

.sv-hero__content {
  position: relative;
  z-index: 1;
  width: var(--sv-container);
}

.sv-hero__eyebrow {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sv-muted);
}

.sv-hero__title {
  margin: 0 0 1.25rem;
  font-size: clamp(2.4rem, 7vw, 4.25rem);
  line-height: 1.05;
  font-weight: 700;
}

.sv-hero__title-line {
  display: block;
}

.sv-hero__title-line--light {
  font-weight: 300;
}

.sv-hero__title em {
  font-style: normal;
  color: var(--sv-highlight);
}

.sv-hero__lead {
  max-width: 42rem;
  margin: 0 auto 2rem;
  color: var(--sv-muted);
  font-size: clamp(1rem, 2.5vw, 1.15rem);
}

.sv-hero__lead strong {
  color: var(--sv-text);
  font-weight: 600;
}

.sv-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 3rem;
}

.sv-scroll-hint {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  color: var(--sv-muted);
  font-size: 0.8rem;
  background: none;
  border: 0;
  cursor: pointer;
}

.sv-scroll-hint__chevron {
  width: 14px;
  height: 14px;
  border-right: 2px solid var(--sv-muted);
  border-bottom: 2px solid var(--sv-muted);
  transform: rotate(45deg);
  opacity: 0.7;
}

/* Cards */
.sv-card {
  padding: 1.5rem;
  background: var(--sv-glass);
  border: 1px solid var(--sv-border);
  border-radius: var(--sv-radius);
  backdrop-filter: blur(12px);
  transition: transform 0.25s var(--sv-ease), border-color 0.25s;
}

.sv-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 92, 255, 0.4);
}

.sv-card__title {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.sv-card__text {
  margin: 0 0 1rem;
  color: var(--sv-muted);
  font-size: 0.95rem;
}

/* Tabs */
.sv-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.sv-tabs__btn {
  background: var(--sv-glass);
  border: 1px solid var(--sv-border);
  color: var(--sv-muted);
  border-radius: var(--sv-radius-pill);
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  font-size: 0.88rem;
  transition: all 0.2s;
}

.sv-tabs__btn[aria-selected="true"] {
  color: var(--sv-text);
  border-color: var(--sv-accent);
  background: rgba(124, 92, 255, 0.15);
}

.sv-tab-panel[hidden] {
  display: none;
}

/* Case studies */
.sv-case {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 220px;
}

.sv-case__tag {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sv-highlight);
}

/* CTA band */
.sv-cta-band {
  text-align: center;
  padding: 4rem 1rem;
  margin: 2rem 0 0;
  background: linear-gradient(180deg, transparent, rgba(124, 92, 255, 0.08));
  border-top: 1px solid var(--sv-border);
}

.sv-cta-band__title {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

/* Footer */
.sv-footer {
  border-top: 1px solid var(--sv-border);
  padding: 2.5rem 1rem 3rem;
}

.sv-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2rem;
  align-items: center;
  justify-content: space-between;
}

.sv-footer__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.sv-footer__brand-mark {
  width: 28px;
  height: 28px;
}

.sv-footer__contact {
  color: var(--sv-muted);
  font-size: 0.9rem;
}

.sv-footer__contact a {
  color: var(--sv-text);
}

.sv-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

/* Modal */
.sv-modal[hidden] {
  display: none;
}

.sv-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
}

.sv-modal__panel {
  width: min(580px, 100%);
  max-height: 85vh;
  overflow: auto;
  background: var(--sv-bg-mid);
  border: 1px solid var(--sv-border);
  border-radius: var(--sv-radius);
  padding: 1.75rem;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
}

.sv-modal__title {
  margin: 0 0 0.75rem;
  font-size: 1.35rem;
}

.sv-modal__body {
  color: var(--sv-muted);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.sv-modal__body p {
  margin: 0 0 0.75rem;
}

.sv-modal__body a {
  color: var(--sv-highlight);
}

.sv-modal__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Mobile nav */
@media (max-width: 860px) {
  .sv-nav-toggle {
    display: block;
  }

  .sv-nav {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 1rem;
    right: 1rem;
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem;
    background: var(--sv-bg-mid);
    border: 1px solid var(--sv-border);
    border-radius: var(--sv-radius);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  }

  .sv-header__inner {
    position: relative;
    flex-wrap: wrap;
  }

  .sv-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .sv-nav__link {
    text-align: left;
    width: 100%;
  }

  .sv-hero__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 640px) {
  .sv-footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}