/* Header styles for Scena Vector */

.sv-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(5, 6, 10, 0.92), rgba(5, 6, 10, 0.78));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sv-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

/* Brand */
.sv-header__brand {
  display: flex;
  align-items: center;
}

.sv-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.sv-header__logo-mark {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.22), transparent 55%),
              radial-gradient(circle at 70% 80%, rgba(30, 164, 255, 0.5), transparent 60%),
              #05060a;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12), var(--shadow-accent-blue);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.sv-header__logo-core {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  box-shadow: 0 0 18px rgba(224, 36, 59, 0.7);
}

.sv-header__logo-blade {
  position: absolute;
  width: 3px;
  height: 80%;
  border-radius: 999px;
  background: linear-gradient(to bottom, #ffffff, rgba(255, 255, 255, 0));
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.7);
}

.sv-header__logo-blade--left {
  left: 7px;
  transform: rotate(-18deg);
}

.sv-header__logo-blade--right {
  right: 7px;
  transform: rotate(18deg);
}

.sv-header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.sv-header__logo-title {
  font-family: var(--font-display);
  letter-spacing: 0.18em;
  font-size: 0.9rem;
  text-transform: uppercase;
}

.sv-header__logo-subtitle {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}

/* Navigation */
.sv-header__nav {
  display: flex;
  align-items: center;
}

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

.sv-header__nav-item {
  position: relative;
}

.sv-header__nav-link {
  position: relative;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
  padding: 0.4rem 0;
}

.sv-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-normal);
}

.sv-header__nav-link:hover,
.sv-header__nav-link:focus-visible {
  color: var(--color-text);
}

.sv-header__nav-link:hover::after,
.sv-header__nav-link:focus-visible::after {
  transform: scaleX(1);
}

.sv-header__nav-item--cta {
  margin-left: var(--space-4);
}

.sv-header__cta {
  white-space: nowrap;
}

.sv-header__cta-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.sv-header__cta-icon i {
  font-size: 1rem;
}

/* Mobile toggle */
.sv-header__toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: radial-gradient(circle at top, rgba(255, 255, 255, 0.1), transparent 55%), rgba(5, 6, 10, 0.9);
  padding: 0;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
}

.sv-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: #ffffff;
  transition: transform var(--transition-normal), opacity var(--transition-normal), width var(--transition-normal);
}

.sv-header__toggle:focus-visible {
  outline: none;
}

/* Hamburger to X animation */
.sv-header--menu-open .sv-header__toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.sv-header--menu-open .sv-header__toggle-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}

.sv-header--menu-open .sv-header__toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

/* Mobile layout */
@media (max-width: 768px) {
  .sv-header__inner {
    min-height: 60px;
  }

  .sv-header__toggle {
    display: flex;
    flex-direction: column;
  }

  .sv-header__nav {
    position: fixed;
    inset: 60px 0 auto 0;
    background: radial-gradient(circle at top, rgba(224, 36, 59, 0.3), transparent 55%),
                radial-gradient(circle at bottom, rgba(30, 164, 255, 0.22), transparent 65%),
                rgba(5, 6, 10, 0.97);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }

  .sv-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--container-padding-x) var(--space-4);
    gap: var(--space-3);
  }

  .sv-header__nav-item--cta {
    width: 100%;
    margin-left: 0;
    margin-top: var(--space-2);
  }

  .sv-header__nav-item--cta .sv-header__cta {
    width: 100%;
    justify-content: center;
  }

  .sv-header--menu-open .sv-header__nav {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
}

@media (max-width: 480px) {
  .sv-header__logo-text {
    display: none;
  }
}

/* Utility state for no-JS (nav visible by default) */
.no-js .sv-header__nav {
  position: static;
  transform: none;
  opacity: 1;
  pointer-events: auto;
  background: transparent;
  border-bottom: none;
}

.no-js .sv-header__toggle {
  display: none;
}