/* Header styles for Smart Haven */

.sh-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: linear-gradient(180deg, rgba(5, 8, 20, 0.95), rgba(5, 8, 20, 0.92) 60%, rgba(5, 8, 20, 0.88) 100%);
  border-bottom: 1px solid rgba(15, 23, 42, 0.95);
  box-shadow: 0 14px 35px rgba(2, 6, 23, 0.68);
}

.sh-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

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

.sh-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--gray-50);
}

.sh-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 30%;
  background: radial-gradient(circle at 30% 0, #7dd3fc 0, #38bdf8 14%, #2f8cff 40%, #1a63c4 70%, #020617 100%);
  box-shadow: 0 0 22px rgba(37, 99, 235, 0.8);
  position: relative;
  overflow: hidden;
}

.sh-header__logo-mark::after {
  content: "";
  position: absolute;
  inset: 22%;
  border-radius: inherit;
  border: 2px solid rgba(15, 23, 42, 0.75);
  box-shadow: 0 0 18px rgba(15, 23, 42, 0.9) inset;
}

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

.sh-header__logo-main {
  font-family: "Space Grotesk", var(--font-sans);
  font-size: var(--font-size-lg);
  letter-spacing: 0.04em;
}

.sh-header__logo-sub {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
}

/* Navigation */
.sh-header__nav {
  flex: 1 1 auto;
}

.sh-header__nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
}

.sh-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition-base), opacity var(--transition-base);
}

.sh-header__nav-link::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: -0.35rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.1), rgba(56, 189, 248, 0.85), rgba(59, 130, 246, 0.1));
  transform-origin: center;
  transform: scaleX(0);
  opacity: 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.sh-header__nav-link:hover,
.sh-header__nav-link:focus-visible {
  color: var(--gray-50);
}

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

.sh-header__nav-item--highlight .sh-header__nav-link {
  color: var(--gray-50);
}

.sh-header__nav-link--cta {
  padding-inline: 0.9rem;
  padding-block: 0.35rem;
  border-radius: var(--radius-full);
  background: radial-gradient(circle at 0 0, rgba(59, 130, 246, 0.45), transparent 60%),
    linear-gradient(135deg, rgba(37, 99, 235, 0.9), rgba(56, 189, 248, 0.95));
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.75);
  font-weight: 500;
}

.sh-header__nav-link--cta::after {
  display: none;
}

.sh-header__nav-link--cta:hover,
.sh-header__nav-link--cta:focus-visible {
  background: linear-gradient(135deg, #2f8cff, #38bdf8);
  box-shadow: 0 0 26px rgba(56, 189, 248, 0.9);
}

/* Header actions */
.sh-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.sh-header__icon-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  color: var(--color-text-muted);
  background: radial-gradient(circle at 30% 0, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.6));
  transition: border-color var(--transition-base), box-shadow var(--transition-base), color var(--transition-base), background var(--transition-base), transform var(--transition-fast);
}

.sh-header__icon-link i {
  font-size: 0.85rem;
}

.sh-header__icon-link:hover,
.sh-header__icon-link:focus-visible {
  color: var(--gray-50);
  border-color: rgba(59, 130, 246, 0.9);
  box-shadow: 0 0 18px rgba(37, 99, 235, 0.7);
  transform: translateY(-1px);
}

/* Mobile toggle */
.sh-header__toggle {
  display: none;
  position: relative;
  width: 40px;
  height: 34px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: radial-gradient(circle at 30% 0, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.6));
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), transform var(--transition-fast), opacity var(--transition-fast);
}

.sh-header__toggle:hover,
.sh-header__toggle:focus-visible {
  border-color: rgba(59, 130, 246, 0.9);
  box-shadow: 0 0 18px rgba(37, 99, 235, 0.65);
}

.sh-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 99px;
  background-color: var(--gray-200);
  transition: transform var(--transition-base), opacity var(--transition-base), background-color var(--transition-base);
}

.sh-header__toggle[aria-expanded="true"] .sh-header__toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(40deg);
}

.sh-header__toggle[aria-expanded="true"] .sh-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.sh-header__toggle[aria-expanded="true"] .sh-header__toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-40deg);
}

/* Mobile layout */
@media (max-width: 900px) {
  .sh-header__inner {
    gap: var(--space-4);
  }

  .sh-header__toggle {
    display: inline-flex;
  }

  .sh-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 60px;
    max-height: 0;
    overflow: hidden;
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.97));
    border-bottom: 1px solid rgba(30, 64, 175, 0.6);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.9);
    opacity: 0;
    transform: translateY(-8px);
    transition: max-height var(--transition-slow), opacity var(--transition-base), transform var(--transition-base);
  }

  .sh-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-6) var(--space-16) var(--space-8);
    gap: var(--space-4);
  }

  .sh-header__nav-link {
    padding-block: 0.6rem;
  }

  .sh-header__nav-link::after {
    bottom: 0;
    height: 1px;
  }

  .sh-header--menu-open .sh-header__nav {
    max-height: 320px;
    opacity: 1;
    transform: translateY(0);
  }

  .sh-header__actions {
    gap: 2px;
  }

  .sh-header__logo-sub {
    display: none;
  }
}

/* Small screens */
@media (max-width: 640px) {
  .sh-header__nav-list {
    padding-inline: var(--space-8);
  }

  .sh-header__icon-link {
    width: 32px;
    height: 32px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .sh-header__nav,
  .sh-header__toggle-bar {
    transition: none;
  }
}