/* Techsylvo Header Styles */

.ts-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(6, 7, 9, 0.96), rgba(6, 7, 9, 0.86));
  border-bottom: 1px solid var(--color-border-subtle);
}

.ts-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-12);
  padding-block: var(--space-8);
}

/* Brand */

.ts-header__brand {
  flex: 0 0 auto;
}

.ts-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: var(--font-size-sm);
}

.ts-header__logo-link::after {
  content: none;
}

.ts-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 40%;
  background: conic-gradient(from 180deg, var(--color-primary), var(--color-accent-teal), var(--color-primary));
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 10px 25px rgba(0, 0, 0, 0.7);
  position: relative;
  overflow: hidden;
}

.ts-header__logo-mark::after {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: inherit;
  background: radial-gradient(circle at 20% 0%, rgba(255, 255, 255, 0.45), transparent 55%),
    radial-gradient(circle at 80% 110%, rgba(6, 7, 9, 0.96), rgba(6, 7, 9, 1));
}

.ts-header__logo-text {
  font-family: "Space Grotesk", var(--font-sans);
}

/* Navigation */

.ts-header__nav {
  flex: 1 1 auto;
}

.ts-header__nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-12);
  list-style: none;
  padding: 0;
  margin: 0;
}

.ts-header__nav-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding-block: 0.25rem;
}

.ts-header__nav-link--active,
.ts-header__nav-link[aria-current="page"] {
  color: var(--gray-50);
  font-weight: 500;
}

/* Actions */

.ts-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex: 0 0 auto;
}

.ts-header__icon-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background: rgba(0, 0, 0, 0.2);
  color: var(--gray-200);
  font-size: 0.9rem;
  transition: background-color var(--transition-md), border-color var(--transition-md), color var(--transition-md), transform var(--transition-fast), box-shadow var(--transition-md);
}

.ts-header__icon-link::after {
  content: none;
}

.ts-header__icon-link:hover,
.ts-header__icon-link:focus-visible {
  color: var(--gray-50);
  border-color: rgba(30, 123, 255, 0.7);
  background: radial-gradient(circle at top, rgba(30, 123, 255, 0.16), transparent 55%);
  box-shadow: 0 0 0 1px rgba(30, 123, 255, 0.4);
  transform: translateY(-1px);
}

/* Mobile menu toggle */

.ts-header__menu-toggle {
  display: none;
  align-items: center;
  gap: var(--space-4);
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background: rgba(8, 10, 16, 0.85);
  color: var(--gray-100);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.ts-header__menu-toggle::after {
  content: none;
}

.ts-header__menu-toggle-icon {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}

.ts-header__menu-line {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-200);
  transition: transform var(--transition-fast), opacity var(--transition-fast), translate var(--transition-fast);
}

.ts-header__menu-toggle[aria-expanded="true"] .ts-header__menu-line:first-child {
  transform: rotate(40deg) translateY(3px);
}

.ts-header__menu-toggle[aria-expanded="true"] .ts-header__menu-line:last-child {
  transform: rotate(-40deg) translateY(-3px);
}

.ts-header__menu-toggle-label {
  font-size: inherit;
}

/* Mobile layout */

@media (max-width: 768px) {
  .ts-header__inner {
    padding-block: var(--space-6);
  }

  .ts-header__menu-toggle {
    display: inline-flex;
  }

  .ts-header__nav {
    position: fixed;
    inset: 56px 0 auto 0;
    max-height: 0;
    overflow: hidden;
    background: radial-gradient(circle at top, rgba(30, 123, 255, 0.18), transparent 60%),
      radial-gradient(circle at bottom, rgba(47, 208, 197, 0.16), transparent 60%),
      rgba(5, 6, 10, 0.98);
    border-bottom: 1px solid var(--color-border-subtle);
    transition: max-height var(--transition-slow);
  }

  .ts-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-12) var(--space-16);
    gap: var(--space-8);
  }

  .ts-header__nav-link {
    width: 100%;
    padding-block: 0.35rem;
  }

  .ts-header__nav--open {
    max-height: 320px;
  }
}

/* Medium screens */

@media (min-width: 769px) and (max-width: 1024px) {
  .ts-header__nav-list {
    gap: var(--space-8);
  }
}

/* Large screens */

@media (min-width: 1025px) {
  .ts-header__nav {
    display: block;
  }
}