/* Header styles for Supplynera - build on base.css */

.sp-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: #ffffff;
  border-bottom: 1px solid rgba(15, 35, 52, 0.08);
  backdrop-filter: blur(10px);
}

.sp-header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.sp-header__brand {
  display: flex;
  align-items: center;
}

.sp-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.sp-header__logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.75rem;
  background: linear-gradient(135deg, #1b4e8c, #29a0d8);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-family: "Roboto Slab", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
}

.sp-header__logo-text {
  font-family: "Roboto Slab", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  color: #0f2334;
}

/* Navigation */

.sp-header__nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.sp-header__nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
}

.sp-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  color: #304559;
  text-decoration: none;
  transition: color 0.18s ease;
}

.sp-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #1b4e8c, #29a0d8);
  transition: width 0.18s ease;
}

.sp-header__nav-link:hover,
.sp-header__nav-link:focus-visible {
  color: #1b4e8c;
}

.sp-header__nav-link:hover::after,
.sp-header__nav-link:focus-visible::after {
  width: 100%;
}

.sp-header__nav-item--accent .sp-header__nav-link {
  padding-inline: 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(27, 78, 140, 0.2);
  background: linear-gradient(135deg, rgba(27, 78, 140, 0.06), rgba(41, 160, 216, 0.08));
}

.sp-header__nav-link--accent::after {
  display: none;
}

.sp-header__nav-link--accent:hover,
.sp-header__nav-link--accent:focus-visible {
  background: linear-gradient(135deg, #1b4e8c, #29a0d8);
  color: #ffffff;
}

/* Search link */

.sp-header__search-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(15, 35, 52, 0.08);
  color: #304559;
  text-decoration: none;
  font-size: 0.9rem;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  transition: border-color 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}

.sp-header__search-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #1b4e8c;
}

.sp-header__search-link:hover,
.sp-header__search-link:focus-visible {
  border-color: rgba(27, 78, 140, 0.35);
  background-color: rgba(27, 78, 140, 0.04);
  color: #1b4e8c;
}

.sp-header__search-text {
  display: inline-block;
}

/* Mobile toggle */

.sp-header__toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(15, 35, 52, 0.12);
  background-color: #ffffff;
  padding: 0;
  margin: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.25rem;
  cursor: pointer;
}

.sp-header__toggle-bar {
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background-color: #0f2334;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.sp-header__toggle:focus-visible {
  outline: 2px solid #1b4e8c;
  outline-offset: 3px;
}

/* Toggle active state */

.sp-header--menu-open .sp-header__toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

.sp-header--menu-open .sp-header__toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Responsive layout */

@media (max-width: 768px) {
  .sp-header__inner {
    padding-block: 0.5rem;
  }

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

  .sp-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: #ffffff;
    border-bottom: 1px solid rgba(15, 35, 52, 0.08);
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 0.75rem 1.25rem 1rem;
  }

  .sp-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .sp-header__nav-link {
    width: 100%;
    padding-block: 0.55rem;
  }

  .sp-header__nav-item--accent .sp-header__nav-link {
    width: auto;
    align-self: stretch;
    text-align: center;
    margin-top: 0.5rem;
  }

  .sp-header__search-link {
    margin-top: 0.75rem;
    align-self: stretch;
    justify-content: center;
  }

  .sp-header--menu-open .sp-header__nav {
    display: flex;
  }

  .sp-header__search-text {
    display: inline-block;
  }
}

@media (max-width: 480px) {
  .sp-header__logo-text {
    font-size: 1.1rem;
  }

  .sp-header__inner {
    padding-inline: 1rem;
  }

  .sp-header__search-text {
    display: none;
  }
}

/* High contrast focus for links inside header */

.sp-header a:focus-visible {
  outline: 2px solid #29a0d8;
  outline-offset: 3px;
}