/* Header styles for Smart Shop PL */

.ss-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 7, 19, 0.96), rgba(5, 7, 19, 0.85));
  border-bottom: 1px solid rgba(39, 46, 70, 0.9);
}

.ss-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

/* Brand */

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

.ss-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  text-decoration: none;
}

.ss-header__logo-link:focus-visible {
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-full);
}

.ss-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 40% 60% 58% 42% / 40% 46% 54% 60%;
  background: radial-gradient(circle at 20% 20%, #60a5fa, transparent 55%),
              radial-gradient(circle at 80% 80%, #1d4ed8, transparent 55%),
              linear-gradient(135deg, #1d4ed8, #38bdf8);
  box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.8), 0 12px 30px rgba(37, 99, 235, 0.6);
}

.ss-header__logo-text {
  font-family: "Space Grotesk", var(--font-sans);
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  font-weight: 600;
  text-transform: uppercase;
}

.ss-header__logo-text--accent {
  color: var(--color-primary);
}

/* Navigation */

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

.ss-header__nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  list-style: none;
}

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

.ss-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
}

.ss-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 0;
  height: 2px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, #38bdf8, #2563eb);
  transition: width var(--transition-base);
}

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

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

/* Header actions */

.ss-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.ss-header__icon-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(39, 46, 70, 0.9);
  background-color: rgba(11, 15, 31, 0.85);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: background-color var(--transition-base),
              border-color var(--transition-base),
              color var(--transition-base),
              transform var(--transition-fast),
              box-shadow var(--transition-base);
}

.ss-header__icon-link i {
  font-size: 0.95rem;
}

.ss-header__icon-link:hover,
.ss-header__icon-link:focus-visible {
  color: var(--color-text);
  background-color: rgba(24, 30, 51, 0.95);
  border-color: rgba(37, 99, 235, 0.8);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Mobile menu toggle */

.ss-header__menu-toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 38px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(39, 46, 70, 0.9);
  background-color: rgba(11, 15, 31, 0.88);
  align-items: center;
  justify-content: center;
  padding: 0;
}

.ss-header__menu-toggle-bar {
  width: 20px;
  height: 2px;
  border-radius: var(--radius-full);
  background-color: var(--color-text);
  transition: transform var(--transition-base),
              opacity var(--transition-fast),
              background-color var(--transition-base);
}

.ss-header__menu-toggle-bar + .ss-header__menu-toggle-bar {
  margin-top: 4px;
}

.ss-header__menu-toggle:focus-visible {
  box-shadow: var(--shadow-focus);
}

/* Open state animations */

.ss-header__menu-toggle[aria-expanded="true"] .ss-header__menu-toggle-bar:nth-child(1) {
  transform: translateY(12px) rotate(45deg);
}

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

.ss-header__menu-toggle[aria-expanded="true"] .ss-header__menu-toggle-bar:nth-child(3) {
  transform: translateY(-12px) rotate(-45deg);
}

/* Responsive */

@media (max-width: 900px) {
  .ss-header__inner {
    gap: var(--space-3);
  }

  .ss-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 60px;
    background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.18), transparent 55%),
                rgba(5, 7, 19, 0.98);
    border-bottom: 1px solid rgba(39, 46, 70, 0.9);
    transform: translateY(-130%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  }

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

  .ss-header__menu-toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .ss-header__actions {
    gap: var(--space-2);
  }

  .ss-header__nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

@media (max-width: 600px) {
  .ss-header__logo-text {
    font-size: 0.95rem;
  }

  .ss-header__icon-link {
    width: 34px;
    height: 34px;
  }
}

/* Utility when locking body scroll from JS */

.ss-header--menu-open {
  overflow: hidden;
}