/* ═══════════════════════════════════════
   Tech Warrior — Header CSS
   ═══════════════════════════════════════ */

body {
  padding-top: 72px; /* Fixed header offset */
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-header, 1000);
  border-bottom: 1px solid var(--glass-border);
  background: transparent; /* Background moved to pseudo-element */
  transition: all var(--transition-normal, 300ms ease);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur, 20px));
  -webkit-backdrop-filter: blur(var(--glass-blur, 20px));
  transition: all var(--transition-normal, 300ms ease);
}

.site-header.scrolled::before {
  background: var(--surface-container-high);
}
.site-header.scrolled {
  border-bottom-color: var(--tertiary, #00dbe9);
  box-shadow: var(--shadow-card);
}

.site-header__inner,
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

/* Brand / Logo */
.site-header__brand,
.site-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-header__text-logo,
.site-logo-text {
  font-family: var(--font-display, 'Montserrat', sans-serif);
  font-weight: 800;
  font-style: italic;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 22px;
  color: var(--tertiary, #00dbe9);
  text-shadow: 0 0 10px rgba(0, 219, 233, 0.3);
}

/* Navigation */
.site-navigation,
.main-nav {
  display: flex;
  align-items: center;
}

.site-navigation ul,
.main-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-sm, 8px);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-navigation a,
.main-nav a {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--on-surface-variant, #c2c7ce);
  padding: 8px 16px;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast, 150ms ease);
}

.site-navigation a:hover,
.site-navigation .current-menu-item > a,
.main-nav a:hover,
.main-nav .current-menu-item > a {
  color: var(--tertiary, #00dbe9);
  border-bottom-color: var(--tertiary, #00dbe9);
}

/* Header Actions */
.site-header__actions,
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-action-btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md, 0.375rem);
  background: var(--surface-container-high, #232b32);
  border: 1px solid var(--outline-variant, #42474d);
  color: var(--on-surface, #dbe3ee);
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast, 150ms ease);
  padding: 0;
}

.header-action-btn:hover {
  border-color: var(--tertiary, #00dbe9);
  color: var(--tertiary, #00dbe9);
  box-shadow: 0 0 10px rgba(0, 219, 233, 0.2);
}

.header-action-btn svg {
  width: 20px;
  height: 20px;
}

.cart-btn {
  position: relative;
}

.cart-badge,
.cart-count {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--tertiary, #00dbe9);
  color: var(--surface, #0c141b);
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 11px;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 8px rgba(0, 219, 233, 0.5);
}

/* Language Switcher */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  background: var(--surface-container-high, #232b32);
  border: 1px solid var(--outline-variant, #42474d);
  border-radius: var(--radius-md, 0.375rem);
  padding: 2px;
  gap: 2px;
}

.lang-btn {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: var(--radius-sm, 0.125rem);
  background: transparent;
  border: none;
  color: var(--on-surface-variant, #c2c7ce);
  cursor: pointer;
  transition: all var(--transition-fast, 150ms ease);
}

.lang-btn.is-active,
.lang-btn:hover {
  background: var(--tertiary, #00dbe9);
  color: var(--surface, #0c141b);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
}

.mobile-menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--on-surface, #dbe3ee);
  transition: all var(--transition-fast, 150ms ease);
}

/* Responsive Navigation */
@media (max-width: 991px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .site-navigation,
  .main-nav {
    position: fixed;
    top: 72px;
    right: -100%;
    width: 280px;
    height: calc(100vh - 72px);
    background: var(--surface-container, #192028);
    border-left: 1px solid var(--outline-variant, #42474d);
    padding: var(--space-lg, 24px);
    transition: right var(--transition-normal, 300ms ease);
    z-index: 1050;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
  }

  .site-navigation.is-open,
  .main-nav.is-open {
    right: 0;
  }

  .site-navigation ul,
  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: var(--space-md, 16px);
  }

  .site-navigation a,
  .main-nav a {
    width: 100%;
    font-size: 15px;
    padding: 12px 0;
    border-bottom: 1px solid var(--outline-variant, #42474d);
  }
}

/* Extreme Mobile Adjustments */
@media (max-width: 576px) {
  .site-header__text-logo, .site-logo-text {
    font-size: 15px;
  }
  .site-header__actions,
  .header-actions {
    gap: 6px;
  }
  .header-action-btn {
    width: 32px;
    height: 32px;
  }
  .header-action-btn svg {
    width: 16px;
    height: 16px;
  }
  .lang-btn {
    padding: 2px 4px;
    font-size: 10px;
  }
  .lang-switcher {
    padding: 1px;
  }
}