/* Header Styles */
.header {
  background: var(--color-surface);
  border-bottom: 1.5px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(33,128,141,0.06);
  animation: slide-in-top 0.7s var(--ease-standard) both;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-16) 0;
  flex-wrap: wrap;
  gap: var(--space-16);
  max-width: 1200px;
  margin: 0 auto;
}

.logo-link {
  text-decoration: none;
  display: flex;
  align-items: center;
  transition: opacity 0.18s;
}

.logo-link:hover {
  opacity: 0.85;
}

.logo h2 {
  color: var(--color-primary);
  margin: 0;
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  gap: var(--space-8);
  cursor: pointer;
  transition: color 0.18s;
}

.logo h2:hover {
  color: var(--color-primary-hover);
}

.nav {
  display: flex;
  gap: var(--space-24);
  align-items: center;
}

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-base);
  transition: 
    color 0.18s var(--ease-standard),
    background 0.18s var(--ease-standard),
    transform 0.18s var(--ease-standard);
  position: relative;
  overflow: hidden;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-primary);
  background: var(--color-secondary);
  transform: scale(1.07);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-16);
}

.phone {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-md);
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  background: var(--color-bg-2);
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-base);
}

.phone-link {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  background: var(--color-bg-2);
  padding: var(--space-6) var(--space-14);
  border-radius: var(--radius-base);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
  text-decoration: none;
  transition: background 0.18s, color 0.18s, box-shadow 0.18s;
  box-shadow: 0 1px 4px rgba(33,128,141,0.07);
  position: relative;
}

.phone-link:hover,
.phone-link:focus {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  box-shadow: 0 2px 8px rgba(33,128,141,0.12);
}

.copy-tooltip {
  position: absolute;
  top: -28px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  padding: 2px 10px;
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  font-weight: 500;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(33,128,141,0.10);
  z-index: 10;
  pointer-events: none;
  opacity: 0.95;
  transition: opacity 0.18s;
}

.phone-icon {
  font-size: 1.2em;
}

.phone-number {
  letter-spacing: 0.01em;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-md);
}

.cart-btn {
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover));
  color: var(--color-btn-primary-text);
  border: none;
  padding: var(--space-8) var(--space-20);
  border-radius: var(--radius-base);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
  cursor: pointer;
  transition: 
    background 0.18s var(--ease-standard),
    color 0.18s var(--ease-standard),
    box-shadow 0.18s var(--ease-standard),
    transform 0.18s var(--ease-standard);
  box-shadow: 0 2px 8px rgba(33,128,141,0.07);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.cart-btn:hover {
  background: linear-gradient(90deg, var(--color-primary-hover), var(--color-primary));
  color: var(--color-btn-primary-text);
  box-shadow: 0 4px 16px rgba(33,128,141,0.12);
  transform: translateY(-2px) scale(1.045);
}

/* Hamburger (navigation drawer icon) styles */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-left: var(--space-8);
  z-index: 1201;
  transition: background 0.18s;
}
.hamburger span {
  display: block;
  width: 28px;
  height: 3px;
  background: var(--color-primary);
  margin: 4px 0;
  border-radius: 2px;
  transition: all 0.22s var(--ease-standard);
}

/* Show hamburger only on mobile */
@media (max-width: 900px) {
  .hamburger {
    display: flex;
    position: absolute;
    right: var(--space-16);
    top: 50%;
    transform: translateY(-50%);
  }
  .desktop-nav {
    display: none !important;
  }
}

/* Mobile Drawer styles */
.mobile-drawer {
  display: none;
  flex-direction: column;
  position: fixed;
  top: 0; right: 0;
  width: 80vw;
  max-width: 320px;
  height: 100vh;
  background: var(--color-surface);
  box-shadow: -2px 0 16px rgba(0,0,0,0.13);
  z-index: 1202;
  padding: var(--space-32) var(--space-24) var(--space-24) var(--space-24);
  gap: var(--space-16);
  transition: transform 0.25s var(--ease-standard);
  transform: translateX(100%);
}
.mobile-drawer.open {
  display: flex;
  transform: translateX(0);
}
.drawer-close {
  position: absolute;
  top: var(--space-16);
  right: var(--space-16);
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--color-primary);
  cursor: pointer;
  z-index: 1203;
}
.mobile-drawer .nav-link {
  font-size: var(--font-size-xl);
  padding: var(--space-12) 0;
  color: var(--color-primary);
  border-radius: var(--radius-base);
  text-align: left;
  transition: background 0.18s, color 0.18s;
}
.mobile-drawer .nav-link:hover {
  background: var(--color-secondary);
  color: var(--color-primary-hover);
}

@media (max-width: 900px) {
  .header-content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-12);
  }
  .nav {
    order: 3;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-16);
  }
  .header-actions {
    justify-content: center;
  }
}