/* ========== HEADER STYLES ========== */

.header {
  background: var(--clr-surface);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  transition: var(--transition);
  border-bottom: 1px solid var(--clr-border-light);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space) 0;
  min-height: var(--header-height);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
  color: var(--clr-primary);
  text-decoration: none;
  transition: var(--transition);
  flex-shrink: 0;
}

.logo:hover {
  color: var(--clr-primary-dark);
  transform: translateY(-1px);
}

.logo__icon {
  font-size: var(--font-size-2xl);
  transition: var(--transition);
}

.logo:hover .logo__icon {
  transform: scale(1.1);
}

.logo__text {
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.025em;
}

.admin-badge {
  background: var(--clr-error);
  color: white;
  font-size: var(--font-size-xs);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  margin-left: var(--space-xs);
  font-weight: var(--font-weight-bold);
}

/* Navigation */
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: 0 auto;
}

.nav__link {
  color: var(--clr-text-light);
  font-weight: var(--font-weight-medium);
  padding: var(--space-sm) var(--space);
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
  text-decoration: none;
  white-space: nowrap;
}

.nav__link:hover,
.nav__link:focus {
  color: var(--clr-primary);
  background: var(--clr-border-light);
  transform: translateY(-1px);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--clr-primary);
  transition: var(--transition);
  transform: translateX(-50%);
}

.nav__link:hover::after {
  width: 80%;
}

/* Header Actions */
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space);
  flex-shrink: 0;
}

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

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--clr-text-light);
  font-weight: var(--font-weight-medium);
  padding: var(--space-sm);
  border-radius: var(--radius);
  transition: var(--transition);
  text-decoration: none;
  font-size: var(--font-size-sm);
}

.contact-link:hover {
  color: var(--clr-primary);
  background: var(--clr-border-light);
}

/* Mobile Menu (для будущей реализации) */
.mobile-menu__button {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  padding: var(--space-sm);
  cursor: pointer;
}

.mobile-menu__line {
  width: 20px;
  height: 2px;
  background: var(--clr-text);
  transition: var(--transition);
}

.mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--clr-surface);
  box-shadow: var(--shadow-lg);
  padding: var(--space);
  transform: translateY(-100%);
  opacity: 0;
  transition: var(--transition-slow);
  z-index: var(--z-dropdown);
}

.mobile-menu--open {
  transform: translateY(0);
  opacity: 1;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.mobile-menu__link {
  padding: var(--space) var(--space-lg);
  color: var(--clr-text);
  text-decoration: none;
  border-radius: var(--radius);
  transition: var(--transition);
  font-weight: var(--font-weight-medium);
}

.mobile-menu__link:hover {
  background: var(--clr-border-light);
  color: var(--clr-primary);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .header__inner {
    flex-wrap: wrap;
  }
  
  .nav {
    order: 3;
    width: 100%;
    justify-content: center;
    margin-top: var(--space);
  }
}

@media (max-width: 768px) {
  .header__inner {
    padding: var(--space-sm) 0;
  }
  
  .logo {
    font-size: var(--font-size-lg);
  }
  
  .logo__icon {
    font-size: var(--font-size-xl);
  }
  
  .nav {
    display: none;
  }
  
  .mobile-menu__button {
    display: flex;
  }
  
  .header__actions {
    gap: var(--space-sm);
  }
  
  .header__actions .btn {
    padding: var(--space-sm) var(--space);
    font-size: var(--font-size-sm);
  }
  
  .header__actions .btn__text {
    display: none;
  }
  
  .header__actions .btn__icon {
    margin: 0;
  }
}

@media (max-width: 480px) {
  .header__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space);
  }
  
  .logo {
    align-self: flex-start;
  }
  
  .header__actions {
    width: 100%;
    justify-content: space-between;
  }
  
  .header__actions .btn {
    flex: 1;
    justify-content: center;
  }
  
  .header__actions .btn__text {
    display: inline;
  }
}

/* Admin Panel */
.admin-panel {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: var(--space-sm) 0;
  position: relative;
  z-index: var(--z-fixed);
}

.admin-panel__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space);
}

.admin-panel__title {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.admin-panel__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.admin-panel__close {
  background: none;
  border: none;
  color: white;
  font-size: var(--font-size-lg);
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius);
  transition: var(--transition);
}

.admin-panel__close:hover {
  background: rgba(255, 255, 255, 0.1);
}