/* ============================================
   NAVIGATION
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
}

.site-header--scrolled {
  box-shadow: var(--shadow-md);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.site-header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-header__logo img {
  width: 55px;
  height: 55px;
}

/* Hamburger toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 101;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--color-text-white);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Main navigation */
.main-nav {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.main-nav--open {
  display: block;
}

.main-nav__list {
  display: flex;
  flex-direction: column;
}

.main-nav__link {
  display: block;
  padding: var(--space-md) var(--container-padding);
  color: var(--color-text-white);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--font-size-base);
  letter-spacing: 0.02em;
  transition: background-color var(--transition-fast);
}

.main-nav__link:hover,
.main-nav__link:focus {
  color: var(--color-text-white);
  background-color: var(--color-primary-dark);
}

.main-nav__link--active {
  border-left: 3px solid var(--color-accent);
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .main-nav {
    display: block;
    position: static;
    box-shadow: none;
  }

  .main-nav__list {
    flex-direction: row;
    gap: 0;
  }

  .main-nav__link {
    padding: var(--space-sm) var(--space-lg);
    border-bottom: 3px solid transparent;
  }

  .main-nav__link:hover,
  .main-nav__link:focus {
    background-color: transparent;
    border-bottom-color: var(--color-accent);
  }

  .main-nav__link--active {
    border-left: none;
    border-bottom: 3px solid var(--color-accent);
  }
}

/* Prevent body scroll when mobile nav is open */
body.nav-open {
  overflow: hidden;
}

@media (min-width: 768px) {
  body.nav-open {
    overflow: auto;
  }
}

/* ============================================
   HERO SLIDESHOW
   ============================================ */
.hero {
  position: relative;
  width: 100%;
  height: 50vh;
  min-height: 300px;
  max-height: 600px;
  overflow: hidden;
  background-color: var(--color-primary);
}

.hero__slides {
  position: relative;
  width: 100%;
  height: 100%;
}

.hero__slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1s ease;
}

.hero__slide--active {
  opacity: 1;
}

.hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to bottom, rgba(0,0,0,0.1), rgba(0,0,0,0.5));
  text-align: center;
  padding: var(--space-xl);
}

.hero__title {
  color: var(--color-text-white);
  font-size: var(--font-size-base);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
  max-width: 700px;
  margin-bottom: var(--space-sm);
}

.hero__subtitle {
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--font-size-3xl);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
  margin-bottom: var(--space-sm);
}

.hero__dots {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-sm);
  z-index: 10;
}

.hero__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background-color var(--transition-fast);
}

.hero__dot--active {
  background-color: var(--color-text-white);
}

@media (min-width: 768px) {
  .hero {
    height: 60vh;
  }

  .hero__subtitle {
    font-size: 3.5rem;
  }

  .hero__title {
    font-size: var(--font-size-base);
  }
}

@media (min-width: 960px) {
  .hero {
    height: 70vh;
    max-height: 700px;
  }

  .hero__subtitle {
    font-size: 4.5rem;
  }

  .hero__title {
    font-size: var(--font-size-lg);
  }
}

/* ============================================
   PAGE HEADER (interior pages)
   ============================================ */
.page-header {
  position: relative;
  background-color: var(--color-primary);
  color: var(--color-text-white);
  padding: var(--space-3xl) 0;
  text-align: center;
  overflow: hidden;
}

.page-header__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-header .container {
  position: relative;
  z-index: 1;
}

.page-header__subtitle {
  font-size: var(--font-size-lg);
  opacity: 0.85;
  margin-bottom: var(--space-xs);
}

.page-header__title {
  color: var(--color-text-white);
  font-size: var(--font-size-2xl);
  margin: 0;
}

@media (min-width: 768px) {
  .page-header {
    padding: var(--space-section) 0;
  }

  .page-header__title {
    font-size: var(--font-size-3xl);
  }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-align: center;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  letter-spacing: 0.02em;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-text-white);
}

.btn--primary:hover,
.btn--primary:focus {
  background-color: var(--color-accent-hover);
  color: var(--color-text-white);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn--outline:hover,
.btn--outline:focus {
  background-color: var(--color-accent);
  color: var(--color-text-white);
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: var(--font-size-lg);
}

/* ============================================
   CARDS (manufacturer sections)
   ============================================ */
.card {
  background-color: var(--color-bg-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-2xl);
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card__logo {
  max-height: 80px;
  width: auto;
  margin-bottom: var(--space-lg);
}

.card__title {
  margin-bottom: var(--space-md);
}

.card__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.card__text {
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

/* ============================================
   FORMS
   ============================================ */
.form {
  max-width: 640px;
}

.form--wide {
  max-width: 100%;
}

.form__fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.form__fieldset legend {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  padding: 0 var(--space-sm);
}

.form__group {
  margin-bottom: var(--space-lg);
}

.form__label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.form__required {
  color: var(--color-error);
}

.form__input,
.form__textarea,
.form__select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-input-border);
  border-radius: var(--border-radius);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  border-color: var(--color-input-focus);
  box-shadow: 0 0 0 3px rgba(0, 104, 55, 0.15);
  outline: none;
}

.form__input:invalid:not(:placeholder-shown),
.form__textarea:invalid:not(:placeholder-shown) {
  border-color: var(--color-error);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

.form__row {
  display: grid;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.form__row--2col {
  grid-template-columns: 1fr;
}

.form__row--3col {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .form__row--2col {
    grid-template-columns: 1fr 1fr;
  }

  .form__row--3col {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.form__row .form__group {
  margin-bottom: 0;
}

/* Checkbox & Radio groups */
.form__checkbox-group,
.form__radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-xl);
}

.form__checkbox-group--grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

@media (min-width: 768px) {
  .form__checkbox-group--grid {
    grid-template-columns: 1fr 1fr;
  }
}

.form__check-label,
.form__radio-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
}

.form__check-label input,
.form__radio-label input {
  accent-color: var(--color-input-focus);
  width: 18px;
  height: 18px;
  cursor: pointer;
}

/* Status messages */
.form__status {
  padding: var(--space-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-lg);
  display: none;
}

.form__status--visible {
  display: block;
}

.form__status--sending {
  background-color: #f0f0f0;
  color: var(--color-text-light);
}

.form__status--success {
  background-color: #e8f5e9;
  color: #2e7d32;
}

.form__status--error {
  background-color: #ffebee;
  color: var(--color-error);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background-color: var(--color-footer-bg);
  color: var(--color-text-white);
  padding: var(--space-3xl) 0 var(--space-xl);
  text-align: center;
}

.site-footer__tagline {
  font-size: var(--font-size-sm);
  opacity: 0.8;
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.site-footer__logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl) var(--space-2xl);
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.site-footer__logos a {
  transition: opacity var(--transition-fast);
}

.site-footer__logos a:hover {
  opacity: 0.8;
}

.site-footer__logos img {
  max-height: 50px;
  width: auto;
}

.site-footer__info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.site-footer__logo-link img {
  width: 70px;
  height: 70px;
}

.site-footer__address {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  opacity: 0.85;
}

.site-footer__address a {
  color: var(--color-text-white);
}

.site-footer__address a:hover {
  color: var(--color-accent);
}