/* ============================================
   Ball Transfer Systems - Main Stylesheet
   ============================================ */

/* Import design system */
@import url('design-system.css');

/* Import animations */
@import url('animations.css');

/* Import premium polish */
@import url('premium.css');

/* Google Fonts - Inter */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ----------------------------------------
   Header & Navigation
   ---------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.site-logo {
  display: flex;
  align-items: center;
}

.site-logo img {
  height: 48px;
  width: auto;
}

/* Main Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-link--active {
  color: var(--color-white);
}

.nav-link--cta {
  background-color: var(--color-accent);
  color: var(--color-white);
  font-weight: var(--font-weight-semibold);
}

.nav-link--cta:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-white);
}

/* Dropdown Menu */
.nav-dropdown {
  position: static;
}

.nav-dropdown__toggle {
  cursor: pointer;
}

.nav-dropdown__toggle::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: var(--space-1);
  vertical-align: middle;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover .nav-dropdown__toggle::after {
  transform: rotate(180deg);
}

.nav-dropdown__menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  padding: var(--space-2);
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
}

.nav-dropdown:hover .nav-dropdown__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition-delay: 0s;
}

/* Inner pages use .nav-dropdown__menu (home page uses the full-width .mega-menu,
   which needs .nav-dropdown to stay static). Anchor this menu directly beneath the
   "Products" toggle so it no longer jumps to the far left, and add a grace delay
   before it closes so the user has time to reach it. */
.nav-dropdown:has(.nav-dropdown__menu) {
  position: relative;
}

.nav-dropdown__menu {
  transition-delay: 0.3s;
}

.nav-dropdown__link {
  display: block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-dropdown__link:hover {
  background-color: var(--color-gray-50);
  color: var(--color-primary);
}

/* Mobile Navigation Toggle */
.mobile-nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: var(--space-2);
  cursor: pointer;
}

.mobile-nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px auto;
  background-color: var(--color-white);
  transition: all var(--transition-fast);
}

.mobile-nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 1024px) {
  .site-header__inner {
    height: var(--header-height-mobile);
    padding: 0 var(--space-4);
  }

  .site-logo img {
    height: 40px;
  }

  .mobile-nav-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height-mobile);
    left: 0;
    right: 0;
    height: calc(100vh - var(--header-height-mobile));
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4);
    background-color: var(--color-white);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    z-index: 9999;
  }

  .main-nav.active {
    transform: translateX(0);
  }

  .nav-link {
    padding: var(--space-4);
    font-size: var(--font-size-base);
    color: var(--color-text);
    border-bottom: 1px solid var(--color-gray-100);
    border-radius: 0;
  }

  .nav-link:hover {
    color: var(--color-primary);
    background-color: var(--color-gray-50);
  }

  .nav-link--cta {
    color: var(--color-white);
  }

  .nav-dropdown__menu {
    position: static;
    min-width: 100%;
    padding: 0 0 0 var(--space-4);
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
  }

  .nav-dropdown.active .nav-dropdown__menu {
    max-height: 500px;
  }
}

/* ----------------------------------------
   Hero Section
   ---------------------------------------- */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  background-color: var(--color-primary);
  overflow: hidden;
}

.hero__background {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-slider .hero-slider__slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  opacity: 0;
  transition: opacity 2s ease-in-out;
  will-change: opacity;
}

.hero-slider .hero-slider__slide--active {
  opacity: 0.7;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.6) 0%,
    rgba(0, 0, 0, 0.4) 50%,
    rgba(0, 0, 0, 0.15) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  padding: var(--space-16) 0;
}

.hero__overline {
  display: block;
  margin-bottom: var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  color: var(--color-accent);
}

.hero__title {
  font-size: 4.5rem;
  line-height: 1.05;
  color: var(--color-white);
  margin-bottom: var(--space-6);
}

.hero__title span {
  color: var(--color-accent);
}

.hero__text {
  font-size: var(--font-size-xl);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-8);
  line-height: var(--line-height-relaxed);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

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

  .hero__content {
    padding: var(--space-12) 0;
  }

  .hero__title {
    font-size: 2.75rem;
  }

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

/* ----------------------------------------
   Page Header (Inner Pages)
   ---------------------------------------- */
.page-header {
  padding: var(--space-16) 0;
  background-color: var(--color-primary);
  text-align: center;
}

.page-header__title {
  font-size: var(--font-size-4xl);
  color: var(--color-white);
  margin-bottom: 0;
}

.page-header__subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  margin-top: var(--space-2);
}

@media (max-width: 768px) {
  .page-header {
    padding: var(--space-10) 0;
  }

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

/* ----------------------------------------
   Products Grid
   ---------------------------------------- */
.products-section {
  background-color: var(--color-gray-50);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

@media (max-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
}

@media (max-width: 480px) {
  .products-grid {
    grid-template-columns: 1fr;
  }
}

/* ----------------------------------------
   Features Section
   ---------------------------------------- */
.features-section {
  background-color: var(--color-white);
}

.feature-card {
  text-align: center;
  padding: var(--space-8);
}

.feature-card__icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-6);
  padding: var(--space-4);
  background-color: var(--color-gray-50);
  border-radius: var(--radius-xl);
}

.feature-card__icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.feature-card__title {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.feature-card__text {
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* ----------------------------------------
   Content Sections
   ---------------------------------------- */
.content-section {
  padding: var(--space-16) 0;
}

.content-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.content-row--reverse {
  direction: rtl;
}

.content-row--reverse > * {
  direction: ltr;
}

.content-row__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.content-row__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.content-row__body h3 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.content-row__body h2 {
  font-size: var(--font-size-3xl);
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}

.content-row__body p {
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

@media (max-width: 768px) {
  .content-row {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .content-row--reverse {
    direction: ltr;
  }
}

/* ----------------------------------------
   Callout Box
   ---------------------------------------- */
.callout {
  padding: var(--space-8);
  background-color: var(--color-primary);
  border-radius: var(--radius-lg);
  color: var(--color-white);
}

.callout p {
  font-size: var(--font-size-xl);
  font-style: italic;
  line-height: var(--line-height-relaxed);
  margin: 0;
}

/* ----------------------------------------
   Product Page
   ---------------------------------------- */
.product-detail {
  padding: var(--space-12) 0;
}

.product-block {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-border);
}

.product-block:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.product-block__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-gray-100);
}

.product-block__image img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
}

.product-block__body h4 {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.product-block__body p {
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

.product-block__body .btn {
  margin-bottom: var(--space-6);
}

@media (max-width: 900px) {
  .product-block {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* ----------------------------------------
   Contact Form Layout
   ---------------------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.contact-info h3 {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}

.contact-info__item {
  margin-bottom: var(--space-6);
}

.contact-info__label {
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-800);
  margin-bottom: var(--space-1);
}

.contact-info__value {
  color: var(--color-text-muted);
}

.contact-info__value a {
  color: var(--color-primary);
  text-decoration: underline;
}

.contact-info__value a:hover {
  color: var(--color-accent);
}

.contact-map {
  margin-top: var(--space-8);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/10;
}

.contact-map iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.contact-form-wrapper {
  background-color: var(--color-gray-50);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
}

@media (max-width: 768px) {
  .contact-layout {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
}

/* ----------------------------------------
   Footer
   ---------------------------------------- */
.site-footer {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  padding: var(--space-12) 0 var(--space-6);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-10);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  max-width: 400px;
  margin-top: var(--space-4);
  margin-bottom: var(--space-6);
}

.footer-contact {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-6);
}

.footer-contact strong {
  color: var(--color-white);
}

.footer-contact a {
  color: var(--color-white);
}

.footer-contact a:hover {
  color: var(--color-accent);
}

.footer-social {
  display: flex;
  gap: var(--space-4);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-white);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background-color: var(--color-accent);
}

.footer-social svg {
  width: 20px;
  height: 20px;
}

.footer-logos {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-4);
}

.footer-logos img {
  height: 50px;
  width: auto;
  opacity: 0.9;
}

.footer-sister {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
}

.footer-sister__label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.5);
  position: relative;
}

.footer-bottom::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

@media (max-width: 768px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    text-align: center;
  }

  .footer-brand p {
    max-width: none;
  }

  .footer-social {
    justify-content: center;
  }

  .footer-logos {
    align-items: center;
  }

  .footer-sister {
    align-items: center;
  }
}

/* ----------------------------------------
   Newsletter Grid
   ---------------------------------------- */
.newsletter-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.newsletter-item {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.newsletter-item__image {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.newsletter-item__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.newsletter-item__body {
  padding: var(--space-6);
}

.newsletter-item__title {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.newsletter-item__text {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

@media (max-width: 768px) {
  .newsletter-grid {
    grid-template-columns: 1fr;
  }
}

/* ----------------------------------------
   CTA Banner
   ---------------------------------------- */
.cta-banner {
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: var(--space-12) 0;
  text-align: center;
}

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.cta-banner p {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: var(--space-6);
}

/* ----------------------------------------
   Skip Link (Accessibility)
   ---------------------------------------- */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  padding: var(--space-2) var(--space-4);
  background-color: var(--color-primary);
  color: var(--color-white);
  z-index: 9999;
}

.skip-link:focus {
  top: 0;
}

/* ----------------------------------------
   Prose (Long-form content)
   ---------------------------------------- */
.prose h2 {
  margin-top: var(--space-10);
}

.prose h2:first-child {
  margin-top: 0;
}

.prose ul,
.prose ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

.prose li {
  margin-bottom: var(--space-2);
  list-style: disc;
  color: var(--color-text-muted);
}

.prose a {
  color: var(--color-primary);
  text-decoration: underline;
}

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