/* ==========================================================================
   VIDACOLOR Modern Corporate Stylesheet
   Design Tokens, Utilities, Components & Layout
   ========================================================================== */

:root {
  /* Color Palette */
  --color-primary: #0f172a;        /* Slate 900 */
  --color-primary-light: #1e293b;  /* Slate 800 */
  --color-accent: #0284c7;         /* Ocean Cobalt Blue */
  --color-accent-hover: #0369a1;   /* Deep Cyan Blue */
  --color-accent-light: #e0f2fe;   /* Light Sky Tint */
  --color-text-main: #334155;      /* Slate 700 */
  --color-text-muted: #64748b;     /* Slate 500 */
  --color-text-heading: #0f172a;   /* Slate 900 */
  --color-bg-body: #ffffff;
  --color-bg-alt: #f8fafc;         /* Slate 50 */
  --color-bg-card: #ffffff;
  --color-border: #e2e8f0;         /* Slate 200 */
  --color-border-hover: #cbd5e1;

  /* Typography */
  --font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-base: 1rem;          /* 16px */

  /* Spacing Rhythm */
  --space-xs: 0.5rem;   /* 8px */
  --space-sm: 1rem;     /* 16px */
  --space-md: 1.5rem;   /* 24px */
  --space-lg: 2.5rem;   /* 40px */
  --space-xl: 4rem;     /* 64px */
  --space-2xl: 6rem;    /* 96px */

  /* Layout */
  --container-max-width: 1200px;
  --header-height: 80px;
  --header-height-shrink: 68px;

  /* Shadows & Depth */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.65;
  color: var(--color-text-main);
  background-color: var(--color-bg-body);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover, a:focus-visible {
  color: var(--color-accent-hover);
}

ul, ol {
  list-style: none;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-heading);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-title h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
  position: relative;
  display: inline-block;
}

.section-title hr {
  border: none;
  height: 3px;
  width: 50px;
  background: var(--color-accent);
  margin: var(--space-xs) auto var(--space-sm);
  border-radius: var(--radius-full);
}

.section-title p {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 750px;
  margin: 0 auto;
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-2xl) 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

/* Header & Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  transition: height var(--transition-normal), box-shadow var(--transition-normal), background var(--transition-normal);
}

.navbar.scrolled {
  height: var(--header-height-shrink);
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.98);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar-brand img {
  height: 38px;
  width: auto;
  transition: transform var(--transition-fast);
}

.navbar-brand:hover img {
  transform: scale(1.02);
}

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

.nav-link {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-text-main);
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-accent);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Language Switcher */
.lang-switch-item {
  display: flex;
  align-items: center;
}

.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-bg-alt);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  font-size: 0.825rem;
  font-weight: 700;
}

.lang-btn {
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  color: var(--color-accent);
}

.lang-btn.active {
  color: #ffffff;
  background-color: var(--color-accent);
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.3);
}

.lang-separator {
  color: var(--color-border);
  font-weight: 400;
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  flex-direction: column;
  gap: 5px;
}

.mobile-nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition-fast);
}

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

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

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

/* Hero Section */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url('../img/salone.jpg') center/cover no-repeat;
  margin-top: var(--header-height);
  color: #ffffff;
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.45) 0%, rgba(30, 41, 59, 0.35) 100%);
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 850px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-logo {
  max-width: 480px;
  width: 90%;
  margin-bottom: var(--space-md);
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
}

.hero-subtitle {
  font-size: clamp(1.2rem, 2.5vw, 1.75rem);
  font-weight: 300;
  margin-bottom: var(--space-lg);
  color: #f1f5f9;
  letter-spacing: -0.01em;
}

.btn-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2.25rem;
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  background-color: var(--color-accent);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
  transition: all var(--transition-fast);
}

.btn-custom:hover,
.btn-custom:focus-visible {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
  color: #ffffff;
}

/* About Us Section */
.about-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.about-header h1 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--color-primary);
  font-weight: 700;
  max-width: 900px;
  margin: 0 auto;
}

.grid-2col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.card-box {
  background: var(--color-bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-box-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.about-image-wrap {
  margin-top: var(--space-lg);
  text-align: center;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.about-image-wrap img {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  display: block;
}

.about-list p {
  margin-bottom: var(--space-sm);
}

.about-list p b,
.about-list b {
  font-weight: 600;
}

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

.menu-item:last-child {
  margin-bottom: 0;
}

.menu-item-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.menu-item-description {
  color: var(--color-text-main);
  font-size: 0.975rem;
}

/* Products & Services Section */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.product-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.product-card-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.product-service-item {
  padding: var(--space-md);
  background: var(--color-bg-alt);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: var(--space-md);
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.product-service-item:last-child {
  margin-bottom: 0;
}

.product-service-item:hover {
  transform: translateX(4px);
  background: var(--color-accent-light);
  box-shadow: var(--shadow-sm);
}

.product-service-item .item-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.product-service-item .item-description {
  font-size: 0.95rem;
  color: var(--color-text-main);
  line-height: 1.6;
}

/* Portfolio / Gallery Section */
.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  padding: 0.5rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  color: var(--color-text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.portfolio-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  aspect-ratio: 4 / 3;
  cursor: pointer;
  background: var(--color-primary);
}

.portfolio-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.portfolio-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
  padding: var(--space-sm);
  text-align: center;
}

.portfolio-card:hover img {
  transform: scale(1.06);
}

.portfolio-card:hover .portfolio-card-overlay {
  opacity: 1;
}

.portfolio-card-title {
  color: #ffffff;
  font-size: 1.1rem;
  font-weight: 700;
}

/* Lightbox Modal */
.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  padding: var(--space-md);
}

.lightbox-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-img {
  max-width: 100%;
  max-height: 80vh;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.lightbox-caption {
  color: #ffffff;
  margin-top: var(--space-sm);
  font-size: 1.1rem;
  font-weight: 600;
}

.lightbox-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
}

/* Ceramic Technology Cards */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.tech-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.tech-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.tech-card-img {
  width: 100%;
  height: 240px;
  overflow: hidden;
}

.tech-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.tech-card:hover .tech-card-img img {
  transform: scale(1.05);
}

.tech-card-body {
  padding: var(--space-lg);
  text-align: center;
}

.tech-card-body h3 {
  font-size: 1.25rem;
  color: var(--color-primary);
}

/* Call Reservation / Contact Banner */
.call-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #ffffff;
  padding: var(--space-xl) 0;
  text-align: center;
}

.call-banner h2 {
  color: #ffffff;
  font-size: 2rem;
  letter-spacing: 0.05em;
}

/* Contact Info Section */
.contact-section {
  padding: var(--space-2xl) 0;
  text-align: center;
}

.contact-description {
  max-width: 850px;
  margin: 0 auto var(--space-xl);
  font-size: 1.05rem;
  color: var(--color-text-main);
  line-height: 1.7;
}

/* Footer */
.site-footer {
  background: var(--color-primary);
  color: #94a3b8;
  padding: var(--space-2xl) 0 var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  text-align: center;
  margin-bottom: var(--space-xl);
}

.footer-col h3 {
  color: #ffffff;
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-item {
  font-size: 0.95rem;
  line-height: 1.7;
}

.contact-item strong, .contact-item b {
  color: #f1f5f9;
}

.contact-img {
  display: inline-block;
  margin-bottom: var(--space-xs);
}

.footer-copyright {
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.95rem;
  color: #cbd5e1;
}

.footer-copyright h5 {
  color: #f1f5f9;
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
}

/* Scroll Entry Reveal Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .tech-card:hover,
  .card-box:hover,
  .btn-custom:hover {
    transform: none;
  }
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .grid-2col,
  .products-grid,
  .team-grid,
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .mobile-nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 280px;
    height: calc(100vh - var(--header-height));
    background: #ffffff;
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
    transition: right var(--transition-normal);
  }

  .nav-menu.is-active {
    right: 0;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 70vh;
  }
}