/* VinoStellar CSS - Dark Chemistry Theme */

/* CSS Custom Properties (Variables) */
:root {
  --bg: #05070d;
  --bg2: #0a1430;
  --ink: #ffffff;
  --ink-dim: #b9c6ff;
  --accent: #7aa2ff;
  --line: #26345f;
  --card: #0e1733;
  --muted: #93a4d6;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
  color: var(--ink);
  line-height: 1.6;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Typography */
h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

p {
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.6;
  margin-bottom: 1rem;
  color: var(--ink-dim);
}

/* Canvas Background */
#chemistry-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
}

/* Navigation */
.nav-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(5, 7, 13, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  transition: all 0.3s ease;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--accent);
  background: rgba(122, 162, 255, 0.1);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.nav-link[aria-current="page"] {
  color: var(--accent);
  background: rgba(122, 162, 255, 0.2);
}

.cta-button {
  background: var(--accent);
  color: var(--bg);
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  min-height: 44px;
  display: flex;
  align-items: center;
  border: none;
  cursor: pointer;
}

.cta-button:hover,
.cta-button:focus {
  background: var(--ink);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(122, 162, 255, 0.3);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Mobile Navigation */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--ink);
  font-size: 1.5rem;
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
}

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

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 1rem 2rem;
    border-top: 1px solid var(--line);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .navbar {
    padding: 1rem;
  }

  body {
    font-size: 14px;
  }
}

/* Main Content */
main {
  padding-top: 80px;
}

/* Sections */
.section {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.hero {
  text-align: center;
  padding: 6rem 2rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero-content {
  max-width: 800px;
  position: relative;
  z-index: 10;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, 
    rgba(5, 7, 13, 0.1) 0%, 
    rgba(5, 7, 13, 0.3) 50%, 
    rgba(5, 7, 13, 0.1) 100%);
  z-index: 1;
}

.hero h1 {
  background: linear-gradient(135deg, var(--ink) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin: 2rem 0;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  padding: 1rem 2rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
  padding: 1rem 2rem;
  border: 2px solid var(--line);
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
  font-size: 1.1rem;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--ink);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(122, 162, 255, 0.3);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  transform: translateY(-2px);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.trust-row {
  margin-top: 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.trust-items {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Cards */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 2rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(122, 162, 255, 0.2);
  border-color: var(--accent);
}

.card h3 {
  color: var(--accent);
  margin-bottom: 1rem;
}

.card-cta {
  background: var(--line);
  color: var(--ink);
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  display: inline-block;
  margin-top: 1rem;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
}

.card-cta:hover,
.card-cta:focus {
  background: var(--accent);
  color: var(--bg);
  transform: translateY(-2px);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Technology Section */
.tech-bullets {
  list-style: none;
  margin: 2rem 0;
}

.tech-bullets li {
  padding: 0.5rem 0;
  padding-left: 2rem;
  position: relative;
}

.tech-bullets li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

/* Client Stories Slider */
.stories-slider {
  overflow: hidden;
  margin: 3rem 0;
}

.stories-track {
  display: flex;
  gap: 2rem;
  transition: transform 0.5s ease;
}

.story-card {
  min-width: 300px;
  flex-shrink: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 2rem;
  position: relative;
}

.story-card::before {
  content: """;
  position: absolute;
  top: 1rem;
  left: 1.5rem;
  font-size: 3rem;
  color: var(--accent);
  opacity: 0.3;
}

.story-quote {
  font-style: italic;
  margin-bottom: 1rem;
  padding-top: 1rem;
}

.story-author {
  color: var(--muted);
  font-size: 0.9rem;
}

/* Form Styles */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--ink);
  font-weight: 500;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 1rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  color: var(--ink);
  font-size: 1rem;
  transition: all 0.3s ease;
  min-height: 44px;
}

.form-input:focus,
.form-textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-color: var(--accent);
}

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

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin: 1rem 0;
}

.checkbox {
  min-width: 20px;
  min-height: 20px;
  margin-top: 2px;
}

.checkbox-label {
  font-size: 0.9rem;
  line-height: 1.4;
  cursor: pointer;
}

/* Contact Layout */
.contact-container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-sidebar {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 2rem;
}

.contact-sidebar h3 {
  color: var(--accent);
  margin-bottom: 1rem;
}

/* Footer */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 3rem 2rem 2rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-links {
  display: flex;
  gap: 2rem;
  justify-content: center;
  margin: 1rem 0;
  flex-wrap: wrap;
}

.footer-link {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.3s ease;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.footer-link:hover,
.footer-link:focus {
  color: var(--accent);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 0.25rem;
  padding: 0.25rem 0.5rem;
}

.footer-legal {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 2rem;
  line-height: 1.4;
}

/* Accessibility & Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .contact-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn-primary,
  .btn-secondary {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
  
  .trust-items {
    gap: 1rem;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: 3rem 1rem;
  }
  
  .hero {
    padding: 4rem 1rem;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    width: 100%;
  }
  
  .btn-primary,
  .btn-secondary {
    width: 100%;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 1rem;
  }
}

/* Hide content for screen readers when appropriate */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus visible for better accessibility */
*:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}