/* ============================================
   REFRACTIVE GLASSMORPHISM DESIGN SYSTEM
   Indoor Water Feature Design Website
   ============================================ */

:root {
  /* Color Palette */
  --color-abyssal-navy: #020B1A;
  --color-bioluminescent-cyan: #00F7FF;
  --color-cold-mercury: #E5E7E9;
  --color-oxygen-white: #F0FDFF;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-secondary: 'Space Grotesk', sans-serif;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 247, 255, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 247, 255, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 247, 255, 0.2);
  --shadow-glow: 0 0 20px rgba(0, 247, 255, 0.3);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index layers */
  --z-base: 1;
  --z-header: 100;
  --z-menu: 200;
  --z-modal: 300;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-primary);
  background: var(--color-abyssal-navy);
  color: var(--color-cold-mercury);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 50%, rgba(0, 247, 255, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(0, 247, 255, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--color-oxygen-white);
  text-shadow: 0 0 10px rgba(0, 247, 255, 0.3);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-cold-mercury);
}

a {
  color: var(--color-bioluminescent-cyan);
  text-decoration: none;
  transition: all var(--transition-base);
}

a:hover {
  color: var(--color-oxygen-white);
  text-shadow: 0 0 8px rgba(0, 247, 255, 0.6);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
  position: relative;
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: rgba(2, 11, 26, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 247, 255, 0.1);
  z-index: var(--z-header);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.site-header .burger-toggle {
  position: relative;
  z-index: calc(var(--z-header) + 1);
}

.brand-text {
  font-family: var(--font-secondary);
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 700;
  color: var(--color-oxygen-white);
  text-shadow: 0 0 15px rgba(0, 247, 255, 0.5);
}

.main-nav {
  display: flex;
  gap: 10px;
  align-items: center;
  list-style: none;
}

.main-nav a {
  font-size: 0.95rem;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--color-bioluminescent-cyan);
  transition: width var(--transition-base);
}

.main-nav a:hover::after {
  width: 80%;
}

.burger-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(0, 247, 255, 0.3);
  color: var(--color-bioluminescent-cyan);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 1.25rem;
  transition: all var(--transition-base);
  order: 999;
  z-index: 1000001;
}

.burger-toggle:hover {
  border-color: var(--color-bioluminescent-cyan);
  box-shadow: var(--shadow-glow);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 400px;
  height: 100vh;
  background: rgba(2, 11, 26, 0.98);
  backdrop-filter: blur(20px);
  border-left: 1px solid rgba(0, 247, 255, 0.2);
  z-index: 9999;
  padding: var(--space-xl);
  transition: right var(--transition-slow);
  overflow-y: auto;
  box-shadow: -5px 0 20px rgba(0, 0, 0, 0.5);
}

.mobile-menu.active {
  display: block;
  right: 0;
}

.mobile-menu-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: transparent;
  border: 1px solid rgba(0, 247, 255, 0.3);
  color: var(--color-bioluminescent-cyan);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.mobile-menu-close:hover {
  border-color: var(--color-bioluminescent-cyan);
  box-shadow: var(--shadow-glow);
}

.mobile-nav {
  list-style: none;
  margin-top: var(--space-xl);
}

.mobile-nav li {
  margin-bottom: var(--space-md);
}

.mobile-nav a {
  display: block;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 247, 255, 0.1);
  transition: all var(--transition-base);
}

.mobile-nav a:hover {
  background: rgba(0, 247, 255, 0.1);
  border-color: var(--color-bioluminescent-cyan);
  transform: translateX(5px);
}

@media (max-width: 1023px) {
  .main-nav {
    display: none;
  }
  
  .burger-toggle {
    display: block;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: var(--space-sm) var(--space-md);
  }
  
  .mobile-menu {
    max-width: 100%;
  }
}

/* ============================================
   MAIN CONTENT
   ============================================ */

main {
  position: relative;
  z-index: var(--z-base);
  min-height: calc(100vh - 200px);
}

/* ============================================
   FULL-WIDTH BANNERS
   ============================================ */

.hero-banner {
  position: relative;
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  height: 60vh;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-abyssal-navy);
}

.banner-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  z-index: 1;
}

.banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-xl);
  max-width: 900px;
  background: rgba(2, 11, 26, 0.6);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 247, 255, 0.2);
  box-shadow: var(--shadow-lg);
}

.banner-content h1 {
  margin-bottom: var(--space-md);
}

.banner-content p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-cold-mercury);
}

@media (max-width: 768px) {
  .hero-banner {
    height: 50vh;
    min-height: 300px;
  }
  
  .banner-content {
    padding: var(--space-lg);
  }
}

/* ============================================
   SECTIONS
   ============================================ */

.content-section {
  padding: var(--space-xxl) var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  justify-items: center;
}

.section-item {
  background: rgba(2, 11, 26, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 247, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  max-width: 320px;
  width: 100%;
  text-align: center;
}

.section-item:hover {
  border-color: var(--color-bioluminescent-cyan);
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}

.section-image {
  width: 100%;
  max-width: 280px;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin: 0 auto var(--space-md);
  display: block;
  opacity: 0.9;
}

.section-title {
  color: var(--color-oxygen-white);
  margin-bottom: var(--space-sm);
}

.section-text {
  color: var(--color-cold-mercury);
  font-size: 0.95rem;
}

/* ============================================
   PRODUCTS GRID
   ============================================ */

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  justify-items: center;
}

.product-card {
  background: rgba(2, 11, 26, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 247, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  max-width: 320px;
  width: 100%;
  text-align: center;
}

.product-card:hover {
  border-color: var(--color-bioluminescent-cyan);
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}

.product-image {
  width: 100%;
  max-width: 280px;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin: 0 auto var(--space-md);
  display: block;
}

.product-title {
  color: var(--color-oxygen-white);
  margin-bottom: var(--space-sm);
}

.product-description {
  color: var(--color-cold-mercury);
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

.product-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-bioluminescent-cyan);
  text-shadow: 0 0 10px rgba(0, 247, 255, 0.5);
  margin-top: auto;
}

/* ============================================
   CONTACT FORM
   ============================================ */

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.contact-form {
  background: rgba(2, 11, 26, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 247, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--color-oxygen-white);
  font-weight: 500;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background: rgba(2, 11, 26, 0.8);
  border: 1px solid rgba(0, 247, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--color-cold-mercury);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-bioluminescent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 247, 255, 0.1);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.form-checkbox input[type="checkbox"] {
  margin-top: 4px;
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.form-checkbox label {
  color: var(--color-cold-mercury);
  font-size: 0.9rem;
  cursor: pointer;
}

.btn-submit {
  background: linear-gradient(135deg, rgba(0, 247, 255, 0.2), rgba(0, 247, 255, 0.1));
  border: 1px solid var(--color-bioluminescent-cyan);
  color: var(--color-bioluminescent-cyan);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  width: 100%;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 10px;
}

.btn-submit:hover {
  background: rgba(0, 247, 255, 0.2);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
  color: white;
}

.btn-submit.inline {
  display: inline-block;
  width: auto;
  padding: 1rem 2rem;
}

.contact-info {
  background: rgba(2, 11, 26, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 247, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.contact-info-item {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(0, 247, 255, 0.1);
}

.contact-info-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.contact-info-label {
  color: var(--color-bioluminescent-cyan);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.contact-info-value {
  color: var(--color-cold-mercury);
  font-size: 1.1rem;
}

.map-container {
  margin-top: var(--space-xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0, 247, 255, 0.1);
}

.map-container iframe {
  width: 100%;
  height: 400px;
  border: 0;
  display: block;
}

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

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
  background: rgba(2, 11, 26, 0.9);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(0, 247, 255, 0.1);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-xxl);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
}

.footer-section h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-md);
  color: var(--color-oxygen-white);
}

.footer-nav {
  list-style: none;
}

.footer-nav li {
  margin-bottom: var(--space-sm);
}

.footer-nav a {
  color: var(--color-cold-mercury);
  font-size: 0.9rem;
  transition: all var(--transition-base);
}

.footer-nav a:hover {
  color: var(--color-bioluminescent-cyan);
  padding-left: 5px;
}

.footer-nav li {
  color: var(--color-cold-mercury);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-copyright {
  text-align: center;
  padding-top: var(--space-lg);
  margin-top: var(--space-lg);
  border-top: 1px solid rgba(0, 247, 255, 0.1);
  color: var(--color-cold-mercury);
  font-size: 0.9rem;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: var(--space-lg);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ============================================
   PRIVACY MODAL
   ============================================ */

.privacy-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(2, 11, 26, 0.95);
  backdrop-filter: blur(10px);
  z-index: var(--z-modal);
  overflow-y: auto;
}

.privacy-modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.modal-content {
  background: rgba(2, 11, 26, 0.98);
  border: 1px solid rgba(0, 247, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: transparent;
  border: 1px solid rgba(0, 247, 255, 0.3);
  color: var(--color-bioluminescent-cyan);
  width: 35px;
  height: 35px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.modal-close:hover {
  border-color: var(--color-bioluminescent-cyan);
  box-shadow: var(--shadow-glow);
}

/* ============================================
   THANK YOU PAGE
   ============================================ */

.thank-you-container {
  max-width: 600px;
  margin: var(--space-xxl) auto;
  padding: var(--space-xl);
  text-align: center;
  background: rgba(2, 11, 26, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 247, 255, 0.1);
  border-radius: var(--radius-lg);
}

.thank-you-icon {
  font-size: 4rem;
  color: var(--color-bioluminescent-cyan);
  margin-bottom: var(--space-lg);
  text-shadow: var(--shadow-glow);
}

/* ============================================
   404 PAGE
   ============================================ */

.error-container {
  max-width: 600px;
  margin: var(--space-xxl) auto;
  padding: var(--space-xl);
  text-align: center;
  background: rgba(2, 11, 26, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 247, 255, 0.1);
  border-radius: var(--radius-lg);
}

.error-code {
  font-size: 6rem;
  font-weight: 700;
  color: var(--color-bioluminescent-cyan);
  text-shadow: var(--shadow-glow);
  margin-bottom: var(--space-md);
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .content-section {
    padding: var(--space-lg) var(--space-md);
  }
  
  .section-grid,
  .products-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes glow-pulse {
  0%, 100% {
    text-shadow: 0 0 10px rgba(0, 247, 255, 0.3);
  }
  50% {
    text-shadow: 0 0 20px rgba(0, 247, 255, 0.6);
  }
}

.glow-text {
  animation: glow-pulse 3s ease-in-out infinite;
}