/* ============================================
   THE URBAN TEA SOMMELIER - VAPOR-ZEN AESTHETIC
   ============================================ */

:root {
  /* Color Palette */
  --color-neon-jade: #00FFAB;
  --color-deep-slate: #1E2124;
  --color-oxygen-white: #F8F9FA;
  --color-ultraviolet: #7B61FF;
  --color-glass-bg: rgba(248, 249, 250, 0.1);
  --color-glass-border: rgba(0, 255, 171, 0.3);
  
  /* Typography */
  --font-primary: 'Poppins', sans-serif;
  --font-secondary: 'Noto Sans JP', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  --space-xxl: 6rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 50%;
  
  /* Shadows */
  --shadow-glass: 0 8px 32px 0 rgba(0, 255, 171, 0.15);
  --shadow-neon: 0 0 20px rgba(0, 255, 171, 0.5);
  --shadow-deep: 0 4px 20px rgba(30, 33, 36, 0.3);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index layers */
  --z-particles: 1;
  --z-content: 10;
  --z-header: 100;
  --z-menu: 200;
}

/* ============================================
   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-deep-slate);
  color: var(--color-oxygen-white);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Particle System Background */
.particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-particles);
  pointer-events: none;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  font-family: var(--font-secondary);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-family: var(--font-secondary);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
  margin-bottom: var(--space-md);
  font-size: clamp(0.875rem, 2vw, 1rem);
}

a {
  color: var(--color-neon-jade);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-ultraviolet);
}

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

.site-header {
  position: relative;
  z-index: var(--z-header);
  padding: var(--space-lg);
  background: rgba(30, 33, 36, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-glass-border);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.brand-name {
  font-family: var(--font-secondary);
  font-size: clamp(0.8rem, 1vw, 1.45rem);
  font-weight: 700;
  color: var(--color-neon-jade);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.main-nav {
  display: flex;
  align-items: center;
}

.nav-link {
  color: var(--color-oxygen-white);
  font-size: clamp(0.875rem, 2vw, 1rem);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
}

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

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

/* Burger Menu */
.burger-toggle {
  display: none;
  background: transparent;
  border: 2px solid var(--color-neon-jade);
  border-radius: var(--radius-sm);
  width: 44px;
  height: 44px;
  cursor: pointer;
  position: relative;
  z-index: var(--z-menu);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  padding: var(--space-sm);
  transition: all var(--transition-base);
}

.burger-toggle:hover {
  border-color: var(--color-ultraviolet);
  box-shadow: var(--shadow-neon);
}

.burger-line {
  width: 24px;
  height: 2px;
  background: var(--color-neon-jade);
  transition: all var(--transition-base);
  border-radius: 2px;
}

.burger-toggle.active .burger-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.burger-toggle.active .burger-line:nth-child(2) {
  opacity: 0;
}

.burger-toggle.active .burger-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 400px;
  height: 100vh;
  background: rgba(30, 33, 36, 0.98);
  backdrop-filter: blur(30px);
  border-left: 1px solid var(--color-glass-border);
  z-index: calc(var(--z-menu) - 1);
  transition: right var(--transition-slow);
  padding: var(--space-xxl) var(--space-lg);
  overflow-y: auto;
}

.mobile-nav.active {
  right: 0;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.mobile-nav-link {
  color: var(--color-oxygen-white);
  font-size: 1.25rem;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  display: block;
  transition: all var(--transition-base);
  border: 1px solid transparent;
}

.mobile-nav-link:hover {
  background: var(--color-glass-bg);
  border-color: var(--color-glass-border);
  padding-left: var(--space-lg);
}

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

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

main {
  position: relative;
  z-index: var(--z-content);
}

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

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

.banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-xl);
  max-width: 900px;
  margin: 0 auto;
}

.banner-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.4;
}

.banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(30, 33, 36, 0.7) 0%,
    rgba(30, 33, 36, 0.5) 50%,
    rgba(30, 33, 36, 0.8) 100%
  );
  z-index: 1;
}

.banner-title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  margin-bottom: var(--space-lg);
  text-shadow: 0 0 30px rgba(0, 255, 171, 0.5);
}

.banner-text {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  line-height: 1.8;
  max-width: 700px;
  margin: 0 auto;
}

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

.content-section {
  padding: var(--space-xxl) var(--space-lg);
  max-width: 1400px;
  margin: 0 auto;
  text-align: center;
}

.content-section > * {
  text-align: left;
}

.content-section > .section-title {
  text-align: center;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-xl);
  position: relative;
  display: inline-block;
  width: 100%;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-neon-jade), transparent);
}

/* Glass Morphism Cards */
.glass-card {
  background: var(--color-glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-glass);
  transition: all var(--transition-base);
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-neon);
  border-color: var(--color-neon-jade);
}

/* ============================================
   GRID LAYOUTS
   ============================================ */

.grid-two {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.grid-three {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.grid-four {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

/* Image Grid Sections */
.section-image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.section-image-item {
  background: var(--color-glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.section-image-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-neon);
  border-color: var(--color-neon-jade);
}

.section-image-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
}

.section-image-content {
  padding: var(--space-lg);
}

.section-image-content h3 {
  color: var(--color-neon-jade);
  margin-bottom: var(--space-sm);
}

.section-image-content p {
  color: rgba(248, 249, 250, 0.8);
  line-height: 1.6;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  font-size: clamp(0.875rem, 2vw, 1rem);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 10px;
}

.btn-primary {
  background: var(--color-neon-jade);
  color: var(--color-deep-slate);
  margin-top: 10px;
  border-color: var(--color-neon-jade);
}

.btn-primary:hover {
  background: transparent;
  color: var(--color-neon-jade);
  box-shadow: var(--shadow-neon);
}

.btn-secondary {
  background: transparent;
  color: var(--color-neon-jade);
  border-color: var(--color-neon-jade);
}

.btn-secondary:hover {
  background: var(--color-neon-jade);
  color: var(--color-deep-slate);
}

.btn-ghost {
  background: transparent;
  color: var(--color-oxygen-white);
  border-color: var(--color-oxygen-white);
}

.btn-ghost:hover {
  background: var(--color-oxygen-white);
  color: var(--color-deep-slate);
}

/* ============================================
   PRODUCT CARDS
   ============================================ */

.product-card {
  background: var(--color-glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-neon);
  border-color: var(--color-neon-jade);
}

.product-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  max-width: 100%;
}

.product-title {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  margin-bottom: var(--space-sm);
  color: var(--color-neon-jade);
}

.product-description {
  flex-grow: 1;
  margin-bottom: var(--space-md);
  color: rgba(248, 249, 250, 0.8);
}

.product-price {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--color-ultraviolet);
  margin-top: auto;
}

/* ============================================
   FORMS
   ============================================ */

.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

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

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

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-md);
  color: var(--color-oxygen-white);
  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-neon-jade);
  box-shadow: 0 0 0 3px rgba(0, 255, 171, 0.1);
}

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

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

.checkbox-input {
  margin-top: 4px;
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.checkbox-label {
  font-size: 0.875rem;
  line-height: 1.5;
}

/* ============================================
   MAPS
   ============================================ */

.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: var(--space-xl);
  border: 1px solid var(--color-glass-border);
}

.map-iframe {
  width: 100%;
  height: 100%;
  border: none;
}

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

.site-footer {
  background: rgba(30, 33, 36, 0.95);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-glass-border);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-xxl);
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
}

.footer-section-title {
  color: var(--color-neon-jade);
  margin-bottom: var(--space-md);
  font-size: 1.125rem;
}

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

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

.footer-link {
  color: rgba(248, 249, 250, 0.7);
  transition: color var(--transition-base);
}

.footer-link:hover {
  color: var(--color-neon-jade);
}

.footer-contact-info {
  color: rgba(248, 249, 250, 0.7);
  line-height: 1.8;
}

.footer-copyright {
  text-align: center;
  padding-top: var(--space-lg);
  margin-top: var(--space-lg);
  border-top: 1px solid var(--color-glass-border);
  color: rgba(248, 249, 250, 0.5);
  font-size: 0.875rem;
}

/* ============================================
   SPECIAL FEATURES
   ============================================ */

/* Circular Navigation */
.circular-nav {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background: var(--color-glass-bg);
  backdrop-filter: blur(20px);
  border: 2px solid var(--color-neon-jade);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: var(--z-header);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-neon);
}

.circular-nav:hover {
  transform: scale(1.1);
  box-shadow: 0 0 30px rgba(0, 255, 171, 0.8);
}

.circular-nav-icon {
  width: 40px;
  height: 40px;
  color: var(--color-neon-jade);
}

/* Calculator Styles */
.calculator-container {
  max-width: 800px;
  margin: 0 auto;
}

.oscilloscope {
  width: 100%;
  height: 300px;
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  margin: var(--space-xl) 0;
  position: relative;
  overflow: hidden;
}

.waveform {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  stroke: var(--color-neon-jade);
  stroke-width: 2;
  fill: none;
}

/* 3D Globe Container */
.globe-container {
  width: 100%;
  height: 500px;
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  margin: var(--space-xl) 0;
  position: relative;
  overflow: hidden;
}

/* Sensory Tuner */
.sensory-tuner {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding: var(--space-xl);
}

.fluid-shape {
  width: 100%;
  height: 400px;
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  margin: var(--space-xl) 0;
  position: relative;
  cursor: crosshair;
  overflow: hidden;
}

.shape-visualization {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-full);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: all var(--transition-slow);
  background: radial-gradient(circle, var(--color-neon-jade), var(--color-ultraviolet));
  filter: blur(20px);
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  aspect-ratio: 1;
  cursor: pointer;
}

.gallery-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover .gallery-image {
  transform: scale(1.1);
}

.gallery-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 255, 171, 0.1);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

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

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

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

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

.parallax-layer {
  transition: transform var(--transition-slow);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
  :root {
    --space-xl: 2rem;
    --space-xxl: 3rem;
  }
  
  .content-section {
    padding: var(--space-xl) var(--space-md);
  }
  
  .grid-two,
  .grid-three,
  .grid-four {
    grid-template-columns: 1fr;
  }
  
  .circular-nav {
    width: 60px;
    height: 60px;
    bottom: var(--space-md);
    right: var(--space-md);
  }
  
  .hero-banner {
    min-height: 50vh;
  }
}

@media (max-width: 480px) {

  
  .banner-content {
    padding: var(--space-lg);
  }
  
  .glass-card {
    padding: var(--space-md);
  }
}

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

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 255, 171, 0.5);
  }
  50% {
    box-shadow: 0 0 40px rgba(0, 255, 171, 0.8);
  }
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-glow {
  animation: glow 2s ease-in-out infinite;
}