/* ============================================
   Bio-Tech Design System - Fluorescing Interface
   ============================================ */

:root {
  /* Base Colors - Organic Transparency */
  --color-abyss: #00202E;
  --color-ultraviolet: #9D00FF;
  --color-chlorophyll: #0FFF50;
  --color-sterile: #E8E8E8;
  --color-primary: #00202E;
  --color-secondary: #9D00FF;
  --color-accent: #0FFF50;
  --color-text: #E8E8E8;
  --color-text-dim: #B0B0B0;
  
  /* Typography */
  --font-primary: 'Comfortaa', sans-serif;
  --font-data: 'Exo 2', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;
  
  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 50%;
  
  /* Shadows & Glows */
  --glow-ultraviolet: 0 0 20px rgba(157, 0, 255, 0.5);
  --glow-chlorophyll: 0 0 20px rgba(15, 255, 80, 0.5);
  --glow-soft: 0 0 40px rgba(157, 0, 255, 0.3);
  --shadow-bio: 0 4px 20px rgba(0, 32, 46, 0.5);
  
  /* Transitions */
  --transition-fast: 0.3s ease;
  --transition-medium: 0.5s ease;
  --transition-slow: 1s ease;
  
  /* Bio-Pulse Animation (6 breaths per minute = 10s cycle) */
  --pulse-duration: 10s;
}

/* ============================================
   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-abyss);
  color: var(--color-text);
  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(157, 0, 255, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 50%, rgba(15, 255, 80, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Bio-Blur Effect */
body::after {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(circle, rgba(157, 0, 255, 0.05) 1px, transparent 1px),
    radial-gradient(circle, rgba(15, 255, 80, 0.05) 1px, transparent 1px);
  background-size: 100px 100px, 150px 150px;
  animation: float 20s infinite linear;
  pointer-events: none;
  z-index: 0;
  filter: blur(2px);
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 { font-size: clamp(1.4rem, 4vw, 3.5rem); }
h2 { font-size: clamp(1.2rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1rem, 2vw, 1rem); }
h4 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); }

p {
  margin-bottom: var(--space-md);
  font-size: clamp(0.9rem, 2vw, 1.1rem);
}

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

a:hover {
  color: var(--color-ultraviolet);
  text-shadow: var(--glow-chlorophyll);
}

/* ============================================
   Header & Navigation
   ============================================ */

.header {
  position: relative;
  background: rgba(0, 32, 46, 0.95);
  backdrop-filter: blur(10px);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 2px solid var(--color-ultraviolet);
  box-shadow: var(--shadow-bio);
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.header-logo {
  font-size: clamp(1rem, 2vw, 1.45rem);
  font-weight: 700;
  color: var(--color-chlorophyll);
  text-shadow: var(--glow-chlorophyll);
  flex: 1;
  min-width: 200px;
}

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

.nav-list {
  display: flex;
  list-style: none;
  gap: 15px;
  align-items: center;
}

.nav-link {
  color: var(--color-text);
  font-size: clamp(0.9rem, 2vw, 1rem);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  position: relative;
  transition: var(--transition-fast);
  animation: bioPulse var(--pulse-duration) ease-in-out infinite;
}

.nav-link:hover {
  background: rgba(157, 0, 255, 0.2);
  box-shadow: var(--glow-ultraviolet);
}

/* Bio-Pulse Animation (6 breaths per minute) */
@keyframes bioPulse {
  0%, 100% { 
    transform: scale(1);
    opacity: 1;
  }
  50% { 
    transform: scale(1.05);
    opacity: 0.9;
  }
}

/* Burger Menu Button */
.burger-btn {
  display: none;
  background: transparent;
  border: 2px solid var(--color-ultraviolet);
  color: var(--color-text);
  font-size: 1rem;
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  z-index: 100001;
  margin-top: 10px;
}

.burger-btn:hover {
  background: rgba(157, 0, 255, 0.2);
  box-shadow: var(--glow-ultraviolet);
  color: white;
}

.burger-btn.active {
  background: var(--color-ultraviolet);
  color: var(--color-abyss);
}

/* Mobile Navigation */
@media (max-width: 1023px) {
  .header {
    position: relative;
  }
  
  .nav-list {
    display: none;
  }
  
  .burger-btn {
    display: block;
    position: absolute;
    right: var(--space-lg);
    top: 20%;
    transform: translateY(-50%);
    z-index: 100002;
  }
  
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background: rgba(0, 32, 46, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--space-xxl) var(--space-lg);
    padding-top: calc(var(--space-xxl) + 60px);
    border-left: 2px solid var(--color-ultraviolet);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
    transition: right var(--transition-medium);
    z-index: 100001;
    overflow-y: auto;
  }
  
  .nav.active {
    right: 0;
  }
  
  .nav.active .nav-list {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: var(--space-md);
    align-items: stretch;
    animation: slideIn 0.3s ease-out;
  }
  
  @keyframes slideIn {
    from {
      opacity: 0;
      transform: translateX(20px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }
  
  .nav-link {
    display: block;
    padding: var(--space-md);
    text-align: center;
    border: 1px solid rgba(157, 0, 255, 0.3);
    border-radius: var(--radius-md);
  }
  
  .header-logo {
    flex: 1;
  }
}

@media (max-width: 480px) {
  .header {
    padding: var(--space-sm) var(--space-md);
  }
  
  .header-logo {
    font-size: 1.2rem;
    min-width: auto;
  }
}

/* ============================================
   Main Content
   ============================================ */

.main {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - 200px);
}

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

.section {
  padding: var(--space-xxl) 0;
  position: relative;
}

/* ============================================
   Hero Banner
   ============================================ */

.hero {
  position: relative;
  padding: var(--space-xxl) var(--space-lg);
  text-align: center;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin-bottom: var(--space-xl);
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: var(--space-lg);
  text-shadow: 0 0 30px rgba(15, 255, 80, 0.5);
  animation: fadeInUp 1s ease-out;
}

.hero-text {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--color-text-dim);
  margin-bottom: var(--space-xl);
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-image {
  width: 100%;
  max-width: 800px;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--glow-soft);
  margin-top: var(--space-xl);
  animation: fadeInUp 1s ease-out 0.4s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Growth Tracker HUD
   ============================================ */

.growth-hud {
  position: fixed;
  top: 50%;
  right: var(--space-md);
  transform: translateY(-50%);
  background: rgba(0, 32, 46, 0.9);
  backdrop-filter: blur(10px);
  border: 2px solid var(--color-chlorophyll);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--glow-chlorophyll);
  z-index: 100;
  min-width: 200px;
  font-family: var(--font-data);
  font-size: 0.85rem;
}

.growth-hud-title {
  color: var(--color-chlorophyll);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
  text-align: center;
  border-bottom: 1px solid rgba(15, 255, 80, 0.3);
  padding-bottom: var(--space-sm);
}

.growth-hud-item {
  display: flex;
  justify-content: space-between;
  padding: var(--space-xs) 0;
  border-bottom: 1px solid rgba(15, 255, 80, 0.1);
}

.growth-hud-label {
  color: var(--color-text-dim);
}

.growth-hud-value {
  color: var(--color-chlorophyll);
  font-weight: 600;
}

@media (max-width: 768px) {
  .growth-hud {
    display: none;
  }
}

/* ============================================
   Cards & Grids
   ============================================ */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.card {
  background: rgba(0, 32, 46, 0.6);
  border: 2px solid rgba(157, 0, 255, 0.3);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition-medium);
  backdrop-filter: blur(5px);
}

.card:hover {
  border-color: var(--color-ultraviolet);
  box-shadow: var(--glow-ultraviolet);
  transform: translateY(-5px);
}

.card-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}

.card-title {
  color: var(--color-chlorophyll);
  margin-bottom: var(--space-sm);
}

.card-text {
  color: var(--color-text-dim);
  font-size: 0.95rem;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  background: transparent;
  border: 2px solid var(--color-chlorophyll);
  color: var(--color-chlorophyll);
  font-family: var(--font-primary);
  font-size: clamp(0.9rem, 2vw, 1rem);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: center;
  text-decoration: none;
}

.btn:hover {
  background: var(--color-chlorophyll);
  color: var(--color-abyss);
  box-shadow: var(--glow-chlorophyll);
  transform: scale(1.05);
}

.btn-secondary {
  border-color: var(--color-ultraviolet);
  color: var(--color-ultraviolet);
}

.btn-secondary:hover {
  background: var(--color-ultraviolet);
  color: var(--color-abyss);
  box-shadow: var(--glow-ultraviolet);
}

/* ============================================
   Forms
   ============================================ */

.form {
  max-width: 600px;
  margin: var(--space-xl) auto;
  background: rgba(0, 32, 46, 0.6);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 2px solid rgba(157, 0, 255, 0.3);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
  font-weight: 600;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background: rgba(0, 32, 46, 0.8);
  border: 2px solid rgba(157, 0, 255, 0.3);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-chlorophyll);
  box-shadow: var(--glow-chlorophyll);
}

.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"] {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--color-chlorophyll);
}

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

/* ============================================
   Interactive Features
   ============================================ */

/* Nutrient Ledger - Particle Dragging */
.water-tank {
  position: relative;
  width: 100%;
  max-width: 600px;
  height: 400px;
  margin: var(--space-xl) auto;
  background: linear-gradient(to bottom, rgba(0, 32, 46, 0.8), rgba(0, 32, 46, 0.4));
  border: 3px solid var(--color-chlorophyll);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--glow-chlorophyll);
}

.particle {
  position: absolute;
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  cursor: grab;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  transition: var(--transition-fast);
  box-shadow: 0 0 20px rgba(15, 255, 80, 0.5);
}

.particle:active {
  cursor: grabbing;
}

.particle.nitrogen {
  background: var(--color-ultraviolet);
  color: var(--color-text);
}

.particle.phosphorus {
  background: var(--color-chlorophyll);
  color: var(--color-abyss);
}

.particle.potassium {
  background: #FFA500;
  color: var(--color-abyss);
}

.digital-plant {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 150px;
  transition: var(--transition-slow);
}

/* Root Gallery - 3D View */
.root-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.root-item {
  position: relative;
  background: rgba(0, 32, 46, 0.6);
  border: 2px solid rgba(157, 0, 255, 0.3);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition-medium);
}

.root-item:hover {
  transform: perspective(1000px) rotateY(5deg) rotateX(5deg);
  box-shadow: var(--glow-ultraviolet);
}

.root-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  transition: var(--transition-medium);
}

/* Spectral Filter Toggle */
.spectral-toggle {
  position: fixed;
  bottom: var(--space-lg);
  left: var(--space-lg);
  z-index: 100;
  background: rgba(0, 32, 46, 0.9);
  border: 2px solid var(--color-ultraviolet);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--glow-ultraviolet);
}

.spectral-toggle-btn {
  background: transparent;
  border: 2px solid var(--color-chlorophyll);
  color: var(--color-chlorophyll);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: var(--font-primary);
  transition: var(--transition-fast);
}

.spectral-toggle-btn:hover {
  background: var(--color-chlorophyll);
  color: var(--color-abyss);
}

.spectral-filter.active {
  filter: hue-rotate(90deg) saturate(1.5);
}

/* Harvest-Ready Slider */
.harvest-slider-container {
  position: relative;
  max-width: 600px;
  margin: var(--space-xl) auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--glow-soft);
}

.harvest-image {
  width: 100%;
  height: auto;
  display: block;
}

.harvest-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-chlorophyll);
  cursor: ew-resize;
  box-shadow: var(--glow-chlorophyll);
  z-index: 10;
}

.harvest-slider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30px;
  height: 30px;
  background: var(--color-chlorophyll);
  border-radius: var(--radius-full);
  box-shadow: var(--glow-chlorophyll);
}

.harvest-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  background: linear-gradient(to right, transparent, rgba(0, 32, 46, 0.7));
  pointer-events: none;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: rgba(0, 32, 46, 0.95);
  border-top: 2px solid var(--color-ultraviolet);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-xxl);
  position: relative;
  z-index: 1;
}

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

.footer-section h4 {
  color: var(--color-chlorophyll);
  margin-bottom: var(--space-md);
  font-size: 1.1rem;
}

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

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

.footer-menu a {
  color: var(--color-text-dim);
  transition: var(--transition-fast);
}

.footer-menu a:hover {
  color: var(--color-chlorophyll);
}

.footer-bottom {
  text-align: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(157, 0, 255, 0.3);
  color: var(--color-text-dim);
  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);
}

.hidden {
  display: none;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
  .container {
    padding: var(--space-md);
  }
  
  .section {
    padding: var(--space-lg) 0;
  }
  
  .hero {
    min-height: 50vh;
    padding: var(--space-lg) var(--space-md);
  }
  
  .grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .spectral-toggle {
    bottom: var(--space-md);
    left: var(--space-md);
    padding: var(--space-sm);
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 14px;
  }
  
  .hero {
    min-height: 40vh;
  }
  
  .water-tank {
    height: 300px;
  }
  
  .particle {
    width: 50px;
    height: 50px;
    font-size: 0.7rem;
  }
}

/* ============================================
   Privacy Popup
   ============================================ */

.privacy-popup {
  position: fixed;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 32, 46, 0.98);
  border: 2px solid var(--color-ultraviolet);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  max-width: 500px;
  width: 90%;
  box-shadow: var(--glow-ultraviolet);
  z-index: 10000;
  animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(100px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.privacy-popup-content {
  margin-bottom: var(--space-md);
}

.privacy-popup-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
}

/* ============================================
   Google Maps
   ============================================ */

.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--color-ultraviolet);
  box-shadow: var(--glow-soft);
  margin: var(--space-xl) 0;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: grayscale(20%) contrast(1.1);
}

/* ============================================
   Page Specific Styles
   ============================================ */

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin: var(--space-xl) 0;
}

.product-card {
  background: rgba(0, 32, 46, 0.6);
  border: 2px solid rgba(157, 0, 255, 0.3);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: var(--transition-medium);
}

.product-card:hover {
  border-color: var(--color-chlorophyll);
  box-shadow: var(--glow-chlorophyll);
  transform: translateY(-10px);
}

.product-price {
  font-size: 1.5rem;
  color: var(--color-chlorophyll);
  font-weight: 700;
  margin-top: var(--space-md);
}

/* 404 Page */
.error-page {
  text-align: center;
  padding: var(--space-xxl) var(--space-lg);
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.error-code {
  font-size: clamp(4rem, 10vw, 8rem);
  color: var(--color-ultraviolet);
  text-shadow: var(--glow-ultraviolet);
  margin-bottom: var(--space-lg);
}

.error-message {
  font-size: clamp(1.2rem, 3vw, 2rem);
  margin-bottom: var(--space-xl);
}

/* Thank You Page */
.thank-you-page {
  text-align: center;
  padding: var(--space-xxl) var(--space-lg);
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.thank-you-icon {
  font-size: 4rem;
  color: var(--color-chlorophyll);
  margin-bottom: var(--space-lg);
  animation: bioPulse var(--pulse-duration) ease-in-out infinite;
}

/* Policy Pages */
.policy-page {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

.policy-page h1 {
  color: var(--color-chlorophyll);
  margin-bottom: var(--space-xl);
}

.policy-page h2 {
  color: var(--color-ultraviolet);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.policy-page .date {
  color: var(--color-text-dim);
  font-style: italic;
  margin-bottom: var(--space-lg);
}