/* ============================================
   Biophilic Interior Design - Main Stylesheet
   ============================================ */

/* CSS Variables */
:root {
  /* Colors - Biophilic Palette */
  --color-fog-white: #F5F7F4;
  --color-deep-forest: #2F4A3B;
  --color-eucalyptus: #C9D4CD;
  --color-moss-gold: #B7A46A;
  --color-stone-charcoal: #2C2A29;
  --color-primary: #2F4A3B;
  --color-secondary: #F5F7F4;
  --color-accent: #B7A46A;
  --color-text: #2C2A29;
  --color-text-light: #6B7A6F;
  --color-bg: #F5F7F4;
  --color-overlay: rgba(47, 74, 59, 0.85);
  
  /* Typography */
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Lato', sans-serif;
  --font-quote: 'Playfair Display', serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;
  
  /* Border & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --border-width: 1px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(47, 74, 59, 0.1);
  --shadow-md: 0 4px 12px rgba(47, 74, 59, 0.15);
  --shadow-lg: 0 8px 24px rgba(47, 74, 59, 0.2);
  --shadow-botanical: 0 4px 20px rgba(47, 74, 59, 0.25);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-breathe: 3s ease-in-out infinite;
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;
  --footer-height: 200px;
}

/* 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-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-deep-forest);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
}

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

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-light);
}

a {
  color: var(--color-deep-forest);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-moss-gold);
}

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

/* Header Styles */
.site-header {
  background: rgba(245, 247, 244, 0.95);
  backdrop-filter: blur(10px);
  padding: var(--space-md) var(--space-lg);
  position: relative;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base);
}

.site-header.hidden {
  transform: translateY(-100%);
}

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

.brand-text {
  font-family: var(--font-heading);
  font-size: clamp(1.3rem, 2vw, 2rem);
  color: var(--color-deep-forest);
  font-weight: 400;
  letter-spacing: 0.5px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  align-items: center;
}

.nav-link {
  font-size: 1rem;
  color: var(--color-text);
  padding: var(--space-sm) var(--space-md);
  position: relative;
  transition: color var(--transition-base);
}

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

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

/* Burger Menu */
.burger-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 10034;
}

.burger-line {
  width: 25px;
  height: 2px;
  background: var(--color-deep-forest);
  transition: all var(--transition-base);
}

.burger-toggle.active .burger-line:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

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

.burger-toggle.active .burger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Main Content */
.main-content {
  min-height: calc(100vh - var(--header-height) - var(--footer-height));
}

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

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

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

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: var(--color-moss-gold);
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xxl) var(--space-lg);
  overflow: hidden;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(245, 247, 244, 0.7) 0%, rgba(201, 212, 205, 0.5) 100%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: var(--space-lg);
  color: var(--color-deep-forest);
  animation: fadeInUp 1s ease;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
  animation: fadeInUp 1.2s ease;
}

.hero-cta {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  background: var(--color-deep-forest);
  color: var(--color-bg);
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  transition: all var(--transition-base);
  animation: fadeInUp 1.4s ease;
}

.hero-cta:hover {
    color: black;
  background: var(--color-moss-gold);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Botanical Overlay */
.botanical-overlay {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.1;
}

.botanical-silhouette {
  position: absolute;
  width: 300px;
  height: 400px;
  background: var(--color-deep-forest);
  mask-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path d="M50 10 Q30 30 20 50 Q10 70 20 90 L80 90 Q90 70 80 50 Q70 30 50 10 Z"/></svg>');
  mask-size: contain;
  mask-repeat: no-repeat;
  animation: float 20s ease-in-out infinite;
}

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

.card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-deep-forest), var(--color-moss-gold));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-botanical);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

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

/* Breathing Animation */
.breathing-element {
  animation: breathe var(--transition-breathe);
}

@keyframes breathe {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.02);
  }
}

/* Fog Overlay */
.fog-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(245, 247, 244, 0.7) 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

/* Image Gallery */
.image-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  aspect-ratio: 4/3;
}

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

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

/* Principles Slider */
.principle-card {
  background: var(--color-bg);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.principle-title {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
  color: var(--color-deep-forest);
}

.principle-description {
  margin-bottom: var(--space-lg);
  color: var(--color-text-light);
}

.slider-container {
  margin: var(--space-lg) 0;
}

.slider-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.slider-input {
  width: 100%;
  height: 6px;
  border-radius: var(--radius-sm);
  background: var(--color-eucalyptus);
  outline: none;
  -webkit-appearance: none;
}

.slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-deep-forest);
  cursor: pointer;
  transition: all var(--transition-base);
}

.slider-input::-webkit-slider-thumb:hover {
  background: var(--color-moss-gold);
  transform: scale(1.2);
}

.mood-indicators {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-md);
  flex-wrap: wrap;
}

.mood-indicator {
  flex: 1;
  min-width: 120px;
  text-align: center;
  padding: var(--space-md);
  background: var(--color-eucalyptus);
  border-radius: var(--radius-md);
}

.mood-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

.mood-value {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-deep-forest);
}

/* Case Study Cards */
.case-study-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.case-study-card:hover {
  box-shadow: var(--shadow-botanical);
  transform: translateY(-5px);
}

.case-study-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  padding: var(--space-md);
}

.case-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.case-content {
  padding: var(--space-xl);
}

.case-goals {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin: var(--space-md) 0;
}

.goal-tag {
  padding: var(--space-xs) var(--space-md);
  background: var(--color-eucalyptus);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--color-deep-forest);
}

/* Plant Library */
.plant-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.plant-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.plant-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(201, 212, 205, 0.3) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.plant-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-botanical);
}

.plant-card:hover::before {
  opacity: 1;
  animation: windShift 2s ease-in-out infinite;
}

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

.plant-card:hover .plant-image {
  transform: scale(1.05) rotate(1deg);
}

.plant-benefit-tags {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
  margin: var(--space-md) 0;
}

.benefit-tag {
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-moss-gold);
  color: var(--color-bg);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.plant-info {
  margin: var(--space-md) 0;
}

.info-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-eucalyptus);
  font-size: 0.9rem;
}

.emotion-score {
  text-align: center;
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: var(--color-eucalyptus);
  border-radius: var(--radius-md);
}

.score-value {
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-deep-forest);
}

/* Contact Form */
.contact-section {
  padding: var(--space-xxl) 0;
}

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

.contact-form {
  background: var(--color-bg);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

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

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

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--color-eucalyptus);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all var(--transition-base);
  background: var(--color-bg);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-deep-forest);
  box-shadow: 0 0 0 3px rgba(47, 74, 59, 0.1);
}

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

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
}

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

.checkbox-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

.submit-button {
  width: 100%;
  padding: var(--space-md) var(--space-xl);
  background: var(--color-deep-forest);
  color: var(--color-bg);
  border: none;
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

.submit-button:hover {
  background: var(--color-moss-gold);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.contact-info {
  background: var(--color-eucalyptus);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
}

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

.info-label {
  font-weight: 600;
  color: var(--color-deep-forest);
  margin-bottom: var(--space-xs);
}

.info-value {
  color: var(--color-text-light);
}

.map-container {
  margin-top: var(--space-xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.map-iframe {
  width: 100%;
  height: 400px;
  border: none;
}

/* Footer */
.site-footer {
  background: var(--color-deep-forest);
  color: var(--color-bg);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-xxl);
}

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

.footer-section h4 {
  color: var(--color-bg);
  margin-bottom: var(--space-md);
}

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

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

.footer-link {
  color: var(--color-eucalyptus);
  transition: color var(--transition-base);
}

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

.footer-bottom {
  text-align: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(245, 247, 244, 0.2);
  color: var(--color-eucalyptus);
}

/* Privacy Popup */
.privacy-popup {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  max-width: 400px;
  background: var(--color-bg);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-botanical);
  z-index: 10000;
  transform: translateY(150%);
  transition: transform var(--transition-slow);
}

.privacy-popup.show {
  transform: translateY(0);
}

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

.popup-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--color-deep-forest);
}

.popup-text {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.popup-buttons {
  display: flex;
  gap: var(--space-md);
}

.popup-button {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.9rem;
  transition: all var(--transition-base);
}

.popup-accept {
  background: var(--color-deep-forest);
  color: var(--color-bg);
}

.popup-accept:hover {
  background: var(--color-moss-gold);
}

.popup-decline {
  background: var(--color-eucalyptus);
  color: var(--color-deep-forest);
}

.popup-decline:hover {
  background: var(--color-text-light);
  color: var(--color-bg);
}

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

.thank-you-content {
  max-width: 600px;
}

.thank-you-icon {
  font-size: 4rem;
  color: var(--color-deep-forest);
  margin-bottom: var(--space-lg);
}

.thank-you-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--space-md);
}

.thank-you-message {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
}

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

.error-code {
  font-size: clamp(4rem, 10vw, 8rem);
  color: var(--color-deep-forest);
  margin-bottom: var(--space-md);
}

.error-message {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--space-lg);
}

.error-description {
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
}

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

@keyframes float {
  0%, 100% {
    transform: translateY(0) translateX(0);
  }
  25% {
    transform: translateY(-20px) translateX(10px);
  }
  50% {
    transform: translateY(-10px) translateX(-10px);
  }
  75% {
    transform: translateY(-15px) translateX(5px);
  }
}

@keyframes windShift {
  0%, 100% {
    transform: rotate(0deg);
  }
  50% {
    transform: rotate(2deg);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --space-xl: 2rem;
    --space-xxl: 3rem;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-xxl) var(--space-lg);
    box-shadow: var(--shadow-lg);
    transition: right var(--transition-base);
    z-index: 1000;
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .burger-toggle {
    display: flex;
  }
  
  .contact-container {
    grid-template-columns: 1fr;
  }
  
  .case-study-images {
    grid-template-columns: 1fr;
  }
  
  .privacy-popup {
    max-width: calc(100% - 2rem);
    right: var(--space-md);
    bottom: var(--space-md);
  }
  
  .hero-section {
    min-height: 50vh;
  }
}

@media (max-width: 480px) {
  :root {
    --space-lg: 1.5rem;
    --space-xl: 1.5rem;
    --space-xxl: 2rem;
  }
  
  .card-grid,
  .plant-grid {
    grid-template-columns: 1fr;
  }
  
  .mood-indicators {
    flex-direction: column;
  }
  
  .mood-indicator {
    min-width: 100%;
  }
}

@media (max-width: 320px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .section {
    padding: var(--space-lg) 0;
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

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

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

.hidden {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}