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

:root {
  /* Warna Tema Kelapa Sawit */
  --palm-green-dark: #1e3a0f; /* Hijau tua daun sawit */
  --palm-green-medium: #2d5016; /* Hijau sedang */
  --palm-green-light: #4ade80; /* Hijau muda */
  --palm-brown-dark: #7c2d12; /* Coklat tua batang */
  --palm-brown-medium: #a16207; /* Coklat sedang */
  --palm-gold: #fbbf24; /* Kuning emas buah sawit */
  --palm-cream: #fef3c7; /* Krim lembut */
  --palm-orange: #fb923c; /* Oranye buah sawit masak */
  --white: #ffffff;
  --gray: #f5f5f5;
  --text-dark: #333333;
  --text-light: #666666;

  /* Dark Mode Colors */
  --dark-bg: #1a1a1a;
  --dark-surface: #2d2d2d;
  --dark-text: #ffffff;
  --dark-text-secondary: #b0b0b0;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition: all 0.3s ease;
}

body {
  font-family: "Inter", sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--white);
  transition: var(--transition);
}

body.dark-mode {
  background-color: var(--dark-bg);
  color: var(--dark-text);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* Section Styles */
.section {
  padding: var(--spacing-xl) 0;
}

.section-gray {
  background-color: var(--gray);
}

body.dark-mode .section-gray {
  background-color: var(--dark-surface);
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--palm-green-medium);
  margin-bottom: var(--spacing-lg);
}

body.dark-mode .section-title {
  color: var(--palm-green-light);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: var(--transition);
}

body.dark-mode .navbar {
  background: rgba(26, 26, 26, 0.95);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-img {
  height: 40px;
  width: auto;
  border-radius: var(--radius-sm);
}

.nav-logo h2 {
  color: var(--palm-green-medium);
  font-weight: 700;
  font-size: 1.5rem;
}

body.dark-mode .nav-logo h2 {
  color: var(--palm-green-light);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xs);
  margin-left: var(--spacing-md);
}

.nav-link {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

body.dark-mode .nav-link {
  color: var(--dark-text);
}

.nav-link:hover,
.nav-link.active {
  color: var(--palm-green-medium);
  background-color: rgba(74, 222, 128, 0.1);
}

body.dark-mode .nav-link:hover,
body.dark-mode .nav-link.active {
  color: var(--palm-green-light);
  background-color: rgba(74, 222, 128, 0.2);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.bar {
  width: 25px;
  height: 3px;
  background-color: var(--text-dark);
  margin: 3px 0;
  transition: var(--transition);
}

body.dark-mode .bar {
  background-color: var(--dark-text);
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  padding: var(--spacing-xs);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.theme-toggle:hover {
  background-color: rgba(74, 222, 128, 0.1);
}

/* Hero Section */
.hero {
  background: linear-gradient(
    135deg,
    var(--palm-green-dark),
    var(--palm-green-medium)
  );
  color: var(--white);
  padding: calc(70px + var(--spacing-xl)) 0 var(--spacing-xl);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-content {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.hero-title {
  font-size: 4rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 1.8rem;
  font-weight: 500;
  margin-bottom: var(--spacing-md);
  opacity: 0.9;
}

.hero-description {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
  opacity: 0.8;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  max-width: 600px;
  margin: 0 auto;
}

.stat-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--palm-gold);
  color: var(--palm-green-dark);
}

.btn-primary:hover {
  background-color: var(--palm-orange);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn-secondary:hover {
  background-color: var(--white);
  color: var(--palm-green-medium);
}

.btn-danger {
  background-color: #e74c3c;
  color: var(--white);
}

.btn-danger:hover {
  background-color: #c0392b;
}

/* About Section */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.about-text h3 {
  font-size: 1.8rem;
  color: var(--palm-green-medium);
  margin-bottom: var(--spacing-md);
}

body.dark-mode .about-text h3 {
  color: var(--palm-green-light);
}

.about-text p {
  margin-bottom: var(--spacing-md);
  color: var(--text-light);
  line-height: 1.8;
}

body.dark-mode .about-text p {
  color: var(--dark-text-secondary);
}

.about-features {
  margin-top: var(--spacing-lg);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.feature-icon {
  font-size: 2rem;
  min-width: 50px;
}

.feature-item h4 {
  color: var(--palm-green-medium);
  margin-bottom: var(--spacing-xs);
}

body.dark-mode .feature-item h4 {
  color: var(--palm-green-light);
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--text-light);
}

body.dark-mode .feature-item p {
  color: var(--dark-text-secondary);
}

.about-image {
  display: flex;
  justify-content: center;
}

.image-placeholder {
  background: linear-gradient(
    135deg,
    var(--palm-green-light),
    var(--palm-green-medium)
  );
  color: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  text-align: center;
  font-size: 4rem;
  box-shadow: var(--shadow-lg);
}

.image-placeholder p {
  margin-top: var(--spacing-md);
  font-size: 1.1rem;
  font-weight: 600;
}

/* Filter Container */
.filter-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 400px;
}

.search-box input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-sm)
    var(--spacing-lg);
  border: 2px solid #e0e0e0;
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: var(--transition);
}

body.dark-mode .search-box input {
  background-color: var(--dark-surface);
  border-color: #444;
  color: var(--dark-text);
}

.search-box input:focus {
  outline: none;
  border-color: var(--palm-green-medium);
}

.search-icon {
  position: absolute;
  right: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
}

.filter-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

.filter-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  border: 2px solid var(--palm-green-medium);
  background: transparent;
  color: var(--palm-green-medium);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}

.filter-btn.active,
.filter-btn:hover {
  background-color: var(--palm-green-medium);
  color: var(--white);
}

/* Waste Grid */
.waste-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.waste-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 2px solid transparent;
}

body.dark-mode .waste-card {
  background: var(--dark-surface);
}

.waste-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--palm-green-medium);
}

.waste-card.hidden {
  display: none;
}

.waste-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.waste-name {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--palm-green-medium);
}

body.dark-mode .waste-name {
  color: var(--palm-green-light);
}

.waste-category {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
}

.category-padat {
  background-color: rgba(124, 45, 18, 0.1);
  color: var(--palm-brown-dark);
}

.category-cair {
  background-color: rgba(33, 150, 243, 0.1);
  color: #2196f3;
}

.waste-description {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

body.dark-mode .waste-description {
  color: var(--dark-text-secondary);
}

.waste-properties {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.property-tag {
  background-color: var(--gray);
  color: var(--text-dark);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

body.dark-mode .property-tag {
  background-color: #444;
  color: var(--dark-text);
}

/* Utilization Grid */
.utilization-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

@media (min-width: 1200px) {
  .utilization-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.utilization-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

body.dark-mode .utilization-card {
  background: var(--dark-surface);
}

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

.utilization-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.utilization-card h3 {
  color: var(--palm-green-medium);
  margin-bottom: var(--spacing-md);
}

body.dark-mode .utilization-card h3 {
  color: var(--palm-green-light);
}

.utilization-card p {
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

body.dark-mode .utilization-card p {
  color: var(--dark-text-secondary);
}

.utilization-benefits {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  justify-content: center;
}

.benefit-tag {
  background-color: rgba(74, 222, 128, 0.1);
  color: var(--palm-green-medium);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
}

/* Simulation Container */
.simulation-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.simulation-form,
.simulation-result {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

body.dark-mode .simulation-form,
body.dark-mode .simulation-result {
  background: var(--dark-surface);
}

.simulation-form h3,
.simulation-result h3 {
  color: var(--palm-green-medium);
  margin-bottom: var(--spacing-md);
}

body.dark-mode .simulation-form h3,
body.dark-mode .simulation-result h3 {
  color: var(--palm-green-light);
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--text-dark);
}

body.dark-mode .form-group label {
  color: var(--dark-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid #e0e0e0;
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: var(--transition);
}

body.dark-mode .form-group input,
body.dark-mode .form-group select,
body.dark-mode .form-group textarea {
  background-color: var(--dark-surface);
  border-color: #444;
  color: var(--dark-text);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--palm-green-medium);
}

.form-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.result-placeholder {
  text-align: center;
  color: var(--text-light);
  padding: var(--spacing-lg);
}

body.dark-mode .result-placeholder {
  color: var(--dark-text-secondary);
}

.result-item {
  background: var(--gray);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

body.dark-mode .result-item {
  background: #444;
}

.result-item h4 {
  color: var(--palm-green-medium);
  margin-bottom: var(--spacing-xs);
}

body.dark-mode .result-item h4 {
  color: var(--palm-green-light);
}

/* Monitoring Container */
.monitoring-container {
  display: grid;
  gap: var(--spacing-xl);
}

.monitoring-input,
.monitoring-table,
.monitoring-chart {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

body.dark-mode .monitoring-input,
body.dark-mode .monitoring-table,
body.dark-mode .monitoring-chart {
  background: var(--dark-surface);
}

.monitoring-input h3,
.monitoring-table h3,
.monitoring-chart h3 {
  color: var(--palm-green-medium);
  margin-bottom: var(--spacing-md);
}

body.dark-mode .monitoring-input h3,
body.dark-mode .monitoring-table h3,
body.dark-mode .monitoring-chart h3 {
  color: var(--palm-green-light);
}

/* Table Styles */
.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--spacing-md);
}

th,
td {
  padding: var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid #e0e0e0;
}

body.dark-mode th,
body.dark-mode td {
  border-bottom-color: #444;
}

th {
  background-color: var(--gray);
  font-weight: 600;
  color: var(--palm-green-medium);
}

body.dark-mode th {
  background-color: #444;
  color: var(--palm-green-light);
}

.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-light);
}

body.dark-mode .empty-state {
  color: var(--dark-text-secondary);
}

.delete-btn {
  background-color: #e74c3c;
  color: var(--white);
  border: none;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.delete-btn:hover {
  background-color: #c0392b;
}

/* Chart Styles */
.chart-container {
  position: relative;
  height: 300px;
  margin-top: var(--spacing-md);
}

.chart {
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 100%;
  border-left: 2px solid #e0e0e0;
  border-bottom: 2px solid #e0e0e0;
  padding: var(--spacing-sm);
}

body.dark-mode .chart {
  border-color: #444;
}

.bar {
  width: 60px;
  background: linear-gradient(
    to top,
    var(--palm-green-medium),
    var(--palm-green-light)
  );
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transition: var(--transition);
  position: relative;
  cursor: pointer;
}

.bar:hover {
  opacity: 0.8;
  transform: scaleY(1.05);
}

.bar-label {
  position: absolute;
  bottom: -25px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8rem;
  white-space: nowrap;
}

.bar-value {
  position: absolute;
  top: -25px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--palm-green-medium);
}

body.dark-mode .bar-value {
  color: var(--palm-green-light);
}

/* Gallery Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

@media (min-width: 1200px) {
  .gallery-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
}

.gallery-item:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

.gallery-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: var(--white);
  padding: var(--spacing-md);
  transform: translateY(100%);
  transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
  transform: translateY(0);
}

/* Contact Container */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.contact-info,
.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

body.dark-mode .contact-info,
body.dark-mode .contact-form {
  background: var(--dark-surface);
}

.contact-info h3,
.contact-form h3 {
  color: var(--palm-green-medium);
  margin-bottom: var(--spacing-md);
}

body.dark-mode .contact-info h3,
body.dark-mode .contact-form h3 {
  color: var(--palm-green-light);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-icon {
  font-size: 1.5rem;
  min-width: 30px;
}

.contact-item h4 {
  color: var(--palm-green-medium);
  margin-bottom: var(--spacing-xs);
}

body.dark-mode .contact-item h4 {
  color: var(--palm-green-light);
}

.contact-item p {
  color: var(--text-light);
}

body.dark-mode .contact-item p {
  color: var(--dark-text-secondary);
}

/* Footer */
.footer {
  background-color: var(--palm-green-dark);
  color: var(--white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h3,
.footer-section h4 {
  margin-bottom: var(--spacing-md);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--spacing-xs);
}

.footer-section a {
  color: var(--white);
  text-decoration: none;
  transition: var(--transition);
}

.footer-section a:hover {
  color: var(--palm-gold);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-links a {
  font-size: 1.5rem;
  transition: var(--transition);
}

.social-links a:hover {
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  opacity: 0.8;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  animation: fadeIn 0.3s;
}

.modal-content {
  position: relative;
  margin: 5% auto;
  max-width: 800px;
  background-color: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

body.dark-mode .modal-content {
  background-color: var(--dark-surface);
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 35px;
  color: var(--text-light);
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition);
}

body.dark-mode .modal-close {
  color: var(--dark-text);
}

.modal-close:hover {
  color: var(--text-dark);
}

.modal-image {
  width: 100%;
  max-height: 500px;
  object-fit: contain;
}

.modal-caption {
  padding: var(--spacing-lg);
  text-align: center;
}

/* Notification */
.notification {
  position: fixed;
  top: 100px;
  right: -400px;
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  z-index: 3000;
  max-width: 350px;
}

body.dark-mode .notification {
  background: var(--dark-surface);
}

.notification.show {
  right: var(--spacing-md);
}

.notification-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.notification-icon {
  font-size: 1.5rem;
}

.notification-message {
  flex: 1;
  color: var(--text-dark);
}

body.dark-mode .notification-message {
  color: var(--dark-text);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideIn {
  from {
    transform: translateY(-20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--white);
    width: 100%;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-lg) 0;
  }

  body.dark-mode .nav-menu {
    background-color: var(--dark-surface);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 3rem;
  }

  .hero-subtitle {
    font-size: 1.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .about-content {
    grid-template-columns: 1fr;
  }

  .simulation-container {
    grid-template-columns: 1fr;
  }

  .contact-container {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .filter-container {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box {
    max-width: none;
  }

  .filter-buttons {
    justify-content: center;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .waste-grid,
  .utilization-grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .social-links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-xs);
  }

  .section {
    padding: var(--spacing-lg) 0;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.3rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .stat-card {
    padding: var(--spacing-sm);
  }

  .stat-number {
    font-size: 2rem;
  }

  .waste-card,
  .utilization-card,
  .simulation-form,
  .simulation-result,
  .monitoring-input,
  .monitoring-table,
  .monitoring-chart,
  .contact-info,
  .contact-form {
    padding: var(--spacing-md);
  }
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Loading State */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray);
}

body.dark-mode ::-webkit-scrollbar-track {
  background: var(--dark-surface);
}

::-webkit-scrollbar-thumb {
  background: var(--palm-green-medium);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--palm-brown-medium);
}