/* AgriSens Smart Farming Website CSS */

/* Import Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

/* CSS Variables */
:root {
  --primary-green: #2d5a27;
  --secondary-green: #4a7c59;
  --accent-green: #6ab04c;
  --light-green: #7bed9f;
  --dark-green: #1e3a1a;
  --earth-brown: #8b4513;
  --warm-yellow: #f39c12;
  --sky-blue: #3498db;
  --white: #ffffff;
  --light-gray: #f8f9fa;
  --medium-gray: #6c757d;
  --dark-gray: #343a40;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-dark: rgba(0, 0, 0, 0.2);
  --gradient-green: linear-gradient(135deg, #2d5a27, #4a7c59, #6ab04c);
  --gradient-earth: linear-gradient(135deg, #8b4513, #a0522d, #cd853f);
  --gradient-disease: linear-gradient(135deg, #e74c3c, #c0392b, #8b0000);
}

/* Global Styles */
* {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  outline: none;
  border: none;
  text-decoration: none;
  text-transform: capitalize;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*::selection {
  background: var(--accent-green);
  color: var(--white);
}

html {
  font-size: 62.5%;
  overflow-x: hidden;
  scroll-padding-top: 9rem;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  will-change: scroll-position;
  backface-visibility: hidden;
  transform: translateZ(0);
  perspective: 1000;
}

body {
  background: var(--white);
  line-height: 1.6;
  color: var(--dark-gray);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--gradient-green);
  border-radius: 50px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--dark-green);
}
/* Header Styles */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2rem 7%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(45, 90, 39, 0.1);
  box-shadow: 0 2px 20px var(--shadow);
}

.header.active {
  background: var(--white);
  box-shadow: 0 2px 30px var(--shadow-dark);
}

.header .logo h1 {
  font-size: 3.5rem;
  color: var(--primary-green);
  font-weight: 700;
  background: var(--gradient-green);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 2px 4px var(--shadow);
}

.header .navbar a {
  font-size: 1.7rem;
  margin: 0 1rem;
  color: var(--dark-gray);
  font-weight: 500;
  position: relative;
  padding: 0.5rem 1rem;
  text-decoration: none;
  transition: all 0.3s ease;
}

.header .navbar a:hover,
.header .navbar a.active {
  color: var(--primary-green);
}

.header .navbar a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: var(--gradient-green);
  transform: translateX(-50%);
  transition: width 0.3s ease;
}

.header .navbar a:hover::before,
.header .navbar a.active::before {
  width: 100%;
}

.header .navbar .btn {
  background: var(--gradient-green);
  color: var(--white);
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-weight: 600;
  margin-left: 1rem;
  box-shadow: 0 4px 15px rgba(45, 90, 39, 0.3);
}

.header .navbar .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(45, 90, 39, 0.4);
}

.header .navbar .btn.active {
  background: var(--dark-green);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(45, 90, 39, 0.4);
}

#menu-btn {
  font-size: 2.5rem;
  cursor: pointer;
  color: var(--primary-green);
  display: none;
}

/* Mobile Navigation */
@media (max-width: 991px) {
  html {
    font-size: 55%;
  }

  .header {
    padding: 2rem;
  }
}

@media (max-width: 768px) {
  #menu-btn {
    display: inline-block;
  }

  .header .navbar {
    position: absolute;
    top: 115%;
    right: 7%;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    width: 30rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    background: var(--white);
    transform: scale(0);
    opacity: 0;
    transform-origin: top right;
    transition: none;
  }

  .header .navbar.active {
    transform: scale(1);
    opacity: 1;
    padding: 2rem;
    transition: 0.2s ease-out;
  }

  .header .navbar a {
    color: var(--dark-gray);
    display: block;
    margin: 1.5rem 0;
    padding: 0.5rem;
    font-size: 2rem;
  }

  .header .navbar .btn {
    background: var(--gradient-green);
    border-radius: 5px;
    color: var(--white);
    margin-top: 2rem;
    text-align: center;
  }
}

@media (max-width: 450px) {
  html {
    font-size: 50%;
  }
}

.logo-container .logo {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-green);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo i {
  color: var(--accent-green);
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--dark-gray);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 25px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.main-nav a:hover,
.main-nav a.active {
  background: var(--gradient-green);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(45, 90, 39, 0.3);
}

/* Page Banner */
.page-banner {
  background: var(--gradient-green);
  color: var(--white);
  text-align: center;
  padding: 12rem 5% 6rem;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.page-banner h1 {
  font-size: 4rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-shadow: 0 2px 4px var(--shadow-dark);
  position: relative;
  z-index: 2;
}

.page-banner p {
  font-size: 1.8rem;
  opacity: 0.9;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.disease-banner {
  background: var(--gradient-green);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Responsive Design for Page Banner */
@media (max-width: 768px) {
  .page-banner {
    padding: 10rem 5% 5rem;
  }
  
  .page-banner h1 {
    font-size: 3rem;
  }
  
  .page-banner p {
    font-size: 1.6rem;
    max-width: 90%;
  }
}

@media (max-width: 450px) {
  .page-banner {
    padding: 9rem 5% 4rem;
  }
  
  .page-banner h1 {
    font-size: 2.5rem;
  }
  
  .page-banner p {
    font-size: 1.4rem;
  }
}

/* Card Styles */
.card {
  background: var(--white);
  border-radius: 15px;
  box-shadow: 0 8px 30px var(--shadow);
  padding: 3rem;
  margin: 3rem 0;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-green);
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px var(--shadow-dark);
}

.card-icon {
  display: inline-block;
  width: 8rem;
  height: 8rem;
  background: var(--gradient-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  font-size: 3rem;
  color: var(--white);
  box-shadow: 0 5px 15px rgba(45, 90, 39, 0.3);
}

.card-content h2 {
  color: var(--primary-green);
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.card-content p {
  font-size: 1.6rem;
  line-height: 1.8;
  color: var(--medium-gray);
}

/* Responsive Card Styles */
@media (max-width: 768px) {
  .card {
    padding: 2.5rem;
    margin: 2rem 0;
  }
  
  .card-icon {
    width: 7rem;
    height: 7rem;
    font-size: 2.5rem;
  }
  
  .card-content h2 {
    font-size: 2.2rem;
  }
  
  .card-content p {
    font-size: 1.4rem;
  }
}

@media (max-width: 450px) {
  .card {
    padding: 2rem;
    margin: 1.5rem 0;
  }
  
  .card-icon {
    width: 6rem;
    height: 6rem;
    font-size: 2.2rem;
  }
  
  .card-content h2 {
    font-size: 2rem;
  }
  
  .card-content p {
    font-size: 1.3rem;
  }
}

/* Table Card */
.table-card {
  padding: 2.5rem;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.card-header h3 {
  color: var(--primary-green);
  font-size: 2.2rem;
  font-weight: 600;
}

.search-container {
  position: relative;
  max-width: 350px;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 1rem 1.5rem 1rem 4rem;
  border: 2px solid var(--light-gray);
  border-radius: 50px;
  font-size: 1.4rem;
  transition: all 0.3s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-green);
  box-shadow: 0 0 0 3px rgba(106, 176, 76, 0.2);
}

.search-icon {
  position: absolute;
  left: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--medium-gray);
  font-size: 1.6rem;
}

/* Table Styles */
.table-responsive {
  overflow-x: auto;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

#crop-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1.4rem;
  background: var(--white);
}

#crop-table thead {
  background: var(--gradient-green);
}

#crop-table th {
  padding: 1.5rem 1.5rem;
  color: var(--white);
  font-weight: 600;
  text-align: left;
  font-size: 1.5rem;
  white-space: nowrap;
}

#crop-table td {
  padding: 1.2rem 1.5rem;
  border-bottom: 1px solid var(--light-gray);
  color: var(--dark-gray);
  white-space: nowrap;
}

#crop-table tr:hover {
  background-color: rgba(106, 176, 76, 0.05);
}

/* Responsive Table Styles */
@media (max-width: 768px) {
  .table-card {
    padding: 2rem;
  }
  
  .card-header h3 {
    font-size: 2rem;
  }
  
  .search-input {
    padding: 0.8rem 1.2rem 0.8rem 3.5rem;
    font-size: 1.3rem;
  }
  
  .search-icon {
    left: 1.2rem;
    font-size: 1.4rem;
  }
  
  #crop-table {
    font-size: 1.3rem;
  }
  
  #crop-table th {
    padding: 1.2rem 1.2rem;
    font-size: 1.4rem;
  }
  
  #crop-table td {
    padding: 1rem 1.2rem;
  }
}

@media (max-width: 450px) {
  .table-card {
    padding: 1.5rem;
  }
  
  .card-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .card-header h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
  }
  
  .search-container {
    max-width: 100%;
  }
  
  #crop-table {
    font-size: 1.2rem;
  }
  
  #crop-table th {
    padding: 1rem;
    font-size: 1.3rem;
  }
  
  #crop-table td {
    padding: 0.8rem 1rem;
  }
}

#crop-table tbody tr:hover {
  background: rgba(106, 176, 76, 0.1);
}

#crop-table tbody tr:nth-child(even) {
  background: rgba(248, 249, 250, 0.5);
}

/* Process Section */
.process-section {
  background: var(--light-gray);
  padding: 8rem 0;
  text-align: center;
}

.process-section h2 {
  color: var(--primary-green);
  font-size: 3.5rem;
  margin-bottom: 4rem;
  font-weight: 700;
  position: relative;
  display: inline-block;
}

.process-section h2::after {
  content: '';
  position: absolute;
  bottom: -1rem;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gradient-green);
  border-radius: 2px;
}

.process-steps {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.process-step {
  background: var(--white);
  border-radius: 15px;
  padding: 3rem 2.5rem;
  width: 320px;
  box-shadow: 0 8px 30px var(--shadow);
  position: relative;
  transition: all 0.3s ease;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.process-step:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px var(--shadow-dark);
}

.step-number {
  position: absolute;
  top: -25px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-green);
  color: var(--white);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(45, 90, 39, 0.3);
}

.step-icon {
  font-size: 3.5rem;
  color: var(--accent-green);
  margin-bottom: 2rem;
  margin-top: 1.5rem;
}

.process-step h3 {
  color: var(--primary-green);
  font-size: 2rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.process-step p {
  color: var(--medium-gray);
  font-size: 1.5rem;
  line-height: 1.6;
}

/* Responsive Process Section */
@media (max-width: 768px) {
  .process-section {
    padding: 6rem 0;
  }
  
  .process-section h2 {
    font-size: 3rem;
    margin-bottom: 3.5rem;
  }
  
  .process-step {
    padding: 2.5rem 2rem;
    width: 280px;
  }
  
  .step-icon {
    font-size: 3rem;
  }
  
  .process-step h3 {
    font-size: 1.8rem;
  }
  
  .process-step p {
    font-size: 1.4rem;
  }
}

@media (max-width: 450px) {
  .process-section {
    padding: 5rem 0;
  }
  
  .process-section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
  }
  
  .process-steps {
    gap: 4rem;
  }
  
  .process-step {
    width: 100%;
    max-width: 300px;
  }
  
  .step-icon {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
  }
  
  .process-step h3 {
    font-size: 1.7rem;
  }
  
  .process-step p {
    font-size: 1.3rem;
  }
}

/* Process Mini (for disease detection) */
.process-mini {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.process-mini-step {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--light-gray);
  border-radius: 10px;
  transition: all 0.3s ease;
}

.process-mini-step:hover {
  background: rgba(106, 176, 76, 0.1);
  transform: translateX(10px);
}

.mini-step-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.mini-step-content h3 {
  color: var(--primary-green);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.mini-step-content p {
  color: var(--medium-gray);
  line-height: 1.6;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.feature {
  text-align: center;
  padding: 2rem;
  background: var(--light-gray);
  border-radius: 10px;
  transition: all 0.3s ease;
}

.feature:hover {
  background: rgba(106, 176, 76, 0.1);
  transform: translateY(-5px);
}

.feature-icon {
  width: 70px;
  height: 70px;
  background: var(--gradient-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 2rem;
  color: var(--white);
}

.feature h3 {
  color: var(--primary-green);
  font-size: 1.3rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.feature p {
  color: var(--medium-gray);
  line-height: 1.6;
}

/* About Section */
.about-section {
  background: var(--light-gray);
  padding: 6rem 5%;
}

.dataset-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.dataset-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--white);
  border-radius: 10px;
  box-shadow: 0 4px 15px var(--shadow);
}

.dataset-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.dataset-text {
  color: var(--dark-gray);
  font-weight: 500;
}

/* Link Styles */
.link {
  color: var(--accent-green);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.link:hover {
  color: var(--primary-green);
  text-decoration: underline;
}

/* Footer */
.main-footer {
  background: var(--dark-green);
  color: var(--white);
  padding: 5rem 0 2rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.footer-logo {
  font-size: 3rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-logo i {
  color: var(--accent-green);
  font-size: 3.5rem;
}

.footer-links {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  font-size: 1.6rem;
  position: relative;
}

.footer-links a:hover {
  color: var(--accent-green);
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-green);
  transition: width 0.3s ease;
}

.footer-links a:hover::after {
  width: 100%;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.4rem;
}

/* Responsive Footer */
@media (max-width: 768px) {
  .main-footer {
    padding: 4rem 0 2rem;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }
  
  .footer-logo {
    justify-content: center;
  }
  
  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 450px) {
  .footer-links {
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
  }
  
  .footer-links a {
    font-size: 1.5rem;
  }
  
  .footer-bottom p {
    font-size: 1.2rem;
  }
}

/* Scroll to Top Button */
.scroll-top-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--gradient-green);
  color: var(--white);
  width: 5rem;
  height: 5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  cursor: pointer;
  box-shadow: 0 4px 15px var(--shadow-dark);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 999;
  border: none;
}

.scroll-top-btn.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top-btn:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px var(--shadow-dark);
}

@media (max-width: 768px) {
  .scroll-top-btn {
    width: 4.5rem;
    height: 4.5rem;
    bottom: 20px;
    right: 20px;
  }
}

@media (max-width: 450px) {
  .scroll-top-btn {
    width: 4rem;
    height: 4rem;
    font-size: 1.8rem;
    bottom: 15px;
    right: 15px;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .main-header {
    flex-direction: column;
    padding: 1rem 2rem;
  }

  .main-nav ul {
    gap: 1rem;
    margin-top: 1rem;
  }

  .page-banner {
    padding: 10rem 2rem 4rem;
  }

  .page-banner h1 {
    font-size: 2.5rem;
  }

  .container {
    padding: 0 1rem;
  }

  .card {
    padding: 2rem;
  }

  .card-header {
    flex-direction: column;
    align-items: stretch;
  }

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

  .process-steps {
    grid-template-columns: 1fr;
  }

  .process-section {
    padding: 4rem 2rem;
  }

  .process-section h2 {
    font-size: 2.5rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .dataset-info {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

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

@media (max-width: 480px) {
  .main-nav ul {
    flex-direction: column;
    gap: 0.5rem;
  }

  .page-banner h1 {
    font-size: 2rem;
  }

  .card-content h2 {
    font-size: 2rem;
  }

  .process-section h2 {
    font-size: 2rem;
  }

  .table-responsive {
    font-size: 0.8rem;
  }

  .scroll-top-btn {
    width: 45px;
    height: 45px;
    font-size: 1rem;
  }
}

/* Loading Animation */
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading {
  border: 3px solid var(--light-gray);
  border-top: 3px solid var(--accent-green);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 2rem auto;
}

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

.fade-in-up {
  animation: fadeInUp 0.8s ease-out;
}