/* AgGroGates Seller Portal Design System */

/* ============================================
   CSS Variables (Design Tokens)
   ============================================ */
:root {
  /* Colors - Primary */
  --color-primary-green: #206D17;
  --color-primary-green-700: #227118;
  --color-primary-green-600: #297D1E;
  --color-primary-green-500: #359128;
  --color-primary-green-400: #44AA35;
  --color-sage-light: #A3B18A;
  
  /* Colors - Neutral */
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;
  --color-black: #000000;
  
  /* Colors - Semantic */
  --color-success: #206D17;
  --color-success-light: #D1FAE5;
  --color-success-dark: #065F46;
  --color-error: #DC2626;
  --color-error-light: #FEE2E2;
  --color-error-dark: #991B1B;
  --color-warning: #F59E0B;
  --color-warning-light: #FEF3C7;
  --color-warning-dark: #92400E;
  --color-info: #3B82F6;
  --color-info-light: #DBEAFE;
  --color-info-dark: #1E40AF;
  
  /* Typography */
  --font-family-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  
  /* Spacing */
  --spacing-0: 0;
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;
  --spacing-32: 8rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-default: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.25rem;
  --radius-default: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-default: 150ms ease-in-out;
  --transition-fast: 100ms ease-in-out;
  --transition-slow: 300ms ease-in-out;
}

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

body {
  font-family: var(--font-family-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-gray-700);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */
h1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-gray-900);
}

h2 {
  font-size: 2.25rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--color-gray-800);
}

h3 {
  font-size: 1.875rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-gray-700);
}

h4 {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-gray-700);
}

h5 {
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--color-gray-600);
}

h6 {
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--color-gray-600);
}

p {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-gray-700);
}

/* ============================================
   Layout
   ============================================ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

main {
  min-height: calc(100vh - 160px);
  padding: var(--spacing-8) 0;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  padding: 0 2rem;
  height: 80px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  position: relative;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary-green);
  text-decoration: none;
  transition: var(--transition-default);
}

.nav-brand:hover {
  color: var(--color-primary-green-700);
}

.nav-brand .logo {
  height: 40px;
  width: auto;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-2);
  align-items: center;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: block;
  padding: 0.75rem 1.5rem;
  color: var(--color-gray-700);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 400;
  border-radius: var(--radius-default);
  transition: var(--transition-default);
}

.nav-link:hover {
  background-color: var(--color-gray-50);
  color: var(--color-primary-green);
}

.nav-link.active {
  background-color: var(--color-gray-100);
  color: var(--color-primary-green);
  font-weight: 500;
  border-left: 3px solid var(--color-primary-green);
}

/* Dropdown Menu */
.nav-item.dropdown {
  position: relative;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: var(--color-white);
  min-width: 200px;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  top: 100%;
  right: 0;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-default);
  overflow: hidden;
}

.nav-item.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown-content a {
  color: var(--color-gray-700);
  padding: 0.75rem 1rem;
  text-decoration: none;
  display: block;
  transition: var(--transition-default);
  border-bottom: 1px solid var(--color-gray-100);
}

.dropdown-content a:last-child {
  border-bottom: none;
}

.dropdown-content a:hover {
  background-color: var(--color-gray-50);
  color: var(--color-primary-green);
}

.dropdown-content a.active {
  background-color: var(--color-gray-100);
  color: var(--color-primary-green);
  font-weight: 500;
}

/* Hamburger menu toggle button */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 30px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 10;
}

.hamburger-line {
  width: 100%;
  height: 3px;
  background-color: var(--color-gray-700);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nav-toggle-open .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle-open .hamburger-line:nth-child(2) {
  opacity: 0;
}

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

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-default);
  cursor: pointer;
  transition: var(--transition-default);
  line-height: 1.5;
}

.btn-primary {
  background-color: var(--color-primary-green);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-primary-green-700);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  background-color: var(--color-gray-800);
}

.btn-primary:disabled {
  background-color: var(--color-gray-300);
  color: var(--color-gray-400);
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary-green);
  border: 1px solid var(--color-primary-green);
}

.btn-secondary:hover {
  background-color: var(--color-gray-100);
  border-color: var(--color-primary-green-700);
}

.btn-block {
  display: block;
  width: 100%;
}

/* ============================================
   Forms
   ============================================ */
.form-group {
  margin-bottom: var(--spacing-4);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-2);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  color: var(--color-gray-900);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-default);
  transition: var(--transition-default);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary-green);
  box-shadow: 0 0 0 3px rgba(32, 109, 23, 0.1);
}

.form-control:disabled {
  background-color: var(--color-gray-100);
  color: var(--color-gray-400);
  cursor: not-allowed;
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

/* ============================================
   Cards
   ============================================ */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-default);
  transition: var(--transition-default);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.dashboard-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-default);
}

.dashboard-card h3 {
  margin-bottom: var(--spacing-4);
}

.card-placeholder {
  color: var(--color-gray-500);
  font-style: italic;
}

.stat-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-default);
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary-green);
  margin-top: var(--spacing-2);
}

/* ============================================
   Alerts
   ============================================ */
.alert {
  padding: 1rem 1.5rem;
  border-radius: var(--radius-default);
  border-left: 4px solid;
  margin-bottom: var(--spacing-4);
}

.alert-success {
  background-color: var(--color-success-light);
  border-color: var(--color-success);
  color: var(--color-success-dark);
}

.alert-error {
  background-color: var(--color-error-light);
  border-color: var(--color-error);
  color: var(--color-error-dark);
}

.alert-warning {
  background-color: var(--color-warning-light);
  border-color: var(--color-warning);
  color: var(--color-warning-dark);
}

.alert-info {
  background-color: var(--color-info-light);
  border-color: var(--color-info);
  color: var(--color-info-dark);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
  padding: var(--spacing-20) 0;
  text-align: center;
}

.hero h1 {
  margin-bottom: var(--spacing-4);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-8);
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
  background-color: var(--color-gray-50);
  padding: var(--spacing-8) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.page-header h1 {
  margin-bottom: var(--spacing-2);
}

.subtitle {
  font-size: 1.125rem;
  color: var(--color-gray-600);
}

/* ============================================
   Content Sections
   ============================================ */
.content-section {
  padding: var(--spacing-12) 0;
}

.content-section h2 {
  margin-bottom: var(--spacing-4);
  margin-top: var(--spacing-8);
}

.content-section h2:first-child {
  margin-top: 0;
}

.content-section p {
  margin-bottom: var(--spacing-4);
}

/* ============================================
   Features
   ============================================ */
.features {
  padding: var(--spacing-16) 0;
  background-color: var(--color-white);
}

.features h2 {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-8);
}

.feature-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-default);
  transition: var(--transition-default);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-card h3 {
  margin-bottom: var(--spacing-3);
  color: var(--color-primary-green);
}

/* ============================================
   Process Steps
   ============================================ */
.process-steps {
  list-style: none;
  counter-reset: step-counter;
  padding-left: 0;
}

.process-steps li {
  counter-increment: step-counter;
  margin-bottom: var(--spacing-8);
  padding-left: 3rem;
  position: relative;
}

.process-steps li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0;
  width: 2rem;
  height: 2rem;
  background-color: var(--color-primary-green);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.process-steps h3 {
  margin-bottom: var(--spacing-2);
}

/* ============================================
   Dashboard
   ============================================ */
.dashboard-section {
  padding: var(--spacing-8) 0;
}

.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-8);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-6);
}

/* ============================================
   Contact Form
   ============================================ */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.cta-section {
  text-align: center;
  margin-top: var(--spacing-12);
}

/* ============================================
   Login
   ============================================ */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-gray-50);
  padding: var(--spacing-4);
}

.login-box {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
}

.login-header {
  text-align: center;
  margin-bottom: var(--spacing-8);
}

.login-header .logo {
  height: 60px;
  width: auto;
  margin-bottom: var(--spacing-4);
}

.login-header h2 {
  color: var(--color-gray-900);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background-color: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-200);
  padding: 3rem 2rem;
  margin-top: var(--spacing-16);
}

.footer p {
  text-align: center;
  color: var(--color-gray-600);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
  .navbar {
    padding: 0 1rem;
    height: auto;
    min-height: 60px;
  }

  .nav-container {
    flex-direction: row;
    height: auto;
    padding: var(--spacing-3) 0;
    gap: var(--spacing-3);
  }

  .nav-brand {
    flex: 1;
    text-align: left;
    padding: var(--spacing-2) 0;
    font-size: 0.9rem;
  }

  .nav-brand .logo {
    height: 30px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    width: 100%;
    gap: 0;
    margin-top: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    z-index: 1000;
  }

  .nav-menu-open {
    max-height: 500px;
    opacity: 1;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    width: 100%;
    text-align: left;
    padding: var(--spacing-3) var(--spacing-4);
    border-left: none;
    border-bottom: 1px solid var(--color-gray-200);
  }

  .nav-link.active {
    border-left: none;
    border-bottom: 3px solid var(--color-primary-green);
  }

  /* Mobile dropdown styles */
  .nav-item.dropdown .dropdown-content {
    position: static;
    display: none;
    box-shadow: none;
    border: none;
    border-top: 1px solid var(--color-gray-200);
    border-radius: 0;
  }

  .nav-item.dropdown:hover .dropdown-content {
    display: none;
  }

  .nav-item.dropdown.active .dropdown-content {
    display: block;
  }

  .dropdown-content a {
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 1px solid var(--color-gray-200);
  }

  .container {
    padding: 0 1rem;
  }

  .page-header {
    padding: var(--spacing-4) 0;
  }
  
  h1 {
    font-size: 1.75rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.5rem;
  }
  
  main {
    padding: var(--spacing-4) 0;
  }
  
  .hero {
    padding: var(--spacing-8) 0;
  }
  
  .feature-grid,
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 0.75rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  .page-header {
    padding: var(--spacing-3) 0;
  }
}

/* ============================================
   Utilities
   ============================================ */
.text-center {
  text-align: center;
}

.mt-4 {
  margin-top: var(--spacing-4);
}

.mb-4 {
  margin-bottom: var(--spacing-4);
}