/* ==========================================================================
   SYSTEM DESIGN TOKENS & AGRI-TECH MODERN THEME
   Sistem Rekomendasi Diversifikasi Produksi Pangan Berbasis KNN
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Color Palette - Premium White & Green Theme */
  --bg-main: #f4f7f5; 
  --bg-card: #ffffff; 
  --bg-card-hover: #f9fbf9;
  --bg-glass: rgba(0, 0, 0, 0.02);
  --bg-glass-heavy: rgba(255, 255, 255, 0.95);
  --bg-input: #ffffff;
  
  --border-color: #a1b0a6; 
  --border-glow: #15803d;
 
  --primary: #15803d; 
  --primary-light: #22c55e;
  --primary-dark: #166534;
  --primary-gradient: linear-gradient(135deg, #15803d 0%, #166534 100%);
  --accent-gold: #d97706;
  --accent-blue: #2563eb;
  --accent-purple: #7c3aed;
  --accent-cyan: #0891b2;

  --text-main: #000000; 
  --text-muted: #1e293b; 
  --text-dim: #475569;

  --status-s1: #15803d; 
  --status-s2: #2563eb; 
  --status-s3: #d97706; 
  --status-n:  #dc2626; 

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Elevation & Effects */
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.12), 0 0 20px rgba(21, 128, 61, 0.08);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(21, 128, 61, 0.04) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(37, 99, 235, 0.03) 0%, transparent 45%);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
  background: #1e3a29;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* Layout System */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  max-width: 1360px;
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

/* Header & Navigation Bar */
.navbar {
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0;
}

.nav-content {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);

  .logo-icon {
    width: 42px;
    height: 42px;
    background: var(--primary-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.4);
  }

  .brand-text {
    display: flex;
    flex-direction: column;
    
    .title {
      font-weight: 800;
      font-size: 1.15rem;
      letter-spacing: -0.5px;
      color: var(--primary-dark);
    }
    .subtitle {
      font-size: 0.75rem;
      color: var(--primary);
      font-weight: 600;
      letter-spacing: 0.5px;
    }
  }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid var(--border-color);
}

/* Glassmorphism Cards */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);

  .card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.6rem;
  }
}

/* Hero Section */
.hero-banner {
  background: linear-gradient(135deg, rgba(21, 128, 61, 0.08) 0%, rgba(22, 101, 52, 0.03) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  margin-bottom: 2.5rem;
  position: relative;
  overflow: hidden;
}

.hero-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(21, 128, 61, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 1rem;
  color: var(--primary-dark);
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 850px;
  margin-bottom: 1.75rem;
}

/* Stat Grid */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.stat-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--primary-light);
}

.stat-info {
  .stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.2;
  }
  .stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
  }
}

/* Form Styling */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.4rem;

  .unit {
    color: var(--text-muted);
    font-weight: 400;
    font-size: 0.8rem;
  }
}

.form-control, .form-select {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-control:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(21, 128, 61, 0.15);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.92rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(21, 128, 61, 0.15);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(21, 128, 61, 0.25);
  background: linear-gradient(135deg, #22c55e 0%, #15803d 100%);
}

.btn-secondary {
  background: rgba(0, 0, 0, 0.03);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(0, 0, 0, 0.06);
  border-color: var(--border-glow);
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
}

.preset-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.table th {
  background: rgba(21, 128, 61, 0.06);
  color: var(--primary);
  font-weight: 700;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  color: var(--text-main);
  vertical-align: middle;
}

.table tbody tr:hover {
  background: rgba(21, 128, 61, 0.02);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 700;
}

.badge-s1 { background: rgba(21, 128, 61, 0.1); color: #15803d; border: 1px solid rgba(21, 128, 61, 0.25); }
.badge-s2 { background: rgba(37, 99, 235, 0.1); color: #2563eb; border: 1px solid rgba(37, 99, 235, 0.25); }
.badge-s3 { background: rgba(217, 119, 6, 0.1); color: #d97706; border: 1px solid rgba(217, 119, 6, 0.25); }
.badge-n  { background: rgba(220, 38, 38, 0.1);  color: #dc2626; border: 1px solid rgba(220, 38, 38, 0.25); }

/* Stepper Tabs for Transparansi Perhitungan */
.stepper-nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.step-tab {
  background: rgba(0, 0, 0, 0.02);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

.step-tab:hover, .step-tab.active {
  background: var(--primary-gradient);
  color: #ffffff;
  border-color: var(--primary-dark);
}

.step-content {
  display: none;
}
.step-content.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Formula Box */
.formula-card {
  background: #f3f4f6;
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--primary);
}

/* Footer */
.footer {
  background: #eaedea;
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  margin-top: 4rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* Leaflet Map Specific Rules */
#mapLocation {
  position: relative;
  height: 380px;
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  z-index: 1;
}
.leaflet-container {
  font-family: var(--font-sans) !important;
  background-color: #e5e7eb !important;
  border-radius: 12px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glow);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-sm);
  color: var(--text-main);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}