/* =============================================
   SMART AGRONOMY RESEARCH TEAM — Design System
   Fonts: Merriweather (headings) + Source Sans 3 (body)
   Colors: Navy blue primary palette
   ============================================= */

/* CSS Reset & Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Primary Colors — Deep Forest Green */
  --primary: #1a5632;
  --primary-light: #237a45;
  --primary-dark: #0d2e1a;
  --primary-foreground: #ffffff;

  /* Accent — Golden Amber */
  --accent: #c8860a;
  --accent-light: #e6a817;
  --accent-dark: #a06d08;
  --accent-foreground: #ffffff;

  /* Backgrounds */
  --background: #fffcf8;
  --background-muted: #faf6f1;
  --background-subtle: #fffcf8;

  /* Text */
  --foreground: #0a0a0a;
  --text-primary: #1a2e1f;
  --text-secondary: #4a6355;
  --text-muted: #7a9488;

  /* Borders & Shadows */
  --border: #e8dfd4;
  --border-light: #f0ebe4;
  --ring: #1a5632;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 6px 12px -2px rgba(0, 0, 0, 0.1), 0 3px 7px -3px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.1), 0 4px 10px -4px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 20px 40px -5px rgba(0, 0, 0, 0.15), 0 8px 15px -6px rgba(0, 0, 0, 0.1);

  /* Radius */
  --radius-sm: 0.375rem;
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Fonts */
  --font-sans: "Source Sans 3", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: "Merriweather", Georgia, serif;

  /* Transitions */
  --transition: 0.2s ease;
  --transition-slow: 0.3s ease;

  /* Spacing */
  --container-max: 1440px;
  --container-padding: 2rem;

  /* Status Colors */
  --success: #16a34a;
  --warning: #f59e0b;
  --error: #dc2626;
  --info: #0284c7;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--background);
  line-height: 1.7;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  color: var(--primary);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-dark);
}

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

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

/* =============================================
   UTILITY CLASSES
   ============================================= */

.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;
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes countUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
  opacity: 0;
}

.animate-fade-in {
  animation: fadeIn 0.4s ease forwards;
  opacity: 0;
}

/* Staggered delays */
.delay-1 {
  animation-delay: 0.1s;
}

.delay-2 {
  animation-delay: 0.2s;
}

.delay-3 {
  animation-delay: 0.3s;
}

.delay-4 {
  animation-delay: 0.4s;
}

.delay-5 {
  animation-delay: 0.5s;
}

.delay-6 {
  animation-delay: 0.6s;
}

/* Intersection Observer animation trigger */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Button Base */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1.5;
}

.btn:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-foreground);
  border-color: var(--primary);
}

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

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--border);
}

.btn-outline:hover {
  background: var(--background-muted);
  border-color: var(--primary);
  color: var(--primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
  padding: 0.5rem 1rem;
}

.btn-ghost:hover {
  background: var(--background-muted);
  color: var(--primary);
}

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: 1.0625rem;
}

.btn-sm {
  padding: 0.375rem 1rem;
  font-size: 0.8125rem;
}

.btn-hero-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-hero-outline:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  border: 1px solid;
}

.badge-primary {
  background: rgba(26, 86, 50, 0.08);
  color: var(--primary);
  border-color: rgba(26, 86, 50, 0.15);
}

.badge-accent {
  background: rgba(200, 134, 10, 0.08);
  color: var(--accent);
  border-color: rgba(200, 134, 10, 0.15);
}

.badge-success {
  background: rgba(22, 163, 74, 0.08);
  color: var(--success);
  border-color: rgba(22, 163, 74, 0.15);
}

.badge-sm {
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
}

/* Card */
.card {
  background: var(--background);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
}

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

.card-content {
  padding: 1.5rem;
}

.card-image {
  width: 100%;
  height: 12rem;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card-image {
  transform: scale(1.05);
}

.card-image-container {
  overflow: hidden;
  position: relative;
}

/* Separator */
.separator {
  height: 1px;
  background: var(--border);
  border: none;
  margin: 1rem 0;
}