/* =========================================
   Vistar Nations - Main Stylesheet
   ========================================= */

/* --- CSS Variables & Theming --- */
:root {
  --primary-green: #2e7d32;
  --primary-green-light: #4caf50;
  --primary-green-dark: #1b5e20;
  --cream-white: #f9f9f6;
  --text-dark: #1a202c;
  --text-light: #4a5568;
  --white: #ffffff;
  --border-color: #e2e8f0;
  
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', 'Inter', system-ui, sans-serif;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
  --shadow-hover: 0 20px 25px rgba(0,0,0,0.1);
  
  --border-radius: 12px;
  --container-width: 1200px;
}

/* --- Reset & Global --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--cream-white);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

p {
  color: var(--text-light);
  margin-bottom: 1rem;
}

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

ul {
  list-style: none;
}

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

/* --- Layout Utility --- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 5%;
}

.section-padding {
  padding: 5rem 0;
}

.text-center { text-align: center; }
.text-green { color: var(--primary-green); }

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
}

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

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

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

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

/* --- Header & Navigation --- */
header {
  background-color: rgba(249, 249, 246, 0.95);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
}

/* Micro-animation: underline on hover */
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-green);
  transition: var(--transition);
}

.nav-links a:hover::after, .nav-links a.active::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-dark);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  height: 80vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: -2;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(to right, rgba(249,249,246,0.95) 0%, rgba(249,249,246,0.7) 50%, rgba(249,249,246,0.3) 100%);
  z-index: -1;
}

.hero-content {
  max-width: 600px;
}

.hero-content h1 {
  font-size: 3.5rem;
  color: var(--primary-green-dark);
  margin-bottom: 1.5rem;
  animation: fadeUp 1s ease-out;
}

.hero-content p {
  font-size: 1.25rem;
  color: var(--text-dark);
  margin-bottom: 2rem;
  animation: fadeUp 1.2s ease-out;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  animation: fadeUp 1.4s ease-out;
}

/* --- Cards (Services, Process, Preview) --- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
  align-items: center;
}

.card {
  background: var(--white);
  padding: 2.5rem 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

/* Card Hover Micro-animation */
.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-green-light);
}

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

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* --- Image with Text Section --- */
.img-text-section img {
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  width: 100%;
  height: 400px;
  object-fit: cover;
}

/* --- CTA Section --- */
.cta-section {
  background-color: var(--primary-green);
  color: var(--white);
  text-align: center;
  padding: 5rem 0;
}

.cta-section h2, .cta-section p {
  color: var(--white);
}

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

.cta-section .btn:hover {
  background-color: var(--cream-white);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

/* --- Page Headers (Internal Pages) --- */
.page-header {
  position: relative;
  background-color: var(--primary-green-dark);
  color: var(--white);
  padding: 8rem 0 6rem;
  text-align: center;
  background-size: cover;
  background-position: center;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(27, 94, 32, 0.7);
  z-index: 1;
}

.page-header .container {
  position: relative;
  z-index: 2;
}

.page-header h1 {
  color: var(--white);
  margin-bottom: 0.5rem;
  font-size: 3.5rem;
}

.page-header p {
  color: rgba(255,255,255,0.9);
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto;
}

/* --- FAQ Accordion --- */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-question {
  padding: 1.5rem 2rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1.1rem;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary-green);
}

.faq-answer {
  padding: 0 2rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.active .faq-answer {
  padding-bottom: 1.5rem;
}

.faq-icon {
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

/* --- Contact Form --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
}

.contact-info-card {
  background: var(--white);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}

.contact-form {
  background: var(--white);
  padding: 3rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.form-control {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  background-color: #fafafa;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-green);
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.1);
  background-color: var(--white);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

/* --- Footer --- */
footer {
  background-color: var(--text-dark);
  color: var(--white);
  padding: 4rem 0 2rem;
}

footer p {
  color: #a0aec0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: var(--white);
  margin-bottom: 1.5rem;
}

.footer-links li {
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.footer-links li i {
  width: 20px;
  text-align: center;
  font-size: 1.1rem;
  margin-top: 5px;
}

.footer-links a {
  color: #a0aec0;
}

.footer-links a:hover {
  color: var(--primary-green-light);
  padding-left: 5px;
}

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

/* --- Utilities & Animations --- */
.fade-up-element {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up-element.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Responsive Media Queries --- */
@media (max-width: 992px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .page-header { padding: 6rem 0 4rem; }
  .page-header h1 { font-size: 2.5rem; }
  .hero-content h1 { font-size: 2.5rem; }
  .hero-content p { font-size: 1.1rem; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  
  .nav-links {
    position: absolute;
    top: 80px;
    left: -100%;
    width: 100%;
    background-color: var(--white);
    flex-direction: column;
    padding: 2rem 0;
    box-shadow: var(--shadow-md);
    transition: left 0.3s ease;
  }
  
  .nav-links.active {
    left: 0;
  }
  
  .mobile-menu-btn {
    display: block;
  }
}



.popup {
  position: fixed;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: #1e7f4f;
  color: white;
  padding: 20px 30px;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  transition: top 0.5s ease;
  z-index: 9999;
}

.popup.show {
  top: 20px;
}

.popup button {
  margin-top: 10px;
  background: white;
  color: #1e7f4f;
  border: none;
  padding: 8px 16px;
  border-radius: 5px;
  cursor: pointer;
}