/* ========================================
   HRO Centra Website - Main Stylesheet
   ======================================== */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@600;700;800&display=swap');

/* ========================================
   CSS Variables & Color Scheme
   ======================================== */
:root {
  --primary: #0891b2;
  --primary-dark: #0e7490;
  --primary-light: #06b6d4;
  --secondary: #f0f9fa;
  --background: #ffffff;
  --foreground: #1a202c;
  --muted-foreground: #718096;
  --border: #e2e8f0;
  --card-bg: #ffffff;
  --accent-bg: #f0f9fa;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px 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);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
  color: var(--muted-foreground);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* ========================================
   Container & Layout
   ======================================== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .container {
    padding: 0 1.5rem;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }
}

section {
  padding: 4rem 0;
}

@media (min-width: 768px) {
  section {
    padding: 6rem 0;
  }
}

/* ========================================
   Navigation
   ======================================== */
nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--background);
  box-shadow: var(--shadow);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.125rem;
}

.nav-logo-icon {
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--primary);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 0.875rem;
}

.nav-menu {
  display: none;
  gap: 2rem;
  list-style: none;
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
  }
}

.nav-menu a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--foreground);
  transition: color 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
}

.mobile-menu {
  display: none;
  background-color: var(--background);
  border-top: 1px solid var(--border);
  padding: 1rem;
}

.mobile-menu.active {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mobile-menu a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--foreground);
  padding: 0.5rem 0;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

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

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

.btn-outline {
  background-color: transparent;
  color: var(--foreground);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background-color: var(--accent-bg);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* ========================================
   Cards
   ======================================== */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s ease;
}

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

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.card-text {
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

/* ========================================
   Hero Section
   ======================================== */
#hero {
  background: linear-gradient(135deg, rgba(8, 145, 178, 0.05) 0%, rgba(255, 255, 255, 0) 100%);
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 768px) {
  .hero-container {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
}

.hero-content h1 {
  margin-bottom: 1.5rem;
}

.hero-content h1 .highlight {
  color: var(--primary);
}

.hero-content p {
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 640px) {
  .hero-buttons {
    flex-direction: row;
  }
}

.hero-image {
  width: 100%;
  height: auto;
  border-radius: 1rem;
  box-shadow: var(--shadow-lg);
  object-fit: cover;
}

/* ========================================
   Grid Layouts
   ======================================== */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ========================================
   Section Backgrounds
   ======================================== */
.bg-white {
  background-color: var(--background);
}

.bg-light {
  background-color: var(--accent-bg);
}

.bg-gradient {
  background: linear-gradient(135deg, rgba(8, 145, 178, 0.1) 0%, rgba(8, 145, 178, 0.05) 100%);
}

/* ========================================
   Section Headers
   ======================================== */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.125rem;
  max-width: 42rem;
  margin: 0 auto;
}

/* ========================================
   Service Cards
   ======================================== */
.service-card {
  display: flex;
  gap: 1rem;
}

.service-icon {
  width: 3rem;
  height: 3rem;
  min-width: 3rem;
  background-color: rgba(8, 145, 178, 0.1);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.5rem;
}

.service-content h3 {
  margin-bottom: 0.75rem;
}

.service-list {
  list-style: none;
}

.service-list li {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

.service-list li:before {
  content: "›";
  color: var(--primary);
  font-weight: bold;
  margin-right: 0.25rem;
}

/* ========================================
   Benefit Cards
   ======================================== */
.benefit-card {
  display: flex;
  gap: 1rem;
}

.benefit-number {
  width: 2.5rem;
  height: 2.5rem;
  min-width: 2.5rem;
  background-color: var(--primary);
  color: white;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
}

.benefit-content h3 {
  margin-bottom: 0.5rem;
}

.benefit-content p {
  font-size: 0.875rem;
}

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

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-item {
  display: flex;
  gap: 1rem;
}

.contact-icon {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.contact-content h3 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.contact-content p {
  font-size: 0.875rem;
  margin: 0;
}

.contact-content a {
  display: block;
  margin-top: 0.25rem;
}

/* ========================================
   Footer
   ======================================== */
footer {
  background-color: var(--foreground);
  color: white;
  padding: 2rem 0;
}

.footer-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .footer-container {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-section h4 {
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

/* ========================================
   Images
   ======================================== */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

.img-rounded {
  border-radius: 1rem;
}

.img-shadow {
  box-shadow: var(--shadow-lg);
}

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

.text-muted {
  color: var(--muted-foreground);
}

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

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

.justify-between {
  justify-content: space-between;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 767px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  section {
    padding: 2rem 0;
  }
}