/* === Google Fonts: Bitter (headlines) + Open Sans (body) === */
@import url('https://fonts.googleapis.com/css2?family=Bitter:wght@400;700&family=Open+Sans:ital,wght@0,400;0,600;0,700;1,400&display=swap');

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

:root {
  /* CESMII Brand — Primary */
  --color-primary: #4084ef;
  --color-primary-dark: #2b47da;
  --color-dark: #231f20;
  /* CESMII Brand — Secondary */
  --color-cyan: #00aeef;
  --color-green: #6aa342;
  --color-lime: #9fb522;
  --color-purple: #5438d4;
  --color-deep-purple: #4d006e;
  /* Accent */
  --color-accent: #9fb522;
  --color-accent-hover: #8a9e1e;
  /* Neutrals */
  --color-bg: #ffffff;
  --color-bg-alt: #f5f6f8;
  --color-text: #231f20;
  --color-text-light: #666;
  --color-border: #e0e0e0;
  --color-white: #ffffff;
  /* Layout */
  --max-width: 1200px;
  --header-height: 72px;
  --radius: 6px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 24px rgba(0, 0, 0, 0.12);
  --transition: 0.25s ease;
  /* Fonts */
  --font-heading: 'Bitter', Georgia, serif;
  --font-body: 'Open Sans', Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 15px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

/* === Header === */
.site-header {
  background: linear-gradient(135deg, var(--color-cyan), var(--color-primary-dark));
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  height: 44px;
  width: auto;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0;
  align-items: center;
}

.nav-links a {
  display: block;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  transition: background var(--transition), color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  margin: 5px 0;
  transition: var(--transition);
}

/* === Footer === */
.site-footer {
  background: var(--color-dark);
  color: #ccc;
  margin-top: auto;
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
}

.footer-logo-img {
  height: 40px;
  width: auto;
  margin-bottom: 0.75rem;
}

.footer-program {
  font-size: 0.85rem;
  opacity: 0.6;
  margin-bottom: 1rem;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a {
  color: #aaa;
  transition: color var(--transition);
}

.footer-social a:hover {
  color: var(--color-cyan);
}

.footer-col h4 {
  font-family: var(--font-heading);
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: 1rem;
}

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

.footer-col ul li {
  margin-bottom: 0.5rem;
}

.footer-col a {
  color: #aaa;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--color-cyan);
}

.footer-col p {
  margin-bottom: 0.35rem;
  color: #aaa;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  padding: 1.25rem 1.5rem;
  font-size: 0.8rem;
  color: #888;
}

/* === Container === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* === Hero === */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 40%, var(--color-purple) 70%, var(--color-deep-purple) 100%);
  color: var(--color-white);
  padding: 6rem 1.5rem;
  text-align: center;
  position: relative;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 700;
  line-height: 1.2;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.92;
  max-width: 680px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.8);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
}

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

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

/* === Section === */
.section {
  padding: 5rem 1.5rem;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-dark {
  background: var(--color-dark);
  color: var(--color-white);
}

.section-dark .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.section-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-purple) 100%);
  color: var(--color-white);
}

.section-gradient .section-subtitle {
  color: rgba(255, 255, 255, 0.8);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  text-align: center;
  margin-bottom: 0.75rem;
  font-weight: 700;
  line-height: 1.3;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 3rem;
  font-size: 1.05rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.section-cta {
  text-align: center;
  margin-top: 2.5rem;
}

/* === Cards grid === */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.card-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.card-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-body {
  padding: 1.5rem;
}

.card-body h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.card-body p {
  color: var(--color-text-light);
  font-size: 0.93rem;
  margin-bottom: 1rem;
  line-height: 1.6;
}

.card-meta {
  font-size: 0.83rem;
  color: var(--color-text-light);
}

/* === Icon cards (features) === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.feature-item {
  text-align: center;
  padding: 2.5rem 1.5rem;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.feature-item:hover {
  background: rgba(0, 0, 0, 0.02);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-primary));
  color: var(--color-white);
  font-size: 1.5rem;
}

.feature-item h3 {
  font-family: var(--font-heading);
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.feature-item p {
  color: var(--color-text-light);
  font-size: 0.93rem;
  line-height: 1.7;
}

/* === Stats row === */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.stat-item h3 {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--color-cyan);
  margin-bottom: 0.5rem;
}

.stat-item p {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.85;
}

/* === Two-column layout === */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

.two-col-text h2 {
  font-family: var(--font-heading);
  font-size: 2rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.two-col-text p {
  color: var(--color-text-light);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.two-col-text .btn {
  margin-top: 0.5rem;
}

.two-col-img img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
}

/* === CTA banner === */
.cta-banner {
  text-align: center;
  padding: 4rem 1.5rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-purple));
  color: var(--color-white);
}

.cta-banner h2 {
  font-family: var(--font-heading);
  font-size: 2rem;
  margin-bottom: 1rem;
}

.cta-banner p {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* === Page header / banner === */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 50%, var(--color-purple) 100%);
  padding: 4rem 1.5rem;
  text-align: center;
  color: var(--color-white);
}

.page-header h1 {
  font-family: var(--font-heading);
  font-size: 2.6rem;
  margin-bottom: 0.75rem;
}

.page-header p {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* === Blog post content typography === */
.blog-content {
  max-width: 780px;
  margin: 0 auto;
  line-height: 1.8;
}

.blog-content h1,
.blog-content h2,
.blog-content h3,
.blog-content h4 {
  font-family: var(--font-heading);
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.blog-content h1 { font-size: 2.2rem; }
.blog-content h2 { font-size: 1.6rem; }
.blog-content h3 { font-size: 1.3rem; }

.blog-content p {
  margin-bottom: 1.25rem;
}

.blog-content img {
  border-radius: var(--radius);
  margin: 1.5rem 0;
}

.blog-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background: var(--color-bg-alt);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.blog-content ul,
.blog-content ol {
  margin: 1rem 0 1.25rem 1.5rem;
}

.blog-content li {
  margin-bottom: 0.5rem;
}

.blog-content pre {
  background: var(--color-dark);
  color: #e0e0e0;
  padding: 1.25rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 1.5rem 0;
}

.blog-content code {
  background: var(--color-bg-alt);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
}

.blog-content pre code {
  background: none;
  padding: 0;
}

.blog-header {
  text-align: center;
  margin-bottom: 3rem;
}

.blog-header h1 {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  margin-bottom: 1rem;
}

.blog-header .blog-meta {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* === Load more === */
.load-more-wrap {
  text-align: center;
  margin-top: 2.5rem;
}

/* === Contact form container === */
.form-container {
  max-width: 640px;
  margin: 0 auto;
}

/* === About / text content === */
.text-content {
  max-width: 780px;
  margin: 0 auto;
  font-size: 1.02rem;
}

.text-content p {
  margin-bottom: 1.25rem;
  line-height: 1.8;
}

.text-content h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.text-content h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.text-content ul,
.text-content ol {
  margin: 1rem 0 1.25rem 1.5rem;
}

.text-content li {
  margin-bottom: 0.5rem;
}

/* === Loading / Error states === */
.loading {
  text-align: center;
  padding: 3rem;
  color: var(--color-text-light);
}

.error-message {
  text-align: center;
  padding: 2rem;
  color: #c0392b;
  background: #fdf0ef;
  border-radius: var(--radius);
  margin: 1rem 0;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .nav-links a {
    padding: 0.5rem 0.5rem;
    font-size: 0.78rem;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

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

  .two-col {
    gap: 2.5rem;
  }

  .card-grid-3,
  .card-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .section {
    padding: 3.5rem 1.5rem;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--color-cyan), var(--color-primary-dark));
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 0.65rem 1rem;
    font-size: 0.9rem;
  }

  .card-grid,
  .card-grid-3,
  .card-grid-4 {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .two-col {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .two-col-img {
    order: -1;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .page-header h1 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 4rem 1rem;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .section {
    padding: 2.5rem 1rem;
  }

  .blog-header h1 {
    font-size: 1.8rem;
  }

  .stats-row {
    grid-template-columns: 1fr;
  }
}