/* ==========================================
   QRAPTIK - CSS STYLESHEET
   Institutional Knowledge Portal Design
   ========================================== */

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

:root {
  --color-primary: #224229;
  --color-accent: #B58B3F;
  --color-grey: #D4D4D4;
  --color-ivory: #F8F8F4;
  --color-text-dark: #1a1a1a;
  --color-text-light: #555555;
  --color-border: #d0d0d0;
  --spacing-base: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 60px;
  --font-sans: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Lora', 'Georgia', serif;
  --transition: 200ms ease-in-out;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-ivory);
  color: var(--color-text-dark);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */

h1 {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  text-wrap: balance;
}

h2 {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

h3 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

h4 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

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

strong {
  font-weight: 600;
  color: var(--color-primary);
}

ul, ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
}

li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
}

/* ==========================================
   HEADER & NAVIGATION
   ========================================== */

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--color-primary);
  color: var(--color-ivory);
  padding: var(--spacing-sm) 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

header .logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 1px;
}

nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  gap: var(--spacing-lg);
  align-items: center;
}

nav a {
  color: var(--color-ivory);
  border-bottom: 2px solid transparent;
  transition: border-bottom var(--transition);
  font-size: 0.95rem;
  font-weight: 500;
}

nav a:hover,
nav a.active {
  border-bottom-color: var(--color-accent);
}

/* ==========================================
   MAIN CONTAINER & LAYOUT
   ========================================== */

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-full {
  max-width: 100%;
  padding: 0;
}

main {
  margin-top: 80px;
  min-height: calc(100vh - 300px);
}

/* ==========================================
   SECTIONS
   ========================================== */

section {
  padding: var(--spacing-xl) 0;
}

section.hero {
  background-color: var(--color-primary);
  color: var(--color-ivory);
  padding: var(--spacing-xl) 0;
  position: relative;
  overflow: hidden;
}

section.hero h1 {
  color: var(--color-accent);
  font-size: 4rem;
}

section.hero p {
  color: var(--color-grey);
  font-size: 1.1rem;
}

section.light {
  background-color: var(--color-ivory);
}

section.alternate {
  background-color: #ffffff;
}

section.accent-bg {
  background-color: var(--color-accent);
  color: #ffffff;
}

section.accent-bg h2,
section.accent-bg h3 {
  color: #ffffff;
}

/* ==========================================
   GRID LAYOUTS
   ========================================== */

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

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

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

.grid-cols-2-text-image {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.grid-cols-2-text-image.image-first {
  grid-template-columns: 1fr 1fr;
}

.grid-cols-2-text-image.image-first img {
  grid-column: 1;
}

.grid-cols-2-text-image.image-first > div {
  grid-column: 2;
}

/* ==========================================
   IMAGES & MEDIA
   ========================================== */

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
  transition: opacity var(--transition);
}

img:hover {
  opacity: 0.95;
}

figure {
  margin: var(--spacing-lg) 0;
  display: flex;
  flex-direction: column;
}

figure img {
  width: 100%;
  height: auto;
  margin-bottom: var(--spacing-sm);
}

figcaption {
  color: var(--color-text-light);
  font-size: 0.9rem;
  font-style: italic;
  text-align: center;
}

.image-block {
  width: 100%;
  height: auto;
  background-color: #f0f0f0;
  border-radius: 2px;
  overflow: hidden;
}

/* ==========================================
   CARDS
   ========================================== */

.card {
  background-color: #ffffff;
  padding: var(--spacing-md);
  border-radius: 2px;
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.card h3 {
  color: var(--color-primary);
  margin-top: 0;
}

.card p {
  margin-bottom: 0;
}

/* ==========================================
   BUTTONS
   ========================================== */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-primary);
  color: var(--color-ivory);
  border: 2px solid var(--color-primary);
  border-radius: 2px;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

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

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

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

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

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

/* ==========================================
   FOOTER
   ========================================== */

footer {
  background-color: var(--color-primary);
  color: var(--color-ivory);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: var(--spacing-xl);
}

footer .container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

footer h4 {
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
}

footer ul {
  list-style: none;
  margin: 0;
}

footer li {
  margin-bottom: var(--spacing-sm);
}

footer a {
  color: var(--color-grey);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

footer a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: var(--color-grey);
  font-size: 0.9rem;
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 1024px) {
  .container {
    max-width: 100%;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-cols-2-text-image {
    grid-template-columns: 1fr;
  }

  .grid-cols-2-text-image.image-first > div,
  .grid-cols-2-text-image.image-first img {
    grid-column: auto;
  }

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

  nav ul {
    gap: var(--spacing-md);
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-lg: 24px;
    --spacing-xl: 40px;
  }

  header .container {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  main {
    margin-top: 180px;
  }

  section {
    padding: var(--spacing-lg) 0;
  }

  .btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.95rem;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-md: 16px;
    --spacing-lg: 20px;
  }

  header .logo {
    font-size: 1.25rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1.1rem;
  }

  .card {
    padding: var(--spacing-sm);
  }
}