/* ==============================================
   WROKYAN - Institutional Knowledge Portal
   Main Stylesheet
   ============================================== */

:root {
  --primary: #2C3E50;
  --primary-light: #34495E;
  --secondary: #BDC3C7;
  --accent-primary: #F39C12;
  --accent-secondary: #1ABC9C;
  --gray-dark: #7F8C8D;
  --gray-light: #ECF0F1;
  --white: #FFFFFF;
  --black: #000000;
  
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  --spacing-3xl: 80px;
  --spacing-4xl: 120px;
  
  --font-sans: 'Open Sans', 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Merriweather Sans', 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ==============================================
   RESET & BASE STYLES
   ============================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--primary);
  background-color: var(--white);
}

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

h1 {
  font-family: var(--font-heading);
  font-size: 56px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary);
  margin-bottom: var(--spacing-xl);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

h2 {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--primary);
  margin-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--accent-secondary);
  padding-bottom: var(--spacing-md);
}

h3 {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--gray-dark);
  margin-bottom: var(--spacing-md);
}

p {
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

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

a:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.full-width {
  width: 100%;
}

.section {
  padding: var(--spacing-4xl) 0;
  border-top: 1px solid var(--secondary);
}

.section:first-child {
  border-top: none;
}

.section--hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--white);
  padding: var(--spacing-4xl) 0;
  text-align: center;
}

.section--hero h1 {
  color: var(--white);
}

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

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

.section--dark h2,
.section--dark h3 {
  color: var(--white);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

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

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

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

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

header {
  background-color: var(--primary);
  color: var(--white);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.logo {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 700;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

nav a {
  color: var(--white);
  font-weight: 500;
  transition: color 0.3s ease;
  border-bottom: 2px solid transparent;
  padding-bottom: 4px;
}

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

@media (max-width: 768px) {
  nav ul {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  h1 {
    font-size: 36px;
  }
  
  h2 {
    font-size: 28px;
  }
}

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

footer {
  background-color: var(--primary);
  color: var(--gray-light);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-4xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto var(--spacing-lg);
  padding: 0 var(--spacing-md);
}

.footer-section h4 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
  font-size: 16px;
  font-weight: 700;
}

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

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

.footer-section a {
  color: var(--gray-light);
}

.footer-section a:hover {
  color: var(--accent-primary);
}

.footer-contact {
  font-size: 14px;
  line-height: 1.8;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  font-size: 14px;
  color: var(--gray-light);
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* ==============================================
   BUTTONS & CTA
   ============================================== */

.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-lg);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

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

.btn--primary:hover {
  background-color: #E67E22;
  box-shadow: 0 4px 12px rgba(243, 156, 18, 0.3);
}

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

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

.btn--block {
  display: block;
  width: 100%;
  text-align: center;
}

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

.card {
  background-color: var(--white);
  border: 1px solid var(--secondary);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
  border-color: var(--accent-secondary);
}

.card-image {
  width: 100%;
  height: 240px;
  overflow: hidden;
  background-color: var(--gray-light);
}

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

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

.card-content h3 {
  margin-top: 0;
}

.card-content p {
  margin-bottom: var(--spacing-md);
  font-size: 14px;
  line-height: 1.6;
}

/* ==============================================
   IMAGES
   ============================================== */

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

.image-hero {
  width: 100%;
  height: auto;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* ==============================================
   TWO-COLUMN LAYOUT
   ============================================== */

.two-column {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.two-column--reverse {
  grid-template-columns: 0.8fr 1.2fr;
}

.two-column-image {
  width: 100%;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.two-column-content {
  padding: var(--spacing-xl) 0;
}

@media (max-width: 768px) {
  .two-column,
  .two-column--reverse {
    grid-template-columns: 1fr;
  }
}

/* ==============================================
   FORMS
   ============================================== */

.form-group {
  margin-bottom: var(--spacing-md);
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--primary);
}

input,
textarea,
select {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-sans);
  font-size: 16px;
  border: 1px solid var(--secondary);
  border-radius: 4px;
  background-color: var(--white);
  color: var(--primary);
  transition: border-color 0.3s ease;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent-secondary);
  box-shadow: 0 0 0 3px rgba(26, 188, 156, 0.1);
}

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

/* ==============================================
   LISTS
   ============================================== */

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

li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

.list--icon li:before {
  content: "▸ ";
  color: var(--accent-secondary);
  margin-right: var(--spacing-sm);
}

/* ==============================================
   UTILITIES
   ============================================== */

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

.text-accent {
  color: var(--accent-primary);
}

.text-secondary-accent {
  color: var(--accent-secondary);
}

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

/* ==============================================
   RESPONSIVENESS
   ============================================== */

@media (max-width: 1024px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-4xl: 64px;
    --spacing-3xl: 48px;
  }
  
  .header-content {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  nav ul {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 32px;
  }
  
  h2 {
    font-size: 24px;
  }
  
  h3 {
    font-size: 18px;
  }
  
  .btn {
    padding: var(--spacing-md) var(--spacing-md);
    font-size: 14px;
  }
}