/* Zejura - Institutional Knowledge Portal */
/* Main CSS Stylesheet */

/* ==================== CSS Variables ==================== */
:root {
  --primary: #2C3E50;
  --secondary: #F9F5F1;
  --accent-teal: #60B08E;
  --accent-gold: #E0B97A;
  --neutral-light: #E0E0E0;
  --neutral-lighter: #F0F0F0;
  --text-primary: #2C3E50;
  --text-secondary: #555555;
  --border-color: #E0E0E0;
  
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 48px;
  --spacing-xl: 72px;
  --spacing-2xl: 96px;
  
  --transition-speed: 200ms;
  --border-radius: 4px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Open Sans', 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-primary);
  background-color: var(--secondary);
  line-height: 1.6;
  font-weight: 400;
}

/* ==================== Typography ==================== */
h1 {
  font-family: 'Georgia', 'Merriweather', serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.5px;
}

h2 {
  font-family: 'Georgia', 'Merriweather', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

h3 {
  font-family: 'Georgia', 'Merriweather', serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.4;
  margin-bottom: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

h4, h5, h6 {
  font-family: 'Georgia', 'Merriweather', serif;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

p {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
}

a {
  color: var(--accent-teal);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

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

ul, ol {
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

li {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

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

em {
  font-style: italic;
  color: var(--text-secondary);
}

/* ==================== Header & Navigation ==================== */
header {
  background-color: var(--primary);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

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

.logo {
  font-family: 'Georgia', serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--secondary);
  letter-spacing: 2px;
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

.logo:hover {
  color: var(--accent-teal);
}

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

nav a {
  color: var(--secondary);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  transition: color var(--transition-speed) ease;
}

nav a:hover,
nav a.active {
  color: var(--accent-teal);
  text-decoration: none;
}

nav a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent-teal);
}

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

/* ==================== Sections ==================== */
section {
  padding: var(--spacing-xl) 0;
}

section.hero {
  padding: var(--spacing-2xl) 0;
  background-color: var(--secondary);
}

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

section.full-width {
  margin: 0;
  padding: var(--spacing-xl) 0;
}

/* ==================== Grid & Layout ==================== */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

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

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

.flex {
  display: flex;
  gap: var(--spacing-md);
}

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

.flex-center {
  align-items: center;
  justify-content: center;
}

.flex-between {
  align-items: center;
  justify-content: space-between;
}

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

.img-cover {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--border-radius);
}

.img-full-width {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
}

.img-container {
  overflow: hidden;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* ==================== Cards ==================== */
.card {
  background-color: white;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  transition: box-shadow var(--transition-speed) ease, transform var(--transition-speed) ease;
}

.card:hover {
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.card-title {
  font-family: 'Georgia', serif;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

.card-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==================== Buttons ==================== */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: 'Open Sans', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: all var(--transition-speed) ease;
  letter-spacing: 0.5px;
}

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

.btn-primary:hover {
  background-color: var(--accent-teal);
  box-shadow: 0 4px 12px rgba(96, 176, 142, 0.3);
}

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

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

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

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

/* ==================== Forms ==================== */
form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

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

input[type="text"],
input[type="email"],
input[type="phone"],
input[type="url"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-primary);
  background-color: white;
  transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="phone"]:focus,
input[type="url"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent-teal);
  box-shadow: 0 0 0 3px rgba(96, 176, 142, 0.1);
}

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

/* ==================== Footer ==================== */
footer {
  background-color: var(--primary);
  color: var(--secondary);
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-2xl);
}

footer .container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--spacing-lg);
}

footer h3 {
  color: var(--secondary);
  margin-bottom: var(--spacing-md);
  font-size: 1.1rem;
}

footer a {
  color: var(--secondary);
  text-decoration: none;
}

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

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

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  text-align: center;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

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

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

.mt {
  margin-top: var(--spacing-md);
}

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

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

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

.rounded {
  border-radius: var(--border-radius);
}

.shadow {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.shadow-lg {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

/* ==================== Animations ==================== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

.slide-up {
  animation: slideUp 0.6s ease-out;
}

/* ==================== Responsive Design ==================== */
@media (max-width: 768px) {
  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.2rem;
  }

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

  nav ul {
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
  }

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

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

  .flex {
    flex-direction: column;
  }

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

  .img-cover {
    height: 250px;
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 14px;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.2rem;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

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

  .btn {
    width: 100%;
  }
}