/* ========================================
   NAMMIR - Educational Resource
   Modular Institutional Composition Design
   ======================================== */

:root {
  /* Primary Color */
  --primary: #34495E;
  
  /* Accent Colors */
  --accent-red: #C0392B;
  --accent-green: #27AE60;
  --accent-orange: #F39C12;
  
  /* Neutrals */
  --neutral-light: #ECF0F1;
  --neutral-white: #FDFDFD;
  --neutral-gray: #BDC3C7;
  --text-secondary: #7F8C8D;
  
  /* Typography */
  --font-primary: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Spacing */
  --spacing-unit: 16px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  
  /* Transitions */
  --transition-smooth: all 0.3s ease-in-out;
  --transition-slow: all 0.5s ease-in-out;
}

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

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

html {
  scroll-behavior: smooth;
}

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

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

h1 {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.5px;
}

h2 {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  margin-top: var(--spacing-2xl);
}

h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.4;
  margin-bottom: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

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

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

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

a:hover {
  color: var(--primary);
  border-bottom: 1px solid var(--accent-red);
}

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

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

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

/* ========================================
   LAYOUT & SECTIONS
   ======================================== */

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

main {
  flex: 1;
  width: 100%;
}

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

header {
  background-color: var(--neutral-white);
  border-bottom: 1px solid var(--neutral-light);
  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;
  padding: var(--spacing-lg) 0;
  max-width: 1440px;
  margin: 0 auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

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

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

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

nav a:hover,
nav a.active {
  color: var(--accent-red);
  border-bottom: 2px solid var(--accent-red);
}

/* ========================================
   SECTIONS & MODULES
   ======================================== */

section {
  width: 100%;
  padding: var(--spacing-3xl) 0;
}

section:nth-child(even) {
  background-color: var(--neutral-light);
}

section.hero {
  background-color: var(--neutral-white);
  padding: var(--spacing-3xl) 0;
  border-bottom: 2px solid var(--neutral-light);
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--accent-red);
  margin: var(--spacing-md) auto 0;
}

/* ========================================
   GRID SYSTEM
   ======================================== */

.grid {
  display: grid;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

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

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

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

/* ========================================
   CARDS & MODULES
   ======================================== */

.card {
  background-color: var(--neutral-white);
  border: 1px solid var(--neutral-light);
  padding: var(--spacing-lg);
  border-radius: 4px;
  transition: var(--transition-smooth);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
}

.card:hover {
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
  border-color: var(--accent-red);
}

.card-image {
  width: 100%;
  height: 200px;
  background-color: var(--neutral-light);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  border-radius: 2px;
}

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

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

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

.card-link {
  display: inline-block;
  color: var(--accent-red);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.card-link:hover {
  transform: translateX(4px);
  color: var(--primary);
}

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

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 600;
  border: 2px solid var(--primary);
  background-color: transparent;
  color: var(--primary);
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
  border-radius: 2px;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

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

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

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

.btn-secondary {
  background-color: var(--accent-green);
  border-color: var(--accent-green);
  color: var(--neutral-white);
}

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

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

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

.image-hero {
  width: 100%;
  height: 400px;
  background-color: var(--neutral-light);
  overflow: hidden;
  margin-bottom: var(--spacing-2xl);
}

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

.image-featured {
  width: 100%;
  height: 300px;
  background-color: var(--neutral-light);
  margin-bottom: var(--spacing-lg);
}

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

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

footer {
  background-color: var(--primary);
  color: var(--neutral-white);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-3xl);
  border-top: 3px solid var(--accent-red);
}

.footer-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-2xl);
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: var(--neutral-white);
  margin-top: 0;
}

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

.footer-section a {
  color: var(--neutral-light);
  border-bottom: none;
}

.footer-section a:hover {
  color: var(--accent-red);
  border-bottom: 1px solid var(--accent-red);
}

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

.footer-bottom a {
  color: var(--neutral-light);
}

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

/* ========================================
   HERO SECTION
   ======================================== */

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero-text h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
}

.hero-text p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.hero-image {
  width: 100%;
  height: 500px;
  background-color: var(--neutral-light);
  overflow: hidden;
}

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

/* ========================================
   TEXT BLOCKS
   ======================================== */

.text-block {
  background-color: var(--neutral-white);
  padding: var(--spacing-2xl);
  border-left: 4px solid var(--accent-red);
  margin: var(--spacing-2xl) 0;
}

.text-block.accent-green {
  border-left-color: var(--accent-green);
}

.text-block.accent-orange {
  border-left-color: var(--accent-orange);
}

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

.form-group {
  margin-bottom: var(--spacing-lg);
  display: flex;
  flex-direction: column;
}

label {
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
  font-size: 0.95rem;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="message"],
textarea,
select {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--neutral-gray);
  background-color: var(--neutral-white);
  color: var(--primary);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  border-radius: 2px;
  transition: var(--transition-smooth);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="message"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent-red);
  box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.1);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========================================
   BLOG & CONTENT
   ======================================== */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-top: var(--spacing-2xl);
}

.blog-card {
  background-color: var(--neutral-white);
  border: 1px solid var(--neutral-light);
  overflow: hidden;
  transition: var(--transition-smooth);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
}

.blog-card:hover {
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
  transform: translateY(-4px);
}

.blog-image {
  width: 100%;
  height: 250px;
  background-color: var(--neutral-light);
  overflow: hidden;
}

.blog-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.blog-card:hover .blog-image img {
  transform: scale(1.05);
}

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

.blog-date {
  font-size: 0.85rem;
  color: var(--accent-red);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.blog-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
}

.blog-excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.blog-meta {
  font-size: 0.85rem;
  color: var(--neutral-gray);
}

/* ========================================
   BREADCRUMB
   ======================================== */

.breadcrumb {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  font-size: 0.9rem;
}

.breadcrumb a {
  color: var(--accent-red);
}

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

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

@media (max-width: 1024px) {
  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.75rem;
  }

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

  .hero-content {
    grid-template-columns: 1fr;
  }

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

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

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

@media (max-width: 768px) {
  :root {
    font-size: 14px;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }

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

  nav ul {
    flex-direction: column;
    gap: var(--spacing-md);
    position: absolute;
    background-color: var(--neutral-white);
    top: 100%;
    left: 0;
    right: 0;
    padding: var(--spacing-lg);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    display: none;
  }

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

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

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

  section {
    padding: var(--spacing-2xl) 0;
  }

  .hero-text h1 {
    font-size: 1.5rem;
  }

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

@media (max-width: 480px) {
  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1.1rem;
  }

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

  .hero-image {
    height: 300px;
  }
}