/* 
  VSSCI Charity Website - CSS3 Pure
  Design Movement: Editorial Humanitarian Modernism
  Color Palette: Red humanitarian, cream paper, charcoal ink, earth tones
  Typography: Serif display + Sans body for editorial hierarchy
*/

/* ============================================
   1. ROOT & TYPOGRAPHY SYSTEM
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@600;700;800&family=Lora:wght@400;500;600&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Colors - Humanitarian Red Palette */
  --color-red-primary: #c41e3a;
  --color-red-dark: #8b1528;
  --color-red-light: #e74c5c;
  --color-red-accent: #d63447;
  
  /* Neutrals - Editorial Paper & Ink */
  --color-cream: #faf8f3;
  --color-off-white: #f5f3f0;
  --color-charcoal: #2c2c2c;
  --color-gray-dark: #4a4a4a;
  --color-gray-medium: #7a7a7a;
  --color-gray-light: #d4d4d4;
  --color-gray-pale: #e8e8e8;
  
  /* Earth Tones */
  --color-earth-brown: #8b7355;
  --color-earth-tan: #c9b8a3;
  
  /* Typography */
  --font-display: 'Playfair Display', serif;
  --font-serif: 'Lora', serif;
  --font-sans: 'Inter', sans-serif;
  
  /* Spacing System */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Sizing */
  --max-width: 1200px;
  --container-padding: 2rem;
  
  /* Shadows & Effects */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
  
  /* Transitions */
  --transition-fast: 0.2s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
}

/* ============================================
   2. RESET & BASE STYLES
   ============================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-charcoal);
  background-color: var(--color-cream);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   3. TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-charcoal);
}

h1 {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  position: relative;
  padding-bottom: var(--spacing-md);
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-red-primary), transparent);
}

h3 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

p {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-dark);
}

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

em {
  font-style: italic;
  color: var(--color-red-primary);
}

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

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

/* ============================================
   4. LAYOUT & CONTAINER
   ============================================ */

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

.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

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

.section.red-accent {
  background: linear-gradient(135deg, rgba(196, 30, 58, 0.08) 0%, rgba(230, 52, 71, 0.04) 100%);
}

/* ============================================
   5. HEADER & NAVIGATION
   ============================================ */

header {
  background-color: white;
  border-bottom: 1px solid var(--color-gray-pale);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

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

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-red-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.logo span {
  display: block;
  font-size: 0.7rem;
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--color-gray-medium);
  letter-spacing: 0.05em;
  margin-top: 0.2rem;
}

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

nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-charcoal);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-red-primary);
  transition: width var(--transition-fast);
}

nav a:hover::after {
  width: 100%;
}

nav a.active {
  color: var(--color-red-primary);
}

nav a.active::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-charcoal);
}

/* ============================================
   6. HERO SECTION
   ============================================ */

.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-cream) 0%, var(--color-off-white) 100%);
}

.hero-background {
  position: absolute;
  top: 0;
  right: 0;
  width: 60%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0.9;
  clip-path: polygon(30% 0%, 100% 0%, 100% 100%, 0% 100%);
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 50%;
  padding-right: var(--spacing-2xl);
}

.hero h1 {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  color: var(--color-charcoal);
}

.hero .subtitle {
  font-size: 1.25rem;
  font-family: var(--font-serif);
  color: var(--color-red-primary);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
}

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

/* ============================================
   7. BUTTONS & CTA
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-lg);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.btn-primary {
  background-color: var(--color-red-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--color-red-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

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

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

.btn-group {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

/* ============================================
   8. CARDS & CONTENT BLOCKS
   ============================================ */

.card {
  background-color: white;
  border-radius: 4px;
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  border-left: 4px solid var(--color-red-primary);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.card h3 {
  color: var(--color-red-primary);
  margin-bottom: var(--spacing-md);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.stat-box {
  text-align: center;
  padding: var(--spacing-xl);
  background: linear-gradient(135deg, rgba(196, 30, 58, 0.05) 0%, rgba(230, 52, 71, 0.02) 100%);
  border-radius: 4px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-red-primary);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-size: 1rem;
  color: var(--color-gray-medium);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   9. IMAGE & MEDIA
   ============================================ */

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

.image-frame {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  box-shadow: var(--shadow-md);
  margin-bottom: var(--spacing-lg);
}

.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}

.image-frame:hover img {
  transform: scale(1.02);
}

.image-caption {
  font-size: 0.9rem;
  color: var(--color-gray-medium);
  font-style: italic;
  margin-top: var(--spacing-sm);
  padding: 0 var(--spacing-sm);
}

.hero-image-right {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 50%;
  height: 100%;
  background-size: cover;
  background-position: center;
  border-radius: 0;
}

/* ============================================
   10. GRID & LAYOUT UTILITIES
   ============================================ */

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

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

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

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

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

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

/* ============================================
   11. DIVIDERS & VISUAL ELEMENTS
   ============================================ */

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gray-light), transparent);
  margin: var(--spacing-2xl) 0;
}

.divider-red {
  height: 3px;
  background: linear-gradient(90deg, var(--color-red-primary), var(--color-red-light), transparent);
  margin: var(--spacing-xl) 0;
}

.accent-line {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-red-primary), transparent);
  margin-bottom: var(--spacing-md);
}

/* ============================================
   12. FORMS & INPUTS
   ============================================ */

form {
  max-width: 600px;
}

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

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--color-charcoal);
}

input,
textarea,
select {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-sans);
  font-size: 1rem;
  border: 1px solid var(--color-gray-light);
  border-radius: 4px;
  transition: border-color var(--transition-fast);
  background-color: white;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-red-primary);
  box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

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

/* ============================================
   13. FOOTER
   ============================================ */

footer {
  background-color: var(--color-charcoal);
  color: var(--color-cream);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-3xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: var(--color-cream);
  margin-bottom: var(--spacing-md);
  font-size: 1.1rem;
}

.footer-section p {
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: var(--color-cream);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

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

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

.social-links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.social-links a:hover {
  background-color: var(--color-red-primary);
  transform: translateY(-2px);
}

/* ============================================
   14. RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
  :root {
    --spacing-3xl: 3rem;
    --container-padding: 1.5rem;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  nav ul {
    gap: var(--spacing-md);
  }
  
  nav a {
    font-size: 0.85rem;
  }
  
  .hero {
    min-height: 500px;
  }
  
  .hero-background {
    width: 100%;
    clip-path: polygon(0 20%, 100% 0%, 100% 100%, 0% 100%);
    opacity: 0.5;
  }
  
  .hero-content {
    max-width: 100%;
    padding-right: 0;
    z-index: 20;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-2xl: 2rem;
    --spacing-lg: 1.5rem;
    --container-padding: 1rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  h3 {
    font-size: 1.25rem;
  }
  
  .header-container {
    padding: var(--spacing-md) var(--container-padding);
  }
  
  .logo {
    font-size: 1.25rem;
  }
  
  nav ul {
    display: none;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .hero {
    min-height: 400px;
  }
  
  .hero h1 {
    font-size: 1.75rem;
  }
  
  .hero .subtitle {
    font-size: 1rem;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   15. UTILITY CLASSES
   ============================================ */

.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); }

.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); }

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

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

.text-red { color: var(--color-red-primary); }
.text-gray { color: var(--color-gray-medium); }
.text-light { color: var(--color-gray-light); }

.bg-cream { background-color: var(--color-cream); }
.bg-off-white { background-color: var(--color-off-white); }
.bg-red-light { background-color: rgba(196, 30, 58, 0.05); }

.hidden {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ============================================
   16. ANIMATIONS
   ============================================ */

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-up {
  animation: fadeInUp 0.6s ease-out;
}

.animate-slide-left {
  animation: slideInLeft 0.6s ease-out;
}

.animate-slide-right {
  animation: slideInRight 0.6s ease-out;
}

/* ============================================
   17. SPECIFIC PAGE STYLES
   ============================================ */

/* About Page */
.timeline {
  position: relative;
  padding: var(--spacing-lg) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-red-primary), transparent);
}

.timeline-item {
  margin-bottom: var(--spacing-2xl);
  position: relative;
}

.timeline-item:nth-child(odd) {
  margin-left: 0;
  margin-right: 50%;
  padding-right: var(--spacing-lg);
  text-align: right;
}

.timeline-item:nth-child(even) {
  margin-left: 50%;
  margin-right: 0;
  padding-left: var(--spacing-lg);
  text-align: left;
}

.timeline-dot {
  position: absolute;
  width: 16px;
  height: 16px;
  background-color: var(--color-red-primary);
  border: 3px solid white;
  border-radius: 50%;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  box-shadow: var(--shadow-md);
}

/* News/Blog Grid */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.news-item {
  background-color: white;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.news-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.news-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

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

.news-date {
  font-size: 0.85rem;
  color: var(--color-gray-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
}

.news-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-charcoal);
}

.news-excerpt {
  font-size: 0.95rem;
  color: var(--color-gray-medium);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.news-link {
  color: var(--color-red-primary);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: gap var(--transition-fast);
}

.news-link:hover {
  gap: 1rem;
}

/* Contact Form */
.contact-section {
  max-width: 800px;
  margin: 0 auto;
}

.form-success {
  background-color: rgba(196, 30, 58, 0.1);
  border-left: 4px solid var(--color-red-primary);
  padding: var(--spacing-lg);
  border-radius: 4px;
  margin-bottom: var(--spacing-lg);
  display: none;
}

.form-success.show {
  display: block;
}

/* Events/Journey */
.event-card {
  background-color: white;
  border-left: 4px solid var(--color-red-primary);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border-radius: 4px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.event-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.event-date {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-red-primary);
  margin-bottom: var(--spacing-sm);
}

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

.event-location {
  font-size: 0.95rem;
  color: var(--color-gray-medium);
  margin-bottom: var(--spacing-md);
}

.event-description {
  font-size: 0.95rem;
  color: var(--color-gray-dark);
  line-height: 1.6;
}

/* Principal Profile */
.profile-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.profile-image {
  position: relative;
}

.profile-image img {
  width: 100%;
  border-radius: 4px;
  box-shadow: var(--shadow-lg);
}

.profile-content h2 {
  color: var(--color-red-primary);
}

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

/* ============================================
   18. PRINT STYLES
   ============================================ */

@media print {
  body {
    background-color: white;
  }
  
  header,
  footer,
  .btn,
  nav {
    display: none;
  }
  
  .section {
    page-break-inside: avoid;
  }
}