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

:root {
  /* Premium India Post Red Palette */
  --primary-color: #d32f2f; 
  --primary-light: #ff6659;
  --primary-dark: #9a0007;
  
  /* Neutral Palette */
  --bg-color: #fcfcfd;
  --surface-color: #ffffff;
  --text-main: #1a1a1a;
  --text-muted: #666666;
  
  /* Accents */
  --accent-blue: #1976d2;
  --accent-gold: #fbc02d;
  --success: #10b981;
  --error: #ef4444;

  /* Shadows and Borders */
  --card-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.05), 0 4px 10px -2px rgba(0, 0, 0, 0.02);
  --card-shadow-hover: 0 20px 40px -5px rgba(211, 47, 47, 0.1), 0 8px 16px -4px rgba(211, 47, 47, 0.05);
  --border-radius-lg: 16px;
  --border-radius-md: 12px;
  --border-radius-sm: 8px;
  --border-color: rgba(0, 0, 0, 0.06);

  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
}

body.dark-mode {
  --bg-color: #0b0f19;
  --surface-color: #151b2b;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  
  --primary-color: #ef4444;
  --primary-dark: #b91c1c;

  --border-color: rgba(255, 255, 255, 0.05);
  --card-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 20px 40px -5px rgba(239, 68, 68, 0.15);

  --glass-bg: rgba(21, 27, 43, 0.8);
  --glass-border: rgba(255, 255, 255, 0.05);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

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

#webgl-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), color 0.4s ease;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  color: var(--text-main);
  line-height: 1.2;
}

/* --------------- Navigation (Glassmorphism) --------------- */
nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2.5rem;
  padding: 1rem 2rem;
  
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: all 0.3s ease;
}

nav a {
  text-decoration: none;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-muted);
  position: relative;
  padding: 0.5rem 0;
  transition: color 0.3s ease;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary-color);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s cubic-bezier(0.86, 0, 0.07, 1);
}

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

nav a:hover::after, nav a.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

#darkModeBtn {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.6rem 1.2rem;
  border-radius: 30px;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s ease;
}

#darkModeBtn:hover {
  background: var(--surface-color);
  box-shadow: var(--card-shadow);
  transform: translateY(-2px);
  border-color: var(--primary-color);
}

/* --------------- Header / Hero Section --------------- */
header {
  position: relative;
  padding: 6rem 2rem 5rem;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
  color: white;
  overflow: hidden;
  margin-bottom: 4rem;
}

/* Subtle background pattern/glow */
header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
  pointer-events: none;
}

header h1 {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: white;
  text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

header p {
  font-size: 1.25rem;
  font-weight: 300;
  max-width: 700px;
  margin: 0 auto;
  opacity: 0.95;
}

/* --------------- Main Content Grid --------------- */
main {
  flex: 1;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem 4rem;
}

/* Scheme Cards */
.schemes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.scheme-card {
  background: var(--surface-color);
  padding: 2.5rem;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: flex;
  flex-direction: column;
}

.scheme-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary-color);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.scheme-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--card-shadow-hover);
  border-color: transparent;
}

.scheme-card:hover::before {
  transform: scaleX(1);
}

.scheme-card h2 {
  font-size: 1.4rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  font-weight: 700;
}

.scheme-card p {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 1rem;
}

.scheme-card p:last-child {
  border-bottom: none;
}

.scheme-card p span {
  color: var(--text-muted);
  font-weight: 500;
}

.scheme-card p strong {
  font-family: 'Outfit', sans-serif;
  color: var(--text-main);
  font-weight: 700;
  font-size: 1.1rem;
}

/* --------------- Shared Content Cards --------------- */
.content-card {
  background: var(--surface-color);
  padding: 3rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  max-width: 900px;
  margin: 0 auto 3rem;
  transition: box-shadow 0.3s ease;
}

.content-card:hover {
  box-shadow: var(--card-shadow-hover);
}

/* Calculator specific */
.calculator {
  text-align: center;
}

.calculator h3 {
  font-size: 1.8rem;
  margin-bottom: 2rem;
  color: var(--primary-color);
}

.input-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  max-width: 600px;
  margin: 0 auto;
}

input, textarea {
  width: 100%;
  padding: 1rem 1.5rem;
  background: var(--bg-color);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  flex: 1;
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  color: var(--text-main);
  transition: all 0.3s ease;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(211, 47, 47, 0.1);
  background: var(--surface-color);
}

button {
  padding: 1rem 2rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--border-radius-md);
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(211, 47, 47, 0.2);
}

button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(211, 47, 47, 0.3);
}

button:active {
  transform: translateY(0);
}

#result {
  margin-top: 2rem;
  font-size: 1.4rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  color: var(--primary-color);
  min-height: 2rem;
  transition: color 0.3s ease;
}

/* --------------- About Page --------------- */
.about-content h2 {
  font-size: 2rem;
  color: var(--primary-color);
  margin: 2.5rem 0 1rem;
  position: relative;
  display: inline-block;
}

.about-content h2::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 40px;
  height: 4px;
  background: var(--primary-color);
  border-radius: 2px;
}

.about-content h2:first-child {
  margin-top: 0;
}

.about-content p {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.about-content ul {
  list-style: none;
  padding: 0;
}

.about-content li {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  padding-left: 2rem;
  position: relative;
}

.about-content li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

/* --------------- Contact Page Grid --------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  max-width: 1100px;
  margin: 0 auto;
}

@media (max-width: 860px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .input-group {
      flex-direction: column;
  }
  .input-group button {
      width: 100%;
  }
}

.contact-info {
  margin: 0;
  height: fit-content;
}

.contact-info h2 {
  font-size: 1.3rem;
  color: var(--text-main);
  margin: 1.5rem 0 0.5rem;
}

.contact-info h2:first-child {
  margin-top: 0;
}

.contact-info p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.contact-info strong {
  color: var(--primary-color);
  font-size: 1.2rem;
  font-family: 'Outfit', sans-serif;
}

.form-container {
  margin: 0;
}

.form-container h2 {
  font-size: 1.8rem;
  margin-bottom: 2rem;
  color: var(--primary-color);
}

form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

textarea {
  min-height: 160px;
  resize: vertical;
}

#formStatus {
  margin-top: 1.5rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 1.1rem;
  text-align: center;
}

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

.animate-fade-in {
  opacity: 0;
  animation: fadeInUp 0.7s cubic-bezier(0.165, 0.84, 0.44, 1) forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* Custom Scrollbar for premium feel */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}