/* Ultra-Optimized & Accessible CSS */
:root {
  --bg-color: #ffffff;
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --accent-color: #ea580c; /* Energetic Orange */
  --accent-hover: #c2410c;
  --border-color: #e5e7eb;
  --surface-color: #f9fafb;
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: 0.2s ease-in-out;
  --max-width: 1100px;
}

/* Dark Mode Support for user-friendliness */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #f97316;
    --accent-hover: #fdba74;
    --border-color: #334155;
    --surface-color: #1e293b;
  }
}

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

html {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  scroll-behavior: smooth;
  /* Font smoothing for crisp text */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5 {
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
  font-size: 1.125rem;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition);
}

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

/* Layout */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section {
  padding: 100px 0;
}

/* Header & Nav */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  transition: background-color var(--transition);
}

@media (prefers-color-scheme: dark) {
  .header {
    background-color: rgba(15, 23, 42, 0.9);
  }
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.05em;
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-sub {
  font-size: 0.75rem;
  color: var(--accent-color);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-link {
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-link.active {
  color: var(--accent-color);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.btn-primary {
  background-color: var(--accent-color);
  color: #fff;
  border: none;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(234, 88, 12, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

/* Mobile Menu */
.menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 10px;
}
.menu-btn svg {
  width: 24px;
  height: 24px;
}

/* Hero */
.hero {
  padding: 180px 0 100px;
  text-align: center;
}

.hero-title {
  font-size: clamp(3rem, 6vw, 5rem);
  margin-bottom: 24px;
}

.hero-title span {
  color: var(--accent-color);
}

.hero-desc {
  max-width: 700px;
  margin: 0 auto 40px;
  font-size: 1.25rem;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 80px;
  padding-top: 60px;
  border-top: 1px solid var(--border-color);
}

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

.stat-val {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 8px;
  font-weight: 600;
}

/* Cards (Manifesto & Eligibility) */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 40px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.05);
  border-color: var(--accent-color);
}

.card-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-color);
  margin-bottom: 16px;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

/* Forms */
.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-input {
  width: 100%;
  padding: 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition);
  /* Hardware acceleration for rendering */
  transform: translateZ(0);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.1);
}

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

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 60px 0 40px;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-title {
  font-size: 1.125rem;
  margin-bottom: 24px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Hardware-Accelerated Animations */
.fade-up {
  opacity: 0;
  transform: translateY(20px) translateZ(0);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0) translateZ(0);
}

/* Utilities */
.text-center { text-align: center; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mb-8 { margin-bottom: 32px; }

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--bg-color);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
  }
  .nav-links.active {
    display: flex;
  }
  .menu-btn {
    display: block;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .stats {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}
@media (max-width: 480px) {
  .stats {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
  }
}