:root {
  --primary-color: #FF6B6B;
  --secondary-color: #4E878C;
  --bg-color: #0F111A;
  --card-bg: #1A1D2E;
  --card-border: #292D42;
  --text-primary: #F8F9FA;
  --text-secondary: #9DA3B4;
  --accent-amber: #F4A261;
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --gradient: linear-gradient(135deg, #FF6B6B 0%, #F4A261 100%);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.65;
  font-size: 16px;
}

.container {
  width: 90%;
  max-width: 960px;
  margin: 0 auto;
}

/* Header & Nav */
header {
  background: rgba(26, 29, 46, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-group img {
  width: 38px;
  height: 38px;
  border-radius: 9px;
}

.logo-group h1 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  align-items: center;
}

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

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

/* Main Content */
main {
  padding: 3rem 0 5rem 0;
}

.content-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.last-updated {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 2rem;
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(255, 107, 107, 0.1);
  border-radius: 20px;
  border: 1px solid rgba(255, 107, 107, 0.2);
}

h3 {
  font-size: 1.3rem;
  margin: 2rem 0 0.75rem 0;
  color: var(--primary-color);
}

h4 {
  font-size: 1.1rem;
  margin: 1.25rem 0 0.5rem 0;
  color: var(--text-primary);
}

p, li {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

strong {
  color: var(--text-primary);
}

ul, ol {
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

code {
  background: rgba(255, 255, 255, 0.08);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
  color: #F4A261;
}

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

a:hover {
  text-decoration: underline;
}

.alert-box {
  background: rgba(78, 135, 140, 0.12);
  border: 1px solid rgba(78, 135, 140, 0.3);
  border-radius: 10px;
  padding: 1.2rem;
  margin: 1.5rem 0;
}

.alert-box.warning {
  background: rgba(244, 162, 97, 0.12);
  border-color: rgba(244, 162, 97, 0.3);
}

.btn {
  display: inline-block;
  padding: 0.85rem 1.75rem;
  background: var(--gradient);
  color: white;
  font-weight: 700;
  border-radius: 10px;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 107, 107, 0.3);
  text-decoration: none;
}

/* Footer */
footer {
  background: #0B0D14;
  border-top: 1px solid var(--card-border);
  padding: 3rem 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

footer a {
  color: var(--text-secondary);
  margin: 0 0.75rem;
}

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

.footer-links {
  margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
  .content-card {
    padding: 1.5rem;
  }
  .nav ul {
    gap: 1rem;
  }
}