/* Calculator Game - GitHub Pages Shared Styles */

:root {
  --bg-primary: #0A0E1A;
  --bg-secondary: #141929;
  --bg-card: #1A1F33;
  --accent: #FF8C42;
  --accent-hover: #FF9F5F;
  --text-primary: #FFFFFF;
  --text-secondary: #8A8FA3;
  --text-muted: #5A5F73;
  --border: #2A2F43;
  --max-width: 720px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Navigation */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

nav .logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
}

nav .nav-links {
  display: flex;
  gap: 1.5rem;
}

nav .nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

/* Hero section */
.hero {
  text-align: center;
  padding: 3rem 0;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--accent), #FFB347);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.hero .tagline {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 2rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

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

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

/* Feature cards */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 3rem 0;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}

.feature-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--accent);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Content sections */
h1 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 1.35rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

h3 {
  font-size: 1.1rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

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

ul, ol {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.4rem;
}

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

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

a:hover {
  text-decoration: underline;
}

/* Footer */
footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

footer a {
  color: var(--text-secondary);
}

/* FAQ */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

.faq-item h3 {
  margin-top: 0;
  font-size: 1rem;
  color: var(--text-primary);
}

.faq-item p {
  margin-bottom: 0;
  font-size: 0.9rem;
}

/* Last updated badge */
.meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 2rem;
}

/* Responsive */
@media (max-width: 600px) {
  .container {
    padding: 1.25rem 1rem;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  nav .nav-links {
    gap: 1rem;
  }
}