/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-accent: #10b981;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', monospace;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --transition: 0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 16px;
}

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

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

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.site-logo:hover { color: var(--color-primary); }

.site-nav { display: flex; gap: 0.25rem; }

.nav-link {
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.06);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition);
  border-radius: 2px;
}

/* ===== Hero ===== */
.hero {
  padding: 6rem 0 5rem;
  text-align: center;
  background: linear-gradient(135deg, #eff6ff 0%, #f0fdf4 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ===== Sections ===== */
.section { padding: 5rem 0; }
.section-alt { background: var(--color-bg-alt); }

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  letter-spacing: -0.02em;
}

/* ===== Cards ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.card h3 { margin-bottom: 0.75rem; font-size: 1.25rem; }
.card h3 a { color: var(--color-text); }
.card h3 a:hover { color: var(--color-primary); }

.card-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.read-more {
  display: inline-block;
  margin-top: 0.75rem;
  font-weight: 600;
  font-size: 0.9rem;
}

/* ===== Page ===== */
.page { padding: 4rem 0; }

.page-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.subtitle {
  color: var(--color-text-muted);
  font-size: 1.15rem;
  margin-top: 0.5rem;
}

.page-meta {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: 0.75rem;
}

.page-content h2 { font-size: 1.75rem; margin: 2.5rem 0 1rem; }
.page-content h3 { font-size: 1.35rem; margin: 2rem 0 0.75rem; }
.page-content p { margin-bottom: 1.25rem; }
.page-content ul, .page-content ol { margin-bottom: 1.25rem; padding-left: 1.5rem; }
.page-content li { margin-bottom: 0.4rem; }
.page-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background: var(--color-bg-alt);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.page-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-bg-alt);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}
.page-content pre {
  background: #1e293b;
  color: #e2e8f0;
  padding: 1.25rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin-bottom: 1.5rem;
}
.page-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* ===== Blog list ===== */
.post-list { display: flex; flex-direction: column; gap: 2rem; }

.post-card {
  padding: 2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.post-card:hover { box-shadow: var(--shadow-lg); }

.post-card h2 { font-size: 1.4rem; margin-bottom: 0.5rem; }
.post-card h2 a { color: var(--color-text); }
.post-card h2 a:hover { color: var(--color-primary); }
.post-card-meta { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 0.5rem; }

/* ===== Contact Form ===== */
.contact-form { max-width: 600px; }

.form-group { margin-bottom: 1.5rem; }
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: border-color var(--transition);
  background: var(--color-bg);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* ===== Game embed ===== */
.game-embed {
  width: 100%;
  min-height: 85vh;
  border: none;
  border-radius: var(--radius);
}

/* ===== Footer ===== */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 4rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid #1e293b;
}

.site-footer h3 {
  color: #f1f5f9;
  font-size: 1rem;
  margin-bottom: 1rem;
}

.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 0.5rem; }
.site-footer a { color: #94a3b8; }
.site-footer a:hover { color: #fff; }

.footer-bottom {
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.85rem;
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 3rem;
  list-style: none;
}

.page-item .page-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}
.page-item.active .page-link,
.page-item .page-link:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .menu-toggle { display: flex; }

  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
  }
  .site-nav.open { display: flex; }

  .hero { padding: 4rem 0 3rem; }
  .hero h1 { font-size: 2rem; }

  .section { padding: 3rem 0; }

  .card-grid { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; }
}