/* wplane.com - Optimized CSS for 100/100 PageSpeed */
/* System fonts only - no external font loading */

:root {
  --primary: #2c3e50;
  --secondary: #34495e;
  --accent: #8b4513;
  --light: #ecf0f1;
  --white: #ffffff;
  --grey: #7f8c8d;
  --border: #bdc3c7;
  --success: #27ae60;
  --warning: #f39c12;
  --max-width: 1200px;
  --spacing: 1.5rem;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  margin-bottom: 1rem;
  font-weight: 600;
  color: var(--primary);
}

h1 { font-size: 2.5rem; margin-bottom: 1.5rem; }
h2 { font-size: 2rem; margin-top: 2rem; }
h3 { font-size: 1.5rem; margin-top: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--secondary);
  text-decoration: underline;
}

strong, b {
  font-weight: 600;
}

/* Header */
header {
  background-color: var(--primary);
  color: var(--white);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
  opacity: 0.9;
}

.logo-icon {
  width: 40px;
  height: 40px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  align-items: center;
}

nav a {
  color: var(--white);
  font-weight: 500;
  padding: 0.5rem 0;
  white-space: nowrap;
}

nav a:hover {
  color: var(--light);
  text-decoration: none;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--primary);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  nav.active {
    max-height: 400px;
    border-top: 1px solid var(--secondary);
  }

  nav ul {
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
  }

  nav li {
    width: 100%;
    text-align: center;
    border-bottom: 1px solid var(--secondary);
  }

  nav a {
    display: block;
    padding: 1rem;
  }
}

/* Main Content */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  min-height: calc(100vh - 300px);
}

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

/* Hero Section */
.hero {
  text-align: center;
  padding: 3rem 0;
  background: linear-gradient(135deg, var(--light) 0%, var(--white) 100%);
  margin: -2rem -1.5rem 3rem -1.5rem;
  border-bottom: 3px solid var(--accent);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.hero p {
  font-size: 1.25rem;
  color: var(--secondary);
  max-width: 700px;
  margin: 0 auto 2rem;
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: 2rem;
  margin: 2rem 0;
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* Cards */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.card h3 {
  color: var(--primary);
  margin-top: 0;
  margin-bottom: 0.75rem;
}

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

.card-link {
  display: inline-block;
  color: var(--accent);
  font-weight: 600;
  margin-top: 0.5rem;
}

.card-link:after {
  content: " →";
}

/* Table of Contents */
.toc {
  background: var(--light);
  border-left: 4px solid var(--accent);
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 4px;
}

.toc h2 {
  font-size: 1.25rem;
  margin-top: 0;
  margin-bottom: 1rem;
}

.toc ul {
  list-style: none;
  padding-left: 0;
}

.toc li {
  margin-bottom: 0.5rem;
}

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

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

/* Pro Tip Box */
.pro-tip {
  background: #fff9e6;
  border-left: 4px solid var(--warning);
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 4px;
}

.pro-tip:before {
  content: "💡 Pro Tip";
  display: block;
  font-weight: 700;
  color: var(--warning);
  margin-bottom: 0.5rem;
}

/* Info Box */
.info-box {
  background: #e8f4f8;
  border-left: 4px solid #3498db;
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 4px;
}

.info-box h3 {
  margin-top: 0;
  color: #2980b9;
}

/* Lists */
ul, ol {
  margin-bottom: 1rem;
  padding-left: 2rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

figure {
  margin: 2rem 0;
}

figcaption {
  font-size: 0.9rem;
  color: var(--grey);
  font-style: italic;
  margin-top: 0.5rem;
  text-align: center;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--accent);
  color: var(--white);
  border: none;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: background-color 0.2s;
  text-decoration: none;
}

.btn:hover {
  background-color: var(--secondary);
  color: var(--white);
  text-decoration: none;
}

.btn-secondary {
  background-color: var(--secondary);
}

.btn-secondary:hover {
  background-color: var(--primary);
}

/* Breadcrumbs */
.breadcrumbs {
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  color: var(--grey);
}

.breadcrumbs a {
  color: var(--grey);
}

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

/* FAQ Section */
.faq {
  margin: 3rem 0;
}

.faq-item {
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.5rem;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item h3 {
  color: var(--primary);
  margin-bottom: 0.75rem;
}

/* Related Articles */
.related {
  margin: 3rem 0;
  padding: 2rem;
  background: var(--light);
  border-radius: 8px;
}

.related h2 {
  margin-top: 0;
}

.related ul {
  list-style: none;
  padding-left: 0;
}

.related li {
  margin-bottom: 0.75rem;
}

.related li:before {
  content: "→ ";
  color: var(--accent);
  font-weight: bold;
}

/* Footer */
footer {
  background-color: var(--primary);
  color: var(--light);
  padding: 3rem 0 1rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  color: var(--white);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.footer-section ul {
  list-style: none;
  padding-left: 0;
}

.footer-section li {
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: var(--light);
  text-decoration: none;
}

.footer-section a:hover {
  color: var(--white);
  text-decoration: underline;
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0;
  border-top: 1px solid var(--secondary);
  text-align: center;
  color: var(--light);
  font-size: 0.9rem;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

/* Responsive Typography */
@media (max-width: 768px) {
  html { font-size: 14px; }
  h1 { font-size: 2rem; }
  .hero h1 { font-size: 2.25rem; }
  .hero { padding: 2rem 1rem; }
  main { padding: 1.5rem 1rem; }
}

/* Print Styles */
@media print {
  header, footer, .menu-toggle, .breadcrumbs {
    display: none;
  }

  main {
    max-width: 100%;
    padding: 0;
  }

  a {
    color: var(--primary);
    text-decoration: underline;
  }
}