/* Variables */
:root {
  --primary: #4a56e2;
  --primary-hover: #3a46d2;
  --secondary: #6c757d;
  --success: #28a745;
  --info: #17a2b8;
  --warning: #ffc107;
  --danger: #dc3545;
  --light: #f8f9fa;
  --dark: #343a40;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;

  --informational: #17a2b8;
  --success-color: #28a745;
  --redirection: #ffc107;
  --client-error: #dc3545;
  --server-error: #6f42c1;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  --border-radius: 4px;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

/* Reset & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  line-height: 1.5;
  color: var(--gray-900);
  margin: 0;
  padding: 0;
  background-color: #f5f7fa;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

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

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

img {
  max-width: 100%;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-top: 0;
  margin-bottom: 1rem;
}

/* Navbar */
.navbar {
  background-color: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 1rem 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--gray-900);
  text-decoration: none;
}

.navbar-brand:hover {
  text-decoration: none;
}

.logo {
  height: 32px;
  margin-right: 0.5rem;
}

.logo.small {
  height: 24px;
}

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

.nav-link {
  color: var(--gray-700);
  margin-left: 1.5rem;
  font-weight: 500;
}

.nav-link:hover {
  color: var(--primary);
  text-decoration: none;
}

/* Hero section */
.hero {
  background: linear-gradient(135deg, #4a56e2 0%, #3a46d2 100%);
  color: white;
  padding: 4rem 0;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1rem;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero .lead {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.search-container {
  display: flex;
  max-width: 500px;
  margin: 0 auto;
}

.status-input {
  flex: 1;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius) 0 0 var(--border-radius);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  outline: none;
}

.status-input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.status-input:focus {
  border-color: rgba(255, 255, 255, 0.4);
}

/* Button styles */
.btn-primary {
  background-color: var(--success);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary:hover {
  background-color: #218838;
}

.btn-secondary {
  background-color: var(--gray-200);
  color: var(--gray-700);
  border: none;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-block;
  margin-right: 0.5rem;
}

.btn-secondary:hover {
  background-color: var(--gray-300);
  color: var(--gray-800);
  text-decoration: none;
}

/* Sections */
.section {
  padding: 4rem 0;
}

.section-alt {
  background-color: var(--gray-100);
}

/* Example cards */
.usage-examples {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.example-card {
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 1.5rem;
  transition: var(--transition);
}

.example-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.code-block {
  background-color: var(--gray-100);
  border-radius: var(--border-radius);
  padding: 1rem;
  margin: 1rem 0;
  overflow-x: auto;
}

.code-block code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.875rem;
  color: var(--gray-800);
}

/* Status categories */
.status-categories {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.category-card {
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 1.5rem;
  border-top: 4px solid var(--primary);
}

.category-informational {
  border-top-color: var(--informational);
}

.category-success {
  border-top-color: var(--success-color);
}

.category-redirection {
  border-top-color: var(--redirection);
}

.category-client-error {
  border-top-color: var(--client-error);
}

.category-server-error {
  border-top-color: var(--server-error);
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.5rem;
  margin-top: 1rem;
}

.status-code-link {
  display: flex;
  flex-direction: column;
  padding: 0.5rem;
  border-radius: var(--border-radius);
  background-color: var(--gray-100);
  transition: var(--transition);
  text-decoration: none;
}

.status-code-link:hover {
  background-color: var(--gray-200);
  text-decoration: none;
}

.status-code-link .code {
  font-weight: 600;
  color: var(--gray-900);
}

.status-code-link .description {
  font-size: 0.75rem;
  color: var(--gray-700);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Code tabs */
.code-tabs {
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  margin-top: 2rem;
}

.tab-headers {
  display: flex;
  border-bottom: 1px solid var(--gray-200);
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  background: none;
  border: none;
  font-weight: 500;
  color: var(--gray-600);
  cursor: pointer;
  transition: var(--transition);
  border-bottom: 2px solid transparent;
}

.tab-btn:hover {
  color: var(--gray-900);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-content {
  padding: 1.5rem;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.tab-pane pre {
  margin: 0;
  background-color: var(--gray-100);
  padding: 1rem;
  border-radius: var(--border-radius);
  overflow-x: auto;
}

.tab-pane code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.875rem;
  color: var(--gray-800);
}

/* Footer */
footer {
  background-color: var(--gray-800);
  color: var(--gray-300);
  padding: 3rem 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

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

.footer-links a {
  color: var(--gray-300);
  transition: var(--transition);
}

.footer-links a:hover {
  color: white;
  text-decoration: none;
}

.separator {
  margin: 0 0.5rem;
  color: var(--gray-600);
}

.copyright {
  color: var(--gray-500);
  font-size: 0.875rem;
}

/* Error page styles */
.error-container {
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 2rem;
  margin-top: 2rem;
}

.text-danger {
  color: var(--danger);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .usage-examples, .status-categories {
    grid-template-columns: 1fr;
  }

  .tab-headers {
    flex-wrap: wrap;
  }

  .tab-btn {
    padding: 0.5rem 1rem;
  }

  .status-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .hero h1 {
    font-size: 2rem;
  }

  .search-container {
    flex-direction: column;
  }

  .status-input {
    border-radius: var(--border-radius) var(--border-radius) 0 0;
  }

  .btn-primary {
    border-radius: 0 0 var(--border-radius) var(--border-radius);
  }

  .nav-links {
    display: none;
  }

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