/* freeCodeCamp-inspired styling for DataEngineeringWithAWS */

:root {
  --dark-navy: #0a0a23;
  --light-navy: #1b1b32;
  --blue: #198eee;
  --yellow: #f1be32;
  --gray-00: #ffffff;
  --gray-05: #f5f6f7;
  --gray-10: #dfdfe2;
  --gray-15: #d0d0d5;
  --gray-45: #858591;
  --gray-75: #3b3b4f;
  --gray-80: #2a2a40;
  --gray-85: #1a1a2e;
  --gray-90: #0a0a23;
  --font-family: 'Lato', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-family-mono: 'Roboto Mono', 'SF Mono', Monaco, Consolas, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--gray-90);
  background: var(--gray-00);
}

/* Links */
a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-top: 1.8rem;
  margin-bottom: 0.8rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-90);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin: 0 0 1.5rem;
}

ul, ol {
  margin: 0 0 1.5rem;
  padding-left: 2rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Code */
code {
  font-family: var(--font-family-mono);
  font-size: 0.875rem;
  background: var(--gray-05);
  padding: 0.2rem 0.4rem;
  border-radius: 0.25rem;
  color: var(--gray-75);
}

pre {
  background: var(--dark-navy);
  color: var(--gray-05);
  padding: 1.25rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  font-size: 0.875rem;
  line-height: 1.6;
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

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

/* Header */
.site-header {
  background: var(--dark-navy);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.site-header .container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 38px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-text {
  color: var(--gray-00);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.main-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0;
}

.nav-links li {
  margin: 0;
}

.nav-links a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--gray-00);
  font-size: 0.875rem;
  font-weight: 400;
  text-decoration: none;
  transition: background-color 0.2s;
}

.nav-links a:hover {
  background: var(--light-navy);
  text-decoration: none;
}

/* Container */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Main Content */
.main-content {
  min-height: calc(100vh - 200px);
}

/* Homepage */
.homepage {
  padding: 3rem 1rem;
}

.hero {
  text-align: center;
  padding: 3rem 0 4rem;
  border-bottom: 1px solid var(--gray-10);
  margin-bottom: 3rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: 2.5rem;
  color: var(--gray-90);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--gray-45);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Section Titles */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--gray-10);
}

.section-header h2 {
  margin: 0;
  font-size: 1.5rem;
}

.section-header a {
  font-size: 0.875rem;
  color: var(--gray-45);
}

.recent-posts h2,
.tools-preview h2 {
  margin-top: 0;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--gray-10);
}

/* Post List / Cards */
.post-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.post-card {
  background: var(--gray-00);
  border-radius: 0.5rem;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.post-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.post-card h2,
.post-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  line-height: 1.3;
}

.post-card h2 a,
.post-card h3 a {
  color: var(--gray-90);
  text-decoration: none;
}

.post-card h2 a:hover,
.post-card h3 a:hover {
  color: var(--blue);
  text-decoration: none;
}

.post-excerpt {
  color: var(--gray-45);
  font-size: 0.9375rem;
  line-height: 1.5;
  margin: 0 0 1rem;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: var(--gray-45);
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  background: var(--gray-05);
  color: var(--gray-75);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.view-all {
  display: inline-block;
  margin-top: 2rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--blue);
}

/* Posts Page */
.posts-page,
.tools-page,
.about-page {
  padding: 2rem 1rem 4rem;
}

.page-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--gray-10);
}

.page-header h1 {
  margin: 0 0 0.5rem;
}

.page-description {
  color: var(--gray-45);
  font-size: 1.0625rem;
  margin: 0;
}

/* Article / Single Post */
.post {
  max-width: 740px;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
}

.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--gray-10);
}

.post-title {
  margin: 0 0 1rem;
  font-size: 2.25rem;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.post-header .post-meta {
  margin-bottom: 1rem;
}

.post-header .post-tags {
  margin-top: 1rem;
}

.post-content {
  font-size: 1.0625rem;
  line-height: 1.75;
}

.post-content h2 {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-10);
}

.post-content h3 {
  margin-top: 2rem;
}

.post-content p {
  margin: 0 0 1.5rem;
}

.post-content ul,
.post-content ol {
  margin: 0 0 1.5rem;
}

.post-content li {
  margin-bottom: 0.5rem;
}

.post-content blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--yellow);
  background: var(--gray-05);
  font-style: italic;
}

.post-content blockquote p:last-child {
  margin-bottom: 0;
}

.post-sources {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--gray-10);
}

.post-sources h2 {
  border: none;
  padding: 0;
  margin-top: 0;
  font-size: 1.25rem;
}

.post-sources ul {
  padding-left: 1.25rem;
}

/* Tools Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.tool-card {
  padding: 1.5rem;
  background: var(--gray-05);
  border-radius: 0.5rem;
  transition: background-color 0.2s;
}

.tool-card:hover {
  background: var(--gray-10);
}

.tool-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
}

.tool-card p {
  margin: 0;
  color: var(--gray-45);
  font-size: 0.9375rem;
}

/* About Page */
.about-content {
  max-width: 740px;
}

.about-content h2 {
  margin-top: 2rem;
  font-size: 1.375rem;
}

.about-content p {
  font-size: 1.0625rem;
  line-height: 1.75;
}

/* Footer */
.site-footer {
  background: var(--dark-navy);
  color: var(--gray-15);
  margin-top: 4rem;
  padding: 0;
}

.site-footer .container {
  max-width: 1400px;
  padding: 2.5rem 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer-section h4 {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  color: var(--gray-00);
  font-weight: 700;
}

.footer-section p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--gray-15);
}

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

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

.footer-section a {
  color: var(--gray-15);
  font-size: 0.875rem;
  text-decoration: none;
}

.footer-section a:hover {
  color: var(--gray-00);
  text-decoration: underline;
}

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-80);
  font-size: 0.8125rem;
  color: var(--gray-45);
}

.footer-bottom p {
  margin: 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border-radius: 0.25rem;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s, opacity 0.2s;
}

.btn-primary {
  background: var(--yellow);
  color: var(--gray-90);
}

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

.btn-secondary {
  background: var(--gray-00);
  color: var(--gray-90);
  border: 2px solid var(--gray-10);
}

.btn-secondary:hover {
  background: var(--gray-05);
  text-decoration: none;
}

/* Code Highlighting */
.highlight {
  background: var(--dark-navy);
  border-radius: 0.5rem;
  overflow-x: auto;
}

.highlight pre {
  margin: 0;
  padding: 1.25rem;
}

/* Responsive */
@media (max-width: 768px) {
  html {
    font-size: 16px;
  }

  .site-header .container {
    height: auto;
    padding: 0.75rem 1rem;
    flex-direction: column;
    gap: 0.5rem;
  }

  .main-nav {
    flex-direction: column;
    gap: 0.5rem;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .post-title {
    font-size: 1.75rem;
  }

  .post-list {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* Print styles */
@media print {
  .site-header,
  .site-footer,
  .nav-links {
    display: none;
  }

  .post {
    max-width: 100%;
    padding: 0;
  }

  a {
    color: inherit;
    text-decoration: underline;
  }
}