/* Data Engineering School - Custom Enhancements */

/* Main content styling */
main {
  max-width: 900px;
  margin: 0 auto;
}

/* Sections with spacing */
section {
  margin: 3rem 0;
}

/* Hero and feature sections */
.intro-section h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: #58a6ff;
}

.intro-section p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 2rem;
}

/* Card styling for courses and features */
.card {
  background: rgba(22, 27, 34, 0.7);
  border: 1px solid rgba(88, 166, 255, 0.2);
  border-left: 4px solid #58a6ff;
  padding: 1.5rem;
  margin: 1rem 0;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.card:hover {
  border-color: #58a6ff;
  box-shadow: 0 0 15px rgba(88, 166, 255, 0.15);
  transform: translateY(-2px);
}

.card h3 {
  color: #58a6ff;
  margin: 0 0 0.5rem 0;
}

.card h4 {
  color: #79c0ff;
  margin: 1rem 0 0.5rem 0;
}

/* Homepage header */
.home-header {
  margin: 2.5rem 0 3rem;
  text-align: center;
}

.home-title {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 0.6rem;
  background: linear-gradient(135deg, #79c0ff 0%, #58a6ff 55%, #a371f7 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.home-subtitle {
  color: #8b949e;
  font-size: 1.1rem;
  margin: 0 auto;
  max-width: 40ch;
}

.home-trust {
  color: #6e7681;
  font-size: 0.82rem;
  margin: 0.9rem auto 0;
}

.home-trust a {
  color: #79c0ff;
  text-decoration: none;
}

.home-trust a:hover {
  text-decoration: underline;
}

/* Homepage category cards */
.home-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin: 0 0 2rem;
}

.home-card {
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(48, 54, 61, 0.6);
  border-radius: 16px;
  background: rgba(22, 27, 34, 0.55);
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.home-card:hover {
  border-color: rgba(88, 166, 255, 0.55);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px -12px rgba(88, 166, 255, 0.25);
}

.home-card-link {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem 1.35rem 1.1rem;
  text-decoration: none;
  color: inherit;
}

.home-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.home-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(88, 166, 255, 0.22), rgba(163, 113, 247, 0.18));
  color: #79c0ff;
}

.home-card-icon svg {
  width: 20px;
  height: 20px;
}

.home-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #e6edf3;
}

.home-card-desc {
  color: #8b949e;
  font-size: 0.85rem;
  line-height: 1.5;
  min-height: 2.55rem;
}

.home-card-count {
  display: inline-block;
  align-self: flex-start;
  color: #79c0ff;
  background: rgba(88, 166, 255, 0.12);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-top: 0.25rem;
}

/* "Start here" mini list embedded in each card */
.home-card-start {
  flex: 1;
  padding: 0.9rem 1.35rem 1.15rem;
  border-top: 1px solid rgba(48, 54, 61, 0.5);
  background: rgba(13, 17, 23, 0.35);
}

.home-card-start-label {
  display: block;
  color: #6e7681;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.6rem;
}

.home-start-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.home-start-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.4rem 0;
}

.home-start-num {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(88, 166, 255, 0.15);
  color: #58a6ff;
  font-size: 0.68rem;
  font-weight: 700;
}

.home-start-title {
  color: #adbac7;
  font-size: 0.88rem;
  text-decoration: none;
  transition: color 0.15s ease;
}

.home-start-title:hover {
  color: #79c0ff;
}

@media (max-width: 420px) {
  .home-cards {
    grid-template-columns: 1fr;
  }
}

/* Homepage email capture */
.home-subscribe {
  text-align: center;
  margin: 2.5rem 0 1rem;
  padding: 1.75rem 1.5rem;
  border: 1px solid rgba(48, 54, 61, 0.6);
  border-radius: 16px;
  background: rgba(22, 27, 34, 0.55);
}

.home-subscribe-title {
  font-size: 1.15rem;
  margin: 0 0 0.35rem;
}

.home-subscribe-desc {
  color: #8b949e;
  font-size: 0.85rem;
  margin: 0 0 1.1rem;
}

.home-subscribe-form {
  display: flex;
  align-items: stretch;
  gap: 0.6rem;
  max-width: 420px;
  margin: 0 auto;
}

.home-subscribe-form .home-subscribe-input {
  flex: 1 1 auto;
  min-width: 0;
  width: auto;
  margin: 0;
  padding: 0.65rem 0.9rem;
  border: 1px solid #30363d;
  border-radius: 8px;
  background: #0d1117;
  color: #c9d1d9;
  font-size: 0.9rem;
  box-sizing: border-box;
}

.home-subscribe-form .home-subscribe-input:focus {
  outline: none;
  border-color: #58a6ff;
  box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.15);
}

.home-subscribe-form .home-subscribe-btn {
  flex: 0 0 auto;
  width: auto;
  margin: 0;
  padding: 0.65rem 1rem;
  border: none;
  border-radius: 8px;
  background: #58a6ff;
  color: #0d1117;
  font-weight: 700;
  font-size: 0.85rem;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.2s ease;
}

.home-subscribe-form .home-subscribe-btn:hover {
  background: #79c0ff;
}

@media (max-width: 480px) {
  .home-subscribe-form {
    flex-direction: column;
  }

  .home-subscribe-form .home-subscribe-btn {
    width: 100%;
  }
}

/* Homepage course waitlist CTA */
.home-course-cta {
  text-align: center;
  margin: 1.25rem 0 1rem;
  padding: 1.75rem 1.5rem;
  border: 1px solid rgba(163, 113, 247, 0.25);
  border-radius: 16px;
  background: rgba(163, 113, 247, 0.08);
}

.home-course-cta-title {
  font-size: 1.15rem;
  margin: 0 0 0.35rem;
}

.home-course-cta-desc {
  color: #8b949e;
  font-size: 0.85rem;
  margin: 0 auto 1.1rem;
  max-width: 46ch;
}

.home-course-cta-btn {
  display: inline-block;
  background: #a371f7;
  color: #0d1117;
  padding: 0.65rem 1.3rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  transition: background 0.2s ease;
}

.home-course-cta-btn:hover {
  background: #8957e5;
}

/* Meta information */
.meta {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
  color: #8b949e;
  margin: 1rem 0;
  flex-wrap: wrap;
}

.badge {
  background: rgba(13, 17, 23, 0.8);
  padding: 0.3rem 0.8rem;
  border-radius: 4px;
  border-left: 2px solid #58a6ff;
  color: #c9d1d9;
}

/* Button styling */
.btn {
  display: inline-block;
  background: #58a6ff;
  color: #0d1117;
  padding: 0.7rem 1.4rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  border: 2px solid #58a6ff;
  margin-top: 0.5rem;
  cursor: pointer;
}

.btn:hover {
  background: #1f6feb;
  border-color: #1f6feb;
  box-shadow: 0 4px 10px rgba(88, 166, 255, 0.2);
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

/* Learning paths */
.learning-path {
  background: rgba(22, 27, 34, 0.8);
  border: 2px solid rgba(88, 166, 255, 0.3);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.learning-path:hover {
  border-color: #58a6ff;
}

.path-steps {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  margin: 1rem 0;
  font-size: 0.95rem;
}

.path-step {
  background: rgba(13, 17, 23, 0.9);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  border: 1px solid rgba(48, 54, 61, 0.5);
  color: #c9d1d9;
}

.path-step:not(:last-child)::after {
  content: " → ";
  color: #58a6ff;
  margin: 0 0.5rem;
  font-weight: bold;
}

/* Forms */
form {
  background: rgba(22, 27, 34, 0.7);
  padding: 2rem;
  border-radius: 8px;
  border: 1px solid rgba(48, 54, 61, 0.5);
  max-width: 500px;
}

form input,
form textarea {
  width: 100%;
  padding: 0.75rem;
  margin: 0.75rem 0;
  border: 1px solid rgba(48, 54, 61, 0.5);
  border-radius: 4px;
  background: rgba(13, 17, 23, 0.9);
  color: #c9d1d9;
  font-size: 1rem;
}

form input::placeholder {
  color: #8b949e;
}

form input:focus {
  outline: none;
  border-color: #58a6ff;
  box-shadow: 0 0 8px rgba(88, 166, 255, 0.1);
}

form button {
  background: #58a6ff;
  color: #0d1117;
  border: none;
  cursor: pointer;
  font-weight: 600;
  width: 100%;
  padding: 0.75rem;
  border-radius: 4px;
  margin-top: 0.5rem;
  transition: background 0.3s;
}

form button:hover {
  background: #1f6feb;
}

/* Horizontal dividers */
hr, .divider {
  border: none;
  border-top: 1px solid rgba(48, 54, 61, 0.4);
  margin: 2rem 0;
}

/* Code blocks */
pre {
  background: rgba(13, 17, 23, 0.9) !important;
  border: 1px solid rgba(48, 54, 61, 0.6);
  border-left: 4px solid #58a6ff;
  border-radius: 6px;
  padding: 1.25rem;
}

code {
  color: #79c0ff;
}

/* Lists styling */
ul, ol {
  margin: 1.5rem 0;
  padding-left: 2rem;
}

li {
  margin: 0.5rem 0;
  line-height: 1.6;
}

/* Blockquotes */
blockquote {
  border-left: 4px solid #58a6ff;
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
  background: rgba(22, 27, 34, 0.5);
  border-radius: 0 6px 6px 0;
  color: #c9d1d9;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

table thead {
  background: rgba(22, 27, 34, 0.8);
  border-bottom: 2px solid #58a6ff;
}

table th {
  padding: 0.75rem;
  text-align: left;
  color: #58a6ff;
  font-weight: 600;
}

table td {
  padding: 0.75rem;
  border-bottom: 1px solid rgba(48, 54, 61, 0.3);
}

table tr:hover {
  background: rgba(22, 27, 34, 0.4);
}

/* Tags */
.tag, .category {
  background: rgba(22, 27, 34, 0.8);
  color: #58a6ff;
  border: 1px solid #58a6ff;
  padding: 0.3rem 0.8rem;
  border-radius: 4px;
  font-size: 0.85rem;
  margin-right: 0.5rem;
  display: inline-block;
}

/* Responsive design */
@media (max-width: 768px) {
  main {
    padding: 1rem;
  }

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

  .path-steps {
    flex-direction: column;
    align-items: flex-start;
  }

  .path-step:not(:last-child)::after {
    content: "";
    margin: 0;
  }

  .path-step::after {
    content: " ↓";
    display: block;
    color: #58a6ff;
    margin-top: 0.5rem;
  }

  form input, form button {
    font-size: 16px;
  }
}

/* Animations */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card, .learning-path {
  animation: slideIn 0.5s ease-out;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}

/* Subscribe CTA at the end of every post */
.post-subscribe-cta {
  text-align: center;
  margin: 2rem 0 1rem;
  padding: 1.5rem;
  background: rgba(22, 27, 34, 0.7);
  border: 1px solid rgba(88, 166, 255, 0.2);
  border-radius: 8px;
}

.post-subscribe-cta__text {
  margin: 0 0 1rem;
  color: #c9d1d9;
}

.post-subscribe-cta__btn {
  display: inline-block;
  background: #58a6ff;
  color: #0d1117;
  padding: 0.7rem 1.4rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  border: 2px solid #58a6ff;
  transition: all 0.3s;
}

.post-subscribe-cta__btn:hover {
  background: #1f6feb;
  border-color: #1f6feb;
  box-shadow: 0 4px 10px rgba(88, 166, 255, 0.2);
}

/* Course waitlist CTA at the end of every post */
.post-course-cta {
  text-align: center;
  margin: 1rem 0 2rem;
  padding: 1.5rem;
  background: rgba(163, 113, 247, 0.08);
  border: 1px solid rgba(163, 113, 247, 0.25);
  border-radius: 8px;
}

.post-course-cta__text {
  margin: 0 0 1rem;
  color: #c9d1d9;
}

.post-course-cta__btn {
  display: inline-block;
  background: #a371f7;
  color: #0d1117;
  padding: 0.7rem 1.4rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  border: 2px solid #a371f7;
  transition: all 0.3s;
}

.post-course-cta__btn:hover {
  background: #8957e5;
  border-color: #8957e5;
  box-shadow: 0 4px 10px rgba(163, 113, 247, 0.2);
}