/* =====================================
   GLOBAL TYPOGRAPHY & PAGE BACKGROUND
   ===================================== */
body {
  font-family: ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  color: #111;
  font-size: 18px;
  margin: 0;
  padding: 0;
  background: #e9ecff;
  line-height: 1.6;
}

/* =====================================
   HEADER: LAYOUT, TITLE, TAGLINE
   ===================================== */
header {
  background: linear-gradient(135deg, #4e54c8 0%, #8f94fb 50%, #a7ffeb 100%);
  color: #fff;
  padding: 16px;
  text-align: center;
}

header a {
  color: inherit;
  text-decoration: none;
}
header a:hover {
  text-decoration: underline;
}

header h1,
header a h1,
h1 {
  margin: 0;
  font-size: 40px;
  line-height: 1.2;
}

header p {
  margin: 6px 0 4px;
  font-size: 18px;
}

/* =====================================
   MAIN LAYOUT & CONTENT WRAPPER
   ===================================== */
main {
  padding: 16px 12px 32px;
}

.content-wrapper {
  max-width: 760px;
  margin: 0 auto;
  background: #fdfdfd;
  padding: 24px 20px 28px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.intro {
  text-align: center;
  margin-bottom: 20px;
}

/* =====================================
   HEADINGS
   ===================================== */
h2 {
  margin: 16px 0 10px;
  font-size: 24px;
  text-align: left;
}

.centered-heading {
  text-align: center;
}

h2 a {
  display: inline-block;
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(78, 84, 200, 0.3);
  padding-bottom: 2px;
}
h2 a:hover {
  border-color: rgba(78, 84, 200, 0.9);
}

/* =====================================
   PARAGRAPHS & SPACING
   ===================================== */
p {
  max-width: 700px;
  margin: 0 0 14px;
}

section {
  margin-bottom: 20px;
}

section:last-of-type {
  margin-bottom: 0;
}

section a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

/* =====================================
   BLOG POST LAYOUT (WHITE CARD STYLE)
   ===================================== */
.blog-post {
  max-width: 760px;
  margin: 0 auto 32px;
  background: #ffffff; /* white background */
  padding: 28px 24px;
  border-radius: 16px; /* rounded corners */
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06); /* soft shadow */
  border: 1px solid rgba(78, 84, 200, 0.15); /* subtle purple border */
}

.blog-post h2 {
  margin-top: 0;
  font-size: 26px;
}

.blog-meta {
  margin: 4px 0 16px;
  font-size: 0.9rem;
  opacity: 0.7;
}

/* Subscribe card under blog posts */
.subscribe-section {
  max-width: 760px;
  margin: 0 auto 24px;
  padding: 20px 24px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid rgba(78, 84, 200, 0.15);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.subscribe-section h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 20px;
}

.subscribe-section p {
  margin: 0;
}

/* =====================================
   FOOTER & SOCIAL ICONS
   ===================================== */
footer {
  margin-top: 20px;
  padding: 12px 0;
  background: linear-gradient(135deg, #4e54c8 0%, #8f94fb 50%, #a7ffeb 100%);
  color: #fff;
  text-align: center;
}

footer p {
  margin: 4px auto 0;
}

.social-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
}

.social-links a svg {
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.social-links a:hover svg {
  transform: scale(1.15);
  opacity: 0.85;
}

/* =====================================
   JOURNAL ACCORDION (MDL'S MIND)
   ===================================== */
details {
  margin-bottom: 16px;
  border-radius: 12px;
  background: #fdfdfd;
  border: 1px solid rgba(78, 84, 200, 0.18);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.03);
  overflow: hidden;
}

details > summary {
  padding: 12px 14px;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

details[open] {
  border-color: rgba(78, 84, 200, 0.4);
}

details p {
  padding: 0 14px 12px;
}

/* =====================================
   BOOKSHELF
   ===================================== */
.reading-section {
  padding: 15px;
  margin-top: 20px;
}

.reading-intro {
  margin-top: 0;
  margin-bottom: 16px;
  max-width: 700px;
}

.bookshelf-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.bookshelf-controls label {
  font-size: 0.9rem;
}

#genre-filter {
  font-family: inherit;
  font-size: 0.9rem;
  padding: 4px 6px;
}

.book-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 650px) {
  .book-grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }
}

.book-card {
  border: 1px solid #4e54c8;
  border-radius: 8px;
  padding: 10px 12px;
  background: white;
}

.book-header {
  margin-bottom: 4px;
}

.book-title {
  margin: 0;
  font-size: 1.05rem;
}

.book-author {
  margin: 2px 0 6px;
  font-size: 0.9rem;
  opacity: 0.8;
}

.book-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.book-pill {
  padding: 2px 8px;
  border: 1px solid #4e54c8;
  border-radius: 999px;
  font-size: 0.75rem;
  white-space: nowrap;
}

.book-error {
  color: #b00020;
  margin-top: 12px;
  font-size: 0.85rem;
}

/* =====================================
   MOBILE RESPONSIVE REFINEMENTS
   ===================================== */
@media (max-width: 480px) {

  body {
    font-size: 16px;
  }

  header h1 {
    font-size: 32px;
  }

  header p {
    font-size: 16px;
  }

  .content-wrapper {
    padding: 18px 16px 24px;
  }

  h2 {
    font-size: 21px;
  }

  details > summary {
    padding: 10px 12px;
  }

  footer {
    padding: 14px 0;
  }

  .social-links {
    gap: 16px;
  }

  .blog-post,
  .subscribe-section {
    padding: 20px 16px;
  }
}