/* ==========================================================================
   Main & Content Layout Styles
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  color: var(--color-dark);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1.25rem;
}

p:last-child {
  margin-bottom: 0;
}

/* Base Buttons */
.btn,
button[type="submit"],
input[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-white);
  background-color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  text-decoration: none;
}

.btn:hover,
button[type="submit"]:hover,
input[type="submit"]:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

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

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

/* Page & Article Layout */
.site-main {
  padding: 3rem 0;
}

.entry-header {
  margin-bottom: 2rem;
}

.entry-title {
  margin-bottom: 0.5rem;
}

.entry-content {
  line-height: 1.75;
}

.entry-content > * + * {
  margin-top: 1.25rem;
}

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

.post-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  display: flex;
  flex-direction: column;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.post-card-image {
  position: relative;
  padding-top: 56.25%; /* 16:9 aspect */
  overflow: hidden;
  background-color: var(--color-bg-light);
}

.post-card-image img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-speed) ease;
}

.post-card:hover .post-card-image img {
  transform: scale(1.03);
}

.post-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.post-card-meta {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.post-card-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.post-card-title a {
  color: var(--color-dark);
}

.post-card-title a:hover {
  color: var(--color-primary);
}

.post-card-excerpt {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 3rem;
}

.pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-speed) ease;
}

.pagination .page-numbers.current,
.pagination .page-numbers:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* 404 Page */
.error-404-container {
  text-align: center;
  padding: 5rem 1rem;
}

.error-404-code {
  font-size: 6rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 1rem;
}