/**
 * Pets Into Blog - Styles
 * Clean, responsive design compatible with WordPress
 */

:root {
  --primary-color: #FE540B;
  --primary-gradient: linear-gradient(180deg, #FE540B 25%, #FF7235 100%);
  --text-dark: #2F3036;
  --text-medium: #494A50;
  --text-light: #FFFFFF;
  --bg-light: #F8F9FA;
  --border-color: #E0E0E0;
  --spacing-unit: 8px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans Thai", "LINE Seed Sans TH App", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: #FFFFFF;
}

/* Container & Layout */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 calc(var(--spacing-unit) * 10);
}

/* Hero Header */
.blog-hero {
  position: static;
  border: none;
  padding: calc(var(--spacing-unit) * 10) calc(var(--spacing-unit) * 10);
  text-align: center;
  margin-bottom: calc(var(--spacing-unit) * 8);
}

.blog-hero-content {
  max-width: 1280px;
  margin: 0 auto;
}

.blog-hero-title {
  font-size: 3rem;
  font-weight: 800;
  margin: 0 0 calc(var(--spacing-unit) * 2) 0;
  color: var(--text-dark);
  line-height: 1.2;
}

.blog-hero-subtitle {
  font-size: 1.8rem;
  font-weight: 600;
  margin: 0 0 calc(var(--spacing-unit) * 2) 0;
  color: var(--primary-color);
}

.blog-hero-description {
  font-size: 1.1rem;
  margin: 0;
  color: var(--text-medium);
  line-height: 1.6;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Header */
.blog-header {
  text-align: center;
  padding: calc(var(--spacing-unit) * 8) 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: calc(var(--spacing-unit) * 6);
}

.blog-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: calc(var(--spacing-unit) * 1);
  color: var(--text-dark);
}

.blog-header h1 a {
  color: var(--text-dark);
  text-decoration: none;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.blog-subtitle {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.site-description {
  font-size: 1.1rem;
  color: var(--text-medium);
  margin: 0;
  line-height: 1.6;
}

/* Search & Filter Section */
.search-filter-section {
  margin-bottom: calc(var(--spacing-unit) * 6);
}

.search-filter-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: calc(var(--spacing-unit) * 2);
  flex-wrap: wrap;
}

.search-input-wrapper {
  display: flex;
  justify-content: center;
  position: relative;
  min-width: 250px;
  flex: 0 1 auto;
}

.search-icon {
  position: absolute;
  left: calc(var(--spacing-unit) * 2);
  top: 50%;
  transform: translateY(-50%);
  width: 1.2rem;
  height: 1.2rem;
  pointer-events: none;
  transition: filter 0.3s ease;
  filter: invert(62%) sepia(8%) saturate(560%) hue-rotate(186deg) brightness(95%) contrast(88%);
}

.search-input {
  width: 100%;
  padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 5);
  font-size: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: white;
  color: var(--text-dark);
  transition: all 0.3s ease;
  font-family: inherit;
}

.search-input::placeholder {
  color: var(--text-medium);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 2px 12px rgba(254, 84, 11, 0.15);
}

.search-input:focus ~ .search-icon {
  filter: invert(35%) sepia(79%) saturate(2059%) hue-rotate(8deg) brightness(104%) contrast(100%);
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: calc(var(--spacing-unit) * 1.5);
  flex: 0 1 auto;
}

.filter-btn {
  padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid var(--primary-color);
  background: transparent;
  color: var(--primary-color);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

.filter-btn:hover {
  background: var(--primary-color);
  color: var(--text-light);
  transform: translateY(-2px);
}

.filter-btn.active {
  background: var(--primary-gradient);
  color: var(--text-light);
  border-color: var(--primary-color);
}

/* Posts Grid */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: calc(var(--spacing-unit) * 3);
  margin-bottom: calc(var(--spacing-unit) * 8);
}

.post-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-light);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(254, 84, 11, 0.1);
}

.post-card-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.post-card-content {
  padding: calc(var(--spacing-unit) * 2.5);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.post-card-date {
  font-size: 0.9rem;
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: calc(var(--spacing-unit) * 1);
}

.post-card-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: calc(var(--spacing-unit) * 1.5);
  line-height: 1.4;
}

.post-card-title a {
  color: var(--text-dark);
  text-decoration: none;
}

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

.post-card-excerpt {
  color: var(--text-medium);
  font-size: 0.95rem;
  margin-bottom: calc(var(--spacing-unit) * 2);
  flex-grow: 1;
}

.read-more {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  display: inline-block;
  transition: all 0.3s ease;
}

.read-more:hover {
  transform: translateX(4px);
}

/* Individual Post */
.post {
  background: var(--bg-light);
  padding: calc(var(--spacing-unit) * 4);
  border-radius: 8px;
  margin-bottom: calc(var(--spacing-unit) * 4);
}

.post-meta {
  font-size: 0.95rem;
  color: var(--text-medium);
  margin-bottom: calc(var(--spacing-unit) * 3);
  padding-bottom: calc(var(--spacing-unit) * 2);
  border-bottom: 1px solid var(--border-color);
}

.post-meta time {
  display: block;
}

.post-image {
  margin: calc(var(--spacing-unit) * 3) 0;
  text-align: center;
}

.post-image img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: calc(var(--spacing-unit) * 1);
}

.post-image figcaption {
  font-size: 0.85rem;
  color: var(--text-medium);
  font-style: italic;
}

.post-content {
  font-size: 1.05rem;
  line-height: 1.8;
  margin: calc(var(--spacing-unit) * 3) 0;
}

.post-content p {
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.post-footer {
  margin-top: calc(var(--spacing-unit) * 4);
  padding-top: calc(var(--spacing-unit) * 2);
  border-top: 1px solid var(--border-color);
}

.facebook-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.facebook-link:hover {
  color: #FF7235;
}

/* Navigation */
.post-nav {
  margin: calc(var(--spacing-unit) * 4) 0;
  padding: calc(var(--spacing-unit) * 2) 0;
}

.post-nav a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.post-nav a:hover {
  color: #FF7235;
}

/* Load More Button */
.load-more-container {
  text-align: center;
  padding: calc(var(--spacing-unit) * 4) 0;
  margin-bottom: calc(var(--spacing-unit) * 4);
}

.load-more-btn {
  background: var(--primary-gradient);
  color: var(--text-light);
  border: none;
  padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

.load-more-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(254, 84, 11, 0.3);
}

.load-more-btn:active {
  transform: translateY(0);
}

/* Posts Info */
.posts-info {
  text-align: center;
  padding: calc(var(--spacing-unit) * 3);
  color: var(--text-medium);
  background: var(--bg-light);
  border-radius: 8px;
}

/* Footer */
.blog-footer {
  background: var(--text-dark);
  color: var(--text-light);
  padding: calc(var(--spacing-unit) * 4);
  text-align: center;
  margin-top: calc(var(--spacing-unit) * 8);
}

.blog-footer p {
  margin-bottom: calc(var(--spacing-unit) * 1);
}

.blog-footer a {
  color: var(--primary-color);
  text-decoration: none;
}

.blog-footer a:hover {
  text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .posts-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }

  .blog-header h1 {
    font-size: 2rem;
  }

  .blog-hero-title {
    font-size: 2.2rem;
  }

  .blog-hero-subtitle {
    font-size: 1.4rem;
  }

  .container {
    padding: 0 calc(var(--spacing-unit) * 6);
  }

  .blog-hero {
    padding: calc(var(--spacing-unit) * 8) calc(var(--spacing-unit) * 6);
  }
}

@media (max-width: 768px) {
  .posts-grid {
    grid-template-columns: 1fr;
  }

  .blog-header h1 {
    font-size: 1.6rem;
  }

  .blog-hero-title {
    font-size: 1.8rem;
  }

  .blog-hero-subtitle {
    font-size: 1.2rem;
  }

  .blog-hero-description {
    font-size: 0.95rem;
  }

  .post {
    padding: calc(var(--spacing-unit) * 2);
  }

  .container {
    padding: 0 calc(var(--spacing-unit) * 2);
  }

  .blog-hero {
    padding: calc(var(--spacing-unit) * 6) calc(var(--spacing-unit) * 2);
  }

  html {
    font-size: 14px;
  }

  .search-filter-wrapper {
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 1.5);
  }

  .search-input-wrapper {
    width: 100%;
    min-width: auto;
  }

  .filter-buttons {
    width: 100%;
  }
}

/* Print Styles */
@media print {
  .blog-hero,
  .blog-header,
  .post-nav,
  .blog-footer {
    display: none;
  }

  .post {
    page-break-inside: avoid;
  }
}