/* ============================================
   SEKCJA ARTYKUŁÓW - KOMPLETNE STYLE CSS
   Dla: udraznianiekanalizacji.eu
   ============================================ */

/* ===== ZMIENNE CSS ===== */
:root {
  --primary-color: #0066cc;
  --primary-dark: #0052a3;
  --primary-light: #e6f0ff;
  --secondary-color: #f39c12;
  --text-dark: #1a1a1a;
  --text-gray: #666666;
  --text-light: #999999;
  --border-color: #e0e0e0;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius: 8px;
  --spacing-xs: 5px;
  --spacing-sm: 10px;
  --spacing-md: 15px;
  --spacing-lg: 20px;
  --spacing-xl: 30px;
  --spacing-2xl: 40px;
  --spacing-3xl: 60px;
}

/* ===== SEKCJA GŁÓWNA ARTYKUŁÓW ===== */
.articles-section {
  margin: var(--spacing-3xl) 0;
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-white) 100%);
  position: relative;
  overflow: hidden;
}

.articles-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.articles-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ===== NAGŁÓWEK SEKCJI ===== */
.articles-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  animation: fadeInDown 0.6s ease-out;
}

.articles-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
  line-height: 1.3;
  letter-spacing: -0.5px;
}

.articles-header h2::before {
  content: '📚 ';
  margin-right: 10px;
}

.articles-header p {
  font-size: 16px;
  color: var(--text-gray);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ===== PRZYCISK WSZYSTKIE ARTYKUŁY ===== */
.view-all-articles {
  display: inline-block;
  padding: 12px 30px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--bg-white);
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.view-all-articles::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  transition: left 0.3s ease;
}

.view-all-articles:hover::before {
  left: 100%;
}

.view-all-articles:hover {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.view-all-articles:active {
  transform: translateY(0);
}

/* ===== GRID ARTYKUŁÓW ===== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

/* ===== KARTA ARTYKUŁU ===== */
.article-card {
  background: var(--bg-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color);
  animation: fadeInUp 0.6s ease-out;
}

.article-card:nth-child(1) { animation-delay: 0.1s; }
.article-card:nth-child(2) { animation-delay: 0.2s; }
.article-card:nth-child(3) { animation-delay: 0.3s; }
.article-card:nth-child(4) { animation-delay: 0.4s; }
.article-card:nth-child(5) { animation-delay: 0.5s; }
.article-card:nth-child(6) { animation-delay: 0.1s; }
.article-card:nth-child(7) { animation-delay: 0.2s; }
.article-card:nth-child(8) { animation-delay: 0.3s; }
.article-card:nth-child(9) { animation-delay: 0.4s; }
.article-card:nth-child(10) { animation-delay: 0.5s; }

.article-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

/* ===== OBRAZ ARTYKUŁU ===== */
.article-image {
  width: 100%;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-light) 0%, #e8eef5 100%);
  position: relative;
}

.article-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0) 0%, rgba(0, 102, 204, 0.1) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.article-card:hover .article-image::after {
  opacity: 1;
}

.article-image img {
  width: 100%;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: block;
}

.article-card:hover .article-image img {
  transform: scale(1.08) rotate(1deg);
}

/* ===== ZAWARTOŚĆ ARTYKUŁU ===== */
.article-content {
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-content h3 {
  font-size: 18px;
  color: var(--text-dark);
  margin: 0 0 var(--spacing-md) 0;
  font-weight: 700;
  line-height: 1.4;
  transition: color 0.3s ease;
}

.article-card:hover .article-content h3 {
  color: var(--primary-color);
}

/* ===== META INFORMACJE ===== */
.article-meta {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  font-size: 13px;
  color: var(--text-light);
  flex-wrap: wrap;
}

.article-date,
.article-read-time {
  display: flex;
  align-items: center;
  gap: 5px;
}

.article-date::before {
  content: '📅';
  font-size: 14px;
}

.article-read-time::before {
  content: '⏱️';
  font-size: 14px;
}

/* ===== OPIS ARTYKUŁU ===== */
.article-content > p {
  font-size: 14px;
  color: var(--text-gray);
  margin: 0 0 var(--spacing-md) 0;
  line-height: 1.6;
}

/* ===== WYCIĄG Z ARTYKUŁU ===== */
.article-excerpt {
  font-size: 13px;
  color: var(--text-gray);
  margin: var(--spacing-md) 0;
  flex-grow: 1;
  line-height: 1.6;
}

.article-excerpt h4 {
  font-size: 14px;
  color: var(--text-dark);
  margin: var(--spacing-md) 0 var(--spacing-sm) 0;
  font-weight: 600;
}

.article-excerpt ul {
  margin: var(--spacing-sm) 0;
  padding-left: 20px;
}

.article-excerpt li {
  margin: 5px 0;
  line-height: 1.5;
}

.article-excerpt strong {
  color: var(--primary-color);
  font-weight: 600;
}

/* ===== LINK DO ARTYKUŁU ===== */
.article-link {
  display: inline-block;
  margin-top: var(--spacing-md);
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  position: relative;
  padding-bottom: 2px;
}

.article-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

.article-link:hover {
  color: var(--primary-dark);
}

.article-link:hover::after {
  width: 100%;
}

/* ===== SEKCJA ARCHIWUM ARTYKUŁÓW ===== */
.articles-archive-section {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-light);
}

.articles-archive-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ===== NAGŁÓWEK ARCHIWUM ===== */
.archive-header {
  margin-bottom: var(--spacing-2xl);
  animation: fadeInDown 0.6s ease-out;
}

.archive-intro {
  font-size: 16px;
  color: var(--text-gray);
  line-height: 1.7;
  margin-bottom: var(--spacing-xl);
  background: var(--bg-white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--primary-color);
}

/* ===== FILTRY ARCHIWUM ===== */
.archive-filters {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-xl);
}

.filter-btn {
  padding: 10px 20px;
  border: 2px solid var(--border-color);
  background: var(--bg-white);
  border-radius: 25px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-gray);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.filter-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: var(--primary-color);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.4s ease, height 0.4s ease;
  z-index: -1;
}

.filter-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.filter-btn:hover::before {
  width: 300px;
  height: 300px;
}

.filter-btn.active {
  border-color: var(--primary-color);
  background: var(--primary-color);
  color: var(--bg-white);
  box-shadow: var(--shadow-md);
}

.filter-btn.active::before {
  display: none;
}

/* ===== LISTA ARTYKUŁÓW ARCHIWUM ===== */
.articles-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* ===== ARTYKUŁ W ARCHIWUM ===== */
.archive-article {
  background: var(--bg-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
  animation: fadeInUp 0.6s ease-out;
}

.archive-article:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-color);
}

.article-item {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
}

/* ===== OBRAZ W ARCHIWUM ===== */
.article-item-image {
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius);
}

.article-item-image img {
  width: 150px;
  height: 120px;
  object-fit: cover;
  transition: transform 0.4s ease;
  display: block;
}

.archive-article:hover .article-item-image img {
  transform: scale(1.1) rotate(2deg);
}

.article-item-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0) 0%, rgba(0, 102, 204, 0.2) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.archive-article:hover .article-item-image::after {
  opacity: 1;
}

/* ===== ZAWARTOŚĆ ARTYKUŁU W ARCHIWUM ===== */
.article-item-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.article-item-content h3 {
  margin: 0 0 var(--spacing-md) 0;
  font-size: 18px;
  font-weight: 700;
}

.article-item-content h3 a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
  position: relative;
}

.article-item-content h3 a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

.article-item-content h3 a:hover {
  color: var(--primary-dark);
}

.article-item-content h3 a:hover::after {
  width: 100%;
}

/* ===== META INFORMACJE W ARCHIWUM ===== */
.article-item-meta {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  font-size: 13px;
  color: var(--text-light);
  flex-wrap: wrap;
  align-items: center;
}

.article-item-meta .date::before {
  content: '📅 ';
  margin-right: 5px;
}

.article-item-meta .read-time::before {
  content: '⏱️ ';
  margin-right: 5px;
}

.article-item-meta .category {
  background: var(--primary-light);
  color: var(--primary-color);
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 12px;
  border: 1px solid var(--primary-color);
}

/* ===== OPIS W ARCHIWUM ===== */
.article-item-content > p {
  font-size: 14px;
  color: var(--text-gray);
  margin: 0;
  line-height: 1.6;
}

/* ===== ANIMACJE ===== */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ===== RESPONSYWNOŚĆ - TABLET ===== */
@media (max-width: 768px) {
  :root {
    --spacing-2xl: 30px;
    --spacing-3xl: 40px;
  }

  .articles-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
  }

  .articles-header h2 {
    font-size: 26px;
  }

  .articles-header p {
    font-size: 15px;
  }

  .article-card {
    margin-bottom: var(--spacing-sm);
  }

  .article-image {
    height: 180px;
  }

  .article-content {
    padding: var(--spacing-lg);
  }

  .article-item {
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
  }

  .article-item-image img {
    width: 120px;
    height: 100px;
  }

  .article-item-content h3 {
    font-size: 16px;
  }

  .archive-filters {
    gap: var(--spacing-xs);
  }

  .filter-btn {
    padding: 8px 16px;
    font-size: 13px;
  }
}

/* ===== RESPONSYWNOŚĆ - MOBILE ===== */
@media (max-width: 480px) {
  :root {
    --spacing-xl: 15px;
    --spacing-2xl: 20px;
    --spacing-lg: 15px;
  }

  .articles-section {
    margin: var(--spacing-2xl) 0;
    padding: var(--spacing-xl) 0;
  }

  .articles-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .articles-header h2 {
    font-size: 20px;
    margin-bottom: var(--spacing-sm);
  }

  .articles-header h2::before {
    display: none;
  }

  .articles-header p {
    font-size: 14px;
    margin-bottom: var(--spacing-lg);
  }

  .view-all-articles {
    padding: 10px 20px;
    font-size: 13px;
  }

  .article-card {
    border-radius: 6px;
  }

  .article-image {
    height: 160px;
  }

  .article-content {
    padding: var(--spacing-lg);
  }

  .article-content h3 {
    font-size: 16px;
    margin-bottom: var(--spacing-sm);
  }

  .article-meta {
    gap: var(--spacing-md);
    font-size: 12px;
  }

  .article-content > p {
    font-size: 13px;
    margin-bottom: var(--spacing-sm);
  }

  .article-excerpt {
    font-size: 12px;
    margin: var(--spacing-sm) 0;
  }

  .article-excerpt h4 {
    font-size: 13px;
    margin: var(--spacing-sm) 0 var(--spacing-xs) 0;
  }

  .article-link {
    font-size: 13px;
    margin-top: var(--spacing-sm);
  }

  .article-item {
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
  }

  .article-item-image img {
    width: 100%;
    height: 200px;
  }

  .article-item-content h3 {
    font-size: 16px;
  }

  .article-item-meta {
    gap: var(--spacing-md);
    font-size: 12px;
    flex-direction: column;
    align-items: flex-start;
  }

  .article-item-content > p {
    font-size: 13px;
  }

  .archive-intro {
    padding: var(--spacing-lg);
    font-size: 14px;
  }

  .archive-filters {
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
  }

  .filter-btn {
    padding: 8px 14px;
    font-size: 12px;
    border-radius: 20px;
  }

  .articles-archive-container {
    padding: 0 var(--spacing-md);
  }
}

/* ===== DARK MODE (Opcjonalnie) ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --text-dark: #f0f0f0;
    --text-gray: #b0b0b0;
    --text-light: #808080;
    --bg-light: #1a1a1a;
    --bg-white: #2a2a2a;
    --border-color: #404040;
  }

  .article-card,
  .archive-article,
  .archive-intro,
  .filter-btn {
    background: var(--bg-white);
  }

  .articles-section {
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
  }

  .articles-archive-section {
    background: var(--bg-light);
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .articles-section {
    margin: 0;
    padding: 0;
    background: none;
  }

  .article-card {
    page-break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .article-link {
    text-decoration: underline;
  }

  .view-all-articles {
    display: none;
  }
}

/* ===== ACCESSIBILITY ===== */
.article-card:focus-within {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.filter-btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.article-link:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* ===== PREFERS REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== HOVER STATES ===== */
@media (hover: hover) {
  .article-card:hover {
    transform: translateY(-8px);
  }

  .filter-btn:hover {
    transform: translateY(-2px);
  }

  .article-link:hover {
    color: var(--primary-dark);
  }
}

/* ===== LOADING ANIMATION ===== */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.article-card.loading {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ===== SCROLL ANIMATIONS ===== */
.article-card {
  opacity: 0;
  animation: fadeInUp 0.6s ease-out forwards;
}

.articles-list .archive-article {
  opacity: 0;
  animation: fadeInUp 0.6s ease-out forwards;
}

/* ===== UTILITY CLASSES ===== */
.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.p-lg {
  padding: var(--spacing-lg);
}

.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

/* ===== SMOOTH SCROLLING ===== */
html {
  scroll-behavior: smooth;
}

/* ===== FOCUS VISIBLE ===== */
:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ===== Nadpisanie rozmiaru zdjęcia w pojedynczym artykule ===== */

.blog-article .article-image {
  height: auto;       /* bez zablokowanych 200px */
  max-height: none;
  overflow: visible;
}

.blog-article .article-image img {
  width: 100%;
  height: auto;       /* zachowujemy proporcje 800x450 */
  object-fit: contain; /* albo cover, jeśli wolisz przycięte brzegi */
}