/**
 * Blog Page - Modern UI/UX
 * KISNA Institute - Responsive (mobile, tablet, desktop)
 */

/* ========== Blog page body ========== */
body.blog-page {
  overflow-x: hidden;
}

/* ========== Hero / Page Title ========== */
/* Top padding so content is not cut behind fixed navbar */
.blog-page .page-title {
  padding-top: 100px;
  background: linear-gradient(135deg, var(--kisna-primary) 0%, var(--kisna-dark) 50%, #043a0d 100%);
  color: var(--kisna-white);
  position: relative;
  overflow: hidden;
}

.blog-page .page-title::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse 80% 50% at 20% 40%, rgba(255,255,255,0.08) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(255,255,255,0.06) 0%, transparent 50%);
  pointer-events: none;
}

.blog-page .page-title .heading {
  padding: 3.5rem 0 2.5rem;
  position: relative;
  z-index: 1;
}

.blog-page .page-title .heading-title {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.75rem;
  opacity: 0;
  animation: blogHeroTitle 0.8s ease forwards;
}

.blog-page .page-title .heading p {
  color: rgba(255,255,255,0.9);
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
  opacity: 0;
  animation: blogHeroSub 0.8s ease 0.2s forwards;
}

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

@keyframes blogHeroSub {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.blog-page .page-title .breadcrumbs {
  background: rgba(0,0,0,0.2);
  padding: 0.75rem 0;
}

.blog-page .page-title .breadcrumbs a,
.blog-page .page-title .breadcrumbs .current {
  color: rgba(255,255,255,0.9);
}

.blog-page .page-title .breadcrumbs a:hover {
  color: #fff;
}

.blog-page .page-title nav ol li+li::before {
  color: rgba(255,255,255,0.6);
}

/* ========== Search & Filter Section ========== */
.blog-search-filter-section {
  background: linear-gradient(180deg, #f8faf9 0%, #fff 100%);
  padding: 2.25rem 0 2rem;
  margin-bottom: 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  position: relative;
}

.search-container {
  position: relative;
  max-width: 560px;
  margin: 0 auto 1.5rem;
}

.search-input-wrapper {
  position: relative;
}

.search-input {
  width: 100%;
  padding: 1rem 3rem 1rem 1.35rem;
  border: 2px solid #e8ecef;
  border-radius: 999px;
  font-size: 1rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
  background: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}

.search-input:hover {
  border-color: color-mix(in srgb, var(--accent-color), transparent 60%);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 4px 20px color-mix(in srgb, var(--accent-color), transparent 85%);
  transform: translateY(-1px);
}

.search-icon {
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: #6c757d;
  font-size: 1.2rem;
  pointer-events: none;
  transition: color 0.2s ease;
}

.search-input:focus ~ .search-icon,
.search-input:focus + .search-icon {
  color: var(--accent-color);
}

.filter-container {
  max-width: 960px;
  margin: 0 auto;
}

.filter-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--heading-color);
  margin-bottom: 0.75rem;
  display: block;
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.filter-chip {
  padding: 0.5rem 1rem;
  border: 2px solid #e8ecef;
  border-radius: 999px;
  background: #fff;
  color: var(--default-color);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.filter-chip:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px color-mix(in srgb, var(--accent-color), transparent 90%);
}

.filter-chip.active {
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: #fff;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--accent-color), transparent 60%);
}

.filter-chip i {
  font-size: 0.85rem;
}

.results-count {
  text-align: center;
  margin-top: 1.25rem;
  color: var(--default-color);
  font-size: 0.875rem;
}

.results-count strong {
  color: var(--accent-color);
  font-weight: 600;
}

/* ========== Blog Listing Section ========== */
#blog.blog.section {
  padding: 3rem 0 4rem;
  background: #fff;
}

/* ========== Blog Cards ========== */
.blog-item {
  opacity: 1;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.blog-item.fade-out {
  opacity: 0;
  transform: scale(0.96);
  pointer-events: none;
}

.blog-item.fade-in {
  opacity: 1;
  transform: scale(1);
}

.blog-card {
  height: 100%;
  border: 0;
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s ease;
}

.blog-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.12);
}

.blog-card a.card-img-top {
  display: block;
  overflow: hidden;
  position: relative;
}

.blog-card .card-img-top {
  height: 220px;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.blog-card:hover .card-img-top {
  transform: scale(1.06);
}

.blog-card .card-body {
  padding: 1.35rem 1.35rem 1.5rem;
  display: flex;
  flex-direction: column;
}

.blog-category {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  background: color-mix(in srgb, var(--accent-color), transparent 92%);
  color: var(--accent-color);
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  width: fit-content;
}

.blog-card .card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.blog-card .card-title a {
  color: var(--heading-color);
  transition: color 0.2s ease;
}

.blog-card .card-title a:hover {
  color: var(--accent-color);
}

.blog-excerpt {
  color: var(--default-color);
  line-height: 1.65;
  font-size: 0.9rem;
  flex-grow: 1;
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card .btn-outline-primary {
  align-self: flex-start;
  border-radius: 999px;
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.blog-card:hover .btn-outline-primary {
  transform: translateX(4px);
}

/* ========== No Results ========== */
.no-results {
  text-align: center;
  padding: 3.5rem 1.5rem;
  display: none;
}

.no-results.show {
  display: block;
  animation: noResultsIn 0.4s ease;
}

@keyframes noResultsIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.no-results-icon {
  font-size: 3.5rem;
  color: #dee2e6;
  margin-bottom: 1rem;
  animation: noResultsIcon 2s ease-in-out infinite;
}

@keyframes noResultsIcon {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.no-results h4 {
  color: var(--heading-color);
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.no-results p {
  color: var(--default-color);
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
}

.no-results .btn-primary {
  border-radius: 999px;
  padding: 0.6rem 1.25rem;
}

/* ========== Responsive: Tablet ========== */
@media (max-width: 991px) {
  .blog-page .page-title {
    padding-top: 110px;
  }
  .blog-page .page-title .heading {
    padding: 2.75rem 0 2rem;
  }

  .blog-card .card-img-top {
    height: 200px;
  }

  #blog.blog.section {
    padding: 2.5rem 0 3rem;
  }

  .blog-search-filter-section {
    padding: 1.75rem 0 1.5rem;
  }
}

/* ========== Responsive: Mobile ========== */
@media (max-width: 767px) {
  .blog-page .page-title {
    padding-top: 120px;
  }
  .blog-page .page-title .heading {
    padding: 2.25rem 0 1.75rem;
  }

  .blog-page .page-title .heading-title {
    font-size: 1.5rem;
  }

  .search-container {
    max-width: 100%;
    padding: 0 0.75rem;
    margin-bottom: 1.25rem;
  }

  .search-input {
    padding: 0.9rem 2.75rem 0.9rem 1rem;
    font-size: 0.95rem;
  }

  .filter-chips {
    justify-content: flex-start;
    gap: 0.4rem;
    padding: 0 0.25rem;
  }

  .filter-chip {
    font-size: 0.8rem;
    padding: 0.4rem 0.85rem;
  }

  .filter-label {
    padding: 0 0.25rem;
  }

  .blog-card .card-img-top {
    height: 200px;
  }

  .blog-card .card-body {
    padding: 1.15rem 1.15rem 1.25rem;
  }

  .blog-card .card-title {
    font-size: 1.05rem;
  }

  .blog-excerpt {
    -webkit-line-clamp: 2;
    font-size: 0.875rem;
  }

  #blog.blog.section {
    padding: 2rem 0 2.5rem;
  }

  .blog-search-filter-section {
    padding: 1.5rem 0 1.25rem;
  }

  .no-results {
    padding: 2.5rem 1rem;
  }
}

/* ========== AOS stagger (optional - works with data-aos-delay) ========== */
.blog-item[data-aos] {
  overflow: visible;
}

/* ========== Reduced motion ========== */
@media (prefers-reduced-motion: reduce) {
  .blog-page .page-title .heading-title,
  .blog-page .page-title .heading p {
    animation: none;
    opacity: 1;
  }

  .blog-card,
  .blog-card .card-img-top,
  .filter-chip,
  .search-input {
    transition-duration: 0.01ms;
  }

  .no-results-icon {
    animation: none;
  }
}