/* 
 * Collapsible Archives Timeline Styles
 * Modern, colorful design with smooth animations
 */

/* Accessibility - Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===== ARCHIVES HEADER ===== */
.archives-header {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 2rem;
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
  border-radius: 16px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(102, 126, 234, 0.2);
}

.archives-stats {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: #667eea;
}

.archives-stats i {
  font-size: 1.3rem;
  color: #764ba2;
}

/* ===== TIMELINE CONTAINER ===== */
.timeline-container {
  position: relative;
  padding-left: 2rem;
}

.timeline-container::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, #667eea, #764ba2, #f093fb, #667eea);
  background-size: 100% 400%;
  animation: gradientShift 15s ease infinite;
  border-radius: 4px;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 0%; }
  50% { background-position: 0% 100%; }
}

/* ===== YEAR BLOCK ===== */
.year-block {
  margin-bottom: 2rem;
  position: relative;
}

.year-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.75rem;
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
  border: 2px solid transparent;
}

/* Gradient variations for different years */
.gradient-year-0, .gradient-year-5 {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.gradient-year-1, .gradient-year-6 {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.gradient-year-2, .gradient-year-7 {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.gradient-year-3, .gradient-year-8 {
  background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.gradient-year-4, .gradient-year-9 {
  background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.year-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.year-header:hover::before {
  opacity: 1;
}

.year-header:hover {
  transform: translateX(8px) scale(1.02);
  box-shadow: 
    0 10px 40px rgba(0, 0, 0, 0.2),
    0 0 30px rgba(102, 126, 234, 0.3);
  border-color: rgba(255, 255, 255, 0.3);
}

.year-header.active {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.year-title {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: white;
}

.year-title i {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

.year-header.active .year-title i {
  transform: rotate(90deg);
}

.year-number {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.year-badge {
  padding: 0.4rem 1rem;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  backdrop-filter: blur(10px);
}

.current-badge {
  padding: 0.4rem 1rem;
  background: rgba(255, 255, 255, 0.95);
  color: #667eea;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  animation: pulse 2s ease-in-out infinite;
}

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

/* ===== MONTHS CONTAINER ===== */
.months-container {
  margin-top: 1rem;
  margin-left: 0;
  padding-left: 0.5rem;
  border-left: 3px solid rgba(102, 126, 234, 0.2);
}

.month-block {
  margin-bottom: 1rem;
}

.month-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.875rem 1.25rem;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(250, 250, 250, 0.9));
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.month-header:hover {
  background: linear-gradient(135deg, rgba(255, 255, 255, 1), rgba(245, 245, 250, 1));
  border-color: rgba(102, 126, 234, 0.3);
  transform: translateX(4px);
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.15);
}

.month-header.active {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
  border-color: rgba(102, 126, 234, 0.4);
}

.month-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #333;
  font-weight: 600;
}

.month-title i {
  color: #667eea;
  font-size: 1rem;
}

.month-name {
  font-size: 1.125rem;
  font-weight: 700;
}

.month-badge {
  padding: 0.4rem 1rem;
  background: linear-gradient(135deg, #f093fb, #f5576c);
  color: white;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 800;
  box-shadow: 0 2px 8px rgba(240, 147, 251, 0.4);
  letter-spacing: 0.5px;
}

.current-month-badge {
  padding: 0.25rem 0.75rem;
  background: linear-gradient(135deg, #43e97b, #38f9d7);
  color: white;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== POSTS LIST ===== */
.posts-list {
  margin-top: 0.75rem;
  margin-left: 0.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.post-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1rem 1rem 0.75rem;
  background: white;
  border-radius: 10px;
  text-decoration: none;
  color: #333;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.post-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 4px;
  background: linear-gradient(180deg, #667eea, #764ba2);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.post-item:hover::before {
  transform: scaleY(1);
}

.post-item:hover {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
  border-color: rgba(102, 126, 234, 0.3);
  transform: translateX(8px);
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.15);
}

.post-date {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.post-date .day {
  color: white;
  font-size: 1.5rem;
  font-weight: 900;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.post-content {
  flex: 1;
  min-width: 0;
}

.post-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #333;
  margin: 0 0 0.5rem 0;
  transition: color 0.3s ease;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.post-item:hover .post-title {
  color: #667eea;
}

.post-categories {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.category-tag {
  padding: 0.25rem 0.75rem;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
  color: #667eea;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.post-arrow {
  flex-shrink: 0;
  color: #667eea;
  font-size: 1rem;
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.3s ease;
}

.post-item:hover .post-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ===== NO RESULTS ===== */
/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 768px) {
  .archives-header {
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
  }

  .archives-stats {
    font-size: 0.95rem;
  }

  .archives-stats i {
    font-size: 1.1rem;
  }

  .timeline-container {
    padding-left: 0.5rem;
  }

  .timeline-container::before {
    width: 3px;
  }

  .year-number {
    font-size: 1.5rem;
  }

  .year-badge {
    font-size: 0.75rem;
    padding: 0.3rem 0.75rem;
  }

  .current-badge {
    font-size: 0.7rem;
    padding: 0.3rem 0.75rem;
  }

  .months-container {
    margin-left: 0;
    padding-left: 0.15rem;
  }

  .post-item {
    padding: 0.75rem 0.5rem 0.75rem 0.25rem;
  }

  .post-date {
    width: 45px;
    height: 45px;
  }

  .post-date .day {
    font-size: 1.25rem;
  }

  .post-title {
    font-size: 0.95rem;
  }

  .category-tag {
    font-size: 0.65rem;
    padding: 0.15rem 0.5rem;
    letter-spacing: 0.2px;
  }
}

@media (max-width: 480px) {
  .archives-header {
    padding: 0.75rem;
  }

  .year-header {
    padding: 1rem 1.25rem;
  }

  .year-number {
    font-size: 1.35rem;
  }

  .month-header {
    padding: 0.75rem 1rem 0.75rem 0.25rem;
  }

  .month-name {
    font-size: 1rem;
  }

  .post-item {
    gap: 0.75rem;
    padding: 0.75rem;
  }

  .post-date {
    width: 40px;
    height: 40px;
  }

  .post-date .day {
    font-size: 1.1rem;
  }
}

/* ===== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
  .archives-header {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.15));
    border-color: rgba(102, 126, 234, 0.3);
  }

  .archives-stats {
    color: #a8b4ff;
  }

  .search-input::placeholder {
    color: #666;
  }

  .archives-stats {
    color: #b0b0b0;
  }

  .month-header {
    background: linear-gradient(135deg, rgba(45, 45, 45, 0.95), rgba(35, 35, 35, 0.9));
  }

  .month-header:hover {
    background: linear-gradient(135deg, rgba(55, 55, 55, 1), rgba(45, 45, 45, 1));
  }

  .month-title {
    color: #e0e0e0;
  }

  .post-item {
    background: rgba(45, 45, 45, 0.8);
    color: #e0e0e0;
    border-color: rgba(102, 126, 234, 0.1);
  }

  .post-item:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.15));
    border-color: rgba(102, 126, 234, 0.4);
  }

  .post-title {
    color: #e0e0e0;
  }

  .post-item:hover .post-title {
    color: #8b9eff;
  }

  .no-results p {
    color: #b0b0b0;
  }
}

/* ===== MOBILE RESPONSIVE STYLES ===== */

/* Tablet and below - 768px */
@media (max-width: 768px) {
  .archives-header {
    padding: 0.75rem;
  }

  .archives-stats {
    font-size: 0.9rem;
  }

  .year-header {
    padding: 1rem;
  }

  .year-number {
    font-size: 1.75rem;
  }

  .year-badge {
    font-size: 0.8rem;
    padding: 0.3rem 0.75rem;
  }

  .current-badge {
    font-size: 0.7rem;
    padding: 0.25rem 0.6rem;
  }

  .month-header {
    padding: 0.75rem 1rem;
  }

  .month-name {
    font-size: 1rem;
  }

  .month-badge {
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
  }

  .current-month-badge {
    font-size: 0.65rem;
    padding: 0.2rem 0.5rem;
  }

  .post-item {
    padding: 0.75rem;
    gap: 0.75rem;
  }

  .post-date {
    width: 45px;
    height: 45px;
  }

  .post-date .day {
    font-size: 1.1rem;
  }

  .post-title {
    font-size: 0.95rem;
  }

  .category-tag {
    font-size: 0.6rem;
    padding: 0.15rem 0.4rem;
    letter-spacing: 0.15px;
  }
}

/* Mobile - 480px */
@media (max-width: 480px) {
  .archives-header {
    padding: 0.75rem;
    margin-bottom: 1.5rem;
  }

  .search-input {
    font-size: 0.9rem;
  }

  .year-header {
    padding: 0.75rem;
  }

  .year-number {
    font-size: 1.5rem;
  }

  .year-badge {
    font-size: 0.7rem;
    padding: 0.25rem 0.6rem;
  }

  .current-badge {
    font-size: 0.65rem;
    padding: 0.2rem 0.5rem;
  }

  .month-header {
    padding: 0.6rem 0.75rem;
  }

  .month-title {
    gap: 0.5rem;
  }

  .month-name {
    font-size: 0.9rem;
  }

  .month-badge {
    font-size: 0.8rem;
    padding: 0.25rem 0.6rem;
  }

  .current-month-badge {
    font-size: 0.65rem;
    padding: 0.2rem 0.45rem;
  }

  .post-item {
    padding: 0.6rem;
    gap: 0.6rem;
  }

  .post-date {
    width: 40px;
    height: 40px;
  }

  .post-date .day {
    font-size: 1rem;
  }

  .post-title {
    font-size: 0.875rem;
    line-height: 1.3;
  }

  .category-tag {
    font-size: 0.65rem;
    padding: 0.15rem 0.4rem;
  }

  .post-arrow {
    font-size: 0.9rem;
  }

  .no-results {
    padding: 2rem 1rem;
  }

  .no-results i {
    font-size: 2rem !important;
  }

  .no-results p {
    font-size: 0.9rem;
  }
}

/* Extra Small Mobile - 375px */
@media (max-width: 375px) {
  .archives-header {
    padding: 0.5rem;
  }

  .search-input {
    font-size: 0.85rem;
  }

  .year-number {
    font-size: 1.3rem;
  }

  .year-badge {
    font-size: 0.65rem;
    padding: 0.2rem 0.5rem;
  }

  .month-name {
    font-size: 0.85rem;
  }


  .post-item {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    min-height: 48px; /* Minimum touch target size */
  }

  .post-date {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
  }

  .post-date .day {
    font-size: 1.1rem;
  }

  .post-content {
    flex: 1;
    min-width: 0;
  }
    width: 100%;
  }

  .post-title {
    font-size: 0.8rem;
  }

  .post-arrow {
    display: none;
  }
}

/* ===== ENHANCED MOBILE RESPONSIVENESS ===== */
@media (max-width: 768px) {
  /* Compact header for mobile */
  .archives-header {
    padding: 0.75rem;
    margin-bottom: 1rem;
  }

  /* Smaller search bar */

  .search-input {
    font-size: 0.85rem;
  }

  /* More compact year headers */
  .year-header {
    padding: 0.75rem 0.5rem;
    border-radius: 10px;
  }

  .year-title {
    gap: 0.5rem;
  }

  .year-title i {
    font-size: 1rem;
  }

  .year-number {
    font-size: 1.5rem;
  }

  .year-badge {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
  }

  .current-badge {
    font-size: 0.65rem;
    padding: 0.2rem 0.4rem;
  }

  /* Compact month headers */
  .month-header {
    padding: 0.6rem 0.5rem 0.6rem 0.2rem;
    margin-left: 0;
    border-radius: 8px;
  }

  .months-container {
    padding-left: 0.15rem;
    margin-left: 0;
  }

  .posts-list {
    margin-left: 0;
  }

  .month-title {
    gap: 0.4rem;
  }

  .month-title i {
    font-size: 0.85rem;
  }

  .month-name {
    font-size: 0.9rem;
  }

  .month-badge {
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
  }

  .current-month-badge {
    font-size: 0.65rem;
    padding: 0.15rem 0.4rem;
  }

  /* Compact post items with proper touch targets */
  .post-item {
    padding: 0.75rem 0.5rem;
    gap: 0.6rem;
    margin-left: 0;
    border-radius: 8px;
    min-height: 48px; /* Minimum touch target size */
  }

  .post-date {
    width: 44px;
    height: 44px;
    font-size: 0.7rem;
  }

  .post-date .day {
    font-size: 1rem;
  }

  .post-title {
    font-size: 0.85rem;
    line-height: 1.3;
  }

  .category-tag {
    font-size: 0.65rem;
    padding: 0.15rem 0.4rem;
  }

  /* No results message */
  .no-results {
    padding: 2rem 1rem;
  }

  .no-results i {
    font-size: 2rem !important;
  }

  .no-results p {
    font-size: 0.9rem;
  }
}

/* Extra small mobile devices */
@media (max-width: 480px) {
  .archives-header {
    padding: 0.5rem;
  }

  .year-number {
    font-size: 1.3rem;
  }

  .year-badge {
    font-size: 0.65rem;
  }

  .month-name {
    font-size: 0.85rem;
  }

  .post-item {
    margin-left: 0;
    padding: 0.65rem 0.4rem;
    min-height: 48px; /* Maintain touch target even on small screens */
  }

  .post-title {
    font-size: 0.8rem;
  }

  .post-date {
    width: 40px;
    height: 40px;
  }

  .post-date .day {
    font-size: 0.9rem;
  }
}