/* ========================================
   INTERACTIVE TIMELINE WIDGET - COMPLETE CSS
   ======================================== */

.interactive-timeline {
  display: flex;
  gap: 30px;
  align-items: stretch;
  font-family: Arial, sans-serif;
  position: relative;
  width: 100%;
}

/* Layout Directions */
.interactive-timeline.layout-left {
  flex-direction: row;
}

.interactive-timeline.layout-right {
  flex-direction: row-reverse;
}

/* Container Ratio Presets for ROW layout */
.interactive-timeline.container-ratio-5050 .timeline-media {
  flex: 0 0 50% !important;
  max-width: 50% !important;
  width: 50% !important;
}

.interactive-timeline.container-ratio-5050 .timeline-content {
  flex: 0 0 50% !important;
  max-width: 50% !important;
  width: 50% !important;
}

.interactive-timeline.container-ratio-4060 .timeline-media {
  flex: 0 0 40% !important;
  max-width: 40% !important;
  width: 40% !important;
}

.interactive-timeline.container-ratio-4060 .timeline-content {
  flex: 0 0 60% !important;
  max-width: 60% !important;
  width: 60% !important;
}

.interactive-timeline.container-ratio-6040 .timeline-media {
  flex: 0 0 60% !important;
  max-width: 60% !important;
  width: 60% !important;
}

.interactive-timeline.container-ratio-6040 .timeline-content {
  flex: 0 0 40% !important;
  max-width: 40% !important;
  width: 40% !important;
}

/* ==== MEDIA AREA ==== */
.timeline-media {
  flex: 0 0 50%;
  max-width: 50%;
  width: 50%;
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: transparent;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* For column layout (stacked) */
.interactive-timeline[style*="flex-direction: column"] .timeline-media,
.interactive-timeline[style*="flex-direction: column"] .timeline-content {
  flex: 0 0 auto !important;
  max-width: 100% !important;
  width: 100% !important;
}

/* ภาพทุกตัวซ้อนทับกัน */
.timeline-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  z-index: 1;
  pointer-events: none;
  will-change: opacity, transform;
  transition: opacity 0.35s ease, visibility 0s linear 0.35s;
}

.timeline-image.active {
  opacity: 1 !important;
  visibility: visible !important;
  z-index: 2;
  pointer-events: auto;
  transition: opacity 0.35s ease, visibility 0s linear 0s;
}

.timeline-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  max-width: 100%;
  max-height: 100%;
}

/* ==== CONTENT AREA ==== */
.timeline-content {
  flex: 0 0 50%;
  max-width: 50%;
  width: 50%;
  background: transparent;
  display: flex;
  flex-direction: column;
}

.timeline-content ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

/* ==== TIMELINE STEPS ==== */
.timeline-step {
  padding: 15px 20px;
  cursor: pointer;
  transition: background-color 0.25s ease, border-color 0.25s ease, transform 0.2s ease;
  border-radius: 6px;
  margin-bottom: 10px;
  outline: none;
  position: relative;
  background-color: transparent;
  border: 1px solid transparent;
}

.timeline-step:last-child {
  margin-bottom: 0;
}

.timeline-step:hover {
  background-color: #e6f0ff;
  transform: translateX(4px);
}

.timeline-step.active {
  background-color: #e6f0ff;
  border-color: #003a8c;
}

.timeline-step:focus-visible {
  outline: 2px solid #003a8c;
  outline-offset: 2px;
}

/* Title Wrapper */
.timeline-step-title-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 5px;
}

/* Title */
.timeline-step h4 {
  margin: 0;
  color: #003a8c;
  font-weight: 600;
  font-size: 16px;
  line-height: 1.4;
}

/* Description */
.timeline-step p {
  margin: 0;
  color: #555;
  font-size: 14px;
  line-height: 1.6;
}

/* ==== ICON STYLING ==== */
.timeline-step-icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
  display: inline-block;
  flex-shrink: 0;
  /* ลบ filter ออก ให้แสดงรูปตามต้นฉบับ */
}

/* Active step icon */
.timeline-step.active .timeline-step-icon {
  /* สามารถเพิ่ม effect เมื่อ active ได้ เช่น scale */
  transform: scale(1.1);
  transition: transform 0.2s ease;
}

/* ==== RESPONSIVE DESIGN ==== */
@media (max-width: 1024px) {
  .interactive-timeline {
    gap: 20px;
  }
  
  /* Keep ratio on tablet for row layout */
  .interactive-timeline.container-ratio-5050 .timeline-media,
  .interactive-timeline.container-ratio-5050 .timeline-content {
    flex: 0 0 50% !important;
    max-width: 50% !important;
    width: 50% !important;
  }
  
  .interactive-timeline.container-ratio-4060 .timeline-media {
    flex: 0 0 40% !important;
    max-width: 40% !important;
    width: 40% !important;
  }
  
  .interactive-timeline.container-ratio-4060 .timeline-content {
    flex: 0 0 60% !important;
    max-width: 60% !important;
    width: 60% !important;
  }
  
  .interactive-timeline.container-ratio-6040 .timeline-media {
    flex: 0 0 60% !important;
    max-width: 60% !important;
    width: 60% !important;
  }
  
  .interactive-timeline.container-ratio-6040 .timeline-content {
    flex: 0 0 40% !important;
    max-width: 40% !important;
    width: 40% !important;
  }
}

@media (max-width: 768px) {
  /* Auto stack on mobile unless specified otherwise */
  .interactive-timeline:not([style*="flex-direction"]),
  .interactive-timeline.layout-left,
  .interactive-timeline.layout-right {
    flex-direction: column !important;
    gap: 20px;
  }
  
  /* Full width on mobile for all containers */
  .interactive-timeline .timeline-media,
  .interactive-timeline .timeline-content,
  .interactive-timeline.container-ratio-4060 .timeline-media,
  .interactive-timeline.container-ratio-4060 .timeline-content,
  .interactive-timeline.container-ratio-5050 .timeline-media,
  .interactive-timeline.container-ratio-5050 .timeline-content,
  .interactive-timeline.container-ratio-6040 .timeline-media,
  .interactive-timeline.container-ratio-6040 .timeline-content {
    flex: 0 0 100% !important;
    max-width: 100% !important;
    width: 100% !important;
  }
  
  .timeline-media {
    aspect-ratio: 16 / 9;
  }
  
  .timeline-step {
    padding: 12px 16px;
  }
  
  .timeline-step:hover {
    transform: translateX(0);
  }
}

@media (max-width: 480px) {
  .timeline-media {
    aspect-ratio: 4 / 3;
  }
  
  .timeline-step h4 {
    font-size: 14px;
  }
  
  .timeline-step p {
    font-size: 13px;
  }
  
  .timeline-step-icon {
    width: 20px;
    height: 20px;
  }
}

/* ==== ANIMATION UTILITIES ==== */
.interactive-timeline[data-animation="fade"] .timeline-image {
  transition: opacity 0.35s ease;
}

.interactive-timeline[data-animation="slide"] .timeline-image {
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.interactive-timeline[data-animation="none"] .timeline-image {
  transition: none;
}

/* ==== ACCESSIBILITY ==== */
.timeline-step[role="tab"] {
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
}

.timeline-step[role="tab"]:focus {
  position: relative;
  z-index: 1;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .timeline-image,
  .timeline-step {
    transition: none !important;
    animation: none !important;
  }
}

/* ==== LOADING STATE ==== */
.timeline-image img {
  background: transparent;
}

.timeline-image img[src=""] {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* ==== PRINT STYLES ==== */
@media print {
  .interactive-timeline {
    display: block;
  }
  
  .timeline-media,
  .timeline-content {
    width: 100%;
    flex: none;
  }
  
  .timeline-image {
    position: static;
    opacity: 1 !important;
    visibility: visible !important;
    page-break-inside: avoid;
  }
  
  .timeline-step {
    page-break-inside: avoid;
    background: transparent !important;
  }
}

/* ==== DARK MODE SUPPORT ==== */
@media (prefers-color-scheme: dark) {
  .timeline-media {
    background: transparent;
  }
  
  .timeline-step:hover,
  .timeline-step.active {
    background-color: rgba(0, 58, 140, 0.2);
  }
  
  .timeline-step h4 {
    color: #6ba3ff;
  }
  
  .timeline-step p {
    color: #ccc;
  }
}

/* ==== RTL SUPPORT ==== */
[dir="rtl"] .interactive-timeline.layout-left {
  flex-direction: row-reverse;
}

[dir="rtl"] .interactive-timeline.layout-right {
  flex-direction: row;
}

[dir="rtl"] .timeline-step:hover {
  transform: translateX(-4px);
}

[dir="rtl"] .timeline-step-title-wrapper {
  flex-direction: row-reverse;
}