/* ==========================================================================
   TIMELINE ROADMAP SLIDER - CSS
   Rikkei Education & Gambaru Milestone Journey
   ========================================================================== */

:root {
  --tl-primary: #D71920;
  --tl-primary-dark: #B51218;
  --tl-primary-light: #FDEBEC;
  --tl-accent: #ED1C24;
  --tl-accent-purple: #A80F14;

  --tl-text-main: #1E293B;
  --tl-text-muted: #64748B;
  --tl-card-bg: #FFFFFF;

  --tl-card-border: rgba(215, 25, 32, 0.16);

  --tl-card-shadow:
    0 14px 34px -6px rgba(215, 25, 32, 0.12),
    0 4px 10px -2px rgba(0, 0, 0, 0.04);

  --tl-card-shadow-hover:
    0 20px 42px -6px rgba(215, 25, 32, 0.22),
    0 6px 14px -2px rgba(0, 0, 0, 0.06);

  --tl-bg-gradient:
    linear-gradient(
      180deg,
      #FFF5F5 0%,
      #FFFFFF 100%
    );

  --tl-radius-card: 18px;
  --tl-radius-pill: 50px;

  --tl-font-family:
    'Plus Jakarta Sans',
    'Inter',
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;

  --tl-transition:
    all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Base Wrapper */
.timeline-slider-section {
  /* width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 16px 16px 32px;
  box-sizing: border-box; */
  font-family: var(--tl-font-family);
  color: var(--tl-text-main);
  background: var(--tl-bg-gradient);
  border-radius: 28px;
  position: relative;
  overflow: hidden;
}

/* Subtle decorative glowing backdrops */
.timeline-slider-section::before,
.timeline-slider-section::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
  z-index: 0;
}

.timeline-slider-section::before {
  top: -60px;
  left: 10%;
  width: 320px;
  height: 320px;
  background: rgba(215, 25, 32, 0.12);
}

.timeline-slider-section::after {
  bottom: -60px;
  right: 10%;
  width: 380px;
  height: 380px;
  background: rgba(237, 28, 36, 0.08);
}

/* ==========================================================================
   TIMELINE VIEWPORT & TRACK
   ========================================================================== */

.timeline-viewport {
  position: relative;
  z-index: 2;
  width: 100%;
  overflow-x: hidden;
  overflow-y: visible;
  padding: 40px 0 20px;
  user-select: none;
  cursor: grab;
}

.timeline-viewport.is-dragging {
  cursor: grabbing;
}

/* Canvas / Track */
.timeline-track {
  position: relative;
  width: 1880px;
  height: 480px;
  margin: 0 auto;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: transform;
}

/* In "Overview" Mode */
.timeline-slider-section.mode-overview .timeline-viewport {
  overflow-x: auto;
  cursor: default;
  scrollbar-width: thin;
  scrollbar-color: rgba(26, 115, 232, 0.3) transparent;
}

.timeline-slider-section.mode-overview .timeline-viewport::-webkit-scrollbar {
  height: 6px;
}
.timeline-slider-section.mode-overview .timeline-viewport::-webkit-scrollbar-thumb {
  background: rgba(26, 115, 232, 0.3);
  border-radius: 6px;
}
.timeline-slider-section.mode-overview .timeline-track {
  transform: translateX(0) !important;
}

/* SVG Wavy Path */
.timeline-svg-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.timeline-wave-path {
  fill: none;
  /* stroke: url(#tlWaveGradientPhp); */
  stroke-width: 5.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 4px 12px rgba(26, 115, 232, 0.35));
}

/* Animated glow pulse along the path */
.timeline-glow-path {
  fill: none;
  stroke: #FF6B6B;
  stroke-width: 3;
  stroke-linecap: round;
  opacity: 0.6;
  stroke-dasharray: 20 180;
  animation: tlWaveFlow 6s linear infinite;
}

@keyframes tlWaveFlow {
  from {
    stroke-dashoffset: 2000;
  }
  to {
    stroke-dashoffset: 0;
  }
}

/* Arrowhead */
.timeline-arrowhead {
  /* fill: url(#tlWaveGradientPhp); */
  filter: drop-shadow(0 2px 6px rgba(26, 115, 232, 0.4));
}

/* Connector Dotted Lines */
.timeline-stem-line {
  stroke: rgba(26, 115, 232, 0.35);
  stroke-width: 2;
  stroke-dasharray: 4 4;
}

/* ==========================================================================
   MILESTONE ITEMS & NODES
   ========================================================================== */

.milestone-item {
  position: absolute;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
  width: 215px;
  text-align: center;
}

/* Node on the wave */
.milestone-node {
  position: absolute;
  left: 50%;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 4px solid var(--tl-primary);
  /* box-shadow: 0 0 0 4px rgba(26, 115, 232, 0.2), 0 4px 10px rgba(26, 115, 232, 0.4); */
  cursor: pointer;
  transition: var(--tl-transition);
  z-index: 3;
  transform: translate(-50%, -50%);
}

.milestone-node::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--tl-primary);
  transform: translate(-50%, -50%);
  transition: var(--tl-transition);
}

.milestone-item:hover .milestone-node,
.milestone-item.is-active .milestone-node {
  transform: translate(-50%, -50%) scale(1.3);
   border-color: #B51218;
  /* box-shadow:
    0 0 0 8px rgba(215, 25, 32, 0.20),
    0 0 20px rgba(215, 25, 32, 0.45); */
}

.milestone-item.is-active .milestone-node::before {
  content: "";
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  border: 2px solid var(--tl-primary);
  animation: tlRipple 2s cubic-bezier(0.24, 0, 0.38, 1) infinite;
}

@keyframes tlRipple {
  0% {
    transform: scale(0.6);
    opacity: 0.9;
  }
  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}

/* Milestone Cards: Luôn đồng nhất chiều cao và cố định 2 hàng chữ */
.milestone-card {
  background: var(--tl-card-bg);
  border: 1px solid var(--tl-card-border);
  border-radius: var(--tl-radius-card);
  padding: 12px 14px 14px;
  box-shadow: var(--tl-card-shadow);
  transition: var(--tl-transition);
  cursor: pointer;
  position: relative;
  width: 100%;
  min-height: 98px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  backdrop-filter: blur(8px);
}

/* Date Pill Badge */
.milestone-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 14px;
  background: var(--tl-primary-dark);
  color: #FFFFFF;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
  border-radius: var(--tl-radius-pill);
  margin-bottom: 8px;
  /* box-shadow: 0 2px 8px rgba(13, 87, 198, 0.35); */
  transition: var(--tl-transition);
}

/* Card Text: Cố định chuẩn 2 dòng */
.milestone-text {
  font-size: 13px;
  line-height: 1.4;
  color: #1E293B;
  font-weight: 500;
  margin: 0;
  text-align: center;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 36px;
}

.milestone-text strong {
  font-weight: 700;
  color: var(--tl-primary-dark);
}

/* Top positioning vs Bottom positioning */
.milestone-item.is-top {
  justify-content: flex-end;
}

.milestone-item.is-top .milestone-card {
  margin-bottom: 24px;
}

.milestone-item.is-bottom {
  justify-content: flex-start;
}

.milestone-item.is-bottom .milestone-card {
  margin-top: 24px;
}

/* Card Hover & Active States */
.milestone-item:hover .milestone-card {
  transform: translateY(-5px);
  border-color: rgba(26, 115, 232, 0.4);
  box-shadow: var(--tl-card-shadow-hover);
}

.milestone-item.is-active .milestone-card {
transform: translateY(-6px) scale(1.03);
  border-color: var(--tl-primary);
  box-shadow:
    0 20px 45px -8px rgba(215, 25, 32, 0.25),
    0 0 0 2px rgba(215, 25, 32, 0.16);
}

.milestone-item.is-active .milestone-pill {
  background: linear-gradient(
    135deg,
    #ED1C24,
    #B51218
  ); 
	box-shadow: 0 4px 12px rgba(26, 115, 232, 0.45);
}

/* Special Milestone 9: Gambaru Card */
.milestone-item.milestone--gambaru {
  width: 235px;
}

.milestone-item.milestone--gambaru .milestone-card {
 background:
    linear-gradient(
      180deg,
      #FFFFFF 0%,
      #FFF4F4 100%
    );

  border:
    1.5px solid rgba(215, 25, 32, 0.35);
  padding: 12px 14px 14px;
}

.milestone-item.milestone--gambaru .milestone-pill {
  background: #D71920;
}

.milestone-item.milestone--gambaru .milestone-text {
  font-size: 13.5px;
  font-weight: 700;
  color: #0F172A;
}

/* Special Milestone 10: Ending Target Card */
.milestone-item.milestone--target {
  width: 195px;
}

.milestone-item.milestone--target .milestone-pill {
  background:
    linear-gradient(
      135deg,
      #E53935,
      #A80F14
    );

  box-shadow:
    0 3px 10px rgba(215, 25, 32, 0.35);
}

.milestone-item.milestone--target .milestone-text strong {
  color: #D71920;
}

/* ==========================================================================
   PAGINATION / TIMELINE STEPPERS & ARROWS (Bottom Bar)
   ========================================================================== */

.timeline-bottom-nav {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
}

.timeline-nav-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  /* border: 1.5px solid rgba(26, 115, 232, 0.22); */
  background: #FFFFFF;
  color: var(--tl-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--tl-transition);
  box-shadow: 0 4px 12px rgba(26, 115, 232, 0.1);
  flex-shrink: 0;
}

.timeline-nav-arrow:hover {
  background: var(--tl-primary);
  color: #FFFFFF;
  border-color: var(--tl-primary);
  transform: scale(1.1);
  box-shadow: 0 6px 18px rgba(26, 115, 232, 0.3);
}

.timeline-nav-arrow:active {
  transform: scale(0.95);
}

.timeline-pagination {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 0;
  flex-wrap: wrap;
}

.timeline-dot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 12px;
  transition: var(--tl-transition);
}

.timeline-dot-circle {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #CBD5E1;
  transition: var(--tl-transition);
}

.timeline-dot-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--tl-text-muted);
  transition: var(--tl-transition);
}

.timeline-dot:hover .timeline-dot-circle {
  background: var(--tl-primary);
  transform: scale(1.2);
}

.timeline-dot.is-active {
  /* background: rgba(26, 115, 232, 0.08); */
}

.timeline-dot.is-active .timeline-dot-circle {
  background: var(--tl-primary);
  width: 24px;
  border-radius: 8px;
}

.timeline-dot.is-active .timeline-dot-label {
  color: var(--tl-primary);
  font-weight: 700;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 1024px) {
  .timeline-track {
    height: 460px;
  }
}

@media (max-width: 768px) {
  .timeline-slider-section {
    padding: 16px 12px 28px;
    border-radius: 20px;
  }

  .timeline-pagination {
    gap: 4px;
    margin-top: 20px;
  }

  .timeline-dot {
    padding: 4px 6px;
  }

  .timeline-dot-label {
    display: none; /* Ẩn chữ trên màn hình nhỏ, chỉ giữ lại chấm chỉ số */
  }

  .timeline-dot-circle {
    width: 8px;
    height: 8px;
  }
  
  .timeline-dot.is-active .timeline-dot-circle {
    width: 20px;
  }
}

#timelineRoadmap .timeline-nav-arrow {
  width: 40px;
  height: 40px;
  border-radius: 99% !important;
  /* border: 1.5px solid rgba(26, 115, 232, 0.22); */
  background: #FFFFFF;
  color: #D71920 !important;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  line-height: 1;
  box-sizing: border-box;
}

#timelineRoadmap .timeline-nav-arrow svg {
  width: 18px !important;
  height: 18px !important;
  display: block !important;
  flex-shrink: 0;
  overflow: visible;
  opacity: 1 !important;
  visibility: visible !important;
  stroke: currentColor !important;
  fill: none !important;
}

#timelineRoadmap .timeline-nav-arrow polyline {
  stroke: currentColor !important;
  stroke-width: 2.5 !important;
  fill: none !important;
}