/* ==========================================================================
   MIRACLE IT — CURRICULUM COMPONENT STYLESHEET (CLEAN BRIGHT THEME)
   Full Stack Web Development Course Landing Page — "What You'll Learn"
   Modular Component CSS: components/curriculum/curriculum.css
   Clean, Clear, Reduced Glow, Scannable Cards & Real Visual Pictures
   ========================================================================== */

/* --------------------------------------------------------------------------
   Section Container — Clean Technical Editorial Canvas
   -------------------------------------------------------------------------- */
.curriculum-section {
  padding: clamp(4.5rem, 7vw, 6.5rem) 0 clamp(3.5rem, 5vw, 5rem);
  background-color: #FAFAFD;
  background-image: 
    linear-gradient(to right, rgba(226, 232, 240, 0.65) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(226, 232, 240, 0.65) 1px, transparent 1px);
  background-size: 36px 36px;
  position: relative;
  overflow: visible;
  border-bottom: none;
  color: #0F172A;
}

.curriculum-container {
  position: relative;
  z-index: 2;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --------------------------------------------------------------------------
   Section Header (Clean & Scannable)
   -------------------------------------------------------------------------- */
.curriculum-section-head {
  text-align: center;
  max-width: 800px;
  margin: 0 auto clamp(2.8rem, 5vw, 4.2rem);
}

.curriculum-section-head .section-tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0.3rem 0.9rem;
  border-radius: 9999px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: #FFF7ED;
  color: #EA580C;
  border: 1px solid #FED7AA;
  box-shadow: 0 1px 2px rgba(234, 88, 12, 0.06);
  margin-bottom: 0.75rem;
}

.curriculum-section-head .pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #FF7A00;
}

.curriculum-main-title {
  font-family: var(--font-heading, 'Sora', sans-serif);
  font-size: clamp(2rem, 3.8vw, 2.85rem);
  font-weight: 800;
  color: #0F172A !important;
  line-height: 1.18;
  margin: 0.6rem 0 0.85rem;
  letter-spacing: -0.025em;
}

.curriculum-main-subtitle {
  font-size: clamp(0.95rem, 1.2vw, 1.05rem);
  color: #475569 !important;
  line-height: 1.6;
  margin: 0 auto 1.25rem;
}

.curriculum-interaction-hint {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  color: #0284C7;
  font-size: 0.8rem;
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.hint-mouse-icon {
  width: 13px;
  height: 20px;
  border: 1.8px solid #0284C7;
  border-radius: 10px;
  display: inline-block;
  position: relative;
  flex-shrink: 0;
}

.hint-mouse-wheel {
  width: 2px;
  height: 4px;
  background: #0284C7;
  border-radius: 2px;
  position: absolute;
  top: 3px;
  left: 50%;
  transform: translateX(-50%);
  animation: mouseScrollWheel 1.6s infinite ease-in-out;
}

@keyframes mouseScrollWheel {
  0% { top: 3px; opacity: 1; }
  60% { top: 10px; opacity: 0.2; }
  100% { top: 3px; opacity: 0; }
}

/* --------------------------------------------------------------------------
   Vertical Progression Timeline & Spine (Crisp, Perfectly Aligned)
   -------------------------------------------------------------------------- */
.curriculum-timeline {
  position: relative;
  margin: 0 auto;
  padding: 0.5rem 0 2.5rem;
  display: flex;
  flex-direction: column;
}

/* Central Line Spine (Centered Vertical Timeline) */
.timeline-spine {
  position: absolute;
  top: 1.5rem;
  bottom: 5rem;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  z-index: 10;
  pointer-events: none;
}

/* Inactive Dashed Guide Track (matches reference screenshot) */
.timeline-track-inactive {
  position: absolute;
  inset: 0;
  width: 2px;
  background-image: linear-gradient(to bottom, #EA580C 35%, transparent 35%);
  background-size: 2px 14px;
  background-repeat: repeat-y;
  opacity: 0.35;
}

/* Scroll-Driven Active Progress Line */
.timeline-track-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 0%;
  background: #FF4D00;
  box-shadow: 0 0 8px rgba(255, 77, 0, 0.5);
  will-change: height;
  z-index: 12;
}

/* Active Concentric Ring Beacon (matches reference screenshot) */
.timeline-head-beacon {
  position: absolute;
  bottom: -11px;
  left: 50%;
  margin-left: -11px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 4px solid #FF4D00;
  box-shadow: 0 0 0 8px rgba(255, 77, 0, 0.16), 0 2px 10px rgba(255, 77, 0, 0.3);
  z-index: 20;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: beaconPulse 2s infinite ease-in-out;
}

.timeline-head-beacon::after {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #FF4D00;
}

@keyframes beaconPulse {
  0%, 100% {
    box-shadow: 0 0 0 6px rgba(255, 77, 0, 0.16), 0 2px 10px rgba(255, 77, 0, 0.3);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(255, 77, 0, 0.22), 0 2px 14px rgba(255, 77, 0, 0.45);
  }
}

/* Central Node Checkpoint Marker on the Line */
.timeline-node-wrapper {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 15;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-node-checkpoint {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 3px solid #CBD5E1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.08);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  padding: 0;
}

.checkpoint-core {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #94A3B8;
  transition: all 0.3s ease;
}

.checkpoint-halo {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  background: rgba(255, 77, 0, 0.14);
  opacity: 0;
  transform: scale(0.6);
  transition: all 0.3s ease;
  pointer-events: none;
}

.timeline-node-checkpoint:hover,
.timeline-node-checkpoint.is-active,
.timeline-stage-zone.is-active .timeline-node-checkpoint {
  border-color: #FF4D00;
  box-shadow: 0 0 0 5px rgba(255, 77, 0, 0.15), 0 2px 8px rgba(255, 77, 0, 0.25);
  transform: scale(1.15);
}

.timeline-node-checkpoint.is-active .checkpoint-core,
.timeline-stage-zone.is-active .timeline-node-checkpoint .checkpoint-core {
  background: #FF4D00;
  transform: scale(1.1);
}

.timeline-node-checkpoint.is-active .checkpoint-halo,
.timeline-stage-zone.is-active .timeline-node-checkpoint .checkpoint-halo {
  opacity: 1;
  transform: scale(1);
}

.timeline-node-checkpoint.is-completed {
  border-color: #EA580C;
  background: #FF4D00;
}

.timeline-node-checkpoint.is-completed .checkpoint-core {
  background: #FFFFFF;
}

/* Stage Zone & Alternating Grid Rows */
.timeline-stage-zone {
  position: relative;
  margin-bottom: clamp(3.5rem, 6vw, 5.5rem);
}

.stage-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(4.5rem, 7.5vw, 6.5rem);
  align-items: center;
}

.stage-col {
  min-width: 0;
  width: 100%;
}

/* --------------------------------------------------------------------------
   Stage Text Cards (Clean Typography & Scannable Editorial Content)
   -------------------------------------------------------------------------- */
.stage-text-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 20px;
  padding: clamp(1.6rem, 2.8vw, 2.25rem);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
  position: relative;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
  overflow: hidden;
}

.stage-text-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #FF4D00, #FF7A00 45%, transparent 85%);
  opacity: 0.9;
}

.timeline-stage-zone.is-active .stage-text-card {
  border-color: #CBD5E1;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.stage-big-number {
  font-family: var(--font-heading, 'Sora', sans-serif);
  font-size: clamp(3.2rem, 5.5vw, 4.6rem);
  font-weight: 900;
  color: #FF4D00;
  line-height: 1;
  margin-bottom: 0.55rem;
  letter-spacing: -0.04em;
  display: block;
}

.panel-stage-title {
  font-family: var(--font-heading, 'Sora', sans-serif);
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  font-weight: 800;
  color: #0F172A;
  line-height: 1.25;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.panel-milestone-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #EA580C;
  margin-bottom: 0.95rem;
}

.panel-stage-description {
  font-size: 0.92rem;
  line-height: 1.6;
  color: #475569;
  margin-bottom: 1.15rem;
}

/* Scannable Skills List */
.stage-skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.15rem;
}

.skill-chip {
  font-size: 0.76rem;
  font-weight: 600;
  color: #334155;
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  line-height: 1.3;
}

/* Core Tech Logos Strip */
.panel-tech-strip {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding-top: 0.75rem;
  border-top: 1px solid #F1F5F9;
}

.tech-strip-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: #64748B;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tech-badges-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tech-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  padding: 0.22rem 0.55rem;
  border-radius: 6px;
  font-size: 0.74rem;
  font-weight: 600;
  color: #334155;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
}

.tech-badge img {
  width: 16px;
  height: 16px;
  object-fit: contain;
}

/* --------------------------------------------------------------------------
   Stage Picture Cards (Real Visual Deliverables)
   -------------------------------------------------------------------------- */
.stage-picture-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.stage-picture-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #FF4D00, #FF7A00 45%, transparent 85%);
  opacity: 0.9;
  z-index: 5;
}

.stage-picture-card:hover {
  transform: translateY(-3px);
  border-color: #CBD5E1;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.card-chrome-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.9rem;
  background: #F8FAFC;
  border-bottom: 1px solid #E2E8F0;
  gap: 0.6rem;
}

.window-controls {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
}

.ctrl-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.dot-close { background: #EF4444; }
.dot-min   { background: #F59E0B; }
.dot-max   { background: #10B981; }

.card-chrome-title {
  flex: 1;
  min-width: 0;
  font-size: 0.72rem;
  font-weight: 600;
  color: #475569;
  font-family: var(--font-mono, monospace);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-status-pill {
  font-size: 0.66rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}

.card-status-pill.green,
.card-status-pill.cyan,
.card-status-pill.blue   { background: #EFF6FF; color: #2563EB; border: 1px solid #BFDBFE; }
.card-status-pill.purple,
.card-status-pill.orange { background: #FFF7ED; color: #FF7A00; border: 1px solid #FED7AA; }

.card-media-wrap {
  width: 100%;
  aspect-ratio: 16 / 9.5;
  overflow: hidden;
  background: #F1F5F9;
}

.stage-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.stage-picture-card:hover .stage-img {
  transform: scale(1.02);
}

/* End of Journey Marker (Centered End Node) */
.timeline-end-node-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 3.5rem auto 0;
  gap: 0.65rem;
  position: relative;
  z-index: 15;
  text-align: center;
}

.timeline-end-node {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 2px solid #FF7A00;
  color: #FF7A00;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(255, 122, 0, 0.2), 0 0 0 4px rgba(255, 122, 0, 0.08);
  transition: all 0.25s ease;
}

.timeline-end-node svg {
  stroke: #FF7A00;
}

.timeline-end-node:hover {
  transform: scale(1.08);
  background: #FFF7ED;
}

.end-node-label {
  font-family: var(--font-heading, 'Sora', sans-serif);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #64748B;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   Bottom Milestone Card (Clean Light Aesthetic)
   -------------------------------------------------------------------------- */
.curriculum-bottom-milestone-card {
  margin-top: 3rem;
  background: #FFFFFF;
  border: 1px solid #FED7AA;
  border-radius: 18px;
  padding: clamp(1.8rem, 3.5vw, 2.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  box-shadow: 0 4px 20px rgba(255, 122, 0, 0.06);
  position: relative;
  overflow: hidden;
}

.curriculum-bottom-milestone-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2.5px;
  background: #FF7A00;
}

.milestone-content {
  max-width: 620px;
}

.milestone-kicker {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #EA580C;
  margin-bottom: 0.45rem;
}

.milestone-title {
  font-family: var(--font-heading, 'Sora', sans-serif);
  font-size: clamp(1.3rem, 2vw, 1.65rem);
  font-weight: 800;
  color: #0F172A;
  margin: 0 0 0.55rem;
}

.milestone-desc {
  font-size: 0.9rem;
  line-height: 1.55;
  color: #475569;
  margin: 0;
}

.milestone-actions {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  flex-shrink: 0;
}

.milestone-actions .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.75rem 1.4rem;
  font-size: 0.88rem;
  font-weight: 700;
  border-radius: 10px;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.25s ease;
}

.milestone-actions .btn-primary {
  background: #FF7A00;
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(255, 122, 0, 0.25);
}

.milestone-actions .btn-primary:hover {
  background: #E05D00;
}

.milestone-actions .btn-outline {
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  color: #0F172A;
}

.milestone-actions .btn-outline:hover {
  border-color: #FF7A00;
  color: #FF7A00;
}

/* ==========================================================================
   ARCHITECTURAL HORIZON TRANSITION SEAM (BRIGHT -> DARK)
   ========================================================================== */
.seam-horizon-divider.seam-bright-to-dark {
  display: block;
  width: 100%;
  line-height: 0;
  position: relative;
  z-index: 10;
  pointer-events: none;
  background-color: #F8FAFC;
  margin-bottom: -1px;
}

.seam-horizon-divider .seam-horizon-svg {
  display: block;
  width: 100%;
  height: clamp(50px, 5.5vw, 85px);
  vertical-align: bottom;
}

.seam-conduit-hub {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 15;
  pointer-events: auto;
}

.conduit-spine-stem {
  width: 2px;
  height: 16px;
  background: #FF7A00;
  margin-bottom: 5px;
}

.conduit-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.4rem 1.05rem;
  border-radius: 9999px;
  background: rgba(15, 23, 42, 0.94);
  border: 1px solid rgba(255, 122, 0, 0.4);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #F8FAFC;
  font-size: 0.76rem;
  font-weight: 700;
  white-space: nowrap;
}

.conduit-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #FF7A00;
}

.conduit-dot.pulse {
  animation: conduitPulse 1.8s infinite;
}

@keyframes conduitPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.8; }
}

.conduit-tag {
  color: #FFA843;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.68rem;
}

.conduit-sep {
  color: #64748B;
  opacity: 0.6;
}

.conduit-title {
  color: #E2E8F0;
}

.conduit-chevron {
  color: #FF7A00;
}

/* Responsive adjustments */
@media (max-width: 991px) {
  .stage-row {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    padding-left: 56px;
  }
  .stage-row-even .stage-text-col {
    order: 1;
  }
  .stage-row-even .stage-visual-col {
    order: 2;
  }
  .curriculum-timeline {
    padding-left: 0;
  }
  .timeline-spine {
    left: 24px;
    transform: translateX(-50%);
  }
  .timeline-node-wrapper {
    left: 24px;
    top: 2rem;
    transform: translate(-50%, 0);
  }
  .timeline-node-checkpoint {
    width: 18px;
    height: 18px;
  }
  .timeline-end-node-wrapper {
    align-items: flex-start;
    padding-left: 3px;
    margin-top: 2rem;
  }
  .curriculum-bottom-milestone-card {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem;
  }
  .milestone-actions {
    width: 100%;
  }
  .milestone-actions .btn {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .curriculum-section {
    padding: clamp(3rem, 6vw, 4.5rem) 0 clamp(4rem, 8vw, 6rem);
  }
  .stage-row {
    padding-left: 48px;
    gap: 1.25rem;
  }
  .timeline-spine {
    left: 20px;
    transform: translateX(-50%);
  }
  .timeline-node-wrapper {
    left: 20px;
    top: 1.8rem;
    transform: translate(-50%, 0);
  }
  .stage-text-card {
    padding: 1.35rem 1.15rem;
    border-radius: 16px;
  }
  .stage-big-number {
    font-size: 2.75rem;
  }
  .panel-stage-title {
    font-size: 1.22rem;
  }
  .panel-stage-description {
    font-size: 0.85rem;
    line-height: 1.55;
    margin-bottom: 0.85rem;
  }
  .stage-skills-list {
    gap: 0.35rem;
    margin-bottom: 0.85rem;
  }
  .skill-chip {
    font-size: 0.72rem;
    padding: 0.26rem 0.55rem;
  }
  .tech-strip-label {
    font-size: 0.65rem;
  }
  .tech-badge {
    padding: 0.2rem 0.45rem;
    font-size: 0.7rem;
  }
  .stage-picture-card {
    border-radius: 16px;
  }
  .card-chrome-header {
    padding: 0.45rem 0.75rem;
  }
  .card-chrome-title {
    font-size: 0.68rem;
  }
  .card-status-pill {
    font-size: 0.62rem;
    padding: 0.12rem 0.45rem;
  }
  .conduit-chip {
    padding: 0.35rem 0.8rem;
    font-size: 0.7rem;
  }
  .conduit-title {
    display: none;
  }
  .conduit-sep {
    display: none;
  }
}