/* ============================================
   RESEARCH MAP SECTION
   네트워크 그래프 스타일 연구 맵 — Enhanced Edition
   ============================================ */

.research-map {
  background: var(--bg-secondary);
  overflow: hidden;
}

/* ── Map Container ── */
.rmap {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: var(--space-12) auto 0;
  aspect-ratio: 1 / 1;
}

/* ── SVG Connections ── */
.rmap__svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* Base line (background track) */
.rmap__svg .rmap__line-bg {
  stroke: var(--color-gray-200);
  stroke-width: 1.5;
  transition: stroke var(--transition-base), opacity var(--transition-base);
}

/* Animated flowing line (foreground) */
.rmap__svg .rmap__line {
  stroke: rgba(var(--color-primary-rgb), 0.35);
  stroke-width: 2;
  stroke-dasharray: 8 6;
  animation: rmap-flow 1.5s linear infinite;
  transition: stroke var(--transition-base), stroke-width var(--transition-base), opacity var(--transition-base);
}

@keyframes rmap-flow {
  to { stroke-dashoffset: -28; }
}

/* Highlighted state */
.rmap__svg .rmap__line--highlight {
  stroke: var(--color-primary);
  stroke-width: 3;
  filter: url(#glow);
}

.rmap__svg .rmap__line-bg.rmap__line--highlight {
  stroke: rgba(var(--color-primary-rgb), 0.25);
  stroke-width: 4;
  filter: none;
}

/* Dimmed state */
.rmap__svg .rmap__line--dim {
  opacity: 0.1;
}

.rmap__svg .rmap__line-bg.rmap__line--dim {
  opacity: 0.05;
}

/* Hidden state — inter-area lines hidden by default, revealed on hover/click */
.rmap__svg .rmap__line--hidden {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease, stroke var(--transition-base), stroke-width var(--transition-base);
}

.rmap__svg .rmap__line--hidden.rmap__line--highlight {
  opacity: 1;
  pointer-events: auto;
}

.rmap__svg .rmap__line-label--hidden {
  opacity: 0;
  transition: opacity 0.4s ease;
}

.rmap__svg .rmap__line-label--hidden.rmap__line-label--highlight {
  opacity: 1;
}

/* Inter-area connection lines */
.rmap__svg .rmap__line--inter {
  stroke: rgba(var(--color-accent-rgb), 0.3);
  stroke-dasharray: 5 4;
  animation: rmap-flow-inter 2s linear infinite;
}

.rmap__svg .rmap__line--inter.rmap__line--highlight {
  stroke: var(--color-accent);
  stroke-width: 3;
}

@keyframes rmap-flow-inter {
  to { stroke-dashoffset: -18; }
}

/* Connection hover area (invisible wider hit target) */
.rmap__svg .rmap__line-hover {
  stroke: transparent;
  stroke-width: 16;
  pointer-events: stroke;
  cursor: pointer;
}

/* Line labels */
.rmap__svg .rmap__line-label {
  font-family: var(--font-primary);
  font-size: 10px;
  fill: var(--text-muted);
  text-anchor: middle;
  pointer-events: none;
  transition: fill var(--transition-base), opacity var(--transition-base);
}

.rmap__svg .rmap__line-label--highlight {
  fill: var(--color-primary);
  font-weight: 600;
}

.rmap__svg .rmap__line-label--dim {
  opacity: 0.15;
}

/* ── Pulse animation on center node ── */
@keyframes rmap-pulse {
  0%   { box-shadow: var(--shadow-lg), 0 0 0 0 rgba(var(--color-primary-rgb), 0.25); }
  70%  { box-shadow: var(--shadow-lg), 0 0 0 18px rgba(var(--color-primary-rgb), 0); }
  100% { box-shadow: var(--shadow-lg), 0 0 0 0 rgba(var(--color-primary-rgb), 0); }
}

/* ── Node entrance animation ── */
@keyframes rmap-node-in {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.5);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

/* ── Nodes ── */
.rmap__node {
  position: absolute;
  z-index: 2;
  transform: translate(-50%, -50%);
  cursor: pointer;
  transition: transform var(--transition-base), opacity var(--transition-base);
  animation: rmap-node-in 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

/* Stagger entrance for each node */
.rmap__node:nth-child(1) { animation-delay: 0.1s; }
.rmap__node:nth-child(2) { animation-delay: 0.2s; }
.rmap__node:nth-child(3) { animation-delay: 0.3s; }
.rmap__node:nth-child(4) { animation-delay: 0.4s; }
.rmap__node:nth-child(5) { animation-delay: 0.5s; }
.rmap__node:nth-child(6) { animation-delay: 0.6s; }

.rmap__node--center {
  left: 50%;
  top: 50%;
  animation: rmap-node-in 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
  animation-delay: 0s;
}

.rmap__node:hover {
  transform: translate(-50%, -50%) scale(1.12);
  z-index: 5;
}

.rmap__node-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xl);
  background: var(--bg-primary);
  border: 2px solid var(--color-gray-200);
  box-shadow: var(--shadow-md);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
  padding: var(--space-4);
  width: 130px;
  height: 130px;
  text-align: center;
}

.rmap__node:hover .rmap__node-inner {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(var(--color-primary-rgb), 0.12);
}

.rmap__node--highlight .rmap__node-inner {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg), 0 0 24px rgba(var(--color-primary-rgb), 0.18), 0 0 0 4px rgba(var(--color-primary-rgb), 0.08);
}

.rmap__node--active .rmap__node-inner {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg), 0 0 24px rgba(var(--color-accent-rgb), 0.2), 0 0 0 4px rgba(var(--color-accent-rgb), 0.1);
}

.rmap__node--dim {
  opacity: 0.25;
}

.rmap__node-inner--center {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: var(--bg-hero);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg), 0 0 0 6px rgba(var(--color-primary-rgb), 0.12);
  animation: rmap-pulse 2.5s ease-in-out infinite;
}

.rmap__node-icon {
  width: 36px;
  height: 36px;
  margin-bottom: var(--space-2);
  object-fit: contain;
  transition: transform var(--transition-base);
}

.rmap__node:hover .rmap__node-icon {
  transform: scale(1.15);
}

.rmap__node-label {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  line-height: var(--line-height-tight);
}

.rmap__node-inner--center .rmap__node-label {
  color: var(--text-light);
  font-size: var(--text-sm);
}

.rmap__node-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  justify-content: center;
  margin-top: var(--space-1);
}

.rmap__node-tag {
  font-size: 9px;
  color: var(--text-muted);
  background: var(--color-gray-100);
  padding: 1px 5px;
  border-radius: var(--radius-full);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.rmap__node:hover .rmap__node-tag {
  background: rgba(var(--color-primary-rgb), 0.08);
  color: var(--color-primary);
}

/* ── Detail Panel ── */
.rmap__detail {
  position: relative;
  max-width: 700px;
  margin: var(--space-8) auto 0;
  padding: var(--space-8);
  background: var(--bg-primary);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  transform: translateY(12px);
  max-height: 0;
  overflow: hidden;
  transition: opacity 0.4s ease, transform 0.4s ease, max-height 0.4s ease, padding 0.4s ease, margin 0.4s ease;
  padding: 0 var(--space-8);
  margin-top: 0;
}

.rmap__detail--open {
  opacity: 1;
  transform: translateY(0);
  max-height: 800px;
  padding: var(--space-8);
  margin-top: var(--space-8);
}

.rmap__detail-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 32px;
  height: 32px;
  border: none;
  background: var(--color-gray-100);
  border-radius: 50%;
  font-size: 18px;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.rmap__detail-close:hover {
  background: var(--color-gray-200);
  color: var(--text-primary);
}

.rmap__detail-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.rmap__detail-icon {
  width: 96px;
  height: 96px;
  object-fit: contain;
  flex-shrink: 0;
}

.rmap__detail-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin: 0;
}

.rmap__detail-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin: 0 0 var(--space-4);
}

.rmap__detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.rmap__detail-tag {
  font-size: var(--text-xs);
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
}

.rmap__detail-connections {
  border-top: 1px solid var(--color-gray-200);
  padding-top: var(--space-4);
}

.rmap__detail-conn-title {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 var(--space-2);
}

.rmap__detail-conn-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.rmap__detail-conn-item {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  background: var(--color-gray-100);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.rmap__detail-conn-item::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

/* ── Connection Tooltip ── */
.rmap__tooltip {
  position: fixed;
  z-index: 100;
  background: var(--color-gray-800);
  color: var(--text-light);
  font-size: var(--text-xs);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  white-space: nowrap;
  box-shadow: var(--shadow-lg);
}

.rmap__tooltip--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Legend ── */
.rmap__legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-10);
  padding: var(--space-6);
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200);
}

.rmap__legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.rmap__legend-line {
  width: 24px;
  height: 2px;
  background: var(--color-gray-400);
  border-radius: 1px;
}

.rmap__legend-line--animated {
  background: repeating-linear-gradient(
    90deg,
    rgba(var(--color-primary-rgb), 0.5) 0px,
    rgba(var(--color-primary-rgb), 0.5) 8px,
    transparent 8px,
    transparent 14px
  );
  background-size: 28px 100%;
  animation: rmap-legend-flow 1.5s linear infinite;
}

@keyframes rmap-legend-flow {
  to { background-position: -28px 0; }
}

.rmap__legend-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  border: 2px solid var(--color-gray-300);
}

.rmap__legend-dot--center {
  border-radius: 50%;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.rmap__legend-hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-style: italic;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .rmap {
    max-width: 500px;
  }

  .rmap__node-inner {
    width: 90px;
    height: 90px;
    padding: var(--space-2);
  }

  .rmap__node-inner--center {
    width: 110px;
    height: 110px;
  }

  .rmap__node-icon {
    width: 24px;
    height: 24px;
    margin-bottom: var(--space-1);
  }

  .rmap__node-label {
    font-size: 10px;
  }

  .rmap__node-inner--center .rmap__node-label {
    font-size: var(--text-xs);
  }

  .rmap__node-tags {
    display: none;
  }

  .rmap__svg .rmap__line-label {
    font-size: 8px;
  }

  .rmap__legend {
    gap: var(--space-4);
    padding: var(--space-4);
  }

  .rmap__detail {
    padding: 0 var(--space-4);
  }

  .rmap__detail--open {
    padding: var(--space-6);
  }
}

@media (max-width: 480px) {
  .rmap {
    max-width: 340px;
  }

  .rmap__node-inner {
    width: 72px;
    height: 72px;
    padding: var(--space-1);
  }

  .rmap__node-inner--center {
    width: 88px;
    height: 88px;
  }

  .rmap__node-icon {
    width: 20px;
    height: 20px;
  }

  .rmap__node-label {
    font-size: 9px;
  }

  .rmap__svg .rmap__line-label {
    display: none;
  }

  .rmap__detail-header {
    flex-direction: column;
    text-align: center;
  }

  .rmap__detail-title {
    font-size: var(--text-lg);
  }
}