/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  background: #121212;
  color: #e0e0e0;
  min-height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* === Loading Screen === */
.loading-screen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #121212;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.loading-logo {
  margin-bottom: 20px;
}
.loading-logo-svg {
  width: 72px;
  height: 72px;
  color: #FFC629;
  animation: loadPulse 1.6s ease-in-out infinite;
}
@keyframes loadPulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.1); opacity: 0.9; }
}
.loading-text {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.4rem;
  font-weight: 600;
  color: #e0e0e0;
  margin-bottom: 6px;
}
.loading-subtext {
  font-size: 0.82rem;
  color: #5a6478;
}

/* === Particle Canvas === */
#particleCanvas {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1.5s ease;
}
#particleCanvas.visible {
  opacity: 0.6;
}

/* === Header === */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(18,18,18,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,198,41,0.08);
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
}
.header-inner {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 20px;
}
.logo-lockup {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  color: #FFC629;
}
.logo-text {
  font-family: 'Montserrat', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: #e0e0e0;
  display: block;
  line-height: 1.1;
  letter-spacing: -0.01em;
  padding-bottom: 2px;
  border-bottom: 2px solid rgba(255,198,41,0.5);
}
.logo-sub {
  font-size: 0.68rem;
  color: #B0B3B2;
  display: block;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 2px;
}
.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  justify-content: flex-end;
}

/* === View Toggle === */
.view-toggle {
  display: flex;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 2px;
  gap: 2px;
}
.view-toggle-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  background: transparent;
  border: none;
  border-radius: 6px;
  padding: 5px 12px;
  font-size: 0.75rem;
  font-family: inherit;
  font-weight: 500;
  color: #5a6478;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.view-toggle-btn svg {
  width: 14px;
  height: 14px;
}
.view-toggle-btn:hover {
  color: #8892a4;
}
.view-toggle-btn.active {
  background: rgba(255,198,41,0.12);
  color: #FFC629;
}

/* === About Button === */
.about-btn {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 6px;
  cursor: pointer;
  color: #5a6478;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
}
.about-btn:hover {
  border-color: rgba(255,255,255,0.15);
  color: #e0e0e0;
  background: rgba(255,255,255,0.06);
}
.about-btn svg {
  width: 18px;
  height: 18px;
}

/* === Search === */
.search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.search-icon {
  position: absolute;
  left: 10px;
  width: 16px; height: 16px;
  color: #5a6478;
  pointer-events: none;
}
#searchInput {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 7px 12px 7px 34px;
  color: #e0e0e0;
  font-size: 0.85rem;
  font-family: inherit;
  width: 240px;
  transition: border-color 0.2s, background 0.2s, width 0.3s;
  outline: none;
}
#searchInput:focus {
  border-color: rgba(255,198,41,0.5);
  background: rgba(255,198,41,0.06);
  width: 300px;
}
#searchInput::placeholder { color: #5a6478; }

/* === Semester Select === */
.semester-select {
  appearance: none;
  -webkit-appearance: none;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 7px 32px 7px 12px;
  color: #e0e0e0;
  font-size: 0.82rem;
  font-family: inherit;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235a6478' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}
.semester-select:focus {
  border-color: rgba(255,198,41,0.5);
  background-color: rgba(255,198,41,0.06);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235a6478' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}
.semester-select option {
  background: #1c1c1c;
  color: #e0e0e0;
}

/* === Canvas === */
.canvas-area {
  position: fixed;
  top: 64px; left: 0; right: 0; bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}
.canvas-area.hidden { display: none; }

#graph {
  width: 100%;
  height: 100%;
  cursor: grab;
}
#graph:active { cursor: grabbing; }

.graph-hint {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  color: #5a6478;
  display: flex;
  align-items: center;
  gap: 6px;
  pointer-events: none;
  white-space: nowrap;
  z-index: 10;
  opacity: 1;
  transition: opacity 0.5s;
}
.graph-hint.hidden { opacity: 0; }
.graph-hint svg { width: 14px; height: 14px; }

.stat-bar {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(60px);
  background: rgba(28,28,28,0.85);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  padding: 6px 18px;
  font-size: 0.75rem;
  color: #8892a4;
  pointer-events: none;
  z-index: 10;
  white-space: nowrap;
  opacity: 0;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.6s ease;
}
.stat-bar.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* === D3 Graph Nodes === */
.domain-node circle.outer {
  transition: r 0.3s;
}
.domain-node text {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 600;
  fill: #e0e0e0;
  pointer-events: none;
  text-shadow: 0 1px 4px rgba(0,0,0,0.8);
}
.domain-node .count-badge {
  font-family: 'Montserrat', sans-serif;
  font-size: 9px;
  font-weight: 400;
  fill: rgba(255,255,255,0.5);
  letter-spacing: 0.03em;
}
.domain-node:hover { cursor: pointer; }

.project-node circle {
  transition: r 0.2s, opacity 0.2s;
}
.project-node:hover { cursor: pointer; }

.link-line {
  stroke: rgba(255,255,255,0.04);
  stroke-width: 1;
  fill: none;
}

/* === Side Panel === */
.side-panel {
  position: fixed;
  top: 64px; right: 0;
  width: 400px;
  height: calc(100vh - 64px);
  background: rgba(28,28,28,0.97);
  border-left: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 200;
}
.side-panel.open { transform: translateX(0); }

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  flex-shrink: 0;
}
.panel-domain-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Montserrat', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: #e0e0e0;
}
.panel-domain-badge::before {
  content: '';
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--domain-color, #FFC629);
  flex-shrink: 0;
}
.close-btn {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 6px;
  cursor: pointer;
  color: #5a6478;
  display: flex;
  align-items: center;
  transition: all 0.15s;
}
.close-btn:hover { border-color: rgba(255,255,255,0.15); color: #e0e0e0; }
.close-btn svg { width: 16px; height: 16px; }

.panel-meta {
  padding: 12px 20px;
  font-size: 0.8rem;
  color: #5a6478;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  flex-shrink: 0;
}

/* === Sort Bar === */
.panel-sort-bar {
  display: flex;
  gap: 4px;
  padding: 10px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  flex-shrink: 0;
}
.sort-btn {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 6px;
  padding: 4px 12px;
  font-size: 0.72rem;
  font-family: inherit;
  font-weight: 500;
  color: #5a6478;
  cursor: pointer;
  transition: all 0.18s;
  letter-spacing: 0.02em;
}
.sort-btn:hover {
  border-color: rgba(255,255,255,0.15);
  color: #8892a4;
}
.sort-btn.active {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.12);
  color: #e0e0e0;
}

/* === Project List === */
.project-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px 12px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.08) transparent;
}
.project-list::-webkit-scrollbar { width: 4px; }
.project-list::-webkit-scrollbar-track { background: transparent; }
.project-list::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 2px; }

.project-card {
  background: rgba(255,255,255,0.025);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 8px;
  padding: 14px 14px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.18s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.project-card:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.12);
  transform: translateY(-1px);
}
.project-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}
.project-card-id {
  font-size: 0.68rem;
  color: #5a6478;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.project-card-award {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.62rem;
  font-weight: 600;
  color: #FFC629;
  background: rgba(255,198,41,0.1);
  border: 1px solid rgba(255,198,41,0.2);
  border-radius: 4px;
  padding: 1px 6px;
  white-space: nowrap;
}
.project-card-title {
  font-size: 0.85rem;
  font-weight: 500;
  color: #e0e0e0;
  line-height: 1.35;
  margin-bottom: 6px;
}
.project-card-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}
.project-card-type {
  display: inline-flex;
  align-items: center;
  background: rgba(255,255,255,0.04);
  border-radius: 4px;
  padding: 2px 7px;
  font-size: 0.68rem;
  color: #8892a4;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.project-card-sem {
  display: inline-flex;
  align-items: center;
  font-size: 0.68rem;
  color: #5a6478;
}
.project-card-abstract {
  font-size: 0.78rem;
  color: #8892a4;
  margin-top: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* === Modal === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.modal {
  background: #1c1c1c;
  border: 1px solid rgba(255,198,41,0.08);
  border-radius: 16px;
  max-width: 600px;
  width: calc(100vw - 40px);
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  padding: 32px;
  position: relative;
  transform: translateY(16px) scale(0.98);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.08) transparent;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}
.modal-overlay.open .modal { transform: translateY(0) scale(1); }
.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 7px;
  cursor: pointer;
  color: #5a6478;
  display: flex;
  align-items: center;
  transition: all 0.15s;
  z-index: 2;
}
.modal-close:hover { color: #e0e0e0; background: rgba(255,255,255,0.08); }
.modal-close svg { width: 16px; height: 16px; }

.modal-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.modal-category-badge {
  display: inline-flex;
  align-items: center;
  background: rgba(255,198,41,0.08);
  border: 1px solid rgba(255,198,41,0.15);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 0.68rem;
  color: #FFC629;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.modal-winner-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(255,198,41,0.1);
  border: 1px solid rgba(255,198,41,0.2);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 0.68rem;
  color: #FFC629;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.modal-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.25;
  color: #e0e0e0;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
  padding-right: 40px;
}
.modal-authors {
  font-size: 0.82rem;
  color: #8892a4;
  margin-bottom: 6px;
  line-height: 1.5;
}
.modal-supervisor {
  font-size: 0.78rem;
  color: #5a6478;
  margin-bottom: 12px;
}
.modal-meta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.modal-dept {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: #8892a4;
  font-weight: 500;
}
.modal-dept::before {
  content: '';
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--domain-color, #FFC629);
}
.modal-sem {
  font-size: 0.78rem;
  color: #5a6478;
}

/* === Modal Links (poster, detail, presentation) === */
.modal-links {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.modal-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 500;
  font-family: inherit;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}
.modal-link-btn svg {
  width: 14px; height: 14px;
  flex-shrink: 0;
}
.modal-link-btn.primary {
  background: rgba(255,198,41,0.12);
  border: 1px solid rgba(255,198,41,0.25);
  color: #FFC629;
}
.modal-link-btn.primary:hover {
  background: rgba(255,198,41,0.2);
}
.modal-link-btn.secondary {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  color: #8892a4;
}
.modal-link-btn.secondary:hover {
  background: rgba(255,255,255,0.08);
  color: #e0e0e0;
}
.modal-link-btn.disabled {
  opacity: 0.4;
  cursor: default;
  pointer-events: none;
}

/* === Modal Topics === */
.modal-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.modal-topic-tag {
  font-size: 0.68rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  color: #8892a4;
  letter-spacing: 0.02em;
}

.modal-divider {
  height: 1px;
  background: rgba(255,255,255,0.06);
  margin-bottom: 20px;
}
.modal-abstract {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 0.92rem;
  color: #9a9faa;
  line-height: 1.75;
  margin-bottom: 28px;
}

/* === Take It Further === */
.modal-next-steps h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  color: #5a6478;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.next-steps-subtitle {
  font-size: 0.75rem;
  color: #5a6478;
  margin-bottom: 12px;
  font-style: italic;
}
.next-steps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.next-step-card {
  background: rgba(255,255,255,0.025);
  border: 1px solid rgba(255,255,255,0.06);
  border-left: 2px solid rgba(255,198,41,0.25);
  border-radius: 6px;
  padding: 12px 14px;
  transition: background 0.15s;
}
.next-step-card:hover {
  background: rgba(255,255,255,0.04);
}
.next-step-card a {
  text-decoration: none;
  color: inherit;
  display: block;
}
.next-step-icon {
  display: inline-block;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #FFC629;
  background: rgba(255, 198, 41, 0.08);
  border: 1px solid rgba(255, 198, 41, 0.15);
  border-radius: 3px;
  padding: 2px 7px;
  margin-bottom: 8px;
}
.next-step-title {
  font-size: 0.8rem;
  font-weight: 500;
  color: #e0e0e0;
  margin-bottom: 3px;
}
.next-step-desc {
  font-size: 0.72rem;
  color: #5a6478;
  line-height: 1.4;
}

/* === Related Projects (Modal) === */
.related-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  color: #5a6478;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.related-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.related-back-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.72rem;
  font-weight: 500;
  color: #FFC629;
  background: rgba(255,198,41,0.06);
  border: 1px solid rgba(255,198,41,0.12);
  border-radius: 6px;
  padding: 8px 14px;
  cursor: pointer;
  transition: all 0.15s;
  margin-bottom: 4px;
  width: 100%;
}
.related-back-btn:hover {
  background: rgba(255,198,41,0.12);
  border-color: rgba(255,198,41,0.25);
}
.related-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: rgba(255,255,255,0.025);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.18s;
  position: relative;
}
.related-card:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.1);
}
.related-card-tooltip {
  display: none;
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  right: 0;
  max-width: 520px;
  max-height: 200px;
  overflow-y: auto;
  background: #1c1c1c;
  border: 1px solid rgba(255,198,41,0.12);
  border-radius: 8px;
  padding: 12px 14px;
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 0.75rem;
  line-height: 1.6;
  color: #b0b4bc;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  z-index: 10;
  pointer-events: none;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.08) transparent;
}
.related-card:hover .related-card-tooltip {
  display: block;
}
.related-card-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  opacity: 0.8;
}
.related-card-info {
  flex: 1;
  min-width: 0;
}
.related-card-title {
  font-size: 0.8rem;
  font-weight: 500;
  color: #e0e0e0;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.related-card-meta {
  font-size: 0.68rem;
  color: #5a6478;
  margin-top: 2px;
}
.related-card-arrow {
  color: #5a6478;
  flex-shrink: 0;
  transition: color 0.15s;
}
.related-card:hover .related-card-arrow {
  color: #8892a4;
}

/* === Legend (inside graph) === */
.legend-item text {
  font-size: 11px;
  fill: #5a6478;
  font-family: 'Montserrat', sans-serif;
}

/* === Loading state === */
.loading-spinner {
  width: 24px; height: 24px;
  border: 2px solid rgba(255,255,255,0.08);
  border-top-color: #FFC629;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 40px auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===========================================
   ANALYTICS VIEW
   =========================================== */
.analytics-view {
  position: fixed;
  top: 64px; left: 0; right: 0; bottom: 0;
  z-index: 1;
  display: none;
  overflow: hidden;
}
.analytics-view.active {
  display: block;
}
.analytics-scroll {
  height: 100%;
  overflow-y: auto;
  padding: 40px 48px 60px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.08) transparent;
}
.analytics-scroll::-webkit-scrollbar { width: 6px; }
.analytics-scroll::-webkit-scrollbar-track { background: transparent; }
.analytics-scroll::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 3px; }

/* Hero Stats */
.analytics-hero {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.hero-stat {
  background: rgba(28,28,28,0.8);
  border: 1px solid rgba(255,198,41,0.08);
  border-radius: 10px;
  padding: 24px 20px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.hero-stat-num {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-size: 2.4rem;
  font-weight: 600;
  color: #FFC629;
  line-height: 1;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}
.hero-stat-label {
  display: block;
  font-size: 0.72rem;
  color: #5a6478;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Analytics Sections */
.analytics-section {
  max-width: 900px;
  margin: 0 auto 48px;
}
.analytics-section-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: #e0e0e0;
  margin-bottom: 4px;
}
.analytics-section-sub {
  font-size: 0.8rem;
  color: #5a6478;
  margin-bottom: 20px;
}

/* Chart containers */
.chart-container {
  background: rgba(28,28,28,0.6);
  border: 1px solid rgba(255,198,41,0.08);
  border-radius: 10px;
  padding: 24px;
  height: 360px;
  position: relative;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.chart-container-short {
  height: 280px;
}
.chart-container canvas {
  width: 100% !important;
  height: 100% !important;
}

/* Trend Legend */
.trend-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 14px;
  justify-content: center;
}
.trend-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  color: #5a6478;
  cursor: pointer;
  transition: color 0.15s;
}
.trend-legend-item:hover {
  color: #e0e0e0;
}
.trend-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Domain Chips */
.domain-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.domain-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  color: #8892a4;
  cursor: pointer;
  transition: all 0.2s;
}
.domain-chip:hover {
  background: rgba(255,255,255,0.06);
  color: #e0e0e0;
}
.domain-chip.active {
  border-color: var(--chip-color);
  background: var(--chip-bg);
  color: var(--chip-color);
}
.domain-chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Word Cloud */
.word-cloud-container {
  background: rgba(28,28,28,0.6);
  border: 1px solid rgba(255,198,41,0.08);
  border-radius: 10px;
  padding: 32px;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px 10px;
}
.word-cloud-placeholder {
  font-size: 0.82rem;
  color: #5a6478;
  font-style: italic;
}
.cloud-word {
  display: inline-block;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  line-height: 1.3;
  cursor: default;
  transition: opacity 0.15s;
  padding: 2px 4px;
}
.cloud-word:hover {
  opacity: 0.7;
}

/* ===========================================
   ABOUT MODAL
   =========================================== */
.about-modal {
  max-width: 560px;
}
.about-header {
  text-align: center;
  margin-bottom: 24px;
}
.about-logo {
  width: 48px;
  height: 48px;
  color: #FFC629;
  margin-bottom: 12px;
}
.about-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: #e0e0e0;
  margin-bottom: 4px;
}
.about-tagline {
  font-size: 0.85rem;
  color: #8892a4;
}
.about-desc {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 0.88rem;
  color: #9a9faa;
  line-height: 1.75;
  margin-bottom: 24px;
}
.about-section {
  margin-bottom: 24px;
}
.about-section h4 {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.78rem;
  font-weight: 500;
  color: #5a6478;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}
.about-stats-list {
  list-style: none;
  padding: 0;
}
.about-stats-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.82rem;
  color: #8892a4;
  line-height: 1.6;
  margin-bottom: 6px;
}
.about-stats-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #FFC629;
  opacity: 0.4;
}
.about-tech-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.about-chip {
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 4px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  color: #8892a4;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.about-footer {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.about-footer p {
  font-size: 0.85rem;
  color: #8892a4;
  margin-bottom: 4px;
}
.about-footer strong {
  color: #e0e0e0;
}
.about-linkedin {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: #0A66C2;
  background: rgba(10, 102, 194, 0.1);
  border-radius: 4px;
  margin-left: 6px;
  vertical-align: middle;
  transition: all 0.15s;
}
.about-linkedin:hover {
  background: rgba(10, 102, 194, 0.2);
  transform: translateY(-1px);
}
.about-ksu {
  font-size: 0.75rem !important;
  color: #5a6478 !important;
}

/* ===========================================
   MOBILE LIST VIEW — Premium Redesign
   =========================================== */
.mobile-list-view {
  display: none;
}
.mobile-list-scroll {
  height: 100%;
  overflow-y: auto;
  padding: 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.08) transparent;
  -webkit-overflow-scrolling: touch;
}
.mobile-list-scroll::-webkit-scrollbar { width: 3px; }
.mobile-list-scroll::-webkit-scrollbar-track { background: transparent; }
.mobile-list-scroll::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 2px; }

/* === Mobile Domain Bubble Scroll === */
.m-domain-scroll-wrap {
  padding: 16px 0 8px;
  position: relative;
}
.m-domain-scroll {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 0 16px 12px;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;
  scrollbar-width: none;
}
.m-domain-scroll::-webkit-scrollbar { display: none; }

.m-domain-card {
  flex-shrink: 0;
  width: 108px;
  min-height: 88px;
  background: rgba(28,28,28,0.8);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 12px;
  padding: 12px 10px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: all 0.2s ease;
  scroll-snap-align: start;
  position: relative;
  overflow: hidden;
}
.m-domain-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--dc-color);
  opacity: 0.6;
  transition: opacity 0.2s;
}
.m-domain-card:active {
  transform: scale(0.98);
  opacity: 0.85;
}
.m-domain-card.active {
  border-color: #FFC629;
  background: rgba(255,198,41,0.06);
  box-shadow: 0 0 0 1px rgba(255,198,41,0.15);
}
.m-domain-card.active::before {
  opacity: 1;
}
.m-domain-card-count {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: #FFC629;
  line-height: 1;
  letter-spacing: -0.02em;
}
.m-domain-card-name {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.62rem;
  font-weight: 500;
  color: #8892a4;
  text-align: center;
  line-height: 1.25;
  letter-spacing: 0.01em;
}
.m-domain-card-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  margin-top: 2px;
}

/* === Mobile Sort Bar === */
.m-sort-bar {
  display: flex;
  gap: 8px;
  padding: 0 16px 10px;
}
.m-sort-btn {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: #5a6478;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 14px;
  padding: 5px 14px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: all 0.15s ease;
}
.m-sort-btn.active {
  color: #FFC629;
  background: rgba(255,198,41,0.08);
  border-color: rgba(255,198,41,0.2);
}

/* === Mobile Stats Bar === */
.m-stats-bar {
  text-align: center;
  padding: 0 16px 8px;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.7rem;
  color: #5a6478;
  letter-spacing: 0.02em;
}

/* === Mobile Project List === */
.m-project-list {
  padding: 0 16px 24px;
}
.m-domain-group-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 0 8px;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  color: #8892a4;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.m-domain-group-header-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.m-domain-group-header-count {
  font-weight: 400;
  color: #5a6478;
  margin-left: auto;
  text-transform: none;
  letter-spacing: 0;
}

.m-project-card {
  display: flex;
  align-items: stretch;
  background: #1c1c1c;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  margin-bottom: 8px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: all 0.15s;
  overflow: hidden;
  min-height: 56px;
}
.m-project-card:active {
  background: rgba(255,255,255,0.04);
  transform: scale(0.99);
}
.m-project-card-accent {
  width: 3px;
  flex-shrink: 0;
}
.m-project-card-body {
  flex: 1;
  min-width: 0;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.m-project-card-title {
  font-size: 0.84rem;
  font-weight: 550;
  color: #e0e0e0;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.m-project-card-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.68rem;
  color: #5a6478;
  flex-wrap: wrap;
}
.m-project-card-type {
  color: #6a7180;
}
.m-project-card-award-row {
  margin-top: 4px;
}
.m-project-card-winner {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.6rem;
  font-weight: 600;
  color: #FFC629;
  background: rgba(255,198,41,0.1);
  border: 1px solid rgba(255,198,41,0.18);
  border-radius: 4px;
  padding: 2px 7px;
  white-space: nowrap;
  letter-spacing: 0.01em;
}
.m-project-card-icons {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.65rem;
  opacity: 0.4;
  flex-shrink: 0;
}

/* === Mobile Search Expand === */
.m-search-toggle {
  display: none;
}

/* === Mobile Filter Bottom Sheet === */
.m-filter-toggle {
  display: none;
}
.m-filter-sheet-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 400;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}
.m-filter-sheet-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.m-filter-sheet {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 401;
  background: #1c1c1c;
  border-top: 1px solid rgba(255,198,41,0.1);
  border-radius: 20px 20px 0 0;
  padding: 20px 20px 32px;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 65vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.m-filter-sheet-overlay.open .m-filter-sheet {
  transform: translateY(0);
}
.m-filter-sheet-handle {
  width: 36px;
  height: 4px;
  background: rgba(255,255,255,0.15);
  border-radius: 2px;
  margin: 0 auto 16px;
}
.m-filter-sheet-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: #e0e0e0;
  margin-bottom: 14px;
}
.m-filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.m-filter-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 20px;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.78rem;
  font-weight: 500;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  color: #8892a4;
  cursor: pointer;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
  min-height: 40px;
}
.m-filter-pill:active {
  transform: scale(0.96);
}
.m-filter-pill.active {
  background: rgba(255,198,41,0.12);
  border-color: rgba(255,198,41,0.3);
  color: #FFC629;
}

/* === Mobile Search Bar Expanded === */
.m-search-expanded {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 350;
  background: rgba(18,18,18,0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 10px 12px;
  height: 56px;
  align-items: center;
  gap: 10px;
}
.m-search-expanded.open {
  display: flex;
}
.m-search-expanded input {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,198,41,0.2);
  border-radius: 10px;
  padding: 10px 14px;
  color: #e0e0e0;
  font-size: 0.9rem;
  font-family: 'Montserrat', sans-serif;
  outline: none;
  min-height: 44px;
}
.m-search-expanded input::placeholder { color: #5a6478; }
.m-search-expanded input:focus {
  border-color: rgba(255,198,41,0.5);
}
.m-search-cancel {
  background: none;
  border: none;
  color: #FFC629;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 8px 4px;
  cursor: pointer;
  min-height: 44px;
  display: flex;
  align-items: center;
}

/* === Empty state for mobile === */
.m-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  text-align: center;
}
.m-empty-state-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  opacity: 0.5;
}
.m-empty-state-text {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.88rem;
  color: #5a6478;
  font-weight: 500;
}
.m-empty-state-sub {
  font-size: 0.75rem;
  color: #3e4555;
  margin-top: 4px;
}

/* ===========================================
   ENTRY ANIMATION helpers
   =========================================== */
.domain-node {
  opacity: 0;
  transition: opacity 0.5s ease;
}
.domain-node.animate-in {
  opacity: 1;
}
.project-node {
  opacity: 0;
  transition: opacity 0.4s ease;
}
.project-node.animate-in {
  opacity: 1;
}

/* ===========================================
   RESPONSIVE
   =========================================== */
@media (max-width: 768px) {
  .site-header { padding: 0 12px; height: 56px; }
  .header-inner { gap: 8px; }

  /* Hide graph, show mobile list */
  .canvas-area { display: none !important; }
  #particleCanvas { display: none !important; }
  .graph-hint { display: none !important; }
  .stat-bar { display: none !important; }

  .mobile-list-view {
    display: block;
    position: fixed;
    top: 56px; left: 0; right: 0; bottom: 0;
    z-index: 1;
    overflow: hidden;
  }
  .mobile-list-view.hidden-mobile {
    display: none;
  }

  /* Analytics on mobile */
  .analytics-view {
    top: 56px;
  }
  .analytics-scroll {
    padding: 20px 16px 40px;
  }
  .analytics-hero {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 28px;
  }
  .hero-stat { padding: 16px 14px; }
  .hero-stat-num { font-size: 1.6rem; }
  .hero-stat-label { font-size: 0.65rem; }
  .chart-container { padding: 12px; height: 260px; }
  .chart-container-short { height: 200px; }
  .analytics-section {
    margin-bottom: 28px;
  }
  .analytics-section-title {
    font-size: 0.95rem;
  }
  .analytics-section-sub {
    font-size: 0.75rem;
    margin-bottom: 14px;
  }
  .trend-legend {
    gap: 8px;
    margin-top: 10px;
  }
  .trend-legend-item {
    font-size: 0.65rem;
  }
  .domain-chips {
    gap: 6px;
  }
  .domain-chip {
    padding: 5px 10px;
    font-size: 0.72rem;
  }
  .word-cloud-container {
    padding: 20px;
    min-height: 160px;
  }

  /* Side panel full overlay */
  .side-panel {
    width: 100%;
    top: 0;
    height: 100vh;
    z-index: 300;
    border-left: none;
  }

  /* Modal full screen — slide-up */
  .modal-overlay {
    align-items: flex-end;
  }
  .modal {
    max-width: 100vw;
    width: 100vw;
    max-height: 100vh;
    max-height: 100dvh;
    height: 100vh;
    height: 100dvh;
    border-radius: 0;
    padding: 18px;
    padding-top: calc(env(safe-area-inset-top, 20px) + 48px);
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .modal-overlay.open .modal {
    transform: translateY(0);
  }
  .modal-close {
    top: calc(env(safe-area-inset-top, 20px) + 12px);
    right: 14px;
    width: 36px;
    height: 36px;
    z-index: 10;
    background: rgba(255,255,255,0.08);
  }
  .modal-title { font-size: 1.1rem; }
  .next-steps-grid { grid-template-columns: 1fr; }
  .related-grid { flex-direction: column; }

  /* Header: hide desktop search & semester, show mobile buttons */
  .search-wrap { display: none !important; }
  .semester-select { display: none !important; }
  .view-toggle-btn span { display: none; }
  .view-toggle-btn { padding: 6px 8px; }
  .logo-text { font-size: 0.88rem; }
  .logo-sub { display: none; }
  .logo-icon { width: 28px; height: 28px; }
  .logo-lockup { gap: 8px; }

  /* Show mobile search & filter buttons */
  .m-search-toggle,
  .m-filter-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    padding: 6px;
    cursor: pointer;
    color: #5a6478;
    transition: all 0.2s;
    flex-shrink: 0;
    min-width: 36px;
    min-height: 36px;
  }
  .m-search-toggle:active,
  .m-filter-toggle:active {
    background: rgba(255,255,255,0.08);
    color: #e0e0e0;
  }
  .m-search-toggle svg,
  .m-filter-toggle svg {
    width: 18px;
    height: 18px;
  }
  .m-filter-toggle.has-filter {
    border-color: rgba(255,198,41,0.3);
    color: #FFC629;
    background: rgba(255,198,41,0.08);
  }
}

/* === Animations === */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.project-card { animation: fadeIn 0.25s ease both; }

@keyframes fadeInGraph {
  from { opacity: 0; }
  to { opacity: 1; }
}