/* ==========================================================================
   PORTFOLIO SECTORS STYLING (DARK & LIGHT THEME ADAPTIVE)
   ========================================================================== */

/* ==========================================================================
   SECTOR 01: THE SINGULAR NEXUS (HERO EXPLORER)
   ========================================================================== */
.hero-nexus-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  min-height: calc(86vh - var(--hud-height));
  padding-top: 24px;
}

.hero-identity-pane {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.explorer-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--cyan-beam);
  background: rgba(2, 132, 199, 0.08);
  border: 1px solid var(--space-surface-border);
  padding: 5px 14px;
  border-radius: 4px;
  width: fit-content;
  font-weight: 600;
}

.hero-name-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-main);
  white-space: nowrap;
}

.hero-name-title .gradient-highlight {
  background: linear-gradient(135deg, var(--text-main) 30%, var(--cyan-beam) 80%, var(--blue-doppler) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-prof-titles {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan-beam);
  font-weight: 600;
  line-height: 1.5;
}

.hero-guidance-callout {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(2, 132, 199, 0.08);
  border: 1px solid var(--cyan-beam);
  border-radius: 8px;
  padding: 8px 14px;
  width: fit-content;
  max-width: 100%;
  font-size: 0.88rem;
  color: var(--text-main);
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.12);
}

.guidance-callout-icon {
  color: var(--cyan-beam);
  font-size: 1rem;
}

.guidance-callout-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

.guidance-callout-text strong {
  color: var(--cyan-beam);
}

.cosmic-btn-guidance {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.18), rgba(59, 130, 246, 0.22));
  border: 1.5px solid var(--cyan-beam);
  color: var(--cyan-beam);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.2);
}

.cosmic-btn-guidance:hover {
  transform: translateY(-2px);
  background: var(--cyan-beam);
  color: #030712 !important;
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

.hero-chair-info {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.hero-summary-paragraph {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.hero-summary-paragraph strong {
  color: var(--text-main);
}

.hero-mission-quote {
  position: relative;
  background: var(--space-surface);
  border-left: 3px solid var(--cyan-beam);
  border: 1px solid var(--space-surface-border);
  border-left-width: 3px;
  padding: 14px 18px;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  font-size: 0.94rem;
  color: var(--text-main);
  line-height: 1.6;
}

.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 4px;
}

.hero-stat-card {
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  padding: 12px 14px;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.stat-number {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--text-main);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-top: 2px;
  font-weight: 500;
}

.hero-cta-row {
  display: flex;
  gap: 12px;
  margin-top: 8px;
  flex-wrap: wrap;
  align-items: center;
}

/* Hero Right: Kerr Black Hole Simulation & Hologram Container */
.hero-simulation-pane {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.blackhole-container {
  width: 100%;
  height: 440px;
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: radial-gradient(circle at center, rgba(10, 16, 32, 0.85) 0%, rgba(2, 4, 9, 0.98) 100%);
  border: 1px solid var(--space-surface-border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

#blackhole-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.sim-hud-overlay {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}

.sim-hud-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan-beam);
  background: rgba(3, 6, 15, 0.75);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid rgba(0, 242, 254, 0.2);
}

/* Floating Portrait Pill */
.hero-portrait-badge {
  position: absolute;
  bottom: 14px;
  left: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--space-surface-border);
  border-radius: 30px;
  padding: 6px 16px 6px 6px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.portrait-thumb {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--cyan-beam);
}

.portrait-info {
  display: flex;
  flex-direction: column;
}

.portrait-name {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
}

.portrait-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--cyan-beam);
  font-weight: 600;
}

/* ==========================================================================
   SECTOR 02: RESEARCH & TEACHING WORLDS (PLANETARY PILLARS)
   ========================================================================== */
.research-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.research-world-card {
  position: relative;
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  border-radius: 12px;
  padding: 26px;
  backdrop-filter: blur(14px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  box-shadow: var(--box-shadow-panel);
}

.research-world-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.world-card-glow {
  position: absolute;
  top: -40px;
  right: -40px;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  opacity: 0.12;
  pointer-events: none;
}

.world-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.world-icon {
  font-size: 1.5rem;
  color: var(--accent);
}

.world-spectral-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  background: rgba(2, 132, 199, 0.08);
  border: 1px solid var(--accent);
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
}

.world-card-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.25;
}

.world-card-summary {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.55;
}

.world-equation-box {
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--space-surface-border);
  border-left: 3px solid var(--accent);
  padding: 10px 14px;
  border-radius: 4px;
  margin-bottom: 18px;
}

[data-theme="light"] .world-equation-box {
  background: rgba(241, 245, 249, 0.7);
}

.eq-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-bottom: 4px;
  font-weight: 500;
}

.latex-eq {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--text-main);
  font-weight: 600;
}

.world-card-footer {
  display: flex;
  justify-content: flex-end;
}

.btn-inspect-world {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 7px 14px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-inspect-world:hover {
  background: var(--accent);
  color: #ffffff;
}

/* ==========================================================================
   SECTOR 03: QUESTION BANK & PROBLEM VAULT
   ========================================================================== */
.pub-toolbar {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 28px;
}

.pub-search-bar {
  position: relative;
  width: 100%;
}

.pub-search-input {
  width: 100%;
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  border-radius: 8px;
  padding: 12px 18px 12px 42px;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.pub-search-input:focus {
  border-color: var(--cyan-beam);
}

.search-icon-marker {
  position: absolute;
  top: 50%;
  left: 15px;
  transform: translateY(-50%);
  color: var(--cyan-beam);
  font-size: 1rem;
}

.pub-categories-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.pub-category-btn {
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s ease;
}

.pub-category-btn:hover {
  color: var(--text-main);
  border-color: var(--cyan-beam);
}

.pub-category-btn.active {
  background: rgba(2, 132, 199, 0.15);
  border-color: var(--cyan-beam);
  color: var(--cyan-beam);
  font-weight: 700;
}

.publications-stream {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.publication-discovery-card {
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  border-radius: 10px;
  padding: 22px;
  backdrop-filter: blur(12px);
  box-shadow: var(--box-shadow-panel);
  transition: all 0.2s ease;
}

.publication-discovery-card:hover {
  border-color: var(--cyan-beam);
}

.pub-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.pub-meta-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.pub-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--cyan-beam);
}

.pub-journal {
  font-size: 0.85rem;
  color: var(--text-main);
  font-weight: 600;
}

.pub-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  background: rgba(121, 40, 202, 0.12);
  color: var(--violet-singularity);
  border: 1px solid rgba(121, 40, 202, 0.3);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.pub-citations {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.cite-count {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gold-pulsar);
}

.cite-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
}

.pub-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
  line-height: 1.35;
}

.pub-authors {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.pub-identifiers {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.identifier-chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.08);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--space-surface-border);
}

[data-theme="light"] .identifier-chip {
  background: #f1f5f9;
}

.pub-abstract {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), margin-bottom 0.2s ease;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 6px;
}

[data-theme="light"] .pub-abstract {
  background: #f8fafc;
}

.pub-abstract.expanded {
  max-height: 300px;
  margin-bottom: 16px;
  padding: 14px 18px;
  border-left: 3px solid var(--cyan-beam);
}

.pub-abstract p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.pub-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-pub-action {
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn-pub-action:hover {
  background: rgba(2, 132, 199, 0.12);
  border-color: var(--cyan-beam);
  color: var(--cyan-beam);
}

/* ==========================================================================
   SECTOR 04: CONSTELLATION OF HONORS & MILESTONES
   ========================================================================== */
.constellation-wrapper {
  display: grid;
  grid-template-columns: 1.35fr 0.95fr;
  gap: 28px;
  align-items: start;
}

.constellation-canvas-container {
  width: 100%;
  height: 480px;
  position: relative;
  background: radial-gradient(circle at center, rgba(12, 18, 38, 0.85) 0%, rgba(2, 4, 9, 0.98) 100%);
  border: 1px solid var(--space-surface-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--box-shadow-panel);
}

#constellation-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.constellation-active-card {
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  border-radius: 12px;
  padding: 26px;
  backdrop-filter: blur(16px);
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-shadow: var(--box-shadow-panel);
}

.card-hint {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.radar-scan-icon {
  width: 44px;
  height: 44px;
  border: 1.5px dashed var(--cyan-beam);
  border-radius: 50%;
  margin: 0 auto 14px;
  animation: spin 8s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.active-honor-header {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.honor-year-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: rgba(255, 215, 0, 0.12);
  color: var(--gold-pulsar);
  border: 1px solid rgba(255, 215, 0, 0.3);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
}

.honor-category-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: rgba(2, 132, 199, 0.1);
  color: var(--cyan-beam);
  border: 1px solid var(--space-surface-border);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.active-honor-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
  line-height: 1.25;
}

.active-honor-body {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.active-honor-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
}

.active-honor-citation {
  border-top: 1px solid var(--space-surface-border);
  padding-top: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.citation-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 600;
}

.citation-value {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--cyan-beam);
}

/* ==========================================================================
   SECTOR 05: THE GRAVITATIONAL WEB (COLLABORATIONS)
   ========================================================================== */
.collab-wrapper {
  display: grid;
  grid-template-columns: 1.35fr 0.95fr;
  gap: 28px;
  align-items: start;
}

.collab-canvas-container {
  width: 100%;
  height: 460px;
  background: radial-gradient(circle at center, rgba(12, 18, 38, 0.85) 0%, rgba(2, 4, 9, 0.98) 100%);
  border: 1px solid var(--space-surface-border);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  box-shadow: var(--box-shadow-panel);
}

#collab-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.collab-info-pane {
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  border-radius: 12px;
  padding: 26px;
  backdrop-filter: blur(16px);
  min-height: 380px;
  box-shadow: var(--box-shadow-panel);
}

.network-hint {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.node-type-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  border: 1px solid;
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 8px;
  font-weight: 600;
}

.node-info-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--text-main);
  margin-bottom: 10px;
  font-weight: 700;
}

.node-info-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   SECTOR 06: SPACETIME GEODESICS (TIMELINE & COURSES)
   ========================================================================== */
.geodesic-timeline {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
  padding-left: 28px;
  border-left: 2px solid var(--cyan-beam);
  margin-bottom: 50px;
}

.geodesic-epoch-node {
  position: relative;
}

.epoch-indicator {
  position: absolute;
  top: 4px;
  left: -35px;
  width: 12px;
  height: 12px;
  background: var(--cyan-beam);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--cyan-beam);
}

.epoch-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--cyan-beam);
  margin-bottom: 4px;
  font-weight: 700;
}

.epoch-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.epoch-sub {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 500;
}

.epoch-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Courses Pedagogy Grid */
.courses-header-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text-main);
  margin-bottom: 20px;
  font-weight: 700;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.course-card {
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  border-radius: 10px;
  padding: 22px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--box-shadow-panel);
}

.course-code-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gold-pulsar);
  background: rgba(255, 215, 0, 0.1);
  padding: 3px 8px;
  border-radius: 4px;
  width: fit-content;
  margin-bottom: 8px;
  font-weight: 700;
}

.course-title {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
  line-height: 1.3;
}

.course-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan-beam);
  margin-bottom: 10px;
  font-weight: 600;
}

.course-topics {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 18px;
}

.course-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--space-surface-border);
  padding-top: 12px;
}

.enrollment-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ==========================================================================
   SECTOR 08: SUBSPACE TRANSMISSION (CONTACT)
   ========================================================================== */
.transmission-layout {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 32px;
}

.transmission-info-pane {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.office-coords-card {
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  padding: 24px;
  border-radius: 10px;
  box-shadow: var(--box-shadow-panel);
}

.coord-item {
  margin-bottom: 14px;
}

.coord-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-bottom: 3px;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.coord-value {
  font-size: 0.92rem;
  color: var(--text-main);
  font-weight: 600;
}

/* Science Guidance Callout Banner */
.science-guidance-banner {
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  border-left: 4px solid var(--cyan-beam);
  border-radius: 12px;
  padding: 28px 32px;
  margin-bottom: 32px;
  box-shadow: var(--box-shadow-panel);
}

.guidance-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--cyan-beam);
  background: rgba(2, 132, 199, 0.1);
  border: 1px solid var(--space-surface-border);
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: 700;
  margin-bottom: 10px;
}

.guidance-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.guidance-desc {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 950px;
}

.guidance-desc strong {
  color: var(--text-main);
}

/* Guidance 4-Pillar Grid */
.guidance-pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 22px;
  margin-bottom: 22px;
}

.guidance-pillar-card {
  background: rgba(3, 7, 18, 0.35);
  border: 1px solid var(--space-surface-border);
  border-radius: 8px;
  padding: 18px 20px;
  transition: all 0.2s ease;
}

[data-theme="light"] .guidance-pillar-card {
  background: rgba(248, 250, 252, 0.9);
}

.guidance-pillar-card:hover {
  border-color: var(--cyan-beam);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.15);
}

.pillar-icon {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.pillar-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.pillar-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.guidance-banner-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px dashed var(--space-surface-border);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.guidance-footer-badge {
  color: var(--cyan-beam);
  font-weight: 700;
  letter-spacing: 0.08em;
}

/* Direct Contact Layout */
.direct-contact-layout {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 32px;
  align-items: stretch;
}

.direct-email-card {
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  border-radius: 12px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--box-shadow-panel);
}

.email-card-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--quantum-emerald);
  margin-bottom: 12px;
  font-weight: 700;
}

.email-card-heading {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.email-card-sub {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 24px;
}

.email-action-box {
  background: var(--space-dark);
  border: 1px solid var(--space-surface-border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.email-display-text {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.email-main-link {
  color: var(--cyan-beam);
  text-decoration: none;
  word-break: break-all;
  transition: color 0.2s ease;
}

.email-main-link:hover {
  color: var(--text-main);
  text-decoration: underline;
}

.email-action-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-copy-email {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-copy-email:hover {
  border-color: var(--cyan-beam);
  color: var(--cyan-beam);
}

.email-response-time {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.direct-coords-card {
  background: var(--space-surface);
  border: 1px solid var(--space-surface-border);
  border-radius: 12px;
  padding: 28px;
  box-shadow: var(--box-shadow-panel);
}

.coords-card-heading {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: var(--cyan-beam);
  margin-bottom: 20px;
  font-weight: 700;
}

.coords-items-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.direct-coord-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
  border-bottom: 1px solid var(--space-surface-border);
  padding-bottom: 10px;
}

.direct-coord-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.coord-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  font-weight: 600;
}

.coord-val {
  font-size: 0.92rem;
  color: var(--text-main);
  font-weight: 600;
}

.coord-val a {
  color: var(--cyan-beam);
  text-decoration: none;
}

.coord-val a:hover {
  text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 1040px) {
  .hero-nexus-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .research-grid {
    grid-template-columns: 1fr;
  }
  .constellation-wrapper, .collab-wrapper, .direct-contact-layout {
    grid-template-columns: 1fr;
  }
  .courses-grid {
    grid-template-columns: 1fr;
  }
  .hero-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .hero-name-title {
    font-size: clamp(1.75rem, 8vw, 2.4rem);
    white-space: nowrap;
  }
  .hero-prof-titles {
    font-size: 0.88rem;
    line-height: 1.6;
  }
  .hero-guidance-callout {
    width: 100%;
  }
  .guidance-callout-text {
    font-size: 0.76rem;
  }
  .hero-stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .stat-number {
    font-size: 1.05rem;
  }
  .stat-label {
    font-size: 0.62rem;
  }
  .blackhole-container {
    height: 320px;
  }
  .constellation-stage {
    min-height: 380px;
  }
  .network-stage {
    min-height: 380px;
  }
  .direct-contact-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .guidance-pillars-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .science-guidance-banner {
    padding: 18px 16px;
  }
  .direct-email-card, .direct-coords-card {
    padding: 20px 16px;
  }
  .email-display-text {
    font-size: 1rem;
  }
  .cosmic-sector {
    padding: 60px 0 36px;
  }
  .guidance-title {
    font-size: 1.25rem;
  }
}

@media (max-width: 440px) {
  .hero-stats-grid {
    grid-template-columns: 1fr;
  }
  .hero-cta-row {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-cta-row a {
    justify-content: center;
  }
}