/* ===========================
   H-AdminSim Project Page — Clinical Modern
   =========================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:      #059669;
  --primary-dark: #047857;
  --primary-100:  #d1fae5;
  --primary-200:  #a7f3d0;
  --accent:       #d97706;
  --accent-dark:  #b45309;
  --accent-100:   #fef3c7;
  --accent-200:   #fde68a;
  --sky:          #0284c7;
  --sky-100:      #e0f2fe;
  --sky-200:      #bae6fd;
  --rose:         #e11d48;
  --rose-100:     #ffe4e6;
  --violet:       #7c3aed;
  --violet-100:   #ede9fe;
  --violet-200:   #c4b5fd;
  --dark:         #0f172a;
  --gray-900:     #111827;
  --gray-800:     #1f2937;
  --gray-700:     #374151;
  --gray-600:     #4b5563;
  --gray-500:     #6b7280;
  --gray-400:     #9ca3af;
  --gray-300:     #d1d5db;
  --gray-200:     #e5e7eb;
  --gray-100:     #f3f4f6;
  --gray-50:      #f9fafb;
  --cream:        #fafaf9;
  --warm-50:      #fffbeb;
  --white:        #ffffff;
  --radius:       12px;
  --radius-sm:    8px;
  --shadow-sm:    0 1px 3px rgba(0,0,0,0.07);
  --shadow:       0 4px 16px rgba(0,0,0,0.07);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  color: var(--gray-900);
  background: var(--cream);
  font-size: 16px;
  line-height: 1.6;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: 780px; }

/* ===== Hero ===== */
.hero {
  background: var(--white);
  border-bottom: 3px solid var(--primary);
  color: var(--gray-900);
  padding: 72px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, var(--primary-100) 0%, transparent 65%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--accent-100) 0%, transparent 65%);
  pointer-events: none;
}

.venue-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: var(--white);
  border-radius: 999px;
  padding: 6px 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}

.venue-badge .highlight {
  opacity: 0.85;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: none;
}

.paper-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: clamp(48px, 7vw, 80px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.0;
  color: var(--primary-dark);
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.paper-subtitle {
  font-size: clamp(16px, 2.5vw, 20px);
  font-weight: 500;
  color: var(--gray-600);
  margin-bottom: 32px;
  line-height: 1.5;
  max-width: 740px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

.authors {
  font-size: 16px;
  color: var(--gray-700);
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.author {
  display: inline;
  font-weight: 600;
  color: var(--gray-900);
}

.author sup { font-size: 10px; color: var(--primary); }

.affiliations {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 36px;
  position: relative;
  z-index: 1;
}
.affiliations sup { font-size: 10px; color: var(--primary); }
.affiliations span { margin: 0 10px; }

/* Buttons */
.links {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.15s, filter 0.15s;
}
.btn:hover { transform: translateY(-2px); filter: brightness(1.07); }

.btn-primary { background: var(--primary); color: var(--white); }
.btn-dark    { background: var(--dark); color: var(--white); }
.btn-teal    { background: var(--sky); color: var(--white); }
.btn-outline { background: var(--accent); color: var(--white); }

/* ===== Video ===== */
.video-wrapper {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.12);
  background: #000;
  margin-bottom: 32px;
}

.video-wrapper video {
  display: block;
  width: 100%;
  max-height: 560px;
  object-fit: contain;
}

/* ===== Teaser ===== */
.teaser { padding: 48px 0; background: var(--gray-50); }

.teaser-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  padding: 36px;
}

.teaser-diagram { overflow-x: auto; }

.diagram-row {
  display: flex;
  align-items: stretch;
  gap: 0;
  min-width: 640px;
}

.diagram-box {
  flex: 1;
  padding: 24px 20px;
  text-align: center;
}

.diagram-box.data-box {
  background: var(--primary-100);
  border-radius: 12px 0 0 12px;
  border: 2px solid var(--primary-200);
  border-right: none;
}
.diagram-box.sim-box {
  background: var(--sky-100);
  border: 2px solid var(--sky-200);
  border-left: none;
  border-right: none;
}
.diagram-box.eval-box {
  background: var(--accent-100);
  border-radius: 0 12px 12px 0;
  border: 2px solid var(--accent-200);
  border-left: none;
}

.arrow-right {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--gray-400);
  flex-shrink: 0;
  width: 28px;
  z-index: 1;
}

.box-icon { font-size: 28px; margin-bottom: 8px; }
.data-box .box-icon { color: var(--primary-dark); }
.sim-box  .box-icon { color: var(--sky); }
.eval-box .box-icon { color: var(--accent-dark); }

.box-title { font-weight: 700; font-size: 15px; margin-bottom: 6px; }
.box-desc  { font-size: 12px; color: var(--gray-600); margin-bottom: 10px; }

.box-items { display: flex; flex-wrap: wrap; gap: 4px; justify-content: center; }
.box-items span {
  background: rgba(255,255,255,0.8);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 11px;
  font-weight: 600;
}

.teaser-caption {
  text-align: center;
  font-size: 14px;
  color: var(--gray-500);
  margin-top: 20px;
  font-style: italic;
}

/* ===== Sections ===== */
.section     { padding: 64px 0; background: var(--white); }
.section-alt { background: var(--warm-50); }

.section-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 28px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 40px;
  color: var(--gray-900);
  position: relative;
  padding-bottom: 16px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 44px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}

/* ===== Abstract ===== */
.abstract-text {
  font-size: 17px;
  line-height: 1.8;
  color: var(--gray-700);
  margin-bottom: 16px;
  text-align: justify;
}

/* ===== Cards ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--gray-200);
  border-left: 4px solid var(--primary);
  transition: transform 0.2s;
  min-height: 380px;
}
.card:hover { transform: translateX(4px); }
.card:nth-child(2) { border-left-color: var(--sky); }
.card:nth-child(3) { border-left-color: var(--accent); }
.card:nth-child(4) { border-left-color: var(--violet); }
.card:nth-child(5) { border-left-color: #0d9488; }

.card-icon {
  width: 48px; height: 48px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
}
.card-icon.blue   { background: var(--sky-100);     color: var(--sky); }
.card-icon.green  { background: var(--primary-100); color: var(--primary-dark); }
.card-icon.purple { background: var(--violet-100);  color: var(--violet); }
.card-icon.teal   { background: #ccfbf1;            color: #0f766e; }
.card-icon.amber  { background: var(--accent-100);  color: var(--accent-dark); }

.card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.card p  { font-size: 14px; color: var(--gray-500); line-height: 1.6; }

/* ===== Method — Timeline ===== */
.method-steps {
  display: flex;
  flex-direction: column;
  position: relative;
}

.method-steps::before {
  content: '';
  position: absolute;
  left: 21px;
  top: 22px;
  bottom: 22px;
  width: 2px;
  background: var(--primary-200);
  border-radius: 2px;
}

.method-step {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  padding-bottom: 44px;
  position: relative;
}
.method-step:last-child { padding-bottom: 0; }

.method-step.future .step-number {
  background: #f9fafb;
  color: #9ca3af;
  border: 3px solid var(--white);
  outline: 2px dashed #d1d5db;
}
.method-step.future .step-content h3 { color: #6b7280; }
.method-step.future .step-content p  { color: #9ca3af; }
.method-step.future::before {
  content: '';
  position: absolute;
  left: 20px;
  top: -44px;
  height: 44px;
  width: 4px;
  background: white;
  z-index: 0;
}
.method-step.future::after {
  content: '';
  position: absolute;
  left: 21px;
  top: -44px;
  height: 44px;
  width: 2px;
  background: repeating-linear-gradient(to bottom, #d1d5db 0px, #d1d5db 5px, transparent 5px, transparent 10px);
  z-index: 0;
}

.step-number {
  flex-shrink: 0;
  width: 44px; height: 44px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  font-size: 18px;
  position: relative;
  z-index: 1;
  border: 3px solid var(--white);
  outline: 2px solid var(--primary);
}

.step-content { flex: 1; padding-top: 8px; }
.step-content h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.step-content p  { color: var(--gray-700); margin-bottom: 14px; font-size: 15px; }

.disease-chips { display: flex; flex-wrap: wrap; gap: 8px; }

.chip-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  margin-right: 2px;
}

.chip {
  background: var(--primary-100);
  color: var(--primary-dark);
  border-radius: 6px;
  padding: 4px 14px;
  font-size: 13px;
  font-weight: 600;
}
.chip.blue   { background: var(--sky-100);     color: var(--sky); }
.chip.green  { background: var(--primary-100); color: var(--primary-dark); }
.chip.purple { background: var(--violet-100); color: #5b21b6; }
.chip.teal   { background: #ccfbf1;           color: #0f766e; }
.chip.amber  { background: var(--accent-100); color: var(--accent-dark); }
.chip.rose   { background: var(--rose-100);   color: var(--rose); }

.axis-table {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.axis-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  border-bottom: 1px solid var(--gray-200);
  font-size: 14px;
}
.axis-row:last-child { border-bottom: none; }
.axis-row.header {
  background: var(--primary-100);
  font-weight: 700;
  color: var(--primary-dark);
}
.axis-row span { padding: 10px 16px; }
.axis-row span:first-child {
  border-right: 1px solid var(--gray-200);
  color: var(--gray-700);
  font-weight: 500;
}

.highlight-box {
  background: var(--accent-100);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 14px 18px;
  font-size: 14px;
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  gap: 10px;
}
.highlight-box i { color: var(--accent); flex-shrink: 0; }

.rq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.rq-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-top: 3px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 16px;
}
.rq-card:nth-child(2) { border-top-color: var(--sky); }
.rq-card:nth-child(2) .rq-label { background: var(--sky); }
.rq-card:nth-child(3) { border-top-color: var(--accent); }
.rq-card:nth-child(3) .rq-label { background: var(--accent); }

.rq-label {
  display: inline-block;
  background: var(--primary);
  color: var(--white);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 700;
  margin-bottom: 6px;
}
.rq-card strong { display: block; margin-bottom: 6px; font-size: 15px; }
.rq-card p { color: var(--gray-500); font-size: 13px; margin: 0; }

/* ===== Results ===== */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.result-card {
  background: var(--primary-100);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid var(--primary-200);
}
.result-card.green-top  { background: var(--sky-100);   border-color: var(--sky-200); }
.result-card.purple-top { background: var(--violet-100); border-color: var(--violet-200); }
.result-card.teal-top   { background: var(--accent-100); border-color: var(--accent-200); }

.result-number {
  font-size: 44px;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1;
  margin-bottom: 8px;
  font-family: 'Plus Jakarta Sans', sans-serif;
}
.result-card.green-top  .result-number { color: var(--sky); }
.result-card.purple-top .result-number { color: var(--violet); }
.result-card.teal-top   .result-number { color: var(--accent-dark); }

.result-number span { font-size: 22px; font-weight: 500; color: var(--gray-500); }

.result-label { font-size: 14px; font-weight: 700; margin-bottom: 6px; color: var(--gray-800); }
.result-desc  { font-size: 13px; color: var(--gray-600); }

.results-note {
  background: var(--white);
  border: 1px solid var(--primary-200);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 14px 18px;
  font-size: 14px;
  color: var(--gray-700);
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.results-note i { color: var(--primary); flex-shrink: 0; margin-top: 2px; }

/* ===== Installation ===== */
.install-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

@media (max-width: 720px) { .install-layout { grid-template-columns: 1fr; } }

.install-info p { font-size: 15px; color: var(--gray-700); margin-bottom: 20px; }

.install-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin-bottom: 24px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--gray-200);
}
.install-table th, .install-table td { padding: 10px 14px; text-align: left; }
.install-table th {
  background: var(--primary-100);
  font-weight: 600;
  color: var(--primary-dark);
  border-bottom: 2px solid var(--primary-200);
}
.install-table td { border-bottom: 1px solid var(--gray-200); }
.install-table tr:last-child td { border-bottom: none; }

.install-access { display: flex; flex-direction: column; gap: 20px; }

.access-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.access-card > i { color: var(--primary); margin-bottom: 12px; display: block; }
.access-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.access-card p { font-size: 13px; color: var(--gray-500); margin-bottom: 16px; }

.code-block {
  background: var(--dark);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin-bottom: 16px;
  text-align: left;
  overflow-x: auto;
}
.code-block code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 13px;
  color: #86efac;
  white-space: pre;
}

.access-buttons { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* ===== BibTeX ===== */
.bibtex {
  background: var(--dark);
  border-radius: var(--radius);
  padding: 28px;
  overflow-x: auto;
}
.bibtex code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.7;
  color: #e2e8f0;
  white-space: pre;
}

/* ===== Footer ===== */
.footer {
  background: var(--gray-900);
  color: #94a3b8;
  text-align: center;
  padding: 28px;
  font-size: 13px;
  border-top: 3px solid var(--primary);
}
.footer a { color: var(--primary-200); text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer .footer-cc { margin-top: 8px; font-size: 12px; color: #475569; }

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .method-steps::before { display: none; }
  .method-step { flex-direction: column; }
  .diagram-row { flex-direction: column; min-width: unset; }
  .diagram-box.data-box {
    border-radius: 12px 12px 0 0;
    border-right: 2px solid var(--primary-200);
    border-bottom: none;
  }
  .diagram-box.sim-box {
    border-left: 2px solid var(--sky-200);
    border-right: 2px solid var(--sky-200);
    border-bottom: none;
  }
  .diagram-box.eval-box {
    border-radius: 0 0 12px 12px;
    border-left: 2px solid var(--accent-200);
    border-top: none;
  }
  .arrow-right { transform: rotate(90deg); }
  .axis-row { grid-template-columns: 1fr; }
  .axis-row span:first-child {
    border-right: none;
    border-bottom: 1px solid var(--gray-200);
  }
}