/* ===== PMAS Unified Clinical System — Styles ===== */

:root {
  --bg: #f0f4f8;
  --surface: #ffffff;
  --surface-hover: #f8fafc;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --text: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #dbeafe;
  --accent: #0891b2;
  --accent-light: #cffafe;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --success: #10b981;
  --viewport-bg: #0f172a;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
  --transition: 0.2s ease;
  --sidebar-width: 380px;
  --header-height: 56px;
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  overflow: hidden;
  height: 100vh;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== HEADER ===== */
.app-header {
  height: var(--header-height);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 24px;
  position: relative;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-left { display: flex; align-items: center; gap: 12px; }
.logo { display: flex; align-items: center; gap: 8px; }
.logo-icon { font-size: 22px; color: var(--primary); font-weight: 700; }
.logo-text { font-size: 18px; font-weight: 700; color: var(--text); letter-spacing: -0.5px; }
.header-subtitle { font-size: 12px; color: var(--text-muted); white-space: nowrap; }

/* Tabs */
.tab-nav { display: flex; gap: 4px; margin-left: auto; }
.tab-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 16px; border: none; background: transparent;
  color: var(--text-secondary); font-size: 13px; font-weight: 500;
  border-radius: var(--radius-sm); cursor: pointer; transition: var(--transition);
  white-space: nowrap;
}
.tab-btn:hover { background: var(--surface-hover); color: var(--text); }
.tab-btn.active {
  background: var(--primary-light); color: var(--primary); font-weight: 600;
}
.tab-btn svg { opacity: 0.7; }
.tab-btn.active svg { opacity: 1; }

/* Hamburger */
.hamburger {
  display: none; flex-direction: column; gap: 4px;
  padding: 8px; border: none; background: none; cursor: pointer;
}
.hamburger span { width: 20px; height: 2px; background: var(--text); border-radius: 1px; transition: var(--transition); }

/* ===== TAB CONTENT ===== */
.tab-content {
  display: none;
  height: calc(100vh - var(--header-height));
}
.tab-content.active { display: block; }

/* ===== LAYOUT ===== */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  height: 100%;
}

/* ===== SIDEBAR ===== */
.sidebar {
  height: 100%;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--bg);
  border-right: 1px solid var(--border);
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

/* ===== CARD ===== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.card-title {
  font-size: 13px; font-weight: 600; color: var(--text);
  margin-bottom: 12px; display: flex; align-items: center; gap: 6px;
}

/* ===== FORMS ===== */
.form-row { display: flex; gap: 8px; flex-wrap: wrap; }
.form-group { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.form-group.flex-grow, .flex-grow { flex: 1; min-width: 120px; }
.align-end { align-items: flex-end; }

label, .label-sm {
  font-size: 11px; font-weight: 600; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.5px;
}

input[type="text"], input[type="number"], input[type="date"], select, textarea {
  width: 100%; padding: 8px 10px;
  background: var(--surface-hover); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-size: 13px; font-family: inherit;
  transition: var(--transition);
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
textarea { resize: vertical; min-height: 60px; }

/* File upload */
.file-upload { position: relative; margin-bottom: 8px; }
.file-upload input[type="file"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; z-index: 2;
}
.file-upload-label {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px; border: 2px dashed var(--border);
  border-radius: var(--radius-sm); color: var(--text-secondary);
  font-size: 13px; transition: var(--transition); cursor: pointer;
}
.file-upload:hover .file-upload-label { border-color: var(--primary); color: var(--primary); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 4px;
  padding: 7px 12px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text);
  border-radius: var(--radius-sm); font-size: 12px; font-weight: 500;
  cursor: pointer; transition: var(--transition); white-space: nowrap;
  font-family: inherit;
}
.btn:hover { background: var(--surface-hover); border-color: var(--primary); }
.btn:active { transform: scale(0.97); }

.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); }

.btn-accent { background: var(--accent-light); color: var(--accent); border-color: transparent; }
.btn-accent:hover { background: var(--accent); color: #fff; }

.btn-danger { background: var(--danger-light); color: var(--danger); border-color: transparent; }
.btn-danger:hover { background: var(--danger); color: #fff; }

.btn-sm { padding: 4px 8px; font-size: 11px; }

.btn-grid { display: flex; flex-wrap: wrap; gap: 6px; }
.btn-grid.cols-3 > .btn { flex: 1; min-width: 80px; }

/* ===== BADGES ===== */
.badge {
  display: inline-block; padding: 3px 8px;
  font-size: 11px; font-weight: 600; border-radius: 20px;
  background: var(--surface-hover); color: var(--text-secondary);
  border: 1px solid var(--border);
}
.badge-info { background: var(--primary-light); color: var(--primary); border-color: transparent; }

/* ===== HINT ===== */
.hint { font-size: 12px; color: var(--text-muted); line-height: 1.4; }

/* ===== STATUS BAR ===== */
.status-bar {
  padding: 10px 14px; border-radius: var(--radius-sm);
  background: var(--primary-light); color: var(--primary);
  font-size: 12px; font-weight: 500; line-height: 1.4;
}

/* ===== METRICS ===== */
.metrics-row { display: flex; gap: 16px; flex-wrap: wrap; }
.metric-item { display: flex; flex-direction: column; gap: 4px; }
.zoom-controls { display: flex; align-items: center; gap: 4px; }
.ab-result { margin-top: 12px; padding: 12px; background: var(--surface-hover); border-radius: var(--radius-sm); }
.ab-value { font-size: 24px; font-weight: 800; color: var(--primary); margin-top: 4px; }
.ai-details { font-size: 12px; line-height: 1.5; color: var(--text-secondary); margin-top: 8px; }

/* ===== PANEL STRIP (compact inline) ===== */
.panel-strip {
  display: flex; gap: 8px; align-items: center;
}
.strip-input { flex: 1; min-width: 0; }
.strip-date { width: 130px; flex-shrink: 0; }

/* Compact upload */
.compact-upload { margin-bottom: 4px; }
.compact-upload .file-upload-label {
  padding: 8px; font-size: 12px; gap: 6px;
}

/* ===== TOOLBAR (horizontal icon strip) ===== */
.toolbar {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.toolbar-label {
  font-size: 10px; font-weight: 700; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.5px;
  white-space: nowrap; min-width: fit-content;
}
.toolbar-btns {
  display: flex; align-items: center; gap: 2px; flex-wrap: wrap;
}
.toolbar-sep {
  width: 1px; height: 20px; background: var(--border); margin: 0 4px; flex-shrink: 0;
}
.toolbar.accent-bar { border-left: 3px solid var(--accent); }

/* Toolbar buttons */
.tbtn {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border: 1px solid transparent;
  background: transparent; border-radius: 6px;
  font-size: 16px; cursor: pointer; transition: var(--transition);
  font-family: inherit; line-height: 1;
}
.tbtn:hover {
  background: var(--primary-light); border-color: var(--primary);
  transform: scale(1.1);
}
.tbtn:active { transform: scale(0.92); }
.tbtn.active {
  background: var(--primary); border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}
.tbtn.accent:hover { background: var(--accent-light); border-color: var(--accent); }
.tbtn.accent.active { background: var(--accent); border-color: var(--accent); }
.tbtn.danger:hover { background: var(--danger-light); border-color: var(--danger); }
.tbtn.ai { position: relative; }
.tbtn.ai::after {
  content: 'AI'; position: absolute; bottom: -1px; right: -1px;
  font-size: 7px; font-weight: 800; color: #fff;
  background: var(--primary); border-radius: 3px; padding: 0 2px;
  line-height: 1.2;
}

/* ===== COLLAPSIBLE PANELS ===== */
.panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); box-shadow: var(--shadow);
  overflow: hidden;
}
.panel-header {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px; font-size: 12px; font-weight: 700;
  color: var(--text); cursor: pointer; user-select: none;
  transition: var(--transition);
  list-style: none;
}
.panel-header::-webkit-details-marker { display: none; }
.panel-header::before {
  content: '▸'; font-size: 10px; color: var(--text-muted);
  transition: transform 0.2s ease; flex-shrink: 0;
}
.panel[open] > .panel-header::before { transform: rotate(90deg); }
.panel-header:hover { background: var(--surface-hover); }
.panel-header .badge {
  margin-left: auto; font-size: 10px; padding: 1px 6px;
}
.panel-body {
  padding: 0 12px 12px;
}

/* ===== EXPORT BAR ===== */
.export-bar {
  display: flex; gap: 6px;
}
.export-bar .btn { flex: 1; font-size: 12px; }

/* ===== HELP STRIP ===== */
.help-strip {
  font-size: 10px; color: var(--text-muted); line-height: 1.8;
  text-align: center;
}
.help-strip kbd {
  display: inline-block; padding: 1px 5px;
  background: var(--surface-hover); border: 1px solid var(--border);
  border-radius: 3px; font-size: 9px; font-weight: 600;
  color: var(--text-secondary); font-family: inherit;
}

/* ===== PLAN LIST ===== */
.plan-list { max-height: 300px; overflow-y: auto; }
.plan-list::-webkit-scrollbar { width: 3px; }
.plan-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* Plan item styling (generated by JS) */
.plan-list > div {
  padding: 8px 10px; margin-bottom: 4px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 12px; line-height: 1.4; cursor: pointer;
  transition: var(--transition);
}
.plan-list > div:hover { border-color: var(--primary); background: var(--primary-light); }

/* ===== VIEWPORT ===== */
.viewport-wrap {
  height: 100%; display: flex; align-items: center; justify-content: center;
  background: var(--viewport-bg); overflow: hidden; position: relative;
}

#viewport {
  position: relative; width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
#photo {
  max-width: 100%; max-height: calc(100vh - var(--header-height));
  object-fit: contain; display: block;
  transform-origin: center center;
}
#overlay {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  cursor: crosshair; transform-origin: center center;
}

/* 3D viewport */
.viewport-3d { padding: 0; }
#canvas3d-container {
  width: 100%; height: 100%;
}
#canvas3d-container canvas { display: block; width: 100%; height: 100%; }

/* Loading overlay */
.loading-overlay {
  position: absolute; inset: 0;
  display: none; align-items: center; justify-content: center;
  flex-direction: column; gap: 12px;
  background: rgba(15,23,42,0.8); color: #94a3b8;
  font-size: 14px; z-index: 10;
}
.loading-overlay.visible { display: flex; }
.spinner {
  width: 36px; height: 36px;
  border: 3px solid rgba(148,163,184,0.2); border-top-color: var(--primary);
  border-radius: 50%; animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== ABOUT PAGE ===== */
.about-page {
  height: 100%; overflow-y: auto; padding: 48px 24px;
  background: linear-gradient(180deg, #f0f4ff 0%, var(--bg) 40%);
}

/* Hero */
.about-hero { text-align: center; margin-bottom: 56px; }
.hero-badge {
  display: inline-block; padding: 6px 18px;
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--primary); background: var(--primary-light);
  border-radius: 24px; margin-bottom: 16px;
}
.hero-title {
  font-size: 52px; font-weight: 900; letter-spacing: -2px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; margin-bottom: 6px;
}
.hero-desc {
  font-size: 18px; font-weight: 600; color: var(--text-secondary); margin-bottom: 8px;
}
.hero-sub {
  font-size: 14px; color: var(--text-muted); line-height: 1.6;
  max-width: 500px; margin: 0 auto;
}

/* Features */
.features-section { max-width: 900px; margin: 0 auto 48px; }
.feature-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.feature-card {
  position: relative; background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 28px 24px; box-shadow: var(--shadow);
  overflow: hidden; transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-3px); box-shadow: var(--shadow-md);
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
}
.feature-2d::before { background: linear-gradient(90deg, var(--primary), #60a5fa); }
.feature-3d::before { background: linear-gradient(90deg, var(--accent), #22d3ee); }
.feature-num {
  font-size: 48px; font-weight: 900; line-height: 1;
  color: var(--border); margin-bottom: 12px;
}
.feature-body h2 { font-size: 20px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.feature-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 14px; }
.feature-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.ftag {
  display: inline-block; padding: 3px 10px;
  font-size: 11px; font-weight: 600; border-radius: 6px;
  background: var(--surface-hover); color: var(--text-muted);
  border: 1px solid var(--border-light);
}
.feature-2d .ftag { color: var(--primary); background: var(--primary-light); border-color: transparent; }
.feature-3d .ftag { color: var(--accent); background: var(--accent-light); border-color: transparent; }

/* Tech */
.tech-section { max-width: 900px; margin: 0 auto 48px; }
.section-title {
  font-size: 16px; font-weight: 700; color: var(--text-secondary);
  text-align: center; margin-bottom: 20px;
  text-transform: uppercase; letter-spacing: 1px;
}
.tech-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
}
.tech-item {
  text-align: center; padding: 16px 8px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  transition: var(--transition);
}
.tech-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.tech-icon { font-size: 24px; margin-bottom: 6px; }
.tech-name { font-size: 12px; font-weight: 700; color: var(--text); }
.tech-role { font-size: 10px; color: var(--text-muted); margin-top: 2px; }

/* Authors */
.authors-section { max-width: 480px; margin: 0 auto 40px; }
.authors-card {
  text-align: center; padding: 32px 28px;
  background: linear-gradient(135deg, #f0f4ff 0%, #fff 100%);
  border: 1px solid var(--border); border-radius: 16px;
  box-shadow: var(--shadow);
}
.authors-badge {
  display: inline-block; padding: 4px 14px;
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px;
  color: #b45309; background: #fef3c7; border-radius: 20px; margin-bottom: 12px;
}
.authors-uni {
  font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 2px;
}
.authors-group {
  font-size: 13px; font-weight: 500; color: var(--text-secondary); margin-bottom: 16px;
}
.authors-divider {
  width: 40px; height: 2px; background: var(--border); margin: 0 auto 16px; border-radius: 1px;
}
.authors-names { display: flex; justify-content: center; gap: 16px; }
.author-chip {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 16px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 28px; box-shadow: var(--shadow);
}
.author-avatar {
  width: 48px; height: 48px; border-radius: 50%; object-fit: cover;
  border: 2px solid var(--primary);
}
.author-info .author-name {
  font-size: 13px; font-weight: 600; color: var(--text);
  padding: 0; background: none; border: none; box-shadow: none;
}

/* Footer */
.about-footer {
  text-align: center; font-size: 12px; color: var(--text-muted);
  padding-top: 24px; border-top: 1px solid var(--border);
  max-width: 900px; margin: 0 auto;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .header-subtitle { display: none; }
  .tab-btn span { display: none; }
  .tab-btn { padding: 8px 12px; }

  .layout {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
  }
  .sidebar {
    border-right: none; border-bottom: 1px solid var(--border);
    max-height: 50vh; overflow-y: auto;
  }
  .viewport-wrap { min-height: 40vh; }
  :root { --sidebar-width: 100%; }
}

@media (max-width: 600px) {
  .app-header { padding: 0 12px; gap: 8px; }
  .tab-nav { display: none; }
  .tab-nav.open { display: flex; position: absolute; top: var(--header-height); left: 0; right: 0;
    background: var(--surface); border-bottom: 1px solid var(--border);
    padding: 8px; z-index: 99; box-shadow: var(--shadow-md);
  }
  .tab-nav.open .tab-btn span { display: inline; }
  .hamburger { display: flex; }

  .sidebar { padding: 10px; }
  .card { padding: 12px; }
  .form-row { flex-direction: column; }
  .about-page { padding: 24px 16px; }
  .hero-title { font-size: 32px; }
  .feature-row { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .authors-names { flex-direction: column; align-items: center; }
}

/* ===== SCROLLBAR (global) ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== SELECTION ===== */
::selection { background: var(--primary-light); color: var(--primary); }