/* Design tokens (warm parchment) */
:root {
  --bg-parchment:    #f5f4ed;
  --bg-ivory:        #faf9f5;
  --bg-white:        #ffffff;

  --text-near-black: #141413;
  --text-olive-gray: #5e5d59;
  --text-stone-gray: #87867f;

  --brand-terracotta:#c96442;
  --brand-terra-dark:#a8512f;

  --color-drug:      #3b82f6;
  --color-reaction:  #ef4444;
  --color-lab:       #8b5cf6;

  --border-cream:    #f0eee6;
  --border-warm:     #e8e6dc;

  --radius-sm: 6px;
  --radius:    8px;
  --radius-lg: 12px;
  --radius-xl: 32px;

  --shadow-ring:    0 0 0 1px rgba(0,0,0,0.06);
  --shadow-whisper: rgba(0,0,0,0.05) 0px 4px 24px;
  --shadow-card:    var(--shadow-ring), var(--shadow-whisper);

  --font-serif: Georgia, 'Times New Roman', serif;
  --font-sans:  'Sarabun', system-ui, Arial, sans-serif;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }
body {
  background: var(--bg-parchment);
  color: var(--text-near-black);
  font-family: var(--font-sans);
  min-height: 100vh;
  line-height: 1.6;
}

/* App shell */
.app-shell { display: flex; flex-direction: column; min-height: 100vh; }

.app-header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-warm);
  padding: 16px 28px;
  box-shadow: var(--shadow-whisper);
}
.app-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: var(--text-near-black);
  letter-spacing: -0.01em;
}
.app-subtitle { color: var(--text-stone-gray); font-size: 0.85rem; margin-top: 2px; }

.app-main {
  display: grid;
  grid-template-columns: 320px 1fr;
  flex: 1;
  gap: 0;
}

/* Sidebar */
.sidebar {
  background: var(--bg-ivory);
  border-right: 1px solid var(--border-warm);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  max-height: calc(100vh - 80px);
}

/* Form cards */
.form-card {
  background: var(--bg-white);
  border: 1px solid var(--border-cream);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  box-shadow: var(--shadow-card);
}
.form-card-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-near-black);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-cream);
}
.reaction-title { color: var(--color-reaction); }
.lab-title       { color: var(--color-lab); }

/* Form fields */
.field-group { display: flex; flex-direction: column; gap: 4px; margin-bottom: 10px; }
.field-label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-olive-gray);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.field-input {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--border-warm);
  border-radius: var(--radius-lg);
  background: var(--bg-ivory);
  color: var(--text-near-black);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field-input:focus {
  border-color: var(--brand-terracotta);
  box-shadow: 0 0 0 2px rgba(201,100,66,0.12);
}
.field-textarea { resize: vertical; min-height: 64px; }
.field-row  { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 10px; }
.field-checks { display: flex; gap: 16px; align-items: center; }
.checkbox-label { display: flex; align-items: center; gap: 4px; font-size: 0.82rem; color: var(--text-olive-gray); cursor: pointer; }
.checkbox-label input[type="checkbox"] { accent-color: var(--brand-terracotta); width: 15px; height: 15px; }
.form-error { color: var(--color-reaction); font-size: 0.8rem; margin-bottom: 6px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s, transform 0.1s;
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--brand-terracotta);
  color: #fff;
  width: 100%;
  justify-content: center;
  margin-top: 4px;
  border-radius: var(--radius-lg);
}
.btn-primary:hover { background: var(--brand-terra-dark); }

.btn-reaction {
  background: rgba(239,68,68,0.1);
  color: var(--color-reaction);
  border: 1px solid rgba(239,68,68,0.3);
  width: 100%;
  justify-content: center;
  margin-top: 4px;
}
.btn-reaction:hover { background: rgba(239,68,68,0.2); }

.btn-lab {
  background: rgba(139,92,246,0.1);
  color: var(--color-lab);
  border: 1px solid rgba(139,92,246,0.3);
  width: 100%;
  justify-content: center;
  margin-top: 4px;
}
.btn-lab:hover { background: rgba(139,92,246,0.2); }

.btn-secondary {
  background: var(--bg-white);
  color: var(--text-olive-gray);
  border: 1px solid var(--border-warm);
  box-shadow: var(--shadow-ring);
}
.btn-secondary:hover { background: var(--bg-parchment); }

.btn-danger {
  background: rgba(239,68,68,0.08);
  color: var(--color-reaction);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}
.btn-danger:hover { background: rgba(239,68,68,0.18); }

.btn-icon { min-width: unset; }

/* Toolbar */
.toolbar {
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-cream);
  flex-wrap: wrap;
}

/* Content area */
.content-area {
  display: flex;
  flex-direction: column;
  overflow: auto;
}

/* Item table */
.item-table-wrap {
  padding: 14px 16px;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-cream);
}
.table-empty {
  color: var(--text-stone-gray);
  font-size: 0.875rem;
  text-align: center;
  padding: 20px 0;
}
.item-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.item-table th {
  text-align: left;
  padding: 6px 10px;
  font-weight: 600;
  color: var(--text-stone-gray);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border-cream);
}
.item-table td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--border-cream);
  color: var(--text-near-black);
  vertical-align: middle;
}
.item-table tr:hover td { background: var(--bg-parchment); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-xl);
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-drug     { background: rgba(59,130,246,0.12);  color: var(--color-drug); }
.badge-reaction { background: rgba(239,68,68,0.12);   color: var(--color-reaction); }
.badge-lab      { background: rgba(139,92,246,0.12);  color: var(--color-lab); }

/* Canvas */
.canvas-wrap {
  overflow: auto;
  padding: 16px;
  flex: 1;
  background: var(--bg-parchment);
}
.timeline-canvas {
  display: block;
  max-width: 100%;
  border: 1px solid var(--border-warm);
  border-radius: var(--radius);
  box-shadow: var(--shadow-whisper);
  background: #fff;
}

/* Tools section */
.tools-section {
  padding: 14px 16px;
  background: var(--bg-ivory);
  border-top: 1px solid var(--border-cream);
}
.tools-title {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--text-olive-gray);
  margin-bottom: 10px;
}
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
}
.btn-tool {
  background: var(--bg-white);
  border: 1px solid var(--border-warm);
  border-radius: var(--radius-lg);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  box-shadow: var(--shadow-ring);
  transition: border-color 0.15s, box-shadow 0.15s;
  text-align: left;
}
.btn-tool:hover {
  border-color: var(--brand-terracotta);
  box-shadow: 0 0 0 2px rgba(201,100,66,0.1);
}
.tool-icon  { font-size: 1.1rem; }
.tool-label { font-size: 0.82rem; font-weight: 600; color: var(--text-near-black); }
.tool-desc  { font-size: 0.75rem; color: var(--text-stone-gray); }

/* Footer */
.app-footer {
  background: var(--bg-white);
  border-top: 1px solid var(--border-cream);
  padding: 10px 28px;
  text-align: center;
  color: var(--text-stone-gray);
  font-size: 0.8rem;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20,20,19,0.45);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
  animation: fadeIn 0.18s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal-box {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 80px rgba(0,0,0,0.18);
  width: 100%;
  max-width: 560px;
  max-height: 88vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: slideUp 0.2s ease;
}
.modal-box-wide { max-width: 760px; }
@keyframes slideUp { from { transform: translateY(12px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-cream);
  background: var(--bg-ivory);
}
.modal-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--text-near-black);
}
.modal-close {
  background: transparent;
  border: none;
  font-size: 1.1rem;
  color: var(--text-stone-gray);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: background 0.12s;
}
.modal-close:hover { background: var(--border-cream); }

.modal-body {
  padding: 18px 20px;
  overflow-y: auto;
  flex: 1;
}

/* Naranjo */
.naranjo-table { width: 100%; border-collapse: collapse; font-size: 0.83rem; }
.naranjo-table th {
  text-align: left;
  padding: 6px 8px;
  color: var(--text-stone-gray);
  font-size: 0.75rem;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-cream);
}
.naranjo-table td { padding: 7px 8px; border-bottom: 1px solid var(--border-cream); vertical-align: top; }
.nara-q { max-width: 320px; color: var(--text-near-black); line-height: 1.45; }
.nara-cell { text-align: center; }
.nara-btn {
  background: var(--bg-ivory);
  border: 1px solid var(--border-warm);
  border-radius: var(--radius-sm);
  padding: 3px 10px;
  font-size: 0.8rem;
  cursor: pointer;
  color: var(--text-olive-gray);
  transition: all 0.12s;
  font-weight: 500;
}
.nara-btn:hover { border-color: var(--brand-terracotta); color: var(--brand-terracotta); }
.nara-btn.active {
  background: var(--brand-terracotta);
  border-color: var(--brand-terracotta);
  color: #fff;
}

/* DRESS */
.dress-group { margin-bottom: 14px; }
.dress-q { font-size: 0.84rem; color: var(--text-near-black); margin-bottom: 6px; font-weight: 500; }
.dress-btn-group { display: flex; flex-wrap: wrap; gap: 6px; }
.dress-btn {
  background: var(--bg-ivory);
  border: 1px solid var(--border-warm);
  border-radius: var(--radius-sm);
  padding: 4px 12px;
  font-size: 0.8rem;
  cursor: pointer;
  color: var(--text-olive-gray);
  transition: all 0.12s;
}
.dress-btn:hover { border-color: var(--brand-terracotta); color: var(--brand-terracotta); }
.dress-btn.active {
  background: var(--brand-terracotta);
  border-color: var(--brand-terracotta);
  color: #fff;
}

/* BSA */
.bsa-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 14px; }
.bsa-col-title { font-family: var(--font-serif); font-size: 0.9rem; margin-bottom: 8px; color: var(--text-olive-gray); }
.bsa-part {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-near-black);
  cursor: pointer;
  padding: 3px 0;
  line-height: 1.35;
}
.bsa-part input[type="checkbox"] { accent-color: var(--brand-terracotta); width: 14px; height: 14px; flex-shrink: 0; }

/* Score result strip */
.score-result {
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--bg-ivory);
  border: 1px solid var(--border-cream);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.score-label { font-size: 0.85rem; color: var(--text-olive-gray); }
.score-value { font-size: 1.2rem; font-weight: 700; color: var(--brand-terracotta); font-family: var(--font-serif); }
.score-level { font-size: 0.88rem; color: var(--text-near-black); font-weight: 500; }

/* Update / changelog */
.update-body h3 { font-family: var(--font-serif); font-size: 0.95rem; margin: 14px 0 6px; color: var(--text-near-black); }
.update-body ul { padding-left: 18px; }
.update-body li { font-size: 0.85rem; color: var(--text-olive-gray); margin-bottom: 4px; }

/* Shake animation (validation) */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-6px); }
  40%       { transform: translateX(6px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}
.is-invalid {
  border-color: var(--color-reaction) !important;
  animation: shake 0.4s ease;
}

/* Responsive */
@media (max-width: 900px) {
  .app-main { grid-template-columns: 1fr; }
  .sidebar  { max-height: none; border-right: none; border-bottom: 1px solid var(--border-warm); }
  .bsa-columns { grid-template-columns: 1fr; }
}