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

body {
  font-family: 'Afacad', sans-serif;
  line-height: 1.7;
  color: #333;
  background-color: #fff;
  padding: 2rem;
}

.container {
  max-width: 900px;
  margin: 0 auto;
}

.logo {
  width: 100px;
  height: 100px;
  margin-bottom: 1rem;
  display: block;
}

h1 {
  font-family: 'Spectral', serif;
  font-size: 3rem;
  color: #D5756D;
  margin-bottom: 0.5rem;
}

h2 {
  font-family: 'Spectral', serif;
  font-size: 1.8rem;
  color: #D5756D;
  margin: 2.5rem 0 1rem;
}

h3 {
  font-family: 'Spectral', serif;
  font-size: 1.3rem;
  color: #1e3a5f;
  margin: 1.5rem 0 0.5rem;
}

h4 {
  font-family: 'Spectral', serif;
  font-size: 1.1rem;
  color: #1e3a5f;
  margin: 1.2rem 0 0.5rem;
  font-weight: 600;
}

a {
  color: #D5756D;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

p {
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

.hypothesis-statement {
  font-size: 1.2rem;
  font-weight: 600;
  color: #333;
  margin-top: 1.5rem;
}

ul {
  margin: 1rem 0 1rem 2rem;
}

ol {
  margin: 1rem 0 1rem 2rem;
}

li {
  margin-bottom: 0.5rem;
}

.team-members {
  margin: 0.5rem 0;
}

.heuristic-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background-color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  overflow: hidden;
}

.heuristic-table thead {
  background-color: #D5756D;
  color: white;
}

.heuristic-table th {
  padding: 1rem;
  text-align: left;
  font-family: 'Spectral', serif;
  font-weight: 600;
  font-size: 1.05rem;
}

.heuristic-table td {
  padding: 1rem;
  border-bottom: 1px solid #f0f0f0;
  vertical-align: top;
}

.heuristic-table tbody tr:last-child td {
  border-bottom: none;
}

.user-flow-image {
  width: 100%;
  height: auto;
  border: 1px solid #FBACA4;
  border-radius: 4px;
  margin: 1rem 0;
  display: block;
}

.prototype-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin: 1rem 0;
}

.prototype-image {
  width: 100%;
  max-width: 350px;
  height: auto;
  border: 1px solid #FFC49C;
  border-radius: 4px;
  object-fit: contain;
  justify-self: center;
}

hr {
  border: none;
  border-top: 1px solid #FBACA4;
  margin: 2rem 0;
}

/* Heuristics table styles */
.heuristic-table-wrapper {
  overflow-x: auto;
  margin: 1rem 0 2rem;
  border-radius: 8px;
  box-shadow: 0 6px 18px rgba(30,58,95,0.06);
  border: 1px solid #E6BDB6;
  background: #fff;
}

.heuristic-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 700px; /* allows horizontal scroll on small screens */
  background: #fff;
}

.heuristic-table thead th {
  text-align: left;
  padding: 0.9rem 1rem;
  background: #D5756D;
  color: #ffffff;
  font-weight: 700;
  font-family: 'Spectral', serif;
  border-bottom: 2px solid rgba(215,117,109,0.12);
  font-size: 0.95rem;
  /* make header stick to the top when scrolling horizontally/vertically */
  position: sticky;
  top: 0;
  z-index: 2;
  /* stronger vertical separators */
  border-right: 1px solid rgba(255,255,255,0.2);
}

.heuristic-table thead th:first-child {
  border-right: 1px solid #F3D7D1;
}

.heuristic-table tbody td {
  padding: 0.9rem 1rem;
  vertical-align: top;
  font-size: 0.98rem;
  color: #2b3b4a;
  border-bottom: 1px solid #F3D7D1; /* clearer row separator */
  border-right: 1px solid #F9EAE6; /* column separators */
}

/* remove right border on last column cells to keep clean outer edge */
.heuristic-table tbody td:last-child,
.heuristic-table thead th:last-child {
  border-right: none;
  text-align: center;
}

.heuristic-table tbody tr:nth-child(even) {
  background: linear-gradient(90deg, rgba(255,244,241,0.7), rgba(255,250,249,0.5));
}


/* emphasize first column with a subtle background to help scanning */
.heuristic-table td:first-child {
  font-weight: 700;
  color: #1e3a5f;
  width: 140px;
  background: rgba(213,117,109,0.03);
}

/* small visual polish */
.heuristic-table thead th {
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.heuristic-table td {
  word-break: break-word;
}

/* Severity badges */
.severity {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.85rem;
  color: #fff;
  letter-spacing: 0.01em;
}

.severity.major { background: #D75A4C; }
.severity.minor { background: #F2A86B; color: #2b2b2b; }
.severity.medium { background: #F6C27A; color: #2b2b2b; }
.severity.critical { background: #B33A2E; }

/* Make hypothesis statements bolder and add spacing between sections */
.hypothesis-statement,
.hypothesis-statement * {
  font-family: 'Spectral', serif;
}
.hypothesis-statement {
  font-style: normal;
  color: #1e3a5f;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.6;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

/* Remove top margin from first hypothesis to keep clean spacing after h3 */
.hypothesis-statement:first-of-type {
  margin-top: 1rem;
}

/* Download button next to repository link */
.download-button {
  display: inline-block;
  margin-left: 1rem;
  padding: 0.5rem 0.9rem;
  background-color: #D5756D;
  color: #fff;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
  font-size: 0.95rem;
  border: 2px solid rgba(0,0,0,0.03);
  transition: background-color 0.15s ease, transform 0.08s ease;
}

.download-button:hover,
.download-button:focus {
  background-color: #bf574c;
  transform: translateY(-1px);
}

@media (max-width: 480px) {
  .download-button { margin-left: 0.5rem; padding: 0.45rem 0.7rem; font-size: 0.9rem; }
}

/* ERD Diagram Container */
.diagram-container {
  border: 1px solid #FBACA4;
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(213, 117, 109, 0.1);
  margin: 1.5rem 0;
  background-color: #fffaf9;
  overflow-x: auto;
}

.diagram-container .mermaid {
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 600px;
}

/* Responsive tweaks */
@media (max-width: 720px) {
  body { padding: 1rem; }
  h1 { font-size: 2.25rem; }
  .heuristic-table { min-width: 600px; }
  .prototype-image { max-width: 100%; }
}

/* Charts for User Test Results */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.chart-image {
  width: 100%;
  max-width: 500px;
  height: auto;
  border: 1px solid #FBACA4;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(213, 117, 109, 0.1);
  object-fit: contain;
  justify-self: center;
}

.bar-chart {
  max-width: 600px;
  height: 400px;
  object-fit: contain;
}

.box-plot {
  max-width: 400px;
  height: 400px;
  object-fit: contain;
}

.full-width-chart {
  width: 100%;
  max-width: 800px;
  height: auto;
  border: 1px solid #FBACA4;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(213, 117, 109, 0.1);
  margin: 1.5rem 0;
  display: block;
}

@media (max-width: 480px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
}