body {
  font-family: Arial, sans-serif;
  background: #f4f7fb;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 30px;
}

h1 {
  text-align: center;
  color: #1e3a5f;
  margin-bottom: 10px;
}

.subtitle {
  text-align: center;
  color: #666;
  margin-bottom: 40px;
  font-size: 18px;
}

h2 {
  margin-top: 30px;
  color: #333;
}

/* BUTTONS */

button {
  padding: 14px 18px;
  margin: 8px;
  border: none;
  border-radius: 10px;
  background: #2563eb;
  color: white;
  cursor: pointer;
  font-size: 15px;
  transition: 0.2s;
}

button:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
}

/* PANELS */

.panel {
  display: none;
  margin-top: 20px;
  padding: 20px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.hidden {
  display: none;
}

/* BODY LAYOUT */

.body-layout {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  align-items: flex-start;
  margin-top: 20px;
}

/* HUMAN IMAGE */

.image-wrapper {
  position: relative;
  width: 300px;
  margin: auto;
}

.human-body {
  width: 100%;
  display: block;
}

/* HOTSPOTS */

.hotspot {
  position: absolute;
  cursor: pointer;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0);
  transition: 0.2s;
}

.hotspot:hover {
  background: rgba(37, 99, 235, 0.25);
}

/* HOTSPOT POSITIONS */

.neck {
  top: 6%;
  left: 40%;
  width: 20%;
  height: 8%;
}

.shoulder {
  top: 14%;
  left: 20%;
  width: 60%;
  height: 10%;
}

.elbow {
  top: 28%;
  left: 6%;
  width: 22%;
  height: 10%;
}

.wrist {
  top: 40%;
  left: 0%;
  width: 18%;
  height: 8%;
}

.back {
  top: 24%;
  left: 30%;
  width: 40%;
  height: 18%;
}

.waist {
  top: 42%;
  left: 30%;
  width: 40%;
  height: 10%;
}

.hip {
  top: 52%;
  left: 28%;
  width: 45%;
  height: 10%;
}

.knee {
  top: 66%;
  left: 30%;
  width: 40%;
  height: 12%;
}

.ankle {
  top: 80%;
  left: 35%;
  width: 30%;
  height: 8%;
}

.foot {
  top: 89%;
  left: 30%;
  width: 40%;
  height: 8%;
}

/* BODY PART BUTTONS */

#body-parts {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

#body-parts button {
  min-width: 140px;
}

/* DISEASE LIST */

#disease-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

#disease-list button {
  background: #0f766e;
}

#disease-list button:hover {
  background: #115e59;
}

/* EXERCISES */

#exercise-section {
  margin-top: 40px;
}

#exercise-cards {
  display: grid;
  grid-template-columns:
    repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.exercise-card {
  background: white;
  padding: 20px;
  border-radius: 16px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}

.exercise-card h3 {
  color: #2563eb;
}

.exercise-card p {
  color: #555;
  line-height: 1.5;
}

/* PATIENT LIST */

#patientList {
  margin-top: 20px;
}

#patientList div {
  background: #f1f5f9;
  padding: 15px;
  border-radius: 10px;
  margin-bottom: 10px;
}