body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f7f9;
}
.container {
  display: flex;
}
.sidebar {
  width: 240px;
  background: linear-gradient(to bottom right, #89d8d3, #03c8a8);
  color: white;
  padding: 20px;
}
.logo {
  width: 100%;
  margin-bottom: 20px;
}
.sidebar ul {
  list-style: none;
  padding-left: 0;
}
.sidebar li {
  margin: 15px 0;
}
.sidebar a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}
.sidebar a:hover {
  text-decoration: underline;
}
.main-content {
  flex-grow: 1;
  padding: 30px;
}
h1 {
  margin-top: 0;
}
.tabs {
  margin-bottom: 20px;
}
.tablink {
  background-color: #e0f0ef;
  border: none;
  padding: 10px 20px;
  margin-right: 5px;
  cursor: pointer;
  font-weight: bold;
}
.tablink:hover {
  background-color: #bde4e0;
}
.tabcontent {
  display: none;
  padding: 20px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 0 6px rgba(0,0,0,0.1);
}
table {
  width: 100%;
  border-collapse: collapse;
}
table, th, td {
  border: 1px solid #ccc;
}
th, td {
  padding: 8px;
  text-align: left;
}
button {
  background: #03c8a8;
  color: white;
  border: none;
  padding: 8px 14px;
  border-radius: 5px;
  cursor: pointer;
}
button:hover {
  background: #029b85;
}
ul {
  list-style: disc;
  padding-left: 20px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}


.readable-tabs .tablink {
  font-size: 16px;
  color: #333;
}

.musteri-header h2 {
  margin: 0 0 5px;
  font-size: 20px;
}

.musteri-header p {
  margin: 0 0 15px;
  color: #555;
}
/* Excel export button */
.excel-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #1D6F42;
  color: #fff;
  border: none;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(0,0,0,0.12);
}
.excel-btn:hover {
  background: #145A32;
}
.excel-icon {
  width: 20px;
  height: 20px;
  display: inline-block;
  line-height: 0;
}
.excel-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Ölçüm formunu iyileştirme */
.measure-card {
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  padding: 16px;
  margin-bottom: 16px;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 16px;
}
@media (min-width: 900px) {
  .form-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.field label {
  display: block;
  font-size: 12px;
  color: #444;
  margin-bottom: 6px;
}
.field input[type="number"],
.field input[type="date"],
.field input[type="text"] {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border: 1px solid #d9e1e8;
  border-radius: 8px;
  outline: none;
}
.field input:focus {
  border-color: #03c8a8;
  box-shadow: 0 0 0 3px rgba(3,200,168,0.15);
}
.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}
button.secondary {
  background: #e9eef2;
  color: #333;
}
button.secondary:hover { background: #d8e3ea; }
button.ghost {
  background: transparent;
  color: #03c8a8;
  border: 1px solid #03c8a8;
}
button.ghost:hover { background: rgba(3,200,168,0.08); }