* { box-sizing: border-box; }

body {
  margin:0;
  font-family: 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top, #00002a, #020203);
  color: white;
  display:flex;
  justify-content:center;
  align-items:center;
  height:100vh;
}

/* CONTAINER */
.container {
  width: 95%;
  max-width: 420px;
  padding: 25px;
  border-radius: 20px;
  background: rgba(0, 0, 0, 0.455);
  backdrop-filter: blur(25px);

}

/* INPUT + SELECT */
input, select {
  width:100%;
  padding:12px;
  margin:6px 0;
  border-radius:10px;
  border:none;
  background: rgba(255,255,255,0.06);
  color:white;
  outline:none;
  font-size:14px;
}

/* SELECT FIX (asıl çözüm burada) */
select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, #aaa 50%),
                    linear-gradient(135deg, #aaa 50%, transparent 50%);
  background-position: calc(100% - 15px) calc(50% - 3px),
                       calc(100% - 10px) calc(50% - 3px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  cursor: pointer;
}

/* OPTION RENK FIX */
select option {
  background: #0b0b0f;
  color: white;
}

/* BUTTON */
button {
  width:100%;
  padding:12px;
  margin-top:10px;
  border:none;
  border-radius:10px;
  background: linear-gradient(135deg, #7f1d1d, #dc2626);
  color:white;
  font-weight:bold;
  cursor:pointer;
  transition:0.3s;
}

button:hover {
  transform: scale(1.04);
}

/* RESULT */
.result {
  margin-top:15px;
  font-size:14px;
}

/* BAR */
.bar {
  margin-top:25px;
  height:40px;
  border-radius:20px;
  background: rgba(255,255,255,0.05);
  position:relative;
  overflow:hidden;
}

.zone {
  position:absolute;
  height:100%;
  background: linear-gradient(90deg,#16a34a,#4ade80);
  border-radius:20px;
  transition: all 0.7s ease;
}

.marker {
  position:absolute;
  top:-5px;
  width:4px;
  height:50px;
  background:white;
}

.bad {
  background: linear-gradient(90deg,#7f1d1d,#dc2626) !important;
}

.label {
  text-align:center;
  margin-top:10px;
  font-size:13px;
}