/* ==== Global Reset ==== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #141e30, #243b55);
  color: #fff;
}

/* ==== Container ==== */
.container {
  background: #1f2937;
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
  width: 420px;
  max-width: 95%;
  text-align: center;
  transition: all 0.3s ease-in-out;
}

.container:hover {
  transform: translateY(-5px);
}

/* ==== Title ==== */
.container h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  background: linear-gradient(90deg, #00d2ff, #3a7bd5);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==== Input Amount ==== */
.amount {
  margin-bottom: 1.5rem;
  text-align: left;
}

.amount p {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #cbd5e1;
}

.amount input {
  width: 100%;
  padding: 0.8rem;
  border-radius: 12px;
  border: none;
  outline: none;
  font-size: 1rem;
  background: #334155;
  color: #fff;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.4);
  transition: 0.3s;
}

.amount input:focus {
  background: #475569;
  border: 1px solid #38bdf8;
}

/* ==== Dropdowns ==== */
.dropdown {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 1.5rem 0;
}

.dropdown i {
  font-size: 1.5rem;
  color: #38bdf8;
  margin: 0 1rem;
}

.select-box {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: #334155;
  padding: 0.6rem 1rem;
  border-radius: 12px;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.4);
}

.select-box img {
  width: 34px;
  height: 24px;
  border-radius: 5px;
}

.select-box select {
  background: transparent;
  border: none;
  outline: none;
  color: #f8fafc;
  font-size: 1rem;
  cursor: pointer;
}

/* ==== Conversion Message ==== */
.msg {
  margin: 1rem 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: #38bdf8;
}

/* ==== Button ==== */
button {
  background: linear-gradient(90deg, #3a7bd5, #00d2ff);
  color: #fff;
  border: none;
  padding: 0.9rem;
  width: 100%;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  transition: 0.3s;
  box-shadow: 0 6px 16px rgba(0, 210, 255, 0.3);
}

button:hover {
  background: linear-gradient(90deg, #00d2ff, #3a7bd5);
  transform: scale(1.03);
}