/* Theme Colors */
:root {
  --underweight: #ffb347;
  --normal: #4caf50;
  --overweight: #ff7f7f;
  --obese: #ff3b3b;

  --primary: #8a2be2;
  --secondary: #4facfe;
}

/* Center Layout */
.container {
  margin: 40px auto;
  width: min(480px, 92%);
  padding: 25px;

  /* Glass Theme */
  background: rgba(20, 20, 35, 0.65);
  backdrop-filter: blur(12px);

  border-radius: 18px;

  /* Gradient Border */
  border: 1px solid rgba(138, 43, 226, 0.4);

  /* Glow Effect */
  box-shadow:
    0 0 25px rgba(138, 43, 226, 0.25),
    0 0 10px rgba(79, 172, 254, 0.2),
    inset 0 0 10px rgba(255,255,255,0.05);

  display: grid;
  gap: 1.2rem;
}

/* Heading */
h1 {
  text-align: center;
  color: #fff;
  font-size: 1.8rem;
}

/* Calculator Layout */
.calculator {
  display: flex;
  flex-direction: column;
}

.calculator > *:not(:last-child) {
  margin-bottom: 1rem;
}

.calculator div {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Labels */
.calculator label {
  flex: 0 0 120px;
  font-weight: 600;
  color: #ccc;
}

/* Inputs */
.calculator input {
  width: 100%;
  border-radius: 10px;
  padding: 12px;
  border: 1px solid rgba(255,255,255,0.1);

  background: rgba(255,255,255,0.05);
  color: #fff;

  font-size: 1.2rem;
  text-align: center;

  outline: none;
  transition: 0.2s;
}

.calculator input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 10px rgba(138, 43, 226, 0.4);
}

/* Buttons */
.calculator button {
  width: 50%;
  border-radius: 10px;
  border: none;
  cursor: pointer;

  padding: 12px;

  font-size: 0.9rem;
  font-weight: 600;

  text-transform: uppercase;
  letter-spacing: 1px;

  transition: 0.25s ease;

  color: #fff;

  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 0 10px rgba(138, 43, 226, 0.5);
}

/* Reset Button */
.calculator button[type="reset"] {
  background: #444;
  box-shadow: none;
}

/* Hover */
.calculator button:hover {
  transform: scale(1.05);
  filter: brightness(110%);
}

/* Output */
.output {
  text-align: center;
  color: #fff;
}

.output #bmi {
  font-size: 3.5rem;
  font-weight: bold;
}

.output #desc strong {
  text-transform: uppercase;
}

/* BMI Scale */
.bmi-scale {
  display: flex;
  border-radius: 10px;
  overflow: hidden;
}

.bmi-scale div {
  flex: 1;
  text-align: center;
  text-transform: uppercase;

  padding: 12px;

  background: rgba(255,255,255,0.03);
  border-top: 4px solid var(--color);
}

.bmi-scale h4 {
  font-size: 0.75rem;
  color: #aaa;
}

.bmi-scale p {
  color: #fff;
}

/* Status Colors */
.underweight { color: var(--underweight); }
.healthy { color: var(--normal); }
.overweight { color: var(--overweight); }
.obese { color: var(--obese); }

/* Responsive */
@media (max-width: 480px) {
  .container {
    padding: 18px;
  }

  h1 {
    font-size: 1.5rem;
  }

  .calculator div {
    flex-direction: column;
    align-items: stretch;
  }

  .calculator label {
    flex: unset;
  }

  .calculator button {
    width: 100%;
  }

  .output #bmi {
    font-size: 2.5rem;
  }

  .bmi-scale {
    flex-direction: column;
  }

  .bmi-scale div {
    display: flex;
    justify-content: space-between;
    align-items: center;

    border-top: none;
    border-left: 5px solid var(--color);

    padding: 8px 12px;
  }

  .bmi-scale h4 {
    text-align: left;
  }
}

/* DATE INPUT CONTAINER */
div > label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: #1e1e2f; /* dark text from theme */
  margin-bottom: 6px;
  font-family: Arial, sans-serif; /* safe font */
}

/* DATE INPUTS */
#dob, #calcDate {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  border: 1px solid #ccc; /* subtle border */
  background-color: #f5f7ff; /* light background */
  font-size: 1rem;
  color: #1e1e2f;
  outline: 2px solid transparent;
  transition: all 0.2s ease;
}

/* FOCUS STATE */
#dob, #calcDate:focus {
  outline: 2px solid #675AFE; /* primary color focus */
  border-color: #675AFE;
}

.calculateat {
  margin-top: 1.2rem; /* spacing between two date fields */
}



/* sip calculator */
/* Currency Select Styling */
#currency {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 14px;
  backdrop-filter: blur(10px);
  outline: none;
  transition: all 0.3s ease;
}

/* Hover + Focus */
#currency:focus,
#currency:hover {
  border-color: #6C63FF;
  box-shadow: 0 0 0 2px rgba(108, 99, 255, 0.3);
}

/* Dropdown options */
#currency option {
  background: #1a1a2e;
  color: #fff;
}
/* sip calculator */


/* Extra Small */
@media (max-width: 360px) {
  .output #bmi {
    font-size: 2rem;
  }

  .calculator input {
    font-size: 1rem;
  }
}