/* ── AMBIENT GLOW ── */
.calc-ambient {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 0; overflow: hidden;
}
.calc-ambient::before {
  content: '';
  position: absolute; top: -20%; left: -5%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(255,0,127,0.05) 0%, transparent 70%);
  border-radius: 50%;
  animation: calcDrift1 18s ease-in-out infinite alternate;
}
.calc-ambient::after {
  content: '';
  position: absolute; bottom: -20%; right: -5%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,238,252,0.04) 0%, transparent 70%);
  border-radius: 50%;
  animation: calcDrift2 22s ease-in-out infinite alternate;
}
@keyframes calcDrift1 { from { transform: translate(0,0); } to { transform: translate(60px,40px); } }
@keyframes calcDrift2 { from { transform: translate(0,0); } to { transform: translate(-50px,-60px); } }

/* ── BODY & WRAPPER ── */
body {
  font-family: 'Space Grotesk', sans-serif;
  padding-top: 72px;
  min-height: 100vh;
}

.calc-wrap {
  width: 90%;
  max-width: 520px;
  margin: 2rem auto 4rem;
  position: relative;
  z-index: 1;
}

/* ── PAGE TITLE ── */
.page-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.03em;
  color: var(--on-surface, #f8f5fd);
  margin: 0 0 0.4rem;
}

.gradient-text {
  background: linear-gradient(90deg, #FF007F, #00eefc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px rgba(255,0,127,0.3));
}

.calc-description {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(248,245,253,0.4);
  margin: 0 0 1.75rem;
}

/* ── CALCULATOR CARD ── */
#calculator {
  background: rgba(37,37,44,0.5);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 1rem;
  padding: 1.75rem;
}

.calculator-content {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ── FIELDS ── */
.calc-field {
  margin-bottom: 1.1rem;
}

.calc-field label,
#calculator label {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(248,245,253,0.35);
  margin-bottom: 6px;
}

#calculator input {
  width: 100%;
  padding: 0.65rem 0.9rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 0.6rem;
  box-sizing: border-box;
  background: rgba(14,14,19,0.6);
  color: var(--on-surface, #f8f5fd);
  outline: none;
  transition: border-color 0.2s;
  margin: 0;
}
#calculator input:focus { border-color: rgba(255,0,127,0.45); }
#calculator input::placeholder { color: rgba(248,245,253,0.2); font-weight: 400; }

/* Remove number input spinners */
#calculator input[type=number]::-webkit-inner-spin-button,
#calculator input[type=number]::-webkit-outer-spin-button { opacity: 0.3; }

/* ── CALCULATE BUTTON ── */
#calculate-button {
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.75rem;
  background: linear-gradient(135deg, #FF007F, #cc0066);
  border: none;
  border-radius: 9999px;
  color: #fff;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 0 20px rgba(255,0,127,0.3);
  box-sizing: border-box;
}
#calculate-button:hover { transform: scale(1.02); box-shadow: 0 0 30px rgba(255,0,127,0.5); }
#calculate-button:active { transform: scale(0.98); }

/* ── OUTPUT ── */
#output {
  margin-top: 1.25rem;
  padding: 1rem 1.1rem;
  background: rgba(14,14,19,0.6);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 0.75rem;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(248,245,253,0.8);
  display: none;
}
#output:not(:empty) { display: block; }

/* ── FOCUS ACCESSIBILITY ── */
#calculator input:focus,
#calculate-button:focus {
  outline: 2px solid rgba(255,0,127,0.5);
  outline-offset: 2px;
}

/* ── PRINT ── */
@media print {
  #calculator, #calculator input, #calculate-button, #output {
    color: black !important;
    background: white !important;
    border-color: black !important;
  }
}