/* ============================================================
   AURIS NEXUS — ROI CALCULATOR
   ============================================================ */

.roi-calculator {
  width: min(1120px, calc(100% - 32px));
  margin: 80px auto;
  position: relative;
  isolation: isolate;
}

.roi-calculator::before {
  content: "";
  position: absolute;
  inset: -80px -100px;
  z-index: -1;
  background:
    radial-gradient(
      circle at 20% 20%,
      rgba(60, 160, 255, 0.12),
      transparent 38%
    ),
    radial-gradient(
      circle at 80% 80%,
      rgba(120, 80, 255, 0.10),
      transparent 40%
    );
  pointer-events: none;
}

.roi-card {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 28px;
  background:
    linear-gradient(
      145deg,
      rgba(18, 25, 48, 0.96),
      rgba(7, 11, 26, 0.98)
    );
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.roi-header {
  padding: 48px 48px 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.roi-eyebrow {
  margin: 0 0 12px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0.7;
}

.roi-header h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.roi-header p {
  max-width: 700px;
  margin: 18px 0 0;
  line-height: 1.7;
  opacity: 0.75;
}

.roi-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  gap: 0;
}

.roi-form {
  padding: 42px 48px;
}

.roi-field {
  margin-bottom: 24px;
}

.roi-field label {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 9px;
  font-size: 0.9rem;
  font-weight: 700;
}

.roi-field input {
  width: 100%;
  box-sizing: border-box;
  min-height: 52px;
  padding: 13px 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  outline: none;
  background: rgba(255, 255, 255, 0.045);
  color: inherit;
  font: inherit;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

.roi-field input:focus {
  border-color: rgba(110, 190, 255, 0.7);
  background: rgba(255, 255, 255, 0.07);
  box-shadow:
    0 0 0 4px rgba(80, 160, 255, 0.10);
}

.roi-range-wrap {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: center;
}

.roi-range-wrap input[type="range"] {
  min-height: auto;
  padding: 0;
  accent-color: currentColor;
  background: transparent;
  box-shadow: none;
}

.roi-range-value {
  min-width: 52px;
  font-weight: 800;
  text-align: right;
}

.roi-helper {
  margin: 7px 0 0;
  font-size: 0.78rem;
  line-height: 1.5;
  opacity: 0.55;
}

.roi-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.roi-button {
  min-height: 52px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    opacity 180ms ease;
}

.roi-button:hover {
  transform: translateY(-2px);
}

.roi-button-primary {
  background: linear-gradient(
    135deg,
    #ffffff,
    #dcecff
  );
  color: #07101f;
  box-shadow:
    0 12px 30px rgba(100, 180, 255, 0.16);
}

.roi-button-secondary {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: inherit;
}

.roi-error {
  margin-top: 18px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 100, 100, 0.25);
  border-radius: 10px;
  background: rgba(255, 80, 80, 0.08);
  font-size: 0.85rem;
}

.roi-results {
  padding: 42px;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.035),
      rgba(255, 255, 255, 0.01)
    );
}

.roi-results h3 {
  margin: 0;
  font-size: 1.25rem;
}

.roi-results-intro {
  margin: 10px 0 26px;
  line-height: 1.6;
  font-size: 0.88rem;
  opacity: 0.65;
}

.roi-result-primary {
  margin-bottom: 24px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.035);
}

.roi-result-primary span {
  display: block;
  margin-bottom: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.55;
}

.roi-result-primary strong {
  display: block;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.roi-result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.roi-result {
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.025);
}

.roi-result span {
  display: block;
  margin-bottom: 7px;
  font-size: 0.72rem;
  line-height: 1.4;
  opacity: 0.55;
}

.roi-result strong {
  font-size: 1.15rem;
}

.roi-disclaimer {
  margin: 24px 0 0;
  font-size: 0.72rem;
  line-height: 1.6;
  opacity: 0.45;
}

.roi-results-cta {
  display: block;
  margin-top: 24px;
  text-align: center;
  text-decoration: none;
}

.roi-results--animate {
  animation: roiResultsIn 420ms ease both;
}

@keyframes roiResultsIn {
  from {
    opacity: 0;
    transform: translateY(14px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 820px) {
  .roi-body {
    grid-template-columns: 1fr;
  }

  .roi-results {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    border-left: 0;
  }
}

@media (max-width: 600px) {
  .roi-calculator {
    width: min(100% - 20px, 1120px);
    margin: 50px auto;
  }

  .roi-header,
  .roi-form,
  .roi-results {
    padding: 28px 22px;
  }

  .roi-result-grid {
    grid-template-columns: 1fr;
  }

  .roi-actions {
    flex-direction: column;
  }

  .roi-button {
    width: 100%;
  }
}