.fitness-age-calculator-section {
  margin-top: clamp(64px, 8vw, 112px);
}

.fitness-age-calculator-shell {
  position: relative;
  isolation: isolate;
  display: grid;
  gap: clamp(36px, 6vw, 80px);
  padding: clamp(32px, 6vw, 76px);
  overflow: hidden;
  color: #f8fffd;
  background:
    radial-gradient(circle at 8% 10%, rgba(83, 134, 228, 0.23), transparent 34%),
    radial-gradient(circle at 92% 88%, rgba(255, 45, 84, 0.2), transparent 36%),
    #071c1a;
  border-radius: 36px;
  box-shadow: 0 36px 90px rgba(0, 21, 20, 0.18);
}

.fitness-age-calculator-shell::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.4;
  background-image: linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 100% 52px;
  mask-image: linear-gradient(90deg, transparent, #000 30%, #000 70%, transparent);
}

.fitness-age-calculator-copy {
  align-self: center;
  max-width: 520px;
}

.fitness-age-calculator-copy h2 {
  max-width: 9ch;
  color: #f8fffd;
  font-size: clamp(2.7rem, 6vw, 5.2rem);
}

.fitness-age-calculator-copy > p:not(.fitness-age-calculator-eyebrow) {
  max-width: 45ch;
  margin-top: 22px;
  color: rgba(248, 255, 253, 0.76);
}

.fitness-age-calculator-eyebrow {
  margin-bottom: 18px;
  color: #ff90a6;
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.fitness-age-calculator-method {
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.fitness-age-calculator-form {
  align-self: start;
  padding: clamp(24px, 4vw, 38px);
  color: #001514;
  background: rgba(251, 255, 254, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 26px;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.22);
}

.fitness-age-calculator-fields {
  display: grid;
  gap: 22px;
}

.fitness-age-calculator-field label {
  display: block;
  margin-bottom: 9px;
  color: #001514;
  font-size: 0.92rem;
  font-weight: 750;
}

.fitness-age-calculator-field input,
.fitness-age-calculator-field select {
  width: 100%;
  min-height: 54px;
  padding: 13px 15px;
  color: #001514;
  background: #fff;
  border: 1px solid #ccd8d4;
  border-radius: 13px;
  font: inherit;
  font-size: 1rem;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.fitness-age-calculator-field input:focus,
.fitness-age-calculator-field select:focus {
  border-color: #ff2d54;
  box-shadow: 0 0 0 4px rgba(255, 45, 84, 0.14);
}

.fitness-age-calculator-field input[aria-invalid="true"],
.fitness-age-calculator-field select[aria-invalid="true"] {
  border-color: #b00020;
  box-shadow: 0 0 0 3px rgba(176, 0, 32, 0.1);
}

.fitness-age-calculator-field > p {
  margin-top: 8px;
  color: #68736f;
  font-size: 0.83rem;
  line-height: 1.45;
}

.fitness-age-calculator-field > p a {
  color: #334b76;
  font-weight: 700;
  text-underline-offset: 2px;
}

.fitness-age-calculator-input-unit {
  position: relative;
}

.fitness-age-calculator-input-unit input {
  padding-right: 100px;
}

.fitness-age-calculator-input-unit span {
  position: absolute;
  top: 50%;
  right: 14px;
  color: #68736f;
  font-size: 0.78rem;
  font-weight: 700;
  transform: translateY(-50%);
  pointer-events: none;
}

.fitness-age-calculator-error {
  margin-top: 18px;
  padding: 12px 14px;
  color: #750018;
  background: #fff0f3;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 650;
}

.fitness-age-calculator-submit {
  width: 100%;
  min-height: 54px;
  margin-top: 24px;
  padding: 14px 22px;
  color: #fff;
  background: #ff2d54;
  border: 0;
  border-radius: 999px;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
  box-shadow: 0 14px 30px rgba(255, 45, 84, 0.24);
  transition: background 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.fitness-age-calculator-submit:hover {
  background: #e01f47;
  transform: translateY(-1px);
  box-shadow: 0 18px 36px rgba(255, 45, 84, 0.3);
}

.fitness-age-calculator-submit:focus-visible,
.fitness-age-calculator-app-link:focus-visible,
.fitness-age-calculator-reset:focus-visible {
  outline: 3px solid #5386e4;
  outline-offset: 3px;
}

.fitness-age-calculator-privacy {
  margin-top: 12px;
  color: #68736f;
  font-size: 0.82rem;
  text-align: center;
}

.fitness-age-calculator-result {
  margin-top: 28px;
  padding-top: 26px;
  border-top: 1px solid #dfe7e4;
}

.fitness-age-calculator-result:focus {
  outline: 2px solid rgba(83, 134, 228, 0.58);
  outline-offset: 7px;
  border-radius: 10px;
}

.fitness-age-calculator-result[hidden],
.fitness-age-calculator-error[hidden] {
  display: none;
}

.fitness-age-calculator-result-label {
  color: #68736f;
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.fitness-age-calculator-result-number {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-top: 6px;
}

.fitness-age-calculator-result-number output {
  color: #001514;
  font-family: "Fraunces", ui-serif, "New York", "Charter", Cambria, Georgia, serif;
  font-size: clamp(4.7rem, 12vw, 7.2rem);
  font-variation-settings: "opsz" 144, "SOFT" 0;
  font-weight: 450;
  letter-spacing: -0.055em;
  line-height: 0.95;
}

.fitness-age-calculator-result-number span {
  color: #68736f;
  font-size: 0.9rem;
  font-weight: 700;
}

.fitness-age-calculator-result-comparison {
  margin-top: 18px;
  color: #001514;
  font-size: 1.1rem;
  font-weight: 700;
}

.fitness-age-calculator-result-detail {
  margin-top: 9px;
  color: #68736f;
  font-size: 0.9rem;
}

.fitness-age-calculator-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 24px;
}

.fitness-age-calculator-app-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 18px;
  color: #fff;
  background: #001514;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 750;
  text-decoration: none;
}

.fitness-age-calculator-reset {
  padding: 8px 0;
  color: #44504c;
  background: transparent;
  border: 0;
  border-bottom: 1px solid #9ba8a3;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
}

@media (min-width: 900px) {
  .fitness-age-calculator-shell {
    grid-template-columns: minmax(0, 0.92fr) minmax(430px, 1.08fr);
    align-items: center;
  }

  .fitness-age-calculator-fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .fitness-age-calculator-field--wide {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .fitness-age-calculator-shell {
    padding: 26px 18px 18px;
    border-radius: 26px;
  }

  .fitness-age-calculator-form {
    padding: 22px 18px;
    border-radius: 20px;
  }

  .fitness-age-calculator-actions,
  .fitness-age-calculator-app-link {
    width: 100%;
  }

  .fitness-age-calculator-reset {
    margin: 0 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fitness-age-calculator-field input,
  .fitness-age-calculator-field select,
  .fitness-age-calculator-submit {
    transition: none;
  }
}