.page {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* ---------- başlık ---------- */

.form-head {
  padding-top: 44px;
  text-align: center;
}

.form-intro {
  margin: 18px 0 0;
  color: var(--ink-soft);
}

.form-date {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
}

/* ---------- numaralı alan satırları ---------- */

.fields {
  margin-top: 32px;
  border-top: 1px solid var(--line);
}

.field-row {
  display: grid;
  grid-template-columns: 40px 1fr;
  column-gap: 12px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.field-no {
  padding-top: 1px;
  color: var(--red);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.input-digits {
  letter-spacing: 0.03em;
}

/* ---------- gönder ---------- */

.form-foot {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.btn-submit {
  width: 100%;
  height: 58px;
  font-size: 1.0625rem;
}

/* ---------- başarı ---------- */

.success {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 44px;
  text-align: center;
}

.success:focus {
  outline: none;
}

.success-icon {
  width: 56px;
  height: 56px;
  color: var(--red);
  stroke-width: 1.75;
}

.success-title {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.2;
}

.success-text {
  max-width: 36ch;
  margin: 10px 0 0;
  color: var(--ink-soft);
}

.ref {
  display: grid;
  gap: 4px;
  margin: 28px 0 24px;
  padding: 16px 36px 18px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--red);
  border-radius: var(--radius);
}

.ref-label {
  color: var(--muted);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ref-no {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

/* ---------- mobil ---------- */

@media (max-width: 640px) {
  .page {
    padding: 0 20px 48px;
  }

  .form-head,
  .success {
    padding-top: 32px;
  }

  .field-row {
    grid-template-columns: auto 1fr;
    column-gap: 10px;
    align-items: baseline;
    padding: 18px 0 20px;
  }

  /* Numara etiketle aynı satırda kalsın, giriş kutusu tüm genişliği kullansın. */
  .field {
    display: contents;
  }

  .field > :not(.field-label) {
    grid-column: 1 / -1;
  }

  .ref {
    padding: 14px 28px 16px;
  }

  .ref-no {
    font-size: 2rem;
  }
}