/* Mobile refinements layered on top of the desktop-first visual system. */

@media (max-width: 580px) {
  html,
  body {
    width: 100%;
    max-width: 100%;
    overflow-x: clip;
  }

  body {
    line-height: 1.52;
  }

  /* Keep decorative layers and layout children from enlarging the scroll area. */
  body::before,
  body::after,
  main,
  .topbar,
  .section-shell {
    max-width: 100%;
  }

  body::after {
    right: -7rem;
    width: 22rem;
    height: 22rem;
  }

  .hero,
  .hero-copy,
  .hero-card,
  .metrics-grid,
  .diagnostic-card,
  .diagnostic-frame,
  .demo-layout,
  .prediction-form,
  .field-grid,
  .form-field,
  .result-panel,
  .limits-grid,
  .flow,
  .footer {
    min-width: 0;
    max-width: 100%;
  }

  .section-shell {
    width: calc(100% - 20px);
  }

  .topbar {
    width: 100%;
    padding: 11px 10px;
  }

  .brand {
    min-width: 0;
    max-width: 100%;
    gap: 9px;
    font-size: 0.86rem;
  }

  .brand > span:last-child {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .hero {
    gap: 28px;
    padding-block: 48px 44px;
  }

  .hero-copy {
    min-width: 0;
  }

  h1 {
    max-width: 100%;
    margin-bottom: 20px;
    font-size: clamp(2.15rem, 11vw, 3.2rem);
    line-height: 1.01;
    letter-spacing: -0.048em;
    overflow-wrap: anywhere;
  }

  h2 {
    max-width: 100%;
    font-size: clamp(1.8rem, 9vw, 2.55rem);
    line-height: 1.08;
    overflow-wrap: anywhere;
  }

  .lead {
    max-width: 100%;
    font-size: 1rem;
    overflow-wrap: anywhere;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    width: 100%;
    max-width: 100%;
    margin-top: 26px;
  }

  .hero-actions .button {
    width: 100%;
    max-width: 100%;
    white-space: normal;
    text-align: center;
  }

  .api-state {
    display: flex;
    width: 100%;
    max-width: 100%;
    align-items: flex-start;
    border-radius: 14px;
    line-height: 1.35;
    overflow-wrap: anywhere;
  }

  .api-state .status-dot {
    flex: 0 0 auto;
    margin-top: 0.3em;
  }

  .hero-card,
  .prediction-form,
  .result-panel {
    width: 100%;
    border-radius: 18px;
    padding: 18px;
  }

  .hero-card-head {
    min-width: 0;
    align-items: flex-start;
  }

  .hero-card dl div,
  .result-meta div {
    min-width: 0;
  }

  .hero-card dd,
  .result-meta dd {
    min-width: 0;
    overflow-wrap: anywhere;
  }

  .live-pill {
    flex: 0 0 auto;
    white-space: nowrap;
    font-size: 0.72rem;
  }

  .section {
    padding-block: 48px;
  }

  .metrics-grid,
  .field-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .metric,
  .limits-grid article {
    min-width: 0;
    min-height: 0;
  }

  .diagnostic-card {
    grid-template-columns: minmax(0, 1fr);
  }

  .diagnostic-frame,
  .diagnostic-frame img {
    width: 100%;
  }

  .form-toolbar {
    min-width: 0;
    gap: 10px;
  }

  .form-toolbar > * {
    min-width: 0;
    max-width: 100%;
  }

  .text-button {
    max-width: 100%;
    align-self: flex-start;
    white-space: normal;
  }

  .form-field input,
  .form-field select {
    min-width: 0;
    max-width: 100%;
  }

  .advanced-fields {
    min-width: 0;
    max-width: 100%;
    margin-block: 20px;
  }

  .advanced-fields summary {
    overflow-wrap: anywhere;
  }

  .result-panel {
    min-height: 300px;
  }

  .estimated-price {
    max-width: 100%;
    margin-bottom: 24px;
    font-size: clamp(2rem, 10vw, 3rem);
    overflow-wrap: anywhere;
  }

  .result-meta dd {
    max-width: 58%;
    font-size: 0.8rem;
  }

  .diagnostic-card {
    gap: 20px;
  }

  .flow {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .flow div {
    min-width: 0;
    max-width: 100%;
    padding: 17px 12px;
    overflow-wrap: anywhere;
  }

  .footer {
    width: calc(100% - 20px);
    min-height: 96px;
    padding-block: 20px;
  }

  .footer div {
    max-width: 100%;
    flex-wrap: wrap;
  }
}

@media (max-width: 380px) {
  .section-shell,
  .footer {
    width: calc(100% - 16px);
  }

  .brand {
    font-size: 0.8rem;
  }

  .brand-mark {
    flex: 0 0 auto;
  }

  h1 {
    font-size: clamp(2rem, 10.5vw, 2.7rem);
  }

  .hero-card-head {
    flex-direction: column;
  }

  .button {
    min-height: 46px;
    padding-inline: 14px;
  }

  .hero-card,
  .prediction-form,
  .result-panel {
    padding: 16px;
  }

  .result-meta div {
    align-items: flex-start;
  }

  .result-meta dd {
    max-width: 54%;
  }
}