html {
  overflow-x: hidden;
}

.aluminum-page {
  --aluminum-amber: #d97706;
  --aluminum-amber-dark: #92400e;
  --aluminum-ink: #111827;
  --aluminum-muted: #4b5563;
  --aluminum-line: rgba(146, 64, 14, 0.2);
  --aluminum-line-strong: rgba(217, 119, 6, 0.42);
  --aluminum-soft: rgba(251, 191, 36, 0.14);
  --aluminum-panel: rgba(255, 255, 255, 0.78);
  --aluminum-panel-strong: rgba(255, 251, 235, 0.88);
  --aluminum-green: #15803d;
  --aluminum-red: #dc2626;
  --aluminum-svg: #1f2937;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 12% 0%, rgba(251, 191, 36, 0.2), transparent 28%),
    linear-gradient(180deg, rgba(255, 251, 235, 0.72), rgba(255, 255, 255, 0) 420px);
}

:root[data-theme="dark"] .aluminum-page {
  --aluminum-ink: #f9fafb;
  --aluminum-muted: #d1d5db;
  --aluminum-line: rgba(251, 191, 36, 0.18);
  --aluminum-line-strong: rgba(251, 191, 36, 0.46);
  --aluminum-soft: rgba(217, 119, 6, 0.18);
  --aluminum-panel: rgba(17, 24, 39, 0.78);
  --aluminum-panel-strong: rgba(31, 41, 55, 0.86);
  --aluminum-svg: #f9fafb;
}

.aluminum-page .site-header {
  border-bottom-color: var(--aluminum-line);
}

.aluminum-hero {
  padding: 3.25rem 0 2rem;
}

.aluminum-hero-grid,
.aluminum-calculator-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: minmax(0, 1fr) minmax(380px, 0.92fr);
  align-items: start;
}

.aluminum-hero-grid > *,
.aluminum-calculator-grid > * {
  min-width: 0;
}

.aluminum-hero h1 {
  margin: 0.55rem 0 0.35rem;
  text-wrap: balance;
}

.aluminum-eyebrow {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 0.42rem 0.78rem;
  border: 1px solid var(--aluminum-line);
  border-radius: 999px;
  color: var(--aluminum-amber-dark);
  background: var(--aluminum-soft);
  font-weight: 900;
}

:root[data-theme="dark"] .aluminum-eyebrow {
  color: #fcd34d;
}

.aluminum-subtitle {
  max-width: 820px;
  margin: 0;
  color: var(--text-soft);
  font-size: 1.08rem;
}

.aluminum-alert {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem;
  max-width: 880px;
  margin: 1.2rem 0;
  padding: 1rem;
  border-left: 4px solid #f59e0b;
  border-radius: 0 14px 14px 0;
  background: #fffbeb;
  color: #451a03;
}

:root[data-theme="dark"] .aluminum-alert {
  background: rgba(69, 26, 3, 0.48);
  color: #fef3c7;
}

.aluminum-alert strong {
  display: block;
  margin-bottom: 0.3rem;
  font-family: var(--font-heading);
}

.aluminum-hero-list {
  display: grid;
  gap: 0.35rem;
  margin: 1.1rem 0;
  padding: 0;
  color: var(--text-soft);
  list-style: none;
}

.aluminum-hero-list li::before {
  content: "✓";
  margin-right: 0.5rem;
  color: var(--aluminum-green);
  font-weight: 900;
}

.aluminum-style-showcase,
.aluminum-tool-panel,
.aluminum-results-panel,
.aluminum-info-card,
.aluminum-related-card {
  border: 1px solid var(--aluminum-line);
  background: var(--aluminum-panel);
  box-shadow: var(--shadow-soft);
}

.aluminum-style-showcase,
.aluminum-tool-panel,
.aluminum-results-panel {
  border-radius: 20px;
  padding: 1rem;
}

.style-showcase-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.9rem;
  color: var(--text);
}

.style-showcase-head span {
  color: var(--text-soft);
  font-size: 0.9rem;
}

.style-tile-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.style-tile {
  display: grid;
  gap: 0.45rem;
  width: 100%;
  min-height: 150px;
  border: 1px solid var(--aluminum-line);
  border-radius: 16px;
  padding: 0.7rem;
  background: rgba(255, 255, 255, 0.42);
  color: var(--text);
  font-weight: 900;
  text-align: left;
}

:root[data-theme="dark"] .style-tile {
  background: rgba(255, 255, 255, 0.04);
}

.style-tile:hover,
.style-tile.is-active {
  border-color: var(--aluminum-line-strong);
  background: var(--aluminum-soft);
}

.style-tile svg {
  width: 100%;
  height: auto;
  color: var(--aluminum-svg);
}

.style-tile .ground,
.style-tile .rails,
.style-tile .pickets,
.style-tile .tips,
.style-tile .panel-lines,
.style-tile .posts,
.style-tile .code-line {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 5;
}

.style-tile .tips,
.style-tile .code-line {
  stroke-width: 3;
}

.style-tile .privacy-panel {
  fill: rgba(217, 119, 6, 0.16);
  stroke: currentColor;
  stroke-width: 4;
}

.aluminum-calculator-title {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1rem;
}

.aluminum-calculator-title h2,
.aluminum-results-panel h3,
.aluminum-info-card h3,
.aluminum-related-card h3 {
  margin: 0;
  font-family: var(--font-heading);
  letter-spacing: -0.03em;
}

.aluminum-mode-switch,
.aluminum-preview-tabs,
.aluminum-step-actions,
.aluminum-result-actions,
.style-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.aluminum-mode-switch button,
.aluminum-preview-tabs button,
.aluminum-step-actions button,
.aluminum-result-actions button,
.style-switcher button,
.aluminum-submit {
  min-height: 42px;
  border: 1px solid var(--aluminum-line);
  border-radius: 999px;
  padding: 0.65rem 0.9rem;
  background: rgba(255, 255, 255, 0.5);
  color: var(--text);
  font-weight: 900;
}

:root[data-theme="dark"] .aluminum-mode-switch button,
:root[data-theme="dark"] .aluminum-preview-tabs button,
:root[data-theme="dark"] .aluminum-step-actions button,
:root[data-theme="dark"] .aluminum-result-actions button,
:root[data-theme="dark"] .style-switcher button,
:root[data-theme="dark"] .aluminum-submit {
  background: rgba(255, 255, 255, 0.05);
}

.aluminum-mode-switch button[aria-pressed="true"],
.aluminum-preview-tabs button[aria-selected="true"],
.style-switcher button.is-active,
.aluminum-submit {
  border-color: var(--aluminum-line-strong);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.18), rgba(21, 128, 61, 0.08));
  color: var(--aluminum-amber-dark);
}

:root[data-theme="dark"] .aluminum-mode-switch button[aria-pressed="true"],
:root[data-theme="dark"] .aluminum-preview-tabs button[aria-selected="true"],
:root[data-theme="dark"] .style-switcher button.is-active,
:root[data-theme="dark"] .aluminum-submit {
  color: #fde68a;
}

.aluminum-mode-switch .active-tab {
  border-radius: 12px 12px 0 0;
  border-bottom: 2px solid #f59e0b;
}

.aluminum-progress {
  display: none;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1rem;
  color: var(--text-soft);
  font-weight: 900;
}

.aluminum-progress.is-visible {
  display: grid;
}

.aluminum-progress-track {
  height: 9px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(120, 113, 108, 0.18);
}

.aluminum-progress-fill {
  display: block;
  width: 20%;
  height: 100%;
  background: linear-gradient(90deg, #f59e0b, #d97706);
}

.aluminum-form {
  display: grid;
  gap: 0.95rem;
}

.aluminum-fieldset {
  display: grid;
  gap: 0.65rem;
  min-width: 0;
  margin: 0;
  padding: 0.95rem;
  border: 1px solid var(--aluminum-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.28);
}

:root[data-theme="dark"] .aluminum-fieldset {
  background: rgba(255, 255, 255, 0.035);
}

.aluminum-fieldset legend {
  padding: 0 0.35rem;
  color: var(--text);
  font-weight: 900;
}

.aluminum-choice-grid {
  display: grid;
  gap: 0.65rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.aluminum-choice-grid.compact {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.aluminum-choice {
  position: relative;
  min-width: 0;
}

.aluminum-choice input {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.aluminum-choice label {
  display: grid;
  gap: 0.22rem;
  min-height: 100%;
  padding: 0.82rem;
  border: 1px solid var(--aluminum-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.42);
  transition: 160ms ease;
}

:root[data-theme="dark"] .aluminum-choice label {
  background: rgba(255, 255, 255, 0.04);
}

.aluminum-choice input:checked + label {
  border-color: var(--aluminum-line-strong);
  background: var(--aluminum-soft);
}

.aluminum-choice span,
.aluminum-field-help,
.aluminum-small,
.aluminum-info-card p,
.aluminum-related-card p,
.share-output {
  color: var(--text-soft);
}

.aluminum-input-row,
.aluminum-gate-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: minmax(130px, 0.7fr) minmax(0, 1fr);
  align-items: end;
}

.aluminum-fieldset input[type="number"],
.aluminum-fieldset select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--aluminum-line);
  border-radius: 14px;
  padding: 0.8rem 0.9rem;
  color: var(--text);
  background: rgba(255, 255, 255, 0.56);
}

:root[data-theme="dark"] .aluminum-fieldset input[type="number"],
:root[data-theme="dark"] .aluminum-fieldset select {
  background: rgba(255, 255, 255, 0.06);
}

.aluminum-hidden {
  display: none !important;
}

.aluminum-warning {
  display: none;
  margin: 0;
  padding: 0.7rem 0.8rem;
  border: 1px solid rgba(220, 38, 38, 0.18);
  border-radius: 12px;
  color: #991b1b;
  background: rgba(254, 226, 226, 0.52);
}

.aluminum-warning.is-visible {
  display: block;
}

:root[data-theme="dark"] .aluminum-warning {
  color: #fecaca;
  background: rgba(127, 29, 29, 0.28);
}

.aluminum-submit {
  justify-content: center;
  width: 100%;
  border-radius: 14px;
  background: #111827;
  color: #fff;
}

.aluminum-preview-card,
.aluminum-estimate-card,
.aluminum-comparison-card {
  display: grid;
  gap: 0.95rem;
  padding: 1rem;
  border: 1px solid var(--aluminum-line);
  border-radius: 18px;
  background: var(--aluminum-panel-strong);
}

.aluminum-results-panel {
  display: grid;
  gap: 1rem;
}

.aluminum-preview-stage {
  min-height: 280px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--aluminum-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.36);
  color: var(--aluminum-svg);
}

:root[data-theme="dark"] .aluminum-preview-stage {
  background: rgba(255, 255, 255, 0.04);
}

.aluminum-preview-stage svg {
  display: block;
  width: 100%;
  height: auto;
}

.estimate-head,
.estimate-total,
.aluminum-budget-line {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.estimate-head span {
  align-self: start;
  padding: 0.35rem 0.62rem;
  border-radius: 999px;
  background: var(--aluminum-soft);
  color: var(--aluminum-amber-dark);
  font-size: 0.82rem;
  font-weight: 900;
}

:root[data-theme="dark"] .estimate-head span {
  color: #fcd34d;
}

.estimate-total {
  padding: 0.9rem 0;
  border-top: 1px solid var(--aluminum-line);
  border-bottom: 1px solid var(--aluminum-line);
}

.estimate-total strong {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.65rem);
  line-height: 1;
  letter-spacing: -0.04em;
  text-align: right;
}

.aluminum-materials {
  display: grid;
  gap: 0.45rem;
}

.aluminum-materials h4 {
  margin: 0.55rem 0 0.1rem;
  color: var(--aluminum-amber-dark);
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

:root[data-theme="dark"] .aluminum-materials h4 {
  color: #fcd34d;
}

.aluminum-material-row {
  display: grid;
  gap: 0.55rem;
  grid-template-columns: 1.05fr 0.62fr 1.55fr;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(120, 113, 108, 0.16);
}

.aluminum-material-row strong,
.aluminum-budget-line strong {
  font-family: var(--font-heading);
}

.aluminum-material-row em {
  color: var(--text-soft);
  font-style: normal;
}

.aluminum-result-actions button:first-child {
  background: #111827;
  color: #fff;
}

.aluminum-simple-table {
  width: 100%;
  border-collapse: collapse;
}

.aluminum-simple-table th,
.aluminum-simple-table td {
  padding: 0.7rem;
  border-bottom: 1px solid var(--aluminum-line);
  text-align: left;
  vertical-align: top;
}

.aluminum-simple-table th {
  color: var(--text);
  background: rgba(245, 158, 11, 0.12);
  font-size: 0.88rem;
}

.aluminum-table-wrap {
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
}

.aluminum-how-grid,
.aluminum-related-grid,
.aluminum-split {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.aluminum-split {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 1rem;
}

.aluminum-info-card,
.aluminum-related-card {
  display: grid;
  gap: 0.55rem;
  align-content: start;
  padding: 1rem;
  border-radius: 18px;
}

.aluminum-info-card span,
.aluminum-related-card span {
  width: fit-content;
  padding: 0.3rem 0.62rem;
  border-radius: 999px;
  background: var(--aluminum-soft);
  color: var(--aluminum-amber-dark);
  font-weight: 900;
}

:root[data-theme="dark"] .aluminum-info-card span,
:root[data-theme="dark"] .aluminum-related-card span {
  color: #fde68a;
}

.aluminum-tip,
.aluminum-cost-link {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--aluminum-line);
  border-radius: 14px;
  background: var(--aluminum-soft);
  color: var(--text);
}

.aluminum-faq {
  display: grid;
  gap: 0.75rem;
}

.aluminum-faq details {
  border: 1px solid var(--aluminum-line);
  border-radius: 14px;
  background: var(--aluminum-panel);
}

.aluminum-faq summary {
  cursor: pointer;
  padding: 1rem;
  color: var(--text);
  font-weight: 900;
}

.aluminum-faq details > div {
  padding: 0 1rem 1rem;
  color: var(--text-soft);
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 30;
  display: grid;
  gap: 0.2rem;
  max-width: min(340px, calc(100vw - 2rem));
  padding: 0.9rem 1rem;
  border: 1px solid var(--aluminum-line);
  border-radius: 14px;
  background: var(--aluminum-panel-strong);
  color: var(--text);
  box-shadow: var(--shadow-strong);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: 160ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .aluminum-hero-grid,
  .aluminum-calculator-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .style-tile-grid {
    grid-template-columns: repeat(5, minmax(150px, 1fr));
    overflow-x: auto;
  }
}

@media (max-width: 780px) {
  .aluminum-hero {
    padding-top: 2.1rem;
  }

  .aluminum-calculator-title,
  .style-showcase-head,
  .estimate-head,
  .estimate-total,
  .aluminum-budget-line {
    align-items: stretch;
    flex-direction: column;
  }

  .aluminum-choice-grid,
  .aluminum-choice-grid.compact,
  .aluminum-input-row,
  .aluminum-gate-grid,
  .aluminum-how-grid,
  .aluminum-related-grid,
  .aluminum-split {
    grid-template-columns: minmax(0, 1fr);
  }

  .aluminum-material-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .estimate-total strong {
    text-align: left;
  }
}