:root {
  color-scheme: dark;
  --page: #020712;
  --header: #111827;
  --card: #111827;
  --card-strong: #1f2937;
  --field: #273244;
  --line: #2d3748;
  --line-strong: #3b4658;
  --text: #f8fafc;
  --muted: #c7d2e1;
  --soft: #94a3b8;
  --accent: #facc15;
  --blue: #93c5fd;
  --red: #fb7185;
  --red-soft: #3b1722;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 64px;
  padding: 16px clamp(16px, 4vw, 40px);
  background: var(--header);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.brand {
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 800;
  text-decoration: none;
}

.menu-button {
  display: none;
  width: 36px;
  height: 34px;
  padding: 6px;
  border: 0;
  background: transparent;
}

.menu-button span {
  display: block;
  height: 2px;
  margin: 5px 0;
  border-radius: 999px;
  background: var(--muted);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
}

.site-nav a,
.site-footer a {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  border-radius: 8px;
  color: var(--muted);
  font-weight: 650;
  text-decoration: none;
}

.site-nav a {
  padding: 7px 10px;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.active,
.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--text);
  outline: none;
}

main {
  width: min(1120px, calc(100% - 32px));
  min-height: calc(100vh - 64px);
  margin: 0 auto;
}

.hero {
  padding: 26px 0 18px;
}

.hero-copy {
  max-width: 780px;
}

.hero h1,
.content-page h1 {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.85rem, 5vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero p {
  margin: 8px 0 0;
  color: var(--blue);
  font-size: clamp(0.98rem, 2.2vw, 1.12rem);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

.calculator-layout {
  display: grid;
  gap: 26px;
  padding: 12px 0 80px;
}

.summary-panel {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.summary-metric {
  min-height: 104px;
  display: grid;
  place-items: center;
  align-content: center;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
  text-align: center;
  box-shadow: var(--shadow);
}

.summary-metric strong {
  color: var(--text);
  font-size: clamp(1.55rem, 4vw, 2.2rem);
  line-height: 1.05;
}

.summary-metric span {
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 750;
}

.summary-metric small {
  color: var(--muted);
  font-size: 0.78rem;
}

.toolbar {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 14px;
}

.button,
.icon-button {
  min-height: 36px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: #0d121c;
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
  transition: border-color 120ms ease, background 120ms ease, transform 120ms ease;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 7px 13px;
}

.button:hover,
.icon-button:hover,
.button:focus-visible,
.icon-button:focus-visible {
  border-color: var(--blue);
  background: #151c29;
  outline: none;
  transform: translateY(-1px);
}

.button.primary,
.button.secondary {
  border-color: var(--line-strong);
  background: #0d121c;
}

.button.danger {
  color: var(--text);
}

.button.compact,
.add-year-wide {
  width: 100%;
}

.button.compact {
  margin-top: 4px;
}

.inline-action {
  width: max-content;
  margin-top: 10px;
}

.file-button {
  cursor: pointer;
}

#importFile {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.save-status {
  grid-column: 1 / -1;
  margin: -4px 0 0;
  color: var(--soft);
  font-size: 0.9rem;
}

.notice {
  grid-column: 1 / -1;
  display: none;
  padding: 12px 14px;
  border: 1px solid rgba(250, 204, 21, 0.42);
  border-radius: 8px;
  background: rgba(250, 204, 21, 0.1);
  color: #fde68a;
  font-weight: 700;
}

.notice.show {
  display: block;
}

.work-panel {
  display: grid;
  gap: 24px;
}

.section-heading {
  display: none;
}

.years-list {
  display: grid;
  gap: 24px;
}

.year-panel {
  padding: clamp(18px, 4vw, 28px);
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--card-strong);
  box-shadow: var(--shadow);
}

.item-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
}

.title-fields {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) minmax(130px, 0.42fr);
  gap: 14px;
  width: 100%;
}

label {
  display: grid;
  gap: 6px;
  color: var(--text);
  font-size: 0.84rem;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  min-height: 38px;
  padding: 8px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--field);
  color: var(--text);
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--blue);
  outline: 3px solid rgba(147, 197, 253, 0.18);
}

input.invalid {
  border-color: var(--red);
  background: var(--red-soft);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.item-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.icon-button {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: var(--text);
  font-size: 1.1rem;
  line-height: 1;
}

.pill {
  display: inline-flex;
  min-width: 124px;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 900;
  white-space: nowrap;
}

.pill::before {
  content: "Year Mark: ";
  color: var(--muted);
  font-weight: 750;
}

.pill.muted::before {
  content: "Module: ";
}

.validation-message {
  margin: 8px 0 0;
  color: #fecdd3;
  font-size: 0.86rem;
  font-weight: 750;
}

.validation-message:empty {
  display: none;
}

.modules-list {
  display: grid;
  gap: 14px;
  margin: 18px 0;
}

.module-row {
  padding: 16px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(17, 24, 39, 0.64);
}

.components-table {
  display: grid;
  gap: 8px;
  margin: 14px 0;
}

.components-header,
.component-row {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(130px, 1fr) minmax(130px, 0.88fr) 36px;
  gap: 10px;
}

.components-header {
  align-items: center;
  padding-inline: 2px;
  color: #a9c0df;
  font-size: 0.86rem;
  font-weight: 850;
}

.components-list {
  display: grid;
  gap: 10px;
}

.component-row {
  align-items: end;
  padding: 0;
  border: 0;
  background: transparent;
}

.component-row .validation-message {
  grid-column: 1 / -1;
  margin: 0;
}

.content-page {
  width: min(900px, 100%);
  margin: 28px auto 72px;
  padding: clamp(24px, 5vw, 46px);
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--card);
}

.content-page h1 {
  font-size: clamp(2.1rem, 6vw, 4rem);
}

.content-page h2,
.content-page h3 {
  margin: 28px 0 8px;
  color: var(--text);
  line-height: 1.2;
}

.content-page h2 {
  font-size: 1.35rem;
}

.content-page h3 {
  font-size: 1rem;
  color: #dbeafe;
}

.content-page p {
  max-width: 760px;
  color: var(--muted);
  font-size: 1rem;
}

.content-page .lead {
  color: var(--blue);
  font-size: 1.12rem;
}

.content-page ul {
  display: grid;
  gap: 6px;
  max-width: 760px;
  margin: 8px 0 18px;
  padding-left: 22px;
  color: var(--muted);
}

.contact-form {
  display: grid;
  gap: 16px;
  max-width: 720px;
  margin-top: 24px;
}

.contact-form .button {
  justify-self: start;
}

.faq-page section {
  display: grid;
  gap: 12px;
}

.faq-page details {
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--field);
}

.faq-page summary {
  min-height: 48px;
  padding: 13px 15px;
  color: var(--text);
  font-weight: 850;
  cursor: pointer;
}

.faq-page summary:focus-visible {
  outline: 3px solid rgba(147, 197, 253, 0.18);
  outline-offset: 2px;
}

.faq-page details p {
  margin: 0;
  padding: 0 15px 15px;
}

.page-cta {
  margin-top: 28px;
}

.honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.classification-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  max-width: 760px;
  margin: 14px 0;
}

.classification-list div {
  padding: 14px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--field);
}

.classification-list dt {
  color: var(--text);
  font-weight: 850;
}

.classification-list dd {
  margin: 4px 0 0;
  color: var(--muted);
}

.site-footer {
  display: grid;
  gap: 10px;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 30px 0 36px;
  color: var(--muted);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.site-footer p {
  margin: 0;
  color: var(--soft);
}

@media (max-width: 880px) {
  .summary-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: start;
    flex-wrap: wrap;
  }

  .menu-button {
    display: block;
  }

  .site-nav {
    width: 100%;
    display: grid;
    gap: 14px;
    padding-top: 10px;
  }

  .site-nav a {
    padding: 0;
  }

  body.nav-closed .site-nav {
    display: none;
  }

  .summary-panel,
  .title-fields,
  .component-row,
  .components-header,
  .classification-list {
    grid-template-columns: 1fr;
  }

  .components-header {
    display: none;
  }

  .item-head {
    display: grid;
  }

  .item-actions {
    justify-content: space-between;
  }

  .component-row .icon-button {
    justify-self: end;
  }
}

@media (max-width: 420px) {
  main,
  .site-footer {
    width: min(100% - 24px, 1120px);
  }

  .summary-metric {
    min-height: 100px;
  }
}