:root {
  --background: #fffaf4;
  --surface: #ffffff;
  --ink: #221d18;
  --muted: #71675d;
  --line: #c92f25;
  --line-soft: #f4d8d3;
  --accent: #f39a35;
  --accent-soft: #fff0dd;
  --border: #eaded1;
  --shadow: 0 18px 45px rgba(67, 45, 25, 0.11);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--background);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

body.is-locked {
  display: grid;
  place-items: center;
  padding: 20px;
}

button,
input {
  font: inherit;
}

.password-gate {
  width: min(520px, 100%);
}

.password-card {
  display: grid;
  gap: 18px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.password-card h1 {
  font-size: clamp(2rem, 8vw, 3.8rem);
}

.password-card label span {
  display: block;
  margin-bottom: 7px;
  font-weight: 700;
}

.password-card input {
  width: 100%;
  min-height: 48px;
  padding: 10px 13px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fffdf9;
  color: var(--ink);
}

.password-card input:focus {
  outline: 3px solid var(--line-soft);
  border-color: var(--line);
}

.password-message {
  min-height: 1.5em;
  margin-bottom: 0;
  color: var(--line);
  font-weight: 700;
}

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 36px 0 56px;
}

.input-panel {
  display: grid;
  gap: 24px;
  align-items: start;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.app-heading {
  width: 100%;
}

.eyebrow,
.result-kicker {
  margin: 0 0 6px;
  color: var(--line);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(2rem, 5vw, 4.4rem);
  line-height: 1;
}

.calculator-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.calculator-form label span,
legend {
  display: block;
  margin-bottom: 7px;
  font-weight: 700;
}

.calculator-form input[type="text"] {
  width: 100%;
  min-height: 48px;
  padding: 10px 13px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fffdf9;
  color: var(--ink);
}

.calculator-form input[type="text"]:focus {
  outline: 3px solid var(--line-soft);
  border-color: var(--line);
}

fieldset {
  display: flex;
  flex-wrap: wrap;
  grid-column: 1 / -1;
  gap: 8px 22px;
  margin: 0;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
}

fieldset legend {
  width: 100%;
}

.choice {
  display: flex;
  flex: 1 1 260px;
  gap: 10px;
  align-items: flex-start;
  margin-top: 8px;
}

.choice span {
  margin: 0;
  font-weight: 400;
}

button {
  grid-column: 1 / -1;
  min-height: 50px;
  padding: 11px 18px;
  border: 0;
  border-radius: 6px;
  background: var(--line);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

button:hover {
  background: #a9251e;
}

.quick-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.quick-summary:empty {
  display: none;
}

.quick-summary-card {
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.quick-summary-card h2 {
  margin-bottom: 12px;
  color: var(--line);
  font-size: 1rem;
}

.quick-summary-list {
  display: grid;
  gap: 9px;
  margin: 0;
}

.quick-summary-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.quick-summary-row dt {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
}

.quick-summary-row dd {
  display: flex;
  gap: 8px;
  align-items: baseline;
  min-width: 0;
  margin: 0;
}

.quick-summary-row strong {
  display: inline-grid;
  place-items: center;
  min-width: 26px;
  min-height: 26px;
  border-radius: 6px;
  background: var(--line);
  color: #fff;
  font-size: 0.95rem;
}

.quick-summary-row span {
  min-width: 0;
  overflow-wrap: anywhere;
  font-weight: 700;
}

.quick-summary-empty {
  margin-bottom: 0;
  color: var(--muted);
}

.results {
  display: grid;
  gap: 26px;
  margin-top: 30px;
}

.empty-state,
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.empty-state {
  padding: 24px;
  color: var(--muted);
}

.result-card {
  padding: 26px;
  overflow: hidden;
}

.result-header {
  display: flex;
  gap: 18px;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 22px;
}

.result-header h2 {
  margin-bottom: 0;
  font-size: clamp(1.75rem, 4vw, 3.1rem);
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.normalized-box,
.unknown-warning,
.special-note,
.interpretation {
  border-radius: 8px;
  background: var(--accent-soft);
}

.normalized-box {
  min-width: min(280px, 100%);
  padding: 13px 15px;
  border: 1px solid #f0c28b;
}

.normalized-box span {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.normalized-box strong {
  display: block;
  margin-top: 2px;
  color: #743f04;
  font-size: 1.25rem;
  overflow-wrap: anywhere;
}

.unknown-warning {
  margin-bottom: 18px;
  padding: 12px 14px;
  border: 1px solid #f0c28b;
  color: #7a2d00;
  font-weight: 700;
}

.alphabet-table {
  display: grid;
  grid-template-columns: minmax(84px, 126px) repeat(var(--letter-count, 1), minmax(42px, 1fr));
  margin: 16px 0 22px;
  overflow-x: auto;
  border-top: 3px solid var(--line);
  border-bottom: 3px solid var(--line);
}

.row-label,
.letter-cell,
.value-cell {
  min-height: 44px;
  display: grid;
  place-items: center;
  padding: 7px 8px;
  border-bottom: 1px solid var(--line-soft);
}

.row-label {
  justify-content: start;
  color: var(--line);
  font-weight: 800;
}

.empty-label {
  color: var(--muted);
}

.letter-cell {
  font-size: 1.25rem;
  font-weight: 800;
}

.value-cell {
  min-width: 42px;
  color: var(--muted);
  font-size: 1.1rem;
}

.value-cell.active {
  color: var(--ink);
  font-weight: 800;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.summary-item {
  padding: 15px;
  border-top: 4px solid var(--line);
  background: #fffdf9;
  border-radius: 8px;
  box-shadow: inset 0 0 0 1px var(--border);
}

.summary-item h3 {
  margin-bottom: 10px;
  color: var(--line);
  font-size: 1rem;
}

.formula {
  margin-bottom: 7px;
  font-size: 1.05rem;
  font-weight: 800;
}

.meaning {
  margin-bottom: 5px;
  font-size: 1.1rem;
  font-weight: 800;
}

.law {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.special-note,
.interpretation {
  margin: 18px 0 0;
  padding: 14px 16px;
  color: #5b3106;
}

.interpretation {
  border: 1px solid #f0c28b;
}

.interpretation p:last-child,
.special-note {
  margin-bottom: 0;
}

@media (max-width: 780px) {
  .app-shell {
    width: min(100% - 20px, 1180px);
    padding-top: 10px;
  }

  .input-panel,
  .calculator-form,
  .quick-summary,
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .input-panel,
  .result-card {
    padding: 18px;
  }

  .result-header {
    display: grid;
  }
}