:root {
  color-scheme: light dark;
  --bg: #f4f6f7;
  --surface: #fbfcfc;
  --panel: #ffffff;
  --panel-strong: #f0f4f5;
  --text: #172026;
  --muted: #64727a;
  --line: #d8e0e3;
  --field: #ffffff;
  --accent: #11677a;
  --accent-hover: #0d5667;
  --accent-soft: #e0f0f3;
  --danger: #b74333;
  --danger-soft: #ffe7e2;
  --warning: #a36a10;
  --warning-soft: #fff3d8;
  --info: #2f6392;
  --info-soft: #e7f0f8;
  --shadow: 0 10px 28px rgba(18, 31, 38, 0.07);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1418;
    --surface: #141c21;
    --panel: #182228;
    --panel-strong: #202c33;
    --text: #eef4f6;
    --muted: #9fadb4;
    --line: #31414a;
    --field: #10181d;
    --accent: #66bfd1;
    --accent-hover: #86d4e2;
    --accent-soft: #173a43;
    --danger: #ff9a8e;
    --danger-soft: #44221f;
    --warning: #f0bf63;
    --warning-soft: #3b2d15;
    --info: #8fc2f0;
    --info-soft: #182b3d;
    --shadow: 0 16px 38px rgba(0, 0, 0, 0.26);
  }
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f6f7;
  --surface: #fbfcfc;
  --panel: #ffffff;
  --panel-strong: #f0f4f5;
  --text: #172026;
  --muted: #64727a;
  --line: #d8e0e3;
  --field: #ffffff;
  --accent: #11677a;
  --accent-hover: #0d5667;
  --accent-soft: #e0f0f3;
  --danger: #b74333;
  --danger-soft: #ffe7e2;
  --warning: #a36a10;
  --warning-soft: #fff3d8;
  --info: #2f6392;
  --info-soft: #e7f0f8;
  --shadow: 0 10px 28px rgba(18, 31, 38, 0.07);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e1418;
  --surface: #141c21;
  --panel: #182228;
  --panel-strong: #202c33;
  --text: #eef4f6;
  --muted: #9fadb4;
  --line: #31414a;
  --field: #10181d;
  --accent: #66bfd1;
  --accent-hover: #86d4e2;
  --accent-soft: #173a43;
  --danger: #ff9a8e;
  --danger-soft: #44221f;
  --warning: #f0bf63;
  --warning-soft: #3b2d15;
  --info: #8fc2f0;
  --info-soft: #182b3d;
  --shadow: 0 16px 38px rgba(0, 0, 0, 0.26);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

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

.app-shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 16px;
  width: min(1360px, calc(100vw - 32px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 18px 0;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  padding: 8px 0 16px;
  background: var(--surface);
}

.theme-control {
  display: grid;
  gap: 6px;
  min-width: 128px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.kicker {
  margin: 0 0 5px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(24px, 2.4vw, 34px);
  line-height: 1.12;
}

h2 {
  font-size: 15px;
}

.calculator-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.92fr) minmax(0, 1.45fr);
  gap: 16px;
  min-height: 0;
}

.input-column,
.results-column,
.result-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.panel,
.metrics article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.panel {
  padding: 14px;
}

.primary-panel {
  border-color: color-mix(in srgb, var(--accent) 26%, var(--line));
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.panel-head span,
.metrics span,
dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.input-zone label,
.example-control,
.salt-controls label,
.spps-controls label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.example-control {
  margin-top: 12px;
}

.compact-control {
  margin-top: 10px;
}

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

textarea {
  display: block;
  min-height: 250px;
  resize: vertical;
  padding: 14px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 15px;
  line-height: 1.55;
}

select,
input {
  min-height: 40px;
  padding: 0 10px;
}

textarea:focus,
select:focus,
input:focus,
.button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-color: var(--accent);
}

.salt-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 116px;
  gap: 10px;
  margin-top: 12px;
}

.spps-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 12px;
}

.metrics article {
  display: flex;
  min-height: 104px;
  flex-direction: column;
  justify-content: space-between;
  padding: 14px;
  background: var(--panel-strong);
}

.metrics strong {
  overflow-wrap: anywhere;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(21px, 2vw, 29px);
  line-height: 1;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.risk-panel,
.report-panel,
.spps-panel {
  grid-column: 1 / -1;
}

.formula-list {
  margin: 0;
}

.formula-list div {
  border-top: 1px solid var(--line);
  padding: 11px 0;
}

.formula-list div:first-child {
  border-top: 0;
  padding-top: 0;
}

dd {
  margin: 4px 0 0;
  overflow-wrap: anywhere;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 14px;
}

.tag-cloud,
.terminal-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.terminal-summary {
  margin-bottom: 12px;
}

.tag,
.terminal-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 30px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 10px;
  background: var(--panel-strong);
  color: var(--text);
  font-size: 13px;
  font-weight: 800;
}

.tag small {
  color: var(--muted);
  font-weight: 700;
}

.sequence-list,
.risk-list {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.sequence-list {
  display: grid;
  gap: 8px;
}

.sequence-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px;
  background: var(--field);
}

.sequence-index {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
}

.sequence-name {
  min-width: 0;
  font-weight: 800;
}

.sequence-mods {
  color: var(--muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.sequence-mods.error {
  color: var(--danger);
  font-weight: 900;
}

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

.risk-list li {
  border-left: 4px solid var(--info);
  border-radius: 6px;
  padding: 10px 10px 10px 12px;
  background: var(--info-soft);
  color: var(--text);
  font-size: 14px;
  line-height: 1.45;
}

.risk-list li.high {
  border-left-color: var(--danger);
  background: var(--danger-soft);
}

.risk-list li.medium {
  border-left-color: var(--warning);
  background: var(--warning-soft);
}

.spps-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.spps-summary article {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: var(--panel-strong);
}

.spps-summary span,
.spps-table dt {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.spps-summary strong,
.spps-table dd {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.spps-table {
  display: grid;
  gap: 8px;
}

.spps-row {
  display: grid;
  grid-template-columns: minmax(120px, 1.1fr) repeat(4, minmax(0, 1fr));
  gap: 10px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: var(--field);
}

.spps-row dl {
  display: contents;
}

.report-panel pre {
  max-height: 260px;
  overflow: auto;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #111a17;
  color: #ecf5f1;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  line-height: 1.55;
  white-space: pre-wrap;
}

.action-bar {
  position: sticky;
  bottom: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
  font-weight: 850;
}

.button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.button.primary:hover {
  background: var(--accent-hover);
  color: #ffffff;
}

@media (max-width: 1120px) {
  .calculator-layout,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100% - 20px, 720px);
    padding: 10px 0;
  }

  .app-header {
    align-items: stretch;
    flex-direction: column;
    padding: 4px 0 12px;
  }

  textarea {
    min-height: 170px;
    font-size: 14px;
  }

  .metrics,
  .salt-controls,
  .spps-controls,
  .spps-summary,
  .spps-row,
  .sequence-list li,
  .action-bar {
    grid-template-columns: 1fr;
  }

  .sequence-index {
    width: 100%;
  }
}