:root {
  --bg: #0c0f14;
  --bg-elevated: #141a24;
  --bg-input: #0e131c;
  --border: rgba(94, 234, 212, 0.12);
  --accent: #5eead4;
  --text: #e8edf5;
  --text-muted: #8b98ab;
  --danger: #f87171;
  --warn: #fbbf24;
  --success: #6ee7b7;
  --radius: 12px;
  --shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(94, 234, 212, 0.08), transparent),
    radial-gradient(ellipse 80% 50% at 100% 50%, rgba(56, 189, 248, 0.06), transparent),
    var(--bg);
}

main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

header.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.6rem, 3.5vw, 2.15rem);
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #f0fdfa 0%, var(--accent) 55%, #38bdf8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-guide {
  max-width: 48rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.hero-guide p {
  margin: 0 0 0.75rem;
}

.hero-guide a {
  color: var(--accent);
}

.workspace {
  display: grid;
  gap: 1rem;
}

.panel {
  padding: 1.1rem 1.15rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(20, 26, 36, 0.92);
  box-shadow: var(--shadow);
}

.panel h2 {
  margin: 0 0 0.85rem;
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.88rem;
  font-weight: 600;
}

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

input,
select,
textarea {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text);
}

textarea {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.82rem;
  line-height: 1.45;
  resize: vertical;
  min-height: 7rem;
}

.options-grid {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

.muted {
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
}

.callout {
  margin: 0.75rem 0 0;
  padding: 0.75rem 0.9rem;
  border-radius: 8px;
  border: 1px solid rgba(251, 191, 36, 0.35);
  background: rgba(251, 191, 36, 0.08);
  color: #fde68a;
  font-size: 0.88rem;
  line-height: 1.45;
}

.callout[hidden] {
  display: none;
}

.callout.info {
  border-color: rgba(94, 234, 212, 0.35);
  background: rgba(94, 234, 212, 0.08);
  color: #a7f3d0;
}

.tf-rows {
  display: grid;
  gap: 0.55rem;
}

.tf-row {
  display: grid;
  grid-template-columns: 1fr 5.5rem 5.5rem auto;
  gap: 0.5rem;
  align-items: end;
}

@media (max-width: 640px) {
  .tf-row {
    grid-template-columns: 1fr 1fr;
  }
}

.btn-primary,
.btn-secondary,
.btn-icon {
  cursor: pointer;
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 0.55rem 0.95rem;
  font-weight: 600;
}

.btn-primary {
  background: linear-gradient(135deg, #2dd4bf, #38bdf8);
  color: #0c0f14;
}

.btn-secondary,
.btn-icon {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn-icon {
  padding: 0.55rem 0.7rem;
}

.btn-primary:hover,
.btn-secondary:hover,
.btn-icon:hover {
  filter: brightness(1.08);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

#status {
  margin: 0.75rem 0 0;
  font-size: 0.88rem;
}

#status.error {
  color: var(--danger);
}

#status.ok {
  color: var(--success);
}

.track {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0.75rem 0 1rem;
}

.chip {
  font-size: 0.72rem;
  font-weight: 650;
  padding: 0.28rem 0.45rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(14, 19, 28, 0.9);
  color: var(--text-muted);
}

.chip.tf {
  color: #99f6e4;
  border-color: rgba(94, 234, 212, 0.35);
}

.chip.spacer {
  color: #94a3b8;
}

.chip.minimal {
  color: #fde68a;
  border-color: rgba(251, 191, 36, 0.35);
}

.chip.restriction {
  color: #c4b5fd;
  border-color: rgba(167, 139, 250, 0.35);
}

.seq-out {
  word-break: break-all;
}

.meta-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  margin: 0.75rem 0;
}

.meta-table th,
.meta-table td {
  text-align: left;
  padding: 0.45rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.meta-table th {
  color: var(--text-muted);
  font-weight: 600;
}

.hits-bad {
  color: var(--warn);
}

.hits-panel {
  margin-top: 1rem;
  padding-top: 0.25rem;
}

.hits-panel-head h2 {
  margin: 0 0 0.35rem;
  font-size: 0.95rem;
}

.hits-panel-head .muted {
  margin: 0 0 0.75rem;
}

.hits-table-wrap {
  overflow-x: auto;
}

.hits-table {
  min-width: 720px;
}

.hits-table code {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.78rem;
  color: #a5f3fc;
}

.matched-seq {
  color: #fde68a !important;
}

.hit-advice {
  color: var(--text-muted);
  font-size: 0.78rem;
  max-width: 22rem;
}

.hit-row {
  cursor: pointer;
}

.hit-row:hover,
.hit-row.active {
  background: rgba(94, 234, 212, 0.06);
}

.risk-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.risk-badge.risk-high,
.hit-mark.risk-high {
  color: #fecaca;
  border-color: rgba(248, 113, 113, 0.45);
  background: rgba(248, 113, 113, 0.18);
}

.risk-badge.risk-medium,
.hit-mark.risk-medium {
  color: #fde68a;
  border-color: rgba(251, 191, 36, 0.45);
  background: rgba(251, 191, 36, 0.15);
}

.risk-badge.risk-low,
.hit-mark.risk-low {
  color: #cbd5e1;
  border-color: rgba(148, 163, 184, 0.4);
  background: rgba(148, 163, 184, 0.12);
}

.seq-highlight-wrap {
  margin: 0 0 0.85rem;
}

.seq-highlight-label {
  margin: 0 0 0.35rem;
}

.seq-highlight {
  margin: 0;
  padding: 0.75rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 12rem;
  overflow: auto;
}

.hit-mark {
  border-radius: 3px;
  padding: 0 1px;
}

.hit-focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-radius: 2px;
}

.page-guide h2 {
  margin-top: 0;
}

.page-guide-body {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.guide-section h3 {
  margin: 1rem 0 0.4rem;
  font-size: 0.95rem;
  color: var(--text);
}

.guide-section ul {
  margin: 0.35rem 0 0;
  padding-left: 1.2rem;
}

.disabled-block {
  opacity: 0.55;
  pointer-events: none;
}

fieldset.inline-check {
  border: none;
  margin: 0.5rem 0 0;
  padding: 0;
}

fieldset.inline-check label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  grid-template-columns: none;
}

fieldset.inline-check input {
  width: auto;
}