:root {
  color-scheme: light;
  --bg: #f8f9fa;
  --card: #ffffff;
  --line: #dee2e6;
  --ink: #212529;
  --muted: #6c757d;
  --accent: #0d6efd;
  --accent-soft: rgba(13, 110, 253, 0.08);
  --good: #198754;
  --bad: #b02a37;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

main {
  width: min(1040px, calc(100% - 24px));
  margin: 0 auto;
  padding: 20px 0 36px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 14px;
}

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

h1 {
  font-size: clamp(1.8rem, 3.8vw, 2.8rem);
  line-height: 1.05;
  margin-bottom: 10px;
}

h2 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

p {
  color: var(--muted);
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.toplinks {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  font-size: 0.92rem;
}

.layout {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
}

.panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  background: #fff;
}

.panel + .panel {
  margin-top: 14px;
}

.grid {
  display: grid;
  gap: 12px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.92rem;
  color: var(--ink);
}

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

textarea,
input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  padding: 10px 12px;
  outline: none;
}

textarea:focus,
input:focus,
select:focus {
  border-color: rgba(13, 110, 253, 0.45);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

textarea {
  min-height: 108px;
  resize: vertical;
  line-height: 1.55;
  font-family: var(--mono);
  font-size: 0.95rem;
}

.row-2 {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.row-3 {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.btn {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px 12px;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.btn:hover,
.btn:focus-visible {
  border-color: rgba(13, 110, 253, 0.35);
  background: rgba(13, 110, 253, 0.05);
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #0b5ed7;
  border-color: #0b5ed7;
  color: #fff;
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.preset-row .btn {
  padding-inline: 11px;
  font-size: 0.88rem;
}

.preset-row .btn.is-active {
  border-color: var(--accent);
  background: rgba(13, 110, 253, 0.08);
}

.field-help {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.45;
}

.output-grid {
  display: grid;
  gap: 12px;
}

.output-block {
  display: grid;
  gap: 6px;
}

.output {
  display: grid;
  gap: 10px;
}

.hash-box {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f8fafc;
  padding: 14px;
  font-family: var(--mono);
  font-size: 0.92rem;
  line-height: 1.6;
  word-break: break-all;
  min-height: 108px;
  white-space: pre-wrap;
}

.status {
  font-size: 0.92rem;
  color: var(--muted);
}

.status strong {
  color: var(--ink);
}

.status.good {
  color: var(--good);
}

.status.bad {
  color: var(--bad);
}

.small {
  font-size: 0.88rem;
  color: var(--muted);
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  background: #fff;
  color: var(--muted);
  font-size: 0.84rem;
  white-space: nowrap;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  main {
    width: min(100% - 16px, 1040px);
    padding-top: 16px;
  }

  .card,
  .panel {
    padding: 14px;
  }

  .row-2,
  .row-3 {
    grid-template-columns: 1fr;
  }
}