:root {
  color-scheme: light;
  --ink: #211b1d;
  --muted: #6d6870;
  --paper: #f7f8fa;
  --surface: #fffffd;
  --line: #d9dde3;
  --accent: #8f1d2c;
  --accent-strong: #6f1420;
  --accent-soft: #f4e2e4;
  --focus: #205493;
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(143, 29, 44, 0.08) 0 1px, transparent 1px 100%),
    linear-gradient(180deg, rgba(143, 29, 44, 0.06), transparent 42%),
    var(--paper);
  background-size: 28px 28px, auto, auto;
}

button,
input,
textarea {
  font: inherit;
}

.shell {
  min-height: 100vh;
  padding: max(22px, env(safe-area-inset-top)) 18px max(22px, env(safe-area-inset-bottom));
  display: grid;
  align-items: center;
}

.panel {
  width: min(100%, 560px);
  margin: 0 auto;
  padding: clamp(22px, 5vw, 42px);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 18px 60px rgba(38, 26, 22, 0.14);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font: 700 0.78rem/1.2 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 32px;
  font-size: clamp(2.55rem, 10vw, 4.8rem);
  line-height: 0.9;
  font-weight: 700;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font: 700 0.95rem/1.2 ui-sans-serif, system-ui, sans-serif;
}

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

label {
  color: var(--muted);
  font: 700 0.86rem/1.3 ui-sans-serif, system-ui, sans-serif;
}

textarea,
input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0;
  background: #fffffd;
  color: var(--ink);
  outline: none;
}

textarea {
  min-height: 144px;
  resize: vertical;
  padding: 16px;
  font: 1rem/1.45 ui-sans-serif, system-ui, sans-serif;
}

input {
  min-height: 46px;
  padding: 0 12px;
  font: 0.9rem/1.3 ui-sans-serif, system-ui, sans-serif;
}

textarea:focus,
input:focus,
button:focus-visible {
  border-color: var(--focus);
  box-shadow: 0 0 0 3px rgba(32, 84, 147, 0.18);
}

.message {
  min-height: 20px;
  margin: 0;
  color: var(--muted);
  font: 0.86rem/1.35 ui-sans-serif, system-ui, sans-serif;
}

.message.error {
  color: var(--accent-strong);
}

.actions {
  display: grid;
  grid-template-columns: 1fr 0.5fr 0.65fr;
  gap: 10px;
  margin-top: 2px;
}

button {
  min-height: 48px;
  border-radius: 0;
  cursor: pointer;
  touch-action: manipulation;
}

.primary {
  border: 1px solid var(--accent-strong);
  background: var(--accent);
  color: #fffaf9;
  font: 800 0.94rem/1 ui-sans-serif, system-ui, sans-serif;
}

.secondary {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font: 700 0.88rem/1 ui-sans-serif, system-ui, sans-serif;
}

.primary:active,
.secondary:active,
.history button:active {
  transform: translateY(1px);
}

.settings {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.settings-body {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.link-button {
  min-height: auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent);
  font: 800 0.84rem/1.2 ui-sans-serif, system-ui, sans-serif;
}

.history {
  margin-top: 26px;
}

.history-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

ol {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.history button {
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--accent-soft);
  color: var(--ink);
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
  font: 0.86rem/1 ui-sans-serif, system-ui, sans-serif;
}

.empty {
  color: var(--muted);
  font: 0.88rem/1.4 ui-sans-serif, system-ui, sans-serif;
}

@media (max-width: 460px) {
  .shell {
    align-items: start;
  }

  .panel {
    min-height: calc(100vh - 44px);
  }

  .actions {
    grid-template-columns: 1fr 1fr;
  }

  .primary {
    grid-column: 1 / -1;
  }
}