:root {
  --ink: #1f241b;
  --paper: #f4ecd8;
  --clay: #c86f3f;
  --moss: #566b3f;
  --line: rgba(31, 36, 27, 0.16);
  --shadow: 0 24px 70px rgba(31, 36, 27, 0.22);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Georgia, 'Times New Roman', serif;
  background:
    radial-gradient(circle at 12% 18%, rgba(200, 111, 63, 0.28), transparent 28rem),
    radial-gradient(circle at 86% 8%, rgba(86, 107, 63, 0.22), transparent 24rem),
    linear-gradient(135deg, #f8f0dc 0%, #e8d5af 100%);
  overflow-x: hidden;
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

.hero {
  max-width: 860px;
  margin-bottom: 24px;
  animation: rise 600ms ease both;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--clay);
  font: 700 13px/1.2 Verdana, sans-serif;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(42px, 6vw, 86px);
  line-height: 0.96;
  letter-spacing: -0.055em;
  text-wrap: balance;
}

.subtitle {
  max-width: 580px;
  margin-bottom: 0;
  font-size: 19px;
  line-height: 1.5;
}

.panel {
  display: grid;
  grid-template-columns: minmax(340px, 0.82fr) minmax(420px, 1.18fr);
  gap: 22px;
  align-items: stretch;
  height: 720px;
}

.form,
.output-card {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255, 250, 238, 0.76);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.form {
  display: grid;
  grid-template-rows: auto auto auto auto;
  gap: 18px;
  padding: 24px;
  min-height: 0;
}

label {
  display: grid;
  gap: 8px;
  font: 700 13px/1.2 Verdana, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

small {
  color: rgba(31, 36, 27, 0.62);
  font: 12px/1.4 Verdana, sans-serif;
  letter-spacing: 0;
  text-transform: none;
}

textarea,
select,
input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 15px 16px;
  color: var(--ink);
  background: #fff9ea;
  font: 16px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  outline: none;
}

textarea {
  height: 300px;
  min-height: 0;
  resize: vertical;
}
select,
input { height: 58px; }
select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(135deg, var(--ink) 50%, transparent 50%);
  background-position: calc(100% - 22px) 50%, calc(100% - 16px) 50%;
  background-repeat: no-repeat;
  background-size: 6px 6px, 6px 6px;
  padding-right: 44px;
}

textarea:focus,
select:focus,
input:focus { border-color: var(--clay); }

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 15px 20px;
  color: #fff9ea;
  background: var(--ink);
  font: 800 14px/1 Verdana, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

button:hover { background: var(--clay); }
button:disabled { cursor: wait; opacity: 0.65; }

.message {
  min-height: 20px;
  margin: 0;
  color: var(--clay);
  font: 700 13px/1.4 Verdana, sans-serif;
}

.output-card {
  min-width: 0;
  overflow: hidden;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
}

.output-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  font: 700 13px/1 Verdana, sans-serif;
}

#copyBtn {
  padding: 10px 14px;
  background: var(--moss);
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.actions button {
  padding: 10px 14px;
  background: var(--moss);
}

pre {
  height: 100%;
  min-height: 0;
  max-height: none;
  margin: 0;
  padding: 22px;
  overflow: auto;
  font: 14px/1.55 ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: pre-wrap;
}

[hidden] {
  display: none !important;
}

.empty-state {
  display: grid;
  align-content: center;
  justify-items: start;
  height: 100%;
  min-height: 0;
  padding: 42px;
  color: rgba(31, 36, 27, 0.66);
}

.empty-state span {
  display: inline-flex;
  margin-bottom: 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--moss);
  font: 800 12px/1 Verdana, sans-serif;
  letter-spacing: 0.16em;
}

.empty-state strong {
  max-width: 420px;
  color: var(--ink);
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1;
  letter-spacing: -0.04em;
}

.empty-state p {
  max-width: 360px;
  margin: 16px 0 0;
  font-size: 17px;
  line-height: 1.5;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 820px) {
  .shell { padding: 34px 0; }
  .panel,
  .grid { grid-template-columns: 1fr; }
  .panel { height: auto; }
  h1 { font-size: clamp(40px, 14vw, 62px); }
  .output-head { align-items: flex-start; flex-direction: column; }
  .output-card { grid-template-rows: auto 420px; min-height: 0; }
}