:root {
  --bg-0: #f2f5f3;
  --bg-1: #fcfdfb;
  --text: #152018;
  --muted: #546458;
  --line: #cfdbd1;
  --brand: #00684a;
  --brand-2: #0b8e66;
  --danger: #a11f1f;
  --card: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "Trebuchet MS", sans-serif;
  color: var(--text);
  background: linear-gradient(160deg, var(--bg-0), var(--bg-1));
}

.bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 15% 10%, rgba(0, 104, 74, 0.08), transparent 45%),
    radial-gradient(circle at 88% 20%, rgba(11, 142, 102, 0.08), transparent 30%);
  pointer-events: none;
}

.shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

.card,
.app {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 20px 40px rgba(21, 32, 24, 0.06);
}

.card {
  max-width: 460px;
  margin: 72px auto 0;
  padding: 24px;
}

h1,
h2 {
  margin: 0 0 8px;
}

.muted {
  color: var(--muted);
  margin: 0 0 14px;
}

form {
  display: grid;
  gap: 10px;
}

label {
  font-weight: 600;
}

input,
select,
button {
  font: inherit;
}

input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

button {
  border: 0;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  padding: 10px 14px;
  cursor: pointer;
}

button:hover {
  background: var(--brand-2);
}

.ghost {
  background: #f1f5f2;
  color: var(--text);
  border: 1px solid var(--line);
}

.ghost:hover {
  background: #e7efe9;
}

.error {
  color: var(--danger);
  min-height: 1.2em;
  margin: 8px 0 0;
}

.hidden {
  display: none;
}

.app {
  padding: 18px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.top-links {
  display: flex;
  gap: 8px;
  align-items: center;
}

a.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  padding: 8px 12px;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 18px;
}

.tab {
  background: #edf4ef;
  color: var(--text);
  border: 1px solid var(--line);
}

.tab.active {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

.panel {
  display: none;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.panel.active {
  display: block;
}

.row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.row input {
  flex: 1;
}

.data {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f8fbf9;
  padding: 12px;
  min-height: 140px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.write-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.write-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: #f8fbf9;
  display: grid;
  gap: 8px;
}

.write-card h3 {
  margin: 0;
  font-size: 14px;
}

@media (max-width: 640px) {
  .shell {
    padding: 14px 10px 24px;
  }

  .card {
    margin-top: 24px;
  }

  .topbar {
    flex-direction: column;
  }

  .row {
    flex-direction: column;
  }
}