:root {
  color-scheme: light;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f7fb;
  color: #0f172a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
}

.shell {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 64px;
  display: grid;
  gap: 20px;
}

.shell.narrow {
  width: min(760px, calc(100% - 32px));
}

.hero,
.panel {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid #dbe4f0;
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
}

.hero.compact {
  padding-bottom: 18px;
}

.eyebrow {
  margin: 0 0 10px;
  color: #2563eb;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0 0 12px;
}

.lede {
  margin: 0;
  color: #475569;
  line-height: 1.6;
  max-width: 70ch;
}

.panel-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.panel-heading,
.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

button,
.link-button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 11px 16px;
  background: #0f172a;
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

button.secondary,
.secondary-link {
  background: #e2e8f0;
  color: #0f172a;
}

button:hover,
.link-button:hover {
  opacity: 0.92;
}

form,
.stack-form {
  display: grid;
  gap: 12px;
}

input,
textarea,
pre {
  width: 100%;
  border-radius: 14px;
  border: 1px solid #cbd5e1;
  padding: 12px 14px;
  background: #fff;
  color: #0f172a;
  font: inherit;
}

pre {
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 80px;
}

ul {
  margin: 0;
  padding-left: 20px;
  color: #334155;
  line-height: 1.7;
}

.status-text {
  min-height: 24px;
  margin: 8px 0 0;
  color: #2563eb;
  font-weight: 600;
}

.todo-list {
  display: grid;
  gap: 10px;
}

.todo-item {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid #dbe4f0;
  background: #f8fafc;
}

.todo-item strong {
  display: block;
  margin-bottom: 4px;
}

.todo-item p {
  margin: 0;
  color: #64748b;
  font-size: 14px;
}

.todo-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.empty-state {
  padding: 18px;
  border-radius: 16px;
  border: 1px dashed #cbd5e1;
  color: #64748b;
  background: #f8fafc;
}

@media (max-width: 720px) {
  .shell {
    width: calc(100% - 20px);
    padding: 20px 0 40px;
  }

  .todo-item,
  .panel-heading,
  .button-row {
    flex-direction: column;
    align-items: stretch;
  }
}