:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --panel: #ffffff;
  --text: #1d2433;
  --muted: #667085;
  --line: #d8dee9;
  --primary: #047857;
  --primary-dark: #065f46;
  --secondary: #1f4b99;
  --danger: #b42318;
  --warning-bg: #fff7ed;
  --warning-line: #fed7aa;
  --shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.45;
}

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

button {
  cursor: pointer;
}

.app-shell {
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 20px;
}

.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

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

h1 {
  font-size: 30px;
  line-height: 1.12;
}

h2 {
  font-size: 18px;
}

h3 {
  grid-column: 1 / -1;
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--secondary);
}

.status-pill {
  min-width: 92px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  padding: 8px 12px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(320px, 0.8fr) minmax(520px, 1.2fr);
  gap: 16px;
  align-items: start;
}

.settings-history {
  display: grid;
  grid-template-columns: minmax(320px, 0.95fr) minmax(320px, 1.05fr);
  gap: 16px;
  margin-top: 16px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 16px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.panel-head p {
  margin-top: 3px;
  color: var(--muted);
  font-size: 13px;
}

.compose-panel textarea {
  width: 100%;
  min-height: 300px;
  resize: vertical;
}

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

.form-grid.compact {
  margin-bottom: 12px;
}

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

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

input,
select,
textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  padding: 10px 11px;
  outline: none;
}

select[multiple] {
  min-height: 96px;
}

textarea {
  min-height: 90px;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(4, 120, 87, 0.14);
}

.action-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
}

.sticky-actions {
  position: sticky;
  bottom: 0;
  margin: 14px -16px -16px;
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
}

.primary-button,
.secondary-button,
.ghost-button {
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 10px 14px;
  font-weight: 750;
}

.primary-button {
  background: var(--primary);
  color: #fff;
}

.primary-button:hover {
  background: var(--primary-dark);
}

.secondary-button {
  border-color: #a7c8f2;
  background: #eff6ff;
  color: #174ea6;
}

.ghost-button {
  border-color: var(--line);
  background: #fff;
  color: var(--text);
}

.full-width {
  width: 100%;
}

.toggle {
  display: inline-flex;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 8px;
  color: var(--text);
  white-space: nowrap;
}

.toggle input {
  width: 18px;
  min-height: 18px;
}

.warnings {
  border: 1px solid var(--warning-line);
  border-radius: 8px;
  background: var(--warning-bg);
  color: #9a3412;
  padding: 10px 12px;
  margin-bottom: 12px;
  font-size: 13px;
}

.result {
  margin-top: 12px;
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  background: #f0fdf4;
  padding: 12px;
  color: #14532d;
  font-weight: 700;
}

.history-list {
  display: grid;
  gap: 8px;
}

.history-item {
  display: grid;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: #fbfcff;
}

.history-item strong {
  color: var(--primary-dark);
}

.history-item span {
  color: var(--muted);
  font-size: 13px;
}

.empty-state {
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 18px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 960px) {
  .workspace,
  .settings-history {
    grid-template-columns: 1fr;
  }

  .compose-panel textarea {
    min-height: 220px;
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 12px;
  }

  .topbar {
    align-items: start;
    flex-direction: column;
  }

  h1 {
    font-size: 25px;
  }

  .panel {
    padding: 14px;
  }

  .panel-head {
    align-items: start;
    flex-direction: column;
  }

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

  .action-row {
    align-items: stretch;
    flex-direction: column;
  }

  .action-row button,
  .toggle {
    width: 100%;
    justify-content: center;
  }

  .sticky-actions {
    margin-right: -14px;
    margin-left: -14px;
    padding-right: 14px;
    padding-left: 14px;
  }
}