:root {
  --blue: #004b8d;
  --blue-dark: #00345f;
  --blue-soft: #e7f1fb;

  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-soft: #f8fafc;

  --text: #1f2937;
  --muted: #6b7280;
  --border: #d9e1ea;

  --success: #107c10;
  --warning-bg: #fff4ce;
  --warning-text: #6f5200;
  --error-bg: #fde7e9;
  --error-text: #a4262c;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 14px;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 5px 16px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand-logo {
  max-width: 112px;
  max-height: 34px;
  width: auto;
  height: auto;
  object-fit: contain;
  flex: 0 0 auto;
}

.brand-copy h1 {
  margin: 0;
  font-size: 15px;
  line-height: 1.15;
  color: var(--blue-dark);
}

.brand-copy p {
  margin: 2px 0 0;
  font-size: 11px;
  color: var(--muted);
}

.tool-bar {
  padding: 9px 12px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
}

.select-field label,
.field label {
  display: block;
  margin-bottom: 4px;
  font-size: 10px;
  font-weight: 800;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.045em;
}

.select-shell {
  position: relative;
}

.select-shell select {
  width: 100%;
  appearance: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: linear-gradient(180deg, #ffffff, var(--surface-soft));
  color: var(--blue-dark);
  padding: 8px 34px 8px 12px;
  font-size: 12px;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

.select-arrow {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-54%);
  pointer-events: none;
  color: var(--blue-dark);
  font-size: 15px;
}

.tool-host {
  flex: 1;
  padding: 10px;
}

.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.tool-card-body {
  padding: 12px;
}

.tool-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.tool-title-row h2 {
  margin: 0;
  font-size: 16px;
  line-height: 1.2;
}

.tool-title-row p {
  margin: 3px 0 0;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.3;
}

.tool-badge {
  flex: 0 0 auto;
  border-radius: 999px;
  padding: 4px 8px;
  background: var(--blue-soft);
  color: var(--blue-dark);
  font-size: 10px;
  font-weight: 800;
}

.section-title {
  margin: 12px 0 7px;
  font-size: 10px;
  font-weight: 800;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.045em;
}

.format-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 7px;
  align-items: center;
}

.format-select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #ffffff;
  color: var(--text);
  padding: 8px 9px;
  font-size: 12px;
}

.secondary-button {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  color: var(--blue-dark);
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.secondary-button:hover {
  border-color: var(--blue);
  background: var(--blue-soft);
}

.current-choice {
  margin-top: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  border: 1px solid var(--border);
  font-size: 12px;
  line-height: 1.3;
}

.current-choice strong {
  color: var(--blue-dark);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
}

.field {
  min-width: 0;
}

.field.full {
  grid-column: 1 / -1;
}

.field input,
.field select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #ffffff;
  color: var(--text);
  padding: 8px 9px;
  font-size: 12px;
}

.field input:focus,
.field select:focus,
.format-select:focus,
.select-shell select:focus {
  outline: 3px solid rgba(0, 75, 141, 0.18);
  border-color: var(--blue);
}

.preview-panel {
  margin-top: 11px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #ffffff, var(--surface-soft));
}

.preview-label {
  margin-bottom: 6px;
  font-size: 10px;
  font-weight: 800;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.045em;
}

.preview-line {
  font-size: 12px;
  line-height: 1.5;
}

.code-pill {
  display: inline-block;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: #ffffff;
  padding: 3px 5px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
}

.advanced {
  margin-top: 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  overflow: hidden;
}

.advanced summary {
  padding: 10px 11px;
  font-size: 12px;
  font-weight: 800;
  color: var(--blue-dark);
  cursor: pointer;
}

.advanced-body {
  padding: 0 11px 10px;
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 9px 0;
  font-size: 12px;
  line-height: 1.3;
  color: var(--text);
}

.checkbox-row input {
  margin-top: 2px;
}

.action-bar {
  position: sticky;
  bottom: 0;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
}

.primary-button {
  width: 100%;
  border: 0;
  border-radius: var(--radius-md);
  background: var(--blue);
  color: #ffffff;
  padding: 10px 12px;
  font-size: 13px;
  font-weight: 800;
  box-shadow: var(--shadow-sm);
}

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

.primary-button:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.status {
  display: none;
  margin-top: 8px;
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.35;
}

.status.info {
  display: block;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  color: var(--text);
}

.status.success {
  display: block;
  background: #e7f6e7;
  border: 1px solid #b7dfb7;
  color: var(--success);
}

.status.warning {
  display: block;
  background: var(--warning-bg);
  border: 1px solid #edd77a;
  color: var(--warning-text);
}

.status.error {
  display: block;
  background: var(--error-bg);
  border: 1px solid #f3b6bd;
  color: var(--error-text);
}

.empty-state {
  padding: 14px;
  color: var(--muted);
  font-size: 12px;
}

@media (max-height: 620px) {
  .brand-copy p,
  .tool-title-row p,
  .current-choice {
    display: none;
  }

  .app-header {
    padding: 8px 10px;
  }

  .brand-logo {
    max-height: 28px;
  }

  .tool-bar {
    padding: 7px 10px;
  }

  .tool-host {
    padding: 8px;
  }

  .tool-card-body {
    padding: 10px;
  }

  .section-title {
    margin: 9px 0 6px;
  }

  .preview-panel,
  .advanced {
    margin-top: 9px;
  }

  .action-bar {
    padding: 8px 10px;
  }
}

@media (max-height: 540px) {
  .app-header {
    display: none;
  }

  .tool-title-row {
    margin-bottom: 8px;
  }
}