:root {
  font-family: 'Noto Sans JP', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: #182026;
  background: #eff3f7;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 16px;
  line-height: 1.5;
}

.app {
  max-width: 1120px;
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: end;
  margin-bottom: 16px;
}

.eyebrow {
  margin: 0 0 6px;
  color: #48627d;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
}

.lead,
.panel-heading p,
.deploy-note {
  margin: 0;
  color: #4c5d6f;
}

.deploy-note {
  max-width: 320px;
  padding: 10px 12px;
  border: 1px solid #d6e0ea;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.92rem;
}

.panel {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid #d8e0e7;
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 16px;
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.panel h2 {
  margin: 0;
  font-size: 1.05rem;
}

.input-grid,
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

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

.field.checkbox {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
}

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

input,
select,
textarea {
  width: 100%;
  border: 1px solid #b8c5d1;
  border-radius: 10px;
  padding: 10px 12px;
  background: #fff;
  color: inherit;
}

textarea {
  min-height: 16rem;
  resize: vertical;
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 11px 15px;
  cursor: pointer;
  background: #1f6feb;
  color: #fff;
  font-weight: 700;
}

button:last-child {
  background: #2c974b;
}

.preview-frame {
  overflow-x: auto;
  padding: 4px;
  border: 1px solid #dde5ed;
  border-radius: 12px;
  background: linear-gradient(180deg, #f9fbfd, #f4f7fb);
}

.preview canvas {
  display: block;
  width: 100%;
  min-width: 640px;
  max-width: 960px;
  border: 1px solid #ced8e1;
  border-radius: 8px;
  background: #fff;
}

.current-font output {
  border: 1px solid #b8c5d1;
  border-radius: 10px;
  padding: 10px 12px;
  background: #f8fbff;
  min-height: 44px;
  display: flex;
  align-items: center;
  font-weight: 600;
}

.format-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.format-btn {
  background: #dbe7f6;
  color: #1f2a36;
  font-weight: 600;
}

.format-btn.active {
  background: #1f6feb;
  color: #fff;
}

.format-hint {
  color: #4b5563;
}

@media (max-width: 720px) {
  body {
    padding: 12px;
  }

  .hero,
  .panel-heading {
    grid-template-columns: 1fr;
    display: grid;
    align-items: start;
  }

  .deploy-note {
    max-width: none;
  }

  .panel {
    padding: 14px;
    border-radius: 12px;
  }

  .input-grid,
  .settings-grid {
    grid-template-columns: 1fr;
  }

  .field.checkbox {
    margin-top: 4px;
  }

  .actions {
    flex-direction: column;
  }

  .actions button {
    width: 100%;
  }

  .preview canvas {
    min-width: 560px;
  }
}