:root {
  --bg: #f4f1ea;
  --ink: #13232f;
  --muted: #5f6b74;
  --panel: rgba(255, 252, 247, 0.92);
  --border: rgba(19, 35, 47, 0.12);
  --primary: #10324a;
  --primary-soft: #d8e8f1;
  --danger: #b1362c;
  --danger-soft: #f9dfda;
  --warning: #c47f17;
  --warning-soft: #f9e8c4;
  --safe: #22734b;
  --safe-soft: #ddeee5;
  --shadow: 0 18px 48px rgba(16, 50, 74, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'M PLUS 1p', 'Noto Sans JP', sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(16, 50, 74, 0.12), transparent 30%),
    radial-gradient(circle at bottom left, rgba(177, 54, 44, 0.12), transparent 28%),
    var(--bg);
}

.sms-shell {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: calc(20px + env(safe-area-inset-top)) 16px calc(32px + env(safe-area-inset-bottom));
}

.hero-card,
.steps-card,
.switch-card,
.compose-card,
.result-card,
.panel-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.hero-card,
.steps-card,
.switch-card,
.compose-card,
.result-card {
  padding: 22px;
  margin-bottom: 18px;
}

.switch-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(216, 232, 241, 0.82));
}

.switch-title {
  margin: 0 0 8px;
  font-size: 20px;
  line-height: 1.35;
}

.switch-actions {
  flex-shrink: 0;
}

.switch-link-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 13px 18px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero-card h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.18;
}

.hero-copy,
.panel-note,
.shortcut-box p,
.step-item p,
.form-feedback,
.result-summary,
.loading-copy {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.ghost-link {
  display: inline-flex;
  margin-top: 16px;
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
}

.steps-card {
  display: grid;
  gap: 14px;
}

.step-item {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  align-items: start;
}

.step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 800;
}

.step-item h2,
.compose-card h2,
.shortcut-box h3,
.panel-card h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.field-block {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.field-block label {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
}

.field-block input,
.field-block textarea {
  width: 100%;
  border: 1px solid rgba(19, 35, 47, 0.18);
  border-radius: 16px;
  background: #fff;
  padding: 14px 16px;
  font: inherit;
  color: var(--ink);
}

.field-block textarea {
  min-height: 220px;
  resize: vertical;
}

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

.primary-btn,
.secondary-btn,
.danger-btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 13px 18px;
  font: inherit;
  font-weight: 700;
}

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

.secondary-btn {
  background: #e7ecef;
  color: var(--ink);
}

.danger-btn {
  background: var(--danger);
  color: #fff;
}

.shortcut-box {
  margin-top: 16px;
  padding: 16px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(16, 50, 74, 0.07), rgba(16, 50, 74, 0.02));
}

.hidden {
  display: none;
}

.loading-chip,
.verdict-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 112px;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.loading-chip {
  background: var(--primary-soft);
  color: var(--primary);
}

.result-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
  margin-bottom: 12px;
}

.result-label,
.meta-label {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}

.meta-grid,
.split-grid {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.meta-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.meta-card,
.panel-card {
  padding: 16px;
}

.meta-card {
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--border);
}

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

.stack-item {
  border-radius: 16px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border);
}

.stack-item h4 {
  margin: 0 0 6px;
  font-size: 15px;
}

.stack-item p {
  margin: 0;
  line-height: 1.6;
  color: var(--muted);
}

.stack-item .mini-label {
  display: inline-flex;
  margin-bottom: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.severity-high .mini-label,
.verdict-danger {
  background: var(--danger-soft);
  color: var(--danger);
}

.severity-medium .mini-label,
.verdict-warning {
  background: var(--warning-soft);
  color: var(--warning);
}

.severity-low .mini-label,
.verdict-safe {
  background: var(--safe-soft);
  color: var(--safe);
}

.disabled-note {
  text-align: center;
}

@media (min-width: 680px) {
  .split-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 679px) {
  .switch-card {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .result-header {
    flex-direction: column;
  }
}