:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --text: #172033;
  --muted: #667085;
  --border: #d8e0ea;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-soft: #eaf1ff;
  --danger: #c62828;
  --danger-soft: #fff0f0;
  --warning: #8a5a00;
  --warning-soft: #fff8df;
  --success: #176b3a;
  --success-soft: #eaf8ef;
  --cloud: #5b4bb7;
  --cloud-soft: #f2efff;
  --focus: rgba(37, 99, 235, 0.24);
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-width: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.7;
  transition: background-color 0.2s ease, color 0.2s ease;
}

body.dark {
  --bg: #0f172a;
  --surface: #172033;
  --surface-soft: #111a2c;
  --text: #f3f6fb;
  --muted: #aeb9ca;
  --border: #344258;
  --primary: #6ea8ff;
  --primary-hover: #8bb9ff;
  --primary-soft: #20385f;
  --danger: #ff9a9a;
  --danger-soft: #3b1f24;
  --warning: #ffd57a;
  --warning-soft: #3a311d;
  --success: #9de1b4;
  --success-soft: #1b3326;
  --cloud: #c4b9ff;
  --cloud-soft: #2a2546;
  --focus: rgba(110, 168, 255, 0.28);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.24);
}

button,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.header-inner,
.page-shell,
.site-footer {
  width: min(1240px, calc(100% - 32px));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0 24px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--primary);
  font-size: 0.86rem;
  font-weight: 700;
}

h1,
h2,
h3,
p,
pre,
span,
strong {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  line-height: 1.25;
}

.lead {
  max-width: 820px;
  margin: 10px 0 0;
  color: var(--muted);
}

.theme-toggle,
.primary-button,
.secondary-button,
.ghost-button {
  min-height: 44px;
  border-radius: 10px;
  border: 1px solid transparent;
  padding: 10px 16px;
  font-weight: 700;
  transition: background-color 0.16s ease, border-color 0.16s ease, transform 0.08s ease;
}

.theme-toggle:active,
.primary-button:active,
.secondary-button:active,
.ghost-button:active {
  transform: translateY(1px);
}

.theme-toggle {
  flex: 0 0 auto;
  background: var(--surface-soft);
  color: var(--text);
  border-color: var(--border);
}

.theme-toggle:hover,
.ghost-button:hover {
  border-color: var(--primary);
}

.page-shell {
  padding: 28px 0 56px;
}

.tool-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.6fr);
  gap: 24px;
  align-items: start;
}

.panel,
.content-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel {
  padding: 22px;
  min-width: 0;
}

.panel-heading,
.result-topbar {
  margin-bottom: 18px;
}

.panel-heading h2,
.result-topbar h2,
.content-section h2 {
  margin: 0;
  line-height: 1.35;
}

.panel-heading p,
.result-status {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.input-label {
  display: block;
  margin-bottom: 7px;
  font-weight: 700;
}

textarea {
  width: 100%;
  min-width: 0;
  resize: vertical;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--surface-soft);
  color: var(--text);
  padding: 14px;
  outline: none;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.93rem;
  line-height: 1.6;
}

textarea:focus,
button:focus-visible,
summary:focus-visible {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--focus);
  outline: none;
}

.field-help,
.field-error {
  margin: 6px 0 0;
  font-size: 0.82rem;
  line-height: 1.5;
}

.field-help {
  color: var(--muted);
}

.field-error {
  min-height: 1.2em;
  color: var(--danger);
  font-weight: 700;
}

.input-actions,
.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

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

body.dark .primary-button {
  color: #0f172a;
}

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

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

.ghost-button {
  background: var(--surface-soft);
  color: var(--text);
  border-color: var(--border);
}

.notice-box,
.important-note {
  margin-top: 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  padding: 14px;
}

.notice-box p,
.important-note p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.summary-card {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--surface-soft);
  padding: 12px;
}

.summary-card span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
}

.summary-card strong {
  display: block;
  margin-top: 3px;
  font-size: 1.3rem;
}

.summary-card.success {
  border-color: color-mix(in srgb, var(--success) 35%, var(--border));
}

.summary-card.danger {
  border-color: color-mix(in srgb, var(--danger) 35%, var(--border));
}

.summary-card.warning {
  border-color: color-mix(in srgb, var(--warning) 35%, var(--border));
}

.global-message {
  display: none;
  margin: 0 0 14px;
  border-radius: 10px;
  padding: 11px 13px;
  font-weight: 700;
}

.global-message.is-visible {
  display: block;
}

.global-message.info {
  background: var(--primary-soft);
  color: var(--primary);
  border: 1px solid var(--primary);
}

.global-message.error {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid var(--danger);
}

.copy-status {
  align-self: center;
  min-height: 1.5em;
  color: var(--success);
  font-size: 0.9rem;
  font-weight: 700;
}

.copy-status.is-error {
  color: var(--danger);
}

.result-list {
  margin-top: 16px;
  display: grid;
  gap: 12px;
}

.empty-state {
  border: 1px dashed var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  color: var(--muted);
  padding: 28px 16px;
  text-align: center;
}

.result-item {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: var(--surface-soft);
  padding: 15px;
}

.result-item.status-error {
  border-left: 5px solid var(--danger);
}

.result-item.status-warning {
  border-left: 5px solid var(--warning);
}

.result-item.status-cloud {
  border-left: 5px solid var(--cloud);
}

.result-item.status-ok {
  border-left: 5px solid var(--success);
}

.result-item-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.result-line-number {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.status-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  border-radius: 999px;
  padding: 3px 9px;
  font-size: 0.75rem;
  font-weight: 800;
}

.badge.error {
  background: var(--danger-soft);
  color: var(--danger);
}

.badge.warning {
  background: var(--warning-soft);
  color: var(--warning);
}

.badge.cloud {
  background: var(--cloud-soft);
  color: var(--cloud);
}

.badge.ok {
  background: var(--success-soft);
  color: var(--success);
}

.filename-block,
.suggestion-block {
  display: grid;
  gap: 5px;
  margin-top: 10px;
}

.block-label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.filename-value {
  width: 100%;
  min-width: 0;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  padding: 9px 10px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.86rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.issue-list {
  margin: 10px 0 0;
  padding-left: 20px;
}

.issue-list li {
  margin-top: 4px;
  font-size: 0.9rem;
}

.manual-note {
  margin: 10px 0 0;
  color: var(--danger);
  font-size: 0.86rem;
  font-weight: 800;
}

.manual-note.manual-ok {
  color: var(--success);
}

.content-section {
  margin-top: 28px;
  padding: 26px;
}

.content-section > p {
  margin: 10px 0 0;
  color: var(--muted);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.info-grid article {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  padding: 16px;
}

.info-grid h3 {
  margin: 0;
  font-size: 1rem;
}

.info-grid p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 0.93rem;
}

.faq-section details {
  border-top: 1px solid var(--border);
  padding: 14px 0;
}

.faq-section details:first-of-type {
  margin-top: 16px;
}

.faq-section summary {
  cursor: pointer;
  font-weight: 700;
}

.faq-section details p {
  margin: 9px 0 0;
  color: var(--muted);
}

.site-footer {
  padding: 0 0 28px;
  color: var(--muted);
  text-align: center;
  font-size: 0.86rem;
}

@media (max-width: 980px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }

  .summary-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .header-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .theme-toggle {
    width: 100%;
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .status-badges {
    justify-content: flex-start;
  }
}

@media (max-width: 600px) {
  .header-inner,
  .page-shell,
  .site-footer {
    width: min(100% - 22px, 1240px);
  }

  .header-inner {
    gap: 16px;
    padding: 22px 0 20px;
  }

  .page-shell {
    padding-top: 18px;
  }

  .panel,
  .content-section {
    padding: 18px;
    border-radius: 13px;
  }

  .input-actions,
  .result-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .input-actions button,
  .result-actions button {
    width: 100%;
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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