/* =========================
  リセット & ベース
========================= */
* {
  box-sizing: border-box;
}

:root {
  --bg: #eef3f9;
  --bg-accent: linear-gradient(180deg, #f7faff 0%, #eef3f9 100%);
  --surface: #ffffff;
  --surface-soft: #f7f9fc;
  --surface-muted: #f2f5f9;
  --border: #dbe4ef;
  --border-strong: #c6d4e5;
  --text: #1f2937;
  --text-subtle: #607086;
  --text-soft: #7b8aa0;
  --primary: #4a90e2;
  --primary-dark: #3276c7;
  --primary-soft: #e8f2ff;
  --danger-soft: #fff2f1;
  --shadow-sm: 0 6px 18px rgba(41, 72, 152, 0.08);
  --shadow-md: 0 14px 36px rgba(41, 72, 152, 0.12);
  --shadow-lg: 0 24px 48px rgba(41, 72, 152, 0.16);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-accent);
  color: var(--text);
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
}

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

.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  left: -9999px;
}

/* =========================
  レイアウト
========================= */
.app-shell {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 16px 40px;
}

.app-shell--mobile-app {
  padding-bottom: 48px;
}

.app-header {
  margin-bottom: 18px;
}

.app-header--sticky {
  position: sticky;
  top: 0;
  z-index: 20;
  padding-top: 6px;
  background: linear-gradient(
    180deg,
    rgba(238, 243, 249, 0.95) 0%,
    rgba(238, 243, 249, 0.82) 78%,
    rgba(238, 243, 249, 0) 100%
  );
  backdrop-filter: blur(10px);
}

.app-header__inner {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 14px;
  border: 1px solid rgba(219, 228, 239, 0.9);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-sm);
}

.app-header__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.app-header__brand {
  min-width: 0;
}

.app-header__brand h1,
.app-header__inner h1 {
  margin: 0;
  font-size: 24px;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.app-header__eyebrow {
  margin: 0 0 4px;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.app-header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.app-header__actions--collapsible {
  width: 100%;
}

.language-switcher {
  min-width: 112px;
}

/* ヘッダー折りたたみボタン */
.header-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 42px;
  height: 42px;
  padding: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.18s ease, border-color 0.18s ease, transform 0.15s ease;
}

.header-menu-toggle:hover {
  background: var(--surface-soft);
  border-color: var(--border-strong);
}

.header-menu-toggle:active {
  transform: scale(0.97);
}

.header-menu-toggle__line {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.header-menu-toggle[aria-expanded="true"] .header-menu-toggle__line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.header-menu-toggle[aria-expanded="true"] .header-menu-toggle__line:nth-child(2) {
  opacity: 0;
}

.header-menu-toggle[aria-expanded="true"] .header-menu-toggle__line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.app-main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.app-main--cards {
  gap: 18px;
}

/* =========================
  パネル / カード
========================= */
.panel {
  background: var(--surface);
  border: 1px solid rgba(219, 228, 239, 0.95);
  border-radius: 20px;
  padding: 16px;
  box-shadow: var(--shadow-sm);
}

.panel--app,
.app-card {
  border-radius: 24px;
  box-shadow: var(--shadow-md);
}

.app-card {
  overflow: hidden;
}

.app-card__header {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}

.app-card__eyebrow {
  margin: 0;
  font-size: 11px;
  line-height: 1;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-title {
  margin: 0;
  font-size: 19px;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

/* =========================
  フォーム
========================= */
.critique-form {
  display: grid;
  gap: 16px;
}

.form-group {
  margin: 0;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 700;
}

.form-group__label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 700;
}

input[type="file"],
select {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

input[type="file"]:focus,
select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(74, 144, 226, 0.14);
}

.form-group--toggle {
  padding: 6px 0 2px;
}

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

.form-actions {
  margin-top: 4px;
}

.app-form-actions {
  position: sticky;
  bottom: 10px;
  z-index: 10;
  padding-top: 6px;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.86) 28%,
    rgba(255, 255, 255, 0.96) 100%
  );
}

.primary-button {
  width: 100%;
  min-height: 52px;
  padding: 14px 18px;
  background: linear-gradient(180deg, #5da2f3 0%, #4a90e2 100%);
  border: none;
  color: #fff;
  font-size: 16px;
  font-weight: 800;
  border-radius: 16px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s ease;
  box-shadow: 0 12px 24px rgba(74, 144, 226, 0.28);
}

.primary-button:hover {
  filter: brightness(1.02);
  transform: translateY(-1px);
}

.primary-button:active {
  transform: translateY(1px) scale(0.99);
}

.primary-button:disabled {
  background: #9eb8da;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.primary-button--cta {
  min-height: 56px;
  font-size: 17px;
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 14px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 14px;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, transform 0.15s ease;
}

.secondary-button:hover {
  background: var(--surface-soft);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.secondary-button:active {
  transform: translateY(1px);
}

.form-message {
  min-height: 22px;
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-subtle);
}

.field-hint {
  margin: 8px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-soft);
}

.inline-note {
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-soft);
  font-weight: 500;
  margin-left: 6px;
}

/* =========================
  ファイル入力UI
========================= */
.file-input-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px;
  border-radius: 16px;
  background: var(--surface-soft);
  border: 1px dashed var(--border-strong);
}

.file-input-name {
  flex: 1;
  min-width: 160px;
  font-size: 14px;
  color: var(--text-subtle);
  line-height: 1.5;
  word-break: break-all;
}

/* =========================
  制作時間ボタン
========================= */
.duration-button-group {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

.duration-button {
  min-height: 46px;
  padding: 10px 8px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.18s ease;
}

.duration-button:hover {
  background: var(--primary-soft);
  border-color: #a9c3e8;
}

.duration-button--active {
  background: linear-gradient(180deg, #5da2f3 0%, #4a90e2 100%);
  border-color: var(--primary);
  color: #fff;
  transform: scale(1.03);
  box-shadow: 0 10px 20px rgba(74, 144, 226, 0.25);
}

.duration-button:active {
  transform: scale(0.97);
}

.duration-button:focus {
  outline: none;
  box-shadow: 0 0 0 4px rgba(74, 144, 226, 0.14);
}

/* =========================
  トグル
========================= */
.switch {
  position: relative;
  display: inline-block;
  width: 54px;
  height: 30px;
  flex-shrink: 0;
}

.switch input {
  display: none;
}

.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: #cad5e3;
  border-radius: 999px;
  transition: 0.2s;
}

.slider::before {
  content: "";
  position: absolute;
  width: 24px;
  height: 24px;
  left: 3px;
  top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: 0.2s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
}

.switch input:checked + .slider {
  background-color: var(--primary);
}

.switch input:checked + .slider::before {
  transform: translateX(24px);
}

/* =========================
  画像比較
========================= */
.compare-card-grid,
.compare-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.compare-item,
.compare-column {
  display: grid;
  gap: 10px;
}

.compare-item__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.compare-item__title,
.compare-title {
  margin: 0;
  font-size: 15px;
  font-weight: 800;
  color: var(--text);
}

.image-frame,
.preview-box,
.redline-box {
  display: grid;
  place-items: center;
  min-height: 240px;
  padding: 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, #f9fbfe 0%, #f3f7fb 100%);
  overflow: hidden;
}

.result-image,
.preview-image,
.redline-image {
  width: 100%;
  max-height: 520px;
  object-fit: contain;
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
}

.placeholder-text {
  margin: 0;
  text-align: center;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-soft);
}

/* =========================
  ローディング
========================= */
.loading-panel {
  border-style: solid;
}

.loading-state {
  display: grid;
  justify-items: center;
  gap: 14px;
  padding: 12px 4px 4px;
}

.loading-spinner {
  width: 42px;
  height: 42px;
  border: 4px solid rgba(74, 144, 226, 0.16);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.85s linear infinite;
}

.loading-text {
  margin: 0;
  text-align: center;
  font-size: 14px;
  color: var(--text-subtle);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* =========================
  結果表示
========================= */
.result-panel {
  display: grid;
  gap: 14px;
}

.result-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.result-card {
  padding: 16px;
  border-radius: 18px;
  background: var(--surface-soft);
  border: 1px solid rgba(219, 228, 239, 0.9);
}

.result-card__title {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.4;
  font-weight: 800;
  color: var(--text);
}

.result-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-subtle);
  white-space: pre-wrap;
}

.result-list {
  margin: 0;
  padding-left: 20px;
  color: var(--text-subtle);
}

.result-list li + li {
  margin-top: 8px;
}

/* =========================
  履歴
========================= */
.history-panel {
  display: grid;
  gap: 14px;
}

.history-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.history-list {
  display: grid;
  gap: 12px;
}

.history-item-row {
  display: block;
}

.history-item {
  padding: 14px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  box-shadow: 0 4px 10px rgba(41, 72, 152, 0.04);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease,
    transform 0.18s ease;
}

.history-item:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
}

.history-item--active {
  border-color: var(--primary);
  background: var(--primary-soft);
  box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.14);
}

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

.history-item__title {
  margin: 0;
  font-size: 15px;
  font-weight: 800;
}

.history-item__meta {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--text-soft);
}

.history-item__summary {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-subtle);
}

.history-item__actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

/* =========================
  診断ページ
========================= */
.diagnosis-question-group {
  margin: 0;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface-soft);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.diagnosis-question-group + .diagnosis-question-group {
  margin-top: 14px;
}

.diagnosis-question-group:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.diagnosis-question-group legend {
  padding: 0 4px;
}

.diagnosis-question-group label {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 10px;
  font-weight: 500;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 10px;
  transition: background 0.15s ease;
}

.diagnosis-question-group label:hover {
  background: var(--primary-soft);
}

.diagnosis-question-group input[type="radio"] {
  margin-top: 4px;
}

.diagnosis-question-group input[type="radio"]:checked + span {
  font-weight: 700;
  color: var(--primary);
}

#diagnosis-result {
  display: grid;
  gap: 12px;
  border: 2px solid var(--primary);
  background: linear-gradient(
    180deg,
    rgba(74, 144, 226, 0.05) 0%,
    rgba(74, 144, 226, 0.02) 100%
  );
}

#result-type[data-i18n="diagnosisNotYet"] {
  color: var(--text-soft);
}

#use-diagnosis-result-button {
  margin-top: 8px;
  box-shadow: 0 14px 28px rgba(74, 144, 226, 0.28);
}

.type-reference-grid,
.category-legend-grid {
  display: grid;
  gap: 10px;
}

#category-legend li,
#type-reference li {
  padding: 6px 4px;
  border-bottom: 1px dashed var(--border);
}

/* =========================
  診断ステップUI
========================= */
.diagnosis-progress-card {
  margin-bottom: 14px;
  padding: 14px;
  border-radius: 18px;
  background: linear-gradient(180deg, #f7fbff 0%, #eef5ff 100%);
  border: 1px solid rgba(74, 144, 226, 0.18);
}

.diagnosis-progress-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.diagnosis-progress-card__label {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
}

.diagnosis-progress-card__count {
  font-size: 14px;
  font-weight: 800;
  color: var(--text);
}

.diagnosis-progress-track {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(74, 144, 226, 0.12);
  overflow: hidden;
}

.diagnosis-progress-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #5da2f3 0%, #4a90e2 100%);
  transition: width 0.24s ease;
}

.diagnosis-step-card {
  display: grid;
  gap: 12px;
}

.diagnosis-step-actions {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 10px;
  align-items: center;
}

.diagnosis-step-actions .secondary-button,
.diagnosis-step-actions .primary-button {
  width: 100%;
}

.diagnosis-step-actions .secondary-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.diagnosis-step-actions .secondary-button:disabled:hover {
  background: #fff;
  border-color: var(--border);
}

/* =========================
  診断結果 強調
========================= */
.diagnosis-result-card {
  border: 2px solid var(--primary);
  background: linear-gradient(
    180deg,
    rgba(74, 144, 226, 0.08) 0%,
    rgba(74, 144, 226, 0.03) 100%
  );
  box-shadow: var(--shadow-lg);
}

.diagnosis-result-card__primary {
  text-align: center;
  padding: 20px;
  border-radius: 20px;
  background: linear-gradient(180deg, #ffffff 0%, #f4f8ff 100%);
  border: 1px solid rgba(74, 144, 226, 0.2);
}

.diagnosis-result-card__title-main {
  font-size: 14px;
  color: var(--text-soft);
  letter-spacing: 0.08em;
}

.diagnosis-result-card__type {
  margin-top: 10px;
  font-size: 28px;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.diagnosis-result-card__reason-wrap {
  padding: 16px;
  border-radius: 18px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
}

.diagnosis-result-card__title-sub {
  font-size: 14px;
  color: var(--text-subtle);
}

.diagnosis-result-card__reason {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text);
}

/* =========================
  補助クラス
========================= */
.compare-panel,
.input-panel,
.result-panel,
.history-panel {
  scroll-margin-top: 90px;
}

/* =========================
  タブレット以上
========================= */
@media (min-width: 768px) {
  .app-shell {
    padding: 20px 20px 48px;
  }

  .app-header__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px;
  }

  .app-header__top {
    flex: 1;
  }

  .app-header__brand h1,
  .app-header__inner h1 {
    font-size: 28px;
  }

  .panel {
    padding: 20px;
  }

  .compare-card-grid,
  .compare-grid {
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }

  .result-card-grid {
    grid-template-columns: 1fr 1fr;
  }

  .image-frame,
  .preview-box,
  .redline-box {
    min-height: 320px;
  }

  .app-form-actions {
    position: static;
    background: transparent;
    padding-top: 0;
  }

  .diagnosis-step-actions {
    grid-template-columns: 180px minmax(240px, 1fr);
    justify-content: end;
  }

  .diagnosis-result-card__type {
    font-size: 32px;
  }

  .diagnosis-result-card__primary {
    padding: 26px;
  }

  .app-header__actions--collapsible {
    width: auto;
  }

  .header-menu-toggle {
    display: none !important;
  }
}

/* =========================
  PC大画面
========================= */
@media (min-width: 1024px) {
  .app-shell {
    padding-left: 24px;
    padding-right: 24px;
  }

  .app-main--cards {
    gap: 20px;
  }

  .panel--app,
  .app-card {
    border-radius: 26px;
  }

  .input-panel {
    padding: 22px;
  }

  .compare-card-grid,
  .compare-grid {
    gap: 18px;
  }

  .image-frame,
  .preview-box,
  .redline-box {
    min-height: 360px;
    padding: 18px;
  }

  .primary-button--cta {
    min-height: 58px;
    font-size: 18px;
  }
}

/* =========================
  スマホ最終調整
========================= */
@media (max-width: 640px) {
  .app-shell {
    padding: 10px 10px 28px;
  }

  .app-shell--mobile-app {
    padding-bottom: 32px;
  }

  .app-header {
    margin-bottom: 12px;
  }

  .app-header--sticky {
    top: 0;
    padding-top: 0;
    backdrop-filter: blur(8px);
  }

  .app-header__inner {
    gap: 10px;
    padding: 10px 12px;
    border-radius: 18px;
  }

  .app-header__top {
    gap: 8px;
  }

  .app-header__brand h1,
  .app-header__inner h1 {
    font-size: 21px;
    line-height: 1.2;
  }

  .app-header__eyebrow {
    font-size: 10px;
    margin-bottom: 3px;
  }

  .header-menu-toggle {
    display: inline-flex;
  }

  .app-header__actions {
    gap: 6px;
  }

  .app-header__actions--collapsible {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: 4px;
  }

  .app-header__actions--collapsible.is-open {
    display: flex;
  }

  .app-header__actions--collapsible .secondary-button,
  .app-header__actions--collapsible .language-switcher,
  .app-header__actions--collapsible select {
    width: 100%;
  }

  .app-main,
  .app-main--cards {
    gap: 12px;
  }

  .panel {
    padding: 14px;
    border-radius: 18px;
  }

  .panel--app,
  .app-card {
    border-radius: 20px;
  }

  .app-card__header {
    margin-bottom: 10px;
  }

  .section-title {
    font-size: 17px;
  }

  .critique-form {
    gap: 14px;
  }

  .form-group label,
  .form-group__label {
    margin-bottom: 6px;
    font-size: 13px;
  }

  input[type="file"],
  select {
    min-height: 46px;
    padding: 11px 12px;
    font-size: 14px;
  }

  .file-input-row {
    gap: 10px;
    padding: 10px;
    border-radius: 14px;
  }

  .file-input-row .secondary-button {
    width: 100%;
  }

  .file-input-name {
    min-width: 100%;
    font-size: 13px;
  }

  .duration-button-group {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }

  .duration-button {
    min-height: 44px;
    font-size: 13px;
    padding: 10px 6px;
  }

  .toggle-row {
    align-items: flex-start;
  }

  .toggle-row #redline-label {
    flex: 1;
  }

  .inline-note {
    display: inline-block;
    margin-left: 0;
    margin-top: 4px;
  }

  .app-form-actions {
    position: sticky;
    bottom: 8px;
    padding-top: 8px;
  }

  .primary-button,
  .primary-button--cta {
    min-height: 54px;
    font-size: 16px;
    border-radius: 15px;
  }

  .secondary-button {
    min-height: 42px;
    padding: 10px 12px;
  }

  .compare-card-grid,
  .compare-grid,
  .result-card-grid {
    gap: 12px;
  }

  .compare-item,
  .compare-column {
    gap: 8px;
  }

  .image-frame,
  .preview-box,
  .redline-box {
    min-height: 220px;
    padding: 10px;
    border-radius: 16px;
  }

  .result-image,
  .preview-image,
  .redline-image {
    max-height: 340px;
    border-radius: 12px;
  }

  .result-card {
    padding: 14px;
    border-radius: 16px;
  }

  .result-card__title {
    margin-bottom: 8px;
    font-size: 14px;
  }

  .result-text,
  .result-list,
  .placeholder-text {
    font-size: 13px;
  }

  .history-panel__header {
    align-items: stretch;
  }

  .history-panel__header .secondary-button {
    width: 100%;
  }

  .history-item {
    padding: 12px;
    border-radius: 16px;
  }

  .history-item__header {
    flex-direction: column;
    gap: 8px;
    margin-bottom: 8px;
  }

  .history-item__actions {
    flex-direction: column;
    gap: 8px;
  }

  .history-item__actions .secondary-button,
  .history-item__actions .primary-button {
    width: 100%;
  }

  .loading-state {
    gap: 10px;
    padding-top: 8px;
  }

  .loading-spinner {
    width: 36px;
    height: 36px;
  }

  .diagnosis-question-group {
    padding: 12px;
    border-radius: 16px;
  }

  .diagnosis-question-group label {
    font-size: 14px;
    padding: 8px;
  }

  .diagnosis-progress-card {
    padding: 12px;
    border-radius: 16px;
    margin-bottom: 12px;
  }

  .diagnosis-progress-card__meta {
    margin-bottom: 8px;
  }

  .diagnosis-step-actions {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .diagnosis-step-actions .secondary-button {
    order: 2;
  }

  .diagnosis-step-actions .primary-button {
    order: 1;
  }

  .diagnosis-result-card__type {
    font-size: 24px;
  }

  .diagnosis-result-card__reason {
    font-size: 14px;
    line-height: 1.8;
  }

  #use-diagnosis-result-button {
    min-height: 54px;
  }

  #category-legend li,
  #type-reference li {
    padding: 8px 2px;
  }
}

/* =========================
  小さい画面向け微調整
========================= */
@media (max-width: 480px) {
  .app-shell {
    padding: 8px 8px 24px;
  }

  .app-header__inner {
    padding: 10px;
    border-radius: 16px;
  }

  .app-header__brand h1,
  .app-header__inner h1 {
    font-size: 20px;
  }

  .panel {
    padding: 12px;
    border-radius: 16px;
  }

  .panel--app,
  .app-card {
    border-radius: 18px;
  }

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

  .image-frame,
  .preview-box,
  .redline-box {
    min-height: 200px;
  }

  .result-image,
  .preview-image,
  .redline-image {
    max-height: 280px;
  }

  .form-message {
    font-size: 12px;
  }
}