/* =============================================
   AfiX デザインシステム — Apple HIG ベース
   design-system.css
   ============================================= */

/* =============================================
   フォント
   ============================================= */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&display=swap');

/* =============================================
   CSS変数（Apple HIG カラートークン）
   ============================================= */
:root {
  /* Apple System Colors */
  --color-primary:        #007AFF;
  --color-primary-dark:   #0060DF;
  --color-primary-light:  #E5F0FF;
  --color-primary-tint:   rgba(0, 122, 255, 0.12);

  /* Text */
  --color-text:           #1C1C1E;
  --color-text-secondary: #8E8E93;
  --color-text-tertiary:  #C7C7CC;

  /* Backgrounds (Apple Grouped System) */
  --color-bg:             #F2F2F7;
  --color-surface:        #FFFFFF;
  --color-surface-raised: #F2F2F7;
  --color-surface-overlay:#FFFFFF;

  /* Separators */
  --color-border:         #D1D1D6;
  --color-border-strong:  #C7C7CC;
  --color-separator:      rgba(60, 60, 67, 0.18);

  /* Semantic */
  --color-error:          #FF3B30;
  --color-error-bg:       rgba(255, 59, 48, 0.08);
  --color-success:        #34C759;
  --color-success-bg:     rgba(52, 199, 89, 0.08);
  --color-warning:        #FF9500;
  --color-warning-bg:     rgba(255, 149, 0, 0.1);
  --color-warning-border: rgba(255, 149, 0, 0.3);

  /* Interactive */
  --color-fill:           rgba(120, 120, 128, 0.12);
  --color-fill-hover:     rgba(120, 120, 128, 0.2);
  --color-hover-bg:       rgba(0, 0, 0, 0.04);
  --color-overlay:        rgba(255, 255, 255, 0.95);

  /* Ghost Buttons */
  --color-btn-ghost-bg:   rgba(120, 120, 128, 0.12);
  --color-btn-ghost-hover:rgba(120, 120, 128, 0.2);

  /* Shape */
  --radius-sm:    6px;
  --radius:       10px;
  --radius-lg:    14px;
  --radius-xl:    20px;
  --radius-round: 999px;

  /* Spacing (広め) */
  --space-xs:   6px;
  --space-sm:   12px;
  --space-md:   20px;
  --space-lg:   32px;
  --space-xl:   48px;
  --space-2xl:  72px;

  /* Grid */
  --grid-max:   1200px;
  --grid-gap:   24px;

  /* Shadows (Apple-style) */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.06);

  /* Sidebar */
  --sidebar-width: 240px;
}

/* =============================================
   ダークモード
   ============================================= */
[data-theme="dark"] {
  --color-primary:        #0A84FF;
  --color-primary-dark:   #409CFF;
  --color-primary-light:  #1C2E40;
  --color-primary-tint:   rgba(10, 132, 255, 0.15);

  --color-text:           #FFFFFF;
  --color-text-secondary: #8E8E93;
  --color-text-tertiary:  #48484A;

  --color-bg:             #000000;
  --color-surface:        #1C1C1E;
  --color-surface-raised: #2C2C2E;
  --color-surface-overlay:#1C1C1E;

  --color-border:         #38383A;
  --color-border-strong:  #48484A;
  --color-separator:      rgba(84, 84, 88, 0.6);

  --color-error:          #FF453A;
  --color-error-bg:       rgba(255, 69, 58, 0.12);
  --color-success:        #30D158;
  --color-success-bg:     rgba(48, 209, 88, 0.12);
  --color-warning:        #FF9F0A;
  --color-warning-bg:     rgba(255, 159, 10, 0.12);
  --color-warning-border: rgba(255, 159, 10, 0.3);

  --color-fill:           rgba(120, 120, 128, 0.2);
  --color-fill-hover:     rgba(120, 120, 128, 0.32);
  --color-hover-bg:       rgba(255, 255, 255, 0.06);
  --color-overlay:        rgba(0, 0, 0, 0.9);

  --color-btn-ghost-bg:   rgba(120, 120, 128, 0.2);
  --color-btn-ghost-hover:rgba(120, 120, 128, 0.32);

  --shadow-sm:  0 1px 4px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg:  0 8px 40px rgba(0,0,0,0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary:        #0A84FF;
    --color-primary-dark:   #409CFF;
    --color-primary-light:  #1C2E40;
    --color-primary-tint:   rgba(10, 132, 255, 0.15);

    --color-text:           #FFFFFF;
    --color-text-secondary: #8E8E93;
    --color-text-tertiary:  #48484A;

    --color-bg:             #000000;
    --color-surface:        #1C1C1E;
    --color-surface-raised: #2C2C2E;
    --color-surface-overlay:#1C1C1E;

    --color-border:         #38383A;
    --color-border-strong:  #48484A;
    --color-separator:      rgba(84, 84, 88, 0.6);

    --color-error:          #FF453A;
    --color-error-bg:       rgba(255, 69, 58, 0.12);
    --color-success:        #30D158;
    --color-success-bg:     rgba(48, 209, 88, 0.12);
    --color-warning:        #FF9F0A;
    --color-warning-bg:     rgba(255, 159, 10, 0.12);
    --color-warning-border: rgba(255, 159, 10, 0.3);

    --color-fill:           rgba(120, 120, 128, 0.2);
    --color-fill-hover:     rgba(120, 120, 128, 0.32);
    --color-hover-bg:       rgba(255, 255, 255, 0.06);
    --color-overlay:        rgba(0, 0, 0, 0.9);

    --color-btn-ghost-bg:   rgba(120, 120, 128, 0.2);
    --color-btn-ghost-hover:rgba(120, 120, 128, 0.32);

    --shadow-sm:  0 1px 4px rgba(0,0,0,0.3);
    --shadow-md:  0 4px 20px rgba(0,0,0,0.4);
    --shadow-lg:  0 8px 40px rgba(0,0,0,0.5);
  }
}

/* =============================================
   カラースキーム
   ============================================= */
html {
  color-scheme: light;
  scroll-behavior: smooth;
  height: 100%;
}

[data-theme="dark"] {
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
  }
}

/* =============================================
   リセット / ベーススタイル
   ============================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Hiragino Sans",
               "Noto Sans JP", "Yu Gothic", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  height: 100%;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body,
#nav-placeholder nav,
.card,
.card-wrap,
.modal-panel,
input,
select,
textarea,
.otp-input {
  transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  color: var(--color-primary-dark);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* =============================================
   アプリレイアウト（左サイドバー）
   ============================================= */
.app-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ---- サイドバー（左） ---- */
#nav-placeholder {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
  position: sticky;
  top: 0;
  transition: width 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              min-width 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 18px 18px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.sidebar-logo {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.sidebar-logo:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 12px 10px;
}

.sidebar-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-nav ul li a {
  display: block;
  padding: 11px 12px;
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background 0.15s ease, color 0.15s ease;
  line-height: 1.4;
}

.sidebar-nav ul li a:hover {
  background: var(--color-hover-bg);
  color: var(--color-primary);
  text-decoration: none;
}

.sidebar-nav ul li a.active {
  background: var(--color-primary-tint);
  color: var(--color-primary);
  font-weight: 600;
}

.sidebar-footer {
  padding: 14px 10px 18px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-shrink: 0;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-secondary);
  min-width: 0;
  text-decoration: none;
  border-radius: var(--radius);
  padding: 8px 10px;
  transition: background 0.15s, color 0.15s;
}

.sidebar-user:hover {
  background: var(--color-hover-bg);
  color: var(--color-text);
  text-decoration: none;
}

.sidebar-user-icon {
  font-size: 16px;
  flex-shrink: 0;
}

#sidebar-username {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
}

/* ---- メインコンテンツ（右） ---- */
.main-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-xl) var(--space-xl) var(--space-2xl);
  background: var(--color-bg);
  min-width: 0;
}

/* =============================================
   サイドバー開閉トグル
   ============================================= */
.sidebar-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  font-size: 15px;
  padding: 6px;
  border-radius: var(--radius-sm);
  line-height: 1;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}

.sidebar-toggle:hover {
  background: var(--color-hover-bg);
  color: var(--color-text);
}

/* 折りたたみ時 */
.app-layout.sidebar-collapsed #nav-placeholder {
  width: 0;
  min-width: 0;
  overflow: hidden;
  border-right: none;
}

/* 開くボタン */
.sidebar-open-btn {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 200;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  font-size: 16px;
  padding: 7px 11px;
  cursor: pointer;
  line-height: 1;
  box-shadow: var(--shadow-md);
  transition: background 0.15s;
  display: none;
}

.sidebar-open-btn:hover {
  background: var(--color-hover-bg);
}

.app-layout.sidebar-collapsed ~ .sidebar-open-btn,
.sidebar-open-btn.visible {
  display: block;
}

/* モバイル */
@media (max-width: 768px) {
  #nav-placeholder {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 150;
    height: 100vh;
    height: 100dvh; /* iOS Safari 下部URLバー対応 */
    transform: translateX(-100%);
    transition: transform 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    width: var(--sidebar-width) !important;
    min-width: var(--sidebar-width) !important;
    overflow-y: auto;
    border-right: 1px solid var(--color-border) !important;
  }

  .sidebar-footer {
    padding-bottom: max(18px, calc(14px + env(safe-area-inset-bottom)));
  }

  .app-layout:not(.sidebar-collapsed) #nav-placeholder {
    transform: translateX(0);
  }

  .app-layout.sidebar-collapsed #nav-placeholder {
    transform: translateX(-100%);
    width: var(--sidebar-width) !important;
    min-width: var(--sidebar-width) !important;
  }

  .main-content {
    padding: 20px 16px var(--space-xl);
    padding-top: 60px;
  }
}

/* バックドロップ */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 140;
}

.sidebar-backdrop.visible {
  display: block;
}

/* =============================================
   ページヘッダー
   ============================================= */
.page-header {
  margin-bottom: var(--space-lg);
}

.page-header h1 {
  margin: 0 0 4px;
}

/* =============================================
   ボタン
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 22px;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s, background 0.2s;
  text-align: center;
  text-decoration: none;
  line-height: 1.4;
  white-space: nowrap;
  -webkit-user-select: none;
  user-select: none;
}

.btn:active {
  transform: scale(0.97);
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  opacity: 1;
  text-decoration: none;
  color: #FFFFFF;
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--color-primary-tint);
  color: var(--color-primary);
}

.btn-secondary:hover {
  background: rgba(0, 122, 255, 0.18);
  text-decoration: none;
  color: var(--color-primary);
}

.btn-ghost {
  background: var(--color-btn-ghost-bg);
  color: var(--color-text);
}

.btn-ghost:hover {
  background: var(--color-btn-ghost-hover);
  text-decoration: none;
  color: var(--color-text);
}

/* ローディングスピナー */
.btn-primary .spinner {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: white;
  border-radius: 50%;
  animation: ds-spin 0.65s linear infinite;
}

.btn-primary.loading .btn-text { display: none; }
.btn-primary.loading .spinner  { display: block; }

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

/* ds-button 互換 */
.ds-button {
  appearance: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius);
  padding: 12px 22px;
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  transition: opacity 0.2s, background 0.2s;
  background: var(--color-btn-ghost-bg);
  color: var(--color-text-secondary);
}

.ds-button:hover { background: var(--color-btn-ghost-hover); }

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

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

/* 削除ボタン */
#deleteButton {
  background: var(--color-error);
  color: #FFFFFF;
}

#deleteButton:hover { opacity: 0.85; }

/* 支払い方法変更ボタン */
#changePaymentButton {
  background: var(--color-primary);
  color: #FFFFFF;
  display: none;
}

#changePaymentButton:hover { background: var(--color-primary-dark); }

/* 戻るボタン */
#backButton {
  display: block;
  margin: 28px auto 0;
  background: var(--color-btn-ghost-bg);
  color: var(--color-text-secondary);
  border: none;
  border-radius: var(--radius);
  padding: 12px 28px;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s;
}

#backButton:hover { background: var(--color-btn-ghost-hover); }

/* アクション群 */
.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: var(--space-md);
}

/* =============================================
   フォーム
   ============================================= */
.form-group {
  margin-bottom: var(--space-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
textarea,
select {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  padding: 13px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 15px;
  font-weight: 400;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="datetime-local"]:focus,
textarea:focus,
select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-tint);
}

input[readonly],
textarea[readonly] {
  background: var(--color-surface-raised);
  color: var(--color-text-secondary);
  cursor: default;
}

input[readonly]:focus,
textarea[readonly]:focus {
  border-color: var(--color-border);
  box-shadow: none;
}

input[disabled] {
  background: var(--color-surface-raised);
  color: var(--color-text-secondary);
  cursor: not-allowed;
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238E8E93' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

/* .field 形式 (setting.html 等) */
.field { margin-bottom: 0; }
.field + .field { margin-top: var(--space-md); }

.label,
.ds-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.input {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-surface);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-tint);
}

.ds-form-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* =============================================
   カード / コンテナ
   ============================================= */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 10;
}

.card-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 28px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

/* =============================================
   アラート / メッセージ
   ============================================= */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 16px;
  display: none;
}

.alert-error {
  background: var(--color-error-bg);
  color: var(--color-error);
}

.alert-success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.alert.show { display: block; }

#error {
  display: none;
  color: var(--color-error);
  font-weight: 500;
  background: var(--color-error-bg);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-top: 14px;
  font-size: 14px;
}

#error:not(:empty) { display: block; }

#message {
  text-align: center;
  margin: 16px 0;
  display: none;
  color: var(--color-success);
  font-weight: 500;
  background: var(--color-success-bg);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 14px;
}

#message:not(:empty) { display: block; }

#loading {
  text-align: center;
  color: var(--color-text-secondary);
  font-weight: 500;
  padding: 20px;
  font-size: 14px;
}

/* 注意書き */
.note {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.7;
  margin: 0 0 var(--space-md);
  color: var(--color-text);
}

.note code {
  background: var(--color-primary-tint);
  color: var(--color-primary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
}

/* エラー / 成功 メッセージ（ID別） */
#errorMessage {
  display: none;
  background: var(--color-error-bg);
  border-radius: var(--radius);
  padding: 14px 18px;
  color: var(--color-error);
  font-weight: 500;
  font-size: 14px;
  margin-bottom: 16px;
}

#successMessage {
  display: none;
  background: var(--color-success-bg);
  border-radius: var(--radius);
  padding: 14px 18px;
  color: var(--color-success);
  font-weight: 500;
  font-size: 14px;
  margin-bottom: 16px;
}

/* =============================================
   タイポグラフィ
   ============================================= */
h1 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--color-text);
  margin: 0 0 8px;
}

h2 {
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--color-text);
  margin: var(--space-lg) 0 var(--space-sm);
}

h3 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin: var(--space-md) 0 10px;
}

.lead {
  font-size: 15px;
  color: var(--color-text-secondary);
  font-weight: 400;
  margin: 0 0 var(--space-md);
  line-height: 1.6;
}

.subtitle {
  font-size: 14px;
  color: var(--color-text-secondary);
  font-weight: 400;
}

code {
  font-family: "SF Mono", "SFMono-Regular", "Consolas", monospace;
  font-size: 0.875em;
  background: var(--color-fill);
  color: var(--color-primary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

/* =============================================
   テーブル
   ============================================= */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th {
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 16px;
}

td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

tr:last-child td { border-bottom: none; }

/* =============================================
   グリッドレイアウト
   ============================================= */
.sw-grid   { display: grid; gap: var(--grid-gap); }
.sw-grid-2 { grid-template-columns: repeat(2, 1fr); }
.sw-grid-3 { grid-template-columns: repeat(3, 1fr); }
.sw-grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .sw-grid-2,
  .sw-grid-3,
  .sw-grid-4 { grid-template-columns: 1fr; }
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (max-width: 860px) {
  .form-grid { grid-template-columns: 1fr; }
}

/* =============================================
   コンテナ / レイアウト共通
   ============================================= */
main {
  max-width: 760px;
  margin: 48px auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.container {
  max-width: 900px;
  margin: 0 auto;
}

/* =============================================
   index.html — ドキュメントグリッド
   ============================================= */
.docs-container { margin-top: 0; }

.docs-container h2 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--space-md);
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

@media (max-width: 640px) {
  .docs-grid { grid-template-columns: 1fr; }
}

.doc-card {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.doc-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.doc-card .doc-title {
  font-weight: 500;
  color: var(--color-text);
  font-size: 14px;
}

.doc-card a.doc-link {
  padding: 7px 16px;
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
  transition: background 0.2s;
}

.doc-card a.doc-link:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
}

/* =============================================
   設定ページ — API認証情報カード
   ============================================= */
#apiCredentialsContainer { margin-top: 12px; }

.api-credential {
  position: relative;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  transition: border-color 0.2s;
}

.api-credential:hover { border-color: var(--color-primary); }

.api-credential label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 16px;
}

.api-credential label:first-child { margin-top: 0; }

.api-credential input {
  width: 100%;
  margin-top: 8px;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text);
  background: var(--color-surface);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.api-credential input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-tint);
}

.removeApiCredentialButton {
  position: absolute;
  top: 18px;
  right: 18px;
  background: var(--color-error-bg);
  color: var(--color-error);
  border: none;
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  cursor: pointer;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  transition: opacity 0.2s;
}

.removeApiCredentialButton:hover { opacity: 0.75; }

/* =============================================
   モーダル
   ============================================= */
#redirectModal {
  position: fixed;
  inset: 0;
  display: none;
  z-index: 50;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

#redirectModal.is-open { display: flex; }

.modal-panel {
  background: var(--color-surface-overlay);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  width: min(92vw, 620px);
  padding: 36px 32px 28px;
  text-align: center;
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.modal-sub {
  font-size: 14px;
  color: var(--color-text-secondary);
  font-weight: 400;
  margin: 0 0 24px;
}

.plan-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 24px;
  text-align: left;
}

@media (max-width: 480px) {
  .plan-grid { grid-template-columns: 1fr; }
}

.plan-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.plan-card--paid {
  border-color: var(--color-primary);
  background: var(--color-primary-tint);
  position: relative;
}

.plan-badge {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 14px;
  border-radius: var(--radius-round);
  white-space: nowrap;
}

.plan-name {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.plan-name--free { color: var(--color-text-secondary); }
.plan-name--paid { color: var(--color-primary); }

.plan-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
}

.plan-features li { display: flex; align-items: center; gap: 8px; }
.plan-features--free li { color: var(--color-text-secondary); }
.plan-features--paid li  { color: var(--color-text); }
.plan-features li .icon-x     { color: var(--color-error); font-weight: 700; }
.plan-features li .icon-check { color: var(--color-success); font-weight: 700; }

.plan-price {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
}

.plan-price span { font-size: 13px; font-weight: 500; }

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

#payLink {
  display: block;
  width: 100%;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius);
  padding: 14px 22px;
  font-family: inherit;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: background 0.2s;
}

#payLink:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
}

.modal-actions #closeModal {
  display: block;
  width: 100%;
  background: var(--color-btn-ghost-bg);
  color: var(--color-text-secondary);
  border: none;
  border-radius: var(--radius);
  padding: 14px 22px;
  font-family: inherit;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.2s;
}

.modal-actions #closeModal:hover { background: var(--color-btn-ghost-hover); }

.modal-suppress {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
}

/* =============================================
   ログイン / 登録ページ
   ============================================= */
body.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  min-height: 100vh;
}

.logo-area {
  text-align: center;
  margin-bottom: 32px;
}

.logo-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 16px;
}

.links {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
}

.link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

.link:hover { color: var(--color-primary-dark); }

.register-prompt,
.login-prompt {
  text-align: center;
  margin-top: 24px;
  font-size: 14px;
  color: var(--color-text-secondary);
  font-weight: 400;
}

.register-prompt a,
.login-prompt a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

.terms {
  font-size: 12px;
  color: var(--color-text-secondary);
  text-align: center;
  margin-top: 14px;
  font-weight: 400;
  line-height: 1.6;
}

.terms a { color: var(--color-primary); text-decoration: none; }

.badge {
  display: inline-block;
  background: var(--color-warning-bg);
  color: var(--color-warning);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-round);
  margin-left: 6px;
  vertical-align: middle;
  border: 1px solid var(--color-warning-border);
}

/* =============================================
   パスワード強度
   ============================================= */
.password-strength {
  margin-top: 8px;
  height: 4px;
  border-radius: var(--radius-round);
  background: var(--color-border);
  overflow: hidden;
}

.password-strength-bar {
  height: 100%;
  border-radius: var(--radius-round);
  transition: all 0.3s;
  width: 0%;
}

.strength-label {
  font-size: 12px;
  font-weight: 600;
  margin-top: 6px;
}

.requirements {
  margin-top: 10px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.req-item {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-border);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s;
}

.req-item.met { color: var(--color-success); }
.req-item::before { content: '○'; font-size: 10px; }
.req-item.met::before { content: '✓'; }

/* =============================================
   OTP入力
   ============================================= */
.otp-container {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 28px;
}

.otp-input {
  width: 52px;
  height: 60px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", monospace;
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  padding: 0;
}

.otp-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-tint);
}

.otp-input.filled {
  border-color: var(--color-success);
  background: var(--color-success-bg);
  color: var(--color-success);
}

/* =============================================
   ステップインジケーター
   ============================================= */
.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 32px;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.step-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  transition: all 0.3s;
  border: 1.5px solid var(--color-border);
  color: var(--color-text-secondary);
  background: var(--color-surface);
}

.step.active .step-circle {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.step.done .step-circle {
  background: var(--color-success);
  border-color: var(--color-success);
  color: white;
}

.step-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
}

.step.active .step-label { color: var(--color-primary); }
.step.done .step-label   { color: var(--color-success); }

.step-line {
  width: 52px;
  height: 1.5px;
  background: var(--color-border);
  margin: 0 4px;
  margin-bottom: 20px;
  border-radius: var(--radius-round);
  transition: background 0.3s;
}

.step-line.done { background: var(--color-success); }

/* =============================================
   メール表示 / 再送信
   ============================================= */
.email-display {
  display: inline-block;
  background: var(--color-warning-bg);
  color: var(--color-warning);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  border: 1px solid var(--color-warning-border);
}

.resend-area {
  margin-top: 24px;
  font-size: 13px;
  color: var(--color-text-secondary);
  font-weight: 400;
}

#resendBtn {
  background: none;
  border: none;
  color: var(--color-primary);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  transition: color 0.2s;
}

#resendBtn:hover { color: var(--color-primary-dark); }
#resendBtn:disabled { color: var(--color-text-secondary); cursor: not-allowed; }

.countdown { color: var(--color-primary); font-weight: 700; }

.back-link {
  display: block;
  margin-top: 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
  text-align: center;
}

.back-link:hover { color: var(--color-primary-dark); }

/* =============================================
   成功オーバーレイ
   ============================================= */
.success-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 100;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  text-align: center;
}

.success-overlay.show { display: flex; }
.success-emoji { font-size: 64px; }
.success-text  { font-size: 22px; font-weight: 700; color: var(--color-text); letter-spacing: -0.02em; }
.success-sub   { font-size: 15px; color: var(--color-text-secondary); font-weight: 400; }

/* =============================================
   ログアウトページ
   ============================================= */
.icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 18px;
  background: var(--color-btn-ghost-bg);
}

.icon.bye { background: var(--color-primary); }

.btn-danger {
  background: var(--color-error);
  color: white;
  border: none;
  border-radius: var(--radius);
  width: 100%;
  padding: 14px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 12px;
  transition: opacity 0.2s;
}

.btn-danger:hover { opacity: 0.85; }

.btn-cancel {
  background: var(--color-btn-ghost-bg);
  color: var(--color-text-secondary);
  border: none;
  border-radius: var(--radius);
  width: 100%;
  padding: 14px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-cancel:hover { background: var(--color-btn-ghost-hover); }

.spinner-wrap {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin: 16px 0;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 2.5px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: ds-spin 0.65s linear infinite;
}

.spinner-text {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* =============================================
   サイドバー — ユーザーポップオーバー
   ============================================= */
.sidebar-user-wrap {
  position: relative;
}

/* ユーザーボタン化 */
.sidebar-user {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  font-size: 14px;
}

.sidebar-user-chevron {
  margin-left: auto;
  font-size: 16px;
  color: var(--color-text-tertiary);
  line-height: 1;
  transition: transform 0.2s;
}

.sidebar-user[aria-expanded="true"] .sidebar-user-chevron {
  transform: rotate(90deg);
}

/* 吹き出し本体 */
.sidebar-user-popover {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 300;

  /* 吹き出し三角（下向き） */
}

.sidebar-user-popover::after {
  content: '';
  position: absolute;
  bottom: -7px;
  left: 20px;
  width: 12px;
  height: 12px;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  transform: rotate(45deg);
}

.user-popover-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  transition: background 0.15s;
}

.user-popover-item:hover {
  background: var(--color-hover-bg);
  text-decoration: none;
  color: var(--color-text);
}

.user-popover-item + .user-popover-item {
  border-top: 1px solid var(--color-border);
}

.user-popover-item--danger {
  color: var(--color-error);
}

.user-popover-item--danger:hover {
  background: var(--color-error-bg);
  color: var(--color-error);
}

.user-popover-icon {
  font-size: 15px;
  flex-shrink: 0;
}

/* =============================================
   ダークモードトグル
   ============================================= */
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius);
  font-size: 17px;
  line-height: 1;
  color: var(--color-text-secondary);
  transition: background 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.theme-toggle:hover { background: var(--color-hover-bg); }

/* =============================================
   区切り線
   ============================================= */
.swiss-divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-xl) 0;
}