/*-------------------------------
  CSS変数定義
-------------------------------*/
:root {
  --color-primary: #ff0000;
  --color-primary-hover: #cc0000;
  --color-bg: #0f0f0f;
  --color-text: #ffffff;
  --color-text-secondary: #aaaaaa;
  --color-surface: #1a1a1a;
  --color-surface-hover: #222222;
  --color-border: #333333;
  --color-border-hover: #555555;
  --color-success: #00b894;
  --color-warning: #fdcb6e;
  --color-danger: #d63031;
  --color-info: #0984e3;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-xs: 12px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --radius-base: 8px;
  --radius-sm: 4px;
  --radius-lg: 12px;
  --shadow-base: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.6);
  --transition-base: 0.2s ease;
  --sidebar-width: 220px;
  --layout-ad-width: 240px;
  --header-height: 56px;
}

/* ライトモード（html に data-theme="light" を付与） */
[data-theme="light"] {
  --color-bg: #ffffff;
  --color-surface: #f5f5f5;
  --color-surface-hover: #ebebeb;
  --color-text: #1a1a1a;
  --color-text-secondary: #666666;
  --color-border: #e0e0e0;
  --color-border-hover: #cccccc;
  --shadow-base: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
}

/*-------------------------------
  リセット・ベース
-------------------------------*/
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: 'Hiragino Kaku Gothic ProN', 'メイリオ', 'Meiryo', sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

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

a:hover {
  text-decoration: underline;
}

ul,
ol {
  list-style: none;
}

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

button {
  cursor: pointer;
  font-family: inherit;
  font-size: var(--font-size-base);
}

input,
textarea,
select {
  font-family: inherit;
  font-size: var(--font-size-base);
}

/*-------------------------------
  レイアウト
-------------------------------*/
.layout {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: stretch;
  width: 100%;
  min-width: 0;
  min-height: 100vh;
}

.layout__sidebar {
  position: static;
  flex: 0 0 var(--sidebar-width);
  flex-shrink: 0;
  width: var(--sidebar-width);
  max-width: var(--sidebar-width);
  align-self: stretch;
  min-height: 100vh;
  background-color: var(--color-surface);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  z-index: auto;
}

.layout__main {
  position: relative;
  flex: 1 1 auto;
  flex-shrink: 1;
  min-width: 0;
  width: auto;
  margin-left: 0;
  margin-right: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.layout__ad {
  position: static;
  flex: 0 0 var(--layout-ad-width);
  flex-shrink: 0;
  width: var(--layout-ad-width);
  max-width: var(--layout-ad-width);
  align-self: stretch;
  min-height: 100vh;
  box-sizing: border-box;
  padding: 16px;
  background-color: var(--color-surface);
  border: 1px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.layout__ad-label {
  margin: 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-align: center;
}

.layout__header {
  height: var(--header-height);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 90;
}

.layout__content {
  flex: 1;
  padding: 24px;
}

/*-------------------------------
  サイドナビゲーション
-------------------------------*/
.sidenav {
  padding: 16px 0;
}

.sidenav__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px 16px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 8px;
}

.sidenav__logo-text {
  font-size: var(--font-size-sm);
  font-weight: bold;
  color: var(--color-text);
  line-height: 1.3;
}

.sidenav__section-title {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  padding: 12px 16px 4px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.sidenav__section-title.-api-key {
  margin-top: 32px;
  border-top: 1px solid var(--color-border);
}

.sidenav__item {
  display: block;
}

.sidenav__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  transition: color var(--transition-base), background-color var(--transition-base);
  border-radius: 0;
}

.sidenav__link:hover {
  color: var(--color-text);
  background-color: var(--color-surface-hover);
  text-decoration: none;
}

.sidenav__link.is-active {
  color: var(--color-text);
  background-color: rgba(255, 0, 0, 0.1);
  border-left: 3px solid var(--color-primary);
}

/* サイドナビ内のボタン（リンクと同見た目） */
.sidenav__btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin: 0;
  padding: 10px 16px;
  border: none;
  border-radius: 0;
  background: transparent;
  color: var(--color-text-secondary);
  font-family: inherit;
  font-size: var(--font-size-sm);
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-base), background-color var(--transition-base);
}

.sidenav__btn:hover {
  color: var(--color-text);
  background-color: var(--color-surface-hover);
}

.sidenav__icon {
  font-size: 16px;
  flex-shrink: 0;
}

.sidenav__api-key {
  margin-top: 4px;
  padding: 0 12px 8px 16px;
  border-block: 1px solid var(--color-border);
}

.sidenav__api-key-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 8px;
}

.sidenav__api-key-row:first-of-type {
  margin-top: 10px;
}

.sidenav__api-key-label {
  font-size: 10px;
  color: var(--color-text-secondary);
  line-height: 1.35;
  flex: 1;
  min-width: 0;
}

.sidenav__api-key-badge {
  flex-shrink: 0;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 100px;
  line-height: 1.3;
}

.sidenav__api-key-badge--set {
  background-color: rgba(0, 184, 148, 0.18);
  color: var(--color-success);
}

.sidenav__api-key-badge--unset {
  background-color: rgba(214, 48, 49, 0.18);
  color: var(--color-danger);
}

.sidenav__api-key-link {
  display: block;
  margin-top: 10px;
  padding: 6px 8px;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  line-height: 1.35;
  transition: color var(--transition-base), background-color var(--transition-base),
    border-color var(--transition-base);
}

.sidenav__api-key-link:hover {
  color: var(--color-text);
  background-color: var(--color-surface-hover);
  text-decoration: none;
}

/* サイドナビ下部：広告枠 */
.sidenav__ad {
  width: 100%;
  margin-top: 16px;
  padding: 20px 12px;
  min-height: 80px;
  box-sizing: border-box;
  background-color: var(--color-surface);
  border: 1px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidenav__ad-label {
  margin: 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-align: center;
}

/*-------------------------------
  ページヘッダー
-------------------------------*/
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.page-header__title {
  font-size: var(--font-size-xl);
  font-weight: bold;
}

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

.page-header__last-updated {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: 6px;
  margin-bottom: 0;
}

.page-header__quota-btn {
  min-width: 28px;
  padding: 2px 8px;
  font-weight: bold;
}

/*-------------------------------
  セクション
-------------------------------*/
.section {
  margin-top: 40px;
}

.section:first-child {
  margin-top: 0;
}

.section__title {
  font-size: var(--font-size-lg);
  font-weight: bold;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

/*-------------------------------
  セクションヘッダー（タイトル＋アクション）
-------------------------------*/
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.section-header__title {
  font-size: var(--font-size-lg);
  font-weight: bold;
}

/*-------------------------------
  グリッド
-------------------------------*/
.grid {
  display: grid;
  gap: 16px;
}

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

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

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

/*-------------------------------
  ユーティリティ
-------------------------------*/
.text-secondary {
  color: var(--color-text-secondary);
}

.text-sm {
  font-size: var(--font-size-sm);
}

.text-xs {
  font-size: var(--font-size-xs);
}

.text-right {
  text-align: right;
}

.mt-8 {
  margin-top: 8px;
}

.mt-16 {
  margin-top: 16px;
}

.mt-24 {
  margin-top: 24px;
}

.mt-32 {
  margin-top: 32px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/*-------------------------------
  ローディング
-------------------------------*/
.loading {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 24px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.loading.is-active {
  display: flex;
}

.loading__spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/*-------------------------------
  トースト通知
-------------------------------*/
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  padding: 12px 16px;
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-lg);
  max-width: 320px;
  animation: toast-in 0.3s ease;
}

.toast--success {
  border-left: 4px solid var(--color-success);
}

.toast--error {
  border-left: 4px solid var(--color-danger);
}

.toast--warning {
  border-left: 4px solid var(--color-warning);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/*-------------------------------
  空状態
-------------------------------*/
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 24px;
  color: var(--color-text-secondary);
  text-align: center;
}

/* hidden 属性と併用時：.empty-state の display が [hidden] を打ち消さないようにする */
.empty-state[hidden] {
  display: none;
}

.empty-state__icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.empty-state__title {
  font-size: var(--font-size-lg);
  font-weight: bold;
  color: var(--color-text);
  margin-bottom: 8px;
}

.empty-state__description {
  font-size: var(--font-size-sm);
  max-width: 320px;
}

.empty-state__action {
  margin-top: 24px;
}