/* ==========================================
   CSS カスタムプロパティ（ライトテーマ）
   ========================================== */
:root,
[data-theme="light"] {
    /* サイドバー */
    --sidebar-width: 220px;
    --sidebar-bg: #ffffff;
    --sidebar-text: #64748b;
    --sidebar-text-active: #0f172a;
    --sidebar-hover-bg: #f8fafc;
    --sidebar-active-bg: #eff6ff;
    --sidebar-border: #e2e8f0;
    --sidebar-brand-color: #1e293b;
    --sidebar-label-color: #94a3b8;
    --sidebar-overlay-hover: rgba(0,0,0,0.05);
    --sidebar-open-bg: #1e293b;
    --sidebar-open-color: rgba(255,255,255,0.85);
    --theme-btn-color: rgba(0,0,0,0.45);
    --theme-btn-bg: rgba(0,0,0,0.04);
    --theme-btn-border: rgba(0,0,0,0.1);
    --theme-btn-hover-bg: rgba(0,0,0,0.08);
    --theme-btn-hover-color: #0f172a;

    /* アクセント */
    --accent: #3b82f6;
    --accent-hover: #2563eb;

    /* コンテンツ */
    --body-bg: #f1f5f9;
    --card-bg: #ffffff;
    --card-radius: 12px;
    --card-shadow: 0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.05);
    --card-shadow-hover: 0 8px 24px rgba(0,0,0,0.11);
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --border-subtle: #f1f5f9;
    --input-bg: #ffffff;
    --input-border: #e2e8f0;

    /* テーブル操作 */
    --selected-row-bg: #cfe2ff;
    --selected-row-overlay: rgba(59, 130, 246, 0.15);
    --filter-bg: #ffffff;
    --filter-hover: #f0f4ff;
    --filter-text: #212529;
    --context-menu-bg: #ffffff;
    --context-menu-border: #dee2e6;
}

/* ==========================================
   ダークテーマ
   ========================================== */
[data-theme="dark"] {
    /* サイドバー */
    --sidebar-bg: #0f172a;
    --sidebar-text: rgba(255,255,255,0.62);
    --sidebar-text-active: #ffffff;
    --sidebar-hover-bg: rgba(255,255,255,0.07);
    --sidebar-active-bg: rgba(59,130,246,0.16);
    --sidebar-border: rgba(255,255,255,0.08);
    --sidebar-brand-color: #ffffff;
    --sidebar-label-color: rgba(255,255,255,0.28);
    --sidebar-overlay-hover: rgba(255,255,255,0.1);
    --sidebar-open-bg: #0f172a;
    --sidebar-open-color: rgba(255,255,255,0.8);
    --theme-btn-color: rgba(255,255,255,0.5);
    --theme-btn-bg: rgba(255,255,255,0.06);
    --theme-btn-border: rgba(255,255,255,0.1);
    --theme-btn-hover-bg: rgba(255,255,255,0.12);
    --theme-btn-hover-color: rgba(255,255,255,0.9);

    /* コンテンツ */
    --body-bg: #0f172a;
    --card-bg: #1e293b;
    --card-shadow: 0 1px 4px rgba(0,0,0,0.4);
    --card-shadow-hover: 0 8px 24px rgba(0,0,0,0.5);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --border-subtle: #1e293b;
    --input-bg: #0f172a;
    --input-border: #475569;

    --selected-row-bg: #1d3a5e;
    --selected-row-overlay: rgba(59, 130, 246, 0.2);
    --filter-bg: #1e293b;
    --filter-hover: #2d3f55;
    --filter-text: #e2e8f0;
    --context-menu-bg: #1e293b;
    --context-menu-border: #475569;
}

/* ==========================================
   ベース
   ========================================== */
html {
    font-size: 14px;
    position: relative;
    min-height: 100%;
}

@media (min-width: 768px) {
    html { font-size: 15px; }
}

body {
    background: var(--body-bg);
    color: var(--text-primary);
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Yu Gothic UI", sans-serif;
    transition: background 0.2s, color 0.2s;
}

/* ==========================================
   サイドバー
   ========================================== */
.app-sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform 0.25s ease, background 0.2s, border-color 0.2s;
}

body.sidebar-hidden .app-sidebar {
    transform: translateX(-100%);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 16px 16px 20px;
    border-bottom: 1px solid var(--sidebar-border);
    text-decoration: none;
    transition: border-color 0.2s;
}

.sidebar-toggle {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--sidebar-label-color);
    font-size: 0.95rem;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    line-height: 1;
    flex-shrink: 0;
    transition: color 0.15s, background 0.15s;
}

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

/* 閉じているとき浮動する開くボタン */
.sidebar-open-btn {
    position: fixed;
    top: 14px;
    left: 14px;
    z-index: 200;
    background: var(--sidebar-open-bg);
    color: var(--sidebar-open-color);
    border: none;
    border-radius: 8px;
    padding: 7px 12px;
    font-size: 1.1rem;
    cursor: pointer;
    display: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    transition: background 0.15s;
}

body.sidebar-hidden .sidebar-open-btn { display: block; }

.brand-icon { font-size: 1.3rem; }

.brand-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--sidebar-brand-color);
    letter-spacing: 0.3px;
    transition: color 0.2s;
}

.sidebar-nav {
    flex: 1;
    padding: 8px 0;
    overflow-y: auto;
}

.sidebar-nav-label {
    padding: 14px 20px 4px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--sidebar-label-color);
    transition: color 0.2s;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 11px 20px;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 1rem;
    transition: background 0.15s, color 0.15s;
}

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

.sidebar-link.active {
    background: var(--sidebar-active-bg);
    color: var(--accent);
    font-weight: 600;
    border-left: 3px solid var(--accent);
    padding-left: 17px;
}

/* テーマ切り替えボタン */
.theme-switcher {
    padding: 8px 12px;
    border-top: 1px solid var(--sidebar-border);
    display: flex;
    gap: 4px;
    transition: border-color 0.2s;
}

.theme-btn {
    flex: 1;
    background: var(--theme-btn-bg);
    border: 1px solid var(--theme-btn-border);
    border-radius: 7px;
    color: var(--theme-btn-color);
    cursor: pointer;
    font-size: 0.95rem;
    padding: 5px 0;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    line-height: 1.4;
}

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

.theme-btn.active {
    background: rgba(59,130,246,0.2);
    color: #3b82f6;
    border-color: rgba(59,130,246,0.4);
}

.sidebar-footer {
    padding: 10px 16px 14px;
    border-top: 1px solid var(--sidebar-border);
    transition: border-color 0.2s;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    flex-shrink: 0;
}

.user-info { min-width: 0; flex: 1; }

.user-name {
    color: var(--sidebar-brand-color);
    font-size: 0.82rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.2s;
}

.user-logout {
    color: var(--sidebar-label-color);
    font-size: 0.75rem;
    text-decoration: none;
    transition: color 0.15s;
}

.user-logout:hover { color: var(--sidebar-text-active); }

/* ==========================================
   メインコンテンツエリア
   ========================================== */
.app-main {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left 0.25s ease;
}

body.sidebar-hidden .app-main {
    margin-left: 0;
}

/* ==========================================
   ページヘッダー
   ========================================== */
.page-header {
    padding: 28px 32px 20px;
}

body.sidebar-hidden .page-header {
    padding-left: 68px;
}

.page-title {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin: 3px 0 0;
}

/* ==========================================
   コンテンツカード
   ========================================== */
.app-card {
    background: var(--card-bg);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    transition: background 0.2s;
}

/* ==========================================
   テーブルカード（一覧用）
   ========================================== */
.table-card {
    border: 1px solid var(--border-color) !important;
    border-radius: var(--card-radius) !important;
    box-shadow: var(--card-shadow);
    transition: box-shadow 0.2s, transform 0.2s;
    overflow: hidden;
}

.table-card:hover {
    box-shadow: var(--card-shadow-hover);
    transform: translateY(-2px);
}

/* ==========================================
   ボタン
   ========================================== */
.btn {
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--accent);
    border-color: var(--accent);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn:focus,
.btn:active:focus,
.form-control:focus,
.form-check-input:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

/* ==========================================
   アラート
   ========================================== */
.alert {
    border-radius: 10px;
    border: none;
    font-size: 0.9rem;
}

/* ==========================================
   モーダル
   ========================================== */
.modal-content {
    border: none;
    border-radius: var(--card-radius);
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.modal-header {
    border-bottom: 1px solid var(--border-subtle);
    padding: 20px 24px 16px;
}

.modal-footer {
    border-top: 1px solid var(--border-subtle);
    padding: 16px 24px;
}

/* ==========================================
   プログレスバー
   ========================================== */
.progress {
    border-radius: 8px;
    background-color: var(--border-color);
}

.progress-bar {
    border-radius: 8px;
}

/* ==========================================
   フォームコントロール
   ========================================== */
.form-control {
    border-radius: 8px;
    border-color: var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-control:focus {
    border-color: var(--accent);
    background-color: var(--input-bg);
    color: var(--text-primary);
}