@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

:root {
    --bg-main: #0f172a;
    --bg-header: rgba(15, 23, 42, 0.95);
    --border-color: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --bg-card: #1e293b;
    --bg-input: #0f172a;
    --bg-input-border: #475569;
    --scrollbar-track: #1e293b;
    --scrollbar-thumb: #475569;
    --brand-color: #6366f1;
    --brand-hover: #4f46e5;
}

body.theme-light {
    --bg-main: #f8fafc;
    --bg-header: rgba(255, 255, 255, 0.95);
    --border-color: #cbd5e1;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-input-border: #cbd5e1;
    --scrollbar-track: #e2e8f0;
    --scrollbar-thumb: #94a3b8;
    --brand-color: #4f46e5;
    --brand-hover: #4338ca;
}

/* 基本レイアウト */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: background-color 0.25s ease, color 0.25s ease;
}

/* Header Toolbar */
.app-header {
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 16px;
    z-index: 20;
    backdrop-filter: blur(8px);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: fit-content;
}

.brand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    background-color: var(--brand-color);
    color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.brand-title {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.brand-badge {
    font-size: 0.75rem;
    font-weight: 400;
    padding: 2px 8px;
    border-radius: 4px;
    background-color: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.brand-desc {
    margin: 2px 0 0;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* 検索ボックス */
.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 10px;
    color: var(--text-secondary);
    pointer-events: none;
}

.search-input {
    background-color: var(--bg-input);
    border: 1px solid var(--bg-input-border);
    color: var(--text-primary);
    font-size: 0.875rem;
    border-radius: 8px;
    padding: 6px 12px 6px 34px;
    width: 200px;
    outline: none;
    transition: border-color 0.2s, width 0.2s;
}

.search-input:focus {
    border-color: var(--brand-color);
    width: 230px;
}

/* 年代セレクト */
.era-select {
    background-color: var(--bg-input);
    border: 1px solid var(--bg-input-border);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    padding: 6px 12px;
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s;
}

.era-select:focus {
    border-color: var(--brand-color);
}

/* ボタングループ (ズーム等) */
.btn-group {
    display: inline-flex;
    align-items: center;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2px;
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 6px 8px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.15s, color 0.15s;
}

.btn-icon:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

body.theme-light .btn-icon:hover {
    background-color: rgba(0, 0, 0, 0.06);
}

/* アクションボタン (テーマ・管理者・追加) */
.btn-action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s;
}

.btn-action:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: var(--brand-color);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background-color: var(--brand-color);
    border: 1px solid transparent;
    color: #ffffff;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.15s, transform 0.05s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    background-color: var(--brand-hover);
}

.btn-primary:active {
    transform: scale(0.98);
}

/* Main Content & Vis Network */
.app-main {
    position: relative;
    flex: 1;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

#mynetwork {
    width: 100%;
    height: 100%;
    background-color: var(--bg-main);
    transition: background-color 0.25s ease;
}

/* 凡例カード */
.legend-card {
    position: absolute;
    bottom: 16px;
    left: 16px;
    background-color: rgba(15, 23, 42, 0.9);
    border: 1px solid var(--border-color);
    padding: 14px;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
    max-width: 280px;
    z-index: 10;
}

body.theme-light .legend-card {
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

.legend-title {
    margin: 0 0 8px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.legend-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

/* Modals */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.modal-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    max-height: 90vh;
    transition: transform 0.15s ease, opacity 0.15s ease;
}

.modal-header {
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

body.theme-light .modal-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.modal-body {
    padding: 20px;
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}

.modal-footer {
    padding: 12px 20px;
    background-color: rgba(0, 0, 0, 0.2);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

body.theme-light .modal-footer {
    background-color: rgba(0, 0, 0, 0.03);
}

.form-group {
    margin-bottom: 14px;
}

.form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.form-input, .form-textarea {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--bg-input-border);
    border-radius: 8px;
    padding: 8px 10px;
    font-size: 0.8125rem;
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s;
    font-family: inherit;
}

.form-input:focus, .form-textarea:focus {
    border-color: var(--brand-color);
}

/* ===================================================
   スマホ表示（レスポンシブ対応: 768px以下）
=================================================== */
@media (max-width: 768px) {
    .app-header {
        padding: 8px 12px;
        gap: 8px;
    }

    .header-brand {
        width: 100%;
        justify-content: space-between;
    }

    .brand-desc {
        display: none; /* スマホでは説明文を非表示にしコンパクト化 */
    }

    .header-controls {
        width: 100%;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 6px;
    }

    /* 検索バーと年代選択を1段目に並列配置 */
    .search-wrapper {
        width: 100%;
    }

    .search-input {
        width: 100% !important;
        font-size: 0.8125rem;
        padding-left: 28px;
    }

    .search-icon {
        left: 8px;
        width: 14px;
        height: 14px;
    }

    .era-select {
        width: 100%;
        font-size: 0.8125rem;
        padding: 6px 8px;
    }

    /* ボタン類の段 */
    .header-actions {
        grid-column: span 2;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 6px;
    }

    .header-actions .btn-group {
        flex-shrink: 0;
    }

    .btn-action, .btn-primary {
        padding: 5px 8px;
        font-size: 0.7rem;
    }

    /* 凡例をスマホでは非表示 */
    .legend-card {
        display: none;
    }

    .modal-overlay {
        padding: 8px;
    }
}

/* スクロールバー */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 3px;
}

/* ドロップダウン（select / option）視認性向上 */
select {
    color: var(--text-primary) !important;
    background-color: var(--bg-card) !important;
}

select option {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
    padding: 6px 10px;
}

/* テーマ補助クラス */
.bg-theme-panel {
    background-color: var(--bg-card) !important;
    border-color: var(--border-color) !important;
}

.bg-theme-header {
    background-color: var(--bg-header) !important;
    border-color: var(--border-color) !important;
}

.bg-theme-input {
    background-color: var(--bg-input) !important;
    border-color: var(--bg-input-border) !important;
    color: var(--text-primary) !important;
}

.bg-theme-btn-secondary {
    background-color: #334155 !important;
    color: #f8fafc !important;
    border-color: var(--border-color) !important;
}

body.theme-light .bg-theme-btn-secondary {
    background-color: #e2e8f0 !important;
    color: #334155 !important;
    border-color: #cbd5e1 !important;
}

.text-theme-sub {
    color: var(--text-secondary) !important;
}

.text-theme-main {
    color: var(--text-primary) !important;
}

.border-theme {
    border-color: var(--border-color) !important;
}