:root {
    --bg-color: #fdfaf3; --card-bg: #ffffff; --text-main: #433e3a;
    --text-sub: #7d756d; --border: #e6e0d4; --accent: #8c7355; --tag-bg: #f5f0e6;
    --warn-bg: #fffbf0; --warn-border: #f0e2b6; --warn-text: #8c6a00;
}

.dark-theme {
    --bg-color: #0d1117; --card-bg: #161b22; --text-main: #c9d1d9;
    --text-sub: #8b949e; --border: #30363d; --accent: #58a6ff; --tag-bg: #21262d;
    --warn-bg: #2b2311; --warn-border: #664d03; --warn-text: #ffdf5d;
}

body { background-color: var(--bg-color); color: var(--text-main); font-family: -apple-system, sans-serif; margin: 0; padding: 20px; transition: background-color 0.3s; }
.container { max-width: 1100px; margin: 0 auto; }

header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; border-bottom: 2px solid var(--border); padding-bottom: 10px; }
h1 { font-size: 1.5rem; color: var(--accent); margin: 0; }
.header-right { display: flex; gap: 10px; }
.icon-button, .lang-button { background: var(--tag-bg); color: var(--accent); border: 1px solid var(--border); padding: 6px 12px; border-radius: 6px; cursor: pointer; font-weight: bold; font-size: 0.9rem; }
.icon-button:hover { background: var(--card-bg); }

.intro-card { background: var(--card-bg); border: 1px solid var(--border); padding: 15px 20px; border-radius: 12px; margin-bottom: 15px; }
.intro-card h2 { font-size: 1.1rem; margin-top: 0; color: var(--accent); margin-bottom: 8px; }
.intro-card p { font-size: 0.9rem; line-height: 1.6; margin-bottom: 0; }

.warning-card { background: var(--warn-bg); border: 1px solid var(--warn-border); color: var(--warn-text); border-radius: 12px; margin-bottom: 25px; overflow: hidden; }
.warning-card summary { font-size: 0.95rem; font-weight: bold; padding: 15px 20px; cursor: pointer; outline: none; list-style: none; display: flex; align-items: center; }
.warning-card summary::-webkit-details-marker { display: none; }
.warning-card summary::before { content: "▶"; font-size: 0.8rem; margin-right: 8px; display: inline-block; transition: transform 0.2s; }
.warning-card[open] summary::before { transform: rotate(90deg); }
.details-content { padding: 0 20px 20px 20px; }
.warning-card p { font-size: 0.85rem; line-height: 1.6; margin: 0; }
.vendor-mechanisms { margin: 12px 0; padding-left: 20px; font-size: 0.85rem; line-height: 1.6; }
.vendor-mechanisms li { margin-bottom: 5px; }
.warn-conclusion { font-size: 0.9rem; line-height: 1.5; margin-top: 15px; padding-top: 15px; border-top: 1px dashed var(--warn-border); }

.chart-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; flex-wrap: wrap; gap: 10px; }
.display-toggles { display: flex; gap: 15px; align-items: center; background: var(--card-bg); padding: 10px 20px; border-radius: 8px; border: 1px solid var(--border); }
.toggle-title { font-size: 0.85rem; color: var(--text-sub); font-weight: bold; }
.toggle-label { display: flex; align-items: center; gap: 5px; cursor: pointer; font-size: 0.85rem; color: var(--text-main); font-weight: bold; }
.toggle-label input { accent-color: var(--accent); cursor: pointer; width: 16px; height: 16px; }

.refresh-button { background: var(--tag-bg); color: var(--text-main); border: 1px solid var(--border); padding: 8px 15px; border-radius: 8px; cursor: pointer; font-size: 0.85rem; font-weight: bold; transition: 0.2s; }
.refresh-button:hover { background: var(--card-bg); border-color: var(--accent); color: var(--accent); }
.chart-container { background: var(--card-bg); border: 1px solid var(--border); padding: 15px; border-radius: 12px; height: 400px; margin-bottom: 20px; }

body.hide-lat .type-lat { display: none !important; }
body.hide-jit .type-jit { display: none !important; }
body.hide-loss .type-loss { display: none !important; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 30px; }
.stat-card { background: var(--card-bg); padding: 12px; border-radius: 8px; border: 1px solid var(--border); display: flex; flex-direction: column; gap: 10px; }
.stat-card h3 { font-size: 0.8rem; color: var(--text-sub); margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.kpi-row { display: flex; justify-content: space-around; align-items: baseline; }
.kpi-val { text-align: center; display: flex; flex-direction: column; align-items: center; flex: 1; }
.kpi-label { font-size: 0.65rem; color: var(--text-sub); text-transform: uppercase; margin-bottom: 2px; }
.kpi-val span[id^="lat-"], .kpi-val span[id^="jit-"], .kpi-val span[id^="loss-"] { font-size: 1.1rem; font-weight: bold; color: var(--text-main); }
.kpi-val small { font-size: 0.65rem; color: var(--text-sub); margin-top: -2px; }

/* 👑 プレミアム AI カード */
.ai-card.premium-mode { background: linear-gradient(135deg, var(--card-bg) 0%, rgba(88, 166, 255, 0.05) 100%); border: 1px solid var(--accent); padding: 25px; border-radius: 12px; margin-bottom: 30px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); }
.ai-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 15px; margin-bottom: 5px; }
.ai-header h3 { font-size: 1.15rem; color: var(--accent); margin: 0; font-weight: 800; }
.run-ai-btn { background: linear-gradient(90deg, var(--accent), #4285F4); color: #fff; border: none; padding: 10px 25px; border-radius: 8px; cursor: pointer; font-weight: bold; font-size: 0.95rem; transition: 0.2s; box-shadow: 0 2px 8px rgba(66, 133, 244, 0.4); }
.run-ai-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(66, 133, 244, 0.6); }
.run-ai-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.ai-hint { font-size: 0.8rem; color: var(--text-sub); margin: 5px 0 15px 0; }

.markdown-body { padding: 20px; background: var(--bg-color); border: 1px solid var(--border); border-radius: 8px; font-size: 0.95rem; line-height: 1.7; color: var(--text-main); }
.markdown-body h3 { color: var(--text-main); font-size: 1.1rem; border-bottom: 1px solid var(--border); padding-bottom: 5px; margin-top: 1.5em; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.markdown-body h3:first-child { margin-top: 0; }
.markdown-body p { margin-bottom: 15px; }
.markdown-body ul { padding-left: 20px; margin-bottom: 15px; }
.markdown-body strong { color: var(--accent); font-weight: bold; }

/* 📄 履歴セクション */
.ai-history-section { margin-top: 25px; border-top: 1px dashed var(--border); padding-top: 20px; }
.ai-history-section h4 { font-size: 0.95rem; color: var(--text-sub); margin-top: 0; margin-bottom: 15px; }
.history-item { background: var(--tag-bg); border: 1px solid var(--border); border-radius: 8px; margin-bottom: 10px; overflow: hidden; }
.history-item summary { font-size: 0.85rem; font-weight: bold; padding: 12px 15px; cursor: pointer; outline: none; list-style: none; display: flex; align-items: center; color: var(--text-main); }
.history-item summary::-webkit-details-marker { display: none; }
.history-item summary::before { content: "▶"; font-size: 0.7rem; margin-right: 8px; display: inline-block; transition: transform 0.2s; color: var(--accent); }
.history-item[open] summary::before { transform: rotate(90deg); }
.history-item[open] summary { border-bottom: 1px solid var(--border); background: var(--card-bg); }
.history-body { border: none; border-radius: 0; margin: 0; background: var(--bg-color); }

.loader { border: 3px solid var(--border); border-top: 3px solid var(--accent); border-radius: 50%; width: 16px; height: 16px; animation: spin 1s linear infinite; display: inline-block; vertical-align: middle; margin-right: 8px; }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

/* ⚙️ 設定モーダル */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.6); backdrop-filter: blur(4px); display: flex; justify-content: center; align-items: center; z-index: 1000; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal-content { background: var(--bg-color); border: 1px solid var(--border); width: 95%; max-width: 800px; max-height: 90vh; border-radius: 15px; display: flex; flex-direction: column; box-shadow: 0 10px 30px rgba(0,0,0,0.3); }
.modal-header { padding: 15px 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; background: var(--card-bg); border-radius: 15px 15px 0 0; }
.modal-header h2 { margin: 0; font-size: 1.2rem; color: var(--text-main); }
.modal-close { background: transparent; border: none; color: var(--text-sub); font-size: 1.2rem; cursor: pointer; transition: 0.2s; }
.modal-close:hover { color: var(--accent); }
.modal-body { padding: 20px; overflow-y: auto; }

.api-settings-section h4 { margin: 0 0 10px 0; color: var(--text-main); font-size: 0.95rem; }
.api-key-input input { padding: 10px 12px; border-radius: 6px; border: 1px solid var(--border); background: var(--card-bg); color: var(--text-main); width: 100%; max-width: 400px; font-family: monospace; }
.modal-divider { border: 0; border-top: 1px solid var(--border); margin: 25px 0; }

.manager-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; }
.section-label { font-size: 0.95rem; font-weight: bold; color: var(--text-main); margin: 0; }
.selection-count { background: var(--tag-bg); color: var(--accent); font-weight: bold; padding: 4px 10px; border-radius: 10px; font-size: 0.85rem; }
.core-targets { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }
.tag-button { background: var(--tag-bg); border: 1px solid var(--border); color: var(--text-sub); padding: 8px 15px; border-radius: 6px; cursor: pointer; font-size: 0.85rem; transition: 0.1s; }
.tag-button.active { background: var(--card-bg); color: var(--text-main); font-weight: bold; box-shadow: 0 2px 5px rgba(0,0,0,0.05); }

.matrix-wrapper { overflow-x: auto; background: var(--card-bg); border: 1px solid var(--border); border-radius: 12px; padding: 15px; }
.selection-matrix { width: 100%; border-collapse: collapse; text-align: center; }
.selection-matrix th { padding: 10px; font-size: 0.85rem; color: var(--text-sub); border-bottom: 2px solid var(--border); }
.selection-matrix td { padding: 8px 5px; border-bottom: 1px solid var(--border); }
.selection-matrix tr:last-child td { border-bottom: none; }
.region-name { text-align: left; font-size: 0.85rem; font-weight: bold; color: var(--text-sub); }
.matrix-btn { background: var(--tag-bg); border: 1px solid var(--border); color: var(--text-sub); width: 100%; max-width: 60px; padding: 6px 0; border-radius: 6px; cursor: pointer; font-size: 0.85rem; font-weight: bold; transition: 0.2s; }
.matrix-btn.active { background: var(--v-color); color: #fff; border-color: var(--v-color); box-shadow: 0 2px 5px var(--v-color); }

.kpi-explanation { margin-top: 30px; border-top: 1px solid var(--border); padding-top: 20px; }
.kpi-explanation h3 { font-size: 1rem; color: var(--accent); margin-top: 0; margin-bottom: 15px; }
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 15px; }
.kpi-info { background: var(--tag-bg); padding: 15px; border-radius: 10px; border: 1px solid var(--border); }
.kpi-info h3 { font-size: 0.9rem; color: var(--accent); margin-top: 0; margin-bottom: 8px; }
.kpi-info p { font-size: 0.85rem; line-height: 1.6; color: var(--text-sub); margin: 0; }