/* === リセット === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
.hidden { display: none !important; }

/* === テーマ変数 === */
:root, [data-theme="dark"] {
  /* 背景: さらに明度を上げた深い紺 */
  --bg-0: #232340; --bg-1: #2a2a4a; --bg-2: #353558; --bg-3: #424268;
  /* ボーダー: かなり明るく */
  --border: #6a6a88; --border-hover: #8080a0;
  /* テキスト: 最大コントラスト */
  --text-0: #f0f0f8; --text-1: #ccccdd; --text-2: #a0a0b8;
  /* アクセント・セマンティック: 鮮やかなパステル */
  --accent: #a5b4fc; --accent-hover: #818cf8; --accent-subtle: rgba(165,180,252,.25);
  --success: #6ee7b7; --success-subtle: rgba(110,231,183,.22);
  --danger: #fca5a5; --danger-subtle: rgba(252,165,165,.22);
  --warn: #fde68a; --warn-subtle: rgba(253,230,138,.22);
  --info: #93c5fd; --info-subtle: rgba(147,197,253,.22);
  --input-bg: #1c1c38;
  --radius: 10px; --radius-sm: 6px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Noto Sans JP', sans-serif;
  --mono: 'JetBrains Mono', 'Cascadia Code', 'SF Mono', monospace;
  --shadow: 0 4px 16px rgba(0,0,0,.5);
  color-scheme: dark;
}
[data-theme="light"] {
  --bg-0: #ffffff; --bg-1: #f8f8fa; --bg-2: #f0f0f3; --bg-3: #e8e8ec;
  --border: #d4d4dc; --border-hover: #b0b0bc;
  --text-0: #111113; --text-1: #63636e; --text-2: #a0a0ab;
  --accent: #4f46e5; --accent-hover: #4338ca; --accent-subtle: rgba(79,70,229,.10);
  --success: #16a34a; --success-subtle: rgba(22,163,74,.10);
  --danger: #dc2626; --danger-subtle: rgba(220,38,38,.10);
  --warn: #d97706; --warn-subtle: rgba(217,119,6,.10);
  --info: #2563eb; --info-subtle: rgba(37,99,235,.10);
  --input-bg: #ffffff;
  --shadow: 0 2px 8px rgba(0,0,0,.08);
  color-scheme: light;
}

body { font-family: var(--font); background: var(--bg-0); color: var(--text-0); line-height: 1.5; height: 100vh; height: 100dvh; overflow: hidden; font-size: 14px; transition: background .2s, color .2s; display: flex; flex-direction: column; }

/* === アイコンサイズ === */
.icon-xs { width: 14px; height: 14px; } .icon-sm { width: 18px; height: 18px; }
.icon-lg { width: 40px; height: 40px; color: var(--text-2); } .icon-xl { width: 56px; height: 56px; color: var(--text-2); }

/* === ヘッダー === */
#header { display: flex; justify-content: space-between; align-items: center; padding: 10px 20px; padding-top: max(10px, env(safe-area-inset-top)); background: var(--bg-1); border-bottom: 1px solid var(--border); flex-shrink: 0; transition: margin-top 0.3s ease, opacity 0.3s ease; }
.header-left { display: flex; align-items: center; gap: 10px; }
.header-left h1 { font-size: 15px; font-weight: 600; letter-spacing: -.02em; }
.logo { display: flex; align-items: center; color: var(--accent); }
.header-right { display: flex; align-items: center; gap: 8px; }

/* === フォーカスモード === */
body.chrome-hidden #header, body.chrome-hidden .stats-bar { display: none; }
.chrome-restore { position: fixed; top: env(safe-area-inset-top, 0px); left: 50%; transform: translateX(-50%); z-index: 200; display: flex; align-items: center; justify-content: center; cursor: pointer; background: transparent; border: none; }
.chrome-restore-inner { padding: 2px 12px; border-radius: 0 0 6px 6px; background: var(--bg-2); border: 1px solid var(--border); border-top: none; font-size: 11px; color: var(--text-2); display: flex; align-items: center; gap: 4px; opacity: 0.6; transition: opacity 0.2s; }
.chrome-restore:hover .chrome-restore-inner { opacity: 1; }

/* === サマリーバー === */
.stats-bar { display: flex; gap: 12px; padding: 6px 20px; background: var(--bg-1); border-bottom: 1px solid var(--border); flex-shrink: 0; }
.stat-card { display: flex; align-items: center; gap: 6px; padding: 4px 12px; border-radius: 8px; background: var(--bg-2); font-size: 12px; }
.stat-card .icon-xs { color: var(--text-3); flex-shrink: 0; }
.stat-label { color: var(--text-3); }
.stat-value { font-weight: 600; color: var(--text-1); font-variant-numeric: tabular-nums; }

/* === 接続状態 === */
.conn { display: flex; align-items: center; gap: 4px; font-size: 12px; padding: 3px 8px; border-radius: 20px; }
.conn.connected { background: var(--success-subtle); color: var(--success); }
.conn.disconnected { background: var(--danger-subtle); color: var(--danger); }

/* === クォータバッジ === */
.quota-badge { position: relative; display: flex; align-items: center; gap: 6px; font-size: 12px; padding: 4px 10px; border-radius: 20px; background: var(--bg-2); border: 1px solid var(--border); color: var(--text-1); cursor: pointer; user-select: none; }
.quota-badge .icon-xs { color: var(--warn); }
.quota-bar-wrap { width: 48px; height: 5px; background: var(--bg-3); border-radius: 3px; overflow: hidden; }
.quota-bar { height: 100%; border-radius: 3px; background: var(--success); transition: width .4s ease, background .4s ease; }
.quota-bar.low { background: var(--warn); }
.quota-bar.critical { background: var(--danger); }
.quota-popover { position: absolute; top: calc(100% + 8px); right: 0; min-width: min(280px, calc(100vw - 16px)); background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 12px; z-index: 100; font-size: 13px; }
.quota-popover .popover-arrow { position: absolute; top: -6px; right: 16px; width: 10px; height: 10px; background: var(--bg-1); border-left: 1px solid var(--border); border-top: 1px solid var(--border); transform: rotate(45deg); }
.quota-popover .quota-row { display: flex; justify-content: space-between; align-items: center; padding: 6px 0; border-bottom: 1px solid var(--border); }
.quota-popover .quota-row:last-child { border-bottom: none; }
.quota-popover .quota-label { color: var(--text-1); }
.quota-popover .quota-value { font-weight: 600; font-variant-numeric: tabular-nums; }
.quota-popover .quota-bar-full { width: 100%; height: 6px; background: var(--bg-3); border-radius: 3px; overflow: hidden; margin-top: 4px; }
.quota-popover .quota-bar-fill { height: 100%; border-radius: 3px; transition: width .3s; }
.quota-popover .quota-meta { font-size: 11px; color: var(--text-2); margin-top: 8px; display: flex; justify-content: space-between; }
.confirm-cost { font-size: 13px; color: var(--text-1); margin-bottom: 8px; }

/* === チップ === */
.chip { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 20px; font-size: 11px; font-weight: 500; background: var(--bg-3); color: var(--text-1); }
.chip-danger { background: color-mix(in srgb, var(--danger) 20%, transparent); color: var(--danger); }
.chip-info { background: color-mix(in srgb, var(--info, #60a5fa) 20%, transparent); color: var(--info, #60a5fa); }
.chip-success { background: color-mix(in srgb, var(--success) 20%, transparent); color: var(--success); }
.chip-warn { background: color-mix(in srgb, var(--warn) 20%, transparent); color: var(--warn); }
.chip-mc { background: color-mix(in srgb, #a78bfa 20%, transparent); color: #a78bfa; font-weight: 600; }
.chip-crush { background: color-mix(in srgb, #fb923c 20%, transparent); color: #fb923c; font-weight: 600; }
.chip-codex { background: color-mix(in srgb, #10b981 20%, transparent); color: #10b981; font-weight: 600; }
.chip.model { background: var(--accent-subtle); color: var(--accent); }
.state-chip.idle { color: var(--text-2); } .state-chip.working { color: var(--info); background: var(--info-subtle); animation: pulse 1.5s ease-in-out infinite; }
.state-chip.streaming { color: var(--success); background: var(--success-subtle, color-mix(in srgb, #22c55e 15%, transparent)); animation: pulse 1.5s ease-in-out infinite; }
.state-chip.reasoning { color: #a78bfa; background: color-mix(in srgb, #a78bfa 15%, transparent); animation: pulse 1.5s ease-in-out infinite; }
.state-chip.permission_pending { color: var(--warn); background: var(--warn-subtle); }
.state-chip.input_pending { color: var(--accent); background: var(--accent-subtle); }
.state-chip.error { color: var(--danger); background: var(--danger-subtle); }
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:.5; } }

/* === ボタン === */
.btn { display: inline-flex; align-items: center; gap: 5px; padding: 6px 14px; border-radius: var(--radius-sm); border: none; font: inherit; font-size: 13px; font-weight: 500; cursor: pointer; transition: all .15s; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-accent { background: var(--accent); color: #fff; } .btn-accent:hover { background: var(--accent-hover); }
.btn-success { background: var(--success); color: #fff; } .btn-success:hover { opacity: .85; }
.btn-danger { background: var(--danger); color: #fff; } .btn-danger:hover { opacity: .85; }
.btn-ghost { background: transparent; color: var(--text-1); border: 1px solid var(--border); } .btn-ghost:hover { border-color: var(--border-hover); color: var(--text-0); }
.btn-choice { background: var(--bg-2); color: var(--text-0); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 5px 12px; font-size: 13px; cursor: pointer; transition: all .15s; }
.btn-choice:hover { border-color: var(--accent); background: var(--accent-subtle); }
.btn-icon { display: flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: var(--radius-sm); border: none; background: transparent; color: var(--text-1); cursor: pointer; transition: all .15s; }
.btn-icon:hover { background: var(--bg-3); color: var(--text-0); }
.btn-icon-danger:hover { background: var(--danger-subtle); color: var(--danger); }

/* === メインレイアウト === */
#main { display: grid; grid-template-columns: 280px 1fr; flex: 1; min-height: 0; transition: grid-template-columns .3s ease; position: relative; }
#main.sidebar-collapsed { grid-template-columns: 0px 1fr; }
#main.sidebar-collapsed #session-list { overflow: hidden; opacity: 0; pointer-events: none; }
.sidebar-restore { position: absolute; left: 0; top: 50%; transform: translateY(-50%); z-index: 10; border: none; cursor: pointer; background: transparent; padding: 0; }
.sidebar-restore-inner { writing-mode: vertical-rl; padding: 8px 3px; border-radius: 0 6px 6px 0; background: var(--bg-2); border: 1px solid var(--border); border-left: none; font-size: 10px; color: var(--text-2); display: flex; align-items: center; gap: 4px; opacity: 0.6; transition: opacity 0.2s; }
.sidebar-restore:hover .sidebar-restore-inner { opacity: 1; }

/* === サイドバーオーバーレイ（モバイル） === */
.sidebar-overlay { display: none; }
@media (max-width: 768px) {
  .sidebar-overlay { display: none; position: fixed; inset: 0; top: 49px; background: rgba(0,0,0,.4); z-index: 45; backdrop-filter: blur(2px); }
  .sidebar-overlay.visible { display: block; }
}

/* === サイドバー === */
#session-list { background: var(--bg-1); border-right: 1px solid var(--border); overflow-y: auto; display: flex; flex-direction: column; transition: opacity .3s ease; }
.sidebar-header { padding: 12px 14px 8px; display: flex; align-items: center; justify-content: space-between; }
.sidebar-title { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--text-2); }
.sidebar-collapse-btn { opacity: .5; transition: opacity .15s; }
.sidebar-collapse-btn:hover { opacity: 1; }
#sessions-container { flex: 1; padding: 4px 8px; }
.empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; padding: 40px 16px; color: var(--text-2); text-align: center; }
.empty-state.hidden { display: none; }
.empty-state p { font-size: 13px; }

/* === セッションカード === */
.session-card { padding: 10px 12px; border-radius: var(--radius); cursor: pointer; transition: all .12s; border: 1px solid transparent; margin-bottom: 2px; border-left: 3px solid transparent; }
.session-card:hover { background: var(--bg-2); }
.session-card.active { background: var(--accent-subtle); border-color: var(--accent); border-left-color: var(--accent); }
.session-card.stored { opacity: .7; border-left-color: var(--text-2); }
.session-card.stored:hover { opacity: 1; background: var(--bg-2); }
.session-card.stored-pending { opacity: 1; border-left-color: var(--danger); animation: pulse-border 2s ease-in-out infinite; }
@keyframes pulse-border { 0%,100% { border-left-color: var(--danger); } 50% { border-left-color: var(--warn); } }
.session-card.state-working { border-left-color: var(--info); background: var(--info-subtle); animation: card-pulse 2s ease-in-out infinite; }
.session-card.state-permission_pending { border-left-color: var(--warn); }
.session-card.state-input_pending { border-left-color: var(--accent); }
@keyframes card-pulse { 0%,100% { background: transparent; } 50% { background: var(--info-subtle); } }
.session-card-top { display: flex; gap: 5px; margin-bottom: 5px; flex-wrap: wrap; align-items: center; }
.session-menu-btn { margin-left: auto; opacity: 0; transition: opacity .15s; padding: 2px; background: none; border: none; color: var(--text-2); cursor: pointer; flex-shrink: 0; }
.session-card:hover .session-menu-btn { opacity: 1; }
.session-ctx-menu { background: var(--bg-2); border: 1px solid var(--border); border-radius: 6px; padding: 4px; box-shadow: 0 4px 12px rgba(0,0,0,.3); z-index: 1000; min-width: 120px; }
.session-ctx-menu button { display: flex; align-items: center; gap: 6px; width: 100%; padding: 6px 10px; background: none; border: none; color: var(--danger); cursor: pointer; font-size: 13px; border-radius: 4px; }
.session-ctx-menu button:hover { background: var(--bg-3); }
.session-context-menu { position: fixed; z-index: 1000; background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius-sm); box-shadow: 0 4px 12px rgba(0,0,0,.15); padding: 4px; min-width: 120px; }
.ctx-menu-item { display: flex; align-items: center; gap: 6px; width: 100%; padding: 6px 10px; border: none; background: none; color: var(--text-1); font-size: 13px; cursor: pointer; border-radius: 4px; }
.ctx-menu-item:hover { background: var(--bg-2); }
.ctx-menu-item.danger { color: var(--danger, #e5534b); }
.ctx-menu-item.danger:hover { background: rgba(229,83,75,.1); }
.session-title { font-size: 13px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: flex; justify-content: space-between; align-items: baseline; }
.session-age { font-size: 10px; color: var(--text-2); font-weight: 400; flex-shrink: 0; margin-left: 4px; }
.session-meta { font-size: 11px; color: var(--text-2); font-family: var(--mono); }
.session-activity { display: flex; align-items: center; gap: 4px; font-size: 11px; color: var(--info); margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chip.turn-count { background: transparent; color: var(--text-2); font-size: 10px; padding: 1px 4px; }
.chip.tokens { background: transparent; color: var(--text-2); font-size: 10px; padding: 1px 4px; font-family: var(--mono); }
.ctx-bar-wrap { width: 100%; height: 3px; background: var(--bg-3); border-radius: 2px; overflow: hidden; margin-top: 4px; }
.ctx-bar { height: 100%; border-radius: 2px; background: var(--success); transition: width .4s ease, background .4s ease; }
.ctx-bar.low { background: var(--warn); }
.ctx-bar.critical { background: var(--danger); }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.spin { animation: spin 1s linear infinite; }
.session-badge { display: inline-flex; align-items: center; gap: 3px; margin-top: 4px; font-size: 11px; padding: 1px 6px; border-radius: 4px; }
.session-badge.warn { background: var(--warn-subtle); color: var(--warn); }
.session-badge.info { background: var(--accent-subtle); color: var(--accent); }

/* === 保存済みセッションヘッダー === */
.stored-sessions-header { display: flex; align-items: center; gap: 6px; padding: 8px 12px; margin-top: 8px; font-size: 11px; font-weight: 600; color: var(--text-2); cursor: pointer; text-transform: uppercase; letter-spacing: .04em; border-top: 1px solid var(--border); }
.stored-sessions-header:hover { color: var(--text-1); }
.stored-sessions-toggle { font-size: 10px; }

/* === パネルグリッド === */
#welcome-panel.hidden { display: none; }
#welcome-panel { display: flex; align-items: center; justify-content: center; height: 100%; }
.welcome { display: flex; flex-direction: column; align-items: center; gap: 12px; color: var(--text-2); }
.welcome h2 { font-size: 18px; font-weight: 600; color: var(--text-1); }
.welcome p { font-size: 14px; }

.panel-grid { display: grid; height: 100%; min-height: 0; gap: 2px; }
.layout-1x1 { grid-template-columns: 1fr; grid-template-rows: 1fr; }
.layout-1x2 { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr; }
.layout-2x2 { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; }
.panel { display: flex; flex-direction: column; min-height: 0; border: 2px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--bg-0); position: relative; }
.panel.focused { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), 0 0 12px rgba(165, 180, 252, 0.3); }
.panel::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; z-index: 2; background: transparent; transition: background 0.6s ease; }
.panel[data-state="working"]::before { background: linear-gradient(90deg, transparent 0%, #fb923c 50%, transparent 100%); background-size: 200% 100%; animation: neon-sweep 5s ease-in-out infinite; box-shadow: 0 1px 6px #fb923c; }
.panel[data-state="streaming"]::before { background: linear-gradient(90deg, transparent 0%, #fbbf24 50%, transparent 100%); background-size: 200% 100%; animation: neon-sweep 5s ease-in-out infinite; box-shadow: 0 1px 6px #fbbf24; }
.panel[data-state="reasoning"]::before { background: linear-gradient(90deg, transparent 0%, #f472b6 50%, transparent 100%); background-size: 200% 100%; animation: neon-sweep 4s ease-in-out infinite; box-shadow: 0 1px 6px #f472b6; }
.panel[data-state="permission_pending"]::before { background: #60a5fa; box-shadow: 0 1px 6px #60a5fa; }
.panel[data-state="input_pending"]::before { background: #2dd4bf; box-shadow: 0 1px 6px #2dd4bf; }
.panel[data-state="error"]::before { background: var(--danger); box-shadow: 0 1px 6px var(--danger); }
@keyframes neon-sweep { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
.panel-header { position: absolute; top: 0; left: 0; right: 0; z-index: 3; display: flex; align-items: center; justify-content: flex-end; gap: 4px; padding: 1px 4px; pointer-events: none; }
.panel-title-wrap { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; padding-left: 4px; }
.panel-label { font-size: 10px; font-weight: 500; color: var(--text-1); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; opacity: 0; transition: opacity 0.2s; text-shadow: 0 0 4px var(--bg-0); }
.panel:hover .panel-label:not(:empty) { opacity: 0.85; }
.panel.focused .panel-label:not(:empty) { opacity: 0.85; }
.panel-ctx-wrap { width: 100%; height: 2px; border-radius: 999px; overflow: hidden; background: rgba(255,255,255,.12); opacity: 0; transition: opacity .2s; }
.panel-ctx-wrap.hidden { display: none; }
.panel:hover .panel-ctx-wrap:not(.hidden), .panel.focused .panel-ctx-wrap:not(.hidden) { opacity: .9; }
.panel-ctx-bar { height: 100%; width: 0%; border-radius: 999px; background: var(--success); transition: width .3s ease, background .3s ease; }
.panel-ctx-bar.low { background: var(--warn); }
.panel-ctx-bar.critical { background: var(--danger); }
.panel-close { width: 18px; height: 18px; flex-shrink: 0; pointer-events: auto; opacity: 0; transition: opacity 0.2s; }
.panel:hover .panel-close { opacity: 0.6; }
.panel-close:hover { opacity: 1 !important; }
.panel-iframe { flex: 1; border: none; width: 100%; min-height: 0; }
.panel-body { flex: 1; position: relative; min-height: 0; display: flex; }
.panel-overlay { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; color: var(--text-2); cursor: pointer; z-index: 1; background: var(--bg-0); font-size: 13px; }
.panel-overlay:hover { background: var(--bg-1); color: var(--text-1); }
.panel-overlay.hidden { display: none; }

/* レイアウトボタン */
.layout-buttons { display: flex; gap: 4px; align-items: center; }
.layout-btn { padding: 3px 8px; font-size: 11px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: transparent; color: var(--text-2); cursor: pointer; transition: all .15s; width: 32px; height: 32px; }
.layout-btn:hover { border-color: var(--border-hover); color: var(--text-0); background: var(--bg-2); }
.layout-btn.active { background: var(--accent); color: white; border-color: var(--accent); }

#chat-header { display: flex; justify-content: space-between; align-items: center; padding: 8px 16px; border-bottom: 1px solid var(--border); background: var(--bg-1); }
.chat-header-info { display: flex; align-items: center; gap: 8px; }
.chat-header-actions { display: flex; gap: 4px; }
.intent-text { color: var(--text-2); font-size: 12px; }
.stats-text { color: var(--text-2); font-size: 11px; font-family: var(--mono); margin-left: auto; }

/* MC 接続状態 */
.mc-status { font-size: 11px; font-family: var(--mono); margin-left: 8px; padding: 2px 8px; border-radius: 8px; }
.mc-connected { color: #22c55e; background: color-mix(in srgb, #22c55e 15%, transparent); }
.mc-stale { color: #eab308; background: color-mix(in srgb, #eab308 15%, transparent); }
.mc-disconnected { color: #ef4444; background: color-mix(in srgb, #ef4444 15%, transparent); }

/* 活動タイマー */
.activity-timer { font-size: 11px; font-family: var(--mono); color: var(--text-2); margin-left: 8px; }
.activity-timer.stale { color: var(--warn); }
.activity-timer.inactive { color: var(--text-2); opacity: .6; }

/* === メッセージ === */
#chat-messages { flex: 1; min-height: 0; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 16px; }
.message { display: flex; gap: 10px; max-width: 85%; }
.message.user { align-self: flex-end; flex-direction: row-reverse; }
.message-avatar { width: 28px; height: 28px; border-radius: 50%; background: var(--bg-3); display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--text-1); }
.message.user .message-avatar { background: var(--accent-subtle); color: var(--accent); }
.message-bubble { background: var(--bg-2); border-radius: 12px; padding: 10px 14px; font-size: 13.5px; line-height: 1.6; word-break: break-word; }
.message.user .message-bubble { background: var(--accent); color: #fff; }
.message-bubble code { font-family: var(--mono); font-size: .85em; background: rgba(128,128,128,.15); padding: 1px 5px; border-radius: 4px; }
.message-bubble pre.code-block { background: var(--bg-0); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px; margin: 8px 0; overflow-x: auto; position: relative; }
.message-bubble pre.code-block code { background: none; padding: 0; }
.code-lang-label { position: absolute; top: 4px; left: 8px; font-size: 9px; color: var(--text-2); text-transform: uppercase; letter-spacing: .05em; opacity: .7; }

/* === 特殊メッセージ（Permission / ask_user） === */
.message.system { opacity: .85; }
.message.system .message-avatar { color: var(--text-2); }
.message.system .system-bubble { background: var(--bg-2); border: 1px solid var(--border); font-size: 12.5px; }
.message.msg-permission .message-avatar { color: var(--warn); }
.message.msg-approved .message-avatar { color: var(--success); }
.message.msg-denied .message-avatar { color: var(--danger, #e5534b); }
.message.msg-question .message-avatar { color: var(--accent); }
.message.msg-answer .message-avatar { color: var(--info); }
.message.msg-info .message-avatar { color: var(--text-2); }
.message.msg-info .system-bubble { font-size: 11.5px; color: var(--text-2); }

/* === ツール実行イベント === */
.tool-event { margin: 2px 16px 2px 48px; font-size: 12px; color: var(--text-2); }
.tool-event-header { display: flex; align-items: center; gap: 5px; padding: 3px 8px; border-radius: 4px; background: var(--bg-2); border: 1px solid transparent; transition: background .1s; }
.tool-event-header:hover { background: var(--bg-3); }
.tool-label { font-weight: 500; white-space: nowrap; }
.tool-summary { flex: 1; font-family: var(--mono); font-size: 11px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tool-spinner { animation: spin .8s linear infinite; flex-shrink: 0; }
.tool-chevron { flex-shrink: 0; transition: transform .2s; }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.tool-event-detail { margin-top: 4px; }
.tool-event-detail pre { font-family: var(--mono); font-size: 11px; background: var(--bg-0); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 8px; overflow-x: auto; max-height: 300px; overflow-y: auto; white-space: pre-wrap; word-break: break-all; }
.tool-event-detail pre code.hljs { background: transparent; padding: 0; }
.tool-block { margin-bottom: 4px; }
.terminal-block pre { border-left: 3px solid var(--accent); }
.terminal-meta { display: flex; align-items: center; gap: 6px; font-size: 10px; padding: 2px 8px; color: var(--text-2); }
.terminal-cwd { font-family: var(--mono); }
.terminal-exit { font-family: var(--mono); padding: 0 4px; border-radius: 3px; }
.exit-ok { color: var(--success); background: var(--success-subtle); }
.exit-err { color: var(--danger); background: var(--danger-subtle); }
.terminal-meta-line { opacity: .45; font-size: .9em; }
.diff-view { font-family: var(--mono); font-size: 11px; background: var(--bg-0); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 8px; overflow-x: auto; max-height: 300px; overflow-y: auto; white-space: pre-wrap; word-break: break-all; }
.diff-line { display: block; }
.diff-removed { background: var(--danger-subtle); color: var(--danger); }
.diff-added { background: var(--success-subtle); color: var(--success); }
.diff-stat { display: inline-flex; gap: 4px; font-family: var(--mono); font-size: 10px; margin-left: auto; flex-shrink: 0; }
.diff-add { color: var(--success); }
.diff-del { color: var(--danger); }

/* === 思考プロセス（Reasoning） === */
.reasoning-block { margin: 4px 16px 4px 48px; }
.reasoning-block details { font-size: 12px; color: var(--text-2); background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.reasoning-block summary { display: flex; align-items: center; gap: 5px; padding: 5px 10px; cursor: pointer; user-select: none; font-weight: 500; list-style: none; }
.reasoning-block summary::-webkit-details-marker { display: none; }
.reasoning-block summary::before { content: '▸'; font-size: 10px; transition: transform .15s; }
.reasoning-block details[open] summary::before { transform: rotate(90deg); }
.reasoning-label { flex: 1; }
.reasoning-chars { font-size: 10px; font-weight: 400; opacity: .7; }
.reasoning-content { padding: 8px 12px; font-size: 12px; line-height: 1.6; border-top: 1px solid var(--border); max-height: 300px; overflow-y: auto; color: var(--text-1); }

/* === Markdownテーブル・リスト === */
.md-table { border-collapse: collapse; margin: 8px 0; width: 100%; font-size: 12px; }
.md-table th, .md-table td { border: 1px solid var(--border); padding: 4px 8px; text-align: left; }
.md-table th { background: var(--bg-2); font-weight: 600; }
.md-table tr:nth-child(even) { background: var(--bg-1); }
.md-h2 { display: block; font-size: 16px; margin: 8px 0 4px; }
.md-h3 { display: block; font-size: 14px; margin: 6px 0 3px; }
li.md-ol, li.md-ul { margin-left: 20px; margin-bottom: 2px; }
li.md-ol { list-style: decimal; }
li.md-ul { list-style: disc; }
.message-bubble a { color: var(--accent); text-decoration: underline; }
.message-bubble a:hover { color: var(--accent-hover); }
.md-blockquote { border-left: 3px solid var(--accent-subtle); padding: 4px 12px; margin: 4px 0; color: var(--text-1); background: var(--bg-1); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }

/* === メッセージ検索バー === */
.message-search-bar { display: flex; align-items: center; gap: 6px; padding: 6px 12px; background: var(--bg-1); border-bottom: 1px solid var(--border); }
.message-search-bar.hidden { display: none; }
.message-search-bar input { flex: 1; background: var(--input-bg); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-0); padding: 5px 8px; font-size: 12px; }
.message-search-bar input:focus { outline: none; border-color: var(--accent); }
.search-count { font-size: 11px; color: var(--text-2); white-space: nowrap; min-width: 40px; }
.btn-icon-sm { width: 24px; height: 24px; min-width: 24px; padding: 0; }
.search-highlight { background: var(--warn-subtle); border-radius: 2px; outline: 2px solid var(--warn); }
.search-highlight-active { background: var(--warn); color: var(--bg-0); }

/* === コンパクションイベント === */
.message.msg-compaction .message-avatar { color: var(--warn); }
.message.msg-compaction .system-bubble { font-size: 12px; color: var(--text-2); border-color: var(--warn); border-style: dashed; }

/* === エージェントモード === */
.chip.agent-mode { background: rgba(139,92,246,.15); color: #a78bfa; font-size: 11px; }

/* === MCPサーバーステータス === */
.mcp-status { display: flex; gap: 6px; align-items: center; font-size: 11px; }
.mcp-server { display: inline-flex; align-items: center; gap: 2px; white-space: nowrap; }

/* === タイピングインジケーター === */
.typing-bubble { display: flex; align-items: center; gap: 8px; }
.typing-text { color: var(--text-2); font-size: 12px; }
.typing-dots { display: inline-flex; gap: 2px; }
.typing-dots span { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--text-2); animation: typing-bounce 1.4s ease-in-out infinite; }
.typing-dots span:nth-child(2) { animation-delay: .2s; }
.typing-dots span:nth-child(3) { animation-delay: .4s; }
.streaming .streaming-bubble::after { content: '▎'; animation: blink-cursor .8s step-end infinite; color: var(--accent); }
@keyframes blink-cursor { 50% { opacity: 0; } }
@keyframes typing-bounce { 0%,60%,100% { transform: translateY(0); opacity: .4; } 30% { transform: translateY(-4px); opacity: 1; } }

/* === アクションバー === */
.action-bar { padding: 12px 16px; border-top: 1px solid var(--border); background: var(--bg-1); flex-shrink: 0; max-height: 40vh; display: flex; flex-direction: column; }
.action-bar.hidden { display: none; }
.action-bar-content { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 10px; overflow-y: auto; flex-shrink: 1; min-height: 0; }
.action-bar-icon { color: var(--warn); flex-shrink: 0; margin-top: 2px; }
.action-bar.input .action-bar-icon { color: var(--accent); }
.action-bar-text { flex: 1; }
.action-bar-text strong { display: block; margin-bottom: 4px; font-size: 13px; }
.action-bar-text pre { font-family: var(--mono); font-size: 12px; background: var(--bg-0); padding: 8px; border-radius: var(--radius-sm); overflow-x: auto; white-space: pre-wrap; border: 1px solid var(--border); }
.action-bar-buttons { display: flex; gap: 6px; flex-shrink: 0; }
.action-bar-input { display: flex; gap: 8px; align-items: flex-end; flex-shrink: 0; }
.action-bar-input textarea { flex: 1; background: var(--input-bg); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-0); padding: 8px; font: inherit; font-size: 13px; resize: vertical; }
.choices-grid { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }

/* === チャット入力 === */
#chat-input-area { display: flex; gap: 8px; padding: 12px 16px; border-top: 1px solid var(--border); background: var(--bg-1); align-items: flex-end; }
.input-wrapper { flex: 1; }
#chat-input { width: 100%; background: var(--input-bg); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-0); padding: 8px 12px; font: inherit; font-size: 13px; resize: none; transition: border-color .15s; }
#chat-input:focus { outline: none; border-color: var(--accent); }
.input-hint { display: flex; align-items: center; gap: 3px; margin-top: 3px; font-size: 10px; color: var(--warn); }

/* === モーダル === */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.5); display: flex; align-items: center; justify-content: center; z-index: 100; backdrop-filter: blur(4px); }
.modal.hidden { display: none; }
.modal-content { background: var(--bg-1); border: 1px solid var(--border); border-radius: 14px; padding: 24px; min-width: 420px; max-width: 560px; box-shadow: var(--shadow); }
.modal-sm { min-width: 360px; max-width: 440px; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.modal-header h2 { font-size: 16px; font-weight: 600; display: flex; align-items: center; gap: 6px; }
.modal-footer { display: flex; gap: 8px; justify-content: flex-end; margin-top: 18px; }
.modal-body-text { font-size: 13px; color: var(--text-1); margin-bottom: 12px; }
.warn { color: var(--warn); }
.preview-box { background: var(--bg-0); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px; font-size: 13px; max-height: 100px; overflow-y: auto; white-space: pre-wrap; color: var(--text-1); }

/* === フォーム === */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 12px; font-weight: 500; color: var(--text-1); margin-bottom: 4px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; background: var(--input-bg); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-0); padding: 8px 12px; font: inherit; font-size: 13px; transition: border-color .15s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); }

/* === Toast === */
#toast-container { position: fixed; bottom: 16px; right: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 200; }
.toast { padding: 10px 16px; border-radius: var(--radius-sm); font-size: 13px; color: #fff; opacity: 0; transform: translateY(8px); transition: all .3s; box-shadow: var(--shadow); }
.toast.show { opacity: 1; transform: translateY(0); }
.toast-info { background: var(--info); } .toast-success { background: var(--success); }
.toast-error { background: var(--danger); } .toast-warn { background: var(--warn); }

/* === スクロールバー === */
::-webkit-scrollbar { width: 5px; } ::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-2); }

/* === 自動スクロール === */
.scroll-bottom-btn { position: absolute; bottom: 80px; right: 20px; z-index: 10; width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border); background: var(--bg-1); color: var(--text-1); cursor: pointer; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow); transition: all .15s; opacity: 0; pointer-events: none; }
.scroll-bottom-btn.visible { opacity: 1; pointer-events: auto; }
.scroll-bottom-btn:hover { background: var(--bg-2); color: var(--text-0); }

/* === メッセージコピー === */
.msg-copy-btn { position: absolute; top: 4px; right: 4px; width: 24px; height: 24px; border-radius: 4px; border: none; background: var(--bg-3); color: var(--text-2); cursor: pointer; display: none; align-items: center; justify-content: center; font-size: 12px; transition: all .15s; }
.message-bubble:hover .msg-copy-btn { display: flex; }
.msg-copy-btn:hover { background: var(--accent); color: #fff; }
.message-bubble { position: relative; }
.code-block { position: relative; }
.code-copy-btn { position: absolute; top: 4px; right: 4px; width: 24px; height: 24px; border-radius: 4px; border: none; background: var(--bg-2); color: var(--text-2); cursor: pointer; display: none; align-items: center; justify-content: center; font-size: 11px; transition: all .15s; }
.code-block:hover .code-copy-btn { display: flex; }
.code-copy-btn:hover { color: var(--text-0); }

/* === セッションフィルタ === */
.sidebar-filter { display: flex; flex-wrap: wrap; gap: 4px; padding: 0 8px 8px; }
.sidebar-filter input { flex: 1; background: var(--input-bg); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-0); padding: 5px 8px; font-size: 12px; }
.sidebar-filter input:focus { outline: none; border-color: var(--accent); }
.sidebar-filter select { background: var(--input-bg); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-0); padding: 5px; font-size: 11px; }
.source-filter { display: flex; gap: 2px; width: 100%; }
.source-filter-btn { flex: 1; padding: 3px 0; font-size: 11px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--input-bg); color: var(--text-2); cursor: pointer; transition: all 0.15s; }
.source-filter-btn:hover { color: var(--text-0); border-color: var(--accent); }
.source-filter-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* === セッション詳細パネル === */
.session-detail-panel { padding: 12px; border-top: 1px solid var(--border); background: var(--bg-1); }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; font-size: 12px; }
.detail-item { display: flex; flex-direction: column; gap: 2px; }
.detail-label { color: var(--text-2); font-size: 10px; text-transform: uppercase; letter-spacing: .05em; }
.detail-value { color: var(--text-0); font-weight: 500; font-variant-numeric: tabular-nums; }

/* === キーボードショートカットヘルプ === */
.shortcut-help { position: fixed; bottom: 50px; left: 50%; transform: translateX(-50%); background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 20px; z-index: 150; box-shadow: var(--shadow); display: none; }
.shortcut-help.visible { display: block; }
.shortcut-list { display: grid; grid-template-columns: auto auto; gap: 4px 20px; font-size: 12px; }
.shortcut-key { background: var(--bg-3); border: 1px solid var(--border); border-radius: 3px; padding: 1px 5px; font-family: var(--mono); font-size: 11px; }

/* === イベントログ === */
.event-log-panel { display: none; background: var(--bg-0); border-top: 1px solid var(--border); max-height: 200px; overflow-y: auto; }
.event-log-panel.visible { display: block; }
.event-log-entry { font-family: var(--mono); font-size: 11px; padding: 2px 8px; border-bottom: 1px solid var(--bg-2); display: flex; gap: 8px; }
.event-log-time { color: var(--text-2); white-space: nowrap; }
.event-log-type { color: var(--accent); font-weight: 500; min-width: 160px; }
.event-log-data { color: var(--text-1); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* === レスポンシブ: タブレット === */
@media (max-width: 1024px) {
  #main { grid-template-columns: 220px 1fr; }
  .layout-1x2, .layout-2x2 { grid-template-columns: 1fr; }
}

/* === レスポンシブ: スマホ横 === */
@media (max-width: 768px) {
  #header { padding: 6px 10px; gap: 6px; }
  .header-left h1 { display: none; }
  .header-right { gap: 4px; flex-wrap: wrap; justify-content: flex-end; }
  .layout-buttons { display: none; }
  .stats-bar { padding: 4px 10px; gap: 8px; overflow-x: auto; }
  .stat-card { white-space: nowrap; flex-shrink: 0; }
  #main { grid-template-columns: 1fr; }
  /* サイドバー: オーバーレイスライドイン */
  #session-list { position: fixed; left: 0; top: 49px; bottom: 0; width: min(280px, 85vw); z-index: 50; transform: translateX(-100%); transition: transform .2s; }
  #session-list.open { transform: translateX(0); box-shadow: 4px 0 16px rgba(0,0,0,.3); }
  /* モーダル */
  .modal-content { min-width: unset; max-width: 95vw; margin: 0 8px; padding: 16px; }
  .modal-sm { min-width: unset; }
  .modal-header h2 { font-size: 15px; }
  /* メッセージ */
  .message { max-width: 95%; }
  #chat-messages, #sv-messages { padding: 10px 8px; gap: 10px; }
  .message-bubble { padding: 8px 10px; font-size: 13px; }
  /* ツールイベント */
  .tool-event { margin: 2px 4px 2px 32px; }
  .reasoning-block { margin: 4px 4px 4px 32px; }
  /* アクションバー */
  .action-bar { padding: 8px 10px; }
  .action-bar-buttons { flex-wrap: wrap; gap: 4px; }
  .action-bar-input { flex-direction: column; }
  .action-bar-input textarea { width: 100%; }
  .action-bar-text pre { font-size: 11px; padding: 6px; }
  /* チャット入力 */
  #chat-input-area { padding: 8px 10px; }
  #sv-input-area { padding: 4px 6px; }
  /* クォータポップオーバー */
  .quota-popover { right: -40px; min-width: 240px; }
  /* Toast */
  #toast-container { bottom: 8px; right: 8px; left: 8px; }
  .toast { font-size: 12px; padding: 8px 12px; }
  /* ショートカットヘルプ */
  .shortcut-help { left: 8px; right: 8px; transform: none; bottom: 60px; }
  .shortcut-list { font-size: 11px; gap: 3px 12px; }
  /* 「新規セッション」ボタン: テキスト非表示、アイコンのみ */
  #btn-new-session { padding: 6px 8px; font-size: 0; }
  #btn-new-session .icon-xs { width: 16px; height: 16px; }
  /* コードブロック */
  .message-bubble pre.code-block { padding: 8px 6px; font-size: 11px; }
  .code-lang-label { font-size: 8px; }
  /* セッション詳細 */
  .detail-grid { grid-template-columns: 1fr; }
}

/* === レスポンシブ: スマホ縦 === */
@media (max-width: 480px) {
  #header { padding: 4px 8px; min-height: 40px; }
  .header-right { gap: 2px; }
  .icon-sm { width: 16px; height: 16px; }
  /* クォータバッジ: 数字非表示、バーのみ */
  .quota-badge { padding: 3px 6px; gap: 4px; }
  #quota-text { display: none; }
  .quota-popover { position: fixed; left: 8px; right: 8px; top: 50px; min-width: unset; width: auto; }
  .quota-popover .popover-arrow { display: none; }
  /* 接続インジケーター: テキスト非表示 */
  .conn span { display: none; }
  .conn { padding: 3px 6px; }
  /* サイドバー: 全幅 */
  #session-list { width: 100vw; }
  /* セッションカード: タッチフレンドリー */
  .session-card { padding: 12px; }
  .session-menu-btn { opacity: 1; }
  /* チップ・バッジ: モバイル可読性向上 */
  .chip { font-size: 12px; padding: 3px 8px; }
  .session-badge { font-size: 12px; padding: 3px 8px; }
  .session-card-top { gap: 4px; }
  .state-chip { font-size: 12px; }
  /* ソースフィルタ: タップフレンドリー */
  .source-filter-btn { padding: 8px 0; font-size: 12px; min-height: 36px; }
  /* メッセージ: 全幅活用 */
  .message { max-width: 100%; }
  .message-avatar { width: 24px; height: 24px; }
  .message { gap: 6px; }
  .message-bubble { font-size: 12.5px; padding: 7px 9px; border-radius: 10px; }
  /* session.html ヘッダー内チップ: 横スクロール */
  #sv-header { flex-wrap: nowrap; gap: 4px; padding: 3px 6px; }
  #sv-header .stats-text { width: auto; }
  /* アクションバーボタン: フル幅 */
  .action-bar-buttons { width: 100%; }
  .action-bar-buttons .btn { flex: 1; justify-content: center; }
  /* 選択肢グリッド */
  .choices-grid { flex-direction: column; }
  .btn-choice { width: 100%; text-align: left; padding: 8px 12px; min-height: 40px; }
  /* イベントログ */
  .event-log-entry { flex-direction: column; gap: 2px; padding: 4px 6px; }
  .event-log-type { min-width: unset; }
  /* フォーム */
  .form-group input, .form-group select, .form-group textarea { padding: 10px; font-size: 16px; }
  /* コンテキストメニュー */
  .session-ctx-menu { min-width: 150px; }
  .session-ctx-menu button { padding: 10px 12px; }
  /* フィルタ */
  .sidebar-filter { flex-direction: column; gap: 6px; }
  .sidebar-filter input { width: 100%; }
}

/* === タッチデバイス最適化 === */
@media (hover: none) and (pointer: coarse) {
  /* タッチターゲット最小 44px */
  .btn { min-height: 44px; }
  .btn-sm { min-height: 36px; }
  .btn-icon { min-width: 44px; min-height: 44px; }
  .session-card { padding: 12px; }
  .session-menu-btn { opacity: 1; min-width: 44px; min-height: 44px; }
  .chrome-restore-inner { min-height: 44px; min-width: 44px; justify-content: center; opacity: 0.8; }
  .scroll-bottom-btn { min-width: 44px; min-height: 44px; }
  #sv-timeline-btn { min-width: 44px; min-height: 44px; }
  /* ホバー効果を無効化してタップフィードバックに置換 */
  .session-card:hover { background: transparent; }
  .session-card:active { background: var(--bg-2); }
  .btn:active { opacity: .8; }
  .btn-icon:active { background: var(--bg-3); }
  .chrome-restore:active .chrome-restore-inner { opacity: 1; background: var(--bg-3); }
  /* コピーボタン常時表示（ホバー不可のため） */
  .msg-copy-btn { display: flex; }
  .code-copy-btn { display: flex; }
  /* スクロールバー非表示（ネイティブスクロール） */
  ::-webkit-scrollbar { display: none; }
  * { scrollbar-width: none; }
}

/* === サイドバートグル === */
.sidebar-toggle { display: none; }
.sidebar-toggle-btn { display: flex; }
@media (max-width: 768px) {
  .panel-ctx-wrap { display: none !important; }
  .sidebar-toggle { display: flex; }
}

/* === 履歴読み込みインジケーター === */
.load-more-indicator {
  display: flex; justify-content: center; padding: 8px;
  border-bottom: 1px solid var(--border);
}
.load-more-indicator .btn-sm {
  font-size: 0.75rem; padding: 4px 12px;
  background: var(--surface-hover); border: 1px solid var(--border);
  border-radius: 4px; cursor: pointer; color: var(--text);
}
.load-more-indicator .text-muted {
  font-size: 0.75rem; color: var(--text-secondary);
}