:root{--color-bg: #f5f6fa;--color-surface: #ffffff;--color-border: #e5e7eb;--color-border-strong: #d8dade;--color-text: #16181d;--color-text-muted: #6b7280;--color-text-faint: #9ca3af;--color-primary: #4f46e5;--color-primary-dark: #4338ca;--color-primary-soft: #eef2ff;--color-success: #059669;--color-success-soft: #ecfdf5;--color-success-border: #a7f3d0;--color-danger: #dc2626;--color-danger-soft: #fef2f2;--color-danger-border: #fecaca;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);--shadow-md: 0 12px 28px rgba(15, 23, 42, .08);--sidebar-width: 248px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:Inter,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased}h1,h2,h3{font-weight:600;letter-spacing:-.01em}.app-layout{display:flex;min-height:100vh}.sidebar{position:fixed;top:0;bottom:0;left:0;width:var(--sidebar-width);background:var(--color-surface);border-right:1px solid var(--color-border);display:flex;flex-direction:column;padding:22px 14px}.sidebar-brand{display:flex;align-items:center;gap:10px;padding:4px 8px 28px}.brand-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--color-primary),#8b5cf6);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px;flex-shrink:0}.brand-text strong{display:block;font-size:14.5px;line-height:1.3}.brand-text span{display:block;font-size:12px;color:var(--color-text-muted)}.sidebar-nav{flex:1;display:flex;flex-direction:column;gap:2px}.sidebar-link{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--radius-sm);color:var(--color-text-muted);text-decoration:none;font-size:14px;font-weight:500;transition:background .15s ease,color .15s ease}.sidebar-link:hover{background:#f3f4f6;color:var(--color-text)}.sidebar-link.active{background:var(--color-primary-soft);color:var(--color-primary)}.sidebar-link svg{width:18px;height:18px;flex-shrink:0}.sidebar-footer{border-top:1px solid var(--color-border);padding-top:14px;margin-top:14px}.sidebar-footer svg{width:16px;height:16px}.sidebar-user{font-size:12.5px;color:var(--color-text-muted);padding:0 8px 10px;word-break:break-all}.main-content{margin-left:var(--sidebar-width);flex:1;padding:40px 44px}.content-inner{max-width:880px}.page-header{margin-bottom:26px}.page-header h1{font-size:21px;margin:0 0 6px}.page-header p{margin:0;color:var(--color-text-muted);font-size:14px;line-height:1.5}.page-header-row{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.page-header-row button{flex-shrink:0}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:26px 28px;box-shadow:var(--shadow-sm);margin-bottom:20px}.card h2{font-size:16px;margin:0 0 4px}.card>p:first-of-type{margin-top:0}.card-subtitle{color:var(--color-text-muted);font-size:13.5px;margin:0 0 18px}label{display:block;font-weight:600;font-size:13px;color:var(--color-text);margin-bottom:6px}input,textarea,select{width:100%;padding:10px 12px;margin-bottom:16px;border:1px solid var(--color-border-strong);border-radius:var(--radius-sm);font-size:14px;font-family:inherit;color:var(--color-text);background:var(--color-surface);transition:border-color .15s ease,box-shadow .15s ease}textarea{resize:vertical;line-height:1.5}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-soft)}input::placeholder,textarea::placeholder{color:var(--color-text-faint)}button{background:var(--color-primary);color:#fff;border:none;padding:10px 18px;border-radius:var(--radius-sm);cursor:pointer;font-size:14px;font-weight:600;transition:background .15s ease,transform .05s ease}button:hover{background:var(--color-primary-dark)}button:active{transform:translateY(1px)}button:disabled{opacity:.6;cursor:not-allowed}button.button-block{width:100%}button.button-ghost{background:transparent;color:var(--color-text-muted);border:1px solid var(--color-border-strong)}button.button-ghost:hover{background:#f3f4f6;color:var(--color-text)}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.4}.badge-success{background:var(--color-success-soft);color:var(--color-success);border:1px solid var(--color-success-border)}.badge-danger{background:var(--color-danger-soft);color:var(--color-danger);border:1px solid var(--color-danger-border)}.badge-neutral{background:#f3f4f6;color:var(--color-text-muted);border:1px solid var(--color-border)}.alert{padding:12px 14px;border-radius:var(--radius-sm);font-size:13.5px;margin-bottom:16px;line-height:1.5}.alert.success{background:var(--color-success-soft);color:var(--color-success);border:1px solid var(--color-success-border)}.alert.error,.error{background:var(--color-danger-soft);color:var(--color-danger);border:1px solid var(--color-danger-border);padding:10px 14px;border-radius:var(--radius-sm);font-size:13.5px;margin-bottom:16px}.table-wrap{border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden}table{width:100%;border-collapse:collapse;font-size:13.5px}th{text-align:left;padding:11px 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p{margin:0;color:var(--color-text-muted);font-size:13.5px}.chat-window{display:flex;flex-direction:column;padding:0;overflow:hidden;height:560px}.chat-messages{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:14px}.chat-empty{margin:auto;text-align:center;max-width:340px;color:var(--color-text-muted);display:flex;flex-direction:column;gap:6px}.chat-empty strong{color:var(--color-text);font-size:14.5px}.chat-empty span{font-size:13.5px;line-height:1.5}.chat-bubble-row{display:flex;flex-direction:column;gap:10px;max-width:78%}.chat-bubble-row.user{align-self:flex-end;align-items:flex-end}.chat-bubble-row.assistant{align-self:flex-start;align-items:flex-start}.chat-bubble{padding:10px 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button{flex-shrink:0;width:44px;height:44px;padding:0;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm)}.chat-input-bar button svg{width:18px;height:18px}.combo-card{width:100%;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:16px 18px;box-shadow:var(--shadow-sm)}.combo-card-title{font-weight:600;font-size:13.5px;margin-bottom:10px}.combo-card-total{margin-top:12px;font-weight:700;font-size:14.5px;text-align:right}