:root{--bg-primary: #2979ff;--bg-primary-hover: #2962ff;--bg-sidebar: #f9fafb;--bg-main: #ffffff;--bg-hover: #f0f1f3;--bg-user: #e8f0fe;--bg-assistant: #f7f8fa;--bg-code: #1e1e2e;--bg-success: #22c55e;--bg-danger: #dc2626;--bg-warning: #fef3c7;--text-primary: #111827;--text-secondary: #4b5563;--text-muted: #9ca3af;--text-accent: #2979ff;--text-code: #abb2bf;--border-color: #e5e7eb;--accent-light: #e8f0fe;--shadow-sm: 0 1px 2px rgba(0,0,0,.05);--shadow-md: 0 4px 12px rgba(0,0,0,.08);--radius-sm: 8px;--radius-md: 12px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;font-size:16px;line-height:1.5;color:var(--text-primary);background-color:#fff}@media(prefers-color-scheme:dark){:root{--bg-primary: #4da6ff;--bg-primary-hover: #3399ff;--bg-sidebar: #111827;--bg-main: #0f172a;--bg-hover: #1f2937;--bg-user: #1e3a5f;--bg-assistant: #172033;--text-primary: #f3f4f6;--text-secondary: #cbd5e1;--text-muted: #64748b;--text-accent: #4da6ff;--border-color: #263244;--accent-light: #102a4d;background-color:#0f172a}}*{box-sizing:border-box;margin:0;padding:0}html,body,#app{height:100%}.app-container[data-v-71d2cc9b]{display:flex;height:100vh;overflow:hidden}.sidebar[data-v-71d2cc9b]{width:260px;min-width:260px;background:var(--bg-sidebar);border-right:1px solid var(--border-color);display:flex;flex-direction:column}.sidebar-header[data-v-71d2cc9b]{padding:1rem;border-bottom:1px solid var(--border-color)}.logo[data-v-71d2cc9b]{display:flex;align-items:center;gap:.7rem;font-size:1rem;font-weight:700;color:var(--text-primary);margin:0}.brand-logo[data-v-71d2cc9b]{flex:none}.nav-list[data-v-71d2cc9b]{list-style:none;padding:.6rem;flex:1}.nav-item[data-v-71d2cc9b]{display:flex;align-items:center;gap:.7rem;min-height:42px;padding:0 .7rem;border-radius:var(--radius-sm);color:var(--text-secondary);text-decoration:none;font-size:.9rem;transition:background .15s,color .15s,border-color .15s}.nav-item[data-v-71d2cc9b]:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-item.active[data-v-71d2cc9b]{background:var(--accent-light);color:var(--text-accent);font-weight:600}.nav-icon[data-v-71d2cc9b]{display:inline-grid;place-items:center;width:24px;height:24px;color:currentColor}.sidebar-footer[data-v-71d2cc9b]{padding:1rem;border-top:1px solid var(--border-color)}.admin-user[data-v-71d2cc9b]{display:grid;gap:.5rem;font-size:.85rem;color:var(--text-secondary)}.admin-user button[data-v-71d2cc9b]{min-height:34px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background:var(--bg-main);color:var(--text-secondary);cursor:pointer}.admin-user button[data-v-71d2cc9b]:hover{border-color:var(--text-accent);color:var(--text-accent);background:var(--accent-light)}.main-content[data-v-71d2cc9b]{flex:1;overflow-y:auto;background:var(--bg-main)}.main-content.login-content[data-v-71d2cc9b]{padding:0}