:root{--bg: #0f172a;--bg-soft: #111827;--panel: #ffffff;--border: #e5e7eb;--border-strong: #d1d5db;--text: #111827;--text-soft: #6b7280;--primary: #6366f1;--surface-soft: #f9fafb;--surface-muted: #f3f4f6}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,sans-serif;background:#f5f7fb;color:var(--text)}.app-shell{display:flex;height:100vh;min-width:0}.sidebar{background:linear-gradient(180deg,#0f172a,#020617);color:#fff;padding:24px 16px;display:flex;flex-direction:column;flex:0 0 auto;overflow-y:auto}.brand-block{display:flex;gap:12px;align-items:center;margin-bottom:24px}.brand-badge{width:40px;height:40px;min-width:40px;background:var(--primary);border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;color:#fff}.brand-title{font-weight:600;font-size:14px}.brand-subtitle{font-size:11px;color:#94a3b8;margin-top:2px}.nav-menu{display:flex;flex-direction:column;gap:4px}.nav-item{background:transparent;border:none;color:#cbd5e1;padding:10px 12px;border-radius:8px;text-align:left;cursor:pointer;font-size:13px;font-family:inherit;display:flex;align-items:center;transition:background .12s}.nav-item:hover{background:#1e293b;color:#f1f5f9}.nav-item.active{background:#1e293b;color:#fff;font-weight:600}.main-content{flex:1;min-width:0;padding:28px 32px;overflow:auto}.page-header{margin-bottom:20px}.page-header h1{margin:4px 0 0;font-size:22px;font-weight:700;color:#101828}.eyebrow{font-size:12px;color:var(--text-soft);margin:0;text-transform:uppercase;letter-spacing:.04em}.content-panel{background:var(--panel);border-radius:16px;padding:20px;border:1px solid var(--border)}.btn-primary{height:34px;padding:0 16px;border-radius:8px;border:none;background:#111827;color:#fff;font-size:13px;font-weight:600;cursor:pointer;font-family:inherit;transition:background .12s}.btn-primary:hover:not(:disabled){background:#1f2937}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{height:34px;padding:0 14px;border-radius:8px;border:1px solid #d0d5dd;background:#fff;color:#344054;font-size:13px;font-weight:500;cursor:pointer;font-family:inherit;transition:background .12s}.btn-ghost:hover{background:#f9fafb}