:root{--bg: #f7fbf9;--card: #ffffff;--muted: #6b7280;--accent: #0b8457;--accent-2: #04673b;--surface: #ecf9f3;--text: #0f172a;--sidebar-bg: #ffffff;--shadow: 0 6px 18px rgba(3,15,10,.06)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;font-family:Inter,system-ui,sans-serif}a{color:inherit;text-decoration:none}.app{display:flex;min-height:100vh;background:var(--bg);color:var(--text)}.sidebar{width:260px;background:linear-gradient(180deg,var(--sidebar-bg),var(--surface));border-right:1px solid rgba(15,23,42,.04);padding:18px;display:flex;flex-direction:column;gap:12px;transition:width .25s ease;box-shadow:var(--shadow);overflow:hidden}.app.collapsed .sidebar{width:72px}.brand{display:flex;align-items:center;justify-content:space-between}.logo{font-weight:700;font-size:20px;color:var(--accent);white-space:nowrap;overflow:hidden;transition:opacity .2s ease}.app.collapsed .logo{opacity:0;width:0}.logo span{color:var(--accent-2)}.collapse-icon{background:transparent;border:none;cursor:pointer;font-size:14px;opacity:.7;transition:transform .25s ease;flex-shrink:0}.app.collapsed .collapse-icon{transform:rotate(180deg)}.nav{display:flex;flex-direction:column;gap:6px;margin-top:6px}.nav-link{padding:10px 12px;border-radius:10px;color:var(--muted);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:all .25s ease}.app.collapsed .nav-link{padding:10px;text-indent:-9999px;position:relative}.app.collapsed .nav-link:before{content:attr(data-initial);position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-indent:0;font-size:16px;font-weight:700}.nav-link.active{background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 6px 18px #065f3d1f}.sidebar-footer{margin-top:auto;white-space:nowrap;overflow:hidden;transition:opacity .2s ease}.app.collapsed .sidebar-footer{opacity:0}.main-content{flex:1;display:flex;flex-direction:column;min-height:100vh}.topbar{height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid rgba(15,23,42,.04)}.collapse-btn{font-size:20px;background:transparent;border:none;cursor:pointer}.top-right{display:flex;gap:12px;align-items:center}.user-pill{background:var(--card);padding:8px 12px;border-radius:999px;box-shadow:var(--shadow)}.page-area{padding:20px}h2{margin:0 0 12px}p{margin:0;color:var(--muted)}@media (max-width: 900px){.sidebar{position:fixed;left:0;top:0;bottom:0;z-index:40;transform:translate(0);width:220px}.app.collapsed .sidebar{transform:translate(-100%)}.main-content{margin-left:0}}