:root{
  --bg1: #0b0012;
  --bg2: #2a003f;
  --accent1: #7d3cff;
  --accent2: #bb82ff;
  --muted: #cfc2e6;
  --card-bg: rgba(255,255,255,0.03);
  --glass: rgba(255,255,255,0.04);
  --white-opaque: rgba(255,255,255,0.9);
  --shadow: 0 10px 30px rgba(0,0,0,0.6);
}

*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:Inter,Arial,sans-serif;background:linear-gradient(180deg,var(--bg2),#12001a);color:#fff}
.screen{width:100%;height:100%}
.hidden{display:none}
button{cursor:pointer}
.btn{border:0;padding:8px 12px;border-radius:8px;background:transparent;color:var(--white-opaque)}
.btn.primary{background:linear-gradient(90deg,var(--accent1),var(--accent2));color:#070014;font-weight:800;box-shadow:0 8px 30px rgba(125,60,255,0.12)}

/* Layout */
.app-shell{display:flex;min-height:100vh}
.sidebar{width:250px;flex-shrink:0;padding:18px;background:linear-gradient(180deg,#150021,#2a003f);display:flex;flex-direction:column}
.main{flex:1;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;border-bottom:1px solid rgba(255,255,255,0.03)}
.search{padding:8px;border-radius:10px;border:1px solid rgba(255,255,255,0.04);background:transparent;color:#fff;min-width:180px}
.view-container{padding:18px;max-width:1200px;margin:0 auto;width:100%}

/* Login */
.login-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:16px}
.login-card{width:100%;max-width:480px;background:var(--card-bg);padding:28px;border-radius:12px;border:1px solid rgba(255,255,255,0.04);text-align:center;backdrop-filter: blur(6px)}
.login-logo{width:120px;height:120px;object-fit:cover;border-radius:12px;margin-bottom:12px}
.login-title{font-size:28px;color:var(--accent2);margin:6px 0}
.login-sub{opacity:0.9;margin-bottom:18px}
.login-form input{width:100%;padding:10px;border-radius:10px;border:0;margin:8px 0;background:var(--glass);color:#fff}
.login-form .btn{width:100%;padding:12px;margin-top:6px}

/* Sidebar */
.brand{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.brand-logo{width:56px;height:56px;border-radius:10px;object-fit:cover}
.brand-title{font-weight:900}
.nav{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.nav-btn{padding:10px;border-radius:10px;border:0;background:transparent;text-align:left;color:var(--muted);font-weight:700}
.nav-btn.active{background:linear-gradient(90deg,var(--accent1),var(--accent2));color:#fff}

/* Cards */
.card{background:linear-gradient(180deg,rgba(255,255,255,0.02),rgba(0,0,0,0.03));padding:12px;border-radius:12px;border:1px solid rgba(255,255,255,0.03);box-shadow:var(--shadow)}

/* Responsive */
@media (max-width:900px){
  .sidebar{position:fixed;left:-280px;top:0;height:100vh;z-index:1000;transition:left .28s}
  .sidebar.open{left:0}
  .app-shell{padding-left:0}
}