:root{
  --pink:#C8187A; --violet:#7B2D8B; --blue:#2B7CC1; --blue-light:#5BBCD9;
  --orange:#E8630A; --dark:#0a0f1c; --dark2:#111827;
  --off:#F3F6FB; --text:#1e2a3a; --muted:#64748b; --border:#e2e8f0;
  --r:14px; --tr:all .2s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Segoe UI',Arial,sans-serif;background:var(--off);color:var(--text);}
a{color:var(--violet);text-decoration:none;}
a:hover{text-decoration:underline;}

/* LAYOUT */
.app-shell{display:flex;min-height:100vh;}
.sidebar{width:250px;flex-shrink:0;background:var(--dark);color:#fff;padding:1.5rem 1rem;position:sticky;top:0;height:100vh;overflow-y:auto;}
.sidebar .brand{font-weight:800;font-size:1.2rem;margin-bottom:.3rem;}
.sidebar .brand span{color:var(--pink);}
.sidebar .role-tag{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:rgba(255,255,255,.5);margin-bottom:1.6rem;}
.sidebar nav a{display:block;color:rgba(255,255,255,.7);padding:.6rem .8rem;border-radius:10px;font-size:.9rem;margin-bottom:.2rem;}
.sidebar nav a:hover,.sidebar nav a.active{background:rgba(255,255,255,.08);color:#fff;text-decoration:none;}
.sidebar .logout{margin-top:2rem;display:block;color:rgba(255,255,255,.5);font-size:.82rem;}
.main{flex:1;padding:2rem clamp(1rem,3vw,2.5rem);max-width:1400px;}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.6rem;flex-wrap:wrap;gap:1rem;}
.topbar h1{font-size:1.5rem;font-weight:800;}
.user-chip{background:#fff;border:1px solid var(--border);border-radius:100px;padding:.4rem .9rem;font-size:.85rem;display:flex;align-items:center;gap:.5rem;}

/* CARDS */
.card{background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:1.4rem;margin-bottom:1.2rem;box-shadow:0 2px 10px rgba(0,0,0,.03);}
.card h2,.card h3{margin-bottom:.8rem;}
.grid{display:grid;gap:1.2rem;}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));}

.stat-card{background:linear-gradient(135deg,var(--pink),var(--violet));color:#fff;border-radius:var(--r);padding:1.3rem;}
.stat-card .num{font-size:2rem;font-weight:800;}
.stat-card .lbl{font-size:.8rem;opacity:.85;}
.stat-card.blue{background:linear-gradient(135deg,var(--blue),var(--blue-light));}
.stat-card.dark{background:linear-gradient(135deg,#1a2236,#0a0f1c);}

/* TABLES */
table{width:100%;border-collapse:collapse;font-size:.9rem;}
th,td{text-align:left;padding:.65rem .7rem;border-bottom:1px solid var(--border);}
th{background:var(--off);font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);}
tr:hover td{background:#fafbfe;}

/* FORMS */
label{display:block;font-size:.82rem;font-weight:600;margin-bottom:.3rem;color:var(--text);}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],input[type=datetime-local],select,textarea{
  width:100%;padding:.6rem .8rem;border:1.5px solid var(--border);border-radius:10px;font-size:.9rem;font-family:inherit;margin-bottom:1rem;background:#fff;
}
textarea{min-height:100px;resize:vertical;}
.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;}

.btn{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,var(--pink),var(--violet));color:#fff;border:none;padding:.65rem 1.3rem;border-radius:10px;font-weight:700;font-size:.88rem;cursor:pointer;transition:var(--tr);}
.btn:hover{opacity:.9;text-decoration:none;color:#fff;}
.btn.secondary{background:linear-gradient(135deg,var(--blue),var(--blue-light));}
.btn.ghost{background:transparent;border:1.5px solid var(--border);color:var(--text);}
.btn.danger{background:#c62828;}
.btn.sm{padding:.4rem .8rem;font-size:.78rem;}

.badge{display:inline-block;font-size:.72rem;font-weight:700;padding:.2rem .6rem;border-radius:100px;}

/* PROGRESS BAR */
.progress-bar{background:var(--border);border-radius:100px;height:10px;overflow:hidden;}
.progress-bar > div{height:100%;background:linear-gradient(90deg,var(--pink),var(--violet));border-radius:100px;}

/* ALERTS */
.alert{padding:.9rem 1.1rem;border-radius:10px;margin-bottom:1.2rem;font-size:.88rem;}
.alert.success{background:#e8f5e9;color:#2e7d32;border:1px solid #c8e6c9;}
.alert.error{background:#ffebee;color:#c62828;border:1px solid #ffcdd2;}
.alert.info{background:#e3f2fd;color:#1565c0;border:1px solid #bbdefb;}

/* LOGIN */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(160deg,#0c0818,#150c26,#0a1220);padding:1.5rem;}
.login-card{background:#fff;border-radius:20px;padding:2.4rem;max-width:400px;width:100%;box-shadow:0 20px 60px rgba(0,0,0,.4);}
.login-card h1{font-size:1.3rem;text-align:center;margin-bottom:.3rem;}
.login-card .sub{text-align:center;color:var(--muted);font-size:.85rem;margin-bottom:1.6rem;}
.login-card .btn{width:100%;justify-content:center;}

/* QUIZ */
.question-block{border:1.5px solid var(--border);border-radius:12px;padding:1.1rem;margin-bottom:1rem;}
.question-block .qnum{font-size:.72rem;font-weight:800;text-transform:uppercase;color:var(--violet);margin-bottom:.4rem;}
.opt-row{display:flex;align-items:center;gap:.5rem;padding:.4rem 0;}

@media(max-width:800px){
  .app-shell{flex-direction:column;}
  .sidebar{width:100%;height:auto;position:relative;}
}