:root{
  --bg:#0b1220;
  --card:#111b2e;
  --muted:#95a3b8;
  --text:#e8eefc;
  --accent:#4f8cff;
  --accent2:#63d5b5;
  --border:rgba(255,255,255,.08);
  --shadow: 0 20px 60px rgba(0,0,0,.35);
  --radius:16px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  background:
    radial-gradient(1200px 700px at 20% 0%, rgba(79,140,255,.25), transparent 60%),
    radial-gradient(900px 600px at 80% 10%, rgba(99,213,181,.18), transparent 55%),
    var(--bg);
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:28px;
}

.container{
  width: min(980px, 100%);
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap:18px;
}

@media (max-width: 860px){
  .container{grid-template-columns:1fr}
}

.card{
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow: var(--shadow);
  padding:22px;
  backdrop-filter: blur(10px);
}

.h1{
  font-size:28px;
  margin:0 0 6px;
  letter-spacing:.2px;
}
.sub{
  margin:0 0 18px;
  color:var(--muted);
  line-height:1.45;
}

.badge{
  display:inline-flex;
  gap:8px;
  align-items:center;
  padding:8px 10px;
  border:1px solid var(--border);
  border-radius:999px;
  color:var(--muted);
  font-size:13px;
  margin-bottom:14px;
}

.grid{
  display:grid;
  gap:14px;
}

.label{
  font-size:13px;
  color:var(--muted);
  margin-bottom:6px;
  display:block;
}

.input{
  width:100%;
  padding:12px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  background: rgba(0,0,0,.18);
  color:var(--text);
  outline:none;
}
.input:focus{
  border-color: rgba(79,140,255,.7);
  box-shadow: 0 0 0 4px rgba(79,140,255,.18);
}

.row{
  display:flex;
  gap:12px;
  align-items:center;
}

.btn{
  width:100%;
  padding:12px 14px;
  border:0;
  border-radius:12px;
  cursor:pointer;
  color:#06101f;
  font-weight:650;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}
.btn:hover{filter:brightness(1.05)}
.btn:active{transform:translateY(1px)}

.note{
  color:var(--muted);
  font-size:13px;
  line-height:1.45;
}

.topbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  margin-bottom:14px;
}

.link{
  color:var(--text);
  text-decoration:none;
  border-bottom:1px dashed rgba(255,255,255,.25);
}
.link:hover{border-bottom-color: rgba(255,255,255,.6)}

.flash{
  border:1px solid rgba(255,120,120,.35);
  background: rgba(255,120,120,.12);
  color: #ffd0d0;
  padding:10px 12px;
  border-radius:12px;
  font-size:14px;
}

/* === LAYOUT SE SIDEBAR === */

.app-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 20px;
  width: min(1200px, 100%);
}

@media (max-width: 900px) {
  .app-layout {
    grid-template-columns: 1fr;
  }
}

.sidebar {
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.menu-title {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.menu-item {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  margin-bottom: 6px;
}

.menu-item:hover {
  background: rgba(255,255,255,.06);
}

.menu-item.active {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: #06101f;
  font-weight: 600;
}

.submenu {
  margin-left: 10px;
  margin-top: 6px;
}