:root{
  --navy:#122A3A;
  --navy-2:#1B3A4E;
  --cream:#F6F3EC;
  --card:#FFFFFF;
  --gold:#D9A441;
  --ink:#152227;
  --muted:#6B7B80;
  --green:#2F7D5E;
  --green-bg:#E7F2EC;
  --amber:#B8790A;
  --amber-bg:#FBF0DD;
  --red:#B3403A;
  --red-bg:#FBEAE8;
  --line:#E7E2D6;
}
*{box-sizing:border-box;}
body{
  margin:0; font-family:'Inter',sans-serif; background:var(--cream); color:var(--ink);
  display:flex; min-height:100vh;
}
.sidebar{
  width:250px; background:var(--navy); color:#EAF1F0; flex-shrink:0;
  display:flex; flex-direction:column; padding:28px 20px; position:fixed; top:0; bottom:0;
}
.brand{ display:flex; align-items:center; gap:10px; margin-bottom:38px; }
.brand .mark{
  width:40px;height:40px;border-radius:10px;flex-shrink:0;
}
.brand .name{ font-family:'Sora',sans-serif; font-weight:700; font-size:16px; letter-spacing:.2px;}
.brand .sub{ font-size:11px; color:#9FB4B0; letter-spacing:.12em; text-transform:uppercase;}
nav{ display:flex; flex-direction:column; gap:2px; margin-top:6px;}
nav a{
  color:#C9D8D4; text-decoration:none; font-size:14px; font-weight:500;
  padding:11px 12px; border-radius:8px; display:flex; align-items:center; gap:10px;
}
nav a .dot{width:6px;height:6px;border-radius:50%;background:#4C6B69;}
nav a.active{ background:rgba(217,164,65,.14); color:#F3E4C4; }
nav a.active .dot{ background:var(--gold); }
nav a:hover:not(.active){ background:rgba(255,255,255,.05); }
.sidebar-foot{ margin-top:auto; font-size:12px; color:#7C918E; line-height:1.5; }

main{ flex:1; padding:34px 42px; max-width:1180px; margin-left:250px; }
.topbar{ display:flex; justify-content:space-between; align-items:flex-end; margin-bottom:28px;}
.topbar h1{ font-family:'Sora',sans-serif; font-size:24px; margin:0 0 4px; font-weight:700; }
.topbar p{ margin:0; color:var(--muted); font-size:13.5px; }
.today{ text-align:right; font-size:12px; color:var(--muted); }
.today strong{ display:block; font-family:'IBM Plex Mono',monospace; color:var(--ink); font-size:13px; }

.cards{ display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-bottom:30px; }
.card{ background:var(--card); border:1px solid var(--line); border-radius:14px; padding:18px 20px; }
.card .label{ font-size:12px; color:var(--muted); margin-bottom:10px; }
.card .value{ font-family:'IBM Plex Mono',monospace; font-size:23px; font-weight:500; }
.card .delta{ font-size:11.5px; margin-top:6px; color:var(--green); }
.card .delta.warn{ color:var(--amber); }
.card.accent{ border-color:var(--gold); background:linear-gradient(180deg,#fff, #FCF6E9); }

.panel{ background:var(--card); border:1px solid var(--line); border-radius:14px; overflow:hidden; margin-bottom:24px; }
.panel-head{ display:flex; justify-content:space-between; align-items:center; padding:18px 22px; border-bottom:1px solid var(--line); }
.panel-head h2{ font-family:'Sora',sans-serif; font-size:16px; margin:0; }

table{ width:100%; border-collapse:collapse; font-size:13.5px; }
th{ text-align:left; font-size:11.5px; text-transform:uppercase; letter-spacing:.06em;
    color:var(--muted); font-weight:600; padding:12px 22px; border-bottom:1px solid var(--line);}
td{ padding:14px 22px; border-bottom:1px solid var(--line); vertical-align:middle; }
tr:last-child td{ border-bottom:none; }
.aluno{ display:flex; align-items:center; gap:10px; }
.avatar{
  width:32px;height:32px;border-radius:50%;background:var(--navy-2);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;
  font-family:'Sora',sans-serif; flex-shrink:0;
}
.aluno .curso{ font-size:12px; color:var(--muted); }
.valor{ font-family:'IBM Plex Mono',monospace; }
.badge{ font-size:11.5px; font-weight:600; padding:4px 10px; border-radius:20px; display:inline-block; white-space:nowrap;}
.badge.pago, .badge.ativo, .badge.emdia{ background:var(--green-bg); color:var(--green); }
.badge.pendente, .badge.pendente_assinatura{ background:var(--amber-bg); color:var(--amber); }
.badge.atrasado, .badge.cancelado{ background:var(--red-bg); color:var(--red); }

.note{ margin-top:16px; font-size:12px; color:var(--muted); text-align:center; }

/* Forms */
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:16px 20px; padding:22px; }
.form-grid.single{ grid-template-columns:1fr; }
.form-grid label{ display:block; font-size:12.5px; color:var(--muted); margin-bottom:6px; font-weight:500;}
.form-grid input, .form-grid select{
  width:100%; padding:10px 12px; border:1px solid var(--line); border-radius:8px;
  font-family:'Inter',sans-serif; font-size:14px; background:#FBFAF7; color:var(--ink);
}
.form-grid input:focus, .form-grid select:focus{ outline:2px solid var(--gold); outline-offset:1px; background:#fff;}
.form-section-title{ grid-column:1/-1; font-family:'Sora',sans-serif; font-weight:700; font-size:14.5px; margin:8px 0 -4px; }
.checkbox-row{ grid-column:1/-1; display:flex; align-items:center; gap:8px; font-size:14px; }
.actions{ padding:18px 22px; border-top:1px solid var(--line); }
.btn{
  background:var(--navy); color:#fff; border:none; padding:11px 22px; border-radius:8px;
  font-family:'Inter',sans-serif; font-weight:600; font-size:14px; cursor:pointer;
}
.btn:hover{ background:var(--navy-2); }
.btn-gold{ background:var(--gold); color:var(--navy); }
.btn-sm{ padding:6px 14px; font-size:12.5px; }
.btn-outline{ background:transparent; color:var(--red); border:1px solid var(--red-bg); }

.flash{ padding:12px 18px; border-radius:8px; margin-bottom:18px; font-size:14px; }
.flash-success{ background:var(--green-bg); color:var(--green); }
.flash-error{ background:var(--red-bg); color:var(--red); }

.curso-list-item{ display:flex; justify-content:space-between; align-items:center; padding:14px 22px; border-bottom:1px solid var(--line); }
.curso-list-item:last-child{ border-bottom:none; }
.curso-list-item .meta{ font-size:12.5px; color:var(--muted); margin-top:2px; }

.bar{ width:70px; height:5px; border-radius:3px; background:#EDEAE0; overflow:hidden; }
.bar i{ display:block; height:100%; background:var(--gold); }

.detail-toggle{ cursor:pointer; color:var(--navy-2); font-size:12.5px; font-weight:600; }
.parcelas-sub{ background:#FBFAF7; }
.parcelas-sub td{ padding:10px 22px 10px 60px; font-size:12.5px; color:var(--muted); }

/* ---------- Menu mobile (hamburguer) ---------- */
.menu-toggle{
  display:none; position:fixed; top:14px; left:14px; z-index:60;
  width:42px; height:42px; border-radius:10px; border:none;
  background:var(--navy); color:#EAF1F0; font-size:20px; cursor:pointer;
  align-items:center; justify-content:center;
}
.sidebar-overlay{
  display:none; position:fixed; inset:0; background:rgba(18,42,58,.45);
  z-index:40; opacity:0; transition:opacity .2s ease;
}
.sidebar-overlay.show{ display:block; opacity:1; }

/* ---------- Responsivo: celular e tablets estreitos ---------- */
@media (max-width: 860px){
  .menu-toggle{ display:flex; }

  .sidebar{
    transform:translateX(-100%);
    transition:transform .25s ease;
    z-index:50; width:250px;
  }
  .sidebar.open{ transform:translateX(0); box-shadow:8px 0 24px rgba(0,0,0,.18); }

  main{
    margin-left:0; padding:70px 18px 30px;
    max-width:100%;
  }

  .topbar{ flex-direction:column; align-items:flex-start; gap:10px; }
  .today{ text-align:left; }

  .cards{ grid-template-columns:1fr 1fr; gap:12px; }

  .form-grid{ grid-template-columns:1fr; }

  table{ display:block; overflow-x:auto; white-space:nowrap; }
}

@media (max-width: 480px){
  .cards{ grid-template-columns:1fr; }
}