:root {
  --bg: #0f1115;
  --card: #171a21;
  --line: #2a2f3a;
  --ink: #e8eaed;
  --muted: #9aa3b2;
  --brand: #e03a3a;
  --brand-deep: #b62828;
  --ok: #2faa6a;
  --warn: #d8a33a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(1200px 600px at 50% -10%, #1b1f29, var(--bg));
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 560px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .35);
}

header { text-align: center; margin-bottom: 8px; }
.logo { width: 400px; max-width: 100%; height: auto; margin: 0 auto 16px; display: block; }
header h1 { margin: 0 0 4px; font-size: 22px; }
.sub { margin: 0 0 20px; color: var(--muted); }

fieldset { border: 0; padding: 0; margin: 0 0 20px; }
legend { font-weight: 600; padding: 0; margin-bottom: 10px; }

.rooms { display: flex; flex-wrap: wrap; gap: 10px; }
.rooms label {
  flex: 1 1 calc(50% - 5px);
  position: relative;
  cursor: pointer;
}
.rooms input { position: absolute; opacity: 0; }
.rooms span {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--muted);
  transition: .15s;
}
.rooms span img {
  height: 32px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}
.rooms input:checked + span {
  border-color: var(--brand);
  color: var(--ink);
  background: rgba(224, 58, 58, .12);
}

#nome {
  width: 100%;
  padding: 12px 14px;
  background: #0f1218;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  font-size: 15px;
}
#nome:focus { outline: 0; border-color: var(--brand); }
.preview { margin: 10px 0 0; color: var(--muted); }
.preview strong { color: var(--ink); }

.drop {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 90px;
  border: 1.5px dashed var(--line);
  border-radius: 12px;
  color: var(--muted);
  cursor: pointer;
  text-align: center;
  padding: 16px;
  transition: .15s;
}
.drop.over, .drop:hover { border-color: var(--brand); color: var(--ink); }

.lista { list-style: none; margin: 12px 0 0; padding: 0; }
.lista li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: 6px;
  font-size: 13px;
}
.lista li span.size { color: var(--muted); }

#btn {
  width: 100%;
  padding: 14px;
  border: 0;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: .15s;
}
#btn:hover:not(:disabled) { background: var(--brand-deep); }
#btn:disabled { opacity: .45; cursor: not-allowed; }
#btn.loading { color: transparent; position: relative; }
#btn.loading::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.msg {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 14px;
}
.msg.ok { background: rgba(47,170,106,.12); border: 1px solid var(--ok); color: #aef0cc; }
.msg.warn { background: rgba(216,163,58,.12); border: 1px solid var(--warn); color: #f3dca0; }
.msg.err { background: rgba(224,58,58,.12); border: 1px solid var(--brand); color: #f6c0c0; }

footer { margin-top: 22px; }
footer p { margin: 0; color: var(--muted); font-size: 12px; }