:root {
  --bg: #0f1216;
  --bg-2: #161b22;
  --painel: #1b2230;
  --borda: #2a3444;
  --texto: #e6edf3;
  --texto-2: #9aa7b8;
  --primaria: #4f7cff;
  --primaria-2: #3a63e0;
  --ok: #3fb950;
  --erro: #f85149;
  --sombra: 0 10px 40px rgba(0, 0, 0, .45);
  --raio: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  color: var(--texto);
  background: radial-gradient(1200px 600px at 50% -10%, #1c2740 0%, var(--bg) 60%);
  min-height: 100vh;
}

h1, h2 { font-weight: 650; letter-spacing: -.01em; }
span.cubo, .cubo { color: var(--primaria); }
strong span, h1 span { color: var(--primaria); }

/* ---------------------------------------------------------------- Login */
.tela-login {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.cartao-login {
  width: 100%;
  max-width: 380px;
  background: var(--painel);
  border: 1px solid var(--borda);
  border-radius: var(--raio);
  box-shadow: var(--sombra);
  padding: 36px 32px 32px;
}

.marca { text-align: center; margin-bottom: 26px; }
.marca .cubo { font-size: 44px; line-height: 1; }
.marca h1 { margin: 12px 0 2px; font-size: 26px; }
.subtitulo { color: var(--texto-2); margin: 0; font-size: 14px; }

.formulario { display: flex; flex-direction: column; gap: 16px; }
.formulario label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--texto-2); }
input[type=text], input[type=password], input[type=number] {
  background: var(--bg-2);
  border: 1px solid var(--borda);
  border-radius: 9px;
  padding: 11px 13px;
  color: var(--texto);
  font-size: 15px;
  outline: none;
  transition: border-color .15s;
}
input:focus { border-color: var(--primaria); }

.botao {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 9px;
  padding: 11px 18px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, opacity .15s, transform .05s;
}
.botao:active { transform: translateY(1px); }
.botao.primario { background: var(--primaria); color: #fff; }
.botao.primario:hover { background: var(--primaria-2); }
.botao.primario:disabled { opacity: .45; cursor: not-allowed; }
.botao.grande { padding: 14px 26px; font-size: 16px; }
.botao.subtil { background: transparent; border-color: var(--borda); color: var(--texto-2); }
.botao.subtil:hover { color: var(--texto); border-color: var(--texto-2); }

.alerta { padding: 11px 13px; border-radius: 9px; font-size: 14px; margin-bottom: 18px; }
.alerta.erro { background: rgba(248, 81, 73, .12); border: 1px solid rgba(248, 81, 73, .4); color: #ffb4b0; }

/* ---------------------------------------------------------------- App */
.barra {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  border-bottom: 1px solid var(--borda);
  background: rgba(15, 18, 22, .7);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.barra-marca { display: flex; align-items: center; gap: 10px; font-size: 17px; }
.cubo.pequeno { font-size: 20px; }
.barra-dir { display: flex; align-items: center; gap: 14px; }
.utilizador { color: var(--texto-2); font-size: 14px; }

.conteudo { max-width: 720px; margin: 0 auto; padding: 34px 22px 60px; }

.painel {
  background: var(--painel);
  border: 1px solid var(--borda);
  border-radius: var(--raio);
  box-shadow: var(--sombra);
  padding: 28px;
  margin-bottom: 20px;
}
.painel h2 { margin: 0 0 6px; font-size: 21px; }
.ajuda { color: var(--texto-2); font-size: 14px; line-height: 1.55; margin: 0 0 18px; }

/* Zona de largar */
.zona-largar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  border: 2px dashed var(--borda);
  border-radius: var(--raio);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.zona-largar:hover, .zona-largar.ativa { border-color: var(--primaria); background: rgba(79, 124, 255, .06); }
.zona-icone { font-size: 34px; color: var(--primaria); }
.zona-texto strong { display: block; font-size: 15px; }
.zona-texto small { color: var(--texto-2); font-size: 12px; }
.ficheiro-nome {
  margin-top: 6px;
  padding: 8px 14px;
  background: var(--bg-2);
  border: 1px solid var(--borda);
  border-radius: 8px;
  font-size: 14px;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.avancado { margin: 18px 0; }
.avancado summary { cursor: pointer; color: var(--texto-2); font-size: 14px; padding: 6px 0; }
.avancado summary:hover { color: var(--texto); }
.grelha-opcoes { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 12px; }
.grelha-opcoes label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--texto-2); }
.grelha-opcoes label.largo { grid-column: 1 / -1; }
.grelha-opcoes small { font-size: 11px; color: var(--texto-2); opacity: .8; }

#botao-converter { width: 100%; margin-top: 8px; }

/* Progresso */
.progresso-cabecalho { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.fiandeira {
  width: 22px; height: 22px;
  border: 3px solid var(--borda);
  border-top-color: var(--primaria);
  border-radius: 50%;
  animation: girar .8s linear infinite;
  flex: none;
}
@keyframes girar { to { transform: rotate(360deg); } }
/* Barra de progresso */
.barra-progresso-linha {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}
.progresso-fase { color: var(--texto-2); font-size: 14px; }
.progresso-pct { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--texto); }
.barra-progresso {
  height: 12px;
  background: #0b0e13;
  border: 1px solid var(--borda);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 18px;
}
.barra-preenchida {
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primaria-2), var(--primaria));
  transition: width .4s ease;
}
.barra-preenchida.indeterminada {
  width: 35% !important;
  animation: desliza 1.2s ease-in-out infinite;
}
@keyframes desliza {
  0% { margin-left: -35%; }
  100% { margin-left: 100%; }
}

.log-detalhes { margin: 0; }
.log-detalhes summary { margin-bottom: 10px; }
.log {
  background: #0b0e13;
  border: 1px solid var(--borda);
  border-radius: 10px;
  padding: 16px;
  font-family: "Cascadia Code", "Consolas", ui-monospace, monospace;
  font-size: 12.5px;
  line-height: 1.6;
  color: #c9d3e0;
  max-height: 340px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

/* Resultado */
.resultado { text-align: center; padding: 12px 0 20px; }
.selo {
  width: 64px; height: 64px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 34px; font-weight: 700;
  margin: 0 auto 14px;
}
.selo.ok { background: rgba(63, 185, 80, .15); color: var(--ok); }
.selo.falha { background: rgba(248, 81, 73, .15); color: var(--erro); }
.resultado .botao { margin-top: 8px; }
#painel-resultado { text-align: center; }
#botao-novo { margin-top: 4px; }

@media (max-width: 560px) {
  .grelha-opcoes { grid-template-columns: 1fr; }
  .painel { padding: 20px; }
}