:root {
    --fundo: #f4f5f7;
    --cartao: #ffffff;
    --texto: #1c2430;
    --suave: #667085;
    --borda: #e4e7ec;
    --destaque: #0e7c66;
    --destaque-escuro: #0a5f4e;
    --destaque-claro: #e3f4ef;
    --erro: #b42318;
    --erro-claro: #fef3f2;
    --raio: 14px;
    --sombra: 0 1px 2px rgba(16, 24, 40, .06), 0 4px 16px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--fundo);
    color: var(--texto);
    font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--destaque); }
h1, h2 { line-height: 1.2; margin: 0 0 .5rem; }
code { background: var(--fundo); padding: .1em .35em; border-radius: 6px; font-size: .9em; }
.suave { color: var(--suave); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* Topo */
.topo {
    display: flex; align-items: center; justify-content: space-between; gap: 1rem;
    padding: .9rem clamp(1rem, 4vw, 2.5rem);
    background: var(--cartao); border-bottom: 1px solid var(--borda);
}
.marca { display: flex; align-items: center; gap: .45rem; color: var(--texto); text-decoration: none; font-size: 1.1rem; }
.marca strong { color: var(--destaque); }
.marca-ponto {
    width: .65rem; height: .65rem; border-radius: 50%; background: #e5484d;
    box-shadow: 0 0 0 0 rgba(229, 72, 77, .5); animation: aovivo 1.6s infinite;
}
.topo-usuario { display: flex; align-items: center; gap: .75rem; margin: 0; font-size: .95rem; }

.conteudo { max-width: 1100px; margin: 0 auto; padding: clamp(1rem, 4vw, 2rem); }
.titulo-pagina { font-size: 1.6rem; margin-bottom: 1.25rem; }
.voltar { display: inline-block; margin-bottom: 1rem; text-decoration: none; }

.cartao { background: var(--cartao); border: 1px solid var(--borda); border-radius: var(--raio); box-shadow: var(--sombra); }

/* Botões e formulários */
.botao {
    display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
    border: 0; border-radius: 10px; padding: .75rem 1.1rem;
    background: var(--destaque); color: #fff; font: inherit; font-weight: 600; cursor: pointer;
    transition: background .15s, transform .05s;
}
.botao:hover:not(:disabled) { background: var(--destaque-escuro); }
.botao:active:not(:disabled) { transform: translateY(1px); }
.botao:disabled { opacity: .5; cursor: not-allowed; }
.botao-secundario { background: var(--texto); }
.botao-secundario:hover:not(:disabled) { background: #000; }
.botao-grande { width: 100%; padding: 1rem; font-size: 1.1rem; }
.botao-link { background: none; border: 0; color: var(--destaque); font: inherit; cursor: pointer; padding: 0; }

.formulario { display: grid; gap: 1rem; margin: 1.25rem 0; }
.formulario label { display: grid; gap: .35rem; font-weight: 600; font-size: .95rem; }
input {
    width: 100%; padding: .7rem .85rem; font: inherit;
    border: 1px solid var(--borda); border-radius: 10px; background: #fff; color: var(--texto);
}
input:focus { outline: 2px solid var(--destaque); outline-offset: 1px; border-color: transparent; }

.alerta { padding: .7rem .9rem; border-radius: 10px; margin: .75rem 0; font-size: .95rem; }
.alerta-erro { background: var(--erro-claro); color: var(--erro); }
.alerta-sucesso { background: var(--destaque-claro); color: var(--destaque-escuro); }

/* Login */
.login { max-width: 420px; margin: 2rem auto; padding: 2rem; }
.demo { border-top: 1px solid var(--borda); padding-top: 1rem; }
.demo summary { cursor: pointer; font-weight: 600; }
.demo ul { padding-left: 1.2rem; margin: .5rem 0; }

/* Lista */
.grade-lotes { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.25rem; }
.lote { overflow: hidden; color: inherit; text-decoration: none; transition: transform .15s, box-shadow .15s; }
.lote:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(16, 24, 40, .12); }
.lote img { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.lote-corpo { padding: 1rem 1.1rem 1.2rem; }
.lote-corpo h2 { font-size: 1.1rem; margin-top: .5rem; }
.lote-corpo p { margin: 0; font-size: .95rem; }
.lote-encerrado img { filter: grayscale(1); opacity: .7; }
.selo { display: inline-block; font-size: .75rem; font-weight: 700; padding: .15rem .55rem; border-radius: 999px; text-transform: uppercase; letter-spacing: .03em; }
.selo-aberto { background: var(--destaque-claro); color: var(--destaque-escuro); }
.selo-encerrado { background: var(--fundo); color: var(--suave); }

/* Sala */
.sala { display: grid; grid-template-columns: 1.2fr 1fr; gap: 1.25rem; align-items: start; }
.sala-lote { overflow: hidden; }
.sala-lote img { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.sala-lote-corpo { padding: 1.25rem 1.5rem 1.5rem; }
.sala-lote-corpo p { margin: 0 0 .75rem; }
.numeros { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; margin: 1rem 0 0; }
.numeros div { background: var(--fundo); border-radius: 10px; padding: .6rem .75rem; }
.numeros dt { font-size: .8rem; color: var(--suave); }
.numeros dd { margin: 0; font-weight: 700; font-variant-numeric: tabular-nums; }

.sala-lances { padding: 1.25rem 1.5rem 1.5rem; position: sticky; top: 1rem; }
.status-conexao { display: inline-flex; align-items: center; gap: .4rem; font-size: .85rem; font-weight: 600; color: var(--suave); }
.status-conexao::before { content: ""; width: .55rem; height: .55rem; border-radius: 50%; background: #f5a524; }
.status-conexao[data-estado="online"] { color: #c0262d; }
.status-conexao[data-estado="online"]::before { background: #e5484d; animation: aovivo 1.6s infinite; }
.status-conexao[data-estado="encerrado"]::before { background: var(--suave); }

.maior-lance { display: grid; margin: 1rem 0; padding: 1rem 1.1rem; border-radius: 12px; background: var(--destaque-claro); }
.maior-lance strong { font-size: 2.1rem; color: var(--destaque-escuro); font-variant-numeric: tabular-nums; }
.pulsar { animation: pulsar .7s ease-out; }

.formulario-lance { display: grid; gap: .6rem; }
.lance-livre { display: flex; gap: .5rem; }
.lance-livre input { flex: 1; min-width: 0; }

.presenca { font-size: .85rem; color: var(--suave); margin-top: .75rem; }
.historico-titulo { font-size: 1rem; margin-top: 1.25rem; }
.historico { list-style: none; margin: 0; padding: 0; max-height: 300px; overflow-y: auto; }
.historico li {
    display: grid; grid-template-columns: 1fr auto auto; gap: .75rem; align-items: baseline;
    padding: .55rem .25rem; border-bottom: 1px solid var(--borda); font-size: .95rem;
}
.historico li strong { font-variant-numeric: tabular-nums; }
.historico time { color: var(--suave); font-size: .8rem; }
.historico li.meu span { color: var(--destaque-escuro); font-weight: 600; }
.historico li.novo { animation: entrar .5s ease-out; }

@keyframes aovivo { 0% { box-shadow: 0 0 0 0 rgba(229, 72, 77, .5); } 70% { box-shadow: 0 0 0 7px rgba(229, 72, 77, 0); } 100% { box-shadow: 0 0 0 0 rgba(229, 72, 77, 0); } }
@keyframes pulsar { 0% { background: #b8eadb; } 100% { background: var(--destaque-claro); } }
@keyframes entrar { from { opacity: 0; transform: translateY(-6px); background: var(--destaque-claro); } to { opacity: 1; transform: none; } }

@media (max-width: 820px) {
    .sala { grid-template-columns: 1fr; }
    .sala-lances { position: static; }
    .numeros { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before { animation: none !important; transition: none !important; }
}