:root{
  --navy:#17324D; --green:#20B486; --green-dark:#178A66; --sand:#F7F5EF; --white:#fff;
  --gray:#667085; --gray-dark:#475467; --line:#E4E0D5; --danger:#B42318; --danger-bg:#FEF3F2; --ok-bg:#E8F7F1; --warn-bg:#FFF6E0;
  --radius:16px; --shadow:0 2px 10px rgba(23,50,77,.08);
  --font:'Manrope','Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}
*{box-sizing:border-box}
@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0;font-family:var(--font);background:var(--sand);color:var(--navy);line-height:1.5;font-size:16px}
img,svg{max-width:100%}
a{color:var(--navy)}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;color:var(--navy);overflow-wrap:break-word}
h1{font-size:clamp(1.9rem,6vw,3rem);font-weight:800}
h2{font-size:1.4rem}
h3{font-size:1.05rem}
p{margin:0 0 1em;overflow-wrap:break-word}
.muted{color:var(--gray)}
.small{font-size:.875rem}
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 16px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--navy);color:#fff;padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid #0B6BCB;outline-offset:2px}
/* Sobre o azul-marinho o anel escuro nao teria contraste suficiente */
.site-footer :focus-visible,.demo-banner :focus-visible{outline-color:#9ECBFF}
/* O cabecalho fixo cobriria o alvo de um link de ancora */
[id]{scroll-margin-top:110px}
.icon{width:1.25em;height:1.25em;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;vertical-align:-.2em}

/* Botões */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 18px;border-radius:12px;border:2px solid transparent;font:inherit;font-weight:700;cursor:pointer;text-decoration:none;background:var(--green);color:#052E22;transition:background .15s}
.btn:hover{background:#1DA87C}
.btn-outline{background:transparent;border-color:var(--navy);color:var(--navy)}
.btn-outline:hover{background:var(--navy);color:#fff}
.btn-ghost{background:transparent;color:var(--navy)}
.btn-ghost:hover{background:rgba(23,50,77,.08)}
.btn-danger{background:transparent;border-color:var(--danger);color:var(--danger)}
.btn-danger:hover{background:var(--danger-bg)}
.btn-block{width:100%}
.btn-sm{min-height:36px;padding:6px 12px;font-size:.875rem}
.btn[disabled]{opacity:.55;cursor:not-allowed}

/* Cabeçalho */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-row{display:flex;align-items:center;gap:12px;padding:10px 0;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.4rem;text-decoration:none;color:var(--navy)}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--green);display:grid;place-items:center;color:#fff}
.header-search{order:3;flex:1 1 100%;display:flex;gap:6px;background:var(--sand);border:1px solid var(--line);border-radius:14px;padding:4px}
.header-search input,.header-search select{border:0;background:transparent;font:inherit;color:var(--navy);padding:8px;min-width:0}
.header-search input{flex:1 1 40%}
.header-search select{flex:0 1 38%}
.header-search button{border:0;background:var(--navy);color:#fff;border-radius:10px;width:44px;cursor:pointer;display:grid;place-items:center}
.nav{margin-left:auto;display:flex;gap:6px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.nav .hide-sm{display:none}
@media(max-width:480px){.hide-xs{display:none}}
@media(max-width:420px){.hide-xxs{display:none}}
@media(min-width:900px){
  .header-search{order:0;flex:1 1 auto;max-width:520px}
  .nav .hide-sm{display:inline-flex}
}

/* Seções */
main{min-height:60vh}
.section{padding:32px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.section-head h2{margin-bottom:0}
.hero{background:linear-gradient(180deg,#fff 0%,var(--sand) 100%);padding:40px 0 32px}
.hero p.lead{font-size:1.1rem;color:var(--gray);max-width:560px}
.hero-search{display:grid;gap:10px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:var(--radius);padding:14px;margin-top:20px;max-width:760px}
@media(min-width:700px){.hero-search{grid-template-columns:1.4fr 1fr auto;align-items:end}}

/* Formulários */
.field{display:grid;gap:6px;margin-bottom:16px}
.field label,.label{font-weight:700;font-size:.9rem}
.req{color:var(--danger)}
input,select,textarea{font:inherit;color:var(--navy);background:#fff;border:1.5px solid #C9C5B8;border-radius:12px;padding:11px 12px;min-height:44px;width:100%}
textarea{min-height:120px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--navy)}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--danger)}
.error-msg{color:var(--danger);font-size:.85rem;display:none}
.field.invalid .error-msg{display:block}
.hint{font-size:.85rem;color:var(--gray)}
::placeholder{color:#5A6678;opacity:1}

/* Cartões e grade */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.grid{display:grid;gap:16px}
.grid-ads{grid-template-columns:repeat(2,1fr)}
@media(min-width:700px){.grid-ads{grid-template-columns:repeat(3,1fr)}}
@media(min-width:1000px){.grid-ads{grid-template-columns:repeat(4,1fr)}}
.grid-cats{grid-template-columns:repeat(2,1fr)}
@media(min-width:600px){.grid-cats{grid-template-columns:repeat(4,1fr)}}
.cat{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;padding:18px 10px;font-weight:700;text-decoration:none;border-radius:var(--radius);background:#fff;border:1px solid var(--line);transition:transform .15s,border-color .15s}
.cat:hover{transform:translateY(-2px);border-color:var(--green)}
.cat .icon{width:30px;height:30px;color:var(--green-dark)}

.ad{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;text-decoration:none;box-shadow:var(--shadow);position:relative}
.ad:hover{border-color:var(--green)}
.ad-body{padding:12px;display:grid;gap:4px}
.ad-title{font-weight:700;font-size:.98rem;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow-wrap:anywhere}
.ad-price{font-weight:800;font-size:1rem;overflow-wrap:anywhere}
@media(min-width:700px){.ad-price{font-size:1.1rem}}
.ad-meta{font-size:.82rem;color:var(--gray)}
.thumb{aspect-ratio:4/3;display:grid;place-items:center;position:relative;color:rgba(255,255,255,.9)}
.thumb .icon{width:44px;height:44px}
.tag{position:absolute;top:8px;left:8px;background:rgba(255,255,255,.95);color:var(--navy);font-size:.75rem;font-weight:800;padding:3px 8px;border-radius:99px}
/* Patrocinado desce: no cartao de 2 colunas colidia com o selo Exemplo */
.tag.sponsor{left:auto;right:8px;top:auto;bottom:8px;background:#FFF1C2}
.badge{display:inline-block;font-size:.75rem;font-weight:800;padding:3px 9px;border-radius:99px;background:var(--ok-bg);color:#0B5B42}
.badge.warn{background:var(--warn-bg);color:#7A5200}
.badge.gray{background:#EEF0F3;color:var(--gray-dark)}
.badge.red{background:var(--danger-bg);color:var(--danger)}

/* Avisos */
.alert{border-radius:12px;padding:12px 14px;display:flex;gap:10px;align-items:flex-start;font-size:.92rem}
.alert-info{background:#EAF2FB;color:#12395F}
.alert-warn{background:var(--warn-bg);color:#5C3F00}
.alert-ok{background:var(--ok-bg);color:#0B5B42}
.alert-err{background:var(--danger-bg);color:var(--danger)}
.demo-banner{background:var(--navy);color:#fff;text-align:center;font-size:.82rem;padding:6px 12px}
.state{text-align:center;padding:40px 16px;color:var(--gray)}
.state .icon{width:44px;height:44px;margin-bottom:8px;color:#9AA3AF}
.spinner{width:34px;height:34px;border:4px solid var(--line);border-top-color:var(--green);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 10px}
@keyframes spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition:none!important}}
.skeleton{background:linear-gradient(90deg,#eceae2 25%,#f5f3ec 50%,#eceae2 75%);background-size:200% 100%;animation:sk 1.2s infinite;border-radius:var(--radius);min-height:220px}
@keyframes sk{to{background-position:-200% 0}}

/* Resultados */
.layout-results{display:grid;gap:20px}
@media(min-width:900px){.layout-results{grid-template-columns:280px 1fr}}
.filters{display:grid;gap:16px;align-content:start}
.filters .field{margin-bottom:0}
.filters-toggle{display:inline-flex}
@media(min-width:900px){.filters-toggle{display:none}}
@media(max-width:899px){.filters.closed{display:none}}
.toolbar{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.toolbar select{width:auto}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}

/* Anúncio */
.layout-ad{display:grid;gap:20px}
@media(min-width:900px){.layout-ad{grid-template-columns:1.5fr 1fr}}
.gallery-main{border-radius:var(--radius);overflow:hidden}
.gallery-main .thumb{aspect-ratio:16/10}
.gallery-thumbs{display:flex;gap:8px;margin-top:8px}
.gallery-thumbs button{flex:1;border:2px solid transparent;border-radius:12px;padding:0;overflow:hidden;cursor:pointer;background:none}
.gallery-thumbs button[aria-pressed="true"]{border-color:var(--green)}
.gallery-thumbs .thumb{aspect-ratio:4/3;min-height:48px}
.gallery-thumbs .thumb .icon{width:24px;height:24px}
.price-big{font-size:clamp(1.5rem,7vw,2rem);font-weight:800}
.stack{display:grid;gap:12px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.avatar{width:48px;height:48px;border-radius:50%;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800;flex:none}

/* Tabs */
.tabs{display:flex;gap:6px;overflow-x:auto;border-bottom:1px solid var(--line);margin-bottom:18px}
.tabs button{border:0;background:none;font:inherit;font-weight:700;padding:11px 14px;min-height:44px;cursor:pointer;color:var(--gray);border-bottom:3px solid transparent;white-space:nowrap}
.tabs button[aria-selected="true"]{color:var(--navy);border-color:var(--green)}
.auth-box{max-width:440px;margin:32px auto}
.list-item{display:flex;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line);flex-wrap:wrap}
.list-item:last-child{border:0}
.list-item .thumb{width:84px;aspect-ratio:4/3;border-radius:10px;flex:none}
.list-item .thumb .icon{width:26px;height:26px}
.list-item .grow{flex:1;min-width:120px}

/* Upload */
.dropzone{border:2px dashed #B7B2A3;border-radius:var(--radius);padding:22px;text-align:center;background:#fff;color:var(--gray)}
/* O <input type=file> é visualmente oculto: mostra o foco no rótulo que faz o papel de botão */
.dropzone:focus-within{border-color:var(--navy)}
.dropzone:focus-within .btn{outline:3px solid #0B6BCB;outline-offset:2px}
.previews{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.previews div{position:relative;width:84px;height:84px;border-radius:10px;overflow:hidden}
.previews img{width:100%;height:100%;object-fit:cover}
.previews button{position:absolute;top:2px;right:2px;border:0;border-radius:50%;width:28px;height:28px;cursor:pointer;background:#fff;font-weight:800;line-height:1;color:var(--danger)}

/* Chat */
/* svh evita que a barra do navegador no celular corte o campo de mensagem */
.chat{display:grid;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-height:420px;height:calc(100vh - 250px);height:calc(100svh - 250px);max-height:760px}
@media(min-width:800px){.chat{grid-template-columns:320px 1fr}}
.conv-list{border-right:1px solid var(--line);overflow-y:auto}
.conv{display:flex;gap:10px;width:100%;text-align:left;padding:12px;border:0;border-bottom:1px solid var(--line);background:#fff;font:inherit;cursor:pointer;color:var(--navy)}
.conv:hover{background:var(--sand)}
.conv:focus-visible{outline-offset:-3px}
.conv[aria-current="true"]{background:var(--ok-bg)}
.conv .grow{min-width:0}
/* So o texto trunca: o seletor antigo pegava o .avatar e descentralizava a inicial */
.conv .grow>*{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.conv[aria-current="true"] .muted{color:var(--gray-dark)}
.chat-pane{display:grid;grid-template-rows:auto 1fr auto;min-height:0}
.chat-head{padding:12px 16px;border-bottom:1px solid var(--line);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
@media(max-width:560px){.chat-head{padding:10px 12px;gap:8px}}
.chat-head .grow{flex:1;min-width:140px}
.msgs{overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:8px;background:var(--sand)}
.msg{max-width:78%;padding:9px 13px;border-radius:14px;background:#fff;border:1px solid var(--line);align-self:flex-start;overflow-wrap:anywhere}
.msg.me{align-self:flex-end;background:var(--green);border-color:var(--green);color:#052E22}
.msg small{display:block;font-size:.75rem;opacity:1;margin-top:2px;text-align:right}
.msg.sending{opacity:.7}
.msg.fail{background:var(--danger-bg);border-color:var(--danger);color:var(--danger)}
.chat-pane>.chat-empty{grid-row:1/-1;display:grid;place-content:center;text-align:center;padding:32px 20px;color:var(--gray)}
.chat-pane>.chat-empty .icon{width:44px;height:44px;margin:0 auto 8px;color:#9AA3AF}
.chat-form{display:flex;gap:8px;padding:10px;border-top:1px solid var(--line)}
.chat-form input{flex:1}
@media(max-width:799px){
  .chat.show-list .chat-pane{display:none}
  .chat:not(.show-list) .conv-list{display:none}
  .chat{min-height:380px;height:calc(100vh - 240px);height:calc(100svh - 240px)}
}
@media(min-width:800px){.back-list{display:none}}

/* Admin */
table{width:100%;border-collapse:collapse;font-size:.92rem}
th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--gray)}
.table-wrap{overflow-x:auto}
.table-wrap table{min-width:520px}

/* Rodapé */
.site-footer{background:var(--navy);color:#DCE4EC;margin-top:40px;padding:36px 0 24px}
.site-footer a{color:#fff}
.site-footer h3{color:#fff}
.footer-grid{display:grid;gap:20px}
@media(min-width:700px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}

/* Modal */
/* flex + margin:auto centraliza quando cabe e deixa rolar quando nao cabe */
.modal-bg{position:fixed;inset:0;background:rgba(10,20,30,.55);display:flex;align-items:flex-start;justify-content:center;z-index:200;padding:16px;overflow:auto}
.modal{background:#fff;border-radius:var(--radius);padding:22px;max-width:460px;width:100%;margin:auto}
.toast-wrap{position:fixed;bottom:16px;left:0;right:0;display:grid;justify-items:center;gap:8px;z-index:300;pointer-events:none;padding:0 16px}
.toast{background:var(--navy);color:#fff;padding:10px 16px;border-radius:12px;box-shadow:var(--shadow);font-weight:600}
.toast.err{background:var(--danger)}