:root {
  --bg: #0b0c0f;
  --bg-panel: #131417;
  --bg-panel-2: #1a1b20;
  --border: #26282f;
  --text: #e8e8ea;
  --text-dim: #9a9ba3;
  --text-faint: #5f6169;
  --accent: #ff8a3d;
  --accent-dim: #ff8a3d33;
  --ok: #35c78a;
  --err: #ff5d5d;
  --radius: 12px;
  font-family: -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  border-radius: 8px;
  background: var(--bg-panel-2);
  color: var(--text);
  padding: 8px 14px;
  transition: background 0.15s;
}
button:hover { background: #24262d; }
button.primario { background: var(--accent); color: #1a0f04; font-weight: 600; }
button.primario:hover { background: #ff9c5c; }
button.perigo { background: transparent; color: var(--err); border: 1px solid #4a2323; }
button:disabled { opacity: 0.5; cursor: not-allowed; }

input, textarea {
  font: inherit;
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 9px 12px;
}
input:focus, textarea:focus { outline: 1px solid var(--accent); }

/* ---------- Login ---------- */
#tela-login {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cartao-login {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 340px;
  text-align: center;
}
.cartao-login h1 { margin: 0 0 4px; font-size: 22px; letter-spacing: -0.02em; }
.cartao-login .marca { color: var(--accent); }
.cartao-login p { color: var(--text-dim); font-size: 13px; margin: 0 0 24px; }
.cartao-login form { display: flex; flex-direction: column; gap: 10px; }
.cartao-login .erro { color: var(--err); font-size: 13px; min-height: 18px; }

/* ---------- App shell ---------- */
#app { display: none; height: 100vh; flex-direction: column; }
#app.ativo { display: flex; }

.topo {
  height: 56px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 18px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-panel);
  flex-shrink: 0;
}
.topo .marca { font-weight: 700; letter-spacing: -0.02em; color: var(--accent); font-size: 15px; }
.trilha { display: flex; align-items: center; gap: 6px; color: var(--text-dim); font-size: 13px; }
.trilha b { color: var(--text); font-weight: 600; }
.trilha .sep { color: var(--text-faint); }
.topo .espaco { flex: 1; }

.corpo { flex: 1; display: flex; min-height: 0; }

/* ---------- Chat (lateral) ---------- */
.painel-chat {
  width: 380px;
  min-width: 320px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
}
.chat-mensagens { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 92%; padding: 10px 13px; border-radius: 10px; font-size: 13.5px; line-height: 1.5; white-space: pre-wrap; }
.msg.usuario { align-self: flex-end; background: var(--accent-dim); border: 1px solid #ff8a3d55; }
.msg.agente { align-self: flex-start; background: var(--bg-panel-2); border: 1px solid var(--border); }
.msg-vazio { color: var(--text-faint); font-size: 13px; text-align: center; margin-top: 40px; }

.progresso {
  margin: 0 16px 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: #2a2110;
  border: 1px solid #4a3818;
  color: #ffcb8a;
  font-size: 12.5px;
  display: none;
}
.progresso.ativo { display: block; }
.progresso .pontos::after { content: ""; animation: pontos 1.4s infinite; }
@keyframes pontos { 0%{content:"";} 33%{content:".";} 66%{content:"..";} 100%{content:"...";} }

.chat-input { display: flex; gap: 8px; padding: 14px; border-top: 1px solid var(--border); }
.chat-input textarea { flex: 1; resize: none; height: 44px; }

/* ---------- Workspace (canvas) ---------- */
.workspace { flex: 1; display: flex; flex-direction: column; min-width: 0; background: var(--bg); }
.workspace-topo { display: flex; align-items: center; gap: 10px; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.workspace-topo h2 { font-size: 14px; margin: 0; font-weight: 600; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.04em; }

.abas-arquivo { display: flex; gap: 6px; padding: 10px 18px; flex-wrap: wrap; border-bottom: 1px solid var(--border); }
.chip-arquivo { background: var(--bg-panel-2); border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; font-size: 12px; color: var(--text-dim); }
.chip-arquivo.pronto { color: var(--ok); border-color: #1e4a35; }

.workspace-conteudo { flex: 1; overflow: auto; padding: 18px; }

.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 36px;
  text-align: center;
  color: var(--text-dim);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone:hover, .dropzone.arrastando { border-color: var(--accent); background: var(--accent-dim); }
.dropzone b { color: var(--text); }

.preview-frame-wrap { height: 100%; min-height: 480px; }
.preview-frame-wrap iframe { width: 100%; height: 100%; border: 0; border-radius: var(--radius); background: #000; }
.preview-aguardando { color: var(--text-faint); text-align: center; padding: 60px 20px; }

/* ---------- Sidebar de navegação (projeto/vídeo) ---------- */
.modal-fundo { position: fixed; inset: 0; background: #000a; display: none; align-items: center; justify-content: center; z-index: 10; }
.modal-fundo.ativo { display: flex; }
.modal { background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius); width: 460px; max-height: 70vh; overflow: auto; padding: 20px; }
.modal h3 { margin: 0 0 14px; }
.lista-projetos { display: flex; flex-direction: column; gap: 4px; margin-bottom: 16px; }
.item-projeto { padding: 10px 12px; border-radius: 8px; cursor: pointer; display: flex; justify-content: space-between; }
.item-projeto:hover { background: var(--bg-panel-2); }
.item-video { padding: 8px 12px 8px 26px; border-radius: 8px; cursor: pointer; font-size: 13px; color: var(--text-dim); }
.item-video:hover { background: var(--bg-panel-2); color: var(--text); }
.linha-nova { display: flex; gap: 8px; margin-top: 10px; }
.linha-nova input { flex: 1; }