:root {
  --bg: #0f1115;
  --panel: #161a21;
  --panel-alt: #1c212a;
  --border: #2a303b;
  --gold: #c9a24a;
  --gold-soft: #e4c976;
  --text: #eef0f3;
  --text-muted: #8b93a1;
  --danger: #e0655a;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Helvetica, Arial, sans-serif;
}

a {
  color: var(--gold-soft);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Login */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 340px;
}

.brand {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
  text-align: center;
}

.brand span {
  color: var(--gold);
}

.subtitle {
  text-align: center;
  color: var(--text-muted);
  margin: 4px 0 24px;
  font-size: 13px;
}

.login-form label {
  display: block;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--text-muted);
}

.login-form input,
textarea,
select {
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
}

button {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  background: var(--gold);
  color: #17140a;
}

button:hover {
  background: var(--gold-soft);
}

button:disabled {
  background: var(--border);
  color: var(--text-muted);
  cursor: not-allowed;
}

.erro {
  color: var(--danger);
  font-size: 13px;
  margin-bottom: 12px;
}

/* Top bar */
.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.brand-mini {
  font-weight: 600;
}

.brand-mini span {
  color: var(--gold);
}

.topbar nav {
  display: flex;
  gap: 16px;
  flex: 1;
}

.topbar nav a {
  color: var(--text-muted);
  font-size: 14px;
  padding: 6px 10px;
  border-radius: 6px;
}

.topbar nav a.active {
  color: var(--text);
  background: var(--panel-alt);
}

.user-info {
  font-size: 13px;
  color: var(--text-muted);
}

/* Workspace */
.workspace {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 1px;
  height: calc(100vh - 61px);
  background: var(--border);
}

.panel {
  background: var(--bg);
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.chat-panel h2,
.preview-toolbar h2 {
  font-size: 15px;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 16px;
}

#setup-form label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 10px;
}

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.muted {
  color: var(--text-muted);
  font-size: 12px;
}

.chat-log {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 12px;
}

.bubble {
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.4;
  max-width: 90%;
  white-space: pre-wrap;
  word-break: break-word;
}

.bubble.user {
  background: var(--panel-alt);
  align-self: flex-end;
}

.bubble.assistant {
  background: var(--panel);
  border: 1px solid var(--border);
  align-self: flex-start;
}

.chat-form {
  display: flex;
  gap: 8px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

.chat-form textarea {
  flex: 1;
  resize: none;
}

/* Preview */
.preview-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.preview-toolbar h2 {
  flex: 1;
  margin: 0;
}

.btn-secundario {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--gold);
  color: var(--gold-soft);
  font-size: 14px;
  font-weight: 600;
}

#preview-frame-wrap {
  flex: 1;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
}

#preview-frame {
  width: 100%;
  height: 100%;
  border: none;
}

/* Histórico */
.historico-wrap {
  padding: 32px 40px;
  max-width: 1000px;
  margin: 0 auto;
}

.tabela-historico {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

.tabela-historico th,
.tabela-historico td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.tabela-historico th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}