* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #0d1117;
  color: #e6edf3;
  min-height: 100vh;
  padding: 20px;
  transition: background 0.3s, color 0.3s;
}

body.light {
  background: #f5f5f5;
  color: #222;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

header {
  text-align: center;
  margin-bottom: 24px;
  position: relative;
}

header h1 {
  font-size: 28px;
  margin-bottom: 6px;
  color: #f7931a;
}

.badge {
  background: #f7931a;
  color: #000;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: bold;
}

#netinfo {
  font-size: 13px;
  color: #888;
}

/* Botão de tema */
#btn-theme {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 20px;
  height: 20px;
  border-radius: 50%; padding: 0; line-height: 1;
  border: none;
  background: #f7931a;
  color: #000;
  font-size: 9px;
  cursor: pointer;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

/* Seletor de idioma — ao lado do cachorro */
.lang-switcher {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  gap: 4px;
  z-index: 1000;
}
.lang-btn {
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid #444;
  background: #222;
  color: #fff;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
}
.lang-btn.active {
  background: #f7931a;
  border-color: #f7931a;
  color: #000;
}
.lang-btn:hover {
  opacity: 0.8;
}

@media (max-width: 600px) {
  .lang-switcher {
    top: 10px;
    left: 10px;
  }
  .lang-btn {
    padding: 3px 6px;
    font-size: 10px;
  }
}

/* Cards */
.card {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
}

body.light .card {
  background: #fff;
  border-color: #ddd;
}

.card h2 {
  font-size: 20px;
  margin-bottom: 12px;
  color: #f7931a;
}

.card p {
  margin-bottom: 12px;
  line-height: 1.5;
  color: #c9d1d9;
}

body.light .card p {
  color: #444;
}

.hidden {
  display: none !important;
}

/* Labels e inputs */
label {
  display: block;
  margin: 12px 0 4px;
  font-size: 13px;
  color: #8b949e;
}

body.light label {
  color: #555;
}

input, textarea {
  width: 100%;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #30363d;
  background: #0d1117;
  color: #e6edf3;
  font-size: 14px;
  font-family: monospace;
}

body.light input, body.light textarea {
  background: #f6f8fa;
  color: #222;
  border-color: #ddd;
}

input:focus, textarea:focus {
  outline: none;
  border-color: #f7931a;
}

/* Botões */
button {
  padding: 10px 18px;
  border-radius: 6px;
  border: none;
  background: #f7931a;
  color: #000;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  margin: 6px 4px 6px 0;
  transition: opacity 0.2s;
}

button:hover {
  opacity: 0.85;
}

button.ghost {
  background: transparent;
  color: #f7931a;
  border: 1px solid #f7931a;
}

button.danger {
  background: #da3633;
  color: #fff;
}

/* Dashboard */
.balance-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.label {
  font-size: 13px;
  color: #8b949e;
  margin-bottom: 4px;
}

body.light .label {
  color: #555;
}

.balance {
  font-size: 28px;
  font-weight: bold;
  color: #f7931a;
  word-break: break-all;
}

.pending {
  font-size: 13px;
  color: #d29922;
  margin-top: 4px;
}

.addr-row {
  margin-bottom: 16px;
}

.addr {
  font-family: monospace;
  font-size: 13px;
  background: #0d1117;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #30363d;
  word-break: break-all;
  margin-bottom: 4px;
}

body.light .addr {
  background: #f6f8fa;
  color: #222;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.btn-row button {
  flex: 1;
  min-width: 100px;
  margin: 0;
}

.mnemonic {
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 6px;
  padding: 12px;
  font-family: monospace;
  font-size: 13px;
  line-height: 1.8;
  word-spacing: 8px;
  margin: 12px 0;
}

body.light .mnemonic {
  background: #f6f8fa;
  color: #222;
}

.warn {
  color: #da3633;
  font-weight: bold;
  margin: 12px 0;
}

.status {
  margin-top: 12px;
  font-size: 13px;
  color: #8b949e;
}

.qr {
  background: #fff;
  padding: 16px;
  border-radius: 8px;
  margin: 12px 0;
  display: inline-block;
}

.qr img, .qr canvas {
  display: block;
}

#history-list {
  margin-top: 12px;
}

.tx {
  padding: 12px;
  border-bottom: 1px solid #30363d;
  font-size: 13px;
}

.tx:last-child {
  border-bottom: none;
}

.tx-in {
  color: #3fb950;
}

.tx-out {
  color: #da3633;
}

/* Efeito de piscar quando atualiza */
.flash {
  animation: flashAnim 0.6s ease-out;
}
@keyframes flashAnim {
  0% { background-color: #f7931a; color: #000; }
  100% { background-color: transparent; }
}