/* Tema avançado */
:root {
  --bg: #0b0e11;
  --bg-2: #0e1217;
  --card: #12161c;
  --border: #232833;
  --text: #e6e6e6;
  --muted: #9aa4b4;
  --primary: #2d8cff;
  --primary-2: #1f6ed1;
  --accent: #61dafb;
  --success: #2ea572;
  --error: #a03a3a;
  --gradient: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body { font-family: Inter, Segoe UI, Arial, Helvetica, sans-serif; margin: 0; background: var(--bg); color: var(--text); }
a { color: var(--accent); text-decoration: none; }

/* Header + Banner */
header { background: #0c1117; border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 28px; height: 28px; }
.brand h1 { margin: 0; font-size: 18px; font-weight: 600; }
nav a { margin-right: 12px; }

.hero { background: var(--gradient); padding: 40px 16px; border-bottom: 1px solid var(--border); position: relative; overflow: hidden; }
.hero .content { max-width: 920px; margin: 0 auto; display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 24px; align-items: center; }
.hero h2 { margin: 0 0 8px; font-size: 28px; }
.hero p { margin: 0; color: #d6e4f0; }
.hero .card { background: rgba(18,22,28,0.75); backdrop-filter: blur(6px); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.hero .actions { margin-top: 12px; display: flex; gap: 10px; }
.btn { display: inline-block; padding: 10px 14px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-2); color: var(--text); cursor: pointer; }
.btn.primary { background: var(--primary); border: none; }
.btn.primary:hover { background: var(--primary-2); }

/* Conteúdo */
main { padding: 16px; }
section { margin-bottom: 20px; }

/* Formulários */
form { max-width: 520px; background: var(--card); padding: 16px; border: 1px solid var(--border); border-radius: 12px; }
label { display: block; margin-bottom: 12px; }
input, button { width: 100%; padding: 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-2); color: var(--text); }
button { background: var(--primary); border: none; cursor: pointer; }
button:hover { background: var(--primary-2); }

.alert { padding: 10px; border-radius: 8px; margin-bottom: 10px; }
.alert.error { background: #401515; border: 1px solid var(--error); }
.alert.success { background: #163f2d; border: 1px solid var(--success); }

/* Miner */
.miner { background: var(--card); padding: 16px; border: 1px solid var(--border); border-radius: 12px; max-width: 640px; }
.miner .stat { display: grid; grid-template-columns: 1fr 1fr; }
#status { margin-top: 8px; font-style: italic; color: var(--muted); }
.progress { height: 10px; background: #0e1217; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.progress-bar { height: 100%; width: 0%; background: linear-gradient(90deg, #2d8cff, #61dafb); transition: width 0.4s ease; }
.mining { position: relative; padding-left: 28px; }
.mining::before { content: ""; position: absolute; left: 0; top: 50%; width: 18px; height: 18px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; transform: translateY(-50%); animation: spin 0.9s linear infinite; }
@keyframes spin { from { transform: translateY(-50%) rotate(0deg); } to { transform: translateY(-50%) rotate(360deg); } }

/* Tabela */
table { width: 100%; border-collapse: collapse; background: var(--bg-2); }
th, td { padding: 10px; border-bottom: 1px solid var(--border); }
th { background: #11151a; text-align: left; }

/* Footer */
footer { padding: 16px; text-align: center; color: var(--muted); border-top: 1px solid var(--border); background: #0c1117; }

/* Responsivo */
@media (max-width: 780px) {
  .hero .content { grid-template-columns: 1fr; }
  form { max-width: 100%; }
}