:root {
  --bg: #0b1020;
  --bg-2: #131a2e;
  --fg: #e6edf7;
  --muted: #8b95ad;
  --accent: #f7931a; /* bitcoin orange */
  --accent-2: #ffb547;
  --accent-3: #4fc3f7;
  --green: #00d97e;
  --red: #ff5577;
  --warn: #ffcc66;
  --border: #1f2a44;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 18px; }

/* ===== Header ===== */
header {
  background: linear-gradient(180deg, rgba(247,147,26,0.08), transparent);
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
}
.header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-icon {
  font-size: 40px;
  color: var(--accent);
  font-weight: 700;
}
.brand h1 { font-size: 26px; letter-spacing: -0.5px; }
.sub { color: var(--muted); font-size: 13px; }
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.currency-select {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px 4px 14px;
}
.cur-label {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 700;
}
.currency-select select {
  background: transparent;
  border: none;
  color: var(--fg);
  font-size: 13px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  padding: 6px 0;
}
.currency-select select:focus { outline: none; }
.currency-select select option { background: var(--bg-2); }
.live-badge {
  display: flex; align-items: center; gap: 8px;
  background: rgba(0,217,126,0.1);
  color: var(--green);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
}
.dot {
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

main.container { padding: 24px 18px; }

/* ===== Card ===== */
.card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  margin-bottom: 18px;
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.card-header h2 { font-size: 18px; }
.updated { color: var(--muted); font-size: 12px; }

.muted { color: var(--muted); font-size: 13px; }
.link-inline { color: var(--accent-3); text-decoration: none; }

/* ===== Hero ===== */
.hero { background: linear-gradient(135deg, rgba(247,147,26,0.12), rgba(247,147,26,0.04)); }
.hero-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}
.hero-label {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.hero-preco {
  font-size: 44px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -1.5px;
  margin: 4px 0;
}
.hero-variacao { color: var(--muted); font-size: 14px; }
.hero-outras { display: flex; flex-direction: column; gap: 8px; }
.cotacao {
  display: grid;
  grid-template-columns: 50px 1fr 80px;
  gap: 10px;
  align-items: center;
  padding: 6px 12px;
  background: rgba(255,255,255,0.03);
  border-radius: 8px;
  min-width: 200px;
}
.cot-label { color: var(--muted); font-size: 11px; font-weight: 700; }
.cot-val { font-weight: 700; font-size: 15px; }
.cot-var { font-size: 11px; text-align: right; }
.cot-var.up { color: var(--green); }
.cot-var.down { color: var(--red); }
.hero-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 11px;
}

/* ===== Stats Grid ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}
.stat-box {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat-label { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
.stat-value { font-size: 18px; font-weight: 700; color: var(--accent-2); }

/* ===== Fees ===== */
.fees-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin: 14px 0;
}
.fee-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: relative;
}
.priority-fastest { border-left: 3px solid var(--red); }
.priority-half { border-left: 3px solid var(--warn); }
.priority-hour { border-left: 3px solid var(--accent-3); }
.priority-economy { border-left: 3px solid var(--green); }
.fee-prio { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; font-weight: 700; }
.fee-rate { font-size: 28px; font-weight: 800; color: var(--accent); letter-spacing: -1px; }
.fee-unit { color: var(--muted); font-size: 11px; }
.fee-est { color: var(--fg); font-size: 12px; margin-top: 4px; padding-top: 4px; border-top: 1px dashed var(--border); }

.calc-tx {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-top: 16px;
}
.calc-tx-title { font-size: 14px; margin-bottom: 10px; color: var(--accent-2); }
.calc-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  align-items: end;
}
.calc-field { display: flex; flex-direction: column; gap: 4px; }
.calc-field label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.calc-field input, .calc-field select {
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
}
.calc-field .hint { color: var(--muted); font-size: 10px; margin-top: 2px; }
.calc-result {
  background: rgba(247,147,26,0.08);
  border: 1px solid rgba(247,147,26,0.3);
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.calc-result-label { font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; font-weight: 700; }
.calc-result-value { font-size: 22px; font-weight: 800; color: var(--accent); }
.calc-result-meta { font-size: 11px; color: var(--muted); }
.presets {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}
.presets-label { color: var(--muted); font-size: 11px; margin-right: 6px; }
.preset {
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 11px;
  cursor: pointer;
  font-family: inherit;
}
.preset:hover { border-color: var(--accent); }
.conversor { display: flex; flex-direction: column; gap: 14px; }
.conv-row {
  display: grid;
  grid-template-columns: 1fr 140px 40px 140px;
  gap: 10px;
  align-items: end;
}
.conv-field { display: flex; flex-direction: column; gap: 4px; }
.conv-field label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.conv-field input, .conv-field select {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 16px;
  font-family: inherit;
}
.conv-swap {
  background: var(--accent);
  border: none;
  color: var(--bg);
  font-size: 18px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-weight: 700;
}
.conv-swap:hover { background: var(--accent-2); }
.conv-result {
  background: linear-gradient(135deg, rgba(247,147,26,0.08), rgba(247,147,26,0.02));
  border: 1px solid rgba(247,147,26,0.3);
  border-radius: 10px;
  padding: 18px;
  text-align: center;
}
.conv-result-main {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent);
}
.conv-result-main #conv-result-cur { font-size: 18px; margin-left: 6px; color: var(--fg); }
.conv-result-meta { color: var(--muted); font-size: 13px; margin-top: 6px; }

/* ===== Tools Grid ===== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}
.tool {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--fg);
  transition: border-color 0.2s;
}
.tool:hover { border-color: var(--accent); }
.tool-icon { font-size: 26px; }
.tool strong { font-size: 14px; }
.tool span:not(.tool-icon) { color: var(--muted); font-size: 12px; }

/* ===== DCA ===== */
.dca-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin: 14px 0;
}
.dca-input { display: flex; flex-direction: column; gap: 4px; }
.dca-input label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.dca-input input, .dca-input select {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
}
.dca-result {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
}
.dca-stat { display: flex; flex-direction: column; gap: 4px; }
.dca-stat span { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
.dca-stat strong { font-size: 18px; color: var(--accent-2); }

/* ===== Educativo ===== */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}
.edu-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 16px 18px;
}
.edu-item h3 { font-size: 16px; margin-bottom: 10px; color: var(--accent-2); }
.edu-item p { color: var(--muted); font-size: 14px; margin-bottom: 10px; }
.edu-item p strong { color: var(--fg); }
.edu-list { list-style: none; padding: 0; margin: 10px 0; }
.edu-list li {
  color: var(--muted);
  font-size: 13px;
  padding: 4px 0 4px 18px;
  position: relative;
}
.edu-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}
.edu-warn {
  background: rgba(255,85,119,0.1);
  border: 1px solid rgba(255,85,119,0.3);
  color: #ffb3c1;
  padding: 10px;
  border-radius: 6px;
  font-size: 13px;
  margin-top: 10px;
}

/* ===== News ===== */
.news-list { display: flex; flex-direction: column; gap: 10px; }
.news-item {
  padding: 12px;
  background: var(--bg);
  border-radius: 8px;
  border-left: 3px solid var(--accent);
}
.news-item a {
  color: var(--fg);
  text-decoration: none;
  font-weight: 500;
  display: block;
  margin-bottom: 4px;
}
.news-item a:hover { color: var(--accent-2); }
.news-meta {
  display: flex;
  gap: 12px;
  font-size: 11px;
  color: var(--muted);
}

.badge {
  background: var(--accent);
  color: var(--bg);
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  margin-left: 6px;
  vertical-align: middle;
}

/* ===== Footer ===== */
.footer-note {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  margin-top: 24px;
}
.footer-note a { color: var(--accent-3); text-decoration: none; }
.footer-note code {
  background: var(--bg-2);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
}

@media (max-width: 700px) {
  .hero-content { grid-template-columns: 1fr; }
  .hero-outras { flex-direction: row; flex-wrap: wrap; }
  .cotacao { min-width: 0; flex: 1; grid-template-columns: 40px 1fr 60px; }
  .hero-preco { font-size: 32px; }
  .conv-row { grid-template-columns: 1fr; }
  .conv-swap { width: 100%; height: 36px; border-radius: 8px; }
  .brand h1 { font-size: 20px; }
  .brand-icon { font-size: 32px; }
}