:root {
  --bg-main: #060c14;
  --bg-card: #0c1824;
  --bg-input: #122234;
  --border: #1e3247;
  --accent: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.2);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg-main);
  color: var(--text-main);
  font-family: 'Plus Jakarta Sans', sans-serif;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.navbar {
  border-bottom: 1px solid var(--border);
  background: rgba(12, 24, 36, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
}
.logo-icon { font-size: 22px; }
.logo strong { color: var(--accent); }

.nav-links-suite { display: flex; gap: 8px; }
@media (max-width: 800px) { .nav-links-suite { display: none; } }

.nav-tool-link {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid transparent;
  transition: all 0.2s;
}
.nav-tool-link:hover, .nav-tool-link.active {
  color: #fff;
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.3);
}

.main-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px;
  flex: 1;
}

.hero-section {
  text-align: center;
  margin-bottom: 32px;
}
.hero-section h1 {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
}
.hero-section p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 6px;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}
@media (max-width: 850px) { .calc-grid { grid-template-columns: 1fr; } }

.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding-bottom: 12px;
}
.card-header h2 { font-size: 16px; font-weight: 700; color: #fff; }
.fee-badge {
  font-size: 11px;
  font-weight: 800;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 3px 8px;
  border-radius: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
@media (max-width: 500px) { .form-row { grid-template-columns: 1fr; } }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 12px; font-weight: 600; color: var(--text-muted); }

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.input-wrap input, .input-wrap select {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  outline: none;
}
.input-wrap input:focus { border-color: var(--accent); }
.currency-prefix { position: absolute; left: 12px; color: var(--text-muted); }
.input-wrap input[type="number"] { padding-left: 28px; }
.suffix { position: absolute; right: 12px; font-size: 11px; color: var(--text-muted); font-weight: 700; }

.profit-highlight {
  background: #09121a;
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 10px;
  padding: 18px;
  text-align: center;
  margin-bottom: 18px;
}
.profit-label { font-size: 11px; text-transform: uppercase; font-weight: 800; color: var(--text-muted); }
.profit-amount { font-size: 32px; font-weight: 900; margin: 4px 0 12px; }

.profit-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 12px;
}
.metric { display: flex; flex-direction: column; }
.m-label { font-size: 10px; color: var(--text-muted); }
.m-val { font-size: 13px; font-weight: 800; }

.summary-list { display: flex; flex-direction: column; gap: 10px; }
.summary-item {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  padding-bottom: 6px;
}
.summary-item strong { font-weight: 700; }

.action-btn, .share-calc-btn {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: #fff;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
}
.share-calc-btn { background: rgba(16, 185, 129, 0.15); border-color: rgba(16, 185, 129, 0.3); color: #34d399; }

.perks-rewards-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
}
.perks-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.perks-header h3 { font-size: 15px; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 8px; }
.perks-badge { font-size: 10px; font-weight: 800; background: rgba(16, 185, 129, 0.15); color: #34d399; padding: 2px 6px; border-radius: 4px; }
.perks-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 700px) { .perks-grid { grid-template-columns: 1fr; } }
.perk-card {
  background: #09121a;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.perk-top { display: flex; gap: 12px; margin-bottom: 12px; }
.perk-icon-box { font-size: 24px; }
.perk-title { font-size: 13px; font-weight: 800; color: #fff; }
.perk-desc { font-size: 11px; color: var(--text-muted); margin-top: 3px; }
.perk-action-row { display: flex; justify-content: space-between; align-items: center; }
.perk-code-tag { font-size: 10px; font-weight: 800; color: #34d399; }
.perk-btn {
  background: #059669;
  color: #fff;
  text-decoration: none;
  font-size: 11px;
  font-weight: 800;
  padding: 6px 12px;
  border-radius: 6px;
}
.perk-btn.green { background: #10b981; }

.footer {
  border-top: 1px solid var(--border);
  padding: 20px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #059669;
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 800;
  display: none;
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  z-index: 9999;
}
.toast.show { display: block; }