:root {
  --bg: #f6f8fc;
  --bg-muted: #eef2f9;
  --card: #0f1a39;
  --card-2: #111e44;
  --text-on-card: #e8eefc;
  --muted-on-card: #b7c3e0;
  --card-border: #1d2a52;
  --text: #0f172a;
  --text-muted: #475569;
  --border: #e6ebf5;
  --brand: #1a2e7a;
  --brand-600: #142462;
  --brand-soft: #e3e8ff;
  --success: #0ea5e9;
  --danger: #ef4444;
  --wait: #9aa4b2;
  --radius: 16px;
  --shadow: 0 12px 36px rgba(15, 23, 42, 0.20);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
  overflow-x: hidden;
}

#bgParticles {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, #ffffff 0%, #f6f8fc 100%);
}

.container { width: min(1200px, 92%); margin: 0 auto; }
.header { display:grid; justify-items:center; padding: 22px 0 10px; }
.brand { display:flex; align-items:center; gap:12px; }
.brand--center { justify-content:center; }
.brand-title { margin:0; font-weight:800; letter-spacing:-0.02em; font-size: clamp(26px, 3vw, 34px); }
.hero-copy { text-align:center; }
.subtitle { margin: 6px 0 18px; color: var(--text-muted); }

.steps {
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 16px; align-items: center; margin: 8px 0 26px;
}
.step-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  color: var(--text-on-card);
}
.step-badge {
  width: 28px; height: 28px; border-radius: 50%; display:grid; place-items:center;
  background: var(--brand); color: #fff; font-weight: 700; margin-bottom: 8px;
}
.step-title { margin: 0 0 6px; font-size: 16px; font-weight: 800; color: var(--text-on-card); }
.step-text {
  margin: 0; font-size: 14px; color: #eef3ff; opacity: 0.98; font-weight: 500;
}
.step-arrow { color: var(--brand); font-size: 26px; font-weight: 700; text-align:center; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; } .step-arrow { display:none; } }

.grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 22px;
  align-items: start;
  margin-bottom: 36px;
}
@media (max-width: 1020px) { .grid { grid-template-columns: 1fr; } }

.panel {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  color: var(--text-on-card);
}
.panel-title { margin: 4px 0 12px; font-size: 18px; font-weight: 800; }

.form { display: grid; gap: 14px; }
.form-row { display:grid; grid-template-columns: repeat(3,1fr); gap:12px; }
@media (max-width: 720px){ .form-row{ grid-template-columns:1fr; } }
.form-field { display:grid; gap:6px; }
.form-field > span { font-size:12px; color: var(--muted-on-card); font-weight: 700; }

.input {
  border: 1px solid #26366d;
  background: var(--card-2);
  color: var(--text-on-card);
  border-radius: 12px; height: 42px; padding: 0 12px; outline: none;
  font-family: inherit;
}
.input:focus { border-color: #3b57a6; box-shadow: 0 0 0 3px rgba(59, 87, 166, .35); }

.dropzone {
  border: 1.5px dashed #3b57a6;
  border-radius: 14px; padding: 22px; text-align: center;
  background: #0d1633;
  color: var(--text-on-card);
  cursor: pointer;
}
.dropzone.dragging { background: #0c1a3f; }
.dz-icon { font-size: 26px; color: #6ea0ff; }
.dz-title { font-weight: 800; margin-top: 4px; }
.dz-sub { color: var(--muted-on-card); margin-top: 2px; }
.dz-tip { color: var(--muted-on-card); margin-top: 8px; font-size: 12px; }
.link { background:none; border:none; color:#93b1ff; text-decoration: underline; cursor:pointer; font-family: inherit; }
.muted { opacity:.8; margin-left:6px; }

.actions { display:flex; gap:10px; flex-wrap:wrap; }
.btn-primary {
  background: linear-gradient(180deg, #2a44a3, #1a2e7a);
  color:#fff; border:1px solid #1a2e7a;
  padding: 11px 16px; border-radius: 12px; font-weight: 800; box-shadow: var(--shadow);
  cursor: pointer; font-family: inherit; font-size: 14px;
}
.btn-primary:hover { filter: brightness(1.02); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-ghost {
  background: transparent; color: #bcd0ff; border:1px solid #3b57a6;
  padding: 11px 14px; border-radius: 12px; font-weight: 700;
  cursor: pointer; font-family: inherit; font-size: 14px;
}
.btn-ghost.small { padding: 6px 10px; font-size: 12px; border-radius: 10px; }

.badge {
  display:inline-flex; align-items:center; gap:8px;
  padding:6px 10px; border-radius:999px; font-weight:800; font-size:12px;
  border:1px solid #2b3f84; background:#0d1633; color:#c6d6ff;
}
.badge-buy { background: rgba(14,165,233,.15); color:#7dd3fc; border-color: rgba(14,165,233,.35); }
.badge-sell { background: rgba(239,68,68,.18); color:#ff9aa2; border-color: rgba(239,68,68,.35); }
.badge-wait { background: rgba(153,164,179,.20); color:#c7d0de; border-color: rgba(153,164,179,.40); }

.result-header { margin: 10px 0 16px; font-weight: 900; color: var(--text-on-card); }
.result-block {
  border: 1px solid #26366d; background: #0d1633; border-radius: 12px; padding: 12px; margin-bottom: 14px;
}
.result-block h4 { margin: 0 0 8px; font-size: 13px; color: var(--muted-on-card); font-weight: 700; }
.notes { margin:0; color: var(--text-on-card); line-height: 1.5; }

.result-grid {
  display:grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap:10px;
}
@media (max-width: 720px){ .result-grid{ grid-template-columns: repeat(2,1fr);} }
.result-item { border: 1px solid #26366d; background: #0d1633; border-radius: 10px; padding: 10px; }
.ri-label { font-size:12px; color: var(--muted-on-card); font-weight: 600; }
.ri-value { font-weight: 800; margin-top: 4px; color: var(--text-on-card); font-size: 15px; }

.loader { display:grid; place-items:center; gap:10px; padding: 12px 0; color: var(--text-on-card); }
#loader { display: none !important; }
#loader.is-active { display: flex !important; flex-direction: column; align-items: center; }

.spinner {
  width: 22px; height: 22px; border-radius: 50%;
  border: 3px solid rgba(255,255,255,.15); border-top-color: #6ea0ff;
  animation: spin .9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.footer { padding-bottom: 40px; }
.faq-title { margin: 8px 0 14px; font-size: 18px; font-weight: 900; }
.faq { display:grid; gap:8px; }
details {
  background: var(--card);
  color: var(--text-on-card);
  border: 1px solid var(--card-border);
  border-radius: 10px; padding: 10px 12px;
}
details p { color: var(--muted-on-card); margin: 8px 2px 6px; }
summary { cursor: pointer; font-weight: 700; }
summary::-webkit-details-marker { display:none; }

.copyright { margin-top: 12px; color: var(--text-muted); font-size: 12px; text-align: center; }