:root {
  --bg: #10151f;
  --panel: #1a212f;
  --panel-border: #2b3547;
  --text: #e7ecf5;
  --text-dim: #97a3b8;
  --green: #22c55e;
  --green-bright: #4ade80;
  --red: #ef4444;
  --red-bright: #f87171;
  --accent: #5eb8ff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}

/* ---------- background: night-side earth from orbit ---------- */

.sky {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background:
    radial-gradient(ellipse 140% 90% at 50% 120%, #0d2b3e 0%, #0a1a2b 35%, #0a0e17 65%, #090c13 100%);
}

.stars {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 15%, rgba(255,255,255,.8), transparent 100%),
    radial-gradient(1px 1px at 25% 8%, rgba(255,255,255,.6), transparent 100%),
    radial-gradient(1.5px 1.5px at 40% 20%, rgba(255,255,255,.7), transparent 100%),
    radial-gradient(1px 1px at 60% 5%, rgba(255,255,255,.5), transparent 100%),
    radial-gradient(1px 1px at 75% 25%, rgba(255,255,255,.7), transparent 100%),
    radial-gradient(1.5px 1.5px at 90% 12%, rgba(255,255,255,.6), transparent 100%),
    radial-gradient(1px 1px at 15% 35%, rgba(255,255,255,.5), transparent 100%),
    radial-gradient(1px 1px at 50% 30%, rgba(255,255,255,.6), transparent 100%),
    radial-gradient(1px 1px at 85% 40%, rgba(255,255,255,.5), transparent 100%);
  opacity: .8;
}

.aurora {
  position: absolute;
  top: -20%;
  width: 70%;
  height: 55%;
  filter: blur(60px);
  opacity: .35;
  mix-blend-mode: screen;
  border-radius: 50%;
}

.aurora-pink {
  left: -10%;
  background: radial-gradient(ellipse at center, #ff5fb2 0%, transparent 70%);
  transform: rotate(-8deg);
}

.aurora-green {
  right: -10%;
  background: radial-gradient(ellipse at center, #33e6a8 0%, transparent 70%);
  transform: rotate(6deg);
}

.earth-glow {
  position: absolute;
  left: 50%;
  bottom: -55%;
  width: 160%;
  height: 90%;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(ellipse at center, #14324a 0%, #0d2135 40%, transparent 72%);
  box-shadow: 0 -6px 90px 10px rgba(94, 184, 255, .18);
}

.earth-lights {
  position: absolute;
  left: 50%;
  bottom: -62%;
  width: 150%;
  height: 80%;
  transform: translateX(-50%);
  border-radius: 50%;
  opacity: .8;
  background-image:
    radial-gradient(1.5px 1.5px at 30% 15%, #ffd98a, transparent 100%),
    radial-gradient(1px 1px at 34% 18%, #ffd98a, transparent 100%),
    radial-gradient(2px 2px at 45% 10%, #ffe6b0, transparent 100%),
    radial-gradient(1px 1px at 50% 20%, #ffd98a, transparent 100%),
    radial-gradient(1.5px 1.5px at 55% 12%, #ffe6b0, transparent 100%),
    radial-gradient(1px 1px at 60% 22%, #ffd98a, transparent 100%),
    radial-gradient(2px 2px at 65% 14%, #ffe6b0, transparent 100%),
    radial-gradient(1px 1px at 70% 9%, #ffd98a, transparent 100%),
    radial-gradient(1.5px 1.5px at 40% 24%, #ffd98a, transparent 100%),
    radial-gradient(1px 1px at 25% 11%, #ffd98a, transparent 100%);
}

/* ---------- layout ---------- */

.page {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.topbar h1 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: .3px;
  margin: 0;
}

.cash-box {
  background: rgba(26, 33, 47, .75);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 10px 18px;
  text-align: right;
  backdrop-filter: blur(6px);
}

.cash-label {
  display: block;
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .08em;
}

.cash-value {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 40px;
}

.card {
  background: rgba(26, 33, 47, .8);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 18px;
  backdrop-filter: blur(6px);
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
}

.card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.logo {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: #fff;
  object-fit: contain;
  padding: 3px;
}

.symbol {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .02em;
}

.name {
  font-size: 12px;
  color: var(--text-dim);
}

.price-row {
  margin-bottom: 8px;
}

.price {
  font-size: 28px;
  font-weight: 700;
}

.range-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-dim);
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--panel-border);
}

.range-label {
  text-transform: uppercase;
  letter-spacing: .06em;
}

.position-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
}

.stat-label {
  display: block;
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.stat-value {
  display: block;
  font-size: 15px;
  font-weight: 600;
  margin-top: 2px;
}

.pl.positive { color: var(--green-bright); }
.pl.negative { color: var(--red-bright); }
.pl.neutral { color: var(--text-dim); }

.button-row {
  display: flex;
  gap: 10px;
}

.btn {
  flex: 1;
  padding: 10px 0;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .05s ease, filter .15s ease;
}

.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn.buy {
  background: var(--green);
  color: #08150c;
}
.btn.buy:hover { filter: brightness(1.1); }

.btn.sell {
  background: var(--red);
  color: #1a0808;
}
.btn.sell:hover { filter: brightness(1.1); }

.note {
  text-align: center;
  font-size: 12px;
  color: var(--text-dim);
  padding-top: 10px;
}

@media (max-width: 480px) {
  .price { font-size: 22px; }
  .topbar h1 { font-size: 18px; }
}