/* =========================
   GLOBAL
========================= */

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: radial-gradient(circle at top, #111827, #05070d);
  color: white;
  text-align: center;
  min-height: 100vh;
}

/* =========================
   HERO
========================= */

.hero {
  padding: 70px 20px;
}

.logo {
  width: 150px;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 15px #00ffcc);
}

/* =========================
   TITLES
========================= */

h1 {
  font-size: 42px;
  margin: 10px 0;
}

h1 span {
  color: #00ffcc;
}

.subtitle {
  color: #aaa;
  margin-bottom: 25px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

/* =========================
   BUTTONS
========================= */

.buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.btn {
  padding: 12px 20px;
  border-radius: 8px;
  text-decoration: none;
  border: 1px solid #00ffcc;
  color: white;
  cursor: pointer;
  background: transparent;
  transition: 0.3s ease;
  font-size: 14px;
}

.btn:hover {
  background: #00ffcc;
  color: black;
  transform: translateY(-2px);
}

.primary {
  background: #00ffcc;
  color: black;
  border: none;
  font-weight: bold;
  box-shadow: 0 0 20px rgba(0,255,204,0.35);
}

/* =========================
   GRID
========================= */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  max-width: 1100px;
  margin: auto;
  padding: 20px;
}

/* =========================
   CARDS
========================= */

.card {
  background: rgba(17, 24, 39, 0.8);
  border: 1px solid rgba(0,255,204,0.15);
  padding: 20px;
  border-radius: 12px;
  text-align: left;
  transition: 0.3s ease;
  box-shadow: 0 0 15px rgba(0,255,204,0.05);
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(0,255,204,0.5);
  box-shadow: 0 0 25px rgba(0,255,204,0.15);
}

.card h2 {
  margin-top: 0;
  color: #00ffcc;
  font-size: 18px;
}

/* =========================
   MONOSPACE
========================= */

.mono {
  font-family: monospace;
  font-size: 12px;
  word-break: break-all;
  color: #ccc;
}

/* =========================
   LINKS
========================= */

.links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.links a {
  color: #00ffcc;
  text-decoration: none;
}

.links a:hover {
  text-decoration: underline;
}

/* =========================
   CHART
========================= */

.chart-card {
  grid-column: 1 / -1;
}

.chart-card iframe {
  width: 100%;
  height: 480px;
  border: 1px solid rgba(0,255,204,0.15);
  border-radius: 12px;
  background: #05070d;
}

/* =========================
   FOOTER
========================= */

footer {
  padding: 30px;
  color: #666;
  font-size: 12px;
}

/* =========================
   MOBILE
========================= */

@media (max-width: 600px) {

  h1 {
    font-size: 32px;
  }

  .logo {
    width: 110px;
  }

  .buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 220px;
  }

  .chart-card iframe {
    height: 420px;
  }

}