:root {
  --main-bg: #0d0d0d;
  --primary: #b47aff;
  --secondary: #fff;
  --accent: #ededed;
  --card-bg: #181818;
  --border-radius: 18px;
}

html, body {
  height: 100%;
  margin: 0;
  font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
  background: var(--main-bg);
  color: var(--secondary);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background: var(--main-bg);
  padding: 24px 0 0 0;
}
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: var(--secondary);
}
nav ul {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}
nav a {
  color: var(--secondary);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 400;
  transition: color 0.3s;
}
nav a:hover {
  color: var(--primary);
}
.cta button {
  background: var(--primary);
  color: var(--secondary);
  border: none;
  padding: 10px 24px;
  border-radius: var(--border-radius);
  font-size: 1rem;
  cursor: pointer;
  transition: box-shadow 0.3s;
}
.cta button:hover {
  box-shadow: 0 0 0 2px var(--accent);
}

/* Hero */
.hero {
  background: var(--card-bg);
  margin-top: 32px;
  border-radius: var(--border-radius);
  padding: 48px 0 32px 0;
  text-align: center;
}
.hero h1 {
  color: var(--primary);
  font-size: 2.2rem;
}
.tagline {
  color: var(--secondary);
  font-size: 1.2rem;
  margin: 12px 0 28px 0;
}
.hero-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
}
.primary-btn,
.secondary-btn {
  padding: 13px 32px;
  border-radius: var(--border-radius);
  font-size: 1.05rem;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.4s;
}
.primary-btn {
  background: var(--primary);
  color: var(--secondary);
}
.primary-btn:hover {
  background: #8a44ff;
}
.secondary-btn {
  background: var(--accent);
  color: var(--main-bg);
}
.secondary-btn:hover {
  background: var(--primary);
  color: var(--secondary);
}

/* Features Section */
.features {
  margin: 48px 0;
}
.features .grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 32px 20px;
  box-shadow: 0 4px 24px rgba(30,0,60,0.08);
}
.features h2 {
  color: var(--primary);
  font-size: 1.2rem;
}
.features p {
  color: var(--accent);
  font-size: 1rem;
}

/* Steps Section */
.steps {
  margin: 48px 0;
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 32px 0;
}
.steps h2 {
  color: var(--primary);
  text-align: center;
  font-size: 1.4rem;
  margin-bottom: 32px;
}
.step-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 23px;
  padding: 0 20px;
}
.step {
  background: var(--main-bg);
  border-radius: var(--border-radius);
  padding: 28px 15px;
}
.step-icon {
  display: block;
  background: var(--primary);
  color: var(--main-bg);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  text-align: center;
  line-height: 34px;
  font-size: 1.1rem;
  font-weight: bold;
  margin-bottom: 12px;
}
.steps h3 {
  color: var(--secondary);
  font-size: 1.15rem;
  margin: 0 0 8px 0;
}
.steps p {
  color: var(--accent);
  font-size: 0.98rem;
}

/* Security Section */
.security {
  margin: 48px auto;
}
.security h2 {
  color: var(--primary);
  text-align: center;
  font-size: 1.3rem;
  margin-bottom: 32px;
}
.security-list.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  padding: 0;
}
.security-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.security-card span {
  font-size: 1.6rem;
  margin-bottom: 14px;
}
.security-card h3 {
  color: var(--secondary);
  font-size: 1.02rem;
  margin-bottom: 8px;
}
.security-card p {
  color: var(--accent);
  font-size: 0.98rem;
}

/* Coin Search Section */
.coin-support {
  margin: 56px auto;
  text-align: center;
}
.coin-support h2 {
  color: var(--primary);
  font-size: 1.15rem;
  margin-bottom: 18px;
}
.coin-support input {
  width: 260px;
  padding: 11px 14px;
  border-radius: var(--border-radius);
  border: none;
  margin-bottom: 10px;
  font-size: 1rem;
  background: var(--accent);
  color: var(--main-bg);
}
.coin-icons {
  margin-top: 10px;
  display: flex;
  gap: 18px;
  justify-content: center;
}
.coin-icons span {
  background: var(--card-bg);
  color: var(--primary);
  padding: 7px 18px;
  border-radius: var(--border-radius);
  font-weight: 550;
  font-size: 1rem;
}

/* Footer */
footer {
  background: var(--main-bg);
  padding: 36px 0 14px 0;
  color: var(--accent);
}
.footer-content {
  display: flex;
  flex-direction: column;
  gap: 22px;
  align-items: center;
  text-align: center;
}
.footer-logo {
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--primary);
  margin-bottom: 12px;
}
.footer-links {
  display: flex;
  gap: 40px;
  margin-bottom: 15px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links h4 {
  color: var(--secondary);
  font-size: 1.09rem;
  margin-bottom: 7px;
}
.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 6px;
}
.footer-links a {
  color: var(--accent);
  text-decoration: none;
  font-size: 1rem;
  transition: color 0.28s;
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-copy {
  font-size: 0.95rem;
  color: var(--accent);
}

@media only screen and (max-width: 800px) {
  .nav-bar, .footer-links {
    flex-direction: column;
    align-items: center;
    gap: 18px;
  }
  .steps .step-list, .features .grid, .security-list.grid {
    grid-template-columns: 1fr;
  }
}