/* FLASH USDT — ICO page | usdtflash.org */
:root {
  --bg: #0c0e12;
  --bg-card: #14171f;
  --bg-hero: #0f1218;
  --accent: #f59e0b;
  --accent-dim: #d97706;
  --accent-glow: rgba(245, 158, 11, 0.25);
  --text: #e5e7eb;
  --text-muted: #9ca3af;
  --border: #1f2937;
  --success: #10b981;
  --font: 'Outfit', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 14, 18, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
}

.logo-icon {
  font-size: 1.5rem;
}

.nav {
  display: flex;
  gap: 1.5rem;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--accent);
}

/* Hero */
.hero {
  position: relative;
  padding: 4rem 0 5rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-glow), transparent),
    linear-gradient(180deg, var(--bg-hero) 0%, var(--bg) 100%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  background: var(--border);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.hero-title {
  margin: 0 0 0.5rem;
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  margin: 0 0 1rem;
  font-size: 1.25rem;
  color: var(--text-muted);
  font-weight: 500;
}

.hero-desc {
  margin: 0 0 2rem;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
  color: var(--text-muted);
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #0c0e12;
}

.btn-primary:hover {
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent-dim);
  color: var(--accent);
}

/* Sections */
.section {
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
}

.section-title {
  margin: 0 0 1rem;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
}

.section-lead {
  margin: 0 0 1.5rem;
  color: var(--text-muted);
  max-width: 560px;
}

.section-lead a {
  color: var(--accent);
  text-decoration: none;
}

.section-lead a:hover {
  text-decoration: underline;
}

/* About / Features */
.features {
  list-style: none;
  padding: 0;
  margin: 0;
}

.features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0;
  color: var(--text);
}

.feature-icon {
  color: var(--success);
  font-weight: 700;
}

/* Token grid */
.token-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}

.token-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1.25rem;
}

.token-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.token-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}

/* How to */
.steps {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-muted);
}

.steps li {
  margin-bottom: 0.75rem;
}

.steps a {
  color: var(--accent);
  text-decoration: none;
}

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

.steps code {
  background: var(--bg-card);
  padding: 0.2rem 0.5rem;
  border-radius: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--accent);
}

/* Contract */
.contract-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
}

.contract-address {
  flex: 1;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text);
  word-break: break-all;
}

.btn-copy {
  flex-shrink: 0;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #0c0e12;
  border: none;
  border-radius: 0.375rem;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn-copy:hover {
  background: var(--accent-dim);
}

.btn-copy:active {
  transform: scale(0.98);
}

.btn-copy.copied {
  background: var(--success);
}

.contract-note {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.contract-note a {
  color: var(--accent);
  text-decoration: none;
}

.contract-note a:hover {
  text-decoration: underline;
}

/* Footer */
.footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  margin: 0 0 0.5rem;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.footer-disclaimer {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  opacity: 0.8;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 640px) {
  .nav {
    display: none;
  }

  .hero {
    padding: 3rem 0 4rem;
  }

  .section {
    padding: 2.5rem 0;
  }
}