/* The True Value Of Pi — Modern Redesign */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --gold: #d4a843;
  --gold-light: #f0d080;
  --gold-dark: #a07830;
  --navy: #0a1628;
  --navy-light: #132044;
  --cream: #f5f0e8;
  --text: #e8e0d0;
  --text-muted: #a09880;
  --border: rgba(212, 168, 67, 0.3);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Georgia', 'Times New Roman', serif;
  background: var(--navy);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

/* ── Background ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(212, 168, 67, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(212, 168, 67, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 0%, rgba(255, 255, 255, 0.02) 0%, transparent 30%);
  pointer-events: none;
  z-index: 0;
}

/* ── Navigation ── */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.header h1 {
  font-size: 18px;
  color: var(--gold);
  font-weight: 400;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.header h1 span {
  font-weight: 700;
  color: var(--gold-light);
}

.menu ul {
  list-style: none;
  display: flex;
  gap: 8px;
}

.menu a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 1px;
  padding: 8px 14px;
  border-radius: 4px;
  transition: all 0.3s;
  font-family: 'Helvetica Neue', Arial, sans-serif;
}

.menu a:hover {
  color: var(--gold-light);
  background: rgba(212, 168, 67, 0.1);
}

/* ── Hero ── */
.Pi {
  margin-top: 120px;
  text-align: center;
  padding: 60px 20px 40px;
}

.Pi h2 {
  font-size: 72px;
  color: var(--gold-light);
  font-weight: 700;
  letter-spacing: 4px;
  text-shadow: 0 0 40px rgba(212, 168, 67, 0.3);
  animation: fadeIn 1s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Content ── */
main {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px 100px;
}

main h3 {
  color: var(--gold);
  font-weight: 400;
  font-size: 20px;
  line-height: 1.6;
  margin: 30px 0;
  text-align: center;
}

main img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  display: block;
  margin: 30px auto;
}

/* ── Links Section ── */
.section-1 {
  text-align: center;
  padding: 40px 0;
}

#links {
  font-size: 28px;
  color: var(--gold);
  margin-bottom: 30px;
  font-weight: 400;
  letter-spacing: 2px;
}

.link_list {
  text-align: center;
}

.link_list a {
  display: inline-block;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 16px;
  padding: 10px 20px;
  margin: 4px 0;
  border: 1px solid transparent;
  border-radius: 8px;
  transition: all 0.3s;
  font-family: 'Helvetica Neue', Arial, sans-serif;
}

.link_list a:hover {
  color: var(--gold-light);
  border-color: var(--border);
  background: rgba(212, 168, 67, 0.05);
}

.link_list img {
  max-width: 400px;
  margin: 20px auto;
  border-radius: 12px;
}

/* ── Sections ── */
section {
  margin: 60px 0;
}

section h4, section h5 {
  color: var(--gold);
  font-weight: 400;
  margin: 20px 0;
  font-size: 18px;
}

section h4 a, section h5 a {
  color: var(--gold-light);
}

/* ── Math Content ── */
section p {
  color: var(--text);
  font-size: 16px;
  line-height: 1.9;
  margin: 16px 0;
  padding: 16px 24px;
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid var(--border);
  border-radius: 0 8px 8px 0;
}

section strong {
  color: var(--gold-light);
}

/* ── Footer ── */
footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  z-index: 100;
}

footer .social {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  height: 48px;
}

.fa {
  color: var(--text-muted);
  font-size: 20px;
  transition: color 0.3s;
}

.fa:hover {
  color: var(--gold-light);
}

/* ── Buttons ── */
.button, a[href*="bitcoin"], a[href*="donate"] {
  display: inline-block;
  padding: 10px 28px;
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  color: var(--navy) !important;
  border-radius: 6px;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: all 0.3s;
  text-decoration: none;
  font-family: 'Helvetica Neue', Arial, sans-serif;
}

.button:hover, a[href*="bitcoin"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 168, 67, 0.3);
}

/* ── Video link ── */
a[href*="video"] strong {
  color: var(--gold-light);
  font-size: 20px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .header {
    flex-direction: column;
    height: auto;
    padding: 12px 20px;
    gap: 8px;
  }
  
  .header h1 {
    font-size: 14px;
  }
  
  .menu a {
    font-size: 11px;
    padding: 6px 10px;
  }
  
  .Pi {
    margin-top: 140px;
  }
  
  .Pi h2 {
    font-size: 42px;
  }
  
  main h3 {
    font-size: 17px;
  }
  
  #links {
    font-size: 22px;
  }
  
  .link_list a {
    font-size: 14px;
    padding: 8px 12px;
  }
  
  section p {
    font-size: 15px;
    padding: 12px 16px;
  }
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--navy);
}
::-webkit-scrollbar-thumb {
  background: var(--gold-dark);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--gold);
}

/* ── Pi Decorative Badge ── */
.pi-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100px;
  height: 100px;
  border: 2px solid var(--gold-dark);
  border-radius: 50%;
  margin: 20px auto;
  font-size: 14px;
  color: var(--gold);
  text-align: center;
  line-height: 1.4;
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 20px rgba(212, 168, 67, 0.2); }
  50% { box-shadow: 0 0 40px rgba(212, 168, 67, 0.4); }
}

/* ── Donate Button ── */
.donate-btn {
  display: inline-block;
  padding: 12px 32px;
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  color: var(--navy);
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 15px;
  letter-spacing: 1px;
  transition: all 0.3s;
  margin: 20px 0;
}

.donate-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(212, 168, 67, 0.3);
}

/* ── Math Block ── */
.math-block {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 32px;
  margin: 24px 0;
  font-family: 'Georgia', serif;
  text-align: center;
}

.math-block code {
  font-size: 24px;
  color: var(--gold-light);
  background: none;
}

/* ── Counter ── */
.counter {
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  margin: 40px 0;
}