:root {
  --bg-light: #EEF3FA;
  --bg-dark: #000;
  --card-light: #fff;
  --card-dark: #020617;
  --ink: #020617;
  --blue: #1E3A8A;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', sans-serif;
  background: var(--bg-light);
  overscroll-behavior: none;
  animation: pageFade 0.8s cubic-bezier(.22,1,.36,1) both;
  transition: background 0.45s cubic-bezier(.22,1,.36,1);
}

body.dark {
  background: var(--bg-dark);
}

@keyframes pageFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes cardPop {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes softPulse {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.025); }
  100% { transform: scale(1); }
}

.page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.card {
  position: relative;
  width: 100%;
  max-width: 420px;
  background: var(--card-light);
  border: 4px solid var(--ink);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 8px 8px 0 var(--ink);
  animation: cardPop 0.6s cubic-bezier(.22,1,.36,1) both;
  transition:
    background 0.45s cubic-bezier(.22,1,.36,1),
    color 0.45s cubic-bezier(.22,1,.36,1),
    transform 0.35s cubic-bezier(.22,1,.36,1),
    box-shadow 0.35s cubic-bezier(.22,1,.36,1);
}

@media (hover: hover) {
  .card:hover {
    transform: translateX(6px) rotate(-1deg);
    box-shadow: 10px 10px 0 var(--ink);
  }
}

body.dark .card {
  background: var(--card-dark);
  color: white;
}

.toggle {
  position: absolute;
  top: -12px;
  right: -12px;
  background: var(--blue);
  border: 4px solid var(--ink);
  border-radius: 999px;
  padding: 6px 12px;
  font-weight: 900;
  font-size: 12px;
  color: white;
  box-shadow: 4px 4px 0 var(--ink);
  cursor: pointer;
  transition:
    transform 0.25s cubic-bezier(.22,1,.36,1),
    box-shadow 0.25s cubic-bezier(.22,1,.36,1);
}

.toggle:hover {
  transform: translateY(-2px);
}

.header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.avatar {
  width: 72px;
  height: 72px;
  background: var(--blue);
  border: 4px solid var(--ink);
  border-radius: 50%;
  box-shadow: 6px 6px 0 var(--ink);
  animation: softPulse 4s ease-in-out infinite;
}

.username {
  font-size: 36px;
  font-weight: 900;
  text-transform: lowercase;
  color: var(--ink);
  transition: color 0.45s cubic-bezier(.22,1,.36,1);
}

body.dark .username {
  color: white;
}

.pressable {
  cursor: pointer;
  transition:
    transform 0.25s cubic-bezier(.22,1,.36,1),
    box-shadow 0.25s cubic-bezier(.22,1,.36,1);
}

.pressable:active {
  transform: translate(4px, 4px) scale(0.98);
  box-shadow: none;
}

.copy-btn {
  width: 100%;
  margin-bottom: 24px;
  background: var(--blue);
  border: 4px solid var(--ink);
  border-radius: 16px;
  padding: 12px;
  font-weight: 700;
  color: white;
  box-shadow: 6px 6px 0 var(--ink);
}

.copy-btn:hover {
  transform: translateY(-2px);
}

.links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.link-btn {
  background: white;
  border: 4px solid var(--ink);
  border-radius: 16px;
  padding: 14px 16px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  box-shadow: 6px 6px 0 var(--ink);
  transition:
    transform 0.3s cubic-bezier(.22,1,.36,1),
    box-shadow 0.3s cubic-bezier(.22,1,.36,1),
    background 0.45s cubic-bezier(.22,1,.36,1),
    color 0.45s cubic-bezier(.22,1,.36,1);
}

.link-btn:hover {
  transform: translate(6px, -6px);
  box-shadow: 10px 10px 0 var(--ink);
}

.link-btn:active {
  transform: translate(4px, 4px);
  box-shadow: none;
}

body.dark .link-btn {
  background: #0b1220;
  color: white;
}

.link-btn div:last-child {
  font-size: 12px;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.link-btn:hover div:last-child {
  opacity: 1;
}