*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  margin: 0;
  background: #020617;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  /* Allow scrolling when cards expand */
  overflow-y: auto;
  padding: 40px 20px;
}

.wallet-dashboard {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.header-text {
  text-align: center;
  margin-bottom: 50px;
  color: #f8fafc;
}

.header-text h2 {
  font-size: 2.5rem;
  margin: 0 0 10px 0;
  letter-spacing: -1px;
}

.header-text p {
  color: #94a3b8;
  margin: 0;
  font-size: 1.125rem;
}

.deck-container {
  position: relative;
  width: 320px;
  /* Height when closed, adjusts via JS when opened */
  height: 250px;
  cursor: pointer;
  transition: height 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.crypto-card {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 200px;
  border-radius: 24px;
  padding: 2px;
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.5s ease, opacity 0.5s ease;
  will-change: transform;
}

.card-inner {
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  width: 100%;
  height: 100%;
  border-radius: 22px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: #ffffff;
  z-index: 2;
  position: relative;
}

.card-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 24px;
  z-index: 1;
  opacity: 0.8;
}

.btc-card .card-glow { background: linear-gradient(135deg, #f59e0b, #ea580c); }
.eth-card .card-glow { background: linear-gradient(135deg, #8b5cf6, #4f46e5); }
.sol-card .card-glow { background: linear-gradient(135deg, #10b981, #0ea5e9); }

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.coin-name {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 1px;
}

.card-middle {
  margin: 20px 0;
}

.balance {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 4px;
  letter-spacing: -0.5px;
}

.fiat {
  font-size: 1rem;
  color: #94a3b8;
  font-weight: 500;
}

.card-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: "Courier New", Courier, monospace;
  font-size: 1.1rem;
  color: #cbd5e1;
  letter-spacing: 2px;
}

/* Base Stacked State */
.pos-1 { z-index: 3; transform: translateY(0) scale(1); box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.pos-2 { z-index: 2; transform: translateY(16px) scale(0.95); opacity: 0.9; }
.pos-3 { z-index: 1; transform: translateY(32px) scale(0.9); opacity: 0.8; }

/* Expanded List State - 100% Visibility */
.deck-container.is-open .crypto-card {
  opacity: 1;
  box-shadow: 0 15px 35px rgba(0,0,0,0.4);
}

/* Card 1 stays at top */
.deck-container.is-open .pos-1 {
  transform: translateY(0) scale(1);
}

/* Card 2 drops down (200px height + 20px gap) */
.deck-container.is-open .pos-2 {
  transform: translateY(220px) scale(1);
}

/* Card 3 drops further down (440px total) */
.deck-container.is-open .pos-3 {
  transform: translateY(440px) scale(1);
}

const deck = document.getElementById("card-deck");

deck.addEventListener("click", function() {
  deck.classList.toggle("is-open");
  
  if (deck.classList.contains("is-open")) {
    /* Expand container height to fit all 3 cards (200px each + 20px gaps) */
    deck.style.height = "680px";
  } else {
    /* Collapse container height back to original */
    deck.style.height = "250px";
  }
});