@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&family=Outfit:wght@500;800&display=swap');
:root {
  --bg-color: #0b0c10;
  --panel-bg: rgba(31, 40, 51, 0.45);
  --border-color: rgba(69, 162, 158, 0.3);
  --accent-color: #66fcf1;
  --accent-hover: #45a29e;
  --text-primary: #ffffff;
  --text-secondary: #c5c6c7;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Inter', sans-serif; background-color: var(--bg-color); color: var(--text-primary);
  display: flex; justify-content: center; align-items: center; min-height: 100vh; overflow: hidden; position: relative;
}
body::before, body::after {
  content: ''; position: absolute; width: 500px; height: 500px; border-radius: 50%; filter: blur(120px); z-index: -1;
  animation: float 10s infinite alternate ease-in-out;
}
body::before { background: radial-gradient(circle, rgba(102, 252, 241, 0.15) 0%, transparent 70%); top: -100px; left: -100px; }
body::after { background: radial-gradient(circle, rgba(69, 162, 158, 0.15) 0%, transparent 70%); bottom: -100px; right: -100px; animation-direction: alternate-reverse; }
@keyframes float { 0% { transform: translate(0, 0); } 100% { transform: translate(30px, 30px); } }
.container { width: 100%; max-width: 480px; padding: 2rem; transition: opacity 0.5s ease, transform 0.5s ease; }
.glass-panel { background: var(--panel-bg); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid var(--border-color); border-radius: 20px; padding: 3rem 2rem; box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); }
h1 { font-family: 'Outfit', sans-serif; font-size: 2.2rem; text-align: center; margin-bottom: 0.5rem; background: linear-gradient(90deg, #fff, var(--accent-color)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
p.subtitle { text-align: center; color: var(--text-secondary); margin-bottom: 2.5rem; font-size: 0.95rem; }
.input-group { position: relative; margin-bottom: 2rem; }
input { width: 100%; padding: 1rem 1.2rem; background: rgba(0, 0, 0, 0.3); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 12px; color: #fff; font-size: 1.1rem; transition: all 0.3s ease; outline: none; }
input:focus { border-color: var(--accent-color); box-shadow: 0 0 15px rgba(102, 252, 241, 0.2); }
button { width: 100%; padding: 1rem; background: var(--accent-color); color: #000; border: none; border-radius: 12px; font-size: 1.1rem; font-weight: 600; cursor: pointer; transition: all 0.3s ease; font-family: 'Outfit', sans-serif; }
button:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 10px 20px rgba(102, 252, 241, 0.3); }
button:active { transform: translateY(0); }
.hidden { display: none !important; }
.stat-box { background: rgba(0, 0, 0, 0.4); border-radius: 12px; padding: 1.5rem; text-align: center; margin-bottom: 1.5rem; border: 1px solid rgba(255,255,255,0.05); }
.stat-label { font-size: 0.9rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 1px; }
.stat-value { font-family: 'Outfit', sans-serif; font-size: 3rem; font-weight: 800; color: var(--accent-color); margin-top: 0.5rem; }
.key-box { background: rgba(255, 255, 255, 0.05); padding: 1rem; border-radius: 8px; display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; border: 1px solid rgba(255,255,255,0.1); cursor: pointer; }
.key-text { font-family: monospace; color: #fff; letter-spacing: 1px; overflow: hidden; text-overflow: ellipsis; }
.copy-btn { background: transparent; width: auto; padding: 0.5rem 1rem; font-size: 0.9rem; color: var(--accent-color); border: 1px solid var(--accent-color); }
.copy-btn:hover { background: rgba(102, 252, 241, 0.1); color: var(--accent-color); }
.btn-recharge { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.2); margin-top: 1rem; }
.btn-recharge:hover { background: rgba(255,255,255,0.05); box-shadow: none; }
.modal { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.8); display: flex; justify-content: center; align-items: center; z-index: 100; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; backdrop-filter: blur(5px); }
.modal.active { opacity: 1; pointer-events: all; }
.modal-content { background: var(--panel-bg); border: 1px solid var(--border-color); padding: 2.5rem; border-radius: 20px; text-align: center; width: 90%; max-width: 350px; transform: scale(0.9); transition: transform 0.3s ease; }
.modal.active .modal-content { transform: scale(1); }
.qr-placeholder { width: 200px; height: 200px; background: rgba(255,255,255,0.1); margin: 1.5rem auto; display: flex; align-items: center; justify-content: center; border-radius: 10px; color: var(--text-secondary); }
.close-modal { margin-top: 1rem; }