@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&display=swap');

:root{
  --bg:#06080c;
  --card:#0b0e14;
  --line:#1b2230;
  --txt:#d9e8ff;
  --muted:#9ecbff;
  --accent:#29baff;
  --accent2:#0066ff;
  --danger:#ff4d6d;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:'Share Tech Mono', ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, 'Noto Sans TC', sans-serif;
  color:var(--txt);
  background: radial-gradient(circle at 20% 0%, #0b0d13, var(--bg) 70%);
  text-align:center;
}
.hidden{display:none !important}

/* 背景 Canvas */
#bg{
  position:fixed; inset:0;
  width:100vw; height:100vh;
  z-index:-1;
  background: radial-gradient(1200px 800px at 10% -10%, #0b1530 0%, transparent 60%),
              radial-gradient(1200px 800px at 110% 10%, #061a35 0%, transparent 60%);
}

/* Nav */
.nav{
  position:sticky; top:0; z-index:10;
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 20px;
  border-bottom:1px solid var(--line);
  background:rgba(8,12,18,.55); backdrop-filter: blur(8px) saturate(140%);
}
.logo{
  font-size:1.2rem; letter-spacing:.5px; color:var(--accent);
  text-shadow:0 0 8px var(--accent2), 0 0 14px var(--accent);
}
.glitch{position:relative}
.glitch::before,.glitch::after{
  content:attr(data-text); position:absolute; left:0; top:0; width:100%;
  overflow:hidden; clip:rect(0,900px,0,0);
  animation:glitch 3s infinite linear alternate-reverse;
}
.glitch::before{ text-shadow:-2px 0 var(--accent2) }
.glitch::after { text-shadow: 2px 0 var(--accent) }
@keyframes glitch{
  0%{clip:rect(20px,9999px,22px,0)}25%{clip:rect(50px,9999px,52px,0)}
  50%{clip:rect(80px,9999px,82px,0)}75%{clip:rect(40px,9999px,42px,0)}
  100%{clip:rect(10px,9999px,12px,0)}
}

/* 通用按鈕 */
button{cursor:pointer; font-weight:700}
.btn-primary{
  background:linear-gradient(90deg,var(--accent2),var(--accent));
  border:0; color:#fff; padding:.65rem 1.2rem; border-radius:12px;
  box-shadow:0 0 12px rgba(0,102,255,.35);
  transition:transform .15s, box-shadow .15s, filter .15s;
}
.btn-primary:hover{ transform:translateY(-1px); box-shadow:0 0 18px rgba(0,102,255,.55) }
.btn-secondary{
  background:#0f2948; border:1px solid #184d8a; color:#d9e8ff;
  padding:.6rem 1rem; border-radius:10px;
}
.btn-ghost{
  background:transparent; border:1px solid var(--line); color:var(--txt);
  padding:.5rem .9rem; border-radius:10px;
}
.w-full{ width:100% }

/* 藍色 spark 標題底線 */
.spark{
  display:inline-block; position:relative; color:var(--accent);
  transition:color .25s, text-shadow .25s;
}
.spark::after{
  content:""; position:absolute; left:0; right:0; bottom:-8px; height:3px; border-radius:999px;
  background:linear-gradient(90deg,var(--accent2),var(--accent));
  box-shadow:0 0 10px var(--accent2), 0 0 16px var(--accent); opacity:.85
}
.spark:hover{ color:#6ec5ff; text-shadow:0 0 12px var(--accent), 0 0 22px var(--accent2) }
.spark::before{
  content:""; position:absolute; bottom:-10px; left:-20%; width:40%; height:7px; border-radius:999px; opacity:0;
  background:linear-gradient(90deg,transparent,#fff,transparent); filter:blur(3px)
}
.spark:hover::before{ animation:spark-scan 1s ease forwards }
@keyframes spark-scan{ 0%{left:-20%;opacity:0} 20%{opacity:1} 100%{left:80%;opacity:0} }

/* 登入註冊盒 */
.auth-box{
  margin:10vh auto 0;
  background:linear-gradient(145deg, #0c111b, #0b0e14);
  display:inline-block; padding:2rem 2.5rem; border-radius:18px;
  border:1px solid var(--line);
  box-shadow:0 0 28px rgba(0,102,255,.18);
  min-width: 320px;
}
.auth-box h1{ color:var(--accent); margin:.2rem 0 1.2rem }
.form input{
  display:block; width:280px; max-width:80vw;
  margin:.55rem auto; padding:.65rem .8rem; border-radius:10px; border:1px solid var(--line);
  background:#0b111a; color:var(--txt); text-align:center;
}
.input-wrapper{ position:relative; display:block }
.toggle-text{
  position:absolute; right:12px; top:50%; transform:translateY(-50%);
  color:#9ecbff; font-size:.9rem; cursor:pointer; user-select:none;
}
.toggle-text:hover{ color:#fff }
.switch{ margin-top:.8rem; color:#a8b9d1 }
.link{ color:var(--accent); cursor:pointer }

/* Profile 主體 */
.profile{ margin: 28px auto 24px; padding:0 16px; max-width: 540px; }
.avatar-lg{
  width:120px; height:120px; border-radius:50%;
  border:3px solid var(--accent); cursor:pointer; transition: transform .22s;
  box-shadow:0 0 18px rgba(0,102,255,.25);
}
.avatar-lg:hover{ transform:scale(1.05) }
.profile h2{ margin:10px 0 0; color:#cfe6ff }

/* 餘額卡片 藍光 */
.balance-box{
  --mx:50%; --my:50%; --angle:0deg; --shine-opacity:0; --edge-opacity:0; --border-w:2px;
  position:relative; margin:16px auto; width:min(360px,92%);
  border-radius:16px; padding:16px 16px 18px;
  background:linear-gradient(145deg, #0c111b, #0f1522);
  border:1px solid var(--line);
  box-shadow:0 0 22px rgba(0,102,255,.22);
  overflow:hidden;
}
.balance-box::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  background: radial-gradient(220px circle at var(--mx) var(--my),
    rgba(255,255,255,.10), rgba(0,140,255,.08) 35%, rgba(0,102,255,.05) 55%, transparent 70%);
  opacity: var(--shine-opacity); mix-blend-mode: screen; transition: opacity .15s ease-out; z-index:1;
}
.balance-box::before{
  content:""; position:absolute; inset:0; padding:var(--border-w); border-radius:16px;
  background: conic-gradient(from calc(var(--angle) - 6deg),
    transparent 0deg, rgba(82,140,255,.9) 8deg, rgba(82,140,255,.35) 14deg, transparent 22deg 360deg);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events:none; opacity:var(--edge-opacity); transition:opacity .15s ease-out; z-index:2;
}
.balance-box p,.balance-box h1,.balance-box .btn-primary{ position:relative; z-index:3 }
.balance-box p{ margin:0; color:#b3c9ff }
.balance-box h1{
  margin:.35rem 0 0; font-size:2.2rem;
  background:linear-gradient(120deg,#8fc3ff 0%,#ffffff 50%,#8fc3ff 100%);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-size:200% 200%;
  transition: background-position .45s ease;
}
.balance-box:hover h1{ background-position: 100% 0 }

/* 互動：滑進卡片亮起 */
.balance-box:hover{ --shine-opacity:1; --edge-opacity:1; }
.balance-box:has(button:focus){ --shine-opacity:1; --edge-opacity:1; }

/* Action 區 */
.action-btns{
  display:grid; grid-template-columns:repeat(3,1fr); gap:10px;
  width:min(540px,92%); margin:14px auto 0;
}
@media (max-width:520px){ .action-btns{ grid-template-columns:1fr } }

/* Modal is-open */
.modal{ display:none; position:fixed; inset:0; background:rgba(0,0,0,.55); justify-content:center; align-items:center; z-index:100 }
.modal.is-open{ display:flex !important }
.modal-content{
  background:#0c111b; border:1.5px solid var(--accent2); border-radius:14px; padding:16px; width:min(360px,92%); text-align:center;
  box-shadow:0 0 18px rgba(0,102,255,.45);
}
.modal-content input{
  width:100%; margin:.5rem 0; padding:.65rem; border-radius:10px; border:1px solid var(--line); background:#0b111a; color:var(--txt);
}
.modal-actions{ display:flex; gap:8px; justify-content:flex-end; margin-top:10px }

/* 交易紀錄 */
.tx-box{
  margin: 18px auto; width:min(540px,92%);
  background:#0c111b; border:1px solid var(--line); border-radius:14px;
  box-shadow:0 0 18px rgba(0,102,255,.20); padding:12px;
  scroll-margin-top:84px;
}
.tx-box table{ width:100%; border-collapse: collapse }
.tx-box th,.tx-box td{ padding:.5rem; border-bottom:1px solid rgba(255,255,255,.08) }
.tx-box td:nth-child(3){ color:var(--accent2); font-weight:700 }

/* 小彈窗 for popup() */
.popup{
  position:fixed; left:50%; top:18px; transform:translateX(-50%); z-index:2000;
  background:#0c111b; color:var(--txt); border:1px solid #184d8a;
  padding:10px 14px; border-radius:10px; opacity:.01; transition:.2s;
  box-shadow:0 10px 24px rgba(0,0,0,.35);
}
.popup.show{ opacity:1; top:22px }
.popup.success{ border-color:#1e8fff }
.popup.error{ border-color:#e8557a }
/* 🔄 Modal 開關動畫 */
.modal {
  opacity: 0;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(6px);
  transition: opacity 0.25s ease;
}
.modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  transform: scale(0.8);
  transition: transform 0.25s ease, opacity 0.25s ease;
  opacity: 0;
}
.modal.is-open .modal-content {
  transform: scale(1);
  opacity: 1;
}