/* 下载页样式：纯黑底 + 荧光。
 *
 * 配色里那两个金/紫（--gold / --violet）不是随手挑的：加载器的 Login 按钮描边就是
 * 200,160,110 -> 130,80,190 这条渐变（见 license.cpp 的 AcmeLgDrawLoginButton），
 * 沿用它是为了让"网页验卡页"和"程序里的验卡页"看起来是同一个东西。
 */

:root {
  --neon:   #39ff14;   /* 主荧光 */
  --neon2:  #00e5ff;   /* 次荧光 */
  --gold:   #ffd479;   /* 加载器 Login 按钮描边起点 */
  --violet: #9a5bd6;   /* 加载器 Login 按钮描边终点 */
  --bad:    #ff3b3b;
  --dim:    #7d8590;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: #000;
  color: #e8ffe8;
  font-family: ui-monospace, "Cascadia Mono", Consolas, "DejaVu Sans Mono", monospace;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* 背景装饰：中心光晕 + 横向扫描线 + 极淡的竖网格。纯 CSS，没有图片。 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(115vmin 115vmin at 50% 42%, rgba(0, 229, 255, .075), transparent 62%),
    repeating-linear-gradient(0deg, rgba(57, 255, 20, .045) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(57, 255, 20, .022) 0 1px, transparent 1px 3px);
}

.card {
  position: relative;
  width: min(92vw, 430px);
  padding: 34px 30px 30px;
  background: #000;
  border: 1px solid rgba(57, 255, 20, .34);
  border-radius: 14px;
  /* 外发光 + 内侧一点点冷光，让纯黑卡片还能看出边界 */
  box-shadow:
    0 0 22px rgba(57, 255, 20, .16),
    0 0 90px rgba(0, 229, 255, .09),
    inset 0 0 60px rgba(0, 229, 255, .04);
}

.brand {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: .42em;
  text-indent: .42em;              /* 抵消 letter-spacing 造成的右侧空档，让字看起来居中 */
  text-align: center;
  color: #dfffe6;
  text-shadow: 0 0 6px var(--neon), 0 0 24px rgba(57, 255, 20, .5);
}

.sub {
  margin: 8px 0 0;
  text-align: center;
  font-size: 10.5px;
  letter-spacing: .3em;
  text-indent: .3em;
  text-transform: uppercase;
  color: var(--dim);
}

#key {
  width: 100%;
  margin-top: 26px;
  padding: 14px 15px;
  background: #040704;
  color: #eaffea;
  border: 1px solid rgba(57, 255, 20, .26);
  border-radius: 9px;
  font: inherit;
  font-size: 14px;
  letter-spacing: .06em;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}

#key::placeholder { color: #4b594b; letter-spacing: .1em; }

#key:focus {
  border-color: var(--neon);
  box-shadow: 0 0 12px rgba(57, 255, 20, .34), inset 0 0 26px rgba(57, 255, 20, .07);
}

#go {
  width: 100%;
  margin-top: 14px;
  padding: 14px;
  border-radius: 9px;
  border: 1.5px solid transparent;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  letter-spacing: .24em;
  text-indent: .24em;
  color: #f6ecff;
  /* 两层背景：内层填深色，外层做边框的渐变（padding-box / border-box 各取一层） */
  background-image: linear-gradient(#0b0708, #0b0708), linear-gradient(90deg, var(--gold), var(--violet));
  background-origin: border-box;
  background-clip: padding-box, border-box;
  box-shadow: 0 0 14px rgba(154, 91, 214, .26);
  transition: box-shadow .15s, transform .05s;
}

#go:hover:not(:disabled) {
  box-shadow: 0 0 20px rgba(255, 212, 121, .34), 0 0 38px rgba(154, 91, 214, .3);
}

#go:active:not(:disabled) { transform: translateY(1px); }

#go:disabled { opacity: .45; cursor: default; }

.bar {
  display: none;
  margin-top: 22px;
  height: 6px;
  background: #0a0f0a;
  border: 1px solid rgba(57, 255, 20, .22);
  border-radius: 999px;
  overflow: hidden;
}

.bar > i {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--neon2), var(--neon));
  box-shadow: 0 0 12px var(--neon);
  transition: width .12s linear;
}

.pct {
  display: none;
  margin-top: 10px;
  text-align: center;
  font-size: 22px;
  letter-spacing: .12em;
  color: #dfffe6;
  text-shadow: 0 0 9px rgba(57, 255, 20, .55);
}

.msg {
  margin-top: 14px;
  min-height: 17px;
  text-align: center;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--dim);
}

.msg.bad {
  color: var(--bad);
  text-shadow: 0 0 10px rgba(255, 59, 59, .45);
}