:root {
  --bg: #0a0e1a;
  --card: rgba(255, 255, 255, 0.055);
  --card-border: rgba(255, 255, 255, 0.1);
  --text: #e8ecf4;
  --dim: #8b93a7;
  --acc: #6d8bff;
  --acc2: #9e6dff;
  --ok: #3ddc97;
  --err: #ff6b81;
  --r: 18px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* 背景光斑 */
.orb {
  position: fixed; border-radius: 50%; filter: blur(110px); opacity: .32;
  pointer-events: none; z-index: 0;
}
.orb-a { width: 46vw; height: 46vw; left: -12vw; top: -14vw; background: #2b4bff; animation: drift 26s ease-in-out infinite alternate; }
.orb-b { width: 40vw; height: 40vw; right: -10vw; bottom: -12vw; background: #7a3dff; animation: drift 32s ease-in-out infinite alternate-reverse; }
@keyframes drift { to { transform: translate(6vw, 5vw) scale(1.12); } }

.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px clamp(16px, 4vw, 44px);
  background: rgba(10, 14, 26, 0.72); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.brand { display: flex; align-items: center; gap: 10px; font-size: 17px; }
.brand .logo { font-size: 22px; }
.brand .dim { font-size: 12px; margin-left: 2px; letter-spacing: .4px; }
.state { display: flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--dim); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #666; }
.dot.on { background: var(--ok); box-shadow: 0 0 10px var(--ok); }

.dim { color: var(--dim); }
.small { font-size: 12px; }

/* 卡片 */
.card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--r);
  padding: 22px; backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}
.card h3 { font-size: 15px; font-weight: 600; margin-bottom: 16px; display: flex; align-items: baseline; gap: 8px; }

/* 登录门 */
.gate { display: flex; justify-content: center; padding: 12vh 20px 0; position: relative; z-index: 1; }
.gate-card { width: 360px; max-width: 92vw; text-align: center; padding: 40px 32px; }
.gate-icon { font-size: 40px; margin-bottom: 14px; }
.gate-card h2 { font-size: 20px; margin-bottom: 6px; }
.gate-card p { margin-bottom: 22px; font-size: 13px; }
.gate-card input {
  width: 100%; padding: 13px 16px; border-radius: 12px; font-size: 15px;
  background: rgba(0, 0, 0, 0.3); border: 1px solid var(--card-border); color: var(--text);
  outline: none; transition: border .2s;
}
.gate-card input:focus { border-color: var(--acc); }
.gate-card .btn-primary { width: 100%; margin-top: 14px; }
.err { color: var(--err); font-size: 13px; margin-top: 12px; }

/* 主界面 */
.app { position: relative; z-index: 1; max-width: 1060px; margin: 0 auto; padding: 30px 18px 60px; }
.grid { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 860px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .upload-card { grid-row: span 3; }
}

/* 引擎卡片 */
.engines { display: grid; gap: 12px; }
.engine {
  display: flex; align-items: center; gap: 14px; padding: 15px 16px;
  border-radius: 14px; cursor: pointer; position: relative;
  background: rgba(255, 255, 255, 0.03); border: 1.5px solid rgba(255, 255, 255, 0.09);
  transition: border .18s, background .18s, transform .18s;
}
.engine:hover { transform: translateY(-1px); border-color: rgba(255, 255, 255, 0.22); }
.engine.sel {
  border-color: transparent;
  background: linear-gradient(135deg, rgba(109, 139, 255, 0.16), rgba(158, 109, 255, 0.14));
  box-shadow: 0 0 0 1.5px var(--acc), 0 6px 22px rgba(109, 139, 255, 0.25);
}
.engine .ico { font-size: 26px; width: 42px; height: 42px; display: flex; align-items: center; justify-content: center; background: rgba(255,255,255,.06); border-radius: 11px; }
.engine .nm { font-weight: 600; font-size: 14.5px; display: flex; align-items: center; gap: 7px; }
.engine .ds { font-size: 12px; color: var(--dim); margin-top: 3px; }
.engine .badge {
  font-size: 10.5px; padding: 2px 8px; border-radius: 99px; font-weight: 600;
  background: rgba(109, 139, 255, 0.18); color: #9db1ff;
}
.engine .badge.free { background: rgba(61, 220, 151, 0.14); color: #6fe3b2; }
.engine .badge.warn { background: rgba(255, 178, 85, 0.14); color: #ffcb85; }
.engine .tick { margin-left: auto; font-size: 17px; opacity: 0; color: var(--acc); }
.engine.sel .tick { opacity: 1; }
.engine.off { opacity: .45; cursor: not-allowed; }
.engine.off:hover { transform: none; border-color: rgba(255, 255, 255, 0.09); }

/* 上传 */
.drop {
  border: 1.6px dashed rgba(255, 255, 255, 0.18); border-radius: var(--r);
  padding: 34px 18px; text-align: center; cursor: pointer; transition: .2s;
}
.drop:hover, .drop.over { border-color: var(--acc); background: rgba(109, 139, 255, 0.06); }
.drop-ico { font-size: 34px; margin-bottom: 8px; }
.drop p { font-size: 13.5px; }

.files { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px;
  background: rgba(255, 255, 255, 0.06); border: 1px solid var(--card-border);
  padding: 7px 12px; border-radius: 99px; max-width: 100%;
}
.chip .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 200px; }
.chip .sz { color: var(--dim); font-size: 11px; }
.chip button { background: none; border: none; color: var(--dim); cursor: pointer; font-size: 13px; }
.chip button:hover { color: var(--err); }
.chip.wait { opacity: .55; }

.langs { display: flex; align-items: center; gap: 10px; margin: 18px 0; }
.langs select {
  flex: 1; padding: 11px 13px; border-radius: 12px; font-size: 13.5px;
  background: rgba(0, 0, 0, 0.3); border: 1px solid var(--card-border); color: var(--text); outline: none;
}
.langs select:focus { border-color: var(--acc); }
.swap {
  width: 40px; height: 40px; border-radius: 12px; flex: none;
  background: rgba(255, 255, 255, 0.06); border: 1px solid var(--card-border);
  color: var(--text); font-size: 16px; cursor: pointer; transition: .2s;
}
.swap:hover { border-color: var(--acc); color: var(--acc); }

.btn-primary {
  padding: 13px 20px; border: none; border-radius: 13px; cursor: pointer;
  font-size: 15px; font-weight: 600; color: #fff; font-family: inherit;
  background: linear-gradient(135deg, #5d7bff, #9e6dff);
  transition: transform .15s, box-shadow .15s, opacity .15s;
}
.btn-primary:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 8px 26px rgba(109, 139, 255, 0.4); }
.btn-primary:disabled { opacity: .45; cursor: not-allowed; }
.btn-go { width: 100%; padding: 15px; font-size: 15.5px; }

/* 进度 */
.bar { height: 6px; background: rgba(255, 255, 255, 0.08); border-radius: 99px; overflow: hidden; }
.bar-fill {
  height: 100%; width: 0%; border-radius: 99px;
  background: linear-gradient(90deg, #5d7bff, #9e6dff);
  transition: width .4s ease;
  background-size: 200% 100%; animation: shimmer 1.6s linear infinite;
}
@keyframes shimmer { to { background-position: -200% 0; } }
.step { font-size: 13px; margin: 12px 0 10px; color: #b9c2d8; }
.log {
  background: rgba(0, 0, 0, 0.35); border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px; padding: 12px 14px; font-size: 11.5px; line-height: 1.75;
  max-height: 170px; overflow-y: auto; color: #7f89a0; font-family: ui-monospace, Consolas, monospace;
  white-space: pre-wrap;
}
.log .l-ok { color: var(--ok); }

/* 结果 */
.outputs { display: grid; gap: 12px; }
.out-row {
  display: flex; align-items: center; gap: 12px; padding: 14px 16px;
  background: rgba(255, 255, 255, 0.04); border: 1px solid var(--card-border); border-radius: 14px;
  flex-wrap: wrap;
}
.out-row .ico { font-size: 22px; }
.out-row .tt { flex: 1; min-width: 150px; }
.out-row .tt b { font-size: 13.5px; display: block; }
.out-row .tt span { font-size: 11.5px; color: var(--dim); }
.btn-ghost {
  padding: 9px 16px; border-radius: 10px; cursor: pointer; font-size: 13px; font-family: inherit;
  background: rgba(255, 255, 255, 0.07); border: 1px solid var(--card-border); color: var(--text);
  transition: .15s; text-decoration: none; display: inline-block;
}
.btn-ghost:hover { border-color: var(--acc); color: #cdd8ff; }
.btn-ghost.pri { background: linear-gradient(135deg, rgba(93, 123, 255, .25), rgba(158, 109, 255, .25)); border-color: rgba(109, 139, 255, .5); }

.foot { text-align: center; margin-top: 36px; font-size: 12px; color: var(--dim); }
.foot a { color: #9db1ff; text-decoration: none; }

/* 模态预览 */
.modal {
  position: fixed; inset: 0; z-index: 50; background: rgba(4, 6, 12, 0.8);
  backdrop-filter: blur(8px); display: flex; flex-direction: column; padding: 4vh 4vw;
}
.modal-head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 12px; }
.modal-close {
  background: rgba(255,255,255,.08); border: none; color: #fff; width: 34px; height: 34px;
  border-radius: 10px; cursor: pointer; font-size: 14px;
}
#modalFrame { flex: 1; width: 100%; border: none; border-radius: 14px; background: #fff; }

[hidden] { display: none !important; }