/* ============ 智界AI 登录 / 注册 ============ */
body.auth{min-height:100vh}
.login{display:flex;min-height:100vh}

/* ---------- 左侧品牌 ---------- */
.login-brand{
  position:relative;flex:0 0 44%;max-width:560px;overflow:hidden;color:#fff;
  background:linear-gradient(150deg,#667eea 0%,#764ba2 55%,#5b3a91 100%);
  display:flex;flex-direction:column;justify-content:space-between;padding:52px 48px;
}
.login-brand::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1.4px,transparent 1.4px);
  background-size:26px 26px;-webkit-mask-image:radial-gradient(80% 60% at 30% 20%,#000,transparent 75%);mask-image:radial-gradient(80% 60% at 30% 20%,#000,transparent 75%);opacity:.6;
}
.login-brand .orb{position:absolute;border-radius:50%;filter:blur(2px);opacity:.5;animation:drift 14s var(--ease) infinite}
.login-brand .o1{width:180px;height:180px;background:rgba(255,255,255,.18);top:-40px;right:-40px}
.login-brand .o2{width:120px;height:120px;background:rgba(255,255,255,.14);bottom:120px;left:-30px;animation-delay:3s}
@keyframes drift{0%,100%{transform:translateY(0)}50%{transform:translateY(-22px)}}
.login-brand>*{position:relative;z-index:1}
.login-brand .brand{color:#fff;margin-bottom:34px}
.login-brand .brand .brand__name{color:#fff}
.login-brand h1{color:#fff;font-size:clamp(28px,3vw,40px);line-height:1.2;letter-spacing:-.02em;max-width:360px}
.login-brand h1 span{opacity:.92;font-weight:500}
.login-brand .feat{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.login-brand .feat li{display:flex;align-items:center;gap:12px;font-size:15px;color:rgba(255,255,255,.92);font-weight:500}
.login-brand .feat li svg{width:26px;height:26px;flex:none;padding:6px;border-radius:8px;background:rgba(255,255,255,.16)}

.notice{margin-top:34px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:16px;padding:18px 20px;backdrop-filter:blur(6px)}
.notice__head{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:700;color:#fff;margin-bottom:9px}
.notice__head svg{width:18px;height:18px}
.notice p{font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.85)}
.notice__foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px}
.notice__foot time{font-size:12.5px;color:rgba(255,255,255,.7)}
.btn--notify{background:#fff;color:var(--primary-2);padding:9px 18px;font-size:13.5px;border-radius:999px;font-weight:600;transition:transform .2s,box-shadow .2s}
.btn--notify:hover{transform:translateY(-2px);box-shadow:0 8px 18px -6px rgba(0,0,0,.3)}

/* ---------- 右侧表单 ---------- */
.login-panel{flex:1;display:flex;align-items:center;justify-content:center;padding:48px 32px;background:#fff}
.auth-box{width:100%;max-width:420px}
.auth-box__back{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--ink-3);font-weight:500;margin-bottom:34px;transition:color .2s,gap .2s}
.auth-box__back:hover{color:var(--primary);gap:10px}
.auth-box__back svg{width:16px;height:16px}
.auth-box h2{font-size:30px;letter-spacing:-.02em}
.auth-box .sub{color:var(--ink-3);font-size:15px;margin-top:10px;margin-bottom:30px}

/* 登录/注册切换 */
.ltabs{position:relative;display:grid;grid-template-columns:1fr 1fr;background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:5px;margin-bottom:30px}
.ltabs .ind{position:absolute;top:5px;bottom:5px;left:5px;width:calc(50% - 5px);background:#fff;border-radius:10px;box-shadow:var(--card-shadow);transition:transform .3s var(--ease);z-index:0}
.ltabs[data-mode="register"] .ind{transform:translateX(100%)}
.ltabs button{position:relative;z-index:1;padding:12px;border-radius:10px;font-size:15px;font-weight:600;color:var(--ink-3);transition:color .25s}
.ltabs button.on{color:var(--ink)}
.ltabs button:hover{color:var(--ink-2)}

/* 表单体 */
.form-body{position:relative}
.form-view{display:none}
.form-view.on{display:block;animation:fade .4s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.auth-submit{margin-top:6px}
.auth-submit .btn{position:relative;overflow:hidden}
.auth-submit .spin{display:none;width:18px;height:18px;border:2.4px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.auth-submit.loading .spin{display:inline-block}
.auth-submit.loading .lab,.auth-submit.loading .btn svg{display:none}

/* 分隔 + 微信 */
.divider{display:flex;align-items:center;gap:14px;margin:24px 0;color:var(--ink-3);font-size:13px}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.btn--wechat{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;padding:13px;border:1.5px solid var(--line-2);border-radius:14px;font-size:15px;font-weight:600;color:var(--ink);transition:border-color .2s,background .2s}
.btn--wechat:hover{border-color:#07c160;background:rgba(7,193,96,.05)}
.btn--wechat svg{width:20px;height:20px;color:#07c160}
.auth-switch{margin-top:26px;text-align:center;font-size:14px;color:var(--ink-3)}
.auth-switch a{color:var(--primary);font-weight:600;cursor:pointer}
.terms{font-size:12.5px;color:var(--ink-3);line-height:1.7;margin-top:4px}
.terms a{color:var(--primary);text-decoration:underline;text-underline-offset:2px}

/* 短信验证码按钮 */
.code-btn{
  flex:none;font-size:12.5px;font-weight:600;color:var(--primary);
  border:1px solid var(--grad-line);background:var(--grad-soft);
  padding:8px 13px;border-radius:10px;transition:opacity .2s,background .2s,border-color .2s;white-space:nowrap;
}
.code-btn:hover{background:var(--bg-tint)}
.code-btn:disabled{opacity:.5;cursor:not-allowed;color:var(--ink-3)}

/* 成功态覆盖层 */
.success-ov{
  position:absolute;inset:0;background:#fff;border-radius:var(--r);z-index:5;
  display:none;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:40px 30px;
}
.success-ov.on{display:flex;animation:fade .4s var(--ease)}
.check-pop{width:84px;height:84px;border-radius:50%;background:var(--grad-soft);display:flex;align-items:center;justify-content:center;margin-bottom:22px}
.check-pop svg{width:44px;height:44px}
.check-pop .ring{stroke:var(--green);stroke-width:3;fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:60;stroke-dashoffset:60;animation:draw .6s .1s var(--ease) forwards}
.check-pop .tick{stroke:var(--green);stroke-width:3;fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:30;stroke-dashoffset:30;animation:draw .4s .5s var(--ease) forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.success-ov h3{font-size:22px;margin-bottom:10px}
.success-ov p{color:var(--ink-3);font-size:14.5px;line-height:1.7;max-width:280px}
.success-ov .btn{margin-top:24px}

/* ---- 微信扫码登录 ---- */
.wechat-view{padding-top:4px}
.wx-stage{display:flex;flex-direction:column;align-items:center;gap:14px}
#wxQrArea{display:flex;align-items:center;justify-content:center}
.wx-qr{width:300px;height:400px;border:1px solid var(--line);border-radius:14px;background:#fff}
.wx-mock{width:300px;height:400px;border:1.5px dashed var(--line-2);border-radius:14px;background:var(--bg-tint);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:24px;text-align:center}
.wx-mock__qr{width:72px;height:72px;border-radius:20px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 14px 30px -10px rgba(102,126,234,.55)}
.wx-mock__qr svg{width:38px;height:38px}
.wx-mock p{margin:0;font-size:13px;color:var(--ink-2);line-height:1.8}
.wx-mock .btn{margin-top:2px}
.wx-status{margin:0;min-height:20px;font-size:13.5px;color:var(--ink-2);text-align:center}
.wx-status.err{color:var(--danger)}
.wx-actions{display:flex;gap:18px;align-items:center}
.link-btn{border:none;background:none;padding:0;font-size:13px;color:var(--primary);cursor:pointer;text-decoration:none}
.link-btn:hover{text-decoration:underline}
.wx-bind{margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.wx-bind__tip{margin:0 0 6px;font-size:13px;color:var(--ink-2);line-height:1.7}
.wx-bind__or{margin:14px 0 2px;text-align:center;font-size:12px;color:var(--ink-3)}

/* 响应式 */
@media (max-width:900px){
  .login{flex-direction:column}
  .login-brand{flex:none;max-width:none;padding:36px 28px;min-height:auto}
  .login-brand h1{font-size:26px}
  .login-brand .feat{display:none}
  .notice{display:none}
  .login-panel{padding:36px 20px}
}
@media (max-width:420px){
  .login-panel{padding:28px 16px}
  .auth-box h2{font-size:26px}
  .ltabs button{font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  .login-brand .orb,.bar i,.app .bar i{animation:none}
  .check-pop .ring,.check-pop .tick{animation:none;stroke-dashoffset:0}
}