/* ============================================================
   智达恒通 · 账户系统 v2.0
   ============================================================ */
:root{
  --bg:#08061a;
  --bg-2:#0e0b1f;
  --panel:rgba(15,12,36,.75);
  --border:rgba(168,132,255,.15);
  --border-2:rgba(168,132,255,.3);
  --on:#fff;
  --on-2:rgba(255,255,255,.7);
  --on-3:rgba(255,255,255,.45);
  --accent:#a855f7;
  --accent-2:#ff6b9d;
  --grad:linear-gradient(135deg,#a855f7 0%,#6366f1 50%,#34c8ff 100%);
  --grad-2:linear-gradient(135deg,#a855f7 0%,#ff6b9d 100%);
  --ok:#16a34a;
  --warn:#f59e0b;
  --err:#ef4444;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:'Inter','Noto Sans SC',-apple-system,sans-serif;
  background:var(--bg);color:var(--on);
  -webkit-font-smoothing:antialiased;
  min-height:100vh;position:relative;overflow-x:hidden;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

/* 背景：动态光晕+网格 */
.bg-layer{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bg-layer::before{
  content:'';position:absolute;inset:-50%;
  background:
    radial-gradient(ellipse at 30% 20%,rgba(99,102,241,.16),transparent 45%),
    radial-gradient(ellipse at 70% 60%,rgba(168,85,247,.10),transparent 40%),
    radial-gradient(ellipse at 50% 90%,rgba(255,107,157,.06),transparent 45%);
  animation:bgPulse 14s ease-in-out infinite alternate;
}
.bg-layer::after{
  content:'';position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(168,132,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(168,132,255,.04) 1px,transparent 1px);
  background-size:60px 60px;
  animation:bgGrid 25s linear infinite;
}
@keyframes bgPulse{0%{opacity:.7;transform:scale(1)}100%{opacity:1;transform:scale(1.04)}}
@keyframes bgGrid{0%{background-position:0 0}100%{background-position:60px 60px}}

.particles{position:fixed;inset:0;z-index:1;pointer-events:none}
.particle{position:absolute;border-radius:50%;background:rgba(168,132,255,.4);animation:float 8s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0) scale(1);opacity:.3}50%{transform:translateY(-30px) scale(1.2);opacity:.7}}

/* 主容器 */
.page{position:relative;z-index:2;min-height:100vh;display:flex;flex-direction:column}

/* 顶部 nav */
.topbar{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 28px;
  background:rgba(8,6,26,.6);backdrop-filter:blur(20px) saturate(150%);
  border-bottom:1px solid var(--border);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px}
.brand .logo{
  width:32px;height:32px;border-radius:8px;
  background:var(--grad-2);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;color:#fff;
  box-shadow:0 0 20px rgba(168,85,247,.35);
}
.brand small{color:var(--on-3);font-size:11px;margin-left:-2px}
.topbar .nav-links{display:flex;gap:18px;font-size:13.5px}
.topbar .nav-links a{color:var(--on-2)}
.topbar .nav-links a:hover{color:#fff;text-decoration:none}

/* 主体两栏布局 */
.main{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;padding:60px 28px;max-width:1100px;width:100%;margin:0 auto}
@media(max-width:900px){.main{grid-template-columns:1fr;gap:36px;padding:30px 20px}}

/* 左：品牌宣传 */
.brand-side{text-align:center}
.brand-side .logo-lg{
  width:88px;height:88px;border-radius:22px;
  background:var(--grad-2);
  display:flex;align-items:center;justify-content:center;
  font-size:36px;font-weight:800;color:#fff;margin:0 auto 22px;
  box-shadow:0 0 50px rgba(168,85,247,.4);
}
.brand-side h1{font-size:30px;font-weight:800;line-height:1.2;margin-bottom:8px}
.brand-side h1 span{color:var(--accent)}
.brand-side p{color:var(--on-2);font-size:15px;line-height:1.7;margin-bottom:24px}
.features{display:flex;flex-direction:column;gap:10px;text-align:left;max-width:380px;margin:0 auto}
.feature{
  display:flex;align-items:center;gap:12px;
  padding:12px 16px;border-radius:12px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--border);
  transition:all .2s;
}
.feature:hover{background:rgba(168,85,247,.06);border-color:var(--border-2)}
.feature .ic{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,rgba(168,85,247,.2),rgba(255,107,157,.15));
  display:flex;align-items:center;justify-content:center;font-size:16px;
}
.feature .txt{font-size:13px;color:var(--on-2);line-height:1.5}
.feature .txt strong{color:#fff;display:block;font-size:14px;margin-bottom:2px}

/* 右：表单卡片 */
.form-side{width:100%}
.card{
  background:var(--panel);
  backdrop-filter:blur(24px) saturate(150%);
  border:1px solid var(--border);
  border-radius:24px;padding:38px 36px;
  box-shadow:0 24px 80px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.05);
}
.card .brand-sm{display:flex;align-items:center;gap:10px;margin-bottom:24px}
.card .brand-sm .logo{width:32px;height:32px;border-radius:8px;background:var(--grad-2);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;color:#fff}
.card .brand-sm span{font-size:15px;font-weight:700}
.card .brand-sm small{font-size:11px;color:var(--on-3);margin-left:-4px}

.title{font-size:24px;font-weight:800;margin-bottom:6px}
.sub{font-size:14px;color:var(--on-3);margin-bottom:26px;line-height:1.6}

/* 字段 */
.field{margin-bottom:16px}
.field label{
  display:flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:var(--on-2);
  margin-bottom:6px;letter-spacing:.3px;
}
.field label .req{color:var(--err);font-size:14px}
.field .hint{font-size:11.5px;color:var(--on-3);margin-top:6px;line-height:1.5}
.field input,.field textarea{
  width:100%;padding:13px 15px;
  border-radius:11px;border:1px solid var(--border);
  background:rgba(0,0,0,.3);color:#fff;
  font-size:15px;outline:none;transition:all .2s;
  font-family:inherit;
}
.field input::placeholder{color:rgba(255,255,255,.25)}
.field input:focus,.field textarea:focus{
  border-color:var(--accent);
  background:rgba(0,0,0,.4);
  box-shadow:0 0 0 3px rgba(168,85,247,.12);
}
.field.invalid input{border-color:var(--err);box-shadow:0 0 0 3px rgba(239,68,68,.12)}
.field .err-msg{font-size:12px;color:var(--err);margin-top:5px;display:none}
.field.invalid .err-msg{display:block}

/* 密码强度 */
.pw-meter{height:5px;border-radius:3px;background:rgba(255,255,255,.08);margin-top:8px;overflow:hidden}
.pw-meter > i{display:block;height:100%;width:0;background:var(--err);transition:width .25s, background .25s}
.pw-meter.weak > i{width:33%;background:var(--err)}
.pw-meter.mid  > i{width:66%;background:var(--warn)}
.pw-meter.strong > i{width:100%;background:var(--ok)}
.pw-tips{font-size:11.5px;color:var(--on-3);margin-top:6px;line-height:1.6}
.pw-tips .ok{color:var(--ok)}
.pw-tips .no{color:var(--err)}

/* 按钮 */
.btn{
  width:100%;padding:14px;border:none;border-radius:12px;
  font-size:15px;font-weight:700;cursor:pointer;
  background:var(--grad-2);color:#fff;
  transition:all .25s;font-family:inherit;
  box-shadow:0 4px 18px rgba(168,85,247,.25);
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(168,85,247,.4)}
.btn:active{transform:translateY(0)}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}
.btn.secondary{background:rgba(255,255,255,.06);border:1px solid var(--border);box-shadow:none}
.btn.secondary:hover{background:rgba(255,255,255,.1)}
.btn.danger{background:linear-gradient(135deg,#ef4444,#a855f7);box-shadow:0 4px 18px rgba(239,68,68,.25)}
.btn.danger:hover{box-shadow:0 8px 24px rgba(239,68,68,.4)}

/* 提示信息 */
.alert{
  border-radius:11px;padding:12px 14px;
  font-size:13px;line-height:1.6;margin-bottom:16px;
  display:flex;gap:10px;align-items:flex-start;
}
.alert .ic{flex-shrink:0;font-size:16px;line-height:1.2;margin-top:1px}
.alert.info{background:rgba(99,102,241,.10);border:1px solid rgba(99,102,241,.25);color:#c7d2fe}
.alert.success{background:rgba(22,163,74,.10);border:1px solid rgba(22,163,74,.30);color:#86efac}
.alert.warn{background:rgba(245,158,11,.10);border:1px solid rgba(245,158,11,.30);color:#fcd34d}
.alert.error{background:rgba(239,68,68,.10);border:1px solid rgba(239,68,68,.30);color:#fca5a5}

.switch{margin-top:18px;text-align:center;font-size:13.5px;color:var(--on-3)}
.switch a{font-weight:600}

.foot{text-align:center;padding:20px;color:rgba(255,255,255,.3);font-size:12px}

/* Toast */
#toast-box{position:fixed;top:20px;right:20px;z-index:200;display:flex;flex-direction:column;gap:10px;max-width:380px}
.toast{
  background:rgba(15,12,36,.95);backdrop-filter:blur(20px);
  border:1px solid var(--border);border-radius:12px;
  padding:12px 16px;font-size:13.5px;color:#fff;
  box-shadow:0 8px 32px rgba(0,0,0,.4);
  display:flex;gap:10px;align-items:flex-start;
  animation:toastIn .3s ease;
}
.toast.success{border-left:3px solid var(--ok)}
.toast.error  {border-left:3px solid var(--err)}
.toast.warn   {border-left:3px solid var(--warn)}
.toast.info   {border-left:3px solid var(--accent)}
@keyframes toastIn{from{transform:translateX(40px);opacity:0}to{transform:translateX(0);opacity:1}}
.toast.out{animation:toastOut .3s ease forwards}
@keyframes toastOut{to{transform:translateX(40px);opacity:0}}

/* 单页（无两栏） */
.single{display:flex;align-items:center;justify-content:center;padding:60px 20px;flex:1}
.single .card{max-width:520px;width:100%}

/* Account 页 */
.acct-grid{display:grid;gap:18px}
.kv{display:grid;grid-template-columns:120px 1fr;gap:8px 14px;padding:10px 0;border-bottom:1px solid var(--border);font-size:14px}
.kv .k{color:var(--on-3);font-size:13px}
.kv .v{color:#fff;word-break:break-all}
.tag{display:inline-block;padding:2px 8px;border-radius:6px;font-size:11px;font-weight:600;background:rgba(168,85,247,.15);color:var(--accent)}
.tag.ok{background:rgba(22,163,74,.18);color:#86efac}
.tag.bad{background:rgba(239,68,68,.18);color:#fca5a5}
.kbar{display:flex;gap:10px;align-items:center;margin-top:14px}
.kbar input{flex:1;font-family:var(--mono,monospace);font-size:13px}
.k-list{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.k-item{
  display:flex;align-items:center;gap:12px;
  padding:12px 14px;border:1px solid var(--border);border-radius:12px;
  background:rgba(0,0,0,.2);
}
.k-item .k-info{flex:1;min-width:0}
.k-item .k-name{font-size:14px;font-weight:600;color:#fff;margin-bottom:2px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.k-item .k-prefix{font-family:ui-monospace,monospace;font-size:12.5px;color:var(--on-3)}
.k-item .k-meta{font-size:11.5px;color:var(--on-3);margin-top:2px}
.k-item button{padding:6px 12px;border-radius:8px;font-size:12px;cursor:pointer;background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.3);color:#fca5a5;font-weight:600}
.k-item button:hover{background:rgba(239,68,68,.2)}
.k-item button:disabled{opacity:.4;cursor:not-allowed}
.empty{padding:30px 20px;text-align:center;color:var(--on-3);font-size:13.5px;border:1px dashed var(--border);border-radius:12px}

@media(max-width:480px){
  .topbar{padding:12px 16px}
  .topbar .nav-links{display:none}
  .card{padding:30px 24px}
  .brand-side .logo-lg{width:72px;height:72px;font-size:28px}
  .brand-side h1{font-size:24px}
}