:root{
  --bg:#FFFFFF; --subtle:#F8F8FA; --hover:#F3F4F6;
  --border:#EAEAEE; --border-strong:#D9D9DF;
  --text:#18181B; --text-2:#52525B; --text-3:#8B8B94;
  --accent:#2563EB; --accent-hover:#1D4ED8; --accent-soft:#EFF4FF; --accent-ring:rgba(37,99,235,.18);
  --danger:#DC2626; --danger-soft:#FEF2F2; --success:#16A34A; --success-soft:#ECFDF3;
  --shadow-sm:0 1px 2px rgba(24,24,27,.04);
  --shadow-md:0 8px 24px rgba(24,24,27,.07);
  --shadow-lg:0 24px 64px rgba(24,24,27,.18);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;-webkit-font-smoothing:antialiased}
body.modal-open{overflow:hidden}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-0.015em}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}
[hidden]{display:none!important}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:36px;padding:0 14px;border-radius:8px;border:1px solid transparent;background:transparent;font-size:13.5px;font-weight:500;text-decoration:none;white-space:nowrap;transition:background .15s,border-color .15s,color .15s,opacity .15s}
.btn:disabled{opacity:.6;cursor:not-allowed}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover:not(:disabled){background:var(--accent-hover)}
.btn-secondary{background:#fff;border-color:var(--border-strong);color:var(--text)}
.btn-secondary:hover:not(:disabled){background:var(--hover)}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover:not(:disabled){background:#B91C1C}
.btn-danger-text{color:var(--danger)}
.btn-danger-text:hover:not(:disabled){background:var(--danger-soft)}
.btn-text{color:var(--text-2);padding:0 10px}
.btn-text:hover:not(:disabled){background:var(--hover);color:var(--text)}
.btn-sm{height:32px;padding:0 12px;font-size:13px}
.btn-block{width:100%}
.iconbtn{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:8px;background:transparent;color:var(--text-2);flex-shrink:0}
.iconbtn:hover{background:var(--hover);color:var(--text)}
.spinner{width:16px;height:16px;border-radius:50%;border:2px solid currentColor;border-right-color:transparent;animation:spin .7s linear infinite;flex-shrink:0}
@keyframes spin{to{transform:rotate(360deg)}}

.field{display:flex;flex-direction:column;gap:6px}
.label{font-size:13px;font-weight:500}
.label .opt{color:var(--text-3);font-weight:400}
.input{width:100%;height:40px;padding:0 12px;border:1px solid var(--border-strong);border-radius:8px;background:#fff;font-size:14px;transition:border-color .15s,box-shadow .15s}
.input::placeholder{color:var(--text-3)}
.input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-ring)}
.input:disabled{background:var(--subtle);color:var(--text-2)}
.input.invalid{border-color:var(--danger)}
.input-wrap{position:relative}
.input-wrap .input{padding-right:42px}
.input-wrap .iconbtn{position:absolute;right:4px;top:4px}
.help{font-size:12px;color:var(--text-3)}
.err{font-size:12.5px;color:var(--danger)}
.alert{display:flex;gap:8px;align-items:flex-start;padding:10px 12px;border-radius:8px;font-size:13px}
.alert-error{background:var(--danger-soft);color:#B91C1C}
.alert-success{background:var(--success-soft);color:#15803D}
.alert-info{background:var(--accent-soft);color:#1D4ED8}

.card{background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-sm)}

.modal-overlay{position:fixed;inset:0;z-index:50;display:none;align-items:center;justify-content:center;padding:24px;background:rgba(24,24,27,.36);backdrop-filter:blur(2px)}
.modal-overlay.open{display:flex;animation:fade .15s ease}
.modal{width:460px;max-width:100%;max-height:calc(100vh - 48px);display:flex;flex-direction:column;background:#fff;border-radius:14px;box-shadow:var(--shadow-lg);animation:pop .18s ease}
.modal-sm{width:400px}
.modal-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 24px 0}
.modal-title{font-size:18px}
.modal-body{padding:20px 24px;overflow-y:auto;display:flex;flex-direction:column;gap:16px}
.modal-foot{display:flex;align-items:center;justify-content:flex-end;gap:8px;padding:16px 24px;border-top:1px solid var(--border)}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes pop{from{opacity:0;transform:translateY(8px) scale(.98)}to{opacity:1;transform:none}}

.toast{position:fixed;left:50%;bottom:24px;z-index:100;transform:translate(-50%,16px);opacity:0;pointer-events:none;max-width:calc(100% - 32px);padding:10px 16px;border-radius:10px;background:#18181B;color:#fff;font-size:14px;box-shadow:var(--shadow-lg);transition:opacity .2s,transform .2s}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.error{background:var(--danger)}

@media (max-width:720px){
  .modal-overlay{padding:0;align-items:flex-end}
  .modal,.modal-sm{width:100%;max-height:92vh;border-radius:16px 16px 0 0}
}