/* ============ TOKENS ============ */
:root{
  --bg:#F6F7F9;
  --surface:#FFFFFF;
  --surface-2:#FBFCFD;
  --surface-3:#F2F4F8;
  --ink:#111318;
  --ink-2:#48505F;
  --ink-3:#767E90;
  --ink-4:#9AA1B1;
  --line:#E5E8EF;
  --line-2:#EFF1F6;
  --brand:#3155F5;
  --brand-600:#2645D8;
  --brand-050:#F2F5FF;
  --brand-100:#E6ECFF;
  --brand-200:#CBD8FE;
  --ok:#0E9F6E;
  --ok-bg:#E9F8F1;
  --warn:#C97B14;
  --warn-bg:#FDF4E5;
  --danger:#D93A3A;
  --danger-bg:#FDEDED;
  --r-xs:6px; --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:22px;
  --sh-1:0 1px 2px rgba(16,24,40,.05), 0 1px 3px rgba(16,24,40,.04);
  --sh-2:0 6px 20px -6px rgba(16,24,40,.12), 0 2px 6px rgba(16,24,40,.05);
  --sh-3:0 24px 60px -18px rgba(16,24,40,.28), 0 8px 20px -8px rgba(16,24,40,.12);
  --font:"Inter","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --content-size:14.5px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;font-family:var(--font);background:var(--bg);color:var(--ink);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
button{font-family:inherit}
input,textarea{font-family:inherit}
a{color:inherit;text-decoration:none}
::selection{background:var(--brand-200);color:#0B1A4D}
.icon{width:16px;height:16px;flex:0 0 auto;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.icon.sm{width:14px;height:14px}
.icon.lg{width:20px;height:20px}
.hidden{display:none !important}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.01em}

/* scrollbar */
.scroll{overflow-y:auto;scrollbar-width:thin;scrollbar-color:#D9DEE8 transparent}
.scroll::-webkit-scrollbar{width:10px;height:10px}
.scroll::-webkit-scrollbar-thumb{background:#DDE2EC;border-radius:99px;border:3px solid transparent;background-clip:content-box}
.scroll::-webkit-scrollbar-thumb:hover{background:#C7CEDB;background-clip:content-box}
.scroll::-webkit-scrollbar-track{background:transparent}

/* ============ AUTH ============ */
.auth{display:grid;grid-template-columns:1.05fr .95fr;min-height:100vh;background:var(--surface)}
.auth-brand{
  position:relative;overflow:hidden;padding:44px 52px;display:flex;flex-direction:column;justify-content:space-between;
  background:linear-gradient(158deg,#0A0E1E 0%,#111A3E 46%,#0C1430 100%);color:#fff;
}
.brand-grid{
  position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(120% 80% at 20% 0%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(120% 80% at 20% 0%,#000 0%,transparent 72%);
}
.brand-glow{position:absolute;border-radius:50%;filter:blur(10px);pointer-events:none}
.brand-glow.a{width:560px;height:560px;left:-140px;top:-180px;background:radial-gradient(circle,rgba(64,102,255,.55),transparent 62%)}
.brand-glow.b{width:520px;height:520px;right:-180px;bottom:-220px;background:radial-gradient(circle,rgba(122,86,255,.4),transparent 64%)}
.brand-top{position:relative;display:flex;align-items:center;gap:10px;z-index:2}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:#fff;
  background:linear-gradient(150deg,#4F7BFF,#2C3ED6 62%,#6D3BF0);
  box-shadow:0 8px 20px -6px rgba(61,97,255,.7), inset 0 1px 0 rgba(255,255,255,.32);
}
.logo-mark .icon{width:18px;height:18px;stroke-width:2}
.logo-name{font-size:16px;font-weight:650;letter-spacing:.02em}
.logo-tag{font-size:11px;color:rgba(255,255,255,.5);border:1px solid rgba(255,255,255,.16);padding:2px 7px;border-radius:99px;margin-left:2px}
/* brand assets */
.brand-top{flex-direction:column;align-items:flex-start;gap:11px}
.brand-logo{display:block;width:150px;max-width:100%;height:auto;flex:0 0 auto;object-fit:contain;object-position:left center;}
.brand-lockup-sub{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;color:rgba(255,255,255,.5);letter-spacing:.04em}
.brand-lockup-sub .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.35)}
.mark-img{display:block;width:16px;height:18px;background-image:url(/img/headway/mark.png);background-size:contain;background-repeat:no-repeat;background-position:center;}
.logo-mark .mark-img{display:block;width:16px;height:18px;background-image:url(/img/headway/mark.png);background-size:contain;background-repeat:no-repeat;background-position:center;}
.msg-av.ai .mark-img{display:block;width:16px;height:18px;background-image:url(/img/headway/mark.png);background-size:contain;background-repeat:no-repeat;background-position:center;}
.empty-mark .mark-img{display:block;width:16px;height:18px;background-image:url(/img/headway/mark.png);background-size:contain;background-repeat:no-repeat;background-position:center;}
.brand-copy{position:relative;z-index:2;max-width:470px;order:1}
.brand-copy h1{font-size:35px;line-height:1.32;letter-spacing:-.025em;margin:0 0 16px;font-weight:650}
.brand-copy h1 em{
  font-style:normal;
  background:linear-gradient(96deg,#A9BCFF 0%,#CBB6FF 52%,#86D6FF 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.brand-copy p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.6);margin:0 0 26px;max-width:420px}
.brand-points{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.brand-points li{display:flex;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.82)}
.brand-points .tick{width:20px;height:20px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14)}
.brand-points .tick .icon{width:11px;height:11px;stroke-width:2.6;color:#9FB4FF}
.brand-preview{position:relative;z-index:2;margin:0;order:2}
.mini-card{
  width:100%;max-width:400px;border-radius:16px;padding:16px 18px;
  background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.13);
  backdrop-filter:blur(14px);
  box-shadow:0 24px 50px -22px rgba(0,0,0,.7);
}
.mini-head{display:flex;align-items:center;gap:8px;font-size:11.5px;color:rgba(255,255,255,.55);margin-bottom:12px;letter-spacing:.02em}
.mini-dot{width:6px;height:6px;border-radius:50%;background:#5DE3A8;box-shadow:0 0 0 3px rgba(93,227,168,.16)}
.mini-line{height:8px;border-radius:99px;background:rgba(255,255,255,.14);margin-bottom:9px}
.mini-line.w90{width:92%}.mini-line.w70{width:68%}.mini-line.w45{width:44%}
.mini-line.live{background:linear-gradient(90deg,rgba(122,152,255,.9),rgba(255,255,255,.16))}
.mini-tool{
  display:inline-flex;align-items:center;gap:7px;margin:4px 0 12px;padding:5px 10px;border-radius:99px;
  background:rgba(93,227,168,.1);border:1px solid rgba(93,227,168,.26);color:#8DF3C4;font-size:11.5px;
}
.mini-tool .icon{width:12px;height:12px;stroke-width:2.4}
.brand-foot{position:relative;z-index:2;font-size:11.5px;color:rgba(255,255,255,.36);letter-spacing:.03em;order:3}

.auth-form-side{display:flex;align-items:center;justify-content:center;padding:40px 32px}
.auth-form{width:100%;max-width:376px}
.form-head{margin-bottom:26px}
.form-head h2{font-size:24px;letter-spacing:-.02em;margin:0 0 8px;font-weight:650}
.form-head p{font-size:13.5px;color:var(--ink-3);margin:0}
.field{display:block;margin-bottom:15px}
.field-label{display:block;font-size:12.5px;font-weight:550;color:var(--ink-2);margin-bottom:7px}
.input-wrap{
  display:flex;align-items:center;gap:9px;height:44px;padding:0 12px;border-radius:10px;
  border:1px solid var(--line);background:var(--surface);transition:border-color .16s,box-shadow .16s;
}
.input-wrap:focus-within{border-color:#B9C7FA;box-shadow:0 0 0 4px rgba(49,85,245,.08)}
.input-wrap .icon{color:var(--ink-4)}
.input-wrap input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink);height:100%;padding:0}
.input-wrap input::placeholder{color:var(--ink-4)}
.input-wrap.err{border-color:#F0B4B4;box-shadow:0 0 0 4px rgba(217,58,58,.07)}
.pw-toggle{border:0;background:transparent;padding:2px;cursor:pointer;color:var(--ink-4);display:grid;place-items:center;border-radius:6px}
.pw-toggle:hover{color:var(--ink-2);background:var(--surface-3)}
.code-btn{
  border:0;background:var(--brand-050);color:var(--brand);font-size:12.5px;font-weight:600;
  height:30px;padding:0 11px;border-radius:7px;cursor:pointer;white-space:nowrap;transition:.15s;
}
.code-btn:hover{background:var(--brand-100)}
.code-btn:disabled{color:var(--ink-4);background:var(--surface-3);cursor:not-allowed}
.field-row{display:flex;align-items:center;justify-content:space-between;margin:4px 0 18px}
.check{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--ink-2);cursor:pointer;user-select:none}
.check input{width:15px;height:15px;accent-color:var(--brand);cursor:pointer;margin:0}
.link{font-size:12.5px;color:var(--brand);font-weight:500}
.link:hover{text-decoration:underline}
.link-strong{color:var(--brand);font-weight:600}
.link-strong:hover{text-decoration:underline}
.form-error{
  display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--danger);
  background:var(--danger-bg);border:1px solid #F7D4D4;border-radius:8px;padding:9px 11px;margin-bottom:12px;
}
.form-error .icon{width:14px;height:14px}
.btn-primary{
  width:100%;height:44px;border:0;border-radius:10px;cursor:pointer;color:#fff;font-size:14px;font-weight:600;
  background:var(--brand);box-shadow:0 8px 18px -8px rgba(49,85,245,.6);transition:.16s;
  display:flex;align-items:center;justify-content:center;gap:8px;
}
.btn-primary:hover{background:var(--brand-600);box-shadow:0 10px 22px -8px rgba(49,85,245,.7)}
.btn-primary:active{transform:translateY(.5px)}
.btn-primary[disabled]{opacity:.65;cursor:default;box-shadow:none}
.divider{display:flex;align-items:center;gap:12px;margin:20px 0 16px;color:var(--ink-4);font-size:11.5px}
.divider::before,.divider::after{content:"";height:1px;flex:1;background:var(--line)}
.sso-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn-ghost{
  height:40px;border:1px solid var(--line);background:var(--surface);border-radius:10px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;gap:7px;font-size:13px;color:var(--ink-2);transition:.15s;
}
.btn-ghost:hover{background:var(--surface-2);border-color:#D5DAE6;color:var(--ink)}
.btn-ghost.is-denied{animation:ssoDeny .42s var(--ease);border-color:#F0C9A8;color:#B4703C;background:#FFF8F2}
@keyframes ssoDeny{0%,100%{transform:translateX(0)}22%{transform:translateX(-4px)}46%{transform:translateX(4px)}70%{transform:translateX(-2px)}}
[data-theme="dark"] .btn-ghost.is-denied{background:#2A2118;border-color:#5B4326;color:#E5A86A}
.btn-ghost .icon{width:15px;height:15px}
.auth-alt{text-align:center;font-size:13px;color:var(--ink-3);margin:22px 0 0}
.demo-hint{text-align:center;font-size:11.5px;color:var(--ink-4);margin:14px 0 0;padding-top:14px;border-top:1px dashed var(--line)}
.strength{display:flex;gap:5px;margin-top:8px}
.strength i{height:3px;flex:1;border-radius:99px;background:var(--line);transition:.2s}
.strength.lv1 i:nth-child(1){background:#E4593F}
.strength.lv2 i:nth-child(-n+2){background:#E0A32B}
.strength.lv3 i:nth-child(-n+3){background:#0E9F6E}
.strength-txt{font-size:11.5px;color:var(--ink-4);margin-top:6px}


/* —— RuoYi 登录页补充 —— */
.code-img{display:block;height:36px;width:auto;min-width:96px;max-height:36px;border-radius:7px;cursor:pointer;border:1px solid var(--line);background:#fff;flex:0 0 auto;flex-shrink:0;object-fit:contain}
.input-wrap.code input{flex:1;min-width:0}
.form-error .icon{flex:0 0 auto}
.forgot-tip{font-size:12px;color:var(--ink-3);background:var(--surface-3);border-radius:8px;padding:8px 11px;margin:-6px 0 14px}
.btn-primary .spin{width:15px;height:15px;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@media (max-width:1000px){
  .auth{grid-template-columns:1fr}
  .auth-brand{display:none}
}

label.error { position: inherit; color: var(--danger); font-size: 12px; margin-top: 6px; display: block; }

/* SVG sprite fallback */
body > svg[aria-hidden="true"] { position: absolute; width: 0; height: 0; overflow: hidden; pointer-events: none; }
svg.icon { display: inline-block; width: 16px; height: 16px; max-width: 16px; max-height: 16px; flex-shrink: 0; overflow: hidden; }
svg.icon.sm { width: 14px; height: 14px; max-width: 14px; max-height: 14px; }
svg.icon.lg { width: 20px; height: 20px; max-width: 20px; max-height: 20px; }
.brand-points .tick svg.icon { width: 11px; height: 11px; max-width: 11px; max-height: 11px; }
.mini-tool svg.icon { width: 12px; height: 12px; max-width: 12px; max-height: 12px; }
.input-wrap svg.icon { width: 16px; height: 16px; max-width: 16px; max-height: 16px; }
.pw-toggle svg.icon { width: 16px; height: 16px; max-width: 16px; max-height: 16px; }