:root{
  --ink:#0c1424;--ink-2:#394357;--muted:#525d72;--line:rgba(12,20,36,.075);
  --bg:#f3f5fa;--glass-strong:rgba(255,255,255,.72);
  --accent:#f28a17;--accent-2:#ffb347;--accent-ink:#8a4a06;--rose:#c63a4f;
  --r-lg:22px;--r-pill:999px;
  --shadow:0 1px 1px rgba(12,20,36,.03),0 8px 24px -6px rgba(12,20,36,.08),0 30px 60px -22px rgba(12,20,36,.13);
  --blur:saturate(175%) blur(24px);
  --font:'Plus Jakarta Sans',ui-sans-serif,system-ui,-apple-system,'Segoe UI',sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.55;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit}
button{font-family:inherit;color:inherit}
:focus-visible{outline:2.5px solid var(--accent);outline-offset:3px;border-radius:10px}
[hidden]{display:none!important}

/* ---------- backdrop ---------- */
.ambient{position:fixed;inset:0;z-index:-2;overflow:hidden;background:
  radial-gradient(1200px 700px at 8% -10%,#ffe5c8 0%,rgba(255,229,200,0) 60%),
  radial-gradient(1000px 760px at 100% 4%,#d9e7ff 0%,rgba(217,231,255,0) 60%),
  radial-gradient(900px 800px at 50% 115%,#ebe3ff 0%,rgba(235,227,255,0) 60%),
  linear-gradient(180deg,#f8f9fc 0%,#eef2f9 100%)}
.blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.55}
.blob.a{width:480px;height:480px;left:-120px;top:80px;background:#ffc58a}
.blob.b{width:560px;height:560px;right:-160px;top:-100px;background:#a8c8ff}
.blob.c{width:420px;height:420px;left:40%;top:62%;background:#cbb9ff}
.blueprint{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.7;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 40%,#000 25%,transparent 80%);mask-image:radial-gradient(ellipse 80% 70% at 50% 40%,#000 25%,transparent 80%)}

/* ---------- layout ---------- */
.login{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;padding:32px 16px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;font-size:20px;letter-spacing:-.01em}
.card{width:100%;max-width:420px;padding:36px 32px;text-align:center;background:var(--glass-strong);
  -webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);border:1px solid rgba(255,255,255,.8);border-radius:var(--r-lg);box-shadow:var(--shadow)}
h1{margin:0 0 8px;font-size:26px;line-height:1.2;letter-spacing:-.02em}
.lede{margin:0 0 24px;color:var(--muted)}
.legal{max-width:420px;margin:0;font-size:13px;color:var(--muted);text-align:center}
.legal a{text-decoration:underline;text-underline-offset:2px}

/* ---------- sign-in ---------- */
.gsi-slot{display:flex;justify-content:center;min-height:44px}
.status{margin:12px 0 0;font-size:14px;color:var(--muted)}
.alert{margin:16px 0 0;padding:10px 14px;border-radius:12px;font-size:14px;text-align:left;color:var(--rose);background:rgba(232,86,107,.1);border:1px solid rgba(232,86,107,.3)}
.divider{display:flex;align-items:center;gap:12px;margin:24px 0;font-size:13px;color:var(--muted)}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}

/* ---------- signed in ---------- */
.who{display:flex;align-items:center;gap:14px;margin:20px 0;padding:14px;text-align:left;border-radius:16px;background:rgba(255,255,255,.6);border:1px solid var(--line)}
.who-text{display:flex;flex-direction:column;min-width:0}
.who-text strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.who-text span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;color:var(--muted)}
.avatar{flex:none;width:56px;height:56px;border-radius:50%;object-fit:cover}
.avatar-fallback{display:flex;align-items:center;justify-content:center;font-weight:700;font-size:22px;color:var(--accent-ink);background:linear-gradient(135deg,var(--accent-2),var(--accent))}
.note{margin:0 0 20px;padding:10px 14px;border-radius:12px;font-size:13px;text-align:left;color:var(--ink-2);background:rgba(91,140,240,.1);border:1px solid rgba(91,140,240,.25)}

/* ---------- buttons ---------- */
.btn{display:flex;align-items:center;justify-content:center;width:100%;min-height:46px;margin-top:10px;padding:0 20px;border:1px solid transparent;border-radius:var(--r-pill);font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-primary{color:#fff;background:linear-gradient(135deg,var(--accent-2),var(--accent));box-shadow:0 8px 20px -8px rgba(242,138,23,.6)}
.btn-primary:hover{box-shadow:0 12px 24px -8px rgba(242,138,23,.7)}
.btn-ghost{background:rgba(255,255,255,.55);border-color:var(--line)}
.btn-ghost:hover{background:rgba(255,255,255,.9)}

@media (max-width:480px){.card{padding:28px 20px}}
@media (prefers-reduced-motion:reduce){.btn{transition:none}.btn:hover{transform:none}}