/* ============================================================
   MANIFEST — auth page. Full-bleed split screen.
   Left: sign-in. Right: a dark, on-brand animated graphic
   (drifting scanlines + a viewport that cycles through verbs).
   Loads mechanical.css first for tokens and fonts.
   ============================================================ */

html,body{height:100%}
body{margin:0;background:#fff}

.auth-shell{display:grid;grid-template-columns:1.05fr 1fr;min-height:100vh}

/* ---- left: sign-in ---- */
.auth-left{display:flex;flex-direction:column;padding:34px clamp(26px,5vw,72px) 30px}
.auth-brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.auth-brand img{width:20px;height:20px}
.auth-brand .word{font-family:var(--font-display);font-weight:700;text-transform:lowercase;letter-spacing:-.02em;font-size:17px}

.auth-main{margin:auto 0;max-width:384px;width:100%}
.auth-main .eyebrow{display:block;margin-bottom:14px}
.auth-main h1{font-family:var(--font-display);font-weight:700;text-transform:none;
  font-size:clamp(32px,3.5vw,48px);letter-spacing:-.045em;line-height:1.06;margin:0;color:var(--ink)}
.auth-main .sub{color:var(--muted);margin:14px 0 30px;font-size:15px;line-height:1.6;max-width:36ch}

.auth-btns{display:grid;gap:12px}
.oauth{display:flex;align-items:center;justify-content:center;gap:11px;font-size:14px;font-weight:600;
  padding:13px 16px;border-radius:4px;border:1px solid transparent;cursor:pointer;
  transition:background .14s,border-color .14s;width:100%;text-align:center}
.oauth svg{width:18px;height:18px;flex:none}
.oauth.github{background:var(--ink);color:#fff}
.oauth.github:hover{background:#23272d}
.oauth.google{background:#fff;border-color:var(--line-2);color:var(--ink);position:relative}
.oauth.google[aria-disabled="true"]{color:var(--faint);cursor:not-allowed;background:#fafafb}
.oauth .soon{position:absolute;right:14px;font-size:10px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--faint);font-weight:600}

.auth-msg{margin-top:14px;font-size:12.5px;color:#b4480c;background:#fff5ec;border:1px solid #f3d9c2;
  border-radius:8px;padding:9px 12px;line-height:1.5}
.auth-msg[hidden]{display:none}

.auth-fine{margin-top:22px;font-size:12.5px;color:var(--faint);line-height:1.6}
.auth-fine a{color:var(--muted);text-decoration:underline;text-underline-offset:2px}
.auth-demo{display:inline-block;margin-top:16px;font-size:13px;font-weight:600;color:var(--accent)}
.auth-demo:hover{color:var(--accent-deep)}
.auth-foot{display:flex;justify-content:space-between;gap:16px;font-size:12.5px;color:var(--faint)}
.auth-foot a{color:var(--muted)}
.auth-foot a:hover{color:var(--ink)}

/* ---- right: animated graphic ---- */
.auth-right{position:relative;overflow:hidden;background:#0b0d11;color:#c9cdd6;isolation:isolate}
.auth-right .glow{position:absolute;left:50%;top:46%;width:560px;height:560px;transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(220,38,38,.19),transparent 62%);filter:blur(8px);z-index:0}
.auth-right .scan{position:absolute;inset:-10% -10%;z-index:1;
  background:repeating-linear-gradient(0deg,rgba(255,255,255,.045) 0,rgba(255,255,255,.045) 2px,transparent 2px,transparent 8px);
  animation:drift 1.1s linear infinite}
@keyframes drift{from{transform:translateY(0)}to{transform:translateY(8px)}}
.auth-right .sweep{position:absolute;left:0;right:0;height:120px;z-index:2;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(220,38,38,.12),transparent);animation:sweep 6s ease-in-out infinite}
@keyframes sweep{0%{top:-15%}100%{top:100%}}

.auth-stage{position:relative;z-index:3;height:100%;display:flex;flex-direction:column;
  align-items:center;justify-content:center;padding:40px;gap:26px}
.viewport{width:min(360px,76%);border:1px solid rgba(255,255,255,.14);border-radius:0;
  background:rgba(13,16,21,.72);backdrop-filter:blur(2px);overflow:hidden;box-shadow:0 24px 60px rgba(0,0,0,.45)}
.viewport .vp-bar{display:flex;align-items:center;gap:8px;padding:11px 13px;border-bottom:1px solid rgba(255,255,255,.08);
  font-size:11.5px;color:#8b909c}
.viewport .vp-bar .d{width:7px;height:7px;border-radius:50%;background:#2fbf71}
.viewport .vp-bar .live{margin-left:auto;font-family:var(--mono);letter-spacing:.1em;text-transform:uppercase;font-size:9.5px;color:#ef6b6b}
.viewport .vp-feed{padding:14px 14px 16px;font-family:var(--mono);font-size:12.5px;line-height:1.5;min-height:148px}
.vp-feed .row{display:flex;gap:9px;align-items:baseline;opacity:0;transform:translateY(3px);
  transition:opacity .35s ease,transform .35s ease;margin:7px 0}
.vp-feed .row.show{opacity:1;transform:none}
.vp-feed .who{color:#6b7180}
.vp-feed .verb{color:#ef7676;font-weight:600}
.vp-feed .obj{color:#d7dae1}
.vp-feed .ok{margin-left:auto;color:#56c98a;font-size:11px}

.auth-tag{text-align:center;z-index:3}
.auth-tag .t{font-family:var(--font-display);font-weight:600;text-transform:none;letter-spacing:-.02em;
  font-size:15px;color:#eef0ff}
.auth-tag .s{margin-top:8px;font-size:12.5px;color:#8b909c}

@media(max-width:860px){
  .auth-shell{grid-template-columns:1fr}
  .auth-right{display:none}
  .auth-left{min-height:100vh}
}
@media(prefers-reduced-motion:reduce){
  .auth-right .scan,.auth-right .sweep{animation:none}
  .vp-feed .row{transition:none}
}