/* ================= TGM Messenger — auth ================= */
:root, [data-theme="dark"]{
  --bg:#0D0E10; --surface:#15171A; --raise:#22262B;
  --line:rgba(255,255,255,.07); --line-strong:rgba(255,255,255,.12);
  --ink:#F0F1F3; --ink-2:#A8ADB5; --ink-3:#71767E;
  --accent:#C9575B; --accent-ink:#fff; --accent-soft:rgba(201,87,91,.13);
  --ok:#35C08A; --err:#E5484D;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 24px 60px -20px rgba(0,0,0,.7);
  --glow:rgba(201,87,91,.16);
}
[data-theme="light"]{
  --bg:#F4F5F7; --surface:#FFFFFF; --raise:#F0F1F4;
  --line:#E6E8EC; --line-strong:#D6D9DF;
  --ink:#17191C; --ink-2:#5B6068; --ink-3:#898F98;
  --accent:#A8383D; --accent-ink:#fff; --accent-soft:rgba(168,56,61,.07);
  --ok:#12A971; --err:#DC2B2B;
  --shadow:0 1px 2px rgba(23,25,28,.05),0 24px 60px -24px rgba(23,25,28,.28);
  --glow:rgba(168,56,61,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Geist","Inter",system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--ink);
  min-height:100vh;overflow:hidden;position:relative;-webkit-font-smoothing:antialiased;letter-spacing:-.01em}

/* soft accent glow instead of the old aurora */
.aurora{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.b1{width:42vw;height:42vw;background:var(--glow);top:-12%;left:-8%}
.b2{width:36vw;height:36vw;background:var(--glow);bottom:-16%;right:-8%}
.b3{display:none}

.auth-wrap{position:relative;z-index:1;min-height:100vh;display:grid;place-items:center;padding:24px}
.auth-card{width:100%;max-width:410px;background:var(--surface);border:1px solid var(--line-strong);
  border-radius:18px;padding:34px 32px;box-shadow:var(--shadow)}
.auth-card.wide{max-width:470px}
.reveal{animation:rise .5s cubic-bezier(.22,.9,.28,1) both}
@keyframes rise{from{opacity:0;transform:translateY(14px) scale(.99)}to{opacity:1;transform:none}}

.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:16px;margin-bottom:24px;letter-spacing:-.02em}
.logo-badge{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;font-size:13px;font-weight:700;
  background:var(--accent);color:var(--accent-ink)}

h1{font-size:23px;font-weight:600;letter-spacing:-.03em}
.sub{color:var(--ink-3);margin:8px 0 24px;font-size:14px}

.auth-form{display:flex;flex-direction:column;gap:14px}
.row{display:flex;gap:12px}.row .field{flex:1}
.field{display:flex;flex-direction:column;gap:7px;position:relative}
.field.hidden{display:none}
.field span{font-size:12.5px;color:var(--ink-2);font-weight:500}
.field input{background:var(--raise);border:1px solid var(--line);color:var(--ink);
  padding:12px 14px;border-radius:10px;font-size:14.5px;font-family:inherit}
.field input::placeholder{color:var(--ink-3)}
.field input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}

.btn-primary{margin-top:6px;display:flex;align-items:center;justify-content:center;gap:9px;
  background:var(--accent);color:var(--accent-ink);border:none;padding:13px;border-radius:10px;
  font-size:14.5px;font-weight:500;cursor:pointer}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 8px 20px -8px var(--accent)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-primary .arrow{transition:transform .22s;font-style:normal}
.btn-primary:hover .arrow{transform:translateX(4px)}

.switch{margin-top:20px;text-align:center;color:var(--ink-3);font-size:13.5px}
.switch a{color:var(--accent);text-decoration:none;font-weight:500}
.switch a:hover{text-decoration:underline}

/* segmented toggle */
.seg{position:relative;display:flex;background:var(--raise);border-radius:11px;padding:4px;margin-bottom:22px}
.seg-btn{flex:1;z-index:1;background:none;border:none;color:var(--ink-3);font-weight:500;
  font-size:13px;padding:9px;border-radius:8px;cursor:pointer;font-family:inherit}
.seg-btn.active{color:var(--ink)}
.seg-pill{position:absolute;top:4px;left:4px;width:calc(50% - 4px);height:calc(100% - 8px);
  border-radius:8px;background:var(--surface);box-shadow:0 1px 2px rgba(0,0,0,.18);
  transition:transform .3s cubic-bezier(.22,.9,.28,1)}
.seg.join .seg-pill{transform:translateX(100%)}

/* flash toasts */
.toast-stack{position:fixed;top:22px;left:50%;transform:translateX(-50%);z-index:50;display:flex;flex-direction:column;gap:10px}
.flash{padding:12px 18px;border-radius:10px;font-size:13.5px;font-weight:500;background:var(--surface);
  border:1px solid var(--line-strong);box-shadow:var(--shadow);animation:drop .4s cubic-bezier(.22,.9,.28,1) both}
.flash.error{border-color:rgba(229,72,77,.4);color:var(--err)}
.flash.success{border-color:rgba(53,192,138,.4);color:var(--ok)}
@keyframes drop{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:none}}

@media (prefers-reduced-motion: reduce){*{animation:none!important;transition:none!important}}