:root{
  --primary:#0b617e;
  --secondary:#054369;
  --bg:#0b1220;
  --card:#0f172a;
  --card2:#0b1020;
  --text:#e5e7eb;
  --muted:#94a3b8;
  --border:rgba(148,163,184,.18);
  --shadow: 0 18px 55px rgba(0,0,0,.45);
  --radius: 18px;
  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Arial;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  background:
    radial-gradient(900px 600px at 15% 10%, rgba(11,97,126,.45), transparent 60%),
    radial-gradient(900px 600px at 85% 35%, rgba(5,67,105,.50), transparent 55%),
    radial-gradient(600px 400px at 70% 90%, rgba(11,97,126,.30), transparent 55%),
    var(--bg);
}

/* layout */
.auth-wrap{
  min-height:100%;
  display:grid;
  place-items:center;
  padding:20px;
}

.auth-shell{
  width:min(980px, 100%);
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  border-radius: 28px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.10);
  box-shadow: var(--shadow);
  background: rgba(255,255,255,.03);
  backdrop-filter: blur(10px);
}

@media (max-width: 880px){
  .auth-shell{ grid-template-columns: 1fr; }
}

/* left panel */
.auth-left{
  position:relative;
  padding:42px 44px;
  background:
    linear-gradient(135deg, rgba(11,97,126,.20), rgba(5,67,105,.22)),
    radial-gradient(700px 420px at 10% 20%, rgba(11,97,126,.35), transparent 60%),
    radial-gradient(700px 420px at 90% 30%, rgba(5,67,105,.38), transparent 55%);
}

.auth-left::after{
  content:"";
  position:absolute;
  inset:-2px;
  background:
    radial-gradient(500px 250px at 20% 15%, rgba(255,255,255,.12), transparent 55%),
    radial-gradient(500px 250px at 80% 35%, rgba(255,255,255,.10), transparent 55%);
  pointer-events:none;
}

.brand{
  position:relative;
  display:flex;
  align-items:center;
  gap:14px;
  z-index:1;
}

.brand img{
  width:84px;
  height:84px;
  object-fit:contain;
  border-radius:14px;
  background: rgba(255,255,255,.08);
  padding:8px;
  border:1px solid rgba(255,255,255,.12);
}

.brand h1{
  margin:0;
  font-size:24px;
  letter-spacing:-.02em;
}

.brand p{
  margin:3px 0 0 0;
  color:var(--muted);
  font-size:13px;
  line-height:1.35;
}

.hero{
  position:relative;
  z-index:1;
  margin-top:38px;
}

.hero h2{
  margin:0;
  font-size:34px;
  letter-spacing:-.03em;
  line-height:1.05;
}

.hero span{
  display:block;
  color: rgba(229,231,235,.88);
  font-size:14px;
  margin-top:10px;
  line-height:1.55;
  max-width: 46ch;
}

.badges{
  position:relative;
  z-index:1;
  margin-top:22px;
  display:grid;
  gap:10px;
}

.badge{
  padding:12px 14px;
  border-radius: 16px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.16);
  color: rgba(229,231,235,.92);
  font-size:13px;
  line-height:1.4;
}

@media (max-width: 880px){
  .auth-left{ padding:32px 22px; }
  .hero h2{ font-size:28px; }
}

/* right panel (form) */
.auth-right{
  padding:42px 44px;
  background:
    linear-gradient(180deg, rgba(15,23,42,.88), rgba(11,16,32,.92));
}

@media (max-width: 880px){
  .auth-right{ padding:26px 22px; }
}

.form-title{
  margin:0;
  font-size:20px;
  letter-spacing:-.02em;
}
.form-subtitle{
  margin:6px 0 0 0;
  color: var(--muted);
  font-size:13px;
  line-height:1.45;
}

.form{
  margin-top:18px;
  display:grid;
  gap:12px;
}

.label{
  color: var(--muted);
  font-size:12px;
  margin-bottom:6px;
  display:block;
}

.input{
  width:100%;
  padding:13px 14px;
  border-radius: 16px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  outline:none;
  font-size:16px; /* evita zoom no iPhone */
}

.input::placeholder{ color: rgba(148,163,184,.70); }

.input:focus{
  border-color: rgba(11,97,126,.55);
  box-shadow: 0 0 0 4px rgba(11,97,126,.18);
}

.actions{
  margin-top:8px;
  display:grid;
  gap:10px;
}

.btn{
  border:0;
  border-radius: 16px;
  padding:13px 14px;
  cursor:pointer;
  font-weight:800;
  font-size:15px;
  transition: transform .05s ease, opacity .15s ease, box-shadow .15s ease;
}

.btn:active{ transform: translateY(1px); }

.btn-primary{
  color:#fff;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 12px 20px rgba(11,97,126,.20);
}

.btn-primary:hover{ opacity:.98; }

.btn-ghost{
  background: transparent;
  border: 1px solid rgba(255,255,255,.14);
  color: rgba(229,231,235,.92);
  font-weight:800;
}

.btn-ghost:hover{ background: rgba(255,255,255,.05); }

.alert{
  border-radius:16px;
  padding:12px 14px;
  border:1px solid rgba(220,38,38,.35);
  background: rgba(220,38,38,.10);
  color: #fecaca;
  font-size:13px;
  line-height:1.35;
}

.footer{
  margin-top:14px;
  color: rgba(148,163,184,.75);
  font-size:12px;
}