:root {
  --bg: #0d0d0d;      /* fundo principal */
  --fg: #f2f2f2;      /* texto */
  --muted: #cfcfcf;   /* texto secundário */
  --brand: #ffcc00;   /* primária */
  --brand-600: #e6b800; /* hover/active */
  --accent: #206696;  /* secundária */
  --card: #161616;    /* blocos */
  --border: #262626;  /* bordas sutis */
  --error: #e53935;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 20% 10%, #101010 0%, #0b0b0b 60%), var(--bg);
  color: var(--fg);
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 420px;
  background: linear-gradient(180deg, rgba(38,102,150,0.07), rgba(38,102,150,0));
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.45);
}

.brand { text-align: center; margin-bottom: 22px; }
.brand__logo {
  height: 54px; width: auto; display: inline-block;
  filter: drop-shadow(0 8px 16px rgba(0,0,0,0.35));
  margin-bottom: 10px;
}
.brand__title { font-size: 1.25rem; font-weight: 600; letter-spacing: .2px; color: var(--muted); }

.form { display: grid; gap: 14px; }
.field { display: grid; gap: 6px; }
.field--row { display: flex; align-items: center; justify-content: space-between; }
label { font-size: .9rem; color: var(--muted); }

input[type="text"], input[type="password"] {
  background: #111;
  border: 1px solid var(--border);
  color: var(--fg);
  border-radius: 10px;
  padding: 12px 14px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  width: 100%;
}
input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(32,102,150,.25);
}

/* botão olho */
.password-wrap { position: relative; }
.btn-eye {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--border);
  background: #151515; cursor: pointer;
}
.btn-eye:hover { border-color: var(--accent); }

.checkbox { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; color: var(--muted); }
.link { color: var(--accent); text-decoration: none; font-size: .9rem; }
.link:hover { text-decoration: underline; }

.btn {
  appearance: none; border: none; cursor: pointer; font-weight: 700; letter-spacing: .3px;
  padding: 12px 16px; border-radius: 12px; width: 100%;
}
.btn--primary { background: var(--brand); color: #111; box-shadow: 0 8px 20px rgba(255,204,0,0.2); }
.btn--primary:hover { background: var(--brand-600); }

.alert {
  border: 1px solid var(--error); color: #ffd7d7; background: rgba(229,57,53,.08);
  border-radius: 10px; padding: 10px 12px; margin-bottom: 12px; font-size: .92rem;
}

.legal { margin-top: 16px; text-align: center; color: #9a9a9a; font-size: .85rem; }