:root{
  --bg: #0b1220;
  --card: rgba(255,255,255,.08);
  --border: rgba(255,255,255,.14);
  --text: #eef2ff;
  --muted: rgba(238,242,255,.75);
  --shadow: 0 24px 70px rgba(0,0,0,.45);
  --primary: #2563eb;
  --primaryHover: #1d4ed8;
  --danger: rgba(239,68,68,.18);
  --dangerBorder: rgba(239,68,68,.35);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans";
  color: var(--text);
  background: var(--bg);
}

.auth{
  min-height:100vh;
  display:grid;
  place-items:center;
  padding: 24px;
  position:relative;
  overflow:hidden;
}

.auth-bg{
  position:absolute;
  inset:-200px;
  background:
    radial-gradient(900px 500px at 20% 20%, rgba(37,99,235,.28), transparent 60%),
    radial-gradient(700px 450px at 80% 30%, rgba(147,51,234,.22), transparent 60%),
    radial-gradient(650px 450px at 50% 90%, rgba(16,185,129,.16), transparent 60%);
  filter: blur(0px);
  opacity: 1;
  pointer-events:none;
}

.auth-card{
  width: min(460px, 92vw);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 26px 26px 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  position:relative;
}

.brand{
  text-align:center;
  margin-bottom: 18px;
}

.brand-logo{
  width: 56px;
  height: 56px;
  object-fit: contain;
  margin-bottom: 10px;
}

.brand-title{
  margin: 0;
  font-size: 22px;
  letter-spacing: .5px;
  font-weight: 800;
}

.brand-subtitle{
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.alert{
  display:flex;
  gap: 12px;
  align-items:flex-start;
  padding: 12px 12px;
  border-radius: 12px;
  margin: 14px 0 14px;
  font-size: 14px;
}

.alert i{ margin-top: 2px; }

.alert-error{
  background: var(--danger);
  border: 1px solid var(--dangerBorder);
}

.form{ margin-top: 8px; }

.field{ margin: 12px 0 14px; }
label{
  display:block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}

.control{
  position:relative;
}

.control i.fa-user,
.control i.fa-lock{
  position:absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(238,242,255,.65);
  font-size: 14px;
}

input{
  width:100%;
  padding: 12px 42px 12px 38px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(15,23,42,.55);
  color: var(--text);
  outline:none;
  transition: border .2s, box-shadow .2s, transform .05s;
}

input::placeholder{ color: rgba(238,242,255,.45); }

input:focus{
  border-color: rgba(37,99,235,.7);
  box-shadow: 0 0 0 4px rgba(37,99,235,.18);
}

.toggle-pass{
  position:absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  border: 0;
  background: transparent;
  color: rgba(238,242,255,.75);
  cursor:pointer;
  padding: 6px 8px;
  border-radius: 10px;
}

.toggle-pass:hover{
  background: rgba(255,255,255,.08);
}

.field-error{
  margin-top: 8px;
  color: rgba(254,202,202,.95);
  font-size: 13px;
}

.row{
  display:flex;
  justify-content: space-between;
  align-items:center;
  gap: 12px;
  margin: 8px 0 16px;
}

.checkbox{
  display:flex;
  gap: 8px;
  align-items:center;
  cursor:pointer;
  color: var(--muted);
  font-size: 13px;
}
.checkbox input{
  width: 16px;
  height: 16px;
  padding: 0;
  margin: 0;
  box-shadow:none;
}

.link{
  color: rgba(191,219,254,.95);
  text-decoration:none;
  font-size: 13px;
}
.link:hover{ text-decoration: underline; }

.btn{
  width: 100%;
  border: 0;
  border-radius: 12px;
  padding: 12px 14px;
  background: var(--primary);
  color: white;
  font-weight: 700;
  cursor:pointer;
  display:flex;
  justify-content:center;
  align-items:center;
  gap: 10px;
  transition: transform .05s, background .2s, box-shadow .2s;
  box-shadow: 0 14px 30px rgba(37,99,235,.25);
}

.btn:hover{ background: var(--primaryHover); }
.btn:active{ transform: translateY(1px); }

.foot{
  text-align:center;
  margin: 14px 0 0;
  font-size: 12px;
}

.muted{ color: var(--muted); }