:root{
  --bg1: 255 255 255;
  --fg1: 17 24 39;          /* near-slate-900 */
  --muted: 107 114 128;     /* slate-500 */
  --brand: 99 102 241;      /* indigo-500 */
  --brand-600: 79 70 229;   /* indigo-600 */
  --card: 255 255 255;
  --border: 229 231 235;    /* gray-200 */
  --danger: 239 68 68;      /* red-500 */
  --ring: 59 130 246;       /* blue-500 */
  --shadow: 0 10px 30px rgba(2, 6, 23, .08);
}

@media (prefers-color-scheme: dark){
  :root{
    --bg1: 2 6 23;          /* slate-950 */
    --fg1: 241 245 249;     /* slate-100 */
    --muted: 148 163 184;   /* slate-400 */
    --card: 15 23 42;       /* slate-900 */
    --border: 30 41 59;     /* slate-800 */
    --shadow: 0 10px 40px rgba(0,0,0,.6);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body.auth{
  margin: 0;
  color: rgb(var(--fg1));
  background:
    radial-gradient(1200px 600px at 10% 10%, rgba(99,102,241,.12), transparent 60%),
    radial-gradient(900px 500px at 90% 90%, rgba(79,70,229,.10), transparent 60%),
    rgb(var(--bg1));
  font: 16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, Inter, "Helvetica Neue", Arial, "Apple Color Emoji","Segoe UI Emoji";
}

.auth__wrap{
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth__card{
  width: 100%;
  max-width: 420px;
  background: rgb(var(--card));
  border: 1px solid rgb(var(--border));
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 28px;
  animation: pop .25s ease-out;
}

@keyframes pop {
  from { transform: translateY(6px); opacity: .0; }
  to   { transform: translateY(0); opacity: 1; }
}

.auth__header{
  text-align: left;
  margin-bottom: 20px;
}

.auth__logo{
  height: 36px; width: auto; display: block; margin-bottom: 12px;
}

.auth__title{
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.auth__subtitle{
  margin: 6px 0 0;
  color: rgb(var(--muted));
  font-size: .95rem;
}

.auth__alert{
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(var(--danger), .10);
  border: 1px solid rgba(var(--danger), .35);
  color: rgb(var(--danger));
  padding: 10px 12px;
  border-radius: 10px;
  margin: 10px 0 18px;
  font-size: .95rem;
}
.auth__alert-dot{
  width: 8px; height: 8px; border-radius: 99px;
  background: rgb(var(--danger));
  margin-top: 6px;
}

.auth__form{ display: grid; gap: 14px; }

.field{ display: grid; gap: 8px; }
.label{
  font-weight: 600;
  font-size: .95rem;
}
.input{
  appearance: none;
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid rgb(var(--border));
  background: transparent;
  color: inherit;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.input::placeholder{ color: rgba(var(--muted), .8); }
.input:focus{
  border-color: rgba(var(--ring), .8);
  box-shadow: 0 0 0 4px rgba(var(--ring), .15);
}

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

.checkbox{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  user-select: none;
  cursor: pointer;
  font-size: .95rem;
  color: rgb(var(--muted));
}
.checkbox input{ accent-color: rgb(var(--brand)); }

.link{
  text-decoration: none;
  font-weight: 600;
  color: rgb(var(--brand));
}
.link:hover{ color: rgb(var(--brand-600)); text-decoration: underline; }

.btn{
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: rgb(var(--brand));
  color: white;
  font-weight: 700;
  letter-spacing: .01em;
  cursor: pointer;
  transition: transform .02s ease, background .15s ease, box-shadow .15s ease;
}
.btn:hover{ background: rgb(var(--brand-600)); }
.btn:active{ transform: translateY(1px); }

.auth__footer{
  margin-top: 14px;
  text-align: center;
}
.muted{ color: rgb(var(--muted)); font-size: .85rem; }