:root{
  --bg: #f4f9ff;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #6b7280;
  --brand: #1976d2;
  --brand2:#22c55e;
  --danger:#e11d48;
  --ring:#93c5fd;
  --shadow: 0 8px 24px rgba(16,24,40,.08);
}

@media (prefers-color-scheme: dark) {
  :root{
    --bg: #0b1020;
    --card:#111827;
    --text:#e5e7eb;
    --muted:#9ca3af;
    --brand:#60a5fa;
    --brand2:#34d399;
    --ring:#1d4ed8;
    --shadow: 0 8px 24px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.page{
  min-height: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
  align-items: start;
}

/* soft abstract background */
.bg{
  position: fixed; inset: -20vmax;
  pointer-events: none;
  background:
    radial-gradient(40vmax 40vmax at 10% 10%, rgba(33,150,243,.10), transparent 60%),
    radial-gradient(40vmax 40vmax at 90% 20%, rgba(34,197,94,.12), transparent 60%),
    radial-gradient(36vmax 36vmax at 30% 90%, rgba(99,102,241,.10), transparent 60%);
  filter: blur(24px);
  z-index: 0;
}

.brand{
  z-index: 1;
  padding: max(14px, env(safe-area-inset-top)) 20px 6px;
  display: flex; align-items: center; gap: 12px;
  justify-content: center;
  text-align: center;
}
.brand .logo{
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  display: grid; place-items: center;
  box-shadow: var(--shadow);
}
.brand .logo svg{
  width: 26px; height: 26px; fill: #fff;
}
.brand .heading h1{
  margin: 0; font-size: clamp(18px, 3.6vw, 22px); font-weight: 700;
}
.muted{ color: var(--muted); }

.card{
  background: var(--card);
  border-radius: 16px;
  margin: 18px auto;
  width: min(520px, 92vw);
  padding: 20px 18px 22px;
  box-shadow: var(--shadow);
  position: relative;
  z-index: 1;
  animation: cardIn .44s cubic-bezier(.21,.8,.32,1) both;
}
@keyframes cardIn{
  from{ transform: translateY(10px); opacity: 0; }
  to{ transform: translateY(0); opacity: 1; }
}

.login-card{ padding: 22px 18px 26px; }
.card-title{
  margin: 2px 4px 14px;
  font-size: 20px; font-weight: 700;
}

.login-form { display: grid; gap: 14px; }

.field .label{
  display: block; font-weight: 600; font-size: 14px; margin: 2px 2px 8px;
}
.field input[type="email"],
.field input[type="password"],
.field input[type="text"]{
  width: 100%;
  font-size: 16px;
  padding: 14px 12px;
  border-radius: 12px;
  border: 1px solid #d1d5db;
  background: #fff;
  color: var(--text);
  outline: none;
  transition: box-shadow .18s, border-color .18s, transform .06s;
}
@media (prefers-color-scheme: dark){
  .field input[type="email"],
  .field input[type="password"],
  .field input[type="text"]{
    background: #0f172a; border-color: #1f2937;
  }
}
.field input:focus{
  border-color: var(--ring);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--ring) 24%, transparent);
}

/* password reveal */
.password-wrap{
  position: relative;
}
.btn-icon{
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  border: 0; background: transparent; padding: 8px; border-radius: 8px;
  cursor: pointer; line-height: 0;
}
.btn-icon:focus-visible{ outline: 2px solid var(--ring); outline-offset: 2px; }
.btn-icon svg{ fill: var(--muted); }

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

.remember{ display: inline-flex; align-items: center; gap: 8px; font-size: 14px; }
.remember input{ width: 18px; height: 18px; }

.link{
  color: var(--brand);
  text-decoration: none; font-weight: 600;
}
.link:focus-visible{ outline: 2px solid var(--ring); outline-offset: 2px; border-radius: 6px; }

.btn-primary{
  width: 100%;
  display: inline-grid;
  grid-auto-flow: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 16px;
  font-size: 16px; font-weight: 700;
  color: #fff;
  background: linear-gradient(90deg, var(--brand) 60%, var(--brand2));
  border: 0; border-radius: 14px;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(25,118,210,.28);
  transition: transform .06s ease, box-shadow .18s ease, filter .18s ease;
}
.btn-primary:hover{ filter: brightness(1.02); box-shadow: 0 10px 22px rgba(25,118,210,.34); }
.btn-primary:active{ transform: translateY(1px); }
.btn-primary:disabled{ opacity: .7; cursor: not-allowed; }

/* loading spinner in button */
.btn-spinner{
  width: 18px; height: 18px; border-radius: 999px;
  border: 2.5px solid rgba(255,255,255,.45);
  border-top-color: #fff;
  display: none;
  animation: spin .8s linear infinite;
}
@keyframes spin{ to{ transform: rotate(360deg); } }
.btn-primary.is-loading .btn-text{ opacity: .85; }
.btn-primary.is-loading .btn-spinner{ display: inline-block; }

.toast{
  margin: 8px 0 4px;
  padding: 12px 14px;
  border-radius: 12px;
  font-weight: 600;
  box-shadow: var(--shadow);
  border: 1px solid transparent;
}
/* INFO / NEUTRAL */
.toast-info{
  background: color-mix(in srgb, var(--brand) 26%, #fff);
  color: #0b2a4a;
  border-color: color-mix(in srgb, var(--brand) 50%, transparent);
}

/* SUCCESS */
.toast-success{
  background: color-mix(in srgb, var(--brand2) 26%, #fff);
  color: #000000;
  border-color: color-mix(in srgb, var(--brand2) 50%, transparent);
}
.toast-error{
  background: color-mix(in srgb, var(--danger) 28%, #fff);
  color: #7f1d1d;
  border-color: color-mix(in srgb, var(--danger) 45%, transparent);
}
@media (prefers-color-scheme: dark){
  .toast-info{
    background: color-mix(in srgb, var(--brand) 24%, #0b1020);
    color: #000000;
    border-color: color-mix(in srgb, var(--brand) 55%, transparent);
  }
  .toast-success{
    background: color-mix(in srgb, var(--brand2) 22%, #0b1020);
    color: #000000;
    border-color: color-mix(in srgb, var(--brand2) 50%, transparent);
  }
  .toast-error{
    background: color-mix(in srgb, var(--danger) 30%, #0b1020);
    color: #770000;
    border-color: color-mix(in srgb, var(--danger) 55%, transparent);
  }
}

.footnote{
  text-align: center; padding: 14px 16px 24px; z-index: 1;
}

/* Small screens: tighten spacing */
@media (max-width: 480px){
  .card{ margin: 10px auto 16px; padding: 18px 14px; }
  .brand{ padding-bottom: 2px; }
}


.toast-ok{
  background: color-mix(in srgb, var(--brand2) 18%, #fff);
  color: #065f46;
}
@media (prefers-color-scheme: dark){
  .toast-ok{
    background: color-mix(in srgb, var(--brand2) 26%, #0b1020);
    color: #d1fae5;
  }
}