:root { color-scheme: dark; }
html, body { margin: 0; padding: 0; min-height: 100vh; background: #0a1018; color: #fff; font-family: 'Inter', system-ui, sans-serif; }

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(0,180,216,.18), transparent 60%),
    #0a1018;
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: #141d2c;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 18px;
  padding: 32px 28px;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,.45);
}

.brand-mark {
  width: 38px; height: 38px;
  border-radius: 9px;
  background: linear-gradient(150deg, #00b4d8, #0a73a8);
  display: grid; place-items: center;
  color: #031018;
  box-shadow: 0 6px 16px -6px rgba(0,180,216,.4);
  margin-bottom: 14px;
}
.brand-mark svg { width: 20px; height: 20px; }

.brand-name { font-family: 'Bebas Neue', sans-serif; font-size: 22px; letter-spacing: .06em; line-height: 1; }
.brand-name small {
  display: block;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 10px; color: #00b4d8;
  letter-spacing: .28em; margin-top: 3px;
}

.login-card h1 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 34px; letter-spacing: .04em;
  text-transform: uppercase;
  margin: 24px 0 6px;
}
.login-card .sub { color: rgba(255,255,255,.62); font-size: 14px; margin: 0 0 22px; line-height: 1.55; }

.login-card form { display: flex; flex-direction: column; gap: 14px; }
.login-card label { display: flex; flex-direction: column; gap: 6px; font-size: 12.5px; font-weight: 500; }
.login-card input {
  background: #0a1018;
  border: 1px solid rgba(255,255,255,.14);
  color: #fff;
  padding: 11px 13px;
  border-radius: 9px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.login-card input:focus {
  outline: none;
  border-color: #00b4d8;
  box-shadow: 0 0 0 3px rgba(0,180,216,.14);
}

.login-card .err {
  background: rgba(255,107,107,.08);
  border: 1px solid rgba(255,107,107,.3);
  color: #ff6b6b;
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 13px;
}

.login-card button {
  margin-top: 6px;
  padding: 11px 16px;
  border: 0;
  border-radius: 10px;
  background: #00b4d8;
  color: #031018;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease;
}
.login-card button:hover:not(:disabled) { background: #52e3ff; transform: translateY(-1px); }
.login-card button:disabled { opacity: .55; cursor: default; }

.login-card .back {
  display: inline-block;
  margin-top: 18px;
  color: rgba(255,255,255,.55);
  font-size: 12.5px;
  text-decoration: none;
}
.login-card .back:hover { color: #00b4d8; }