:root {
  --navy: #092d68;
  --blue: #0e5bb6;
  --orange: #ef690e;
  --ink: #162033;
  --muted: #6c7890;
  --line: #dfe6f0;
  --surface: #ffffff;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at 10% 10%, #e7f0ff 0, transparent 35%), linear-gradient(135deg, #f7faff 0%, #eef3f9 100%);
}

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

.login-card {
  width: min(100%, 450px);
  padding: 40px;
  border: 1px solid rgba(9, 45, 104, .1);
  border-radius: 24px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 22px 60px rgba(16, 45, 88, .16);
}

.brand-mark {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  color: #fff;
  border-radius: 18px;
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: -0.08em;
  background: linear-gradient(135deg, var(--blue), var(--navy));
  box-shadow: 0 12px 24px rgba(14, 91, 182, .2);
}

.eyebrow {
  margin: 26px 0 8px;
  color: var(--orange);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .16em;
}

h1 { margin: 0; color: var(--navy); font-size: clamp(1.8rem, 5vw, 2.3rem); }
.intro { margin: 12px 0 30px; color: var(--muted); line-height: 1.6; }

form { display: grid; gap: 10px; }
label { margin-top: 7px; color: var(--navy); font-size: .88rem; font-weight: 700; }
input {
  width: 100%;
  padding: 14px 15px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 12px;
  outline: 0;
  font: inherit;
  background: #fbfdff;
}
input:focus { border-color: var(--blue); box-shadow: 0 0 0 4px rgba(14, 91, 182, .11); }

button {
  margin-top: 18px;
  padding: 14px 18px;
  color: #fff;
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  background: linear-gradient(135deg, var(--blue), var(--navy));
}
button:disabled { cursor: wait; opacity: .7; }

.message { min-height: 24px; margin: 4px 0 0; color: #c33b31; font-size: .9rem; }
.message.success { color: #177245; }
.back-link { display: block; margin-top: 24px; color: var(--blue); font-size: .88rem; text-align: center; text-decoration: none; }

@media (max-width: 520px) {
  .login-card { padding: 28px 22px; }
}