:root {
  --navy: #031b3c;
  --blue: #0f67e9;
  --text: #0e1b33;
  --muted: #59667a;
  --border: #dce4ee;
  --page: #f4f7fb;
  --white: #fff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Arial, sans-serif;
  color: var(--text);
  background: var(--page);
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  background: var(--navy);
  color: var(--white);
}

.header-inner {
  min-height: 90px;
  display: flex;
  align-items: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border: 2px solid #3d92ff;
  border-radius: 7px;
  font-size: 1.45rem;
  font-weight: 800;
}

.brand-name {
  display: block;
  font-size: 1.85rem;
  letter-spacing: -.04em;
}

.brand-name span { color: var(--blue); }

.brand small {
  display: block;
  margin-top: -2px;
  font-size: .7rem;
}

.signin-page {
  min-height: calc(100vh - 90px);
  display: grid;
  place-items: center;
  padding: 48px 20px;
}

.signin-card {
  width: min(460px, 100%);
  padding: 36px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--white);
  box-shadow: 0 18px 48px rgba(3, 27, 60, .12);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--blue);
  font-weight: 800;
}

h1 {
  margin: 0 0 8px;
  color: var(--navy);
  font-size: 2.25rem;
}

.intro {
  margin: 0 0 26px;
  color: var(--muted);
}

form {
  display: grid;
  gap: 10px;
}

label {
  margin-top: 8px;
  color: var(--navy);
  font-weight: 700;
}

input {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid #bac7d8;
  border-radius: 7px;
  font: inherit;
}

input:focus {
  outline: 3px solid rgba(15, 103, 233, .16);
  border-color: var(--blue);
}

button {
  margin-top: 14px;
  padding: 13px 18px;
  border: 0;
  border-radius: 7px;
  background: var(--blue);
  color: var(--white);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

button:hover { background: var(--navy); }
button:disabled { opacity: .65; cursor: wait; }

.form-message {
  margin: 8px 0 0;
  padding: 11px 12px;
  border-radius: 7px;
  background: #fff1f1;
  color: #a01d1d;
  font-size: .9rem;
}

.signin-links {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 22px;
  font-size: .9rem;
}

.signin-links a {
  color: var(--blue);
  font-weight: 700;
  text-decoration: none;
}

.signin-links a:hover { text-decoration: underline; }

@media (max-width: 560px) {
  .signin-card { padding: 26px 20px; }
  .brand-name { font-size: 1.35rem; }
  .brand-mark { width: 44px; height: 44px; }
  .brand small { display: none; }
  .signin-links { flex-direction: column; gap: 10px; }
}