:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #07110f;
  color: #dce4e1;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at 75% 0%, rgba(20, 184, 166, 0.12), transparent 38rem),
    #07110f;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.login-card {
  width: min(100%, 28rem);
  padding: 2.25rem;
  border: 1px solid #263a36;
  border-radius: 1.25rem;
  background: rgba(13, 26, 24, 0.96);
  box-shadow: 0 2rem 6rem rgba(0, 0, 0, 0.45);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-bottom: 1.5rem;
  border-radius: 0.85rem;
  background: #2dd4bf;
  color: #07110f;
  font-weight: 800;
  font-size: 1.3rem;
}

.eyebrow {
  margin: 0 0 0.45rem;
  color: #5eead4;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 { margin: 0; font-size: clamp(1.65rem, 5vw, 2.1rem); }
.description { margin: 0.75rem 0 2rem; color: #9bada7; line-height: 1.5; }
label { display: block; margin-bottom: 0.55rem; color: #d9e0eb; font-weight: 650; }

input {
  width: 100%;
  padding: 0.85rem 0.95rem;
  border: 1px solid #3b524d;
  border-radius: 0.7rem;
  background: #07110f;
  color: #fff;
  font: inherit;
  outline: none;
}

input:focus { border-color: #2dd4bf; box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.14); }
.error { min-height: 1.4rem; margin: 0.65rem 0; color: #ff9d9d; font-size: 0.9rem; }

button {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 0;
  border-radius: 0.7rem;
  background: #2dd4bf;
  color: #07110f;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

button:hover { background: #5eead4; }
button:focus-visible { outline: 3px solid rgba(45, 212, 191, 0.35); outline-offset: 3px; }
button:disabled { cursor: wait; opacity: 0.65; }