:root {
  color-scheme: dark;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  --bg: #10151f;
  --panel: #171f2c;
  --text: #f5f7fb;
  --muted: #a9b5c7;
  --line: #2c384a;
  --accent: #35c2a1;
  --accent-strong: #22a98b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 10%, rgba(53, 194, 161, 0.22), transparent 30%),
    linear-gradient(145deg, #10151f 0%, #192433 52%, #121821 100%);
  color: var(--text);
}

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

.login-panel {
  width: min(100%, 420px);
  display: grid;
  gap: 28px;
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  background: rgba(23, 31, 44, 0.88);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
}

.logo {
  width: 128px;
  max-width: 45vw;
  justify-self: center;
  object-fit: contain;
}

.title-block {
  text-align: center;
}

h1 {
  margin: 0;
  font-size: clamp(42px, 12vw, 64px);
  line-height: 0.95;
  font-weight: 800;
  letter-spacing: 0;
}

p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.login-form {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

input {
  width: 100%;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 14px;
  background: #0f141d;
  color: var(--text);
  font: inherit;
}

input:focus {
  outline: 2px solid rgba(53, 194, 161, 0.55);
  outline-offset: 2px;
  border-color: var(--accent);
}

button {
  height: 50px;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #07130f;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

button:hover,
button:focus-visible {
  background: var(--accent-strong);
}

.form-message {
  min-height: 20px;
  margin: 0;
  color: #ffb4a8;
  font-size: 14px;
}

.signed-in {
  display: grid;
  gap: 14px;
  text-align: center;
}

.signed-in strong {
  font-size: 20px;
}

.signed-in span {
  color: var(--muted);
}

@media (max-width: 430px) {
  .shell {
    padding: 16px;
  }

  .login-panel {
    padding: 26px 20px;
  }
}