:root {
  color-scheme: dark;
  --bg: #0f172a;
  --panel: #111827;
  --panel-2: #1f2937;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --line: rgba(255,255,255,.1);
  --accent: #8b5cf6;
  --accent-2: #06b6d4;
  --danger: #ef4444;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 10%, rgba(139,92,246,.28), transparent 28rem),
    radial-gradient(circle at 80% 80%, rgba(6,182,212,.20), transparent 26rem),
    var(--bg);
}

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

.login-card {
  width: min(420px, 100%);
  border: 1px solid var(--line);
  background: rgba(17,24,39,.82);
  backdrop-filter: blur(18px);
  border-radius: 28px;
  padding: 28px;
  box-shadow: 0 24px 80px rgba(0,0,0,.35);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.brand-icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  font-weight: 900;
  font-size: 24px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

h1 {
  margin: 0;
  font-size: 26px;
}

p {
  margin: 4px 0 0;
  color: var(--muted);
}

form {
  display: grid;
  gap: 16px;
}

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

input {
  width: 100%;
  border: 1px solid var(--line);
  outline: none;
  border-radius: 16px;
  padding: 14px 16px;
  background: rgba(31,41,55,.9);
  color: var(--text);
  font-size: 16px;
}

input:focus {
  border-color: rgba(139,92,246,.75);
  box-shadow: 0 0 0 4px rgba(139,92,246,.18);
}

button,
.button {
  border: none;
  border-radius: 16px;
  padding: 14px 18px;
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-weight: 800;
  font-size: 16px;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}