* { box-sizing: border-box; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background-color: #14181d;
  background-image:
    linear-gradient(rgba(255, 138, 61, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 138, 61, 0.05) 1px, transparent 1px);
  background-size: 28px 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
}
.auth-box {
  background: #1b2127;
  padding: 2.5rem 2.6rem;
  border-radius: 6px;
  border: 1px solid #2c343c;
  border-top: 2px solid #ff8a3d;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 20px rgba(0, 0, 0, 0.4);
  width: 100%;
  max-width: 380px;
}
.mark {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  background: rgba(255, 138, 61, 0.14);
  border: 1px solid #ff8a3d;
  color: #ff8a3d;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
h1 { font-size: 1.2rem; font-weight: 800; letter-spacing: -0.01em; margin: 0 0 0.2rem; color: #e7ecf0; }
h2 { font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; margin: 0 0 1.4rem; color: #8a97a3; }
label { display: block; font-size: 0.74rem; font-weight: 700; margin-top: 1rem; color: #8a97a3; text-transform: uppercase; letter-spacing: 0.04em; }
input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  margin-top: 0.35rem;
  border: 1px solid #2c343c;
  border-radius: 3px;
  font-size: 0.95rem;
  font-family: inherit;
  background: #10141a;
  color: #e7ecf0;
  transition: border-color 0.15s;
}
input:focus {
  outline: none;
  border-color: #ff8a3d;
  box-shadow: 0 0 0 3px rgba(255, 138, 61, 0.14);
}
button {
  width: 100%;
  margin-top: 1.6rem;
  padding: 0.65rem;
  background: #ff8a3d;
  color: #1a120a;
  border: none;
  border-radius: 3px;
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: background 0.15s;
}
button:hover { background: #ff9d5c; }
.error { color: #ff8a8a; background: rgba(255, 93, 93, 0.12); padding: 0.6rem 0.9rem; border-radius: 3px; font-size: 0.85rem; margin-bottom: 1rem; border: 1px solid rgba(255, 93, 93, 0.3); }