* {
  box-sizing: border-box;
  font-family: 'Segoe UI', system-ui, sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(135deg, #020617, #0f172a, #020617);
  color: #e5e7eb;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* CONTENEDOR CENTRAL */
.auth-container {
  width: 100%;
  max-width: 420px;
  padding: 20px;
}

.auth-card {
  background: #020617;
  border-radius: 18px;
  padding: 30px 28px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.7);
  border: 1px solid rgba(255,255,255,0.08);
}

.auth-title {
  text-align: center;
  font-size: 26px;
  margin-bottom: 6px;
}

.auth-sub {
  text-align: center;
  opacity: .7;
  margin-bottom: 25px;
}

/* INPUTS */
.input-group {
  margin-bottom: 14px;
}

.input-group input {
  width: 100%;
  padding: 13px 14px;
  border-radius: 12px;
  border: 1px solid #1f2937;
  background: #020617;
  color: white;
  font-size: 15px;
  outline: none;
}

.input-group input:focus {
  border-color: #ef4444;
}

/* BOTÓN */
.btn-main {
  width: 100%;
  padding: 13px;
  border-radius: 14px;
  border: none;
  cursor: pointer;
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: white;
  font-weight: 600;
  font-size: 15px;
  transition: .2s;
}

.btn-main:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

/* LINKS */
.auth-links {
  text-align: center;
  margin-top: 18px;
  font-size: 14px;
}

.auth-links a {
  color: #ef4444;
  text-decoration: none;
}

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

/* MENSAJES */
.msg-error {
  background: rgba(239,68,68,.15);
  color: #fca5a5;
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 12px;
  font-size: 14px;
}

.msg-ok {
  background: rgba(34,197,94,.15);
  color: #86efac;
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 12px;
  font-size: 14px;
}

/* LOGO TEXTO */
.logo {
  text-align: center;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 14px;
  color: #ef4444;
}