/* ================= RESET ================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  min-height: 100vh;
  background-image: url("https://t3.ftcdn.net/jpg/02/97/01/96/360_F_297019634_vErqaI5PqCGfvThJlZZirfTaprPKDPqy.jpg");
  background-size: cover;
  background-position: center;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

/* ================= CONTAINER ================= */
.auth-container {
  width: 900px;
  height: 540px;
  background: #fff;
  display: flex;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 30px 60px rgba(0,0,0,0.4);
}

/* ================= LEFT ================= */
.auth-left {
  width: 45%;
  background: #111;
  color: white;
  padding: 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.auth-left span {
  color: #f9c74f;
}

/* ================= RIGHT ================= */
.auth-right {
  width: 55%;
  padding: 60px;
}

/* ================= FORM ================= */
.form {
  display: none;
  animation: slide 0.5s ease;
}

.form.active {
  display: block;
}

.form input {
  width: 100%;
  padding: 14px;
  margin-bottom: 12px;
  border-radius: 8px;
  border: 1px solid #ccc;
  outline: none;
}

.form button {
  width: 100%;
  padding: 14px;
  background: #f9c74f;
  border: none;
  border-radius: 30px;
  cursor: pointer;
  font-weight: bold;
}

.form button:hover {
  background: #ffd166;
}

/* ================= LINKS ================= */
.link {
  margin-top: 12px;
  font-size: 14px;
  cursor: pointer;
}

.link span {
  color: #f9c74f;
  font-weight: bold;
}

/* ================= ERROR ================= */
.error {
  color: red;
  font-size: 13px;
  margin-bottom: 10px;
}

/* ================= PASSWORD STRENGTH ================= */
.strength {
  font-size: 14px;
  margin-bottom: 10px;
}

.strength span {
  font-weight: bold;
}

/* ================= ANIMATION ================= */
@keyframes slide {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* RESPONSIVE DESIGN */

/* Tablets */
@media (max-width: 900px) {
  .auth-container {
    width: 100%;
    height: auto;
  }

  .auth-left,
  .auth-right {
    padding: 40px;
  }
}

/* Mobile Devices */
@media (max-width: 600px) {

  body {
    padding: 15px;
  }

  .auth-container {
    flex-direction: column;
    height: auto;
    border-radius: 16px;
  }

  .auth-left {
    width: 100%;
    padding: 40px 25px;
    text-align: center;
  }

  .auth-right {
    width: 100%;
    padding: 35px 25px;
  }

  .auth-left h1,
  .auth-left h2,
  .auth-left p {
    text-align: center;
  }

  .form input {
    padding: 12px;
  }

  .form button {
    padding: 12px;
  }
}

/* Small Phones */
@media (max-width: 400px) {

  .auth-left,
  .auth-right {
    padding: 30px 18px;
  }

  .link {
    font-size: 13px;
  }
}