@import url("https://fonts.googleapis.com/css2?family=Roboto:wght@100;300;400;500;700;900&display=swap");

:root {
  --primary-blue: #4b8ef1;
  --secondary-blue: #87ceeb;
  --dark-blue: #2a2a2a;
  --light-blue: #e6f3ff;
  --white: #ffffff;
  --text-dark: #2a2a2a;
  --text-light: #555;
  --gradient-primary: linear-gradient(105deg, rgba(91, 104, 235, 1) 0%, rgba(40, 225, 253, 1) 100%);
  --gradient-secondary-bg: linear-gradient(to right, #f2f2f2, #e6f3ff);
  --shadow-soft: 0px 5px 8px rgba(0, 0, 0, 0.03);
  --shadow-medium: 0px 8px 15px rgba(0, 0, 0, 0.08);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Roboto", sans-serif;
}

body {
  background: var(--gradient-secondary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.container {
  background-color: var(--white);
  border-radius: 20px;
  box-shadow: var(--shadow-medium);
  position: relative;
  overflow: hidden;
  width: 768px;
  max-width: 100%;
  min-height: 480px;
}

.container p {
  font-size: 14px;
  line-height: 20px;
  letter-spacing: 0.3px;
  margin: 20px 0;
  color: var(--text-light);
}

.container span {
  font-size: 12px;
  color: var(--text-light);
}

.container a {
  color: var(--primary-blue);
  font-size: 13px;
  text-decoration: none;
  margin: 15px 0 10px;
  transition: color 0.3s ease;
}

.container a:hover {
  color: var(--dark-blue);
}

.container button {
  background: var(--gradient-primary);
  color: var(--white);
  font-size: 14px;
  padding: 12px 45px;
  border: 1px solid transparent;
  border-radius: 23px;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-top: 15px;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: var(--shadow-soft);
}

.container button:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(40, 225, 253, 0.2);
}

.container button.hidden {
  background-color: transparent;
  border-color: var(--white);
  color: var(--white);
  box-shadow: none;
}

.container button.hidden:hover {
  transform: translateY(-2px);
  background-color: rgba(255, 255, 255, 0.1);
  box-shadow: none;
}

.container form {
  background-color: var(--white);
  display: flex;
  align-items: center;
  flex-direction: column;
  height: 100%;
  padding: 0 40px;
}

.container input,
.container select.gender-select {
  background-color: #f0f8ff;
  border: 1px solid #e0e0e0;
  margin: 8px 0;
  padding: 12px 15px;
  font-size: 14px;
  border-radius: 8px;
  width: 100%;
  outline: none;
  color: var(--text-dark);
}

.container input:focus,
.container select.gender-select:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 1px var(--primary-blue);
}

.form-container {
  position: absolute;
  top: 0;
  height: 100%;
  transition: all 0.6s ease-in-out;
  overflow-y: hidden;
}

.sign-in {
  left: 0;
  width: 50%;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 0 40px;
}

.sign-in form {
  padding-top: 30px;
  padding-bottom: 30px;
  height: auto;
}

.container.active .sign-in {
  transform: translateX(100%);
}

.sign-up {
  left: 0;
  width: 50%;
  opacity: 0;
  z-index: 1;
  height: 100%;
  overflow-y: auto;
  justify-content: flex-start;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.sign-up form {
  padding-top: 25px;
  padding-bottom: 15px;
}

.container.active .sign-up {
  transform: translateX(100%);
  opacity: 1;
  z-index: 5;
  animation: move 0.6s;
}

@keyframes move {
  0%,
  49.99% {
    opacity: 0;
    z-index: 1;
  }
  50%,
  100% {
    opacity: 1;
    z-index: 5;
  }
}

.social-icons {
  margin: 10px 0;
}

.social-icons a {
  border: 1px solid #ddd;
  border-radius: 50%;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  margin: 0 6px;
  width: 45px;
  height: 45px;
  color: var(--primary-blue);
  transition: all 0.3s ease;
}

.social-icons a:hover {
  background-color: var(--primary-blue);
  color: var(--white);
  border-color: var(--primary-blue);
  transform: translateY(-2px);
}

.toggle-container {
  position: absolute;
  top: 0;
  left: 50%;
  width: 50%;
  height: 100%;
  overflow: hidden;
  transition: all 0.6s ease-in-out;
  border-radius: 150px 0 0 100px;
  z-index: 1000;
}

.container.active .toggle-container {
  transform: translateX(-100%);
  border-radius: 0 150px 100px 0;
}

.toggle {
  background: var(--gradient-primary);
  height: 100%;
  color: var(--white);
  position: relative;
  left: -100%;
  width: 200%;
  transform: translateX(0);
  transition: all 0.6s ease-in-out;
}

.container.active .toggle {
  transform: translateX(50%);
}

.toggle-panel {
  position: absolute;
  width: 50%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 0 30px;
  text-align: center;
  top: 0;
  transition: all 0.6s ease-in-out;
}

.toggle-panel h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--white);
}

.toggle-panel p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.5;
  margin: 10px 0 20px;
}

.toggle-left {
  transform: translateX(-200%);
}

.container.active .toggle-left {
  transform: translateX(0);
}

.toggle-right {
  right: 0;
  transform: translateX(0);
}

.container.active .toggle-right {
  transform: translateX(200%);
}

@media (max-width: 768px) {
  body {
    overflow-y: auto;
  }

  .container {
    min-height: 480px;
    max-height: 90vh;
    margin: 10px auto;
    overflow: hidden;
  }

  .form-container {
    height: 100%;
    overflow-y: hidden;
  }

  .sign-in {
    overflow-y: hidden;
    padding: 0 30px;
  }

  .sign-in form {
    padding-top: 25px;
    padding-bottom: 25px;
    height: auto;
  }

  .sign-up {
    overflow-y: auto;
    height: 100%;
  }

  .sign-up form {
    padding-top: 20px;
    padding-bottom: 10px;
  }

  .container.active .sign-up {
    height: 100%;
  }

  .container form {
    padding-top: 0;
    padding-bottom: 0;
  }

  .toggle-container {
    height: 50%;
  }

  .toggle-panel {
    height: 100%;
  }
}

@media (max-width: 480px) {
  .container {
    min-height: 480px;
  }

  .sign-in {
    padding: 0 20px;
  }

  .sign-in form {
    padding-top: 20px;
    padding-bottom: 20px;
    height: auto;
  }

  .sign-up form {
    padding-top: 15px;
    padding-bottom: 5px;
  }
}