* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
  
body {
    align-items: center;
    background: linear-gradient(135deg, #121212, #1E1E1E);
    display: flex;
    font-family: 'Inter', sans-serif;
    height: 100vh;
    justify-content: center;
    margin: 0;
    text-align: center;
    overflow: hidden;
    position: relative;
}

#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: 0;
}
  
.back-button {
    background: rgba(255, 107, 107, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 107, 107, 0.2);
    border-radius: 8px;
    color: #E0E0E0;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    left: 15px;
    padding: 12px;
    position: absolute;
    text-decoration: none;
    top: 15px;
    transition: all 0.3s ease-in-out;
    z-index: 10;
}
  
.back-button:hover {
    background: rgba(255, 107, 107, 0.2);
    border: 1px solid rgba(255, 107, 107, 0.3);
    box-shadow: 0 0 15px rgba(255, 107, 107, 0.2);
}
  
.back-button svg {
    transition: transform 0.3s ease;
}

.back-button:hover svg {
    transform: translateX(-3px);
}

.signup-form {
    align-items: center;
    background: rgba(30, 30, 30, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 16px;
    border: 1px solid rgba(78, 205, 196, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    padding: 40px;
    width: fit-content;
    z-index: 1;
    position: relative;
    overflow: hidden;
    width: 500px;
}

.signup-form::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(78, 205, 196, 0.1) 0%, rgba(78, 205, 196, 0) 70%);
    z-index: -1;
    animation: rotate 15s linear infinite;
}

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.form-title {
    color: #4ECDC4;
    font-size: 40px;
    font-weight: bold;
    margin-bottom: 35px;
    text-shadow: 0 0 10px rgba(78, 205, 196, 0.3);
}

.inputs-part {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
}

.input-container {
    width: 100%;
    position: relative;
}

.input-container::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #4ECDC4;
    transition: width 0.3s ease;
}

.input-container:focus-within::after {
    width: 100%;
}

.row-wrapper {
    display: flex;
    gap: 15px;
    width: 100%;
}

.row-wrapper .input-container {
    flex: 1;
}

@media (max-width: 768px) {
    .row-wrapper {
        flex-direction: column;
        gap: 15px;
    }
}
  
input {
    background: rgba(44, 44, 44, 0.7);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(78, 205, 196, 0.1);
    border-radius: 8px;
    color: #E0E0E0;
    font-size: 17px;
    height: 50px;
    padding: 15px;
    transition: all 0.3s ease-in-out;
    width: 100%;
}
  
input::placeholder {
    color: #B0B0B0;
    font-size: 14px;
    transition: color 0.3s ease-in-out;
}
  
input:hover,
input:focus {
    background: rgba(44, 44, 44, 0.9);
    border: 1px solid rgba(78, 205, 196, 0.3);
    box-shadow: 0 0 10px rgba(78, 205, 196, 0.2);
    outline: none;
}
  
.submit-button {
    background: linear-gradient(135deg, rgba(78, 205, 196, 0.8), rgba(58, 168, 161, 0.8));
    border: none;
    border-radius: 8px;
    color: #ffffff;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    height: 50px;
    margin-top: 30px;
    padding: 0;
    transition: all 0.3s ease-in-out;
    width: 100%;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 1;
}
  
.submit-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.7s ease-in-out;
    z-index: -1;
}
  
.submit-button:hover::before {
    left: 100%;
}
  
.submit-button:hover {
    background: linear-gradient(135deg, rgba(78, 205, 196, 1), rgba(58, 168, 161, 1));
    box-shadow: 0 0 20px rgba(78, 205, 196, 0.4);
}
  
.form-footer {
    color: #E0E0E0;
    font-size: 14px;
    margin-top: 15px;
}
  
.form-footer a {
    color: #4ECDC4;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease-in-out;
    position: relative;
}
  
.form-footer a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: #4ECDC4;
    transition: width 0.3s ease;
}
  
.form-footer a:hover {
    color: #3aa8a1;
}
  
.form-footer a:hover::after {
    width: 100%;
}

@media (max-width: 480px) {
    .login-form {
        width: 80%;
        padding: 25px;
    }

    .form-footer {
        font-size: 12px;
    }
}