@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    --color-primary: #00b0a4; 
    --color-danger: #FF0060;
    --color-success: #51b5a3;
    --color-warning: #F7D060;
    --color-white: #fff;
    --color-info-dark: #545454;
    --color-dark: #b6b6b6;
    --color-light: rgba(132, 139, 200, 0.18);
    --color-dark-variant: #677483;
    --color-background: #f6f6f9;

    --card-border-radius: 2rem;
    --border-radius-1: 0.4rem;
    --border-radius-2: 1.2rem;

    --card-padding: 1.8rem;
    --padding-1: 1.2rem;

    --box-shadow: 0 2rem 3rem var(--color-light);
}

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

body {
    background-color: var(--color-background);
    background: linear-gradient(to right, var(--color-background), var(--color-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    height: 100vh;
}

.container {
    background-color: #fff;
    border-radius: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.35);
    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;
}

.container span {
    font-size: 12px;
}

.container a {
    color: #333;
    font-size: 13px;
    text-decoration: none;
    margin: 15px 0 10px;
}

.container button {
    background-color: var(--color-primary);
    color: #fff;
    font-size: 12px;
    padding: 10px 45px;
    border: 1px solid transparent;
    border-radius: 8px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-top: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.container button:hover {
    background-color: var(--color-success);
}

.container button.hidden {
    background-color: transparent;
    border-color: #fff;
}

.container form {
    background-color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 40px;
    height: 100%;
}

.container input, .container select {
    background-color: #eee;
    border: none;
    margin: 8px 0;
    padding: 10px 15px;
    font-size: 13px;
    border-radius: 8px;
    width: 100%;
    outline: none;
}

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

.sign-in {
    left: 0;
    width: 50%;
    z-index: 2;
}

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

.sign-up {
    left: 0;
    width: 50%;
    opacity: 0;
    z-index: 1;
}

.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;
    }
}

.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-color: var(--color-primary);
    height: 100%;
    background: linear-gradient(to right, var(--color-success), var(--color-primary));
    color: #fff;
    position: relative;
    left: -100%;
    height: 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;
    transform: translateX(0);
    transition: all 0.6s ease-in-out;
}

.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%);
}

/* Error message styles */
.error-message {
    color: var(--color-danger);
    font-size: 12px;
    margin-top: 8px;
    text-align: center;
    min-height: 20px;
    max-width: 100%;
}

/* Loading spinner */
.spinner {
    display: none;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(0, 176, 164, 0.3);
    border-radius: 50%;
    border-top-color: var(--color-primary);
    animation: spin 1s linear infinite;
    margin: 8px auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Modal styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: #fff;
    padding: 20px;
    border-radius: 15px;
    width: 400px;
    max-width: 90%;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    position: relative;
}

.close {
    position: absolute;
    right: 15px;
    top: 10px;
    font-size: 24px;
    cursor: pointer;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        min-height: 800px;
        height: 100vh;
        margin: 0;
        border-radius: 0;
    }
    
    .form-container {
        width: 100%;
        left: 0;
        height: 50%;
    }
    
    .sign-in {
        top: 0;
    }
    
    .sign-up {
        top: 50%;
        transform: translateY(0);
    }
    
    .container.active .sign-in {
        transform: translateY(100%);
    }
    
    .container.active .sign-up {
        transform: translateY(-100%);
    }
    
    .toggle-container {
        left: 0;
        top: 50%;
        width: 100%;
        height: 50%;
    }
    
    .toggle {
        left: 0;
        width: 100%;
        height: 200%;
    }
    
    .toggle-panel {
        width: 100%;
        height: 50%;
    }
    
    .toggle-left {
        transform: translateY(-200%);
    }
    
    .toggle-right {
        top: 50%;
    }
    
    .container.active .toggle-left {
        transform: translateY(0);
    }
    
    .container.active .toggle-right {
        transform: translateY(200%);
    }
}