:root {
    --primary-color: #2E3A59;
    --secondary-color: #EC6E4C;
    --accent-color: #31A24C;
    --light-background: #F8F9FA;
    --white: #FFFFFF;
    --text-color: #333;
    --border-color: #E0E0E0;
    --shadow-light: rgba(0, 0, 0, 0.05);
    --shadow-medium: rgba(0, 0, 0, 0.1);
    --error-color: #dc3545;
    --google-blue: #4285F4;
    --google-red: #EA4335;
    --google-yellow: #FBBC05;
    --google-green: #34A853;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Nunito', sans-serif;
    color: var(--text-color);
    background-color: var(--light-background);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1.25rem;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    color: var(--primary-color);
    margin-bottom: 0.8em;
}

h1 { font-size: 2.2rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

.auth-container, .form-container {
    background-color: var(--white);
    padding: 1.875rem;
    border-radius: 0.625rem;
    box-shadow: 0 0.5rem 1.5625rem var(--shadow-medium);
    max-width: 28.125rem;
    width: 100%;
    text-align: center;
}

.auth-container h2, .form-container h2 {
    margin-bottom: 1.5625rem;
    color: var(--primary-color);
    font-size: 1.8rem;
}

.form-group {
    margin-bottom: 1.25rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem 0.9375rem;
    border: 0.0625rem solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: 'Nunito', sans-serif;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.1875rem rgba(49, 162, 76, 0.2);
}

.error-message {
    color: var(--error-color);
    font-size: 0.85rem;
    margin-top: 0.3125rem;
    text-align: left;
    display: none;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    text-align: center;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
    border: none;
    font-family: 'Poppins', sans-serif;
    font-size: 1.1rem;
    width: 100%;
    margin-top: 1.25rem;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--white);
    box-shadow: 0 0.25rem 0.5rem rgba(236, 110, 76, 0.2);
}
.btn-primary:hover {
    background-color: #d15d3e;
    transform: translateY(-2px);
    box-shadow: 0 0.375rem 0.75rem rgba(236, 110, 76, 0.3);
}

.btn-google {
    background-color: var(--white);
    color: var(--text-color);
    border: 0.0625rem solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
}
.btn-google:hover {
    background-color: #f1f3f4;
    transform: translateY(-2px);
    box-shadow: 0 0.375rem 0.75rem rgba(0, 0, 0, 0.1);
}
.google-icon {
    width: 1.125rem;
    height: 1.125rem;
}

.form-link {
    display: block;
    margin-top: 1.5625rem;
    font-size: 0.95rem;
    color: #666;
}
.form-link a {
    font-weight: 600;
    color: var(--primary-color);
}
.form-link a:hover {
    color: var(--secondary-color);
}

#toast-container {
    position: fixed;
    bottom: 1.25rem;
    right: 1.25rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}
.toast {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 0.9375rem 1.25rem;
    border-radius: 0.5rem;
    box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.2);
    opacity: 0;
    transform: translateY(1.25rem);
    animation: fadein 0.5s forwards, fadeout 0.5s forwards 2.5s;
    min-width: 15.625rem;
    max-width: 21.875rem;
    word-wrap: break-word;
}
.toast-success { background-color: var(--accent-color); }
.toast-error { background-color: var(--error-color); }
.toast-info { background-color: var(--primary-color); }

@keyframes fadein {
    from { opacity: 0; transform: translateY(1.25rem); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeout {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(1.25rem); }
}

.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    display: none;
}
.spinner {
    border: 0.375rem solid var(--border-color);
    border-top: 0.375rem solid var(--accent-color);
    border-radius: 50%;
    width: 3.75rem;
    height: 3.75rem;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.password-container {
    position: relative;
}
.password-toggle {
    position: absolute;
    right: 0.9375rem;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: color 0.3s ease;
}
.password-toggle:hover {
    color: var(--secondary-color);
}

@media (max-width: 768px) {
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.6rem; }
    h3 { font-size: 1.4rem; }
    .auth-container {
        padding: 1.25rem;
    }
    .auth-container h2 {
        font-size: 1.6rem;
        margin-bottom: 1.25rem;
    }
    .form-group label {
        font-size: 0.9rem;
    }
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 0.625rem 0.75rem;
        font-size: 0.95rem;
    }
    .btn {
        padding: 0.625rem 0.9375rem;
        font-size: 1rem;
    }
    .form-link {
        font-size: 0.9rem;
        margin-top: 1rem;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.4rem; }
    h3 { font-size: 1.2rem; }
    .auth-container {
        padding: 0.9375rem;
        width: 95%;
    }
    .auth-container h2 {
        font-size: 1.4rem;
        margin-bottom: 0.9375rem;
    }
    .form-group {
        margin-bottom: 0.9375rem;
    }
    .form-group label {
        font-size: 0.85rem;
    }
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 0.5rem 0.625rem;
        font-size: 0.9rem;
    }
    .btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
        margin-top: 0.9375rem;
    }
    .form-link {
        font-size: 0.85rem;
        margin-top: 0.75rem;
    }
    .password-toggle {
        font-size: 1rem;
        right: 0.75rem;
    }
}