:root {
    --color-white: #f3f3f3;
    --color-primary: #fc2882;
    --color-primary-alpha: rgba(252, 40, 130, 0.9);
    --color-background: rgba(27, 27, 50, 0.95);
    --color-input: #ffffff;
    --color-text: #333333;
    --color-border: #ced4da;
    --color-focus: #80bdff;
    --color-error: #dc3545;
    --color-success: #28a745;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-white);
    margin: 0;
    min-height: 100vh;
    background: var(--color-primary);
    background-image: linear-gradient(135deg,
            rgba(252, 40, 130, 0.8),
            rgba(136, 136, 206, 0.7)), url('https://cdn.freecodecamp.org/testable-projects-fcc/images/survey-form-background.jpeg');
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
}

.container {
    width: 100%;
    max-width: 720px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.header {
    text-align: center;
    margin-bottom: 2rem;
    animation: fadeInDown 0.8s ease-out;
}

.title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.description {
    font-size: 1.1rem;
    font-weight: 300;
    font-style: italic;
    opacity: 0.9;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.form-container {
    background: var(--color-background);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--color-white);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    color: var(--color-text);
    background-color: var(--color-input);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--color-focus);
    box-shadow: 0 0 0 3px rgba(128, 189, 255, 0.25);
    transform: translateY(-1px);
}

.form-control:invalid {
    border-color: var(--color-error);
}

.form-control:valid {
    border-color: var(--color-success);
}

.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 3rem;
    appearance: none;
}

.radio-group,
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.radio-item,
.checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
    padding: 0.5rem;
    border-radius: var(--border-radius);
}

.radio-item:hover,
.checkbox-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.radio-input,
.checkbox-input {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.textarea {
    min-height: 120px;
    resize: vertical;
    font-family: inherit;
}

.submit-button {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-white);
    background: linear-gradient(135deg, var(--color-primary), #e91e63);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--box-shadow);
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.submit-button:active {
    transform: translateY(0);
}

.required {
    color: var(--color-primary);
    margin-left: 0.25rem;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        margin: 1rem auto;
        padding: 0 0.5rem;
    }

    .form-container {
        padding: 1.5rem;
    }

    .radio-group,
    .checkbox-group {
        gap: 0.5rem;
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible for better accessibility */
.radio-input:focus-visible,
.checkbox-input:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}