:root {
    --color-void-black: #0a0a0f;
    --color-deep-space: #1a1a2e;
    --color-nebula-purple: #16213e;
    --color-cosmic-blue: #0f3460;
    --color-starlight: #e94560;
    --color-nova-glow: #ff6b9d;
    --color-white-star: #f0f0f0;
    --color-text-dim: #b0b0b0;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
    --shadow-glow: 0 0 20px rgba(233, 69, 96, 0.3);
    --shadow-glow-strong: 0 0 30px rgba(233, 69, 96, 0.5);
    --transition: 0.3s ease;
    --radius: 8px;
    --radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    padding: var(--spacing-md);
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--color-white-star);
    background: linear-gradient(135deg, var(--color-void-black) 0%, var(--color-deep-space) 50%, var(--color-nebula-purple) 100%);
    overflow-x: hidden;
    animation: fadeIn 0.8s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--color-white-star);
    background: var(--color-starlight);
    text-decoration: none;
    z-index: 1000;
    transition: top var(--transition);
}

.skip-link:focus {
    top: 0;
}

*:focus-visible {
    outline: 3px solid var(--color-starlight);
    outline-offset: 2px;
}

.page-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    background: rgba(26, 26, 46, 0.95);
    border: 1px solid rgba(233, 69, 96, 0.2);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glow), 0 10px 40px rgba(0, 0, 0, 0.8);
    animation: slideUp 1s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(0px);
        opacity: 0;
    }
    to {
        transform: translateY(-80px);
        opacity: 1;
    }
}

.survey-header {
    padding: var(--spacing-lg);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-cosmic-blue) 0%, var(--color-nebula-purple) 100%);
    border: 1px solid var(--color-starlight);
    border-radius: var(--radius);
    box-shadow: var(--shadow-glow);
}

.survey-header h1 {
    margin-bottom: var(--spacing-sm);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-white-star);
    text-shadow: 0 0 10px rgba(233, 69, 96, 0.5);
}

.survey-header p {
    font-size: 1.1rem;
    color: var(--color-text-dim);
}

h2 {
    margin: var(--spacing-lg) 0 var(--spacing-md) 0;
    padding-bottom: var(--spacing-xs);
    font-size: 1.5rem;
    color: var(--color-starlight);
    border-bottom: 2px solid var(--color-starlight);
    text-shadow: var(--shadow-glow);
}

h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
    color: var(--color-nova-glow);
}

h4 {
    margin: var(--spacing-lg) 0 var(--spacing-md) 0;
    font-size: 1.1rem;
    font-style: italic;
    text-align: center;
    color: var(--color-text-dim);
}

.duck-image {
    vertical-align: middle;
    width: 15%;
    height: auto;
    margin: 0 var(--spacing-xs);
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.3));
}

.form-group {
    margin-bottom: var(--spacing-md);
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-white-star);
}

.required-indicator {
    font-weight: 700;
    color: var(--color-starlight);
}

em {
    margin-left: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--color-text-dim);
}

input[type="text"],
input[type="email"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: 1rem;
    font-family: inherit;
    line-height: 1.5;
    color: var(--color-white-star);
    background: var(--color-void-black);
    border: 2px solid var(--color-cosmic-blue);
    border-radius: 6px;
    transition: all var(--transition);
}

input[type="text"]:hover,
input[type="email"]:hover,
input[type="number"]:hover,
select:hover,
textarea:hover {
    border-color: var(--color-nova-glow);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
    border-color: var(--color-starlight);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
    outline: none;
}

::placeholder {
    color: var(--color-text-dim);
    opacity: 0.7;
}

select {
    cursor: pointer;
}

option {
    background: var(--color-deep-space);
    color: var(--color-white-star);
}

.radio-group label,
.checkbox-group label {
    display: flex;
    align-items: center;
    margin: var(--spacing-xs) 0;
    padding: var(--spacing-sm);
    background: rgba(15, 52, 96, 0.3);
    border: 1px solid transparent;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition);
}

.radio-group label:hover,
.checkbox-group label:hover {
    background: rgba(15, 52, 96, 0.6);
    border-color: var(--color-starlight);
}

input[type="radio"],
input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-right: var(--spacing-sm);
    cursor: pointer;
    accent-color: var(--color-starlight);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

button[type="submit"] {
    position: relative;
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--color-white-star);
    background: linear-gradient(135deg, var(--color-starlight) 0%, var(--color-nova-glow) 100%);
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow-glow-strong);
    cursor: pointer;
    overflow: hidden;
    transition: all var(--transition);
}

button[type="submit"]:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 40px rgba(233, 69, 96, 0.7);
}

button[type="submit"]::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

button[type="submit"]:hover::before {
    left: 100%;
}

button[type="submit"]:active {
    transform: translateY(0);
}

.optional-indicator {
    margin-left: var(--spacing-xs);
    padding: 2px 8px;
    font-size: 0.9rem;
    color: var(--color-text-dim);
    background: rgba(137, 129, 129, 0.3);
    border-radius: 4px;
}

@media (max-width: 768px) {
    .page-container {
        padding: var(--spacing-md);
    }
    .survey-header h1 {
        font-size: 1.5rem;
    }
    h2 {
        font-size: 1.3rem;
    }
    .duck-image {
        width: 20%;
    }
}

@media (max-width: 480px) {
    body {
        padding: var(--spacing-xs);
    }
    .page-container {
        padding: var(--spacing-sm);
    }
    .survey-header h1 {
        font-size: 1.3rem;
    }
    h2 {
        font-size: 1.1rem;
    }
    .duck-image {
        width: 25%;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}