:root {
    --primary-color: #ff4444;
    --secondary-color: #333;
    --accent-color: #555;
    --background-color: #f0f4f8;
    --text-color: #333;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --transition-speed: 0.3s;
    --gradient-start: #f0f4f8;
    --gradient-end: #e0e8f0;
    --card-background: #ffffff;
    --input-border: 1px solid #ddd;
    --input-focus: 2px solid var(--primary-color);
    --input-hover: rgba(255, 68, 68, 0.1);
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 50% 50%, rgba(255, 68, 68, 0.05) 0%, transparent 50%);
    background-size: 200px 200px;
    z-index: -1;
    pointer-events: none;
}

header {
    padding: 1.5rem;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

nav {
    background-color: var(--primary-color);
    padding: 1rem;
    box-shadow: 0 2px 4px var(--shadow-color);
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 1rem;
}

nav ul li {
    display: inline;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.25rem;
    font-size: 1.1rem;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

nav ul li a i {
    font-size: 1.2rem;
}

nav ul li a:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.form-section {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow-color);
    max-width: 600px;
    margin: 2rem auto;
}

.form-section h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: var(--input-border);
    border-radius: 6px;
    transition: all var(--transition-speed) ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border: var(--input-focus);
    box-shadow: 0 0 0 3px var(--input-hover);
}

.submit-btn {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.submit-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.submit-btn i {
    font-size: 1.1rem;
}

h1 {
    text-align: center;
    color: var(--accent-color);
    margin-bottom: 2rem;
    font-size: 2.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

h1 i {
    font-size: 2rem;
}

footer {
    text-align: center;
    padding: 2rem 1rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, rgba(51, 51, 51, 0.9) 100%);
    color: white;
    margin-top: auto;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.footer-content i {
    font-size: 1.2rem;
}

.footer-content p {
    margin: 0;
    font-size: 0.95rem;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 768px) {
    .form-section {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    nav ul {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .form-group input,
    .form-group textarea {
        font-size: 0.9rem;
    }
    
    .submit-btn {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    header {
        padding: 1rem;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    .form-section {
        padding: 1rem;
        margin: 0.5rem;
    }
    
    .form-group {
        margin-bottom: 1rem;
    }
}