:root {
    --primary-color: #4CAF50;
    --primary-dark: #45a049;
    --secondary-color: #2196F3;
    --danger-color: #f44336;
    --warning-color: #ff9800;
    --dark-color: #333;
    --light-color: #f4f4f4;
    --gray-color: #ddd;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.main-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    margin-right: 10px;
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: var(--transition);
}

.nav-menu a:hover {
    background: var(--primary-color);
    color: white;
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Form Container */
.form-container {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem auto;
    max-width: 800px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-title {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 1rem;
    font-size: 2rem;
}

.form-description {
    text-align: center;
    color: #666;
    margin-bottom: 2rem;
}

/* Form Elements */
.form-group {
    margin-bottom: 1.5rem;
}

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

.required {
    color: var(--danger-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

/* Buttons */
.btn-submit, .btn-reset {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-submit {
    background: var(--primary-color);
    color: white;
}

.btn-submit:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.3);
}

.btn-reset {
    background: var(--gray-color);
    color: var(--dark-color);
    margin-left: 1rem;
}

.btn-reset:hover {
    background: #ccc;
    transform: translateY(-2px);
}

/* Checkbox and Radio */
.checkbox-group, .radio-group {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.form-checkbox, .form-radio {
    margin-right: 0.5rem;
}

/* Message */
.message {
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    display: none;
}

.message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Footer */
.main-footer {
    background: var(--dark-color);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3, .footer-section h4 {
    margin-bottom: 1rem;
    color: white;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ddd;
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary-color);
}

.social-icons {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-icons a {
    font-size: 1.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    color: #aaa;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hamburger {
        display: block;
    }
    
    .form-container {
        padding: 1rem;
        margin: 1rem auto;
    }
    
    .btn-submit, .btn-reset {
        width: 100%;
        margin: 0.5rem 0;
    }
}