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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #1e3a5f 0%, #2c5282 100%);
    min-height: 100vh;
    color: #ffffff;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 0;
}

header .logo {
    max-width: 220px;
    height: auto;
    margin-bottom: 20px;
}

header h1 {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: 8px;
    color: #ffffff;
}

.intro-section {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
}

.intro-section h2 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #10b981;
}

.intro-section p {
    line-height: 1.6;
    margin-bottom: 20px;
    color: #e5e7eb;
}

.model-container {
    text-align: center;
    margin: 30px 0;
}

.model-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.model-caption {
    font-size: 14px;
    font-style: italic;
    color: #d1d5db;
    margin-top: 10px;
}

.contact-section {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 8px;
    color: #f3f4f6;
    font-size: 14px;
}

.form-group input {
    padding: 12px 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    font-size: 15px;
    transition: all 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #10b981;
    background: rgba(255, 255, 255, 0.1);
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.questions-section {
    margin-top: 30px;
}

.question-category {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 25px;
}

.question-category h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #10b981;
    border-bottom: 2px solid rgba(16, 185, 129, 0.3);
    padding-bottom: 10px;
}

.question-block {
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 8px;
}

.question-block:last-child {
    margin-bottom: 0;
}

.question-text {
    font-size: 15px;
    line-height: 1.5;
    margin-bottom: 15px;
    color: #f9fafb;
    font-weight: 500;
}

.answer-text {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    font-size: 14px;
    font-family: inherit;
    resize: vertical;
    margin-bottom: 15px;
    transition: all 0.3s;
}

.answer-text:focus {
    outline: none;
    border-color: #10b981;
    background: rgba(255, 255, 255, 0.1);
}

.answer-text::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.rating {
    display: flex;
    align-items: center;
    gap: 15px;
}

.rating > label {
    font-weight: 600;
    color: #e5e7eb;
    font-size: 14px;
}

.rating-buttons {
    display: flex;
    gap: 8px;
}

.rating-buttons input[type="radio"] {
    display: none;
}

.rating-buttons label {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
    color: #ffffff;
    font-size: 14px;
}

.rating-buttons label:hover {
    background: rgba(16, 185, 129, 0.2);
    border-color: #10b981;
    transform: scale(1.1);
}

.rating-buttons input[type="radio"]:checked + label {
    background: #10b981;
    border-color: #10b981;
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.5);
}

.submit-section {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 40px;
    margin-bottom: 30px;
}

.submit-button,
.reset-button {
    padding: 15px 40px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.submit-button {
    background: #10b981;
    color: #ffffff;
}

.submit-button:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(16, 185, 129, 0.4);
}

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

.reset-button {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.reset-button:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.message {
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
    text-align: center;
    font-weight: 600;
    display: none;
}

.message.success {
    background: rgba(16, 185, 129, 0.2);
    border: 2px solid #10b981;
    color: #10b981;
    display: block;
}

.message.error {
    background: rgba(239, 68, 68, 0.2);
    border: 2px solid #ef4444;
    color: #ef4444;
    display: block;
}

/* Download Sectie */
.download-section {
    margin: 40px auto;
    max-width: 500px;
    animation: fadeIn 0.5s ease-in;
}

.download-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    color: white;
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.3);
}

.download-icon {
    font-size: 60px;
    margin-bottom: 20px;
    animation: bounce 1s infinite;
}

.download-card h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: white;
}

.download-filename {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 25px;
    font-family: 'Courier New', monospace;
}

.download-button {
    background: white;
    color: #667eea;
    border: none;
    padding: 15px 40px;
    font-size: 16px;
    font-weight: bold;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.download-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

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

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

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}