/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(to bottom, #f0f4f8 0%, #e8f0f8 100%);
    min-height: 100vh;
    position: relative;
}

/* Background Animation */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.background-animation::before,
.background-animation::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 119, 200, 0.05) 0%, transparent 70%);
    animation: float 20s infinite ease-in-out;
}

.background-animation::before {
    width: 500px;
    height: 500px;
    top: -250px;
    left: -250px;
}

.background-animation::after {
    width: 400px;
    height: 400px;
    bottom: -200px;
    right: -200px;
    animation-delay: -10s;
    animation-duration: 25s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(100px, 100px); }
    50% { transform: translate(50px, 200px); }
    75% { transform: translate(-50px, 100px); }
}

/* Header */
.header {
    background: linear-gradient(135deg, #002767 0%, #003d8f 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 15s infinite ease-in-out;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.2); opacity: 0.5; }
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.header .subtitle {
    font-size: 1.2rem;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Main Content */
main {
    padding: 3rem 2rem;
}

/* Form Styles */
.questionnaire-form {
    background: linear-gradient(to bottom, white 0%, #f8fbff 100%);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    margin-bottom: 2rem;
}

.form-section {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid #e8f0f8;
}

.form-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.form-section h2 {
    color: #002767;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #ff6b35 0%, #ff8c42 100%);
    color: white;
    border-radius: 50%;
    font-size: 1rem;
    font-weight: 700;
}

.section-description {
    color: #666;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

/* Form Grid */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

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

.form-group label {
    font-weight: 600;
    color: #002767;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group textarea {
    padding: 0.75rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ff6b35;
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

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

/* Checkbox Grid */
.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.checkbox-card {
    position: relative;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 1.25rem;
    transition: all 0.3s ease;
    cursor: pointer;
    background: white;
}

.checkbox-card:hover {
    border-color: #ff6b35;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.15);
}

.checkbox-card input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.checkbox-card input[type="checkbox"]:checked + label {
    color: #002767;
    font-weight: 600;
}

.checkbox-card input[type="checkbox"]:checked ~ label::before {
    content: '✓';
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #ff6b35 0%, #ff8c42 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
}

.checkbox-card input[type="checkbox"]:checked ~ label {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.05) 0%, rgba(255, 140, 66, 0.05) 100%);
}

.checkbox-card label {
    cursor: pointer;
    display: block;
    padding-right: 2rem;
    position: relative;
    background: transparent;
    border-radius: 8px;
    padding: 0.5rem;
    margin: -0.5rem;
    transition: all 0.3s ease;
}

.checkbox-label {
    font-size: 1rem;
    color: #333;
}

/* Checkbox List (for detailed options) */
.checkbox-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.checkbox-item:hover {
    border-color: #ff6b35;
    background: #fff8f5;
}

.checkbox-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: #ff6b35;
}

.checkbox-item label {
    flex: 1;
    cursor: pointer;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Tooltip */
.tooltip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: #002767;
    color: white;
    border-radius: 50%;
    font-size: 12px;
    cursor: help;
    position: relative;
    font-style: normal;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: #002767;
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 1000;
    max-width: 250px;
    white-space: normal;
    width: max-content;
}

.tooltip:hover::after {
    opacity: 1;
}

/* Integration Details */
.integration-details {
    border-left: 4px solid #ff6b35;
    padding-left: 2rem;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Form Actions */
.form-actions {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
    padding-top: 2rem;
}

.submit-button {
    background: linear-gradient(135deg, #ff6b35 0%, #ff8c42 100%);
    color: white;
    border: none;
    padding: 1rem 3rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

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

.submit-button:disabled {
    background: #ccc;
    cursor: not-allowed;
    box-shadow: none;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s ease;
    text-align: center;
}

.modal-content h2 {
    color: #002767;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.modal-content p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.modal-content.error h2 {
    color: #d32f2f;
}

.modal-button {
    background: linear-gradient(135deg, #ff6b35 0%, #ff8c42 100%);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

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

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Footer */
.footer {
    background: #002767;
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

.footer p {
    opacity: 0.9;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.8rem;
    }

    .header .subtitle {
        font-size: 1rem;
    }

    .questionnaire-form {
        padding: 1.5rem;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .checkbox-grid {
        grid-template-columns: 1fr;
    }

    .integration-details {
        padding-left: 1rem;
    }

    .submit-button {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    main {
        padding: 2rem 1rem;
    }

    .header {
        padding: 2rem 0;
    }

    .section-number {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }
}