/* Experience Section */
.experience {
    padding: var(--spacing-xxl) 0;
}

.experience-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--light-gray);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: var(--spacing-xl);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    width: 16px;
    height: 16px;
    background: var(--secondary-color);
    border-radius: 50%;
    border: 3px solid var(--white);
    box-shadow: 0 0 0 3px var(--light-gray);
}

.timeline-date {
    color: var(--secondary-color);
    font-weight: var(--font-weight-semibold);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
}

.timeline-content h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.timeline-content h4 {
    color: var(--text-light);
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
}

.achievements {
    list-style: none;
    margin-top: var(--spacing-md);
}

.achievements li {
    padding: var(--spacing-xs) 0;
    color: var(--text-light);
    position: relative;
    padding-left: var(--spacing-md);
}

.achievements li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: var(--font-weight-bold);
}

.expertise-areas {
    background: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    height: fit-content;
}

.expertise-areas h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.expertise-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal);
}

.expertise-item:hover {
    transform: translateY(-3px);
}

.expertise-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-xs);
}

.expertise-item span {
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    color: var(--text-dark);
    text-align: center;
}

/* Contact Section */
.contact {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

.contact-info h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.contact-info > p {
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
}

.contact-methods {
    margin-bottom: var(--spacing-lg);
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--white);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.contact-method i {
    font-size: 1.25rem;
    color: var(--secondary-color);
    margin-top: var(--spacing-xs);
    flex-shrink: 0;
}

.contact-method h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
}

.contact-method p {
    margin: 0;
    color: var(--text-light);
}

.response-time {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.response-time i {
    color: var(--success-color);
}

.response-time span {
    color: var(--text-dark);
    font-weight: var(--font-weight-medium);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.contact-form {
    display: grid;
    gap: var(--spacing-md);
}

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

.form-group label {
    font-weight: var(--font-weight-medium);
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-sm);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-normal);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

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

.checkbox-group {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: 0.875rem;
    line-height: 1.4;
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    flex-shrink: 0;
    margin-top: 2px;
}

.checkbox-label input:checked + .checkmark {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
}

.checkbox-label input:checked + .checkmark::after {
    content: '✓';
    color: var(--white);
    font-size: 12px;
    font-weight: var(--font-weight-bold);
}

.btn-loading {
    display: none;
}

.btn.loading .btn-text {
    display: none;
}

.btn.loading .btn-loading {
    display: inline;
}

.form-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    display: none;
}

.form-status.success {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
    display: block;
}

.form-status.error {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
    display: block;
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3,
.footer-section h4 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: var(--medium-gray);
    margin-bottom: var(--spacing-md);
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: var(--medium-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--white);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: all var(--transition-normal);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-bottom p {
    color: var(--medium-gray);
    margin: 0;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Loading Animation */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: var(--spacing-xs);
}