:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --background-color: #ecf0f1;
    --text-color: #2c3e50;
    --light-gray: #bdc3c7;
    --white: #ffffff;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    margin: 0;
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--box-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.language-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.language-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid var(--white);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.language-btn:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-2px);
}

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

.flag-icon {
    width: 20px;
    height: 15px;
    border-radius: 2px;
}

.menu-toggle {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.menu-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Main Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
}

/* Sidebar */
.sidebar {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 2rem;
    height: fit-content;
    position: sticky;
    top: 6rem;
}

.profile-card {
    text-align: center;
    margin-bottom: 2rem;
}

.profile-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
    border: 4px solid var(--secondary-color);
    box-shadow: var(--box-shadow);
}

.profile-card h1 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 2rem;
    font-weight: 600;
}

.profile-card .position {
    color: var(--secondary-color);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.profile-card .location {
    color: var(--light-gray);
    margin-bottom: 1rem;
}

.download-btn {
    display: inline-block;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    margin-bottom: 1.5rem;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
    font-size: 1.2rem;
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--box-shadow);
}

/* Main Content */
.main-content {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 2rem;
}

.section {
    margin-bottom: 3rem;
}

.section:last-child {
    margin-bottom: 0;
}

.section h2 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--secondary-color);
    position: relative;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--accent-color);
}

/* About Section */
.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
    text-align: justify;
}

/* Certifications Grid */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.cert-card {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.cert-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.cert-card i {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.cert-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.cert-card a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
}

/* Experience Timeline */
.timeline {
    position: relative;
    margin-left: 1rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--secondary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0.5rem;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--secondary-color);
    border: 3px solid var(--white);
    box-shadow: var(--box-shadow);
}

.timeline-content {
    background: var(--background-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateX(5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.timeline-content h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.timeline-content .company {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-content .period {
    color: var(--light-gray);
    font-style: italic;
    margin-bottom: 1rem;
}

.timeline-content ul {
    list-style: none;
    padding: 0;
}

.timeline-content li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
}

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

/* Skills and Languages */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.skill-item {
    background: var(--background-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.skill-item:hover {
    background: var(--secondary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.language-skill {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--background-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    transition: var(--transition);
}

.language-skill:hover {
    background: var(--secondary-color);
    color: var(--white);
}

.skill-level {
    display: flex;
    gap: 0.25rem;
}

.skill-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--light-gray);
    transition: var(--transition);
}

.skill-dot.active {
    background: var(--accent-color);
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
}

/* Overlay Menu */
.overlay {
    height: 0%;
    width: 100%;
    position: fixed;
    z-index: 2000;
    top: 0;
    left: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    overflow-y: hidden;
    transition: 0.5s;
}

.overlay-content {
    position: relative;
    top: 25%;
    width: 100%;
    text-align: center;
    margin-top: 30px;
    color: var(--white);
}

.overlay-content p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.overlay-content a {
    color: var(--white);
    text-decoration: underline;
}

.closebtn {
    position: absolute;
    top: 20px;
    right: 45px;
    font-size: 60px !important;
    color: var(--white);
    cursor: pointer;
    text-decoration: none;
}

.closebtn:hover {
    color: var(--accent-color);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1rem;
    }
    
    .sidebar {
        position: static;
    }
    
    .certifications-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    .header {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }
    
    .profile-image {
        width: 150px;
        height: 150px;
    }
    
    .profile-card h1 {
        font-size: 1.5rem;
    }
    
    .section h2 {
        font-size: 1.5rem;
    }
    
    .timeline {
        margin-left: 0.5rem;
    }
    
    .timeline-item {
        padding-left: 1.5rem;
    }
    
    .certifications-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0.5rem;
    }
    
    .sidebar,
    .main-content {
        padding: 1rem;
    }
    
    .language-btn {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    .overlay-content {
        padding: 0 1rem;
    }
    
    .closebtn {
        right: 15px;
        font-size: 40px !important;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.6s ease-in;
}

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

.slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

.slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

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

/* Education and Certification Lists */
.education-list,
.certification-list,
.volunteer-list {
    list-style: none;
    padding: 0;
}

.education-list li,
.certification-list li,
.volunteer-list li {
    background: var(--background-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    transition: var(--transition);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.education-list li:hover,
.certification-list li:hover,
.volunteer-list li:hover {
    background: var(--secondary-color);
    color: var(--white);
    transform: translateX(5px);
}

.education-list li i,
.certification-list li i,
.volunteer-list li i {
    color: var(--secondary-color);
    font-size: 1.2rem;
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.education-list li:hover i,
.certification-list li:hover i,
.volunteer-list li:hover i {
    color: var(--white);
}

.certification-list a,
.volunteer-list a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
}

.certification-list li:hover a,
.volunteer-list li:hover a {
    color: var(--white);
}

/* Print Styles */
@media print {
    .header,
    .overlay,
    .menu-toggle,
    .language-selector,
    .download-btn,
    .social-links,
    .chatbot-container {
        display: none;
    }

    .container {
        grid-template-columns: 1fr;
        max-width: none;
        padding: 0;
    }

    .sidebar,
    .main-content {
        box-shadow: none;
        background: white;
    }
}

/* Chatbot Styles */
.chatbot-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.chatbot-button {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.chatbot-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }
    50% {
        box-shadow: 0 4px 20px rgba(52, 152, 219, 0.6);
    }
}

.chatbot-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 380px;
    height: 550px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    display: none;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 0.3s ease-out;
}

.chatbot-window.active {
    display: flex;
}

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

.chatbot-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chatbot-header-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 1.1rem;
}

.chatbot-header-info i {
    font-size: 1.5rem;
}

.chatbot-close-btn {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.chatbot-close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chatbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    background: var(--background-color);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chatbot-messages::-webkit-scrollbar {
    width: 8px;
}

.chatbot-messages::-webkit-scrollbar-track {
    background: var(--background-color);
}

.chatbot-messages::-webkit-scrollbar-thumb {
    background: var(--light-gray);
    border-radius: 4px;
}

.chatbot-messages::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

.chatbot-message {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    animation: fadeIn 0.3s ease-out;
}

.chatbot-message.user-message {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.1rem;
}

.bot-message .message-avatar {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: var(--white);
}

.user-message .message-avatar {
    background: var(--light-gray);
    color: var(--white);
}

.message-content {
    max-width: 75%;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    line-height: 1.5;
    word-wrap: break-word;
}

.bot-message .message-content {
    background: var(--white);
    color: var(--text-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.user-message .message-content {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: var(--white);
}

.message-content p {
    margin: 0;
}

.typing-indicator {
    display: flex;
    gap: 0.3rem;
    padding: 0.75rem 1rem;
}

.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--secondary-color);
    animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-10px);
    }
}

.chatbot-input-container {
    padding: 1rem;
    background: var(--white);
    border-top: 1px solid var(--light-gray);
    display: flex;
    gap: 0.5rem;
}

.chatbot-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    transition: var(--transition);
    font-family: inherit;
}

.chatbot-input:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.chatbot-send-btn {
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: var(--white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: var(--transition);
    flex-shrink: 0;
}

.chatbot-send-btn:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.chatbot-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Mobile Responsive Chatbot */
@media (max-width: 480px) {
    .chatbot-window {
        width: calc(100vw - 20px);
        height: calc(100vh - 100px);
        bottom: 80px;
        right: 10px;
    }

    .chatbot-container {
        bottom: 10px;
        right: 10px;
    }

    .chatbot-button {
        width: 56px;
        height: 56px;
        font-size: 24px;
    }

    .message-content {
        max-width: 80%;
    }
}