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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --accent-color: #8b5cf6;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

/* Particles Background */
.particles-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 100%);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0 80px;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

.profile-section {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.profile-img {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    padding: 5px;
    position: relative;
    box-shadow: var(--shadow-xl);
    transition: transform 0.3s ease;
}

.profile-img:hover {
    transform: scale(1.05);
}

.profile-img .profile-placeholder {
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.profile-placeholder svg {
    width: 80%;
    height: 80%;
}

.status-badge {
    margin-top: 20px;
    background: var(--bg-primary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-md);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

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

.hero-text {
    flex: 1;
    width: 100%;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    white-space: nowrap;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-tags {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 2rem;
    justify-content: center;
}

.tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

/* Sections */
.section {
    padding: 80px 0;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.title-underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    margin: 0 auto;
    border-radius: 2px;
}

/* About Section */
.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 3rem;
    line-height: 1.8;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stat-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.stat-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

/* Experience Section */
.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.experience-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.experience-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.exp-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.exp-header h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    font-weight: 700;
}

.exp-duration {
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 600;
    white-space: nowrap;
}

.exp-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Skills Section */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.category-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.skill-tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(1.05);
}

/* Chatbot Section */
.chatbot-container {
    max-width: 800px;
    margin: 0 auto;
}

.chatbot-box {
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.chatbot-header {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.chatbot-avatar {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.chatbot-info h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.online-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    opacity: 0.9;
}

.chatbot-messages {
    height: 400px;
    overflow-y: auto;
    padding: 2rem;
    background: var(--bg-secondary);
}

.message {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    animation: slideIn 0.3s ease;
}

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

.bot-message {
    justify-content: flex-start;
}

.user-message {
    justify-content: flex-end;
}

.message-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.user-message .message-avatar {
    background: var(--text-secondary);
}

.message-content {
    max-width: 70%;
}

.message-content p {
    background: white;
    padding: 1rem 1.25rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    line-height: 1.6;
    color: var(--text-primary);
}

.user-message .message-content p {
    background: var(--primary-color);
    color: white;
}

.chatbot-input-area {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-top: 1px solid var(--border-color);
}

.chat-input {
    flex: 1;
    padding: 0.75rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 25px;
    font-size: 1rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s ease;
}

.chat-input:focus {
    border-color: var(--primary-color);
}

.send-btn {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.send-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.send-btn:active {
    transform: scale(0.95);
}

.send-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Loading dots animation */
.loading-dots {
    display: flex;
    align-items: center;
    gap: 4px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

/* Travel Section */
.travel-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}

.travel-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.travel-stats {
    display: flex;
    gap: 2rem;
    justify-content: flex-start;
}

.travel-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.travel-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.travel-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-travel {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
    align-self: flex-start;
}

.btn-travel:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.4);
}

.btn-icon {
    font-size: 1.5rem;
    animation: rotate 4s linear infinite;
}

.btn-arrow {
    transition: transform 0.3s ease;
}

.btn-travel:hover .btn-arrow {
    transform: translateX(5px);
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.travel-flags {
    position: relative;
}

.flag-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

.flag-item {
    font-size: 3rem;
    text-align: center;
    transition: transform 0.3s ease;
    cursor: pointer;
}

.flag-item:hover {
    transform: scale(1.2) rotate(10deg);
}

/* Contact Section */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 3rem;
    line-height: 1.8;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.contact-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.footer-content p {
    margin-bottom: 0.5rem;
}

.footer-tagline {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Selection */
::selection {
    background: var(--primary-color);
    color: white;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .travel-preview {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .flag-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 0.75rem;
    }
    
    .flag-item {
        font-size: 2.5rem;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .nav-links {
        display: none;
    }
    
    .profile-img {
        width: 200px;
        height: 200px;
    }
    
    .travel-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .flag-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.5rem;
        padding: 1.5rem;
    }
    
    .flag-item {
        font-size: 2rem;
    }
    
    .btn-travel {
        width: 100%;
        justify-content: center;
    }
}