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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #2c3e50;
    background: #f5f7fa;
}

.layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 320px;
    height: 100vh;
    background: linear-gradient(180deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 40px 30px;
    overflow-y: auto;
    z-index: 1000;
}

.sidebar::-webkit-scrollbar {
    width: 8px;
}

.sidebar::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.1);
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.3);
    border-radius: 4px;
}

.profile-pic {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    margin: 0 auto 25px;
    display: block;
    border: 5px solid rgba(255,255,255,0.3);
    object-fit: cover;
}

.sidebar h1 {
    font-size: 1.8em;
    margin-bottom: 10px;
    text-align: center;
}

.sidebar .title {
    font-size: 1em;
    opacity: 0.9;
    text-align: center;
    margin-bottom: 20px;
    line-height: 1.5;
}

.sidebar .contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    font-size: 0.9em;
}

.sidebar .contact-item a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.sidebar .contact-item a:hover {
    opacity: 0.7;
}

.sidebar hr {
    border: none;
    border-top: 1px solid rgba(255,255,255,0.3);
    margin: 25px 0;
}

.sidebar-nav {
    margin-bottom: 30px;
}

.sidebar-nav h3 {
    font-size: 1em;
    margin-bottom: 15px;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav ul li {
    margin-bottom: 10px;
}

.sidebar-nav ul li a {
    color: white;
    text-decoration: none;
    transition: all 0.3s;
    display: block;
    padding: 8px 12px;
    border-radius: 5px;
}

.sidebar-nav ul li a:hover {
    background: rgba(255,255,255,0.1);
    padding-left: 20px;
}

.social-links-sidebar {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.social-links-sidebar a {
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 15px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 5px;
    transition: all 0.3s;
    font-size: 0.95em;
}

.social-links-sidebar a:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
}

/* Main Content */
.main-content {
    margin-left: 320px;
    flex: 1;
    padding: 40px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

section {
    padding: 40px 0;
}

h2 {
    font-size: 2em;
    margin-bottom: 30px;
    color: #1e3c72;
    position: relative;
    padding-bottom: 15px;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: #2a5298;
}

.about-content {
    font-size: 1.05em;
    line-height: 1.8;
    color: #555;
}

.about-content p {
    margin-bottom: 15px;
}

.about-content a {
    word-break: break-word;
}

.experience-grid, .education-grid {
    display: grid;
    gap: 25px;
}

.experience-card, .education-card {
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    border-left: 4px solid #2a5298;
}

.experience-card h3, .education-card h3 {
    color: #1e3c72;
    font-size: 1.3em;
    margin-bottom: 8px;
}

.institution-link {
    color: #1e3c72;
    text-decoration: none;
    transition: color 0.3s;
}

.institution-link:hover {
    color: #2a5298;
    text-decoration: underline;
}

.inline-link {
    color: #2a5298;
    text-decoration: none;
    transition: color 0.3s;
}

.inline-link:hover {
    color: #1e3c72;
    text-decoration: underline;
}

.experience-card .position, .education-card .degree {
    color: #2a5298;
    font-size: 1.05em;
    font-weight: 600;
    margin-bottom: 5px;
    line-height: 1.5;
}

.experience-card .date, .education-card .date {
    color: #7f8c8d;
    font-size: 0.9em;
    margin-bottom: 15px;
}

.experience-card ul {
    margin-left: 20px;
    color: #666;
}

.experience-card ul li {
    margin-bottom: 8px;
}

.education-card .details {
    color: #666;
    margin-top: 10px;
    line-height: 1.7;
}

.education-card .details a,
.experience-card .position a {
    word-break: break-word;
}

.skills-container {
    display: grid;
    gap: 25px;
}

.skill-category h3 {
    color: #1e3c72;
    font-size: 1.1em;
    margin-bottom: 12px;
}

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

.skill-tag {
    background: #e8f0fe;
    color: #1e3c72;
    padding: 6px 18px;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: 500;
}

.publication-item, .conference-item, .award-item {
    background: white;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.publication-item .authors {
    color: #555;
    margin-bottom: 8px;
    font-size: 0.95em;
}

.publication-item .title {
    color: #1e3c72;
    font-weight: 600;
    font-size: 1.05em;
    margin-bottom: 8px;
}

.publication-item .journal {
    color: #7f8c8d;
    font-style: italic;
    margin-bottom: 10px;
    font-size: 0.9em;
}

.publication-item a, .conference-item a {
    color: #2a5298;
    text-decoration: none;
    font-size: 0.85em;
    word-break: break-all;
}

.publication-item a:hover, .conference-item a:hover {
    text-decoration: underline;
}

.conference-item .title {
    color: #1e3c72;
    font-weight: 600;
    font-size: 1em;
    margin-bottom: 8px;
}

.conference-item .event {
    color: #7f8c8d;
    font-style: italic;
    margin-bottom: 10px;
    font-size: 0.9em;
}

.award-item {
    color: #555;
    line-height: 1.7;
}

.reviewing-content {
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.reviewing-content h3 {
    color: #1e3c72;
    margin-bottom: 15px;
    font-size: 1.1em;
}

.reviewing-content p {
    color: #555;
    line-height: 1.8;
    margin-bottom: 12px;
}

.reviewing-content ul {
    margin-left: 20px;
    color: #666;
}

.reviewing-content ul li {
    margin-bottom: 8px;
}

.subsection-title {
    color: #1e3c72;
    margin: 30px 0 20px 0;
    font-size: 1.2em;
}

footer {
    background: #1a252f;
    color: #aaa;
    text-align: center;
    padding: 20px;
    font-size: 0.9em;
    margin-left: -40px;
    margin-right: -40px;
    margin-bottom: -40px;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    background: white;
    color: #1e3c72;
    border: 2px solid #1e3c72;
    padding: 12px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.3em;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: all 0.3s;
}

.mobile-toggle:hover {
    background: #1e3c72;
    color: white;
    box-shadow: 0 6px 16px rgba(0,0,0,0.2);
    transform: scale(1.05);
}

.mobile-toggle:active {
    transform: scale(0.95);
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: 80px 20px 40px;
    }

    .mobile-toggle {
        display: block;
    }

    footer {
        margin-left: -20px;
        margin-right: -20px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 280px;
    }

    h2 {
        font-size: 1.6em;
    }

    .main-content {
        padding: 80px 15px 30px;
    }
}