body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
}

main {
    padding: 2em;
}

nav {
    background-color: #333; /* Adjust to match your design */
    padding: 1em;
    position: relative;
    z-index: 2000; /* ensure navigation sits above page content */
}

nav ul {
    display: flex;
    justify-content: center; /* Center the navigation items */
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-name {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-weight: bold;
    color: white;
    font-size: 32px;
    font-style: italic;
}

nav ul li:not(.nav-name) {
    display: inline-flex;
    position: relative;
    margin: 0 10px;
    padding: 0;
    height: 100%;
    align-items: center;
}

/* Navigation links */
nav ul li:not(.nav-name) a {
    display: inline-block;
    color: white;
    text-decoration: none;
    padding: 15px 20px;
    transition: background-color 0.3s ease;
    position: relative;
    height: 100%;
    box-sizing: border-box;
}

nav ul li:not(.nav-name) a:hover {
    background-color: hsl(0, 0%, 15%);
}

nav ul li ul {
    background-color: #333;
    display: block;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease-out 0.1s; /* Added delay */
    border-radius: 0 0 4px 4px;
    z-index: 2100; /* dropdown above everything */
}

/* Dropdown menu items */
nav ul li ul li a {
    padding: 10px 15px;
    border-bottom: 1px solid #555;
    text-align: center;
    transition: background-color 0.3s ease;
}

nav ul li ul li a:hover {
    background-color: #666;
}


nav ul li:hover > ul {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}
nav > ul > li:not(.nav-name) {
    position: relative;
    z-index: 1;
}

nav > ul > li:not(.nav-name)::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: transparent;
    z-index: -1;
    transition: all 0.4s ease-in-out;
    transform: scale(1);
    border-radius: 4px;
}

nav > ul > li:not(.nav-name):hover::before {
    background-color: hsl(0, 0%, 15%);
    transform: scale(1.05);
}

/* Hover effects handled by background-color transition */

/* Pulsing animation for profile image */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 0, 0, 0.4);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(0, 0, 0, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 0, 0, 0);
    }
}

/* Hero Container */
.hero-container {
    display: flex;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    gap: 4rem;
    align-items: flex-start;
    justify-content: center;
}

.profile-section {
    flex: 1;
    min-width: 280px;
    max-width: 400px;
    text-align: center;
    padding: 1rem;
}

.about-section {
    flex: 2;
    min-width: 300px;
    max-width: 600px;
}

/* Typography */
h1 {
    margin: 0.5rem 0;
    color: #333;
    font-size: 2.2rem;
}

h2 {
    color: #555;
    margin: 0.5rem 0 1.5rem 0;
    font-size: 1.3rem;
    font-weight: normal;
}

h3 {
    color: #333;
    margin: 2rem 0 1rem 0;
    font-size: 1.4rem;
}

p {
    line-height: 1.7;
    color: #444;
    margin: 1rem 0;
    font-size: 1.05rem;
}

/* Lists */
.expertise-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    padding: 0;
    list-style: none;
    margin: 1.5rem 0;
}

.expertise-list li {
    background: #f5f5f5;
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    font-size: 0.95rem;
    color: #333;
    border: 1px solid #e0e0e0;
}

/* Contact Info */
.contact-info {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #eee;
}

a {
    color: #0066cc;
    text-decoration: none;
    transition: color 0.2s;
}

/* Profile Links */
.profile-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
    padding: 1rem 0;
}

.profile-links a {
    color: #555;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    background: #f5f5f5;
    width: 2.8rem;
    height: 2.8rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.profile-links a:hover {
    background: #333;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .profile-links {
        gap: 1rem;
    }
    
    .profile-links a {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.3rem;
    }
}

a:hover {
    color: #004d99;
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 900px) {
    .hero-container {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
        padding: 1rem;
    }
    
    .profile-section, .about-section {
        width: 100%;
        max-width: 600px;
        margin: 0 auto;
    }
    
    .profile-image {
        width: 180px;
        height: 180px;
    }
}

/* Hero Section */
.hero {
    display: flex;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 2rem;
    gap: 4rem;
    align-items: center;
    position: relative; /* create stacking context above next section */
    z-index: 2;
}

.profile-image-container {
    position: relative;
    width: 250px;
    height: 250px;
    margin: 0 auto 2rem;
    perspective: 1000px;
    border-radius: 50%;
    animation: pulse 4s infinite;
    transition: all 0.3s ease;
}

.speech-bubble {
    position: absolute;
    top: 20px;
    left: -140px;
    background: #333;
    color: white;
    padding: 12px 20px;
    border-radius: 18px;
    font-size: 16px;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    white-space: nowrap;
    z-index: 10;
    font-weight: 500;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.speech-bubble::after {
    content: '';
    position: absolute;
    right: -16px;
    left: auto;
    top: 18px;
    border-width: 6px 0 6px 16px;
    border-style: solid;
    border-color: transparent transparent transparent #333;
}

.show-bubble {
    opacity: 1;
    transform: translateY(0);
}

/* Ask hint bubble positioning (appears after profile click) */
#askHint {
    top: auto;
    bottom: -18px;
    left: -10px;
}
#askHint::after {
    right: auto;
    left: 22px;
    top: -10px;
    border-width: 0 6px 12px 6px;
    border-color: transparent transparent #333 transparent;
}

.profile-image-container:hover {
    animation: pulse 2s infinite;
    transform: scale(1.05);
}

.coin-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.3s ease;
    transform-style: preserve-3d;
    cursor: pointer;
}

.profile-image-container:hover .coin-inner {
    transform: scale(1.1);
}

.coin-front, .coin-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.coin-back {
    transform: rotateY(180deg);
}

/* Animation is now handled by JavaScript through the Web Animations API */

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1), 0 6px 20px rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    cursor: pointer; /* Limit click cursor to the image */
}

.profile-info {
    flex: 2;
}

.profile-info h1 {
    margin: 0 0 0.5rem 0;
    color: #333;
}

.profile-info h2 {
    margin: 0 0 1.5rem 0;
    color: #555;
    font-weight: normal;
    font-size: 1.2rem;
}

.profile-info p {
    line-height: 1.7;
    color: #444;
    margin: 0;
}

/* Chatbox styles (Claude-inspired warm palette) */
.chatbox {
    width: 100%;
    box-sizing: border-box;
    margin-top: 1rem;
    background: #fff7ed; /* warm beige */
    border: 1px solid #fed7aa; /* light orange border */
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    overflow: hidden;
    position: relative;
    z-index: 10; /* render above following sections */
    font-size: 0.75rem; /* slightly smaller overall text size (~2pt less than default) */
}

/* Smooth collapse/expand: animate header and messages */
.chatbox .chatbox-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    background: #ffedd5; /* lighter */
    border-bottom: 1px solid #fed7aa;
    max-height: 48px;
    transition: all 0.25s ease;
    overflow: hidden;
}
.chatbox.collapsed .chatbox-header {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    border-bottom: 0;
    opacity: 0;
    pointer-events: none;
}

.chatbox .chatbox-title {
    font-weight: 600;
    color: #7c2d12; /* deep warm */
}

.chatbox .chatbox-minimize {
    background: #fb923c; /* orange */
    color: #fff;
    border: 1px solid #f59e0b; /* slightly darker border */
    font-size: 14px;
    line-height: 1;
    padding: 4px 10px;
    border-radius: 8px; /* rounded rectangle chip */
    cursor: pointer;
    box-shadow: 0 1px 2px rgba(0,0,0,0.06);
}
.chatbox .chatbox-minimize:hover {
    background: #f97316; /* darker on hover */
}

.chatbox .chatbox-messages {
    max-height: 260px;
    overflow-y: auto;
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: #fffaf3;
    transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.2s ease;
}
.chatbox.collapsed .chatbox-messages {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding-top: 0;
    padding-bottom: 0;
}

.chat-msg {
    padding: 8px 10px;
    border-radius: 10px;
    font-size: 0.85rem; /* reduced */
    line-height: 1.4;
}
.chat-msg.user {
    background: #fde68a; /* warm yellow */
    align-self: flex-end;
}
.chat-msg.assistant {
    background: #ffedd5; /* pale peach */
    border: 1px solid #fed7aa;
    align-self: flex-start;
}

.chatbox .chatbox-input {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
}
.chatbox .chatbox-input input[type="text"] {
    flex: 1;
    min-width: 0; /* allow flexbox to shrink input so the send button is fully visible */
    padding: 8px 10px; /* slightly tighter */
    border: 1px solid #fecba1;
    border-radius: 8px;
    font-size: 0.85rem; /* reduced */
    outline: none;
    background: #fff;
}
.chatbox .chatbox-input input[type="text"]:focus {
    border-color: #fb923c;
    box-shadow: 0 0 0 3px rgba(251, 146, 60, 0.15);
}
.chatbox .chatbox-input .chatbox-send {
    background: #fb923c; /* orange */
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 8px 12px;
    cursor: pointer;
    transition: background 0.2s ease;
}
.chatbox .chatbox-input .chatbox-send:hover {
    background: #f97316;
}

@media (max-width: 900px) {
    .hero {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
        padding: 1rem;
    }
    
    .profile-image-container {
        margin: 0 auto;
    }
}

/* Experience Timeline Section */
.experience-section {
    background-color: #f8f9fa;
    padding: 4rem 0;
    position: relative;
    box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.05);
}

.experience-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 10px;
    background: linear-gradient(to bottom, rgba(0,0,0,0.05), transparent);
    pointer-events: none;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: #333;
    font-size: 2rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: #0066cc;
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    overflow: hidden;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background-color: #dee2e6;
    transform: translateX(-50%);
    z-index: 0;
}

.timeline-item {
    position: relative;
    margin-bottom: 1.5rem;
    width: 46%;
    clear: both;
    z-index: 1;
}

.timeline-item:nth-child(even) {  /* Changed from :nth-child(odd) */
    float: left;
    text-align: right;
    padding-right: 5%;
}

.timeline-item:nth-child(odd) {  /* Changed from :nth-child(even) */
    float: right;
    text-align: left;
    padding-left: 5%;
}

.timeline-card {
    display: block;
    background: white;
    border-radius: 8px;
    padding: 1rem 1.25rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: all 0.2s ease;
    text-decoration: none;
    color: inherit;
}

.timeline-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.timeline-date {
    color: #0066cc;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.timeline-title {
    color: #333;
    margin: 0 0 0.5rem 0;
    font-size: 1.4rem;
}

.timeline-company {
    color: #666;
    font-weight: 500;
    margin: 0 0 1rem 0;
    font-size: 1rem;
}

.timeline-description {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* Timeline Connector Lines */
.timeline-item {
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    top: 50%;
    height: 1px;
    background-color: #dee2e6;
    z-index: 0;
}

/* Left-aligned items (even) - cards on the left */
.timeline-item:nth-child(even)::before {
    right: 18px;
    left: auto;
    width: 5%;
}

/* Right-aligned items (odd) - cards on the right */
.timeline-item:nth-child(odd)::before {
    left: 18px;
    right: auto;
    width: 5%;
}

/* Ensure cards are above the connector lines */
.timeline-card {
    position: relative;
    z-index: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        padding: 0 0 0 50px;
        text-align: left;
    }
    
    .timeline-item::after {
        left: 12px;
    }
}

/* Footer Styles */
.site-footer {
    background-color: #333;
    color: #fff;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
    font-size: 0.95rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-section {
    text-align: center;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: #fff;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.contact-list a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-list a:hover {
    color: #4dabf7;
    text-decoration: none;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 2rem;
}

.footer-bottom {
    position: relative;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 2rem;
}

.footer-bottom p {
    margin: 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.back-to-top {
    position: absolute;
    right: 0;
    top: -20px;
    width: 40px;
    height: 40px;
    background-color: #4dabf7;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.back-to-top:hover {
    background-color: #339af0;
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

/* Certificates Section */
.certificates-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-size: 2.5rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #5d9cec, #4a89dc);
    border-radius: 2px;
}

.certificate {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(93, 156, 236, 0.1);
    margin-bottom: 3rem;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e6f0fb;
}

.certificate:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(93, 156, 236, 0.15);
}

.certificate-title {
    background: linear-gradient(135deg, #f8fafd, #eef5ff);
    color: #2c3e50;
    margin: 0;
    padding: 1.2rem 2rem;
    font-size: 1.5rem;
    font-weight: 600;
    border-bottom: 1px solid #e1ecfb;
    border-left: 4px solid #5d9cec;
}

.certificate-content {
    display: flex;
    flex-wrap: wrap;
    padding: 2rem;
}

.certificate-image-container {
    flex: 1 1 45%;
    min-width: 300px;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.certificate-image {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(93, 156, 236, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e1ecfb;
    background: white;
    padding: 4px;
}

.certificate-image:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 16px rgba(93, 156, 236, 0.2);
    border-color: #c6d9f1;
}

.certificate-details {
    flex: 1 1 50%;
    padding: 1rem 2rem;
}

.certificate-summary {
    color: #555;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.key-points {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.key-points li {
    background: #f8fafd;
    margin: 0.7rem 0;
    padding: 0.8rem 1.2rem;
    border-radius: 6px;
    border-left: 4px solid #5d9cec;
    transition: all 0.2s ease;
}

.key-points li:hover {
    transform: translateX(5px);
    background: #f0f7ff;
    box-shadow: 0 2px 6px rgba(93, 156, 236, 0.1);
}

.key-points strong {
    color: #2c3e50;
    font-weight: 600;
}

.certificate-placeholder {
    width: 100%;
    height: 250px;
    background: #f0f4f8;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #7f8c8d;
    border-radius: 8px;
    border: 2px dashed #bdc3c7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .certificate-content {
        flex-direction: column;
        padding: 1.5rem;
    }
    
    .certificate-image-container,
    .certificate-details {
        flex: 1 1 100%;
        padding: 0.5rem 0;
    }
    
    .certificate-title {
        font-size: 1.3rem;
        padding: 1rem;
    }
}

/* Animation for list items */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.certificate {
    animation: fadeInUp 0.6s ease-out forwards;
}

.certificate:nth-child(2) { animation-delay: 0.1s; }
.certificate:nth-child(3) { animation-delay: 0.2s; }

/* PDF Viewer Styles */
.resume-container {
    padding: 1rem;
    max-width: 1000px;
    margin: 0 auto;
    min-height: calc(100vh - 200px);
    display: flex;
    flex-direction: column;
}

.pdf-container {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin: 0 auto;
    width: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
}

#pdf-iframe {
    width: 100%;
    flex: 1;
    border: none;
    min-height: 0;
}

.download-container {
    text-align: center;
    padding: 1.5rem;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #2c3e50;
    color: white;
    text-decoration: none;
    padding: 0.7rem 1.5rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    font-size: 0.95rem;
}

.download-btn:hover {
    background: #34495e;
    transform: translateY(-1px);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    .resume-container {
        padding: 0.5rem;
        min-height: calc(100vh - 160px);
    }
}

.pdf-controls button:hover {
    background: #34495e;
    transform: translateY(-1px);
}

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

.pdf-controls button:disabled {
    background: #95a5a6;
    cursor: not-allowed;
    transform: none;
}

/* Job Experience Styles */
.job-experience {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 2rem 4rem;
}

.job-header {
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid #f0f2f5;
}

.job-header h1 {
    color: #1a365d;
    margin-bottom: 0.5rem;
    font-size: 2.2rem;
}

.job-header h2 {
    color: #4a5568;
    font-weight: 500;
    margin: 0.5rem 0;
    font-size: 1.3rem;
}

.job-meta {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
    color: #718096;
    font-size: 0.95rem;
}

.job-meta span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.job-summary {
    margin: 2rem 0 3rem;
    line-height: 1.7;
    color: #2d3748;
}

.job-summary p {
    margin-bottom: 1.2rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

.skills-section {
    margin: 3rem 0;
}

.skills-section h3 {
    color: #2d3748;
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid #e2e8f0;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.skill-category {
    background: #ffffff;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.skill-category:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.skill-category h4 {
    color: #2b6cb0;
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e2e8f0;
}

.skill-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.skill-category li {
    padding: 0.4rem 0;
    color: #4a5568;
    position: relative;
    padding-left: 1.2rem;
    line-height: 1.5;
}

.skill-category li:before {
    content: '•';
    color: #4299e1;
    font-weight: bold;
    display: inline-block;
    width: 1em;
    margin-left: -1em;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .job-experience {
        padding: 1.5rem 1.25rem 3rem;
    }
    
    .job-header h1 {
        font-size: 1.8rem;
    }
    
    .job-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

/* Course List Styles */
.course-list {
    list-style: none;
    padding: 0;
    max-width: 900px;
    margin: 0;
}

.course-item {
    margin-bottom: 10px;
    border-left: 3px solid #4a90e2;
    padding-left: 15px;
    transition: background-color 0.3s ease;
    border-radius: 4px;
}

.course-item:hover {
    background-color: #f1f5f9;
}

.course-item summary {
    font-weight: 600;
    cursor: pointer;
    padding: 8px 0;
    color: #2c3e50;
    transition: color 0.2s;
}

.course-item summary:hover {
    color: #1a73e8;
}

.course-item .description {
    margin-top: 5px;
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 4px;
    font-size: 0.95em;
    line-height: 1.5;
}

.degree-section {
    margin-bottom: 40px;
}

.degree-section h3 {
    color: #1a73e8;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 8px;
    margin-top: 30px;
}

.thesis {
    background-color: #f0f7ff;
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
    border-left: 4px solid #4a90e2;
}

.thesis h3 {
    margin-top: 0;
    color: #1a73e8;
}

.courses-section {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
    border-left: 4px solid #6c757d;
}

.courses-section summary {
    font-size: 1.2rem;
    font-weight: 600;
    color: #495057;
    cursor: pointer;
}

.courses-section summary:hover {
    text-decoration: underline;
}

#pdf-canvas {
    display: block;
    margin: 0 auto;
    width: 100% !important;
    height: auto !important;
    max-width: 100%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.download-container {
    text-align: center;
    padding: 1.5rem;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #2c3e50;
    color: white;
    text-decoration: none;
    padding: 0.7rem 1.5rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
}

.download-btn:hover {
    background: #34495e;
    transform: translateY(-1px);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.download-btn:active {
    transform: translateY(0);
}

/* Hide button text on small screens, keep icon */
@media (max-width: 480px) {
    .button-text {
        display: none;
    }
    
    .pdf-controls {
        gap: 1rem;
        padding: 0.8rem;
    }
    
    .page-info {
        font-size: 0.9rem;
        margin: 0 0.5rem;
    }
}

.back-to-top:active {
    transform: translateY(-1px);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .contact-list {
        flex-direction: column;
        gap: 1rem;
    }
    
    .footer-section {
        margin-bottom: 1.5rem;
    }
}