/* Enhanced Global Styles */
body {
    padding: 0;
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Vedana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

/* Enhanced Footer */
footer {
    background: linear-gradient(135deg, #0055c2 0%, #003d9a 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.03)"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

/* Enhanced Header */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.05) 50%, transparent 70%);
    animation: shimmer 3s infinite;
    pointer-events: none;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

header .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

.logo {
    display: block;
    margin: 0 auto;
    width: auto;
    height: 320px;
    max-width: 320px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

/* Enhanced Typography */
h1 {
    color: rgba(255, 255, 255, 0.95);
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

h2 {
    color: #2c3e50;
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #0055c2, #64ffda);
    border-radius: 2px;
}

h3 {
    color: #34495e;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Enhanced Sections */
section {
    background: none;
    padding: 3rem 1.5rem;
    border-radius: 0;
    box-shadow: none;
    position: relative;
    overflow: hidden;
}

section:nth-child(even) {
    background: rgba(255, 255, 255, 0.02);
}

section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.05) 50%, transparent 100%);
    pointer-events: none;
}

.section-content {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    padding: 0.6rem 0.8rem;
    margin: 0.4rem 0;
    box-sizing: border-box;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 85, 194, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.section-content:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 85, 194, 0.12);
}

.section-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0055c2 0%, #64ffda 50%, #4fc3f7 100%);
    border-radius: 16px 16px 0 0;
}

/* Enhanced Navigation Styles */
nav {
    background: linear-gradient(135deg, #0055c2 0%, #003d9a 100%);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 85, 194, 0.3);
    backdrop-filter: blur(10px);
}

.enhanced-nav {
    transition: all 0.3s ease;
}

.navBarContent {
    padding: 0.8em 1em;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.navbar-toggler {
    border: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 0.5rem;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='m4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    filter: none;
}

.nav-items-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin: 0 auto;
}

.nav-item {
    color: #ffffff !important;
    text-decoration: none !important;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.6rem 1rem !important;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: flex !important;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    min-width: 90px;
    text-align: center;
}

.nav-item:hover {
    color: #ffffff !important;
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 85, 194, 0.4);
}

.nav-item.active {
    background: rgba(255, 255, 255, 0.25);
    color: #ffffff !important;
    transform: scale(1.05);
}

.nav-item.active .nav-text {
    font-weight: 600;
}

.nav-item i {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.nav-item:hover i {
    transform: scale(1.2);
}

.nav-text {
    font-size: 0.8rem;
    white-space: nowrap;
    transition: font-weight 0.3s ease;
}

.nav-indicator {
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, #64ffda 0%, #4fc3f7 100%);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.nav-item.active .nav-indicator,
.nav-item:hover .nav-indicator {
    width: 80%;
}

.contact-nav {
    background: rgba(255, 255, 255, 0.15) !important;
    font-weight: 600 !important;
}

.contact-nav:hover {
    background: rgba(255, 255, 255, 0.3) !important;
}

/* Scroll to top button */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0055c2 0%, #003d9a 100%);
    border: none;
    color: white;
    font-size: 1.2rem;
    box-shadow: 0 4px 20px rgba(0, 85, 194, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
}

.scroll-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 85, 194, 0.6);
    background: linear-gradient(135deg, #0070f3 0%, #005bb5 100%);
}

.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
}

/*!* Mobile Navigation Improvements *!*/
/*@media (max-width: 991.98px) {*/
/*    .nav-items-container {*/
/*        flex-direction: column;*/
/*        width: 100%;*/
/*        padding: 1rem 0;*/
/*        gap: 0.5rem;*/
/*    }*/
/*    */
/*    .nav-item {*/
/*        width: 90%;*/
/*        margin: 0;*/
/*        min-width: auto;*/
/*    }*/
/*    */
/*    .navbar-collapse {*/
/*        background: rgba(0, 85, 194, 0.95);*/
/*        backdrop-filter: blur(15px);*/
/*        border-radius: 12px;*/
/*        margin: 0.5rem;*/
/*        box-shadow: 0 8px 32px rgba(0, 85, 194, 0.3);*/
/*    }*/
/*}*/

/* Enhanced Responsive Design */
@media (max-width: 768px) {
    header {
        min-height: 70vh;
        padding: 2rem 1rem;
    }

    h1 {
        font-size: 2.2rem;
    }

    .ck {
        height: 200px;
        max-width: 200px;
    }

    .logo {
        height: 250px;
        max-width: 250px;
    }

    .section-content {
        padding: 0.6rem 0.8rem;
        margin: 0.4rem 0;
    }

    .entry {
        flex-direction: column;
        gap: 0.5rem;
        padding: 0.5rem 0.6rem;
    }

    .left-col, .right-col-rev {
        flex: none;
        width: 100%;
        min-width: auto;
    }

    .left-col-rev, .right-col {
        flex: none;
        width: 100%;
        padding-right: 0;
        text-align: left;
    }

    .right-col-rev {
        align-items: flex-start !important;
    }

    .year-section h3 {
        font-size: 1.2rem;
        padding: 0.5rem 0.8rem;
        margin-bottom: 0.6rem;
    }

    .publication {
        font-size: 0.85em;
    }

    .status-accepted, .status-under_preparation, .status-to_submit {
        font-size: 0.75rem;
        padding: 0.2rem 0.5rem;
        margin-top: 0.3rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    h3 {
        font-size: 1.4rem;
    }

    .scroll-to-top {
        width: 45px;
        height: 45px;
        bottom: 1.5rem;
        right: 1.5rem;
    }
}

@media (max-width: 576px) {
    header {
        min-height: 60vh;
    }

    h1 {
        font-size: 2rem;
    }

    .logo {
        height: 180px;
        max-width: 180px;
    }

    .section-content {
        padding: 1rem;
    }

    .entry {
        padding: 1rem;
    }

    h2 {
        font-size: 1.6rem;
    }

    .nav-item .nav-text {
        font-size: 0.7rem;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
        color: #e2e8f0;
    }
    
    .section-content {
        background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    .entry {
        background: rgba(45, 55, 72, 0.9);
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    h2 {
        color: #e2e8f0;
    }
    
    .title {
        color: #e2e8f0;
    }
    
    .institution {
        color: #a0aec0;
    }
    
    .details {
        color: #cbd5e0;
    }
}

/* Loading animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-content {
    animation: fadeInUp 0.6s ease-out;
}

.section-content:nth-child(2n) {
    animation-delay: 0.1s;
}

.section-content:nth-child(3n) {
    animation-delay: 0.2s;
}

/* Enhanced accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .logo:hover {
        transform: none;
    }
    
    .entry:hover {
        transform: none;
    }
    
    .nav-item:hover {
        transform: none;
    }
    
    .button:hover {
        transform: none;
    }
    
    .section-content:hover {
        transform: none;
    }
}

/* Focus enhancements for keyboard navigation */
*:focus {
    outline: 2px solid #0055c2;
    outline-offset: 2px;
}

/* Print styles */
@media print {
    nav, .scroll-to-top {
        display: none;
    }
    
    .section-content {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .entry:hover {
        transform: none;
        box-shadow: none;
    }
    
    body {
        background: white;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading states */
body.loading {
    opacity: 0;
    transition: opacity 0.5s ease;
}

body.loaded {
    opacity: 1;
}

img.lazy {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img:not(.lazy) {
    opacity: 1;
}

/* Enhanced focus styles for accessibility */
.nav-item:focus {
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

.scroll-to-top:focus {
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 20px;
}

.sidebar {
    background-color: #005dd2;
    padding: 20px;
    width: 200px;
    color: white;
    border-radius: 1em;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 1);
}

/* Enhanced Button Styling */
.button {
    color: #ffffff !important;
    font-size: larger;
    font-weight: 600;
    background: linear-gradient(135deg, #0055c2 0%, #003d9a 100%);
    padding: 0.7rem 1.2rem;
    margin: 0 1em;
    box-sizing: border-box;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 85, 194, 0.3);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    position: relative;
    overflow: hidden;
}

.button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 85, 194, 0.4);
    background: linear-gradient(135deg, #0070f3 0%, #005bb5 100%);
}

.button:hover::before {
    left: 100%;
}

/* Link enhancements */
a {
    color: #0055c2;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #003d9a;
}

/* Enhanced publication status */
.status-accepted {
    color: #10b981;
    font-weight: 600;
    background: rgba(16, 185, 129, 0.1);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
}

.status-under_preparation {
    color: #f59e0b;
    font-weight: 600;
    background: rgba(245, 158, 11, 0.1);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
}

.status-to_submit {
    color: #6b7280;
    font-style: italic;
    background: rgba(107, 114, 128, 0.1);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: 5%;
    padding-right: 5%;
    padding-top: 1em;
    color:white;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icon {
    font-size: xx-large;
    color: white;
}

/* Header quick social icons styling */
header .social-icons {
    justify-content: center;
    margin-top: 0.5rem;
}

header .social-icon {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 10px;
    padding: 0.35rem 0.6rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, background 0.2s ease;
}

header .social-icon:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.3);
}

/* Normalize Google Scholar image icon to match font icons */
header .social-icon img {
    width: 26px;
    height: 26px;
    display: block;
}

.copyright {
    color: white;
}

/* Enhanced Entry Styling */
.entry {
    display: flex;
    gap: 0.6rem;
    padding: 0.5rem 0.6rem;
    margin: 0.2rem 0;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 6px;
    box-shadow: 0 1px 4px rgba(0, 85, 194, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(5px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    align-items: flex-start;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.entry:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 85, 194, 0.15);
    background: rgba(255, 255, 255, 0.95);
}

.entry::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, #0055c2 0%, #64ffda 100%);
    transition: width 0.3s ease;
}

.entry:hover::before {
    width: 8px;
}

.year-section {
    margin: 0.8rem 0;
    padding-left: 0.3rem;
    border-left: 2px solid rgba(30, 64, 175, 0.2);
}

.year-section h3 {
    color: #ffffff;
    background: linear-gradient(135deg, #0055c2 0%, #0043a8 100%);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    padding: 0.4rem 0.7rem;
    border-radius: 6px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    box-shadow: 0 1px 4px rgba(0, 85, 194, 0.2);
    border-bottom: none;
}

.left-col {
    flex: 0 0 120px;
    width: 120px;
    font-weight: bold;
    color: #1e40af;
    font-size: 0.9rem;
}

.right-col {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding-right: 0.3rem;
}

.right-col-rev {
    flex: 0 0 120px;
    width: 120px;
    color: #1e40af;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    align-items: flex-end;
}

.left-col-rev {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding-right: 0.3rem;
}

.title {
    font-size: 1.1em;
    font-weight: bold;
    color: #333;
}

.institution {
    font-style: italic;
    color: #666;
}

.details {
    font-size: 0.9em;
    color: #374151;
    line-height: 1.4;
}

.date {
    min-width: 120px;
    font-weight: 500;
    color: #1e40af;
    font-size: 0.9rem;
}

.title {
    min-width: 90px;
    font-weight: bold;
    color: #1e40af;
    font-size: 0.95rem;
}

.subtitle {
    min-width: 120px;
    font-weight: 500;
    color: #2563eb;
    font-size: 0.85rem;
}

.details {
    flex: 1;
}

.school {
    margin: 0;
    font-weight: 500;
    color: #222;
}

.grade {
    margin: 0.3em 0 0;
    font-size: 0.95rem;
    color: #444;
}

.publication {
    font-size: 0.9em;
    color: #1a1a1a;
    font-weight: normal;
    line-height: 1.4;
}

.publication .paper-authors {
    font-weight: normal;
    color: #2c3e50;
    margin-bottom: 0.2rem;
}

.publication .paper-title {
    font-weight: 600;
    font-style: italic;
    color: #1a365d;
    margin-top: 0.1rem;
}

.status-accepted {
    color: #ffffff;
    font-weight: 600;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    box-shadow: 0 1px 3px rgba(16, 185, 129, 0.2);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.status-under_preparation {
    color: #ffffff;
    font-weight: 600;
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    box-shadow: 0 1px 3px rgba(245, 158, 11, 0.2);





    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.status-to_submit {
    color: #ffffff;
    font-style: italic;
    background: linear-gradient(135deg, #6b7280 0%, #4b5563 100%);
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    box-shadow: 0 1px 3px rgba(107, 114, 128, 0.2);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}