:root {
    /* Global Settings */
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    --border-radius-lg: 20px;
    --border-radius-md: 12px;
    --border-radius-sm: 8px;
    --transition-speed: 0.3s;
    --cubic-bezier: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Dark Theme (Default) */
    --bg-primary: hsl(224, 25%, 8%);
    --bg-secondary: hsl(224, 25%, 12%);
    --bg-tertiary: hsl(224, 25%, 16%);
    --text-primary: hsl(210, 40%, 98%);
    --text-secondary: hsl(215, 20%, 65%);
    --accent-primary: hsl(262, 80%, 70%);
    --accent-hover: hsl(262, 80%, 78%);
    --accent-emerald: hsl(142, 70%, 45%);
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow: 0 10px 30px -15px rgba(2, 2, 5, 0.7);
    --glass-bg: rgba(15, 22, 36, 0.6);
    --glass-border: rgba(255, 255, 255, 0.05);
}

[data-theme="light"] {
    /* Light Theme */
    --bg-primary: hsl(210, 20%, 95%);
    --bg-secondary: hsl(0, 0%, 100%);
    --bg-tertiary: hsl(210, 20%, 98%);
    --text-primary: hsl(224, 25%, 12%);
    --text-secondary: hsl(220, 15%, 45%);
    --accent-primary: hsl(262, 80%, 55%);
    --accent-hover: hsl(262, 80%, 45%);
    --accent-emerald: hsl(142, 76%, 36%);
    --border-color: rgba(0, 0, 0, 0.08);
    --shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.1);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.05);
}

/* RESET & BASE STYLES */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color var(--transition-speed), color var(--transition-speed);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* SCROLLBAR */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--border-radius-sm);
}

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

/* LAYOUT CONTAINER */
.portfolio-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 40px;
    max-width: 1240px;
    margin: 0 auto;
    padding: 60px 20px;
    position: relative;
}

/* SIDEBAR STYLES */
.sidebar {
    position: sticky;
    top: 40px;
    height: calc(100vh - 80px);
    display: flex;
    flex-direction: column;
    gap: 25px;
    overflow-y: auto;
    scrollbar-width: none; /* Firefox */
}

.sidebar::-webkit-scrollbar {
    display: none; /* Safari & Chrome */
}

.profile-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 30px 24px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform var(--transition-speed) var(--cubic-bezier), border-color var(--transition-speed);
}

.profile-card:hover {
    border-color: rgba(99, 102, 241, 0.2);
}

.profile-img-container {
    position: relative;
    width: 220px;
    height: 290px;
    margin: 0 auto 16px;
    border-radius: 18px;
    overflow: hidden;
    border: 3px solid var(--border-color);
    transition: transform var(--transition-speed) var(--cubic-bezier), border-color var(--transition-speed);
}

.profile-img-container:hover {
    transform: scale(1.02);
    border-color: var(--accent-primary);
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

/* Profile image caption */
.profile-img-caption {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.45;
    padding: 4px 8px 0;
    text-align: center;
    font-weight: 500;
    font-style: italic;
    max-width: 250px;
    margin: 0 auto 12px;
}

.profile-name {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 6px;
}

.profile-title {
    font-size: 0.95rem;
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: 15px;
    letter-spacing: -0.01em;
}

.profile-affiliation, .profile-location {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 6px;
}

.profile-affiliation i, .profile-location i {
    font-size: 0.9rem;
    color: var(--text-secondary);
    width: 14px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.25rem;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    text-decoration: none;
    transition: all 0.25s var(--cubic-bezier);
}

.social-links a:hover {
    color: #fff;
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
}

/* HF Custom icon wrapper */
.hf-icon {
    font-size: 1.1rem;
    line-height: 1;
}

.cv-download-container {
    margin-top: 24px;
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s var(--cubic-bezier);
    border: none;
    outline: none;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #fff;
    width: 100%;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.4);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--border-color);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-xs {
    padding: 6px 12px;
    font-size: 0.75rem;
    border-radius: 6px;
}

/* NAVIGATION (SCROLLSPY) */
.sidebar-nav {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 16px;
    box-shadow: var(--shadow);
}

.sidebar-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--border-radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s var(--cubic-bezier);
}

.nav-link i {
    width: 16px;
    font-size: 0.95rem;
    text-align: center;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

.nav-link.active {
    color: var(--accent-primary);
    font-weight: 600;
    border-left: 3px solid var(--accent-primary);
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
    padding-left: 11px;
}

/* MAIN CONTENT PANEL */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

/* SECTIONS */
.content-section {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow);
    scroll-margin-top: 40px;
    transition: transform var(--transition-speed) var(--cubic-bezier), border-color var(--transition-speed);
}

.content-section:hover {
    border-color: rgba(99, 102, 241, 0.15);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 24px;
    position: relative;
    display: inline-block;
    padding-bottom: 8px;
    letter-spacing: -0.02em;
}

.section-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 45px;
    height: 3px;
    background-color: var(--accent-primary);
    border-radius: 2px;
}

/* BIO CARD (ABOUT) */
.bio-card {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.bio-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
}

.interests-list {
    list-style: none;
    margin: 10px 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.interests-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

.interests-list li i {
    color: var(--accent-primary);
    font-size: 1.1rem;
    margin-top: 3px;
}

.contact-notice {
    background-color: var(--bg-tertiary);
    border-left: 4px solid var(--accent-primary);
    padding: 16px 20px;
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
    font-size: 0.9rem;
    margin-top: 10px;
}

kbd {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 2px 6px;
    font-size: 0.8rem;
    font-family: monospace;
    font-weight: 600;
}

/* EDUCATION CARD */
.education-card {
    border-left: 3px solid var(--accent-emerald);
    padding-left: 20px;
    margin-top: 10px;
}

.education-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 14px;
}

.education-info h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.3;
}

.institution {
    font-size: 0.95rem;
    color: var(--text-secondary);
    display: block;
    margin-top: 4px;
}

.education-date {
    font-size: 0.9rem;
    color: var(--accent-emerald);
    font-weight: 700;
}

.education-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.education-gpa {
    font-size: 0.95rem;
}

.badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 20px;
}

.badge-distinction {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--accent-emerald);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.education-thesis, .education-advisor {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* PUBLICATIONS SECTION */
.publications-filter {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.filter-btn {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s var(--cubic-bezier);
}

.filter-btn.active, .filter-btn:hover {
    background-color: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
}

.publications-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.pub-item {
    display: flex;
    gap: 20px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 20px;
    transition: transform var(--transition-speed) var(--cubic-bezier), border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.pub-item:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow);
}

.pub-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #fff;
    padding: 6px 10px;
    border-radius: 6px;
    min-width: 32px;
    text-align: center;
}

.pub-item[data-category="journal"] .pub-badge {
    background-color: var(--accent-emerald);
}

.pub-item[data-category="conference"] .pub-badge {
    background-color: var(--accent-primary);
}

.pub-item[data-category="workshop"] .pub-badge {
    background-color: hsl(35, 85%, 45%);
}

.pub-content {
    flex: 1;
}

.pub-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.pub-authors {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.pub-venue {
    font-size: 0.85rem;
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.pub-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.pub-tags .badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 6px;
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--accent-emerald);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-primary {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: hsl(35, 85%, 50%);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-info {
    background-color: rgba(14, 165, 233, 0.1);
    color: hsl(199, 89%, 48%);
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.badge-secondary {
    background-color: rgba(100, 116, 139, 0.1);
    color: var(--text-secondary);
    border: 1px solid rgba(100, 116, 139, 0.2);
}

.badge-light {
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

/* EXPERIENCE TIMELINE */
.timeline {
    position: relative;
    padding-left: 24px;
    margin-top: 10px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -24px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    border: 3px solid var(--accent-primary);
    z-index: 2;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
}

.timeline-item:hover .timeline-dot {
    background-color: var(--accent-primary);
    transform: scale(1.25);
}

.timeline-date {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 6px;
    text-transform: uppercase;
}

.timeline-content {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 20px;
    transition: transform var(--transition-speed) var(--cubic-bezier), border-color var(--transition-speed);
}

.timeline-item:hover .timeline-content {
    border-color: rgba(99, 102, 241, 0.25);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 6px;
}

.role-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
}

.org-name {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-primary);
}

.location-tag {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 12px;
}

.details-list {
    list-style: none;
    padding: 0;
}

.details-list li {
    position: relative;
    padding-left: 18px;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.details-list li:last-child {
    margin-bottom: 0;
}

.details-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
}

/* RECENT NEWS TIMELINE */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-height: 400px;
    overflow-y: auto;
    padding-right: 8px;
}

.news-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.news-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.news-date {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--accent-primary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 6px;
    white-space: nowrap;
    text-transform: uppercase;
}

.news-content {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-primary);
}

.news-content strong {
    font-weight: 600;
}

/* PROJECTS GRID */
.subsection-title {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 18px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.subsection-title i {
    color: var(--accent-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.project-card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 12px;
    transition: transform var(--transition-speed) var(--cubic-bezier), border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.project-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow);
}

.project-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
}

.project-card-header h4 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
}

.project-external-link {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color 0.2s;
}

.project-external-link:hover {
    color: var(--accent-primary);
}

.project-desc {
    font-size: 0.85rem;
    line-height: 1.55;
    color: var(--text-secondary);
    flex-grow: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.project-tech span {
    font-size: 0.7rem;
    font-weight: 600;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 4px;
}

.project-links {
    display: flex;
    gap: 8px;
    margin-top: 4px;
}

/* ACHIEVEMENTS GRID */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.achievement-card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 16px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
    transition: transform var(--transition-speed) var(--cubic-bezier), border-color var(--transition-speed);
}

.achievement-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-emerald);
}

.achievement-card.highlight {
    border-left: 3px solid var(--accent-emerald);
}

.achievement-icon {
    font-size: 1.25rem;
    color: var(--accent-emerald);
    margin-top: 2px;
}

.achievement-content {
    flex: 1;
}

.achievement-content h4 {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.35;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.achievement-org {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
    line-height: 1.3;
}

.achievement-year {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-emerald);
}

/* SKILLS GRID */
.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.skill-category-card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 20px;
}

.skill-category-card h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 14px;
    color: var(--accent-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s var(--cubic-bezier);
}

.skill-tag i {
    font-size: 0.95rem;
}

.skill-tag:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-1px);
}

/* EXTRA CURRICULARS & ACTIVITIES */
.activities-card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 24px;
}

.activities-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.activities-list li {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.activities-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.activity-icon {
    font-size: 1.4rem;
    color: var(--accent-primary);
    margin-top: 2px;
}

.activity-content {
    flex: 1;
}

.activity-content strong {
    font-family: var(--font-heading);
    display: block;
    font-size: 1.05rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.activity-role {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-emerald);
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 3px 10px;
    border-radius: 4px;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.activity-link-container {
    display: inline-block;
    margin-bottom: 10px;
}

.media-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #fff;
    background-color: hsl(0, 75%, 50%);
    padding: 4px 10px;
    border-radius: 4px;
    text-decoration: none;
    transition: background-color 0.2s var(--cubic-bezier);
}

.media-link:hover {
    background-color: hsl(0, 75%, 40%);
}

.activity-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.55;
}

/* FLOATING CONTROLS */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: var(--shadow);
    transition: transform var(--transition-speed) var(--cubic-bezier), background-color var(--transition-speed);
}

.theme-toggle:hover {
    transform: scale(1.1);
    border-color: var(--accent-primary);
}

[data-theme="dark"] #theme-toggle .fa-moon {
    display: none;
}

[data-theme="dark"] #theme-toggle .fa-sun {
    display: block;
}

[data-theme="light"] #theme-toggle .fa-sun {
    display: none;
}

[data-theme="light"] #theme-toggle .fa-moon {
    display: block;
}

.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    border: none;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s var(--cubic-bezier);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
}

/* PRINT MEDIA STYLES (PRINTER FRIENDLY INTERCEPT) */
@media print {
    body {
        background-color: #fff !important;
        color: #000 !important;
        font-size: 10pt;
    }
    
    .portfolio-container {
        display: block;
        padding: 0;
    }
    
    .sidebar {
        display: block;
        position: relative;
        top: 0;
        height: auto;
    }
    
    .profile-card {
        border: none;
        box-shadow: none;
        padding: 0;
        margin-bottom: 20px;
        text-align: left;
    }
    
    .profile-img-container, .profile-img-caption, .sidebar-nav, .theme-toggle, .scroll-to-top, .cv-download-container, .publications-filter {
        display: none !important;
    }
    
    .social-links {
        justify-content: flex-start;
        margin-top: 10px;
    }
    
    .social-links a {
        border: none;
        background: none;
        width: auto;
        height: auto;
        padding-right: 15px;
        color: #000 !important;
    }
    
    .main-content {
        display: block;
    }
    
    .content-section {
        border: none;
        box-shadow: none;
        padding: 0;
        margin-bottom: 30px;
        page-break-inside: avoid;
    }
    
    .section-title {
        font-size: 1.4rem;
        margin-bottom: 15px;
    }
    
    .pub-item, .timeline-content, .project-card, .achievement-card, .skill-category-card, .activities-card {
        background: none !important;
        border: none !important;
        padding: 0 !important;
        margin-bottom: 15px !important;
        box-shadow: none !important;
    }
    
    .pub-badge {
        display: none !important;
    }
    
    .project-links, .btn {
        display: none !important;
    }
    
    .news-list {
        max-height: none !important;
        overflow: visible !important;
    }
}

/* RESPONSIVENESS */
@media (max-width: 1024px) {
    .portfolio-container {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 40px 15px;
    }
    
    .sidebar {
        position: relative;
        top: 0;
        height: auto;
        gap: 20px;
    }
    
    .sidebar-nav {
        display: none; /* Hide on mobile/tablet as sidebar profile elements stack */
    }
}

@media (max-width: 768px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
}

@media (max-width: 480px) {
    .content-section {
        padding: 24px 16px;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .pub-item {
        flex-direction: column;
        gap: 12px;
    }
    
    .pub-badge {
        writing-mode: horizontal-tb;
        transform: none;
        display: inline-block;
        max-width: 100px;
        padding: 4px 8px;
    }
}