@import url('https://fonts.googleapis.com/css2?family=Lato:wght@400;700&family=Nunito+Sans:wght@600;700;800&display=swap');

/* Light Theme (Default) */
:root {
    /* Gradient colors */
    --gradient-start: #4f7ea8;
    --gradient-end: #3f6f87;
    --gradient-accent: #8fb3c9;
    --gradient-secondary: #6ca6c1;
    --nav-gradient-start: #6f9fbe;
    --nav-gradient-end: #5a87a5;
    --heading-gradient-start: #3d7fb0;
    --heading-gradient-end: #4c8f8d;
    --heading-pill-bg: #edf4f8;
    --heading-pill-text: #2f5d79;
    --heading-pill-border: #c7d8e4;

    /* Background colors */
    --bg-primary: #ffffff;
    --bg-secondary: #edf2f7;
    --bg-tertiary: #dce6f0;

    /* Text colors */
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;

    /* Card colors */
    --card-bg: #ffffff;
    --card-shadow: rgba(0, 0, 0, 0.1);
    --card-hover-shadow: rgba(79, 126, 168, 0.28);

    /* Border colors */
    --border-color: #e2e8f0;

    /* Button gradients */
    --btn-gradient-start: #4f7ea8;
    --btn-gradient-end: #3f6f87;
    --social-icon-color: #3f6f87;
}

/* Dark Theme */
[data-theme="dark"] {
    /* Gradient colors - slightly adjusted for dark mode */
    --gradient-start: #5a7c95;
    --gradient-end: #446275;
    --gradient-accent: #7f9fb6;
    --gradient-secondary: #5b8ea9;
    --nav-gradient-start: #3e5668;
    --nav-gradient-end: #334857;
    --heading-gradient-start: #7fc2e6;
    --heading-gradient-end: #67c6b4;
    --heading-pill-bg: #2f4152;
    --heading-pill-text: #c8deed;
    --heading-pill-border: #41586b;

    /* Background colors */
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --bg-tertiary: #4a5568;

    /* Text colors */
    --text-primary: #e7eef5;
    --text-secondary: #c6d3df;
    --text-muted: #97a8b8;

    /* Card colors */
    --card-bg: #2f3d50;
    --card-shadow: rgba(0, 0, 0, 0.22);
    --card-hover-shadow: rgba(95, 130, 152, 0.24);

    /* Border colors */
    --border-color: #42556a;

    /* Button gradients */
    --btn-gradient-start: #5a7c95;
    --btn-gradient-end: #446275;
    --social-icon-color: #f8fafc;
}

[data-theme="dark"] .main-content > section + section {
    border-top-color: rgba(198, 211, 223, 0.18);
}

[data-theme="dark"] .card {
    border-color: rgba(198, 211, 223, 0.12) !important;
}

[data-theme="dark"] .list-group-item {
    border-color: rgba(198, 211, 223, 0.10) !important;
}

[data-theme="dark"] p,
[data-theme="dark"] li {
    line-height: 1.65;
}

/* Global Styles */
body {
    font-family: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary) !important;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Keep page content readable on very wide screens */
body > .container-fluid {
    max-width: 2400px;
    margin-left: auto;
    margin-right: auto;
}

body > .navbar > .container-fluid {
    max-width: 2400px;
    margin-left: auto;
    margin-right: auto;
}

/* Force text colors throughout */
p, li, span, div, a:not(.btn):not(.nav-link):not(.navbar-brand) {
    color: var(--text-secondary);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Nunito Sans', 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
}

.lead {
    color: var(--text-secondary) !important;
}

.footer.bg-light {
    background-color: #e1e8f0 !important;
    border-top: 1px solid #c9d6e2;
}

.footer .text-muted {
    color: #546579 !important;
}

/* Theme Toggle Button */
.theme-toggle {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.theme-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.theme-toggle i {
    font-size: 1.1rem;
}

/* Navbar Customization */
.navbar-dark.bg-primary {
    background: linear-gradient(135deg, var(--nav-gradient-start) 0%, var(--nav-gradient-end) 100%) !important;
    box-shadow: 0 4px 6px var(--card-shadow);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.25rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-dark .navbar-brand {
    color: rgba(255, 255, 255, 0.92) !important;
}

.navbar-dark .navbar-brand:hover,
.navbar-dark .navbar-brand:focus {
    color: #ffffff !important;
}

/* Align navbar brand with the center of the sidebar area on sidebar pages */
@media (min-width: 768px) {
    body.has-sidebar .navbar .container-fluid {
        position: relative;
    }

    body.has-sidebar .navbar-brand {
        position: absolute;
        left: 12.5%;
        transform: translateX(-50%);
        width: max-content;
        margin-right: 0;
        text-align: center;
        z-index: 2;
    }
}

@media (min-width: 992px) {
    body.has-sidebar .navbar-brand {
        left: 8.333%;
    }
}

.nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
}

.navbar-dark .navbar-nav .nav-link.active,
.navbar-dark .navbar-nav .nav-link[aria-current="page"] {
    color: #ffffff !important;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.35);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: white;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

.nav-link:hover {
    color: #ffffff !important;
    transform: translateY(-2px);
}

/* Sidebar Styles */
.sidebar-left {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: 2rem 1.5rem;
    min-height: calc(100vh - 56px);
    border-right: 1px solid var(--border-color);
    transition: background 0.3s ease;
}

.sidebar-content {
    padding-top: 1rem;
}

.sidebar-content.sticky-top {
    top: 76px;
}

.profile-img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border: 4px solid transparent;
    background: linear-gradient(white, white) padding-box,
                linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) border-box;
    box-shadow: 0 8px 16px var(--card-shadow);
}

.name {
    color: var(--heading-pill-text);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.title {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--text-secondary);
}

.affiliation {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 500;
}

.section-title {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
    border-bottom: 2px solid;
    border-image: linear-gradient(90deg, var(--gradient-start), var(--gradient-end)) 1;
    padding-bottom: 0.5rem;
}

.contact-info a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.contact-info a:hover {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-info i {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-info li {
    color: var(--text-secondary) !important;
}

.social-links .btn {
    width: 60px;
    height: 60px;
    padding: 0;
    border-radius: 10px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--social-icon-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.social-links {
    margin-top: 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.social-links .d-flex {
    justify-content: center;
}

.social-links .btn:hover {
    transform: translateY(-2px);
    background: rgba(127, 127, 127, 0.12);
    color: var(--social-icon-color);
}

.social-links .btn i {
    line-height: 1;
}

/* Main Content Area */
.main-content {
    padding: 2rem 3rem;
}

/* Home page section rhythm: clearer separation between content blocks */
.main-content > section + section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

/* Use custom section spacing instead of utility spacing for talks block */
.main-content .talks-section.mt-5 {
    margin-top: 3rem !important;
}

.section-heading {
    color: var(--heading-pill-text) !important;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.9rem;
    border-radius: 10px;
    border: 1px solid var(--heading-pill-border);
    background: var(--heading-pill-bg);
    box-shadow: 0 1px 2px var(--card-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

/* Bio Section */
.bio-section .card {
    background: var(--card-bg);
    border: none;
    border-left: 4px solid;
    border-image: linear-gradient(180deg, var(--gradient-start), var(--gradient-end)) 1;
    box-shadow: 0 4px 12px var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.bio-section .card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--card-hover-shadow);
}

.bio-section .card-title {
    color: var(--text-primary) !important;
    font-weight: 700;
}

.bio-section .lead {
    color: var(--text-secondary) !important;
    font-size: 1.15rem;
    line-height: 1.6;
}

.bio-section p {
    color: var(--text-secondary) !important;
}

.bio-section .about-cover-carousel {
    position: relative;
    width: 100%;
    height: 240px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.bio-section .about-cover-carousel .about-cover-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.bio-section .about-cover-carousel .about-cover-image.active {
    opacity: 1;
}

.about-cover-dots {
    position: absolute;
    right: 10px;
    bottom: 10px;
    display: flex;
    gap: 6px;
    z-index: 2;
}

.about-cover-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.45);
    border: 1px solid rgba(0, 0, 0, 0.2);
}

.about-cover-dot.active {
    background: rgba(255, 255, 255, 0.95);
}

.useful-links-category {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--heading-pill-text);
    margin: 0 0 0.9rem 0;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--border-color);
}

.useful-links-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
}

.useful-links-list {
    padding-left: 1.25rem;
}

.useful-links-list a {
    color: var(--text-primary);
    text-decoration: none;
}

.useful-links-list a:hover {
    text-decoration: underline;
}

/* Paper Cards */
.paper-card {
    background: var(--card-bg);
    border: none;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    box-shadow: 0 4px 12px var(--card-shadow);
}

.paper-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 18px var(--card-hover-shadow) !important;
}

.paper-card .card-img-top {
    height: 200px;
    object-fit: contain;
    background-color: var(--bg-secondary);
    padding: 0.5rem;
    border-bottom: 3px solid;
    border-image: linear-gradient(90deg, var(--gradient-start), var(--gradient-end)) 1;
}

.beyond-card {
    background: var(--card-bg);
    border: none;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    box-shadow: 0 4px 12px var(--card-shadow);
}

.beyond-card:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: 0 14px 28px var(--card-hover-shadow) !important;
    cursor: pointer;
}

.beyond-card .beyond-image {
    display: block;
    width: 100%;
    height: auto;
    max-width: 100%;
}

.beyond-card .card-body {
    color: var(--text-secondary) !important;
}

.paper-card .card-title {
    color: var(--text-primary) !important;
    font-weight: 600;
    font-size: 1.1rem;
}

.paper-card .card-text {
    color: var(--text-secondary) !important;
}

.paper-card .card-body {
    color: var(--text-secondary) !important;
}

.paper-card .btn-primary {
    background: linear-gradient(135deg, var(--btn-gradient-start), var(--btn-gradient-end));
    border: none;
    font-weight: 500;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.paper-card .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--card-hover-shadow);
}

.paper-card .btn-outline-secondary {
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    background: transparent;
    transition: all 0.3s ease;
}

.paper-card .btn-outline-secondary:hover {
    background: linear-gradient(135deg, var(--gradient-secondary), var(--gradient-accent));
    border: 2px solid transparent;
    color: white;
    transform: translateY(-2px);
}

/* Research Page - Project Sections */
.research-project-section {
    padding: 2rem 0;
}

.project-image {
    border: 3px solid transparent;
    background: linear-gradient(white, white) padding-box,
                linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) border-box;
    border-radius: 12px;
    object-fit: cover;
    max-height: 300px;
    width: 100%;
    box-shadow: 0 4px 12px var(--card-shadow);
}

.project-title {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.project-description {
    color: var(--text-secondary) !important;
    line-height: 1.7;
}

.publications-header {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid;
    border-image: linear-gradient(90deg, var(--gradient-start), var(--gradient-end)) 1;
}

/* Research Cards */
.research-card {
    background: var(--card-bg);
    border: none;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    box-shadow: 0 4px 12px var(--card-shadow);
}

.research-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px var(--card-hover-shadow) !important;
}

.research-card .card-img-top {
    height: 250px;
    object-fit: cover;
    border-bottom: 3px solid;
    border-image: linear-gradient(90deg, var(--gradient-start), var(--gradient-end)) 1;
}

.research-card .card-title {
    color: var(--text-primary) !important;
    font-weight: 600;
    font-size: 1.25rem;
}

.research-card .card-text {
    color: var(--text-secondary) !important;
}

.research-card .card-body {
    color: var(--text-secondary) !important;
}

.research-card .badge {
    background: linear-gradient(135deg, var(--btn-gradient-start), var(--btn-gradient-end)) !important;
    border: none;
}

/* Software Cards */
.software-card {
    background: var(--card-bg) !important;
    border: none;
    border-left: 4px solid;
    border-image: linear-gradient(180deg, var(--gradient-start), var(--gradient-end)) 1;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 12px var(--card-shadow);
}

.software-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px var(--card-hover-shadow) !important;
}

.software-card .card-title {
    color: var(--text-primary) !important;
    font-weight: 600;
}

.software-card .card-text {
    color: var(--text-secondary) !important;
}

.software-card .card-body {
    color: var(--text-secondary) !important;
}

.software-card .badge.bg-secondary {
    background: var(--bg-tertiary) !important;
    color: var(--text-secondary) !important;
}

.software-card .btn-primary {
    background: linear-gradient(135deg, var(--btn-gradient-start), var(--btn-gradient-end));
    border: none;
}

.software-card .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--card-hover-shadow);
}

.software-card .btn-outline-primary {
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
}

.software-card .btn-outline-primary:hover {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border: 2px solid transparent;
    color: white;
}

.software-card .btn-outline-secondary {
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
}

.software-card .btn-outline-secondary:hover {
    background: linear-gradient(135deg, var(--gradient-secondary), var(--gradient-accent));
    border: 2px solid transparent;
    color: white;
}

/* Paper Detail Page Styles */
.paper-detail .paper-title {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 2rem;
    line-height: 1.3;
    margin-bottom: 1.5rem;
}

.paper-detail .paper-authors {
    font-size: 1.1rem;
    color: var(--text-secondary) !important;
    margin-bottom: 0.5rem;
}

.paper-detail .paper-affiliations {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-muted) !important;
}

.paper-detail .paper-publication {
    font-size: 1rem;
    color: var(--text-muted) !important;
    font-style: italic;
}

.paper-detail p {
    color: var(--text-secondary) !important;
}

.paper-detail li {
    color: var(--text-secondary) !important;
}

.paper-detail figure img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 12px var(--card-shadow);
}

.paper-detail figcaption {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-muted) !important;
}

.paper-detail .card-body {
    color: var(--text-secondary) !important;
}

.paper-detail .card-body p {
    color: var(--text-secondary) !important;
}

.paper-detail .card-body ul li {
    color: var(--text-secondary) !important;
}

.paper-detail pre {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 0.75rem;
    border-left: 4px solid;
    border-image: linear-gradient(180deg, var(--gradient-start), var(--gradient-end)) 1;
    overflow-x: auto;
}

.paper-detail code {
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* CV Page Styles */
.cv-section {
    border-left: 3px solid;
    border-image: linear-gradient(180deg, var(--gradient-start), var(--gradient-end)) 1;
    padding-left: 1.5rem;
}

.cv-section-title {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cv-item {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.cv-item:last-child {
    border-bottom: none;
}

.cv-item-title {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.cv-item-institution {
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.cv-item-date {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    white-space: nowrap;
}

.cv-item-details {
    color: var(--text-secondary) !important;
    line-height: 1.6;
}

.cv-item-details li {
    color: var(--text-secondary) !important;
}

.cv-publications {
    line-height: 1.8;
}

.cv-publications li {
    color: var(--text-secondary) !important;
}

.cv-publications a {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    transition: all 0.3s ease;
}

.cv-publications a:hover {
    text-decoration: underline;
}

/* Outdoor Activities Page */
.activity-card {
    background: var(--card-bg);
    border: none;
    border-left: 4px solid;
    border-image: linear-gradient(180deg, var(--gradient-start), var(--gradient-end)) 1;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 12px var(--card-shadow);
}

.activity-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px var(--card-hover-shadow) !important;
}

.activity-card .card-text {
    color: var(--text-secondary) !important;
}

.activity-card .card-body {
    color: var(--text-secondary) !important;
}

.activity-card .card-title {
    color: var(--text-primary) !important;
}

.activity-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
    box-shadow: 0 4px 12px var(--card-hover-shadow);
}

.activity-stats {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    padding: 1rem;
    border-radius: 0.75rem;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.outdoor-photo {
    height: 250px;
    object-fit: cover;
}

.blog-card {
    background: var(--card-bg);
    border: none;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 12px var(--card-shadow);
}

.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 10px 20px var(--card-hover-shadow) !important;
}

.blog-date {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted) !important;
}

.blog-card .card-text {
    color: var(--text-secondary) !important;
}

.blog-card .card-title {
    color: var(--text-primary) !important;
}

/* Footer */
.footer {
    background: var(--bg-secondary) !important;
    border-top: 3px solid;
    border-image: linear-gradient(90deg, var(--gradient-start), var(--gradient-end)) 1;
    transition: background 0.3s ease;
}

.footer .text-muted {
    color: var(--text-muted) !important;
}

.footer p {
    color: var(--text-muted) !important;
}

/* List Styles */
ul li, ol li {
    color: var(--text-secondary) !important;
}

ul, ol {
    color: var(--text-secondary) !important;
}

/* Ensure all links have proper colors */
a:not(.btn):not(.nav-link):not(.navbar-brand) {
    color: var(--text-secondary);
    text-decoration: none;
}

a:not(.btn):not(.nav-link):not(.navbar-brand):hover {
    text-decoration: underline;
}

/* Strong/Bold text */
strong, b {
    color: var(--text-primary) !important;
}

/* Emphasis text */
em, i:not([class*="bi-"]) {
    color: var(--text-secondary) !important;
}

/* Table text */
table {
    color: var(--text-secondary) !important;
}

/* HR separator */
hr {
    border-color: var(--border-color) !important;
    opacity: 1;
}

/* Ensure proper contrast for all text elements */
.container, .row, .col,
[class*="col-"] {
    color: var(--text-secondary);
}

/* Fix Bootstrap bg-light in dark mode */
.bg-light {
    background-color: var(--bg-secondary) !important;
}

/* General Card Styles */
.card {
    background: var(--card-bg) !important;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px var(--card-shadow);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 16px var(--card-shadow);
}

.card-body {
    color: var(--text-secondary);
}

.card-text {
    color: var(--text-secondary) !important;
}

.card-title {
    color: var(--text-primary) !important;
}

.text-muted, .small {
    color: var(--text-muted) !important;
}

.card-footer {
    background: var(--bg-secondary) !important;
    border-top: 1px solid var(--border-color) !important;
}

/* Talks list should inherit themed card background (fixes white rows in dark mode) */
.talks-section .list-group {
    --bs-list-group-bg: transparent;
    --bs-list-group-border-color: var(--border-color);
}

.talks-section .list-group-item {
    background: transparent !important;
    color: var(--text-secondary);
    border-color: var(--border-color);
}

.talks-section .accordion {
    --bs-accordion-bg: var(--card-bg);
    --bs-accordion-border-color: var(--border-color);
    --bs-accordion-active-bg: var(--bg-secondary);
    --bs-accordion-btn-bg: var(--card-bg);
    --bs-accordion-btn-color: var(--text-primary);
    --bs-accordion-active-color: var(--text-primary);
    --bs-accordion-color: var(--text-secondary);
}

.talks-section .accordion-button:not(.collapsed) {
    box-shadow: none;
}

/* Badge Styles */
.badge.bg-primary {
    background: linear-gradient(135deg, var(--btn-gradient-start), var(--btn-gradient-end)) !important;
}

/* Button Styles */
.btn-primary {
    background: linear-gradient(135deg, var(--btn-gradient-start), var(--btn-gradient-end));
    border: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--card-hover-shadow);
}

/* Responsive Adjustments */
@media (max-width: 991.98px) {
    .sidebar-left {
        min-height: auto;
        padding: 1.5rem 1rem;
    }

    .sidebar-content.sticky-top {
        position: relative !important;
        top: 0 !important;
    }

    .profile-img {
        width: 150px;
        height: 150px;
    }

    .main-content {
        padding: 1.5rem 1rem;
    }
}

@media (max-width: 767.98px) {
    .profile-img {
        width: 120px;
        height: 120px;
    }

    .social-links .btn {
        width: 52px;
        height: 52px;
        font-size: 1.9rem;
    }

    .paper-card .card-img-top {
        height: 180px;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .footer,
    .social-links {
        display: none;
    }

    .sidebar-left {
        background-color: white;
    }
}