/* =============================================================
   Neha Hulkund — personal site
   ============================================================= */

/* ---- Base ---- */
*, *::before, *::after { box-sizing: border-box; }

html {
    font-family: 'Lato', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Lato', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 1.5rem;
    font-weight: 500;
    color: #495057;
    background-color: #fff;
    margin: 0;
    padding-top: 3.5rem; /* room for mobile topbar */
}

@media (min-width: 992px) {
    body {
        padding-top: 0;
        padding-left: 21rem;
    }
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 { margin-top: 0; margin-bottom: 0.5rem; color: #212529; }
h1, h6 { text-transform: uppercase; }
h2 {
    font-size: 2.4rem;
    font-weight: 700;
    padding-left: 0.75rem;
    border-left: 4px solid #2c5f8a;
}
h3 { font-size: 1.35rem; font-weight: 600; }
p   { margin-top: 0; margin-bottom: 1rem; font-size: 1.08rem; }
.about-intro p { font-size: inherit; }
ul, ol { margin-top: 0; margin-bottom: 1rem; }

papertitle {
    color: #2c5f8a;
    font-size: 1.1rem;
    font-weight: 700;
    font-family: 'Lato', sans-serif;
}

.author-self {
    font-weight: 700;
    color: #212529;
}

/* ---- Links ---- */
a {
    color: #5f9fbd;
    text-decoration: none;
    background-image: linear-gradient(105deg, rgba(110,210,220,0.75) 0%, #5f9fbd 42%, rgba(74,170,195,0.9) 100%);
    background-position: 0% 100%;
    background-repeat: no-repeat;
    background-size: 0% 2px;
    transition: color 0.25s ease, background-size 0.35s ease, text-shadow 0.25s ease;
}
a:hover, a:focus {
    color: #257891;
    text-decoration: none;
    background-size: 100% 2px;
    text-shadow: 0 0 20px rgba(95,159,189,0.28);
}

/* Override link style for sidebar + social */
#sideNav .navbar-nav .nav-link,
#sideNav .navbar-brand,
#sideNav .email-container a,
.social-icons .social-icon {
    background-image: none !important;
    background-size: auto !important;
    text-shadow: none !important;
}

/* ---- Sidebar / sideNav ---- */
#sideNav {
    background-color: #2c5f8a !important;
    border-right: 1px solid rgba(255, 255, 255, 0.12);
}

/* Override Bootstrap bg-primary everywhere it's used for the navbar */
.bg-primary { background-color: #2c5f8a !important; }
.text-primary { color: #2c5f8a !important; }
.btn-primary { background-color: #2c5f8a; border-color: #2c5f8a; }
.btn-primary:hover { background-color: #1e4a6e; border-color: #1e4a6e; }

#sideNav .navbar-brand {
    cursor: pointer;
}

.navbar-name {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Profile image */
#sideNav .img-profile {
    max-width: 13rem;
    max-height: 13rem;
    border: 0.5rem solid rgba(255,255,255,0.2);
    border-radius: 50%;
    display: block;
    margin: 0 auto;
}

/* Name + links block in sidebar */
.sidebar-identity {
    text-align: center;
    padding: 0 1.2rem 1.5rem;
}
.sidebar-name {
    font-size: 1.75rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 0.6rem;
    letter-spacing: 0.01em;
}
.sidebar-tagline {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.65);
    letter-spacing: 0.03em;
    margin-bottom: 0.8rem;
    font-weight: 500;
    line-height: 1.5;
}

.sidebar-links {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.8);
}
.sidebar-links a {
    color: rgba(255,255,255,0.9) !important;
    background-image: none !important;
    text-shadow: none !important;
}
.sidebar-links a:hover {
    color: #fff !important;
    text-decoration: underline;
}

/* Email below profile (desktop only) */
.email-container {
    display: none;
    text-align: center;
    padding: 4px 0;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.75);
}
.email-container a { color: rgba(255,255,255,0.85) !important; }
.email-container a:hover { text-decoration: underline; }

@media (min-width: 992px) {
    .email-container {
        display: block;
    }
}

/* Nav links */
#sideNav .navbar-nav .nav-item .nav-link {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    text-align: center;
    padding: 0.4rem 0;
    color: rgba(255,255,255,0.85);
}
#sideNav .navbar-nav .nav-item .nav-link:hover,
#sideNav .navbar-nav .nav-item .nav-link:focus {
    color: #fff;
}

/* Desktop fixed sidebar */
@media (min-width: 992px) {
    #sideNav {
        position: fixed;
        top: 0;
        left: 0;
        width: 21rem;
        height: 100vh;
        display: flex;
        flex-direction: column;
        text-align: center;
    }
    #sideNav .navbar-brand {
        display: flex;
        margin: auto auto 0;
        padding: 0.5rem;
    }
    #sideNav .sidebar-identity {
        margin-bottom: 0;
    }
    #sideNav .navbar-collapse {
        display: flex !important;
        align-items: center;
        flex-grow: 0;
        flex-shrink: 0;
        width: 100%;
        margin-bottom: auto;
        margin-top: 0;
    }
    #sideNav .navbar-collapse .navbar-nav {
        flex-direction: column;
        width: 100%;
        gap: 0.3rem;
    }
    #sideNav .navbar-collapse .navbar-nav .nav-item {
        display: block;
        width: 100%;
    }
    #sideNav .navbar-collapse .navbar-nav .nav-item .nav-link {
        display: block;
        text-align: center;
    }
}

/* Collapsed mobile navbar padding */
@media (max-width: 991.98px) {
    #navbarSupportedContent {
        padding-bottom: 2rem;
    }
    #sideNav .navbar-collapse .navbar-nav .nav-item .nav-link {
        text-align: center;
    }
}

/* ---- Social Icons ---- */
.social-icons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.15rem;
    padding: 1rem 0 1.5rem;
}

@media (min-width: 992px) {
    .social-icons {
        position: absolute;
        left: 50%;
        bottom: 1rem;
        transform: translateX(-50%);
        padding: 0;
    }
    .social-icons-collapsed {
        display: none !important;
    }
}

@media (max-width: 991.98px) {
    .social-icons-sidebar {
        display: none;
    }
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 2.4rem;
    width: 2.4rem;
    font-size: 1.4rem;
    color: #fff !important;
    background-image: none !important;
    background-size: auto !important;
    text-shadow: none !important;
    transition: transform 0.2s ease, color 0.2s ease;
}
.social-icon:hover {
    color: #ffd0c0 !important;
    transform: scale(1.15);
    text-shadow: none !important;
}

/* ---- Main sections ---- */
section.resume-section {
    display: flex;
    align-items: flex-start;
    padding: 3rem 1.5rem;
}
section.resume-section .resume-section-content {
    width: 100%;
    max-width: 100%;
}


@media (min-width: 992px) {
    section.resume-section {
        padding: 3rem 4rem 3rem 3.5rem;
    }
}

#about.resume-section {
    padding-top: 5rem;
}
@media (max-width: 991.98px) {
    #about.resume-section {
        padding-top: 5rem;
    }
}

hr.m-0 {
    display: none;
}

/* ---- About section ---- */
.about-name {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0;
    line-height: 1.1;
}

.about-intro h2 {
    margin-bottom: 1rem;
}

.about-intro {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-top: 0.8rem;
    font-weight: 400;
}

.research-themes {
    list-style: none;
    padding-left: 0;
    margin: 0.75rem 0 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.research-themes li {
    background: transparent;
    color: #2c5f8a;
    border: 1px solid #2c5f8a;
    border-radius: 20px;
    padding: 0.18rem 0.8rem;
    font-size: 0.82rem;
    font-weight: 500;
}
.research-themes li::before { display: none; }

/* ---- What's New ---- */
.resume-item {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid #dee2e6;
}

.whats-new-intro {
    color: #6c757d;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.news-filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.news-filter-btn {
    background: #fff;
    border: 1.5px solid #dee2e6;
    color: #495057;
    border-radius: 20px;
    padding: 3px 14px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    font-family: inherit;
}
.news-filter-btn:hover,
.news-filter-btn.active {
    background: #2c5f8a;
    color: #fff;
    border-color: #2c5f8a;
}

#whats-new-list {
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
}
#whats-new-list li {
    padding: 0.45rem 0;
    border-bottom: 1px solid #f1f3f5;
}
#whats-new-list li:last-child { border-bottom: none; }

.news-line {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
}
.news-meta-block {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-shrink: 0;
    min-width: 160px;
}
.news-item-tag {
    font-size: 0.68rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 10px;
    text-transform: uppercase;
    white-space: nowrap;
    letter-spacing: 0.03em;
}
.news-item-tag.cat-research  { background: #d4e8f0; color: #1f5f7a; }
.news-item-tag.cat-talks     { background: #fde8d8; color: #8a3c18; }
.news-item-tag.cat-awards    { background: #e3f4e3; color: #256325; }

.news-date {
    color: #6c757d;
    font-size: 0.82rem;
    white-space: nowrap;
    font-weight: 500;
}
.news-item-body {
    font-size: 1.0rem;
    line-height: 1.55;
    color: #495057;
}

/* ---- Publication cards ---- */
.pub-section-heading {
    font-size: 1.3rem;
    font-weight: 700;
    color: #6c757d;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 2rem 0 1rem;
    padding-bottom: 0.4rem;
}
.pub-section-heading:first-of-type { margin-top: 0.5rem; }

.pub-card {
    position: relative;
    background: #fff;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 1.25rem 1.5rem 1.25rem 1.75rem;
    margin-bottom: 1.25rem;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}
.pub-card:hover {
    box-shadow: 0 4px 18px rgba(0,0,0,0.09);
    transform: translateY(-1px);
}

.pub-thumb {
    flex-shrink: 0;
    width: 160px;
    height: 120px;
    border-radius: 4px;
    background-color: #dce8f5;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.pub-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 4px;
}
.pub-thumb-icon {
    font-size: 2rem;
    color: #2c5f8a;
    opacity: 0.4;
}

.pub-details {
    flex: 1;
    min-width: 0;
}

.pub-card papertitle {
    font-size: 1.4rem;
}

.pub-desc {
    margin: 0.4rem 0 0;
    font-size: 0.92rem;
    color: #6c757d;
    font-style: italic;
    line-height: 1.5;
}

.pub-authors {
    display: block;
    margin: 0.3rem 0 0;
    font-size: 1.0rem;
    color: #495057;
}

.badges {
    margin-top: 0.55rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem;
}

.badge-venue {
    display: inline-block;
    background: #5a88c2;
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 2px 9px;
    border-radius: 4px;
    letter-spacing: 0.02em;
}
.badge-venue.oral-badge {
    background: #c97825;
}
.badge-venue.workshop-badge {
    background: #6b7c93;
}
.badge-venue.preprint-badge {
    background: #7a7a7a;
}

.badges a {
    font-size: 0.88rem;
    color: #5f9fbd;
}

.publications-footnote {
    color: #6c757d;
    font-size: 0.92rem;
    margin-bottom: 0.5rem;
}

/* ---- Hover underline animation ---- */
.hover-underline-animation {
    display: inline;
    background-image: linear-gradient(#2c5f8a, #2c5f8a);
    background-position: 0% 100%;
    background-repeat: no-repeat;
    background-size: 0% 2px;
    transition: background-size 0.3s ease;
}
.hover-underline-animation:hover,
a:hover .hover-underline-animation {
    background-size: 100% 2px;
}

/* ---- Projects section ---- */
.project-card {
    position: relative;
    background: #fafafa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 1rem 1.25rem 1rem 1.5rem;
    margin-bottom: 1rem;
    transition: box-shadow 0.2s ease;
}
.project-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    background-color: #5a88c2;
    border-radius: 8px 0 0 8px;
}
.project-card:hover { box-shadow: 0 3px 12px rgba(0,0,0,0.07); }

.project-title {
    font-weight: 700;
    font-size: 1rem;
    color: #212529;
}
.project-meta {
    font-size: 0.88rem;
    color: #6c757d;
    margin-top: 0.2rem;
}

/* ---- Misc utilities ---- */
.section-subtext {
    color: #6c757d;
    font-size: 0.95rem;
}