/* ============================================================
   Academic Professional Override — Apple-inspired minimal style
   Clean, concise, content-focused. Every element earns its place.
   ============================================================ */

/* ------ Base ------ */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: #1d1d1f;
    background-color: #fff;
    font-size: 15px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.01em;
    overflow-x: hidden;
}

html {
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6,
.bold, .uppercase {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
    letter-spacing: -0.02em;
}

h4 {
    font-size: 17px;
    line-height: 1.45;
}

p, li, address, span, a, em, strong, small, blockquote {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, sans-serif;
}

a {
    color: #1A6B8A;
    transition: color 0.15s ease;
}

a:hover {
    color: #0f4a60;
}

::selection {
    background: rgba(26, 107, 138, 0.15);
}

/* ------ Navigation ------ */
#nav-bar {
    background: rgba(255, 255, 255, 0.92);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: none;
}

#nav-bar.sticky {
    background: rgba(255, 255, 255, 0.92);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    box-shadow: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

#logo h4,
#logo h4 a {
    color: #1d1d1f !important;
    font-weight: 600;
    font-size: 17px;
    letter-spacing: -0.02em;
}

.navbar-nav > li > a {
    color: #1d1d1f !important;
    font-weight: 400;
    font-size: 13px;
    letter-spacing: 0;
    text-transform: none;
    padding: 15px 13px;
    opacity: 0.72;
    transition: opacity 0.15s ease;
}

.navbar-nav > li > a:hover,
.navbar-nav > li > a:focus {
    opacity: 1;
    color: #1d1d1f !important;
    background: transparent !important;
}

.navbar-nav > li.active > a,
.navbar-nav > li.active > a:hover {
    color: #1d1d1f !important;
    opacity: 1;
    font-weight: 600;
    background: transparent !important;
}

/* Remove colored underline on active nav */
.navbar-nav > li.active > a:after,
.navbar-nav > li > a:after {
    background: transparent !important;
    height: 0 !important;
}

.navbar-toggle .icon-bar {
    background-color: #1d1d1f;
}

/* ------ Page Header (subpages) — minimal ------ */
#page-head {
    max-height: 50px;
    min-height: 40px;
    padding: 15px 0 !important;
    opacity: 0.5;
}

/* ------ Layout & Spacing ------ */
.p-50-v {
    padding: 60px 0;
}

.container {
    max-width: 920px;
}

/* ------ Section Titles ------ */
.le-title {
    margin-bottom: 30px;
}

.le-title h4.title {
    font-weight: 600;
    font-size: 24px;
    color: #1d1d1f;
    letter-spacing: -0.03em;
    text-transform: none;
}

/* Hide decorative icons next to section titles */
.le-title [class^="icon-"],
.le-title [class*=" icon-"] {
    display: none;
}

/* Keep fa icons in research themes visible */
.le-title .fa,
.le-title .fa-solid,
.le-title i.fa-solid {
    display: inline-block;
    color: #1A6B8A;
    opacity: 0.7;
    font-size: 18px;
}

.page-title {
    margin-bottom: 28px;
}

/* ------ Gray Sections ------ */
.bg-gray,
section.bg-gray {
    background-color: #f5f5f7 !important;
}

/* ------ Homepage About / Hero ------ */
#about {
    padding: 70px 0 60px;
}

#about .title-huge {
    font-weight: 600;
    font-size: 32px;
    color: #1d1d1f;
    letter-spacing: -0.03em;
    margin-bottom: 2px;
}

#about h5 {
    font-weight: 400;
    color: #6e6e73;
    font-size: 17px;
    margin-bottom: 16px;
}

#about p {
    color: #424245;
    font-size: 15px;
    line-height: 1.8;
}

/* Profile image — clean */
.le-member .member-image img {
    border-radius: 8px;
}

.le-member .line-1,
.le-member .line-2 {
    display: none;
}

/* ------ Buttons ------ */
.le-btn {
    border-radius: 20px;
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0;
    padding: 8px 20px;
    transition: all 0.2s ease;
    border-width: 1px;
}

.le-btn:hover {
    transform: none;
    box-shadow: none;
    opacity: 0.85;
}

/* ------ Blockquotes ------ */
.le-blockquote {
    border-left: 2px solid #1A6B8A;
    background: #f5f5f7;
    padding: 14px 20px;
    margin: 15px 0;
    border-radius: 0;
}

.le-blockquote p {
    font-size: 14px;
    margin-bottom: 0;
    color: #424245;
}

.le-blockquote small {
    color: #86868b;
    font-style: italic;
    font-size: 13px;
}

/* ------ Research Interest Cards ------ */
.iconic-box {
    background: #fff;
    border: 1px solid #e8e8ed;
    border-radius: 12px;
    padding: 28px 22px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: none;
}

.iconic-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.iconic-box .head {
    margin-bottom: 14px;
}

.iconic-box .head h4 {
    font-size: 16px;
    font-weight: 600;
    color: #1d1d1f;
    text-transform: none;
}

.iconic-box .head i,
.iconic-box .head .fa-solid {
    color: #1A6B8A;
}

.iconic-box p {
    font-size: 14px;
    color: #6e6e73;
    line-height: 1.65;
}

/* ------ Selected Publications (homepage) ------ */
.publication-list {
    padding-left: 0;
    list-style: none;
    counter-reset: pub-counter;
}

.publication-list li {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e8e8ed;
    counter-increment: pub-counter;
}

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

.publication-list h4 {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 4px;
}

.publication-list h4 a {
    color: #1A6B8A;
}

.publication-list h4 a:hover {
    color: #0f4a60;
}

.publication-list p {
    font-size: 13px;
    color: #6e6e73;
    margin-bottom: 0;
}

/* ------ Publications Page ------ */
.pub-year {
    font-size: 20px !important;
    font-weight: 600 !important;
    color: #1d1d1f !important;
    border-bottom: none !important;
    padding-bottom: 0 !important;
    margin: 40px 0 16px 0 !important;
    display: block;
}

/* .first-author indicator removed */

#page-content ol {
    padding-left: 20px;
}

#page-content ol li {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid #f0f0f0;
    line-height: 1.6;
}

#page-content ol li:last-child {
    border-bottom: none;
}

#page-content ol li h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 3px;
    line-height: 1.45;
}

#page-content ol li h4 a {
    color: #1A6B8A;
}

#page-content ol li p {
    font-size: 13px;
    color: #6e6e73;
    margin-bottom: 0;
}

/* ------ Timeline (Experience, Talks) ------ */
.timeline-holder {
    border-left-color: #e8e8ed;
}

.timeline-item {
    margin-bottom: 35px;
}

.timeline-item .icon-holder {
    background: #1A6B8A;
    border-radius: 50%;
    width: 36px;
    height: 36px;
}

.timeline-item .icon-holder i,
.timeline-item .icon-holder span {
    font-size: 14px;
}

.timeline-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: #1d1d1f;
    text-transform: none;
}

.timeline-item p,
.timeline-item li {
    font-size: 14px;
    color: #424245;
    line-height: 1.7;
}

.timeline-item ul {
    padding-left: 18px;
}

.timeline-item .info-box .info-big {
    font-size: 12px;
    font-weight: 600;
    color: #1A6B8A;
    text-transform: none;
}

/* ------ News Page ------ */
#page-content article h4.uppercase {
    font-size: 18px;
    font-weight: 600;
    color: #1d1d1f;
    text-transform: none;
}

#page-content article > ul {
    padding-left: 18px;
}

#page-content article > ul > li {
    margin-bottom: 8px;
    font-size: 14px;
    color: #424245;
    line-height: 1.7;
    border-bottom: none;
    padding-bottom: 0;
}

/* ------ About Page ------ */
#skills-section h5 {
    font-weight: 600;
    font-size: 14px;
    color: #1d1d1f;
    text-transform: none;
}

#skills-section p {
    font-size: 14px;
    color: #6e6e73;
}

/* Education blockquotes */
#page-content .le-blockquote ul {
    margin-bottom: 5px;
}

#page-content .le-blockquote li {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

/* Service section */
#services .services-item {
    text-align: left;
}

#services .services-item span[class^="icon-"] {
    display: none;
}

#services .services-item h4 {
    font-size: 17px;
    font-weight: 600;
    text-transform: none;
}

#services .services-item p {
    font-size: 14px;
    color: #6e6e73;
    line-height: 1.5;
    margin-bottom: 4px;
}

/* ------ Research Page ------ */
#research-vision p {
    font-size: 16px;
    color: #424245;
    line-height: 1.85;
    max-width: 720px;
}

#page-content article p {
    font-size: 14px;
    color: #424245;
    line-height: 1.75;
}

#page-content article ul li a {
    color: #1A6B8A;
    font-weight: 500;
}

/* ------ Footer ------ */
footer.bg-dark {
    background: #1d1d1f !important;
    padding: 50px 0;
}

footer h4.bold,
footer h4.bold a {
    color: #f5f5f7 !important;
    font-weight: 600;
    font-size: 17px;
    letter-spacing: -0.02em;
}

footer .title-marked {
    font-size: 12px;
    font-weight: 600;
    color: #86868b;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

footer .info-list li {
    font-size: 13px;
    color: #86868b;
}

footer .info-list a {
    color: #a1a1a6;
}

footer .info-list a:hover {
    color: #f5f5f7;
}

footer address {
    color: #86868b;
    font-size: 13px;
    font-style: normal;
}

footer .social-icons {
    display: inline-block;
    padding: 0;
}

footer .social-icons li {
    display: inline-block;
}

footer .social-icons a {
    color: #86868b;
    border-color: #424245;
    transition: all 0.15s ease;
    width: 36px;
    height: 36px;
    line-height: 36px;
    font-size: 14px;
}

footer .social-icons a:hover {
    color: #f5f5f7;
    border-color: #f5f5f7;
    background: transparent;
}

/* ------ Scroll-to-top ------ */
.goto-top {
    border-radius: 50%;
    background: rgba(29, 29, 31, 0.7);
}

/* ------ Kill decorative template effects ------ */
.pace .pace-progress {
    background: #1A6B8A;
    height: 1px;
}

/* Disable scroll-reveal jank */
[data-sr-id] {
    visibility: visible !important;
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
}

/* Remove touch-hover template effects */
.touch-hover:before,
.touch-hover:after {
    display: none !important;
}

/* ------ Responsive ------ */
@media (max-width: 767px) {
    body {
        font-size: 14px;
    }

    #about {
        padding: 30px 0;
    }

    #about .title-huge {
        font-size: 24px;
        text-align: center;
    }

    #about h5 {
        text-align: center;
    }

    #about p {
        text-align: center;
    }

    /* Center profile image on mobile */
    #about .le-member {
        text-align: center;
        margin-bottom: 20px;
    }

    #about .member-image img {
        max-width: 180px;
        margin: 0 auto;
    }

    /* Center buttons on mobile */
    #about .le-btn {
        display: inline-block;
        margin-bottom: 8px;
        font-size: 12px;
        padding: 7px 16px;
    }

    .container {
        padding-left: 16px;
        padding-right: 16px;
    }

    .p-50-v {
        padding: 30px 0;
    }

    .le-title {
        margin-bottom: 20px;
    }

    .le-title h4.title {
        font-size: 18px;
    }

    /* Nav mobile menu */
    .navbar-collapse {
        background: #fff;
        border-top: 1px solid #e8e8ed;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    }

    .navbar-nav > li > a {
        padding: 10px 15px;
        font-size: 14px;
    }

    #page-head {
        max-height: 30px;
        min-height: 25px;
        padding: 10px 0 !important;
    }

    /* Research interest cards — 2 per row on mobile */
    .iconic-box {
        margin-bottom: 15px;
        padding: 20px 16px;
    }

    .iconic-box .head h4 {
        font-size: 14px;
    }

    .iconic-box p {
        font-size: 13px;
    }

    /* Collaborations section */
    #collaborations .row {
        gap: 20px 20px !important;
    }

    #collaborations p {
        font-size: 13px !important;
    }

    #collaborations small {
        font-size: 11px !important;
    }

    /* Timeline items */
    .timeline-item {
        margin-bottom: 25px;
    }

    .timeline-item h4 {
        font-size: 15px;
    }

    .timeline-item p,
    .timeline-item li {
        font-size: 13px;
    }

    .timeline-item .info-box .info-big {
        font-size: 11px;
    }

    /* Publications page */
    #page-content ol li h4 {
        font-size: 14px;
    }

    #page-content ol li p {
        font-size: 12px;
    }

    .pub-year {
        font-size: 18px !important;
        margin: 30px 0 12px 0 !important;
    }

    /* Education blockquotes */
    .le-blockquote {
        padding: 12px 14px;
        margin: 10px 0;
    }

    .le-blockquote ul li {
        font-size: 13px;
    }

    /* About page skills */
    #skills-section h5 {
        font-size: 13px;
    }

    #skills-section p {
        font-size: 13px;
    }

    /* News list */
    #news ul li,
    #page-content article > ul > li {
        font-size: 13px;
    }

    /* Footer */
    footer.bg-dark {
        padding: 25px 0;
    }

    footer h4.bold {
        font-size: 15px !important;
    }

    footer .social-icons a {
        width: 32px;
        height: 32px;
        line-height: 32px;
        font-size: 13px;
    }

    /* Prevent horizontal overflow */
    img {
        max-width: 100%;
        height: auto;
    }

    /* Fix Bootstrap column padding on mobile */
    .col-xs-12 {
        padding-left: 10px;
        padding-right: 10px;
    }
}

@media (min-width: 768px) and (max-width: 991px) {
    .container {
        max-width: 730px;
    }

    #about .member-image img {
        max-width: 200px;
    }

    .iconic-box {
        margin-bottom: 15px;
        padding: 22px 18px;
    }

    .timeline-item h4 {
        font-size: 15px;
    }
}