/* =============================================
   AL-FOLIO INSPIRED THEME — Aman Sharma
   ============================================= */

/* ---------- Variables ---------- */
:root {
    --bg: #ffffff;
    --text: #000000;
    --text-light: #828282;
    --theme: #E77500;
    --hover: #E77500;
    --divider: rgba(0, 0, 0, 0.1);
    --card-bg: #ffffff;
    --footer-bg: #1c1c1d;
    --footer-text: #e8e8e8;
    --footer-link: #ffffff;
}

html[data-theme="dark"] {
    --bg: #1c1c1d;
    --text: #e8e8e8;
    --text-light: #828282;
    --theme: #2698ba;
    --hover: #2698ba;
    --divider: #424246;
    --card-bg: #212529;
    --footer-bg: #e8e8e8;
    --footer-text: #1c1c1d;
    --footer-link: #000000;
}

/* ---------- Reset ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    font-size: 17px;
    font-weight: 300;
    line-height: 1.7;
    color: var(--text);
    background-color: var(--bg);
    padding-top: 56px;
    transition: background-color 0.75s, color 0.75s;
}

html.transition, html.transition *, html.transition *::before, html.transition *::after {
    transition: all 750ms !important;
    transition-delay: 0 !important;
}

::selection { background: var(--theme); color: #fff; }

p, h1, h2, h3, h4, h5, h6, em, div, li, span, strong, td, th {
    color: var(--text);
}

a { color: var(--theme); text-decoration: none; }
a:hover { color: var(--hover); text-decoration: underline; }

hr { border: 0; border-top: 1px solid var(--divider); margin: 1.5rem 0; }
img { max-width: 100%; }

/* ---------- Progress bar ---------- */
#progress {
    position: fixed;
    left: 0;
    top: 56px;
    z-index: 10;
    width: 0%;
    height: 2px;
    background: var(--theme);
}

/* ---------- Navbar ---------- */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1030;
    height: 56px;
    background: var(--bg);
    border-bottom: 1px solid var(--divider);
    opacity: 0.95;
    display: flex;
    align-items: center;
    transition: background-color 0.75s, border-color 0.75s;
}

.nav-container {
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    padding: 0 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    font-weight: 500;
    color: var(--text);
    font-size: 16px;
    text-decoration: none;
}
.nav-brand:hover { color: var(--text); text-decoration: none; }

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2px;
    align-items: center;
}

.nav-menu a {
    color: var(--text);
    font-size: 14px;
    font-weight: 400;
    padding: 6px 12px;
    text-decoration: none;
    transition: color 0.2s;
}
.nav-menu a:hover { color: var(--hover); text-decoration: none; }
.nav-menu a.active { font-weight: 700; color: var(--theme); }

.nav-right {
    display: flex;
    align-items: center;
    gap: 4px;
}

#light-toggle {
    padding: 6px 8px;
    border: 0;
    background: inherit;
    color: var(--text);
    cursor: pointer;
    font-size: 16px;
    transition: color 0.2s;
}
#light-toggle:hover { color: var(--hover); }

.nav-toggle {
    display: none;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--text);
    font-size: 20px;
    padding: 6px;
}

/* ---------- Container ---------- */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 15px;
}

/* ---------- Profile / About ---------- */
.about {
    padding-top: 2rem;
    padding-bottom: 0.5rem;
}

.profile {
    float: right;
    width: 220px;
    margin-left: 1.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.profile .img-wrap {
    width: 100%;
    border-radius: 50%;
    overflow: hidden;
    aspect-ratio: 1;
}

.profile img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 15%;
    transform: scale(1.2);
}

.profile .social {
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-top: 14px;
    flex-wrap: wrap;
}

.profile .social a {
    color: var(--text);
    font-size: 18px;
    transition: color 0.2s;
}
.profile .social a:hover { color: var(--theme); text-decoration: none; }

.about-content h1 {
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 4px;
}

.about-content .lead {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.about-content p {
    font-size: 16px;
    line-height: 1.8;
    font-weight: 300;
}

.about-content p a {
    text-decoration-line: underline;
    text-decoration-style: dotted;
    text-underline-offset: 2px;
}
.about-content p a:hover { text-decoration-style: solid; }

.clearfix::after { content: ''; display: table; clear: both; }

/* ---------- Section ---------- */
.section { padding: 1.5rem 0; }

.section h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1rem;
}

.section h2 a { color: var(--text); text-decoration: none; }
.section h2 a:hover { color: var(--theme); text-decoration: none; }

/* Last pub-item inside a section has no bottom border — the section's <hr> acts as divider */
.section .pub-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

/* ---------- Page header ---------- */
.page-header {
    padding-top: 2rem;
    padding-bottom: 0.5rem;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 4px;
}

.page-header p {
    color: var(--text-light);
    font-size: 15px;
}

/* ---------- Research Highlights ---------- */
.highlights h3 {
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-light);
    margin-bottom: 8px;
    margin-top: 24px;
}
.highlights h3:first-child { margin-top: 0; }

.highlights ul {
    list-style: none;
    padding: 0;
}

.highlights ul li {
    font-size: 15.5px;
    padding: 6px 0 6px 18px;
    position: relative;
    line-height: 1.7;
}
.highlights ul li::before {
    content: '\203A';
    position: absolute;
    left: 0;
    color: var(--theme);
    font-weight: 700;
}

/* ---------- News ---------- */
.news-table { width: 100%; }

.news-table tr td {
    padding: 10px 0;
    font-size: 15.5px;
    vertical-align: top;
    border-bottom: 1px solid var(--divider);
}
.news-table tr:last-child td { border-bottom: none; }

.news-table .date {
    width: 85px;
    color: var(--theme);
    font-weight: 500;
    font-size: 13px;
    white-space: nowrap;
    padding-right: 12px;
}

.news-table .desc { font-weight: 300; }
.news-table .desc b, .news-table .desc strong { font-weight: 500; }

/* ---------- Blog / Posts ---------- */
.post-list {
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%;
    overflow-x: hidden;
}

.post-list li {
    border-bottom: 1px solid var(--divider);
    padding: 1.5rem 0;
    overflow-wrap: break-word;
    word-break: break-word;
    min-width: 0;
}
.post-list li:first-child { padding-top: 0; }
.post-list li:last-child { border-bottom: none; }

.post-meta {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 2px;
}

.post-title {
    font-size: 18px;
    font-weight: 500;
}

.post-title a { color: var(--text); text-decoration: none; }
.post-title a:hover { color: var(--theme); }

.post-desc {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 4px;
    font-weight: 300;
    line-height: 1.6;
}

.post-tags {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 6px;
}

.post-tags a { color: var(--text-light); }
.post-tags a:hover { color: var(--theme); }

.reading-time {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* ---------- Publications ---------- */
.pub-year {
    color: var(--text-light);
    border-top: none;
    padding-top: 0.5rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
    text-align: right;
    font-size: 1.3rem;
    font-weight: 400;
    opacity: 0.4;
}
.pub-year:first-of-type { margin-top: 0; }

.pub-item {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    margin-bottom: 0;
    padding: 2rem 0;
    border-bottom: 1px solid var(--divider);
    min-width: 0;
    overflow-wrap: break-word;
    word-break: break-word;
}
.pub-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.pub-thumb {
    flex-shrink: 0;
    width: 200px;
    height: 160px;
    border-radius: 6px;
    overflow: hidden;
    background: #ffffff;
    border: 1px solid var(--divider);
}

html[data-theme="dark"] .pub-thumb { background: #2a2a2e; }

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

.pub-thumb-empty {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    color: var(--text-light);
    background: linear-gradient(135deg, var(--card-bg), rgba(0,0,0,0.02));
}

/* If you want to replace SVGs with real paper figures later,
   just swap the <img src="..."> in the HTML */

.pub-body {
    flex: 1;
    min-width: 0;
    overflow-wrap: break-word;
    word-break: break-word;
}

.pub-abbr {
    display: inline-block;
    margin-bottom: 4px;
}

.pub-abbr span {
    background: var(--theme);
    color: #fff;
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.pub-title {
    font-weight: 500;
    font-size: 16px;
    line-height: 1.45;
    margin-bottom: 3px;
}

.pub-authors {
    font-size: 14.5px;
    font-weight: 300;
    margin-bottom: 2px;
}

.pub-authors em {
    font-style: normal;
    border-bottom: 1px solid var(--text);
    font-weight: 500;
}

.pub-authors a {
    border-bottom: 1px dashed var(--theme);
    text-decoration: none;
}
.pub-authors a:hover { border-bottom-style: solid; text-decoration: none; }

.pub-venue {
    font-size: 13px;
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 8px;
}

.pub-links {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.pub-btn {
    font-size: 12px;
    font-weight: 400;
    color: var(--text);
    border: 1px solid var(--text);
    padding: 2px 12px;
    border-radius: 3px;
    text-decoration: none;
    transition: all 0.15s;
    display: inline-block;
}
.pub-btn:hover {
    color: var(--theme);
    border-color: var(--theme);
    text-decoration: none;
}

/* ---------- Abstract expand ---------- */
.pub-abstract {
    display: none;
    font-size: 13.5px;
    color: var(--text-light);
    font-weight: 300;
    line-height: 1.7;
    margin-top: 10px;
    padding: 10px 14px;
    border-left: 3px solid var(--theme);
    background: rgba(0,0,0,0.02);
    border-radius: 0 4px 4px 0;
}
html[data-theme="dark"] .pub-abstract { background: rgba(255,255,255,0.04); }
.pub-abstract.open { display: block; }

.pub-abstract-toggle {
    font-size: 12px;
    color: var(--text-light);
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    font-family: inherit;
    margin-top: 6px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color 0.15s;
}
.pub-abstract-toggle:hover { color: var(--theme); }
.pub-abstract-toggle .toggle-arrow { font-size: 10px; transition: transform 0.2s; display: inline-block; }
.pub-abstract-toggle.open .toggle-arrow { transform: rotate(90deg); }

/* ---------- Projects ---------- */
.proj-category {
    color: var(--divider);
    border-bottom: 1px solid var(--divider);
    padding-top: 0.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    text-align: right;
    font-size: 1.3rem;
    font-weight: 400;
}
.proj-category:first-of-type { margin-top: 0; }

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

.proj-list li {
    font-size: 15.5px;
    padding: 5px 0 5px 18px;
    position: relative;
    line-height: 1.65;
    font-weight: 300;
}

.proj-list li::before {
    content: '\2022';
    position: absolute;
    left: 0;
    color: var(--theme);
    font-weight: 700;
}

.proj-list li strong { font-weight: 500; }

.proj-list .proj-links {
    font-size: 13px;
}

/* ---------- Experience ---------- */
.exp-list {
    list-style: none;
    padding: 0;
}

.exp-list > li {
    padding-bottom: 1.2rem;
    padding-left: 20px;
    border-left: 2px solid var(--divider);
    position: relative;
}
.exp-list > li:last-child { padding-bottom: 0; }

.exp-list > li::before {
    content: '';
    position: absolute;
    left: -5px;
    top: 7px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--divider);
}
.exp-list > li:first-child::before { background: var(--theme); }

.exp-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 6px;
}

.exp-org { font-weight: 500; font-size: 15px; }
.exp-date { font-size: 13px; color: var(--text-light); }
.exp-role { font-size: 14px; color: var(--theme); font-weight: 400; margin: 1px 0 4px; }
.exp-desc { font-size: 14.5px; color: var(--text-light); font-weight: 300; line-height: 1.65; }

/* ---------- Education ---------- */
.edu-item {
    display: flex;
    gap: 14px;
    align-items: center;
    padding: 14px 16px;
    border: 1px solid var(--divider);
    border-radius: 6px;
}

.edu-icon { font-size: 28px; }
.edu-name { font-weight: 500; font-size: 15px; }
.edu-deg { font-size: 14.5px; color: var(--text-light); font-weight: 300; }
.edu-meta { font-size: 12px; color: var(--text-light); }

.awards-list {
    list-style: none;
    padding: 0;
    margin-top: 14px;
}

.awards-list li {
    font-size: 14px;
    font-weight: 300;
    padding: 3px 0 3px 16px;
    position: relative;
}
.awards-list li::before {
    content: '\2013';
    position: absolute;
    left: 0;
    color: var(--text-light);
}
.awards-list li strong { font-weight: 500; }

/* ---------- Contact Form ---------- */
.contact-form {
    max-width: 600px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 4px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--divider);
    border-radius: 4px;
    background: var(--bg);
    color: var(--text);
    font-family: inherit;
    font-size: 14px;
    font-weight: 300;
    transition: border-color 0.2s;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--theme);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-submit {
    padding: 10px 28px;
    background: var(--theme);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}
.form-submit:hover { opacity: 0.85; }

/* ---------- Footer ---------- */
.footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    font-size: 0.75rem;
    text-align: center;
    padding: 12px 0;
    margin-top: 3rem;
    transition: background-color 0.75s, color 0.75s;
}

.footer a { color: var(--footer-link); }
.footer a:hover { color: var(--theme); text-decoration: none; }

/* ---------- More link ---------- */
.more-link {
    font-size: 14px;
    font-weight: 400;
    margin-top: 8px;
    display: inline-block;
}

/* ---------- Responsive ---------- */

/* Tablet */
@media (max-width: 768px) {
    /* Nav */
    .nav-menu { display: none; }
    .nav-menu.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 56px; left: 0; right: 0;
        background: var(--bg);
        border-bottom: 1px solid var(--divider);
        padding: 8px 15px;
        gap: 0;
        z-index: 1029;
    }
    .nav-toggle { display: block; }

    /* Layout */
    .container { overflow-x: hidden; padding: 0 14px; }

    /* About */
    .profile { float: none; width: 160px; margin: 0 auto 1.2rem; }
    .about-content { text-align: center; }
    .about-content p { text-align: left; }
    .about-content h1 { font-size: 1.7rem; }

    /* Publications — side-by-side on tablet, stacked on phone */
    .pub-item {
        gap: 14px;
    }
    .pub-thumb {
        width: 140px;
        height: 100px;
        flex-shrink: 0;
    }
    .pub-title { font-size: 14.5px; }
    .pub-authors { font-size: 13px; }
    .pub-venue { font-size: 12px; }

    /* Blog */
    .post-list { overflow-x: hidden; }
    .post-title { font-size: 16px; }

    /* Forms */
    .exp-head { flex-direction: column; gap: 1px; }
    .form-row { grid-template-columns: 1fr; }

    /* Page header */
    .page-header h1 { font-size: 1.6rem; }
}

/* Phone */
@media (max-width: 520px) {
    /* Publications — fully stacked, image on top */
    .pub-item {
        flex-direction: column;
        gap: 10px;
    }
    .pub-thumb {
        width: 100%;
        max-width: 100%;
        height: 180px;
    }
    .pub-thumb img {
        object-fit: cover;
        object-position: top center;
    }
    .pub-body { width: 100%; }
    .pub-title { font-size: 15px; }
    .pub-abstract { font-size: 13px; }

    /* About */
    .about-content h1 { font-size: 1.5rem; }
    .about-content .lead { font-size: 0.9rem; }
    .about-content p { font-size: 15px; }

    /* Blog posts */
    .post-title { font-size: 15.5px; }
    .post-desc { font-size: 13.5px; }

    /* Section headings */
    .section h2 { font-size: 1.3rem; }

    /* News table */
    .news-table .date { width: 72px; font-size: 12px; }
    .news-table tr td { font-size: 13.5px; padding: 8px 0; }

    /* Highlights */
    .highlights ul li { font-size: 14.5px; }

    /* Contact form */
    .form-submit { width: 100%; }

    /* Nav padding */
    .container { padding: 0 12px; }
}