/*
Theme Name: DSV 2026
Theme URI: https://datasciencevidhya.com/
Author: Data Science Vidhya
Description: Redesign for Data Science Vidhya. Keeps all posts, pages, menus and URLs. Works with the block editor and Elementor. Fonts are hosted inside the theme.
Version: 2.1.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
Text Domain: dsv
*/

@font-face{font-family:"Bricolage Grotesque";src:url(fonts/bricolage-grotesque-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Bricolage Grotesque";src:url(fonts/bricolage-grotesque-latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"IBM Plex Sans";src:url(fonts/ibm-plex-sans-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"IBM Plex Sans";src:url(fonts/ibm-plex-sans-latin-400-italic.woff2) format("woff2");font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:"IBM Plex Sans";src:url(fonts/ibm-plex-sans-latin-500-normal.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"IBM Plex Sans";src:url(fonts/ibm-plex-sans-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}

:root{
  --ink:#14213D; --ink-2:#1E2E52; --paper:#FAFAF7; --white:#fff;
  --grid:#E4E8EF; --line:#D8DDE6; --muted:#5B6475;
  --plot:#2F5DA8; --marker:#F2B705; --marker-soft:#FFF4CC;
  --head:"Bricolage Grotesque",system-ui,sans-serif;
  --body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --wrap:1200px; --text:700px; --r:10px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:90px}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.7 var(--body);-webkit-font-smoothing:antialiased}
img,video,iframe{max-width:100%;height:auto}
a{color:var(--plot);text-underline-offset:3px}
a:hover{color:var(--ink)}
:focus-visible{outline:3px solid var(--marker);outline-offset:2px}
h1,h2,h3,h4,h5,h6{font-family:var(--head);line-height:1.12;margin:1.6em 0 .5em;letter-spacing:-.015em;font-weight:700}
h1{font-size:clamp(2.2rem,4.8vw,3.5rem)}
h2{font-size:clamp(1.7rem,3vw,2.3rem)}
h3{font-size:1.3rem;font-weight:600}
p{margin:0 0 1.2em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.screen-reader-text{position:absolute!important;clip:rect(1px,1px,1px,1px);width:1px;height:1px;overflow:hidden}
.skip-link:focus{clip:auto;width:auto;height:auto;background:var(--marker);color:var(--ink);padding:10px 16px;z-index:999;left:10px;top:10px}

/* Buttons */
.btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:8px;font:600 16px/1.2 var(--body);text-decoration:none;border:2px solid transparent;transition:background .15s,color .15s,border-color .15s}
.btn-marker{background:var(--marker);color:var(--ink)}
.btn-marker:hover{background:#fff;color:var(--ink)}
.btn-line{border-color:rgba(255,255,255,.5);color:#fff}
.btn-line:hover{border-color:#fff;background:rgba(255,255,255,.08);color:#fff}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:var(--plot);color:#fff}
.btn-outline{border-color:var(--ink);color:var(--ink);background:#fff}
.btn-outline:hover{background:var(--marker)}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;gap:24px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:700 1.2rem/1.1 var(--head);margin-right:auto}
.brand img,.custom-logo{max-height:46px;width:auto}
.custom-logo-link{margin-right:auto}
.brand-mark{width:32px;height:32px;flex:none}
.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:2px}
.nav li{position:relative}
.nav a{display:block;padding:8px 12px;color:var(--ink);text-decoration:none;font-weight:500;border-radius:6px}
.nav a:hover{background:var(--grid)}
.nav .current-menu-item>a,.nav .current_page_item>a{box-shadow:inset 0 -3px 0 var(--marker);border-radius:0}
.nav .sub-menu{display:none;position:absolute;top:100%;left:0;min-width:230px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:6px;flex-direction:column;box-shadow:0 12px 32px rgba(20,33,61,.12)}
.nav li:hover>.sub-menu,.nav li:focus-within>.sub-menu{display:flex}
.header-cta{padding:10px 18px;font-size:15px}
.menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:6px;padding:8px 12px;font:600 15px var(--body);color:var(--ink);cursor:pointer}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--ink);color:#fff;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:40px 40px}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.35fr 1fr;gap:56px;align-items:center;padding:88px 24px 96px}
.hero h1{color:#fff;margin:0 0 20px;font-size:clamp(2.5rem,5.6vw,4.3rem);max-width:13ch}
.hero-text{font-size:1.15rem;color:#C9D2E4;max-width:50ch;margin-bottom:32px}
.hero-chart{position:absolute;left:0;right:0;bottom:0;width:100%;height:55%;pointer-events:none}
.hero-chart path{fill:none;stroke:var(--marker);stroke-width:2.5;stroke-linecap:round;opacity:.55;stroke-dasharray:2000;stroke-dashoffset:2000;animation:draw 2.4s ease-out .2s forwards}
@keyframes draw{to{stroke-dashoffset:0}}
@media (prefers-reduced-motion:reduce){.hero-chart path{animation:none;stroke-dashoffset:0}}

.profile{position:relative;background:#fff;color:var(--ink);border-radius:14px;padding:28px;box-shadow:0 24px 60px rgba(0,0,0,.25)}
.profile-top{display:flex;gap:18px;align-items:center;margin-bottom:18px}
.profile-photo{width:84px;height:84px;border-radius:12px;object-fit:cover;flex:none;background:var(--grid)}
.profile-initials{width:84px;height:84px;border-radius:12px;display:grid;place-items:center;background:var(--marker);font:700 1.8rem var(--head);flex:none}
.profile h2{font-size:1.35rem;margin:0 0 4px}
.profile-role{margin:0;color:var(--muted);font-size:.95rem;line-height:1.45}
.profile ul{list-style:none;margin:0 0 20px;padding:16px 0 0;border-top:1px solid var(--line)}
.profile li{position:relative;padding:5px 0 5px 22px;font-size:.95rem;line-height:1.45}
.profile li::before{content:"";position:absolute;left:0;top:12px;width:10px;height:10px;border-radius:50%;background:var(--marker);box-shadow:0 0 0 2px var(--ink)}
.profile-links{display:flex;gap:16px;flex-wrap:wrap;font-weight:600;font-size:.95rem}

/* Sections */
.section{padding:88px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:40px}
.section-head h2{margin:0;max-width:20ch}
.section-head p{margin:8px 0 0;color:var(--muted);max-width:56ch}
.more{font-weight:600;white-space:nowrap}

/* Pillars */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);border-top:2px solid var(--ink)}
.pillar{padding:32px 32px 8px 0}
.pillar+.pillar{padding-left:32px;border-left:1px solid var(--line)}
.pillar svg{width:56px;height:56px;margin-bottom:16px}
.pillar h3{margin:0 0 8px;font-size:1.4rem}
.pillar p{color:var(--muted);margin-bottom:14px}
.pillar a{font-weight:600}

/* Posts */
.post-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;margin-bottom:24px}
.post-side{display:grid;gap:32px;align-content:start}
.card{display:flex;flex-direction:column}
.card-img{display:block;aspect-ratio:16/9;border-radius:var(--r);overflow:hidden;background:var(--ink);margin-bottom:16px;position:relative}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.card:hover .card-img img{transform:scale(1.03)}
.card-img.noimg{background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:24px 24px}
.card-img.noimg span{position:absolute;left:18px;bottom:14px;color:var(--marker);font:700 1.1rem var(--head)}
.card h3{margin:6px 0 8px;font-size:1.25rem}
.card.big h3{font-size:clamp(1.5rem,2.4vw,2rem)}
.card h3 a,.entry-row h3 a{color:var(--ink);text-decoration:none}
.card h3 a:hover,.entry-row h3 a:hover{text-decoration:underline;text-decoration-color:var(--marker);text-decoration-thickness:3px}
.card p{color:var(--muted);margin:0}
.post-meta{display:flex;gap:12px;flex-wrap:wrap;align-items:center;font-size:.88rem;color:var(--muted)}
.cat-link{font-size:.85rem;font-weight:600;color:var(--plot);text-decoration:none;background:#EAF0FA;padding:3px 10px;border-radius:999px}
.cat-link:hover{background:var(--marker-soft);color:var(--ink)}
.entry-row{display:grid;grid-template-columns:140px 1fr;gap:28px;padding:24px 0;border-top:1px solid var(--line)}
.entry-row time{color:var(--muted);font-size:.92rem;padding-top:4px}
.entry-row h3{margin:6px 0 4px;font-size:1.2rem}
.entry-row p{margin:0;color:var(--muted)}

/* Teacher */
.teacher{display:grid;grid-template-columns:320px 1fr;gap:56px;align-items:center}
.teacher-photo{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:14px;background:var(--grid)}
.teacher-ph{width:100%;aspect-ratio:4/5;border-radius:14px;background:var(--marker);display:grid;place-items:center;font:700 4rem var(--head)}
.teacher h2{margin:0 0 6px}
.teacher .role{color:var(--muted);margin-bottom:20px}
.teacher .btns{margin-top:24px}

/* Contact band */
.band{background:var(--marker)}
.band .wrap{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;padding:56px 24px}
.band h2{margin:0 0 6px}
.band p{margin:0;max-width:52ch}

/* Pages */
.page-head{background:var(--ink);color:#fff;padding:64px 0 56px;margin-bottom:56px;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:40px 40px}
.page-head h1{color:#fff;margin:10px 0 12px;max-width:24ch}
.page-head .post-meta{color:#C9D2E4}
.page-head .cat-link{background:var(--marker);color:var(--ink)}
.page-head .meta,.page-head p{color:#C9D2E4;margin:0}
.page-head .search-form{margin-top:20px;max-width:520px}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:64px;padding-bottom:88px}
.layout.no-sidebar{grid-template-columns:minmax(0,var(--text));justify-content:center}
.entry-content{max-width:var(--text)}
.entry-content>*:first-child{margin-top:0}
.entry-content h2{font-size:1.75rem}
.entry-content h3{font-size:1.35rem}
.entry-content img{border-radius:8px}
.entry-content li{margin-bottom:.4em}
.entry-content blockquote{margin:1.8em 0;padding:18px 22px;border-left:4px solid var(--marker);background:var(--marker-soft);border-radius:0 8px 8px 0}
.entry-content blockquote p:last-child{margin:0}
.entry-content table{width:100%;border-collapse:collapse;font-size:.95rem;display:block;overflow-x:auto}
.entry-content th,.entry-content td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.entry-content th{background:var(--grid)}
.entry-content pre{background:var(--ink);color:#E8ECF4;padding:18px;border-radius:8px;overflow-x:auto;font-size:.9rem}
.entry-content code{background:var(--grid);padding:2px 5px;border-radius:4px;font-size:.92em}
.entry-content pre code{background:none;padding:0}
.featured{margin:0 0 36px;border-radius:12px;overflow:hidden}
.full-width .entry-content{max-width:none}
.progress{position:fixed;top:0;left:0;height:4px;width:0;background:var(--marker);z-index:100}
.author-box{display:grid;grid-template-columns:72px 1fr;gap:20px;margin:56px 0 0;padding:24px;background:#fff;border:1px solid var(--line);border-radius:12px}
.author-box img{width:72px;height:72px;border-radius:10px;object-fit:cover}
.author-box .profile-initials{width:72px;height:72px;font-size:1.5rem}
.author-box h2{font-size:1.15rem;margin:0 0 2px}
.author-box p{margin:6px 0 0;font-size:.95rem;color:var(--muted)}
.related{margin-top:56px}
.related h2{font-size:1.4rem;margin:0 0 20px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related .card h3{font-size:1.05rem}
.post-nav{display:flex;justify-content:space-between;gap:20px;margin:40px 0 0;padding-top:24px;border-top:1px solid var(--line);font-weight:600}
.pagination{display:flex;gap:8px;flex-wrap:wrap;margin:40px 0}
.pagination .page-numbers{padding:8px 14px;border:1px solid var(--line);border-radius:6px;text-decoration:none;color:var(--ink);background:#fff}
.pagination .current{background:var(--ink);color:#fff;border-color:var(--ink)}
.list-feature{margin-bottom:24px}

/* Sidebar */
.sidebar{position:sticky;top:96px;align-self:start}
.sidebar .widget{margin-bottom:36px}
.widget-title{font-size:1.05rem;margin:0 0 12px;padding-bottom:8px;border-bottom:2px solid var(--ink)}
.sidebar ul{list-style:none;margin:0;padding:0}
.sidebar li{padding:8px 0;border-bottom:1px solid var(--line);font-size:.95rem}
.sidebar a{color:var(--ink);text-decoration:none}
.sidebar a:hover{color:var(--plot)}
.search-form{display:flex;gap:8px}
.search-form input[type=search]{flex:1;min-width:0;padding:12px 14px;border:1px solid var(--line);border-radius:8px;font:inherit;background:#fff;color:var(--ink)}
.search-form button{padding:12px 16px;border:0;border-radius:8px;background:var(--marker);color:var(--ink);font:600 15px var(--body);cursor:pointer}

/* Comments */
.comments{margin-top:56px;padding-top:32px;border-top:1px solid var(--line)}
.comment-list{list-style:none;padding:0}
.comment-list .comment{padding:16px 0;border-bottom:1px solid var(--line)}
.comment-form input,.comment-form textarea{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:8px;font:inherit}
.comment-form .submit{width:auto;background:var(--ink);color:#fff;border:0;padding:12px 22px;font-weight:600;cursor:pointer}

/* Footer */
.site-footer{background:var(--ink);color:#C9D2E4;font-size:.95rem}
.site-footer .wrap{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;padding:64px 24px 40px}
.site-footer .brand{color:#fff}
.site-footer .widget-title{color:#fff;border-color:var(--marker)}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:8px 0}
.site-footer a{color:#fff;text-decoration:none}
.site-footer a:hover{color:var(--marker)}
.social{display:flex;gap:10px;margin-top:20px}
.social a{display:grid;place-items:center;width:40px;height:40px;border:1px solid rgba(255,255,255,.25);border-radius:8px}
.social a:hover{background:var(--marker);border-color:var(--marker)}
.social a:hover svg{fill:var(--ink)}
.social svg{width:18px;height:18px;fill:#fff}
.footer-base{border-top:1px solid rgba(255,255,255,.12)}
.footer-base div{max-width:var(--wrap);margin:0 auto;padding:18px 24px;font-size:.85rem}
.empty{padding:48px 0}

/* WP core */
.alignleft{float:left;margin:0 20px 12px 0}
.alignright{float:right;margin:0 0 12px 20px}
.aligncenter{display:block;margin:0 auto}
.alignwide{margin-left:-80px;margin-right:-80px;max-width:calc(100% + 160px)}
.alignfull{margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);max-width:100vw}
.wp-caption-text,figcaption{color:var(--muted);font-size:.88rem;margin-top:6px}

/* Responsive */
@media (max-width:980px){
  .menu-toggle{display:block}
  .header-cta{display:none}
  .nav{display:none;position:absolute;left:0;right:0;top:72px;background:#fff;border-bottom:1px solid var(--line);padding:12px 24px 20px}
  .nav.open{display:block}
  .nav ul{flex-direction:column}
  .nav .sub-menu{position:static;display:flex;border:0;box-shadow:none;padding-left:16px}
  .hero .wrap,.post-grid,.teacher,.layout{grid-template-columns:1fr}
  .hero .wrap{padding:64px 24px 72px;gap:40px}
  .pillars{grid-template-columns:1fr}
  .pillar,.pillar+.pillar{padding:28px 0;border-left:0;border-bottom:1px solid var(--line)}
  .teacher{gap:32px}
  .teacher-photo,.teacher-ph{max-width:280px}
  .sidebar{position:static}
  .related-grid{grid-template-columns:1fr 1fr}
  .site-footer .wrap{grid-template-columns:1fr 1fr}
  .site-footer .wrap>div:first-child{grid-column:1/-1}
  .alignwide{margin-left:0;margin-right:0;max-width:100%}
}
@media (max-width:600px){
  .entry-row{grid-template-columns:1fr;gap:4px}
  .section{padding:60px 0}
  .section-head{flex-direction:column;align-items:start}
  .related-grid,.site-footer .wrap{grid-template-columns:1fr}
  .author-box{grid-template-columns:1fr}
}

/* Block widgets and form fixes */
.sidebar h2,.sidebar .wp-block-heading,.sidebar .wp-block-search__label{font:700 1.05rem/1.2 var(--head);margin:0 0 12px;padding-bottom:8px;border-bottom:2px solid var(--ink);display:block}
.site-footer h2,.site-footer .wp-block-heading{font:700 1.05rem/1.2 var(--head);color:#fff;margin:0 0 12px;padding-bottom:8px;border-bottom:2px solid var(--marker)}
.wp-block-search__inside-wrapper{display:flex;gap:8px}
.wp-block-search__input{flex:1;min-width:0;padding:12px 14px;border:1px solid var(--line);border-radius:8px;font:inherit}
.wp-block-search__button{padding:12px 16px;border:0;border-radius:8px;background:var(--marker);color:var(--ink);font:600 15px var(--body);cursor:pointer;margin:0}
.sidebar .wp-block-latest-posts,.sidebar .wp-block-archives,.sidebar .wp-block-categories{padding:0;list-style:none}
.comment-form input[type=checkbox]{width:auto;margin-right:8px}
.comment-form-cookies-consent{display:flex;align-items:start;font-size:.92rem}

/* Category tiles */
.section-tiles{padding-top:0}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.tile{position:relative;display:flex;flex-direction:column;gap:6px;min-height:170px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--ink);overflow:hidden;transition:border-color .15s,transform .15s}
.tile::after{content:"";position:absolute;left:22px;right:22px;bottom:0;height:4px;background:var(--marker);border-radius:4px 4px 0 0;transform:scaleX(0);transform-origin:left;transition:transform .2s}
.tile:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px)}
.tile:hover::after{transform:scaleX(1)}
.tile-count{font-size:.85rem;color:var(--plot);font-weight:600}
.tile-name{font:700 1.35rem/1.2 var(--head)}
.tile-latest{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:.9rem;color:var(--muted);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tiles .tile:first-child{background:var(--ink);color:#fff;border-color:var(--ink)}
.tiles .tile:first-child .tile-count{color:var(--marker)}
.tiles .tile:first-child .tile-latest{color:#C9D2E4;border-color:rgba(255,255,255,.2)}
@media (prefers-reduced-motion:reduce){.tile,.tile::after{transition:none}}

/* Home: show "What you can learn here" right after the hero */
body.home #main{display:flex;flex-direction:column}
body.home #main > *{order:3}
body.home #main > .hero{order:1}
body.home #main > .section:has(.pillars){order:2}

/* Home: continuous sections, no extra space between them */
body.home #main > .section{padding:0 0 56px}
body.home #main > .section:has(.pillars){padding-top:56px}
body.home #main > .section-alt,
body.home #main > .section:has(.teacher){padding:56px 0}