/*
Theme Name:   Bio Pulse
Description:  Simple, dark and modern Astra child theme. Designed homepage and a clean reading layout for posts — no extra fields, no extra widgets. Posts show exactly as written in the editor.
Author:       Firoz Ansari
Template:     astra
Version:      2.0.0
Requires at least: 5.8
Requires PHP: 7.4
License:      GPL-2.0-or-later
Text Domain:  biotheme
*/

:root{
	--bg:#0b0b12; --surface:#14141e; --surface-2:#1b1b28; --line:rgba(255,255,255,.08); --line-2:rgba(255,255,255,.14);
	--ink:#f3f3f8; --ink-2:#c8c8d6; --muted:#8c8ca3;
	--accent:#8b5cf6; --accent-2:#ec4899; --grad:linear-gradient(120deg,var(--accent),var(--accent-2));
	--head:'Sora',system-ui,sans-serif; --sans:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
	--r:18px; --wrap:1240px;
	color-scheme:dark;
}

/* Base */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;overflow-x:clip;background:var(--bg)}
body.bt{margin:0;background:var(--bg);color:var(--ink);font:400 16.5px/1.7 var(--sans);-webkit-font-smoothing:antialiased}
body.bt-menu-open{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s}
a:hover{color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
h1,h2,h3,h4{font-family:var(--head);font-weight:700;line-height:1.2;letter-spacing:-.02em;margin:0;color:var(--ink)}
button{font:inherit;cursor:pointer}
::selection{background:var(--accent);color:#fff}
.bt-wrap{max-width:var(--wrap);margin:0 auto;padding:0 22px}
.screen-reader-text{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}
.bt-skip{position:absolute;left:-999px;top:8px;z-index:999;background:#fff;color:#000;padding:8px 14px;border-radius:8px}
.bt-skip:focus{left:8px}
.bt-img{width:100%;height:100%;object-fit:cover}
.bt-ph{display:grid;place-items:center;font:800 clamp(24px,4vw,56px)/1 var(--head);color:#fff;background:radial-gradient(circle at 30% 20%,hsl(var(--h) 70% 58%),hsl(calc(var(--h) + 50) 60% 22%))}
.bt-btn{display:inline-block;background:var(--grad);color:#fff;border:0;border-radius:999px;padding:13px 24px;font:600 15px/1 var(--sans)}
.bt-btn:hover{filter:brightness(1.1);color:#fff}
.bt-main{min-height:60vh}

/* Header */
.bt-header{position:sticky;top:0;z-index:60;background:rgba(11,11,18,.82);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid transparent;transition:border-color .3s}
.admin-bar .bt-header{top:32px}
.bt-scrolled .bt-header{border-bottom-color:var(--line)}
.bt-bar{display:flex;align-items:center;gap:24px;min-height:72px}
.bt-sitename{margin:0;font:800 23px/1 var(--head);letter-spacing:-.03em}
.bt-sitename a{display:inline-flex;align-items:center;gap:10px}
.bt-sitename a::before{content:"";width:24px;height:24px;border-radius:7px;background:var(--grad)}
.custom-logo{max-height:46px;width:auto}
.bt-nav{margin-left:auto}
.bt-menu{display:flex;gap:2px;list-style:none;margin:0;padding:0}
.bt-menu>li{position:relative}
.bt-menu a{display:block;padding:10px 14px;border-radius:999px;font:500 14.5px/1 var(--sans);color:var(--ink-2)}
.bt-menu a:hover{background:rgba(255,255,255,.06);color:#fff}
.bt-menu .current-menu-item>a,.bt-menu .current-menu-ancestor>a{background:rgba(255,255,255,.1);color:#fff}
.bt-menu .sub-menu{position:absolute;right:0;top:calc(100% + 8px);min-width:210px;list-style:none;margin:0;padding:8px;background:var(--surface);border:1px solid var(--line-2);border-radius:14px;box-shadow:0 20px 40px -18px rgba(0,0,0,.8);opacity:0;visibility:hidden;transition:.18s}
.bt-menu .sub-menu::before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px}
.bt-menu li:hover>.sub-menu,.bt-menu li:focus-within>.sub-menu{opacity:1;visibility:visible}
.bt-menu .sub-menu a{border-radius:9px}
.bt-menu-btn{display:none;margin-left:auto;width:42px;height:42px;place-items:center;border:1px solid var(--line-2);border-radius:12px;background:rgba(255,255,255,.04);color:var(--ink)}
.bt-drawer{position:fixed;top:0;right:0;bottom:0;width:min(330px,88vw);background:var(--surface);border-left:1px solid var(--line);z-index:200;padding:16px 20px;overflow-y:auto;transform:translateX(102%);visibility:hidden;transition:transform .3s ease,visibility .3s}
.bt-menu-open .bt-drawer{transform:none;visibility:visible}
.bt-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.bt-drawer-head .bt-menu-btn{display:grid;margin:0}
.bt-drawer-menu{list-style:none;margin:0;padding:0}
.bt-drawer-menu a{display:block;padding:13px 2px;border-bottom:1px solid var(--line);font:600 16.5px/1.3 var(--head)}
.bt-drawer-menu .sub-menu{list-style:none;padding-left:14px}
.bt-drawer-menu .sub-menu a{font:500 15px/1.3 var(--sans);color:var(--ink-2)}
.bt-scrim{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:150;opacity:0;visibility:hidden;transition:.3s}
.bt-menu-open .bt-scrim{opacity:1;visibility:visible}

/* Shared */
.bt-cat{display:inline-block;padding:5px 10px;border-radius:999px;background:rgba(139,92,246,.18);border:1px solid rgba(139,92,246,.4);color:#ddd2ff;font:600 11.5px/1 var(--sans);margin-bottom:12px}
.bt-meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted)}
.bt-dot{width:3px;height:3px;border-radius:50%;background:currentColor}
.bt-excerpt{color:var(--ink-2);margin:10px 0 14px}

/* Cards */
.bt-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.bt-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:transform .3s,border-color .3s}
.bt-card:hover{transform:translateY(-5px);border-color:rgba(139,92,246,.5)}
.bt-card-img{display:block;aspect-ratio:4/3.4;overflow:hidden;background:var(--surface-2)}
.bt-card-img .bt-img{transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.bt-card:hover .bt-img{transform:scale(1.05)}
.bt-card-body{padding:16px 18px 18px;display:flex;flex-direction:column;align-items:flex-start;flex:1}
.bt-card-title{font-size:17px;line-height:1.32;font-weight:600;margin-bottom:12px}
.bt-card .bt-meta{margin-top:auto}

/* Home bento */
.bt-bento{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:250px 250px;gap:18px;padding-top:30px}
.bt-tile-0{grid-column:span 2;grid-row:span 2}
.bt-tile a{position:relative;display:block;height:100%;border-radius:22px;overflow:hidden;background:var(--surface-2);isolation:isolate}
.bt-tile-img{position:absolute;inset:0;z-index:-2}
.bt-tile-img .bt-img{transition:transform .8s cubic-bezier(.2,.7,.2,1)}
.bt-tile a:hover .bt-img{transform:scale(1.05)}
.bt-tile a::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(0,0,0,0) 35%,rgba(5,5,10,.9))}
.bt-tile .bt-ph{align-items:start;padding-top:16%}
.bt-tile-body{position:absolute;left:0;right:0;bottom:0;padding:20px}
.bt-tile .bt-cat{background:rgba(10,10,16,.55);border-color:rgba(255,255,255,.2);color:#fff;backdrop-filter:blur(8px);margin-bottom:10px}
.bt-tile-title{font-size:18px;line-height:1.28;color:#fff}
.bt-tile-0 .bt-tile-body{padding:28px}
.bt-tile-0 .bt-tile-title{font-size:clamp(24px,2.8vw,36px);font-weight:800;line-height:1.12}
.bt-sec{padding-top:64px}
.bt-sec:last-child{padding-bottom:80px}
.bt-sec-title{display:flex;align-items:center;gap:12px;font-size:clamp(22px,2.6vw,28px);margin-bottom:24px}
.bt-sec-title::before{content:"";width:6px;height:26px;border-radius:6px;background:var(--grad)}

/* Archive */
.bt-arch-head{padding-top:48px}
.bt-arch-title{font-size:clamp(34px,5.5vw,60px);font-weight:800;letter-spacing:-.035em;line-height:1.05}
.bt-arch-desc{color:var(--ink-2);margin-top:12px;max-width:70ch}
.bt-arch{padding-top:32px;padding-bottom:80px}
.bt-empty{color:var(--muted)}
.bt-pagination{margin-top:50px}
.bt-pagination ul{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.bt-pagination a,.bt-pagination span{display:grid;place-items:center;min-width:44px;height:44px;padding:0 12px;border-radius:12px;border:1px solid var(--line-2);background:var(--surface);font:600 15px/1 var(--sans)}
.bt-pagination .current{background:var(--grad);border-color:transparent;color:#fff}

/* Single */
.bt-s-head{max-width:860px;text-align:center;padding-top:50px;padding-bottom:30px}
.bt-s-title{font-size:clamp(30px,4.8vw,52px);font-weight:800;letter-spacing:-.035em;line-height:1.1;margin-bottom:16px}
.bt-s-head .bt-meta{justify-content:center}
.bt-s-img{max-width:1000px;margin:0 auto 10px}
.bt-s-img .bt-img{border-radius:22px;max-height:620px}
.bt-s-body{max-width:760px;padding-top:30px;padding-bottom:80px}

/* Content */
.bt-content{font-size:18px;line-height:1.8;color:var(--ink-2)}
.bt-content>*{margin:0 0 1.15em}
.bt-content h2{font-size:clamp(24px,2.8vw,30px);margin:1.7em 0 .6em;color:#fff}
.bt-content h3{font-size:clamp(20px,2.3vw,23px);margin:1.4em 0 .5em;color:#fff}
.bt-content h4{font-size:18px;margin:1.2em 0 .4em;color:#fff}
.bt-content a{color:#c4b5fd;text-decoration:underline;text-decoration-color:rgba(139,92,246,.6);text-underline-offset:3px}
.bt-content a:hover{color:#fff}
.bt-content strong{color:#fff}
.bt-content ul,.bt-content ol{padding-left:1.3em}
.bt-content li{margin-bottom:.45em}
.bt-content li::marker{color:var(--accent-2)}
.bt-content blockquote{margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--accent);border-radius:0 14px 14px 0;background:var(--surface);color:#fff;font-size:19px}
.bt-content blockquote p:last-child{margin:0}
.bt-content img{border-radius:14px}
.bt-content figure{margin:1.6em 0}
.bt-content figcaption{font-size:14px;color:var(--muted);text-align:center;margin-top:10px}
.bt-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 1.4em}
.bt-content table{width:100%;border-collapse:collapse;font-size:15.5px;background:var(--surface);margin:0}
.bt-content th,.bt-content td{padding:12px 14px;border:1px solid var(--line-2);text-align:left;vertical-align:top}
.bt-content thead th{background:var(--surface-2);color:#fff;font-weight:600}
.bt-content tbody th{color:#fff}
.bt-content .wp-block-table{margin:0 0 1.4em}
.bt-content .wp-block-table .bt-table-wrap{margin:0}
.bt-content hr{border:0;height:1px;background:var(--line-2);margin:2em 0}
.bt-content code{background:rgba(255,255,255,.08);padding:2px 6px;border-radius:6px;font-size:.88em}
.bt-content .aligncenter{margin-left:auto;margin-right:auto}
.bt-content .alignleft{float:left;margin:.3em 1.4em 1em 0;max-width:45%}
.bt-content .alignright{float:right;margin:.3em 0 1em 1.4em;max-width:45%}
.bt-content::after{content:"";display:table;clear:both}

/* Comments */
.bt-comments{margin-top:50px;padding-top:30px;border-top:1px solid var(--line)}
.bt-comments-title,.comment-reply-title{font-size:22px;margin-bottom:18px}
.bt-comment-list{list-style:none;margin:0 0 30px;padding:0}
.bt-comment-list .children{list-style:none;padding-left:24px}
.bt-comment-list .comment-body{padding:16px;margin-bottom:12px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.bt-comment-list .avatar{border-radius:50%;float:left;margin-right:12px}
.comment-form label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
.comment-form input[type=text],.comment-form input[type=email],.comment-form input[type=url],.comment-form textarea{width:100%;padding:12px 14px;border:1px solid var(--line-2);border-radius:12px;background:rgba(255,255,255,.04);color:var(--ink);font:inherit}

/* 404 */
.bt-404{text-align:center;padding-top:70px;padding-bottom:90px}
.bt-404-n{font:800 clamp(100px,20vw,190px)/.9 var(--head);letter-spacing:-.05em;margin:0 0 10px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.bt-404 .bt-btn{margin-top:22px}

/* Footer */
.bt-footer{border-top:1px solid var(--line);background:#07070c}
.bt-footer-in{display:flex;align-items:center;flex-wrap:wrap;gap:16px 28px;padding-top:30px;padding-bottom:30px}
.bt-foot-menu{display:flex;flex-wrap:wrap;gap:6px 22px;list-style:none;margin:0;padding:0;font-size:14.5px;color:var(--ink-2)}
.bt-copy{margin:0 0 0 auto;font-size:13.5px;color:var(--muted)}

/* Responsive */
@media (max-width:1060px){
	.bt-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:900px){
	.bt-nav{display:none}
	.bt-menu-btn{display:grid}
	.bt-bento{grid-template-columns:1fr 1fr;grid-template-rows:none;grid-auto-rows:220px}
	.bt-tile-0{grid-column:span 2;grid-row:span 1;height:320px}
	.bt-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:782px){.admin-bar .bt-header{top:46px}}
@media (max-width:600px){
	.admin-bar .bt-header{top:0}
	body.bt{font-size:16px}
	.bt-wrap{padding:0 16px}
	.bt-bar{min-height:62px}
	.bt-bento{gap:12px;padding-top:18px;grid-auto-rows:200px}
	.bt-tile-body{padding:14px}
	.bt-tile-title{font-size:15.5px}
	.bt-tile-0{height:300px}
	.bt-tile-0 .bt-tile-body{padding:20px}
	.bt-grid{gap:14px}
	.bt-card-body{padding:12px 12px 14px}
	.bt-card-title{font-size:15px}
	.bt-card .bt-meta time,.bt-card .bt-meta .bt-dot{display:none}
	.bt-s-head{text-align:left;padding-top:30px;padding-bottom:22px}
	.bt-s-head .bt-meta{justify-content:flex-start}
	.bt-s-img{padding:0}
	.bt-s-img .bt-img{border-radius:0}
	.bt-content{font-size:17px}
	.bt-content .alignleft,.bt-content .alignright{float:none;margin:1em auto;max-width:100%}
	.bt-footer-in{flex-direction:column;align-items:flex-start}
	.bt-copy{margin:0}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important}}