/*
Theme Name: BioStarHub
Description: Responsive blog-style website. Header with logo and category menu, home page grid of posts, post details page, footer with categories and useful links. Create posts from Posts > Add New.
Version: 2.0
License: GNU General Public License v2 or later
Text Domain: ph-site
*/

:root{--ink:#14202b;--muted:#5b6b78;--accent:#12b5cb;--accent-dark:#0b8798;--bg:#f4fbfd;--card:#fff;--line:#dcecf0;--radius:16px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;overflow-x:hidden;overflow-wrap:break-word}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.ph-wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
.ph-narrow{max-width:780px}
.ph-main{min-height:60vh;padding:36px 0 64px}

/* ---------- Header ---------- */
.ph-header{position:relative;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.ph-header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px}
.ph-brand{display:flex;align-items:center}
.ph-site-title{font-size:1.5rem;font-weight:800;letter-spacing:.3px}
.ph-accent{color:var(--accent)}
.ph-brandlink,.ph-foot-brand{display:flex;align-items:center;gap:10px}
.ph-logo-mark{width:40px;height:40px;flex:none;border-radius:10px;transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.ph-brandlink:hover .ph-logo-mark{transform:rotate(-10deg) scale(1.08)}
.ph-foot-brand{font-size:1.1rem!important;gap:8px}
.ph-foot-brand .ph-logo-mark{width:28px;height:28px;border-radius:8px}
.custom-logo-link img{max-height:48px;width:auto}
.ph-cats ul{display:flex;flex-wrap:wrap;gap:6px;justify-content:flex-end}
.ph-cats a{display:block;padding:7px 14px;border-radius:999px;font-weight:600;font-size:.95rem;color:var(--ink);transition:background .15s,color .15s}
.ph-cats a:hover,.ph-cats .current-cat>a,.ph-cats .is-home>a{background:var(--accent);color:#fff}
/* Categories dropdown */
.ph-has-dd{position:relative}
.ph-dd-toggle{font:inherit;font-weight:600;font-size:.95rem;color:var(--ink);background:none;border:0;cursor:pointer;padding:7px 14px;border-radius:999px;display:flex;align-items:center;gap:8px;transition:background .15s,color .15s}
.ph-dd-toggle:hover,.ph-has-dd:focus-within>.ph-dd-toggle,.ph-has-dd.is-open>.ph-dd-toggle,.ph-has-dd.current>.ph-dd-toggle{background:var(--accent);color:#fff}
.ph-caret{width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s}
.ph-has-dd:hover .ph-caret,.ph-has-dd.is-open .ph-caret{transform:rotate(225deg) translate(-1px,-1px)}
.ph-cats .ph-dropdown{display:block;position:absolute;right:0;top:calc(100% + 8px);min-width:220px;max-height:60vh;overflow-y:auto;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 16px 36px rgba(20,32,43,.14);padding:8px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s,transform .2s,visibility .2s;z-index:120}
.ph-dropdown::before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px}
.ph-has-dd:hover>.ph-dropdown,.ph-has-dd:focus-within>.ph-dropdown,.ph-has-dd.is-open>.ph-dropdown{opacity:1;visibility:visible;transform:none}
.ph-dropdown li+li{margin-top:2px}
.ph-cats .ph-dropdown a{border-radius:10px;padding:9px 12px;font-size:.93rem}
.ph-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center}
.ph-bars,.ph-bars::before,.ph-bars::after{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;position:relative;transition:transform .2s}
.ph-bars::before,.ph-bars::after{content:"";position:absolute;left:0}
.ph-bars::before{top:-6px}
.ph-bars::after{top:6px}

/* ---------- Post grid (home / archive) ---------- */
.ph-filter{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 26px;animation:ph-fade-up .6s cubic-bezier(.2,.7,.2,1) backwards}
.ph-filter a{padding:8px 18px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:600;font-size:.92rem;white-space:nowrap;transition:background .2s,color .2s,border-color .2s,transform .2s}
.ph-filter a:hover{border-color:var(--accent);color:var(--accent-dark);transform:translateY(-2px)}
.ph-filter a.is-active{background:var(--accent);border-color:var(--accent);color:#fff}
.ph-archive-head{margin:0 0 28px}
.ph-archive-head h1{font-size:clamp(1.6rem,4vw,2.4rem);margin:0 0 6px;display:inline-block;border-bottom:4px solid var(--accent);padding-bottom:6px}
.ph-archive-head p{margin:8px 0 0;color:var(--muted)}
.ph-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ph-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 6px 18px rgba(18,181,203,.07);transition:transform .2s,box-shadow .2s}
.ph-card:hover{transform:translateY(-4px);box-shadow:0 14px 28px rgba(18,181,203,.16)}
.ph-card-link{display:flex;flex-direction:column;height:100%}
.ph-thumb{aspect-ratio:16/10;background:linear-gradient(135deg,#12b5cb,#7fe0ee);overflow:hidden}
.ph-thumb img{width:100%;height:100%;object-fit:cover}
.ph-thumb--empty{display:grid;place-items:center;color:#fff;font-size:3rem;font-weight:800}
.ph-card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.ph-card-cat{font-size:.72rem;text-transform:uppercase;letter-spacing:.12em;font-weight:700;color:var(--accent-dark)}
.ph-card h2{font-size:1.2rem;line-height:1.3;margin:0}
.ph-card p{margin:0;color:var(--muted);font-size:.95rem}
.ph-card-date{margin-top:auto;padding-top:6px;font-size:.82rem;color:var(--muted)}
.ph-empty{background:#fff;border:1px dashed var(--line);border-radius:var(--radius);padding:40px 24px;text-align:center;color:var(--muted)}

.navigation.pagination{margin-top:36px}
.nav-links{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.nav-links .page-numbers{min-width:42px;height:42px;padding:0 12px;display:grid;place-items:center;border:1px solid var(--line);border-radius:10px;background:#fff;font-weight:600}
.nav-links .page-numbers.current,.nav-links a.page-numbers:hover{background:var(--accent);border-color:var(--accent);color:#fff}

/* ---------- Single post / page ---------- */
.ph-back{display:inline-block;margin-bottom:20px;font-weight:600;color:var(--accent-dark)}
.ph-back:hover{text-decoration:underline}
.ph-meta{font-size:.85rem;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px 14px;margin-bottom:10px}
.ph-meta a{color:var(--accent-dark);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:.75rem}
.ph-title{font-size:clamp(1.7rem,5vw,2.8rem);line-height:1.2;margin:0 0 14px}
.ph-lead{font-size:1.15rem;color:var(--muted);margin:0 0 24px}
.ph-hero-img{margin:0 0 28px;border-radius:var(--radius);overflow:hidden}
.ph-hero-img img{width:100%}
.ph-hero-img--small{width:100%;max-width:240px;aspect-ratio:4/5;margin:0 auto 28px;box-shadow:0 10px 24px rgba(18,181,203,.18)}
.ph-hero-img--small img{height:100%;object-fit:cover}
.ph-content{font-size:1.05rem}
.ph-content h2,.ph-content h3,.ph-content h4{line-height:1.3;margin:1.8em 0 .6em}
.ph-content p,.ph-content ul,.ph-content ol{margin:0 0 1.2em}
.ph-content ul{list-style:disc;padding-left:1.4em}
.ph-content ol{padding-left:1.4em}
.ph-content a{color:var(--accent-dark);text-decoration:underline}
.ph-content img{border-radius:12px;margin:1.2em 0}
.ph-content blockquote{margin:1.4em 0;padding:4px 20px;border-left:4px solid var(--accent);color:var(--muted);background:#fff;border-radius:0 12px 12px 0}
.ph-content pre{overflow-x:auto;background:var(--ink);color:#e8f6f9;padding:16px;border-radius:12px}
.ph-content table{display:block;overflow-x:auto;border-collapse:collapse;width:100%}
.ph-content th,.ph-content td{border:1px solid var(--line);padding:8px 12px}
.ph-content iframe,.ph-content video{max-width:100%}
.alignleft{float:left;margin:0 20px 10px 0}
.alignright{float:right;margin:0 0 10px 20px}
.aligncenter{margin-left:auto;margin-right:auto}
.wp-caption{max-width:100%}
.wp-caption-text,figcaption{font-size:.85rem;color:var(--muted);text-align:center}
.ph-tags{margin-top:28px;font-size:.9rem}
.ph-tags a{display:inline-block;margin:0 6px 6px 0;padding:4px 12px;border:1px solid var(--line);border-radius:999px;background:#fff}
.ph-postnav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}
.ph-postnav a{display:block;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:12px;font-weight:600}
.ph-postnav a:hover{border-color:var(--accent)}
.ph-postnav .next{text-align:right;grid-column:2}
.ph-postnav .prev{grid-column:1}

/* ---------- Footer ---------- */
.ph-footer{background:#fff;color:var(--ink);padding:52px 0 0;border-top:3px solid var(--accent)}
.ph-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px}
.ph-footer h3,.ph-footer h4{color:var(--ink);margin:0 0 14px;font-size:1.05rem}
.ph-footer h4{display:inline-block;border-bottom:3px solid var(--accent);padding-bottom:4px}
.ph-footer p{margin:0;color:var(--muted);max-width:340px}
.ph-footer li{margin-bottom:8px;font-weight:500}
.ph-footer a:hover{color:var(--accent-dark)}
.ph-copy{margin-top:40px;padding:18px 20px;text-align:center;border-top:1px solid var(--line);font-size:.88rem;color:var(--muted);background:var(--bg)}

/* ---------- Profile details (on post page) ---------- */
.ph-sec{margin-top:44px}
.ph-related{margin-top:64px}
.ph-sec-title{font-size:clamp(1.3rem,3vw,1.8rem);margin:0 0 18px;display:inline-block;border-bottom:4px solid var(--accent);padding-bottom:6px;line-height:1.3}
.ph-bio-box{background:#fff;color:#000;border:1px solid var(--line);border-radius:20px;padding:32px 28px;box-shadow:0 6px 18px rgba(18,181,203,.08)}
.ph-bio-box .ph-sec-title{color:#000}
.ph-details{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.ph-info{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px 28px;box-shadow:0 6px 18px rgba(18,181,203,.08)}
.ph-info small{display:block;text-transform:uppercase;letter-spacing:.12em;font-size:.72rem;color:var(--accent-dark);font-weight:700;margin-bottom:6px}
.ph-info strong{font-size:1.25rem}
.ph-about{max-width:760px}
.ph-timeline{border-left:3px solid var(--accent)}
.ph-timeline li{padding:0 0 22px 24px;position:relative}
.ph-timeline li::before{content:"";position:absolute;left:-9px;top:6px;width:15px;height:15px;border-radius:50%;background:var(--accent)}
.ph-timeline b{color:var(--accent-dark)}

/* ---------- Footer button + request form ---------- */
.ph-footer a.ph-btn{display:inline-block;margin-top:14px;padding:7px 14px;border-radius:999px;background:var(--accent);color:#fff;font-weight:600;font-size:.8rem;transition:background .2s,transform .2s,box-shadow .2s}
.ph-footer a.ph-btn:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(18,181,203,.3)}
.ph-form-intro{color:var(--muted);margin:0 0 22px}
.ph-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:0 6px 18px rgba(18,181,203,.08)}
.ph-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px}
.ph-field{display:flex;flex-direction:column;gap:6px;min-width:0}
.ph-field.full{grid-column:1/-1}
.ph-field>label{font-weight:700;font-size:.9rem}
.ph-field input[type=text],.ph-field input[type=email],.ph-field input[type=file],.ph-field textarea{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;color:var(--ink);background:#fbfeff;transition:border-color .2s,box-shadow .2s}
.ph-field input:focus,.ph-field textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px rgba(18,181,203,.18)}
.ph-field textarea{resize:vertical}
.ph-field small{color:var(--muted);font-size:.82rem}
.ph-bio-rows .ph-bio-row{display:grid;grid-template-columns:110px 1fr 40px;gap:8px;margin-bottom:8px}
.ph-row-del,.ph-add-row{font:inherit;cursor:pointer;border:1px solid var(--line);background:#fff;border-radius:10px;transition:border-color .2s,color .2s}
.ph-row-del:hover,.ph-add-row:hover{border-color:var(--accent);color:var(--accent-dark)}
.ph-add-row{align-self:flex-start;padding:8px 16px;font-weight:600}
.ph-check{display:flex;gap:10px;align-items:flex-start;font-weight:500;font-size:.92rem;cursor:pointer}
.ph-check input{margin-top:4px;flex:none}
.ph-field>label.ph-check{font-weight:500;font-size:.92rem}
.ph-submit{margin-top:22px;width:100%;padding:14px 22px;border:0;border-radius:999px;background:var(--accent);color:#fff;font:inherit;font-weight:700;font-size:1.02rem;cursor:pointer;transition:background .2s,transform .2s,box-shadow .2s}
.ph-submit:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 10px 22px rgba(18,181,203,.3)}
.ph-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.ph-notice{padding:16px 18px;border-radius:12px;margin:0 0 20px;font-size:.98rem}
.ph-notice--ok{background:#e6f9fc;border:1px solid #9be3ee;color:#07515c}
.ph-notice--err{background:#fff1f0;border:1px solid #ffc2bd;color:#8a1f17}

/* ---------- Animations ---------- */
@keyframes ph-fade-up{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}
@keyframes ph-fade-in{from{opacity:0}to{opacity:1}}
@keyframes ph-drop{from{opacity:0;transform:translateY(-16px)}to{opacity:1;transform:none}}
@keyframes ph-zoom-out{from{transform:scale(1.08)}to{transform:scale(1)}}
@keyframes ph-slide{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

.ph-header{animation:ph-drop .5s ease backwards;transition:box-shadow .3s ease,background .3s ease}
.ph-header-inner{transition:min-height .3s ease}
.ph-main{animation:ph-fade-in .6s ease .1s backwards}
.ph-archive-head h1,.ph-back,.ph-meta,.ph-title,.ph-lead{animation:ph-fade-up .7s cubic-bezier(.2,.7,.2,1) backwards}
.ph-meta{animation-delay:.08s}
.ph-title{animation-delay:.16s}
.ph-lead{animation-delay:.24s}
.ph-hero-img{animation:ph-fade-up .8s cubic-bezier(.2,.7,.2,1) .3s backwards}
.ph-hero-img img{animation:ph-zoom-out 1.4s ease .3s backwards}
.ph-cats.is-open{animation:ph-slide .25s ease}

/* scroll reveal (class added by assets/anim.js) */
.js .ph-reveal{opacity:0}
.js .ph-reveal.is-in{opacity:1;animation:ph-fade-up .7s cubic-bezier(.2,.7,.2,1) var(--d,0ms) backwards}

/* hover effects */
.ph-thumb img{transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.ph-card:hover .ph-thumb img{transform:scale(1.08)}
.ph-thumb--empty span{transition:transform .4s ease}
.ph-card:hover .ph-thumb--empty span{transform:scale(1.15) rotate(-4deg)}
.ph-card h2{transition:color .2s}
.ph-card:hover h2{color:var(--accent-dark)}
.ph-site-title{transition:color .2s}
.ph-site-title:hover{color:var(--accent-dark)}
.ph-back{transition:transform .2s ease}
.ph-back:hover{transform:translateX(-4px);text-decoration:none}
.ph-postnav a{transition:transform .2s ease,border-color .2s,box-shadow .2s}
.ph-postnav a:hover{transform:translateY(-3px);box-shadow:0 10px 20px rgba(18,181,203,.12)}
.ph-tags a{transition:background .2s,color .2s,border-color .2s}
.ph-tags a:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.ph-footer li a{display:inline-block;transition:transform .2s ease,color .2s}
.ph-footer li a:hover{transform:translateX(5px)}
.ph-info{transition:transform .25s ease,box-shadow .25s ease}
.ph-info:hover{transform:translateY(-4px);box-shadow:0 14px 28px rgba(18,181,203,.16)}
.nav-links .page-numbers{transition:background .2s,color .2s,transform .2s}
.nav-links a.page-numbers:hover{transform:translateY(-2px)}

/* reading progress bar + back-to-top (created by assets/anim.js) */
.ph-top{position:fixed;right:20px;bottom:20px;z-index:150;width:46px;height:46px;border:0;border-radius:50%;background:var(--accent);color:#fff;font-size:1.3rem;line-height:1;cursor:pointer;box-shadow:0 8px 20px rgba(18,181,203,.35);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .3s,transform .3s,visibility .3s,background .2s}
.ph-top.is-show{opacity:1;visibility:visible;transform:none}
.ph-top:hover{background:var(--accent-dark);transform:translateY(-3px)}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .ph-reveal{opacity:1}
}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .ph-grid{grid-template-columns:repeat(2,1fr)}
  .ph-footer-grid{grid-template-columns:1fr 1fr}
  .ph-footer-grid>div:first-child{grid-column:1/-1}
}
@media(max-width:768px){
  .ph-toggle{display:flex}
  .ph-header-inner{flex-wrap:wrap;min-height:60px;padding-top:8px;padding-bottom:8px}
  .ph-cats{display:none;width:100%;order:3;padding:6px 0 12px}
  .ph-cats.is-open{display:block}
  .ph-cats ul{flex-direction:column;gap:2px;justify-content:flex-start}
  .ph-cats a{border-radius:10px;padding:10px 14px}
  .ph-dd-toggle{width:100%;justify-content:space-between;border-radius:10px;padding:10px 14px}
  .ph-cats .ph-dropdown{display:none;position:static;opacity:1;visibility:visible;transform:none;min-width:0;max-height:none;border:0;box-shadow:none;padding:0 0 0 14px;background:transparent;transition:none}
  .ph-dropdown::before{display:none}
  .ph-has-dd.is-open>.ph-dropdown{display:block}  .ph-toggle[aria-expanded="true"] .ph-bars{background:transparent}
  .ph-toggle[aria-expanded="true"] .ph-bars::before{transform:translateY(6px) rotate(45deg)}
  .ph-toggle[aria-expanded="true"] .ph-bars::after{transform:translateY(-6px) rotate(-45deg)}
  .ph-main{padding:24px 0 48px}
  .ph-details{gap:12px}
  .ph-info{padding:16px;border-radius:14px}
  .ph-info strong{font-size:1.05rem}
}
@media(max-width:600px){
  .ph-grid{grid-template-columns:1fr;gap:18px}
  .ph-footer-grid{grid-template-columns:1fr;gap:28px}
  .ph-postnav{grid-template-columns:1fr}
  .ph-postnav .next,.ph-postnav .prev{grid-column:1;text-align:left}
  .alignleft,.alignright{float:none;margin:1em auto}
}
@media(max-width:600px){.ph-form{padding:20px 16px}.ph-form-grid{grid-template-columns:1fr}.ph-bio-rows .ph-bio-row{grid-template-columns:84px 1fr 38px}.ph-filter{flex-wrap:nowrap;overflow-x:auto;margin-left:-20px;margin-right:-20px;padding:2px 20px 10px;-webkit-overflow-scrolling:touch;scrollbar-width:none}.ph-filter::-webkit-scrollbar{display:none}.ph-hero-img--small{max-width:200px}.ph-bio-box{padding:26px 20px;border-radius:16px}.ph-sec{margin-top:34px}}
@media(max-width:380px){.ph-details{grid-template-columns:1fr}}