/* ============================================================
   Pioov — Instagram Story and Post Viewer & Profile Explorer
   Lightweight, system-font, dark-mode-aware stylesheet
   ============================================================ */

:root{
  --bg:#ffffff;
  --bg-soft:#f7f8fa;
  --card:#f7f8fa;
  --header-bg:rgba(255,255,255,.88);
  --fg:#12141d;
  --fg-soft:#39404d;
  --muted:#5b6472;
  --border:#e5e8ee;
  --brand1:#833ab4;
  --brand2:#e1306c;
  --brand3:#f77737;
  --grad:linear-gradient(135deg,#833ab4 0%,#e1306c 52%,#f77737 100%);
  --radius:16px;
  --radius-sm:12px;
  --maxw:1180px;
  --shadow:0 10px 30px rgba(18,20,29,.08);
}

@media (prefers-color-scheme:dark){
  :root{
    --bg:#0b0e15;
    --bg-soft:#0f131d;
    --card:#131926;
    --header-bg:rgba(11,14,21,.86);
    --fg:#e8eaf0;
    --fg-soft:#c3c9d6;
    --muted:#98a1b2;
    --border:#232b3c;
    --shadow:0 10px 30px rgba(0,0,0,.35);
  }
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  background:var(--bg);
  color:var(--fg);
  line-height:1.7;
  font-size:16.5px;
}
img{max-width:100%;height:auto}
a{color:var(--brand2);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:3px solid var(--brand2);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand2);color:#fff}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--brand2);color:#fff;
  padding:10px 16px;border-radius:0 0 10px 0;z-index:100;font-weight:600;
}
.skip-link:focus{left:0}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--header-bg);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.35rem;color:var(--fg);letter-spacing:-.02em}
.logo:hover{text-decoration:none}
.logo .logo-mark{width:32px;height:32px;flex:none}
.logo .poo{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

.nav{display:flex;align-items:center;gap:26px}
.nav a{color:var(--fg-soft);font-weight:600;font-size:.98rem}
.nav a:hover{color:var(--brand2);text-decoration:none}
.nav a.nav-cta{
  background:var(--grad);color:#fff;padding:9px 18px;border-radius:10px;
}
.nav a.nav-cta:hover{filter:brightness(1.08)}

.nav-toggle{
  display:none;background:none;border:1px solid var(--border);border-radius:10px;
  padding:8px 10px;cursor:pointer;color:var(--fg);
}
.nav-toggle svg{display:block}

@media (max-width:820px){
  .nav-toggle{display:inline-flex}
  .nav{
    display:none;position:absolute;top:64px;left:0;right:0;
    background:var(--bg);border-bottom:1px solid var(--border);
    flex-direction:column;align-items:flex-start;padding:18px 20px;gap:16px;
  }
  .nav.open{display:flex}
}

/* ---------- Hero ---------- */
.hero{padding:76px 0 56px;text-align:center;background:
  radial-gradient(900px 420px at 15% -10%,rgba(131,58,180,.14),transparent 60%),
  radial-gradient(900px 420px at 85% -10%,rgba(247,119,55,.12),transparent 60%);
}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--border);background:var(--card);
  padding:7px 16px;border-radius:999px;font-size:.86rem;font-weight:600;color:var(--muted);
}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grad);display:inline-block}
.hero h1{
  font-size:clamp(2.1rem,5.2vw,3.4rem);
  line-height:1.14;letter-spacing:-.03em;margin:22px auto 16px;max-width:900px;
}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{max-width:680px;margin:0 auto;color:var(--muted);font-size:1.12rem}
.hero .tip{max-width:680px;margin:10px auto 0;color:var(--muted);font-size:.95rem}

.hero-ctas{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin:30px auto 6px}

.btn{
  display:inline-block;background:var(--grad);color:#fff;border:none;cursor:pointer;
  padding:14px 26px;border-radius:var(--radius-sm);font-weight:700;font-size:1rem;
  text-decoration:none;transition:transform .15s ease,box-shadow .15s ease,filter .15s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow);filter:brightness(1.06);text-decoration:none}
.btn-sm{padding:9px 16px;font-size:.92rem;border-radius:10px}
.btn-hero{padding:16px 34px;font-size:1.06rem;border-radius:14px}
.btn-outline{background:var(--card);color:var(--brand1);border:2px solid var(--brand1)}
.btn-outline:hover{background:rgba(225,48,108,.08);filter:none}

.tip a{color:var(--brand1);font-weight:600}

.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:22px}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;
  background:var(--card);border:1px solid var(--border);font-size:.9rem;font-weight:600;color:var(--fg-soft);
}
.chip svg{flex:none}

/* ---------- Sections ---------- */
.section{padding:64px 0}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-title{font-size:clamp(1.55rem,3vw,2.15rem);letter-spacing:-.02em;margin:0 0 10px;text-align:center}
.section-sub{text-align:center;color:var(--muted);max-width:720px;margin:0 auto 40px}

.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media (max-width:980px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.grid-3,.grid-2{grid-template-columns:1fr}}

.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;transition:transform .15s ease,box-shadow .15s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.card h3{margin:14px 0 8px;font-size:1.12rem;letter-spacing:-.01em}
.card p{margin:0;color:var(--muted);font-size:.97rem}
.card a{color:var(--brand2);font-weight:600}
.card-icon{
  width:46px;height:46px;border-radius:12px;background:var(--grad);
  display:grid;place-items:center;color:#fff;flex:none;
}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:800px){.steps{grid-template-columns:1fr}}
.step{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.step-num{
  width:42px;height:42px;border-radius:50%;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:1.1rem;margin-bottom:14px;
}
.step h3{margin:0 0 8px;font-size:1.1rem}
.step p{margin:0;color:var(--muted);font-size:.97rem}

.why-list{list-style:none;margin:0;padding:0;display:grid;gap:14px;max-width:760px;margin-inline:auto}
.why-list li{display:flex;gap:12px;align-items:flex-start;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px 18px}
.why-list svg{flex:none;margin-top:3px}
.why-list strong{color:var(--fg)}

/* ---------- Blog cards ---------- */
.blog-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
@media (max-width:1080px){.blog-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.blog-grid{grid-template-columns:1fr}}
.blog-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .15s ease,box-shadow .15s ease;
}
.blog-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.blog-card .bc-thumb{width:100%;aspect-ratio:1200/630;object-fit:cover;display:block;background:var(--bg-soft)}
.blog-card .bc-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.blog-card h3{margin:0 0 8px;font-size:1.05rem;line-height:1.35;letter-spacing:-.01em}
.blog-card h3 a{color:var(--fg)}
.blog-card h3 a:hover{color:var(--brand2);text-decoration:none}
.blog-card p{margin:0 0 14px;color:var(--muted);font-size:.92rem;flex:1}
.bc-meta{font-size:.82rem;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap}
.bc-more{font-weight:700;font-size:.9rem}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--grad);border-radius:var(--radius);padding:44px 36px;text-align:center;color:#fff;
}
.cta-band h2{margin:0 0 10px;font-size:clamp(1.4rem,3vw,2rem);letter-spacing:-.02em}
.cta-band p{margin:0 auto 22px;max-width:620px;color:rgba(255,255,255,.92)}
.cta-band .btn{background:#fff;color:#c1255c}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--border);background:var(--bg-soft);padding:52px 0 28px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:34px}
@media (max-width:880px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr}}
.site-footer h4{margin:0 0 14px;font-size:.95rem;letter-spacing:.02em;text-transform:uppercase;color:var(--muted)}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.site-footer a{color:var(--fg-soft);font-size:.94rem}
.site-footer a:hover{color:var(--brand2)}
.footer-brand p{color:var(--muted);font-size:.93rem;margin:12px 0 0;max-width:340px}
.footer-bottom{
  border-top:1px solid var(--border);margin-top:38px;padding-top:22px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  color:var(--muted);font-size:.86rem;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb{font-size:.9rem;color:var(--muted);margin-bottom:18px;display:flex;flex-wrap:wrap;gap:6px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand2)}
.breadcrumb .sep{color:var(--border)}

/* ---------- Article / page layout ---------- */
.page-wrap{max-width:800px;margin:0 auto;padding:44px 20px 20px}
.post-header{text-align:center;margin-bottom:30px}
.post-header h1{font-size:clamp(1.8rem,4vw,2.6rem);line-height:1.2;letter-spacing:-.02em;margin:14px 0 14px}
.post-meta{
  display:flex;justify-content:center;flex-wrap:wrap;gap:8px 18px;
  color:var(--muted);font-size:.9rem;
}
.post-meta .avatar{
  width:26px;height:26px;border-radius:50%;background:var(--grad);
  display:inline-grid;place-items:center;color:#fff;font-size:.72rem;font-weight:800;margin-right:6px;vertical-align:middle;
}
.cover{width:100%;border-radius:var(--radius);display:block;margin:0 0 34px;border:1px solid var(--border)}

.content{font-size:1.03rem;color:var(--fg-soft)}
.content p{margin:0 0 1.05rem}
.content h2{
  color:var(--fg);font-size:1.55rem;letter-spacing:-.02em;line-height:1.25;
  margin:2.4rem 0 1rem;padding-top:.4rem;
}
.content h3{color:var(--fg);font-size:1.22rem;margin:1.9rem 0 .8rem}
.content ul,.content ol{margin:0 0 1.2rem;padding-left:1.5rem}
.content li{margin-bottom:.45rem}
.content a{color:var(--brand2);font-weight:600}
.content strong{color:var(--fg)}
.content blockquote{
  margin:1.4rem 0;padding:14px 20px;border-left:4px solid var(--brand2);
  background:var(--card);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--fg);
}
.content code{
  background:var(--card);border:1px solid var(--border);border-radius:6px;
  padding:2px 6px;font-size:.9em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.content hr{border:none;border-top:1px solid var(--border);margin:2.2rem 0}

.table-scroll{overflow-x:auto;margin:1.3rem 0;border:1px solid var(--border);border-radius:var(--radius-sm)}
.content table{border-collapse:collapse;width:100%;min-width:520px;font-size:.95rem}
.content th,.content td{border-bottom:1px solid var(--border);padding:10px 14px;text-align:left;vertical-align:top}
.content th{background:var(--card);color:var(--fg);font-weight:700}
.content tr:last-child td{border-bottom:none}

/* ---------- Table of contents ---------- */
.toc{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px 26px;margin:0 0 34px;
}
.toc-title{margin:0 0 12px;font-size:1.05rem;color:var(--fg);display:flex;align-items:center;gap:9px}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:toc}
.toc ol ol{padding-left:22px;margin-top:6px}
.toc li{margin:5px 0;counter-increment:toc}
.toc a{color:var(--fg-soft);font-size:.96rem;display:inline}
.toc a:hover{color:var(--brand2)}
.toc > ol > li > a{font-weight:600;color:var(--fg)}
.toc > ol > li > a::before{
  content:counter(toc) ". ";color:var(--brand2);font-weight:800;
}

/* ---------- FAQ ---------- */
.faq-list{margin:1rem 0 1.6rem}
details.faq{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);
  margin:0 0 12px;
}
details.faq summary{
  cursor:pointer;padding:16px 20px;font-weight:700;color:var(--fg);list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:1.02rem;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{
  content:"+";flex:none;width:26px;height:26px;border-radius:50%;
  background:var(--grad);color:#fff;display:grid;place-items:center;font-size:1rem;font-weight:800;
}
details.faq[open] summary::after{content:"\2212"}
details.faq .faq-a{padding:0 20px 18px;color:var(--fg-soft)}
details.faq .faq-a p{margin:0 0 .6rem}

/* ---------- Article extras ---------- */
.cta-box{
  background:var(--grad);border-radius:var(--radius);color:#fff;
  padding:30px 28px;margin:36px 0;text-align:center;
}
.cta-box h2{margin:0 0 8px;font-size:1.45rem;color:#fff}
.cta-box p{margin:0 0 18px;color:rgba(255,255,255,.93)}
.cta-box .btn{background:#fff;color:#c1255c}

.related{margin:44px 0 0}
.related h2{font-size:1.4rem;letter-spacing:-.02em;margin:0 0 18px}
.related .blog-grid{grid-template-columns:repeat(3,1fr)}
@media (max-width:820px){.related .blog-grid{grid-template-columns:1fr}}

.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:34px 0 0;
}
@media (max-width:620px){.post-nav{grid-template-columns:1fr}}
.post-nav a{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:14px 18px;display:block;color:var(--fg-soft);font-size:.93rem;
}
.post-nav a:hover{text-decoration:none;border-color:var(--brand2)}
.post-nav .dir{display:block;font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px}
.post-nav .next{text-align:right}

/* ---------- Misc pages ---------- */
.error-page{text-align:center;padding:90px 20px}
.error-page h1{font-size:clamp(3rem,10vw,5.5rem);margin:0;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.error-code{color:var(--muted)}

.form-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;max-width:620px;
}
.form-card label{display:block;font-weight:700;font-size:.92rem;margin:14px 0 6px;color:var(--fg)}
.form-card input,.form-card select,.form-card textarea{
  width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--border);
  background:var(--bg);color:var(--fg);font:inherit;font-size:.98rem;
}
.form-card textarea{min-height:140px;resize:vertical}
.form-card .form-note{font-size:.85rem;color:var(--muted);margin-top:10px}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}