/* Wallpaper Lively X — tutorial stylesheet.
   Palette and structure follow the product pages already on winappcenter.com
   (products/pdf-s), so this tutorial matches the site's dark theme. */

:root{
  --bg:#121316; --card:#1c1d21; --text:#f0f0f2; --text2:#b0b0b6;
  --accent:#60b0e8; --accent2:#1a2d42; --border:#3e4048; --code:#2a2b30;
  --green:#4caf88; --purple:#a78bfa; --gold:#e8b339;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--text);font-family:"Segoe UI",system-ui,-apple-system,"Microsoft YaHei",sans-serif;font-size:15px;line-height:1.75}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
code,.kbd{background:var(--code);border:1px solid var(--border);border-radius:4px;padding:1px 6px;font-size:13px;font-family:Consolas,Monaco,monospace}
.kbd{color:var(--accent)}

/* ── top site navigation ─────────────────────────────────────────────── */
.topnav{background:#0d0d12;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:2px;padding:0 20px;height:44px;font-size:13px;flex-wrap:wrap;overflow:hidden}
.topnav a{color:#c9c9d1;padding:0 12px;line-height:44px;white-space:nowrap}
.topnav a:hover{color:#fff;background:#191921;text-decoration:none}
.topnav .tn-logo{font-weight:700;color:var(--accent);margin-right:8px}

/* ── product header ──────────────────────────────────────────────────── */
.header{background:linear-gradient(135deg,#005fb8 0%,#1a3a6e 50%,#1a1040 100%);padding:22px 32px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.header .logo{width:48px;height:48px;background:linear-gradient(135deg,#60b0e8,#a78bfa);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0}
.header .info{flex:1;min-width:200px}
.header .info h1{font-size:22px;font-weight:600;color:#fff}
.header .info p{font-size:13px;color:rgba(255,255,255,.72);margin-top:2px}
.store-btn img{height:52px;width:auto;border-radius:6px;transition:opacity .2s}
.store-btn:hover img{opacity:.85}
.lang-wrap{display:flex;align-items:center;gap:8px}
.lang-wrap label{font-size:12px;color:rgba(255,255,255,.7)}
.lang-select{background:rgba(0,0,0,.35);color:#fff;border:1px solid rgba(255,255,255,.28);border-radius:8px;padding:8px 10px;font-size:13px;cursor:pointer;min-width:132px}
.lang-select:focus{outline:2px solid var(--accent);outline-offset:1px}
.lang-select option{background:#1c1d21;color:#f0f0f2}

/* ── layout ──────────────────────────────────────────────────────────── */
.main{display:flex;max-width:1400px;margin:0 auto;padding:24px 16px;gap:24px;align-items:flex-start}

/* left: tutorial navigation */
.nav-col{width:250px;flex-shrink:0;position:sticky;top:16px;max-height:calc(100vh - 32px);overflow-y:auto;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:8px 0 12px}
.nav-hd{font-size:11px;font-weight:600;color:#8d8d96;text-transform:uppercase;letter-spacing:1px;padding:16px 18px 6px}
.nav-col a{display:block;padding:9px 18px;font-size:13.5px;font-weight:500;color:#dadade;border-left:3px solid transparent;transition:background .15s,color .15s}
.nav-col a:hover{color:#fff;background:var(--accent2);text-decoration:none}
.nav-col a.active{color:var(--accent);border-left-color:var(--accent);background:var(--accent2)}

/* centre: article */
.wrapper{flex:1;min-width:0}
section{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:26px 30px;margin-bottom:20px;box-shadow:0 2px 8px rgba(0,0,0,.2)}
section h2{font-size:18px;font-weight:600;color:var(--accent);margin:-26px -30px 20px;padding:15px 30px;background:rgba(96,176,232,.05);border-bottom:1px solid var(--border);border-radius:12px 12px 0 0;display:flex;align-items:center;gap:10px}
.sec-icon{width:28px;height:28px;background:var(--accent2);border-radius:6px;display:inline-flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0}

/* question / answer blocks */
.qa{background:#222428;border:1px solid var(--border);border-radius:8px;padding:16px 20px;margin-bottom:14px}
.qa:hover{border-color:#5a5a64}
.qa-q{font-weight:600;color:var(--accent);margin-bottom:8px;font-size:15px}
.qa-a{color:#dcdce2;font-size:14.5px}
.qa-a p{margin-bottom:10px}
.qa-a p:last-child{margin-bottom:0}
.qa-a ul,.qa-a ol{margin:8px 0 10px 22px}
.qa-a li{margin-bottom:6px}
.qa-a b,.qa-a strong{color:#fff}
ol.steps{counter-reset:s;list-style:none;margin-left:0}
ol.steps>li{counter-increment:s;position:relative;padding-left:34px;margin-bottom:9px}
ol.steps>li:before{content:counter(s);position:absolute;left:0;top:1px;width:22px;height:22px;background:var(--accent2);color:var(--accent);border:1px solid var(--border);border-radius:50%;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.qa-a table{width:100%;border-collapse:collapse;margin:8px 0 4px;font-size:13.5px}
.qa-a th,.qa-a td{border:1px solid var(--border);padding:7px 10px;text-align:left;vertical-align:top}
.qa-a th{background:#26272c;color:#fff;font-weight:600}
.tip{border-left:3px solid var(--gold);background:rgba(232,179,57,.07);padding:10px 14px;border-radius:0 6px 6px 0;color:#e9dfc6;font-size:13.5px;margin:10px 0}
.warn{border-left:3px solid #e06c6c;background:rgba(224,108,108,.08);padding:10px 14px;border-radius:0 6px 6px 0;color:#f0cccc;font-size:13.5px;margin:10px 0}

/* screenshots */
.ss-box{background:#18181b;border:1px solid var(--border);border-radius:10px;margin:14px 0 4px;padding:10px;text-align:center;cursor:zoom-in}
.ss-box img{margin:0 auto;border-radius:6px;max-height:520px;object-fit:contain}
.ss-cap{font-size:12px;color:var(--text2);margin-top:8px;text-align:center}

/* inline ad slots */
.ad-box{margin:0 0 20px;padding:6px 0;text-align:center;min-height:90px}
.ad-fixed-left{position:fixed;left:10px;top:170px;width:160px;z-index:5;text-align:center}
.ad-fixed-left .ad-label{font-size:10px;color:#6f6f78;letter-spacing:1px;text-transform:uppercase;margin-bottom:4px}

/* right column: related apps */
.side-right{width:250px;flex-shrink:0;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:16px 14px;position:sticky;top:16px}
.side-right h3{font-size:12px;font-weight:600;color:#8d8d96;text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}
.app-item{display:flex;gap:10px;align-items:center;padding:8px 6px;border-radius:8px;transition:background .15s}
.app-item:hover{background:var(--accent2);text-decoration:none}
.app-item .ic{width:34px;height:34px;border-radius:8px;background:#2a2b30;display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0}
.app-item .nm{font-size:13px;color:#e2e2e8;line-height:1.35}
.app-item .nm small{display:block;color:#8d8d96;font-size:11px}

/* pagination */
.pager{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;align-items:center;margin:22px 0 10px}
.pager a,.pager span{min-width:34px;height:34px;padding:0 10px;display:inline-flex;align-items:center;justify-content:center;background:var(--card);border:1px solid var(--border);border-radius:8px;font-size:13.5px;color:#dcdce2}
.pager a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.pager .cur{background:var(--accent2);border-color:var(--accent);color:var(--accent);font-weight:700}
.pager .gap{border:none;background:none;color:#6f6f78}

/* article footer */
.art-foot{margin-top:16px;padding:16px 18px;background:#191a1f;border:1px solid var(--border);border-radius:10px;font-size:13px;color:var(--text2)}
.art-foot a{color:var(--accent)}
.art-foot .row{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}

/* footer */
.footer{background:#0d0d12;border-top:1px solid var(--border);margin-top:28px;padding:20px;text-align:center;font-size:12.5px;color:#8d8d96}
.footer a{color:#8fb8e0;margin:0 10px}

/* lightbox */
#lightbox{position:fixed;inset:0;background:rgba(0,0,0,.9);display:none;align-items:center;justify-content:center;z-index:100;padding:24px;cursor:zoom-out}
#lightbox.show{display:flex}
#lightbox img{max-width:96vw;max-height:92vh;border-radius:8px}

/* ── responsive ──────────────────────────────────────────────────────── */
@media (max-width:1500px){ .ad-fixed-left{display:none} }
@media (max-width:1180px){
  .main{flex-wrap:wrap;padding:20px 14px}
  .side-right{width:100%;position:static;order:3}
  .side-right h3{margin-bottom:8px}
}
@media (max-width:900px){
  .nav-col{width:100%;position:static;max-height:none;order:1}
  .nav-col a{display:inline-block;border-left:none;border-bottom:3px solid transparent;padding:8px 12px}
  .nav-col a.active{border-left:none;border-bottom-color:var(--accent)}
  .nav-col .nav-hd{display:none}
  .header{padding:18px 16px}
  .header .info h1{font-size:19px}
  section{padding:20px 18px}
  section h2{margin:-20px -18px 18px;padding:14px 18px}
  .store-btn img{height:44px}
  .lang-select{min-width:110px}
}