/* ===========================================================
   WallSpace4K (wallspace4k.com) — design system
   Dark purple/teal/indigo theme. Distinct from both PasteBoard
   (light/orange) and ClipboardManager (dark/blue) sites.
   =========================================================== */

:root{
  --bg:#0c0b14;
  --bg-soft:#12111e;
  --card:#18172a;
  --card-hover:#1e1c31;
  --ink:#f0eeff;
  --ink-soft:#bcb9d9;
  --muted:#7a7695;
  --line:#2a2840;
  --accent:#8b5cf6;
  --accent2:#22d3ee;
  --accent-soft:rgba(139,92,246,0.12);
  --grad:linear-gradient(135deg,#8b5cf6 0%,#22d3ee 100%);
  --good:#34d399;
  --bad:#f87171;
  --radius:18px;
  --radius-sm:10px;
  --shadow:0 16px 48px rgba(0,0,0,.55);
  --shadow-sm:0 4px 18px rgba(0,0,0,.4);
  --maxw:1180px;
  --font-display:"Space Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-body:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;font-family:var(--font-body);color:var(--ink-soft);background:var(--bg);line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;height:auto;}
a{color:var(--accent);text-decoration:none;}
a:hover{text-decoration:underline;}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.18;letter-spacing:-.02em;margin:0 0 .6em;color:var(--ink);font-weight:600;}
h1{font-size:clamp(2.2rem,4.2vw,3.5rem);}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);}
h3{font-size:1.3rem;}
p{margin:0 0 1.1em;}
ul,ol{padding-left:1.3em;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.wrap-narrow{max-width:760px;margin:0 auto;padding:0 24px;}

.skip-link{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:.6em 1em;z-index:999;border-radius:0 0 8px 0;}
.skip-link:focus{left:0;}

/* Gradient text utility */
.gradient-text{background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(12,11,20,.88);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding:14px 0;}
.brand{display:flex;align-items:center;gap:.7rem;font-family:var(--font-display);font-weight:700;font-size:1.1rem;color:var(--ink);}
.brand:hover{text-decoration:none;}
.brand img{height:34px;width:34px;border-radius:9px;object-fit:cover;}
.nav-links{display:flex;align-items:center;gap:1.6rem;list-style:none;margin:0;padding:0;}
.nav-links a{color:var(--ink-soft);font-weight:500;font-size:.93rem;}
.nav-links a:hover{color:var(--ink);text-decoration:none;}
.nav-cta{background:var(--accent);color:#fff!important;padding:.6em 1.2em;border-radius:99px;font-weight:600;font-size:.9rem;}
.nav-cta:hover{background:#7c3aed;text-decoration:none!important;}
.nav-toggle{display:none;}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5em;padding:.85em 1.6em;border-radius:99px;font-weight:600;font-size:.97rem;border:1px solid transparent;cursor:pointer;}
.btn-primary{background:var(--grad);color:#fff;}
.btn-primary:hover{opacity:.88;text-decoration:none;}
.btn-outline{border-color:var(--line);color:var(--ink);background:transparent;}
.btn-outline:hover{background:var(--card);text-decoration:none;}

/* ---------- Hero ---------- */
.hero{padding:72px 0 56px;position:relative;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 70% 60% at 60% 40%,rgba(139,92,246,.18) 0%,transparent 70%),radial-gradient(ellipse 50% 40% at 30% 80%,rgba(34,211,238,.1) 0%,transparent 60%);}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;position:relative;}
.eyebrow{display:inline-flex;align-items:center;gap:.5em;background:var(--accent-soft);border:1px solid rgba(139,92,246,.35);color:#c4b5fd;font-weight:600;font-size:.83rem;padding:.45em 1em;border-radius:99px;margin-bottom:1.3em;}
.hero p.lead{font-size:1.15rem;color:var(--ink-soft);max-width:52ch;}
.hero-actions{display:flex;gap:.9rem;flex-wrap:wrap;margin-top:1.8rem;}
.hero-art img{border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line);}
.trust-row{display:flex;gap:1.6rem;flex-wrap:wrap;margin-top:2.2rem;color:var(--muted);font-size:.86rem;}
.trust-row i{color:var(--accent2);margin-right:.4em;}

/* ---------- Sections ---------- */
section{padding:64px 0;}
.section-tight{padding:40px 0;}
.section-head{max-width:680px;margin:0 0 2.6rem;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.bg-soft{background:var(--bg-soft);}

/* ---------- Cards ---------- */
.grid{display:grid;gap:1.5rem;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.7rem;box-shadow:var(--shadow-sm);}
.card .ico{width:44px;height:44px;border-radius:12px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:1rem;}

/* Blog post cards */
.post-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .15s ease,border-color .15s ease;}
.post-card:hover{transform:translateY(-4px);border-color:rgba(139,92,246,.5);text-decoration:none;}
.post-card .bar{height:3px;background:var(--grad);}
.post-card .pc-body{padding:1.5rem 1.5rem 1.7rem;display:flex;flex-direction:column;gap:.6rem;flex:1;}
.post-tag{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);}
.post-card h3{font-size:1.1rem;margin-bottom:.2rem;color:var(--ink);}
.post-card p{color:var(--ink-soft);font-size:.92rem;margin-bottom:0;}
.post-meta{margin-top:auto;padding-top:.8rem;color:var(--muted);font-size:.82rem;display:flex;gap:.6rem;align-items:center;}

.filter-row{display:flex;gap:.6rem;flex-wrap:wrap;margin-bottom:2.2rem;}
.chip{border:1px solid var(--line);background:var(--card);border-radius:99px;padding:.5em 1.1em;font-size:.85rem;font-weight:600;color:var(--ink-soft);}
.chip.active{background:var(--accent);color:#fff;border-color:var(--accent);}

/* Comparison table */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);}
table{width:100%;border-collapse:collapse;background:var(--card);font-size:.93rem;}
th,td{padding:.9em 1em;text-align:left;border-bottom:1px solid var(--line);}
thead th{background:var(--bg-soft);font-family:var(--font-display);font-weight:600;color:var(--ink);}
tbody tr:last-child td{border-bottom:none;}
td.yes{color:var(--good);font-weight:700;}
td.no{color:var(--bad);font-weight:700;}
.best-pick{background:rgba(139,92,246,.08);}

/* FAQ */
.faq-item{border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:.8rem;overflow:hidden;background:var(--card);}
.faq-item summary{cursor:pointer;list-style:none;padding:1.1em 1.3em;font-weight:600;display:flex;justify-content:space-between;align-items:center;font-family:var(--font-display);color:var(--ink);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:1.4rem;color:var(--accent);font-weight:300;margin-left:1rem;}
.faq-item[open] summary::after{content:"–";}
.faq-item .faq-a{padding:0 1.3em 1.2em;color:var(--ink-soft);}

/* Article */
.article-hero{padding:48px 0 30px;background:var(--bg-soft);border-bottom:1px solid var(--line);}
.breadcrumbs{font-size:.85rem;color:var(--muted);margin-bottom:1.2rem;}
.breadcrumbs a{color:var(--muted);}
.article-meta{display:flex;gap:1rem;flex-wrap:wrap;color:var(--muted);font-size:.88rem;margin-top:1rem;}
.article-cover{margin:-10px 0 2rem;}
.article-cover img{border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line);}
.article-body{max-width:740px;margin:0 auto;}
.article-body h2{margin-top:2.2em;}
.article-body h3{margin-top:1.6em;}
.article-body ul,.article-body ol{margin-bottom:1.3em;}
.article-body li{margin-bottom:.4em;}
.callout{background:var(--accent-soft);border-left:4px solid var(--accent);padding:1.1em 1.3em;border-radius:8px;margin:1.6em 0;color:var(--ink-soft);}
.callout strong{color:#c4b5fd;}
.toc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.4em 1.6em;margin:2em 0;}
.toc h2{font-size:1rem;margin-bottom:.7em;}
.toc ol{margin:0;padding-left:1.2em;}
.toc a{color:var(--ink-soft);font-weight:500;}
.author-box{display:flex;gap:1rem;align-items:center;border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem;margin-top:3rem;background:var(--bg-soft);}
.author-box .avatar{width:48px;height:48px;border-radius:50%;background:var(--accent-soft);border:1px solid rgba(139,92,246,.4);display:flex;align-items:center;justify-content:center;font-weight:700;font-family:var(--font-display);font-size:1.3rem;}
.author-box .name{font-weight:700;color:var(--ink);}
.author-box .role{color:var(--muted);font-size:.85rem;}

/* CTA band */
.cta-band{background:var(--grad);border-radius:24px;padding:3rem;text-align:center;}
.cta-band h2{color:#fff;}
.cta-band p{color:rgba(255,255,255,.85);max-width:50ch;margin:0 auto 1.6rem;}

/* Footer */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);color:var(--muted);padding:56px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2rem;}
.site-footer h4{color:var(--ink-soft);font-size:.92rem;margin-bottom:1rem;}
.site-footer a{color:var(--muted);font-size:.9rem;}
.site-footer a:hover{color:var(--ink);}
.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.55rem;}
.footer-bottom{border-top:1px solid var(--line);margin-top:2.6rem;padding-top:1.6rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;font-size:.82rem;}
.footer-brand{display:flex;align-items:center;gap:.5rem;color:var(--ink);font-family:var(--font-display);font-weight:700;margin-bottom:.8rem;}
.footer-brand img{height:28px;width:28px;border-radius:7px;object-fit:cover;}

/* Misc */
.kicker{color:var(--accent);font-weight:700;font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:.6rem;display:block;}
.divider{height:1px;background:var(--line);margin:2.5rem 0;}
.note{font-size:.85rem;color:var(--muted);}
kbd{background:var(--card);border:1px solid var(--line);border-bottom-width:2px;border-radius:5px;padding:.1em .5em;font-family:ui-monospace,monospace;font-size:.85em;color:var(--ink);}

@media(max-width:920px){.hero-grid{grid-template-columns:1fr;}.grid-3{grid-template-columns:repeat(2,1fr);}.footer-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:680px){
  body{font-size:16px;}
  .nav-links{position:fixed;inset:62px 0 0 0;background:var(--bg);flex-direction:column;align-items:flex-start;padding:2rem 24px;gap:1.4rem;transform:translateX(100%);transition:transform .25s ease;overflow-y:auto;border-top:1px solid var(--line);}
  .nav-links.open{transform:translateX(0);}
  .nav-toggle{display:flex;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;}
  .nav-toggle span{width:22px;height:2px;background:var(--ink);border-radius:2px;}
  .grid-3,.grid-2{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band{padding:2rem 1.4rem;}
  section{padding:44px 0;}
}