/* One Square More — onesquaremore.com
   Single stylesheet. No external fonts, no frameworks. */

:root{
  --ink:#0e0e18;
  --ink-2:#161626;
  --ink-3:#1e1e30;
  --line:#2a2a40;
  --text:#e8e9f0;
  --muted:#a5a8bd;
  --teal:#2ec4b6;
  --gold:#ffbe0b;
  --pink:#e94b8a;
  --white:#fff;
  --radius:14px;
  --maxw:1180px;
  --shadow:0 18px 44px rgba(0,0,0,.45);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ink);color:var(--text);
  font-family:var(--font);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.18;margin:0 0 .5em;font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(2rem,5vw,3.1rem)}
h2{font-size:clamp(1.5rem,3.4vw,2.15rem)}
h3{font-size:1.22rem}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.2em;padding-left:1.2em}
li{margin-bottom:.45em}
hr{border:0;border-top:1px solid var(--line);margin:2.5rem 0}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:4px}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.narrow{max-width:760px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:var(--gold);color:#000;padding:10px 16px;border-radius:8px;z-index:99}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(14,14,24,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;color:var(--white);font-size:1.06rem;letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand .mark{width:30px;height:30px;flex:0 0 30px}
.nav{margin-left:auto;display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.nav a{color:var(--muted);padding:8px 12px;border-radius:8px;font-size:.95rem;font-weight:600}
.nav a:hover,.nav a[aria-current="page"]{color:var(--white);background:var(--ink-3);text-decoration:none}
.nav .cta{background:var(--gold);color:#12121e}
.nav .cta:hover{background:#ffcb3d;color:#12121e}
@media(max-width:760px){
  .hdr{height:auto;padding:12px 0;flex-wrap:wrap;gap:8px}
  .nav{margin-left:0;width:100%;overflow-x:auto;padding-bottom:2px}
  .nav a{white-space:nowrap;padding:7px 10px;font-size:.9rem}
}

/* ---------- hero ---------- */
.hero{position:relative;padding:74px 0 60px;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;opacity:.5;
  background-image:linear-gradient(rgba(46,196,182,.13) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(46,196,182,.13) 1px,transparent 1px);
  background-size:34px 34px;
  mask-image:radial-gradient(ellipse 90% 65% at 50% 0%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 65% at 50% 0%,#000 30%,transparent 78%);
}
.hero .wrap{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:34px}}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);margin-bottom:16px}
.lede{font-size:1.16rem;color:var(--muted);max-width:56ch}
.hero-stack{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.hero-stack picture{display:block}
.hero-stack img{width:100%;border-radius:10px;box-shadow:var(--shadow);transform:rotate(-2deg)}
.hero-stack picture:nth-child(even) img{transform:rotate(2deg)}

/* ---------- buttons ---------- */
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:13px 22px;border-radius:10px;
  font-weight:800;font-size:1rem;border:2px solid transparent;cursor:pointer;transition:.15s;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--gold);color:#12121e}
.btn-primary:hover{background:#ffcb3d;color:#12121e}
.btn-ghost{border-color:var(--line);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal)}
.btn-block{width:100%;justify-content:center}
.btn[aria-disabled="true"]{opacity:.55;pointer-events:none}

/* ---------- sections ---------- */
.section{padding:66px 0;border-bottom:1px solid var(--line)}
.section.alt{background:var(--ink-2)}
.section-head{max-width:64ch;margin-bottom:36px}
.section-head p{color:var(--muted);margin-bottom:0}

/* ---------- book grid ---------- */
.grid{display:grid;gap:26px}
.grid-books{grid-template-columns:repeat(auto-fill,minmax(226px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(270px,1fr))}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}

.card{
  background:var(--ink-2);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:.18s;
}
.card:hover{border-color:#3d3d5c;transform:translateY(-3px)}
.card .thumb{position:relative;display:block;background:var(--ink-3);aspect-ratio:538/696}
.card .thumb picture{display:block;width:100%;height:100%}
.card .thumb img{width:100%;height:100%;object-fit:contain}
.card-body{padding:16px 17px 18px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:1.03rem;margin-bottom:6px;letter-spacing:-.01em}
.card-body h3 a{color:var(--white)}
.card-sub{color:var(--muted);font-size:.87rem;margin:0 0 12px;flex:1}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto}
.price{font-weight:800;color:var(--gold);font-size:1.02rem}
.badge{
  position:absolute;top:10px;left:10px;background:var(--ink);color:var(--gold);
  border:1px solid var(--gold);font-size:.68rem;font-weight:800;letter-spacing:.1em;
  text-transform:uppercase;padding:4px 9px;border-radius:6px;
}
.badge.soon{color:var(--pink);border-color:var(--pink)}
.buy{font-weight:800;font-size:.9rem;color:var(--teal)}

/* ---------- book detail ---------- */
.book-hero{display:grid;grid-template-columns:380px 1fr;gap:48px;padding:52px 0 18px}
@media(max-width:880px){.book-hero{grid-template-columns:1fr;gap:30px;padding-top:34px}}
.book-cover img{border-radius:12px;box-shadow:var(--shadow);width:100%}
.meta-list{list-style:none;padding:0;margin:22px 0 0;border-top:1px solid var(--line)}
.meta-list li{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px solid var(--line);margin:0;font-size:.93rem}
.meta-list span:first-child{color:var(--muted)}
.meta-list span:last-child{font-weight:700;text-align:right}
.pill{display:inline-block;background:var(--ink-3);border:1px solid var(--line);color:var(--muted);font-size:.78rem;font-weight:700;padding:4px 11px;border-radius:99px;margin:0 6px 6px 0}
.price-lg{font-size:2rem;font-weight:800;color:var(--gold);margin:0 0 4px}
.price-note{color:var(--muted);font-size:.86rem;margin:0 0 20px}

.prose h2{margin-top:2em}
.prose h3{margin-top:1.6em}
.prose ul li::marker{color:var(--teal)}

/* ---------- feature blocks ---------- */
.feature{background:var(--ink-2);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.feature .num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:9px;background:var(--teal);color:#08131a;font-weight:900;margin-bottom:14px}
.feature h3{margin-bottom:8px}
.feature p{color:var(--muted);margin:0;font-size:.96rem}

.quote{border-left:4px solid var(--gold);padding:6px 0 6px 20px;color:var(--muted);font-size:1.06rem;margin:0 0 1.4em}

/* ---------- faq ---------- */
.faq details{background:var(--ink-2);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:12px}
.faq summary{cursor:pointer;font-weight:700;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--gold);font-weight:800}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:12px 0 0;color:var(--muted)}

/* ---------- breadcrumb ---------- */
.crumbs{font-size:.85rem;color:var(--muted);padding:18px 0 0}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--teal)}
.crumbs span{margin:0 7px;opacity:.5}

/* ---------- newsletter ---------- */
.signup{background:linear-gradient(140deg,var(--ink-3),var(--ink-2));border:1px solid var(--line);border-radius:18px;padding:36px}
.signup form{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.signup input[type=email]{
  flex:1 1 260px;padding:13px 16px;border-radius:10px;border:1px solid var(--line);
  background:var(--ink);color:var(--text);font-size:1rem;font-family:inherit;
}
.signup input[type=email]:focus{border-color:var(--teal);outline:none}
.form-note{font-size:.82rem;color:var(--muted);margin:12px 0 0}

/* ---------- blog ---------- */
.post-meta{color:var(--muted);font-size:.88rem;margin-bottom:26px}
.post-card{display:flex;flex-direction:column;background:var(--ink-2);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.post-card h3{margin-bottom:8px}
.post-card h3 a{color:var(--white)}
.post-card p{color:var(--muted);font-size:.95rem;margin-bottom:14px}
.toc{background:var(--ink-2);border:1px solid var(--line);border-radius:12px;padding:20px 24px;margin-bottom:32px}
.toc p{font-weight:800;margin-bottom:10px}
.toc ul{margin:0;padding-left:1.1em}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;margin-bottom:1.5em}
table{border-collapse:collapse;width:100%;font-size:.94rem;min-width:520px}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}
th{color:var(--gold);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-2);padding:52px 0 30px;font-size:.93rem}
.foot-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px}
@media(max-width:820px){.foot-grid{grid-template-columns:1fr 1fr;gap:26px}}
.site-footer h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.12em;color:var(--gold);margin-bottom:14px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:8px}
.site-footer a{color:var(--muted)}
.site-footer a:hover{color:var(--white)}
.foot-bottom{border-top:1px solid var(--line);margin-top:38px;padding-top:22px;color:var(--muted);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.86rem}

/* ---------- misc ---------- */
.center{text-align:center}
.mt-0{margin-top:0}
.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:18px;margin:34px 0 0}
.stat{background:var(--ink-2);border:1px solid var(--line);border-radius:12px;padding:20px;text-align:center}
.stat b{display:block;font-size:1.9rem;color:var(--gold);line-height:1.1}
.stat span{color:var(--muted);font-size:.85rem}
.notice{background:var(--ink-3);border:1px solid var(--line);border-left:4px solid var(--teal);border-radius:10px;padding:16px 20px;color:var(--muted);font-size:.93rem}

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