/* B2Airline – shared styles for every page */
:root{
  --ink:#0b0d12;
  --night:#111c22;        /* background of the desktop hero image */
  --night-mobile:#06151a; /* background of the mobile hero image */
  --teal:#1f7b70;         /* "B2" in the logo */
  --teal-light:#5fb59c;
  --muted:#5b6470;
  --line:#e6e8eb;
  --footer:#111c22;
  --font: Arial, Helvetica, sans-serif;
  --max: 1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:#fff;-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
a{color:inherit}
img{max-width:100%;display:block}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* Header */
.header{position:sticky;top:0;z-index:20;background:var(--night);border-bottom:1px solid rgba(255,255,255,.06)}
.header-inner{max-width:1400px;margin:0 auto;height:62px;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.brand img{height:32px;width:auto}
.nav{display:flex;align-items:center;gap:22px}
.nav-link{color:#fff;text-decoration:none;font-size:15px;opacity:.85}
.nav-link:hover,.nav-link[aria-current="page"]{opacity:1}
.btn{display:inline-flex;align-items:center;justify-content:center;font:700 15px var(--font);border-radius:8px;padding:10px 18px;border:0;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn-teal{background:var(--teal);color:#fff}
.btn-teal:hover{background:#26907f}
.btn-outline{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn-outline:hover{border-color:var(--teal);color:var(--teal)}
.btn[disabled]{opacity:.6;cursor:wait}

/* Hero (homepage): the image already contains the logo and tagline, so its proportions are kept
   exactly and the form is placed under the tagline in percentages. */
.hero{position:relative;width:100%;aspect-ratio:2493/1090;background:var(--night) url("/assets/hero-desktop.jpg") center/100% 100% no-repeat}
.form-wrap{position:absolute;right:8.5%;top:67.5%;width:max(340px,34%)}

/* Subscribe form (hero and end-of-issue box) */
.form-row{display:flex;background:#fff;border-radius:10px;padding:4px;transition:box-shadow .3s}
.form-row.flash{box-shadow:0 0 0 4px var(--teal-light)}
.form-row input{flex:1;min-width:0;border:0;outline:0;font:16px var(--font);padding:12px;color:var(--ink);background:transparent}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.consent{display:flex;gap:8px;align-items:flex-start;margin:10px 2px 0;font-size:13px;line-height:1.4;color:rgba(255,255,255,.8);cursor:pointer}
.consent input{margin:2px 0 0;accent-color:var(--teal);flex:none}
.consent a{color:#fff}
.form-error{margin:8px 2px 0;font-size:13px;color:#ffb4a8}
.form-error:empty{display:none}
.form-done{display:none;margin:0;padding:14px 16px;background:rgba(255,255,255,.1);border-radius:10px;color:#fff;font-size:15px}
#subscribe{scroll-margin-top:120px}

/* Issue lists (homepage, archive, "more issues") */
.issues{max-width:var(--max);margin:0 auto;padding:56px 24px 88px}
.issues-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:28px}
.issues h1,.issues h2{margin:0;font-size:28px;letter-spacing:-.01em}
.issues-head p{margin:0;color:var(--muted);font-size:15px}
.issue-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.issue{border-bottom:1px solid var(--line)}
.issue a{display:grid;grid-template-columns:280px 1fr;gap:32px;padding:26px 0;text-decoration:none;align-items:center}
.issue a:hover h3{color:var(--teal)}
.thumb{aspect-ratio:1200/630;width:100%;border-radius:8px;overflow:hidden;background:var(--night)}
.thumb img{width:100%;height:100%;object-fit:cover}
.meta{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin:0 0 8px}
.issue h3{margin:0 0 8px;font-size:22px;line-height:1.3;transition:color .15s}
.issue .sub{margin:0;color:var(--muted);font-size:16px;line-height:1.5}
.read{display:inline-block;margin-top:12px;font-size:14px;font-weight:700;color:var(--teal)}
.empty{color:var(--muted);padding:24px 0}
.all-link{display:inline-block;margin-top:24px;font-weight:700;color:var(--teal);text-decoration:none}
.all-link:hover{text-decoration:underline}

/* Issue page */
.post{max-width:720px;margin:0 auto;padding:44px 24px 8px}
.back{display:inline-block;font-size:14px;color:var(--muted);text-decoration:none;margin-bottom:28px}
.back:hover{color:var(--teal)}
.post h1{font-size:clamp(28px,4.2vw,40px);line-height:1.2;letter-spacing:-.015em;margin:6px 0 14px}
.post .subtitle{font-size:20px;line-height:1.45;color:var(--muted);margin:0 0 14px}
.byline{font-size:15px;color:var(--muted);margin:0;padding-bottom:26px;border-bottom:1px solid var(--line)}
.content{font-size:18px;line-height:1.7;padding-top:10px}
.content p{margin:0 0 18px}
.content p:empty{display:none}
.content h2,.content h3,.content h4{font-size:24px;line-height:1.3;margin:40px 0 12px;letter-spacing:-.01em}
.content h4{font-size:20px}
.content .box{border:2px solid var(--teal);border-radius:12px;padding:6px 24px 4px;margin:24px 0 8px}
.content .box h3{margin-top:16px}
.content ul,.content ol{padding-left:22px;margin:0 0 18px}
.content li{margin:0 0 16px}
.content li p{margin:0 0 6px}
.content a{color:var(--teal);text-decoration:underline;text-underline-offset:2px}
.content img{height:auto;border-radius:8px;margin:24px auto}
.content blockquote{border-left:3px solid var(--teal);margin:24px 0;padding:2px 0 2px 20px;color:#333}
.content hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.content table{border-collapse:collapse;width:100%;font-size:16px;margin:0 0 18px}
.content th,.content td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.share{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:36px 0 0;padding-top:24px;border-top:1px solid var(--line)}
.share span{font-size:14px;color:var(--muted);margin-right:4px}
.share .btn{font-size:14px;padding:9px 14px}

/* End-of-issue subscribe box */
.cta{background:var(--night);color:#fff;border-radius:16px;padding:36px 36px 30px;margin:44px 0 0}
.cta h2{margin:0 0 8px;font-size:26px;letter-spacing:-.01em}
.cta p.cta-text{margin:0 0 20px;color:rgba(255,255,255,.8);font-size:16px;line-height:1.5}
.cta .form{max-width:480px}
.more{max-width:var(--max);margin:0 auto;padding:56px 24px 80px}
.more h2{font-size:24px;margin:0 0 20px}

/* Not found */
.notfound{max-width:720px;margin:0 auto;padding:96px 24px;text-align:center}
.notfound h1{font-size:34px;margin:0 0 12px}
.notfound p{color:var(--muted);font-size:17px;margin:0 0 28px}

/* Footer */
.footer{background:var(--footer);color:#fff}
.footer-inner{max-width:var(--max);margin:0 auto;padding:44px 24px;display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;align-items:center}
.footer-brand img{height:30px;width:auto}
.footer small{display:block;margin-top:14px;opacity:.6;font-size:13px}
.footer-links{display:flex;gap:22px;align-items:center;font-size:15px}
.footer-links a{text-decoration:none;opacity:.85}
.footer-links a:hover{opacity:1}
.li-icon{width:20px;height:20px;fill:#fff;display:block}

/* Mobile */
@media (max-width: 760px){
  .header{background:var(--night-mobile)}
  .header-inner{padding:0 16px}
  .brand img{height:28px}
  .nav{gap:16px}
  .hero{aspect-ratio:745/1283;background:var(--night-mobile) url("/assets/hero-mobile.jpg") center/100% 100% no-repeat}
  .form-wrap{left:6%;right:6%;top:72.7%;width:auto}
  .issues,.more{padding:48px 20px 64px}
  .issues-head{flex-direction:column;gap:6px}
  .issue a{grid-template-columns:1fr;gap:14px}
  .post{padding:32px 20px 8px}
  .content{font-size:17px}
  .cta{padding:28px 22px 24px;border-radius:14px}
  .footer-inner{flex-direction:column;align-items:flex-start}
}