/* ===========================================================================
   Shared styles for the ΦΜΑ content cluster (guide articles + methodology).
   Mirrors the calculator's design tokens so the whole site reads as one brand.
   The calculator (index.html) keeps its own inline CSS (single-file tool).
   =========================================================================== */
:root{
  --bg:#f4f6fb; --card:#ffffff; --ink:#0f1b2d; --muted:#5b6b80; --line:#e3e8f0;
  --brand:#0b5fff; --brand-dark:#0a4bd1; --ok:#0a8a4a; --ok-bg:#e8f7ee;
  --warn:#b25e00; --warn-bg:#fff4e5;
  --shadow:0 1px 2px rgba(16,32,64,.06),0 8px 24px rgba(16,32,64,.06);
  --r:14px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  line-height:1.65;font-size:16px;
}
.wrap{max-width:760px;margin:0 auto;padding:0 16px 64px}

/* header / nav — matches the calculator */
header.top{display:flex;align-items:center;gap:10px;padding:16px 0 8px;flex-wrap:wrap}
.logo{font-weight:800;font-size:1.05rem;letter-spacing:-.2px;color:var(--ink);
  text-decoration:none}
.logo span{color:var(--brand)}
.badge{margin-left:auto;font-size:.72rem;font-weight:700;color:var(--ok);
  background:var(--ok-bg);padding:4px 10px;border-radius:999px;white-space:nowrap}
nav.main{display:flex;gap:18px;padding:6px 0 4px;font-size:.9rem;font-weight:600;
  border-bottom:1px solid var(--line);margin-bottom:18px;flex-wrap:wrap}
nav.main a{color:var(--muted);text-decoration:none}
nav.main a:hover,nav.main a[aria-current=page]{color:var(--brand)}

/* breadcrumb */
.crumb{font-size:.8rem;color:var(--muted);margin:18px 0 6px}
.crumb a{color:var(--muted);text-decoration:none}
.crumb a:hover{color:var(--brand)}
.crumb span{color:var(--ink)}

/* article typography */
article h1{font-size:1.7rem;line-height:1.25;margin:6px 0 10px;letter-spacing:-.5px}
article h2{font-size:1.28rem;margin:34px 0 10px;letter-spacing:-.3px}
article h3{font-size:1.08rem;margin:24px 0 6px}
article p{margin:0 0 14px}
article ul,article ol{margin:0 0 16px;padding-left:22px}
article li{margin:6px 0}
article a{color:var(--brand)}
.lede{color:var(--muted);font-size:1.08rem;margin:0 0 8px}
.updated{font-size:.8rem;color:var(--muted);margin:0 0 22px}

/* tables */
.table-wrap{overflow-x:auto;margin:0 0 18px}
table{border-collapse:collapse;width:100%;font-size:.93rem;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
th{background:#eef2fb;font-weight:700}
tr:last-child td{border-bottom:0}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}

/* callouts */
.note,.tip,.warn{border-radius:12px;padding:14px 16px;margin:0 0 18px;font-size:.95rem}
.note{background:#eef2fb;border:1px solid #d8e2fb}
.tip{background:var(--ok-bg);border:1px solid #cdeedb}
.warn{background:var(--warn-bg);border:1px solid #ffe2bf}
.note strong,.tip strong,.warn strong{display:block;margin-bottom:2px}

/* CTA back to calculator */
.cta{display:block;background:var(--brand);color:#fff;text-decoration:none;
  text-align:center;font-weight:700;padding:15px;border-radius:12px;margin:26px 0;
  box-shadow:var(--shadow)}
.cta:hover{background:var(--brand-dark)}
.cta small{display:block;font-weight:500;opacity:.85;font-size:.82rem;margin-top:2px}

/* related links / interlinking */
.related{margin:34px 0 0;border-top:1px solid var(--line);padding-top:18px}
.related h2{font-size:1.05rem;margin:0 0 12px}
.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:520px){.related-grid{grid-template-columns:1fr}}
.related-grid a{display:block;background:var(--card);border:1px solid var(--line);
  border-radius:12px;padding:13px 15px;text-decoration:none;color:var(--ink);
  font-weight:600;font-size:.92rem;transition:.15s}
.related-grid a:hover{border-color:var(--brand);color:var(--brand)}

/* sources list */
.sources{font-size:.9rem}
.sources li{margin:8px 0}

/* reserved ad slots — hidden until body.ads-enabled (set by site.js when an
   AdSense client id is configured). min-height reserves space → no layout shift. */
.ad-slot{display:none;margin:22px 0;text-align:center;overflow:hidden}
.ads-enabled .ad-slot{display:block}
.ad-slot::before{content:"Διαφήμιση";display:block;font-size:.65rem;letter-spacing:.08em;
  text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.ad-slot[data-ad="in-article"]{min-height:280px}
.ad-slot[data-ad="footer"]{min-height:120px}
.ad-slot ins{display:block}

/* affiliate / partner box (use rel="sponsored nofollow" on the link) */
.partner-box{border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:12px;padding:14px 16px;margin:22px 0;background:var(--card)}
.partner-box .tag{font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;
  color:var(--muted);font-weight:700}
.partner-box a.btn{display:inline-block;margin-top:8px;background:var(--brand);color:#fff;
  text-decoration:none;font-weight:700;padding:9px 16px;border-radius:9px}
.partner-box a.btn:hover{background:var(--brand-dark)}

.disclaimer{font-size:.8rem;color:var(--muted);margin-top:30px;
  border-top:1px solid var(--line);padding-top:16px}
.disclaimer a{color:var(--brand)}
footer{margin-top:24px;font-size:.82rem;color:var(--muted);text-align:center}
footer a{color:var(--brand);text-decoration:none}