/*
Theme Name: MerchantFees
Theme URI: https://merchantfees.co.uk
Author: MerchantFees
Author URI: https://merchantfees.co.uk
Description: Custom theme for MerchantFees.co.uk - data-driven UK merchant fee calculators across General, Online/E-commerce, Card Machine, BNPL and Tap to Pay providers. Navy palette, automatic topic + brand interlinking, and a single central slot for an embedded lead form.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: merchantfees
*/

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root{
  --mf-navy-900:#0a1a36;
  --mf-navy-800:#0e2348;
  --mf-navy-700:#143058;
  --mf-navy-600:#1d4276;
  --mf-blue-500:#2b6cb0;
  --mf-blue-400:#3f86d4;
  --mf-blue-050:#eaf1fb;
  --mf-gold:#f0b429;
  --mf-gold-soft:#fbe9bf;
  --mf-gold-dark:#b9820c;
  --mf-ink:#16202e;
  --mf-muted:#5d6b80;
  --mf-faint:#8a97aa;
  --mf-line:#dce3ee;
  --mf-line-soft:#e9eef6;
  --mf-surface:#ffffff;
  --mf-bg:#f5f7fb;
  --mf-bg-tint:#eef2f9;
  --mf-good:#1f9d6b;
  --mf-good-bg:#e7f6ee;
  --mf-warn:#b9820c;
  --mf-warn-bg:#fdf4e1;
  --mf-radius:14px;
  --mf-radius-sm:9px;
  --mf-radius-lg:20px;
  --mf-shadow:0 1px 2px rgba(10,26,54,.06), 0 10px 34px rgba(10,26,54,.09);
  --mf-shadow-sm:0 1px 2px rgba(10,26,54,.06), 0 3px 12px rgba(10,26,54,.06);
  --mf-maxw:1140px;
  --mf-font-display:"Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --mf-font-body:"Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;
}

/* ============================================================
   BASE
   ============================================================ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body.mf-body{
  margin:0;
  font-family:var(--mf-font-body);
  color:var(--mf-ink);
  background:var(--mf-bg);
  font-size:16.5px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--mf-blue-500);text-decoration:none;}
a:hover{color:var(--mf-navy-700);text-decoration:underline;}
h1,h2,h3,h4{font-family:var(--mf-font-display);color:var(--mf-navy-800);line-height:1.18;font-weight:600;margin:0 0 .5em;letter-spacing:-.012em;}
h1{font-size:clamp(1.85rem,1.2rem + 2.4vw,3rem);font-weight:700;}
h2{font-size:clamp(1.4rem,1.05rem + 1.3vw,2rem);}
h3{font-size:1.22rem;}
p{margin:0 0 1rem;}
:focus-visible{outline:3px solid var(--mf-gold);outline-offset:2px;border-radius:4px;}

.mf-wrap{max-width:var(--mf-maxw);margin:0 auto;padding:0 22px;}
.mf-eyebrow{font-family:var(--mf-font-display);text-transform:uppercase;letter-spacing:.16em;font-size:.72rem;font-weight:600;color:var(--mf-blue-500);}
.mf-skip{position:absolute;left:-999px;}
.mf-skip:focus{left:12px;top:12px;z-index:999;background:#fff;padding:10px 16px;border-radius:8px;box-shadow:var(--mf-shadow);}

/* ============================================================
   HEADER / NAV
   ============================================================ */
.mf-header{background:var(--mf-navy-900);color:#fff;position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(255,255,255,.08);}
.mf-header__bar{display:flex;align-items:center;gap:18px;min-height:66px;}
.mf-brand{display:flex;align-items:center;gap:11px;font-family:var(--mf-font-display);font-weight:700;font-size:1.18rem;color:#fff;letter-spacing:-.02em;}
.mf-brand:hover{text-decoration:none;color:#fff;}
.mf-brand__mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--mf-gold),var(--mf-gold-dark));display:grid;place-items:center;color:var(--mf-navy-900);font-weight:700;font-size:1rem;flex:0 0 auto;}
.mf-brand b{color:var(--mf-gold);}
.mf-nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap;}
.mf-nav a{color:#cdd8ea;font-weight:500;font-size:.95rem;padding:8px 12px;border-radius:8px;}
.mf-nav a:hover{color:#fff;background:rgba(255,255,255,.08);text-decoration:none;}
.mf-nav a.is-current{color:var(--mf-navy-900);background:var(--mf-gold);}
.mf-nav-toggle{display:none;margin-left:auto;background:rgba(255,255,255,.1);color:#fff;border:0;border-radius:8px;padding:9px 12px;font-size:1rem;cursor:pointer;}

@media(max-width:880px){
  .mf-nav-toggle{display:block;}
  .mf-nav{display:none;flex-direction:column;width:100%;margin:0;padding:8px 0 12px;}
  .mf-nav.is-open{display:flex;}
  .mf-header__bar{flex-wrap:wrap;}
}

/* ============================================================
   BUTTONS
   ============================================================ */
.mf-btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--mf-font-display);font-weight:600;font-size:.98rem;padding:12px 20px;border-radius:10px;border:0;cursor:pointer;transition:transform .12s ease, box-shadow .12s ease, background .15s ease;}
.mf-btn:hover{text-decoration:none;transform:translateY(-1px);}
.mf-btn--gold{background:var(--mf-gold);color:var(--mf-navy-900);box-shadow:0 6px 18px rgba(240,180,41,.35);}
.mf-btn--gold:hover{background:#ffc341;color:var(--mf-navy-900);}
.mf-btn--navy{background:var(--mf-navy-700);color:#fff;}
.mf-btn--navy:hover{background:var(--mf-navy-600);color:#fff;}
.mf-btn--ghost{background:transparent;color:var(--mf-navy-700);border:1.5px solid var(--mf-line);}
.mf-btn--ghost:hover{border-color:var(--mf-navy-600);color:var(--mf-navy-800);}

/* ============================================================
   HERO (front + archives)
   ============================================================ */
.mf-hero{background:radial-gradient(1200px 500px at 12% -10%,var(--mf-navy-700),var(--mf-navy-900) 60%);color:#fff;padding:64px 0 76px;position:relative;overflow:hidden;}
.mf-hero::after{content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;background:radial-gradient(circle,rgba(240,180,41,.18),transparent 65%);pointer-events:none;}
.mf-hero .mf-eyebrow{color:var(--mf-gold);}
.mf-hero h1{color:#fff;max-width:18ch;margin-top:10px;}
.mf-hero p{color:#c2cfe4;font-size:1.12rem;max-width:54ch;margin-top:6px;}
.mf-hero__cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px;}
.mf-hero .mf-btn--ghost{color:#fff;border-color:rgba(255,255,255,.4);}
.mf-hero .mf-btn--ghost:hover{border-color:var(--mf-gold);color:#fff;}

/* topic chips */
.mf-topicgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(195px,1fr));gap:14px;margin-top:40px;}
.mf-topiccard{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--mf-radius);padding:18px 18px 20px;color:#fff;transition:background .15s ease,transform .15s ease,border-color .15s;}
.mf-topiccard:hover{background:rgba(255,255,255,.1);border-color:var(--mf-gold);transform:translateY(-2px);text-decoration:none;color:#fff;}
.mf-topiccard__n{font-family:var(--mf-font-display);font-size:.78rem;color:var(--mf-gold);letter-spacing:.05em;}
.mf-topiccard h3{color:#fff;font-size:1.08rem;margin:6px 0 4px;}
.mf-topiccard span{color:#9fb0c9;font-size:.86rem;}

/* ============================================================
   LAYOUT SHELL
   ============================================================ */
.mf-main{padding:42px 0 60px;}
.mf-breadcrumb{font-size:.85rem;color:var(--mf-muted);margin-bottom:18px;}
.mf-breadcrumb a{color:var(--mf-muted);}
.mf-breadcrumb a:hover{color:var(--mf-navy-700);}
.mf-breadcrumb span{color:var(--mf-faint);margin:0 7px;}

.mf-layout{display:grid;grid-template-columns:1fr 308px;gap:34px;align-items:start;}
@media(max-width:980px){.mf-layout{grid-template-columns:1fr;}}

/* ============================================================
   PAGE HEAD (calculator pages)
   ============================================================ */
.mf-pagehead{margin-bottom:24px;}
.mf-pagehead .mf-eyebrow{color:var(--mf-blue-500);}
.mf-pagehead h1{margin-top:8px;}
.mf-pagehead .mf-lede{font-size:1.1rem;color:var(--mf-muted);max-width:62ch;}
.mf-tagrow{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 0;}
.mf-tag{font-size:.78rem;font-weight:600;padding:4px 11px;border-radius:999px;background:var(--mf-blue-050);color:var(--mf-navy-700);border:1px solid var(--mf-line);}

/* ============================================================
   PROSE
   ============================================================ */
.mf-prose{font-size:1.04rem;color:#27313f;}
.mf-prose h2{margin-top:2em;}
.mf-prose h3{margin-top:1.5em;}
.mf-prose ul,.mf-prose ol{margin:0 0 1.15rem;padding-left:1.3em;}
.mf-prose li{margin-bottom:.4em;}
.mf-prose table{width:100%;border-collapse:collapse;margin:1.2rem 0;font-size:.95rem;}
.mf-prose th,.mf-prose td{text-align:left;padding:11px 13px;border-bottom:1px solid var(--mf-line);}
.mf-prose th{font-family:var(--mf-font-display);font-size:.82rem;text-transform:uppercase;letter-spacing:.05em;color:var(--mf-muted);background:var(--mf-bg-tint);}
.mf-prose tr:last-child td{border-bottom:0;}

/* ============================================================
   SOURCE / VERIFICATION BOX
   ============================================================ */
.mf-source{display:flex;gap:14px;align-items:flex-start;background:var(--mf-surface);border:1px solid var(--mf-line);border-left:4px solid var(--mf-blue-500);border-radius:var(--mf-radius);padding:16px 18px;margin:24px 0;box-shadow:var(--mf-shadow-sm);}
.mf-source__ico{flex:0 0 auto;width:34px;height:34px;border-radius:8px;background:var(--mf-blue-050);color:var(--mf-blue-500);display:grid;place-items:center;font-size:1.05rem;}
.mf-source h4{font-family:var(--mf-font-display);margin:0 0 4px;font-size:1rem;color:var(--mf-navy-800);}
.mf-source p{margin:0;font-size:.9rem;color:var(--mf-muted);}
.mf-source__meta{font-size:.82rem;color:var(--mf-faint);margin-top:6px !important;}
.mf-source a{font-weight:600;}

/* ============================================================
   INTERLINK BLOCKS
   ============================================================ */
.mf-related{margin:34px 0;}
.mf-related h2{font-size:1.16rem;display:flex;align-items:center;gap:9px;}
.mf-related h2 .mf-dot{width:9px;height:9px;border-radius:50%;background:var(--mf-gold);}
.mf-linkgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(238px,1fr));gap:12px;margin-top:4px;}
.mf-linkcard{background:var(--mf-surface);border:1px solid var(--mf-line);border-radius:var(--mf-radius-sm);padding:14px 15px;display:flex;flex-direction:column;gap:3px;transition:border-color .14s ease, transform .14s ease, box-shadow .14s ease;}
.mf-linkcard:hover{border-color:var(--mf-blue-400);transform:translateY(-2px);box-shadow:var(--mf-shadow-sm);text-decoration:none;}
.mf-linkcard__name{font-family:var(--mf-font-display);font-weight:600;color:var(--mf-navy-800);font-size:1rem;}
.mf-linkcard__sub{font-size:.82rem;color:var(--mf-muted);}
.mf-related--brand .mf-linkcard{border-left:3px solid var(--mf-gold);}

/* ============================================================
   EMBED FORM SLOT
   ============================================================ */
.mf-formslot{background:linear-gradient(160deg,var(--mf-navy-800),var(--mf-navy-900));color:#fff;border-radius:var(--mf-radius-lg);padding:30px 28px;margin:36px 0;box-shadow:var(--mf-shadow);}
.mf-formslot .mf-eyebrow{color:var(--mf-gold);}
.mf-formslot h3{color:#fff;font-size:1.4rem;margin:8px 0 6px;}
.mf-formslot p{color:#c2cfe4;max-width:52ch;}
.mf-formslot__inner{margin-top:18px;}
.mf-formslot__placeholder{border:1.5px dashed rgba(255,255,255,.28);border-radius:var(--mf-radius);padding:26px;text-align:center;color:#9fb0c9;font-size:.92rem;}
.mf-formslot__placeholder code{background:rgba(255,255,255,.1);padding:2px 7px;border-radius:5px;color:#fff;}

/* ============================================================
   SIDEBAR
   ============================================================ */
.mf-aside{position:sticky;top:84px;display:flex;flex-direction:column;gap:18px;}
.mf-card{background:var(--mf-surface);border:1px solid var(--mf-line);border-radius:var(--mf-radius);padding:18px 18px 20px;box-shadow:var(--mf-shadow-sm);}
.mf-card h3{font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;color:var(--mf-muted);margin-bottom:12px;}
.mf-sidelist{list-style:none;margin:0;padding:0;}
.mf-sidelist li{border-bottom:1px solid var(--mf-line-soft);}
.mf-sidelist li:last-child{border-bottom:0;}
.mf-sidelist a{display:block;padding:9px 0;font-size:.93rem;color:var(--mf-navy-700);font-weight:500;}
.mf-sidelist a:hover{color:var(--mf-blue-500);text-decoration:none;}
.mf-sidelist a.is-current{color:var(--mf-gold-dark);font-weight:700;}
.mf-sidelist a.is-current::before{content:"\2192 ";color:var(--mf-gold-dark);}
@media(max-width:980px){.mf-aside{position:static;}}

/* ============================================================
   FOOTER
   ============================================================ */
.mf-footer{background:var(--mf-navy-900);color:#9fb0c9;padding:48px 0 34px;margin-top:30px;}
.mf-footer a{color:#cdd8ea;}
.mf-footer a:hover{color:#fff;}
.mf-footcols{display:grid;grid-template-columns:1.6fr repeat(auto-fit,minmax(132px,1fr));gap:28px;}
@media(max-width:760px){.mf-footcols{grid-template-columns:1fr 1fr;}}
.mf-footer h4{color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.09em;margin-bottom:12px;}
.mf-footer ul{list-style:none;margin:0;padding:0;}
.mf-footer li{margin-bottom:7px;font-size:.92rem;}
.mf-footer__brand{font-family:var(--mf-font-display);font-weight:700;color:#fff;font-size:1.2rem;margin-bottom:8px;}
.mf-footer__brand b{color:var(--mf-gold);}
.mf-footer__legal{border-top:1px solid rgba(255,255,255,.1);margin-top:32px;padding-top:20px;font-size:.82rem;color:#7e8da3;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}
.mf-disclaimer{font-size:.8rem;color:#6f7e95;max-width:80ch;margin-top:10px;}

/* ============================================================
   ARCHIVE / LISTING
   ============================================================ */
.mf-listing{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:8px;}
.mf-providercard{background:var(--mf-surface);border:1px solid var(--mf-line);border-radius:var(--mf-radius);padding:20px;display:flex;flex-direction:column;gap:8px;transition:transform .14s ease,box-shadow .14s ease,border-color .14s;}
.mf-providercard:hover{transform:translateY(-3px);box-shadow:var(--mf-shadow);border-color:var(--mf-blue-400);text-decoration:none;}
.mf-providercard__name{font-family:var(--mf-font-display);font-weight:600;font-size:1.12rem;color:var(--mf-navy-800);}
.mf-providercard__rate{font-family:var(--mf-font-display);font-weight:700;color:var(--mf-gold-dark);font-size:.96rem;}
.mf-providercard__rate small{color:var(--mf-faint);font-weight:500;}
.mf-providercard__go{margin-top:auto;font-size:.85rem;font-weight:600;color:var(--mf-blue-500);}
.mf-sectionhead{margin:34px 0 14px;}
.mf-sectionhead h2{margin:0;}

/* utility */
.mf-mt0{margin-top:0;}
.mf-center{text-align:center;}