/*! Local GOV.UK-inspired CSS + responsive header + exam/practice shells */
:root{--black:#0b0c0c;--blue:#1d70b8;--yellow:#ffdd00;--green:#00703c;--red:#d4351c;--g1:#b1b4b6;--g2:#f3f2f1;}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:"GDS Transport","Helvetica Neue",Arial,Helvetica,sans-serif;color:var(--black);background:#fff;line-height:1.5}
.govuk-width-container{max-width:1100px;margin:0 auto;padding:0 16px}

a{color:var(--blue)}
a:focus{outline:3px solid var(--yellow);box-shadow:0 -2px var(--yellow),0 4px var(--black)}
.govuk-heading-xl{font-size:2.2rem;line-height:1.1;margin:0 0 12px}
.govuk-heading-l{font-size:1.8rem;margin:18px 0 12px}
.govuk-heading-m{font-size:1.3rem;margin:12px 0 8px}
.govuk-heading-s{font-size:1.1rem;margin:10px 0 6px}
.govuk-body{margin:0 0 10px}
.govuk-body-l{font-size:1.125rem;margin:0 0 12px}
.govuk-body-s{font-size:.9rem;color:#505a5f}
.govuk-hint{color:#505a5f}
.govuk-button{display:inline-block;padding:12px 18px;background:var(--blue);color:#fff;border:0;border-radius:8px;text-decoration:none;cursor:pointer;font-weight:700}
.govuk-button:hover{filter:brightness(.96)}
.govuk-button--secondary{background:#505a5f}
.govuk-button--warning{background:var(--red)}
.govuk-button-group>*{margin-right:10px;margin-bottom:10px}
.govuk-inset-text{border-left:10px solid var(--g1);background:#fafafa;padding:12px 15px;margin:10px 0}
.govuk-panel{padding:18px;border:2px solid var(--g1);background:#fff;border-radius:10px}
.govuk-panel--confirmation{border-color:var(--green);box-shadow:inset 0 0 0 2px var(--green)}
.govuk-panel--warning{border-color:var(--red);box-shadow:inset 0 0 0 2px var(--red)}
.govuk-notification-banner{border-left:8px solid var(--blue);background:#eef5ff;padding:12px 15px;border-radius:8px}
.govuk-notification-banner--success{border-left-color:var(--green);background:#e8f3ed}
.govuk-notification-banner--important{border-left-color:var(--red);background:#fdecea}
.govuk-breadcrumbs__list{list-style:none;padding:0;margin:0 0 10px;display:flex;flex-wrap:wrap;gap:6px}
.govuk-table{width:100%;border-collapse:collapse;margin:10px 0}
.govuk-table__header,.govuk-table__cell{border-bottom:1px solid var(--g1);padding:8px}

.govuk-grid-row{display:flex;flex-wrap:wrap;margin:0 -10px}
.govuk-grid-column-one-third,.govuk-grid-column-two-thirds{padding:0 10px}
.govuk-grid-column-one-third{flex:0 0 33.333%}
.govuk-grid-column-two-thirds{flex:0 0 66.666%}
@media(max-width: 860px){.govuk-grid-column-one-third,.govuk-grid-column-two-thirds{flex:0 0 100%}}

.govuk-form-group{margin-bottom:15px}
.govuk-fieldset{border:0;margin:0;padding:0}
.govuk-fieldset__legend--l .govuk-fieldset__heading{font-size:1.5rem}
.govuk-label{display:block;margin:0 0 6px}
.govuk-radios__item{display:flex;align-items:center;margin-bottom:10px;padding:10px;border:1px solid var(--g1);border-radius:10px}
.govuk-radios__input{margin-right:10px;width:20px;height:20px}
.govuk-error-message{color:var(--red);font-weight:700;margin-bottom:10px}
.govuk-details{border:1px solid var(--g1);padding:10px 12px;border-radius:8px}
.govuk-accordion{border-top:1px solid var(--g1)}
.govuk-accordion__section{border-bottom:1px solid var(--g1)}
.govuk-accordion__section-button{display:block;padding:12px 0;font-weight:700;text-decoration:underline;cursor:pointer}
.govuk-footer{background:#f3f2f1;margin-top:30px;padding:15px 0}
.govuk-footer__inline-list{list-style:none;display:flex;gap:12px;padding:0;margin:10px 0}
.govuk-visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);border:0}

/* Hide skip link by default, show on keyboard focus */
.govuk-skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.govuk-skip-link:focus{left:8px;top:8px;width:auto;height:auto;background:#000;color:#fff;padding:8px 12px;border-radius:6px;z-index:1000}

/* header */
.luk-header{background:var(--black);color:#fff;padding:0;border-bottom:5px solid var(--blue)}
.luk-header__inner{display:flex;align-items:center;justify-content:space-between;min-height:60px}
.luk-brand{display:flex;align-items:center;gap:12px}
.luk-logo{display:block}
.luk-service-name{color:#fff!important;font-weight:700;font-size:22px;text-decoration:none}
.luk-nav{position:relative}
.luk-nav__list{list-style:none;margin:0;padding:0;display:flex;gap:16px}
.luk-nav__link{color:#d0e3f0!important;text-decoration:none}
.menu-toggle{display:none;background:none;border:0;color:#fff;font-size:26px;line-height:1;padding:8px;border-radius:6px}
@media(max-width: 720px){
  .luk-nav__list{display:none; position:absolute; right:0; top:48px; background:#111; border:1px solid #333; border-radius:8px; padding:8px; width: 220px; flex-direction:column; gap:10px}
  .menu-toggle{display:block}
  .luk-nav__list.is-open{display:flex}
}

/* shells (no scrolling) */
.shell{min-height:calc(100vh - 180px); display:flex; align-items:center; justify-content:center; overflow:hidden}
.card{width:100%; max-width:760px}
.viewport{max-height:520px; overflow:hidden}
.meta{display:flex; align-items:center; justify-content:space-between; gap:12px}
.flag-list{display:flex; flex-wrap:wrap; gap:6px}
.flag-pill{padding:2px 8px; border:1px solid var(--g1); border-radius:999px; text-decoration:none}

/* tiles */
.tile{display:block;border:1px solid var(--g1);border-radius:12px;padding:16px;text-decoration:none;color:inherit;background:#fff}
.tile h3{margin:0 0 8px;font-size:1.1rem}
.tile .meta{color:#505a5f;font-size:.9rem}

/* forms */
.form-row{display:flex; gap:12px; flex-wrap:wrap}
input[type="text"],input[type="email"],input[type="password"]{padding:10px;border:1px solid var(--g1);border-radius:8px;width:100%;max-width:360px}

/* Auth cards */
.auth-wrap{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 200px)}
.auth-card{width:100%;max-width:520px;border:1px solid var(--g1);border-radius:14px;box-shadow:0 6px 18px rgba(0,0,0,.06);padding:22px;background:#fff}
.auth-title{margin:0 0 18px}
.auth-row{display:flex;gap:12px;flex-wrap:wrap}
.auth-row .field{flex:1 1 240px}
.input{padding:12px 14px;border:1px solid var(--g1);border-radius:10px;width:100%;font-size:16px}
.input:focus{outline:3px solid var(--yellow);box-shadow:0 0 0 2px #000 inset}
.btn-block{display:block;width:100%}
.btn-ghost{background:transparent;border:1px solid var(--g1);color:#000}
.hr-or{display:flex;align-items:center;gap:10px;margin:12px 0}
.hr-or::before,.hr-or::after{content:'';flex:1;height:1px;background:var(--g1)}
/* Right-aligned hamburger on mobile */
.header-actions{display:flex;align-items:center;gap:10px}
@media(max-width:720px){
  .luk-header__inner{gap:10px}
  .header-actions{margin-left:auto}
  .luk-brand{gap:8px}
}

/* ---------- Modern enhancements ---------- */
:root{
  --bg:#ffffff; --text:#0b0c0c; --muted:#6b7280; --border:#e5e7eb;
  --primary:#1d70b8; --primary-600:#155fa0; --danger:#d4351c; --shadow:0 10px 24px rgba(0,0,0,.08);
}
body{background:var(--bg);color:var(--text)}
/* Containers & cards */
.container{max-width:1100px;margin:0 auto;padding:0 16px}
.card-md{border:1px solid var(--border);border-radius:14px;background:#fff;box-shadow:var(--shadow);padding:20px}
/* Inputs */
.input{display:block;width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-size:16px;transition:border .15s}
.input:focus{outline:none;border-color:var(--primary)}
label.govuk-label{font-weight:600;color:#111}
/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 16px;border-radius:10px;border:0;background:var(--primary);color:#fff;font-weight:700;cursor:pointer}
.btn:hover{background:var(--primary-600)}
.btn-secondary{background:#6b7280}
.btn-ghost{background:transparent;border:1px solid var(--border);color:#111}
.btn-block{width:100%}
/* Auth layout */
.auth-wrap{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 200px);padding:16px}
.auth-card{width:100%;max-width:520px}
.auth-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.auth-row .field{flex:1 1 240px}
/* Practice & Mock spacing on mobile */
.govuk-radios__item{margin-bottom:12px}
.viewport{padding:8px}
/* Header: right hamburger on mobile */
.header-actions{display:flex;align-items:center;gap:10px}
@media(max-width:720px){
  .luk-header__inner{gap:10px}
  .header-actions{margin-left:auto}
}

/* ===== v3.4 Design polish ===== */
:root{
  --bg:#ffffff;
  --surface:#ffffff;
  --text:#0b0c0c;
  --muted:#6b7280;
  --border:#e5e7eb;
  --primary:#1d70b8;
  --primary-600:#155fa0;
  --success:#00703c;
  --warning:#ff8a00;
  --danger:#d4351c;
  --shadow:0 10px 28px rgba(0,0,0,.06);
  --radius:14px;
}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-size:16px}
h1,h2,h3{font-weight:800;letter-spacing:-.01em}
h1.govuk-heading-xl, .govuk-heading-xl{font-size:2.25rem}
h1.govuk-heading-l, .govuk-heading-l{font-size:1.9rem}
h2.govuk-heading-m, .govuk-heading-m{font-size:1.35rem}
p{margin:0 0 12px}
small, .govuk-body-s{color:var(--muted)}

.container, .govuk-width-container{max-width:1160px}

/* Cards & surfaces */
.card, .card-md, .tile, .govuk-panel, .luk-card{
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--surface);
  box-shadow:var(--shadow);
}
.tile{transition:transform .15s, box-shadow .15s}
.tile:hover{transform:translateY(-1px); box-shadow:0 14px 32px rgba(0,0,0,.08)}

/* Buttons */
.govuk-button, .btn{
  border-radius:12px;
  padding:12px 16px;
  font-weight:800;
  transition:transform .05s ease-out, box-shadow .15s;
  box-shadow:0 1px 0 rgba(0,0,0,.1);
}
.govuk-button:hover, .btn:hover{transform:translateY(-1px)}
.govuk-button--secondary, .btn-ghost{background:#f5f6f7; color:#0b0c0c; border:1px solid var(--border)}

/* Badges */
.badge{display:inline-block;padding:4px 8px;border-radius:9999px;border:1px solid var(--border);font-size:.85rem}
.badge--success{background:#e9f6ef;border-color:#c7e9d6;color:#056a3b}
.badge--danger{background:#fdecec;border-color:#fad1d1;color:#a32020}

/* Progress bars */
.progress{height:10px;background:#f1f3f5;border-radius:999px;overflow:hidden;border:1px solid var(--border)}
.progress__bar{height:100%;background:linear-gradient(90deg,var(--primary),#23a6d5);width:0%}

/* Tables */
.govuk-table{border:1px solid var(--border); border-radius:12px; overflow:hidden}
.govuk-table__header{background:#fafafa}

/* Header tweaks */
.luk-header{box-shadow:0 1px 0 rgba(0,0,0,.1)}
.luk-service-name{font-size:24px}

/* Footer */
.govuk-footer{background:#f8f9fb;border-top:1px solid var(--border)}

/* Grid helpers */
.grid{display:grid; gap:16px}
.grid-2{grid-template-columns:2fr 1fr}
@media(max-width: 900px){ .grid-2{grid-template-columns:1fr} }

/* Practice spacing on mobile */
.viewport{padding:16px}
.govuk-radios__item{margin-bottom:14px}

/* Utility */
.m-0{margin:0} .mt-2{margin-top:8px} .mt-4{margin-top:16px}
.mt-6{margin-top:24px} .mb-2{margin-bottom:8px} .mb-4{margin-bottom:16px}
.flex{display:flex} .justify-between{justify-content:space-between} .items-center{align-items:center}
.stat{display:flex;flex-direction:column;gap:4px}
.stat .stat-num{font-size:1.6rem;font-weight:800}
.stat .stat-sub{color:var(--muted)}

.luk-nav__link.is-disabled{opacity:.45;pointer-events:none;cursor:not-allowed}


/* v3.7.2 — Mobile menu: full-width sheet, correct text colour */
@media(max-width:720px){
  .luk-header__inner{ position: relative; }
  .luk-nav__list{
    position: fixed !important;
    left: 0 !important;
    right: 0 !important;
    top: 56px !important;
    width: auto !important;
    max-width: none !important;
    margin: 0;
    padding: 12px 14px !important;
    background: #111 !important;
    color: #fff !important;
    border-radius: 0 0 12px 12px !important;
    box-shadow: 0 10px 20px rgba(0,0,0,.25);
    z-index: 10000;
  }
  .luk-nav__list a{
    color:#fff !important;
    display:block !important;
    padding:12px 8px !important;
  }
}