/* ============================================================
   Belmadeng — design system
   Visual direction: JAMB Success homepage reference (Phase 1)
   Deep navy + Nigerian green, soft tinted cards, generous air.
   ============================================================ */

:root{
  --navy:#0E2A47;
  --navy-2:#123A58;
  --ink:#1B2B3A;
  --muted:#5A6B7B;
  --green:#14934A;
  --green-dark:#0C6B35;
  --green-wash:#E9F6EE;
  --bg:#FFFFFF;
  --bg-soft:#F5F9F6;
  --line:#E3E9E5;
  --tint-blue-bg:#EEF4FF;   --tint-blue:#2E5AAC;
  --tint-purple-bg:#F4EFFF; --tint-purple:#7A4FD0;
  --tint-orange-bg:#FFF4E8; --tint-orange:#C76F14;
  --tint-teal-bg:#E8F7F4;   --tint-teal:#0F8A78;
  --tint-rose-bg:#FDEEF0;   --tint-rose:#C2404F;
  --radius:14px;
  --radius-sm:9px;
  --shadow:0 1px 2px rgba(14,42,71,.06), 0 8px 24px rgba(14,42,71,.07);
  --font:'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  --maxw:1140px;
}

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

body{
  margin:0; font-family:var(--font); color:var(--ink); background:var(--bg);
  font-size:16px; line-height:1.6; -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%; display:block}
a{color:var(--green-dark)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:3px solid #7CC79B; outline-offset:2px; border-radius:4px;
}
.container{max-width:var(--maxw); margin:0 auto; padding:0 20px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

h1,h2,h3,h4{line-height:1.2; margin:0 0 .5em; font-weight:800; letter-spacing:-.015em}
h1{font-size:clamp(1.9rem,4.5vw,2.9rem)}
h2{font-size:clamp(1.4rem,3vw,1.9rem)}
h3{font-size:1.12rem}
p{margin:.4em 0 1em}
.lede{color:var(--muted); max-width:62ch}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:.5em; cursor:pointer;
  font:600 .95rem/1 var(--font); text-decoration:none; border:0;
  padding:.78em 1.25em; border-radius:10px; transition:background .15s ease;
}
.btn-primary{background:var(--green); color:#fff}
.btn-primary:hover{background:var(--green-dark)}
.btn-navy{background:var(--navy); color:#fff}
.btn-navy:hover{background:#0A2138}
.btn-ghost{background:transparent; color:var(--navy); border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--navy)}
.btn-block{width:100%; justify-content:center}

/* honest development flag, required by Phase 1 rules */
.dev-flag{
  display:inline-block; font-size:.72rem; font-weight:700; letter-spacing:.02em;
  color:var(--tint-orange); background:var(--tint-orange-bg);
  border:1px solid #F0DCC2; border-radius:999px; padding:.2em .7em; vertical-align:middle;
}

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:50; background:var(--bg);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex; align-items:center; gap:18px; min-height:64px}
.brand{display:flex; align-items:center; gap:10px; text-decoration:none; color:var(--navy)}
.brand-mark{width:34px;height:34px;flex:none}
.brand-name{font-weight:800; font-size:1.15rem; letter-spacing:-.01em}
.brand-tag{display:block; font-size:.62rem; font-weight:600; color:var(--green-dark); letter-spacing:.03em}
.main-nav{margin-left:auto}
.main-nav ul{display:flex; gap:2px; list-style:none; margin:0; padding:0}
.main-nav a{
  display:block; padding:.55em .8em; border-radius:8px; text-decoration:none;
  color:var(--ink); font-weight:600; font-size:.92rem;
}
.main-nav a:hover{background:var(--bg-soft)}
.main-nav a[aria-current="page"]{color:var(--green-dark); background:var(--green-wash)}
.header-cta{flex:none}
.nav-toggle{
  display:none; margin-left:auto; background:none; border:1.5px solid var(--line);
  border-radius:8px; padding:.5em .7em; font:700 .9rem var(--font); color:var(--navy); cursor:pointer;
}
@media (max-width:920px){
  .nav-toggle{display:block}
  .main-nav{display:none; position:absolute; left:0; right:0; top:100%;
    background:var(--bg); border-bottom:1px solid var(--line); box-shadow:var(--shadow)}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column; padding:10px 14px 16px}
  .header-cta{display:none}
}

/* ---------- hero ---------- */
.hero{background:linear-gradient(180deg,var(--green-wash) 0%, #F4FBF6 70%, var(--bg) 100%); padding:44px 0 40px}
.hero-grid{display:grid; grid-template-columns:1.5fr 1fr; gap:36px; align-items:start}
.hero h1{color:var(--navy)}
.hero h1 .line-green{color:var(--green-dark)}
.hero-search{display:flex; gap:8px; margin:18px 0 10px; max-width:560px}
.hero-search input{
  flex:1; min-width:0; padding:.85em 1em; font:500 .95rem var(--font);
  border:1.5px solid var(--line); border-radius:10px; background:var(--bg);
}
.chips{display:flex; flex-wrap:wrap; gap:8px; margin-top:10px}
.chip{
  font-size:.8rem; font-weight:600; color:var(--navy); text-decoration:none;
  background:var(--bg); border:1px solid var(--line); border-radius:999px; padding:.5em 1em;
  display:inline-flex; align-items:center; min-height:36px;
}
.chip:hover{border-color:var(--green)}
.quick-panel{
  background:var(--bg); border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow); padding:20px;
}
.quick-panel h2{font-size:1rem; color:var(--navy); display:flex; align-items:center; gap:10px; margin-bottom:6px}
.quick-panel .sub{font-size:.78rem; color:var(--muted); margin:0 0 12px}
.quick-panel ul{list-style:none; margin:0; padding:0}
.quick-panel li{border-top:1px solid var(--line)}
.quick-panel li:first-child{border-top:0}
.quick-panel a{
  display:flex; align-items:center; gap:10px; padding:.7em 2px; text-decoration:none;
  color:var(--ink); font-weight:600; font-size:.92rem;
}
.quick-panel a:hover{color:var(--green-dark)}
.tick{width:18px;height:18px;flex:none;color:var(--green)}
@media (max-width:840px){ .hero-grid{grid-template-columns:1fr} }

/* ---------- sections ---------- */
.section{padding:52px 0}
.section-alt{background:var(--bg-soft)}
.section-head{display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:26px}
.section-head .lede{margin:0}
.section-link{white-space:nowrap; font-weight:700; font-size:.9rem}

/* Start Here cards */
.card-grid{display:grid; gap:16px}
.grid-6{grid-template-columns:repeat(3,1fr)}
@media (max-width:840px){ .grid-6{grid-template-columns:repeat(2,1fr)} }
@media (max-width:520px){ .grid-6{grid-template-columns:1fr} }
.action-card{
  border:1px solid var(--line); border-radius:var(--radius); padding:22px 20px;
  text-decoration:none; color:var(--ink); background:var(--bg); display:block;
}
.action-card:hover{box-shadow:var(--shadow)}
.action-card .icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:14px;
}
.action-card h3{margin-bottom:.3em}
.action-card p{font-size:.88rem; color:var(--muted); margin:0 0 .9em}
.action-card .go{font-weight:700; font-size:.86rem; color:var(--green-dark)}
.action-card.feature{background:var(--navy); color:#fff; border-color:var(--navy)}
.action-card.feature p{color:#B9CBDD}
.action-card.feature .go{color:#7CDCA1}
.t-blue .icon{background:var(--tint-blue-bg); color:var(--tint-blue)}
.t-green .icon{background:var(--green-wash); color:var(--green-dark)}
.t-purple .icon{background:var(--tint-purple-bg); color:var(--tint-purple)}
.t-orange .icon{background:var(--tint-orange-bg); color:var(--tint-orange)}
.t-teal .icon{background:var(--tint-teal-bg); color:var(--tint-teal)}
.t-rose .icon{background:var(--tint-rose-bg); color:var(--tint-rose)}
.feature .icon{background:rgba(255,255,255,.12); color:#7CDCA1}

/* Study Centre subjects */
.subject-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
@media (max-width:920px){ .subject-grid{grid-template-columns:repeat(3,1fr)} }
@media (max-width:640px){ .subject-grid{grid-template-columns:repeat(2,1fr)} }
.subject-card{
  border:1px solid var(--line); border-radius:var(--radius); background:var(--bg);
  padding:18px 16px; text-align:center; text-decoration:none; color:var(--ink);
}
.subject-card:hover{box-shadow:var(--shadow)}
.subject-card .icon{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;margin:0 auto 10px}
.subject-card h3{font-size:.95rem; margin-bottom:.2em}
.subject-card span{font-size:.78rem; color:var(--green-dark); font-weight:700}

/* CBT preview */
.cbt-grid{display:grid; grid-template-columns:1fr 1.15fr; gap:30px; align-items:center}
@media (max-width:900px){ .cbt-grid{grid-template-columns:1fr} }
.cbt-modes{display:grid; grid-template-columns:1fr 1fr; gap:14px}
@media (max-width:520px){ .cbt-modes{grid-template-columns:1fr} }
.cbt-shot{
  background:var(--navy); border-radius:var(--radius); padding:22px; color:#fff; box-shadow:var(--shadow);
}
.cbt-shot .bar{display:flex; justify-content:space-between; align-items:center; font-size:.8rem; color:#B9CBDD; margin-bottom:14px}
.cbt-shot .q{background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.12); border-radius:10px; padding:16px}
.cbt-shot .q p{font-weight:600; margin:0 0 12px}
.cbt-shot .opt{display:flex; align-items:center; gap:10px; padding:.45em .6em; border-radius:8px; font-size:.9rem; color:#DCE7F2}
.cbt-shot .opt::before{content:""; width:14px;height:14px;border:2px solid #6E88A5;border-radius:50%}
.cbt-shot .opt.sel{background:rgba(124,220,161,.14); color:#fff}
.cbt-shot .opt.sel::before{border-color:#7CDCA1; background:#7CDCA1}
.cbt-shot .note{font-size:.72rem; color:#8FA7BE; margin:12px 0 0}

/* two-column info sections */
.split{display:grid; grid-template-columns:1fr 1fr; gap:26px}
@media (max-width:840px){ .split{grid-template-columns:1fr} }
.panel{border:1px solid var(--line); border-radius:var(--radius); background:var(--bg); padding:24px}
.panel h2{font-size:1.15rem}
.list-plain{list-style:none; margin:0; padding:0}
.list-plain li{border-top:1px solid var(--line)}
.list-plain li:first-child{border-top:0}
.list-plain a{display:flex; justify-content:space-between; align-items:center; gap:12px; padding:.75em 2px; text-decoration:none; color:var(--ink); font-weight:600; font-size:.93rem}
.list-plain a:hover{color:var(--green-dark)}
.list-plain .meta{font-size:.78rem; font-weight:500; color:var(--muted)}

/* articles */
.article-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
@media (max-width:900px){ .article-grid{grid-template-columns:repeat(2,1fr)} }
@media (max-width:560px){ .article-grid{grid-template-columns:1fr} }
.article-card{border:1px solid var(--line); border-radius:var(--radius); background:var(--bg); padding:20px; text-decoration:none; color:var(--ink); display:block}
.article-card:hover{box-shadow:var(--shadow)}
.article-card .cat{font-size:.72rem; font-weight:700; color:var(--green-dark)}
.article-card h3{font-size:1rem; margin:.4em 0 .4em}
.article-card p{font-size:.86rem; color:var(--muted); margin:0}

/* help strip */
.help-strip{background:var(--navy); border-radius:var(--radius); color:#fff; padding:30px 26px; display:flex; flex-wrap:wrap; align-items:center; gap:22px}
.help-strip h2{margin:0 0 .2em}
.help-strip p{color:#B9CBDD; margin:0}
.help-strip .grow{flex:1 1 340px}
.help-topics{display:flex; flex-wrap:wrap; gap:8px; margin-top:12px}
.help-topics a{font-size:.8rem; font-weight:600; color:#DCE7F2; text-decoration:none; border:1px solid rgba(255,255,255,.25); border-radius:999px; padding:.5em 1em; display:inline-flex; align-items:center; min-height:36px}
.help-topics a:hover{border-color:#7CDCA1; color:#7CDCA1}

/* trust / verification badges */
.verify-note{
  font-size:.8rem; color:var(--muted); background:var(--bg-soft);
  border:1px solid var(--line); border-radius:var(--radius-sm); padding:.7em 1em; margin-top:14px;
}
.verify-note strong{color:var(--ink)}

/* ---------- footer ---------- */
.site-footer{background:var(--navy); color:#C6D4E2; margin-top:60px; font-size:.9rem}
.footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:28px; padding:44px 0 30px}
@media (max-width:840px){ .footer-grid{grid-template-columns:1fr 1fr} }
@media (max-width:520px){ .footer-grid{grid-template-columns:1fr} }
.site-footer h3{color:#fff; font-size:.95rem; margin-bottom:.7em}
.site-footer ul{list-style:none; margin:0; padding:0}
.site-footer li{margin:.45em 0}
.site-footer a{color:#C6D4E2; text-decoration:none}
.site-footer a:hover{color:#7CDCA1}
.footer-brand p{max-width:34ch; font-size:.86rem}
.footer-legal{border-top:1px solid rgba(255,255,255,.14); padding:16px 0 22px; display:flex; flex-wrap:wrap; gap:14px; justify-content:space-between; font-size:.8rem; color:#8FA7BE}
.footer-legal a{color:#8FA7BE}

/* ---------- page (interior) ---------- */
.page-head{background:var(--green-wash); padding:36px 0 30px; border-bottom:1px solid var(--line)}
.page-head h1{color:var(--navy); margin-bottom:.2em}
.breadcrumbs{font-size:.8rem; color:var(--muted); margin-bottom:10px}
.breadcrumbs a{color:var(--muted)}
.page-body{padding:36px 0 20px}
.prose{max-width:74ch}
.prose h2{margin-top:1.6em}
.prose li{margin:.35em 0}
.callout{border-left:4px solid var(--green); background:var(--bg-soft); border-radius:0 var(--radius-sm) var(--radius-sm) 0; padding:14px 18px; margin:20px 0}
.callout.warn{border-left-color:var(--tint-orange)}

/* forms / tools */
.tool-form{display:grid; gap:14px; max-width:520px}
.tool-form label{font-weight:700; font-size:.88rem}
.tool-form input,.tool-form select{
  width:100%; padding:.75em .9em; font:500 .95rem var(--font);
  border:1.5px solid var(--line); border-radius:10px; background:var(--bg); color:var(--ink);
}
.result-box{margin-top:20px; border:1px solid var(--line); border-radius:var(--radius); padding:20px; background:var(--bg-soft)}
.result-box .big{font-size:2rem; font-weight:800; color:var(--navy)}

/* ---------- CBT engine ---------- */
.cbt-app{max-width:860px; margin:0 auto}
.cbt-top{display:flex; flex-wrap:wrap; gap:10px; align-items:center; justify-content:space-between; background:var(--navy); color:#fff; border-radius:var(--radius) var(--radius) 0 0; padding:14px 18px}
.cbt-top .timer{font-weight:800; font-variant-numeric:tabular-nums; background:rgba(255,255,255,.12); border-radius:8px; padding:.3em .8em}
.cbt-main{border:1px solid var(--line); border-top:0; border-radius:0 0 var(--radius) var(--radius); padding:22px; background:var(--bg)}
.cbt-q{font-weight:700; font-size:1.05rem; margin-bottom:14px}
.cbt-opts{display:grid; gap:10px; margin-bottom:18px}
.cbt-opt{display:flex; gap:12px; align-items:flex-start; border:1.5px solid var(--line); border-radius:10px; padding:.8em 1em; cursor:pointer; font-size:.95rem; background:var(--bg)}
.cbt-opt:hover{border-color:var(--green)}
.cbt-opt input{margin-top:.2em}
.cbt-opt.picked{border-color:var(--green); background:var(--green-wash)}
.cbt-nav{display:flex; flex-wrap:wrap; gap:10px; justify-content:space-between; align-items:center}
.palette{display:flex; flex-wrap:wrap; gap:6px; margin-top:18px}
.palette button{
  width:34px;height:34px;border-radius:8px;border:1.5px solid var(--line);
  background:var(--bg); font:700 .8rem var(--font); color:var(--ink); cursor:pointer;
}
.palette button.answered{background:var(--green-wash); border-color:var(--green); color:var(--green-dark)}
.palette button.flagged{background:var(--tint-orange-bg); border-color:var(--tint-orange); color:var(--tint-orange)}
.palette button.current{outline:3px solid var(--navy)}
.score-band{font-weight:800; font-size:1.6rem; color:var(--navy)}
.explain{border-top:1px dashed var(--line); margin-top:12px; padding-top:12px; font-size:.9rem}
.explain .ok{color:var(--green-dark); font-weight:700}
.explain .no{color:var(--tint-rose); font-weight:700}

/* ============================================================
   Design system — Phase 5 additions (components)
   Extends the Build-1 tokens above; nothing overridden.
   ============================================================ */

/* alerts */
.alert{border:1px solid var(--line); border-left-width:4px; border-radius:var(--radius-sm); padding:14px 16px; margin:16px 0; font-size:.92rem; background:var(--bg)}
.alert h4{margin:0 0 .3em; font-size:.95rem}
.alert .alert-title{margin:0 0 .3em; font-size:.95rem; font-weight:800}
.alert p:last-child{margin-bottom:0}
.alert-info{border-left-color:var(--tint-blue); background:var(--tint-blue-bg)}
.alert-success{border-left-color:var(--green); background:var(--green-wash)}
.alert-warn{border-left-color:var(--tint-orange); background:var(--tint-orange-bg)}
.alert-error{border-left-color:var(--tint-rose); background:var(--tint-rose-bg)}

/* badges */
.badge{display:inline-block; font-size:.72rem; font-weight:700; letter-spacing:.01em; border-radius:999px; padding:.22em .7em; vertical-align:middle}
.badge-verified{background:var(--green-wash); color:var(--green-dark)}
.badge-official{background:var(--tint-blue-bg); color:var(--tint-blue)}
.badge-updating{background:var(--tint-orange-bg); color:var(--tint-orange)}
.badge-new{background:var(--tint-purple-bg); color:var(--tint-purple)}

/* tabs (no JS default: anchor tabs) */
.tabs{display:flex; flex-wrap:wrap; gap:4px; border-bottom:1px solid var(--line); margin:0 0 20px}
.tabs a{padding:.6em 1em; text-decoration:none; color:var(--muted); font-weight:600; font-size:.92rem; border-bottom:2px solid transparent; margin-bottom:-1px}
.tabs a:hover{color:var(--ink)}
.tabs a[aria-selected="true"]{color:var(--green-dark); border-bottom-color:var(--green)}

/* data tables */
.table-wrap{overflow-x:auto; border:1px solid var(--line); border-radius:var(--radius); margin:18px 0}
table.data{width:100%; border-collapse:collapse; font-size:.9rem; min-width:420px}
table.data th,table.data td{text-align:left; padding:.7em .9em; border-bottom:1px solid var(--line)}
table.data th{background:var(--bg-soft); font-weight:700; color:var(--navy)}
table.data tr:last-child td{border-bottom:0}
table.data tbody tr:hover{background:var(--bg-soft)}

/* pagination */
.pagination{display:flex; flex-wrap:wrap; gap:6px; justify-content:center; margin:26px 0}
.pagination a,.pagination span{min-width:38px; text-align:center; padding:.5em .7em; border:1px solid var(--line); border-radius:8px; text-decoration:none; color:var(--ink); font-weight:600; font-size:.9rem}
.pagination a:hover{border-color:var(--green)}
.pagination .current{background:var(--green); color:#fff; border-color:var(--green)}
.pagination .disabled{color:var(--muted); pointer-events:none; opacity:.5}

/* states: empty / loading / error / success */
.state{text-align:center; padding:40px 20px; color:var(--muted)}
.state .state-icon{width:48px; height:48px; margin:0 auto 12px; color:var(--line)}
.state h3{color:var(--ink); margin-bottom:.3em}
.skeleton{background:linear-gradient(90deg,var(--bg-soft) 25%,#EEF3EF 37%,var(--bg-soft) 63%); background-size:400% 100%; animation:sk 1.2s ease-in-out infinite; border-radius:8px; height:16px; margin:.5em 0}
@keyframes sk{0%{background-position:100% 0}100%{background-position:-100% 0}}
@media (prefers-reduced-motion:reduce){ .skeleton{animation:none} }

/* modal (dialog element, progressive) */
dialog.modal{border:0; border-radius:var(--radius); box-shadow:0 20px 60px rgba(14,42,71,.25); padding:0; max-width:440px; width:calc(100% - 32px)}
dialog.modal::backdrop{background:rgba(14,42,71,.45)}
dialog.modal .modal-body{padding:24px}
dialog.modal .modal-actions{display:flex; gap:10px; justify-content:flex-end; padding:0 24px 20px}

/* tooltip (CSS-only, keyboard-focusable) */
.tip{position:relative; border-bottom:1px dotted var(--muted); cursor:help}
.tip:hover .tip-text,.tip:focus-within .tip-text{opacity:1; visibility:visible}
.tip-text{position:absolute; bottom:135%; left:50%; transform:translateX(-50%); background:var(--navy); color:#fff; font-size:.78rem; font-weight:500; padding:.5em .7em; border-radius:8px; white-space:normal; width:max-content; max-width:240px; opacity:0; visibility:hidden; transition:opacity .12s; z-index:20}

/* filters bar */
.filter-bar{display:flex; flex-wrap:wrap; gap:8px; align-items:center; margin:0 0 18px}
.filter-bar select{padding:.5em .8em; border:1.5px solid var(--line); border-radius:8px; font:600 .88rem var(--font); background:var(--bg)}

/* CBT palette — aligned to real JAMB colour code:
   GREEN = answered, GREY = unanswered, BLUE = current question.
   (Orange kept only for the optional review-flag, which JAMB lacks.) */
.palette button.answered{background:var(--green-wash); border-color:var(--green); color:var(--green-dark)}
.palette button.current{outline:none; background:var(--tint-blue-bg); border-color:var(--tint-blue); color:var(--tint-blue); box-shadow:0 0 0 2px var(--tint-blue)}
.palette button.flagged{background:var(--tint-orange-bg); border-color:var(--tint-orange); color:var(--tint-orange)}
.cbt-legend{display:flex; flex-wrap:wrap; gap:14px; margin-top:14px; font-size:.78rem; color:var(--muted)}
.cbt-legend span{display:inline-flex; align-items:center; gap:6px}
.cbt-legend i{width:14px; height:14px; border-radius:4px; display:inline-block; border:1.5px solid}
.cbt-legend .k-ans{background:var(--green-wash); border-color:var(--green)}
.cbt-legend .k-cur{background:var(--tint-blue-bg); border-color:var(--tint-blue)}
.cbt-legend .k-un{background:var(--bg); border-color:var(--line)}
.cbt-legend .k-fl{background:var(--tint-orange-bg); border-color:var(--tint-orange)}