/* ==========================================================================
   MartinEdu — SEAG Practice Platform
   Design system: minimalist, low cognitive load, child-appropriate (age 10–11)
   ========================================================================== */

:root {
  /* Palette — calm, soft, high-contrast for readability */
  --bg:            #F5F8FC;
  --surface:       #FFFFFF;
  --surface-2:     #EEF3FA;
  --ink:           #2A2F3A;
  --ink-soft:      #5C6675;
  --ink-faint:     #8A93A3;
  --line:          #E3E9F2;

  --primary:       #3D6FF0;
  --primary-dark:  #2E58C8;
  --primary-soft:  #E7EEFF;

  /* Subject colours */
  --maths:         #3D6FF0;   /* blue  */
  --maths-soft:    #E7EEFF;
  --english:       #12A594;   /* teal  */
  --english-soft:  #DCF4F0;

  /* Confidence scale (5 steps) */
  --c1: #E79A9A;  /* no idea      */
  --c2: #EEC28C;  /* not so sure  */
  --c3: #CBD3DE;  /* neutral      */
  --c4: #A6D6B4;  /* quite sure   */
  --c5: #6FC58C;  /* very sure    */

  /* Diagnostic (calibration) colours */
  --secure:        #2FA36B;   /* confident + correct  */
  --secure-soft:   #E1F4EA;
  --misconception: #E0554E;   /* confident + wrong    */
  --misconc-soft:  #FBE4E2;
  --fragile:       #E0A020;   /* unsure + correct     */
  --fragile-soft:  #FBF0DA;
  --gap:           #5B79A8;   /* unsure + wrong       */
  --gap-soft:      #E7EDF6;

  --ok:   #2FA36B;
  --warn: #E0554E;

  --radius:   18px;
  --radius-s: 12px;
  --shadow:   0 6px 22px rgba(35, 55, 100, 0.08);
  --shadow-s: 0 2px 8px rgba(35, 55, 100, 0.06);

  --maxw: 820px;
  --font: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 24px 20px 80px; }
.wrap-wide { max-width: 1000px; }

h1, h2, h3 { line-height: 1.25; font-weight: 800; margin: 0 0 .4em; }
h1 { font-size: 2rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.1rem; }
p  { margin: 0 0 1em; }
a  { color: var(--primary); }

.muted { color: var(--ink-soft); }
.faint { color: var(--ink-faint); font-size: .9rem; }
.center { text-align: center; }

/* ---------- Top bar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1000px; margin: 0 auto; padding: 16px 20px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 900; font-size: 1.25rem; color: var(--ink); cursor: pointer; }
.brand .logo {
  width: 38px; height: 38px; border-radius: 11px;
  background: linear-gradient(135deg, var(--maths), var(--english));
  display: grid; place-items: center; color: #fff; font-weight: 900; font-size: 1.1rem;
}
.brand small { display:block; font-size:.62rem; font-weight:700; letter-spacing:.14em; color:var(--ink-faint); text-transform:uppercase; margin-top:-2px;}

/* ---------- Cards ---------- */
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow-s);
  padding: 26px;
}
.card + .card { margin-top: 18px; }

/* ---------- Buttons ---------- */
.btn {
  font-family: inherit; font-weight: 800; font-size: 1rem;
  padding: 14px 26px; border-radius: 999px; border: none; cursor: pointer;
  background: var(--primary); color: #fff; transition: transform .08s ease, box-shadow .15s ease, background .15s;
  box-shadow: 0 4px 14px rgba(61,111,240,.28);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform:none; box-shadow:none; }
.btn.ghost { background: var(--surface); color: var(--primary); border: 2px solid var(--primary); box-shadow:none; }
.btn.soft  { background: var(--surface-2); color: var(--ink); box-shadow:none; }
.btn.lg { padding: 16px 34px; font-size: 1.1rem; }
.btn.block { display:block; width:100%; }

/* ---------- Home: subject picker ---------- */
.hero { text-align: center; padding: 20px 0 8px; }
.hero h1 { font-size: 2.3rem; margin-bottom: .2em; }
.hero p  { color: var(--ink-soft); max-width: 560px; margin: 0 auto 1.2em; }

.pick-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 10px; }
@media (max-width: 620px){ .pick-grid { grid-template-columns: 1fr; } }

.subject-card {
  border-radius: var(--radius); padding: 30px 26px; cursor: pointer; color: #fff;
  border: none; text-align: left; font-family: inherit; transition: transform .1s ease, box-shadow .2s;
  box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.subject-card:hover { transform: translateY(-3px); }
.subject-card.maths   { background: linear-gradient(140deg, #4C7BF3, #3457C7); }
.subject-card.english { background: linear-gradient(140deg, #17B79E, #0E8577); }
.subject-card .emoji { font-size: 2.6rem; display:block; margin-bottom: 8px; }
.subject-card h2 { color:#fff; font-size: 1.6rem; margin-bottom: .1em; }
.subject-card p  { color: rgba(255,255,255,.9); margin: 0; font-size: .95rem; }

/* ---------- Mode picker ---------- */
.mode-grid { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
@media (max-width:620px){ .mode-grid{ grid-template-columns:1fr; } }
.mode-card {
  border: 2px solid var(--line); border-radius: var(--radius); padding: 24px; cursor:pointer;
  background: var(--surface); text-align:left; font-family:inherit; transition: border-color .15s, transform .1s;
}
.mode-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.mode-card .big { font-size: 2.2rem; font-weight: 900; color: var(--primary); }
.mode-card h3 { margin:.1em 0; }
.mode-card p { margin:0; color: var(--ink-soft); font-size:.92rem; }

/* ---------- Quiz ---------- */
.quiz-head { display:flex; align-items:center; justify-content:space-between; gap:16px; margin-bottom:18px; flex-wrap:wrap;}
.pill { background: var(--surface); border:1px solid var(--line); border-radius:999px; padding:6px 14px; font-weight:800; font-size:.85rem; }
.pill.subject-maths { color: var(--maths); border-color: var(--maths); background: var(--maths-soft); }
.pill.subject-english { color: var(--english); border-color: var(--english); background: var(--english-soft); }

.progress { height: 10px; background: var(--surface-2); border-radius: 999px; overflow:hidden; margin: 8px 0 22px; }
.progress > span { display:block; height:100%; background: linear-gradient(90deg, var(--maths), var(--english)); transition: width .3s ease; }

.qnum { font-weight: 800; color: var(--ink-faint); font-size:.85rem; letter-spacing:.06em; text-transform:uppercase; }
.qtopic { font-weight:800; font-size:.8rem; padding:3px 10px; border-radius:999px; background:var(--surface-2); color:var(--ink-soft); }

.passage {
  background: var(--surface-2); border-radius: var(--radius-s); padding: 18px 20px; margin: 6px 0 20px;
  font-size: 1rem; line-height: 1.7; border-left: 4px solid var(--english);
}
.passage h4 { margin:0 0 .5em; }
.stem { font-size: 1.2rem; font-weight: 800; margin: 8px 0 18px; }

.options { display: grid; gap: 12px; }
.option {
  display:flex; align-items:center; gap:14px; text-align:left; width:100%;
  padding: 15px 18px; border: 2px solid var(--line); border-radius: var(--radius-s);
  background: var(--surface); font-family:inherit; font-size: 1.05rem; font-weight:600; cursor:pointer;
  transition: border-color .12s, background .12s;
}
.option:hover { border-color: var(--primary); }
.option.selected { border-color: var(--primary); background: var(--primary-soft); }
.option .key {
  flex: 0 0 32px; height:32px; border-radius:8px; background: var(--surface-2);
  display:grid; place-items:center; font-weight:900; color: var(--ink-soft);
}
.option.selected .key { background: var(--primary); color:#fff; }

.numeric-input {
  font-family: inherit; font-size: 1.3rem; font-weight: 800; text-align:center;
  padding: 14px; width: 220px; border: 2px solid var(--line); border-radius: var(--radius-s);
  background: var(--surface); color: var(--ink);
}
.numeric-input:focus { outline:none; border-color: var(--primary); }
.numeric-suffix { font-weight:800; color: var(--ink-soft); margin-left:10px; font-size:1.1rem; }

/* Confidence gauge */
.confidence { margin-top: 26px; padding-top: 20px; border-top: 1px dashed var(--line); }
.confidence > .label { font-weight:800; font-size:.9rem; color: var(--ink-soft); margin-bottom:10px; display:block; }
.gauge { display:grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.gauge button {
  font-family: inherit; font-weight:700; font-size:.8rem; cursor:pointer;
  padding: 11px 6px; border-radius: var(--radius-s); border: 2px solid var(--line);
  background: var(--surface); color: var(--ink-soft); transition: all .12s; line-height:1.2;
}
.gauge button .dot { display:block; width:14px; height:14px; border-radius:50%; margin:0 auto 6px; }
.gauge button[data-c="1"] .dot{ background:var(--c1);} .gauge button[data-c="2"] .dot{ background:var(--c2);}
.gauge button[data-c="3"] .dot{ background:var(--c3);} .gauge button[data-c="4"] .dot{ background:var(--c4);}
.gauge button[data-c="5"] .dot{ background:var(--c5);}
.gauge button.selected { color: var(--ink); border-color: var(--ink-soft); background: var(--surface-2); transform: translateY(-2px); box-shadow: var(--shadow-s); }
@media (max-width:560px){ .gauge button{ font-size:.68rem; } }

.quiz-nav { display:flex; justify-content:space-between; align-items:center; margin-top: 26px; gap:12px; }

/* ---------- Report ---------- */
.score-hero { text-align:center; padding: 10px 0 6px; }
.score-ring {
  width: 150px; height:150px; border-radius:50%; margin: 6px auto 14px; display:grid; place-items:center;
  background: conic-gradient(var(--primary) var(--pct,0%), var(--surface-2) 0);
}
.score-ring .inner {
  width: 118px; height:118px; border-radius:50%; background: var(--surface); display:grid; place-items:center; flex-direction:column;
}
.score-ring .inner b { font-size: 2.2rem; line-height:1; }
.score-ring .inner span { font-size:.8rem; color: var(--ink-soft); font-weight:700; }

.stat-row { display:grid; grid-template-columns: repeat(3,1fr); gap:12px; margin:18px 0; }
@media (max-width:560px){ .stat-row{ grid-template-columns:1fr 1fr; } }
.stat { background: var(--surface-2); border-radius: var(--radius-s); padding:14px; text-align:center; }
.stat b { font-size:1.5rem; display:block; }
.stat span { font-size:.78rem; color: var(--ink-soft); font-weight:700; }

.topic-bar { margin: 12px 0; }
.topic-bar .row { display:flex; justify-content:space-between; font-size:.9rem; font-weight:700; margin-bottom:5px; }
.topic-bar .track { height: 14px; background: var(--surface-2); border-radius:999px; overflow:hidden; }
.topic-bar .track > span { display:block; height:100%; border-radius:999px; }
.topic-bar.good  .track > span { background: var(--secure); }
.topic-bar.mid   .track > span { background: var(--fragile); }
.topic-bar.weak  .track > span { background: var(--misconception); }

.tag { display:inline-block; padding:4px 11px; border-radius:999px; font-size:.78rem; font-weight:800; margin:2px; }
.tag.strong { background: var(--secure-soft); color: var(--secure); }
.tag.weak   { background: var(--misconc-soft); color: var(--misconception); }

/* Calibration matrix */
.matrix { display:grid; grid-template-columns: repeat(2,1fr); gap:12px; margin:10px 0; }
@media (max-width:560px){ .matrix{ grid-template-columns:1fr; } }
.cell { border-radius: var(--radius-s); padding:16px; border:1px solid var(--line); }
.cell b { font-size:1.6rem; }
.cell.secure       { background: var(--secure-soft); }
.cell.misconception{ background: var(--misconc-soft); }
.cell.fragile      { background: var(--fragile-soft); }
.cell.gap          { background: var(--gap-soft); }
.cell .cap { font-weight:800; font-size:.85rem; display:block; }
.cell .sub { font-size:.8rem; color: var(--ink-soft); }

/* Priority list */
.priority { counter-reset: pri; }
.priority .item {
  display:flex; gap:14px; align-items:flex-start; padding:16px; border:1px solid var(--line);
  border-radius: var(--radius-s); margin-bottom:12px; background: var(--surface);
}
.priority .item .rank {
  flex:0 0 34px; height:34px; border-radius:50%; background:var(--primary); color:#fff;
  display:grid; place-items:center; font-weight:900;
}
.priority .item.flag { border-color: var(--misconception); background: var(--misconc-soft); }
.priority .item.flag .rank { background: var(--misconception); }
.priority .item h3 { margin:0 0 3px; font-size:1.05rem; }
.priority .item p { margin:0; font-size:.9rem; color: var(--ink-soft); }
.priority .item .why { font-size:.82rem; margin-top:6px; color: var(--ink); }
.priority .item .go { margin-left:auto; align-self:center; white-space:nowrap; }

/* Review list */
.review-item { padding:14px 0; border-bottom:1px solid var(--line); }
.review-item:last-child { border-bottom:none; }
.review-item .badge { font-weight:800; font-size:.78rem; padding:2px 9px; border-radius:999px; }
.badge.right { background: var(--secure-soft); color: var(--secure); }
.badge.wrong { background: var(--misconc-soft); color: var(--misconception); }
.review-item .qa { font-size:.9rem; color: var(--ink-soft); margin-top:4px; }
.review-item .exp { font-size:.9rem; margin-top:6px; background:var(--surface-2); padding:10px 12px; border-radius:10px; }

.note {
  font-size:.85rem; color: var(--ink-soft); background: var(--surface-2);
  border-radius: var(--radius-s); padding: 14px 16px; margin-top: 8px;
}

/* ---------- Lessons ---------- */
.lesson-list { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
@media (max-width:620px){ .lesson-list{ grid-template-columns:1fr; } }
.lesson-card {
  border:1px solid var(--line); border-radius: var(--radius); padding:20px; background:var(--surface);
  cursor:pointer; transition: transform .1s, border-color .15s; text-align:left; font-family:inherit;
}
.lesson-card:hover { transform: translateY(-2px); border-color: var(--primary); }
.lesson-card .emoji { font-size:1.8rem; }
.lesson-card h3 { margin:.3em 0 .2em; }
.lesson-card p { margin:0; font-size:.85rem; color:var(--ink-soft); }
.lesson-card.locked { opacity:.55; }
.chip { font-size:.68rem; font-weight:800; padding:2px 8px; border-radius:999px; background:var(--surface-2); color:var(--ink-soft); text-transform:uppercase; letter-spacing:.05em;}
.chip.ready { background: var(--secure-soft); color: var(--secure); }

.lesson-section { margin-bottom: 22px; }
.lesson-section .kicker { font-weight:800; font-size:.78rem; letter-spacing:.08em; text-transform:uppercase; color: var(--english); }
.callout { background: var(--english-soft); border-radius: var(--radius-s); padding:16px 18px; margin:12px 0; border-left:4px solid var(--english); }
.callout.tip { background: var(--fragile-soft); border-left-color: var(--fragile); }
.example-box { background: var(--surface-2); border-radius: var(--radius-s); padding:16px 18px; margin:12px 0; font-size:1.05rem; }
.viz { display:flex; gap:6px; flex-wrap:wrap; margin:12px 0; align-items:center; }
.frac-block { display:inline-flex; border-radius:8px; overflow:hidden; border:2px solid var(--ink); }
.frac-block i { width:26px; height:34px; display:block; border-right:1px solid var(--ink); }
.frac-block i:last-child{ border-right:none; }
.frac-block i.on { background: var(--maths); }

.practice-q { background:var(--surface); border:2px solid var(--line); border-radius: var(--radius-s); padding:18px; margin:14px 0; }
.feedback { margin-top:12px; padding:12px 14px; border-radius:10px; font-weight:700; font-size:.95rem; display:none; }
.feedback.show { display:block; }
.feedback.correct { background: var(--secure-soft); color: var(--secure); }
.feedback.incorrect{ background: var(--misconc-soft); color: var(--misconception); }

.step-dots { display:flex; gap:8px; justify-content:center; margin:18px 0; }
.step-dots i { width:10px; height:10px; border-radius:50%; background:var(--surface-2); }
.step-dots i.on { background: var(--english); }

/* Confetti-ish celebrate */
.celebrate { text-align:center; padding: 10px; }
.celebrate .big { font-size:3rem; }

/* ---------- Utility ---------- */
.row-between { display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap; }
.spacer { height: 14px; }
.hidden { display:none !important; }
.back-link { background:none; border:none; color:var(--ink-soft); font-family:inherit; font-weight:700; cursor:pointer; padding:6px 0; font-size:.95rem; }
.back-link:hover { color: var(--primary); }

/* ---------- Print (PDF) ---------- */
@media print {
  body { background:#fff; font-size: 12pt; }
  .no-print, .topbar, .btn, .back-link, .quiz-nav { display:none !important; }
  .card { box-shadow:none; border:1px solid #ccc; break-inside: avoid; }
  .wrap { max-width:100%; padding:0; }
}

/* ==========================================================================
   Figures — inline SVG for visual (SEAG-style) questions & charts
   ========================================================================== */
.figure {
  margin: 14px 0 10px;
  display: flex;
  justify-content: center;
}
.figure svg {
  max-width: 100%;
  height: auto;
  background: var(--surface, #fff);
  border-radius: 14px;
  padding: 10px;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.05);
}
.figure-sm svg { max-width: 260px; }
.figure text { font-family: Nunito, system-ui, sans-serif; }

/* Figures print cleanly in the PDF/print report */
@media print {
  .figure svg { box-shadow: none; }
}