/* ═══════════════════════════════════════════════════════════════
   RONNY BEST MATHEMATICS — tasks.css  v5.0
   Practice · Tools-first layout · Sticky sidebar · Collapsible SEO content
   Navy + Bisque · Playfair Display + Lora + DM Sans
   CBC Senior Secondary · AdSense-compliant · Full responsive · Accessible
   ═══════════════════════════════════════════════════════════════ */

/* ─── DESIGN TOKENS ─── */
:root {
  --navy-950:  #070f1e;
  --navy-900:  #0a1628;
  --navy-800:  #0f2040;
  --navy-700:  #1a3560;
  --navy-600:  #1e4d8c;
  --navy-400:  #4a80c8;

  --bisque:        #ffe4c4;
  --bisque-light:  #fff3e8;
  --bisque-mid:    #f5ddb8;
  --bisque-dark:   #e8b87a;
  --bisque-deep:   #c8832a;

  --cream:     #faf7f2;
  --cream-100: #f4efe5;
  --cream-200: #e8dfd0;
  --cream-300: #d5cfc4;

  --ink:       #1a1612;
  --ink-70:    #3a3028;
  --ink-50:    #5a4e42;
  --ink-30:    #9a8a78;

  --green:     #1e6e36;
  --green-bg:  #e8f5ec;
  --green-dark:#155228;
  --red:       #b91c1c;
  --red-bg:    #fef2f2;

  --white:     #ffffff;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-serif:   'Lora', Georgia, serif;
  --font-ui:      'DM Sans', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  20px;
  --radius-xl:  28px;
  --radius-pill:9999px;

  --shadow-xs:  0 1px 3px rgba(10,22,40,.07);
  --shadow-sm:  0 2px 10px rgba(10,22,40,.10);
  --shadow-md:  0 6px 24px rgba(10,22,40,.13);
  --shadow-lg:  0 12px 40px rgba(10,22,40,.17);

  --transition: .24s cubic-bezier(.4,0,.2,1);

  --max-w: 1200px;
  --pad-x: clamp(1.2rem, 5%, 5rem);
  --section-py: clamp(3rem, 6vw, 5rem);

  --quicknav-h: 52px;
}

/* ─── RESET ─── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-ui);
  background: var(--cream);
  color: var(--ink);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--navy-700); transition: color var(--transition); }
a:hover { color: var(--navy-900); }
ul, ol { list-style: none; }
h1,h2,h3,h4,h5 {
  font-family: var(--font-display);
  line-height: 1.2;
  color: var(--navy-900);
  letter-spacing: -.015em;
}
p { color: var(--ink-50); }
:focus-visible {
  outline: 3px solid var(--bisque-deep);
  outline-offset: 3px;
  border-radius: 4px;
}
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ── Skip links ── */
.skip-link, .skip-link-2 {
  position: absolute; top: -100%; left: 1rem;
  background: var(--bisque-deep); color: #fff;
  padding: .6rem 1.2rem; border-radius: var(--radius-sm);
  font-weight: 700; z-index: 9999; text-decoration: none;
  transition: top .2s;
}
.skip-link-2 { left: 13rem; }
.skip-link:focus, .skip-link-2:focus { top: 1rem; }

/* ═══════════════════════════════════════════════
   HEADER
═══════════════════════════════════════════════ */
.site-header {
  background: linear-gradient(160deg, var(--navy-950) 0%, var(--navy-800) 55%, var(--navy-700) 100%);
  padding: 24px var(--pad-x);
  border-bottom: 3px solid var(--bisque-dark);
  position: relative;
  overflow: hidden;
}
.site-header::before {
  content: "∑ ∫ π √ ∞";
  position: absolute; top: 8%; right: 4%;
  font-family: var(--font-mono);
  font-size: 4rem; font-weight: 700;
  color: rgba(255,228,196,.05);
  letter-spacing: .3em;
  transform: rotate(10deg);
  pointer-events: none; user-select: none;
}
.header-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: center;
  justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}
.brand-logo {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: inherit;
}
.brand-sigma {
  width: 46px; height: 46px;
  background: var(--bisque-deep); color: #fff;
  font-family: var(--font-display); font-size: 1.5rem; font-weight: 900;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm); flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(200,131,42,.35);
}
.brand-text {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.45rem);
  font-weight: 700; color: var(--bisque-light);
  letter-spacing: -.01em; line-height: 1.2;
}
.brand-text em { display: block; font-style: normal; color: var(--bisque-dark); font-size: .85em; font-weight: 400; font-family: var(--font-serif); }
.brand-tagline { font-size: .72rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,228,196,.45); margin-top: 5px; }
.welcome-pill {
  font-family: var(--font-ui); font-size: .82rem; font-weight: 600;
  color: var(--bisque-light); background: rgba(255,228,196,.1);
  border: 1px solid rgba(255,228,196,.2); padding: .4rem 1.2rem;
  border-radius: var(--radius-pill); letter-spacing: .03em;
}

/* ═══════════════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════════════ */
.main-nav {
  background: var(--navy-900);
  position: sticky; top: 0; z-index: 500;
  box-shadow: 0 4px 20px rgba(0,0,0,.35);
  border-bottom: 2px solid var(--bisque-dark);
}
.nav-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--pad-x); position: relative; }
.nav-mobile-bar { display: none; align-items: center; justify-content: space-between; padding: .7rem 0; }
.nav-mobile-brand { font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; color: var(--bisque-light); }
.nav-mobile-brand em { font-style: normal; color: var(--bisque-dark); }
.nav-mobile-actions { display: flex; align-items: center; gap: 8px; }
.nav-hamburger {
  background: none; border: 1px solid rgba(255,228,196,.25); border-radius: var(--radius-sm);
  padding: 6px 8px; cursor: pointer; display: flex; flex-direction: column; gap: 4px; transition: var(--transition);
}
.nav-hamburger:hover { background: rgba(255,228,196,.1); }
.ham-line { display: block; width: 20px; height: 2px; background: var(--bisque); border-radius: 2px; transition: transform .25s, opacity .25s; }
.nav-hamburger[aria-expanded="true"] .ham-line:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-hamburger[aria-expanded="true"] .ham-line:nth-child(2) { opacity: 0; }
.nav-hamburger[aria-expanded="true"] .ham-line:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-search-toggle {
  background: none; border: 1px solid rgba(255,228,196,.25); border-radius: var(--radius-sm);
  padding: 7px; cursor: pointer; color: var(--bisque); display: flex; align-items: center; justify-content: center; transition: var(--transition);
}
.nav-search-toggle:hover { background: rgba(255,228,196,.1); }
.nav-search-bar { padding: .6rem 0 .4rem; position: relative; }
.nsb-inner { display: flex; align-items: center; gap: 10px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,228,196,.2); border-radius: var(--radius-md); padding: .55rem 1rem; }
.nsb-inner svg { color: rgba(255,228,196,.4); flex-shrink: 0; }
#siteSearch { flex: 1; background: none; border: none; outline: none; font-family: var(--font-ui); font-size: .9rem; color: var(--bisque-light); min-width: 0; }
#siteSearch::placeholder { color: rgba(255,228,196,.35); }
#searchClear { background: none; border: none; color: rgba(255,228,196,.4); cursor: pointer; font-size: .85rem; padding: 2px 6px; border-radius: 4px; }
#searchClear:hover { color: var(--bisque); }
.search-results { position: absolute; top: calc(100% + 4px); left: 0; right: 0; background: var(--navy-800); border: 1px solid rgba(255,228,196,.15); border-radius: var(--radius-md); z-index: 600; max-height: 320px; overflow-y: auto; box-shadow: var(--shadow-lg); }
.sr-item { display: flex; align-items: center; gap: 12px; padding: .75rem 1rem; text-decoration: none; color: var(--bisque-light); font-family: var(--font-ui); font-size: .88rem; border-bottom: 1px solid rgba(255,228,196,.06); transition: background var(--transition); }
.sr-item:last-child { border-bottom: none; }
.sr-item:hover, .sr-item:focus { background: rgba(255,228,196,.08); }
.sr-item-icon { width: 32px; height: 32px; background: rgba(255,228,196,.1); border-radius: 6px; display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: .85rem; color: var(--bisque-dark); flex-shrink: 0; }
.sr-item-text { display: flex; flex-direction: column; gap: 2px; }
.sr-item-name { font-weight: 600; color: var(--bisque-light); }
.sr-item-type { font-size: .74rem; color: rgba(255,228,196,.4); }
.sr-no-results { padding: 1rem; text-align: center; color: rgba(255,228,196,.35); font-size: .88rem; font-family: var(--font-ui); }
.nav-list { display: flex; flex-wrap: wrap; gap: 0; justify-content: center; align-items: center; }
.nav-list > li { position: relative; }
.nav-list > li > a {
  display: flex; align-items: center; gap: 4px;
  padding: .85rem 1rem; color: rgba(255,228,196,.6);
  text-decoration: none; font-family: var(--font-ui);
  font-size: .84rem; font-weight: 500; letter-spacing: .02em;
  position: relative; transition: color var(--transition), background var(--transition); white-space: nowrap;
}
.nav-list > li > a::after { content: ''; position: absolute; bottom: 0; left: 50%; width: 0; height: 3px; background: var(--bisque-dark); transition: width var(--transition), left var(--transition); border-radius: 3px 3px 0 0; }
.nav-list > li > a:hover { color: rgba(255,228,196,.95); background: rgba(255,228,196,.05); }
.nav-list > li > a:hover::after, .nav-list > li > a.active::after { width: 70%; left: 15%; }
.nav-list > li > a.active { color: var(--bisque); font-weight: 600; }
.nav-chevron { transition: transform var(--transition); flex-shrink: 0; }
.nav-dropdown { display: none; position: absolute; top: 100%; left: 0; background: var(--navy-800); border: 1px solid rgba(255,228,196,.12); border-radius: var(--radius-md); min-width: 200px; padding: .5rem; box-shadow: var(--shadow-lg); z-index: 600; animation: dropIn .18s ease; }
@keyframes dropIn { from { opacity:0; transform:translateY(-6px); } to { opacity:1; transform:translateY(0); } }
.nav-has-dropdown:hover .nav-dropdown, .nav-has-dropdown:focus-within .nav-dropdown { display: block; }
.nav-has-dropdown:hover .nav-chevron, .nav-has-dropdown:focus-within .nav-chevron { transform: rotate(180deg); }
.nav-dropdown li a { display: block; padding: .6rem .9rem; color: rgba(255,228,196,.55); font-family: var(--font-ui); font-size: .85rem; font-weight: 400; text-decoration: none; border-radius: var(--radius-sm); transition: background var(--transition), color var(--transition); }
.nav-dropdown li a:hover { background: rgba(255,228,196,.08); color: var(--bisque-light); }

/* ═══════════════════════════════════════════════
   HERO — COMPACT PRACTICE VARIANT
═══════════════════════════════════════════════ */
.site-main { flex: 1; }
.hero {
  background: linear-gradient(155deg, var(--navy-950) 0%, var(--navy-800) 50%, var(--navy-700) 100%);
  padding: clamp(2.2rem, 6vw, 3.8rem) var(--pad-x);
  display: grid; grid-template-columns: 1fr auto;
  gap: 40px; align-items: center;
  position: relative; overflow: hidden;
}
.hero-bg-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,228,196,.03) 1px,transparent 1px), linear-gradient(90deg,rgba(255,228,196,.03) 1px,transparent 1px);
  background-size: 60px 60px; pointer-events: none;
}
.hero-symbols { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hs { position: absolute; font-family: var(--font-mono); font-weight: 700; color: rgba(255,228,196,.04); line-height: 1; user-select: none; }
.hs1 { font-size: 8rem; top: 5%; right: 42%; }
.hs2 { font-size: 5rem; top: 60%; left: 3%; }
.hs3 { font-size: 6rem; bottom: 5%; right: 20%; }
.hs4 { font-size: 4rem; top: 15%; left: 15%; }
.hs5 { font-size: 10rem; bottom: -10px; left: 55%; opacity: .025; }
.hs6 { font-size: 5rem; top: 40%; right: 5%; }
.hero-content { position: relative; z-index: 1; max-width: 640px; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-ui); font-size: .74rem; font-weight: 600; letter-spacing: .09em; text-transform: uppercase; color: var(--bisque-dark); margin-bottom: 14px; flex-wrap: wrap; }
.eyebrow-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--bisque-deep); flex-shrink: 0; }
.hero h1 { font-family: var(--font-display); font-size: clamp(1.9rem, 4.4vw, 3.2rem); font-weight: 900; color: rgba(255,243,232,.95); letter-spacing: -.025em; line-height: 1.1; margin-bottom: 14px; }
.hero-accent { color: var(--bisque-dark); display: block; }
.hero-sub { font-family: var(--font-serif); font-size: .96rem; color: rgba(255,228,196,.6); line-height: 1.75; margin-bottom: 22px; max-width: 520px; }
.hero-sub strong { color: var(--bisque-dark); font-weight: 600; }

/* ── HERO TOOL BUTTONS — prominent CTA row ── */
.hero-tool-btns {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}
.htb {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: .85rem 1.5rem;
  border-radius: var(--radius-pill);
  text-decoration: none;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: .92rem;
  transition: var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}
.htb-icon { font-size: 1.05rem; line-height: 1; }
.htb-primary {
  background: var(--bisque); color: var(--navy-900);
  border-color: var(--bisque-dark);
  box-shadow: 0 4px 20px rgba(200,131,42,.3);
}
.htb-primary:hover { background: var(--bisque-light); transform: translateY(-3px); box-shadow: 0 8px 28px rgba(200,131,42,.4); }
.htb-secondary {
  background: rgba(255,228,196,.1); color: var(--bisque-light);
  border-color: rgba(255,228,196,.3);
}
.htb-secondary:hover { background: rgba(255,228,196,.18); border-color: rgba(255,228,196,.55); transform: translateY(-3px); }
.htb-tertiary {
  background: transparent; color: rgba(255,228,196,.75);
  border-color: rgba(255,228,196,.22);
}
.htb-tertiary:hover { background: rgba(255,228,196,.08); border-color: rgba(255,228,196,.4); color: var(--bisque); transform: translateY(-3px); }

.hero-stats { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.h-stat { text-align: center; }
.h-stat strong { display: block; font-family: var(--font-display); font-size: 1.4rem; font-weight: 900; color: var(--bisque-dark); line-height: 1.1; }
.h-stat span { font-size: .68rem; font-weight: 600; letter-spacing: .07em; text-transform: uppercase; color: rgba(255,228,196,.4); }
.h-stat-div { width: 1px; height: 30px; background: rgba(255,228,196,.15); flex-shrink: 0; }

.hero-formula-card { position: relative; z-index: 1; background: rgba(255,255,255,.05); border: 1px solid rgba(255,228,196,.15); backdrop-filter: blur(8px); border-radius: var(--radius-lg); padding: 24px 28px; text-align: center; min-width: 200px; box-shadow: 0 8px 32px rgba(0,0,0,.25); flex-shrink: 0; }
.hfc-label { font-family: var(--font-ui); font-size: .68rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,228,196,.4); margin-bottom: 10px; }
.hfc-formula { font-family: var(--font-mono); font-size: .95rem; color: var(--bisque); font-weight: 600; line-height: 1.75; }
.hfc-sub { font-family: var(--font-mono); font-size: .85rem; color: rgba(255,228,196,.55); margin-top: 5px; line-height: 1.65; }
.hfc-note { margin-top: 9px; font-size: .68rem; color: rgba(255,228,196,.3); font-family: var(--font-ui); }

/* ═══════════════════════════════════════════════
   FLOATING QUICK-NAV — appears after scrolling past hero
═══════════════════════════════════════════════ */
.practice-quick-nav {
  position: sticky;
  top: 0;
  z-index: 490;
  background: rgba(10,22,40,.97);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--bisque-dark);
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
  transform: translateY(-110%);
  opacity: 0;
  transition: transform .25s ease, opacity .25s ease;
  pointer-events: none;
}
.practice-quick-nav.pqn-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.pqn-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 9px var(--pad-x);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  min-height: var(--quicknav-h);
}
.pqn-label {
  font-family: var(--font-ui);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,228,196,.4);
  white-space: nowrap;
  margin-right: 2px;
}
.pqn-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  font-family: var(--font-ui);
  font-size: .8rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  border: 1.5px solid transparent;
  transition: var(--transition);
}
.pqn-primary { background: var(--bisque); color: var(--navy-900); border-color: var(--bisque-dark); }
.pqn-primary:hover { background: var(--bisque-light); transform: translateY(-2px); }
.pqn-secondary { background: rgba(255,228,196,.12); color: var(--bisque-light); border-color: rgba(255,228,196,.25); }
.pqn-secondary:hover { background: rgba(255,228,196,.2); transform: translateY(-2px); }
.pqn-tertiary { background: transparent; color: rgba(255,228,196,.7); border-color: rgba(255,228,196,.2); }
.pqn-tertiary:hover { background: rgba(255,228,196,.08); color: var(--bisque); transform: translateY(-2px); }
.pqn-ghost { background: transparent; color: rgba(255,228,196,.45); border-color: transparent; font-weight: 600; }
.pqn-ghost:hover { color: var(--bisque-dark); }

/* ═══════════════════════════════════════════════
   CBC ALIGNMENT BAND
═══════════════════════════════════════════════ */
.cbc-band { background: var(--navy-800); border-top: 1px solid rgba(255,228,196,.08); border-bottom: 2px solid var(--bisque-deep); padding: 1.4rem var(--pad-x); }
.cbc-band-inner { max-width: var(--max-w); margin: 0 auto; display: flex; align-items: center; gap: 2rem; flex-wrap: wrap; }
.cbc-band-title { font-family: var(--font-ui); font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,228,196,.4); flex-shrink: 0; white-space: nowrap; margin: 0; }
.cbc-pillars { display: flex; flex-wrap: wrap; gap: 1rem; flex: 1; }
.cbc-pillar { display: flex; align-items: center; gap: 8px; background: rgba(255,228,196,.06); border: 1px solid rgba(255,228,196,.12); border-radius: var(--radius-pill); padding: .4rem 1rem .4rem .5rem; }
.cbc-pillar-icon { font-size: 1rem; line-height: 1; }
.cbc-pillar strong { font-family: var(--font-ui); font-size: .78rem; font-weight: 700; color: var(--bisque-dark); letter-spacing: .04em; }
.cbc-pillar span { font-size: .75rem; color: rgba(255,228,196,.35); font-family: var(--font-ui); }

/* ═══════════════════════════════════════════════
   PAGE LAYOUT: SIDEBAR + CONTENT
═══════════════════════════════════════════════ */
.page-layout {
  max-width: var(--max-w); margin: 0 auto;
  padding: 2rem var(--pad-x) 4rem;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 28px;
  align-items: start;
}

/* ── SIDEBAR ── */
.practice-sidebar { position: sticky; top: 80px; }
.sidebar-panel { background: var(--white); border: 1px solid var(--cream-200); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
.sidebar-panel-head { padding: 14px 18px; border-bottom: 1px solid var(--cream-200); }
.sidebar-label { font-family: var(--font-ui); font-size: .7rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-30); }
.sidebar-group { padding: 8px 0; }
.sidebar-group + .sidebar-group { border-top: 1px solid var(--cream-200); }
.sidebar-group-label { font-family: var(--font-ui); font-size: .66rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-30); padding: 6px 18px 3px; }
.sidebar-link { display: block; padding: 7px 18px; font-family: var(--font-ui); font-size: .84rem; font-weight: 400; color: var(--ink-50); text-decoration: none; border-left: 3px solid transparent; transition: background var(--transition), color var(--transition), border-color var(--transition); }
.sidebar-link:hover { background: rgba(200,131,42,.06); color: var(--bisque-deep); border-left-color: var(--bisque-dark); }
.sidebar-link.active { background: rgba(200,131,42,.08); color: var(--bisque-deep); border-left-color: var(--bisque-deep); font-weight: 600; }

/* Practice-tool links get special priority styling */
.sidebar-group-tools { background: linear-gradient(180deg, rgba(200,131,42,.04) 0%, transparent 100%); }
.sidebar-link-tool {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700 !important;
  padding: 9px 18px;
}
.sidebar-link-tool span { font-size: 1rem; flex-shrink: 0; }
.sidebar-link-tool-primary { color: var(--navy-700) !important; }
.sidebar-link-tool-primary:hover { background: rgba(200,131,42,.1); border-left-color: var(--bisque-deep); }
.sidebar-link-tool-secondary { color: var(--navy-700) !important; }
.sidebar-link-tool-tertiary { color: var(--navy-700) !important; }

.sidebar-group-cta { padding: 14px 18px; }
.sidebar-mwalimu-btn { display: flex; align-items: center; justify-content: center; gap: 6px; background: var(--navy-700); color: var(--bisque-light); font-family: var(--font-ui); font-weight: 700; font-size: .85rem; padding: .65rem 1rem; border-radius: var(--radius-pill); text-decoration: none; transition: var(--transition); text-align: center; }
.sidebar-mwalimu-btn:hover { background: var(--bisque-deep); color: #fff; }
.sidebar-mwalimu-note { font-family: var(--font-ui); font-size: .72rem; color: var(--ink-30); text-align: center; margin-top: 6px; line-height: 1.4; }

/* ═══════════════════════════════════════════════
   PRACTICE SECTIONS (generator, ask, scan — always open)
═══════════════════════════════════════════════ */
.practice-content { display: flex; flex-direction: column; gap: 20px; }
.practice-section { background: var(--white); border: 1px solid var(--cream-200); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
.practice-section-featured { border: 2px solid var(--bisque-dark); box-shadow: 0 4px 24px rgba(200,131,42,.12); }

.ps-header { padding: 1rem 1.4rem .9rem; border-bottom: 2px solid var(--cream-200); display: flex; align-items: center; gap: .7rem; }
.ps-header-featured { background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 100%); border-bottom-color: var(--bisque-dark); }
.ps-header-featured h2 { color: var(--bisque-light) !important; }
.ps-header-featured .ps-badge { background: rgba(255,228,196,.15) !important; color: var(--bisque-dark) !important; border-color: rgba(255,228,196,.3) !important; }
.ps-icon { font-size: 1.25rem; line-height: 1; flex-shrink: 0; }
.ps-header h2 { font-family: var(--font-display); font-size: 1.2rem; color: var(--navy-800); font-weight: 700; margin: 0; }
.ps-badge { display: inline-block; padding: .22rem .7rem; border-radius: var(--radius-pill); font-family: var(--font-ui); font-size: .7rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; background: rgba(200,131,42,.1); color: var(--bisque-deep); border: 1px solid rgba(200,131,42,.2); white-space: nowrap; margin-left: auto; }
.ps-badge-secondary { background: var(--green-bg); color: var(--green-dark); border-color: rgba(30,110,54,.2); }
.ps-body { padding: 1.3rem 1.4rem 1.5rem; }
.ps-intro { font-family: var(--font-ui); font-size: .93rem; color: var(--ink-50); line-height: 1.8; margin-bottom: 1.2rem; }
.ps-body > p { font-family: var(--font-ui); font-size: .93rem; color: var(--ink-50); line-height: 1.8; margin-bottom: .9rem; }
.ps-body > p strong { color: var(--navy-800); font-weight: 600; }
.ps-body > p a { color: var(--navy-700); font-weight: 600; }

/* Info callout */
.info-callout { display: flex; gap: 12px; align-items: flex-start; background: rgba(200,131,42,.06); border: 1px solid rgba(200,131,42,.2); border-left: 4px solid var(--bisque-deep); border-radius: var(--radius-sm); padding: .9rem 1rem; margin-top: 1rem; }
.info-callout-icon { font-size: 1.2rem; flex-shrink: 0; margin-top: 1px; }
.info-callout div { font-family: var(--font-ui); font-size: .88rem; color: var(--ink-50); line-height: 1.7; }
.info-callout strong { color: var(--navy-800); }

.section-eyebrow { display: inline-block; font-family: var(--font-ui); font-size: .7rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--bisque-deep); background: rgba(200,131,42,.1); border: 1px solid rgba(200,131,42,.2); padding: .28rem .85rem; border-radius: var(--radius-pill); margin-bottom: .6rem; }

/* ═══════════════════════════════════════════════
   COLLAPSIBLE SEO SECTIONS (details/summary)
   Worked samples, topics covered, how-to, study method, errors
═══════════════════════════════════════════════ */
.practice-collapsible {
  background: var(--white);
  border: 1px solid var(--cream-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.pc-summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 1rem 1.4rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
  background: var(--cream-100);
  border-bottom: 1px solid transparent;
  transition: background var(--transition);
}
.pc-summary::-webkit-details-marker { display: none; }
.pc-summary:hover { background: var(--cream-200); }
.practice-collapsible[open] .pc-summary { border-bottom-color: var(--cream-200); }

.pc-summary-icon { font-size: 1.2rem; flex-shrink: 0; }
.pc-summary-title { flex: 1; font-family: var(--font-display); font-size: 1.05rem; font-weight: 700; color: var(--navy-800); }
.pc-summary-count {
  font-family: var(--font-ui); font-size: .68rem; font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--bisque-deep); background: rgba(200,131,42,.1);
  border: 1px solid rgba(200,131,42,.2);
  padding: 3px 10px; border-radius: var(--radius-pill);
  white-space: nowrap; flex-shrink: 0;
}
.pc-chevron { color: var(--ink-30); flex-shrink: 0; transition: transform .25s; }
.practice-collapsible[open] .pc-chevron { transform: rotate(180deg); }

.pc-body { padding: 1.3rem 1.4rem 1.5rem; }
.pc-body .ps-intro { margin-bottom: 1.2rem; }
.pc-body > p { font-family: var(--font-ui); font-size: .93rem; color: var(--ink-50); line-height: 1.8; margin-bottom: .9rem; }
.pc-body > p strong { color: var(--navy-800); font-weight: 600; }
.pc-body > p a { color: var(--navy-700); font-weight: 600; }
.pc-body > p:last-of-type { margin-bottom: 0; }

/* ═══════════════════════════════════════════════
   TOPICS GRID
═══════════════════════════════════════════════ */
.topics-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 14px; margin-top: 1.2rem; }
.topic-card { background: var(--cream-100); border: 1px solid var(--cream-200); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-xs); transition: transform var(--transition), box-shadow var(--transition); display: flex; flex-direction: column; }
.topic-card.hidden { display: none; }
.topic-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.tc-stripe { height: 4px; width: 100%; }
.tc-algebra     { background: var(--navy-700); }
.tc-logarithms  { background: #7a4a14; }
.tc-sequences   { background: #1d6e6e; }
.tc-complex     { background: #7a1060; }
.tc-trig        { background: #7a4a14; }
.tc-statistics  { background: var(--green); }
.tc-calculus    { background: #5b3a8a; }
.tc-limits      { background: #3a5f8a; }
.tc-integration { background: #3a5f8a; }
.tc-matrices    { background: #6b3c14; }
.tc-vectors     { background: var(--bisque-deep); }
.tc-areas       { background: #3a7a30; }
.tc-volumes     { background: #1a5080; }
.tc-inner { padding: 14px 16px 14px; display: flex; flex-direction: column; flex: 1; }
.tc-head { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 8px; }
.tc-sym { width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; background: var(--white); border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: .88rem; color: var(--navy-700); font-weight: 700; flex-shrink: 0; margin-top: 2px; border: 1px solid var(--cream-200); }
.tc-head h3 { font-size: .98rem; color: var(--navy-800); margin: 0 0 3px; }
.tc-tag { font-family: var(--font-ui); font-size: .66rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--bisque-deep); }
.tc-desc { font-family: var(--font-ui); font-size: .83rem; color: var(--ink-50); line-height: 1.6; margin-bottom: 8px; }
.tc-list { flex: 1; display: flex; flex-direction: column; gap: 4px; margin-bottom: 10px; }
.tc-list li { font-family: var(--font-mono); font-size: .78rem; color: var(--navy-800); background: var(--white); border-radius: 4px; border-left: 2px solid var(--cream-300); padding: 4px 8px; line-height: 1.4; }
.tc-link { display: inline-flex; align-items: center; gap: 4px; font-family: var(--font-ui); font-size: .82rem; font-weight: 700; color: var(--navy-700); text-decoration: none; border-bottom: 2px solid transparent; transition: var(--transition); padding: 4px 0; margin-top: auto; }
.tc-link:hover { color: var(--navy-900); border-bottom-color: var(--navy-700); }

/* Topics toolbar */
.topics-toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: .7rem .9rem; background: var(--cream-100); border: 1px solid var(--cream-200); border-radius: var(--radius-md); }
.toolbar-label { font-family: var(--font-ui); font-size: .75rem; font-weight: 700; color: var(--ink-30); text-transform: uppercase; letter-spacing: .07em; white-space: nowrap; }
.toolbar-filters { display: flex; flex-wrap: wrap; gap: 6px; }
.filter-btn { font-family: var(--font-ui); font-size: .79rem; font-weight: 600; padding: .32rem .85rem; border-radius: var(--radius-pill); border: 1.5px solid var(--cream-200); background: var(--white); color: var(--ink-50); cursor: pointer; transition: var(--transition); white-space: nowrap; }
.filter-btn:hover { border-color: var(--navy-700); color: var(--navy-700); }
.filter-btn.active { background: var(--navy-700); border-color: var(--navy-700); color: var(--bisque-light); }

/* ═══════════════════════════════════════════════
   WORKED SAMPLES
═══════════════════════════════════════════════ */
.samples-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.sample-card { background: var(--cream-100); border: 1px solid var(--cream-200); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-xs); transition: var(--transition); }
.sample-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.sample-topic { font-family: var(--font-ui); font-size: .68rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--white); background: var(--navy-700); padding: .35rem .9rem; }
.sample-card:nth-child(2) .sample-topic { background: var(--bisque-deep); }
.sample-card:nth-child(3) .sample-topic { background: var(--green); }
.sample-card:nth-child(4) .sample-topic { background: #1d6e6e; }
.sample-card:nth-child(5) .sample-topic { background: #7a4a14; }
.sample-card:nth-child(6) .sample-topic { background: #5b3a8a; }
.sample-problem { font-family: var(--font-mono); font-size: .86rem; color: var(--navy-800); font-weight: 600; padding: .8rem .9rem .5rem; line-height: 1.5; }
.sample-solution { padding: 0 .9rem .9rem; }
.ss-rule { font-family: var(--font-ui); font-size: .76rem; font-style: italic; color: var(--bisque-deep); background: rgba(200,131,42,.07); border-left: 3px solid var(--bisque-dark); padding: .35rem .7rem; border-radius: 0 4px 4px 0; margin-bottom: .6rem; }
.ss-steps { list-style: decimal; padding-left: 18px; display: flex; flex-direction: column; gap: 3px; margin-bottom: .6rem; }
.ss-steps li { font-family: var(--font-mono); font-size: .8rem; color: var(--ink-50); line-height: 1.5; }
.ss-answer { font-family: var(--font-mono); font-size: .88rem; font-weight: 700; color: var(--green); background: var(--green-bg); border: 1px solid rgba(30,110,54,.2); border-radius: var(--radius-sm); padding: .45rem .8rem; display: inline-block; }

/* ═══════════════════════════════════════════════
   PRACTICE GENERATOR — dark themed (matches featured header)
═══════════════════════════════════════════════ */
.generator-controls { display: flex; align-items: flex-end; gap: 12px; flex-wrap: wrap; margin-bottom: 1rem; }
.gen-select-wrap { flex: 1; min-width: 220px; }
.gen-label { display: block; font-family: var(--font-ui); font-size: .76rem; font-weight: 700; color: rgba(255,228,196,.5); text-transform: uppercase; letter-spacing: .07em; margin-bottom: .5rem; }
select, input[type="text"], textarea {
  width: 100%;
  font-family: var(--font-ui); font-size: .95rem;
  border-radius: var(--radius-sm); outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
#topicSelect { padding: .7rem 1rem; border: 1.5px solid rgba(255,228,196,.2); background: rgba(255,255,255,.08); color: var(--bisque-light); cursor: pointer; }
#topicSelect:focus { border-color: var(--bisque-dark); box-shadow: 0 0 0 3px rgba(200,131,42,.2); }
#topicSelect option, #topicSelect optgroup { background: var(--navy-900); color: var(--bisque-light); }
.btn-generate { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-ui); font-weight: 700; font-size: .9rem; padding: .72rem 1.4rem; border: none; border-radius: var(--radius-pill); background: var(--bisque); color: var(--navy-900); cursor: pointer; transition: var(--transition); white-space: nowrap; box-shadow: 0 4px 16px rgba(200,131,42,.3); }
.btn-generate:hover { background: var(--bisque-light); transform: translateY(-2px); box-shadow: 0 6px 22px rgba(200,131,42,.4); }

/* Quick-pick topic pills */
.quick-topic-pills {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
  margin: 0 0 1rem;
  padding: .7rem .8rem;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,228,196,.12);
  border-radius: var(--radius-md);
}
.qtp-label {
  font-family: var(--font-ui); font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .07em;
  color: rgba(255,228,196,.4); white-space: nowrap; margin-right: 2px;
}
.qtp-btn {
  font-family: var(--font-mono);
  font-size: .82rem; font-weight: 600;
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  border: 1.5px solid rgba(255,228,196,.2);
  background: rgba(255,255,255,.05);
  color: rgba(255,228,196,.7);
  cursor: pointer;
  transition: var(--transition);
}
.qtp-btn:hover { background: rgba(255,228,196,.12); border-color: rgba(255,228,196,.4); color: var(--bisque-light); }
.qtp-btn.active { background: var(--bisque-dark); border-color: var(--bisque-dark); color: var(--navy-900); font-weight: 700; }

/* Problem display */
.problem-display { font-family: var(--font-mono); font-size: .95rem; line-height: 1.85; padding: 1.1rem 1.2rem; background: rgba(255,255,255,.05); border: 1px solid rgba(255,228,196,.15); border-radius: var(--radius-sm); margin-top: .8rem; color: var(--bisque-light); overflow-x: auto; }
.problem-display:empty { display: none; }

/* Answer row */
.answer-row { margin-top: .9rem; }
.answer-label { display: block; font-family: var(--font-ui); font-size: .76rem; font-weight: 700; color: rgba(255,228,196,.45); text-transform: uppercase; letter-spacing: .07em; margin-bottom: .45rem; }
.answer-input-wrap { display: flex; gap: 10px; flex-wrap: wrap; }
.answer-input-wrap input[type="text"] { flex: 1; min-width: 200px; padding: .68rem 1rem; border: 1.5px solid rgba(255,228,196,.2); background: rgba(255,255,255,.08); color: var(--bisque-light); }
.answer-input-wrap input[type="text"]:focus { border-color: var(--bisque-dark); box-shadow: 0 0 0 3px rgba(200,131,42,.2); }
.answer-input-wrap input::placeholder { color: rgba(255,228,196,.3); }
.btn-check { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-ui); font-weight: 700; font-size: .88rem; padding: .68rem 1.3rem; border: none; border-radius: var(--radius-pill); background: var(--green); color: #fff; cursor: pointer; transition: var(--transition); white-space: nowrap; }
.btn-check:hover { background: var(--green-dark); transform: translateY(-1px); }

/* Result display */
.result-display { font-family: var(--font-ui); font-size: 1rem; font-weight: 700; min-height: 1.5em; padding: .6rem 0; margin-top: .5rem; }
.result-display.correct   { color: #6dca89; }
.result-display.incorrect { color: #ff8a80; }

/* Solution display */
.solution-display { font-family: var(--font-ui); font-size: .9rem; line-height: 1.8; padding: 1.1rem 1.2rem; background: rgba(255,228,196,.04); border: 1px solid rgba(255,228,196,.12); border-left: 4px solid var(--bisque-dark); border-radius: var(--radius-sm); margin-top: .7rem; color: var(--bisque-light); }
.solution-display:empty { display: none; }
.steps-header { font-family: var(--font-ui); font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: rgba(255,228,196,.35); margin-bottom: .75rem; padding-bottom: .5rem; border-bottom: 1px solid rgba(255,228,196,.1); }
.solution-step { display: flex; gap: .75rem; padding: .65rem .85rem; background: rgba(255,255,255,.04); border-radius: var(--radius-sm); border-left: 3px solid var(--navy-600); margin-bottom: .5rem; }
.step-num { font-family: var(--font-ui); font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--bisque-dark); flex-shrink: 0; padding-top: 2px; min-width: 44px; }
.step-body { flex: 1; font-family: var(--font-mono); font-size: .87rem; color: rgba(255,228,196,.75); line-height: 1.7; }
.solution-note { padding: .55rem .9rem; background: rgba(200,131,42,.08); border-left: 3px solid var(--bisque-dark); border-radius: var(--radius-sm); font-size: .86rem; color: rgba(255,228,196,.6); margin-bottom: .5rem; font-style: italic; }
.rule-box { padding: .5rem .9rem; background: rgba(255,255,255,.04); border-left: 3px solid rgba(255,228,196,.25); border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: .84rem; color: rgba(255,228,196,.5); font-style: italic; margin-bottom: .5rem; }
.final-answer-block { margin-top: .6rem; padding: .7rem 1rem; background: rgba(30,110,54,.15); border: 1.5px solid rgba(30,110,54,.4); border-radius: var(--radius-sm); font-family: var(--font-ui); font-size: .92rem; font-weight: 700; color: #6dca89; }

/* ═══════════════════════════════════════════════
   GENERATOR LIGHT-MODE PATCH (overrides dark defaults above)
   These rules were merged in from tasks-patch.css
═══════════════════════════════════════════════ */
#practice-generator .ps-body {
  background: #ffffff;
  padding: 1.5rem 1.6rem 1.8rem;
}
#practice-generator .ps-body .ps-intro,
#practice-generator .ps-body > p {
  color: #5a4e42;
  font-size: .93rem;
  line-height: 1.8;
  margin-bottom: 1rem;
}
#practice-generator .gen-label {
  display: block;
  color: #3a3028;
  font-family: 'DM Sans', sans-serif;
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: .5rem;
}
#topicSelect { display: none !important; }

/* Quick-pick pills in light mode */
#practice-generator .quick-topic-pills {
  background: #f4efe5;
  border: 1px solid #e8dfd0;
}
#practice-generator .qtp-label { color: #9a8a78; }
#practice-generator .qtp-btn {
  background: #ffffff;
  border-color: #d5cfc4;
  color: #5a4e42;
}
#practice-generator .qtp-btn:hover { background: #fff3e8; border-color: #c8832a; color: #0a1628; }
#practice-generator .qtp-btn.active { background: #c8832a; border-color: #c8832a; color: #fff; }

/* Custom dropdown */
.custom-select { position: relative; width: 100%; }
.custom-select-trigger {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  width: 100%; padding: .75rem 1rem;
  background: #f4efe5; border: 1.5px solid #d5cfc4; border-radius: 8px;
  font-family: 'DM Sans', sans-serif; font-size: .95rem; color: #1a1612;
  cursor: pointer; user-select: none; transition: border-color .2s, box-shadow .2s;
}
.custom-select-trigger:hover { border-color: #c8832a; }
.custom-select-trigger.open { border-color: #c8832a; box-shadow: 0 0 0 3px rgba(200,131,42,.18); border-radius: 8px 8px 0 0; }
.custom-select-arrow { flex-shrink: 0; transition: transform .2s; color: #9a8a78; }
.custom-select-trigger.open .custom-select-arrow { transform: rotate(180deg); }

.custom-select-dropdown {
  display: none; position: absolute; top: 100%; left: 0; right: 0;
  background: #ffffff; border: 1.5px solid #c8832a; border-top: none;
  border-radius: 0 0 8px 8px; max-height: min(420px, 60vh); overflow-y: auto;
  z-index: 9999; box-shadow: 0 8px 24px rgba(10,22,40,.15);
}
.custom-select-dropdown.open { display: block; }
.custom-select-group-label {
  padding: .6rem 1rem .35rem; font-family: 'DM Sans', sans-serif;
  font-size: .69rem; font-weight: 700; text-transform: uppercase; letter-spacing: .1em;
  color: #ffffff; background: #1a3560; border-top: 1px solid #e8dfd0; position: static;
}
.custom-select-group-label:first-child { border-top: none; }
.custom-select-option {
  padding: .65rem 1rem; font-family: 'DM Sans', sans-serif; font-size: .92rem;
  color: #1a1612; cursor: pointer; transition: background .15s, color .15s;
  border-left: 3px solid transparent;
}
.custom-select-option:hover { background: #fff3e8; border-left-color: #c8832a; color: #0a1628; }
.custom-select-option.selected { background: #fff3e8; border-left-color: #c8832a; font-weight: 600; color: #0a1628; }

/* Generate button light override */
#generateTaskBtn {
  display: inline-flex !important; align-items: center; gap: 8px;
  background: #ffe4c4; color: #0a1628;
  font-family: 'DM Sans', sans-serif; font-weight: 700; font-size: .95rem;
  padding: .78rem 1.6rem; border: 2px solid #e8b87a; border-radius: 9999px;
  cursor: pointer; white-space: nowrap; transition: background .2s, transform .2s, box-shadow .2s;
  box-shadow: 0 4px 16px rgba(200,131,42,.25);
}
#generateTaskBtn:hover { background: #fff3e8; transform: translateY(-2px); box-shadow: 0 6px 22px rgba(200,131,42,.35); }

/* Generated problem box light override */
#taskDisplay {
  font-family: 'JetBrains Mono', monospace; font-size: .97rem; line-height: 1.85;
  padding: 1rem 1.2rem; background: #f4efe5; border: 1px solid #d5cfc4;
  border-left: 4px solid #1a3560; border-radius: 8px; margin-top: .9rem; color: #1a1612;
}
#taskDisplay:empty { display: none; }

#practice-generator .answer-label {
  color: #3a3028 !important; display: block; font-size: .75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .07em; margin-bottom: .4rem;
}
#answerInput {
  padding: .68rem 1rem !important; border: 1.5px solid #d5cfc4 !important;
  background: #faf7f2 !important; color: #1a1612 !important; border-radius: 8px !important;
}
#answerInput::placeholder { color: #9a8a78 !important; }
#answerInput:focus {
  border-color: #c8832a !important; box-shadow: 0 0 0 3px rgba(200,131,42,.15) !important;
  background: #fff !important; outline: none !important;
}

#resultDisplay { font-weight: 700; font-size: 1rem; padding: .5rem 0; }
#resultDisplay.correct   { color: #1e6e36 !important; }
#resultDisplay.incorrect { color: #b91c1c !important; }

#solutionSteps {
  padding: 1.1rem 1.2rem; background: #f4efe5; border: 1px solid #d5cfc4;
  border-left: 4px solid #c8832a; border-radius: 8px; margin-top: .8rem;
  font-size: .9rem; line-height: 1.8; color: #1a1612;
}
#solutionSteps:empty { display: none; }
#solutionSteps, #solutionSteps * { color: #1a1612; }
#solutionSteps .steps-header {
  color: #9a8a78 !important; font-size: .72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .1em; margin-bottom: .75rem; padding-bottom: .5rem; border-bottom: 1px solid #e8dfd0;
}
#solutionSteps .solution-step {
  display: flex; gap: .75rem; padding: .65rem .85rem; background: #ffffff;
  border-radius: 6px; border-left: 3px solid #1a3560; margin-bottom: .5rem;
}
#solutionSteps .step-num {
  color: #c8832a !important; font-size: .7rem; font-weight: 700; text-transform: uppercase;
  flex-shrink: 0; min-width: 44px; padding-top: 2px;
}
#solutionSteps .step-body { color: #3a3028 !important; font-family: 'JetBrains Mono', monospace; font-size: .86rem; line-height: 1.7; }
#solutionSteps strong { color: #0f2040 !important; font-weight: 700; }
#solutionSteps .rule-box {
  padding: .5rem .9rem; background: rgba(200,131,42,.07); border-left: 3px solid #e8b87a;
  border-radius: 0 4px 4px 0; font-size: .84rem; color: #7a5c00 !important; font-style: italic; margin-bottom: .5rem;
}
#solutionSteps .solution-note {
  padding: .55rem .9rem; background: rgba(200,131,42,.07); border-left: 3px solid #e8b87a;
  border-radius: 4px; font-size: .86rem; color: #5a4e42 !important; font-style: italic; margin-bottom: .5rem;
}
#solutionSteps .final-answer-block {
  margin-top: .6rem; padding: .7rem 1rem; background: #e8f5ec; border: 1.5px solid rgba(30,110,54,.35);
  border-radius: 8px; font-size: .92rem; font-weight: 700; color: #155228 !important;
}

#freeAnswer { color: #1a1612 !important; }
#freeAnswer * { color: #1a1612 !important; }
#freeAnswer .ans-label { color: #1a4d8c !important; }
#freeAnswer .ans-value { color: #0f2040 !important; font-family: monospace; }
#freeSteps { color: #1a1612 !important; }
#freeSteps * { color: #3a3028 !important; }
#freeSteps .steps-header { color: #1a3560 !important; border-bottom: 1px solid #e8dfd0; }
#freeSteps .step-num { color: #c8832a !important; }
#freeSteps .step-body { color: #5a4e42 !important; }
#freeSteps strong { color: #0f2040 !important; }
#freeSteps .rule-box { color: #7a5c00 !important; background: rgba(200,131,42,.06) !important; border-left-color: #e8b87a !important; }
#freeSteps .solution-note { color: #5a4e42 !important; background: rgba(200,131,42,.06) !important; }
#freeSteps .final-answer-block { color: #155228 !important; background: #e8f5ec !important; }

#practice-generator { overflow: visible; }
#practice-generator .ps-header-featured { border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
#practice-generator .ps-body { border-radius: 0 0 var(--radius-lg) var(--radius-lg); }

/* ═══════════════════════════════════════════════
   ASK ANY QUESTION
═══════════════════════════════════════════════ */
.example-pills-row { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 1rem; }
.pills-label { font-family: var(--font-ui); font-size: .74rem; font-weight: 700; color: var(--ink-30); text-transform: uppercase; letter-spacing: .06em; }
.example-pill { background: var(--cream-100); border: 1px solid var(--cream-200); border-radius: var(--radius-pill); padding: .28rem .85rem; font-family: var(--font-ui); font-size: .79rem; color: var(--ink-50); font-weight: 600; cursor: pointer; transition: var(--transition); }
.example-pill:hover { background: rgba(200,131,42,.08); border-color: var(--bisque-dark); color: var(--bisque-deep); }

.ask-input-wrap { position: relative; display: flex; flex-direction: column; gap: .7rem; }
textarea { padding: .75rem 1rem; border: 1.5px solid var(--cream-200); border-radius: var(--radius-md); background: var(--cream-100); color: var(--ink); min-height: 100px; resize: vertical; line-height: 1.65; font-size: .93rem; }
textarea:focus { border-color: var(--bisque-dark); box-shadow: 0 0 0 3px rgba(200,131,42,.1); background: var(--white); }
.btn-solve { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-ui); font-weight: 700; font-size: .9rem; padding: .72rem 1.5rem; border: none; border-radius: var(--radius-pill); background: var(--navy-700); color: var(--bisque-light); cursor: pointer; transition: var(--transition); align-self: flex-start; }
.btn-solve:hover { background: var(--navy-800); color: var(--bisque); transform: translateY(-2px); }

#freeAnswer { margin-top: .8rem; padding: 1rem 1.2rem; background: #eef5ff; border: 1px solid #b8d0f5; border-radius: var(--radius-sm); font-size: .95rem; line-height: 1.75; }
#freeAnswer:empty { display: none; }
.free-answer-box { display: flex; flex-direction: column; gap: .3rem; }
.ans-label { font-family: var(--font-ui); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 700; }
.ans-value { font-family: var(--font-mono); font-size: 1.05rem; font-weight: 600; }
#freeSteps { margin-top: .6rem; padding: 1rem 1.2rem; background: var(--cream-100); border: 1px solid var(--cream-200); border-radius: var(--radius-sm); font-size: .9rem; line-height: 1.8; }
#freeSteps:empty { display: none; }

/* ═══════════════════════════════════════════════
   ASK MWALIMU BANNER
═══════════════════════════════════════════════ */
.mwalimu-banner-section { background: linear-gradient(155deg, var(--navy-950) 0%, var(--navy-800) 55%, var(--navy-700) 100%); border-radius: var(--radius-xl); border: 1px solid rgba(255,228,196,.12); overflow: hidden; box-shadow: var(--shadow-lg); }
.mwalimu-banner-inner { padding: clamp(1.5rem, 4vw, 2.5rem); display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.mwalimu-banner-content { flex: 1; min-width: 220px; }
.mwalimu-banner-content h2 { font-size: clamp(1.4rem, 2.5vw, 1.8rem); color: var(--bisque-light); margin-bottom: .6rem; }
.mwalimu-banner-content p { font-family: var(--font-ui); font-size: .93rem; color: rgba(255,228,196,.55); line-height: 1.8; margin-bottom: 1rem; }
.mwalimu-banner-content strong { color: var(--bisque-dark); }
.mwalimu-features { display: flex; flex-direction: column; gap: .3rem; }
.mwalimu-features li { font-family: var(--font-ui); font-size: .86rem; color: rgba(255,228,196,.6); font-weight: 500; }
.mwalimu-banner-action { display: flex; flex-direction: column; align-items: center; gap: .75rem; flex-shrink: 0; }
.btn-mwalimu { display: inline-flex; align-items: center; gap: 8px; background: var(--bisque); color: var(--navy-900); font-family: var(--font-ui); font-weight: 700; font-size: .95rem; padding: .85rem 1.8rem; border-radius: var(--radius-pill); text-decoration: none; transition: var(--transition); box-shadow: 0 4px 20px rgba(200,131,42,.3); border: 2px solid var(--bisque-dark); white-space: nowrap; }
.btn-mwalimu:hover { background: var(--bisque-light); color: var(--navy-900); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(200,131,42,.4); }
.mwalimu-note { font-family: var(--font-ui); font-size: .76rem; color: rgba(255,228,196,.35); text-align: center; }

/* ═══════════════════════════════════════════════
   IMAGE SCANNER
═══════════════════════════════════════════════ */
.scan-tips-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 1rem; }
.scan-tip { font-family: var(--font-ui); font-size: .82rem; color: var(--ink-50); background: var(--cream-100); border: 1px solid var(--cream-200); border-radius: var(--radius-pill); padding: .28rem .85rem; }
.file-drop-zone { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .45rem; padding: 1.8rem 1rem; border: 2px dashed var(--cream-300); border-radius: var(--radius-md); background: var(--cream-100); cursor: pointer; text-align: center; transition: border-color var(--transition), background var(--transition); margin-bottom: .85rem; }
.file-drop-zone:hover { border-color: var(--bisque-dark); background: rgba(200,131,42,.04); }
.fdz-icon { font-size: 2rem; }
.fdz-text { font-family: var(--font-ui); font-size: .93rem; color: var(--ink-50); font-weight: 600; }
.fdz-sub { font-family: var(--font-ui); font-size: .76rem; color: var(--ink-30); }
input[type="file"] { display: none; }
.btn-scan { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-ui); font-weight: 700; font-size: .9rem; padding: .72rem 1.4rem; border: none; border-radius: var(--radius-pill); background: var(--navy-700); color: var(--bisque-light); cursor: pointer; transition: var(--transition); margin-bottom: .85rem; }
.btn-scan:hover { background: var(--navy-800); color: var(--bisque); }
#ocrStatus { padding: .55rem .9rem; border-radius: var(--radius-sm); font-family: var(--font-ui); font-size: .86rem; font-weight: 600; margin-bottom: .6rem; }
#ocrStatus:empty { display: none; }
.status-info       { background: rgba(200,131,42,.08); color: var(--bisque-deep); border-left: 3px solid var(--bisque-dark); }
.status-processing { background: rgba(30,77,140,.1); color: var(--navy-600); border-left: 3px solid var(--navy-600); animation: pulse 1.5s infinite; }
.status-success    { background: var(--green-bg); color: var(--green-dark); border-left: 3px solid var(--green); }
.status-warning    { background: #fff3e0; color: #b45309; border-left: 3px solid #f59e0b; }
.status-error      { background: var(--red-bg); color: var(--red); border-left: 3px solid var(--red); }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.75} }

/* ═══════════════════════════════════════════════
   STUDY METHOD STEPS
═══════════════════════════════════════════════ */
.study-steps { display: flex; flex-direction: column; gap: 0; }
.study-step { display: flex; gap: 1.2rem; padding: 1.3rem 0; align-items: flex-start; }
.study-step + .study-step { border-top: 1px solid var(--cream-200); }
.sstep-num { width: 40px; height: 40px; flex-shrink: 0; background: var(--navy-700); color: var(--bisque-dark); font-family: var(--font-display); font-size: 1.15rem; font-weight: 900; display: flex; align-items: center; justify-content: center; border-radius: 50%; box-shadow: 0 4px 12px rgba(10,22,40,.15); }
.sstep-body h3 { font-size: 1rem; color: var(--navy-800); margin-bottom: .35rem; }
.sstep-body p { font-family: var(--font-ui); font-size: .9rem; color: var(--ink-50); line-height: 1.75; }
.sstep-body a { color: var(--navy-700); font-weight: 600; }

/* ═══════════════════════════════════════════════
   COMMON ERRORS GRID
═══════════════════════════════════════════════ */
.errors-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.error-item { background: var(--cream-100); border: 1px solid var(--cream-200); border-radius: var(--radius-sm); padding: 1rem 1.1rem; }
.error-topic { font-family: var(--font-mono); font-size: .8rem; font-weight: 700; color: var(--navy-800); margin-bottom: .5rem; }
.error-item p { font-family: var(--font-ui); font-size: .84rem; color: var(--ink-50); line-height: 1.65; }
.error-item p strong { color: var(--red); }

/* ═══════════════════════════════════════════════
   CTA BAND
═══════════════════════════════════════════════ */
.cta-band {
  background: linear-gradient(155deg, var(--navy-950) 0%, var(--navy-800) 55%, var(--navy-700) 100%);
  padding: clamp(3rem, 8vw, 5rem) var(--pad-x);
  text-align: center;
  position: relative; overflow: hidden;
  border-top: 3px solid var(--bisque-deep);
}
.cta-band::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 60% 60% at 50% 110%, rgba(200,131,42,.15) 0%, transparent 70%); pointer-events: none; }
.cta-band-inner { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }
.cta-band h2 { font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.6rem); color: var(--bisque-light); margin-bottom: 12px; }
.cta-band p { font-family: var(--font-serif); font-size: 1rem; color: rgba(255,228,196,.55); line-height: 1.75; margin-bottom: 28px; }
.cta-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn-cta-primary { background: var(--bisque); color: var(--navy-900); font-family: var(--font-ui); font-weight: 700; font-size: 1rem; padding: .9rem 2.2rem; border-radius: var(--radius-pill); text-decoration: none; border: 2px solid var(--bisque-dark); transition: var(--transition); box-shadow: 0 4px 20px rgba(200,131,42,.25); }
.btn-cta-primary:hover { background: var(--bisque-light); transform: translateY(-3px); box-shadow: 0 8px 28px rgba(200,131,42,.35); }
.btn-cta-secondary { background: transparent; color: rgba(255,228,196,.75); font-family: var(--font-ui); font-weight: 600; font-size: 1rem; padding: .9rem 2.2rem; border-radius: var(--radius-pill); border: 2px solid rgba(255,228,196,.3); text-decoration: none; transition: var(--transition); }
.btn-cta-secondary:hover { background: rgba(255,228,196,.1); border-color: rgba(255,228,196,.6); color: var(--bisque); transform: translateY(-3px); }

/* ═══════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════ */
.site-footer { background: var(--navy-950); border-top: 3px solid var(--bisque-deep); padding: clamp(2.5rem, 5vw, 3.5rem) var(--pad-x) 0; margin-top: auto; }
.footer-inner { max-width: var(--max-w); margin: 0 auto; display: grid; grid-template-columns: 1.3fr 1fr 0.9fr 0.9fr; gap: clamp(1.5rem, 4vw, 3rem); padding-bottom: clamp(2rem, 4vw, 3rem); border-bottom: 1px solid rgba(255,228,196,.08); }
.footer-logo { font-family: var(--font-display); font-size: 1.2rem; font-weight: 700; color: var(--bisque-light); text-decoration: none; display: block; margin-bottom: 8px; }
.footer-logo span { color: var(--bisque-dark); }
.footer-brand p { font-family: var(--font-ui); font-size: .85rem; color: rgba(255,228,196,.35); line-height: 1.65; }
.footer-cbc-note { font-size: .76rem !important; color: rgba(255,228,196,.25) !important; margin-top: 6px; font-style: italic; }
.footer-contact-line { margin-top: 12px !important; font-size: .8rem !important; }
.footer-contact-line a { color: var(--bisque-dark) !important; text-decoration: none; font-weight: 500; transition: color var(--transition); }
.footer-contact-line a:hover { color: var(--bisque) !important; }
.footer-nav { display: contents; }
.fn-col h4 { font-family: var(--font-ui); font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,228,196,.4); margin-bottom: 12px; }
.fn-col ul { display: flex; flex-direction: column; gap: 7px; }
.fn-col a { font-family: var(--font-ui); font-size: .85rem; color: rgba(255,228,196,.4); text-decoration: none; font-weight: 400; transition: color var(--transition); }
.fn-col a:hover { color: var(--bisque-light); }
.footer-bottom { max-width: var(--max-w); margin: 0 auto; padding: 18px 0 24px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; }
.footer-bottom p { font-family: var(--font-ui); font-size: .78rem; color: rgba(255,228,196,.2); line-height: 1.6; }
.footer-mission { font-style: italic; }

/* ═══════════════════════════════════════════════
   ANIMATIONS
═══════════════════════════════════════════════ */
@keyframes fadeUp { from { opacity:0; transform:translateY(14px); } to { opacity:1; transform:translateY(0); } }

/* ═══════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; }
  .hero-formula-card { display: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .page-layout { grid-template-columns: 200px 1fr; }
}

@media (max-width: 820px) {
  .nav-mobile-bar { display: flex; }
  .nav-list { display: none; flex-direction: column; width: 100%; padding: .5rem 0 1rem; border-top: 1px solid rgba(255,228,196,.08); gap: 0; }
  .nav-list.open { display: flex; }
  .nav-list > li > a { padding: .7rem .5rem; justify-content: space-between; font-size: .92rem; }
  .nav-list > li > a::after { display: none; }
  .nav-dropdown { position: static; box-shadow: none; border: none; background: rgba(255,228,196,.04); border-radius: var(--radius-sm); padding: .25rem .5rem; margin: 0 0 .25rem .5rem; animation: none; }
  .nav-has-dropdown:hover .nav-dropdown, .nav-has-dropdown:focus-within .nav-dropdown { display: none; }
  .nav-has-dropdown.open .nav-dropdown { display: block; }
  .nav-dropdown li a { font-size: .88rem; padding: .5rem .8rem; }
  .page-layout { grid-template-columns: 1fr; padding: 1.5rem var(--pad-x) 3rem; }
  .practice-sidebar { position: static; }
  .sidebar-panel { display: none; }
  .pqn-inner { overflow-x: auto; -webkit-overflow-scrolling: touch; flex-wrap: nowrap; }
}

@media (max-width: 768px) {
  .hero h1 { font-size: 1.9rem; }
  .hero-tool-btns { flex-direction: column; align-items: stretch; }
  .htb { justify-content: center; }
  .cbc-band-title { display: none; }
  .mwalimu-banner-inner { flex-direction: column; }
  .mwalimu-banner-action { width: 100%; }
  .btn-mwalimu { width: 100%; justify-content: center; }
  .cta-btns { flex-direction: column; align-items: center; }
  .btn-cta-primary, .btn-cta-secondary { width: 100%; max-width: 320px; text-align: center; justify-content: center; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .generator-controls { flex-direction: column; align-items: stretch; }
  .btn-generate { justify-content: center; }
  .topics-grid { grid-template-columns: 1fr; }
  .samples-grid { grid-template-columns: 1fr; }
  .errors-grid { grid-template-columns: 1fr; }
  .pc-summary { padding: .9rem 1rem; }
  .pc-summary-title { font-size: .95rem; }
  .pc-summary-count { display: none; }
}

@media (max-width: 600px) {
  #practice-generator .generator-controls { flex-direction: column; }
  #generateTaskBtn { width: 100%; justify-content: center; }
  .quick-topic-pills { gap: 5px; }
}

@media (max-width: 480px) {
  .site-header { padding: 18px var(--pad-x); }
  .header-inner { flex-direction: column; align-items: flex-start; gap: 8px; }
  .welcome-pill { font-size: .74rem; }
  .answer-input-wrap { flex-direction: column; }
  .btn-check { width: 100%; justify-content: center; }
  .pqn-label { display: none; }
}

/* ═══════════════════════════════════════════════
   ACCESSIBILITY
═══════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .practice-quick-nav { transition: none; }
}

/* ═══════════════════════════════════════════════
   PRINT
═══════════════════════════════════════════════ */
@media print {
  .main-nav, .cta-band, .site-footer, .cbc-band, .practice-sidebar, .practice-quick-nav { display: none; }
  body { background: white; }
  .hero { background: #0a1628 !important; }
  .page-layout { grid-template-columns: 1fr; }
  .practice-collapsible { break-inside: avoid; }
}