/* First Global Education — shared site styles (premium pass, 2026-05-12). $0: system fonts only, no external assets. */
:root {
  color-scheme: light;
  --brand:       #1B3A8A;
  --brand-2:     #2B4FB0;   /* lighter navy for gradients */
  --brand-dark:  #0E1F4D;
  --brand-deep:  #081535;   /* near-black navy */
  --accent:      #FFB300;
  --accent-2:    #FFCB52;
  --ink:         #232735;
  --ink-soft:    #3a4256;
  --muted:       #6b7280;
  --line:        #e7eaf1;
  --bg:          #f5f6fb;
  --bg-tint:     #eef1fa;
  --card:        #ffffff;
  --radius:      18px;
  --radius-lg:   24px;
  --shadow-sm:   0 1px 3px rgba(14,31,77,.06), 0 6px 18px rgba(14,31,77,.05);
  --shadow-md:   0 4px 12px rgba(14,31,77,.08), 0 18px 44px rgba(14,31,77,.10);
  --maxw:        1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: var(--brand); text-underline-offset: 2px; }
img, svg { max-width: 100%; }
h1, h2, h3 { text-wrap: balance; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.muted { color: var(--muted); }
.center { text-align: center; }

/* ============ header ============ */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(8,21,53,.82);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  color: #fff;
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; padding: 14px 22px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 800; letter-spacing: .2px; color: #fff; text-decoration: none; font-size: 1.02rem; }
.brand .crest {
  width: 34px; height: 34px; border-radius: 11px;
  background: linear-gradient(140deg, var(--accent), #ff9d2e);
  display: grid; place-items: center; font-size: 17px;
  box-shadow: 0 4px 14px rgba(255,179,0,.35);
}
.nav { display: flex; align-items: center; gap: 4px; }
.nav a { color: rgba(255,255,255,.82); text-decoration: none; padding: 8px 13px; border-radius: 999px; font-size: .92rem; font-weight: 600; transition: background .15s, color .15s; }
.nav a:hover { color: #fff; background: rgba(255,255,255,.10); }
.nav a.cta { background: var(--accent); color: var(--brand-dark); font-weight: 800; }
.nav a.cta:hover { background: var(--accent-2); }
@media (max-width: 680px) { .nav a:not(.cta) { display: none; } }

/* ============ hero ============ */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(900px 480px at 78% -10%, rgba(255,179,0,.22), transparent 60%),
    radial-gradient(700px 520px at 12% 110%, rgba(43,79,176,.55), transparent 60%),
    linear-gradient(165deg, var(--brand-deep) 0%, var(--brand-dark) 45%, #122a63 100%);
  padding: clamp(48px, 8vw, 96px) 0 clamp(56px, 9vw, 104px);
}
.hero::before {  /* faint dot grid */
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.07) 1px, transparent 1.2px);
  background-size: 24px 24px; mask-image: linear-gradient(to bottom, #000, transparent 70%);
  pointer-events: none;
}
.hero .wrap { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(24px, 4vw, 56px); align-items: center; }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } .hero-art { order: -1; max-width: 320px; margin: 0 auto 6px; } }
.tagline { color: var(--accent-2); font-weight: 800; letter-spacing: 3px; text-transform: uppercase; font-size: .72rem; margin-bottom: 14px; }
.tagline .dot { opacity: .5; margin: 0 6px; }
.hero h1 { font-size: clamp(2rem, 5.4vw, 3.4rem); line-height: 1.08; letter-spacing: -.02em; margin: 0 0 16px; font-weight: 800; }
.hero h1 .accent { color: var(--accent-2); }
.hero p.lead { font-size: clamp(1.02rem, 2vw, 1.18rem); color: rgba(255,255,255,.86); max-width: 640px; margin: 0 0 26px; }
.hero .fineprint { color: rgba(255,255,255,.6); margin-top: 16px; font-size: .86rem; }
.hero-art { position: relative; }
.hero-art svg { width: 100%; height: auto; filter: drop-shadow(0 24px 50px rgba(0,0,0,.35)); }

/* ============ buttons ============ */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 22px; border-radius: 999px; font-weight: 800; font-size: .98rem;
  text-decoration: none; border: 0; cursor: pointer; line-height: 1;
  transition: transform .14s ease, box-shadow .14s ease, background .14s, color .14s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: linear-gradient(135deg, var(--accent), #ff9d2e); color: var(--brand-dark); box-shadow: 0 8px 24px rgba(255,179,0,.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(255,179,0,.42); }
.btn-ghost { background: rgba(255,255,255,.13); color: #fff; border: 1px solid rgba(255,255,255,.20); backdrop-filter: blur(4px); }
.btn-ghost:hover { background: rgba(255,255,255,.20); transform: translateY(-2px); }
.btn-outline { background: #fff; color: var(--brand); border: 1.5px solid var(--brand); }
.btn-outline:hover { background: var(--brand); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-row { display: flex; flex-wrap: wrap; gap: 13px; }

/* ============ stat band ============ */
.statband { background: var(--brand-deep); color: #fff; padding: 0; }
.statband .wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.07); border-radius: 0; }
.statband .stat { background: var(--brand-deep); padding: 22px 18px; text-align: center; }
.statband .stat b { display: block; font-size: clamp(1.3rem, 2.4vw, 1.7rem); color: var(--accent-2); letter-spacing: -.01em; }
.statband .stat span { font-size: .82rem; color: rgba(255,255,255,.72); }
@media (max-width: 680px) { .statband .wrap { grid-template-columns: repeat(2, 1fr); } }

/* ============ sections ============ */
section { padding: clamp(48px, 7vw, 84px) 0; }
section.tinted { background: var(--bg-tint); }
section.white { background: #fff; }
.kicker { display: inline-block; font-size: .72rem; font-weight: 800; letter-spacing: 2.5px; text-transform: uppercase; color: var(--brand); background: rgba(27,58,138,.08); padding: 5px 12px; border-radius: 999px; margin-bottom: 14px; }
section h2 { color: var(--brand-dark); font-size: clamp(1.5rem, 3.2vw, 2.1rem); line-height: 1.15; letter-spacing: -.015em; margin: 0 0 8px; font-weight: 800; }
section .sub { color: var(--muted); margin: 0 0 30px; font-size: 1.02rem; max-width: 640px; }
.section-head { margin-bottom: 8px; }

/* ============ cards / grid ============ */
.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(248px, 1fr)); }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(27,58,138,.18); }
.card .ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; font-size: 22px; background: linear-gradient(140deg, rgba(27,58,138,.10), rgba(255,179,0,.14)); margin-bottom: 14px; }
.card h3 { color: var(--brand-dark); margin: 0 0 7px; font-size: 1.12rem; font-weight: 800; letter-spacing: -.01em; }
.card p { color: var(--ink-soft); margin: 0; font-size: .96rem; }
.card .link { display: inline-flex; align-items: center; gap: 5px; margin-top: 14px; font-weight: 700; color: var(--brand); text-decoration: none; font-size: .92rem; }
.card .link:hover { gap: 9px; }

/* pills / badges */
.pill { display: inline-block; font-size: .68rem; font-weight: 800; letter-spacing: 1.2px; text-transform: uppercase; padding: 4px 11px; border-radius: 999px; background: rgba(27,58,138,.10); color: var(--brand); margin-bottom: 12px; }
.pill.soon { background: rgba(154,162,182,.18); color: #6b7280; }
.pill.ready { background: #e6f6ec; color: #157a3a; }

/* ============ "how it works" — connected steps ============ */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; position: relative; }
.steps::before { content: ""; position: absolute; left: 9%; right: 9%; top: 30px; height: 2px; background: repeating-linear-gradient(90deg, rgba(27,58,138,.25) 0 8px, transparent 8px 16px); z-index: 0; }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } .steps::before { display: none; } }
.step-item { position: relative; z-index: 1; text-align: center; padding: 0 6px; }
.step-item .num { counter-increment: step; width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 16px; background: linear-gradient(140deg, var(--brand), var(--brand-2)); color: #fff; display: grid; place-items: center; font-weight: 800; font-size: 1.3rem; box-shadow: 0 8px 22px rgba(27,58,138,.30); }
.step-item .num::before { content: counter(step); }
.step-item h3 { color: var(--brand-dark); font-size: 1.05rem; margin: 0 0 6px; font-weight: 800; }
.step-item p { color: var(--ink-soft); font-size: .92rem; margin: 0; }
@media (max-width: 760px) { .step-item { text-align: left; display: grid; grid-template-columns: 56px 1fr; gap: 16px; align-items: start; } .step-item .num { margin: 0; } }

/* ============ reveal-on-scroll ============ */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s cubic-bezier(.16,1,.3,1), transform .6s cubic-bezier(.16,1,.3,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .07s; }
.reveal[data-d="2"] { transition-delay: .14s; }
.reveal[data-d="3"] { transition-delay: .21s; }
.reveal[data-d="4"] { transition-delay: .28s; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } .hero-art .spin, .hero-art .float, .hero-art .dash { animation: none !important; } }

/* ============ hero art animations ============ */
.hero-art .spin  { transform-origin: center; animation: spin 26s linear infinite; }
.hero-art .spin.rev { animation: spin 34s linear infinite reverse; }
.hero-art .float { animation: floaty 6s ease-in-out infinite; transform-origin: center; }
.hero-art .dash  { stroke-dasharray: 1; stroke-dashoffset: 1; animation: draw 1.6s ease-out .25s forwards; }
.hero-art .twinkle { animation: tw 3.4s ease-in-out infinite; }
.hero-art .twinkle.b { animation-delay: 1.1s; }
.hero-art .twinkle.c { animation-delay: 2.2s; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes tw { 0%,100% { opacity: .25; } 50% { opacity: 1; } }

/* ============ CTA strip ============ */
.cta-strip { background: linear-gradient(135deg, var(--brand-dark), var(--brand)); color: #fff; border-radius: var(--radius-lg); padding: clamp(28px, 4vw, 44px); text-align: center; box-shadow: var(--shadow-md); }
.cta-strip h2 { color: #fff; }
.cta-strip .sub { color: rgba(255,255,255,.8); margin-left: auto; margin-right: auto; }
.cta-strip .btn-row { justify-content: center; }

/* ============ course catalogue (learn.html) ============ */
.track-list { list-style: none; padding: 0; margin: 14px 0 0; }
.track-list li { padding: 9px 0; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .92rem; }
.track-list li:first-child { border-top: 0; }
.meta-line { color: var(--muted); font-size: .85rem; margin: 5px 0 0; }
details.lesson { border-top: 1px solid var(--line); padding: 9px 0; }
details.lesson summary { cursor: pointer; color: var(--brand-dark); font-weight: 700; font-size: .92rem; list-style: none; }
details.lesson summary::-webkit-details-marker { display: none; }
details.lesson summary::before { content: "▸ "; color: var(--brand); }
details.lesson[open] summary::before { content: "▾ "; }
details.lesson .body { color: var(--ink-soft); font-size: .9rem; padding: 8px 0 2px 18px; }

/* ============ lesson preview (lesson.html) ============ */
.intro-card { background: linear-gradient(135deg, #fff, #f3f6ff); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow-sm); margin-bottom: 20px; }
.intro-card .who { font-size: .74rem; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; color: var(--brand); margin-bottom: 6px; }
.intro-card p { color: var(--ink); font-size: 1.02rem; font-style: italic; margin: 0; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow-sm); margin-bottom: 16px; }
.step.proof { border-left: 4px solid var(--brand); background: linear-gradient(135deg, #fff, #f4f7ff); }
.step .kind { font-size: .72rem; font-weight: 800; letter-spacing: 1.4px; text-transform: uppercase; color: var(--brand); margin-bottom: 8px; }
.step h3 { color: var(--brand-dark); margin: 0 0 8px; font-size: 1.06rem; }
.step p { color: var(--ink-soft); margin: 8px 0; font-size: .96rem; }
.step ul, .step ol { color: var(--ink-soft); font-size: .94rem; margin: 8px 0; padding-left: 22px; }
.quote { background: var(--bg-tint); border-radius: 12px; padding: 12px 15px; color: var(--ink); font-size: .96rem; margin: 8px 0; }
.ans { background: #e6f6ec; border-radius: 10px; padding: 8px 12px; color: #157a3a; font-size: .9rem; font-weight: 600; }

/* ============ footer ============ */
.site-footer { background: var(--brand-deep); color: rgba(255,255,255,.72); padding: clamp(40px, 6vw, 64px) 0 28px; font-size: .92rem; margin-top: 0; }
.site-footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 28px; padding-bottom: 26px; border-bottom: 1px solid rgba(255,255,255,.10); }
@media (max-width: 680px) { .site-footer .cols { grid-template-columns: 1fr; gap: 22px; } }
.site-footer h4 { color: #fff; font-size: .82rem; letter-spacing: 1.5px; text-transform: uppercase; margin: 0 0 12px; }
.site-footer .fbrand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; font-size: 1.05rem; margin-bottom: 10px; }
.site-footer .fbrand .crest { width: 30px; height: 30px; border-radius: 9px; background: linear-gradient(140deg, var(--accent), #ff9d2e); display: grid; place-items: center; font-size: 15px; }
.site-footer a { color: #c7d2ec; text-decoration: none; display: block; padding: 3px 0; }
.site-footer a:hover { color: #fff; }
.site-footer .legal { padding-top: 18px; display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; color: rgba(255,255,255,.5); font-size: .84rem; }

/* ============ install banner ============ */
#install-banner { display: none; background: linear-gradient(135deg, var(--accent), #ff9d2e); color: var(--brand-dark); }
#install-banner.show { display: block; }
#install-banner .wrap { display: flex; align-items: center; justify-content: space-between; padding: 11px 22px; gap: 12px; flex-wrap: wrap; }
#install-banner span { font-weight: 700; font-size: .93rem; }
#install-banner button { background: var(--brand-dark); color: #fff; border: 0; border-radius: 999px; padding: 8px 18px; font-weight: 800; cursor: pointer; }
#install-banner button:hover { background: var(--brand-deep); }

/* ============ misc / inner pages ============ */
.page-hero { background: linear-gradient(165deg, var(--brand-dark), var(--brand)); color: #fff; padding: clamp(36px, 6vw, 60px) 0 clamp(28px, 4vw, 40px); }
.page-hero h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin: 0 0 8px; letter-spacing: -.02em; }
.page-hero p { color: rgba(255,255,255,.82); margin: 0; max-width: 640px; }
.page-hero .crumb { font-size: .85rem; color: rgba(255,255,255,.7); margin-bottom: 10px; }
.page-hero .crumb a { color: var(--accent-2); text-decoration: none; }
.note { background: #fff; border-left: 4px solid var(--accent); padding: 14px 16px; border-radius: 10px; color: var(--ink-soft); font-size: .92rem; box-shadow: var(--shadow-sm); }

/* ============ in-browser lesson player (play.js) ============ */
.player { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); overflow: hidden; }
.player .pbar { height: 6px; background: var(--bg-tint); }
.player .pbar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--brand), var(--accent)); width: 0; transition: width .35s cubic-bezier(.16,1,.3,1); }
.player .pwho { display: flex; align-items: center; gap: 12px; padding: 14px 22px; background: linear-gradient(135deg, var(--brand-dark), var(--brand)); color: #fff; }
.player .pwho .av { width: 38px; height: 38px; border-radius: 11px; background: rgba(255,255,255,.16); display: grid; place-items: center; font-size: 19px; flex: none; }
.player .pwho .meta b { display: block; font-size: .95rem; }
.player .pwho .meta span { font-size: .8rem; opacity: .78; }
.player .pbody { padding: clamp(20px, 4vw, 32px); min-height: 200px; }
.player .pintro { font-size: 1.06rem; color: var(--ink); line-height: 1.65; }
.player .pinstr { font-weight: 700; color: var(--brand-dark); font-size: 1.06rem; margin: 0 0 14px; }
.player .ptext { background: var(--bg-tint); border-radius: 14px; padding: 18px 20px; font-size: 1.12rem; line-height: 1.75; color: var(--ink); }
.player .ptext .w { transition: background .15s, color .15s; border-radius: 4px; padding: 0 1px; }
.player .ptext .w.on { background: var(--accent); color: var(--brand-dark); }
.player .opts { display: grid; gap: 10px; margin-top: 4px; }
.player .opt { text-align: left; padding: 14px 18px; border-radius: 14px; border: 1.5px solid var(--line); background: #fff; font-size: 1.02rem; color: var(--ink); cursor: pointer; transition: border-color .15s, background .15s, transform .1s; font-family: inherit; }
.player .opt:hover { border-color: var(--brand); background: #f7f9ff; }
.player .opt:active { transform: scale(.99); }
.player .opt.right { border-color: #1f9d55; background: #e9f8ef; color: #137a3a; font-weight: 700; }
.player .opt.wrong { border-color: #d9534f; background: #fdeeee; color: #b23b38; }
.player .opt[disabled] { cursor: default; opacity: .9; }
.player textarea.pinput { width: 100%; min-height: 160px; border: 1.5px solid var(--line); border-radius: 14px; padding: 14px 16px; font-family: inherit; font-size: 1rem; line-height: 1.6; color: var(--ink); resize: vertical; }
.player textarea.pinput:focus { outline: none; border-color: var(--brand); }
.player input.pshort { width: 100%; border: 1.5px solid var(--line); border-radius: 12px; padding: 11px 14px; font-family: inherit; font-size: 1rem; color: var(--ink); }
.player input.pshort:focus { outline: none; border-color: var(--brand); }
.player .pfeed { margin-top: 14px; padding: 13px 16px; border-radius: 12px; font-size: .96rem; }
.player .pfeed.ok { background: #e9f8ef; color: #137a3a; }
.player .pfeed.no { background: #fff4e6; color: #8a5a00; }
.player .pcheck { margin-top: 8px; font-size: .92rem; color: var(--ink-soft); }
.player .pcheck li { margin: 3px 0; }
.player .pcheck li.met { color: #137a3a; }
.player .pactions { display: flex; flex-wrap: wrap; gap: 10px; padding: 16px 22px 22px; }
.player .pkind { font-size: .7rem; font-weight: 800; letter-spacing: 1.6px; text-transform: uppercase; color: var(--brand); margin-bottom: 8px; }
.player .pkind.proof { color: var(--accent); }
.player .pscenario { background: #f4f7ff; border-left: 3px solid var(--brand); border-radius: 10px; padding: 12px 15px; color: var(--ink); font-size: .98rem; margin: 0 0 16px; }
.player .pdone { text-align: center; padding: 14px 4px; }
.player .pdone .big { font-size: 2.6rem; line-height: 1; }
.player .pdone h3 { color: var(--brand-dark); font-size: 1.4rem; margin: 12px 0 4px; }
.player .pdone .score { display: inline-block; background: var(--bg-tint); border-radius: 999px; padding: 6px 16px; font-weight: 800; color: var(--brand); margin: 8px 0 14px; }
.player .pdone p { color: var(--ink-soft); max-width: 460px; margin: 0 auto 16px; }
.player .pnote { padding: 14px 22px 22px; color: var(--muted); font-size: .85rem; }
@keyframes pop { 0% { transform: scale(.6); opacity: 0; } 60% { transform: scale(1.12); } 100% { transform: scale(1); opacity: 1; } }
.player .pop { animation: pop .4s cubic-bezier(.16,1,.3,1); }