/* Learn Tamil — Static and guide pages, FAQ, footer, PWA install, disclaimer, coffee link.
   Order matters: files load in number order (see tools/lib/assets.mjs). */
/* =====================================================================
   STATIC PAGES (alphabet chart, privacy, terms), FAQ, FOOTER
   ===================================================================== */
.doc{max-width:900px;padding-top:20px;padding-bottom:40px}
.doc h1{font-family:var(--font-kid);font-size:clamp(28px,5vw,42px);line-height:1.25;margin:10px 0 6px}
.doc h2{font-family:var(--font-kid);font-size:clamp(21px,3.4vw,27px);line-height:1.3;margin:34px 0 10px;scroll-margin-top:80px}
.doc p,.doc li{font-size:17px;line-height:1.7}
.doc a{color:var(--accent-deep);font-weight:600}
.doc code{background:var(--bg-subtle);border-radius:6px;padding:1px 6px;font-size:.9em}
.doc .callout{margin:18px 0}
.crumbs{font-size:14px;color:var(--text-muted);margin-bottom:12px}
.crumbs a{color:var(--text-muted)}
.doc-meta{color:var(--text-muted);font-size:14px;margin:0 0 18px}
.lead-doc{font-size:19px!important}
.sum-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:20px 0}
.sum-grid>div{padding:12px 6px;text-align:center;display:flex;flex-direction:column;border-radius:16px}
.sum-grid b{font-size:26px;font-family:var(--font-kid)}
.sum-grid span{font-weight:700}
.sum-grid small{color:var(--text-muted);font-size:12px}
.sum-grid .total{background:linear-gradient(135deg,#ff8a3d,#ff5e7e 50%,#7c5cff);color:#fff}
.sum-grid .total small{color:#fff}
.toc{display:flex;flex-wrap:wrap;gap:6px 14px;padding:12px 16px;font-size:15px;margin:10px 0 6px}
.toc a{color:var(--accent-deep);font-weight:600}
.tbl{overflow-x:auto;margin:12px 0;border-radius:16px;border:1px solid var(--border);background:var(--glass)}
.tbl table{border-collapse:collapse;width:100%;font-size:15px}
.tbl th,.tbl td{padding:9px 12px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
.tbl th{background:var(--bg-subtle);font-weight:700}
.tbl td.L{font-family:var(--font-kid);font-size:30px;font-weight:800;color:var(--c-uyir);line-height:1.2}
.um-static table{width:auto;min-width:100%}
.um-static td,.um-static th{text-align:center;padding:6px 8px}
.um-static td .ta{display:block;font-family:var(--font-kid);font-size:22px;font-weight:700;color:var(--c-um);white-space:nowrap}
.um-static td small{color:var(--text-muted);font-size:11px}
.um-static tbody th{font-family:var(--font-kid);font-size:20px;color:var(--c-mei);position:sticky;left:0;background:var(--bg-subtle)}
.big-inline{font-size:1.6em;font-weight:800;color:var(--c-ay)}
.word-list{columns:3 200px;padding-left:18px}
.word-list li{break-inside:avoid}
.doc-note{color:var(--text-muted);font-size:15px!important;margin-top:24px}

.faq-sec{padding-top:10px;padding-bottom:30px}
.faq-sec h2{font-family:var(--font-kid);font-size:clamp(21px,3.4vw,27px);margin:20px 0 4px}
.faq-sec .muted a{color:var(--accent-deep);font-weight:600}
.faq{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.faq-item{background:var(--glass);border:1px solid var(--glass-line);box-shadow:var(--glass-shadow);border-radius:14px;padding:0 16px}
.faq-item summary{cursor:pointer;font-weight:700;padding:14px 26px 14px 0;list-style:none;position:relative;font-size:16px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:0;top:10px;font-size:22px;color:var(--accent);transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{margin:0 0 14px;line-height:1.7;color:var(--text-muted)}

footer .foot{display:grid;grid-template-columns:1.4fr 1fr;gap:14px 30px;align-items:start}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:flex-end}
.foot>div:last-child{grid-column:1/-1}
@media (max-width:760px){
  footer .foot{grid-template-columns:1fr;text-align:left}
  .foot-links{justify-content:flex-start}
  .sum-grid{grid-template-columns:repeat(5,1fr);gap:6px}
  .sum-grid b{font-size:19px}
  .sum-grid small{display:none}
  .doc p,.doc li{font-size:16px}
  .doc-page{padding-bottom:20px}
  .doc-page .site-header .btn{font-size:13px;padding:6px 10px}
}
.site-header a.btn,.foot-links a,footer a{text-decoration:none}
.foot-links a:hover,footer a:hover{text-decoration:underline}
@media (max-width:760px){.hide-sm{display:none}}
.feedback-link{text-align:center;margin:10px 0 0;font-size:14px}
.feedback-link a{color:var(--accent-deep);font-weight:600;text-decoration:none}
.feedback-link a:hover{text-decoration:underline}

/* =====================================================================
   PWA: install button, toast, installed-app tweaks
   ===================================================================== */
.install-btn{display:inline-flex;align-items:center;gap:6px;border:0;border-radius:999px;padding:8px 14px;background:linear-gradient(135deg,#1769d1,#7c3aed);color:#fff;font-weight:700;font-size:14px;cursor:pointer;margin-right:8px;box-shadow:0 6px 16px -6px rgb(23 105 209 / .6);animation:pop .4s ease}
.install-btn:hover{transform:translateY(-1px)}
.toast{position:fixed;left:50%;bottom:20px;transform:translate(-50%,140%);z-index:60;display:flex;align-items:center;gap:10px;flex-wrap:wrap;max-width:min(560px,calc(100vw - 24px));background:var(--text);color:var(--bg);border-radius:16px;padding:12px 14px;box-shadow:0 18px 40px -12px rgb(0 0 0 / .45);transition:transform .35s cubic-bezier(.3,1.4,.5,1);font-size:15px}
.toast.show{transform:translate(-50%,0)}
.toast-msg{flex:1;min-width:200px;line-height:1.45}
.toast-btn{border:0;border-radius:10px;padding:8px 14px;font-weight:700;cursor:pointer;background:rgb(255 255 255 / .15);color:inherit}
.toast-btn.primary{background:var(--accent);color:var(--on-accent)}
@media (max-width:760px){
  .install-btn span:last-child{display:none}
  .install-btn{padding:8px 11px;margin-right:6px}
  .toast{bottom:calc(84px + env(safe-area-inset-bottom))}
  .doc-page .toast{bottom:16px}
}
/* installed app: respect notches / home bar */
@media (display-mode: standalone){
  .site-header{padding-top:env(safe-area-inset-top)}
  .tabs{top:calc(56px + env(safe-area-inset-top))}
}

/* Disclaimer */
.disclaimer{display:flex;gap:12px;align-items:flex-start;max-width:760px;margin:16px auto 0;padding:12px 16px;border-radius:14px;background:color-mix(in srgb,#f2a900 10%,var(--glass));border:1px solid color-mix(in srgb,#f2a900 45%,transparent);font-size:14px;line-height:1.6}
.disclaimer p{margin:0}
.disclaimer a{color:var(--accent-deep);font-weight:700}
.disc-ic{font-size:20px;line-height:1.3}
.disclaimer .ta{display:inline-block;margin-top:4px;color:var(--text-muted)}
.foot-disc{grid-column:1/-1;margin:0;font-size:13px;color:var(--text-muted);border-top:1px solid var(--border);padding-top:12px}
.foot-disc a{color:var(--accent-deep);font-weight:600}

/* =====================================================================
   KID-FRIENDLY GUIDE PAGES
   ===================================================================== */
.doc-hero{position:relative;overflow:hidden;margin:6px 0 22px;padding:22px 24px 20px;border-radius:28px;
  background:radial-gradient(260px 260px at 0% 0%,rgb(23 105 209 / .16),transparent 70%),radial-gradient(260px 260px at 100% 0%,rgb(255 205 86 / .35),transparent 70%),radial-gradient(260px 260px at 100% 100%,rgb(255 138 101 / .2),transparent 70%),var(--glass);
  border:1px solid var(--glass-line);box-shadow:var(--glass-shadow)}
.doc-hero .floaters span{opacity:.1}
.doc-hero-in{position:relative;z-index:1;display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center}
.doc-hero h1{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent;margin:8px 0 6px}
.doc-mascot{display:flex;flex-direction:column;align-items:center;gap:6px}
.doc-mascot .bird{font-size:78px;line-height:1;animation:bob 2.6s ease-in-out infinite;filter:drop-shadow(0 10px 12px rgb(0 60 120 / .22))}
.doc-mascot .bubble{font-size:15px;max-width:170px}
.doc h2{display:flex;align-items:center;gap:12px}
.h-ic{flex:none;width:44px;height:44px;border-radius:14px;display:grid;place-items:center;font-size:22px;background:linear-gradient(135deg,color-mix(in srgb,var(--c-uyir) 18%,transparent),color-mix(in srgb,var(--c-ay) 18%,transparent));box-shadow:0 4px 0 color-mix(in srgb,var(--c-uyir) 22%,transparent)}
.doc h3{font-family:var(--font-kid);font-size:20px;margin:22px 0 8px}

/* letter cards */
.lcards{display:grid;grid-template-columns:repeat(auto-fill,minmax(138px,1fr));gap:12px;margin:12px 0 6px}
.lcard{--fam:var(--c-uyir);display:flex;flex-direction:column;align-items:center;gap:2px;padding:14px 8px 12px;border-radius:22px;text-align:center;
  background:color-mix(in srgb,var(--fam) 9%,var(--glass));border:1px solid var(--glass-line);box-shadow:0 5px 0 color-mix(in srgb,var(--fam) 28%,transparent),var(--glass-shadow);transition:transform .15s}
.lcard:hover{transform:translateY(-3px) rotate(-1.5deg)}
.lc-l{font-family:var(--font-kid);font-size:52px;font-weight:800;line-height:1.2;color:var(--fam)}
.lc-r{font-weight:700;color:var(--text-muted)}
.lc-b{font-size:12px;font-weight:700;border-radius:999px;padding:2px 10px;margin:2px 0}
.lc-b.short{background:color-mix(in srgb,var(--c-mei) 16%,transparent);color:var(--c-mei)}
.lc-b.long{background:color-mix(in srgb,var(--c-um) 16%,transparent);color:var(--c-um)}
.lc-e{font-size:34px;line-height:1.2;margin-top:4px}
.lc-w{font-family:var(--font-kid);font-weight:700;font-size:19px}
.lc-m{font-size:13px;color:var(--text-muted)}

/* word cards */
.wcards{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin:12px 0}
.wcard{display:flex;flex-direction:column;align-items:center;gap:2px;padding:14px 8px;border-radius:22px;background:var(--glass);border:1px solid var(--glass-line);box-shadow:0 5px 0 color-mix(in srgb,var(--c-um) 25%,transparent),var(--glass-shadow);text-align:center;transition:transform .15s}
.wcard:hover{transform:translateY(-3px) rotate(1.5deg)}
.wc-e{font-size:46px;line-height:1.15}
.wc-w{font-family:var(--font-kid);font-weight:800;font-size:26px;color:var(--c-um)}
.wc-b{font-size:14px;color:var(--text-muted);background:var(--bg-subtle);border-radius:999px;padding:1px 10px}
.wc-m{font-size:14px;font-weight:600}

/* tips, pairs, formula, rows */
.tip{display:flex;gap:12px;align-items:flex-start;margin:16px 0;padding:12px 16px;border-radius:16px;background:color-mix(in srgb,#ffd166 22%,var(--glass));border:2px dashed color-mix(in srgb,#f2a900 55%,transparent)}
.tip>span{font-size:22px;line-height:1.4}
.tip p{margin:0!important}
.pairs{display:flex;flex-wrap:wrap;gap:10px;margin:12px 0}
.pair{display:flex;align-items:center;gap:10px;padding:10px 16px;border-radius:18px;background:var(--glass);border:1px solid var(--glass-line);box-shadow:var(--glass-shadow);font-family:var(--font-kid);font-size:34px;font-weight:800}
.pair .s{color:var(--c-mei)} .pair .l{color:var(--c-um)} .pair .arrow{font-size:20px;color:var(--text-muted)}
.formula{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px;margin:16px 0;padding:14px;border-radius:22px;background:var(--glass);border:1px solid var(--glass-line);box-shadow:var(--glass-shadow);font-family:var(--font-kid);font-weight:800;font-size:clamp(30px,6vw,44px)}
.formula .m{color:var(--c-mei)} .formula .u{color:var(--c-uyir)} .formula .r{color:var(--c-um)} .formula .op{color:var(--text-muted);font-weight:600}
.formula .sep{width:2px;height:40px;background:var(--border);margin:0 10px}
.rows{list-style:none;padding:0;display:grid;gap:6px}
.rows li{padding:8px 14px;border-radius:14px;background:var(--glass);border:1px solid var(--glass-line);font-size:18px!important}
.rows li b{color:var(--c-mei);margin-right:8px}
.doc .tbl{border-radius:20px}
.doc .tbl th{background:linear-gradient(90deg,color-mix(in srgb,var(--c-uyir) 14%,var(--bg-subtle)),color-mix(in srgb,var(--c-ay) 12%,var(--bg-subtle)))}
.doc .tbl tbody tr:nth-child(even){background:color-mix(in srgb,var(--bg-subtle) 60%,transparent)}
.sign{font-size:26px}

/* stories */
.story{padding:18px;margin:18px 0;border-radius:24px;scroll-margin-top:80px}
.st-head{display:flex;align-items:center;gap:14px;margin-bottom:8px}
.st-cover{font-size:52px;line-height:1;animation:bob 3s ease-in-out infinite}
.st-head h3{margin:0;font-size:24px}
.st-head p{margin:2px 0 0;color:var(--text-muted)}
.st-pages{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.st-pages li{display:flex;gap:12px;align-items:flex-start;padding:10px 12px;border-radius:16px;background:var(--bg-subtle)}
.st-e{font-size:30px;line-height:1.3;flex:none;width:44px;text-align:center}
.st-t{font-family:var(--font-kid);font-weight:700;font-size:20px!important;margin:0!important;line-height:1.6!important}
.st-en{margin:0!important;color:var(--text-muted);font-style:italic;font-size:15px!important}
.st-listen{display:inline-block;margin-top:12px;font-weight:700}

/* more guides */
.more-guides{margin-top:34px}
.more-guides h2{font-family:var(--font-kid);display:flex;align-items:center;gap:12px;font-size:clamp(21px,3.4vw,27px)}
.guides{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;margin:12px 0}
.guide-card{display:flex;flex-direction:column;gap:2px;padding:14px 16px;border-radius:20px;background:var(--glass);border:1px solid var(--glass-line);box-shadow:0 5px 0 color-mix(in srgb,var(--c-uyir) 20%,transparent),var(--glass-shadow);text-decoration:none!important;color:var(--text)!important;transition:transform .15s}
.guide-card:hover{transform:translateY(-3px) rotate(-1deg)}
.gc-ic{font-size:30px;line-height:1.2;font-family:var(--font-kid);font-weight:800;color:var(--c-uyir)}
.guide-card b{font-family:var(--font-kid);font-size:17px}
.guide-card .ta{color:var(--text-muted);font-size:14px}
.cta-app{display:flex;align-items:center;justify-content:center;gap:10px;margin:18px 0 6px;padding:14px 20px;border-radius:18px;background:linear-gradient(135deg,#1769d1,#7c3aed);color:#fff!important;font-weight:800;font-size:17px;text-decoration:none!important;box-shadow:0 10px 24px -10px rgb(23 105 209 / .7);transition:transform .15s}
.cta-app:hover{transform:translateY(-2px)}
.guide-link{font-weight:700;color:var(--accent-deep);white-space:nowrap;text-decoration:none}
.guide-link:hover{text-decoration:underline}
.foot-guides{grid-column:1/-1;font-size:14px;line-height:1.9;color:var(--text-muted)}
.foot-guides a{color:var(--accent-deep)}

@media (max-width:760px){
  .doc-hero{padding:16px;border-radius:22px}
  .doc-hero-in{grid-template-columns:1fr}
  .doc-mascot{flex-direction:row;justify-content:flex-start}
  .doc-mascot .bird{font-size:52px}
  .lcards{grid-template-columns:repeat(2,1fr)}
  .wcards{grid-template-columns:repeat(2,1fr)}
  .h-ic{width:38px;height:38px;font-size:19px}
  .guides{grid-template-columns:1fr 1fr}
  .formula .sep{display:none}
}

/* Buy me a coffee (plain link — no third-party script) */
.support-card{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;margin:22px 0;padding:16px 18px;border-radius:22px;
  background:radial-gradient(220px 160px at 100% 0%,rgb(255 221 0 / .28),transparent 70%),var(--glass);border:1px solid var(--glass-line);box-shadow:0 5px 0 rgb(255 196 0 / .35),var(--glass-shadow)}
.sc-ic{font-size:40px;line-height:1;animation:bob 3s ease-in-out infinite}
.support-card b{font-family:var(--font-kid);font-size:19px}
.support-card p{margin:2px 0 0;font-size:15px!important;line-height:1.55!important;color:var(--text-muted)}
.coffee-btn{display:inline-flex;align-items:center;gap:6px;white-space:nowrap;padding:12px 18px;border-radius:999px;background:#ffdd00;color:#0b1020!important;font-weight:800;text-decoration:none!important;box-shadow:0 5px 0 #d4b200;transition:transform .12s,box-shadow .12s}
.coffee-btn:hover{transform:translateY(-2px)}
.coffee-btn:active{transform:translateY(3px);box-shadow:0 1px 0 #d4b200}
.foot-links .coffee-link{background:#ffdd00;color:#0b1020!important;border-radius:999px;padding:2px 12px;font-weight:700}
@media (max-width:760px){
  .support-card{grid-template-columns:auto 1fr}
  .coffee-btn{grid-column:1/-1;justify-content:center}
}