/* ACE Grammar Engine — unified site + navigation stylesheet
   Replaces homepage inline CSS and ace_top_navigation.css.
   Light theme, readable dropdowns, responsive layouts.
*/
:root {
  color-scheme: light;
  --navy:#16365c; --ink:#18243a; --muted:#52657c;
  --line:#d7e2ee; --blue:#12538f; --bg:#f3f7fc;
  --soft:#eaf3fc; --white:#ffffff; --hover:#dcebf9;
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--bg);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:13px/1.42 system-ui,-apple-system,"Segoe UI",sans-serif}
a{color:var(--blue)}
a:focus-visible,summary:focus-visible,button:focus-visible{outline:2px solid #b46c00;outline-offset:3px}
.wrap{max-width:1240px;margin:auto;padding:0 16px}

/* ===== SHARED NAVIGATION ===== */
.ace-compact-header,.ace-compact-header *{box-sizing:border-box}
.ace-compact-header{position:relative;z-index:1000;background:var(--soft);color:var(--navy);font:13px/1.35 system-ui,-apple-system,"Segoe UI",sans-serif;border-bottom:1px solid var(--line)}
.ace-compact-header .ace-compact-inner{max-width:1240px;width:100%;margin-inline:auto;padding:7px 18px;min-height:48px;display:flex;align-items:center;gap:10px;flex-wrap:nowrap}
.ace-compact-brand{display:flex;align-items:center;gap:8px;text-decoration:none!important;color:var(--navy)!important;white-space:nowrap}
.ace-compact-logo{font-weight:800;font-size:14px;background:var(--white);color:var(--navy);padding:4px 7px;border:1px solid var(--line);border-radius:5px}
.ace-compact-brandname{font-size:13px;font-weight:700;color:var(--navy)}
.ace-compact-nav{display:flex;align-items:center;gap:3px;flex-wrap:nowrap;min-width:0}
.ace-compact-nav>a,.ace-compact-menu>summary{display:flex;align-items:center;gap:5px;padding:9px 10px;border-radius:5px;background:transparent;color:var(--navy);text-decoration:none;cursor:pointer;font:inherit;font-weight:650;white-space:nowrap;list-style:none}
.ace-compact-menu>summary::-webkit-details-marker,.ace-mobile-toggle::-webkit-details-marker{display:none}
.ace-compact-nav>a:hover,.ace-compact-menu>summary:hover,.ace-compact-menu[open]>summary,.ace-compact-nav>a.ace-compact-current,.ace-compact-menu>summary.ace-compact-current{background:var(--hover);color:var(--navy)}
.ace-compact-menu{position:relative;min-width:0}
.ace-compact-caret{font-size:11px;opacity:.8;margin-left:3px}
.ace-compact-dropdown{position:absolute;top:calc(100% + 3px);left:0;display:flex;flex-direction:column;min-width:220px;max-width:min(90vw,330px);padding:6px;background:var(--white);color:var(--navy);border:1px solid var(--line);border-radius:8px;box-shadow:0 10px 26px rgba(10,31,58,.16);z-index:1001}
.ace-compact-menu:not([open])>.ace-compact-dropdown{display:none}
.ace-compact-dropdown>a{display:block;color:var(--navy);background:var(--white);text-decoration:none;font-size:13px;font-weight:550;padding:10px 12px;border-radius:5px;white-space:normal;overflow-wrap:anywhere}
.ace-compact-dropdown>a:hover,.ace-compact-dropdown>a:focus-visible,.ace-compact-dropdown>a.ace-compact-current{background:var(--soft);color:var(--navy)}
.ace-compact-menu:last-child .ace-compact-dropdown{left:auto;right:0}
/* Support the original PHP, and the optional outer mobile <details> wrapper. */
.ace-mobile-navigation{display:flex;align-items:center;min-width:0;flex:1 1 auto}
.ace-mobile-toggle{display:none}

/* Keep the desktop menu in one line without changing dropdown colors. */
@media(min-width:761px){
  .ace-compact-brand{flex:0 0 auto}
  .ace-compact-menu{flex:0 0 auto}
  .ace-compact-nav>a{flex:0 0 auto}
}

/* ===== HOMEPAGE HERO ===== */
.hero{background:linear-gradient(120deg,#e6f1fc,#d6e9fa);color:var(--ink);padding:14px 0;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);align-items:center;gap:22px}
.hero-copy{min-width:0}
.eyebrow{text-transform:uppercase;letter-spacing:.1em;font-size:.66rem;font-weight:750;color:#365c84}
.hero h1{font-size:clamp(1.25rem,2vw,1.65rem);line-height:1.17;margin:5px 0;color:var(--navy)}
.hero p{max-width:680px;color:#354f6c;font-size:.82rem;margin:5px 0}
.actions{display:flex;flex-wrap:wrap;gap:7px;margin:7px 0}
.button{display:inline-block;text-decoration:none;border-radius:6px;padding:7px 11px;font-size:.82rem;font-weight:700;background:var(--navy);color:var(--white)}
.button.secondary{background:var(--white);color:var(--navy);border:1px solid #9bb8d5}
.verse{margin:0;padding:10px 12px;border-left:2px solid #8fb4d8;background:var(--white);border-radius:0 6px 6px 0}
.verse .arabic{font-family:"Noto Naskh Arabic","Amiri",serif;font-size:1.25rem;line-height:1.7;direction:rtl;text-align:center;color:var(--navy)}
.verse figcaption{color:#4b6078;text-align:center;font-size:.76rem}

/* ===== EXPLORE CARDS ===== */
.section-heading{margin:12px 0 8px}
.section-heading h2{font-size:1.17rem;margin:0}
.section-heading p{margin:2px 0;color:var(--muted);font-size:.82rem}
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}
.card{background:var(--white);border:1px solid var(--line);border-radius:8px;min-width:0;overflow:hidden}
.card summary{cursor:pointer;padding:8px 10px;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:8px;color:var(--ink)}
.card summary::-webkit-details-marker{display:none}
.card summary::after{content:'+';font-size:1.1rem;color:var(--blue)}
.card[open] summary::after{content:'−'}
.card summary:hover{background:var(--soft)}
.card .tag{font-size:.66rem;text-transform:uppercase;letter-spacing:.07em;color:#416c9b;font-weight:800}
.card h3{font-size:.95rem;line-height:1.25;margin:2px 0 0}
.card-body{border-top:1px solid var(--line);padding:7px 10px;background:var(--white)}
.card p{color:var(--muted);margin:0 0 9px;font-size:.8rem}
.links{display:flex;flex-wrap:wrap;gap:6px}
.links a{background:var(--soft);color:var(--navy);border:1px solid #cbdff2;border-radius:5px;padding:5px 8px;font-size:.78rem;text-decoration:none;font-weight:650}
.links a:hover{background:var(--hover);text-decoration:underline}

/* ===== LOWER PANELS ===== */
.bottom-panels{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;margin:8px 0}
.bottom-panel{min-width:0;background:var(--white);border:1px solid var(--line);border-radius:8px;overflow:hidden}
.bottom-panel>summary{display:flex;align-items:center;justify-content:space-between;gap:8px;cursor:pointer;list-style:none;padding:9px 11px;font-size:.84rem;font-weight:750;line-height:1.3}
.bottom-panel>summary::-webkit-details-marker{display:none}
.bottom-panel>summary::after{content:'+';color:var(--blue);font-size:1.1rem;font-weight:700;flex:none}
.bottom-panel[open]>summary::after{content:'−'}
.bottom-panel>summary:hover{background:var(--soft)}
.bottom-panel-body{border-top:1px solid var(--line);padding:8px 11px;background:var(--white)}
.bottom-panel-body p{font-size:.8rem;color:var(--muted);margin:0 0 8px}
.bottom-panel-body p:last-child{margin-bottom:0}
.bottom-panel-body .links{margin-top:6px}
.example{direction:rtl;text-align:center;font:1.2rem/1.7 "Noto Naskh Arabic","Amiri",serif;background:#f4f8fd;padding:6px;border-radius:6px}

/* ===== FEATURED FLASHCARD ===== */
.featured{margin:12px 0 2px;background:var(--white);border:1px solid var(--line);border-radius:10px;padding:12px 14px;display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.8fr);align-items:center;gap:14px}
.featured h2{margin:0 0 3px;font-size:1.08rem}
.featured p{margin:3px 0;color:var(--muted);font-size:.82rem}
.featured .meta{font-size:.76rem;color:var(--muted);font-weight:700}
.featured .featured-actions{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}
.featured .featured-actions a,.featured .featured-actions button{border-radius:6px;padding:7px 10px;text-decoration:none;font-weight:700;font-size:.8rem;background:var(--blue);color:var(--white);border:0;cursor:pointer}
.featured .featured-actions .minor{background:var(--soft);color:var(--navy);border:1px solid #cbdff2}
.featured .featured-actions .audio{background:#16744c}
.featured-card{background:var(--white);border:1px solid #d8dfe9;border-radius:14px;padding:12px;text-align:center;box-shadow:0 5px 15px #1e304b12}
.featured-ref{font-size:.92rem;font-weight:700;color:#365778}
.featured-counter{font-size:.8rem;color:#66758b}
.featured-word{display:flex;justify-content:center;align-items:center;gap:10px;flex-wrap:wrap;direction:rtl;margin:4px 0}
.featured-word .arabic{font:clamp(2.3rem,5vw,3.8rem)/1.55 "Amiri","Noto Naskh Arabic",serif;color:#122b55;text-decoration:none}
.featured-freq{font:600 .8rem system-ui,sans-serif;color:#365778;background:#eef4fc;border:1px solid #d4e2f1;border-radius:99px;padding:5px 8px;text-decoration:none;direction:ltr}
.featured-speaker{border:1px solid #b8cbe2;border-radius:50%;width:40px;height:40px;background:#eaf2ff;color:#1c4d85;cursor:pointer;font-size:1.15rem}
.featured-ipa{font-size:1rem;color:#365778;margin:3px 0 8px}
.featured-tools{display:flex;justify-content:center;gap:7px;flex-wrap:wrap}
.featured-tools a{padding:5px 10px;border:1px solid #c7d5e6;border-radius:9px;text-decoration:none;background:#f7faff;color:#1d477d}
.featured-status{font-size:.76rem;color:var(--muted);min-height:1em;margin-top:5px}

/* ===== FOOTER ===== */
footer{background:#e3eef9;color:var(--navy);padding:8px 0;font-size:.75rem;border-top:1px solid var(--line)}
footer a{color:var(--navy)}

/* ===== TABLET ===== */
@media(max-width:900px){
  .bottom-panels{grid-template-columns:1fr}
  .hero-grid{grid-template-columns:1fr;gap:9px}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .verse{padding:5px 10px}
}
/* ===== IPHONE / MOBILE ===== */
@media(max-width:760px){
  .ace-compact-header .ace-compact-inner{display:flex;flex-direction:column;align-items:stretch;flex-wrap:nowrap;gap:5px;padding:9px 12px}
  .ace-compact-brand{align-self:flex-start}
  .ace-compact-nav{display:flex;flex-direction:column;align-items:stretch;flex-wrap:nowrap;width:100%;gap:0;background:var(--white);border:1px solid var(--line);border-radius:7px;overflow:visible}
  .ace-compact-menu{position:static;width:100%;background:var(--white)}
  .ace-compact-nav>a,.ace-compact-menu>summary{display:flex;justify-content:space-between;width:100%;min-height:44px;padding:12px 14px;border-radius:0;border-bottom:1px solid var(--line);background:var(--white);color:var(--navy);font-size:15px;white-space:normal}
  .ace-compact-nav>a:hover,.ace-compact-menu>summary:hover,.ace-compact-menu[open]>summary{background:var(--soft);color:var(--navy)}
  .ace-compact-dropdown,.ace-compact-menu:last-child .ace-compact-dropdown{position:static;left:auto;right:auto;top:auto;width:100%;min-width:0;max-width:none;margin:0;padding:3px 0;border:0;border-bottom:1px solid var(--line);border-radius:0;box-shadow:none;background:var(--white)}
  .ace-compact-menu:not([open])>.ace-compact-dropdown{display:none}
  .ace-compact-dropdown>a{display:block;min-height:44px;padding:12px 20px;background:var(--white);color:var(--navy);font-size:14px;line-height:1.4;white-space:normal}
  .ace-compact-dropdown>a:hover,.ace-compact-dropdown>a.ace-compact-current{background:var(--soft);color:var(--navy)}
  .ace-compact-caret{margin-left:auto}
  .ace-compact-menu[open]>summary .ace-compact-caret{transform:rotate(180deg)}
  /* Optional hamburger wrapper: only applies if PHP contains this element. */
  .ace-mobile-navigation{display:block;width:100%}
  .ace-mobile-toggle{display:block;min-height:44px;padding:12px 14px;background:var(--white);color:var(--navy);border:1px solid var(--line);border-radius:7px;font-size:15px;font-weight:700;cursor:pointer;list-style:none}
  .ace-mobile-navigation:not([open])>.ace-compact-nav{display:none}
  .ace-mobile-navigation[open]>.ace-compact-nav{display:flex;margin-top:5px}
}
@media(max-width:650px){.featured{grid-template-columns:1fr}.featured-card{order:-1}}
@media(max-width:560px){.cards{grid-template-columns:1fr}.wrap{padding:0 12px}.hero{padding:11px 0}}
@media(prefers-reduced-motion:reduce){.ace-compact-header *{scroll-behavior:auto;transition:none}}