/* ============================================================
   MAVI FOUNDATION — Design System v2 (warm, modern, kid-friendly)
   Brand blue: #009aff | CTA orange: #f47629
   Light default; [data-theme="dark"] overrides.
   ============================================================ */

:root{
  --brand:#009aff; --brand-deep:#0073d6;
  --cta:#f47629;  --cta-deep:#e25c12;
  --sun:#ffc23c; --mint:#21c7a8; --coral:#ff6b8a; --violet:#8b7cff;

  --bg:#fef8f1; --bg-blue:#eaf5ff; --bg-peach:#fff1e3; --bg-mint:#e7faf4;
  --surface:#ffffff; --surface-2:#fff7ee;
  --ink:#1d2742; --ink-soft:#46506c; --muted:#7e8aa3;
  --line:#f0e6d8; --line-2:#e6dccc;

  --shadow-sm:0 2px 6px rgba(29,39,66,.06);
  --shadow:0 14px 34px rgba(29,39,66,.10);
  --shadow-lg:0 28px 70px rgba(29,39,66,.16);
  --shadow-brand:0 16px 40px rgba(0,154,255,.30);
  --shadow-cta:0 16px 38px rgba(244,118,41,.34);

  --display:"Baloo 2",system-ui,sans-serif;
  --body:"Nunito",system-ui,sans-serif;

  --r:14px; --r-md:20px; --r-lg:30px; --r-xl:42px; --r-pill:100px;
  --maxw:1180px; --header-h:78px;
}
[data-theme="dark"]{
  --brand:#37b0ff; --brand-deep:#7cc8ff;
  --cta:#ff8c44; --cta-deep:#ffa770;
  --sun:#ffce5e; --mint:#33d6b6; --coral:#ff8099; --violet:#a99bff;

  --bg:#0d1525; --bg-blue:#10203a; --bg-peach:#1d1a2e; --bg-mint:#102a2a;
  --surface:#16213a; --surface-2:#1b2742;
  --ink:#eef3fb; --ink-soft:#c6d2e8; --muted:#90a0bd;
  --line:#26334e; --line-2:#33446a;

  --shadow-sm:0 2px 6px rgba(0,0,0,.4);
  --shadow:0 16px 40px rgba(0,0,0,.5);
  --shadow-lg:0 30px 70px rgba(0,0,0,.6);
  --shadow-brand:0 16px 44px rgba(55,176,255,.35);
  --shadow-cta:0 16px 40px rgba(255,140,68,.32);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--body);background:var(--bg);color:var(--ink);line-height:1.7;font-size:1.04rem;font-weight:500;overflow-x:hidden;transition:background .35s,color .35s}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
svg{display:block}

h1,h2,h3,h4{font-family:var(--display);font-weight:700;line-height:1.1;color:var(--ink);letter-spacing:-.01em}
h1{font-size:clamp(2.3rem,5.4vw,4rem);font-weight:800}
h2{font-size:clamp(1.9rem,3.6vw,2.8rem);font-weight:800}
h3{font-size:clamp(1.2rem,2vw,1.5rem)}
p{color:var(--ink-soft)}

.container{width:min(100% - 2.2rem,var(--maxw));margin-inline:auto}
.section{padding:clamp(3.2rem,7vw,6rem) 0;position:relative}
.center{text-align:center}.muted{color:var(--muted)}

/* soft section colours */
.sec-blue{background:var(--bg-blue)} .sec-peach{background:var(--bg-peach)} .sec-mint{background:var(--bg-mint)}

/* curved divider */
.wave-top{position:absolute;top:-1px;left:0;width:100%;line-height:0}
.wave-top svg{width:100%;height:60px}

/* ---- kicker / heading ---- */
.kicker{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--body);font-weight:800;font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--brand);background:color-mix(in srgb,var(--brand) 14%,transparent);padding:.45rem 1rem;border-radius:var(--r-pill)}
.kicker.k-cta{color:var(--cta-deep);background:color-mix(in srgb,var(--cta) 18%,transparent)}
[data-theme="dark"] .kicker.k-cta{color:var(--cta)}
.kicker.k-mint{color:#0e8f78;background:color-mix(in srgb,var(--mint) 22%,transparent)}
[data-theme="dark"] .kicker.k-mint{color:var(--mint)}
.section-head{max-width:680px;margin-bottom:2.8rem}
.section-head.center{margin-inline:auto}
.section-head h2{margin-top:.9rem}
.section-head p{margin-top:.9rem;font-size:1.1rem}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;font-family:var(--display);font-weight:700;font-size:1.02rem;padding:.85rem 1.7rem;border-radius:var(--r-pill);border:2.5px solid transparent;cursor:pointer;transition:transform .18s,box-shadow .25s,background .2s,color .2s;white-space:nowrap}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-cta{background:var(--cta);color:#fff;box-shadow:var(--shadow-cta)}
.btn-cta:hover{transform:translateY(-3px);box-shadow:0 20px 46px rgba(244,118,41,.46)}
.btn-wa{background:#25d366;color:#06310f;box-shadow:0 14px 32px rgba(37,211,102,.35)}
.btn-wa:hover{transform:translateY(-3px)}
.btn-brand{background:var(--brand);color:#fff;box-shadow:var(--shadow-brand)}
.btn-brand:hover{transform:translateY(-3px)}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-3px)}
.btn-sm{padding:.6rem 1.2rem;font-size:.92rem}
.btn-row{display:flex;flex-wrap:wrap;gap:.9rem}

/* ============================================================ HEADER */
.site-header{position:sticky;top:0;z-index:100;height:var(--header-h);display:flex;align-items:center;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--line);transition:.35s}
.nav{display:flex;align-items:center;justify-content:space-between;width:100%;gap:1rem;padding: 0 15px;}
.brand-logo{display:flex;align-items:center}
.brand-logo img{height:42px;width:auto}
.logo-light{display:block}.logo-dark{display:none}
[data-theme="dark"] .logo-light{display:none}[data-theme="dark"] .logo-dark{display:block}
.nav-links{display:flex;align-items:center;gap:.2rem}
.nav-links a{font-family:var(--display);font-weight:600;font-size:1rem;color:var(--ink-soft);padding:.5rem .85rem;border-radius:var(--r);transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--brand);background:color-mix(in srgb,var(--brand) 12%,transparent)}
.nav-actions{display:flex;align-items:center;gap:.7rem}
.theme-toggle{width:46px;height:46px;border-radius:14px;border:2.5px solid var(--line-2);background:var(--surface);color:var(--ink);cursor:pointer;display:grid;place-items:center;font-size:1.1rem;transition:.25s}
.theme-toggle:hover{border-color:var(--cta);color:var(--cta);transform:rotate(-15deg)}
.theme-toggle .fa-sun{display:none}[data-theme="dark"] .theme-toggle .fa-sun{display:inline}[data-theme="dark"] .theme-toggle .fa-moon{display:none}
.hamburger{display:none;width:46px;height:46px;border-radius:14px;border:2.5px solid var(--line-2);background:var(--surface);color:var(--ink);font-size:1.2rem;cursor:pointer}
.has-drop{position:relative}
.drop{position:absolute;top:calc(100% + 12px);left:0;min-width:270px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-lg);padding:.55rem;opacity:0;visibility:hidden;transform:translateY(10px);transition:.22s}
.has-drop:hover .drop{opacity:1;visibility:visible;transform:translateY(0)}
.drop a{display:flex;align-items:center;gap:.7rem;padding:.7rem .85rem;border-radius:12px;font-size:.96rem;font-weight:600}
.drop a i{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:#fff;font-size:.9rem}
.mobile-drawer{position:fixed;inset:var(--header-h) 0 0 0;z-index:99;background:var(--bg);padding:1.4rem;transform:translateX(100%);transition:transform .3s;overflow-y:auto;display:flex;flex-direction:column;gap:.2rem}
.mobile-drawer.open{transform:translateX(0)}
.mobile-drawer a{font-family:var(--display);font-weight:600;font-size:1.25rem;padding:.85rem .4rem;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:.7rem}
.mobile-drawer .m-sub{font-size:1.05rem;padding-left:1.3rem;color:var(--ink-soft)}
.mobile-cta{margin-top:1.3rem;display:flex;flex-direction:column;gap:.7rem}

/* ============================================================ HERO */
.hero{position:relative;overflow:hidden;padding:clamp(2.5rem,5vw,4rem) 0 clamp(3rem,6vw,5rem)}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.02fr .98fr;gap:2.6rem;align-items:center}
.hero-bg{position:absolute;inset:0;z-index:0;overflow:hidden}
.blob{position:absolute;border-radius:50%;filter:blur(8px);opacity:.5}
.blob.b1{width:430px;height:430px;background:radial-gradient(circle,var(--brand),transparent 70%);top:-140px;right:-100px;opacity:.35}
.blob.b2{width:380px;height:380px;background:radial-gradient(circle,var(--cta),transparent 70%);bottom:-150px;left:-120px;opacity:.28}
.dots{position:absolute;inset:0;background-image:radial-gradient(var(--line-2) 1.5px,transparent 1.5px);background-size:26px 26px;opacity:.5;mask-image:radial-gradient(ellipse at 60% 40%,#000,transparent 75%)}
.hero-copy .kicker{margin-bottom:1.1rem}
.hero h1{margin-bottom:1.1rem}
.hero h1 .u{position:relative;color:var(--brand);white-space:nowrap}
.hero h1 .u-cta{color:var(--cta)}
.hero h1 .u svg{position:absolute;left:0;bottom:-.32em;width:100%;height:.3em}
.hero-sub{font-size:1.18rem;max-width:540px;font-weight:600}
.hero-actions{margin-top:1.9rem}
.bottom-spacer {margin-bottom:1rem}
.hero-trust{display:flex;gap:1.8rem;margin-top:2.2rem;flex-wrap:wrap}
.hero-trust .s strong{font-family:var(--display);font-weight:800;font-size:1.8rem;color:var(--brand);display:block;line-height:1}
.hero-trust .s span{font-size:.86rem;color:var(--muted);font-weight:700}
.hero-art{position:relative}
.hero-art svg{width:100%;height:auto;overflow:visible}

/* ============================================================ SVG animation helpers */
.an{transform-box:fill-box;transform-origin:center}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes floaty2{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes bob{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-7px) rotate(4deg)}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.09)}}
@keyframes blink{0%,92%,100%{transform:scaleY(1)}96%{transform:scaleY(.1)}}
@keyframes pop{0%{transform:scale(.6);opacity:0}60%{transform:scale(1.08)}100%{transform:scale(1);opacity:1}}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes sway{0%,100%{transform:rotate(-6deg)}50%{transform:rotate(6deg)}}
.a-float{animation:floaty 4.5s ease-in-out infinite}
.a-float2{animation:floaty2 5.5s ease-in-out infinite}
.a-bob{animation:bob 4s ease-in-out infinite}
.a-bob-2{animation:bob 5s ease-in-out infinite .6s}
.a-spin{animation:spin 16s linear infinite}
.a-spin-slow{animation:spin 30s linear infinite}
.a-pulse{animation:pulse 3s ease-in-out infinite}
.a-blink{animation:blink 5s ease-in-out infinite}
.a-sway{animation:sway 4.5s ease-in-out infinite}
.dl1{animation-delay:.3s}.dl2{animation-delay:.7s}.dl3{animation-delay:1.1s}.dl4{animation-delay:1.5s}

/* ============================================================ CARDS */
.grid{display:grid;gap:1.5rem}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}

.scard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.7rem;position:relative;overflow:hidden;transition:transform .26s,box-shadow .26s}
.scard:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.scard .illo{height:130px;margin:-.4rem -.4rem 1rem;border-radius:var(--r-md);display:grid;place-items:center;overflow:hidden}
.scard .illo svg{width:auto;height:118px;overflow:visible}
.scard h3{margin-bottom:.5rem}
.scard p{font-size:.97rem}
.scard .tag{position:absolute;top:1rem;right:1rem;font-family:var(--display);font-size:.72rem;font-weight:700;letter-spacing:.03em;padding:.3rem .7rem;border-radius:var(--r-pill);background:#25d366;color:#053218;z-index:2}
.flist{margin:.9rem 0;display:flex;flex-direction:column;gap:.5rem}
.flist li{display:flex;gap:.6rem;font-size:.96rem;color:var(--ink-soft);font-weight:600}
.flist li i{color:var(--mint);margin-top:.28rem}
.clink{display:inline-flex;align-items:center;gap:.45rem;margin-top:1rem;font-family:var(--display);font-weight:700;color:var(--brand)}
.clink i{transition:transform .2s}.scard:hover .clink i{transform:translateX(5px)}

.illo-blue{background:linear-gradient(135deg,#dcefff,#bfe6ff)} 
.illo-peach{background:linear-gradient(135deg,#ffe9d4,#ffd9b8)}
.illo-mint{background:linear-gradient(135deg,#d3f7ec,#b9f0df)}
.illo-violet{background:linear-gradient(135deg,#e7e3ff,#d6cfff)}
[data-theme="dark"] .illo-blue{background:linear-gradient(135deg,#0e2c4a,#10243d)}
[data-theme="dark"] .illo-peach{background:linear-gradient(135deg,#3a2a1c,#2b2032)}
[data-theme="dark"] .illo-mint{background:linear-gradient(135deg,#0f3733,#0e2a2a)}
[data-theme="dark"] .illo-violet{background:linear-gradient(135deg,#2a2550,#221f40)}

/* feature mini cards */
.mini{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:1.4rem;transition:.24s}
.mini:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.mini .ic{width:54px;height:54px;border-radius:16px;display:grid;place-items:center;font-size:1.35rem;color:#fff;margin-bottom:.9rem}
.bg-blue{background:linear-gradient(135deg,var(--brand),var(--brand-deep))}
.bg-cta{background:linear-gradient(135deg,var(--cta),var(--cta-deep))}
.bg-mint{background:linear-gradient(135deg,var(--mint),#0e9f86)}
.bg-violet{background:linear-gradient(135deg,var(--violet),#6a59e6)}
.bg-sun{background:linear-gradient(135deg,var(--sun),#f0a91e)}
.mini h3{font-size:1.18rem;margin-bottom:.35rem}
.mini p{font-size:.95rem}

/* stat */
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.8rem 1.2rem;text-align:center}
.stat .num{font-family:var(--display);font-weight:800;font-size:clamp(2rem,4vw,2.8rem);color:var(--brand);line-height:1}
.stat .lbl{margin-top:.4rem;font-weight:700;color:var(--ink-soft);font-size:.95rem}

/* split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.art-card{border-radius:var(--r-lg);overflow:hidden;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);position:relative}
.art-card svg{width:100%;height:auto;display:block;overflow:visible}

/* schools */
.school{display:flex;align-items:center;gap:.8rem;padding:1.1rem 1.3rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);font-family:var(--display);font-weight:600;transition:.22s}
.school:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand)}
.school i{color:var(--brand);font-size:1.4rem}

/* team */
.tcard{text-align:center;padding:1.6rem 1.2rem}
.tavatar{width:110px;height:110px;margin:0 auto 1rem;border-radius:50%;display:grid;place-items:center;overflow:hidden;border:4px solid var(--surface);box-shadow:var(--shadow)}
.tavatar svg{width:110px;height:110px}
.tcard h3{font-size:1.2rem}
.tcard .role{color:var(--cta-deep);font-weight:800;font-size:.85rem;letter-spacing:.03em;margin-top:.15rem}
[data-theme="dark"] .tcard .role{color:var(--cta)}
.tcard .texp{color:var(--muted);font-weight:600;font-size:.82rem;line-height:1.45;margin-top:.6rem}

/* gallery */
.ggrid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
.gitem{position:relative;border-radius:var(--r-md);overflow:hidden;aspect-ratio:4/3;border:1px solid var(--line);cursor:pointer;transition:.25s}
.gitem:hover{transform:scale(1.025);box-shadow:var(--shadow-lg)}
.gitem svg{width:100%;height:100%;object-fit:cover}
.gitem .g-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.gitem .g-overlay{position:absolute;inset:0;width:100%;height:100%;opacity:.25;pointer-events:none}
.gitem .cap{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(15,20,40,.78));color:#fff;padding:1.4rem .9rem .8rem;font-family:var(--display);font-weight:700;font-size:.95rem;display:flex;align-items:center;gap:.45rem}

/* contact */
.cgrid{display:grid;grid-template-columns:1fr 1.05fr;gap:2.2rem;align-items:stretch}
.ccard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.8rem}
.crow{display:flex;gap:1rem;padding:1rem 0;border-bottom:1px solid var(--line)}
.crow:last-child{border:none}
.crow .ic{width:48px;height:48px;flex:none;border-radius:14px;display:grid;place-items:center;color:#fff;font-size:1.15rem}
.crow strong{display:block;font-family:var(--display)}
.crow a,.crow span{color:var(--ink-soft);font-weight:600}.crow a:hover{color:var(--brand)}
.map-wrap{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);min-height:380px}
.map-wrap iframe{width:100%;height:100%;min-height:380px;border:0;display:block}

/* CTA band */
.cta-band{border-radius:var(--r-xl);padding:clamp(2.4rem,5vw,4rem);position:relative;overflow:hidden;background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#fff;text-align:center}
.cta-band::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,var(--cta),transparent 70%);opacity:.5;top:-120px;right:-60px}
.cta-band>*{position:relative;z-index:1}
.cta-band h2{color:#fff}.cta-band p{color:rgba(255,255,255,.92);max-width:560px;margin:.9rem auto 1.8rem;font-size:1.08rem}
.cta-band .btn-row{justify-content:center}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.cta-band .btn-ghost:hover{background:#fff;color:var(--brand)}

/* video slot */
.video-slot{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);aspect-ratio:16/9;background:linear-gradient(135deg,#cfeeff,#ffe2cb)}
[data-theme="dark"] .video-slot{background:linear-gradient(135deg,#102a44,#2a1f2e)}
.video-slot iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-ph{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.8rem;text-align:center;padding:1.5rem}
.video-ph .play{width:78px;height:78px;border-radius:50%;background:var(--cta);color:#fff;display:grid;place-items:center;font-size:1.7rem;box-shadow:var(--shadow-cta);animation:pulse 2.6s ease-in-out infinite}
.video-ph p{font-family:var(--display);font-weight:700;color:var(--ink)}

/* page hero (interior) */
.phero{position:relative;overflow:hidden;padding:clamp(2rem,5vw,3rem) 0 0}
.phero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:2.2rem;align-items:center}
.phero .blob.b1{top:-120px}
.crumb{display:flex;gap:.5rem;align-items:center;font-size:.85rem;color:var(--muted);margin-bottom:.9rem;font-weight:700}
.crumb a:hover{color:var(--brand)}
.phero h1{font-size:clamp(2.1rem,4.6vw,3.4rem);margin-bottom:.8rem}
.phero p{font-size:1.12rem;max-width:560px;font-weight:600}
.pricing-pill{display:inline-flex;align-items:center;gap:.6rem;background:color-mix(in srgb,#25d366 16%,transparent);color:#0e8c47;border:2px solid color-mix(in srgb,#25d366 35%,transparent);padding:.55rem 1.1rem;border-radius:var(--r-pill);font-family:var(--display);font-weight:700;margin:1rem 0}
[data-theme="dark"] .pricing-pill{color:#4ade80}

/* prose */
.prose{max-width:760px}
.prose h2{margin:2rem 0 .8rem}.prose h3{margin:1.5rem 0 .6rem}
.prose p{margin-bottom:1rem}
.prose ul{margin:0 0 1.2rem 1.3rem;list-style:disc}.prose ul li{margin-bottom:.5rem;color:var(--ink-soft);font-weight:600}
.prose a{color:var(--brand);font-weight:700}
.callout{background:var(--surface-2);border-left:5px solid var(--cta);border-radius:var(--r-md);padding:1.2rem 1.4rem;margin:1.4rem 0;font-weight:600}
.callout code{background:color-mix(in srgb,var(--brand) 14%,transparent);padding:.1rem .4rem;border-radius:6px;font-size:.9em}

/* syllabus accordion */
.syl-total{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1.1rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.3rem 1.6rem;margin-bottom:1.6rem;box-shadow:var(--shadow-sm)}
.syl-total strong{font-family:var(--display);font-size:1.1rem}
.syl-total span{color:var(--muted);font-weight:600;font-size:.92rem}
.syl-list{display:flex;flex-direction:column;gap:1rem}
.syl-mod{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:box-shadow .24s}
.syl-mod[open]{box-shadow:var(--shadow)}
.syl-mod summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:1rem;padding:1.2rem 1.4rem;user-select:none}
.syl-mod summary::-webkit-details-marker{display:none}
.syl-ic{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;color:#fff;font-size:1.15rem;flex:none}
.syl-title{flex:1;font-family:var(--display);font-weight:700;font-size:1.08rem}
.syl-title small{display:block;font-family:var(--body);font-weight:600;color:var(--muted);font-size:.82rem;margin-top:.2rem}
.syl-dur{font-family:var(--display);font-size:.78rem;font-weight:700;letter-spacing:.03em;padding:.35rem .85rem;border-radius:var(--r-pill);background:color-mix(in srgb,var(--brand) 14%,transparent);color:var(--brand);white-space:nowrap}
.syl-chev{color:var(--muted);transition:transform .25s;flex:none}
.syl-mod[open] .syl-chev{transform:rotate(180deg)}
.syl-body{padding:0 1.4rem 1.4rem 4.6rem;column-count:2;column-gap:1.8rem}
.syl-body li{display:flex;gap:.5rem;font-size:.94rem;color:var(--ink-soft);font-weight:600;break-inside:avoid;margin-bottom:.5rem}
.syl-body li i{color:var(--mint);margin-top:.28rem;flex:none}

/* autoplay marquee gallery */
.marquee-wrap{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.marquee-track{display:flex;gap:1.5rem;width:max-content;animation:marqueeScroll 34s linear infinite}
.marquee-track:hover{animation-play-state:paused}
@keyframes marqueeScroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.marquee-card{flex:0 0 auto;width:240px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-sm)}
.marquee-card .mq-img{height:150px;display:grid;place-items:center;font-size:2.6rem;color:#fff}
.marquee-card .mq-cap{padding:.9rem 1rem;font-family:var(--display);font-weight:700;font-size:.92rem}

/* letter-by-letter text reveal */
.letter-anim .lt{display:inline-block;opacity:0;transform:translateY(6px);animation:ltIn .4s ease forwards}
@keyframes ltIn{to{opacity:1;transform:translateY(0)}}

/* testimonial / success-story cards */
.qcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.7rem;transition:transform .26s,box-shadow .26s;display:flex;flex-direction:column}
.qcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.qcard .qtop{display:flex;align-items:center;gap:.9rem;margin-bottom:1rem}
.qcard .qavatar{width:52px;height:52px;border-radius:50%;flex:none;overflow:hidden;border:3px solid var(--surface);box-shadow:var(--shadow-sm)}
.qcard .qavatar svg{width:100%;height:100%}
.qcard .qname{font-family:var(--display);font-weight:700;font-size:1rem}
.qcard .qmeta{font-size:.8rem;color:var(--muted);font-weight:700}
.qcard .qtext{font-size:.96rem;color:var(--ink-soft);font-weight:600;flex:1}
.qcard .qtext i{color:color-mix(in srgb,var(--brand) 45%,transparent);margin-right:.3rem}
.qtag{align-self:flex-start;display:inline-flex;align-items:center;gap:.35rem;margin-top:1.1rem;font-family:var(--display);font-size:.76rem;font-weight:700;padding:.32rem .75rem;border-radius:var(--r-pill);background:color-mix(in srgb,var(--brand) 14%,transparent);color:var(--brand)}
.qtag:hover{background:var(--brand);color:#fff}

/* success-story cross-link banner */
.story-teaser{display:flex;align-items:center;justify-content:space-between;gap:1.4rem;flex-wrap:wrap;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.5rem 1.8rem;box-shadow:var(--shadow-sm)}
.story-teaser .left{display:flex;align-items:center;gap:1.1rem}
.story-teaser .ic{width:52px;height:52px;flex:none;border-radius:15px;display:grid;place-items:center;font-size:1.3rem;color:#fff}
.story-teaser h3{font-size:1.1rem;margin-bottom:.15rem}
.story-teaser p{margin:0;font-size:.92rem}

/* vedic demo */
.vdemo{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.6rem;box-shadow:var(--shadow-sm)}
.vdemo h3{display:flex;align-items:center;gap:.6rem;margin-bottom:.3rem}
.vdemo h3 .n{width:36px;height:36px;border-radius:12px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:.95rem;flex:none}
.vdemo .stage{margin:1rem 0;border-radius:var(--r-md);background:var(--bg-blue);padding:1rem;display:grid;place-items:center;min-height:170px}
[data-theme="dark"] .vdemo .stage{background:#10203a}
.vdemo .stage svg{width:100%;max-width:340px;height:auto;overflow:visible}
.vstep-cap{text-align:center;font-weight:700;color:var(--ink-soft);min-height:2.6em}
.vbtns{display:flex;gap:.6rem;justify-content:center;margin-top:.6rem}
.vbtns button{font-family:var(--display);font-weight:700;border:2px solid var(--line-2);background:var(--surface);color:var(--ink);border-radius:var(--r-pill);padding:.45rem 1.1rem;cursor:pointer;transition:.2s}
.vbtns button:hover{border-color:var(--brand);color:var(--brand)}
.vbtns button.primary{background:var(--brand);color:#fff;border-color:var(--brand)}

/* footer */
.site-footer{background:var(--surface-2);border-top:1px solid var(--line);padding:3.4rem 0 1.4rem;margin-top:1rem}
.fgrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.2fr;gap:2.2rem}
.fgrid h4{font-size:1.05rem;margin-bottom:1rem}
.fgrid a{color:var(--ink-soft);font-size:.95rem;display:block;padding:.28rem 0;font-weight:600}
.fgrid a i{width:16px;text-align:center;margin-right:.2rem}
.fgrid a:hover{color:var(--brand)}
.fabout img{height:42px;margin-bottom:1rem}
.fabout p{font-size:.94rem;margin-bottom:1.2rem}
.socials{display:flex;gap:.6rem}
.socials a{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--surface);border:1px solid var(--line);font-size:1.15rem;color:var(--ink-soft);transition:.22s}
.socials a:hover{transform:translateY(-3px);color:#fff}
.socials a.li:hover{background:#0a66c2;border-color:#0a66c2}.socials a.fb:hover{background:#1877f2;border-color:#1877f2}.socials a.md:hover{background:#000;border-color:#000}.socials a.wa:hover{background:#25d366;border-color:#25d366}
.fbottom{margin-top:2.4rem;padding-top:1.4rem;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.88rem;color:var(--muted);font-weight:600}
.fbottom a{color:var(--muted)}.fbottom a:hover{color:var(--brand)}

/* floating WA */
.float-wa{position:fixed;bottom:22px;right:22px;z-index:90;width:60px;height:60px;border-radius:50%;background:#25d366;color:#fff;display:grid;place-items:center;font-size:1.7rem;box-shadow:0 12px 32px rgba(37,211,102,.5);animation:floaty 3.5s ease-in-out infinite}
.float-wa:hover{transform:scale(1.1)}

/* gallery slideshow (gallery-view-*.html) */
.gv-stage{position:relative;height:clamp(340px,66vh,700px);border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-lg);background:var(--surface)}
.gv-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .8s ease}
.gv-slide.active{opacity:1;visibility:visible}
.gv-slide svg,.gv-slide img{width:100%;height:100%;object-fit:cover;display:block}
.gv-slide.active svg,.gv-slide.active img{animation:gvkb 6s ease-out forwards}
@keyframes gvkb{from{transform:scale(1.07)}to{transform:scale(1)}}
.gv-slide .gv-photo{position:absolute;inset:0;z-index:0}
.gv-slide .gv-overlay{position:absolute;inset:0;z-index:1;opacity:.25;pointer-events:none}
.gv-cap{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:3rem 1.6rem 1.5rem;background:linear-gradient(transparent,rgba(13,18,34,.82));color:#fff;font-family:var(--display);font-weight:800;font-size:clamp(1.15rem,2.8vw,1.9rem);display:flex;align-items:center;gap:.7rem;flex-wrap:wrap}
.gv-cap i{color:var(--sun)}
.gv-year{font-family:var(--display);font-weight:800;font-size:.72rem;letter-spacing:.03em;background:var(--cta);color:#fff;padding:.28rem .7rem;border-radius:var(--r-pill)}
.gv-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:54px;height:54px;border-radius:50%;border:none;background:rgba(255,255,255,.92);color:var(--ink);font-size:1.2rem;cursor:pointer;display:grid;place-items:center;box-shadow:var(--shadow);transition:transform .2s,background .2s}
.gv-nav:hover{background:#fff;transform:translateY(-50%) scale(1.1)}
.gv-prev{left:16px}.gv-next{right:16px}
.gv-tools{position:absolute;top:16px;right:16px;z-index:3;display:flex;gap:.5rem}
.gv-tools button,.gv-counter{font-family:var(--display);font-weight:700;font-size:.9rem;color:#fff;background:rgba(13,18,34,.55);border:none;border-radius:var(--r-pill);padding:.45rem .95rem;display:flex;align-items:center;gap:.45rem;backdrop-filter:blur(8px)}
.gv-tools button{cursor:pointer;transition:background .2s}.gv-tools button:hover{background:rgba(13,18,34,.78)}
.gv-counter{align-self:center}
.gv-progress{position:absolute;left:0;right:0;bottom:0;z-index:4;height:5px;background:rgba(255,255,255,.28)}
.gv-progress i{display:block;height:100%;width:0;background:var(--cta);border-radius:0 3px 3px 0}
.gv-progress i.run{animation:gvfill 5s linear forwards}
@keyframes gvfill{from{width:0}to{width:100%}}
.gv-wrap.paused .gv-progress i,.gv-wrap.paused .gv-slide.active svg,.gv-wrap.paused .gv-slide.active img{animation-play-state:paused}
.gv-thumbs{display:flex;gap:.7rem;margin-top:1rem;overflow-x:auto;padding:.35rem .15rem 1rem;scrollbar-width:thin}
.gv-thumb{flex:0 0 auto;width:112px;height:70px;border-radius:14px;overflow:hidden;border:3px solid transparent;background:var(--surface);cursor:pointer;padding:0;position:relative;transition:transform .2s,border-color .2s,box-shadow .2s}
.gv-thumb svg,.gv-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.gv-thumb .gv-photo{position:absolute;inset:0;z-index:0}
.gv-thumb .gv-overlay{position:absolute;inset:0;z-index:1;opacity:.25;pointer-events:none}
.gv-thumb svg *{animation:none!important}
.gv-thumb:hover{transform:translateY(-3px)}
.gv-thumb.active{border-color:var(--brand);box-shadow:var(--shadow)}
.gv-thumb.active::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 2px #fff;border-radius:11px}

/* reveal */
.reveal{opacity:0;transform:translateY(24px)}
.reveal.in{opacity:1;transform:none;transition:opacity .7s,transform .7s}
.d1{transition-delay:.05s}.d2{transition-delay:.13s}.d3{transition-delay:.21s}.d4{transition-delay:.29s}


.feature-list {
  margin-top:1rem;display:grid;grid-template-columns:repeat(2,1fr);gap:.4rem 1.5rem
}

/* ============================================================ RESPONSIVE */

@media screen and (min-width: 981px) and (max-width: 1060px) {
  .btn-cta .btn-text {display: none}
}
@media screen and (min-width: 981px) and (max-width: 1195px) {
  .nav-links{gap:0}
  .nav-links a{padding:.5rem .55rem;font-size:.93rem}
}
@media(max-width:980px){
  .hero .container,.phero .container,.split,.cgrid{grid-template-columns:1fr}
  .phero .container{gap:1.4rem}
  .hero-art,.phero .hero-art{max-width:460px;margin-inline:auto;order:-1}
  .g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}
  .fgrid{grid-template-columns:1fr 1fr}
  .nav-links,.desk-cta{display:none}.hamburger{display:grid} .hamburger i {line-height:44px}
  .syl-body{column-count:1;padding-left:1.4rem}
  .gv-tools {position:static;justify-content:space-between; margin-top:1rem;gap:1rem}
}
@media(max-width:560px){
  .g2,.g3,.g4,.ggrid{grid-template-columns:1fr}
  .ggrid{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr}
  .btn{flex:1 1 auto}
  .hero-trust{gap:1.2rem}
  .gv-thumb{width:88px;height:56px}
  .gv-nav{width:46px;height:46px}
  .feature-list{grid-template-columns:1fr}
  .mini .ic { margin: 0 auto 0.9rem; }
  .gv-tools { padding: 0 15px;}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}

/* ============================================================ LOGO INTERPRETER (resources/logo-interpreter.html) */
code{font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-size:.92em;background:color-mix(in srgb,var(--brand) 12%,transparent);color:var(--brand-deep);padding:.1em .4em;border-radius:6px}
[data-theme="dark"] code{color:var(--brand)}
.logo-intro{padding:clamp(1.6rem,4vw,2.6rem) 0 1.2rem}
.crumb{display:flex;align-items:center;gap:.5rem;font-size:.86rem;font-weight:700;color:var(--muted);margin-bottom:1.1rem}
.crumb a{color:var(--brand)}
.logo-intro-head{max-width:760px}
.logo-intro-head h1{margin:.7rem 0 .8rem;font-size:clamp(1.9rem,3.6vw,2.6rem)}
.logo-intro-head p{font-size:1.06rem}

.logo-app{position:relative;margin:0 auto 1rem;padding:0 1.1rem;max-width:1440px}
.logo-app:fullscreen,.logo-app:-webkit-full-screen{max-width:none;width:100vw;height:100vh;margin:0;padding:1rem 1.1rem;background:var(--bg);display:flex;flex-direction:column;overflow:hidden}
.logo-app:fullscreen .logo-toolbar,.logo-app:-webkit-full-screen .logo-toolbar{flex:0 0 auto}
.logo-app:fullscreen .logo-hint,.logo-app:-webkit-full-screen .logo-hint{flex:0 0 auto}
.logo-app:fullscreen .logo-main,.logo-app:-webkit-full-screen .logo-main{flex:1 1 auto;min-height:0}
.logo-app:fullscreen .logo-editor-col,.logo-app:-webkit-full-screen .logo-editor-col{min-height:0}
.logo-app:fullscreen .logo-editor,.logo-app:-webkit-full-screen .logo-editor{min-height:0}
.logo-app:fullscreen .logo-stage-col,.logo-app:-webkit-full-screen .logo-stage-col{min-height:0}
.logo-app:fullscreen .logo-stage-wrap,.logo-app:-webkit-full-screen .logo-stage-wrap{aspect-ratio:auto;height:100%}
.logo-toolbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.7rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md) var(--r-md) 0 0;padding:.8rem 1rem}
.logo-toolbar-group{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}
.logo-kbd{font-family:var(--body);font-size:.68rem;font-weight:700;opacity:.75;margin-left:.35rem}
.logo-field{display:flex;align-items:center;gap:.5rem;background:var(--bg);border:1.5px solid var(--line-2);border-radius:var(--r-pill);padding:.45rem .9rem;color:var(--ink-soft);font-weight:700;font-size:.88rem}
.logo-field select{background:transparent;border:none;color:var(--ink);font-family:var(--body);font-weight:700;font-size:.88rem;cursor:pointer}
.logo-field select:focus{outline:none}
.logo-speed input[type="range"]{width:90px;accent-color:var(--brand)}
.logo-color{padding:.4rem .7rem}
.logo-color input[type="color"]{width:26px;height:26px;padding:0;border:none;border-radius:50%;cursor:pointer;background:transparent}
.logo-color input[type="color"]::-webkit-color-swatch-wrapper{padding:0;border-radius:50%}
.logo-color input[type="color"]::-webkit-color-swatch{border:1.5px solid var(--line-2);border-radius:50%}
.logo-color input[type="color"]::-moz-color-swatch{border:1.5px solid var(--line-2);border-radius:50%}
.logo-icon-btn{display:inline-flex;align-items:center;gap:.4rem;width:auto;min-width:42px;height:42px;padding:0 .8rem;border-radius:var(--r-pill);border:1.5px solid var(--line-2);background:var(--surface);color:var(--ink);cursor:pointer;font-family:var(--display);font-weight:700;font-size:.88rem;transition:.2s}
.logo-icon-btn:hover{border-color:var(--brand);color:var(--brand)}
.logo-icon-btn[aria-pressed="true"]{border-color:var(--cta);color:var(--cta)}
.logo-hint{background:var(--bg-mint);border:1px solid var(--line);border-top:none;padding:.6rem 1.1rem;font-size:.86rem;font-weight:600}
.logo-hint i{color:var(--mint);margin-right:.3rem}

.logo-main{display:grid;grid-template-columns:.86fr 1.14fr;gap:0;border:1px solid var(--line);border-top:none;border-radius:0 0 var(--r-md) var(--r-md);overflow:hidden;background:var(--surface);box-shadow:var(--shadow-sm)}
.logo-editor-col{display:flex;flex-direction:column;min-width:0;border-right:1px solid var(--line)}
.logo-editor{flex:1 1 auto;min-height:clamp(280px,48vh,560px);width:100%;resize:none;border:none;outline:none;background:var(--surface-2);color:var(--ink);font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-size:.94rem;line-height:1.6;padding:1rem 1.1rem;tab-size:2}
.logo-status{padding:.55rem 1.1rem;font-family:var(--display);font-weight:700;font-size:.9rem;background:var(--bg-blue);border-top:1px solid var(--line);color:var(--brand-deep)}
.logo-status.ok{background:var(--bg-mint);color:#0e8f78}
.logo-status.error{background:#ffe4e0;color:#c23324}
[data-theme="dark"] .logo-status.error{background:#3a1a18;color:#ff8a7a}
.logo-status.muted{background:var(--bg);color:var(--muted)}
.logo-console{max-height:130px;min-height:36px;overflow-y:auto;border-top:1px solid var(--line);padding:.5rem 1.1rem;font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-size:.85rem;color:var(--ink-soft)}
.logo-console-line{padding:.15rem 0;border-bottom:1px dashed var(--line);white-space:pre-wrap}
.logo-console-line:last-child{border-bottom:none}
.logo-console-cmd{color:var(--brand-deep);font-weight:700}
[data-theme="dark"] .logo-console-cmd{color:var(--brand)}
.logo-console-err{color:#c23324}
[data-theme="dark"] .logo-console-err{color:#ff8a7a}
.logo-console-ok2{color:#0e8f78}
[data-theme="dark"] .logo-console-ok2{color:var(--mint)}
.logo-console-muted2{color:var(--muted);font-style:italic}

/* instant-mode toggle switch */
.logo-switch{display:inline-flex;align-items:center;gap:.55rem;cursor:pointer;user-select:none;font-family:var(--display);font-weight:700;font-size:.88rem;color:var(--ink-soft)}
.logo-switch input{position:absolute;opacity:0;width:1px;height:1px}
.logo-switch-track{position:relative;width:42px;height:24px;border-radius:var(--r-pill);background:var(--line-2);transition:background .2s;flex:0 0 auto}
.logo-switch-thumb{position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:var(--shadow-sm);transition:transform .2s}
.logo-switch input:checked + .logo-switch-track{background:var(--cta)}
.logo-switch input:checked + .logo-switch-track .logo-switch-thumb{transform:translateX(18px)}
.logo-switch input:focus-visible + .logo-switch-track{outline:2px solid var(--brand);outline-offset:2px}
.logo-switch:hover .logo-switch-label{color:var(--ink)}

.logo-app.logo-instant .logo-editor{background:color-mix(in srgb,var(--cta) 7%,var(--surface-2));border-left:3px solid var(--cta);flex:0 0 auto;min-height:64px;max-height:140px}
.logo-app.logo-instant .logo-editor-col{min-height:0}
.logo-app.logo-instant .logo-console{flex:1 1 auto;max-height:none}

.logo-stage-col{position:relative;background:#eef3fb}
[data-theme="dark"] .logo-stage-col{background:#0a1120}
.logo-stage-wrap{position:relative;width:100%;aspect-ratio:4/3;background:#fff;transition:background .3s}
[data-theme="dark"] .logo-stage-wrap{background:#12192c}
.logo-stage-wrap canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.logo-stage-wrap.logo-shake{animation:logoShake .4s}
@keyframes logoShake{10%,90%{transform:translateX(-1px)}20%,80%{transform:translateX(2px)}30%,50%,70%{transform:translateX(-4px)}40%,60%{transform:translateX(4px)}}

.logo-help-panel{position:fixed;top:0;right:0;bottom:0;width:min(380px,100%);background:var(--surface);border-left:1px solid var(--line);box-shadow:var(--shadow-lg);z-index:200;display:flex;flex-direction:column;transform:translateX(100%);transition:transform .3s ease}
.logo-help-panel.open{transform:translateX(0)}
.logo-help-head{display:flex;align-items:center;justify-content:space-between;padding:1.1rem 1.2rem;border-bottom:1px solid var(--line)}
.logo-help-head h3{font-size:1.15rem;display:flex;align-items:center;gap:.5rem}
.logo-help-search{margin:.9rem 1.2rem 0;padding:.6rem .9rem;border-radius:var(--r-pill);border:1.5px solid var(--line-2);background:var(--bg);color:var(--ink);font-family:var(--body);font-size:.9rem}
.logo-help-search:focus{outline:none;border-color:var(--brand)}
.logo-help-list{flex:1 1 auto;overflow-y:auto;padding:1rem 1.2rem 2rem}
.logo-help-cat{font-family:var(--display);font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--brand);margin:1.3rem 0 .6rem}
.logo-help-cat:first-child{margin-top:0}
.logo-help-item{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:.8rem .9rem;margin-bottom:.7rem}
.logo-help-name{font-family:var(--display);font-weight:800;font-size:.94rem;margin-bottom:.25rem}
.logo-help-syntax{display:block;font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-size:.78rem;color:var(--cta-deep);background:color-mix(in srgb,var(--cta) 12%,transparent);padding:.3rem .55rem;border-radius:8px;margin-bottom:.4rem;white-space:pre-wrap;word-break:break-word}
.logo-help-item p{font-size:.86rem;margin-bottom:.5rem}
.logo-try-btn{width:100%;justify-content:center}

@media(max-width:900px){
  .logo-main{grid-template-columns:1fr}
  .logo-editor-col{border-right:none;border-bottom:1px solid var(--line)}
  .logo-editor{min-height:220px}
  .logo-stage-wrap{aspect-ratio:1/1}
  .logo-toolbar{flex-direction:column;align-items:stretch}
  .logo-toolbar-group{justify-content:space-between}
}
@media(max-width:560px){
  .logo-field select{max-width:110px}
  .logo-icon-btn span{display:none}
}

/* ================= PAGE SUB-NAV BAR ================= */
:root{--subnav-h:0px}
[data-navlabel]{scroll-margin-top:calc(var(--header-h) + var(--subnav-h) + 14px)}
.subnav{position:fixed;top:var(--header-h);left:0;right:0;z-index:85;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm);transform:translateY(-110%);opacity:0;transition:transform .3s ease,opacity .3s ease;pointer-events:none}
.subnav.show{transform:translateY(0);opacity:1;pointer-events:auto}
.subnav-inner{max-width:var(--maxw);margin-inline:auto;display:flex;align-items:center;gap:.4rem;padding:.55rem 1.2rem;overflow-x:auto;scrollbar-width:none}
.subnav-inner::-webkit-scrollbar{display:none}
.subnav a{flex:none;display:inline-flex;align-items:center;gap:.4rem;padding:.5rem .95rem;border-radius:var(--r-pill);color:var(--ink-soft);font-weight:700;font-size:.84rem;text-decoration:none;white-space:nowrap;transition:.15s}
.subnav a:hover{background:var(--bg);color:var(--ink)}
.subnav a.active{background:color-mix(in srgb,var(--brand) 16%,transparent);color:var(--brand)}
.subnav a i{font-size:.8rem}
@media(max-width:640px){
  .subnav-inner{padding:.5rem .9rem;gap:.3rem}
  .subnav a{padding:.45rem .8rem;font-size:.8rem}
}

/* ================= PYTHON COMPILER PAGE =================
   Additive only — every selector below is scoped to a class that
   only exists on resources/online-python-interpreter.html (.pyc-*,
   .confirm-*) or combines one of those with a shared state class
   (e.g. .logo-instant). Nothing here redefines a pre-existing
   .logo-* — only selector rule touches the Logo interpreter page. */
.pyc-editor{position:relative;overflow:hidden;background:var(--surface)}
.pyc-main{transition:grid-template-columns .4s cubic-bezier(.4,0,.2,1)}
.pyc-editor-col{transition:opacity .25s ease}
.logo-app.logo-instant .pyc-main{grid-template-columns:0fr 1fr}
.logo-app.logo-instant .pyc-editor-col{opacity:0;pointer-events:none;overflow:hidden}
.logo-app.logo-instant .pyc-output-head{background:color-mix(in srgb,var(--cta) 10%,var(--surface))}

.pyc-output-wrap{display:flex;flex-direction:column;height:100%}
.pyc-output-head{display:flex;align-items:center;justify-content:space-between;gap:.6rem;padding:.7rem 1.1rem;border-bottom:1px solid var(--line);background:var(--surface);font-family:var(--display);font-weight:700;font-size:.88rem;color:var(--ink-soft)}
.pyc-output-head i{color:var(--brand);margin-right:.35rem}
.pyc-status{font-family:var(--body);font-weight:700;font-size:.76rem;padding:.28rem .75rem;border-radius:var(--r-pill);background:var(--bg-blue);color:var(--brand-deep)}
.pyc-status.ok{background:var(--bg-mint);color:#0e8f78}
.pyc-status.error{background:#ffe4e0;color:#c23324}
[data-theme="dark"] .pyc-status.error{background:#3a1b1b;color:#ff8f83}
.pyc-status.loading{background:var(--bg-blue);color:var(--brand-deep)}
.pyc-status.muted{background:var(--bg);color:var(--muted)}
.pyc-output{flex:1 1 auto;margin:0;padding:1rem 1.1rem;overflow:auto;font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-size:.9rem;line-height:1.65;color:var(--ink);white-space:pre-wrap;word-break:break-word;background:var(--surface-2)}
.pyc-stderr,.pyc-error{color:#c23324}
[data-theme="dark"] .pyc-stderr,[data-theme="dark"] .pyc-error{color:#ff8f83}
.pyc-muted{color:var(--muted);font-style:italic}
.pyc-stdin-wrap{border-top:1px solid var(--line);padding:.8rem 1.1rem;background:var(--bg)}
.pyc-stdin-wrap label{display:block;font-family:var(--display);font-weight:700;font-size:.76rem;color:var(--ink-soft);margin-bottom:.5rem}
.pyc-stdin-wrap label code{font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;background:color-mix(in srgb,var(--brand) 12%,transparent);padding:.1rem .35rem;border-radius:6px}
.pyc-stdin{width:100%;min-height:64px;resize:vertical;border:1.5px solid var(--line-2);border-radius:var(--r);background:var(--surface);color:var(--ink);font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-size:.85rem;padding:.55rem .75rem}
.pyc-stdin:focus{outline:none;border-color:var(--brand)}

.pyc-repl-line{display:block;animation:pycLineIn .28s cubic-bezier(.2,.8,.3,1) both}
.pyc-repl-prompt{color:var(--brand);font-weight:700;-webkit-user-select:none;user-select:none}
[data-theme="dark"] .pyc-repl-prompt{color:var(--brand-deep)}
.pyc-repl-cont{color:var(--muted);font-weight:700;-webkit-user-select:none;user-select:none}
@keyframes pycLineIn{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
.pyc-repl-inputrow{display:flex;align-items:center;gap:.6rem;padding:.7rem 1.1rem;border-top:1px solid var(--line);background:var(--surface-2);animation:pycLineIn .3s cubic-bezier(.2,.8,.3,1) both}
.pyc-repl-inputrow .pyc-repl-prompt,.pyc-repl-inputrow .pyc-repl-cont{font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-size:.9rem}
.pyc-repl-input{flex:1 1 auto;min-width:0;border:none;outline:none;background:transparent;color:var(--ink);font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-size:.9rem;caret-color:var(--brand)}
.pyc-output-wrap.pyc-flash-ok{animation:pycFlashOk .6s ease}
@keyframes pycFlashOk{0%{box-shadow:inset 0 0 0 2px color-mix(in srgb,var(--mint) 55%,transparent)}100%{box-shadow:inset 0 0 0 2px transparent}}
.pyc-output-wrap.logo-shake{animation:logoShake .4s}

.confirm-overlay{position:fixed;inset:0;background:rgba(10,14,26,.55);display:flex;align-items:center;justify-content:center;z-index:400;padding:1rem;opacity:0;pointer-events:none;transition:opacity .2s ease}
.confirm-overlay.open{opacity:1;pointer-events:auto}
.confirm-box{background:var(--surface);border-radius:var(--r-lg);padding:1.7rem 1.8rem;max-width:360px;width:100%;box-shadow:var(--shadow-lg);text-align:center;transform:scale(.85) translateY(12px);opacity:0;transition:transform .25s cubic-bezier(.34,1.56,.64,1),opacity .2s ease}
.confirm-overlay.open .confirm-box{transform:scale(1) translateY(0);opacity:1}
.confirm-icon{width:52px;height:52px;border-radius:50%;background:color-mix(in srgb,var(--cta) 16%,transparent);color:var(--cta-deep);display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin:0 auto 1rem}
.confirm-box h4{font-family:var(--display);font-size:1.15rem;margin-bottom:.5rem}
.confirm-box p{font-size:.9rem;color:var(--ink-soft);margin-bottom:1.3rem}
.confirm-actions{display:flex;gap:.7rem;justify-content:center}

/* ============================================================
   BOOK STORE
   ============================================================ */
.bgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem}
@media(max-width:900px){.bgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.bgrid{grid-template-columns:1fr}}
.bcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;transition:transform .26s,box-shadow .26s}
.bcard:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.bcover{position:relative;aspect-ratio:4/3}
.bcover svg{width:100%;height:100%}
.bcover .tag{position:absolute;top:1rem;right:1rem;font-family:var(--display);font-size:.72rem;font-weight:700;letter-spacing:.03em;padding:.3rem .7rem;border-radius:var(--r-pill);background:#25d366;color:#053218;z-index:2}
.bcard-body{padding:1.5rem;display:flex;flex-direction:column;flex:1 1 auto}
.bcard-body h3{margin-bottom:.35rem}
.bcard-body .bauthor{font-weight:700;color:var(--brand);font-size:.92rem;margin-bottom:.7rem}
.bcard-body p{font-size:.96rem}
.bcard-body .pricing-pill{margin:0 0 .8rem;font-size:.82rem;padding:.4rem .85rem}
.bmeta{margin:1rem 0;display:flex;flex-direction:column;gap:.5rem}
.bmeta li{display:flex;gap:.6rem;align-items:baseline;font-size:.88rem;color:var(--ink-soft)}
.bmeta li i{color:var(--mint);width:1em}
.bmeta li b{color:var(--ink);font-weight:700}
.bcard-body .clink{margin-top:auto;padding-top:.4rem}

/* book landing page */
.book-layout{display:grid;grid-template-columns:1.6fr 1fr;gap:2.2rem;align-items:start}
.pdf-toolbar{display:flex;flex-wrap:wrap;gap:.7rem;align-items:center;justify-content:space-between;margin-bottom:1rem}
.pdf-frame{width:100%;height:82vh;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface-2);box-shadow:var(--shadow-lg)}
.pdf-frame-fallback{padding:2.4rem 1.5rem;text-align:center}
.book-sidebar{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.6rem;position:sticky;top:calc(var(--header-h) + 1rem)}
.book-sidebar .bcover{border-radius:var(--r-md);margin-bottom:1.3rem;box-shadow:var(--shadow)}
.book-sidebar .btn-row{flex-direction:column}
.book-sidebar .btn-row .btn{width:100%}
.book-license{margin-top:1.3rem;padding-top:1.1rem;border-top:1px solid var(--line);font-size:.82rem;color:var(--muted)}

/* distraction-free in-site PDF reader */
html.reader-html,.reader-html body{height:100%;overflow:hidden}
.reader-body{margin:0;height:100vh;display:flex;flex-direction:column;background:var(--bg)}
.reader-header{flex:none;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.6rem 1.1rem;background:var(--surface);border-bottom:1px solid var(--line)}
.reader-header .brand-logo img{height:34px;width:auto}
.reader-title{flex:1 1 auto;min-width:0;text-align:center;font-family:var(--display);font-weight:700;font-size:.95rem;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:0 1rem}
.reader-close{flex:none}
.reader-pdf{flex:1 1 auto;width:100%;border:none;background:var(--surface-2)}
@media(max-width:560px){
  .reader-title{display:none}
  .reader-header .brand-logo img{height:28px}
}

@media(max-width:900px){
  .book-layout{grid-template-columns:1fr}
  .book-sidebar{position:static}
  .pdf-frame{height:70vh}
  .pyc-output{min-height:260px}
  .logo-app.logo-instant .pyc-main{grid-template-columns:1fr}
  .logo-app.logo-instant .pyc-editor-col{display:none}
}