/* ============================================================
   Askera — design system al site-ului de prezentare
   Dark + Light (theme-aware prin tokeni). Gradient mov→albastru.
   ============================================================ */

:root {
   /* accent (identic pe ambele teme) */
   --pur: #8b5cf6;
   --blu: #3b82f6;
   --grad:   linear-gradient(135deg,#a78bfa,#60a5fa);
   --grad-s: linear-gradient(135deg,#8b5cf6,#3b82f6);
   --ok: #10b981;
   --no: #f43f5e;

   /* dark (implicit) */
   --bg:   #08080f;
   --bg2:  #0d0d1a;
   --bg3:  #101020;
   --card:   rgba(255,255,255,.025);
   --card-2: rgba(255,255,255,.045);
   --bd:   rgba(255,255,255,.08);
   --bd2:  rgba(255,255,255,.14);
   --tx:   #f2f2fb;
   --tx2:  #a9a9c8;
   --tx3:  #7a7a9c;
   --hover: rgba(255,255,255,.06);
   --wash:  rgba(255,255,255,.04);
   --input-bg: rgba(255,255,255,.03);
   --header-bg: rgba(8,8,15,.55);
   --header-bg-solid: rgba(8,8,15,.85);
   --mnav-bg: rgba(10,10,20,.98);
   --glow: .22;
   --shadow: 0 8px 30px -10px rgba(0,0,0,.5);
   color-scheme: dark;

   --nav-h: 68px;
   --radius: 18px;
   --radius-s: 12px;
   --maxw: 1160px;
   --ease: cubic-bezier(.22,.61,.36,1);
   --font: system-ui,-apple-system,"Segoe UI Variable Text","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

:root[data-theme="light"] {
   --grad:   linear-gradient(135deg,#7c3aed,#2563eb);
   --grad-s: linear-gradient(135deg,#7c3aed,#2563eb);
   --bg:   #ffffff;
   --bg2:  #f7f8fc;
   --bg3:  #eef1f8;
   --card:   rgba(16,20,50,.022);
   --card-2: rgba(16,20,50,.045);
   --bd:   rgba(16,20,50,.10);
   --bd2:  rgba(16,20,50,.17);
   --tx:   #0e1020;
   --tx2:  #414867;
   --tx3:  #6b7192;
   --hover: rgba(16,20,50,.05);
   --wash:  rgba(16,20,50,.035);
   --input-bg: rgba(16,20,50,.03);
   --header-bg: rgba(255,255,255,.72);
   --header-bg-solid: rgba(255,255,255,.92);
   --mnav-bg: rgba(255,255,255,.98);
   --glow: .14;
   --shadow: 0 10px 30px -12px rgba(16,20,50,.18);
   color-scheme: light;
}

*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
   margin: 0; font-family: var(--font);
   background: var(--bg); color: var(--tx);
   line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden;
   transition: background .3s var(--ease), color .3s var(--ease);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

body::before {
   content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
   background:
      radial-gradient(60rem 40rem at 78% -10%, rgba(139,92,246,var(--glow)), transparent 60%),
      radial-gradient(50rem 40rem at 8% 3%, rgba(59,130,246,calc(var(--glow) * .8)), transparent 55%);
}

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 24px; }
.container.narrow { max-width: 820px; }

/* typography */
h1,h2,h3,h4 { margin: 0 0 .5em; line-height: 1.12; font-weight: 700; letter-spacing: -.02em; }
h1 { font-size: clamp(2.4rem, 6vw, 4.1rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.7rem); }
h3 { font-size: 1.22rem; }
p  { margin: 0 0 1rem; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.muted { color: var(--tx3); }
.lead { font-size: clamp(1.05rem, 2vw, 1.28rem); color: var(--tx2); max-width: 46ch; }
.prose { color: var(--tx2); font-size: 1.06rem; max-width: 68ch; }

/* icons */
.icon { width: 24px; height: 24px; flex: none; }
.icon-sm { width: 18px; height: 18px; flex: none; vertical-align: -3px; }
.ok { color: var(--ok); } .no { color: var(--no); }

/* buttons */
.btn {
   display: inline-flex; align-items: center; gap: .5rem; justify-content: center;
   font: inherit; font-weight: 600; cursor: pointer; border: 1px solid transparent;
   padding: .7rem 1.3rem; border-radius: 999px;
   transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s, border-color .2s;
   white-space: nowrap;
}
.btn-lg { padding: .9rem 1.7rem; font-size: 1.02rem; }
.btn-primary { background: var(--grad-s); color: #fff; box-shadow: 0 8px 30px -8px rgba(124,92,246,.55); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px -8px rgba(124,92,246,.7); }
.btn-ghost { background: var(--wash); color: var(--tx); border-color: var(--bd2); }
.btn-ghost:hover { background: var(--hover); transform: translateY(-2px); }
.btn .icon-sm { transition: transform .2s var(--ease); }
.btn:hover .icon-sm { transform: translateX(3px); }

/* header */
.skip-link { position: absolute; left: -999px; top: 0; background: var(--pur); color:#fff; padding:.6rem 1rem; z-index: 200; }
.skip-link:focus { left: 0; }

.site-header {
   position: fixed; inset: 0 0 auto 0; height: var(--nav-h); z-index: 100;
   background: var(--header-bg); backdrop-filter: blur(14px);
   border-bottom: 1px solid var(--bd); transition: background .3s, border-color .3s;
}
.site-header.scrolled { background: var(--header-bg-solid); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); gap: 1rem; }
.brand img { height: 30px; width: auto; }
.brand .logo-light { display: none; }
:root[data-theme="light"] .brand .logo-dark { display: none; }
:root[data-theme="light"] .brand .logo-light { display: block; }
.main-nav { display: flex; align-items: center; gap: .3rem; }
.nav-link { padding: .5rem .8rem; border-radius: 8px; color: var(--tx2); font-weight: 500; font-size: .95rem; transition: color .2s, background .2s; }
.nav-link:hover { color: var(--tx); background: var(--hover); }
.nav-link.active { color: var(--tx); }
.nav-link.active::after { content:""; display:block; height:2px; margin-top:3px; border-radius:2px; background: var(--grad-s); }
.nav-cta { margin-left: .3rem; }
.lang-switch { display: flex; gap: 2px; margin-left: .5rem; padding: 3px; background: var(--wash); border: 1px solid var(--bd); border-radius: 999px; }
.lang { padding: .25rem .55rem; border-radius: 999px; font-size: .82rem; font-weight: 600; color: var(--tx3); transition: color .2s, background .2s; }
.lang:hover { color: var(--tx); }
.lang.active { color: #fff; background: var(--grad-s); }
.theme-toggle { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; margin-left: .5rem; border-radius: 10px; background: var(--wash); border: 1px solid var(--bd); color: var(--tx2); cursor: pointer; transition: color .2s, background .2s; }
.theme-toggle:hover { color: var(--tx); background: var(--hover); }
.theme-toggle .moon { display: none; }
:root[data-theme="light"] .theme-toggle .sun { display: none; }
:root[data-theme="light"] .theme-toggle .moon { display: block; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 42px; height: 42px; align-items: center; justify-content: center; background: var(--wash); border: 1px solid var(--bd); border-radius: 10px; cursor: pointer; }
.nav-toggle span { width: 20px; height: 2px; background: var(--tx); border-radius: 2px; transition: .25s; }

main { padding-top: var(--nav-h); }

/* hero */
.hero { position: relative; padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(3rem,7vw,5.5rem); overflow: hidden; }
.hero-inner-page { padding-bottom: clamp(2rem,5vw,3.5rem); }
.hero.slim { padding-bottom: 1rem; }
.hero-glow { position: absolute; top: -30%; left: 50%; translate: -50% 0; width: 70rem; height: 40rem; background: radial-gradient(closest-side, rgba(124,92,246,calc(var(--glow) + .04)), transparent 70%); pointer-events: none; }
.hero-copy { position: relative; max-width: 780px; }
.narrow-hero { max-width: 720px; }
.badge-pill { display: inline-flex; align-items: center; gap: .45rem; font-size: .84rem; font-weight: 600; color: var(--tx2); padding: .4rem .85rem; border: 1px solid var(--bd2); border-radius: 999px; background: var(--wash); margin-bottom: 1.2rem; }
.badge-pill .icon-sm { color: var(--pur); }
.badge-alarm { color: var(--no); border-color: color-mix(in srgb, var(--no) 40%, transparent); background: color-mix(in srgb, var(--no) 8%, transparent); }
.badge-alarm .icon-sm { color: var(--no); }
.hero h1 { margin-bottom: .4em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; align-items: center; }
.free-flag { display: inline-flex; align-items: center; gap: .5rem; font-weight: 700; color: var(--ok); font-size: .95rem; }
.free-flag .icon-sm { color: var(--ok); }
.hero-stats { display: flex; flex-wrap: wrap; gap: 2.4rem; margin-top: 2.8rem; padding-top: 1.8rem; border-top: 1px solid var(--bd); }
.stat { display: flex; flex-direction: column; }
.stat-val { font-size: 1.9rem; font-weight: 700; letter-spacing: -.02em; }
.stat-lbl { font-size: .84rem; color: var(--tx3); max-width: 18ch; }

/* hero two-column + visual */
.hero-inner.two-col { display: grid; grid-template-columns: 1.05fr .95fr; gap: 3rem; align-items: center; }
.hero-visual { position: relative; }
.hv-card {
   position: relative; z-index: 2; background: linear-gradient(180deg, var(--card-2), var(--card));
   border: 1px solid var(--bd2); border-radius: 20px; padding: 1.3rem; box-shadow: var(--shadow);
   backdrop-filter: blur(6px);
}
.hv-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.hv-app { display: inline-flex; align-items: center; gap: .5rem; font-weight: 700; font-size: .95rem; }
.hv-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--grad-s); }
.hv-live { font-size: .72rem; font-weight: 700; letter-spacing: .08em; color: var(--ok); border: 1px solid color-mix(in srgb, var(--ok) 35%, transparent); background: color-mix(in srgb, var(--ok) 10%, transparent); padding: .2rem .5rem; border-radius: 999px; }
.hv-q { display: flex; align-items: flex-start; gap: .5rem; background: var(--wash); border: 1px solid var(--bd); border-radius: 12px; padding: .7rem .85rem; font-size: .92rem; color: var(--tx2); margin-bottom: .9rem; }
.hv-q .icon-sm { color: var(--pur); margin-top: 2px; }
.hv-answer { border: 1px solid var(--bd); border-radius: 14px; padding: 1rem; display: flex; flex-direction: column; }
.hv-alabel { font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; color: var(--tx3); }
.hv-aval { font-size: 2rem; font-weight: 800; letter-spacing: -.02em; margin: .1rem 0 .8rem; }
.hv-bars { display: flex; align-items: flex-end; gap: 6px; height: 68px; margin-bottom: .8rem; }
.hv-bars span { flex: 1; background: var(--grad-s); border-radius: 5px 5px 0 0; opacity: .85; animation: hvgrow .8s var(--ease) both; }
.hv-bars span:nth-child(6) { opacity: 1; }
@keyframes hvgrow { from { transform: scaleY(.2); transform-origin: bottom; opacity: 0; } }
.hv-asub { display: inline-flex; align-items: center; gap: .4rem; font-size: .82rem; color: var(--tx2); }
.hv-chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }
.hv-chip { font-size: .78rem; font-weight: 600; color: var(--tx2); border: 1px solid var(--bd2); border-radius: 999px; padding: .28rem .7rem; background: var(--wash); }
.hv-float { position: absolute; z-index: 3; display: inline-flex; align-items: center; gap: .4rem; font-size: .82rem; font-weight: 600; color: var(--tx); background: var(--mnav-bg); border: 1px solid var(--bd2); border-radius: 999px; padding: .4rem .8rem; box-shadow: var(--shadow); }
.hv-float .icon-sm { color: var(--pur); }
.hv-f1 { top: -14px; right: 22px; animation: hvfloat 4s ease-in-out infinite; }
.hv-f2 { bottom: -14px; left: 18px; animation: hvfloat 4.6s ease-in-out infinite .6s; }
@keyframes hvfloat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }

@media (max-width: 900px) {
   .hero-inner.two-col { grid-template-columns: 1fr; gap: 2.4rem; }
   .hero-visual { max-width: 460px; }
}

/* sections */
.section { padding: clamp(3.5rem, 8vw, 6rem) 0; }
.section.alt { background: linear-gradient(180deg, var(--bg2), var(--bg)); border-block: 1px solid var(--bd); }
.section-head { max-width: 660px; margin-bottom: 2.6rem; }
.section-lead { color: var(--tx2); font-size: 1.08rem; }

.proof { padding: 1.6rem 0 .4rem; }
.proof-title { text-align: center; color: var(--tx3); font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 1rem; }
.proof-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: .7rem 1.8rem; }
.proof-list li { display: inline-flex; align-items: center; gap: .5rem; color: var(--tx2); font-size: .95rem; font-weight: 500; }

.card-plain, .card-dir, .feature, .pillar, .quote, .contact-card, .gb {
   background: var(--card); border: 1px solid var(--bd); border-radius: var(--radius); padding: 1.6rem;
   height: 100%; transition: transform .25s var(--ease), border-color .25s, background .25s, box-shadow .25s;
}
.card-plain h3, .card-dir h3 { margin-bottom: .5rem; }
.card-plain p, .card-dir p, .feature p, .pillar p { color: var(--tx2); margin-bottom: 0; }
.card-dir:hover, .feature:hover, .pillar:hover { transform: translateY(-4px); border-color: var(--bd2); background: var(--card-2); box-shadow: var(--shadow); }
.card-icon { display: inline-flex; padding: .7rem; border-radius: 14px; background: color-mix(in srgb, var(--pur) 12%, transparent); color: var(--pur); margin-bottom: 1rem; border: 1px solid color-mix(in srgb, var(--pur) 22%, transparent); }
.card-icon.sm { padding: .55rem; border-radius: 11px; }
.ticks { list-style: none; margin: 1rem 0 1.2rem; padding: 0; display: grid; gap: .5rem; }
.ticks li { display: flex; align-items: flex-start; gap: .55rem; color: var(--tx2); font-size: .95rem; }
.card-link { display: inline-flex; align-items: center; gap: .4rem; color: var(--pur); font-weight: 600; }
.card-link:hover { color: var(--tx); }
.card-link .icon-sm { transition: transform .2s var(--ease); }
.card-link:hover .icon-sm { transform: translateX(3px); }

.step { text-align: left; }
.step-n { font-size: 2.4rem; font-weight: 800; display: block; margin-bottom: .3rem; }
.step p { color: var(--tx2); }

.gb h3 { display: flex; align-items: center; gap: .6rem; margin-bottom: 1.1rem; }
.gb ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .7rem; }
.gb li { display: flex; align-items: flex-start; gap: .6rem; color: var(--tx2); }
.gb.good { border-color: color-mix(in srgb, var(--ok) 30%, transparent); background: linear-gradient(180deg, color-mix(in srgb, var(--ok) 7%, transparent), transparent); }
.gb.good h3 { color: var(--ok); }
.gb.bad { border-color: color-mix(in srgb, var(--no) 26%, transparent); background: linear-gradient(180deg, color-mix(in srgb, var(--no) 6%, transparent), transparent); }
.gb.bad h3 { color: var(--no); }

.feature { display: flex; gap: 1rem; align-items: flex-start; }
.feature h3 { margin-bottom: .35rem; }
.pillar { text-align: left; }

.big-ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 1rem; }
.big-ticks li { display: flex; align-items: flex-start; gap: .8rem; font-size: 1.1rem; color: var(--tx); }
.big-ticks .icon-sm { margin-top: 4px; }

.quote p { font-size: 1.05rem; color: var(--tx); }
.quote footer { display: flex; flex-direction: column; margin-top: 1rem; }
.quote footer strong { color: var(--tx); }
.quote footer span { color: var(--tx3); font-size: .9rem; }

.faq-list { display: grid; gap: .8rem; }
.faq-item { background: var(--card); border: 1px solid var(--bd); border-radius: var(--radius-s); overflow: hidden; }
.faq-item summary { list-style: none; cursor: pointer; padding: 1.1rem 1.3rem; font-weight: 600; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item .chev { color: var(--tx3); transition: transform .25s var(--ease); rotate: 90deg; }
.faq-item[open] .chev { rotate: -90deg; }
.faq-a { padding: 0 1.3rem 1.2rem; color: var(--tx2); }
.faq-a p { margin: 0; }

.legal h2 { font-size: 1.35rem; margin-top: 2rem; }
.legal h2:first-child { margin-top: 0; }

/* free-evaluation band */
.cta-band { position: relative; text-align: center; padding: clamp(3.5rem,8vw,5.5rem) 0; background: radial-gradient(40rem 20rem at 50% 120%, rgba(124,92,246,calc(var(--glow) + .05)), transparent 60%), var(--bg2); border-top: 1px solid var(--bd); }
.cta-band .free-badge { display: inline-flex; align-items: center; gap: .5rem; font-weight: 700; color: var(--ok); border: 1px solid color-mix(in srgb, var(--ok) 35%, transparent); background: color-mix(in srgb, var(--ok) 8%, transparent); padding: .45rem 1rem; border-radius: 999px; margin-bottom: 1.2rem; }
.cta-band h2 { max-width: 22ch; margin-inline: auto; }
.cta-band p { color: var(--tx2); max-width: 54ch; margin: .5rem auto 1.8rem; }
.cta-sub { font-size: .9rem; color: var(--tx3); margin-top: 1rem; }

/* Academia */
.chapter-head { max-width: 720px; margin-bottom: 2.4rem; }
.chapter-kicker { display: inline-flex; align-items: center; gap: .6rem; font-size: 1.4rem; font-weight: 800; margin-bottom: .6rem; }
.chapter-kicker .card-icon { margin-bottom: 0; }
.concept { background: var(--card); border: 1px solid var(--bd); border-radius: var(--radius-s); padding: 1.3rem; height: 100%; transition: transform .25s var(--ease), border-color .25s, background .25s; }
.concept:hover { transform: translateY(-3px); border-color: var(--bd2); background: var(--card-2); }
.concept h3 { font-size: 1.02rem; margin-bottom: .5rem; }
.concept p { color: var(--tx2); margin: 0; font-size: .95rem; }
.takeaway { display: flex; align-items: flex-start; gap: .8rem; margin-top: 2rem; padding: 1.2rem 1.4rem; border-radius: var(--radius-s);
   border: 1px solid color-mix(in srgb, var(--pur) 30%, transparent);
   background: linear-gradient(180deg, color-mix(in srgb, var(--pur) 9%, transparent), transparent); }
.takeaway .icon-sm { color: var(--pur); margin-top: 3px; flex: none; }
.takeaway p { margin: 0; font-size: 1.05rem; font-weight: 500; color: var(--tx); }
.gloss-item { display: flex; flex-direction: column; gap: .25rem; background: var(--card); border: 1px solid var(--bd); border-radius: var(--radius-s); padding: 1rem 1.2rem; height: 100%; }
.gloss-term { font-weight: 700; color: var(--pur); }
.gloss-def { color: var(--tx2); font-size: .95rem; }

/* contact */
.contact-grid { align-items: start; }
.contact-form .field { margin-bottom: 1.1rem; }
.contact-form label { display: block; font-size: .9rem; color: var(--tx2); margin-bottom: .4rem; }
.contact-form input, .contact-form textarea {
   width: 100%; font: inherit; color: var(--tx); background: var(--input-bg);
   border: 1px solid var(--bd2); border-radius: 12px; padding: .8rem 1rem; transition: border-color .2s, background .2s;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--pur); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-note { font-size: .82rem; color: var(--tx3); margin-top: .9rem; }
.alert-ok, .alert-err { display: flex; align-items: center; gap: .6rem; padding: .9rem 1.1rem; border-radius: 12px; margin-bottom: 1.4rem; font-weight: 500; }
.alert-ok { background: color-mix(in srgb, var(--ok) 12%, transparent); border: 1px solid color-mix(in srgb, var(--ok) 34%, transparent); color: var(--ok); }
.alert-err { background: color-mix(in srgb, var(--no) 10%, transparent); border: 1px solid color-mix(in srgb, var(--no) 32%, transparent); color: var(--no); }
.contact-info { list-style: none; margin: 0 0 1.4rem; padding: 0; display: grid; gap: .8rem; }
.contact-info li { display: flex; align-items: center; gap: .7rem; color: var(--tx2); }
.contact-info .icon-sm { color: var(--pur); }
.reasons { margin-top: 1rem; }

/* footer */
.site-footer { background: var(--bg2); border-top: 1px solid var(--bd); padding: 3.5rem 0 1.5rem; margin-top: 2rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 2rem; }
.footer-brand img { height: 30px; margin-bottom: 1rem; }
.footer-brand .logo-light { display: none; }
:root[data-theme="light"] .footer-brand .logo-dark { display: none; }
:root[data-theme="light"] .footer-brand .logo-light { display: block; }
.footer-brand p { color: var(--tx3); max-width: 32ch; }
.footer-status { display: inline-flex; align-items: center; gap: .5rem; color: var(--tx2); font-size: .9rem; }
.footer-status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ok) 20%, transparent); }
.footer-col h4 { font-size: .85rem; text-transform: uppercase; letter-spacing: .1em; color: var(--tx3); margin-bottom: 1rem; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; }
.footer-col a, .footer-col li { color: var(--tx2); font-size: .96rem; }
.footer-col a:hover { color: var(--tx); }
.footer-anpc { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 2.2rem; padding-top: 1.4rem; border-top: 1px solid var(--bd); }
.footer-anpc img { display: block; border-radius: 7px; transition: transform .2s var(--ease); }
.footer-anpc a:hover img { transform: translateY(-2px); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-top: 1.2rem; color: var(--tx3); font-size: .88rem; flex-wrap: wrap; }
.admin-link { color: var(--tx3); }
.admin-link:hover { color: var(--tx2); }

.to-top { position: fixed; right: 20px; bottom: 20px; width: 44px; height: 44px; display: none; align-items: center; justify-content: center; background: var(--grad-s); color: #fff; border-radius: 12px; font-size: 1.3rem; z-index: 90; box-shadow: 0 8px 24px -8px rgba(124,92,246,.6); transition: transform .2s var(--ease); }
.to-top.show { display: flex; }
.to-top:hover { transform: translateY(-3px); }

/* responsive */
@media (max-width: 980px) {
   .footer-grid { grid-template-columns: 1fr 1fr; }
   .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 860px) {
   .nav-toggle { display: flex; order: 3; }
   .theme-toggle { order: 2; }
   .main-nav {
      position: fixed; inset: var(--nav-h) 0 auto 0; flex-direction: column; align-items: stretch;
      gap: .25rem; padding: 1rem 1.2rem 1.6rem; background: var(--mnav-bg); backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--bd); transform: translateY(-8px); opacity: 0; pointer-events: none;
      transition: transform .25s var(--ease), opacity .25s;
   }
   .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
   .nav-link { padding: .8rem 1rem; }
   .nav-link.active::after { display: none; }
   .nav-cta { margin: .6rem 0 .3rem; }
   .lang-switch { margin: .4rem 0 0; align-self: flex-start; }
   .grid2 { grid-template-columns: 1fr; }
   .hero-stats { gap: 1.4rem 2rem; }
}
@media (max-width: 560px) {
   .footer-grid { grid-template-columns: 1fr; }
   .hero-cta { flex-direction: column; align-items: stretch; }
   .hero-cta .btn { width: 100%; }
   .free-flag { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
   * { scroll-behavior: auto !important; }
   [data-aos] { transition: none !important; transform: none !important; opacity: 1 !important; }
}