/* ============================================================
   SolveX public website — shared styles
   Self-contained, mobile-first, no external dependencies.
   ============================================================ */
:root{
  --primary:#5E35B1;
  --primary-2:#7E57C2;
  --primary-dark:#4527A0;
  --primary-soft:#EDE7F6;
  --primary-softer:#F4F1FB;
  --bg:#F7F6FC;
  --surface:#FFFFFF;
  --border:#E9E4F6;
  --text:#191427;
  --muted:#6B7280;
  --muted-2:#8A8397;
  --success:#2E7D32;
  --ink:#1D1533;
  --radius:16px;
  --radius-sm:12px;
  --shadow-sm:0 1px 2px rgba(25,20,39,.05);
  --shadow:0 2px 6px rgba(25,20,39,.05),0 12px 30px rgba(94,53,177,.07);
  --shadow-lg:0 20px 50px rgba(94,53,177,.16);
  --maxw:1120px;
  --grad:linear-gradient(135deg,#7E57C2 0%,#5E35B1 55%,#4527A0 100%);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji",sans-serif;
  color:var(--text);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;
}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.2;color:var(--text);margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:2.3rem;font-weight:800}
h2{font-size:1.65rem;font-weight:800}
h3{font-size:1.15rem;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1rem}
img{max-width:100%;height:auto}
.muted{color:var(--muted)}

/* ---- Top bar ---- */
.topbar{background:var(--ink);color:#D7CFEC;font-size:.82rem;letter-spacing:.01em}
.topbar .container{display:flex;gap:16px;justify-content:center;align-items:center;
  padding:8px 22px;flex-wrap:wrap;text-align:center}
.topbar b{color:#fff;font-weight:600}
.topbar .sep{opacity:.4}

/* ---- Header / nav ---- */
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;
  flex-wrap:wrap;padding:12px 22px;max-width:var(--maxw);margin:0 auto}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{width:28px;height:28px;max-width:34px;max-height:34px;flex:0 0 auto;border-radius:8px;box-shadow:0 3px 9px rgba(94,53,177,.3)}
.brand-text{font-size:1.2rem;font-weight:900;letter-spacing:-.03em;color:var(--text)}
.brand-text span{color:var(--primary)}
.nav{display:flex;gap:4px;align-items:center;flex-wrap:wrap}
.nav a{padding:9px 15px;border-radius:10px;color:var(--muted);font-weight:600;font-size:.95rem;text-decoration:none;transition:.15s}
.nav a:hover{background:var(--primary-soft);color:var(--primary);text-decoration:none}
.nav a.active{color:var(--primary);background:var(--primary-soft)}
.nav .btn{margin-left:6px;padding:9px 18px}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:12px;
  font-weight:700;font-size:.98rem;text-decoration:none;cursor:pointer;border:1px solid transparent;
  transition:transform .06s ease,box-shadow .2s ease,background .2s ease}
.btn:hover{text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(94,53,177,.28)}
.btn-primary:hover{box-shadow:0 12px 26px rgba(94,53,177,.36)}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--primary);background:var(--primary-softer)}
.btn-lg{padding:15px 30px;font-size:1.05rem}

/* ---- Hero ---- */
.hero{position:relative;overflow:hidden;padding:76px 0 68px;
  background:radial-gradient(900px 420px at 12% -10%,rgba(126,87,194,.16),transparent 60%),
             radial-gradient(700px 360px at 100% 0%,rgba(94,53,177,.10),transparent 55%),var(--bg)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--border);
  color:var(--primary);font-weight:700;font-size:.8rem;padding:7px 14px;border-radius:999px;
  margin-bottom:20px;box-shadow:var(--shadow-sm)}
.eyebrow .pulse{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(46,125,50,.15)}
.hero h1{font-size:3rem;line-height:1.08;max-width:15ch}
.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero .lead{font-size:1.18rem;color:var(--muted);max-width:52ch;margin-top:6px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-trust{display:flex;gap:20px;flex-wrap:wrap;margin-top:26px;color:var(--muted);font-size:.9rem}
.hero-trust span{display:inline-flex;align-items:center;gap:8px;font-weight:600}
.hero-trust svg{color:var(--primary)}

/* Hero visual (CSS app preview) */
.hero-visual{position:relative;display:flex;justify-content:center}
.app-card{position:relative;width:300px;background:#fff;border:1px solid var(--border);
  border-radius:22px;box-shadow:var(--shadow-lg);padding:18px;transform:rotate(-2deg)}
.app-card-head{display:flex;gap:6px;margin-bottom:14px}
.app-card-head .dot{width:9px;height:9px;border-radius:50%;background:var(--border)}
.course-thumb{height:120px;border-radius:14px;background:var(--grad);display:flex;align-items:center;
  justify-content:center;margin-bottom:14px;position:relative;overflow:hidden}
.course-thumb::after{content:"";position:absolute;inset:0;
  background:radial-gradient(120px 60px at 80% 20%,rgba(255,255,255,.25),transparent)}
.course-thumb .play{width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.92);
  display:flex;align-items:center;justify-content:center;color:var(--primary);z-index:1}
.app-line{height:11px;border-radius:6px;background:#EEE9F7;margin:9px 0}
.app-line.w80{width:80%}.app-line.w55{width:55%}
.app-progress{height:9px;border-radius:6px;background:#EEE9F7;margin-top:14px;overflow:hidden}
.app-progress span{display:block;height:100%;width:72%;background:var(--grad);border-radius:6px}
.app-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px}
.app-foot .mini b{display:block;font-size:.9rem}
.app-foot .mini small{color:var(--muted);font-size:.75rem}
.score{background:var(--primary-soft);color:var(--primary);font-weight:800;font-size:.85rem;
  padding:6px 12px;border-radius:999px}
.float-chip{position:absolute;background:#fff;border:1px solid var(--border);border-radius:12px;
  padding:10px 14px;font-size:.85rem;font-weight:700;box-shadow:var(--shadow);display:flex;align-items:center;gap:8px}
.float-chip.c1{top:6px;right:-6px;color:var(--success)}
.float-chip.c2{bottom:14px;left:-14px;color:var(--primary)}

/* ---- Section scaffolding ---- */
section{padding:66px 0}
.section-head{text-align:center;max-width:62ch;margin:0 auto 40px}
.section-head .kicker{color:var(--primary);font-weight:800;font-size:.82rem;text-transform:uppercase;
  letter-spacing:.08em;display:block;margin-bottom:10px}
.section-head p{color:var(--muted);font-size:1.05rem}
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* ---- Cards ---- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#DCD3F2}
.card h3{margin-bottom:.4em}
.card p{color:var(--muted);margin:0}
.tile{width:52px;height:52px;border-radius:14px;background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.tile svg{width:26px;height:26px}

/* ---- Stats band ---- */
.stats{background:var(--ink);color:#fff;border-radius:22px;padding:34px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;box-shadow:var(--shadow)}
.stats .num{font-size:1.7rem;font-weight:900;background:linear-gradient(120deg,#fff,#C9B8F0);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stats .lbl{color:#C6BEDD;font-size:.9rem;margin-top:4px}

/* ---- Pricing ---- */
.price-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.price-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;display:flex;flex-direction:column;box-shadow:var(--shadow-sm);transition:transform .18s,box-shadow .18s}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.price-card.featured{border-color:var(--primary);box-shadow:var(--shadow);background:
  linear-gradient(180deg,var(--primary-softer),#fff)}
.price-card .plan{font-weight:800;font-size:1.05rem}
.price-card .amt{font-size:1.9rem;font-weight:900;color:var(--primary);margin:10px 0 2px;letter-spacing:-.02em}
.price-card .amt small{font-size:.85rem;font-weight:600;color:var(--muted)}
.price-card ul{list-style:none;padding:0;margin:16px 0 22px}
.price-card li{display:flex;gap:10px;align-items:flex-start;color:var(--muted);margin:9px 0;font-size:.95rem}
.price-card li svg{color:var(--success);flex:0 0 auto;margin-top:3px}
.price-card .btn{margin-top:auto;justify-content:center}
.tag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;
  font-size:.72rem;font-weight:800;letter-spacing:.05em;padding:5px 14px;border-radius:999px;box-shadow:var(--shadow)}
.note{background:#fff;border:1px dashed var(--border);border-radius:14px;padding:16px 18px;color:var(--muted);font-size:.95rem}

/* ---- Anchor cards + product detail blocks ---- */
a.card{text-decoration:none;color:inherit;display:block}
a.card:hover{text-decoration:none}
.card-more{display:inline-flex;align-items:center;gap:5px;margin-top:14px;color:var(--primary);font-weight:700;font-size:.9rem}
.detail-stack{display:grid;gap:20px}
.detail-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 32px;box-shadow:var(--shadow-sm);scroll-margin-top:96px}
.detail-head{display:flex;gap:16px;align-items:flex-start}
.detail-head .tile{margin:0}
.detail-head h2{margin:0;font-size:1.35rem}
.detail-head p{margin:.35em 0 0;color:var(--muted)}
.detail-card .cols{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:22px}
.detail-card h3{font-size:1rem;margin-bottom:.2em}
.feature-list{list-style:none;padding:0;margin:10px 0 0}
.feature-list li{display:flex;gap:10px;align-items:flex-start;color:var(--muted);margin:9px 0;font-size:.96rem}
.feature-list li svg{color:var(--success);flex:0 0 auto;margin-top:3px}
.feature-list li strong{color:var(--text)}

/* ---- Trust / secure ---- */
.secure-row{display:flex;gap:14px;align-items:center;flex-wrap:wrap;justify-content:center;margin-top:8px}
.secure-badge{display:inline-flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--border);
  border-radius:12px;padding:12px 18px;font-weight:700;font-size:.92rem;color:var(--text);box-shadow:var(--shadow-sm)}
.secure-badge svg{color:var(--success)}

/* ---- CTA band ---- */
.cta-band{position:relative;overflow:hidden;background:var(--grad);color:#fff;border-radius:24px;
  padding:52px 40px;text-align:center;box-shadow:var(--shadow)}
.cta-band::before{content:"";position:absolute;inset:0;
  background:radial-gradient(400px 200px at 15% 20%,rgba(255,255,255,.16),transparent 60%)}
.cta-band>*{position:relative}
.cta-band h2{color:#fff;font-size:1.9rem}
.cta-band p{color:rgba(255,255,255,.9);max-width:54ch;margin:0 auto 24px}
.cta-band .btn-primary{background:#fff;color:var(--primary);box-shadow:0 10px 24px rgba(0,0,0,.16)}
.cta-band .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.45)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.2)}

/* ---- Page hero (inner pages) ---- */
.page-hero{padding:52px 0 12px;background:
  radial-gradient(700px 300px at 10% -20%,rgba(126,87,194,.12),transparent 60%),var(--bg)}
.breadcrumb{font-size:.85rem;color:var(--muted-2);margin-bottom:12px}
.breadcrumb a{color:var(--muted)}
.page-hero h1{font-size:2.3rem}
.page-hero .updated{color:var(--muted);font-size:.9rem}
.page-hero .lead{color:var(--muted);font-size:1.1rem;max-width:60ch}

/* ---- Prose (policy) ---- */
.prose{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:34px 38px;box-shadow:var(--shadow-sm);margin:26px 0 8px;max-width:100%}
.prose>p:first-child{font-size:1.05rem;color:var(--muted)}
.prose h2{font-size:1.2rem;margin-top:1.8em;padding-top:.2em}
.prose h2:first-of-type{margin-top:.4em}
.prose ul{padding-left:1.25em;margin:0 0 1rem}
.prose li{margin:.35em 0}
.prose a{font-weight:600}
.prose strong{color:var(--text)}

/* ---- Contact ---- */
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:start}
.contact-item{display:flex;gap:14px;align-items:flex-start;margin-bottom:20px}
.contact-item:last-child{margin-bottom:0}
.contact-item .tile{width:44px;height:44px;margin:0;border-radius:12px}
.contact-item .tile svg{width:22px;height:22px}
.contact-item .label{font-weight:800;font-size:.95rem}
.contact-item .val{color:var(--muted)}
.contact-item .val a{font-weight:600}

/* ---- Footer ---- */
.site-footer{background:var(--ink);color:#C6BEDD;margin-top:44px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:30px;padding:52px 22px 30px;
  max-width:var(--maxw);margin:0 auto}
.footer-grid .brand-text{color:#fff}
.footer-grid .brand-text span{color:#B39DDB}
.footer-about{margin-top:14px;color:#A79FC4;font-size:.95rem;max-width:34ch}
.footer-secure{display:inline-flex;align-items:center;gap:8px;margin-top:16px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:8px 12px;font-size:.82rem;color:#D7CFEC;font-weight:600}
.footer-secure svg{color:#8BE59A}
.footer-grid h4{color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:14px}
.footer-grid a{display:block;color:#C6BEDD;margin-bottom:9px;font-size:.95rem}
.footer-grid a:hover{color:#fff}
.footer-grid p{color:#A79FC4;font-size:.95rem;margin:0 0 8px}
.copyright{border-top:1px solid rgba(255,255,255,.1)}
.copyright .container{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:18px 22px;color:#8E86AC;font-size:.86rem}

/* ---- Responsive ---- */
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:-1}
  .stats{grid-template-columns:repeat(2,1fr);gap:24px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  .grid-3,.grid-2,.grid-4,.price-cards,.contact-grid{grid-template-columns:1fr}
  .detail-card .cols{grid-template-columns:1fr;gap:16px}
  .detail-card{padding:24px 22px}
  .hero{padding:52px 0 44px}
  .hero h1{font-size:2.35rem}
  h1{font-size:1.9rem}h2{font-size:1.4rem}
  section{padding:52px 0}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:480px){
  .nav .btn{display:none}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{padding:36px 22px}
  .prose{padding:24px 20px}
  .stats{grid-template-columns:1fr 1fr;padding:26px}
  .app-card{width:260px}
}