:root{
  --bg-1:#fff7f0;
  --bg-2:#ffeaf6;
  --bg-3:#eef4ff;
  --surface:#ffffff;
  --surface-2:#f8fafc;

  --text:#101828;
  --muted:#667085;
  --border:#e6e8ee;

  --accent:#ff7a18;   /* orange */
  --accent-2:#ff5aa5; /* pink */
  --accent-3:#7c8cff; /* indigo */
  --gradient-brand: linear-gradient(90deg, #ff7a18, #ff5aa5, #7c8cff);

  --shadow-1:0 10px 30px rgba(16,24,40,.06),0 4px 12px rgba(16,24,40,.05);
  --ring:rgba(255,122,24,.35);
}

*,
*::before,
*::after{ box-sizing:border-box; }

html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background:
    radial-gradient(900px 900px at 15% -10%, rgba(255,255,255,.55), transparent 60%),
    radial-gradient(1000px 1000px at 85% 0%, rgba(255,122,24,.18), transparent 60%),
    linear-gradient(120deg, var(--bg-1) 0%, var(--bg-2) 40%, var(--bg-3) 100%);
  line-height:1.6;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ margin:0 0 10px; line-height:1.2; }
p{ margin:0 0 14px; }
ul{ margin:0; padding-left:18px; }

.container{ width:min(1200px,92%); margin:0 auto; }
.section{ padding:80px 0; }
.section-title{
  font-size:30px; margin-bottom:10px; letter-spacing:.2px;
  font-family:"Pixelify Sans", Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}
.muted{ color:var(--muted); }

/* Skip link (a11y) */
.skip-link{ position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden; }
.skip-link:focus{ left:12px; top:12px; width:auto; height:auto; padding:8px 10px; background:var(--accent); color:#fff; border-radius:8px; z-index:100; }

/* Header (glassy) */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.7);
  backdrop-filter: blur(12px);
  border-bottom:1px solid var(--border);
}
.header-row{ display:flex; align-items:center; justify-content:space-between; min-height:70px; }
.logo{ font-weight:800; font-size:18px; }
.brand{ letter-spacing:.3px; }
.accent{ color:var(--accent); }

/* Nav */
.nav{ display:flex; gap:16px; align-items:center; }
.nav a{ color:var(--muted); padding:10px 12px; border-radius:10px; }
.nav a:hover{ color:var(--text); background:rgba(255,255,255,.7); }

/* Mobile nav */
.nav-toggle{ display:none; }
.hamburger{ display:none; cursor:pointer; padding:10px; }
.hamburger span{ display:block; width:24px; height:2px; background:#222; margin:5px 0; transition:.2s; }

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:12px 18px; border-radius:14px; font-weight:700; border:1px solid transparent;
  transition:transform .15s ease, box-shadow .15s ease, background .2s ease, color .2s ease;
}
.btn.small{ padding:8px 12px; }
.btn.primary{
  background:linear-gradient(135deg, var(--accent), var(--accent-2));
  color:#fff; box-shadow:0 10px 24px var(--ring);
}
.btn.primary:hover{ transform:translateY(-1px); }
.btn.ghost{ background:#fff; color:var(--text); border-color:var(--border); }
.btn.ghost:hover{ border-color:var(--accent); color:var(--accent); }
.btn.disabled, .btn[aria-disabled="true"]{ opacity:.6; cursor:not-allowed; }

/* Hero + background shapes */
.hero{
  position:relative; isolation:isolate;
  padding:120px 0 76px; text-align:center;
}
.hero::before,
.hero::after{
  content:""; position:absolute; z-index:-1; filter:blur(70px); pointer-events:none;
}
.hero::before{
  top:-120px; left:2%;
  width:520px; height:520px;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,.95), rgba(255,255,255,0) 60%),
    radial-gradient(circle at 70% 70%, rgba(255,122,24,.35), rgba(255,122,24,0) 60%);
  opacity:.9;
}
.hero::after{
  top:-60px; right:4%;
  width:560px; height:560px;
  background:
    radial-gradient(circle at 50% 50%, rgba(255,122,24,.35), rgba(255,122,24,0) 60%),
    radial-gradient(circle at 20% 20%, rgba(255,255,255,.8), rgba(255,255,255,0) 55%);
  opacity:.9;
}
.hero-inner{ max-width:900px; margin:0 auto; }
.hero h1{
  font-family:"Pixelify Sans", Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  font-size:clamp(40px, 7vw, 68px); font-weight:800; margin-bottom:14px;
  background:var(--gradient-brand); -webkit-background-clip:text; background-clip:text; color:transparent;
  text-shadow:0 2px 0 rgba(255,255,255,.5), 0 10px 30px rgba(255,90,165,.25);
}
.hero .tagline{ color:var(--muted); font-size:18px; margin-bottom:28px; }
.hero .cta{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }

/* Cards */
.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:20px;
  padding:20px;
  box-shadow:var(--shadow-1);
}

/* Features (3x2, gradient border + top bar on hover) */
.features-grid{ display:grid; gap:18px; grid-template-columns:repeat(3,1fr); }
.feature{
  position:relative; padding:22px; border-radius:20px; overflow:hidden;
  background:var(--surface);
  transition:transform .15s ease, box-shadow .2s ease;
}
.feature::before{
  content:""; position:absolute; inset:-1px;
  background:conic-gradient(from 180deg at 50% 50%, rgba(255,122,24,.45), rgba(255,90,165,.45), rgba(124,140,255,.45), rgba(255,122,24,.45));
  filter:blur(18px); opacity:.45; z-index:0;
}
/* inner panel + animated orange top bar */
.feature::after{
  content:""; position:absolute; inset:1px; border-radius:18px; z-index:1; box-shadow:var(--shadow-1);
  background:
    linear-gradient(90deg, var(--accent), var(--accent-2)) 0 0/0% 3px no-repeat,
    var(--surface);
  transition:background-size .25s ease;
}
.feature:hover::after{ background-size:100% 3px, auto; }
.feature:hover{ transform:translateY(-2px); box-shadow:0 16px 32px rgba(16,24,40,.08); }

.feature > *{ position:relative; z-index:2; }
.feature .icon{
  width:54px; height:54px; border-radius:14px; display:grid; place-items:center;
  background:linear-gradient(135deg, rgba(255,122,24,.18), rgba(124,140,255,.18));
  border:1px solid var(--border); font-size:24px; margin-bottom:12px;
}
.feature h3{ font-size:18px; margin-top:2px; font-weight:800; }
.feature p{ color:var(--muted); }

/* Gallery */
.gallery-grid{ display:grid; gap:16px; grid-template-columns:repeat(3,1fr); }

.shot{
  position:relative;
  overflow:hidden;
  border-radius:18px;
  background:var(--surface);
  border:1px solid var(--border);
  box-shadow:var(--shadow-1);
  transition:transform .15s ease, box-shadow .2s ease;
}
/* animated orange top bar */
.shot::before{
  content:""; position:absolute; left:0; right:0; top:0; height:3px;
  background:linear-gradient(90deg, var(--accent), var(--accent-2));
  transform:scaleX(0); transform-origin:left; transition:transform .28s ease;
}
.shot:hover{ transform:translateY(-3px); box-shadow:0 18px 36px rgba(16,24,40,.10); }
.shot:hover::before{ transform:scaleX(1); }

.shot img{
  aspect-ratio:16/10; width:100%; object-fit:cover; transition:transform .35s ease;
}
.shot:hover img{ transform:scale(1.04); }
.shot figcaption{
  padding:12px 14px; text-align:center; font-weight:700; color:#1f2937;
  background:linear-gradient(180deg,#fff,var(--surface-2));
}

/* Download */
.download .muted{ color:var(--muted); }
.platform-radio{ position:absolute; opacity:0; pointer-events:none; }

.platform-cards{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-top:16px; }
.platform{ position:relative; cursor:pointer; transition:border-color .2s ease, transform .15s ease, box-shadow .2s ease; }
.platform:hover{ transform:translateY(-2px); box-shadow:0 16px 32px rgba(16,24,40,.08); }
.platform h3{ font-size:20px; margin-bottom:6px; }
.platform .bullets{ margin:10px 0 14px; color:var(--muted); }
.platform .select{ font-weight:700; color:var(--accent); }

/* Mini OS icon block */
.platform .platform-icon{
  width:44px; height:44px; border-radius:12px; display:grid; place-items:center; margin-bottom:12px;
  background:linear-gradient(135deg, rgba(255,122,24,.18), rgba(124,140,255,.18));
  border:1px solid var(--border); font-size:22px;
}

/* Pill ribbons */
.ribbon{
  position:absolute; top:-12px; left:16px; padding:6px 12px; border-radius:999px;
  font-size:12px; font-weight:800; letter-spacing:.2px; color:#fff; box-shadow:0 8px 18px rgba(0,0,0,.08);
}
.ribbon.recommended{ background:linear-gradient(135deg, #ff4fa0, #ff7a18); }
.ribbon.compatible{ background:linear-gradient(135deg, #7c8cff, #b17cff); }
.ribbon.soon{ background:linear-gradient(135deg, #ffb84f, #ff7a18); }

/* Highlight selected card via radios */
#p-ios:checked ~ .platform-cards label[for="p-ios"],
#p-win64:checked ~ .platform-cards label[for="p-win64"],
#p-win32:checked ~ .platform-cards label[for="p-win32"]{
  border-color:rgba(255,122,24,.55);
  box-shadow:0 0 0 4px rgba(255,122,24,.18);
}

/* Details */
.platform-details{ margin-top:18px; }
.platform-details .details{
  display:none; margin-top:8px; padding:18px; border-radius:18px;
  border:1px solid var(--border); background:var(--surface); box-shadow:var(--shadow-1);
}
.platform-details .details h3{ margin-bottom:8px; }
.platform-details .actions{ display:flex; gap:10px; flex-wrap:wrap; margin:8px 0 12px; }
.platform-details .specs{ display:grid; gap:16px; grid-template-columns:repeat(2,minmax(0,1fr)); }
.platform-details h4{ margin-bottom:6px; font-size:14px; color:var(--muted); }

#p-ios:checked ~ .platform-details .ios{ display:block; }
#p-win64:checked ~ .platform-details .win64{ display:block; }
#p-win32:checked ~ .platform-details .win32{ display:block; }

/* FAQ */
.faq-item{ background:var(--surface); border:1px solid var(--border); border-radius:16px; padding:14px 16px; margin:10px 0; box-shadow:var(--shadow-1); }
.faq-item>summary{ cursor:pointer; list-style:none; font-weight:700; color:#1f2937; }
.faq-item>summary::-webkit-details-marker{ display:none; }
.faq-item>summary::after{ content:"+"; float:right; color:var(--muted); }
.faq-item[open]>summary::after{ content:"−"; color:var(--accent); }
.faq-item p{ margin-top:8px; color:var(--muted); }

/* Footer */
.site-footer{ border-top:1px solid var(--border); background:rgba(255,255,255,.7); }
.foot{ display:flex; align-items:center; justify-content:space-between; gap:12px; min-height:70px; }
.foot-links{ display:flex; gap:12px; }
.foot-links a{ color:var(--muted); }
.foot-links a:hover{ color:var(--text); }

/* Login Modal */
.modal{
  position:fixed; inset:0; z-index:100; display:flex; align-items:center; justify-content:center;
  opacity:0; pointer-events:none; transition:opacity .3s ease;
}
.modal.active{ opacity:1; pointer-events:all; }

.modal-backdrop{
  position:absolute; inset:0; background:rgba(0,0,0,.5);
  backdrop-filter:blur(8px); animation:fadeIn .3s ease;
}

.modal-content{
  position:relative; width:min(440px, 90%); background:var(--surface);
  border-radius:24px; padding:32px; box-shadow:0 20px 60px rgba(0,0,0,.2);
  animation:slideUp .4s cubic-bezier(.16,1,.3,1);
  border:1px solid var(--border);
}

.modal-close{
  position:absolute; top:16px; right:16px; width:36px; height:36px;
  border:none; background:var(--surface-2); border-radius:50%;
  font-size:24px; cursor:pointer; color:var(--muted);
  transition:all .2s ease; display:flex; align-items:center; justify-content:center;
}
.modal-close:hover{ background:var(--border); color:var(--text); transform:rotate(90deg); }

.modal-header{ text-align:center; margin-bottom:28px; }
.modal-icon{
  width:64px; height:64px; margin:0 auto 16px; border-radius:16px;
  background:linear-gradient(135deg, rgba(255,122,24,.15), rgba(124,140,255,.15));
  border:1px solid var(--border); display:flex; align-items:center; justify-content:center;
  font-size:32px; animation:bounce 1s ease infinite;
}
.modal-header h2{ font-size:28px; margin-bottom:8px; }
.modal-header .muted{ font-size:15px; }

.login-form{ margin-top:24px; }
.form-group{ margin-bottom:20px; }
.form-group label{
  display:block; margin-bottom:8px; font-weight:600; font-size:14px; color:var(--text);
}
.form-group input{
  width:100%; padding:12px 16px; border-radius:12px; border:2px solid var(--border);
  font-size:15px; font-family:inherit; transition:all .2s ease;
  background:var(--surface-2);
}
.form-group input:focus{
  outline:none; border-color:var(--accent);
  box-shadow:0 0 0 4px rgba(255,122,24,.1);
  background:var(--surface);
}

.error-message{
  margin:16px 0; padding:12px 16px; border-radius:12px;
  background:linear-gradient(135deg, rgba(239,68,68,.1), rgba(220,38,38,.08));
  border:1px solid rgba(239,68,68,.3); color:#dc2626;
  font-size:14px; font-weight:600; text-align:center;
  transform:scale(.95); opacity:0; max-height:0; overflow:hidden;
  transition:all .3s cubic-bezier(.16,1,.3,1);
}
.error-message.show{
  transform:scale(1); opacity:1; max-height:100px; margin:16px 0;
  animation:shake .5s ease;
}

.btn.full-width{ width:100%; position:relative; }
.btn-text{ transition:opacity .2s ease; }
.btn-loader{
  position:absolute; left:50%; top:50%; transform:translate(-50%, -50%);
  width:20px; height:20px; border:2px solid rgba(255,255,255,.3);
  border-top-color:#fff; border-radius:50%; opacity:0;
  animation:spin 1s linear infinite; pointer-events:none;
}
.btn.loading .btn-text{ opacity:0; }
.btn.loading .btn-loader{ opacity:1; }

.modal-footer{ margin-top:24px; text-align:center; padding-top:20px; border-top:1px solid var(--border); }
.modal-footer strong{ color:var(--accent); }

/* Animations */
@keyframes fadeIn{
  from{ opacity:0; }
  to{ opacity:1; }
}

@keyframes slideUp{
  from{ opacity:0; transform:translateY(30px); }
  to{ opacity:1; transform:translateY(0); }
}

@keyframes bounce{
  0%, 100%{ transform:translateY(0); }
  50%{ transform:translateY(-8px); }
}

@keyframes shake{
  0%, 100%{ transform:translateX(0); }
  25%{ transform:translateX(-8px); }
  75%{ transform:translateX(8px); }
}

@keyframes spin{
  to{ transform:translate(-50%, -50%) rotate(360deg); }
}

/* Responsive */
@media (max-width:1024px){
  .features-grid{ grid-template-columns:repeat(2,1fr); }
  .gallery-grid{ grid-template-columns:repeat(3,1fr); }
}
@media (max-width:720px){
  .section{ padding:60px 0; }
  .gallery-grid{ grid-template-columns:1fr; }
  .platform-cards{ grid-template-columns:1fr; }
  .platform-details .specs{ grid-template-columns:1fr; }
  .nav{ position:absolute; inset:70px 0 auto 0; background:rgba(255,255,255,.96); border-bottom:1px solid var(--border); display:none; padding:10px 4%; }
  .nav a{ display:block; padding:12px; }
  .hamburger{ display:block; }
  .nav-toggle:checked ~ .nav{ display:block; }
}