/* -------------------------
  Responsive styles - Mobile first
  Replace your existing styles.css with this
   -------------------------*/
:root{
  --bg:#071129;
  --card:#0b1930;
  --muted:#9fb3c8;
  --accent:#00ffa3;
  --accent-2:#6de1ff;
  --max-width:1100px;
  --radius:12px;
  font-family: Inter, system-ui, -apple-system, 'Segoe UI', Roboto, Arial;
  font-size:16px;
}

/* reset / base */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:linear-gradient(180deg,#020617 0%, var(--bg) 60%);
  color:#e6f0f6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.45;
  font-size:16px;
}
.container{max-width:var(--max-width);margin:0 auto;padding:16px}

/* topbar */
.topbar{position:sticky;top:0;z-index:60;background:linear-gradient(180deg,rgba(2,6,23,0.6),rgba(2,6,23,0.35));backdrop-filter:blur(6px);border-bottom:1px solid rgba(255,255,255,0.03)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0}
.brand{display:flex;align-items:center;gap:12px}
.logo{font-size:26px}
.title{font-weight:800;font-size:16px}
.subtitle{font-size:12px;color:var(--muted);margin-top:2px}

/* mobile menu button */
.mobile-menu-btn{
  background:transparent;border:0;padding:6px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;margin-right:6px;
}
.hamburger{width:22px;height:2px;background:#e6f0f6;position:relative;display:block}
.hamburger::before,.hamburger::after{content:"";position:absolute;left:0;right:0;height:2px;background:#e6f0f6}
.hamburger::before{top:-6px}
.hamburger::after{top:6px}

/* nav wrap */
.nav-wrap{display:flex;align-items:center;gap:12px}
.nav-links{list-style:none;padding:0;margin:0;display:flex;gap:8px;flex-wrap:wrap}
.nav-links a{color:inherit;text-decoration:none;padding:8px 10px;border-radius:8px;font-weight:700}
.buy-btn{padding:8px 12px;border-radius:10px;border:1px solid rgba(255,255,255,0.06);background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#001218;font-weight:800}

/* hero */
.hero{padding:28px 0}
.hero-inner{display:grid;grid-template-columns:1fr;gap:18px;align-items:center}
.hero h1{font-size:28px;margin:0}
.lead{color:var(--muted);margin:6px 0 12px}
.actions{display:flex;gap:10px;flex-wrap:wrap}
.quick{display:flex;gap:8px;flex-wrap:wrap;list-style:none;padding:0;margin:12px 0 0}
.quick li{background:rgba(255,255,255,0.02);padding:8px;border-radius:8px;color:var(--muted);font-weight:700}

/* art image */
.hero-art{text-align:center}
.hero-img{width:220px;max-width:60%;height:auto;border-radius:14px;box-shadow:0 6px 22px rgba(0,255,163,0.14);transition:transform .22s}
.hero-img:hover{transform:translateY(-6px)}

/* sections */
.section{padding:20px 0}
h2{font-size:18px;margin:0 0 10px}
p{margin:0 0 12px;color:#d9eef6}
.grid{display:grid;grid-template-columns:1fr;gap:12px}
.box{background:var(--card);padding:14px;border-radius:12px;border:1px solid rgba(255,255,255,0.03)}
.images-row{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
figure{width:100%;margin:0;background:rgba(255,255,255,0.02);padding:8px;border-radius:10px}
figure img{width:100%;height:auto;border-radius:8px}

/* utility grid */
.grid-2{display:grid;grid-template-columns:1fr;gap:12px}
.feature{background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent);padding:12px;border-radius:10px}

/* socials */
.socials{display:flex;gap:8px;flex-wrap:wrap}
.social{padding:8px 12px;border-radius:10px;text-decoration:none;border:1px solid rgba(255,255,255,0.04);font-weight:700}

/* footer */
.footer{padding:18px 0;color:var(--muted)}

/* helper: larger touch targets */
button, .btn, a.btn, .social, .buy-btn{min-height:44px;padding:10px 14px;display:inline-flex;align-items:center;justify-content:center;touch-action:manipulation}

/* -------------------------
   Larger screens
   -------------------------*/
@media(min-width:760px){
  .hero-inner{grid-template-columns:1fr 420px}
  .hero h1{font-size:40px}
  .grid{grid-template-columns:repeat(3,1fr)}
  .grid-2{grid-template-columns:repeat(2,1fr)}
  figure{width:48%}
  .hero-img{max-width:350px}
}

/* Desktop / wider */
@media(min-width:1100px){
  .topbar-inner{padding:14px 0}
  .container{padding:0 20px}
}

/* -------------------------
  Mobile menu behaviour (small JS toggles class)
  -------------------------*/
.nav-links.hidden-mobile{
  display:none;
}
@media(min-width:760px){
  .mobile-menu-btn{display:none} /* hide hamburger on larger screens */
  .nav-links{display:flex !important}
}

/* accessibility focus */
a:focus, button:focus { outline:2px solid rgba(0,255,163,0.25); outline-offset:2px; }

/* small screens tweak for nav & buy */
@media(max-width:759px){
  .nav-wrap{flex-direction:row;align-items:center;gap:8px}
  .buy-btn{padding:10px 12px;font-size:14px}
  .nav-links{flex-direction:column;align-items:flex-start;background:transparent;padding:8px 0}
  .nav-links li{width:100%}
  .nav-links a{display:block;width:100%;padding:10px 8px;border-radius:8px}
  .topbar-inner{padding:10px}
}