/* ===== Theme ===== */
:root{
  --bg:#0F0F12; --text:#EAEAEA; --muted:#9AA3AF; --accent:#FF6F00;
  --card:#16171C; --border:#1E2026; --radius:14px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg); color:var(--text); line-height:1.55;
}

/* Light theme overrides (Implementation 1) */
body.theme-light{
  --bg:#F5F5F7;
  --text:#111827;
  --muted:#4B5563;
  --card:#FFFFFF;
  --border:#E5E7EB;
}

/* ===== Header ===== */
.site-header{
  position:sticky; top:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 20px;
  background:linear-gradient(180deg,rgba(0,0,0,.65),rgba(0,0,0,0));
  backdrop-filter:saturate(1.2) blur(6px);
}
.logo{display:flex; align-items:center; gap:10px; color:var(--text); text-decoration:none; font-weight:800}
.logo .mark{color:var(--accent)}
.nav-desktop{display:none; gap:24px}
.nav-link{color:var(--text); text-decoration:none; font-weight:600; opacity:.95}
.nav-link:hover{color:var(--accent)}
.header-actions{display:flex; align-items:center; gap:12px}

/* Theme toggle button */
.theme-toggle{
  border-radius:999px;
  border:1px solid #2A2C33;
  background:#22242B;
  color:var(--text);
  padding:6px 10px;
  font-size:16px;
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
body.theme-light .theme-toggle{
  background:#FFFFFF;
  border-color:#D1D5DB;
}
.theme-toggle:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}

.cart{
  display:flex; align-items:center; gap:6px;
  background:#22242B; color:var(--text);
  border:1px solid #2A2C33; border-radius:999px;
  padding:6px 10px; cursor:pointer;
}
body.theme-light .cart{
  background:#FFFFFF;
  border-color:#D1D5DB;
}
.cart-count{
  background:var(--accent); color:#0B0C0F;
  border-radius:999px; padding:0 8px; font-weight:800;
}
.menu-button{display:inline-flex; flex-direction:column; gap:4px; border:0; background:transparent; cursor:pointer}
.menu-bar{width:22px; height:2px; background:var(--text); display:block}

/* Mobile nav drawer */
.nav-mobile{
  display:none; position:fixed; inset:60px 16px auto 16px; z-index:60;
  background:rgba(22,23,28,.98); border:1px solid #262830; border-radius:12px;
  padding:14px; box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.nav-mobile a{
  display:block; padding:10px 8px; border-radius:8px;
  text-decoration:none; color:var(--text); font-weight:600;
}
.nav-mobile a:hover{background:#1f2026}

/* ===== Hero ===== */
.hero{
  padding:72px 20px 40px;
  background:
    radial-gradient(1200px 400px at 20% -10%, rgba(255,111,0,.15), transparent 60%),
    radial-gradient(1000px 400px at 100% 0%, rgba(255,111,0,.09), transparent 60%);
}
.hero-inner{max-width:1100px; margin:0 auto}

/* Implementation 3: greeting badge */
.hero-badge{
  display:inline-flex;
  padding:6px 12px;
  margin-bottom:10px;
  border-radius:999px;
  border:1px solid #2A2C33;
  font-size:13px;
  text-transform:uppercase;
  letter-spacing:.08em;
  color:var(--accent);
  background:rgba(15,15,18,0.9);
}
body.theme-light .hero-badge{
  background:rgba(255,255,255,0.9);
  border-color:#E5E7EB;
}

.hero h1{font-size:clamp(28px,4vw,52px); line-height:1.05; margin:0 0 10px}
.hero p{font-size:clamp(16px,2vw,20px); color:var(--muted); max-width:720px; margin:0 0 18px}
.hero-cta{display:flex; gap:10px; flex-wrap:wrap}

/* ===== Buttons ===== */
.btn{
  display:inline-block; padding:12px 18px; border-radius:999px;
  background:#22242B; color:var(--text); text-decoration:none; font-weight:600;
  border:1px solid #2A2C33;
}
.btn:hover{border-color:var(--accent)}
.btn-primary{background:var(--accent); color:#0C0C0F; border:0}
.btn-small{padding:8px 12px; font-size:14px}
.outline{background:transparent;}

/* Light theme button tweak */
body.theme-light .btn{
  background:#FFFFFF;
  border-color:#D1D5DB;
}
body.theme-light .btn-primary{
  background:var(--accent);
  color:#0C0C0F;
}

/* ===== Sections ===== */
.section{padding:40px 20px 20px}
.section-head{max-width:1100px; margin:0 auto 14px; padding:0 0}
.section-head h2{margin:0 0 6px; font-size:clamp(22px,3vw,32px)}
.section-sub{margin:0; color:var(--muted)}

/* Cards */
.grid3{
  max-width:1100px; margin:16px auto 24px; padding:0 0;
  display:grid; grid-template-columns:1fr; gap:18px;
}
.card{
  background:var(--card); border:1px solid var(--border);
  border-radius:var(--radius); overflow:hidden;
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    border-color 0.18s ease;
}
.card img{display:block; width:100%; height:240px; object-fit:cover}
.card-body{padding:16px}
.card-title{margin:4px 0 6px; font-size:20px}
.card-text{margin:0 0 12px; color:var(--muted)}
.card-actions{display:flex; gap:8px; flex-wrap:wrap}
.section-cta{text-align:center}

/* Implementation 2: JS hover class */
.card.card-active{
  transform:translateY(-4px);
  border-color:var(--accent);
  box-shadow:0 18px 35px rgba(0,0,0,0.38);
}
body.theme-light .card.card-active{
  box-shadow:0 18px 35px rgba(15,23,42,0.16);
}

/* Classes */
.class-list{
  max-width:1100px; margin:10px auto 0; padding:0 20px 0 0; list-style:none;
}
.class-list li{
  background:var(--card); border:1px solid var(--border);
  border-radius:12px; padding:14px 16px; margin:10px 20px;
}
.class-list h3{margin:0 0 4px}

/* FAQ */
.faq{max-width:900px; margin:6px auto 0; padding:0 20px}
.faq-q{
  width:100%; text-align:left; padding:12px 14px; border-radius:10px; border:1px solid var(--border);
  background:#14151a; color:var(--text); font-weight:600; cursor:pointer; margin:10px 0 4px;
}
.faq-q[aria-expanded="true"]{border-color:var(--accent)}
.faq-a{display:none; padding:6px 2px 10px; color:var(--muted)}
.faq-a.open{display:block}

/* Contact */
.contact-form{
  max-width:800px; margin:10px auto 40px;
  display:grid; grid-template-columns:1fr 1fr; gap:12px; padding:0 20px;
}
.contact-form label{display:flex; flex-direction:column; gap:6px; font-weight:600}
.contact-form input, .contact-form textarea{
  background:#14151a; color:var(--text); border:1px solid var(--border); border-radius:10px; padding:10px 12px;
}
.contact-form .full{grid-column:1/-1}
.form-msg{margin-top:8px; color:var(--muted)}

/* Dialogs (Quick View) */
.qv{
  max-width:720px; width:92vw; border:1px solid #262830;
  border-radius:16px; padding:0; background:#131419; color:var(--text);
}
.qv::backdrop{background:rgba(0,0,0,.6)}
.qv img{
  width:100%; height:240px; object-fit:cover;
  border-top-left-radius:16px; border-top-right-radius:16px;
}
.qv h3{margin:14px 16px 2px; font-size:20px}
.qv p{margin:0 16px 14px; color:var(--muted)}
.qv .btn{margin:0 16px 16px}
.qv .close{
  position:absolute; right:10px; top:8px; border:0; background:transparent; color:#B9C0CA;
  font-size:28px; line-height:1; cursor:pointer;
}
.qv .close:hover{color:#fff}

/* Footer */
.site-footer{
  padding:40px 20px; border-top:1px solid var(--border);
  color:var(--muted); text-align:center;
}

/* ===== Responsive ===== */
@media (min-width:820px){
  .nav-desktop{display:flex}
  .menu-button{display:none}
  .nav-mobile{display:none !important}
  .grid3{grid-template-columns:repeat(3,1fr); gap:22px}
  .card img{height:220px}
}