:root{
  --brand:#1e90ff; --brand-2:#ff8a00;
  --bg:#f7f7f9; --card:#ffffff; --text:#101114; --muted:#686c76; --border:#e6e8ee;
}
:root[data-theme="dark"]{
  --brand:#62b4ff; --brand-2:#ffc071;
  --bg:#101114; --card:#15181e; --text:#e8eaf0; --muted:#a8acbc; --border:#2a2f3a;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:'Vazirmatn',system-ui,sans-serif}
img{max-width:100%;display:block;border-radius:12px}
a{text-decoration:none;color:inherit}
.container{max-width:1100px;margin-inline:auto;padding-inline:16px}

/* هدر */
.site-header{position:sticky;top:0;z-index:1000;background:var(--card);border-bottom:1px solid var(--border)}
.header-grid{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:56px}
.brand{display:flex;align-items:center;gap:10px}
.logo-text{font-weight:900;font-size:1.2rem;color:var(--brand)}
.logo-text span{color:var(--text)}
.main-nav{display:flex;align-items:center;gap:14px}
.main-nav a{padding:8px 10px;border-radius:10px;font-weight:600}
.main-nav a:hover,.main-nav a.active{background:color-mix(in oklab,var(--brand) 14%, transparent);color:var(--brand)}
.header-actions{display:flex;align-items:center;gap:8px}
.theme-toggle,.mobile-menu{border:1px solid var(--border);background:var(--card);padding:8px 12px;border-radius:10px;cursor:pointer;font-weight:700}

/* موبایل منو */
/* دکمه همبرگری پیش‌فرض مخفی */
.mobile-menu {
  display: none; /* دسکتاپ و حالت عادی مخفی */
}

/* موبایل منو */
@media (max-width:900px){
  .main-nav{
    position:fixed;
    top:0;
    right:-100%;
    height:100dvh;
    width:74vw;
    max-width:320px;
    background:var(--card);
    border-left:1px solid var(--border);
    padding:80px 20px;
    display:flex;
    flex-direction:column;
    gap:18px;
    transition:right .25s ease;
    box-shadow:-12px 0 24px rgba(0,0,0,.2);
  }
  .main-nav.active{right:0}

  /* دکمه همبرگری فقط در موبایل نمایش داده شود */
  .mobile-menu {
    display:inline-block;
  }
}

/* دکمه‌ها */
.btn{background:var(--brand);color:#fff;border:none;border-radius:12px;padding:11px 18px;font-weight:700;cursor:pointer;transition:transform .12s, filter .12s}
.btn:hover{transform:translateY(-1px);filter:brightness(1.05)}
.btn.outline{background:transparent;color:var(--brand);border:2px solid var(--brand)}

/* سکشن‌ها و کارت‌ها */
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:0 6px 18px rgba(0,0,0,.06);padding:16px}
.page-header{padding-block:22px}
.page-header h1,.page-header p{text-align:center;margin-inline:auto;max-width:600px}
.page-header p{color:var(--muted)}

/* Hero */
.hero{display:flex;align-items:center;justify-content:space-between;padding:40px 0;flex-wrap:wrap;gap:24px}
.hero-left{flex:1 1 420px;min-width:280px}
.hero-left h1,.hero-left p{text-align:center;margin-inline:auto;max-width:600px}
.hero-left h1{font-size:2rem;margin-bottom:12px}
.hero-left p{color:var(--muted);margin-bottom:16px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.hero-right{flex:1 1 360px;min-width:280px;text-align:center}

/* فیچرها */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:14px 0;text-align:center;justify-content:center}
.feature{background:var(--card);padding:14px;border-radius:12px;box-shadow:0 2px 10px rgba(0,0,0,.06);font-weight:600}
@media (max-width:700px){.features{grid-template-columns:1fr}}

/* گرید عمومی */
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.grid-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.grid-3,.grid-2{grid-template-columns:1fr}}

/* محصولات */
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding-block:18px}
.product-card{display:flex;flex-direction:column;gap:10px;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px}
.product-card img{aspect-ratio:1/1;object-fit:cover;border-radius:12px}
.product-card h3{font-size:1.06rem;line-height:1.4}
.price{color:var(--brand);font-weight:800}

/* فرم‌ها */
.form{display:flex;flex-direction:column;gap:10px}
.form input,.form textarea{width:100%;background:var(--card);color:var(--text);border:1px solid var(--border);border-radius:12px;padding:10px 12px}
.form input:focus,.form textarea:focus{outline:3px solid color-mix(in oklab,var(--brand) 30%, transparent)}

/* سبد خرید */
.cart-container{display:grid;grid-template-columns:1fr;gap:18px;padding-bottom:24px}
.cart-items{display:flex;flex-direction:column;gap:12px}
.cart-item{
  display:grid;grid-template-columns:80px 1fr auto auto;gap:12px;align-items:center;
  background:var(--card);border:1px solid var(--border);border-radius:14px;padding:10px
}
.cart-item img{width:80px;height:80px;object-fit:cover;border-radius:10px}
.item-actions{display:flex;align-items:center;gap:8px}
.qty-btn{width:28px;height:28px;border-radius:50%;border:1px solid var(--border);background:transparent;cursor:pointer}
.remove-btn{background:transparent;border:none;color:#d52;font-weight:800;cursor:pointer}
.cart-summary{display:flex;flex-direction:column;gap:12px}
.cart-total-line{display:flex;align-items:center;justify-content:space-between}

/* فوتر */
.site-footer{margin-top:40px;padding:18px;text-align:center;color:var(--muted);border-top:1px solid var(--border);background:var(--card)}