:root { --primary-color: #ff6600; --bg-color: #f4f7f6; --text-color: #333; }
body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; margin: 0; padding: 0; background-color: var(--bg-color); color: var(--text-color); }
header { background-color: #222; padding: 15px 40px; display: flex; justify-content: space-between; align-items: center; color: white; border-bottom: 3px solid var(--primary-color); }
.logo-container { display: flex; align-items: center; gap: 15px; }
.logo-text { font-size: 24px; font-weight: bold; color: var(--bg-color); }
/* Logo transparent ဖြစ်စေရန် */
.logo-img { width: 60px; height: 60px; object-fit: contain; background: transparent; }
.nav-links { display: flex; align-items: center; gap: 15px; }
.nav-links input { padding: 10px 15px; border-radius: 20px; border: none; outline: none; width: 250px; }
.login-btn, #cartBtn, .checkout-btn { background-color: var(--primary-color); color: white; border: none; padding: 10px 20px; border-radius: 20px; cursor: pointer; font-weight: bold; transition: 0.3s; }
.login-btn:hover, #cartBtn:hover, .checkout-btn:hover { opacity: 0.8; }
.sub-nav { background-color: #fff; padding: 0 40px; display: flex; align-items: center; box-shadow: 0 2px 5px rgba(0,0,0,0.05); min-height: 45px; }
.dropdown { position: relative; display: inline-block; }
.dropbtn { background-color: transparent; border: none; padding: 10px 0; font-size: 14px; font-weight: bold; cursor: pointer; display: flex; align-items: center; gap: 10px; }
.dropdown-content { display: none; position: absolute; background-color: white; min-width: 250px; box-shadow: 0 8px 16px rgba(0,0,0,0.1); z-index: 100; border-radius: 0 0 8px 8px; }
.dropdown:hover .dropdown-content { display: block; }
.dropdown-item { padding: 12px 20px; display: flex; justify-content: space-between; cursor: pointer; border-bottom: 1px solid #f0f0f0; position: relative; }
.dropdown-item:hover { background-color: #f9f9f9; color: var(--primary-color); }
.sub-menu { display: none; position: absolute; left: 100%; top: 0; background: white; min-width: 200px; box-shadow: 0 8px 16px rgba(0,0,0,0.1); border-radius: 0 8px 8px 8px; }
.dropdown-item:hover .sub-menu { display: block; }
.sub-menu a { display: block; padding: 12px 20px; text-decoration: none; color: #333; border-bottom: 1px solid #f0f0f0; }
.sub-menu a:hover { background-color: #f9f9f9; color: var(--primary-color); }
.banner-container { flex-grow: 1; padding-left: 30px; color: var(--primary-color); font-weight: bold; font-size: 16px; display: flex; align-items: center; }

/* Product Grid & Cards */
.section-title { text-align: center; margin: 40px 0 20px; font-size: 28px; }
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; max-width: 1200px; margin: 0 auto; padding: 20px; }
.product-card { background: white; border: 1px solid #eee; border-radius: 12px; padding: 15px; text-align: center; transition: 0.3s; cursor: pointer; box-shadow: 0 4px 10px rgba(0,0,0,0.03); display: flex; flex-direction: column; justify-content: space-between; }
.product-card:hover { transform: translateY(-5px); box-shadow: 0 8px 20px rgba(0,0,0,0.1); border-color: var(--primary-color); }
.product-image { width: 100%; height: 180px; object-fit: contain; margin-bottom: 15px; }
.product-info h3 { margin: 0 0 5px; font-size: 16px; color: #222; }
.price { font-size: 18px; color: var(--primary-color); font-weight: bold; margin: 10px 0; }
.add-to-cart-btn { background: #333; color: white; border: none; padding: 10px; width: 100%; border-radius: 6px; cursor: pointer; transition: 0.3s; margin-top: 10px; }
.add-to-cart-btn:hover { background: var(--primary-color); }

/* Cart Sidebar */
.cart-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 1000; opacity: 0; visibility: hidden; transition: 0.3s; }
.cart-overlay.show { opacity: 1; visibility: visible; }
.cart-sidebar { position: fixed; top: 0; right: -400px; width: 350px; height: 100%; background: white; box-shadow: -2px 0 10px rgba(0,0,0,0.1); z-index: 1001; transition: right 0.3s ease; display: flex; flex-direction: column; }
.cart-sidebar.show { right: 0; }
.cart-header { background: var(--primary-color); color: white; padding: 20px; display: flex; justify-content: space-between; align-items: center; }
.cart-items { padding: 20px; flex-grow: 1; overflow-y: auto; }
.cart-footer { padding: 20px; background: #f9f9f9; border-top: 1px solid #ddd; }

/* Modals */
.modal-overlay { display: none; position: fixed; z-index: 2000; left: 0; top: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.7); align-items: center; justify-content: center; }
.modal-content { background: white; padding: 30px; border-radius: 12px; width: 90%; max-width: 500px; position: relative; }
.auth-input { width: 100%; padding: 12px; margin-bottom: 15px; border: 1px solid #ddd; border-radius: 6px; box-sizing: border-box; }

/* Admin Table */
.admin-table { width: 100%; border-collapse: collapse; background: white; border-radius: 8px; overflow: hidden; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.admin-table th, .admin-table td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #f0f0f0; }
.admin-table th { background-color: #f8f9fa; font-size: 13px; text-transform: uppercase; color: #555; }
.admin-tabs { display: flex; gap: 15px; margin-bottom: 20px; border-bottom: 2px solid #ddd; padding-bottom: 10px; }
.tab-btn { background: none; border: none; padding: 10px 20px; font-size: 16px; cursor: pointer; color: #666; font-weight: bold; }
.tab-btn.active { color: var(--primary-color); border-bottom: 3px solid var(--primary-color); }

/* Slider Dots */
#frontHeroDots { position: absolute; bottom: 20px; width: 100%; text-align: center; z-index: 10; }
.dot { display: inline-block; width: 12px; height: 12px; margin: 0 6px; background-color: rgba(255, 255, 255, 0.5); border-radius: 50%; cursor: pointer; transition: all 0.3s ease; box-shadow: 0 2px 4px rgba(0,0,0,0.3); }
.dot.active { background-color: var(--primary-color); transform: scale(1.3); }

/* ========================================================== */
/* 📱 Mobile Responsive Design (သေချာပေါက် အလုပ်လုပ်မယ့်ကုဒ်များ) 📱 */
/* ========================================================== */
@media screen and (max-width: 768px) {
    
    /* ၁။ Header အပိုင်း - Search ကို တစ်တန်း၊ ခလုတ် ၂ ခုကို တစ်တန်း သေချာပေါက် ဆင်းစေရန် */
    header { 
        display: block !important; /* Flex ကိုဖြုတ်ပြီး Block နဲ့ နေရာချပါမည် */
        padding: 15px !important; 
    }
    .logo-container {
        display: flex !important;
        justify-content: center !important; /* Logo ကို အလယ်ပို့မည် */
        margin-bottom: 15px !important;
    }
    .nav-links {
        display: flex !important;
        flex-wrap: wrap !important; /* သေချာပေါက် အောက်ဆင်းစေရန် */
        justify-content: space-between !important;
        gap: 12px 0 !important; /* အပေါ်အောက် ခွာမည် */
        width: 100% !important;
        margin: 0 !important;
    }
    .nav-links input {
        width: 100% !important;
        flex: 0 0 100% !important; /* Search Box ကို ၁၀၀ ရာခိုင်နှုန်း အပြည့်ယူစေမည် */
        box-sizing: border-box !important;
        font-size: 16px !important; /* ဖုန်းမှာ Zoom မဆွဲစေရန် */
        padding: 12px 15px !important;
    }
    .login-btn, #cartBtn, .checkout-btn {
        width: 45% !important;
        flex: 0 0 45% !important; /* ခလုတ်များကို ၄၈ ရာခိုင်နှုန်းစီဖြင့် တစ်ဝက်စီ ယူစေမည် */
        box-sizing: border-box !important;
        margin: 0 !important;
        padding: 12px 0 !important;
        text-align: center !important;
    }

    /* ၂။ Sub Nav (Categories နှင့် Moving Text ထပ်မနေစေရန်) */
    .sub-nav { 
        padding: 10px 15px !important; 
        display: flex !important;
        justify-content: space-between !important;
        align-items: center !important;
        overflow: hidden !important;
    }
    .dropbtn {
        padding: 0 !important;
        font-size: 14px !important;
        white-space: nowrap !important; /* Categories စာသား မကျိုးစေရန် */
    }
    .banner-container { 
        padding-left: 10px !important; 
        font-size: 13px !important; /* ဖုန်းမှာ စာလုံးဆိုဒ် အနည်းငယ် သေးပါမည် */
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important; /* နေရာမလောက်ပါက ... ဖြင့် အဆုံးသတ်ပေးမည် */
    }

    /* ၃။ Hero Banner ပုံများ အချိုးအစားမှန်စေရန် */
    .banner-img, 
    .carousel-item img,
    img[alt*="banner"] { 
        width: 100% !important;
        aspect-ratio: 16 / 9 !important; /* ဖုန်းနဲ့ ကိုက်ညီသော အချိုးအစား */
        height: auto !important;
        object-fit: cover !important; /* မျက်နှာပြင်အပြည့် လှလှပပပေါ်စေရန် */
        display: block !important;
    }

    /* ၄။ Modal (Product Detail) ပုံကြီး အရမ်းမရှည်စေရန် ဖြတ်ချခြင်း */
    .modal-content {
        width: 100% !important;
        max-height: 85vh !important; 
        overflow-y: auto !important; 
        padding: 20px 15px !important;
        margin: 5vh auto !important;
        box-sizing: border-box !important;
    }
    .modal-content img {
        width: 100% !important;
        max-height: 250px !important; /* ပုံအမြင့်ကို 250px ဖြင့် ကန့်သတ်လိုက်ပါသည် */
        object-fit: contain !important; /* ပုံမလိမ်သွားစေဘဲ အပြည့်ပေါ်စေရန် */
        display: block !important;
        margin: 0 auto 15px auto !important;
        background-color: #f9f9f9 !important; /* ပုံနောက်ခံ အရောင်ဖျော့ဖျော့လေး ခံထားပါသည် */
        border-radius: 8px !important;
    }

    /* Thumbnail ပုံအသေးလေးများအတွက် */
    .modal-content img[style*="width"], 
    .thumbnail-img {
        max-height: 60px !important;
        width: 60px !important;
        object-fit: cover !important;
        margin-right: 5px !important;
        display: inline-block !important;
        background-color: transparent !important;
    }

    /* ၅။ Product Grid များ */
    .product-grid { 
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)) !important; 
        gap: 15px !important; 
        padding: 15px !important; 
    }
    .product-image { height: 140px !important; }
}

@media screen and (max-width: 400px) {
    .product-grid { grid-template-columns: 1fr !important; }
}