/* ===== RESET & GLOBAL ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --main-color: #e09f3e;
    --dark-color: #3a2e25;
    --light-bg: #fff8f0;
    --card-bg: #ffffff;
    --accent: #335c67;
}

/* 🔥 FIX BODY: CÂN GIỮA TRANG */
body{
    font-family: 'Segoe UI', Arial, sans-serif;
    background-color: var(--light-bg);
    display: grid;
    grid-template-columns: 1fr 320px; /* cột chính + sidebar */
    max-width: 1200px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== HEADER ===== */
header {
    background: linear-gradient(135deg, #e09f3e, #f2cc8f);
    color: white;
    padding: 35px 20px;
    text-align: center;
    grid-column: 1 / span 2;
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

header h1 {
    font-size: 32px;
    margin-bottom: 10px;
}

nav ul {
    list-style: none;
}

nav ul li {
    display: inline-block;
    margin: 0 15px;
}

nav ul li a {
    color: rgb(32, 13, 13);
    text-decoration: none;
    font-weight: 600;
}

nav ul li a:hover {
    opacity: 0.8;
}

/* ===== PRODUCT LIST ===== */
/* 🔥 FIX: CĂN GIỮA KHỐI SẢN PHẨM */
.product-list {
    grid-column: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    padding: 30px;

    max-width: 960px;   /* giới hạn chiều rộng */
    margin: 0 auto;     /* CĂN GIỮA TRANG */
    justify-items: center;
}

/* ===== PRODUCT CARD ===== */
.product-card {
    width: 100%;
    background-color: var(--card-bg);
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    transition: all 0.3s ease;

    display: flex;
    flex-direction: column;
    align-items: center;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 18px 35px rgba(0,0,0,0.15);
}

/* 🔥 FIX ẢNH: ĐỀU – KHÔNG MÉO – LUÔN Ở GIỮA */
.product-card img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 15px;
    background-color: #f2f2f2;
}

/* ===== TEXT ===== */
.product-card h3 {
    font-size: 18px;
    color: var(--dark-color);
    margin-bottom: 6px;
}

.product-card p {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
}

/* ===== BUTTON ===== */
.button {
    background-color: var(--accent);
    border: none;
    color: white;
    padding: 12px 22px;
    font-size: 15px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.button:hover {
    background-color: #1d3f47;
    transform: scale(1.05);
}

/* ===== SIDEBAR ===== */
.sidebar {
    grid-column: 2;
    background-color: #f4f9f9;
    padding: 25px;
    border-left: 3px solid var(--main-color);
}

.sidebar h3 {
    color: var(--dark-color);
    margin-bottom: 15px;
}

.sidebar p {
    font-size: 14px;
    color: #444;
}

.social-icons {
    margin-top: 20px;
}

.social-icons a {
    display: block;
    padding: 10px;
    margin-bottom: 10px;
    background-color: white;
    border-radius: 8px;
    text-decoration: none;
    color: var(--accent);
    font-weight: 500;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background-color: var(--accent);
    color: white;
}

/* ===== FOOTER ===== */
.footer{
    background-color: var(--dark-color);
    color: white;
    padding: 35px 20px;
    grid-column: 1 / span 2;
    display: grid;
    gap: 20px;
    text-align: center;
}

.footer-item {
    font-size: 14px;
    opacity: 0.9;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px){
    body {
        grid-template-columns: 1fr;
    }

    .product-list {
        grid-template-columns: repeat(2, 1fr);
        max-width: 100%;
    }

    .sidebar {
        grid-column: 1;
        margin: 20px;
    }
}

@media (max-width: 576px){
    .product-list {
        grid-template-columns: 1fr;
    }
}