/* ============================
   RESET + ROOT VARIABLES
============================ */
:root {
    --primary-color: #FFFFFF;
    --secondary-color: #f9f9f9;
    --text-color: #333333;
    --accent-color: #ff6600;

    --max-width: 1200px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: var(--secondary-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* ============================
   GLOBAL CONTAINER
============================ */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    background: solid #eee;
}

/* ============================
   HEADER
============================ */
header {
    background: none;
}

header .inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    /*padding: 18px 0;*/

    background: var(--primary-color);
    color: var(--text-color);
    padding: 18px 10px;
    border-radius: 6px; /* tùy chọn */
}

header .logo {
    font-size: 1.6rem;
    font-weight: bold;
}

header nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
}

header nav ul li a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 6px 10px;
    border-radius: 4px;
    transition: 0.25s;
}

header nav ul li a:hover {
    background: rgba(255,255,255,0.2);
}

/* ============================
   MAIN CONTENT
============================ */
main {
    padding: 5px 0;
    background: none;
}

main .inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2px;



    /*display: flex;*/
    justify-content: space-between;
    align-items: center;
    /*padding: 18px 0;*/

    background: var(--primary-color);
    color: var(--text-color);
    padding: 18px 20px;
    border-radius: 6px; /* tùy chọn */

}

/* Nếu sau này bạn muốn chia layout 2 cột:
main .inner {
    grid-template-columns: 2fr 1fr;
}
*/

/* ============================
   FOOTER
============================ */
footer {
    background: none;

    /*padding: 20px 0;
    margin-top: 40px;*/
}

footer .inner {
    background: var(--primary-color);
    color: var(--text-color);
    padding: 10px;
    text-align: center;
    border-radius: 6px;
}

/* ============================
   RESPONSIVE
============================ */
@media (max-width: 768px) {
    header .inner {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    header nav ul {
        flex-direction: column;
        gap: 12px;
    }
}