* {
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}
html, body {
    overflow-x: hidden;
}

.background {
    position: absolute;
    background-image: url(https://b.zmtcdn.com/data/o2_assets/d21d421672f053abdb9f48e7320ef6ac1724931538.jpeg);
    background-size: cover;
    background-position: center -400px;
    background-repeat: no-repeat;
    width: 100%;
    height: 540px;
}
.content {
    position: relative;
}
/*css header*/
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease-in-out, padding 0.3s ease-in-out;
    z-index: 1000;
    flex-direction: row;
    padding: 8px 120px;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0));
}
header:not(.scrolled) {
    background: transparent;
}
header.scrolled {
    background: white;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.1);
}
#logo img {
    filter: brightness(0) invert(1);
    transition: filter 0.3s ease-in-out;
    width: 90px;
}
.scrolled #logo {
    filter: brightness(0);
}
.help-info span {
    color: black;
    font-weight: 400;
    transition: color 0.3s ease-in-out;
}
.help-info {
    display: flex;
    align-items: center;
    gap: 30px;
}
header.scrolled .help-info span {
    font-weight: 400;
    color: #005DFF; 
}
header.scrolled .help-btn {
    padding: 6px 22px;
    color: rgb(0, 0, 0);
    border: none;
    font-size: 16px;
    border-radius: 24px;
    background-color: transparent;
    border: 1px solid rgb(0, 0, 0);
    cursor: pointer;
}

.help-btn {
    padding: 6px 22px;
    color: white;
    border: none;
    font-size: 16px;
    border-radius: 24px;
    background-color: transparent;
    border: 1px solid white;
    cursor: pointer;
}

/*css main*/
main {
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    margin-top: 150px;
}
/* <!-- Phần chữ ở giữa ảnh --> */
.hero {
    justify-content: center;
    background-size: cover;
    background-position: center;
    color: black;
    text-align: center;
    padding: 50px 20px;
}

.hero-content h1 {
    margin-top: -80px;
    font-size: 50px;
    margin-bottom: 25px;
}

.hero-content p {
    font-size: 20px;
}

.cta-btn {
    margin: 25px 0;
    background-color: #007aff;
    color: white;
    border: none;
    padding: 20px 40px;
    border-radius: 15px;
    font-size: 22px;
    cursor: pointer;
}
/* <!-- Phần có chữ và video --> */
.details {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    background: white;
    padding: 50px 30px;
    max-width: 1000px;
    margin: auto;
    border-radius: 16px;
    box-shadow: 0px 4px 12px rgba(0, 0, 0, 0.1);
    gap: 24px;
}
.left {
    flex: 1;
    display: flex;
    flex-direction: column;
}
.top h2 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 8px;
    text-align: left;
}

.top span {
    font-size: 16px;
    font-weight: 100;
    color: gray;
    display: block;
    margin-bottom: 16px;
    text-align: left;
}
.bot {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}
.bot-item {
    display: flex;
    align-items: flex-start;
    width: calc(50% - 8px);
    gap: 10px;
}
.bot-icon i {
    font-size: 15px;
    color: #3AB757;
    margin-top: 4px; 
}
.bot-text {
    font-size: 15px;
    font-weight: 500;
    text-align: left;
}
.d2 {
    font-size: 14px;
    color: gray;
    margin-top: 4px;
}
.d2 a {
    color: #005DFF;
    font-weight: 500;
    text-decoration: none;
    margin-left: 4px;
}
.right {
    flex-shrink: 0;
}
video {
    width: 350px;
    height: 200px;
    border-radius: 12px;
}

/* <!-- Phần "Why should....." --> */
.why{
    margin-top: 80px;
}
.container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.line {
    width: 250px;
    height: 2px;
    background-color: gray;
}

h2 {
    text-align: center;
    font-size: 36px;
    font-weight: bold;
}
span {
    font-weight: bold;
}
.features {
    display: flex;
    justify-content: center;
    text-align: center;
    padding: 50px 12%;
    flex-wrap: wrap; 
    gap: 20px;
}

.feature {
    width: 30%; 
    min-width: 250px;
}

.feature img {
    width: 60px; 
    margin-bottom: 30px;
}

h3 {
    font-size: 24px;
    font-weight:550;
    color: #6e6c6c;
    max-width: 70%;
    margin: 0 auto; 
    margin-bottom: 15px;
}

p {
    font-size: 16px;
    color: #727272;
    max-width: 90%;
    margin: 0 auto;
    margin-bottom: 15px;
}
/* <!-- Phần "Restaurant....." --> */
.restaurant-title {
    text-align: center;
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 20px;
}
.restaurant {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    background-color: #f0f4ff;
    text-align: center;
    padding: 50px 0 30px 0;
}
button.prev, button.next {
    background-color: white;
    border: none;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.2);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
}
button.prev { left: -50px; }
button.next { right: -50px; }
.restaurant-wrapper {
    overflow: hidden;
    width: 100%;
}

.restaurant-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
}
.card {
    background: white;
    border-radius: 12px;
    padding: 18px 12px;
    min-width: 300px;
    max-width: 360px;
    margin: 0 10px;
    text-align: left;
    height: fit-content;
}
.card span {
    font-size: 14px;
    color: #677642;
    font-weight: 300;
    line-height: 1.6;
}
.card .text p {
    font-size: 13px;
    color: #767474;
    line-height: 1.5;
}
.card-footer {
    display: flex;
    flex-direction: row;
    align-items: center;
    border-top: 1px solid #ddd;
    padding-top: 15px;
    margin-top: 15px;
}

.card-footer img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 10px;
}
/* <!-- ---------------------Phần "Frequently....." --> */
.fre-container {
    max-width: 100%;
    margin: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    font-family: Arial, sans-serif;
}
.fre-title {
    font-size: 36px;
    font-weight: bold;
    text-align: center;
    margin: 50px 0;
}
.item{
    justify-items: center;
}
.fre-item {
    border: 1px solid #f0f0f0;
    border-radius: 12px;
    margin-bottom: 10px;
    background: #fff;
    overflow: hidden;
    transition: all 0.3s ease;
    width: 70%;
}

/* Nút câu hỏi */
.fre-question {
    width: 100%;
    max-width: 1800px;
    background: #fff;
    border: none;
    text-align: left;
    padding: 20px 30px;
    font-size: 18px;
    font-weight: normal; 
    cursor: pointer;
    display: flex;
    align-items: center;
    border-radius: 12px;
    transition: background 0.3s ease;
    justify-content: space-between;
}

.fre-question:hover {
    background: #f8f8f8;
}

.fre-question svg {
    margin-left: auto; 
    margin-left: 100px; 
}

.fre-icon {
    transition: transform 0.3s ease;
}

.fre-item.active .fre-icon {
    transform: rotate(180deg);
}

.fre-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-in-out;
    background: #fff;
    padding: 0 20px;
    text-align: left;
    color: #767C8F;
}
.fre-answer a{
    color:#005DFF;
}
.fre-answer .bold{
    font-weight:bold;
}
.fre-item.active .fre-answer {
    max-height: 500px;
    padding: 15px 20px;
}

.fre-answer p, 
.fre-answer ul {
    margin: 10px 0;
    padding-left: 0;
    font-size: 15px;
}

.fre-answer ul {
    list-style-position: inside;
}

 /* ------------------------Phần footer ------------------------*/
.footer {
    background: #F4F6FB;
    padding: 50px 20px;
    color: #1c1c1c;
    margin-top: 50px;
}
.footer-container {
    max-width: 90%;
    margin: auto;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}
.footer-container .logo {
    filter: brightness(0); 
    width: 90px;
}
.footer .ft-left{
    display: flex;
    flex-direction: column;
    width: 60%;
}
.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr); 
    gap: 20px;
    padding: 20px 0;
}

.footer-column {
    width: 30%;
}

.footer-column h3 {
    font-size: 14px;
    color: black;
    padding: 10px 0;
    white-space: nowrap; 
}

.footer-column ul {
    list-style-type: disc;
    padding-left: 20px;
}


.footer-column ul li {
    margin-bottom: 8px;
    white-space: nowrap; 
}

.footer-column ul li a {
    text-decoration: none;
    color: #666;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: #000000;
}
.footer-contact {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.contact-buttons {
    display: flex;
    flex-direction: row;
    margin-bottom: 20px;
    gap: 10px;
}
.contact-buttons a{
    font-size: 13px;
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-size: 14px;
    background: #ffffff;
    padding: 12px 20px;
    border-radius: 20px;
    font-weight: 500;
    justify-content: center;
    text-decoration: none;
    color:#005DFF;
    border: 1px solid #ddd;
    margin-bottom: 10px;
    transition: background 0.3s ease;
}

.contact-btn:hover {
    background: #e3f2fd;
}
.social-links {
    text-align: right;
    margin-bottom: 30px;
}

.social-links h3 {
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 10px;
}

.icons {
    display: flex;
    justify-content: flex-end;
}

.icons a img {
    width: 25px;
    margin: 0 5px;
    transition: transform 0.3s ease;
}

.icons a:hover img {
    transform: scale(1.1);
}
.app-links {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.app-links img {
    width: 140px;
    margin: 5px;
}

/* Footer Bottom */
.footer-bottom {
    text-align: center;
    margin-top: 30px;
    color: #777;
    padding-top: 10px;
}
.footer-bottom p{
    font-size: 12px;
    border-top: 1px solid rgb(222, 220, 220);
    padding-top: 30PX;
}