@charset "UTF-8";
@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@300;400;500;600;700;800;900&family=Noto+Sans:wght@400;500;600;700&display=swap');
/* ====== Table of content Start =====*/
/*
Project Name: Quizo
File        : CSS Base
Version     : 1.0.0
Author      : jthemes (https://themeforest.net/user/jthemes)
*/
/* ====== Table of content End =====*/
/* Default transition */
.wrapper {
    width: 100%;
    min-height: 100vh;
    background: linear-gradient(to bottom, #f6e1ab 10px, #f2f2f2 60%, #f6e1ab);
    margin: 0 auto;
    overflow: hidden;
}

.step {
    width: 15rem;
    height: 0.75rem;
    display: inline-block;
}

    .step:not(:last-child) {
        margin-right: 3rem;
    }

    .step.active {
        background-color: #ffc533 !important;
    }

    .step.finish {
        background-color: #ffc533 !important;
    }

.multisteps_form_panel {
    display: none;
}

.question_number {
    padding-top: 5rem;
}

span {
    color: #000;
    font-size: 1.25rem;
    font-weight: 700;
    padding-bottom: 1rem;
    -webkit-transition: 0.8s cubic-bezier(0.25, 1, 0.5, 1);
    transition: 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

h1 {
    color: #000a38;
    font-size: 4.204375rem;
}

.form_items li {
    width: 100%;
    color: #000a38;
    font-size: 1.3125rem;
    padding: 0.9375rem 3rem;
    margin-top: 1.25rem;
    position: relative;
    cursor: pointer;
}

    .form_items li:after {
        content: "";
        width: 1.7rem;
        height: 1.7rem;
        top: 50%;
        left: 14px;
        -webkit-transform: translateY(-50%);
        transform: translateY(-50%);
        position: absolute;
        border-radius: 100%;
        border: 2px solid #e2e2e2;
    }

    .form_items li:before {
        content: "";
        top: 48%;
        left: 18px;
        -webkit-transform: translateY(-50%);
        transform: translateY(-50%);
        position: absolute;
        color: #ffc533;
        font-size: 1.2rem;
        font-weight: 900;
        font-family: "Font Awesome 5 Free";
        display: none;
    }

    .form_items li label {
        cursor: pointer;
    }

    .form_items li input {
        display: none;
    }

    .form_items li.active:before {
        display: block;
    }

.f_btn {
    color: #000a38;
    font-size: 1.25rem;
    font-weight: 800;
    padding: 0.9375rem 1.5625rem;
    outline: none;
    background-color: #ffc533;
    margin-right: 0.625rem;
    margin-bottom: 2rem;
    -webkit-transition: 0.8s cubic-bezier(0.25, 1, 0.5, 1);
    transition: 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

    .f_btn:hover {
        color: #ffc533;
        background-color: #ffffff;
    }

body {
    color: #000000;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.65;
    font-style: normal;
    font-display: swap;
    font-family: "Be Vietnam Pro", "Noto Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-optical-sizing: auto;
    font-variation-settings: "wdth" 100;
    background-color: #ffffff;
}

.official-banner {
    background: #0F5E8C;
    line-height: 0;
    text-align: center;
}

.official-banner-image {
    display: block;
    height: auto;
    margin: 0 auto;
    width: 100%;
}

a,
button,
input {
    cursor: pointer;
    text-decoration: none;
}

    a:hover,
    button:hover,
    input:hover {
        text-decoration: none;
    }

    a:focus,
    button:focus,
    input:focus {
        outline: none;
    }

ul > li {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: "Be Vietnam Pro", "Noto Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-weight: 700;
    letter-spacing: 0;
}

img {
    max-width: 100%;
    height: auto;
}

.animate_50ms {
    -webkit-animation-delay: 50ms;
    animation-delay: 50ms;
}

.animate_100ms {
    -webkit-animation-delay: 100ms;
    animation-delay: 100ms;
}

.animate_150ms {
    -webkit-animation-delay: 150ms;
    animation-delay: 150ms;
}

.animate_200ms {
    -webkit-animation-delay: 200ms;
    animation-delay: 200ms;
}

.animate_250ms {
    -webkit-animation-delay: 250ms;
    animation-delay: 250ms;
}

@media (min-width: 1500px) {
    .container {
        max-width: 1510px;
    }
}

/* ==================================================
*   01 - media screen and (max-width: 1500px)
*   02 - media screen and (max-width: 1400px)
*	03 - media screen and (max-width: 1200px)
*	04 - media screen and (max-width: 992px)
*	05 - media screen and (max-width: 768px)
*	06 - media screen and (max-width: 576px)
*	07 - media screen and (max-width: 380px)
*   XX-Large devices (larger desktops)
*   No media query since the xxl breakpoint has no upper bound on its width
================================================== */
@media screen and (max-width: 1499.98px) {
    .step_progress .step {
        width: 12rem;
    }

        .step_progress .step:not(:last-child) {
            margin-right: 2.8rem;
        }
}

@media screen and (max-width: 1399.98px) {
    .step_progress .step {
        width: 12rem;
    }

        .step_progress .step:not(:last-child) {
            margin-right: 2.8rem;
        }

    span {
        font-size: 1.2rem;
        padding-bottom: 0.8rem;
    }

    h1 {
        font-size: 4rem;
    }

    .form_items li {
        font-size: 1.2rem;
        padding: 0.8375rem 3rem;
    }

    .f_btn {
        font-size: 1.18rem;
        font-weight: 700;
        padding: 0.7375rem 1.3625rem;
    }
}

@media screen and (max-width: 1199.98px) {
    .step_progress .step {
        width: 10rem;
    }

        .step_progress .step:not(:last-child) {
            margin-right: 2.6rem;
        }

    span {
        font-size: 1.15rem;
        padding-bottom: 0.6rem;
    }

    h1 {
        font-size: 3.5rem;
    }

    .form_items li {
        font-size: 1rem;
        padding: 0.7375rem 3rem;
    }

    .f_btn {
        font-size: 1.15rem;
        font-weight: 700;
        padding: 0.8375rem 1.4625rem;
    }
}

@media screen and (max-width: 991px) {
    .step_progress .step {
        width: 6.5rem;
    }

        .step_progress .step:not(:last-child) {
            margin-right: 2rem;
        }

    span {
        font-size: 1rem;
    }

    h1 {
        font-size: 3.5rem;
        font-weight: 600;
    }

    .form_items li {
        font-size: 1rem;
    }

    .f_btn {
        font-size: 1rem;
        font-weight: 600;
        padding: 0.7375rem 1.3625rem;
    }
}

@media screen and (max-width: 767px) {
    .step_progress .step {
        width: 5rem;
    }

        .step_progress .step:not(:last-child) {
            margin-right: 1.5rem;
        }

    span {
        font-size: 0.8rem;
    }

    h1 {
        font-size: 2.5rem;
        font-weight: 500;
    }

    .form_items li {
        font-size: 0.8rem;
    }

    .f_btn {
        font-size: 0.8rem;
        font-weight: 500;
        padding: 0.5375rem 1.1625rem;
    }
}

@media screen and (max-width: 575px) {
    span {
        font-size: 0.8rem;
    }

    h1 {
        font-size: 2rem;
        font-weight: 500;
    }

    .f_btn {
        font-size: 0.6rem;
        padding: 0.5375rem 1.1625rem;
    }
}

/*lỗi margin của boostrap.*/
.row {
    margin-right: 0 !important;
    margin-left: 0 !important;
}

.ml-20 {
    margin-left: 20px;
}

.top-bar {
    max-height: 54px;
    background-color: var(--third-color);
    border-radius: 35px;
    padding: 14px 0px;
    margin-bottom: 1.8rem;
    width: 100%;
    padding-right: calc(var(--bs-gutter-x) * .5);
    padding-left: calc(var(--bs-gutter-x) * .5);
    display: flex !important;
    align-items: baseline;
}

.icon-top {
    width: 10%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.bar-left {
    width: 70%
}

.bar-right {
    width: 30%;
    padding-right: 20px;
}

.top-bar a {
    color: var(--primary-color);
}

    .top-bar a:hover {
        color: #dadada;
    }

.page-title {
    background-color: #0C245F;
    padding: 20px 0;
    margin: 0 auto;
    color: #fff;
    font-size: 1.5rem;
    text-align: center;
}

    .page-title p {
        margin: 0;
        font-weight: 900;
        font-size: 1.5rem;
        text-shadow: 0 3px 8px #000;
    }

a#logo img {
    max-width: 90px;
}

a#logo {
    position: absolute;
    left: -90px;
}

.text-right {
    text-align: right;
}

h2.thi-title {
    font-size: 3rem;
    font-weight: bolder;
    margin-top: 80px;
    text-wrap: nowrap;
}

h3.thi-title {
    font-weight: 300;
    font-size: 1.5rem;
    color: #000;
    font-family: 'Book Antiqua';
}

.company {
    margin-left: -45px;
    margin-right: 100px;
    font-weight: 600;
    color: #000;
    font-size: .75rem;
    line-height: 20px;
    border-right: 2px solid;
    padding-right: 4px;
}

.is-divider {
    height: 2px;
    width: 100%;
    background-color: #000;
    margin-bottom: 20px;
}

main, body, .nav-main {
    background-color: var(--third-color);
}

section.container {
    max-width: 1100px;
}

.title-gioithieu h2 {
    color: var(--primary-color);
}

.title-gioithieu p {
    font-weight: bold;
    font-size: 1.1rem;
}

.description-text p {
    font-weight: bold;
}

.nav-main .img-banner {
    width: 100vw;
}

.gioi-thieu .is-divider {
    width: 100%;
    height: 1px
}

p.p-footer {
    letter-spacing: 4px;
    color: #015401;
}

.noi-dung-thi {
    background-image: url(../2-vector-hoa-sen-1.png);
    background-repeat: repeat;
    background-size: auto;
    position: relative;
    padding: 30px 0;
    margin: 50px 0;
}

    .noi-dung-thi::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgb(255 255 255 / 86%);
        z-index: 1;
    }

    .noi-dung-thi .row {
        background-color: #ffffff00;
        z-index: 999;
        position: relative;
    }

.col-12.css-corner {
    position: absolute;
    left: 0;
    background-color: #F4D593;
    width: 151px;
    height: 140px;
    padding-top: 57px;
    border-top-right-radius: 100%;
    font-family: 'Time New Roman';
    font-weight: bold;
}

p.p-footer, footer .is-divider {
    margin-top: 90px;
}

.widget-chart {
    border-left: solid 1px #cecaca;
    padding: 0px 10px;
}

.noi-dung-thi .row .col-md-8 h3 {
    padding-left: 20px;
}

.counter div {
    min-width: 100px;
    margin: 10px;
    padding: 1.5rem 1rem;
    text-align: center;
    box-shadow: 7px 2px 5px rgba(0, 0, 0, .1);
    color: #d24545;
    font-size: 2rem;
    border: 1px solid #adadad;
}

    .counter div p {
        margin-bottom: -5px;
        font-weight: bold;
    }

    .counter div .counter-p {
        font-size: 20px;
        color: #fff;
    }

.counter {
    display: flex;
    justify-content: center;
    align-items: center;
}

.rulefix a {
    font-size: 1rem !important;
}

.check-dangnhap {
    background-color: #f8fafffa;
    color: #020202;
    display: inline-block;
    padding: 10px 20px;
    border-radius: 20px;
}

p.text-left.flex-grow-1 {
    color: #973f3f;
    font-size: 1.5rem;
    font-weight: 700;
    padding-left: 10px;
    text-decoration: underline;
}

.grid-cols-12.shadow-md.grid {
    display: flex;
    background-color: #fff;
    border-radius: 20px;
    padding: 8px 20px;
    margin-bottom: 20px;
    border: 1px solid #adadad;
}

.grid-cols-12 .col-span-4 {
    flex-grow: 1;
}

.col-rank:nth-child(4), .col-rank:nth-child(2), .col-rank:nth-child(3) {
    background-color: #03577d1f !important;
    box-shadow: 1px 2px 5px #adadad !important;
    border: none !important;
}

span.hidden.md\:inline-block {
    color: #d24545;
    padding-left: 20px;
}

.col-12.col-md-8.section-demnguoc h3 {
    color: #973F3F;
}

span.line-clamp-1 {
    color: #000;
    font-size: 1rem;
}

.img-brand {
    max-height: 30px;
    margin-right: -20px;
}

.widget-chart .widget-title {
    background-color: #e0ebef !important;
    margin-left: -10px;
    font-weight: 700 !important;
    color: #bf2e1a !important;
}

.widget-chart img {
    max-width: 100px;
    height: auto;
}

.widget-chart h5 {
    font-size: 1rem;
    padding: 10px;
    color: #000;
}

ul.widget-chart li {
    display: flex;
    justify-content: flex-start;
    margin-bottom: 10px;
}

.accordion {
    color: #97090e;
    cursor: pointer;
    padding: 18px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 15px;
    transition: 0.4s;
    margin-bottom: 5px;
}


.panel {
    padding: 0 18px;
    display: none;
    background-color: white;
    transition: all .3s linear;
    opacity: 0;
}

footer.my-4 {
    background-color: #973F3F;
    color: #fff;
    padding: 25px 0 10px;
    font-weight: 700;
}

.panel p {
    font-size: .9rem;
}

.icon-down {
    position: absolute;
    right: 20px;
    margin-top: 16px;
    background-color: #e78787;
    padding: 5px 12px;
    border-radius: 50%;
    color: #fff;
    font-weight: bolder;
}

.icon-change {
    transform: rotateZ(90deg);
}

.d-flex.accordionpr {
    padding-right: 0 !important;
    padding-left: 0 !important;
    position: relative;
}

.icon-top.col-12 img {
    max-width: 100px;
}

/*css mobile*/
@media screen and (max-width: 600px) {
    .top-bar {
        background-color: #62889900;
        padding: 14px 0px !important;
    }

    .bar-left {
        width: 60%;
        padding: 0 !important;
    }

    .top-bar a {
        font-size: .8rem;
    }

    .bar-right {
        width: 40%;
        padding-right: 0;
    }

    .widget-chart {
        margin: 0 !important;
    }

    .section-demnguoc h3 {
        margin-top: 15px;
    }

    span.line-clamp-1 {
        font-size: .8rem;
    }

    .page-title p {
        font-size: 0.6rem;
        padding: 0 10px;
    }

    p.text-left.flex-grow-1 {
        font-size: 1.2rem;
    }

    h3 {
        font-size: 1.2rem;
    }

    .top-bar {
        padding: 12px 12px 10px 0px !important;
        border: 1px solid #0C245F;
        margin-bottom: 25px;
        background-color: #0C245F;
        border-radius: 20px;
    }

    .icon-top.col-12 img {
        max-width: 50px;
    }

    .row > * {
        padding-right: 5px;
        padding-left: 5px;
    }

    .grid-cols-12.shadow-md.grid {
        padding: 8px 10px;
    }

    .widget-chart .widget-title {
        font-size: 1.2rem !important;
    }

    .widget-chart .widget-content-list ul li span {
        font-size: 1.2rem;
    }

    .bottom > p {
        font-size: 11px !important;
    }

    .widget-chart h5 {
        font-size: .9rem;
        padding-right: 0;
    }

    .counter span {
        padding: 10px 0px !important;
        font-size: 1.7rem;
    }

    .rulefix a {
        font-size: .8rem !important;
    }

    .bar-left ul {
        padding-left: 10px;
    }

    .icon-top {
        width: 20%;
    }

    .bar-left {
        width: 50%;
    }

    .counter div {
        min-width: 60px;
        padding: 1.5rem 0.3rem;
    }

        .counter div p {
            font-size: 1.3rem !important;
        }

    .btn-kqthi {
        display: grid !important;
    }

    .last-kq {
        padding: 10px 15px;
    }

    #app .text-end {
        max-width: 30%;
    }
}

section#app .card.mb-3 .text-end h5 {
    color: #d24545;
    font-size: 1rem;
}

.btn-primary {
    color: #fff;
    background-color: #973f3f !important;
    border-color: #973f3f !important;
}

input[type="text"], textarea, button {
    outline: none !important;
    box-shadow: none !important;
}

.accordion {
    padding: 0;
}

hr.sep-3 {
    border: none;
    height: 1px;
    background-image: linear-gradient(to right, #f0f0f0, #8f8f8f, #f0f0f0);
}

    hr.sep-3::after {
        content: '§';
        display: inline-block;
        position: absolute;
        left: 50%;
        transform: translate(-50%, -50%) rotate(60deg);
        transform-origin: 50% 50%;
        padding: 1rem;
        background-color: white;
    }

section.banner {
    padding: 16px 0px;
    margin-top: -40px;
}

:root {
    --primary-color: #96241D;
    --second-color: #F3B534;
    --third-color: #F4DFAA
}

@media screen and (max-width: 1320px) {
    a#logo {
        position: relative;
        left: 0;
    }

    .company {
        padding-right: 4px;
        text-align: left;
        border: none;
        padding-left: 50px;
        margin-bottom: -70px;
    }
}

@media screen and (min-width: 769px) {
    .hide-for-desktop {
        display: none !important
    }
}

@media screen and (max-width: 768px) {
    .hide-for-mobile {
        display: none !important
    }

    h2.thi-title {
        font-size: 1.5rem;
    }

    h3.thi-title {
        font-size: 1rem;
    }

    footer .is-divider {
        display: none;
    }

    p.p-footer {
        letter-spacing: 0px;
    }
}

.menu-mobile {
    background-color: var(--primary-color);
}

.child-top {
    flex: 1;
    padding: 10px 8px;
    margin: 5px;
}

.button.secondary {
    background-color: var(--second-color);
    padding: 7px 10px;
    border-radius: 2px;
    color: #fff;
    text-decoration: none !important;
    font-size: .8rem !important;
}
/**side bar*/
.sidebar {
    position: fixed;
    top: 0;
    left: -250px; /* Ẩn div ra khỏi màn hình */
    width: 250px;
    height: 100%;
    background-color: #EDF2FA;
    color: var(--primary-color);
    transition: left 0.3s ease;
    padding: 15px;
    padding-top: 40px
}

    .sidebar ul {
        list-style-type: none;
        padding: 0;
    }

        .sidebar ul li {
            margin: 20px 0;
        }

            .sidebar ul li a {
                color: var(--primary-color);
                text-decoration: none;
                font-size: 1rem;
                margin-right: 15px;
            }

    .sidebar.open {
        left: 0; /* Khi mở, div xuất hiện từ bên trái */
    }

#close-icon {
    font-size: 24px;
    cursor: pointer;
    position: absolute;
    top: 10px;
    right: 10px;
}

.social-icons {
    display: flex;
    align-items: center;
    width: 250px; /* Độ rộng của khung chứa */
    margin: 0 auto; /* Canh giữa */
}

.social-icon {
    color: white;
    font-size: 24px;
    text-decoration: none;
    transition: color 0.3s ease;
}

    .social-icon:hover {
        color: #009DAC; /* Màu khi hover (theo sở thích của bạn) */
    }

h2.menu-title {
    color: #fff;
    margin: 0 0 20px 0;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

/* Banner styles */
.banner-section {
    position: relative;
    width: 100%;
    background-color: var(--third-color);
    overflow: hidden;
}

.banner-background {
    position: relative;
    background-color: var(--third-color);
    background-image: 
        radial-gradient(circle at 25px 25px, rgba(151, 63, 63, 0.1) 2%, transparent 5%),
        radial-gradient(circle at 75px 75px, rgba(151, 63, 63, 0.1) 2%, transparent 5%);
    background-size: 100px 100px;
    max-width: 1500px;
    margin: 0 auto;
    padding: 1.5rem;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(151, 63, 63, 0.1) 0%, rgba(244, 223, 170, 0.2) 100%);
    z-index: 1;
}

.banner-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    margin-bottom: 0;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    z-index: 2;
    transform: translateY(0);
    transition: transform 0.3s ease;
}

.banner-wrapper {
    display: block;
    width: 100%;
    max-height: 100%;
}

.banner-wrapper img {
    display: block;
    width: 100%;
    height: auto;
    transition: transform 0.5s ease;
}

.banner-container:hover {
    transform: translateY(-5px);
}

.banner-container:hover .banner-wrapper img {
    transform: scale(1.02);
}

@media screen and (max-width: 768px) {
    .banner-section {
        padding: 1rem 0;
    }
    
    .banner-container {
        margin-bottom: 0;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    }
}

/* Contest Info Section Styles */
.contest-info {
    position: relative;
}

.contest-info-wrapper {
    position: relative;
    background-color: #fff;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}
 

.contest-info-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
    background-image: 
        url('/images/vector-hoa-sen.png'), linear-gradient(to right, rgba(255, 255, 255, 0.5), rgba(242, 157, 0, 0.5));
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    z-index: 0;
    background-size: contain;
}

.contest-info-content {
    position: relative;
    z-index: 1;
}

.contest-title {
    color: var(--primary-color);
    font-weight: 700;
    position: relative;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.contest-title:after {
    content: '';
    position: absolute;
    width: 60px;
    height: 3px;
    background-color: var(--second-color);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 3px;
}

.contest-time-boxes {
    margin: 1.5rem 0;
}

.box-time-start, .box-time-end {
    background-color: #fff;
    border: 1px solid rgba(151, 63, 63, 0.2);
    border-radius: 10px;
    padding: 1rem 1.5rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    min-width: 160px;
}

.box-time-start:hover, .box-time-end:hover {
    box-shadow: 0 5px 15px rgba(151, 63, 63, 0.2);
    border-color: var(--primary-color);
}

.box-time-start .top, .box-time-end .top {
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.box-time-start .bottom .time, .box-time-end .bottom .time {
    font-size: 2rem;
    font-weight: 700;
    color: var(--second-color);
}

.box-time-start .bottom .date, .box-time-end .bottom .date {
    font-size: 1.5rem;
    color: #666;
}

.counter {
    display: flex;
    justify-content: center;
    margin: 1.5rem 0;
}

.counter-item {
    min-width: 100px;
    margin: 0 10px;
    padding: 1rem;
    text-align: center;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(151, 63, 63, 0.15);
    border: 2px solid rgba(255, 197, 51, 0.3);
    transition: all 0.3s ease;
}

.counter-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(151, 63, 63, 0.2);
    border-color: var(--second-color);
}

.counter-item p {
    margin: 0;
    color: var(--primary-color);
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.2;
}

.counter-item .counter-p {
    font-size: 1rem;
    color: #666;
    font-weight: 500;
    margin-top: 5px;
}

.check-dangnhap {
    display: inline-block;
    background-color: rgba(151, 63, 63, 0.1);
    color: var(--primary-color);
    font-weight: 700;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    box-shadow: 0 3px 10px rgba(151, 63, 63, 0.1);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.check-dangnhap:hover {
    background-color: var(--primary-color);
    color: #fff;
    box-shadow: 0 5px 15px rgba(151, 63, 63, 0.3);
}

.contest-action a {
    color: var(--primary-color);
    font-weight: 600;
    transition: all 0.2s ease;
    text-decoration: none !important;
}

.contest-action a:hover {
    color: var(--second-color);
}

@media screen and (max-width: 768px) {
    .contest-info-wrapper {
        padding: 1.5rem 1rem;
    }
    
    .contest-title {
        font-size: 1.2rem;
    }
    
    .box-time-start, .box-time-end {
        min-width: 130px;
        padding: 0.8rem 1rem;
    }
    
    .counter-item {
        min-width: 70px;
        margin: 0 5px;
        padding: 0.8rem 0.5rem;
    }
    
    .counter-item p {
        font-size: 1.8rem;
    }
    
    .counter-item .counter-p {
        font-size: 0.8rem;
    }
    
    .check-dangnhap {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }
}
button.btn.btn-highlight {
    background: var(--primary-color);
    color: #fff;
}
button.btn.btn-cauhoi {
    background-color: var(--second-color);
    padding: 0px 5px;
    color: #fff;
    font-size: .8rem;
    width: 27px;
}
.ch-last {
    width: auto !important;
    background-color: #0080ff !important;
}
.ch-current{
    background-color:gray!important
}
.only-mobile{
    display:none;
}
@media screen and (max-width: 549px){
    .only-PC{
        display: none!important;
    }
    .only-mobile {
        display: block!important;
    }
}