/*
 * @Name: GitHub Event Web
 * @Author: Max Base
 * @Repository: https://github.com/BaseMax/GitHubEventWeb
*/

@import url("https://fonts.googleapis.com/css?family=Open+Sans");
* {
    padding: 0;
    margin: 0;
}
*, *:before, *:after {
    box-sizing: border-box;
}
body {
    background: #000;
    color: white;
    font-family: "Open Sans";
}
img {
    border: 0px;
}
li {
    list-style: none;
}
a {
    text-decoration: none;
    cursor: pointer;
    color: inherit;
}
a.underline {
    padding-bottom: 4px;
    color: white;
    border-bottom: 2px solid white;
}
.gradient-subtext {
    background: -webkit-linear-gradient(270.97deg, #FFE580 -21.36%, #FF7571 -2.45%, #EA5DAD 26.84%, #C2A0FD 64.15%, #3BF0E4 108.29%, #B2F4B6 159.03%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.gradient-text {
    /* background: -webkit-linear-gradient(270.97deg, #FFE580 -21.36%, #FF7571 -2.45%, #EA5DAD 26.84%, #C2A0FD 64.15%, #3BF0E4 108.29%, #B2F4B6 159.03%); */
    background: linear-gradient(267.91deg, #FFE57F 9.35%, #FF7170 96.48%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.text-gradient-purple {
    background: linear-gradient(87.54deg, #9867F0 -6.8%, #ED4E50 84.14%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.button {
    font-family: "alliance", mono, sans-serif;
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-transform: none;
    font-weight: 600;
    font-size: 14px;
    padding: 4px 28px;
    height: 56px;
    border-radius: 0;
    overflow: hidden;
    background: transparent;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    font-feature-settings: 'salt' on, 'ss01' on, 'ss02' on;
    color: #fff;
    border: 2px solid #FF7571;
}
.button:hover {
    background: linear-gradient(269.16deg, #FFE580 -15.83%, #FF7571 -4.97%, #FF7270 15.69%, #EA5DAD 32.43%, #C2A0FD 50.09%, #9867F0 67.47%, #3BF0E4 84.13%, #33CE43 105.13%, #B2F4B6 123.24%);
    background-position: 58% 50%;
    background-size: 500%;
    color: black;
}
section.updates {
    text-align: center;
    display: inline-block;
    width: 100%;
    height: auto;
    border-top: 1px solid rgba(66,82,109,0.5);
    border-bottom: 1px solid rgba(66,82,109,0.5);
    padding-top: 45px;
    padding-bottom: 45px;
    color: #B5BFD2;
}
section.updates p.signup-text {
    font-size: 20px;
}
section.updates p.follow-text {
    margin-top: 35px;
}
 /* ✅ Danh sách icon mạng xã hội */
section.updates ul.linear-list {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    list-style: none;
    padding: 0;
    margin-top: 25px;
}

/* ✅ Icon mặc định */
section.updates ul.linear-list li img {
    width: 36px;
    height: 36px;
    border-radius: 50%; /* hình tròn */
    object-fit: cover;
    transition: transform 0.3s ease, filter 0.3s ease;
    filter: brightness(0.9);
}

/* ✅ Hiệu ứng hover */
section.updates ul.linear-list li a:hover img {
    transform: scale(1.1);
    filter: brightness(1.2);
}

footer {
    text-align: center;
    display: inline-block;
    width: 100%;
    height: auto;
    color: #959da5;
}
footer ul {
    width: 100%;
    float: left;
    margin-top: 25px;
    margin-bottom: 25px;
}
footer .logo {
    width: 45px;
    margin-bottom: 10px;
}
footer .copyright {
    width: 100%;
    display: inline-block;
    margin-bottom: 30px;
}
ul.linear-list {

}
ul.linear-list li {
    display: inline-block;
    padding: 10px;
}
header {
    display: inline-block;
    width: 100%;
    height: 70px;
    background: #040303;
    border-bottom: 1px solid rgba(66,82,109,0.5);
    padding-top: 5px;
    padding-bottom: 5px;
}
header nav {
    float: right;
    margin-right: 30px;
}
header nav li {
    display: inline-block;
    margin-left: 9px;
    padding-right: 5px;
    padding-left: 5px;
    padding-top: 20px;
    padding-bottom: 20px;
}
header nav li.active {
    border-bottom: 2px solid #d73a49;
    /* border-bottom: 2px solid #FFE57F;  */
}
section.blog {
    width: 100%;
    float: left;
}
section.blog .subtitle {
    color: #FFE57F;
}
section.blog h1 {
    font-size: 45px;
    color: #FFE57F;
    margin-bottom: 15px;
}
section.blog p {
    text-align: justify;
    line-height: 30px;
    padding-top: 8px;
    padding-bottom: 15px;
}
section.blog .author {
    float: left;
    margin-left: 20px;
    margin-bottom: 35px;
}
section.blog .time {
    color: #B5BFD2;
}
section.blog .author .details {
    float: left;
    margin-left: 15px;
}
section.blog .author h5 {
    width: 100%;
    margin-top: 5px;
    font-size: 19px;
    margin-bottom: 5px;
}
section.blog .author span {
    width: 100%;
}
section.blog .author img {
    float: left;
    width: 70px;
    border-radius: 50%;
}
header .logo {
    width: 250px;
    float: left;
    margin-right: 15px;
    margin-top: 8px;
    margin-left: 25px;
}
header .time {
    float: left;
    line-height: 60px;
    color: #B5BFD2;
}
header .countdown-time {
    float: left;
    line-height: 60px;
    margin-left: 15px;
}
section.sponsors {
    display: inline-block;
    text-align: center;
    width: 100%;
    height: auto;
    background-color: #040303;
    /* border-top: 1px solid rgba(66,82,109,0.5); */
}
section.speakers {
    text-align: center;
    display: inline-block;
    width: 100%;
    height: auto;
    background-color: #040303;
}

section.attends {
    text-align: center;
    display: inline-block;
    width: 100%;
    height: auto;
    background-color: #040303;
    background-image: url('image/why-attend-background.jpg');
    background-position: bottom/left;
    background-attachment: cover;
    background-repeat: no-repeat;
}
section.attends h2 {
    font-size: 59px;
    margin-bottom: 60px;
    margin-top: 45px;
}
section.attends h4 {
    font-size: 29px;
}
section.attends p {
    color: #B5BFD2;
    margin-bottom: 50px;
}
section.content-small {
    height: auto !important;
}
section.content-small h1 {
    margin-top: 0px !important;
}
section.content {
    text-align: center;
    display: inline-block;
    width: 100%;
    height: 500px;
    background-color: #040303;
    background-image: url('pattern-light.svg');
    background-position: center;
    background-attachment: cover;
    background-repeat: no-repeat;
}
section.sponsors h4 {
    font-size: 36px;
    line-height: 96px;
}
section.content h1 {
    font-size: 96px;
    line-height: 96px;
    margin-top: 45px;
    margin-bottom: 25px;
}
section.content p {
    margin-bottom: 15px;
    color: #B5BFD2;
    font-size: 22px;
}

.container {
    width: 90%;
    padding: 45px;
    margin: auto;
}
ul.sponsor-list {
    float: left;
    width: 100%;
    margin-top: 15px;
    margin-bottom: 25px;
}
ul.sponsor-list li {
    width: 25%;
    float: left;
    margin-bottom: 15px;
    width: calc(25% - 16px);
}
ul.sponsor-list li img {
    text-align: center;
    vertical-align: middle;
    /* max-width: 150px; */
    /* max-height: 40px; */
    width: auto;
    max-width: 70%;
    max-height: 80px;
}
ul.sponsor-list li a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 128px;
    position: relative;
    z-index: 1;
    overflow: hidden;
    transition: opacity .3s ease-in-out;
}
hr.gradient {
    background: linear-gradient(269.16deg, #FFE580 -15.83%, #FF7571 -4.97%, #FF7270 15.69%, #EA5DAD 32.43%, #C2A0FD 50.09%, #9867F0 67.47%, #3BF0E4 84.13%, #33CE43 105.13%, #B2F4B6 123.24%);
    height: 8px;
}
hr {
    background: rgba(66,82,109,0.5);
    height: 1px;
    border: none;
}
section.team-list {
    text-align: center;
    display: inline-block;
    width: 100%;
    height: auto;
    z-index: 1;
    background: url(cta-bg.png) center/100% auto no-repeat;
    padding: 120px 0;
}

section.team-list p {
    width: 100%;
    font-size: 24px;
    margin-bottom: 20px;
}

/* ✅ Danh sách team nằm ngang */
section.team-list ul {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 40px; /* Khoảng cách giữa các thành viên */
    flex-wrap: wrap; /* Cho phép xuống dòng nếu không đủ chỗ */
    list-style: none;
    padding: 0;
    margin: 40px auto 0;
    max-width: 1200px;
}

/* ✅ Từng thành viên */
section.team-list li {
    text-align: center;
    max-width: 260px;
}

/* ✅ Ảnh đại diện */
section.team-list li img {
    width: 160px;
    height: 160px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 15px;
    transition: transform 0.3s ease;
}

/* ✅ Hiệu ứng hover nhẹ */
section.team-list li:hover img {
    transform: scale(1.05);
}

section.team-list li h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 8px 0 5px;
}

section.team-list li h4 {
    font-size: 16px;
    font-weight: 500;
    margin: 5px 0;
}

section.team-list li h5 {
    font-size: 14px;
    color: #ccc;
    line-height: 1.4;
}

ul.blog-utilites {
    float: right;
}
ul.blog-utilites li {
    display: inline-block;
    text-align: center;
    margin-left: 7px;
    margin-right: 7px;
}
a.go-back {

}
a.go-back svg {
    float: left;
}
a.go-back span {
    float: left;
    line-height: 24px;
    margin-left: 10px;
}
.clear {
    clear: both;
}
section.faq {
    text-align: center;
    width: 100%;
    height: auto;
}
section.faq h1 {
    font-size: 43px;
    margin-bottom: 39px;
}
ul.faq-question {

}
ul.faq-question li {

}
ul.faq-question svg {
    float: right;
    cursor: pointer;
    margin-top: -35px;
    fill: white;
    transition: transform .6s ease;
}
ul.faq-question h2.faq-title {
    text-align: left;
    font-size: 30px;
    margin-bottom: 15px;
}
ul.faq-question .faq-content {
    text-align: left;
    margin-left: 0px;
    font-weight: 500;
    margin-bottom: 26px;
    color: #959da5;
}
ul.speaker-list {
    width: 100%;
    float: left;
    margin-bottom: 19px;
}
ul.speaker-list li {
    width: 100%;
    height: auto;
    /* float: left; */
    display: inline-block;
    padding-top: 30px;
    padding-bottom: 35px;
    border-bottom: 1px solid rgba(66,82,109,0.5);
}
ul.speaker-list li img {
    width: 110px;
    border-radius: 50%;
    /* border: 3px solid #FFE57F; */
    border: 3px solid #FF7170;
}
ul.speaker-list li h3 {
    text-align: center;
    width: 100%;
    padding-left: 15%;
    padding-right: 15%;
    font-size: 25px;
    color: white;
    margin-bottom: 4px;
}
ul.speaker-list li h4 {
    font-size: 23px;
    color: white;
}
ul.speaker-list li h5 {
    font-size: 20px;
    color: #B5BFD2;
}
section.speakers h1 {
    font-size: 64px;
    line-height: 96px;
    margin-top: 45px;
    margin-bottom: 25px;
}
section.profile {
    float: left;
    width: 100%;
    height: auto;
    margin-bottom: 45px;
}
section.profile .avatar {
    float: left;
    width: 250px;
    border-radius: 10px;
}
section.profile .details {
    width: calc(100% - 275px);
    margin-left: 25px;
    float: left;
}
section.profile h1 {
    font-size: 54px;
    margin-bottom: 8px;
}
section.profile h2 {
    color: #B5BFD2;
    margin-bottom: 25px;
}
section.profile .social {
    margin-top: 25px;
}
section.profile .social svg {
    height: 24px;
    fill: currentColor;
    margin-right: 25px;
}
.event-time {
  text-align: center;
  color: #b5bfd2;
  margin-top: 20px;
  font-family: "Orbitron", sans-serif;
}

.event-time .time {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 15px;
  color: #fff;
}

.event-time .countdown-time {
  font-size: 24px;
  letter-spacing: 2px;
}

.event-time .countdown-time span {
  color: #00d1ff;
  font-weight: bold;
}

.timeline-section {
  text-align: center;
  padding: 80px 20px;
  background: url(cta-bg.png) center/100% auto no-repeat;
  color: #fff;
  border-top: 1px solid rgba(66,82,109,0.5);
}

.timeline-title {
  font-size: 42px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 10px;
  color: #ffffff;
}

.timeline-location {
  font-size: 18px;
  color: #b5bfd2;
  margin-bottom: 40px;
}

.timeline-container {
  display: flex;
  justify-content: center; /* căn giữa toàn bộ */
  align-items: flex-start; /* giữ các box thẳng hàng từ trên cùng */
  gap: 80px; /* khoảng cách giữa 2 box */
  flex-wrap: nowrap; /* luôn giữ trên cùng 1 hàng */
  width: 100%;
  padding: 60px 100px;
  box-sizing: border-box;
}


.timeline-day {
  background: rgba(5, 17, 45, 0.8);
  border-radius: 20px;
  padding: 25px 35px;
  width: 600px;
  border: 2px solid transparent;
  background-clip: padding-box;
  position: relative;
  box-shadow: 0 0 15px rgba(0, 150, 255, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-day::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 20px;
  padding: 2px;
  background: linear-gradient(90deg, #00d1ff, #b400ff);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.timeline-day:hover {
  transform: translateY(-5px);
  box-shadow: 0 0 20px rgba(0, 200, 255, 0.6);
}

.timeline-date {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
  color: #00d1ff;
}

.timeline-list {
  list-style: none;
  padding: 0;
  margin: 0;
  text-align: left;
  color: #e0e6f0;
  font-size: 16px;
  line-height: 1.8;
}

.timeline-list li {
  margin-bottom: 10px;
}

.timeline-list span {
  color: #00d1ff;
  font-weight: 600;
  display: inline-block;
  width: 150px;
}