styles.css

@import url("https://fonts.googleapis.com/css2?family=Kanit:wght@100;200;300;400;500;600;700;800;900&family=Lato:ital,wght@0,100;0,300;0,400;0,700;1,400;1,700&display=swap");

:root {
  --primary: #272a31;
  --secondary: #ec5242;
  --secondary-dark: #cc4030;
  --secondary-darker: #9e2a1d;
  --nutral: #d3d3d3;
  --nutral-darker: #999;
  --text-color: #5b5b5b;
  --sans-font: "Kanit", "sans-serif";
  --serif-font: "Lato", "serif";
}

html {
  scroll-behavior: smooth;
}

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

.no-scroll {
  overflow-y: hidden;
}

.container > * {
  max-width: 992px;
  margin-inline: auto;
}

a {
  text-decoration: none;
  color: var(--primary);
}

body {
  font-size: 16px;
  font-family: var(--serif-font);
  color: var(--text-color);
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--sans-font);
  line-height: 1em;
}

h1 {
  font-size: 3rem;
}

header {
  display: flex;
  flex-direction: column;
  color: var(--primary);
  position: absolute;
  top: 0;
  inset-inline: 0;
  z-index: 9;
}

#secondary-nav-bar {
  background: var(--primary);
  font-size: 0.9rem;
}

#secondary-nav-bar .wrapper {
  display: none;
}

#secondary-nav-bar a {
  color: var(--nutral);
  padding: 0.25rem;
}

#secondary-nav-bar a:hover {
  color: white;
}

#nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

#logo {
  display: none;
}

header nav {
  display: flex;
  flex-direction: column;
  position: fixed;
  inset: 0;
  background: #272a31f7;
  font-size: 2.5rem;
  transform: translateX(-100%);
  transition: transform 300ms;
  overflow-y: auto;
}

header nav.show {
  display: flex;
  transform: translateX(0%);
}

#menu-close-btn {
  color: white;
  font-size: 5rem;
  font-weight: 300;
  line-height: 3rem;
  align-self: start;
  display: block;
  padding: 1rem;
  width: 5rem;
  cursor: pointer;
  margin-bottom: 2rem;
  user-select: none;
}

#nav-bar #menu a {
  color: var(--nutral);
  border-bottom: 1px solid #fff1;
  padding: 1.5rem 3rem;
  font-weight: 300;
}

#nav-bar #menu a.active {
  color: var(--secondary-dark);
}

header #menu-toggler {
  padding: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  border-end-end-radius: 1rem;
  justify-self: start;
  flex-grow: 0;
}

header #menu-toggler svg {
  width: 3rem;
  height: 3rem;
}

section {
  padding: 2rem 1rem;
}

#section1 {
  background: #f7f7f7 url(img/blur-img.png) top center no-repeat;
  padding: 7rem 1rem;
  background-size: cover;
}

#section1 .wrapper {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  z-index: 0;
}

#section1 .shape-set {
  position: absolute;
  z-index: -1;
  bottom: -6rem;
  inset-inline-end: 0;
  width: 65%;
}

#section1 h1,
#section1 h2 {
  color: var(--secondary);
}

#section1 h1 {
  font-weight: 700;
  text-shadow: 0.03em 0.03em 0.02em #0009;
  background-image: url("img/check.png");
  background-size: cover;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

#section1 h2 {
  order: -1;
  font-weight: 300;
}

#section1 .description {
  border: 0.25rem solid white;
  background-color: #f7f7f7;
  padding: 1rem;
  font-weight: 600;
}

#section1 h3 {
  font-size: 1.5rem;
  font-weight: 900;
}

#section1-about {
  padding: 7rem 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
}

#section1-about .shape-set {
  position: absolute;
  z-index: -1;
  top: 0;
  inset-inline-end: -4rem;
  transform: rotate(45deg);
  width: 65%;
}

#section1-about h1,
#section1-about h2 {
  color: var(--secondary);
}

#section1-about h2 {
  order: -1;
  font-weight: 300;
}

#section1-about .description {
  border: 0.125rem solid #eee;
  background-color: white;
  padding: 1rem;
  font-weight: 600;
}

#section1-about .description p {
  margin-bottom: 0.75em;
}

#section1 .location {
  font-weight: 500;
  font-size: 1.1rem;
}

.section-heading {
  font-size: 2rem;
  font-weight: 400;
  position: relative;
  padding-bottom: 1rem;
  color: var(--primary);
  text-align: center;
}

.section-heading::after {
  border-bottom: 2px solid var(--secondary);
  position: absolute;
  height: 1px;
  width: 3rem;
  content: "";
  bottom: 0;
  inset-inline-start: 50%;
  margin-inline-start: -1.5rem;
}

#program {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  background-color: var(--primary);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='52' height='52' viewBox='0 0 52 52'%3E%3Cpath fill='%2321242d' fill-opacity='1' d='M0 17.83V0h17.83a3 3 0 0 1-5.66 2H5.9A5 5 0 0 1 2 5.9v6.27a3 3 0 0 1-2 5.66zm0 18.34a3 3 0 0 1 2 5.66v6.27A5 5 0 0 1 5.9 52h6.27a3 3 0 0 1 5.66 0H0V36.17zM36.17 52a3 3 0 0 1 5.66 0h6.27a5 5 0 0 1 3.9-3.9v-6.27a3 3 0 0 1 0-5.66V52H36.17zM0 31.93v-9.78a5 5 0 0 1 3.8.72l4.43-4.43a3 3 0 1 1 1.42 1.41L5.2 24.28a5 5 0 0 1 0 5.52l4.44 4.43a3 3 0 1 1-1.42 1.42L3.8 31.2a5 5 0 0 1-3.8.72zm52-14.1a3 3 0 0 1 0-5.66V5.9A5 5 0 0 1 48.1 2h-6.27a3 3 0 0 1-5.66-2H52v17.83zm0 14.1a4.97 4.97 0 0 1-1.72-.72l-4.43 4.44a3 3 0 1 1-1.41-1.42l4.43-4.43a5 5 0 0 1 0-5.52l-4.43-4.43a3 3 0 1 1 1.41-1.41l4.43 4.43c.53-.35 1.12-.6 1.72-.72v9.78zM22.15 0h9.78a5 5 0 0 1-.72 3.8l4.44 4.43a3 3 0 1 1-1.42 1.42L29.8 5.2a5 5 0 0 1-5.52 0l-4.43 4.44a3 3 0 1 1-1.41-1.42l4.43-4.43a5 5 0 0 1-.72-3.8zm0 52c.13-.6.37-1.19.72-1.72l-4.43-4.43a3 3 0 1 1 1.41-1.41l4.43 4.43a5 5 0 0 1 5.52 0l4.43-4.43a3 3 0 1 1 1.42 1.41l-4.44 4.43c.36.53.6 1.12.72 1.72h-9.78zm9.75-24a5 5 0 0 1-3.9 3.9v6.27a3 3 0 1 1-2 0V31.9a5 5 0 0 1-3.9-3.9h-6.27a3 3 0 1 1 0-2h6.27a5 5 0 0 1 3.9-3.9v-6.27a3 3 0 1 1 2 0v6.27a5 5 0 0 1 3.9 3.9h6.27a3 3 0 1 1 0 2H31.9z'%3E%3C/path%3E%3C/svg%3E");
  color: var(--nutral);
  text-align: center;
}

#program .section-heading {
  color: white;
}

#program .items {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

#program .item {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: stretch;
  background-color: #fff1;
  padding: 1rem;
  text-align: start;
}

#program .item-icon {
  height: 3rem;
  flex-grow: 0;
}

#program .item-icon svg {
  height: 100%;
  color: white;
}

#program .item-title {
  color: var(--secondary);
  flex-grow: 1;
  font-size: 1.5rem;
}

#program .item-description {
  color: white;
  flex-basis: 55%;
  font-weight: 500;
}

#program .cta {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1.5rem 3rem;
  background-color: var(--secondary);
  color: white;
  font-size: 1.5rem;
  font-weight: 600;
  align-self: center;
}

#speakers {
  color: var(--primary);
}

#speakers .wrapper {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

#speakers .persons {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

#speakers .person {
  display: flex;
  gap: 1rem;
}

#speakers .person.mobile-hide {
  display: none;
}

#speakers .person-graphic {
  position: relative;
}

#speakers .person-graphic::before {
  position: absolute;
  top: -0.5rem;
  inset-inline-start: -0.5rem;
  width: calc(6 * 8px + 4px);
  height: calc(6 * 8px + 4px);
  content: "";
  z-index: -1;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3E%3Cg fill='%23000000' fill-opacity='.2'%3E%3Cpath fill-rule='evenodd' d='M0 0h4v4H0V0zm4 4h4v4H4V4z'/%3E%3C/g%3E%3C/svg%3E");
}

#speakers .person img {
  width: 7rem;
  height: 7rem;
  background-color: var(--secondary);
  flex-shrink: 0;
}

#speakers .person-info {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

#speakers .person-name {
  font-size: 1.3rem;
  font-weight: 500;
}

#speakers .person-title {
  color: var(--secondary-dark);
  font-weight: 700;
  padding-bottom: 0.75rem;
  position: relative;
}

#speakers .person-title::after {
  border-bottom: 2px solid var(--nutral);
  position: absolute;
  height: 1px;
  width: 1rem;
  content: "";
  bottom: 0;
  inset-inline-start: 0;
}

#speakers .person-bio {
  color: var(--primary);
  opacity: 0.8;
  font-size: 0.9rem;
}

#speakers .more {
  border: 1px solid var(--nutral);
  border-radius: 0.25rem;
  padding: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  text-transform: uppercase;
  gap: 0.5rem;
}

#speakers .more svg {
  height: 1.5rem;
  color: var(--secondary);
}

#sponsors {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background-color: #333;
  color: var(--nutral);
  padding: 2rem 1rem;
}

#sponsors .section-heading {
  color: var(--nutral);
}

#sponsors .sponsors-list {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 2rem;
  margin-top: 2rem;
}

#sponsors .sponsors-list img {
  opacity: 0.25;
  transition: opacity 300ms;
  width: 28rem;
}

#partners .partners-list img {
  opacity: 0.25;
  transition: opacity 300ms;
  width: 28rem;
}

#sponsors .sponsors-list img:hover {
  opacity: 0.75;
}

#partners {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background-color: #333;
  color: var(--nutral);
  padding: 2rem 1rem;
}

#partners .section-heading {
  color: var(--nutral);
}

#partners .partners-list {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 2rem;
  margin-top: 2rem;
}

#partners .partners-list img:hover {
  opacity: 0.75;
}

footer {
  padding: 3rem 2rem;
}

#can {
  background: #fff;
  color: #333;
}

#brand {
  color: #fff;
}

#brand-about {
  color: #333;
}

footer .wrapper.wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

footer .branding {
  color: var(--primary);
  font-family: var(--sans-font);
  font-weight: 800;
  font-size: 1.25rem;
  line-height: 1em;
  flex-shrink: 0;
  flex-basis: 7rem;
}

.standout {
  padding-block: 4rem;
  background-color: var(--primary);
  color: white;
}

.standout .wrapper.wrapper {
  display: flex;
  align-items: center;
  max-width: 40rem;
  gap: 2rem;
  padding-inline: 1rem;
}

.standout .wrapper .icon {
  width: 6rem;
  height: 6rem;
}

.standout .wrapper .info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.standout .wrapper .info .title {
  color: var(--secondary);
}

#diff {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: center;
}

#diff .other-programs {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

#diff .program {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  justify-content: center;
  align-items: center;
  min-height: 13rem;
  position: relative;
  overflow: hidden;
}

#diff .other-programs .program img {
  position: absolute;
  inset: 0;
  object-fit: cover;
  object-position: center center;
  width: 100%;
  height: 100%;
  transform: scale(1.05);
  transition: 400ms ease-in-out;
}

#diff .other-programs .program:hover img {
  transform: scale(1);
  filter: blur(0.15rem);
}

#diff .other-programs .cover {
  position: absolute;
  inset: 0;
  mix-blend-mode: multiply;
  background-color: var(--secondary-darker);
}

#diff .other-programs .program h3 {
  font-size: 4rem;
  font-weight: 100;
  color: white;
  z-index: 1;
}

#diff .other-programs .program p {
  color: white;
  z-index: 1;
}

@media (min-width: 768px) {
  .no-scroll {
    overflow-y: auto;
  }

  header {
    background-color: white;
    box-shadow: 0 0.2rem 1rem #0003;
    flex-direction: column;
    position: fixed;
  }

  #secondary-nav-bar .wrapper {
    display: flex;
    justify-content: end;
    align-items: center;
    gap: 0.5rem;
  }

  header #menu-toggler {
    display: none;
  }

  #nav-bar {
    width: 100%;
    max-width: 992px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-inline: auto;
  }

  #logo {
    display: block;
    font-family: var(--sans-font);
    font-weight: 500;
    font-size: 2rem;
    padding: 1rem 2rem;
  }

  #logo span {
    color: var(--secondary);
    font-weight: 200;
  }

  #menu {
    display: flex;
    flex-direction: row;
    background: none;
    position: unset;
    font-size: 1rem;
    transform: translateX(0%);
  }

  #menu-close-btn {
    display: none;
  }

  #nav-bar #menu a {
    padding: 2rem 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 600;
    color: var(--primary);
    transition: color 300ms;
  }

  #nav-bar #menu a.home-link {
    display: none;
  }

  #nav-bar #menu a:hover {
    color: var(--nutral-darker);
  }

  section {
    padding: 4rem 1rem;
  }

  #section1 {
    padding-top: 12rem;
  }

  #section1 .shape-set {
    top: 55%;
    inset-inline-start: 28rem;
    width: auto;
  }

  #section1 h1 {
    font-size: 4rem;
    max-width: 40rem;
  }

  #section1 h2 {
    font-size: 2.5rem;
  }

  #section1 .description {
    max-width: 30rem;
  }

  #section1 h3 {
    font-size: 2rem;
    font-weight: 500;
  }

  #program .items {
    flex-direction: row;
    justify-content: center;
    flex-grow: 0;
    gap: 0.2rem;
  }

  #program .item {
    flex-direction: column;
    flex-basis: 11rem;
    text-align: center;
  }

  #program .item-description {
    font-size: 0.85rem;
  }

  #speakers .persons {
    flex-direction: row;
    flex-wrap: wrap;
  }

  #speakers .person {
    flex-basis: calc(50% - 2rem);
  }

  #speakers .person.mobile-hide {
    display: flex;
  }

  #speakers .more {
    display: none;
  }

  #section1-about {
    margin-top: 4rem;
  }

  #section1-about .shape-set {
    width: auto;
  }

  #section1-about .description {
    max-width: 40rem;
    margin-inline: auto;
  }

  #diff .other-programs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  #sponsors .sponsors-list img {
    width: 50rem;
  }

  #can {
    background: #333;
    color: #fff;
  }

  #brand {
    color: #fff;
  }

  #brand-about {
    color: #fff;
  }

  #partners {
    display: none;
  }
}