/* ======= LINK FOR GOOGLE FONTS ======= */
@import url('https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,100;0,300;0,400;0,700;0,900;1,100;1,300;1,400;1,700;1,900&display=swap');

/* ======= GLOBAL STYLES RULES ======= */
:root {
  /* === COLORS === */
  --color-dark: #272a31;
  --color-dark-orange: #ec5242;
  --color-grey: #d3d3d3;
  --color-white: #fff;
  --color-whitesmoke: #f9f9f9;

  /* === FONTS FAMILY === */
  --font-family-1: 'Lato', sans-serif;

  /* === FONTS SIZE === */
  --font-size-1: 60px;
  --font-size-2: 40px;
  --font-size-3: 30px;
  --font-size-4: 16px;
}

/* ======= RESET STYLES ======= */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-size: 20px;
}

a {
  text-decoration: none;
}

li {
  list-style-type: none;
}

button {
  border: 1px solid var(--color-grey);
  outline: var(--color-grey);
}

.logo {
  max-width: 80px;
}

/* ======= CUSTOM CSS PROPERTIES RULES ======= */
.d-flex {
  display: flex;
}

.d-grid {
  display: grid;
}

.separator {
  width: 10%;
  height: 1px;
  background-color: var(--color-dark-orange);
}

.text-small {
  font-size: var(--font-size-4);
}

.bold {
  font-family: var(--font-family-1);
  font-weight: 900;
}

.btn {
  font-size: 1.1rem;
  justify-content: center;
  margin: 1.5em auto;
  padding: 1em 1.5em;
}

/* ==== Mobile S - 320px ==== */
@media screen and (width >= 320px) {
  /* ==== MENU ==== */
  #menu-icon {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 40px;
    height: 40px;
    cursor: pointer;
    background: var(--color-whitesmoke);
    padding: 8px;
    box-shadow: 0 0 9px 0 var(--color-whitesmoke);
    z-index: 100;
  }

  nav {
    position: fixed;
    top: 0;
    left: 0;
  }

  .nav-box {
    flex-direction: column-reverse;
  }

  .menu-top {
    display: none;
  }

  .menu-box {
    width: 0%;
    height: 0;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 5em;
    background: var(--color-white);
    overflow: hidden;
    border-bottom-left-radius: 100%;
    transition: width 1s, height 1s, border-radius 1s;
    z-index: 99;
  }

  .menu-box.menu-open {
    width: 100%;
    height: 100vh;
    border-bottom-left-radius: 0%;
  }

  .menu-box .hidden-item {
    display: none;
  }

  .menu-box ul li {
    text-align: center;
    margin: 15px 0;
    opacity: 0;
    transform: translateY(50px);
  }

  .menu-box.menu-open ul li {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 1s, transform 1s 0.5s;
  }

  .menu-box ul li a {
    display: inline-block;
    text-transform: capitalize;
    font-size: 30px;
    font-weight: 600;
    color: var(--color-dark);
    text-shadow: 0 0 0 red;
    transition: text-shadow 1s, transform 0.5s;
  }

  .menu-box ul li a:hover,
  .menu-box ul li a:focus {
    text-shadow: 0 2px 3px red;
    transform: translateY(-6px);
  }

  .menu-box ul li a.active {
    color: var(--color-dark-orange);
  }

  .section-container {
    flex-direction: column;
    justify-content: flex-start;
    width: 100%;
    padding: 2em 0.5em;
  }

  /* ==== HERO SECTION ==== */
  .hero-section {
    width: 100%;
    height: auto;
    align-items: flex-start;
    justify-content: flex-start;
    background: url("../images/background-1.png") top/cover no-repeat;
    padding: 2em 1em;
    padding-top: 4em;
  }

  .about-page.hero-section {
    text-align: center;
  }

  .about-page.hero-section .separator {
    align-self: center;
    margin: 1em;
  }

  .hero-section .title-box {
    flex-direction: column-reverse;
    color: var(--color-dark-orange);
  }

  .hero-section .subtitle {
    font-size: 1.5rem;
    font-weight: 200;
  }

  .about-page.hero-section .subtitle {
    text-transform: uppercase;
    font-size: 1.9rem;
    font-weight: 900;
  }

  .hero-section .title {
    text-transform: uppercase;
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 2px;
  }

  .hero-section .description {
    margin: 1.5em 0;
    padding: 0.5em;
    border: 4px solid var(--color-white);
    background: var(--color-whitesmoke);
    line-height: 1.3em;
  }

  .hero-event {
    font-size: 1.1rem;
    line-height: 2em;
  }

  .about-page .hero-event {
    line-height: normal;
  }

  .about-page .mail {
    text-decoration: underline;
    font-weight: 600;
  }

  /* ==== MAIN PROGRAM SECTION ==== */
  .section-title {
    font-size: 1.2rem;
  }

  .program-section {
    background: url("../images/background-2.svg") top/cover repeat, var(--color-dark);
    background-size: 100px;
    color: var(--color-white);
    padding: 1.5em 0;
  }

  .program-section .hidden-item {
    display: none;
  }

  .section .title-box {
    flex-direction: column;
    align-items: center;
    gap: 1em;
    position: relative;
  }

  .program-section .section-container {
    grid-template-rows: repeat(5, 7em);
    justify-content: center;
    gap: 1em;
  }

  .card-box {
    grid-template-columns: repeat(2, 47%);
    align-items: center;
    align-content: center;
    gap: 1.5em;
    padding: 0.5em;
  }

  .card-box:hover,
  .card-box:focus {
    border-color: var(--color-white);
  }

  .card-box p {
    font-size: 1.1rem;
    height: 100%;
    width: 100%;
  }

  .program-box {
    border: 2px solid transparent;
    background-color: #d3d3d354;
  }

  .program-icon {
    align-items: center;
    justify-content: space-between;
    justify-self: center;
    margin-right: 1em;
    width: 100%;
    height: 100%;
  }

  .program-icon h3 {
    color: var(--color-dark-orange);
  }

  .program-icon img {
    width: 40%;
    height: 100%;
    object-fit: contain;
  }

  .btn-join-event {
    width: 81%;
    letter-spacing: -1px;
    color: var(--color-white);
    background: var(--color-dark-orange);
  }

  /* ==== FEATURED SPEAKERS SECTION ==== */
  .featured-speakers {
    padding: 1.5em 0;
  }

  .speaker-box {
    grid-template-columns: repeat(2, auto);
    align-items: center;
    justify-items: start;
    gap: 0.7em;
    margin: 0.5em 0;
  }

  .speaker-img {
    width: 100px;
    height: 140px;
    position: relative;
  }

  .speaker-img::before {
    position: absolute;
    content: '';
    width: 45%;
    height: 45%;
    background: url("../images/background-4.svg") center/cover repeat;
    background-size: 11px;
    top: -13%;
    left: -11%;
    z-index: -1;
  }

  .speaker-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .speaker-infos {
    flex-direction: column;
  }

  .speaker-infos h4 {
    font-size: 1.159rem;
    font-weight: 600;
  }

  .speaker-infos .title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark-orange);
  }

  .speaker-infos .description {
    font-size: 1rem;
  }

  .btn-more {
    width: 97%;
    align-items: center;
    gap: 1em;
    text-transform: uppercase;
    color: #000;
    background: var(--color-white);
  }

  .btn-more .down-arrow {
    width: 6px;
    height: 6px;
    border-bottom: 2px solid var(--color-dark-orange);
    border-right: 2px solid var(--color-dark-orange);
    transform: rotate(45deg);
    padding: 0.2em;
    margin-top: -0.5em;
  }

  .btn-more.active .down-arrow {
    transform: rotate(230deg);
    margin-top: -0.2em;
  }

  /* ==== PARTNER SECTION ==== */
  .partner-section {
    color: #d3d3d3ba;
    background: var(--color-dark);
    padding-top: 1em;
    display: none;
  }

  .about-page.partner-section {
    display: block;
  }

  .partner-box {
    max-width: max-content;
    flex-flow: row wrap;
    justify-content: space-evenly;
    align-items: flex-end;
    gap: 1.5em;
    margin: 0 auto;
    font-weight: 600;
    font-size: 1.45rem;
  }

  /* ==== ABOUT LEADER WEEK SECTION ==== */
  .about-leader-week {
    text-align: center;
    padding: 1em 0.5em;
    border-top: 1px solid var(--color-grey);
  }

  .about-leader-week p {
    width: 80%;
    max-width: 450px;
  }

  .about-leader-week img {
    max-width: 250px;
    border: 1px solid var(--color-grey);
    margin: 1em 0;
  }

  /* ==== LATEST EVENTS SECTION ==== */
  .latest-events {
    text-align: center;
    padding: 1em 0.5em;
    border-top: 1px solid var(--color-grey);
  }

  .events-box-container {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1em;
    margin-top: 1em;
  }

  .events-box {
    width: 300px;
    max-width: 300px;
    height: 200px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 1em 0;
    padding: 0 0.5em;
    color: var(--color-white);
    position: relative;
  }

  .events-box::after {
    position: absolute;
    content: '';
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-dark-orange);
    opacity: 0.6;
  }

  .events-box span {
    font-size: 2rem;
    font-weight: 600;
    z-index: 1;
  }

  .events-box p {
    font-size: 1.1rem;
    z-index: 1;
    opacity: 0.9;
  }

  .events-box.box-1 {
    background: url("../images/event-1.jpg") center/cover no-repeat;
  }

  .events-box.box-2 {
    background: url("../images/event-2.jpg") center/cover no-repeat;
  }

  /* ==== FOOTER ==== */
  footer {
    justify-content: center;
    align-items: center;
    gap: 1.5em;
    padding: 2em 0;
    border-top: 1px solid var(--color-grey);
  }

  .home-page.footer-1 {
    display: none;
  }

  .footer-2 {
    display: none;
  }
}

/* ==== Mobile M - 375px ==== */
@media screen and (width >= 375px) {
  .section-container {
    padding: 2em 1em;
  }

  .section-title {
    font-size: 1.5rem;
  }

  /* ==== HERO SECTION ==== */
  .hero-section .title {
    font-size: 2.5rem;
  }

  .about-page.hero-section .subtitle {
    font-size: 2.9rem;
  }

  .hero-event {
    font-size: 1.2rem;
  }

  /* ==== MAIN PROGRAM SECTION ==== */
  .card-box {
    grid-template-columns: repeat(2, 50%);
    gap: 0.5em;
  }

  .card-box p {
    font-size: 1.1rem;
  }

  .card-box h3 {
    font-size: 1.4rem;
  }

  /* ==== FEATURED SPEAKERS SECTION ==== */
  .speaker-box {
    grid-template-columns: 34% 1fr;
    gap: 1.2em;
  }

  .speaker-img {
    width: 110px;
  }

  /* ==== PARTNER SECTION ==== */
  .partner-box {
    font-size: 1.4rem;
    padding: 2em 0;
  }

  .speaker-infos .description {
    font-size: 1.1rem;
  }
}

/* ==== Tablet > 424px ==== */
@media screen and (width > 424px) {
  .hero-section .title {
    font-size: 2rem;
  }

  .about-page.hero-section .subtitle {
    font-size: 2.5rem;
  }

  .hero-section .description {
    font-size: 1.5rem;
  }

  .program-box {
    grid-template-columns: 34% auto;
  }

  .program-box h3 {
    font-size: 1.5rem;
  }

  .program-box p {
    font-size: 1.19rem;
  }

  .btn {
    font-size: 1.2rem;
  }

  .btn-join-event {
    letter-spacing: 1px;
  }

  .section-title {
    font-size: 2rem;
  }

  .speaker-img {
    width: 150px;
  }

  .speaker-box {
    grid-template-columns: repeat(2, auto);
  }

  .speaker-infos h4 {
    font-size: 1.5rem;
  }

  .speaker-infos .title {
    font-size: 1.1rem;
  }

  .speaker-infos .separator {
    width: 30px;
  }

  .speaker-infos .description {
    font-size: 1.2rem;
  }

  .partner-box {
    font-size: 1.7rem;
  }
}

/* ==== Tablet > 424px ==== */
@media screen and (width > 450px) {
  .hero-section {
    height: auto;
  }
}

/* ==== Laptop > 450px and < 768px ==== */
@media screen and (width > 450px) and (width <= 768px) {
  /* ==== HERO SECTION ==== */
  .about-page.hero-section .section-container .title-box {
    margin: auto;
  }
}

/* ==== Laptop > 768px ==== */
@media screen and (width > 768px) {
  /* ==== MENU ==== */
  #menu-icon {
    display: none;
  }

  .menu-top {
    width: 100%;
    background: var(--color-dark);
    z-index: 10000;
    display: flex;
    justify-content: space-evenly;
  }

  .menu-top .hidden-item {
    opacity: 0;
    width: 25vw;
    max-width: 100%;
    height: 2px;
  }

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

  .menu-top ul {
    display: flex;
    align-items: center;
  }

  .menu-top ul li a {
    font-size: small;
    display: inline-block;
    color: var(--color-white);
    padding: 0.3em 0.5em;
    margin: 0.2em;
  }

  .menu-box {
    width: 100%;
    height: auto;
    justify-content: space-evenly;
    align-items: center;
    padding: 0.3em 2em 0.3em 0;
    border-radius: 0;
    box-shadow: 0 1px 15px -6px var(--color-dark);
    top: 0.5em;
    z-index: 1000;
  }

  .menu-box .hidden-item {
    display: block;
  }

  .menu-box .red-bordered {
    padding: 0.3em;
    color: var(--color-dark-orange);
    border: 4px solid var(--color-dark-orange);
  }

  .menu-box ul {
    display: flex;
    align-items: center;
    gap: 1.5em;
  }

  .menu-box ul li {
    opacity: 1;
    transform: translateY(0);
    margin: 0;
  }

  .menu-box ul li a {
    font-weight: 400;
    font-size: 20px;
    text-shadow: none;
  }

  .menu-box ul li a:hover,
  .menu-box ul li a:focus {
    transform: translateY(-3px);
  }

  .section-container {
    max-width: 70%;
    margin: auto;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .title-box .separator {
    width: 30px;
  }

  /* ==== HERO SECTION ==== */
  .hero-section .section-container {
    max-width: 733px;
    margin: 3em;
  }

  .program-section .section-container {
    grid-template-rows: auto;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.3em;
  }

  .featured-speakers .section-container {
    max-width: 100%;
    grid-template-columns: 50% 50%;
    grid-auto-rows: auto;
    gap: 1em;
    justify-items: center;
  }

  .about-page.hero-section .section-container {
    margin: 3em auto;
  }

  .speaker-infos .separator {
    background: var(--color-dark);
    margin: 0.3em 0 0.6em;
  }

  .about-page.hero-section .separator {
    display: none;
  }

  .hero-section .title {
    font-size: 3rem;
  }

  .hero-section .subtitle {
    font-size: 2rem;
    font-weight: 400;
  }

  .about-page.hero-section .subtitle {
    font-size: 3.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
  }

  /* ==== MAIN PROGRAM SECTION ==== */
  .program-section .hidden-item {
    display: block;
    color: var(--color-whitesmoke);
    text-transform: uppercase;
    text-decoration: underline;
    text-align: center;
    padding-bottom: 0.1em;
    margin: 2em 0;
  }

  .card-box {
    align-content: stretch;
  }

  .program-box {
    grid-template-columns: auto;
    grid-template-rows: 48% auto;
    width: 18vw;
    max-width: 200px;
    height: 275px;
    align-items: end;
    text-align: center;
  }

  .program-icon {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    justify-self: normal;
    margin: 0;
  }

  .btn-join-event {
    display: none;
  }

  .home-page.partner-section {
    display: block;
  }

  .about-page.partner-section {
    display: none;
  }

  /* ==== LATEST EVENTS SECTION ==== */
  .speaker-box {
    max-width: 550px;
    gap: 0.5em;
  }

  .speaker-img::before {
    opacity: 0.3;
  }

  .btn-more.hidden-item {
    display: none;
  }

  /* ==== LATEST EVENTS SECTION ==== */
  .events-box-container {
    flex-direction: row;
  }

  /* ==== FOOTER ==== */
  .home-page.footer-1 {
    display: flex;
  }

  .footer-1 {
    display: none;
  }

  .footer-2 {
    display: flex;
    background: var(--color-dark);
    color: var(--color-white);
  }
}

/* ==== Laptop > 1389px ==== */
@media screen and (width > 1389px) {
  .hero-section .section-container {
    margin: 3em 15%;
  }

  .program-box {
    grid-template-rows: 47% auto;
  }
}