body {
  font-family: "Roboto", sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  line-height: 1.6;
  background-color: #f4f4f9;
}

.container {
  width: 80%;
  margin: 0 auto;
}

header {
  background: linear-gradient(45deg, #00796b, #004d40);
  color: #fff;
  padding: 1rem 0;
}

header .logo {
  display: flex;
}

header .logo img {
  width: 50px;
  border-radius: 100%;
}

header .logo h1 {
  margin: 0 0 0 12px;
}

nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: flex-end;
}

nav ul li {
  margin-left: 2rem;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

nav ul li a:hover {
  color: #ff8a65;
}

.banner {
  background: url("assets/banner.jpeg") no-repeat center center/cover;
  color: #fff;
  padding: 5rem 0;
  text-align: center;
}

.banner .cta {
  display: inline-block;
  padding: 1rem 2rem;
  background: #ff8a65;
  color: #fff;
  text-decoration: none;
  border-radius: 5px;
  margin-top: 1rem;
  transition: background 0.3s;
}

.banner .cta:hover {
  background: #ff7043;
}

section {
  padding: 4rem 0;
  text-align: center;
  background-color: #fff;
}

section:nth-child(even) {
  background-color: #f4f4f9;
}

.about,
.program,
.speakers,
.registration,
.venue,
.sponsors,
.contact {
  position: relative;
}

.about::before {
  content: "";
  background: linear-gradient(45deg, #ff8a65, #ff7043);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
}

:root {
  /* conference-banner => 1920 x 715 */
  /* --mb-s: url('assets/conference-banner.jpeg');
  --mb-w: 1920;
  --mb-h: 715; 
  --mb-c: #ffffff44;
  */

  /* conference-banner-02 => 1920 x 700 */
  /* --mb-s: url("assets/conference-banner-02.jpeg");
  --mb-w: 1920;
  --mb-h: 700; 
  --mb-c: #ffffff44;
  */

  /* conference-banner-03 => 1920 x 700 */
  /* --mb-s: url("assets/conference-banner-03.jpeg");
  --mb-w: 1920;
  --mb-h: 700;
  --mb-c: #00000044; */

  /* conference-banner-04 => 1920 x 700 */
  /* --mb-s: url("assets/conference-banner-04.jpeg");
  --mb-w: 1920;
  --mb-h: 700;
  --mb-c: #00000044; */

  /* conference-banner-04 => 1920 x 700 */
  --mb-s: url("assets/conf/INSPIRE-2024-Microsite-Hero-Banner.jpg");
  --mb-w: 1920;
  --mb-h: 700;
  --mb-c: #00000000;
}

.about {
  background-image: var(--mb-s);
  min-height: calc((var(--mb-h) * 100vw) / var(--mb-w));
  min-width: 100%;
  background-size: 100vw calc((var(--mb-h) * 100vw) / var(--mb-w));
  background-repeat: no-repeat;
  padding: 0;
}

.about > div {
  /* padding: 4rem 0; */
  background-color: var(--mb-c);
  min-height: calc((var(--mb-h) * 100vw) / var(--mb-w));
  width: 100%;
  position: absolute;

  display: flex;
  justify-content: space-between;
  flex-direction: column;
  text-align: end;
}

.program::before {
  content: "";
  background: linear-gradient(45deg, #8e44ad, #6a1b9a);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
}

.speakers::before {
  content: "";
  background: linear-gradient(45deg, #f39c12, #f1c40f);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
}

.registration::before {
  content: "";
  background: linear-gradient(45deg, #3498db, #2980b9);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
}

.venue::before {
  content: "";
  background: linear-gradient(45deg, #e74c3c, #c0392b);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
}

.sponsors::before {
  content: "";
  background: linear-gradient(45deg, #1abc9c, #16a085);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
}

.contact::before {
  content: "";
  background: linear-gradient(45deg, #e67e22, #d35400);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
}

:root {
  /* bottom-banner-01 => 1920 x 700 */
  --bb-s: url("assets/Energy-Industry-Clean-and-Efficient.jpeg");
  --bb-w: 1200;
  --bb-h: 550;
  --bb-c: rgba(76, 175, 80, 0.15);
}
.contact {
  background-image: var(--bb-s);
  min-height: calc((var(--bb-h) * 100vw) / var(--bb-w));
  min-width: 100%;
  background-size: 100vw calc((var(--bb-h) * 100vw) / var(--bb-w));
  background-repeat: no-repeat;
  padding: 0;
}

.contact > div {
  /* padding: 4rem 0; */
  background-color: var(--bb-c);
  min-height: calc((var(--bb-h) * 100vw) / var(--bb-w));
  width: 100%;
  position: absolute;

  /* display: flex;
    justify-content: space-between;
    flex-direction: column;
    text-align: end; */
}

h2 {
  color: #333;
  font-weight: 700;
  margin-bottom: 1rem;
}

p {
  color: #555;
}

footer {
  background: #333;
  color: #fff;
  padding: 1rem 0;
  text-align: center;
}

footer .social {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: center;
  margin: 1rem 0 0;
}

footer .social li {
  margin: 0 1rem;
}

footer .social li a {
  color: #fff;
  text-decoration: none;
  transition: color 0.3s;
}

footer .social li a:hover {
  color: #ff8a65;
}

a {
  color: #fff;
  text-decoration: none;
  transition: color 0.3s;
}

a:hover {
  color: #ff8a65;
}

form {
  display: flex;
  flex-direction: column;
  align-items: center;
}

form label {
  margin-top: 1rem;
}

form input,
form textarea {
  width: 100%;
  max-width: 500px;
  padding: 0.5rem;
  margin-top: 0.5rem;
  border: 1px solid #ccc;
  border-radius: 5px;
}

form button {
  padding: 0.75rem 2rem;
  margin-top: 1rem;
  border: none;
  border-radius: 5px;
  background: #00796b;
  color: #fff;
  cursor: pointer;
  transition: background 0.3s;
}

form button:hover {
  background: #004d40;
}

.daily-schedule{
  text-align: left;
}