:root {
  --bg: #000;
  --panel: #0d0d0d;
  --panel-2: #151515;
  --text: #fff;
  --muted: #c8c8c8;
  --line: #2a2a2a;
  --accent: #f5a623;
  --accent-2: #1434a4;
  --danger: #ff5c5c;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  color: var(--text);
  font-family: "Poppins", Arial, sans-serif;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Poppins", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--accent);
}

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

p {
  color: var(--muted);
  font-size: 15px;
  text-align: justify;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text);
  line-height: 1.2;
  margin: 0 0 16px;
}

h2 {
  color: var(--accent);
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 700;
}

section {
  width: 100%;
  padding: 34px 0;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

.page-section {
  padding: 44px 0;
}

.content-feature {
  padding: 44px 0;
  background: var(--bg);
}

.content-feature__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
  gap: 18px;
  align-items: stretch;
}

.content-feature__copy,
.content-feature__media {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #101010;
}

.content-feature__copy {
  padding: clamp(28px, 4vw, 52px);
}

.content-feature__copy p {
  color: var(--muted);
  line-height: 1.8;
  text-align: left;
}

.content-feature__media {
  overflow: hidden;
  min-height: 360px;
}

.content-feature__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.content-feature__media--center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px;
}

.image-panel {
  position: relative;
  overflow: hidden;
  min-height: 560px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background-position: center;
  background-size: cover;
  isolation: isolate;
}

.image-panel::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.6) 42%, rgba(0, 0, 0, 0.08) 78%),
    linear-gradient(0deg, rgba(0, 0, 0, 0.68), rgba(0, 0, 0, 0.04));
  content: "";
}

.image-panel--kolkata {
  background-image: url("../img/Kolkata.png");
}

.image-panel--sciencecity {
  background-image: url("../img/sciencecity.jpg");
}

.image-panel__content {
  max-width: 720px;
  padding: clamp(34px, 6vw, 72px);
}

.image-panel__content p {
  color: #f0f0f0;
  line-height: 1.8;
  text-align: left;
}

.venue-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 320px);
  gap: 18px;
  align-items: end;
}

.venue-panel__qr {
  margin: 0 clamp(24px, 5vw, 54px) clamp(24px, 5vw, 54px) 0;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(12, 12, 12, 0.82);
  text-align: center;
}

.detail-pair {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
  gap: 18px;
  margin-top: 18px;
}

.detail-pair--image-right {
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
}

.detail-pair__content,
.detail-pair__media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #101010;
}

.detail-pair__content {
  padding: clamp(28px, 4vw, 48px);
}

.detail-pair__content h2 {
  color: var(--accent);
  font-size: clamp(26px, 3vw, 38px);
}

.detail-pair__content p {
  color: var(--muted);
  line-height: 1.8;
  text-align: left;
}

.detail-pair__media {
  min-height: 360px;
}

.detail-pair__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-title {
  color: var(--accent);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  margin-bottom: 24px;
  text-align: center;
}

.content-narrow {
  max-width: 960px;
  margin: 0 auto;
}

.content-logo {
  display: block;
  max-height: 76px;
  width: auto;
  margin: 0 auto 24px;
  object-fit: contain;
}

.info-band {
  margin-top: 20px;
  padding: 18px 20px;
  background: var(--accent-2);
  color: var(--text);
  text-align: center;
}

.profile-list {
  list-style: none;
  margin: 0;
  padding: 0;
  column-count: 2;
  column-gap: 54px;
}

.profile-list-panel {
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #101010;
}

.profile-list li {
  break-inside: avoid;
  position: relative;
  margin-bottom: 12px;
  padding-left: 24px;
  color: var(--text);
  line-height: 1.6;
}

.profile-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.profile-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(300px, 0.94fr);
  gap: 14px;
  margin-bottom: 28px;
  padding: 14px;
  border-radius: 8px;
  background: #e8e8e8;
  color: #111;
}

.profile-intro--reverse {
  grid-template-columns: minmax(300px, 0.94fr) minmax(0, 1.06fr);
}

.profile-intro__copy,
.profile-intro__media {
  overflow: hidden;
  border-radius: 8px;
}

.profile-intro__copy {
  background: #f6f6f6;
  padding: clamp(26px, 4vw, 46px);
}

.profile-intro__copy h2 {
  color: #111;
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.1;
}

.profile-intro__copy p {
  color: #272727;
  line-height: 1.75;
  text-align: left;
}

.profile-intro__media {
  min-height: 340px;
  background: #d0d0d0;
}

.profile-intro__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.12) contrast(1.04) brightness(0.94);
}

.profile-list.single-column {
  column-count: 1;
}

.about-left .profile-list {
  margin-top: 12px;
}

.about-right-centered {
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.qr-title {
  color: var(--accent);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

.qr-image {
  max-width: 300px;
  height: auto !important;
  object-fit: contain !important;
}

.social-icons {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin: 12px 0 20px;
}

.social-icon {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  color: var(--text);
  font-weight: 700;
}

.body-inner {
  min-height: 100vh;
  background: var(--bg);
}

.container,
.container-fluid {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

.container-fluid {
  max-width: none;
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -12px;
}

[class*="col-"] {
  width: 100%;
  padding: 0 12px;
}

.col-md-3 {
  flex: 0 0 25%;
  max-width: 25%;
}

.col-md-4 {
  flex: 0 0 33.3333%;
  max-width: 33.3333%;
}

.col-md-6,
.col-lg-6 {
  flex: 0 0 50%;
  max-width: 50%;
}

.col-md-9 {
  flex: 0 0 75%;
  max-width: 75%;
}

.col-md-12,
.col-lg-12 {
  flex: 0 0 100%;
  max-width: 100%;
}

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

.text-white {
  color: var(--text) !important;
}

.text-danger {
  color: var(--danger) !important;
}

.d-none {
  display: none !important;
}

.banner-img {
  display: block;
  width: 100%;
  max-height: 560px;
  object-fit: cover;
}

.about-section {
  background: var(--bg);
  color: var(--text);
  margin: 0;
  padding: 0;
}

.about-section .container-fluid {
  padding: 0;
  margin: 0;
}

.about-row {
  display: flex;
  align-items: stretch;
  margin: 0;
}

.about-left {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 24px 40px;
}

.about-left p {
  color: var(--text);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 15px;
}

.about-title {
  color: var(--accent);
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 20px;
}

.about-right {
  flex: 1;
  display: flex;
}

.about-right img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-pointer {
  margin-top: auto;
  color: var(--text);
  font-size: 15px;
  text-align: right;
}

.image-pointer span {
  color: var(--accent);
  font-weight: 700;
  margin-left: 5px;
}

#topbar {
  background: #fff;
  color: var(--text);
  border-bottom: 1px solid var(--line);
}

.theader {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 110px;
  padding: 18px 0;
}

.tlogo-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.tlogo-group.center {
  flex: 1;
  justify-content: center;
}

.logo-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
}

.logo-title {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.logo-wrapper img {
  display: block;
  max-height: 130px;
  object-fit: contain;
}

.logo {
  display: block;
  object-fit: contain;
}

#header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #080808 !important;
  border-bottom: 1px solid var(--line);
}

.header-inner > .container {
  display: flex;
  align-items: center;
  min-height: 62px;
  gap: 22px;
}

#logo a {
  display: inline-flex;
  align-items: center;
  color: var(--text);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0;
}

#mainMenu {
  flex: 1;
}

#mainMenu .container {
  max-width: none;
  padding: 0;
}

#mainMenu ul {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

#mainMenu li {
  position: relative;
}

#mainMenu nav > ul > li > a,
#mainMenu nav > ul > li > form button {
  display: block;
  padding: 20px 10px;
  color: var(--text);
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  white-space: nowrap;
  cursor: pointer;
}

#mainMenu nav > ul > li > a:hover,
#mainMenu nav > ul > li > a:focus {
  color: var(--accent);
}

.dropdown-menu {
  display: none !important;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 230px;
  background: #111;
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}

.dropdown:hover > .dropdown-menu,
.dropdown.is-open > .dropdown-menu {
  display: block !important;
}

.dropdown-menu li a {
  display: block;
  padding: 11px 14px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.35;
  white-space: normal;
}

.dropdown-menu li a:hover {
  background: var(--panel-2);
  color: var(--accent);
}

#mainMenu-trigger {
  display: none;
  margin-left: auto;
}

#mainMenu-trigger a {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
}

.lines,
.lines::before,
.lines::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  content: "";
}

.lines {
  position: relative;
}

.lines::before,
.lines::after {
  position: absolute;
  left: 0;
}

.lines::before {
  top: -7px;
}

.lines::after {
  top: 7px;
}

.form-group {
  margin-bottom: 14px;
}

label,
small {
  color: var(--text);
}

form label {
  font-size: 16px;
}

.form-check-label {
  color: var(--text);
  display: block;
  margin-bottom: 8px;
}

.form-subtitle {
  color: var(--accent);
  font-size: 20px;
  margin-top: 18px;
}

.form-submit-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  margin-top: 24px;
}

input,
textarea,
select {
  width: 100%;
  min-height: 42px;
  border: 1px solid #444;
  background: #101010;
  color: var(--text);
  padding: 8px 10px;
  font: inherit;
}

textarea {
  min-height: 110px;
}

input[type="checkbox"],
input[type="radio"] {
  width: auto;
  min-height: 0;
  margin-right: 8px;
}

.btn,
button,
input[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border: 1px solid var(--accent-2);
  background: var(--accent-2);
  color: var(--text);
  padding: 9px 18px;
  font-weight: 700;
  cursor: pointer;
}

.btn:hover,
button:hover,
input[type="submit"]:hover {
  filter: brightness(1.1);
}

.list-icon {
  color: var(--muted);
  padding-left: 20px;
}

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

.bg-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  pointer-events: none;
}

.registration-section {
  position: relative;
  background: url("../img/mining.jpg") no-repeat center center;
  background-size: cover;
}

.registration-section .container {
  position: relative;
  z-index: 1;
}

.section-heading {
  padding: 40px 12px;
}

.enquiry-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 150px;
  padding: 26px;
  background: rgba(10, 10, 10, 0.9);
  border: 1px solid var(--line);
  cursor: pointer;
  text-align: center;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.enquiry-box:hover {
  background: var(--panel-2);
  border-color: var(--accent);
  transform: translateY(-4px);
}

.enquiry-icon {
  font-size: 44px;
  margin-bottom: 14px;
}

.enquiry-icon-primary {
  color: #ffc000;
}

.enquiry-title {
  color: var(--text);
  font-size: 18px;
}

#footer {
  background: #181818 !important;
  border-top: 1px solid #333;
  color: var(--text);
  margin-bottom: 20px;
  padding: 8px 0;
}

.sponsor-strip {
  padding: 34px 0;
  background: #fff;
}

.sponsor-strip h2 {
  margin: 0 0 24px;
  color: var(--accent);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  text-align: center;
  letter-spacing: 0;
}

.sponsor-strip img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  background: #fff;
}

.footer-cta {
  width: 100%;
  padding: 34px 0;
  background: var(--accent);
  color: #141414;
}

.footer-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
}

.footer-cta h2 {
  margin: 0 0 8px;
  color: #141414;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
}

.footer-cta p {
  max-width: 700px;
  margin: 0;
  color: #202020;
  font-size: 16px;
  line-height: 1.6;
  text-align: left;
}

.footer-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.footer-cta__actions a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  border: 1px solid rgba(20, 20, 20, 0.32);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.22);
  color: #141414;
  padding: 9px 14px;
  font-weight: 700;
}

.footer-cta__actions a:hover {
  background: rgba(20, 20, 20, 0.12);
  color: #000;
}

.footer-content {
  position: relative;
  padding: 0;
}

.footer-p {
  line-height: 1.5;
}

.footer-p,
.footer-p a {
  color: var(--muted) !important;
}

.footer-p a:hover {
  color: var(--accent) !important;
}

.widget-title {
  color: var(--text);
  font-size: 20px;
  font-weight: 700;
}

.footer-widget {
  margin-top: 7px;
  margin-bottom: 0;
}

.copyright-content {
  min-height: 20px;
  padding: 0 !important;
  background: #101010;
  color: #c0c0c0;
}

.quicklink_reg {
  position: fixed;
  top: 25%;
  right: 0;
  z-index: 1000;
}

.quicklink_reg a,
.quicklink_reg form button {
  display: block;
  width: 100%;
  margin-bottom: 4px;
  border: 0;
  border-radius: 7px 0 0 7px;
  background: var(--accent);
  color: #000;
  padding: 10px;
  font-size: 14px;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.quick-item:hover {
  color: #000 !important;
  filter: brightness(1.05);
}

.blinking {
  animation: blink 2s infinite;
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

#scrollTop {
  display: none;
}

@media (max-width: 900px) {
  .col-md-3,
  .col-md-4,
  .col-md-6,
  .col-md-9,
  .col-lg-6 {
    flex: 0 0 100%;
    max-width: 100%;
  }

  .theader {
    flex-direction: column;
    min-height: 0;
  }

  .tlogo-group {
    flex-wrap: wrap;
    justify-content: center !important;
  }

  #mainMenu-trigger {
    display: block;
  }

  .header-inner > .container {
    flex-wrap: wrap;
  }

  #mainMenu {
    display: none;
    flex: 0 0 100%;
  }

  body.menu-open #mainMenu {
    display: block;
  }

  #mainMenu ul {
    display: block;
  }

  #mainMenu nav > ul > li > a,
  #mainMenu nav > ul > li > form button {
    padding: 13px 0;
    border-top: 1px solid var(--line);
  }

  .dropdown-menu {
    position: static;
    min-width: 0;
    border: 0;
    box-shadow: none;
    background: #101010;
  }

  .content-feature__grid {
    grid-template-columns: 1fr;
  }

  .content-feature__media {
    min-height: 280px;
  }

  .profile-intro,
  .profile-intro--reverse {
    grid-template-columns: 1fr;
  }

  .profile-intro__media {
    min-height: 260px;
  }

  .profile-list {
    column-count: 1;
    column-gap: 0;
  }

  .profile-list-panel {
    padding: 22px 18px;
  }

  .detail-pair,
  .detail-pair--image-right {
    grid-template-columns: 1fr;
  }

  .detail-pair__media {
    min-height: 280px;
  }

  .venue-panel {
    grid-template-columns: 1fr;
  }

  .venue-panel__qr {
    width: min(320px, calc(100% - 40px));
    margin: 0 20px 28px;
  }

  .about-row {
    flex-direction: column;
  }

  .about-left {
    padding: 28px 20px;
  }

  .about-right img {
    height: auto;
  }

  .image-pointer {
    padding-top: 10px;
    text-align: left;
  }

  .footer-cta__inner {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .footer-cta p {
    max-width: none;
  }

  .footer-cta__actions {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
  }

  .footer-cta__actions a {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
}