:root {
  color-scheme: dark;
  --casino-bg: #111a1f;
  --casino-nav: #172329;
  --casino-panel: #1a2a31;
  --casino-panel-hover: #21353d;
  --casino-line: #2b444d;
  --casino-text: #f0f4f3;
  --casino-muted: #b9c8cb;
  --casino-green: #2ecc90;
  --casino-green-hover: #43d9a3;
  --casino-green-ink: #09241b;
}

html { scroll-behavior: smooth; }
body {
  padding-top: 0 !important;
  background: var(--casino-bg) !important;
  color: var(--casino-text) !important;
  font-family: "DM Sans", "Segoe UI", sans-serif !important;
}
::selection { background: var(--casino-green); color: var(--casino-green-ink); }
a { color: var(--casino-green); }
a:hover { color: var(--casino-green-hover); }
:focus-visible { outline: 2px solid var(--casino-green); outline-offset: 3px; }
main[role="main"] {
  min-height: calc(100vh - 140px);
  padding-top: 76px;
}
main[role="main"] h1,
main[role="main"] h2,
main[role="main"] h3,
main[role="main"] h4 { font-family: "DM Sans", "Segoe UI", sans-serif; }

.navbar.casino-navbar {
  min-height: 76px;
  background: var(--casino-nav) !important;
  border-bottom: 1px solid #263c43;
  box-shadow: none;
}
.casino-nav-inner {
  width: min(1364px, calc(100% - 9vw));
  max-width: none;
  padding: 0;
}
.casino-navbar .navbar-brand {
  margin-right: 1rem;
  color: var(--casino-text) !important;
  font-size: clamp(1.2rem, 1.75vw, 1.55rem);
  font-weight: 800;
  letter-spacing: -.045em;
  white-space: nowrap;
}
.casino-navbar .navbar-brand span { color: var(--casino-green); }
.casino-navbar .nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 75px;
  padding: 0 1.05rem !important;
  color: #cad6d8 !important;
  font-size: .96rem;
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
  transition: color .18s ease;
}
.casino-navbar .nav-link:hover,
.casino-navbar .nav-link:focus-visible,
.casino-navbar .nav-link.active { color: var(--casino-text) !important; }
.casino-navbar .nav-link.active::after {
  content: "";
  position: absolute;
  right: 1.05rem;
  bottom: 18px;
  left: 1.05rem;
  height: 2px;
  background: var(--casino-green);
}
.casino-navbar .casino-nav-login {
  min-height: 42px;
  padding: .55rem 1.2rem !important;
  margin-left: .7rem;
  border: 0;
  border-radius: 6px;
  background: var(--casino-green);
  color: var(--casino-green-ink) !important;
  font-weight: 700;
}
.casino-navbar .casino-nav-login:hover {
  background: var(--casino-green-hover);
  color: var(--casino-green-ink) !important;
}
.casino-navbar .navbar-toggler { border-color: var(--casino-line); }

@media (min-width: 1100px) {
  .casino-nav-primary {
    position: absolute;
    left: 50%;
    margin: 0 !important;
    transform: translateX(-50%);
  }
}
@media (min-width: 768px) {
  .casino-navbar .navbar-collapse,
  .casino-nav-primary,
  .casino-nav-account { align-items: center; }
  .casino-nav-account { margin-left: auto !important; }
}
@media (min-width: 768px) and (max-width: 1099px) {
  .casino-navbar .navbar-brand { margin-right: .5rem; }
  .casino-navbar .nav-link { padding-inline: .6rem !important; font-size: .89rem; }
  .casino-navbar .casino-nav-login { padding-inline: .85rem !important; }
}

.casino-home {
  min-height: calc(100vh - 76px);
  padding: 36px 0 62px;
  background: var(--casino-bg);
}
.casino-home * { box-sizing: border-box; }
.casino-shell { width: min(1364px, calc(100% - 9vw)); margin-inline: auto; }
.casino-hero,
.casino-mission {
  border: 1px solid var(--casino-line);
  border-radius: 7px;
  background: var(--casino-panel);
}
.casino-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  align-items: center;
  min-height: 488px;
  padding: clamp(2.5rem, 5vw, 4.6rem);
  overflow: hidden;
}
.casino-hero-copy { position: relative; z-index: 2; max-width: 680px; }
.casino-kicker {
  margin: 0 0 17px;
  color: var(--casino-muted);
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
}
.casino-kicker::before,
.casino-mission::before {
  content: "";
  display: block;
  width: 27px;
  height: 2px;
  margin-bottom: 19px;
  background: var(--casino-green);
}
body .casino-home h1 {
  margin: 0;
  color: var(--casino-text) !important;
  font-size: clamp(3.15rem, 5.4vw, 4.3rem) !important;
  font-weight: 800 !important;
  line-height: 1.08 !important;
  letter-spacing: -.055em !important;
  text-transform: none !important;
}
.casino-hero-lead {
  margin: 22px 0 0;
  color: #d5e0e0;
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  line-height: 1.5;
}
.casino-hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 26px; margin-top: 36px; }
body .casino-home .casino-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  border-radius: 6px;
  font-size: .95rem;
  font-weight: 700;
  text-decoration: none;
  transition: background .18s ease, color .18s ease, transform .18s ease;
}
body .casino-home .casino-button:hover { transform: translateY(-2px); }
body .casino-home .casino-button-primary {
  padding: .85rem 2.1rem;
  background: var(--casino-green);
  color: var(--casino-green-ink) !important;
}
body .casino-home .casino-button-primary:hover { background: var(--casino-green-hover); }
body .casino-home .casino-button-text {
  gap: 15px;
  color: var(--casino-green) !important;
}
body .casino-home .casino-button-text:hover { color: var(--casino-green-hover) !important; }
.casino-hero-art {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: 330px;
}
.casino-orbit {
  position: absolute;
  width: min(100%, 515px);
  aspect-ratio: 1;
  border: 1px solid rgba(46, 204, 144, .24);
  border-radius: 50%;
}
.casino-orbit::before {
  content: "";
  position: absolute;
  inset: 11%;
  border: 1px dashed rgba(46, 204, 144, .19);
  border-radius: 50%;
}
.casino-orbit::after {
  content: "";
  position: absolute;
  top: 17%;
  left: 16%;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--casino-green);
}
.casino-hero-art img {
  position: relative;
  z-index: 1;
  width: min(112%, 560px);
  max-width: none;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 18px 22px rgba(0, 0, 0, .23));
}
.casino-mission {
  margin-top: 30px;
  padding: 54px clamp(2.5rem, 5vw, 4.6rem) 59px;
  scroll-margin-top: 110px;
}
.casino-mission::before { margin-bottom: 28px; }
.casino-mission p { max-width: 1170px; }
.casino-mission-lead {
  margin: 0;
  color: var(--casino-text);
  font-size: clamp(1.25rem, 2.1vw, 1.9rem);
  font-weight: 700;
  line-height: 1.47;
  letter-spacing: -.028em;
}
.casino-mission-detail {
  margin: 32px 0 0;
  color: #d3dfe0;
  font-size: clamp(1rem, 1.5vw, 1.32rem);
  line-height: 1.65;
}

/* Native CTFd pages keep their structure and receive the same colors. */
.jumbotron {
  margin-bottom: 0 !important;
  padding: 2.8rem 0 1.8rem !important;
  background: #16242a !important;
  border-bottom: 1px solid var(--casino-line);
}
.jumbotron h1 { color: var(--casino-text) !important; font-weight: 800; letter-spacing: -.04em; }
.card, .modal-content, .dropdown-menu, .list-group-item {
  background: var(--casino-panel) !important;
  color: var(--casino-text) !important;
  border-color: var(--casino-line) !important;
}
.card-header, .modal-header, .modal-footer { border-color: var(--casino-line) !important; }
.modal .nav-tabs { border-color: var(--casino-line) !important; }
.modal .nav-tabs .nav-link {
  color: var(--casino-muted) !important;
  background: transparent !important;
  border-color: transparent !important;
}
.modal .nav-tabs .nav-link:hover { color: var(--casino-text) !important; }
.modal .nav-tabs .nav-link.active {
  color: var(--casino-green) !important;
  background: #15272d !important;
  border-color: var(--casino-line) var(--casino-line) #15272d !important;
}
.challenge-button {
  background: var(--casino-panel) !important;
  color: var(--casino-text) !important;
  border: 1px solid var(--casino-line) !important;
  border-radius: 7px !important;
  box-shadow: none !important;
  transition: background .18s ease, border-color .18s ease, transform .18s ease;
}
.challenge-button:hover {
  transform: translateY(-2px);
  background: var(--casino-panel-hover) !important;
  border-color: var(--casino-green) !important;
}
.challenge-solved { border-color: var(--casino-green) !important; }
.challenge-button .challenge-inner { font-weight: 600; }
.btn-primary, .btn-success {
  background: var(--casino-green) !important;
  border-color: var(--casino-green) !important;
  color: var(--casino-green-ink) !important;
  font-weight: 700;
}
.btn-primary:hover, .btn-success:hover {
  background: var(--casino-green-hover) !important;
  border-color: var(--casino-green-hover) !important;
}
.btn-outline-primary {
  color: var(--casino-green) !important;
  border-color: var(--casino-green) !important;
}
.btn-outline-primary:hover { background: var(--casino-green) !important; color: var(--casino-green-ink) !important; }
.form-control, .form-select, .input-group-text, input, select, textarea {
  background-color: #111e23 !important;
  color: var(--casino-text) !important;
  border-color: #3d555d !important;
}
.form-control:focus, .form-select:focus, input:focus, select:focus, textarea:focus {
  border-color: var(--casino-green) !important;
  box-shadow: 0 0 0 .2rem rgba(46, 204, 144, .19) !important;
}
.form-control::placeholder, input::placeholder, .form-text, .text-muted { color: var(--casino-muted) !important; }
.table { color: var(--casino-text) !important; }
.table th, .table td { border-color: var(--casino-line) !important; }
.table thead th { color: var(--casino-green) !important; }
.alert { border-color: var(--casino-line); }
.casino-footer {
  margin-top: 0 !important;
  padding: 22px 0 !important;
  background: #0f171b;
  border-top: 1px solid var(--casino-line);
  color: var(--casino-muted);
  font-size: .77rem;
  font-weight: 600;
  letter-spacing: .08em;
}

@media (prefers-reduced-motion: no-preference) {
  .casino-hero-copy { animation: casino-enter .6s ease-out both; }
  .casino-hero-art { animation: casino-enter .7s .08s ease-out both; }
  .casino-kicker::before { animation: casino-signal 9s steps(2, end) infinite; }
}
@keyframes casino-enter {
  from { opacity: .75; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes casino-signal {
  0%, 96%, 100% { transform: translateX(0); opacity: 1; }
  97% { transform: translateX(3px); opacity: .6; }
  98% { transform: translateX(-2px); opacity: 1; }
}
@media (max-width: 1050px) {
  .casino-hero { grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); }
  .casino-hero-art img { width: min(120%, 500px); }
}
@media (max-width: 800px) {
  .casino-shell, .casino-nav-inner { width: calc(100% - 36px); }
  .casino-hero { grid-template-columns: 1fr; min-height: auto; padding: 42px 32px 28px; }
  .casino-hero-art { min-height: 265px; }
  .casino-hero-art img { width: min(90%, 430px); }
  .casino-orbit { width: min(75%, 350px); }
  .casino-mission { padding: 42px 32px 46px; }
}
@media (max-width: 767px) {
  .casino-navbar .navbar-brand { margin-right: 0; }
  .casino-navbar .navbar-collapse { padding: 10px 0 18px; }
  .casino-navbar .nav-link { min-height: 44px; padding: .6rem 0 !important; }
  .casino-navbar .nav-link.active::after { right: auto; bottom: 4px; left: 0; width: 46px; }
  .casino-navbar .casino-nav-login { min-height: 42px; margin: 8px 0 0; padding: .55rem 1rem !important; }
}
@media (max-width: 520px) {
  .casino-home { padding-top: 18px; }
  .casino-hero { padding: 34px 22px 20px; }
  .casino-kicker { font-size: .72rem; letter-spacing: .11em; text-wrap: balance; }
  body .casino-home h1 { font-size: clamp(2.65rem, 11vw, 3.6rem) !important; }
  .casino-hero-actions { align-items: flex-start; flex-direction: column; gap: 9px; margin-top: 25px; }
  .casino-hero-art { min-height: 220px; }
  .casino-mission { margin-top: 18px; padding: 32px 22px 36px; }
  .casino-mission-detail { margin-top: 23px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0s !important; transition-duration: 0s !important; }
}