/*!
 * LUN4R CTF — "Lun4R"
 * CTFd theme overlay. Loaded after the core bundle, no build step required.
 * Palette: deep night indigo, moonlight silver, ceremonial gold.
 */

/* ============================================================
   1. TOKENS
   ============================================================ */
:root,
[data-bs-theme="dark"] {
  color-scheme: dark;

  --l4r-void: #06070e;
  --l4r-night: #0a0d18;
  --l4r-panel: #0e1220;
  --l4r-slate: #171c2e;
  --l4r-stone: #1d2338;
  --l4r-line: rgba(198, 207, 226, 0.15);
  --l4r-line-soft: rgba(198, 207, 226, 0.08);

  --l4r-moon: #f4f7fd;
  --l4r-silver: #c6cfe2;
  --l4r-ash: #8e99b3;
  --l4r-gold: #e6c88a;
  --l4r-gold-hi: #f8e9c6;
  --l4r-azure: #86a8dc;
  --l4r-solved: #7fe3c0;

  --l4r-radius: 10px;
  --l4r-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --l4r-ease-soft: cubic-bezier(0.4, 0, 0.2, 1);

  /* Bootstrap 5.3 dark-mode overrides — cascades into every component */
  --bs-body-bg: var(--l4r-void);
  --bs-body-color: #e4e9f4;
  --bs-emphasis-color: #ffffff;
  --bs-secondary-color: var(--l4r-ash);
  --bs-secondary-bg: var(--l4r-slate);
  --bs-tertiary-color: #74809b;
  --bs-tertiary-bg: var(--l4r-night);
  --bs-border-color: var(--l4r-line);
  --bs-border-color-translucent: rgba(198, 207, 226, 0.18);

  --bs-primary: var(--l4r-gold);
  --bs-primary-rgb: 230, 200, 138;
  --bs-primary-text-emphasis: var(--l4r-gold-hi);
  --bs-primary-bg-subtle: #1d1a10;
  --bs-primary-border-subtle: #443c22;

  --bs-link-color: var(--l4r-silver);
  --bs-link-color-rgb: 198, 207, 226;
  --bs-link-hover-color: var(--l4r-gold-hi);
  --bs-link-hover-color-rgb: 248, 233, 198;

  --bs-card-bg: var(--l4r-panel);
  --bs-card-border-color: var(--l4r-line);
  --bs-heading-color: #fbfcff;

  --bs-success: var(--l4r-solved);
  --bs-success-rgb: 127, 227, 192;
  --bs-danger: #ff7b8a;
  --bs-danger-rgb: 255, 123, 138;
  --bs-info: var(--l4r-azure);
  --bs-info-rgb: 134, 168, 220;
  --bs-warning: var(--l4r-gold);
  --bs-warning-rgb: 230, 200, 138;

  --bs-modal-bg: var(--l4r-panel);
  --bs-modal-border-color: var(--l4r-line);
  --bs-dropdown-bg: rgba(14, 18, 32, 0.97);
  --bs-dropdown-border-color: var(--l4r-line);
  --bs-dropdown-link-color: #e4e9f4;
  --bs-dropdown-link-hover-bg: rgba(230, 200, 138, 0.13);
  --bs-dropdown-link-hover-color: var(--l4r-gold-hi);

  --l4r-font-display: "Cinzel Decorative", "Cinzel", "Palatino Linotype", Georgia, serif;
  --l4r-font-body: "Outfit", "Lato", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --l4r-font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}

/* ============================================================
   2. BASE
   ============================================================ */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--l4r-font-body);
  font-weight: 350;
  background-color: var(--l4r-void);
  color: #e4e9f4;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--l4r-font-display);
  font-weight: 700;
  letter-spacing: 0.05em;
}

a {
  transition: color 0.28s var(--l4r-ease-soft), text-shadow 0.28s var(--l4r-ease-soft);
}

a:hover {
  color: var(--l4r-gold-hi);
  text-shadow: 0 0 16px rgba(230, 200, 138, 0.5);
}

code, kbd, pre, samp, .text-monospace {
  font-family: var(--l4r-font-mono) !important;
}

::selection {
  background: rgba(230, 200, 138, 0.26);
  color: #fff;
}

::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--l4r-void); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #2b3350, #171c2e);
  border: 2px solid var(--l4r-void);
  border-radius: 9px;
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #4a5578, #2b3350);
}

hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(198, 207, 226, 0.4), rgba(230, 200, 138, 0.35), transparent);
  opacity: 1;
}

/* ============================================================
   3. BACKDROP STAGE — the moonlit night
   ============================================================ */
.l4r-stage {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background: var(--l4r-void);
}

.l4r-stage > * {
  position: absolute;
  inset: 0;
}

.l4r-night {
  background:
    radial-gradient(130% 90% at 18% 6%, rgba(134, 168, 220, 0.2) 0%, transparent 55%),
    radial-gradient(90% 70% at 88% 0%, rgba(96, 116, 170, 0.14) 0%, transparent 58%),
    linear-gradient(180deg, #0a0e1c 0%, #070912 46%, #04050b 100%);
}

.l4r-skyfield { opacity: 1; }

/* --- The full moon --- */
.l4r-moon {
  position: absolute;
  top: 4vh;
  left: 7vw;
  width: min(30vh, 22vw);
  aspect-ratio: 1;
  min-width: 130px;
}

.l4r-moon-halo {
  position: absolute;
  inset: -120%;
  border-radius: 50%;
  background: radial-gradient(circle,
    rgba(214, 228, 250, 0.24) 0%,
    rgba(180, 200, 240, 0.11) 24%,
    rgba(140, 165, 215, 0.05) 44%,
    transparent 66%);
  filter: blur(18px);
  animation: l4r-breathe 11s var(--l4r-ease-soft) infinite;
}

@keyframes l4r-breathe {
  0%, 100% { opacity: 0.78; transform: scale(1); }
  50%      { opacity: 1;    transform: scale(1.07); }
}

.l4r-moon-rays {
  position: absolute;
  inset: -70%;
  border-radius: 50%;
  background: conic-gradient(from 0deg,
    transparent 0deg, rgba(226, 236, 255, 0.09) 9deg, transparent 20deg,
    transparent 62deg, rgba(226, 236, 255, 0.06) 71deg, transparent 84deg,
    transparent 140deg, rgba(230, 200, 138, 0.07) 150deg, transparent 164deg,
    transparent 220deg, rgba(226, 236, 255, 0.07) 231deg, transparent 244deg,
    transparent 300deg, rgba(230, 200, 138, 0.05) 311deg, transparent 326deg);
  filter: blur(14px);
  animation: l4r-rays 90s linear infinite;
  mix-blend-mode: screen;
}

@keyframes l4r-rays {
  to { transform: rotate(360deg); }
}

.l4r-moon-disc {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 30%, #ffffff 0%, #eef2fb 32%, #d3dced 62%, #a9b6cf 88%, #8d9ab6 100%);
  box-shadow:
    0 0 60px rgba(214, 228, 250, 0.45),
    0 0 160px rgba(180, 200, 240, 0.24),
    inset -14px -12px 44px rgba(70, 84, 116, 0.55),
    inset 8px 8px 26px rgba(255, 255, 255, 0.35);
  overflow: hidden;
}

/* craters */
.l4r-moon-disc::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 30% 26%, rgba(126, 141, 173, 0.5) 0 5%, transparent 6%),
    radial-gradient(circle at 62% 40%, rgba(126, 141, 173, 0.42) 0 7%, transparent 8%),
    radial-gradient(circle at 44% 64%, rgba(126, 141, 173, 0.46) 0 4%, transparent 5%),
    radial-gradient(circle at 70% 70%, rgba(126, 141, 173, 0.34) 0 6%, transparent 7%),
    radial-gradient(circle at 22% 52%, rgba(126, 141, 173, 0.3) 0 3%, transparent 4%),
    radial-gradient(circle at 52% 20%, rgba(255, 255, 255, 0.4) 0 4%, transparent 5%);
  mix-blend-mode: multiply;
  opacity: 0.75;
}

/* terminator shimmer drifting across the face */
.l4r-moon-disc::after {
  content: "";
  position: absolute;
  inset: -30%;
  background: linear-gradient(115deg,
    transparent 38%, rgba(255, 255, 255, 0.34) 50%, transparent 62%);
  background-size: 260% 100%;
  animation: l4r-moon-sheen 14s var(--l4r-ease-soft) infinite;
  mix-blend-mode: screen;
}

@keyframes l4r-moon-sheen {
  0%   { background-position: 180% 0; opacity: 0; }
  18%  { opacity: 0.75; }
  60%  { opacity: 0.5; }
  100% { background-position: -120% 0; opacity: 0; }
}

/* --- Drifting mist --- */
.l4r-mist span {
  position: absolute;
  left: -30%;
  right: -30%;
  height: 34vh;
  background-repeat: repeat-x;
  background-size: 900px 100%;
  filter: blur(24px);
  opacity: 0.5;
  will-change: transform;
}

.l4r-mist span:nth-child(1) {
  bottom: -6vh;
  background-image: radial-gradient(60% 100% at 20% 60%, rgba(198, 207, 226, 0.17), transparent 70%),
                    radial-gradient(50% 90% at 62% 70%, rgba(160, 180, 220, 0.14), transparent 72%),
                    radial-gradient(45% 80% at 88% 55%, rgba(198, 207, 226, 0.12), transparent 70%);
  animation: l4r-mist-a 62s linear infinite;
}

.l4r-mist span:nth-child(2) {
  bottom: 6vh;
  height: 26vh;
  background-image: radial-gradient(55% 100% at 34% 60%, rgba(170, 190, 230, 0.13), transparent 70%),
                    radial-gradient(48% 90% at 76% 50%, rgba(198, 207, 226, 0.11), transparent 72%);
  animation: l4r-mist-b 88s linear infinite;
  opacity: 0.42;
}

@keyframes l4r-mist-a {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(900px, 0, 0); }
}
@keyframes l4r-mist-b {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(-900px, 0, 0); }
}

/* --- Lun4R temple colonnade --- */
.l4r-temple {
  top: auto;
  bottom: 0;
  height: 40vh;
  min-height: 240px;
}

.l4r-temple svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* moonlight catching the top edge of each capital */
.l4r-rim {
  animation: l4r-rim-glow 9s var(--l4r-ease-soft) infinite;
}

@keyframes l4r-rim-glow {
  0%, 100% { opacity: 0.34; }
  50%      { opacity: 0.72; }
}

/* --- Hieroglyph band --- */
.l4r-glyphs {
  top: auto;
  bottom: 0;
  height: 92px;
  overflow: hidden;
  opacity: 0.16;
  mask-image: linear-gradient(90deg, transparent, #000 14%, #000 86%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 14%, #000 86%, transparent);
}

.l4r-glyphs-track {
  display: flex;
  width: max-content;
  animation: l4r-glyph-scroll 120s linear infinite;
}

@keyframes l4r-glyph-scroll {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(-50%, 0, 0); }
}

.l4r-glyphs-track svg {
  height: 92px;
  width: auto;
  flex: 0 0 auto;
}

/* Cursor moonlight */
.l4r-cursor {
  background: radial-gradient(320px circle at var(--l4r-mx, 50%) var(--l4r-my, 0%),
    rgba(214, 228, 250, 0.085) 0%,
    rgba(198, 207, 226, 0.035) 40%,
    transparent 72%);
  opacity: 0;
  transition: opacity 0.6s var(--l4r-ease-soft);
}
.l4r-cursor.is-live { opacity: 1; }

.l4r-vignette {
  box-shadow: inset 0 0 26vmax 8vmax rgba(2, 3, 8, 0.8);
  background: linear-gradient(180deg, rgba(3, 4, 10, 0.44) 0%, transparent 20%, transparent 70%, rgba(3, 4, 10, 0.7) 100%);
}

/* ============================================================
   4. NAVBAR
   ============================================================ */
.navbar {
  background: linear-gradient(180deg, rgba(6, 7, 14, 0.92) 0%, rgba(6, 7, 14, 0.74) 100%) !important;
  backdrop-filter: blur(16px) saturate(130%);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  border-bottom: 1px solid var(--l4r-line-soft) !important;
  box-shadow: 0 1px 0 rgba(198, 207, 226, 0.07), 0 16px 42px -20px rgba(0, 0, 0, 0.95);
  transition: padding 0.42s var(--l4r-ease), box-shadow 0.42s var(--l4r-ease), background 0.42s var(--l4r-ease);
}

.navbar.l4r-condensed {
  padding-top: 0.15rem;
  padding-bottom: 0.15rem;
  background: linear-gradient(180deg, rgba(5, 6, 12, 0.97), rgba(5, 6, 12, 0.9)) !important;
  box-shadow: 0 1px 0 rgba(230, 200, 138, 0.2), 0 18px 46px -20px rgba(0, 0, 0, 1);
}

.navbar-brand {
  font-family: var(--l4r-font-display);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--l4r-moon) !important;
  text-shadow: 0 0 20px rgba(214, 228, 250, 0.35);
  transition: text-shadow 0.4s var(--l4r-ease-soft), color 0.4s var(--l4r-ease-soft);
}

.navbar-brand:hover {
  color: var(--l4r-gold-hi) !important;
  text-shadow: 0 0 26px rgba(230, 200, 138, 0.6);
}

.l4r-brand-moon {
  color: var(--l4r-gold);
  margin-right: 0.7rem;
  flex: 0 0 auto;
  filter: drop-shadow(0 0 8px rgba(230, 200, 138, 0.7));
  animation: l4r-crescent 6.5s var(--l4r-ease-soft) infinite;
}

@keyframes l4r-crescent {
  0%, 100% { transform: rotate(-14deg) scale(1);    filter: drop-shadow(0 0 6px rgba(230, 200, 138, 0.45)); }
  50%      { transform: rotate(8deg) scale(1.1);     filter: drop-shadow(0 0 14px rgba(230, 200, 138, 0.9)); }
}

.l4r-brand-text { white-space: nowrap; }

.navbar-brand img.ctf_logo {
  filter: drop-shadow(0 0 10px rgba(214, 228, 250, 0.3));
}

.navbar .nav-link {
  position: relative;
  font-family: var(--l4r-font-body);
  font-weight: 400;
  font-size: 0.88rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--l4r-ash) !important;
  padding: 0.5rem 0.9rem !important;
  transition: color 0.3s var(--l4r-ease-soft), text-shadow 0.3s var(--l4r-ease-soft);
}

/* underline opens from the centre, like moonlight widening */
.navbar .nav-link::after {
  content: "";
  position: absolute;
  left: 0.9rem;
  right: 0.9rem;
  bottom: 0.2rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--l4r-silver) 22%, var(--l4r-gold) 50%, var(--l4r-silver) 78%, transparent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.5s var(--l4r-ease);
  box-shadow: 0 0 10px rgba(230, 200, 138, 0.6);
}

.navbar .nav-link:hover,
.navbar .nav-link:focus-visible,
.navbar .nav-item.active > .nav-link {
  color: var(--l4r-moon) !important;
  text-shadow: 0 0 14px rgba(214, 228, 250, 0.55);
}

.navbar .nav-link:hover::after,
.navbar .nav-link:focus-visible::after,
.navbar .nav-item.active > .nav-link::after {
  transform: scaleX(1);
}

.badge-notification {
  background: var(--l4r-gold) !important;
  color: #17130a !important;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.5), 0 0 14px rgba(230, 200, 138, 0.8);
  animation: l4r-alarm 2.4s var(--l4r-ease-soft) infinite;
}

@keyframes l4r-alarm {
  0%, 100% { transform: scale(1); }
  16%      { transform: scale(1.24); }
  32%      { transform: scale(1); }
}

.navbar-toggler { border-color: var(--l4r-line-soft); }
.navbar-toggler-icon {
  filter: invert(0.86) sepia(0.16) saturate(1.4) hue-rotate(180deg) brightness(1.02);
}

.dropdown-menu {
  border: 1px solid var(--l4r-line);
  border-radius: var(--l4r-radius);
  box-shadow: 0 26px 62px -24px rgba(0, 0, 0, 1);
  padding: 0.4rem;
  animation: l4r-drop-in 0.28s var(--l4r-ease);
}

@keyframes l4r-drop-in {
  from { opacity: 0; transform: translateY(-9px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.dropdown-item {
  border-radius: 6px;
  font-size: 0.9rem;
  transition: background 0.22s, color 0.22s, padding-left 0.3s var(--l4r-ease);
}
.dropdown-item:hover { padding-left: 1.35rem; }

/* Decorative live-status pill (this theme is dark-only) */
.l4r-signal-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  height: 1.75rem;
  padding: 0 0.75rem;
  margin-left: 0.35rem;
  border: 1px solid var(--l4r-line);
  border-radius: 99px;
  background: rgba(198, 207, 226, 0.06);
  color: var(--l4r-silver);
  font-size: 0.72rem;
  vertical-align: middle;
}

.l4r-signal-pill i { font-size: 0.66rem; color: var(--l4r-gold); }

.l4r-signal-dot {
  position: relative;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--l4r-gold);
  box-shadow: 0 0 10px rgba(230, 200, 138, 0.95);
}

.l4r-signal-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid rgba(230, 200, 138, 0.65);
  animation: l4r-blip 2.6s var(--l4r-ease-soft) infinite;
}

@keyframes l4r-blip {
  0%   { transform: scale(0.5); opacity: 1; }
  70%  { transform: scale(2); opacity: 0; }
  100% { transform: scale(2); opacity: 0; }
}

/* ============================================================
   5. JUMBOTRON
   ============================================================ */
main { position: relative; z-index: 1; }

.jumbotron {
  position: relative;
  background:
    radial-gradient(85% 140% at 50% 130%, rgba(198, 207, 226, 0.12) 0%, transparent 60%),
    linear-gradient(180deg, rgba(10, 13, 24, 0.68) 0%, rgba(6, 7, 14, 0.16) 100%) !important;
  border-bottom: 1px solid var(--l4r-line-soft);
  padding: 4.75rem 1rem 3.25rem !important;
  overflow: hidden;
}

.jumbotron::before {
  content: "";
  position: absolute;
  top: -70%;
  left: 50%;
  translate: -50% 0;
  width: min(820px, 94%);
  height: 210%;
  background: radial-gradient(closest-side, rgba(214, 228, 250, 0.1), transparent 72%);
  pointer-events: none;
  animation: l4r-breathe 11s var(--l4r-ease-soft) infinite;
}

.jumbotron::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--l4r-silver), var(--l4r-gold), var(--l4r-silver), transparent);
  background-size: 42% 100%;
  background-repeat: no-repeat;
  animation: l4r-hairline 9s linear infinite;
  opacity: 0.7;
}

@keyframes l4r-hairline {
  0%   { background-position: -46% 0; }
  100% { background-position: 146% 0; }
}

.jumbotron .container {
  position: relative;
  font-family: var(--l4r-font-display);
}

.jumbotron h1 {
  font-family: var(--l4r-font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.6vw, 3.7rem);
  letter-spacing: 0.13em;
  text-transform: uppercase;
  margin: 0;
  background: linear-gradient(100deg,
    #ffffff 0%, var(--l4r-moon) 22%, var(--l4r-silver) 44%,
    var(--l4r-gold-hi) 56%, var(--l4r-silver) 70%, var(--l4r-moon) 100%);
  background-size: 240% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 22px rgba(198, 207, 226, 0.24));
  animation: l4r-moonlight-pass 9s linear infinite;
}

/* moonlight travelling across the letters */
@keyframes l4r-moonlight-pass {
  from { background-position: 240% 0; }
  to   { background-position: -240% 0; }
}

.jumbotron h2,
.jumbotron h3,
.jumbotron p {
  color: var(--l4r-ash);
  font-family: var(--l4r-font-body);
}

.category-header {
  position: relative;
  padding-left: 1.05rem;
}

.category-header::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  bottom: 0.3em;
  width: 2px;
  background: linear-gradient(180deg, var(--l4r-gold), rgba(198, 207, 226, 0.15));
  box-shadow: 0 0 12px rgba(230, 200, 138, 0.55);
}

.category-header h3 {
  font-family: var(--l4r-font-body);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--l4r-silver);
  margin: 0;
}

/* ============================================================
   6. BUTTONS
   ============================================================ */
.btn {
  position: relative;
  font-family: var(--l4r-font-body);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-size: 0.8rem;
  border-radius: 99px !important;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.26s var(--l4r-ease), box-shadow 0.34s var(--l4r-ease),
              background-color 0.34s var(--l4r-ease), border-color 0.34s var(--l4r-ease),
              color 0.34s var(--l4r-ease);
}

/* liquid silver sheen */
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(105deg,
    transparent 24%,
    rgba(255, 255, 255, 0.42) 48%,
    rgba(248, 233, 198, 0.5) 54%,
    transparent 76%);
  transform: translateX(-135%);
  transition: transform 0.78s var(--l4r-ease);
}

.btn:hover::before,
.btn:focus-visible::before { transform: translateX(135%); }

.btn:active { transform: translateY(1px) scale(0.985) !important; }

.btn-primary {
  background: linear-gradient(180deg, #ffffff 0%, var(--l4r-moon) 40%, var(--l4r-silver) 100%);
  border: 1px solid #ffffff;
  color: #14161f !important;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.45), 0 12px 30px -14px rgba(214, 228, 250, 0.9);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: linear-gradient(180deg, #ffffff 0%, var(--l4r-gold-hi) 52%, var(--l4r-gold) 100%);
  color: #17130a !important;
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(248, 233, 198, 0.7), 0 16px 36px -12px rgba(230, 200, 138, 0.95);
}

.btn-secondary,
.btn-dark {
  background: linear-gradient(180deg, var(--l4r-stone) 0%, var(--l4r-slate) 100%);
  border: 1px solid var(--l4r-line-soft);
  color: var(--l4r-silver) !important;
}

.btn-secondary:hover,
.btn-dark:hover {
  background: linear-gradient(180deg, #262d47 0%, var(--l4r-stone) 100%);
  border-color: var(--l4r-line);
  color: var(--l4r-moon) !important;
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -18px rgba(198, 207, 226, 0.75);
}

.btn-outline-primary {
  border: 1px solid var(--l4r-gold);
  color: var(--l4r-gold) !important;
  background: transparent;
}
.btn-outline-primary:hover {
  background: rgba(230, 200, 138, 0.14);
  color: var(--l4r-gold-hi) !important;
  box-shadow: 0 0 26px -8px rgba(230, 200, 138, 0.85);
}

.btn-success {
  background: linear-gradient(180deg, #a6f2d8, #3fb98d);
  border-color: #c4f8e6;
  color: #04150f !important;
}

.btn-danger {
  background: linear-gradient(180deg, #ff9aa6, #c14453);
  border-color: #ffb8c1;
  color: #1c0508 !important;
}

.btn-close {
  filter: invert(1) grayscale(100%) brightness(190%);
  opacity: 0.55;
  transition: opacity 0.25s, transform 0.4s var(--l4r-ease);
}
.btn-close:hover { opacity: 1; transform: rotate(90deg); }

/* ============================================================
   7. FORMS
   ============================================================ */
.form-control,
.form-select {
  background-color: rgba(8, 10, 20, 0.88) !important;
  border: 1px solid var(--l4r-line-soft) !important;
  border-radius: var(--l4r-radius) !important;
  color: #e4e9f4 !important;
  font-family: var(--l4r-font-body);
  transition: border-color 0.3s var(--l4r-ease-soft), box-shadow 0.3s var(--l4r-ease-soft),
              background-color 0.3s var(--l4r-ease-soft);
}

.form-control::placeholder { color: #5c6784; }

.form-control:focus,
.form-select:focus {
  background-color: rgba(12, 15, 28, 0.98) !important;
  border-color: rgba(230, 200, 138, 0.65) !important;
  box-shadow: 0 0 0 3px rgba(230, 200, 138, 0.14), 0 0 24px -8px rgba(230, 200, 138, 0.7) !important;
  outline: none;
}

.form-label,
label b {
  font-family: var(--l4r-font-body);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--l4r-ash);
}

.form-check-input {
  background-color: rgba(8, 10, 20, 0.9);
  border-color: var(--l4r-line-soft);
}
.form-check-input:checked {
  background-color: var(--l4r-gold);
  border-color: var(--l4r-gold);
}
.form-check-input:focus {
  box-shadow: 0 0 0 3px rgba(230, 200, 138, 0.2);
  border-color: var(--l4r-gold);
}

.input-filled-valid { border-color: rgba(127, 227, 192, 0.55) !important; }
.input-filled-invalid { border-color: rgba(255, 123, 138, 0.6) !important; }

.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 5'%3e%3cpath fill='%23e6c88a' d='M2 0L0 2h4zm0 5L0 3h4z'/%3e%3c/svg%3e") !important;
}

/* ============================================================
   8. CARDS + CHALLENGE TILES (stone slabs)
   ============================================================ */
.card {
  background: linear-gradient(168deg, rgba(29, 35, 56, 0.92) 0%, rgba(12, 15, 27, 0.95) 100%);
  border: 1px solid var(--l4r-line);
  border-radius: var(--l4r-radius);
  box-shadow: 0 22px 52px -30px rgba(0, 0, 0, 1), inset 0 1px 0 rgba(198, 207, 226, 0.06);
  transition: transform 0.42s var(--l4r-ease), box-shadow 0.42s var(--l4r-ease), border-color 0.42s var(--l4r-ease);
}

.card:hover {
  border-color: rgba(198, 207, 226, 0.34);
  box-shadow: 0 28px 62px -30px rgba(0, 0, 0, 1), 0 0 40px -20px rgba(214, 228, 250, 0.6);
}

[data-bs-theme="dark"] .challenge-button,
.challenge-button {
  position: relative;
  background: linear-gradient(165deg, rgba(30, 37, 60, 0.94) 0%, rgba(11, 14, 26, 0.97) 100%) !important;
  border: 1px solid var(--l4r-line) !important;
  border-radius: var(--l4r-radius) !important;
  color: #e4e9f4 !important;
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform 0.34s var(--l4r-ease), box-shadow 0.42s var(--l4r-ease),
              border-color 0.36s var(--l4r-ease), background 0.36s var(--l4r-ease);
}

/* a thin moonlit arc across the top of each slab */
.challenge-button::before {
  content: "";
  position: absolute;
  top: 0; left: 12%; right: 12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(214, 228, 250, 0.75), transparent);
  opacity: 0.35;
  transition: opacity 0.4s var(--l4r-ease-soft), left 0.45s var(--l4r-ease), right 0.45s var(--l4r-ease);
  pointer-events: none;
  z-index: 2;
}

.challenge-button:hover::before,
.challenge-button:focus-visible::before {
  opacity: 1;
  left: 2%;
  right: 2%;
}

.challenge-button .challenge-inner {
  position: relative;
  z-index: 1;
}

[data-bs-theme="dark"] .challenge-button:hover {
  background: linear-gradient(165deg, rgba(41, 50, 78, 0.96) 0%, rgba(15, 19, 34, 1) 100%) !important;
  border-color: rgba(230, 200, 138, 0.4) !important;
  box-shadow: 0 20px 44px -22px rgba(0, 0, 0, 1), 0 0 42px -18px rgba(214, 228, 250, 0.85);
  transform: translateY(-5px);
}

.challenge-button .challenge-inner p {
  font-family: var(--l4r-font-body);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 0.03em;
  margin-bottom: 0.3rem;
  transition: color 0.32s var(--l4r-ease-soft), text-shadow 0.32s var(--l4r-ease-soft);
  overflow-wrap: anywhere;
}

.challenge-button:hover .challenge-inner p {
  color: var(--l4r-gold-hi);
  text-shadow: 0 0 16px rgba(230, 200, 138, 0.5);
}

.challenge-button .challenge-inner span {
  font-family: var(--l4r-font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--l4r-silver);
  opacity: 0.85;
}

[data-bs-theme="dark"] .challenge-button.challenge-solved,
.challenge-button.challenge-solved {
  background: linear-gradient(165deg, rgba(23, 58, 50, 0.92) 0%, rgba(9, 26, 23, 0.96) 100%) !important;
  border-color: rgba(127, 227, 192, 0.4) !important;
}

.challenge-button.challenge-solved .challenge-inner span {
  color: var(--l4r-solved);
  opacity: 1;
}

.challenge-button.challenge-solved::before {
  background: linear-gradient(90deg, transparent, rgba(127, 227, 192, 0.85), transparent);
  opacity: 0.8;
}

[data-bs-theme="dark"] .challenge-button.challenge-solved:hover {
  box-shadow: 0 20px 44px -22px rgba(0, 0, 0, 1), 0 0 42px -18px rgba(127, 227, 192, 0.8);
}

/* ============================================================
   8b. AUTH / SHRINE PANEL
   ============================================================ */
.l4r-panel {
  position: relative;
  padding: 2.6rem 2.25rem 2.25rem;
  background: linear-gradient(168deg, rgba(29, 35, 56, 0.9) 0%, rgba(9, 12, 22, 0.95) 100%);
  border: 1px solid var(--l4r-line);
  border-radius: var(--l4r-radius);
  box-shadow:
    0 36px 84px -36px rgba(0, 0, 0, 1),
    0 0 66px -36px rgba(214, 228, 250, 0.6),
    inset 0 1px 0 rgba(198, 207, 226, 0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: l4r-panel-in 0.65s var(--l4r-ease) both;
}

@keyframes l4r-panel-in {
  from { opacity: 0; transform: translateY(24px) scale(0.985); filter: blur(5px); }
  to   { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
}

/* moonlight rail across the top */
.l4r-panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--l4r-moon), var(--l4r-gold), var(--l4r-moon), transparent);
  background-size: 210% 100%;
  animation: l4r-rail-flow 7s linear infinite;
  box-shadow: 0 0 18px rgba(214, 228, 250, 0.7);
}

@keyframes l4r-rail-flow {
  from { background-position: 210% 0; }
  to   { background-position: -210% 0; }
}

/* corner brackets */
.l4r-panel::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 6px;
  pointer-events: none;
  background:
    linear-gradient(var(--l4r-silver), var(--l4r-silver)) left top     / 16px 1px no-repeat,
    linear-gradient(var(--l4r-silver), var(--l4r-silver)) left top     / 1px 16px no-repeat,
    linear-gradient(var(--l4r-gold), var(--l4r-gold))     right bottom / 16px 1px no-repeat,
    linear-gradient(var(--l4r-gold), var(--l4r-gold))     right bottom / 1px 16px no-repeat;
  opacity: 0.4;
  transition: opacity 0.42s var(--l4r-ease-soft);
}

.l4r-panel:hover::after,
.l4r-panel:focus-within::after { opacity: 0.85; }

.l4r-panel form { position: relative; z-index: 1; }

@media (max-width: 575.98px) {
  .l4r-panel { padding: 2.1rem 1.3rem 1.75rem; }
}

/* ============================================================
   9. TABLES
   ============================================================ */
.table {
  --bs-table-bg: transparent;
  --bs-table-color: #e4e9f4;
  --bs-table-striped-bg: rgba(198, 207, 226, 0.03);
  --bs-table-striped-color: #e4e9f4;
  --bs-table-hover-bg: rgba(230, 200, 138, 0.09);
  --bs-table-hover-color: #ffffff;
  border-color: var(--l4r-line-soft);
  font-size: 0.95rem;
}

.table > thead {
  background: linear-gradient(180deg, rgba(198, 207, 226, 0.1), transparent);
}

.table > thead th {
  font-family: var(--l4r-font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--l4r-gold) !important;
  border-bottom: 1px solid var(--l4r-line) !important;
  padding-top: 1.05rem;
  padding-bottom: 1.05rem;
}

.table > tbody > tr {
  transition: background-color 0.3s var(--l4r-ease-soft), box-shadow 0.3s var(--l4r-ease-soft);
}

.table > tbody > tr:hover {
  box-shadow: inset 3px 0 0 var(--l4r-gold);
}

.table > tbody > tr > th[scope="row"] {
  font-family: var(--l4r-font-mono);
  color: var(--l4r-ash);
}

.table > tbody > tr:nth-child(1) > th[scope="row"] {
  color: var(--l4r-moon);
  text-shadow: 0 0 16px rgba(214, 228, 250, 0.8);
}
.table > tbody > tr:nth-child(2) > th[scope="row"] { color: var(--l4r-silver); }
.table > tbody > tr:nth-child(3) > th[scope="row"] { color: var(--l4r-gold); }

/* ============================================================
   10. MODALS
   ============================================================ */
.modal-content {
  position: relative;
  background: linear-gradient(168deg, rgba(29, 35, 56, 0.99) 0%, rgba(8, 10, 20, 0.995) 100%);
  border: 1px solid var(--l4r-line);
  border-radius: var(--l4r-radius);
  box-shadow: 0 44px 110px -32px rgba(0, 0, 0, 1), 0 0 70px -38px rgba(214, 228, 250, 0.7);
  overflow: hidden;
}

.modal-content::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--l4r-moon), var(--l4r-gold), var(--l4r-moon), transparent);
  background-size: 220% 100%;
  animation: l4r-modal-rail 6.5s linear infinite;
  z-index: 5;
}

@keyframes l4r-modal-rail {
  from { background-position: 0% 0; }
  to   { background-position: 220% 0; }
}

.modal.show .modal-dialog {
  animation: l4r-modal-in 0.46s var(--l4r-ease);
}

@keyframes l4r-modal-in {
  from { opacity: 0; transform: translateY(30px) scale(0.955); filter: blur(6px); }
  to   { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
}

.modal-header {
  border-bottom: 1px solid var(--l4r-line);
  background: linear-gradient(180deg, rgba(198, 207, 226, 0.07), transparent);
}

.modal-title {
  font-family: var(--l4r-font-display);
  letter-spacing: 0.07em;
  color: var(--l4r-moon);
}

.modal-backdrop.show { opacity: 0.87; backdrop-filter: blur(3px); }

/* ============================================================
   11. ALERTS / BADGES / PILLS / TOASTS
   ============================================================ */
.alert {
  border-radius: var(--l4r-radius);
  border-width: 1px;
  animation: l4r-alert-in 0.44s var(--l4r-ease);
}

@keyframes l4r-alert-in {
  from { opacity: 0; transform: translateY(-11px); }
  to   { opacity: 1; transform: translateY(0); }
}

.alert-danger {
  background: rgba(193, 68, 83, 0.15);
  border-color: rgba(255, 123, 138, 0.38);
  color: #ffc9d0;
  box-shadow: 0 0 28px -16px rgba(255, 123, 138, 0.9);
}
.alert-success {
  background: rgba(63, 185, 141, 0.13);
  border-color: rgba(127, 227, 192, 0.36);
  color: #bdf3e0;
}
.alert-info {
  background: rgba(134, 168, 220, 0.13);
  border-color: rgba(134, 168, 220, 0.34);
  color: #cfe0f6;
}
.alert-warning {
  background: rgba(230, 200, 138, 0.13);
  border-color: rgba(230, 200, 138, 0.38);
  color: var(--l4r-gold-hi);
}

.badge {
  font-family: var(--l4r-font-mono);
  font-weight: 500;
  letter-spacing: 0.08em;
  border-radius: 4px;
}
.badge.bg-secondary {
  background: var(--l4r-stone) !important;
  border: 1px solid var(--l4r-line-soft);
  color: var(--l4r-ash) !important;
}

.nav-pills {
  --bs-nav-pills-link-active-bg: var(--l4r-gold);
  --bs-nav-pills-link-active-color: #17130a;
  gap: 0.35rem;
}
.nav-pills .nav-link {
  border: 1px solid var(--l4r-line-soft);
  border-radius: 99px;
  color: var(--l4r-ash);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: all 0.3s var(--l4r-ease);
}
.nav-pills .nav-link:hover {
  border-color: var(--l4r-line);
  color: var(--l4r-moon);
}
.nav-pills .nav-link.active {
  box-shadow: 0 0 26px -8px rgba(230, 200, 138, 0.9);
}

.toast {
  background: rgba(14, 18, 32, 0.97);
  border: 1px solid var(--l4r-line);
  border-radius: var(--l4r-radius);
  box-shadow: 0 26px 62px -26px rgba(0, 0, 0, 1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.progress {
  background: rgba(198, 207, 226, 0.08);
  border-radius: 99px;
  overflow: hidden;
}
.progress-bar {
  background: linear-gradient(90deg, #6f7d9e, var(--l4r-silver), var(--l4r-gold-hi));
  background-size: 220% 100%;
  animation: l4r-progress-flow 4s linear infinite;
}
@keyframes l4r-progress-flow {
  from { background-position: 0% 0; }
  to   { background-position: 220% 0; }
}

/* ============================================================
   12. FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--l4r-line-soft);
  background: linear-gradient(180deg, transparent, rgba(2, 3, 8, 0.6));
  z-index: 1;
}
.footer .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}
.footer a { opacity: 0.5; transition: opacity 0.3s, text-shadow 0.3s; }
.footer a:hover {
  opacity: 1;
  text-shadow: 0 0 14px rgba(214, 228, 250, 0.6);
}

.l4r-footer-glyph {
  color: var(--l4r-gold);
  font-size: 1.05rem;
  line-height: 1;
  animation: l4r-crescent 9s var(--l4r-ease-soft) infinite;
}

.l4r-footer-creed {
  font-family: var(--l4r-font-display);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--l4r-ash);
  opacity: 0.72;
}
.l4r-footer-creed::before {
  content: "\2022";
  margin-right: 0.85rem;
  color: var(--l4r-line);
}

/* ============================================================
   13. SCROLL REVEAL
   ============================================================ */
.l4r-reveal {
  opacity: 0;
  transform: translateY(26px);
  filter: blur(5px);
  transition: opacity 0.8s var(--l4r-ease), transform 0.8s var(--l4r-ease), filter 0.8s var(--l4r-ease);
  transition-delay: var(--l4r-delay, 0ms);
}

.l4r-reveal.l4r-in {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

/* ============================================================
   14. ERROR PAGES
   ============================================================ */
.l4r-error {
  min-height: 62vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1rem;
}

.l4r-error-code {
  position: relative;
  font-family: var(--l4r-font-display);
  font-weight: 900;
  font-size: clamp(4.6rem, 19vw, 12rem);
  line-height: 0.92;
  letter-spacing: 0.05em;
  margin: 0;
  background: linear-gradient(180deg, #ffffff 0%, var(--l4r-silver) 46%, rgba(142, 153, 179, 0.16) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 42px rgba(214, 228, 250, 0.34));
  animation: l4r-error-eclipse 8s var(--l4r-ease-soft) infinite;
}

/* the moon sliding past the numerals */
@keyframes l4r-error-eclipse {
  0%, 100% { filter: drop-shadow(0 0 42px rgba(214, 228, 250, 0.34)); }
  45%      { filter: drop-shadow(0 0 62px rgba(230, 200, 138, 0.5)); }
  52%      { filter: drop-shadow(0 0 18px rgba(142, 153, 179, 0.28)); }
  60%      { filter: drop-shadow(0 0 48px rgba(214, 228, 250, 0.4)); }
}

.l4r-error-label {
  font-family: var(--l4r-font-body);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.55em;
  text-transform: uppercase;
  color: var(--l4r-gold);
  margin-top: 1.1rem;
}

.l4r-error-msg {
  max-width: 34rem;
  margin: 1.3rem auto 2.1rem;
  color: var(--l4r-ash);
  font-size: 1.02rem;
  line-height: 1.75;
}

/* crescent formed by an offset shadow, drifting like the real moon */
.l4r-error-disc {
  width: 54px;
  height: 54px;
  margin: 0 auto 1.6rem;
  border-radius: 50%;
  box-shadow: 15px -10px 0 0 var(--l4r-moon), 15px -10px 26px 4px rgba(214, 228, 250, 0.4);
  animation: l4r-disc-drift 12s var(--l4r-ease-soft) infinite;
}

@keyframes l4r-disc-drift {
  0%, 100% { box-shadow: 15px -10px 0 0 var(--l4r-moon), 15px -10px 26px 4px rgba(214, 228, 250, 0.4); }
  50%      { box-shadow: 11px -13px 0 0 var(--l4r-gold-hi), 11px -13px 34px 6px rgba(230, 200, 138, 0.42); }
}

.l4r-error-actions {
  display: flex;
  gap: 0.7rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   15. CORE OVERRIDES
   ============================================================ */
.spinner {
  color: var(--l4r-silver) !important;
  opacity: 0.8 !important;
  filter: drop-shadow(0 0 14px rgba(214, 228, 250, 0.6));
}

blockquote {
  border-left: 2px solid var(--l4r-gold) !important;
  padding-left: 15px;
  color: var(--l4r-ash);
  font-style: italic;
}

pre {
  background: rgba(3, 5, 12, 0.6);
  border: 1px solid var(--l4r-line-soft);
  border-radius: var(--l4r-radius);
  padding: 1rem;
}

.text-muted { color: var(--l4r-ash) !important; }
.text-secondary { color: var(--l4r-ash) !important; }

.ctf_logo { transition: filter 0.4s var(--l4r-ease-soft); }

.lolight {
  background: rgba(3, 5, 12, 0.55) !important;
  border-radius: var(--l4r-radius);
  padding: 0.85rem 1rem;
}

/* ============================================================
   16. RESPONSIVE
   ============================================================ */
@media (max-width: 991.98px) {
  .l4r-moon { width: min(22vh, 30vw); top: 3vh; left: 4vw; }
}

@media (max-width: 767.98px) {
  .l4r-temple { height: 24vh; min-height: 150px; opacity: 0.55; }
  .l4r-glyphs { height: 62px; opacity: 0.1; }
  .jumbotron { padding: 3.4rem 1rem 2.4rem !important; }
  .navbar .nav-link::after { display: none; }
  .l4r-moon { left: auto; right: 5vw; width: min(16vh, 26vw); }
}

/* ============================================================
   17. JS-DRIVEN EFFECTS (tilt / ripple / count-up / magnet)
   ============================================================ */
.l4r-tilt {
  transform-style: preserve-3d;
  will-change: transform;
  transition: transform 0.5s var(--l4r-ease);
}

.l4r-tilt.is-tilting { transition: transform 0.09s linear; }

.l4r-tilt > * { transform: translateZ(18px); }

.l4r-ripple {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  transform: scale(0);
  background: radial-gradient(circle,
    rgba(244, 247, 253, 0.5) 0%,
    rgba(230, 200, 138, 0.28) 45%,
    rgba(230, 200, 138, 0) 70%);
  animation: l4r-ripple-out 0.68s var(--l4r-ease-soft) forwards;
  z-index: 3;
}

@keyframes l4r-ripple-out {
  to {
    transform: scale(1);
    opacity: 0;
  }
}

.l4r-magnet { transition: transform 0.32s var(--l4r-ease); }

.l4r-magnet.is-magnetized { transition: transform 0.1s linear; }

.l4r-count {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

/* ============================================================
   18. REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .l4r-reveal {
    opacity: 1;
    transform: none;
    filter: none;
  }

  .l4r-skyfield,
  .l4r-cursor,
  .l4r-moon-rays,
  .l4r-glyphs-track {
    display: none;
  }

  .l4r-tilt,
  .l4r-tilt > *,
  .l4r-magnet {
    transform: none !important;
  }

  .l4r-ripple { display: none; }
}

/* ========================================================================
   LUN4R CTF — forged-silver / frost-blue / lunar-gold visual layer
   ======================================================================== */
:root,
[data-bs-theme="dark"] {
  --l4r-void: #05070d;
  --l4r-night: #080d17;
  --l4r-panel: rgba(15, 22, 34, 0.92);
  --l4r-panel-hi: rgba(27, 38, 56, 0.96);
  --l4r-metal: #eef5ff;
  --l4r-silver: #b7c5d8;
  --l4r-steel: #75869e;
  --l4r-ice: #9fd5ff;
  --l4r-blue: #4a8fff;
  --l4r-deepblue: #12305e;
  --l4r-gold: #d9b55d;
  --l4r-gold-hi: #fff0b8;
  --l4r-cloth: #e9e4d7;
  --l4r-solved: #6ee7c4;
  --l4r-line: rgba(185, 210, 238, 0.18);
  --l4r-line-soft: rgba(185, 210, 238, 0.09);
  --l4r-radius: 12px;

  --bs-body-bg: var(--l4r-void);
  --bs-body-color: #dfe8f5;
  --bs-emphasis-color: #ffffff;
  --bs-secondary-color: #91a0b7;
  --bs-secondary-bg: #131b2a;
  --bs-tertiary-bg: #0b101a;
  --bs-border-color: var(--l4r-line);
  --bs-primary: var(--l4r-gold);
  --bs-primary-rgb: 217,181,93;
  --bs-primary-text-emphasis: var(--l4r-gold-hi);
  --bs-primary-bg-subtle: #211b0c;
  --bs-primary-border-subtle: #5a4923;
  --bs-link-color: var(--l4r-ice);
  --bs-link-color-rgb: 159,213,255;
  --bs-link-hover-color: #d5ecff;
  --bs-card-bg: var(--l4r-panel);
  --bs-card-border-color: var(--l4r-line);
  --bs-modal-bg: #0d1522;
  --bs-modal-border-color: var(--l4r-line);
  --bs-dropdown-bg: rgba(10, 16, 26, .98);
  --bs-dropdown-border-color: var(--l4r-line);
  --bs-dropdown-link-color: #dfe8f5;
  --bs-dropdown-link-hover-bg: rgba(74,143,255,.13);
  --bs-dropdown-link-hover-color: #fff;
  --l4r-font-display: "Cinzel Decorative", Georgia, serif;
  --l4r-font-body: "Space Grotesk", system-ui, sans-serif;
  --l4r-font-mono: "Space Mono", monospace;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--l4r-font-body);
  background:
    radial-gradient(80vw 50vh at 50% -10%, rgba(74,143,255,.10), transparent 60%),
    linear-gradient(180deg,#070b13 0%,#05070d 55%,#020409 100%);
  color: #dfe8f5;
  overflow-x: hidden;
}
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: -1;
  opacity: .12;
  background-image: linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom,rgba(0,0,0,.9),transparent 92%);
}
h1,h2,h3,h4,h5,h6 { font-family: var(--l4r-font-display); letter-spacing: .06em; }
code,kbd,pre,samp,.text-monospace { font-family: var(--l4r-font-mono) !important; }
a { color: var(--l4r-ice); }
a:hover { color:#fff; text-shadow:0 0 18px rgba(159,213,255,.45); }
::selection { background:rgba(74,143,255,.32); color:#fff; }

/* Backdrop */
.l4r-stage { position:fixed; inset:0; z-index:-1; overflow:hidden; pointer-events:none; background:#04070c; }
.l4r-stage > * { position:absolute; inset:0; }
.l4r-night {
  background:
    radial-gradient(55vw 55vw at 78% 9%,rgba(74,143,255,.12),transparent 68%),
    radial-gradient(45vw 40vw at 20% 0%,rgba(217,181,93,.08),transparent 68%),
    linear-gradient(180deg,#09111e 0%,#060a12 48%,#020409 100%);
}
.l4r-moon { left:auto; top:6vh; right:8vw; width:min(260px,25vw); aspect-ratio:1; opacity:.88; }
.l4r-moon-halo { position:absolute; inset:-95%; border-radius:50%; background:radial-gradient(circle,rgba(210,231,255,.22),rgba(125,173,225,.07) 35%,transparent 70%); filter:blur(18px); animation:l4r-breathe 10s ease-in-out infinite; }
.l4r-moon-disc { position:absolute; inset:0; border-radius:50%; background:radial-gradient(circle at 34% 28%,#fff 0%,#edf4ff 28%,#becce0 65%,#7c8fa9 100%); box-shadow:0 0 70px rgba(170,210,255,.35),inset -24px -20px 40px rgba(40,55,78,.30); }
.l4r-moon-disc::after { content:""; position:absolute; inset:10%; border-radius:50%; background:radial-gradient(circle at 30% 40%,rgba(57,74,99,.11) 0 4%,transparent 5%),radial-gradient(circle at 60% 55%,rgba(57,74,99,.11) 0 6%,transparent 7%),radial-gradient(circle at 45% 25%,rgba(57,74,99,.08) 0 3%,transparent 4%); opacity:.8; }
@keyframes l4r-breathe { 0%,100%{transform:scale(.98);opacity:.75} 50%{transform:scale(1.05);opacity:1} }
.l4r-crest { top:12vh; left:4vw; right:auto; bottom:auto; width:min(480px,42vw); opacity:.055; transform:rotate(-2deg); filter:drop-shadow(0 0 35px rgba(74,143,255,.4)); }
.l4r-crest img { width:100%; height:auto; display:block; }
.l4r-sigils { top:11vh; bottom:auto; left:50%; transform:translateX(-50%); width:min(700px,70vw); display:flex; justify-content:space-between; color:rgba(229,239,253,.22); font-size:24px; letter-spacing:10px; text-shadow:0 0 18px rgba(159,213,255,.22); }
.l4r-sigils span:nth-child(2),.l4r-sigils span:nth-child(4){color:rgba(217,181,93,.24)}
.l4r-shards { top:auto; bottom:3vh; height:180px; display:flex; align-items:flex-end; justify-content:space-between; padding:0 3vw; }
.l4r-shards i { display:block; width:clamp(70px,8vw,150px); height:clamp(50px,7vw,110px); transform:skewX(-18deg) rotate(-7deg); background:linear-gradient(145deg,#dde8f6 0%,#73859e 28%,#203451 58%,#08101e 100%); border:1px solid rgba(192,220,250,.25); box-shadow:0 22px 50px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.45); opacity:.15; }
.l4r-shards i:nth-child(2),.l4r-shards i:nth-child(4){background:linear-gradient(145deg,#f5e0a1 0%,#a98134 25%,#3e2f12 62%,#0d0a04 100%); opacity:.10; transform:skewX(18deg) rotate(8deg);}
.l4r-horizon { top:auto; height:26vh; background:linear-gradient(180deg,transparent 0,rgba(0,0,0,.18) 25%,rgba(0,0,0,.92) 100%); }
.l4r-cursor { background:radial-gradient(360px circle at var(--l4r-mx,50%) var(--l4r-my,0%),rgba(159,213,255,.07),transparent 72%); opacity:0; transition:opacity .5s ease; }
.l4r-cursor.is-live { opacity:1; }
.l4r-vignette { box-shadow:inset 0 0 22vmax 8vmax rgba(0,0,0,.74); background:linear-gradient(180deg,rgba(0,0,0,.24),transparent 22%,transparent 70%,rgba(0,0,0,.55)); }

/* Navbar */
.navbar { background:linear-gradient(180deg,rgba(5,8,14,.97),rgba(5,8,14,.82)) !important; border-bottom:1px solid rgba(159,213,255,.12)!important; backdrop-filter:blur(18px) saturate(145%); box-shadow:0 12px 40px -24px #000,0 1px 0 rgba(255,255,255,.04); }
.navbar-brand { position:relative; min-height:48px; gap:.65rem; font-family:var(--l4r-font-display); color:#f3f7ff!important; text-shadow:0 0 16px rgba(159,213,255,.18); }
.l4r-logo { display:block; width:auto; max-width:150px; height:39px; object-fit:contain; filter:drop-shadow(0 2px 10px rgba(74,143,255,.22)); }
.l4r-logo-builtin { max-width:154px; }
.l4r-brand-name { display:none; color:#fff; font-size:.78rem; letter-spacing:.22em; text-transform:uppercase; }
.l4r-brand-frame { position:absolute; left:-10px; right:-10px; top:5px; bottom:5px; pointer-events:none; border-top:1px solid rgba(159,213,255,.08); border-bottom:1px solid rgba(217,181,93,.07); opacity:0; transition:opacity .35s ease; }
.navbar-brand:hover .l4r-brand-frame { opacity:1; }
.navbar .nav-link { position:relative; font-size:.79rem; font-weight:600; text-transform:uppercase; letter-spacing:.15em; color:#94a5bc!important; padding:.65rem .78rem!important; }
.navbar .nav-link::after { content:""; position:absolute; left:14%; right:14%; bottom:.22rem; height:1px; background:linear-gradient(90deg,transparent,var(--l4r-ice),var(--l4r-gold),transparent); transform:scaleX(0); transition:transform .45s cubic-bezier(.16,1,.3,1); box-shadow:0 0 12px rgba(159,213,255,.45); }
.navbar .nav-link:hover,.navbar .nav-link:focus-visible,.navbar .nav-item.active>.nav-link { color:#fff!important; text-shadow:0 0 12px rgba(159,213,255,.32); }
.navbar .nav-link:hover::after,.navbar .nav-link:focus-visible::after,.navbar .nav-item.active>.nav-link::after { transform:scaleX(1); }
.navbar-toggler { border-color:rgba(159,213,255,.2)!important; }
.navbar-toggler-icon { filter:invert(0.88) sepia(.12) saturate(1.2) hue-rotate(170deg); }
.l4r-admin { color:var(--l4r-gold)!important; }
.l4r-register { color:var(--l4r-gold-hi)!important; }
.l4r-login { color:#e2eefc!important; }
.l4r-logout:hover { color:#ff9aa6!important; }
.badge-notification { background:var(--l4r-gold)!important; color:#15120a!important; box-shadow:0 0 12px rgba(217,181,93,.65); }
.dropdown-menu { border:1px solid var(--l4r-line); border-radius:10px; box-shadow:0 26px 70px -28px #000; padding:.35rem; }
.dropdown-item { border-radius:7px; }
.dropdown-item:hover { padding-left:1.1rem; }

/* Headers */
main { position:relative; z-index:1; }
.jumbotron { background:linear-gradient(180deg,rgba(10,16,25,.82),rgba(5,8,14,.2))!important; border-bottom:1px solid var(--l4r-line-soft); padding:4.8rem 1rem 3rem!important; overflow:hidden; }
.jumbotron::before { content:""; position:absolute; left:50%; top:-90%; width:min(900px,110%); height:260%; transform:translateX(-50%); background:radial-gradient(closest-side,rgba(159,213,255,.10),rgba(74,143,255,.025) 52%,transparent 75%); pointer-events:none; }
.jumbotron h1 { position:relative; margin:0; font-weight:900; font-size:clamp(2rem,5.4vw,3.8rem); background:linear-gradient(100deg,#fff 0%,#dfe9f6 25%,#9fb3cb 44%,#f9edc9 53%,#91b0d8 67%,#fff 100%); background-size:220% 100%; -webkit-background-clip:text; background-clip:text; color:transparent; filter:drop-shadow(0 5px 28px rgba(76,132,194,.24)); animation:l4r-sheen 10s linear infinite; }
@keyframes l4r-sheen { from{background-position:220% 0} to{background-position:-220% 0} }
.category-header { padding-left:1rem; }
.category-header::before { background:linear-gradient(180deg,var(--l4r-gold),var(--l4r-ice)); box-shadow:0 0 14px rgba(217,181,93,.45); }
.category-header h3 { font-family:var(--l4r-font-body); color:#b4c3d7; letter-spacing:.26em; font-weight:600; }

/* Buttons / controls */
.btn { font-family:var(--l4r-font-body); font-weight:600; letter-spacing:.13em; text-transform:uppercase; border-radius:9px!important; }
.btn-primary { background:linear-gradient(180deg,#fff8df 0%,#e6c97c 54%,#9b7930 100%); border:1px solid #ffe9a9; color:#17130a!important; box-shadow:0 10px 28px -16px rgba(217,181,93,.9),inset 0 1px 0 rgba(255,255,255,.8); }
.btn-primary:hover { background:linear-gradient(180deg,#fff 0%,#fff0b8 42%,#d5a83d 100%); transform:translateY(-1px); box-shadow:0 15px 34px -16px rgba(217,181,93,.95); }
.btn-secondary,.btn-dark { background:linear-gradient(180deg,#26354c 0%,#111a29 100%); border:1px solid rgba(159,213,255,.16); color:#d8e5f4!important; box-shadow:inset 0 1px 0 rgba(255,255,255,.06); }
.btn-secondary:hover,.btn-dark:hover { background:linear-gradient(180deg,#304564,#162438 100%); border-color:rgba(159,213,255,.35); transform:translateY(-1px); }
.form-control,.form-select { background:rgba(7,11,18,.92)!important; color:#e2eaf4!important; border:1px solid rgba(159,213,255,.13)!important; border-radius:9px!important; }
.form-control:focus,.form-select:focus { border-color:rgba(159,213,255,.55)!important; box-shadow:0 0 0 3px rgba(74,143,255,.12),0 0 24px -10px rgba(159,213,255,.75)!important; }
.form-label,label b { color:#91a2b8; font-size:.72rem; text-transform:uppercase; letter-spacing:.18em; }

/* Cards and challenge tiles: beveled, forged-metal feel */
.card { background:linear-gradient(160deg,rgba(30,43,61,.94),rgba(10,15,24,.97)); border:1px solid rgba(159,213,255,.14); border-radius:var(--l4r-radius); box-shadow:0 24px 50px -30px #000,inset 0 1px 0 rgba(255,255,255,.07); }
.card:hover { border-color:rgba(159,213,255,.3); box-shadow:0 28px 62px -32px #000,0 0 34px -18px rgba(74,143,255,.6); }
.challenge-button { background:linear-gradient(160deg,rgba(37,53,75,.96),rgba(10,15,24,.98))!important; border:1px solid rgba(159,213,255,.16)!important; border-radius:12px!important; color:#e8f0fa!important; box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 18px 42px -28px #000; }
.challenge-button::before { background:linear-gradient(90deg,transparent,#bcdcff,var(--l4r-gold),#bcdcff,transparent); opacity:.6; }
.challenge-button:hover { background:linear-gradient(160deg,rgba(51,70,97,.98),rgba(12,19,30,1))!important; border-color:rgba(159,213,255,.40)!important; box-shadow:0 22px 48px -26px #000,0 0 40px -20px rgba(74,143,255,.8); transform:translateY(-4px); }
.challenge-button:hover .challenge-inner p { color:#fff0b8; text-shadow:0 0 16px rgba(217,181,93,.34); }
.challenge-button .challenge-inner span { color:#a8bdd4; font-family:var(--l4r-font-mono); }
.challenge-button.challenge-solved { background:linear-gradient(160deg,rgba(16,55,48,.96),rgba(7,23,21,.98))!important; border-color:rgba(110,231,196,.36)!important; }
.challenge-button.challenge-solved .challenge-inner span { color:var(--l4r-solved); }

/* Auth panel from the source themes, recolored for Lun4R */
.l4r-panel { background:linear-gradient(155deg,rgba(31,45,65,.94),rgba(8,12,20,.98)); border-color:rgba(159,213,255,.18); box-shadow:0 36px 84px -36px #000,0 0 66px -38px rgba(74,143,255,.75),inset 0 1px 0 rgba(255,255,255,.08); }
.l4r-panel::before { background:linear-gradient(90deg,transparent,#dcecff,var(--l4r-gold),#dcecff,transparent); }

.table { --bs-table-bg:transparent; --bs-table-color:#dbe6f2; }
.table>thead th { color:#91a6bf; text-transform:uppercase; letter-spacing:.13em; font-size:.74rem; border-bottom-color:rgba(159,213,255,.15)!important; }
.table>tbody>tr { border-color:rgba(159,213,255,.08); }
.table>tbody>tr:hover { background:rgba(74,143,255,.05)!important; }
.progress { background:#0b111b; border:1px solid rgba(159,213,255,.1); }
.progress-bar { background:linear-gradient(90deg,#658ebf,var(--l4r-gold)); box-shadow:0 0 18px -5px rgba(217,181,93,.75); }

.alert { border-radius:10px; background:rgba(14,22,34,.92); border-color:rgba(159,213,255,.14); }
.modal-content { background:linear-gradient(160deg,#162235,#0a1019); border:1px solid rgba(159,213,255,.2); box-shadow:0 34px 90px -28px #000; }
.modal-header,.modal-footer { border-color:rgba(159,213,255,.1); }

.footer { background:linear-gradient(180deg,transparent,rgba(2,4,8,.72)); border-top:1px solid rgba(159,213,255,.08); padding-top:2rem!important; padding-bottom:2rem!important; }
.l4r-footer-mark { display:inline-block; margin-right:.55rem; color:var(--l4r-gold); font-family:var(--l4r-font-mono); font-weight:700; letter-spacing:.16em; }
.l4r-footer-creed { display:block; margin-top:.45rem; color:#63758b; font-family:var(--l4r-font-mono); font-size:.62rem; letter-spacing:.16em; text-transform:uppercase; }

@media (max-width: 767.98px) {
  .l4r-logo { max-width:125px; height:34px; }
  .navbar-brand { padding-left:0; }
  .navbar .nav-link { padding:.7rem .3rem!important; }
  .l4r-moon { width:170px; right:3vw; top:9vh; opacity:.38; }
  .l4r-crest { width:72vw; left:-10vw; top:15vh; opacity:.035; }
  .jumbotron { padding-top:5rem!important; }
}

@media (prefers-reduced-motion: reduce) {
  .jumbotron h1,.l4r-moon-halo { animation:none!important; }
}