:root {
  color-scheme: dark;
  --ring-cyan: #4ef9ff;
  --ring-azure: #36c3ff;
  --ring-blue: #5a6cff;
  --ring-purple: #ff7bff;
  --ring-gradient: linear-gradient(
    130deg,
    var(--ring-cyan) 0%,
    var(--ring-azure) 32%,
    var(--ring-blue) 62%,
    var(--ring-purple) 100%
  );
  --bg: #04061a;
  --card: rgba(9, 13, 40, 0.9);
  --card-strong: rgba(17, 12, 52, 0.92);
  --card-border: rgba(78, 163, 255, 0.28);
  --accent: var(--ring-cyan);
  --accent-strong: var(--ring-purple);
  --text: #f4f7ff;
  --muted: #b3c0ff;
  --success: #7af5c2;
  --danger: #ff7aa6;
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Space Grotesk', system-ui, -apple-system, BlinkMacSystemFont,
    'Segoe UI', sans-serif;
  background-color: #01020d;
  background-image: radial-gradient(circle at 14% 18%, rgba(78, 249, 255, 0.18),
      transparent 52%),
    radial-gradient(circle at 80% 8%, rgba(255, 98, 214, 0.16), transparent 48%),
    radial-gradient(circle at 60% 78%, rgba(160, 43, 255, 0.18), transparent 50%),
    linear-gradient(180deg, #01020d 0%, #020721 38%, #020316 72%, #050312 100%);
  color: var(--text);
  overflow-x: hidden;
  background-attachment: fixed;
  position: relative;
}

img {
  max-width: 100%;
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: 600;
}

p {
  margin: 0;
  line-height: 1.5;
}

main {
  position: relative;
  z-index: 2;
}

.app-shell {
  padding: clamp(1.5rem, 3vw, 3rem);
  max-width: 1100px;
  margin: 0 auto 6rem;
}

.hero {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.auth-section {
  display: flex;
  gap: clamp(1.5rem, 4vw, 3rem);
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  background: rgba(8, 12, 36, 0.65);
  border-radius: 1.5rem;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border: 1px solid rgba(78, 163, 255, 0.28);
  box-shadow: 0 25px 70px rgba(1, 4, 21, 0.65);
  margin-bottom: 2rem;
}

.auth-section > div {
  flex: 1 1 260px;
}

.auth-section h2 {
  margin-bottom: 0.5rem;
}

.auth-card {
  flex: 1 1 320px;
  display: grid;
  gap: 1rem;
  background: linear-gradient(145deg, rgba(6, 10, 34, 0.92), rgba(18, 11, 45, 0.95));
  border-radius: 1.5rem;
  padding: clamp(1.25rem, 2vw, 2rem);
  border: 1px solid var(--card-border);
  box-shadow: 0 20px 70px rgba(3, 6, 21, 0.8);
}

.auth-card label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.auth-card input {
  border-radius: 0.75rem;
  border: 1px solid rgba(78, 249, 255, 0.35);
  background: rgba(5, 7, 26, 0.85);
  padding: 0.85rem 1rem;
  color: var(--text);
  font: inherit;
  box-shadow: inset 0 0 25px rgba(86, 130, 255, 0.2);
}

.auth-card small {
  font-size: 0.75rem;
  color: var(--muted);
  opacity: 0.9;
}

.auth-feedback {
  min-height: 1.5rem;
  font-weight: 600;
  margin-top: 0.25rem;
}

.auth-feedback.is-success {
  color: var(--success);
}

.auth-feedback.is-error {
  color: var(--danger);
}

.tag {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--accent);
}

.lede {
  margin-top: 1rem;
  max-width: 55ch;
  color: var(--muted);
}

.hero-card {
  padding: 1.5rem;
  border-radius: 1.5rem;
  background: linear-gradient(145deg, rgba(8, 14, 48, 0.85), rgba(18, 11, 60, 0.92));
  border: 1px solid var(--card-border);
  text-align: center;
  min-width: 200px;
  box-shadow: 0 12px 50px rgba(78, 163, 255, 0.35);
}

.hero-card__count {
  font-size: 2.2rem;
  font-weight: 700;
  color: #fff;
  margin: 0.25rem 0 0.5rem;
  text-shadow: 0 8px 30px rgba(78, 249, 255, 0.55);
}

.game-card {
  background: linear-gradient(145deg, rgba(9, 13, 40, 0.92), rgba(19, 13, 62, 0.95));
  border: 1px solid var(--card-border);
  border-radius: 1.5rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  margin-bottom: 2rem;
  box-shadow: 0 25px 90px rgba(11, 15, 45, 0.65);
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: stretch;
  grid-auto-flow: row dense;
}


.flag-panel,
.interaction-panel {
  min-width: 0;
}

.flag-panel {
  display: flex;
  align-items: center;
}

.interaction-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.question-timer {
  background: linear-gradient(135deg, rgba(108, 244, 255, 0.08), rgba(255, 123, 233, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1rem;
  padding: 0.85rem 1.1rem;
  display: grid;
  gap: 0.65rem;
  box-shadow: 0 10px 30px rgba(5, 3, 16, 0.35) inset;
}

.question-timer > div:first-child {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.2rem;
}

.question-timer__value {
  font-size: clamp(1.5rem, 2vw, 2rem);
  font-weight: 600;
  color: #fff;
  margin-right: 0.4rem;
}

.question-timer__label {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.question-timer__bar {
  width: 100%;
  height: 0.4rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.question-timer__fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #6cf4ff, #ff7be9);
  transform-origin: left center;
  transition: transform 0.2s linear;
}

.question-timer.is-expired .question-timer__value {
  color: #ff9687;
}

.flag-wrapper {
  position: relative;
  border-radius: 1.25rem;
  padding: clamp(1rem, 2.5vw, 1.75rem);
  margin-bottom: 1rem;
  isolation: isolate;
  background: rgba(255, 255, 255, 0.02);
  overflow: visible;
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.flag-wrapper::before {
  content: "";
  position: absolute;
  inset: -12% -6%;
  border-radius: inherit;
  background: radial-gradient(
      circle at 20% 20%,
      rgba(255, 255, 255, 0.28),
      transparent 55%
    ),
    radial-gradient(
      circle,
      rgba(78, 249, 255, 0.65),
      rgba(86, 130, 255, 0.55) 45%,
      rgba(255, 123, 255, 0.5) 70%
    );
  filter: blur(60px);
  opacity: 0.95;
  z-index: 0;
  transition: opacity 220ms ease;
}

.flag-wrapper::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 2px;
  background: var(--ring-gradient);
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.75;
  z-index: 0;
  pointer-events: none;
  transition: opacity 220ms ease;
}

#flag-image {
  margin: 0 auto;
  max-height: 220px;
  object-fit: contain;
  border-radius: 1rem;
  padding: clamp(0.5rem, 1.5vw, 1rem);
  z-index: 1;
  position: relative;
  background: rgba(10, 10, 35, 0.5);
  box-shadow: 0 0 40px rgba(78, 249, 255, 0.55),
    0 0 80px rgba(255, 123, 255, 0.55);
  filter: drop-shadow(0 0 40px rgba(78, 249, 255, 0.6))
    drop-shadow(0 0 75px rgba(255, 123, 255, 0.5));
  opacity: 0;
  transform: translateX(-16px) scale(0.985);
  transition: opacity 260ms cubic-bezier(0.18, 0.89, 0.32, 1.28),
    transform 260ms cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

#flag-image.is-loaded {
  opacity: 1;
  transform: translateX(0);
}

.flag-wrapper.is-transitioning {
  transform: translateX(-6px);
}

.flag-wrapper.is-transitioning::before {
  opacity: 0.45;
}

.flag-wrapper.is-transitioning #flag-image {
  opacity: 0;
  transform: translateX(-22px) scale(0.96);
}

.prompt {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.options-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

button {
  font: inherit;
  border: none;
  border-radius: 999px;
  padding: 0.85rem 1.2rem;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease,
    box-shadow 120ms ease;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.options-grid button {
  text-align: center;
  background: linear-gradient(
    135deg,
    rgba(78, 249, 255, 0.16),
    rgba(86, 130, 255, 0.14),
    rgba(255, 123, 255, 0.14)
  );
  color: var(--text);
  border: 1px solid transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding-inline: 1.5rem;
  width: 100%;
}

.options-grid button[data-action="continue"] {
  cursor: pointer;
}

.options-grid button:hover:not(:disabled),
.options-grid button:focus-visible:not(:disabled) {
  transform: translateY(-2px);
  border-color: rgba(78, 249, 255, 0.45);
}

.options-grid button.correct {
  background: rgba(140, 249, 181, 0.12);
  border-color: var(--success);
}

.options-grid button.reveal-next {
  background: var(--ring-gradient);
  color: #050510;
  box-shadow: 0 15px 45px rgba(86, 130, 255, 0.6);
}

.options-grid button.wrong {
  background: rgba(255, 95, 143, 0.18);
  border-color: var(--danger);
}

.primary {
  background: var(--ring-gradient);
  color: #050510;
  font-weight: 600;
  width: 100%;
}

.primary.is-hidden {
  display: none;
}

.feedback {
  min-height: 1.5rem;
  margin-top: 0.75rem;
  font-weight: 600;
}

.mission-meter {
  grid-column: 1 / -1;
  margin-top: 0.5rem;
}

.mission-meter__bar {
  position: relative;
  width: 100%;
  height: 72px;
  border-radius: 1rem;
  background: linear-gradient(135deg, rgba(6, 9, 36, 0.85), rgba(15, 9, 40, 0.92));
  border: 1px solid rgba(78, 163, 255, 0.38);
  overflow: hidden;
}

.mission-meter__fill {
  position: absolute;
  inset: 0;
  width: 0%;
  background: linear-gradient(
    120deg,
    rgba(78, 249, 255, 0.95),
    rgba(86, 130, 255, 0.9),
    rgba(255, 123, 255, 0.9)
  );
  opacity: 0.75;
  transition: width 240ms ease;
}

.mission-meter__stats {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  padding: 0 1.5rem;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.mission-meter__stats span {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.9rem;
}

.mission-meter__stats span::after {
  content: attr(data-label);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.2em;
}

.gallery-panel {
  background: linear-gradient(140deg, rgba(7, 10, 34, 0.9), rgba(18, 11, 44, 0.9));
  border-radius: 1.5rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  border: 1px solid var(--card-border);
  box-shadow: 0 18px 60px rgba(8, 12, 40, 0.6);
}

.gallery-header {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.search input {
  border-radius: 999px;
  border: 1px solid rgba(78, 249, 255, 0.35);
  background: rgba(6, 10, 32, 0.6);
  color: var(--text);
  padding: 0.75rem 1rem;
  min-width: 240px;
  box-shadow: inset 0 0 25px rgba(86, 130, 255, 0.25);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  justify-items: center;
  justify-content: start;
}

.gallery-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1rem;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
  width: min(100%, 180px);
}

.gallery-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    circle at 30% 20%,
    rgba(36, 245, 255, 0.25),
    transparent 60%
  );
  opacity: 0;
  transition: opacity 180ms ease;
  pointer-events: none;
}

.gallery-card:hover::before,
.gallery-card:focus-within::before {
  opacity: 1;
}

.gallery-card img {
  border-radius: 0.65rem;
  padding: 0.35rem;
  background: rgba(255, 255, 255, 0.02);
  box-shadow: 0 0 12px rgba(36, 245, 255, 0.25),
    0 0 18px rgba(226, 92, 255, 0.2);
}

.gallery-card p {
  font-size: 0.9rem;
}

.gallery-card[hidden] {
  display: none !important;
}

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.galaxy-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.galaxy-layer--stars {
  background-image: radial-gradient(1px 1px at 20% 30%, rgba(255, 255, 255, 0.9),
      transparent),
    radial-gradient(1px 1px at 60% 70%, rgba(78, 249, 255, 0.8), transparent),
    radial-gradient(2px 2px at 80% 10%, rgba(255, 123, 255, 0.7), transparent),
    radial-gradient(2px 2px at 10% 80%, rgba(78, 123, 255, 0.6), transparent),
    radial-gradient(1px 1px at 40% 50%, rgba(255, 255, 255, 0.85), transparent),
    radial-gradient(1px 1px at 75% 25%, rgba(78, 249, 255, 0.75), transparent);
  background-size: 320px 320px, 480px 480px, 640px 640px, 760px 760px, 900px 900px,
    1020px 1020px;
  animation: twinkle 18s linear infinite;
  opacity: 0.8;
}

.galaxy-layer--glow {
  background: radial-gradient(circle at 30% 20%, rgba(36, 245, 255, 0.18),
      transparent 45%),
    radial-gradient(circle at 80% 30%, rgba(59, 107, 255, 0.2), transparent 35%),
    radial-gradient(circle at 55% 70%, rgba(226, 92, 255, 0.18), transparent 40%);
}

@keyframes twinkle {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-10px);
  }
}

@media (prefers-reduced-motion: reduce) {
  #flag-image,
  .flag-wrapper,
  .flag-wrapper::before {
    transition: none !important;
  }
}

@media (max-width: 900px) {
  .game-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .search input {
    min-width: 0;
    width: 100%;
  }
}