:root {
  color-scheme: dark;
  --bg: #050705;
  --bg-2: #0b100d;
  --panel: #111611;
  --panel-2: #171f18;
  --line: #273127;
  --line-strong: #36503a;
  --green: #1db954;
  --green-2: #32d66b;
  --green-deep: #0d7e36;
  --text: #f4fff7;
  --muted: #9daf9f;
  --danger: #ff6b7a;
  --warn: #f2c94c;
  --shadow: 0 24px 70px rgba(0, 0, 0, .42);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 20% 0%, rgba(29, 185, 84, .12), transparent 30rem),
    linear-gradient(135deg, var(--bg), #080908 52%, #0a160e);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(18px, 4vw, 52px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 800;
}

.brand-mark {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 7px rgba(29, 185, 84, .14);
}

.icon-button {
  width: 48px;
  height: 48px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(17, 22, 17, .82);
  color: var(--text);
  transition: border-color .18s ease, transform .18s ease, background .18s ease;
}

.icon-button:hover,
.icon-button:focus-visible {
  border-color: var(--green);
  background: rgba(29, 185, 84, .12);
  transform: translateY(-1px);
  outline: none;
}

.icon-button svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.9;
}

.icon-button.compact {
  width: 40px;
  height: 40px;
}

.game-layout {
  width: min(100%, 980px);
  margin: 0 auto;
  padding: 16px clamp(16px, 3vw, 28px) 44px;
  display: grid;
  gap: 22px;
}

.score-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.score-strip > div,
.feedback-panel,
.end-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(17, 22, 17, .82);
  box-shadow: var(--shadow);
}

.score-strip > div {
  min-height: 76px;
  display: grid;
  align-content: center;
  gap: 5px;
  padding: 16px;
}

.stat-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0;
  text-transform: uppercase;
}

.score-strip strong {
  min-width: 0;
  color: var(--text);
  font-size: clamp(22px, 4vw, 34px);
  line-height: 1;
  overflow-wrap: anywhere;
}

.flag-stage {
  display: grid;
  place-items: center;
  min-height: clamp(230px, 46vh, 430px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, .035), transparent),
    rgba(12, 16, 12, .78);
  box-shadow: var(--shadow);
  padding: clamp(18px, 4vw, 38px);
}

.flag-frame {
  position: relative;
  width: min(100%, 640px);
  aspect-ratio: 3 / 2;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background:
    linear-gradient(45deg, rgba(255, 255, 255, .08) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255, 255, 255, .08) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(255, 255, 255, .08) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(255, 255, 255, .08) 75%),
    #151a15;
  background-position: 0 0, 0 16px, 16px -16px, -16px 0;
  background-size: 32px 32px;
}

.flag-frame img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  background: #f6f6f6;
}

.flag-frame img.is-loading {
  opacity: 0;
}

.flag-fallback {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  color: var(--muted);
  font-size: clamp(54px, 18vw, 140px);
  font-weight: 900;
}

.flag-frame.has-fallback img {
  display: none;
}

.flag-frame.has-fallback .flag-fallback {
  display: grid;
}

.answer-area {
  min-height: 136px;
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.answer-button,
.primary-button,
.secondary-button {
  min-height: 52px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 12px 20px;
  color: var(--text);
  font-weight: 800;
  transition: transform .16s ease, border-color .16s ease, background .16s ease, color .16s ease;
}

.answer-button {
  width: 100%;
  min-height: 68px;
  border-color: var(--line);
  border-radius: 8px;
  background: var(--panel);
  text-align: left;
  overflow-wrap: anywhere;
}

.answer-button:hover,
.answer-button:focus-visible {
  border-color: var(--green);
  background: #18231a;
  transform: translateY(-1px);
  outline: none;
}

.answer-button.correct {
  border-color: var(--green);
  background: rgba(29, 185, 84, .18);
  color: var(--green-2);
}

.answer-button.incorrect {
  border-color: rgba(255, 107, 122, .78);
  background: rgba(255, 107, 122, .12);
  color: #ffd7dc;
}

.hard-form {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
}

.guess-wrap {
  position: relative;
}

.hard-form input,
.number-field input {
  width: 100%;
  min-height: 54px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  padding: 0 16px;
  outline: none;
  transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}

.hard-form input:focus,
.number-field input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(29, 185, 84, .14);
  background: #121a13;
}

.suggestion-list {
  position: absolute;
  z-index: 5;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  max-height: 270px;
  overflow: auto;
  padding: 6px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: #111811;
  box-shadow: var(--shadow);
}

.suggestion-list[hidden] {
  display: none;
}

.suggestion-list button {
  width: 100%;
  min-height: 42px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--text);
  text-align: left;
  padding: 9px 10px;
}

.suggestion-list button:hover,
.suggestion-list button:focus-visible {
  background: rgba(29, 185, 84, .16);
  outline: none;
}

.primary-button {
  background: var(--green);
  color: #041005;
}

.primary-button:hover,
.primary-button:focus-visible {
  background: var(--green-2);
  transform: translateY(-1px);
  outline: none;
}

.secondary-button {
  border-color: var(--line);
  background: transparent;
}

.secondary-button:hover,
.secondary-button:focus-visible {
  border-color: var(--green);
  background: rgba(29, 185, 84, .1);
  outline: none;
}

.feedback-panel,
.end-panel {
  padding: 18px;
}

.feedback-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.feedback-panel[hidden],
.end-panel[hidden] {
  display: none;
}

.feedback-panel p {
  margin: 0;
  color: var(--text);
  font-size: clamp(17px, 2vw, 22px);
  font-weight: 800;
}

.feedback-panel.is-correct p {
  color: var(--green-2);
}

.feedback-panel.is-wrong p {
  color: #ffd7dc;
}

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

.end-panel h1 {
  margin: 8px 0 20px;
  font-size: clamp(44px, 14vw, 96px);
  line-height: .95;
}

.settings-dialog {
  width: min(94vw, 520px);
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  box-shadow: var(--shadow);
}

.settings-dialog::backdrop {
  background: rgba(0, 0, 0, .74);
  backdrop-filter: blur(8px);
}

.settings-panel {
  display: grid;
  gap: 22px;
  padding: 22px;
  background: var(--bg-2);
}

.settings-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.settings-head h2 {
  margin: 0;
  font-size: 24px;
}

.field-group {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.field-group legend,
.number-field span {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.segmented-control {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
}

.segmented-control label {
  min-width: 0;
}

.segmented-control input,
.toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segmented-control span {
  min-height: 42px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 850;
}

.segmented-control input:checked + span {
  background: var(--green);
  color: #041005;
}

.toggle-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.toggle {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font-weight: 750;
}

.toggle span:first-of-type {
  min-width: 0;
  overflow-wrap: anywhere;
}

.switch {
  width: 46px;
  height: 26px;
  flex: 0 0 auto;
  position: relative;
  border-radius: 999px;
  background: #293129;
  transition: background .18s ease;
}

.switch::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text);
  transition: transform .18s ease;
}

.toggle input:checked ~ .switch {
  background: var(--green);
}

.toggle input:checked ~ .switch::after {
  transform: translateX(20px);
  background: #041005;
}

.settings-error {
  margin: 0;
  color: var(--warn);
  font-weight: 700;
}

.settings-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

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

@media (max-width: 720px) {
  .topbar {
    height: 64px;
  }

  .game-layout {
    gap: 16px;
    padding-bottom: 26px;
  }

  .score-strip {
    grid-template-columns: 1fr 1fr;
  }

  .score-strip > div:last-child {
    grid-column: 1 / -1;
  }

  .flag-stage {
    min-height: 220px;
  }

  .option-grid,
  .hard-form,
  .toggle-grid {
    grid-template-columns: 1fr;
  }

  .feedback-panel {
    align-items: stretch;
    flex-direction: column;
  }

  .feedback-panel .primary-button,
  .hard-form .primary-button {
    width: 100%;
  }
}