/* ════════════════════════════════════════════
   FLAGS OF THE WORLD — Dark Geo Aesthetic
   Font: Unbounded (display) + Inter (body)
   ════════════════════════════════════════════ */

:root {
  --bg:       #0a0c12;
  --surface:  #111520;
  --card:     #161b2e;
  --border:   #232a42;
  --text:     #e8ecf7;
  --muted:    #6b7494;
  --accent:   #4f8cff;
  --accent2:  #a78bfa;
  --correct:  #22d3a3;
  --wrong:    #f4536a;
  --glow-a:   rgba(79,140,255,.18);
  --glow-b:   rgba(167,139,250,.12);
  --r:        16px;
  --r-lg:     24px;
  --transition: .22s cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

/* ── Background decorations ── */
.bg-grid {
  position: fixed; inset: 0; z-index: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: .35;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000 30%, transparent 100%);
}

.bg-glow {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 20% 20%, var(--glow-a), transparent),
    radial-gradient(ellipse 50% 60% at 80% 80%, var(--glow-b), transparent);
}

/* ── Layout ── */
.wrapper {
  position: relative; z-index: 1;
  min-height: 100dvh;
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
}

/* ── Screens ── */
.screen {
  display: none; width: 100%; max-width: 540px;
  flex-direction: column; align-items: center; gap: 1.5rem;
  animation: fadeUp .4s ease both;
}
.screen.active { display: flex; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Hero / Start ── */
.hero-icon {
  font-size: 5rem; line-height: 1;
  filter: drop-shadow(0 0 24px rgba(79,140,255,.5));
  animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { transform: scale(1); }
  50%      { transform: scale(1.06); }
}

.hero-title {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(2.4rem, 8vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  text-align: center;
  letter-spacing: -.02em;
}
.hero-title span {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  color: var(--muted); text-align: center;
  font-size: 1rem; line-height: 1.6;
}

.hero-hint {
  color: var(--muted); font-size: .78rem; letter-spacing: .06em;
  border: 1px solid var(--border); border-radius: 100px;
  padding: .3rem .9rem;
}

/* ── Primary button ── */
.btn-start {
  font-family: 'Unbounded', sans-serif;
  font-size: 1rem; font-weight: 600;
  letter-spacing: .04em;
  padding: .9rem 2.8rem;
  border: none; border-radius: 100px; cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  box-shadow: 0 4px 24px rgba(79,140,255,.35);
  transition: var(--transition);
  position: relative; overflow: hidden;
}
.btn-start::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.15), transparent);
  opacity: 0; transition: var(--transition);
}
.btn-start:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(79,140,255,.45); }
.btn-start:hover::after { opacity: 1; }
.btn-start:active { transform: translateY(0); }

/* ══════════════════════════════════
   GAME SCREEN
══════════════════════════════════ */

/* Header row */
.game-header {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
}

.stat-box {
  display: flex; flex-direction: column; align-items: center;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); padding: .7rem 1.4rem;
  min-width: 80px;
}
.stat-label { font-size: .7rem; letter-spacing: .08em; color: var(--muted); text-transform: uppercase; }
.stat-val {
  font-family: 'Unbounded', sans-serif;
  font-size: 1.6rem; font-weight: 700; line-height: 1.2;
}
.correct-count { color: var(--correct); }
.wrong-count   { color: var(--wrong); }

/* Timer ring */
.timer-ring {
  position: relative;
  width: 90px; height: 90px;
  flex-shrink: 0;
}
.timer-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-bg  { fill: none; stroke: var(--border); stroke-width: 8; }
.ring-fill {
  fill: none; stroke: url(#timerGrad); stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset .9s linear, stroke .3s;
}
#timer-text {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Unbounded', sans-serif;
  font-size: 1.35rem; font-weight: 700;
}

/* Flag stage */
.flag-stage {
  width: 220px; height: 160px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,0,0,.5);
}
.flag-img {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: calc(var(--r-lg) - 1px);
  transition: transform .18s ease, opacity .18s ease;
  user-select: none;
  display: block;
}
.flag-stage.flip .flag-img { transform: scale(.1); opacity: 0; }
.flag-shine {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.06) 0%, transparent 50%);
  pointer-events: none;
}

/* Options grid */
.options-grid {
  width: 100%;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: .75rem;
}

.opt-btn {
  position: relative;
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--r); padding: .9rem 1rem;
  color: var(--text);
  font-family: 'Inter', sans-serif; font-size: .95rem; font-weight: 500;
  cursor: pointer; text-align: left;
  display: flex; align-items: center; gap: .6rem;
  transition: var(--transition);
  overflow: hidden;
}
.opt-btn::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  opacity: 0; transition: var(--transition);
  border-radius: inherit;
}
.opt-btn:hover:not(:disabled) {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(79,140,255,.2);
}
.opt-btn:hover:not(:disabled)::before { opacity: .07; }

.key-hint {
  position: relative; z-index: 1;
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; flex-shrink: 0;
  background: var(--border); border-radius: 6px;
  font-size: .72rem; color: var(--muted);
  font-family: 'Unbounded', sans-serif; font-weight: 600;
}
.opt-text { position: relative; z-index: 1; }

/* Correct / Wrong states */
.opt-btn.correct {
  background: rgba(34,211,163,.12);
  border-color: var(--correct);
  color: var(--correct);
}
.opt-btn.correct .key-hint { background: var(--correct); color: #000; }

.opt-btn.wrong {
  background: rgba(244,83,106,.1);
  border-color: var(--wrong);
  color: var(--wrong);
}
.opt-btn.wrong .key-hint { background: var(--wrong); color: #fff; }

.opt-btn:disabled { cursor: default; }

/* Feedback */
.feedback {
  font-family: 'Unbounded', sans-serif;
  font-size: .85rem; font-weight: 600;
  min-height: 1.4rem; text-align: center;
  letter-spacing: .04em;
  transition: opacity .2s;
}
.feedback.correct-fb { color: var(--correct); }
.feedback.wrong-fb   { color: var(--wrong); }

/* ══════════════════════════════════
   RESULT SCREEN
══════════════════════════════════ */
.result-trophy {
  font-size: 5rem; line-height: 1;
  filter: drop-shadow(0 0 24px rgba(255,200,0,.4));
  animation: pulse 2s ease-in-out infinite;
}
.result-title {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(1.6rem,5vw,2.4rem);
  font-weight: 800;
  text-align: center;
}

.result-stats {
  display: flex; align-items: center; gap: 1rem;
}
.rs-box { text-align: center; }
.rs-num {
  font-family: 'Unbounded', sans-serif;
  font-size: 2.4rem; font-weight: 800; line-height: 1;
}
.rs-correct .rs-num { color: var(--correct); }
.rs-wrong   .rs-num { color: var(--wrong); }
.rs-total   .rs-num { color: var(--accent2); }
.rs-label { font-size: .7rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; margin-top: .3rem; }
.rs-divider { color: var(--border); font-size: 1.5rem; }

/* Percent bar */
.result-pct { width: 100%; }
.pct-bar {
  width: 100%; height: 10px;
  background: var(--border); border-radius: 100px;
  overflow: hidden;
}
.pct-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--correct));
  border-radius: 100px;
  transition: width 1s cubic-bezier(.4,0,.2,1);
}
.pct-text {
  margin-top: .5rem;
  font-size: .85rem; color: var(--muted); text-align: right;
}

/* Share box */
.share-box {
  width: 100%;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 1rem;
  display: flex; flex-direction: column; gap: .5rem;
}
.share-label { font-size: .75rem; color: var(--muted); text-transform: uppercase; letter-spacing: .07em; }
.share-row { display: flex; gap: .5rem; }
.share-input {
  flex: 1; background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: .55rem .9rem;
  color: var(--text); font-size: .85rem; font-family: 'Inter', sans-serif;
  outline: none;
}
.copy-btn {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; flex-shrink: 0;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; cursor: pointer; color: var(--muted);
  transition: var(--transition);
}
.copy-btn svg { width: 16px; height: 16px; }
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.copy-btn.copied { border-color: var(--correct); color: var(--correct); background: rgba(34,211,163,.1); }

/* Utility animation */
.anim-in { animation: fadeUp .5s ease both; }

/* ── Responsive ── */
@media (max-width: 400px) {
  .hero-title { font-size: 2rem; }
  .flag-stage { width: 180px; height: 130px; }
  .options-grid { grid-template-columns: 1fr; }
}

/* ── V2 mode button (top-right of start screen) ── */
.btn-v2-mode {
  position: absolute;
  top: 1.25rem; right: 1.25rem;
  display: inline-flex; align-items: center; gap: .35rem;
  text-decoration: none;
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  padding: .4rem .85rem .4rem .5rem;
  color: var(--text);
  font-size: .78rem;
  transition: var(--transition);
  z-index: 10;
}
.btn-v2-mode:hover {
  border-color: var(--accent2);
  background: rgba(167,139,250,.08);
  color: var(--accent2);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(167,139,250,.2);
}
.btn-v2-badge {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  font-family: 'Unbounded', sans-serif;
  font-size: .65rem; font-weight: 700;
  padding: .15rem .45rem;
  border-radius: 100px;
  letter-spacing: .05em;
}
.btn-v2-label {
  font-family: 'Unbounded', sans-serif;
  font-weight: 600; font-size: .72rem;
  letter-spacing: .03em;
}
.btn-v2-arrow { font-size: .8rem; opacity: .6; }

/* Make start screen wrapper relative so absolute button works */
#start-screen { position: relative; }
.captcha-wrap {
  display: flex;
  justify-content: center;
  filter: drop-shadow(0 4px 16px rgba(79,140,255,.2));
}

.btn-start:disabled {
  opacity: .35;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}
.btn-start:disabled::after { display: none; }

/* ── Swimming Cat ──────────────────────────────────────────────── */
#swimming-cat {
  position: fixed;
  z-index: 0;
  pointer-events: none;
  width: 110px;
  height: auto;
  opacity: 0.18;
  filter: drop-shadow(0 4px 18px rgba(80,120,255,0.25));
  will-change: transform;
  border-radius: 50% 50% 50% 50% / 40% 40% 60% 60%;
}