/* ==========================================================================
   ULTA PAHALI — scoped game styles. Every selector is nested under .up-game
   so the plugin never touches the host theme's global elements.
   ========================================================================== */

.up-game {
  --up-bg: #080A12;
  --up-bg-secondary: #10131F;
  --up-card: #141827;
  --up-card-soft: rgba(20, 24, 39, 0.7);
  --up-text: #F8FAFC;
  --up-text-secondary: #94A3B8;
  --up-accent: #8B5CF6;
  --up-accent-2: #22D3EE;
  --up-success: #34D399;
  --up-warning: #F59E0B;
  --up-error: #F43F5E;
  --up-radius: 18px;
  --up-radius-sm: 12px;
  --up-shadow: 0 10px 30px rgba(0,0,0,0.45), 0 2px 8px rgba(0,0,0,0.3);
  --up-font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  all: initial;
  font-family: var(--up-font);
  display: block;
  width: 100%;
  max-width: 1100px;
  margin: 2rem auto;
  color: var(--up-text);
  box-sizing: border-box;
  position: relative;
  isolation: isolate;
}
.up-game *, .up-game *::before, .up-game *::after {
  box-sizing: border-box;
  font-family: var(--up-font);
}
.up-game a { color: var(--up-accent-2); text-decoration: none; }
.up-game button { font-family: var(--up-font); }

.up-game--disabled {
  background: var(--up-card);
  color: var(--up-text-secondary);
  padding: 2rem;
  border-radius: var(--up-radius);
  text-align: center;
}

.up-noscript {
  background: var(--up-card);
  color: var(--up-text);
  padding: 1.5rem;
  border-radius: var(--up-radius);
  text-align: center;
}

/* Root stage --------------------------------------------------------- */
.up-root {
  background: radial-gradient(circle at 20% 0%, rgba(139,92,246,0.15), transparent 55%),
              radial-gradient(circle at 90% 20%, rgba(34,211,238,0.12), transparent 45%),
              var(--up-bg);
  border-radius: var(--up-radius);
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
  min-height: 480px;
  box-shadow: var(--up-shadow);
  border: 1px solid rgba(255,255,255,0.06);
}

.up-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  gap: 1rem;
  color: var(--up-text-secondary);
}
.up-loading__spinner {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 3px solid rgba(139,92,246,0.25);
  border-top-color: var(--up-accent);
  animation: up-spin 0.8s linear infinite;
}
@keyframes up-spin { to { transform: rotate(360deg); } }

/* Floating background particles -------------------------------------- */
.up-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}
.up-particle {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139,92,246,0.35), transparent 70%);
  animation: up-float 14s ease-in-out infinite;
  filter: blur(1px);
}
@keyframes up-float {
  0%, 100% { transform: translate(0,0); }
  50% { transform: translate(15px, -25px); }
}

/* Top nav --------------------------------------------------------------- */
.up-topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
  margin-bottom: 1.25rem;
}
.up-brand { display: flex; flex-direction: column; gap: 0.15rem; }
.up-brand__title {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: linear-gradient(90deg, var(--up-text), var(--up-accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.up-brand__tagline {
  font-size: 0.78rem;
  color: var(--up-text-secondary);
}
.up-stats {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.up-stat {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--up-card-soft);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  font-size: 0.82rem;
  font-weight: 600;
}
.up-stat__icon { font-size: 1rem; }
.up-stat--xp { color: var(--up-accent-2); }
.up-stat--streak { color: var(--up-warning); }
.up-stat--level { color: var(--up-text); }

/* Screens ---------------------------------------------------------------- */
.up-screen { position: relative; z-index: 1; }
.up-screen[hidden] { display: none !important; }

/* Home screen -------------------------------------------------------- */
.up-home {
  text-align: center;
  padding: 2rem 0.5rem;
}
.up-home__logo {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: 0.03em;
  margin: 0 0 0.4rem;
  background: linear-gradient(90deg, var(--up-accent), var(--up-accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.up-home__tagline {
  color: var(--up-text-secondary);
  margin: 0 0 2rem;
  font-size: 1rem;
}
.up-home__menu {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem;
  max-width: 720px;
  margin: 0 auto;
}
.up-menu-btn {
  background: linear-gradient(145deg, var(--up-card), var(--up-bg-secondary));
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--up-radius-sm);
  color: var(--up-text);
  padding: 1rem 1.2rem;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0,0,0,0.35);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  min-height: 44px;
}
.up-menu-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(139,92,246,0.25);
  border-color: rgba(139,92,246,0.4);
}
.up-menu-btn:active { transform: translateY(-1px) scale(0.98); }
.up-menu-btn--primary {
  background: linear-gradient(135deg, var(--up-accent), #6d28d9);
  border-color: transparent;
  grid-column: 1 / -1;
  font-size: 1.05rem;
  padding: 1.1rem;
}
.up-menu-btn--ghost {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--up-text-secondary);
  font-weight: 500;
}

/* Play screen layout --------------------------------------------------- */
.up-play {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 860px) {
  .up-play { grid-template-columns: 1.6fr 1fr; align-items: start; }
}

.up-panel {
  background: var(--up-card-soft);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--up-radius);
  padding: 1.2rem;
}

/* Target card ------------------------------------------------------------ */
.up-target-card {
  text-align: center;
  position: relative;
  padding: 1.6rem 1rem 1.9rem;
  overflow: hidden;
}
.up-target-card::before {
  content: "";
  position: absolute;
  inset: -40% -20%;
  background: radial-gradient(circle, rgba(139,92,246,0.35), transparent 60%);
  animation: up-glow-pulse 3.4s ease-in-out infinite;
  z-index: 0;
}
@keyframes up-glow-pulse {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.08); }
}
.up-target-card__label {
  position: relative; z-index: 1;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--up-text-secondary);
  font-weight: 700;
  text-transform: uppercase;
}
.up-target-card__value {
  position: relative; z-index: 1;
  font-size: clamp(3rem, 10vw, 4.5rem);
  font-weight: 800;
  line-height: 1;
  margin: 0.35rem 0 0;
  color: var(--up-text);
  text-shadow: 0 0 24px rgba(139,92,246,0.55);
}
.up-target-card__world {
  position: relative; z-index: 1;
  margin-top: 0.5rem;
  font-size: 0.78rem;
  color: var(--up-accent-2);
  font-weight: 600;
}

/* Rules card ------------------------------------------------------------- */
.up-rules-card h3, .up-panel h3 {
  margin: 0 0 0.7rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--up-text-secondary);
  font-weight: 700;
}
.up-rules-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.up-rules-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.92rem;
  color: var(--up-text);
  background: rgba(255,255,255,0.03);
  border-radius: 10px;
  padding: 0.5rem 0.7rem;
}
.up-rules-list li .up-rule-icon { color: var(--up-success); flex-shrink: 0; }

/* Number tiles ------------------------------------------------------------ */
.up-numbers {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin: 1.1rem 0;
}
.up-tile {
  min-width: 56px;
  min-height: 56px;
  padding: 0.4rem 0.8rem;
  border-radius: 14px;
  background: linear-gradient(150deg, #1c2136, #12162a);
  border: 1px solid rgba(255,255,255,0.09);
  color: var(--up-text);
  font-size: 1.25rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 6px 0 rgba(0,0,0,0.35), 0 10px 18px rgba(0,0,0,0.35);
  transition: transform 0.12s ease, box-shadow 0.12s ease, opacity 0.15s ease;
  position: relative;
}
.up-tile:hover:not(:disabled) { transform: translateY(-3px); box-shadow: 0 9px 0 rgba(0,0,0,0.35), 0 14px 22px rgba(139,92,246,0.25); }
.up-tile:active:not(:disabled) { transform: translateY(2px); box-shadow: 0 3px 0 rgba(0,0,0,0.35); }
.up-tile:disabled, .up-tile--used {
  opacity: 0.3;
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 4px 0 rgba(0,0,0,0.2);
}
.up-tile--selected {
  border-color: var(--up-accent);
  box-shadow: 0 0 0 2px var(--up-accent), 0 8px 18px rgba(139,92,246,0.4);
}

.up-operators {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 1.1rem;
}
.up-op-btn {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(150deg, #241634, #1a1128);
  border: 1px solid rgba(139,92,246,0.35);
  color: var(--up-accent-2);
  font-size: 1.3rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease;
}
.up-op-btn:hover:not(:disabled) { transform: translateY(-2px); background: linear-gradient(150deg, #2d1c40, #1f1530); }
.up-op-btn:disabled { opacity: 0.25; cursor: not-allowed; }

/* Equation builder --------------------------------------------------------- */
.up-equation-card {
  text-align: center;
}
.up-equation {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.4rem;
  background: rgba(0,0,0,0.25);
  border: 1px dashed rgba(255,255,255,0.15);
  border-radius: 12px;
  padding: 0.7rem;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}
.up-equation__chip {
  padding: 0.2rem 0.6rem;
  border-radius: 8px;
  background: rgba(139,92,246,0.18);
  color: var(--up-text);
}
.up-equation__chip--op { color: var(--up-accent-2); background: transparent; }
.up-equation__placeholder { color: var(--up-text-secondary); font-size: 0.95rem; font-weight: 500; }
.up-equation__result {
  font-size: 0.95rem;
  color: var(--up-text-secondary);
  margin-bottom: 0.9rem;
}
.up-equation__result strong { color: var(--up-text); font-size: 1.1rem; }

.up-equation-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* Buttons -------------------------------------------------------------- */
.up-btn {
  border: none;
  border-radius: 12px;
  padding: 0.75rem 1.3rem;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--up-text);
  background: rgba(255,255,255,0.06);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.15s ease;
  min-height: 44px;
}
.up-btn:hover { transform: translateY(-2px); }
.up-btn:active { transform: translateY(1px); }
.up-btn--primary {
  background: linear-gradient(135deg, var(--up-accent), var(--up-accent-2));
  box-shadow: 0 8px 22px rgba(139,92,246,0.4);
}
.up-btn--success { background: linear-gradient(135deg, var(--up-success), #059669); }
.up-btn--danger { background: linear-gradient(135deg, var(--up-error), #be123c); }
.up-btn--ghost { background: transparent; border: 1px solid rgba(255,255,255,0.14); }
.up-btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.up-btn--block { width: 100%; }
.up-btn--sm { padding: 0.5rem 0.9rem; font-size: 0.85rem; min-height: 38px; }

/* Right column widgets ----------------------------------------------------- */
.up-side-stack { display: flex; flex-direction: column; gap: 1rem; }
.up-timer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
}
.up-timer__bar {
  height: 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
  margin-top: 0.5rem;
}
.up-timer__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--up-success), var(--up-accent-2));
  transition: width 1s linear, background 0.3s ease;
  width: 100%;
}
.up-timer--warning .up-timer__fill { background: linear-gradient(90deg, var(--up-warning), var(--up-error)); animation: up-timer-pulse 0.6s infinite; }
@keyframes up-timer-pulse { 50% { opacity: 0.5; } }

.up-solutions-progress {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--up-text-secondary);
}

.up-hint-box {
  font-size: 0.88rem;
  color: var(--up-accent-2);
  background: rgba(34,211,238,0.08);
  border: 1px solid rgba(34,211,238,0.25);
  border-radius: 10px;
  padding: 0.6rem 0.8rem;
  margin-top: 0.6rem;
  display: none;
}
.up-hint-box.up-visible { display: block; }

/* Feedback banner ---------------------------------------------------------- */
.up-feedback {
  margin-top: 0.8rem;
  padding: 0.7rem 0.9rem;
  border-radius: 10px;
  font-size: 0.92rem;
  font-weight: 600;
  display: none;
}
.up-feedback.up-visible { display: block; animation: up-feedback-in 0.25s ease; }
.up-feedback--success { background: rgba(52,211,153,0.12); color: var(--up-success); border: 1px solid rgba(52,211,153,0.3); }
.up-feedback--error { background: rgba(244,63,94,0.1); color: var(--up-error); border: 1px solid rgba(244,63,94,0.3); animation: up-shake 0.4s ease; }
@keyframes up-feedback-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
@keyframes up-shake {
  10%, 90% { transform: translateX(-1px); }
  20%, 80% { transform: translateX(2px); }
  30%, 50%, 70% { transform: translateX(-4px); }
  40%, 60% { transform: translateX(4px); }
}

.up-rarity-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-left: 0.4rem;
  vertical-align: middle;
}
.up-rarity-common { background: rgba(148,163,184,0.15); color: var(--up-text-secondary); }
.up-rarity-uncommon { background: rgba(52,211,153,0.15); color: var(--up-success); }
.up-rarity-rare { background: rgba(34,211,238,0.15); color: var(--up-accent-2); }
.up-rarity-ultra { background: linear-gradient(135deg, rgba(139,92,246,0.25), rgba(244,63,94,0.2)); color: #fbbf24; }

/* Modal ---------------------------------------------------------------- */
.up-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(4,5,10,0.75);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.up-modal-overlay.up-visible { opacity: 1; pointer-events: auto; }
.up-modal {
  background: linear-gradient(160deg, #171b2c, #10131f);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  padding: 1.8rem;
  max-width: 420px;
  width: 100%;
  text-align: center;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6);
  transform: scale(0.9);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.up-modal-overlay.up-visible .up-modal { transform: scale(1); }
.up-modal__emoji { font-size: 2.6rem; margin-bottom: 0.3rem; }
.up-modal__title { font-size: 1.3rem; font-weight: 800; margin: 0 0 0.3rem; }
.up-modal__subtitle { color: var(--up-text-secondary); margin: 0 0 1rem; font-size: 0.9rem; }
.up-modal__target { font-size: 2.2rem; font-weight: 800; margin: 0.3rem 0; }
.up-modal__solution { font-size: 1.05rem; color: var(--up-accent-2); margin-bottom: 0.8rem; }
.up-modal__xp {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--up-success);
  margin: 0.6rem 0;
}
.up-modal__breakdown {
  font-size: 0.82rem;
  color: var(--up-text-secondary);
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.up-modal__actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* How to play slides ------------------------------------------------------- */
.up-tutorial__slide { display: none; text-align: center; }
.up-tutorial__slide.up-active { display: block; }
.up-tutorial__dots { display: flex; justify-content: center; gap: 0.4rem; margin-top: 1rem; }
.up-tutorial__dot { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.2); }
.up-tutorial__dot.up-active { background: var(--up-accent-2); }

/* Achievements ------------------------------------------------------------ */
.up-achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 0.7rem;
}
.up-achievement {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 0.8rem;
  text-align: center;
  opacity: 0.4;
  filter: grayscale(1);
  transition: opacity 0.3s ease, filter 0.3s ease, transform 0.2s ease;
}
.up-achievement.up-unlocked { opacity: 1; filter: none; }
.up-achievement.up-unlocked:hover { transform: translateY(-3px); }
.up-achievement__icon { font-size: 1.7rem; display: block; margin-bottom: 0.3rem; }
.up-achievement__name { font-size: 0.8rem; font-weight: 700; }
.up-achievement__desc { font-size: 0.7rem; color: var(--up-text-secondary); margin-top: 0.2rem; }

.up-toast {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--up-card);
  border: 1px solid rgba(139,92,246,0.4);
  border-radius: 12px;
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 30;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
  pointer-events: none;
}
.up-toast.up-show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Confetti ---------------------------------------------------------------- */
.up-confetti-piece {
  position: absolute;
  width: 8px;
  height: 14px;
  top: -20px;
  border-radius: 2px;
  animation: up-confetti-fall linear forwards;
  z-index: 25;
}
@keyframes up-confetti-fall {
  to { transform: translateY(420px) rotate(540deg); opacity: 0; }
}

/* Form controls (create puzzle) -------------------------------------------- */
.up-field { margin-bottom: 0.9rem; text-align: left; }
.up-field label { display: block; font-size: 0.82rem; color: var(--up-text-secondary); margin-bottom: 0.3rem; font-weight: 600; }
.up-field input[type="text"],
.up-field input[type="number"] {
  width: 100%;
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  padding: 0.6rem 0.7rem;
  color: var(--up-text);
  font-size: 0.95rem;
  min-height: 44px;
}
.up-field input:focus, .up-tile:focus-visible, .up-op-btn:focus-visible, .up-btn:focus-visible, .up-menu-btn:focus-visible {
  outline: 2px solid var(--up-accent-2);
  outline-offset: 2px;
}
.up-checkbox-row { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.up-checkbox-row label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(255,255,255,0.04);
  padding: 0.4rem 0.7rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--up-text);
}

.up-share-row { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.8rem; }

/* Sound toggle --------------------------------------------------------- */
.up-sound-toggle {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 999px;
  color: var(--up-text-secondary);
  padding: 0.4rem 0.7rem;
  font-size: 0.85rem;
  cursor: pointer;
}

/* Utility ---------------------------------------------------------------- */
.up-center { text-align: center; }
.up-mt-1 { margin-top: 0.6rem; }
.up-small { font-size: 0.8rem; color: var(--up-text-secondary); }

/* Reduced motion ----------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .up-game *, .up-game *::before, .up-game *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* Responsive breakpoints --------------------------------------------------- */
@media (max-width: 480px) {
  .up-root { padding: 1rem; }
  .up-target-card__value { font-size: 2.6rem; }
  .up-tile { min-width: 48px; min-height: 48px; font-size: 1.05rem; padding: 0.3rem 0.6rem; }
  .up-op-btn { width: 44px; height: 44px; }
  .up-home__menu { grid-template-columns: 1fr; }
  .up-topnav { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 360px) {
  .up-tile { min-width: 44px; min-height: 44px; font-size: 0.95rem; }
}