/* ============================================================
   MATH ASCENT — Times Tables Learning Game
   ============================================================ */

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

:root {
  --font: 'Outfit', system-ui, sans-serif;
  --bg: #06091a;
  --surface: rgba(255,255,255,0.05);
  --border: rgba(255,255,255,0.12);
  --text: #ffffff;
  --muted: rgba(255,255,255,0.55);
  --accent: #a78bfa;
  --accent-glow: rgba(167,139,250,0.4);
  --green: #34d399;
  --green-glow: rgba(52,211,153,0.35);
  --red: #f87171;
  --red-glow: rgba(248,113,113,0.35);
  --gold: #fbbf24;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, #1e0a4a 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 120%, #0c2a5e 0%, transparent 60%);
  color: var(--text);
  min-height: 100vh;
}

/* ── Screens ─────────────────────────────────────────────── */
.screen {
  display: none;
  width: 100%;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 0; left: 0;
}
.screen.active { display: flex; }


/* ════════════════════════════════════════════════════════════
   SETUP SCREEN
   ════════════════════════════════════════════════════════════ */
.setup-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  padding: 40px 32px;
  width: min(600px, 96vw);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 28px;
  backdrop-filter: blur(12px);
  box-shadow: 0 0 80px rgba(167,139,250,0.07);
}

.logo-area {
  text-align: center;
}
.logo-rocket {
  font-size: 3.5rem;
  margin-bottom: 8px;
  animation: bob 2.5s ease-in-out infinite;
}
@keyframes bob {
  0%,100% { transform: translateY(0); }
  50%  { transform: translateY(-10px); }
}

h1 {
  font-size: 3rem;
  font-weight: 900;
  background: linear-gradient(135deg, #c4b5fd, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.03em;
}

.tagline {
  color: var(--muted);
  font-size: 1rem;
  margin-top: 6px;
}

.setup-section {
  width: 100%;
}
.setup-row {
  display: flex;
  gap: 20px;
}

.section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

/* Table checkboxes */
.table-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}

.table-chip {
  position: relative;
  cursor: pointer;
}
.table-chip input {
  position: absolute;
  opacity: 0;
  width: 0; height: 0;
}
.table-chip-label {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  border-radius: 10px;
  border: 2px solid var(--border);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--muted);
  background: var(--surface);
  transition: all 0.18s;
  cursor: pointer;
}
.table-chip input:checked + .table-chip-label {
  border-color: var(--accent);
  background: rgba(167,139,250,0.18);
  color: var(--text);
  box-shadow: 0 0 14px var(--accent-glow);
}
.table-chip-label:hover {
  border-color: rgba(167,139,250,0.5);
  color: var(--text);
}

.quick-select-row {
  display: flex;
  gap: 8px;
}
.qs-btn {
  flex: 1;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition: all 0.15s;
}
.qs-btn:hover {
  background: rgba(255,255,255,0.08);
  color: var(--text);
  border-color: var(--accent);
}

/* Rival difficulty chips */
.rival-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}
.rival-chip {
  position: relative;
  cursor: pointer;
}
.rival-chip input {
  position: absolute;
  opacity: 0;
  width: 0; height: 0;
}
.rival-chip-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 10px 6px;
  border-radius: 12px;
  border: 2px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  transition: all 0.18s;
  text-align: center;
}
.rival-chip input:checked + .rival-chip-label {
  border-color: #f87171;
  background: rgba(248,113,113,0.15);
  box-shadow: 0 0 14px rgba(248,113,113,0.35);
}
.rival-chip-label:hover {
  border-color: rgba(248,113,113,0.5);
}
.rival-icon { font-size: 1.4rem; }
.rival-name { font-size: 0.8rem; font-weight: 800; color: var(--text); }
.rival-desc { font-size: 0.65rem; color: var(--muted); }

/* Setup fields */
.setup-field {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.setup-field label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.styled-select {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 11px 14px;
  border-radius: 10px;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
}
.styled-select:focus { border-color: var(--accent); }
.styled-select option { background: #0f1225; }

/* Launch button */
.btn-launch {
  width: 100%;
  font-family: var(--font);
  font-size: 1.3rem;
  font-weight: 800;
  padding: 18px;
  border-radius: 14px;
  border: none;
  background: linear-gradient(135deg, #7c3aed, #4f46e5);
  color: white;
  cursor: pointer;
  box-shadow: 0 4px 24px rgba(124,58,237,0.45);
  transition: all 0.2s cubic-bezier(0.2,0.8,0.2,1);
  letter-spacing: 0.02em;
}
.btn-launch:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(124,58,237,0.6);
}
.btn-launch:active { transform: scale(0.97); }

.btn-back-hub {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: all 0.2s;
  text-align: center;
}
.btn-back-hub:hover {
  background: var(--surface);
  color: var(--text);
}


/* ════════════════════════════════════════════════════════════
   GAME SCREEN
   ════════════════════════════════════════════════════════════ */
#screen-game {
  flex-direction: row;
  align-items: stretch;
}

/* Top HUD */
.top-hud {
  position: fixed;
  top: 0; left: 0; right: 0;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 32px;
  background: rgba(6,9,26,0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.hud-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hud-label {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.hud-value {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
}

.hud-progress-bar {
  width: 140px;
  height: 6px;
  background: rgba(255,255,255,0.1);
  border-radius: 99px;
  overflow: hidden;
  margin: 2px 0;
}
.hud-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #818cf8, #a78bfa);
  border-radius: 99px;
  width: 0%;
  transition: width 0.4s ease;
}

.btn-exit-game {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 1rem;
  width: 36px; height: 36px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex; align-items: center; justify-content: center;
}
.btn-exit-game:hover { background: rgba(255,255,255,0.08); color: var(--text); }

/* Rocket Track */
.rocket-track {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: 90px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: 32px;
  padding-top: 72px;
  background: rgba(255,255,255,0.02);
  border-right: 1px solid var(--border);
  overflow: hidden;
}

.stars-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.planet {
  position: absolute;
  font-size: 1.6rem;
  opacity: 0.7;
  left: 50%;
  transform: translateX(-50%);
}
.planet-top  { top: 80px; }
.planet-mid  { top: 45%; }
.planet-bot  { bottom: 80px; }

.rocket-ship {
  position: absolute;
  font-size: 2rem;
  right: 10px;
  transform: rotate(-90deg);
  bottom: 80px;
  transition: bottom 0.6s cubic-bezier(0.2,0.8,0.2,1);
  filter: drop-shadow(0 0 10px rgba(167,139,250,0.8));
}

/* UFO Rival Ship */
.ufo-ship {
  position: absolute;
  font-size: 2rem;
  left: 10px;
  bottom: 80px;
  transition: bottom 0.8s cubic-bezier(0.2,0.8,0.2,1);
  filter: drop-shadow(0 0 12px rgba(248,113,113,0.9));
  animation: ufo-wobble 1.8s ease-in-out infinite;
}
@keyframes ufo-wobble {
  0%,100% { transform: rotate(-5deg) scale(1); }
  50%      { transform: rotate(5deg) scale(1.08); }
}
.ufo-ship.ufo-danger {
  filter: drop-shadow(0 0 18px rgba(248,113,113,1));
  animation: ufo-danger-pulse 0.5s ease-in-out infinite;
}
@keyframes ufo-danger-pulse {
  0%,100% { transform: scale(1); filter: drop-shadow(0 0 18px rgba(248,113,113,1)); }
  50%      { transform: scale(1.15); filter: drop-shadow(0 0 30px rgba(255,50,50,1)); }
}

/* Lead label */
.lead-label {
  position: absolute;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border-radius: 99px;
  color: var(--text);
  background: rgba(0,0,0,0.5);
  white-space: nowrap;
  transition: all 0.4s;
  text-align: center;
  max-width: 80px;
}

/* Game Arena */
.game-arena {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 72px;
  padding-left: 90px;
  position: relative;
  min-height: 100vh;
}

/* Problem Card */
.problem-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  padding: 48px 60px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 28px;
  backdrop-filter: blur(8px);
  box-shadow: 0 0 60px rgba(167,139,250,0.08);
  transition: transform 0.15s;
  max-width: 480px;
  width: 90%;
}
.problem-card.shake {
  animation: shake 0.4s ease;
}
.problem-card.flash-correct {
  animation: flash-green 0.35s ease;
}
@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%      { transform: translateX(-10px); }
  40%      { transform: translateX(10px); }
  60%      { transform: translateX(-8px); }
  80%      { transform: translateX(8px); }
}
@keyframes flash-green {
  0%   { box-shadow: 0 0 60px rgba(167,139,250,0.08); }
  50%  { box-shadow: 0 0 80px var(--green-glow); border-color: var(--green); }
  100% { box-shadow: 0 0 60px rgba(167,139,250,0.08); }
}

.problem-equation {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  text-align: center;
  background: linear-gradient(135deg, #fff 60%, #c4b5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.answer-area {
  display: flex;
  gap: 12px;
  align-items: center;
}

.answer-input {
  font-family: var(--font);
  font-size: 2.8rem;
  font-weight: 900;
  width: 140px;
  padding: 12px 20px;
  text-align: center;
  background: rgba(0,0,0,0.3);
  border: 3px solid var(--border);
  border-radius: 14px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  letter-spacing: 0.05em;
}
.answer-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}
.answer-input.correct {
  border-color: var(--green);
  box-shadow: 0 0 20px var(--green-glow);
  color: var(--green);
}
.answer-input.wrong {
  border-color: var(--red);
  box-shadow: 0 0 20px var(--red-glow);
  color: var(--red);
}
.answer-input.correction-mode {
  width: 200px;
  font-size: 2rem;
  border-color: #fbbf24;
  box-shadow: 0 0 20px rgba(251,191,36,0.3);
}
.answer-input.correction-mode:focus {
  border-color: #fbbf24;
  box-shadow: 0 0 28px rgba(251,191,36,0.5);
}

.btn-submit {
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 700;
  padding: 14px 20px;
  border-radius: 10px;
  border: none;
  background: linear-gradient(135deg, #7c3aed, #4f46e5);
  color: white;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: 0 3px 12px rgba(124,58,237,0.4);
}
.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(124,58,237,0.5);
}
.btn-submit:active { transform: scale(0.96); }

.hint-row {
  font-size: 0.85rem;
  color: var(--muted);
}
kbd {
  background: rgba(255,255,255,0.1);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: monospace;
}

/* Correction panel */
.correction-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 32px 48px;
  background: rgba(251,191,36,0.08);
  border: 2px solid #fbbf24;
  border-radius: 20px;
  max-width: 360px;
  width: 90%;
  animation: fade-in 0.3s ease;
}
.correction-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: #fbbf24;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.correction-answer {
  font-size: 4rem;
  font-weight: 900;
  color: #fbbf24;
  text-shadow: 0 0 24px rgba(251,191,36,0.5);
}
.correction-type-label {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Combo badge */
.combo-badge {
  position: absolute;
  top: 30px;
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--gold);
  text-shadow: 0 0 20px rgba(251,191,36,0.6);
  animation: combo-pop 0.4s cubic-bezier(0.2,0.8,0.2,1);
  pointer-events: none;
}
@keyframes combo-pop {
  0%   { transform: scale(0.5); opacity: 0; }
  60%  { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

/* Float texts (JS spawned) */
.float-text {
  position: fixed;
  font-size: 1.4rem;
  font-weight: 900;
  pointer-events: none;
  animation: float-up 0.9s ease forwards;
  z-index: 999;
}
@keyframes float-up {
  0%   { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(-70px); opacity: 0; }
}

/* Feedback overlay (redundant, removed in favour of float texts) */
.feedback-overlay { display: none !important; }

.hidden { display: none !important; }

@keyframes fade-in {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}


/* ════════════════════════════════════════════════════════════
   RESULTS SCREEN
   ════════════════════════════════════════════════════════════ */
#screen-results {
  overflow-y: auto;
  align-items: flex-start;
  padding: 40px 16px;
}

.results-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  width: min(640px, 96vw);
  margin: auto;
  padding-bottom: 40px;
}

.results-header { text-align: center; }
.results-rocket {
  font-size: 4rem;
  margin-bottom: 10px;
  animation: bob 3s ease-in-out infinite;
}

#screen-results h1 {
  font-size: 2.8rem;
  font-weight: 900;
  background: linear-gradient(135deg, #c4b5fd, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
#results-subtitle {
  color: var(--muted);
  font-size: 1.05rem;
  margin-top: 6px;
}

.stats-row {
  display: flex;
  gap: 14px;
  width: 100%;
}
.stat-card {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 12px;
  text-align: center;
}
.stat-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 4px;
}
.stat-lbl {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Weak spots */
.weak-section {
  width: 100%;
  background: rgba(248,113,113,0.06);
  border: 1px solid rgba(248,113,113,0.3);
  border-radius: 18px;
  padding: 24px 28px;
}
.weak-section .section-title {
  color: var(--red);
  margin-bottom: 16px;
}
.weak-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.weak-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 16px;
  background: rgba(0,0,0,0.25);
  border-radius: 10px;
}
.weak-fact {
  font-size: 1.2rem;
  font-weight: 800;
  min-width: 100px;
}
.weak-bar-wrap {
  flex: 1;
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 99px;
  overflow: hidden;
}
.weak-bar-fill {
  height: 100%;
  background: var(--red);
  border-radius: 99px;
}
.weak-miss-count {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--red);
  min-width: 60px;
  text-align: right;
}

.results-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  align-items: center;
}
.results-actions .btn-launch { max-width: 320px; }