/* ============================================================
   screens.css — welcome, level select, instructions,
                 level complete, results
   ============================================================ */

/* ── Welcome ────────────────────────────────────────────────── */
#screen-welcome {
  position: relative;
  overflow: hidden;
}

.welcome-bg-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,255,136,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 100%, rgba(0,100,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.welcome-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  width: 100%;
  max-width: 500px;
  text-align: center;
}

.logo-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  font-size: 4rem;
  filter: drop-shadow(0 0 20px rgba(0,255,136,0.5));
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

.game-title {
  font-size: clamp(2.8rem, 8vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, #00FF88 0%, #00CCFF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.game-subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 500;
}

.welcome-description {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 380px;
}

.name-entry-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-card);
}

.name-label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.name-input {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 1.1rem;
  padding: 12px 16px;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.name-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-dim);
}

.name-input::placeholder {
  color: var(--color-text-muted);
}

/* ── Level Select ───────────────────────────────────────────── */
.level-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  max-width: 600px;
}

.level-card {
  background: var(--color-bg-card);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.level-card--unlocked {
  cursor: pointer;
}

.level-card--unlocked:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.level-card--locked {
  opacity: 0.45;
}

.level-card-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.level-card-body {
  flex: 1;
  text-align: left;
}

.level-card-name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.level-card-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.level-card-lock {
  font-size: 1.4rem;
  flex-shrink: 0;
}

.level-card-btn {
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
}

/* ── Level Instructions ─────────────────────────────────────── */
.instructions-icon {
  font-size: 3.5rem;
  margin-bottom: -8px;
}

.instructions-body {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.instructions-scoring {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.scoring-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
}

.scoring-row .scoring-label {
  color: var(--color-text-muted);
}

.scoring-row .scoring-value {
  font-weight: 700;
}

.scoring-value--positive { color: var(--color-accent); }
.scoring-value--negative { color: var(--color-danger); }

/* ── Level Complete ─────────────────────────────────────────── */
.level-complete-icon {
  font-size: 4rem;
  animation: pop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes pop {
  from { transform: scale(0); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

.lc-level-name {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-top: -16px;
}

.lc-stats {
  display: flex;
  gap: 24px;
  width: 100%;
  justify-content: center;
}

.lc-stat {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.lc-stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.lc-stat-value {
  font-size: 2rem;
  font-weight: 800;
}

.lc-unlock-msg {
  background: var(--color-accent-dim);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.95rem;
  animation: slide-in-up 0.4s ease;
}

@keyframes slide-in-up {
  from { transform: translateY(12px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

/* ── Final Results ──────────────────────────────────────────── */
#screen-results {
  overflow-y: auto;
  justify-content: center;
  align-items: center;
}

.results-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
  padding: 40px 24px;
  width: 100%;
  max-width: 480px;
}

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

.results-badge {
  font-size: 4rem;
  animation: pop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s both;
}

.results-score-display {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
}

.results-score-num {
  color: var(--color-accent);
}

.results-score-max {
  color: var(--color-text-muted);
  font-size: 1.5rem;
}

.results-profile-label {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-top: -8px;
}

.results-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  width: 100%;
  max-width: 380px;
}

.results-stat {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.results-stat-label {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1.3;
}

.results-stat-val {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-accent);
}

/* ── Leaderboard ────────────────────────────────────────────── */
.leaderboard-title {
  font-size: 1.4rem;
  font-weight: 800;
}

.leaderboard-rank-msg {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 8px 16px;
  color: var(--color-accent);
  font-weight: 600;
}

.leaderboard-list {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.leaderboard-loading {
  color: var(--color-text-muted);
  text-align: center;
  padding: 24px 0;
}

.lb-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.9rem;
}

.lb-row--current {
  border-color: var(--color-accent);
  background: var(--color-accent-dim);
}

.lb-rank {
  width: 28px;
  font-weight: 800;
  color: var(--color-text-muted);
  text-align: center;
}

.lb-row--current .lb-rank { color: var(--color-accent); }

.lb-name {
  flex: 1;
  font-weight: 500;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lb-score {
  font-weight: 700;
  color: var(--color-accent);
}

.lb-divider {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  padding: 4px 0;
}

/* ── Leaderboard modal ──────────────────────────────────────── */
.lb-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fade-in-fast 0.2s ease;
}

.lb-modal-inner {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  width: 100%;
  max-width: 420px;
  max-height: 80vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.lb-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lb-modal-close {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 1rem;
  width: 32px;
  height: 32px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition), color var(--transition);
}

.lb-modal-close:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 640px) {
  .lc-stats {
    flex-direction: column;
    gap: 12px;
    align-items: center;
  }
}