:root {
  --sqd-bg-color: #0f172a;
  --sqd-card-bg: #1e293b;
  --sqd-accent-color: #38bdf8;
  --sqd-accent-hover: #0284c7;
  --sqd-boy-color: #3b82f6;
  --sqd-girl-color: #ec4899;
  --sqd-text-main: #f8fafc;
  --sqd-text-muted: #94a3b8;
  --sqd-border-color: #334155;
}

.sqd-wrapper {
  box-sizing: border-box;
  color: var(--sqd-text-main);
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  padding: 10px;
}

.sqd-wrapper *, .sqd-wrapper *::before, .sqd-wrapper *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

.sqd-container {
  width: 100%;
  max-width: 500px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Controls & Filters */
.sqd-controls-card {
  background: var(--sqd-card-bg);
  border: 1px solid var(--sqd-border-color);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sqd-filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sqd-filter-group label {
  font-size: 0.8rem;
  color: var(--sqd-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.sqd-wrapper select {
  width: 100%;
  padding: 10px 12px;
  background: #0f172a;
  border: 1px solid var(--sqd-border-color);
  color: var(--sqd-text-main);
  border-radius: 8px;
  font-size: 0.95rem;
  outline: none;
  cursor: pointer;
}

.sqd-wrapper select:focus {
  border-color: var(--sqd-accent-color);
}

.sqd-btn-generate {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: #ffffff;
  border: none;
  border-radius: 12px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.sqd-btn-generate:active {
  transform: scale(0.98);
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.2);
}

/* Main Display Card */
.sqd-display-card {
  background: var(--sqd-card-bg);
  border: 1px solid var(--sqd-border-color);
  border-radius: 16px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  position: relative;
}

.sqd-info-header {
  width: 100%;
  text-align: center;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--sqd-border-color);
  padding-bottom: 10px;
}

.sqd-formation-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--sqd-text-main);
  margin-bottom: 4px;
}

.sqd-arrangement-title {
  font-size: 0.95rem;
  color: var(--sqd-accent-color);
  font-weight: 600;
}

.sqd-level-badge {
  display: inline-block;
  margin-top: 6px;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(56, 189, 248, 0.15);
  color: var(--sqd-accent-color);
}

/* SVG Display Area */
.sqd-svg-container {
  width: 100%;
  max-width: 380px;
  height: 380px;
  background: #090d16;
  border-radius: 12px;
  border: 1px solid #1e293b;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 10px 0;
}

.sqd-svg-container svg {
  width: 100%;
  height: 100%;
}

/* Legend */
.sqd-legend {
  display: flex;
  justify-content: center;
  gap: 16px;
  width: 100%;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--sqd-border-color);
  font-size: 0.8rem;
  color: var(--sqd-text-muted);
}

.sqd-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.sqd-legend-box {
  width: 12px;
  height: 12px;
  border-radius: 2px;
}

.sqd-boy-box { background: var(--sqd-boy-color); }
.sqd-girl-box { background: var(--sqd-girl-color); border-radius: 50%; }

/* Animation */
.sqd-pulse {
  animation: sqd-pulse-anim 0.25s ease-in-out;
}

@keyframes sqd-pulse-anim {
  0% { transform: scale(1); }
  50% { transform: scale(0.97); }
  100% { transform: scale(1); }
}