/**
 * SimpleGallery WebOS - Towers of Hanoi Puzzle
 * Stylesheet with 3D-styled Pegs, Gradient Disks, Floating Animations & Victory Cards.
 */

.hanoi-app {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  background: var(--window-bg, var(--bg-main, radial-gradient(circle at 50% 25%, #312e81 0%, #1e1b4b 60%, #0f172a 100%)));
  color: var(--text-main, #f8fafc);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  user-select: none;
  overflow: hidden;
  position: relative;
}

/* Header & Controls */
.hanoi-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--header-bg, var(--bg-card, rgba(15, 23, 42, 0.8)));
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color, rgba(129, 140, 248, 0.25));
  gap: 12px;
  z-index: 10;
  flex-wrap: wrap;
}

.hanoi-stats {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.hanoi-stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card, rgba(255, 255, 255, 0.08));
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
  border-radius: 9999px;
  padding: 4px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main, #e2e8f0);
}

.hanoi-stat-pill.highlight {
  background: rgba(99, 102, 241, 0.2);
  border-color: rgba(129, 140, 248, 0.4);
  color: #a5b4fc;
}

.hanoi-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hanoi-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: var(--bg-card, rgba(255, 255, 255, 0.1));
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.15));
  border-radius: 8px;
  color: var(--text-main, #fff);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.hanoi-btn:hover {
  background: var(--border-color-hover, rgba(255, 255, 255, 0.2));
  transform: translateY(-1px);
}

.hanoi-btn.primary {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  border-color: #818cf8;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.hanoi-btn.accent {
  background: linear-gradient(135deg, #ec4899 0%, #d946ef 100%);
  border-color: #f472b6;
  box-shadow: 0 4px 12px rgba(236, 72, 153, 0.35);
}

/* Arena & Towers Platform */
.hanoi-arena {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow: auto;
  position: relative;
}

.hanoi-stage {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  width: 100%;
  max-width: 820px;
  height: 380px;
  background: rgba(30, 41, 59, 0.4);
  backdrop-filter: blur(20px);
  border: 2px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6), 0 0 35px rgba(99, 102, 241, 0.15);
  padding: 20px 20px 45px 20px;
}

/* Base Wooden / Acrylic Bar */
.hanoi-base-bar {
  position: absolute;
  bottom: 18px;
  left: 20px;
  right: 20px;
  height: 22px;
  background: linear-gradient(180deg, #475569 0%, #1e293b 100%);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.5);
}

/* Peg Column */
.hanoi-peg-col {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  width: 30%;
  height: 100%;
  cursor: pointer;
  z-index: 5;
  transition: all 0.2s ease;
  padding-bottom: 2px;
}

.hanoi-peg-col:hover {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 12px;
}

.hanoi-peg-col.source-active {
  background: rgba(99, 102, 241, 0.12);
  border-radius: 12px;
}

.hanoi-peg-col.hint-source {
  animation: pulse-border-src 1s infinite alternate;
}

.hanoi-peg-col.hint-target {
  animation: pulse-border-tgt 1s infinite alternate;
}

@keyframes pulse-border-src {
  0% { box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.4); }
  100% { box-shadow: 0 0 15px 4px rgba(239, 68, 68, 0.8); }
}

@keyframes pulse-border-tgt {
  0% { box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.4); }
  100% { box-shadow: 0 0 15px 4px rgba(34, 197, 94, 0.8); }
}

/* Peg Rod */
.hanoi-peg-pole {
  position: absolute;
  bottom: 0;
  width: 14px;
  height: 250px;
  background: linear-gradient(90deg, #64748b 0%, #cbd5e1 50%, #475569 100%);
  border-radius: 7px 7px 0 0;
  box-shadow: 0 4px 10px rgba(0,0,0,0.5);
  pointer-events: none;
  z-index: 1;
}

/* Peg Label (A, B, C) */
.hanoi-peg-label {
  position: absolute;
  bottom: -32px;
  font-size: 1.1rem;
  font-weight: 800;
  color: #94a3b8;
  letter-spacing: 1px;
}

/* Disk Container */
.hanoi-disks-stack {
  position: relative;
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  width: 100%;
  z-index: 3;
  pointer-events: none;
}

/* Disks */
.hanoi-disk {
  position: relative;
  height: 28px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0,0,0,0.6);
  border: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: 0 4px 12px rgba(0,0,0,0.4), inset 0 2px 4px rgba(255,255,255,0.4);
  margin-top: 2px;
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.2s ease;
  pointer-events: auto;
  cursor: pointer;
}

/* Floating Selected Disk */
.hanoi-disk.selected {
  transform: translateY(-40px) scale(1.06);
  box-shadow: 0 15px 30px rgba(0,0,0,0.6), 0 0 20px rgba(255,255,255,0.8);
  border-color: #fff;
  z-index: 15;
}

/* Disk Gradient Variants */
.disk-1 { width: 35%; background: linear-gradient(135deg, #ec4899, #f43f5e); }
.disk-2 { width: 44%; background: linear-gradient(135deg, #f97316, #fb923c); }
.disk-3 { width: 53%; background: linear-gradient(135deg, #eab308, #facc15); color: #1e293b; text-shadow: none; }
.disk-4 { width: 62%; background: linear-gradient(135deg, #22c55e, #10b981); }
.disk-5 { width: 71%; background: linear-gradient(135deg, #06b6d4, #0ea5e9); }
.disk-6 { width: 80%; background: linear-gradient(135deg, #3b82f6, #6366f1); }
.disk-7 { width: 89%; background: linear-gradient(135deg, #8b5cf6, #a855f7); }
.disk-8 { width: 98%; background: linear-gradient(135deg, #d946ef, #c026d3); }

/* Victory Modal */
.hanoi-modal {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 30;
  animation: fade-in 0.3s ease;
}

.hanoi-card {
  background: rgba(30, 41, 59, 0.95);
  border: 2px solid #818cf8;
  border-radius: 20px;
  padding: 2.5rem 3rem;
  box-shadow: 0 25px 60px rgba(0,0,0,0.8), 0 0 50px rgba(129, 140, 248, 0.3);
  text-align: center;
  max-width: 460px;
}

.hanoi-card-title {
  font-size: 1.8rem;
  font-weight: 800;
  color: #fbbf24;
  margin-bottom: 0.5rem;
}

.hanoi-stars {
  font-size: 2.2rem;
  margin-bottom: 1rem;
  letter-spacing: 6px;
}