body,
html {
  margin: 0;
  padding: 0;
  background-color: #020617;
  font-family: "Segoe UI", system-ui, sans-serif;
}
.game-bg {
  background: radial-gradient(circle at top left, #1e293b 0%, #020617 100%);
}
.zen-navbar {
  background-color: #0f172a;
  border-bottom: 1px solid #1e293b;
  height: 70px;
  z-index: 100;
}
.nav-tab {
  color: #64748b;
  text-decoration: none;
  text-transform: uppercase;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  transition: 0.3s;
  padding: 22px 0;
  border-bottom: 2px solid transparent;
}
.nav-tab:hover,
.nav-tab.active {
  color: #f8fafc;
  border-bottom: 2px solid #3b82f6;
}
.main-wrapper {
  height: calc(100vh - 70px);
}
.app-container {
  background-color: #0f172a;
  border: 1px solid #1e293b;
  min-height: 600px;
}
.control-panel {
  background-color: #1e293b;
  border-left: 2px solid #0f172a;
}
.move-log {
  background-color: #0f172a;
  border: 1px inset #334155;
}
.stat-card {
  background-color: #1e293b;
  border: 1px solid #334155;
  transition: 0.3s;
}
.stat-card:hover {
  transform: translateY(-5px);
  border-color: #3b82f6;
}

/* BOARD COLORS */
.white-1e1d7 {
  background-color: #475569 !important;
  color: #1e293b !important;
}
.black-3c85d {
  background-color: #1e293b !important;
  color: #475569 !important;
}

/* VISION DRILL FEEDBACK */
.vision-correct {
  background-color: rgba(34, 197, 94, 0.7) !important;
  box-shadow: inset 0 0 15px #22c55e !important;
}
.vision-wrong {
  background-color: rgba(239, 68, 68, 0.7) !important;
  box-shadow: inset 0 0 15px #ef4444 !important;
}

/* Custom Input Styling for Register/Login */
.form-control:focus {
    background-color: #020617 !important;
    border-color: #3b82f6 !important;
    box-shadow: 0 0 8px rgba(59, 130, 246, 0.5) !important;
}

.form-control::placeholder {
    color: rgba(255, 255, 255, 0.2) !important;
}

/* Logout Button Styling */
.btn-outline-danger {
    border-color: rgba(220, 38, 38, 0.5);
    color: rgba(220, 38, 38, 0.8);
    transition: 0.3s ease;
}

.btn-outline-danger:hover {
    background-color: #dc2626;
    border-color: #dc2626;
    color: white;
    box-shadow: 0 0 15px rgba(220, 38, 38, 0.4);
    transform: translateY(-2px);
}

/* ADD THIS TO THE VERY BOTTOM OF YOUR CSS FILE */

/* Custom Input Styling for Register/Login */
.form-control:focus {
    background-color: #020617 !important;
    border-color: #3b82f6 !important;
    box-shadow: 0 0 8px rgba(59, 130, 246, 0.5) !important;
}

.form-control::placeholder {
    color: rgba(255, 255, 255, 0.2) !important;
}

/* Logout Button Styling */
.btn-outline-danger {
    border-color: rgba(220, 38, 38, 0.5);
    color: rgba(220, 38, 38, 0.8);
    transition: 0.3s ease;
}

.btn-outline-danger:hover {
    background-color: #dc2626;
    border-color: #dc2626;
    color: white;
    box-shadow: 0 0 15px rgba(220, 38, 38, 0.4);
    transform: translateY(-2px);
}

/* CHECK HIGHLIGHT EFFECT */
.in-check {
    background-color: rgba(220, 38, 38, 0.8) !important;
    box-shadow: inset 0 0 25px #ef4444 !important;
}