/* =========================
   VEDX QUIZ LOADER THEMES
   ========================= */

/* Base container */
.vq-loading {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 70vh;
  font-family: 'Poppins', sans-serif;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 0 30px rgba(0,0,0,0.05);
}

/* Spinner */
.vq-spinner {
  width: 64px;
  height: 64px;
  border: 6px solid #e0e0e0;
  border-top: 6px solid #1565c0;
  border-radius: 50%;
  animation: vqspin 1s linear infinite;
  margin-bottom: 14px;
}
@keyframes vqspin { from{transform:rotate(0)} to{transform:rotate(360deg)} }

.vq-loading-inner {
  position: relative;
  text-align: center;
  color: #0d47a1;
  z-index: 2;
}

/* -------------------------
   MATH THEME
-------------------------- */
.vq-loader-math {
  background: radial-gradient(circle at center, #f8fbff 0%, #eef3ff 100%);
}

.vq-loader-math .vq-loading-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.vq-loader-math .m-symbol {
  position: absolute;
  font-size: 2rem;
  color: rgba(21,101,192,0.1);
  animation: vqfloat 8s ease-in-out infinite;
  user-select: none;
}

.vq-loader-math .m-symbol.plus     { top: 15%; left: 20%; animation-delay: 0s; }
.vq-loader-math .m-symbol.minus    { top: 35%; left: 75%; animation-delay: 2s; }
.vq-loader-math .m-symbol.multiply { top: 70%; left: 60%; animation-delay: 1s; }
.vq-loader-math .m-symbol.divide   { top: 50%; left: 10%; animation-delay: 3s; }
.vq-loader-math .m-symbol.pi       { top: 25%; left: 55%; animation-delay: 1.5s; }
.vq-loader-math .m-symbol.sigma    { top: 80%; left: 30%; animation-delay: 2.5s; }

@keyframes vqfloat {
  0%,100% { transform: translateY(0) rotate(0deg); opacity: 0.3; }
  50% { transform: translateY(-15px) rotate(15deg); opacity: 0.6; }
}

/* -------------------------
   FUTURE THEMES (examples)
-------------------------- */
.vq-loader-ai {
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  color: #e0f7fa;
}

.vq-loader-classic {
  background: #fff;
  color: #1565c0;
}


.vq-frame {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  padding: 60px 20px;
  text-align: center;
  min-height: 70vh;
}

.vq-frame-inner {
  position: relative;
  z-index: 2;
}

.vq-theme-math {
  background: radial-gradient(circle at center, #f8fbff 0%, #eef3ff 100%);
}

.vq-frame-bg .m-symbol {
  position: absolute;
  font-size: 2rem;
  color: rgba(21,101,192,0.1);
  animation: vqfloat 8s ease-in-out infinite;
}
@keyframes vqfloat {
  0%,100% { transform: translateY(0); opacity: .3; }
  50% { transform: translateY(-10px); opacity: .6; }
}



/* ------------------------------
   PREMIUM INTRO STYLE
------------------------------ */

.vq-intro {
  max-width: 600px;
  margin: 0 auto;
  background: rgba(255,255,255,0.35);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 50px 40px;
  box-shadow: 0 8px 25px rgba(13,71,161,0.08);
  animation: vqFadeUp 0.8s ease both;
}

.vq-intro h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #0d1b3d;
  margin-bottom: 0.6rem;
  letter-spacing: -0.5px;
}

.vq-intro p {
  color: #243b63;
  font-size: 1.05rem;
  line-height: 1.5;
  margin: 8px 0;
}

.vq-intro-text {
  margin-top: 1rem;
  font-style: italic;
  color: #0d47a1;
  font-weight: 500;
}

.vq-start-btn {
  margin-top: 1.8rem;
  background: linear-gradient(135deg, #0d47a1, #1976d2);
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 14px 36px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 6px 15px rgba(21,101,192,0.3);
}

.vq-start-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(21,101,192,0.35);
  background: linear-gradient(135deg, #1565c0, #42a5f5);
}

.vq-start-btn:active {
  transform: translateY(0);
}

/* Fade-up animation */
@keyframes vqFadeUp {
  0% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}
/* ------------------------------
   PREMIUM END SCREEN
------------------------------ */

.vq-end {
  max-width: 600px;
  margin: 80px auto;
  text-align: center;
  background: rgba(255,255,255,0.35);
  backdrop-filter: blur(12px);
  padding: 50px 40px;
  border-radius: 20px;
  box-shadow: 0 8px 25px rgba(13,71,161,0.1);
  color: #0d1b3d;
  animation: vqFadeUp 0.8s ease both;
}

.vq-end h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #0d47a1;
}

.vq-end p {
  font-size: 1.1rem;
  margin: 6px 0;
}

.vq-end strong {
  font-weight: 700;
  color: #0d1b3d;
}

.vq-level {
  margin-top: 10px;
  font-size: 1.2rem;
  font-weight: 600;
}

/* 🔹 Level-based color glow */
.vq-end[data-level="Starter"] { border-top: 6px solid #b0bec5; }
.vq-end[data-level="Challenger"] { border-top: 6px solid #64b5f6; }
.vq-end[data-level="Master"] { border-top: 6px solid #1976d2; }
.vq-end[data-level="Genius"] {
  border-top: 6px solid #ffd600;
  position: relative;
  overflow: hidden;
}
.vq-end[data-level="Genius"]::after {
  content: "✨";
  position: absolute;
  top: -20px; left: 50%;
  transform: translateX(-50%);
  font-size: 2rem;
  animation: sparkle 1.5s infinite ease-in-out;
  color: #ffb300;
}

@keyframes sparkle {
  0%,100% { opacity: 0.2; transform: translate(-50%, 0); }
  50% { opacity: 0.9; transform: translate(-50%, -6px); }
}

/* 🔘 Retry Button */
.vq-restart-btn {
  margin-top: 2rem;
  background: linear-gradient(135deg, #1565c0, #42a5f5);
  color: #fff;
  border: none;
  border-radius: 40px;
  padding: 12px 30px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 6px 15px rgba(21,101,192,0.25);
}
.vq-restart-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(21,101,192,0.3);
}
.vq-restart-btn:active {
  transform: translateY(0);
}

/* Shared fade animation */
@keyframes vqFadeUp {
  0% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}