/* ============================================
   First-Visit Guide Overlay (student page)
   Darkens the screen, circular (blue) spotlight
   always centered on the intro video, Arabic
   call-to-action card following the site's blue
   header design language.
   ============================================ */

.guide-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.guide-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

/* Backdrop: dark fill with a transparency hole that is ALWAYS a perfect
   circle (radial-gradient mask is viewport-proportional, never stretched) */
.guide-cutout {
  position: absolute;
  inset: 0;
  background: rgba(3, 7, 18, 0.82);
  -webkit-mask: radial-gradient(circle var(--guide-r, 120px) at var(--guide-cx, 50%) var(--guide-cy, 50%), transparent 99.2%, #000 100%);
  mask: radial-gradient(circle var(--guide-r, 120px) at var(--guide-cx, 50%) var(--guide-cy, 50%), transparent 99.2%, #000 100%);
}

/* Browsers without CSS mask support: still dark, message still readable */
@supports not ((mask: radial-gradient(circle, #000 0%, #000 100%)) or (-webkit-mask: radial-gradient(circle, #000 0%, #000 100%))) {
  .guide-cutout {
    background: rgba(3, 7, 18, 0.82);
  }
}

/* Pulsing blue ring pinned to the video (re-tracking each frame) */
.guide-ring {
  position: fixed;
  border-radius: 50%;
  border: 3px solid var(--color-primary-light, #3b82f6);
  box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb, 37, 99, 235), 0.35), 0 0 45px rgba(var(--color-primary-rgb, 37, 99, 235), 0.55);
  pointer-events: none;
  z-index: 10000;
  animation: guide-pulse 1.8s ease-in-out infinite;
}

.guide-ring::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: 2px dashed rgba(var(--color-primary-rgb, 37, 99, 235), 0.75);
  border-radius: 50%;
  pointer-events: none;
}

.guide-ring.awaiting {
  display: none;
}

@keyframes guide-pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}

/* Message card — blue header design language */
.guide-card {
  position: relative;
  z-index: 10001;
  max-width: 380px;
  width: calc(100% - 2rem);
  background: var(--bg-primary, #f8fafc);
  color: var(--color-gray-900, #111827);
  border-radius: var(--radius-xl, 16px);
  padding: 1.5rem 1.75rem;
  text-align: center;
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.55);
  border-top: 5px solid var(--color-primary, #2563eb);
}

/* Entrance animation lives on an inner wrapper so it never overrides the
   card's centering transform (translateX(-50%) / translate(-50%, -50%)) */
.guide-card-content {
  animation: guide-card-in 0.45s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes guide-card-in {
  from {
    transform: translateY(22px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.guide-title {
  margin: 0 0 0.5rem;
  font-size: var(--text-lg, 1.125rem);
  font-weight: var(--font-bold, 700);
  color: var(--color-primary-dark, #1d4ed8);
}

.guide-text {
  margin: 0 0 1.25rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-gray-600, #4b5563);
}

.guide-video-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 0.75rem;
  border-radius: 50%;
  background: rgba(var(--color-primary-rgb, 37, 99, 235), 0.12);
  color: var(--color-primary, #2563eb);
  display: flex;
  align-items: center;
  justify-content: center;
}

.guide-cta {
  display: inline-block;
  width: 100%;
  padding: 0.8rem 1rem;
  border: none;
  border-radius: var(--radius-md, 8px);
  background: var(--color-primary, #2563eb);
  color: var(--color-white, #ffffff);
  font-size: 1rem;
  font-weight: var(--font-semibold, 600);
  font-family: inherit;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}

.guide-cta:hover {
  background: var(--color-primary-dark, #1d4ed8);
}

.guide-cta:active {
  transform: scale(0.98);
}

.guide-skip {
  margin-top: 1rem;
  background: none;
  border: none;
  color: var(--color-gray-400, #9ca3af);
  font-size: var(--text-sm, 0.875rem);
  font-family: inherit;
  cursor: pointer;
  transition: color 0.2s ease;
}

.guide-skip:hover {
  color: var(--color-gray-600, #4b5563);
}

@media (max-width: 640px) {
  .guide-card {
    padding: 1.25rem 1.25rem;
  }
}