/* Student Resource — booklet spread viewer */

.student-resource-section {
  padding-top: 40px;
  padding-bottom: 56px;
}

.sr-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Gate form (before booklet) */
.student-resource-gate {
  max-width: 480px;
  margin: 0 auto;
  background: #fff;
  padding: 28px 32px 32px;
  border-radius: 12px;
  border: 1px solid #e3e9f3;
  box-shadow: 0 10px 28px rgba(12, 47, 99, 0.08);
}

.student-resource-gate__title {
  font-size: clamp(22px, 3vw, 28px);
  color: #0c2f63;
  margin: 0 0 8px;
}

.student-resource-gate__lead {
  color: #5a6578;
  margin: 0 0 20px;
  line-height: 1.5;
}

.student-resource-gate__errors {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b91c1c;
  padding: 12px 14px;
  border-radius: 8px;
  margin-bottom: 18px;
  font-size: 14px;
}

.student-resource-gate__errors p {
  margin: 0;
}

.student-resource-gate__notice {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
  padding: 12px 14px;
  border-radius: 8px;
  margin-bottom: 18px;
  font-size: 14px;
}

.student-resource-gate__otp-actions {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  align-items: center;
  justify-content: center;
}

.student-resource-gate__inline-form {
  display: inline;
  margin: 0;
}

.student-resource-gate .btn-link-like {
  background: none;
  border: none;
  color: #0c4a6e;
  text-decoration: underline;
  cursor: pointer;
  font-size: 14px;
  padding: 0;
}

.student-resource-gate .btn-link-like:hover {
  color: #0369a1;
}

.student-resource-otp-input {
  letter-spacing: 0.2em;
  font-size: 1.25rem;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.student-resource-gate__form .form-row {
  margin-bottom: 16px;
}

.student-resource-gate__form label {
  display: block;
  font-weight: 600;
  color: #334155;
  margin-bottom: 6px;
  font-size: 14px;
}

.student-resource-gate__form .req {
  color: #d61f3a;
}

.student-resource-gate__sublabel {
  display: block;
  font-weight: 600;
  color: #334155;
  margin-bottom: 6px;
  font-size: 14px;
}

.student-resource-phone-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: stretch;
}

.student-resource-phone-cc {
  flex: 0 1 min(100%, 220px);
  min-width: 0;
}

.student-resource-phone-num {
  flex: 1 1 160px;
  min-width: 0;
}

.sr-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.student-resource-gate__form input[type="text"],
.student-resource-gate__form input[type="email"],
.student-resource-gate__form input[type="tel"],
.student-resource-gate__form select {
  width: 100%;
  max-width: 100%;
  padding: 10px 12px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-size: 15px;
  box-sizing: border-box;
}

.student-resource-gate__submit {
  margin-top: 8px;
  width: 100%;
  text-align: center;
  cursor: pointer;
}

.student-resource-empty {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.student-resource-viewer {
  max-width: 1100px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid #e3e9f3;
  border-radius: 12px;
  padding: 16px 16px 22px;
  box-shadow: 0 10px 28px rgba(12, 47, 99, 0.08);
}

.student-resource-counter-wrap {
  text-align: center;
  margin-bottom: 12px;
  min-height: 1.4em;
}

.student-resource-counter {
  font-weight: 600;
  color: #0c2f63;
}

.student-resource-stage-wrap {
  position: relative;
  padding: 0 52px;
}

.student-resource-fab {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 4;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 0;
  background: rgba(12, 47, 99, 0.88);
  color: #fff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: 0 6px 18px rgba(12, 47, 99, 0.25);
  transition: background 0.2s ease, opacity 0.2s ease;
  padding: 0;
  margin: 0;
}

.student-resource-fab:hover:not(:disabled) {
  background: #d61f3a;
}

.student-resource-fab:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.student-resource-fab--prev {
  left: 0;
}

.student-resource-fab--next {
  right: 0;
}

.student-resource-stage {
  background: #eef2f7;
  border-radius: 10px;
  padding: 14px;
  overflow: auto;
  perspective: 1400px;
}

.student-resource-book {
  transform-origin: center center;
  transform-style: preserve-3d;
  transition: transform 0.38s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.32s ease;
  will-change: transform, opacity;
}

.student-resource-book.is-flipping-out-next {
  transform: rotateY(-32deg) translateX(-4%);
  opacity: 0.22;
}

.student-resource-book.is-flipping-out-prev {
  transform: rotateY(32deg) translateX(4%);
  opacity: 0.22;
}

.student-resource-book.is-flipping-in-next {
  animation: srBookInNext 0.52s cubic-bezier(0.34, 1.15, 0.64, 1) forwards;
}

.student-resource-book.is-flipping-in-prev {
  animation: srBookInPrev 0.52s cubic-bezier(0.34, 1.15, 0.64, 1) forwards;
}

@keyframes srBookInNext {
  from {
    transform: rotateY(26deg) translateX(5%) scale(0.97);
    opacity: 0.28;
  }
  to {
    transform: none;
    opacity: 1;
  }
}

@keyframes srBookInPrev {
  from {
    transform: rotateY(-26deg) translateX(-5%) scale(0.97);
    opacity: 0.28;
  }
  to {
    transform: none;
    opacity: 1;
  }
}

.student-resource-spread {
  display: flex;
  flex-wrap: nowrap;
  gap: 14px;
  justify-content: center;
  align-items: flex-start;
}

.student-resource-canvas {
  max-width: 100%;
  height: auto;
  background: #fff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
  border-radius: 6px;
}

.student-resource-spread--img .student-resource-imgcell {
  flex: 1 1 45%;
  min-width: 200px;
  max-width: 520px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

.student-resource-spread--img img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: top;
}

@media (max-width: 560px) {
  .student-resource-stage-wrap {
    padding: 0 44px;
  }

  .student-resource-fab {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }
}

@media (max-width: 720px) {
  .student-resource-spread {
    flex-direction: column;
    align-items: center;
  }

  .student-resource-spread--img .student-resource-imgcell {
    max-width: 100%;
  }
}