/* ============================================================
   FlipBook Pro — Share Modal Enhancements
   CSS-only additions for improved share/embed UX.
   ============================================================ */

/* ──────────────────────────────────────────
   1. Modal Enter/Exit Spring Animation
   ────────────────────────────────────────── */

.modal-backdrop.open .modal-box {
  animation: shareModalIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.modal-backdrop:not(.open) .modal-box {
  animation: shareModalOut 0.22s var(--ease-smooth) both;
}

@keyframes shareModalIn {
  from {
    opacity: 0;
    transform: scale(0.88) translateY(16px);
    filter: blur(4px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
    filter: blur(0);
  }
}

@keyframes shareModalOut {
  from {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  to {
    opacity: 0;
    transform: scale(0.95) translateY(6px);
  }
}

/* Staggered content reveal inside modal */
.modal-backdrop.open .modal-section:nth-child(1) { animation: shareContentReveal 0.35s 0.06s both; }
.modal-backdrop.open .modal-section:nth-child(2) { animation: shareContentReveal 0.35s 0.12s both; }
.modal-backdrop.open .modal-section:nth-child(3) { animation: shareContentReveal 0.35s 0.18s both; }
.modal-backdrop.open .modal-section:nth-child(4) { animation: shareContentReveal 0.35s 0.24s both; }

@keyframes shareContentReveal {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Header reveal */
.modal-backdrop.open .modal-header {
  animation: shareContentReveal 0.3s 0.02s both;
}

/* Tabs reveal */
.modal-backdrop.open .share-tabs {
  animation: shareContentReveal 0.3s 0.04s both;
}


/* ──────────────────────────────────────────
   2. Enhanced Social Buttons — Brand Colors
   ────────────────────────────────────────── */

.social-btn {
  min-height: 72px;
  position: relative;
  overflow: hidden;
}

.social-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.2s;
}


/* ──────────────────────────────────────────
   3. Copy Link Field — Success Animation
   ────────────────────────────────────────── */

.copy-btn.copied {
  animation: shareCopyPulse 0.3s var(--ease-spring);
}

@keyframes shareCopyPulse {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.06); }
  100% { transform: scale(1); }
}


/* ──────────────────────────────────────────
   4. Subtle Glow Behind Modal
   ────────────────────────────────────────── */

.modal-box::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 21px;
  background: linear-gradient(
    135deg,
    rgba(79, 126, 247, 0.12) 0%,
    transparent 50%,
    rgba(79, 126, 247, 0.06) 100%
  );
  z-index: -1;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}

.modal-backdrop.open .modal-box::before {
  opacity: 1;
}


/* ──────────────────────────────────────────
   5. Focus Visible Styles
   ────────────────────────────────────────── */

.share-tab:focus-visible,
.copy-btn:focus-visible,
.embed-size-btn:focus-visible,
.embed-copy-btn:focus-visible,
.qr-download-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}


/* ──────────────────────────────────────────
   6. Responsive Adjustments
   ────────────────────────────────────────── */

@media (max-width: 520px) {
  .social-btn {
    min-height: 60px;
    padding: var(--sp-3) var(--sp-2);
  }

  .social-btn svg {
    width: 22px;
    height: 22px;
  }

  .embed-size-row {
    flex-wrap: wrap;
  }
}


/* ──────────────────────────────────────────
   7. Reduced Motion Support
   ────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .modal-backdrop.open .modal-box {
    animation: none;
    transform: scale(1) translateY(0);
    filter: none;
  }

  .modal-backdrop:not(.open) .modal-box {
    animation: none;
  }

  .modal-backdrop.open .modal-section,
  .modal-backdrop.open .modal-header,
  .modal-backdrop.open .share-tabs {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .share-tab-content.active {
    animation: none;
  }

  .social-btn:hover svg {
    transform: none;
  }

  .copy-btn.copied {
    animation: none;
  }
}


/* ──────────────────────────────────────────
   8. Print — Hide Modal
   ────────────────────────────────────────── */

@media print {
  .modal-backdrop {
    display: none !important;
  }
}