/*
 * Sur mobile, aucun élément de cette page ne doit agrandir la largeur du document.
 * Les décorations du thème peuvent dépasser visuellement, mais elles ne doivent
 * jamais créer de défilement horizontal.
 */
html,
body {
  max-width:100%;
  overflow-x:hidden;
}

@supports (overflow-x:clip) {
  html,
  body {
    overflow-x:clip;
  }
}

.collage-page,
.collage-page *,
.collage-page *::before,
.collage-page *::after {
  box-sizing:border-box;
}

.collage-page {
  width:100%;
  max-width:100%;
  overflow-x:hidden;
}

@supports (overflow-x:clip) {
  .collage-page {
    overflow-x:clip;
  }
}

.collage-page img,
.collage-page canvas,
.collage-page svg {
  max-width:100%;
}

.collage-photo-panel,
.collage-settings,
.collage-preview-section,
.collage-setting-block,
.collage-setting-row,
.collage-preview-wrap {
  min-width:0;
  max-width:100%;
}

.collage-page [hidden] { display:none !important; }

.collage-dropzone {
  position:relative;
  overflow:hidden;
}

.collage-dropzone > input[type="file"] {
  position:absolute !important;
  inset:0 !important;
  z-index:3 !important;
  display:block !important;
  width:100% !important;
  height:100% !important;
  margin:0 !important;
  padding:0 !important;
  opacity:0 !important;
  cursor:pointer !important;
  border:0 !important;
  font-size:0 !important;
}

.collage-dropzone > div {
  position:relative;
  z-index:1;
  pointer-events:none;
}

.collage-dropzone.dragover {
  transform:translateY(-1px);
}

.collage-photo-panel,
.collage-settings,
.collage-preview-section {
  margin-top:18px;
  padding:18px;
  border:1px solid rgba(35,47,62,.10);
  border-radius:20px;
  background:#fff;
}

.collage-panel-head,
.collage-preview-head {
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:14px;
  margin-bottom:14px;
}

.collage-panel-head > div,
.collage-preview-head > div {
  display:grid;
  gap:3px;
}

.collage-panel-head small,
.collage-preview-head small {
  color:#68768a;
}

.small-action {
  appearance:none;
  border:1px solid rgba(63,111,242,.18);
  border-radius:12px;
  background:#eef3ff;
  color:#355fc4;
  padding:9px 12px;
  font:inherit;
  font-weight:800;
  cursor:pointer;
}

.small-action:hover {
  background:#e4ecff;
}

.collage-thumbs {
  display:grid;
  grid-template-columns:repeat(6, minmax(0,1fr));
  gap:10px;
}

.collage-thumb {
  position:relative;
  overflow:hidden;
  aspect-ratio:1 / 1;
  border-radius:14px;
  background:#eef1f5;
  border:1px solid rgba(35,47,62,.08);
}

.collage-thumb img,
.collage-thumb canvas {
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}

.collage-thumb button {
  position:absolute;
  top:6px;
  right:6px;
  width:28px;
  height:28px;
  display:grid;
  place-items:center;
  padding:0;
  border:0;
  border-radius:50%;
  background:rgba(20,25,32,.78);
  color:#fff;
  font-size:18px;
  line-height:1;
  cursor:pointer;
}

.collage-thumb .thumb-number {
  position:absolute;
  left:6px;
  bottom:6px;
  min-width:25px;
  height:25px;
  display:grid;
  place-items:center;
  padding:0 6px;
  border-radius:999px;
  background:rgba(255,255,255,.88);
  color:#232f3e;
  font-size:.75rem;
  font-weight:900;
}

.collage-note {
  margin:12px 0 0;
  padding:10px 12px;
  border-radius:12px;
  background:#fff7df;
  color:#79601c;
  font-size:.92rem;
}

.collage-settings {
  display:grid;
  gap:18px;
}

.collage-setting-block {
  display:grid;
  gap:9px;
}

.collage-choice-grid {
  grid-template-columns:repeat(2, minmax(0,1fr));
}

.collage-setting-row {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}

.color-options {
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}

.color-chip {
  position:relative;
  cursor:pointer;
}

.color-chip input {
  position:absolute;
  opacity:0;
  pointer-events:none;
}

.color-chip span {
  display:block;
  width:38px;
  height:38px;
  border-radius:50%;
  background:var(--swatch);
  border:2px solid rgba(35,47,62,.14);
  box-shadow:0 1px 3px rgba(35,47,62,.08);
}

.color-chip input:checked + span {
  outline:3px solid rgba(63,111,242,.25);
  border-color:#3f6ff2;
}

.collage-preview-wrap {
  display:flex;
  justify-content:center;
  align-items:center;
  min-height:320px;
  padding:18px;
  border-radius:18px;
  background:#eef2f7;
  overflow:hidden;
}

#previewCanvas {
  display:block;
  width:auto;
  height:auto;
  max-width:100%;
  max-height:680px;
  background:#fff;
  box-shadow:0 8px 30px rgba(35,47,62,.15);
}

.collage-actions {
  margin-top:16px;
  justify-content:flex-start;
  flex-wrap:wrap;
}

.collage-status {
  margin-top:12px;
}

@media (max-width:780px) {
  .collage-thumbs {
    grid-template-columns:repeat(4, minmax(0,1fr));
  }

  .collage-setting-row {
    grid-template-columns:1fr;
  }

  .collage-preview-wrap {
    min-height:260px;
    padding:12px;
  }

  #previewCanvas {
    max-height:560px;
  }
}

/* Progression d'export : <dialog> natif pour un centrage fiable sur mobile. */
.collage-export-dialog {
  position:fixed;
  inset:0;
  box-sizing:border-box;
  width:min(360px, 90%);
  max-width:90%;
  margin:auto;
  padding:0;
  border:0;
  border-radius:22px;
  background:transparent;
  color:#232f3e;
  overflow:visible;
}

.collage-export-dialog::backdrop {
  background:rgba(35,47,62,.48);
  backdrop-filter:blur(2px);
}

.collage-export-box {
  box-sizing:border-box;
  width:100%;
  padding:24px 22px 20px;
  border-radius:22px;
  background:#fff;
  color:#232f3e;
  text-align:center;
  box-shadow:0 18px 60px rgba(20,28,40,.28);
}

.collage-export-icon {
  margin-bottom:8px;
  font-size:38px;
  line-height:1;
}

.collage-export-box > strong {
  display:block;
  font-size:1.05rem;
}

.collage-export-track {
  height:9px;
  margin:18px 0 10px;
  overflow:hidden;
  border-radius:999px;
  background:#e7ecf3;
}

.collage-export-track span {
  display:block;
  width:0%;
  height:100%;
  border-radius:inherit;
  background:linear-gradient(90deg,#6f8ff3,#9b76d9);
  transition:width .22s ease;
}

.collage-export-box small {
  display:block;
  min-height:2.8em;
  color:#68768a;
  line-height:1.4;
}

@media (max-width:520px) {
  .collage-photo-panel,
  .collage-settings,
  .collage-preview-section {
    padding:14px;
  }

  .collage-panel-head,
  .collage-preview-head {
    align-items:stretch;
    flex-direction:column;
  }

  .small-action {
    width:100%;
  }

  .collage-thumbs {
    grid-template-columns:repeat(3, minmax(0,1fr));
    gap:8px;
  }

  .collage-choice-grid {
    grid-template-columns:1fr;
  }

  .collage-actions {
    display:grid;
    grid-template-columns:1fr;
  }

  .collage-actions button {
    width:100%;
  }
}