/* ============================================================
   Secure File Manager – Stylesheet
   ============================================================ */

/* --- Reset base --- */
.sfm-uploader-wrap,
.sfm-downloader-wrap {
  max-width: 720px;
  margin: 0 auto;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #1a1a2e;
}

/* --- Utility --- */
.sfm-hidden { display: none !important; }

/* --- Step container --- */
.sfm-step {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 28px 32px;
  margin-bottom: 24px;
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}

.sfm-step h3 {
  margin: 0 0 18px;
  font-size: 1.25rem;
  font-weight: 700;
  color: #1a1a2e;
}

/* --- Labels & inputs --- */
.sfm-label {
  display: block;
  margin: 14px 0 5px;
  font-size: .85rem;
  font-weight: 600;
  color: #475569;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.sfm-input {
  display: block;
  width: 100%;
  box-sizing: border-box;
  padding: 10px 14px;
  border: 1.5px solid #cbd5e1;
  border-radius: 8px;
  font-size: .95rem;
  background: #f8fafc;
  color: #1a1a2e;
  transition: border-color .2s, box-shadow .2s;
  margin-bottom: 4px;
}
.sfm-input:focus {
  outline: none;
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99,102,241,.15);
  background: #fff;
}

/* --- Buttons --- */
.sfm-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.sfm-btn {
  padding: 10px 22px;
  border: none;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s, background .2s;
}
.sfm-btn:hover  { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(0,0,0,.12); }
.sfm-btn:active { transform: translateY(0);    box-shadow: none; }

.sfm-btn-primary   { background: #6366f1; color: #fff; }
.sfm-btn-primary:hover { background: #4f46e5; }

.sfm-btn-secondary { background: #64748b; color: #fff; }
.sfm-btn-secondary:hover { background: #475569; }

.sfm-btn-success   { background: #22c55e; color: #fff; }
.sfm-btn-success:hover { background: #16a34a; }

.sfm-btn-danger    { background: #ef4444; color: #fff; }
.sfm-btn-danger:hover { background: #dc2626; }

.sfm-btn:disabled  { opacity: .55; cursor: not-allowed; transform: none; box-shadow: none; }

/* --- Progress bar --- */
.sfm-progress-wrap {
  margin-top: 20px;
}

.sfm-progress-bar {
  height: 10px;
  background: #e2e8f0;
  border-radius: 99px;
  overflow: hidden;
}

.sfm-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #6366f1, #8b5cf6);
  border-radius: 99px;
  /* Nessuna transition CSS: la barra è animata direttamente dal loop requestAnimationFrame
     a ~60fps, la transition aggiungerebbe solo latenza visiva indesiderata */
}

.sfm-progress-info {
  display: flex;
  gap: 18px;
  margin-top: 8px;
  font-size: .82rem;
  color: #64748b;
  font-weight: 500;
}

/* --- Field hint --- */
.sfm-field-hint {
  margin: 3px 0 10px;
  font-size: .78rem;
  color: #94a3b8;
  line-height: 1.4;
}

/* --- Status messages --- */
.sfm-status, .sfm-msg {
  margin-top: 10px;
  font-size: .88rem;
  font-weight: 500;
  min-height: 1.2em;
}
.sfm-info    { color: #6366f1; }
.sfm-success { color: #16a34a; }
.sfm-error   { color: #dc2626; }
.sfm-warning { color: #d97706; }

/* ============================================================
   DOWNLOADER
   ============================================================ */
.sfm-downloader-wrap {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 28px 32px;
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.sfm-downloader-wrap h3 {
  margin: 0 0 20px;
  font-size: 1.25rem;
  font-weight: 700;
}

/* Filtro categorie */
.sfm-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.sfm-cat-btn {
  padding: 6px 16px;
  border: 1.5px solid #cbd5e1;
  border-radius: 99px;
  background: #f8fafc;
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  color: #475569;
  transition: all .2s;
}
.sfm-cat-btn:hover,
.sfm-cat-btn.sfm-cat-active {
  background: #6366f1;
  border-color: #6366f1;
  color: #fff;
}

/* File card */
.sfm-file-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sfm-file-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  background: #f8fafc;
  transition: background .2s, box-shadow .2s;
}
.sfm-file-card:hover {
  background: #f1f5f9;
  box-shadow: 0 2px 10px rgba(0,0,0,.07);
}

.sfm-file-icon {
  font-size: 1.8rem;
  line-height: 1;
  flex-shrink: 0;
}

.sfm-file-info {
  flex: 1;
  min-width: 0;
}
.sfm-file-info strong {
  display: block;
  font-size: .95rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sfm-file-meta {
  display: block;
  font-size: .78rem;
  color: #64748b;
  margin-top: 2px;
}

.sfm-dl-btn {
  flex-shrink: 0;
  padding: 8px 16px;
  font-size: .82rem;
}

.sfm-empty {
  text-align: center;
  color: #94a3b8;
  padding: 32px 0;
  font-size: .95rem;
}

/* ============================================================
   MODAL
   ============================================================ */
.sfm-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  backdrop-filter: blur(3px);
}

.sfm-modal-box {
  background: #fff;
  border-radius: 14px;
  padding: 32px 36px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
}

.sfm-modal-box h4 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  font-weight: 700;
}
.sfm-modal-box p {
  margin: 0 0 18px;
  font-size: .88rem;
  color: #64748b;
  word-break: break-all;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 560px) {
  .sfm-step,
  .sfm-downloader-wrap { padding: 20px 16px; }
  
  .sfm-file-card {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 12px !important;
  }
  
  .sfm-file-icon {
    order: 1;
    width: 100%;
    text-align: left;
  }
  
  .sfm-file-info {
    order: 2;
    width: 100% !important;
  }
  
  .sfm-button-group {
    order: 3;
    display: flex !important;
    flex-direction: column !important;
    gap: 8px !important;
    width: 100% !important;
    align-items: stretch !important;
    flex-shrink: 0 !important;
  }
  
  .sfm-dl-btn {
    width: 100% !important;
    text-align: center !important;
    padding: 12px 16px !important;
    flex-shrink: 0 !important;
    order: 1;
  }
  
  .sfm-share-btn {
    width: auto !important;
    min-width: 48px !important;
    padding: 12px 13px !important;
    flex-shrink: 0 !important;
    order: 2;
    align-self: flex-start;
  }
  
  .sfm-modal-box { padding: 24px 18px; margin: 0 12px; }
}

/* ============================================================
   Commento file
   ============================================================ */
.sfm-file-comment {
  display: block;
  font-size: .82rem;
  color: #475569;
  margin-top: 4px;
  font-style: italic;
  line-height: 1.4;
}

/* Textarea commento nell'uploader */
#sfm-comment {
  min-height: 60px;
}

/* Label checkbox no-password */
#sfm-no-password {
  accent-color: #2563eb;
}

/* ============================================================
   Barra di ricerca
   ============================================================ */
.sfm-search-bar {
  margin-bottom: 14px;
}
.sfm-search-bar .sfm-input {
  width: 100%;
  max-width: 480px;
  padding: 10px 16px;
  font-size: .95rem;
}

#sfm-no-results {
  display: none;
  text-align: center;
  color: #64748b;
  padding: 32px 0;
  font-size: .95rem;
}

/* ============================================================
   Pulsante share (🔗) inline con Scarica
   ============================================================ */

/* Button group wrapper - default desktop */
.sfm-button-group {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-shrink: 0;
}

.sfm-share-btn {
  padding: 10px 13px !important;
  font-size: 1rem;
  line-height: 1;
  text-decoration: none;
}

/* ============================================================
   Multi-file upload
   ============================================================ */
#sfm-file-queue {
  margin: 6px 0 12px;
}
#sfm-multi-progress {
  margin-bottom: 8px;
}
#sfm-multi-progress .sfm-progress-bar {
  height: 6px;
  margin-top: 3px;
}

/* ============================================================
   Debug panel
   ============================================================ */
#sfm-debug-panel {
  background: #f8fafc;
}
#sfm-debug-panel summary {
  outline: none;
}
#sfm-debug-content div {
  padding: 2px 0;
  border-bottom: 1px solid #f1f5f9;
}
#sfm-error-log div {
  padding: 2px 0;
  word-break: break-all;
}