diff --git a/app/__init__.py b/app/__init__.py
index 7d507cb..2e6d109 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -57,6 +57,11 @@ def create_app():
                     db.session.execute(db.text("ALTER TABLE display ADD COLUMN description VARCHAR(200)"))
                     db.session.commit()
 
+                # Displays: optional transition between slides (none|fade|slide)
+                if "transition" not in display_cols:
+                    db.session.execute(db.text("ALTER TABLE display ADD COLUMN transition VARCHAR(20)"))
+                    db.session.commit()
+
                 # Companies: optional per-company storage quota
                 company_cols = [
                     r[1] for r in db.session.execute(db.text("PRAGMA table_info(company)")).fetchall()
@@ -128,6 +133,22 @@ def create_app():
                         )
                     )
                     db.session.commit()
+
+                # Playlists: schedule + priority flags
+                playlist_cols = [
+                    r[1] for r in db.session.execute(db.text("PRAGMA table_info(playlist)")).fetchall()
+                ]
+                if "schedule_start" not in playlist_cols:
+                    db.session.execute(db.text("ALTER TABLE playlist ADD COLUMN schedule_start DATETIME"))
+                    db.session.commit()
+                if "schedule_end" not in playlist_cols:
+                    db.session.execute(db.text("ALTER TABLE playlist ADD COLUMN schedule_end DATETIME"))
+                    db.session.commit()
+                if "is_priority" not in playlist_cols:
+                    db.session.execute(
+                        db.text("ALTER TABLE playlist ADD COLUMN is_priority BOOLEAN NOT NULL DEFAULT 0")
+                    )
+                    db.session.commit()
         except Exception:
             db.session.rollback()
 
diff --git a/app/models.py b/app/models.py
index caf7fe1..f6c946a 100644
--- a/app/models.py
+++ b/app/models.py
@@ -49,6 +49,18 @@ class Playlist(db.Model):
     id = db.Column(db.Integer, primary_key=True)
     company_id = db.Column(db.Integer, db.ForeignKey("company.id"), nullable=False)
     name = db.Column(db.String(120), nullable=False)
+
+    # Optional schedule window in UTC.
+    # - If both are NULL: playlist is always active.
+    # - If start is set: playlist is active from start onward.
+    # - If end is set: playlist is active until end.
+    schedule_start = db.Column(db.DateTime, nullable=True)
+    schedule_end = db.Column(db.DateTime, nullable=True)
+
+    # If true, this playlist's items take precedence over non-priority playlists
+    # when multiple playlists are assigned to a display.
+    is_priority = db.Column(db.Boolean, default=False, nullable=False)
+
     created_at = db.Column(db.DateTime, default=datetime.utcnow, nullable=False)
 
     company = db.relationship("Company", back_populates="playlists")
@@ -88,6 +100,8 @@ class Display(db.Model):
     name = db.Column(db.String(120), nullable=False)
     # Optional short description (e.g. "entrance", "office")
     description = db.Column(db.String(200), nullable=True)
+    # Transition animation between slides: none|fade|slide
+    transition = db.Column(db.String(20), nullable=True)
     token = db.Column(db.String(64), unique=True, nullable=False, default=lambda: uuid.uuid4().hex)
 
     assigned_playlist_id = db.Column(db.Integer, db.ForeignKey("playlist.id"), nullable=True)
diff --git a/app/routes/api.py b/app/routes/api.py
index 2394cc7..a0a2703 100644
--- a/app/routes/api.py
+++ b/app/routes/api.py
@@ -15,6 +15,16 @@ MAX_ACTIVE_SESSIONS_PER_DISPLAY = 3
 SESSION_TTL_SECONDS = 90
 
 
+def _is_playlist_active_now(p: Playlist, now_utc: datetime) -> bool:
+    """Return True if playlist is active based on its optional schedule window."""
+
+    if p.schedule_start and now_utc < p.schedule_start:
+        return False
+    if p.schedule_end and now_utc > p.schedule_end:
+        return False
+    return True
+
+
 def _enforce_and_touch_display_session(display: Display, sid: str | None):
     """Enforce concurrent display viewer limit and touch last_seen.
 
@@ -103,6 +113,18 @@ def _playlist_signature(display: Display) -> tuple[int | None, str]:
         raw = "no-playlist"
         return None, hashlib.sha1(raw.encode("utf-8")).hexdigest()
 
+    # Apply scheduling + priority rule so a schedule change triggers a player refresh.
+    playlists = Playlist.query.filter(Playlist.id.in_(active_ids)).all()
+    now_utc = datetime.utcnow()
+    scheduled = [p for p in playlists if _is_playlist_active_now(p, now_utc)]
+    if any(p.is_priority for p in scheduled):
+        scheduled = [p for p in scheduled if p.is_priority]
+    active_ids = [x for x in active_ids if any(p.id == x for p in scheduled)]
+
+    if not active_ids:
+        raw = "no-active-playlist"
+        return None, hashlib.sha1(raw.encode("utf-8")).hexdigest()
+
     # Pull items in a stable order so reordering affects signature.
     if use_mapping:
         items = (
@@ -174,11 +196,30 @@ def display_playlist(token: str):
         use_mapping = False
 
     if not active_ids:
-        return jsonify({"display": display.name, "playlists": [], "items": []})
+        return jsonify(
+            {
+                "display": display.name,
+                "transition": display.transition or "none",
+                "playlists": [],
+                "items": [],
+            }
+        )
 
     playlists = Playlist.query.filter(Playlist.id.in_(active_ids)).all()
-    pl_by_id = {p.id: p for p in playlists}
-    ordered_playlists = [pl_by_id[x] for x in active_ids if x in pl_by_id]
+
+    # Filter playlists by schedule
+    now_utc = datetime.utcnow()
+    scheduled = [p for p in playlists if _is_playlist_active_now(p, now_utc)]
+
+    # Priority rule:
+    # If any active (scheduled) playlist is marked priority, only play priority playlists.
+    any_priority = any(p.is_priority for p in scheduled)
+    if any_priority:
+        scheduled = [p for p in scheduled if p.is_priority]
+
+    pl_by_id = {p.id: p for p in scheduled}
+    scheduled_ids = [x for x in active_ids if x in pl_by_id]
+    ordered_playlists = [pl_by_id[x] for x in scheduled_ids]
 
     # Merge items across active playlists.
     if use_mapping:
@@ -186,17 +227,21 @@ def display_playlist(token: str):
             PlaylistItem.query.join(DisplayPlaylist, DisplayPlaylist.playlist_id == PlaylistItem.playlist_id)
             .filter(
                 DisplayPlaylist.display_id == display.id,
-                PlaylistItem.playlist_id.in_(active_ids),
+                PlaylistItem.playlist_id.in_(scheduled_ids),
             )
             .order_by(DisplayPlaylist.position.asc(), PlaylistItem.position.asc())
             .all()
         )
     else:
-        merged = (
-            PlaylistItem.query.filter(PlaylistItem.playlist_id == active_ids[0])
-            .order_by(PlaylistItem.position.asc())
-            .all()
-        )
+        # single-playlist fallback; apply schedule filter too.
+        if scheduled_ids:
+            merged = (
+                PlaylistItem.query.filter(PlaylistItem.playlist_id == scheduled_ids[0])
+                .order_by(PlaylistItem.position.asc())
+                .all()
+            )
+        else:
+            merged = []
 
     items = []
     for item in merged:
@@ -217,6 +262,7 @@ def display_playlist(token: str):
     return jsonify(
         {
             "display": display.name,
+            "transition": display.transition or "none",
             "playlists": [{"id": p.id, "name": p.name} for p in ordered_playlists],
             "items": items,
         }
diff --git a/app/routes/company.py b/app/routes/company.py
index cc50e99..c94a3f3 100644
--- a/app/routes/company.py
+++ b/app/routes/company.py
@@ -178,6 +178,39 @@ def _try_delete_upload(file_path: str | None, upload_root: str):
 bp = Blueprint("company", __name__, url_prefix="/company")
 
 
+def _parse_schedule_local_to_utc(*, date_str: str | None, time_str: str | None) -> datetime | None:
+    """Parse local date+time form inputs into a naive UTC datetime.
+
+    Inputs come from <input type="date"> and <input type="time">.
+    We interpret them as *local* time of the server.
+
+    Note: this project currently does not store per-company timezone; in most deployments
+    server timezone matches users. If you need per-company timezone later, we can extend
+    this function.
+    """
+
+    d = (date_str or "").strip()
+    t = (time_str or "").strip()
+    if not d and not t:
+        return None
+    if not d or not t:
+        # Require both parts for clarity
+        raise ValueError("Both date and time are required")
+
+    # Basic parsing: YYYY-MM-DD and HH:MM
+    try:
+        year, month, day = [int(x) for x in d.split("-")]
+        hh, mm = [int(x) for x in t.split(":")[:2]]
+    except Exception:
+        raise ValueError("Invalid date/time")
+
+    # Interpret as local time, convert to UTC naive
+    local_dt = datetime(year, month, day, hh, mm)
+    # local_dt.timestamp() uses local timezone when naive.
+    utc_ts = local_dt.timestamp()
+    return datetime.utcfromtimestamp(utc_ts)
+
+
 def company_user_required():
     if not current_user.is_authenticated:
         abort(403)
@@ -347,6 +380,7 @@ def dashboard():
     return render_template(
         "company/dashboard.html",
         playlists=playlists,
+        now_utc=datetime.utcnow(),
         playlists_json=playlists_json,
         displays=displays,
     )
@@ -374,7 +408,7 @@ def playlist_detail(playlist_id: int):
     playlist = db.session.get(Playlist, playlist_id)
     if not playlist or playlist.company_id != current_user.company_id:
         abort(404)
-    return render_template("company/playlist_detail.html", playlist=playlist)
+    return render_template("company/playlist_detail.html", playlist=playlist, now_utc=datetime.utcnow())
 
 
 @bp.post("/playlists/<int:playlist_id>")
@@ -405,6 +439,89 @@ def update_playlist(playlist_id: int):
     return redirect(url_for("company.playlist_detail", playlist_id=playlist_id))
 
 
+@bp.post("/playlists/<int:playlist_id>/schedule")
+@login_required
+def update_playlist_schedule(playlist_id: int):
+    """Update playlist schedule window + priority flag."""
+
+    company_user_required()
+    playlist = db.session.get(Playlist, playlist_id)
+    if not playlist or playlist.company_id != current_user.company_id:
+        abort(404)
+
+    try:
+        start = _parse_schedule_local_to_utc(
+            date_str=request.form.get("schedule_start_date"),
+            time_str=request.form.get("schedule_start_time"),
+        )
+        end = _parse_schedule_local_to_utc(
+            date_str=request.form.get("schedule_end_date"),
+            time_str=request.form.get("schedule_end_time"),
+        )
+    except ValueError as e:
+        flash(str(e), "danger")
+        return redirect(url_for("company.playlist_detail", playlist_id=playlist_id))
+
+    if start and end and end < start:
+        flash("End must be after start", "danger")
+        return redirect(url_for("company.playlist_detail", playlist_id=playlist_id))
+
+    playlist.schedule_start = start
+    playlist.schedule_end = end
+    db.session.commit()
+
+    flash("Schedule updated", "success")
+    return redirect(url_for("company.playlist_detail", playlist_id=playlist_id))
+
+
+@bp.post("/playlists/<int:playlist_id>/schedule/delete")
+@login_required
+def clear_playlist_schedule(playlist_id: int):
+    """Clear schedule for a playlist (sets start/end to NULL)."""
+
+    company_user_required()
+    playlist = db.session.get(Playlist, playlist_id)
+    if not playlist or playlist.company_id != current_user.company_id:
+        abort(404)
+
+    playlist.schedule_start = None
+    playlist.schedule_end = None
+    db.session.commit()
+    flash("Schedule removed", "success")
+    return redirect(url_for("company.playlist_detail", playlist_id=playlist_id))
+
+
+@bp.post("/playlists/<int:playlist_id>/priority")
+@login_required
+def update_playlist_priority(playlist_id: int):
+    """Update playlist priority flag."""
+
+    company_user_required()
+    playlist = db.session.get(Playlist, playlist_id)
+    if not playlist or playlist.company_id != current_user.company_id:
+        abort(404)
+
+    wants_json = (
+        (request.headers.get("X-Requested-With") == "XMLHttpRequest")
+        or ("application/json" in (request.headers.get("Accept") or ""))
+        or request.is_json
+    )
+
+    # Accept both form and JSON payloads.
+    raw = request.form.get("is_priority")
+    if raw is None and request.is_json:
+        raw = (request.get_json(silent=True) or {}).get("is_priority")
+
+    playlist.is_priority = bool((raw or "").strip())
+    db.session.commit()
+
+    if wants_json:
+        return jsonify({"ok": True, "is_priority": bool(playlist.is_priority)})
+
+    flash("Priority updated", "success")
+    return redirect(url_for("company.playlist_detail", playlist_id=playlist_id))
+
+
 @bp.post("/playlists/<int:playlist_id>/delete")
 @login_required
 def delete_playlist(playlist_id: int):
@@ -850,6 +967,14 @@ def update_display(display_id: int):
     def _json_error(message: str, status: int = 400):
         return jsonify({"ok": False, "error": message}), status
 
+    def _normalize_transition(val: str | None) -> str | None:
+        v = (val or "").strip().lower()
+        if not v:
+            return None
+        if v not in {"none", "fade", "slide"}:
+            return None
+        return v
+
     # Inputs from either form or JSON
     payload = request.get_json(silent=True) if request.is_json else None
 
@@ -869,6 +994,16 @@ def update_display(display_id: int):
             desc = desc[:200]
         display.description = desc
 
+    # Slide transition
+    if request.is_json:
+        if payload is None:
+            return _json_error("Invalid JSON")
+        if "transition" in payload:
+            display.transition = _normalize_transition(payload.get("transition"))
+    else:
+        # Form POST implies full update
+        display.transition = _normalize_transition(request.form.get("transition"))
+
     # Playlist assignment
     if request.is_json:
         if "playlist_id" in payload:
@@ -908,6 +1043,7 @@ def update_display(display_id: int):
                     "id": display.id,
                     "name": display.name,
                     "description": display.description,
+                    "transition": display.transition,
                     "assigned_playlist_id": display.assigned_playlist_id,
                 },
             }
diff --git a/app/static/styles.css b/app/static/styles.css
index 7318433..e713e1c 100644
--- a/app/static/styles.css
+++ b/app/static/styles.css
@@ -290,3 +290,20 @@ h1, h2, h3, .display-1, .display-2, .display-3 {
 .toast {
   border-radius: var(--radius);
 }
+
+/* Small status dot used on company dashboard next to the schedule icon */
+.schedule-status-dot {
+  display: inline-block;
+  width: 9px;
+  height: 9px;
+  border-radius: 50%;
+  vertical-align: middle;
+}
+
+.schedule-status-dot.active {
+  background: #198754;
+}
+
+.schedule-status-dot.inactive {
+  background: #dc3545;
+}
diff --git a/app/templates/company/dashboard.html b/app/templates/company/dashboard.html
index 51213c3..ffde3a9 100644
--- a/app/templates/company/dashboard.html
+++ b/app/templates/company/dashboard.html
@@ -24,7 +24,22 @@
             <tbody>
               {% for p in playlists %}
                 <tr>
-                  <td><strong>{{ p.name }}</strong></td>
+                  <td>
+                    <strong>{{ p.name }}</strong>
+                    {# Indicators: schedule + priority #}
+                    {% set has_schedule = (p.schedule_start is not none) or (p.schedule_end is not none) %}
+                    {% if has_schedule %}
+                      {% set is_active = (not p.schedule_start or p.schedule_start <= now_utc) and (not p.schedule_end or now_utc <= p.schedule_end) %}
+                      <span class="ms-2" title="Scheduled playlist" style="font-weight:700;">📅</span>
+                      <span
+                        class="ms-1 schedule-status-dot {{ 'active' if is_active else 'inactive' }}"
+                        title="{{ 'Schedule active' if is_active else 'Schedule inactive' }}"
+                      ></span>
+                    {% endif %}
+                    {% if p.is_priority %}
+                      <span class="ms-1" title="Priority playlist" style="color:#dc3545; font-weight:700;">❗</span>
+                    {% endif %}
+                  </td>
                   <td class="text-end">{{ p.items|length }}</td>
                   <td class="text-end">
                     <div class="d-inline-flex gap-2">
@@ -79,27 +94,17 @@
                           class="btn btn-ink btn-sm js-edit-playlists"
                           data-display-id="{{ d.id }}"
                           data-display-name="{{ d.name }}"
+                          data-current-desc="{{ d.description or '' }}"
+                          data-current-transition="{{ d.transition or 'none' }}"
                           data-legacy-playlist-id="{{ d.assigned_playlist_id or '' }}"
                           data-active-playlist-ids="{{ d.display_playlists | map(attribute='playlist_id') | list | join(',') }}"
                         >
-                          Select playlists
+                          Configure display
                         </button>
                         <div class="small text-muted">
                           <span class="js-active-playlists-summary" data-display-id="{{ d.id }}">—</span>
                         </div>
                       </div>
-
-                      <div class="d-flex justify-content-end">
-                        <button
-                          type="button"
-                          class="btn btn-ink btn-sm js-edit-desc"
-                          data-display-id="{{ d.id }}"
-                          data-display-name="{{ d.name }}"
-                          data-current-desc="{{ d.description or '' }}"
-                        >
-                          Edit description
-                        </button>
-                      </div>
                     </div>
                   </div>
                 </div>
@@ -122,36 +127,37 @@
     </div>
   </div>
 
-  <!-- Edit description modal -->
-  <div class="modal fade" id="editDescModal" tabindex="-1" aria-hidden="true">
-    <div class="modal-dialog">
-      <div class="modal-content">
-        <div class="modal-header">
-          <h5 class="modal-title" id="editDescModalTitle">Edit description</h5>
-          <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
-        </div>
-        <div class="modal-body">
-          <label class="form-label" for="editDescInput">Description</label>
-          <textarea class="form-control" id="editDescInput" maxlength="200" rows="3" placeholder="Optional description (max 200 chars)"></textarea>
-          <div class="form-text"><span id="editDescCount">0</span>/200</div>
-        </div>
-        <div class="modal-footer">
-          <button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">Cancel</button>
-          <button type="button" class="btn btn-brand" id="editDescSaveBtn">Save</button>
-        </div>
-      </div>
-    </div>
-  </div>
-
   <!-- Edit playlists modal -->
   <div class="modal fade" id="editPlaylistsModal" tabindex="-1" aria-hidden="true">
     <div class="modal-dialog modal-dialog-scrollable">
       <div class="modal-content">
         <div class="modal-header">
-          <h5 class="modal-title" id="editPlaylistsModalTitle">Select playlists</h5>
+          <h5 class="modal-title" id="editPlaylistsModalTitle">Configure display</h5>
           <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
         </div>
         <div class="modal-body">
+          <div class="mb-3">
+            <label class="form-label" for="editPlaylistsDescInput">Description</label>
+            <textarea
+              class="form-control"
+              id="editPlaylistsDescInput"
+              maxlength="200"
+              rows="3"
+              placeholder="Optional description (max 200 chars)"
+            ></textarea>
+            <div class="form-text"><span id="editPlaylistsDescCount">0</span>/200</div>
+          </div>
+
+          <div class="mb-3">
+            <label class="form-label" for="editPlaylistsTransitionSelect">Slide transition</label>
+            <select class="form-select" id="editPlaylistsTransitionSelect">
+              <option value="none">None</option>
+              <option value="fade">Fade</option>
+              <option value="slide">Slide</option>
+            </select>
+            <div class="form-text">Applied on the display when switching between playlist items.</div>
+          </div>
+          <hr class="my-3" />
           <div class="text-muted small mb-2">Tick the playlists that should be active on this display.</div>
           <div id="editPlaylistsList" class="d-flex flex-column gap-2"></div>
           <div class="form-text mt-2" id="editPlaylistsHint"></div>
@@ -285,66 +291,6 @@
         return data.display;
       }
 
-      // Description modal
-      const modalEl = document.getElementById('editDescModal');
-      const modal = modalEl ? new bootstrap.Modal(modalEl) : null;
-      const titleEl = document.getElementById('editDescModalTitle');
-      const inputEl = document.getElementById('editDescInput');
-      const countEl = document.getElementById('editDescCount');
-      const saveBtn = document.getElementById('editDescSaveBtn');
-
-      let activeDisplayId = null;
-
-      function updateCount() {
-        if (!inputEl || !countEl) return;
-        countEl.textContent = String((inputEl.value || '').length);
-      }
-      if (inputEl) inputEl.addEventListener('input', updateCount);
-
-      document.querySelectorAll('.js-edit-desc').forEach((btn) => {
-        btn.addEventListener('click', () => {
-          activeDisplayId = btn.dataset.displayId;
-          const displayName = btn.dataset.displayName || 'Display';
-          const currentDesc = btn.dataset.currentDesc || '';
-          if (titleEl) titleEl.textContent = `Edit description — ${displayName}`;
-          if (inputEl) inputEl.value = currentDesc;
-          updateCount();
-          if (modal) modal.show();
-        });
-      });
-
-      async function saveDescription() {
-        if (!activeDisplayId || !inputEl) return;
-        const desc = (inputEl.value || '').trim();
-        saveBtn.disabled = true;
-        try {
-          const updated = await postDisplayUpdate(activeDisplayId, { description: desc });
-          // Update visible description
-          const descEl = document.querySelector(`.js-display-desc[data-display-id="${activeDisplayId}"]`);
-          if (descEl) descEl.textContent = updated.description ? updated.description : '—';
-          // Update button's stored value
-          const btn = document.querySelector(`.js-edit-desc[data-display-id="${activeDisplayId}"]`);
-          if (btn) btn.dataset.currentDesc = updated.description || '';
-          showToast('Description saved', 'text-bg-success');
-          if (modal) modal.hide();
-        } catch (e) {
-          showToast(e && e.message ? e.message : 'Save failed', 'text-bg-danger');
-        } finally {
-          saveBtn.disabled = false;
-        }
-      }
-      if (saveBtn) {
-        saveBtn.addEventListener('click', saveDescription);
-      }
-      if (modalEl) {
-        modalEl.addEventListener('keydown', (e) => {
-          if (e.key === 'Enter' && (e.ctrlKey || e.metaKey)) {
-            e.preventDefault();
-            saveDescription();
-          }
-        });
-      }
-
       // Playlists modal
       const plModalEl = document.getElementById('editPlaylistsModal');
       const plModal = plModalEl ? new bootstrap.Modal(plModalEl) : null;
@@ -352,9 +298,18 @@
       const plListEl = document.getElementById('editPlaylistsList');
       const plHintEl = document.getElementById('editPlaylistsHint');
       const plSaveBtn = document.getElementById('editPlaylistsSaveBtn');
+      const plDescInputEl = document.getElementById('editPlaylistsDescInput');
+      const plDescCountEl = document.getElementById('editPlaylistsDescCount');
+      const plTransitionEl = document.getElementById('editPlaylistsTransitionSelect');
       let activePlDisplayId = null;
       let activePlButton = null;
 
+      function updatePlDescCount() {
+        if (!plDescInputEl || !plDescCountEl) return;
+        plDescCountEl.textContent = String((plDescInputEl.value || '').length);
+      }
+      if (plDescInputEl) plDescInputEl.addEventListener('input', updatePlDescCount);
+
       function renderPlaylistCheckboxes(selectedIds) {
         if (!plListEl) return;
         plListEl.innerHTML = '';
@@ -401,7 +356,15 @@
           activePlDisplayId = btn.dataset.displayId;
           activePlButton = btn;
           const displayName = btn.dataset.displayName || 'Display';
-          if (plTitleEl) plTitleEl.textContent = `Select playlists — ${displayName}`;
+          if (plTitleEl) plTitleEl.textContent = `Configure display — ${displayName}`;
+
+          const currentDesc = btn.dataset.currentDesc || '';
+          if (plDescInputEl) plDescInputEl.value = currentDesc;
+          updatePlDescCount();
+
+          const currentTransition = (btn.dataset.currentTransition || 'none').toLowerCase();
+          if (plTransitionEl) plTransitionEl.value = ['none','fade','slide'].includes(currentTransition) ? currentTransition : 'none';
+
           const selected = computeActiveIdsFromDataset(btn);
           renderPlaylistCheckboxes(selected);
           if (plHintEl) {
@@ -414,13 +377,31 @@
       async function savePlaylists() {
         if (!activePlDisplayId || !activePlButton || !plSaveBtn) return;
         const ids = getSelectedPlaylistIdsFromModal();
+        const desc = plDescInputEl ? (plDescInputEl.value || '').trim() : '';
+        const transition = plTransitionEl ? (plTransitionEl.value || 'none') : 'none';
         plSaveBtn.disabled = true;
         try {
-          const updated = await postDisplayPlaylists(activePlDisplayId, ids);
-          const newIds = (updated && updated.active_playlist_ids) ? updated.active_playlist_ids : ids;
+          const [updatedPlaylists, updatedDesc] = await Promise.all([
+            postDisplayPlaylists(activePlDisplayId, ids),
+            postDisplayUpdate(activePlDisplayId, { description: desc, transition })
+          ]);
+
+          const newIds = (updatedPlaylists && updatedPlaylists.active_playlist_ids)
+            ? updatedPlaylists.active_playlist_ids
+            : ids;
           setActiveIdsOnButton(activePlButton, newIds);
           refreshActivePlaylistSummary(activePlDisplayId, newIds);
-          showToast('Playlists saved', 'text-bg-success');
+
+          const descEl = document.querySelector(`.js-display-desc[data-display-id="${activePlDisplayId}"]`);
+          const newDesc = updatedDesc && typeof updatedDesc.description === 'string' ? updatedDesc.description : desc;
+          if (descEl) descEl.textContent = newDesc ? newDesc : '—';
+          activePlButton.dataset.currentDesc = newDesc || '';
+
+          // Keep button dataset in sync so reopening modal shows correct value.
+          const newTransition = updatedDesc && typeof updatedDesc.transition === 'string' ? updatedDesc.transition : transition;
+          activePlButton.dataset.currentTransition = newTransition || 'none';
+
+          showToast('Display updated', 'text-bg-success');
           refreshPreviewIframe(activePlDisplayId);
           if (plModal) plModal.hide();
         } catch (e) {
diff --git a/app/templates/company/playlist_detail.html b/app/templates/company/playlist_detail.html
index a9d623f..92dae52 100644
--- a/app/templates/company/playlist_detail.html
+++ b/app/templates/company/playlist_detail.html
@@ -61,6 +61,12 @@
     /* Modal step visibility */
     .step { display: none; }
     .step.active { display: block; }
+
+    /* Tiny status pills/icons */
+    .priority-pill { color: #dc3545; font-weight: 700; }
+    .schedule-pill { font-weight: 700; }
+    .schedule-pill.active { color: #198754; }
+    .schedule-pill.inactive { color: #dc3545; }
   </style>
   <div class="d-flex justify-content-between align-items-center">
     <h1 class="h3">Playlist: {{ playlist.name }}</h1>
@@ -80,6 +86,113 @@
     </div>
   </div>
 
+  {# Priority + schedule indicators #}
+  {% set has_schedule = (playlist.schedule_start is not none) or (playlist.schedule_end is not none) %}
+  {% set schedule_active = (not playlist.schedule_start or playlist.schedule_start <= now_utc) and (not playlist.schedule_end or now_utc <= playlist.schedule_end) %}
+
+  <div class="d-flex flex-column flex-md-row align-items-md-center justify-content-between gap-2 mt-2">
+    <div class="small">
+      {% if playlist.is_priority %}
+        <span class="me-2 priority-pill" title="Priority playlist">❗ Priority</span>
+      {% else %}
+        <span class="text-muted me-2">Not priority</span>
+      {% endif %}
+
+      {% if has_schedule %}
+        <span class="me-2" title="Scheduled">
+          <span class="schedule-pill {{ 'active' if schedule_active else 'inactive' }}">📅 Scheduled</span>
+          <span class="text-muted">(<span id="scheduleSummary">…</span>)</span>
+        </span>
+      {% else %}
+        <span class="text-muted">Not scheduled</span>
+      {% endif %}
+    </div>
+
+    <div class="d-flex align-items-center gap-2">
+      {# Priority toggle: auto-saves (no Save button) #}
+      <form
+        id="priorityForm"
+        method="post"
+        action="{{ url_for('company.update_playlist_priority', playlist_id=playlist.id) }}"
+        class="d-flex align-items-center gap-2"
+      >
+        <div class="form-check mb-0">
+          <input class="form-check-input" type="checkbox" value="1" id="priorityMain" name="is_priority" {% if playlist.is_priority %}checked{% endif %} />
+          <label class="form-check-label" for="priorityMain">Priority playlist</label>
+        </div>
+        <span class="small text-muted" id="prioritySaveStatus" aria-live="polite"></span>
+      </form>
+
+      {# Schedule button moved to where Save button used to be #}
+      <button
+        class="btn btn-outline-secondary btn-sm"
+        type="button"
+        data-bs-toggle="modal"
+        data-bs-target="#playlistScheduleModal"
+      >
+        Schedule
+      </button>
+    </div>
+  </div>
+
+  {# Schedule Modal #}
+  <div class="modal fade" id="playlistScheduleModal" tabindex="-1" aria-labelledby="playlistScheduleModalLabel" aria-hidden="true">
+    <div class="modal-dialog">
+      <div class="modal-content">
+        <div class="modal-header">
+          <h5 class="modal-title" id="playlistScheduleModalLabel">Schedule</h5>
+          <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+        </div>
+        <form id="playlistScheduleForm" method="post" action="{{ url_for('company.update_playlist_schedule', playlist_id=playlist.id) }}">
+          <div class="modal-body">
+            <div class="alert alert-info py-2 mb-3" role="note">
+              Scheduling uses your browser's local time. Empty values mean “always active”.
+            </div>
+
+            <div class="row g-3">
+              <div class="col-6">
+                <label class="form-label" for="schedule_start_date">Start date</label>
+                <input class="form-control" type="date" id="schedule_start_date" name="schedule_start_date" />
+              </div>
+              <div class="col-6">
+                <label class="form-label" for="schedule_start_time">Start time</label>
+                <input class="form-control" type="time" id="schedule_start_time" name="schedule_start_time" />
+              </div>
+              <div class="col-6">
+                <label class="form-label" for="schedule_end_date">End date</label>
+                <input class="form-control" type="date" id="schedule_end_date" name="schedule_end_date" />
+              </div>
+              <div class="col-6">
+                <label class="form-label" for="schedule_end_time">End time</label>
+                <input class="form-control" type="time" id="schedule_end_time" name="schedule_end_time" />
+              </div>
+            </div>
+
+            {# JS uses these to populate initial values #}
+            <input type="hidden" id="schedule_start_iso" value="{{ playlist.schedule_start.isoformat() if playlist.schedule_start else '' }}" />
+            <input type="hidden" id="schedule_end_iso" value="{{ playlist.schedule_end.isoformat() if playlist.schedule_end else '' }}" />
+          </div>
+
+          <div class="modal-footer">
+            {% if has_schedule %}
+              <button
+                type="submit"
+                class="btn btn-outline-danger me-auto"
+                formaction="{{ url_for('company.clear_playlist_schedule', playlist_id=playlist.id) }}"
+                formmethod="post"
+                onclick="return confirm('Remove schedule? This playlist will become always active.');"
+              >
+                Delete schedule
+              </button>
+            {% endif %}
+            <button type="button" class="btn btn-outline-ink" data-bs-dismiss="modal">Cancel</button>
+            <button type="submit" class="btn btn-brand">Save</button>
+          </div>
+        </form>
+      </div>
+    </div>
+  </div>
+
   {# Rename Playlist Modal #}
   <div class="modal fade" id="renamePlaylistModal" tabindex="-1" aria-labelledby="renamePlaylistModalLabel" aria-hidden="true">
     <div class="modal-dialog">
@@ -341,6 +454,22 @@
                     </div>
                     <input id="video-file-input" class="form-control d-none" type="file" name="file" accept="video/*" />
                     <div class="text-muted small" id="video-select-status"></div>
+
+                    {# Upload progress (for large videos) #}
+                    <div id="video-upload-progress" class="d-none mt-2" aria-live="polite">
+                      <div class="progress" style="height: 10px;">
+                        <div
+                          id="video-upload-progress-bar"
+                          class="progress-bar"
+                          role="progressbar"
+                          style="width: 0%"
+                          aria-valuenow="0"
+                          aria-valuemin="0"
+                          aria-valuemax="100"
+                        ></div>
+                      </div>
+                      <div class="text-muted small mt-1" id="video-upload-progress-text">Uploading…</div>
+                    </div>
                   </div>
                 </div>
 
@@ -357,6 +486,7 @@
               </form>
             </div>
             <div class="modal-footer">
+              <div class="small text-danger me-auto" id="add-item-error" aria-live="polite"></div>
               <button type="button" class="btn btn-outline-ink" id="add-item-back">Back</button>
               <button type="button" class="btn btn-brand" id="add-item-submit">Add</button>
             </div>
@@ -369,6 +499,120 @@
 
       <script type="module">
         (function() {
+          // -------------------------
+          // Priority toggle: auto-save
+          // -------------------------
+          const priorityForm = document.getElementById('priorityForm');
+          const priorityCb = document.getElementById('priorityMain');
+          const priorityStatus = document.getElementById('prioritySaveStatus');
+          let priorityReqId = 0;
+
+          async function savePriority() {
+            if (!priorityForm || !priorityCb) return;
+            if (priorityStatus) priorityStatus.textContent = 'Saving…';
+
+            const body = new URLSearchParams();
+            // Mirror server behavior: send "1" when checked, send empty when unchecked.
+            if (priorityCb.checked) body.set('is_priority', '1');
+
+            const reqId = ++priorityReqId;
+            const res = await fetch(priorityForm.action, {
+              method: 'POST',
+              headers: {
+                'Content-Type': 'application/x-www-form-urlencoded',
+                'X-Requested-With': 'XMLHttpRequest',
+                'Accept': 'application/json'
+              },
+              body
+            });
+
+            if (reqId !== priorityReqId) return; // newer request in flight
+
+            if (!res.ok) {
+              if (priorityStatus) priorityStatus.textContent = 'Failed to save';
+              return;
+            }
+
+            const data = await res.json().catch(() => null);
+            if (!data || !data.ok) {
+              if (priorityStatus) priorityStatus.textContent = 'Failed to save';
+              return;
+            }
+
+            if (priorityStatus) {
+              priorityStatus.textContent = 'Saved';
+              window.setTimeout(() => {
+                if (priorityStatus.textContent === 'Saved') priorityStatus.textContent = '';
+              }, 900);
+            }
+          }
+
+          // Prevent accidental full-page POST when user hits Enter inside the form.
+          priorityForm?.addEventListener('submit', (e) => e.preventDefault());
+          priorityCb?.addEventListener('change', () => {
+            savePriority().catch((err) => {
+              console.warn('Failed to save priority', err);
+              if (priorityStatus) priorityStatus.textContent = 'Failed to save';
+            });
+          });
+
+          // -------------------------
+          // Schedule modal: populate existing UTC timestamps into local date/time inputs
+          // -------------------------
+          const schedModalEl = document.getElementById('playlistScheduleModal');
+          if (schedModalEl) {
+            const startIso = document.getElementById('schedule_start_iso')?.value || '';
+            const endIso = document.getElementById('schedule_end_iso')?.value || '';
+
+            const scheduleSummary = document.getElementById('scheduleSummary');
+
+            const startDate = document.getElementById('schedule_start_date');
+            const startTime = document.getElementById('schedule_start_time');
+            const endDate = document.getElementById('schedule_end_date');
+            const endTime = document.getElementById('schedule_end_time');
+
+            function pad2(n) { return String(n).padStart(2, '0'); }
+            function toLocalDateStr(d) { return `${d.getFullYear()}-${pad2(d.getMonth()+1)}-${pad2(d.getDate())}`; }
+            function toLocalTimeStr(d) { return `${pad2(d.getHours())}:${pad2(d.getMinutes())}`; }
+
+            function toSummary() {
+              const parts = [];
+              if (startIso) {
+                const d = new Date(startIso);
+                if (!isNaN(d.getTime())) parts.push(`from ${toLocalDateStr(d)} ${toLocalTimeStr(d)}`);
+              }
+              if (endIso) {
+                const d = new Date(endIso);
+                if (!isNaN(d.getTime())) parts.push(`until ${toLocalDateStr(d)} ${toLocalTimeStr(d)}`);
+              }
+              return parts.join(' ');
+            }
+
+            function fill() {
+              if (startIso) {
+                const d = new Date(startIso);
+                if (!isNaN(d.getTime())) {
+                  if (startDate) startDate.value = toLocalDateStr(d);
+                  if (startTime) startTime.value = toLocalTimeStr(d);
+                }
+              }
+              if (endIso) {
+                const d = new Date(endIso);
+                if (!isNaN(d.getTime())) {
+                  if (endDate) endDate.value = toLocalDateStr(d);
+                  if (endTime) endTime.value = toLocalTimeStr(d);
+                }
+              }
+
+              if (scheduleSummary) scheduleSummary.textContent = toSummary() || 'scheduled';
+            }
+
+            schedModalEl.addEventListener('shown.bs.modal', fill);
+
+            // Populate summary immediately on page load
+            if (scheduleSummary) scheduleSummary.textContent = toSummary() || 'scheduled';
+          }
+
           // Keep the card layout in ONE place to ensure newly-added items match server-rendered items.
           // -------------------------
           // Add-item modal + steps
@@ -395,6 +639,12 @@
           const stepSelect = document.getElementById('step-select');
           const stepCrop = document.getElementById('step-crop');
           const backBtn = document.getElementById('add-item-back');
+          const errorEl = document.getElementById('add-item-error');
+
+          function setError(msg) {
+            if (!errorEl) return;
+            errorEl.textContent = (msg || '').trim();
+          }
 
           function showStep(which) {
             stepSelect?.classList.toggle('active', which === 'select');
@@ -411,6 +661,7 @@
 
           function setType(t) {
             typeHidden.value = t;
+            setError('');
             sectionImage.classList.toggle('d-none', t !== 'image');
             sectionWebpage.classList.toggle('d-none', t !== 'webpage');
             sectionYoutube.classList.toggle('d-none', t !== 'youtube');
@@ -570,6 +821,7 @@
           async function submitViaAjax() {
             submitBtn.disabled = true;
             cropStatus.textContent = '';
+            setError('');
 
             // If image, replace file with cropped version before sending.
             if (typeHidden.value === 'image') {
@@ -604,30 +856,125 @@
 
             const fd = new FormData(form);
 
-            const res = await fetch(form.action, {
-              method: 'POST',
-              headers: {
-                'X-Requested-With': 'XMLHttpRequest',
-                'Accept': 'application/json'
-              },
-              body: fd
-            });
+            // For upload progress we need XHR (fetch does not provide upload progress reliably).
+            const useXhrProgress = (typeHidden.value === 'video');
 
-            if (!res.ok) {
-              let errText = 'Failed to add item.';
-              try {
-                const j = await res.json();
-                if (j && j.error) errText = j.error;
-              } catch (e) {}
+            function setVideoProgressVisible(visible) {
+              const wrap = document.getElementById('video-upload-progress');
+              wrap?.classList.toggle('d-none', !visible);
+            }
+
+            function setVideoProgress(percent, text) {
+              const bar = document.getElementById('video-upload-progress-bar');
+              const txt = document.getElementById('video-upload-progress-text');
+              const p = Math.max(0, Math.min(100, Math.round(Number(percent) || 0)));
+              if (bar) {
+                bar.style.width = `${p}%`;
+                bar.setAttribute('aria-valuenow', String(p));
+              }
+              if (txt) txt.textContent = text || `${p}%`;
+            }
+
+            function resetVideoProgress() {
+              setVideoProgress(0, 'Uploading…');
+              setVideoProgressVisible(false);
+            }
+
+            let resOk = false;
+            let data = null;
+            let errorText = null;
+
+            if (useXhrProgress) {
+              // Show progress UI immediately for video uploads.
+              setVideoProgressVisible(true);
+              setVideoProgress(0, 'Uploading…');
+
+              const xhr = new XMLHttpRequest();
+              const xhrPromise = new Promise((resolve) => {
+                xhr.onreadystatechange = () => {
+                  if (xhr.readyState !== 4) return;
+                  resolve();
+                };
+              });
+
+              xhr.open('POST', form.action, true);
+              xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
+              xhr.setRequestHeader('Accept', 'application/json');
+
+              xhr.upload.onprogress = (e) => {
+                if (!e || !e.lengthComputable) {
+                  setVideoProgress(0, 'Uploading…');
+                  return;
+                }
+                const pct = (e.total > 0) ? ((e.loaded / e.total) * 100) : 0;
+                setVideoProgress(pct, `Uploading… ${Math.round(pct)}%`);
+              };
+
+              xhr.onerror = () => {
+                errorText = 'Upload failed (network error).';
+              };
+
+              xhr.send(fd);
+              await xhrPromise;
+
+              // When upload is done, server may still process the file. Give a hint.
+              setVideoProgress(100, 'Processing…');
+
+              const status = xhr.status;
+              const text = xhr.responseText || '';
+              let json = null;
+              try { json = JSON.parse(text); } catch (e) {}
+
+              resOk = (status >= 200 && status < 300);
+              data = json;
+
+              if (!resOk) {
+                // Prefer any earlier error (e.g. xhr.onerror network failure)
+                errorText = errorText || ((json && json.error) ? json.error : `Failed to add item (HTTP ${status}).`);
+              }
+            } else {
+              const res = await fetch(form.action, {
+                method: 'POST',
+                headers: {
+                  'X-Requested-With': 'XMLHttpRequest',
+                  'Accept': 'application/json'
+                },
+                body: fd
+              });
+
+              resOk = res.ok;
+              if (!resOk) {
+                let errText = 'Failed to add item.';
+                try {
+                  const j = await res.json();
+                  if (j && j.error) errText = j.error;
+                } catch (e) {}
+                errorText = errText;
+              } else {
+                data = await res.json();
+              }
+            }
+
+            // Error handling shared between fetch/XHR paths
+            if (!resOk) {
               submitBtn.disabled = false;
-              cropStatus.textContent = errText;
+              setError(errorText || 'Failed to add item.');
+              resetVideoProgress();
+              return;
+            }
+
+            // For XHR path we may not have parsed JSON (bad response)
+            if (!data) {
+              submitBtn.disabled = false;
+              setError('Failed to add item.');
+              resetVideoProgress();
               return;
             }
 
-            const data = await res.json();
             if (!data.ok) {
               submitBtn.disabled = false;
-              cropStatus.textContent = data.error || 'Failed to add item.';
+              setError(data.error || 'Failed to add item.');
+              resetVideoProgress();
               return;
             }
 
@@ -652,6 +999,7 @@
             destroyCropper();
             showStep('select');
             submitBtn.disabled = true;
+            resetVideoProgress();
             modal?.hide();
           }
 
diff --git a/app/templates/display/player.html b/app/templates/display/player.html
index c0924ac..167153a 100644
--- a/app/templates/display/player.html
+++ b/app/templates/display/player.html
@@ -7,6 +7,59 @@
     <style>
       html, body { height: 100%; width: 100%; margin: 0; background: #000; overflow: hidden; }
       #stage { position: fixed; inset: 0; width: 100vw; height: 100vh; background: #000; }
+
+      /* Slide transitions (applied by JS via classes) */
+      #stage .slide {
+        position: absolute;
+        inset: 0;
+        width: 100%;
+        height: 100%;
+      }
+      #stage .slide.enter {
+        opacity: 0;
+        transform: translateX(16px);
+      }
+      #stage.transition-none .slide.enter {
+        opacity: 1;
+        transform: none;
+      }
+      #stage.transition-fade .slide {
+        transition: opacity 420ms ease;
+      }
+      #stage.transition-fade .slide.enter {
+        opacity: 0;
+        transform: none;
+      }
+      #stage.transition-fade .slide.enter.active {
+        opacity: 1;
+      }
+      #stage.transition-fade .slide.exit {
+        opacity: 1;
+        transition: opacity 420ms ease;
+      }
+      #stage.transition-fade .slide.exit.active {
+        opacity: 0;
+      }
+
+      #stage.transition-slide .slide {
+        transition: transform 420ms ease, opacity 420ms ease;
+      }
+      #stage.transition-slide .slide.enter {
+        opacity: 0;
+        transform: translateX(48px);
+      }
+      #stage.transition-slide .slide.enter.active {
+        opacity: 1;
+        transform: translateX(0);
+      }
+      #stage.transition-slide .slide.exit {
+        opacity: 1;
+        transform: translateX(0);
+      }
+      #stage.transition-slide .slide.exit.active {
+        opacity: 0;
+        transform: translateX(-48px);
+      }
       #notice {
         position: fixed;
         inset: 0;
@@ -84,6 +137,18 @@
       let idx = 0;
       let timer = null;
 
+      const ANIM_MS = 420;
+
+      function getTransitionMode(pl) {
+        const v = (pl && pl.transition ? String(pl.transition) : 'none').toLowerCase();
+        return (v === 'fade' || v === 'slide' || v === 'none') ? v : 'none';
+      }
+
+      function applyTransitionClass(mode) {
+        stage.classList.remove('transition-none', 'transition-fade', 'transition-slide');
+        stage.classList.add(`transition-${mode}`);
+      }
+
       async function fetchPlaylist() {
         const qs = sid ? `?sid=${encodeURIComponent(sid)}` : '';
         const res = await fetch(`/api/display/${token}/playlist${qs}`, { cache: 'no-store' });
@@ -99,6 +164,78 @@
         stage.innerHTML = '';
       }
 
+      function setSlideContent(container, item) {
+        if (item.type === 'image') {
+          const el = document.createElement('img');
+          el.src = item.src;
+          container.appendChild(el);
+        } else if (item.type === 'video') {
+          const el = document.createElement('video');
+          el.src = item.src;
+          el.autoplay = true;
+          el.muted = true;
+          el.playsInline = true;
+          el.onended = next;
+          container.appendChild(el);
+        } else if (item.type === 'webpage') {
+          const el = document.createElement('iframe');
+          el.src = item.url;
+          container.appendChild(el);
+        } else if (item.type === 'youtube') {
+          const el = document.createElement('iframe');
+          // item.url is a base embed URL produced server-side (https://www.youtube-nocookie.com/embed/<id>)
+          // Add common playback params client-side.
+          const u = item.url || '';
+          const sep = u.includes('?') ? '&' : '?';
+          el.src = `${u}${sep}autoplay=1&mute=1&controls=0&rel=0&playsinline=1`;
+          container.appendChild(el);
+        }
+      }
+
+      function showItemWithTransition(item) {
+        const mode = getTransitionMode(playlist);
+        applyTransitionClass(mode);
+
+        // Create new slide container.
+        const slide = document.createElement('div');
+        slide.className = 'slide enter';
+        setSlideContent(slide, item);
+
+        // Determine previous slide (if any).
+        const prev = stage.querySelector('.slide');
+
+        // First render: no animation needed.
+        if (!prev || mode === 'none') {
+          stage.innerHTML = '';
+          slide.classList.remove('enter');
+          stage.appendChild(slide);
+          return;
+        }
+
+        // Transition: keep both on stage and animate.
+        stage.appendChild(slide);
+
+        // Trigger transition.
+        // In some browsers the style changes can get coalesced into a single paint (no animation),
+        // especially on fast/fullscreen pages. We force a layout read before activating.
+        requestAnimationFrame(() => {
+          prev.classList.add('exit');
+          // Force reflow so the browser commits initial (enter) styles.
+          // eslint-disable-next-line no-unused-expressions
+          slide.offsetHeight;
+          slide.classList.add('active');
+          prev.classList.add('active');
+        });
+
+        // Cleanup after animation.
+        window.setTimeout(() => {
+          try {
+            if (prev && prev.parentNode === stage) stage.removeChild(prev);
+            slide.classList.remove('enter');
+          } catch(e) { /* ignore */ }
+        }, ANIM_MS + 50);
+      }
+
       function next() {
         if (!playlist || !playlist.items || playlist.items.length === 0) {
           setNotice('No playlists assigned.');
@@ -109,36 +246,19 @@
         const item = playlist.items[idx % playlist.items.length];
         idx = (idx + 1) % playlist.items.length;
 
-        clearStage();
+        // Clear any active timers (but keep DOM for transition).
+        if (timer) { clearTimeout(timer); timer = null; }
         setNotice('');
 
+        showItemWithTransition(item);
+
         if (item.type === 'image') {
-          const el = document.createElement('img');
-          el.src = item.src;
-          stage.appendChild(el);
           timer = setTimeout(next, (item.duration || 10) * 1000);
         } else if (item.type === 'video') {
-          const el = document.createElement('video');
-          el.src = item.src;
-          el.autoplay = true;
-          el.muted = true;
-          el.playsInline = true;
-          el.onended = next;
-          stage.appendChild(el);
+          // next() is called on video end.
         } else if (item.type === 'webpage') {
-          const el = document.createElement('iframe');
-          el.src = item.url;
-          stage.appendChild(el);
           timer = setTimeout(next, (item.duration || 10) * 1000);
         } else if (item.type === 'youtube') {
-          const el = document.createElement('iframe');
-          // item.url is a base embed URL produced server-side (https://www.youtube-nocookie.com/embed/<id>)
-          // Add common playback params client-side.
-          const u = item.url || '';
-          const sep = u.includes('?') ? '&' : '?';
-          el.src = `${u}${sep}autoplay=1&mute=1&controls=0&rel=0&playsinline=1`;
-          stage.appendChild(el);
-
           // YouTube iframes don't reliably emit an "ended" event without the JS API.
           // We keep it simple: play for the configured duration (default 30s).
           timer = setTimeout(next, (item.duration || 30) * 1000);
@@ -151,6 +271,7 @@
         try {
           playlist = await fetchPlaylist();
           idx = 0;
+          applyTransitionClass(getTransitionMode(playlist));
           next();
         } catch (e) {
           clearStage();
@@ -181,6 +302,7 @@
             playlist = newPlaylist;
             if (oldStr !== newStr) {
               idx = 0;
+              applyTransitionClass(getTransitionMode(playlist));
               next();
             }