feat: implement hide app name feature with toggle in admin settings and update branding context

package-lock.json

@@ -13,6 +13,7 @@
         "better-sqlite3": "^11.0.0",
         "concurrently": "^9.0.0",
         "cors": "^2.8.5",
+        "date-fns": "^4.1.0",
         "dotenv": "^16.4.0",
         "express": "^4.21.0",
         "express-rate-limit": "^7.5.1",
@@ -24,6 +25,7 @@
         "pg": "^8.18.0",
         "rate-limit-redis": "^4.3.1",
         "react": "^18.3.0",
+        "react-datepicker": "^9.1.0",
         "react-dom": "^18.3.0",
         "react-hot-toast": "^2.4.0",
         "react-router-dom": "^6.28.0",
@@ -777,6 +779,59 @@
         "node": ">=18"
       }
     },
+    "node_modules/@floating-ui/core": {
+      "version": "1.7.5",
+      "resolved": "https://registry.npmjs.org/@floating-ui/core/-/core-1.7.5.tgz",
+      "integrity": "sha512-1Ih4WTWyw0+lKyFMcBHGbb5U5FtuHJuujoyyr5zTaWS5EYMeT6Jb2AuDeftsCsEuchO+mM2ij5+q9crhydzLhQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@floating-ui/utils": "^0.2.11"
+      }
+    },
+    "node_modules/@floating-ui/dom": {
+      "version": "1.7.6",
+      "resolved": "https://registry.npmjs.org/@floating-ui/dom/-/dom-1.7.6.tgz",
+      "integrity": "sha512-9gZSAI5XM36880PPMm//9dfiEngYoC6Am2izES1FF406YFsjvyBMmeJ2g4SAju3xWwtuynNRFL2s9hgxpLI5SQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@floating-ui/core": "^1.7.5",
+        "@floating-ui/utils": "^0.2.11"
+      }
+    },
+    "node_modules/@floating-ui/react": {
+      "version": "0.27.19",
+      "resolved": "https://registry.npmjs.org/@floating-ui/react/-/react-0.27.19.tgz",
+      "integrity": "sha512-31B8h5mm8YxotlE7/AU/PhNAl8eWxAmjL/v2QOxroDNkTFLk3Uu82u63N3b6TXa4EGJeeZLVcd/9AlNlVqzeog==",
+      "license": "MIT",
+      "dependencies": {
+        "@floating-ui/react-dom": "^2.1.8",
+        "@floating-ui/utils": "^0.2.11",
+        "tabbable": "^6.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=17.0.0",
+        "react-dom": ">=17.0.0"
+      }
+    },
+    "node_modules/@floating-ui/react-dom": {
+      "version": "2.1.8",
+      "resolved": "https://registry.npmjs.org/@floating-ui/react-dom/-/react-dom-2.1.8.tgz",
+      "integrity": "sha512-cC52bHwM/n/CxS87FH0yWdngEZrjdtLW/qVruo68qg+prK7ZQ4YGdut2GyDVpoGeAYe/h899rVeOVm6Oi40k2A==",
+      "license": "MIT",
+      "dependencies": {
+        "@floating-ui/dom": "^1.7.6"
+      },
+      "peerDependencies": {
+        "react": ">=16.8.0",
+        "react-dom": ">=16.8.0"
+      }
+    },
+    "node_modules/@floating-ui/utils": {
+      "version": "0.2.11",
+      "resolved": "https://registry.npmjs.org/@floating-ui/utils/-/utils-0.2.11.tgz",
+      "integrity": "sha512-RiB/yIh78pcIxl6lLMG0CgBXAZ2Y0eVHqMPYugu+9U0AeT6YBeiJpf7lbdJNIugFP5SIjwNRgo4DhR1Qxi26Gg==",
+      "license": "MIT"
+    },
     "node_modules/@ioredis/commands": {
       "version": "1.5.1",
       "resolved": "https://registry.npmjs.org/@ioredis/commands/-/commands-1.5.1.tgz",
@@ -1840,6 +1895,15 @@
         "node": ">=12"
       }
     },
+    "node_modules/clsx": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/clsx/-/clsx-2.1.1.tgz",
+      "integrity": "sha512-eYm0QWBtUrBWZWG0d386OGAw16Z995PiOVo2B7bjWSbHedGl5e0ZWaq65kOGgUSNesEIDkB9ISbTg/JK9dhCZA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/cluster-key-slot": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/cluster-key-slot/-/cluster-key-slot-1.1.2.tgz",
@@ -2007,6 +2071,16 @@
       "integrity": "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==",
       "license": "MIT"
     },
+    "node_modules/date-fns": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-4.1.0.tgz",
+      "integrity": "sha512-Ukq0owbQXxa/U3EGtsdVBkR1w7KOQ5gIBqdH2hkvknzZPYvBxb/aa6E8L7tmjFtkwZBu3UXBbjIgPo/Ez4xaNg==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/kossnocorp"
+      }
+    },
     "node_modules/debug": {
       "version": "4.4.3",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
@@ -3881,6 +3955,27 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/react-datepicker": {
+      "version": "9.1.0",
+      "resolved": "https://registry.npmjs.org/react-datepicker/-/react-datepicker-9.1.0.tgz",
+      "integrity": "sha512-lOp+m5bc+ttgtB5MHEjwiVu4nlp4CvJLS/PG1OiOe5pmg9kV73pEqO8H0Geqvg2E8gjqTaL9eRhSe+ZpeKP3nA==",
+      "license": "MIT",
+      "dependencies": {
+        "@floating-ui/react": "^0.27.15",
+        "clsx": "^2.1.1",
+        "date-fns": "^4.1.0"
+      },
+      "peerDependencies": {
+        "date-fns-tz": "^3.0.0",
+        "react": "^16.9.0 || ^17 || ^18 || ^19 || ^19.0.0-rc",
+        "react-dom": "^16.9.0 || ^17 || ^18 || ^19 || ^19.0.0-rc"
+      },
+      "peerDependenciesMeta": {
+        "date-fns-tz": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/react-dom": {
       "version": "18.3.1",
       "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-18.3.1.tgz",
@@ -4510,6 +4605,12 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/tabbable": {
+      "version": "6.4.0",
+      "resolved": "https://registry.npmjs.org/tabbable/-/tabbable-6.4.0.tgz",
+      "integrity": "sha512-05PUHKSNE8ou2dwIxTngl4EzcnsCDZGJ/iCLtDflR/SHB/ny14rXc+qU5P4mG9JkusiV7EivzY9Mhm55AzAvCg==",
+      "license": "MIT"
+    },
     "node_modules/tailwindcss": {
       "version": "3.4.19",
       "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-3.4.19.tgz",

package.json

@@ -17,6 +17,7 @@
     "better-sqlite3": "^11.0.0",
     "concurrently": "^9.0.0",
     "cors": "^2.8.5",
+    "date-fns": "^4.1.0",
     "dotenv": "^16.4.0",
     "express": "^4.21.0",
     "express-rate-limit": "^7.5.1",
@@ -28,6 +29,7 @@
     "pg": "^8.18.0",
     "rate-limit-redis": "^4.3.1",
     "react": "^18.3.0",
+    "react-datepicker": "^9.1.0",
     "react-dom": "^18.3.0",
     "react-hot-toast": "^2.4.0",
     "react-router-dom": "^6.28.0",

server/routes/branding.js

@@ -108,6 +108,8 @@ router.get('/', async (req, res) => {
       }
     } catch { /* not configured */ }
 
+    const hideAppName = await getSetting('hide_app_name');
+
     res.json({
       appName: appName || 'Redlight',
       hasLogo: !!logoFile,
@@ -118,6 +120,7 @@ router.get('/', async (req, res) => {
       privacyUrl: privacyUrl || null,
       oauthEnabled,
       oauthDisplayName,
+      hideAppName: hideAppName === 'true',
     });
   } catch (err) {
     log.branding.error('Get branding error:', err);
@@ -282,4 +285,23 @@ router.put('/privacy-url', authenticateToken, requireAdmin, async (req, res) =>
   }
 });
 
+// PUT /api/branding/hide-app-name - Toggle app name visibility (admin only)
+router.put('/hide-app-name', authenticateToken, requireAdmin, async (req, res) => {
+  try {
+    const { hideAppName } = req.body;
+    if (typeof hideAppName !== 'boolean') {
+      return res.status(400).json({ error: 'hideAppName must be a boolean' });
+    }
+    if (hideAppName) {
+      await setSetting('hide_app_name', 'true');
+    } else {
+      await deleteSetting('hide_app_name');
+    }
+    res.json({ hideAppName });
+  } catch (err) {
+    log.branding.error('Update hide app name error:', err);
+    res.status(500).json({ error: 'Could not update setting' });
+  }
+});
+
 export default router;

src/components/BrandLogo.jsx

@@ -8,7 +8,7 @@ const sizes = {
 };
 
 export default function BrandLogo({ size = 'md', className = '' }) {
-  const { appName, hasLogo, logoUrl } = useBranding();
+  const { appName, hasLogo, logoUrl, hideAppName } = useBranding();
   const s = sizes[size] || sizes.md;
 
   if (hasLogo && logoUrl) {
@@ -19,7 +19,7 @@ export default function BrandLogo({ size = 'md', className = '' }) {
           alt={appName}
           className={`${s.box} ${s.rounded} object-contain`}
         />
-        <span className={`${s.text} font-bold gradient-text`}>{appName}</span>
+        {!hideAppName && <span className={`${s.text} font-bold gradient-text`}>{appName}</span>}
       </div>
     );
   }

src/components/DateTimePicker.jsx

@@ -0,0 +1,126 @@
+import ReactDatePicker from 'react-datepicker';
+import { de } from 'date-fns/locale';
+import { Calendar as CalendarIcon, Clock, X } from 'lucide-react';
+import { forwardRef } from 'react';
+import 'react-datepicker/dist/react-datepicker.css';
+
+/**
+ * Custom DateTimePicker that reads the app's CSS variables and
+ * fully matches whatever theme is active.
+ *
+ * Props:
+ *   value      – ISO datetime string (or '')
+ *   onChange   – (isoString) => void
+ *   label      – string
+ *   required   – bool
+ *   minDate    – Date | null
+ *   icon       – 'calendar' (default) | 'clock'
+ */
+export default function DateTimePicker({
+  value,
+  onChange,
+  label,
+  required = false,
+  minDate = null,
+  icon = 'calendar',
+}) {
+  const selected = value ? new Date(value) : null;
+
+  const handleChange = (date) => {
+    if (!date) { onChange(''); return; }
+    // Produce local datetime string yyyy-MM-ddTHH:mm
+    const y = date.getFullYear();
+    const mo = String(date.getMonth() + 1).padStart(2, '0');
+    const d = String(date.getDate()).padStart(2, '0');
+    const h = String(date.getHours()).padStart(2, '0');
+    const mi = String(date.getMinutes()).padStart(2, '0');
+    onChange(`${y}-${mo}-${d}T${h}:${mi}`);
+  };
+
+  const Icon = icon === 'clock' ? Clock : CalendarIcon;
+
+  return (
+    <div className="dtp-wrapper">
+      {label && (
+        <label className="block text-sm font-medium text-th-text mb-1.5">
+          {label}{required && ' *'}
+        </label>
+      )}
+      <div className="dtp-input-wrap">
+        <Icon size={15} className="dtp-icon" />
+        <ReactDatePicker
+          selected={selected}
+          onChange={handleChange}
+          showTimeSelect
+          timeFormat="HH:mm"
+          timeIntervals={15}
+          dateFormat="dd.MM.yyyy  HH:mm"
+          locale={de}
+          minDate={minDate}
+          required={required}
+          popperPlacement="bottom-start"
+          popperModifiers={[
+            { name: 'offset', options: { offset: [0, 4] } },
+            { name: 'preventOverflow', options: { rootBoundary: 'viewport', tether: false, altAxis: true } },
+          ]}
+          customInput={<CustomInput />}
+          calendarClassName="dtp-calendar"
+          dayClassName={(date) => 'dtp-day'}
+          timeClassName={() => 'dtp-time-item'}
+          renderCustomHeader={CalendarHeader}
+          isClearable
+          clearButtonClassName="dtp-clear-btn"
+          wrapperClassName="dtp-dp-wrapper"
+        />
+      </div>
+    </div>
+  );
+}
+
+// ── Custom Input ─────────────────────────────────────────────────────────────
+const CustomInput = forwardRef(({ value, onClick, onClear, ...rest }, ref) => (
+  <button
+    ref={ref}
+    type="button"
+    onClick={onClick}
+    className="dtp-custom-input"
+    {...rest}
+  >
+    <span className={value ? 'dtp-value' : 'dtp-placeholder'}>
+      {value || 'Datum & Uhrzeit wählen …'}
+    </span>
+  </button>
+));
+CustomInput.displayName = 'CustomInput';
+
+// ── Custom Header ─────────────────────────────────────────────────────────────
+function CalendarHeader({
+  date,
+  decreaseMonth, increaseMonth,
+  prevMonthButtonDisabled, nextMonthButtonDisabled,
+}) {
+  const label = date.toLocaleString('de', { month: 'long', year: 'numeric' });
+  return (
+    <div className="dtp-header">
+      <button
+        type="button"
+        onClick={decreaseMonth}
+        disabled={prevMonthButtonDisabled}
+        className="dtp-nav-btn"
+        aria-label="Vorheriger Monat"
+      >
+        ‹
+      </button>
+      <span className="dtp-month-label">{label}</span>
+      <button
+        type="button"
+        onClick={increaseMonth}
+        disabled={nextMonthButtonDisabled}
+        className="dtp-nav-btn"
+        aria-label="Nächster Monat"
+      >
+        ›
+      </button>
+    </div>
+  );
+}

src/contexts/BrandingContext.jsx

@@ -13,6 +13,7 @@ export function BrandingProvider({ children }) {
     defaultTheme: null,
     imprintUrl: null,
     privacyUrl: null,
+    hideAppName: false,
   });
 
   const fetchBranding = useCallback(async () => {

src/i18n/de.json

@@ -373,6 +373,9 @@
     "appNameLabel": "App-Name",
     "appNameUpdated": "App-Name aktualisiert",
     "appNameUpdateFailed": "App-Name konnte nicht aktualisiert werden",
+    "hideAppNameLabel": "App-Namen ausblenden",
+    "hideAppNameHint": "Nur das Logo anzeigen, den App-Namen daneben ausblenden.",
+    "hideAppNameFailed": "Einstellung konnte nicht gespeichert werden",
     "defaultThemeLabel": "Standard-Theme",
     "defaultThemeDesc": "Wird für nicht angemeldete Seiten (Gast-Join, Login, Startseite) verwendet, wenn keine persönliche Einstellung gesetzt ist.",
     "defaultThemeSaved": "Standard-Theme gespeichert",

src/i18n/en.json

@@ -373,6 +373,9 @@
     "appNameLabel": "App name",
     "appNameUpdated": "App name updated",
     "appNameUpdateFailed": "Could not update app name",
+    "hideAppNameLabel": "Hide app name",
+    "hideAppNameHint": "Only show the logo, hide the app name text next to it.",
+    "hideAppNameFailed": "Could not update setting",
     "defaultThemeLabel": "Default Theme",
     "defaultThemeDesc": "Applied to unauthenticated pages (guest join, login, home) when no personal preference is set.",
     "defaultThemeSaved": "Default theme saved",

src/index.css

@@ -714,39 +714,6 @@
     transition-all duration-200;
   }
 
-  /* ── Styled date/time picker wrapper ── */
-  .datetime-picker {
-    @apply relative;
-  }
-
-  .datetime-picker .datetime-icon {
-    @apply absolute left-3.5 top-1/2 -translate-y-1/2 pointer-events-none text-th-text-s z-10;
-  }
-
-  .datetime-picker input[type="datetime-local"],
-  .datetime-picker input[type="date"],
-  .datetime-picker input[type="time"] {
-    @apply w-full pl-11 pr-3 py-2.5 rounded-lg
-    bg-th-input text-th-text
-    border border-th-input-b
-    focus:outline-none focus:ring-2 focus:ring-th-ring focus:border-transparent
-    transition-all duration-200;
-    font-variant-numeric: tabular-nums;
-  }
-
-  .datetime-picker input::-webkit-calendar-picker-indicator {
-    cursor: pointer;
-    border-radius: 4px;
-    padding: 4px;
-    opacity: 0.6;
-    transition: opacity 0.15s;
-    filter: var(--picker-icon-filter, none);
-  }
-
-  .datetime-picker input::-webkit-calendar-picker-indicator:hover {
-    opacity: 1;
-  }
-
   .card {
     @apply bg-th-card rounded-xl border border-th-border
     shadow-th transition-all duration-200;
@@ -772,3 +739,317 @@
     background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
   }
 }
+
+/* ═══════════════════════════════════════════════════════════════
+   CUSTOM DATE/TIME PICKER  —  fully themed via CSS variables
+   ═══════════════════════════════════════════════════════════════ */
+
+/* ── Wrapper & trigger button ─────────────────────────────────── */
+.dtp-dp-wrapper {
+  width: 100%;
+}
+
+.dtp-input-wrap {
+  position: relative;
+  width: 100%;
+}
+
+.dtp-icon {
+  position: absolute;
+  left: 0.875rem;
+  top: 50%;
+  transform: translateY(-50%);
+  color: var(--text-secondary);
+  pointer-events: none;
+  z-index: 1;
+}
+
+.dtp-custom-input {
+  width: 100%;
+  display: flex;
+  align-items: center;
+  padding: 0.625rem 0.875rem 0.625rem 2.5rem;
+  border-radius: 0.5rem;
+  background: var(--input-bg);
+  border: 1px solid var(--input-border);
+  color: var(--text-primary);
+  font-size: 0.875rem;
+  text-align: left;
+  transition: border-color 0.15s, box-shadow 0.15s;
+  cursor: pointer;
+  line-height: 1.5;
+}
+
+.dtp-custom-input:focus,
+.dtp-custom-input:focus-visible {
+  outline: none;
+  border-color: transparent;
+  box-shadow: 0 0 0 2px var(--ring);
+}
+
+.dtp-custom-input:hover {
+  border-color: var(--accent);
+}
+
+.dtp-placeholder {
+  color: var(--text-secondary);
+}
+
+.dtp-value {
+  color: var(--text-primary);
+  font-variant-numeric: tabular-nums;
+}
+
+/* ── Popper & calendar container ──────────────────────────────── */
+.react-datepicker-popper {
+  z-index: 100 !important;
+}
+
+.dtp-calendar.react-datepicker {
+  background: var(--card-bg);
+  border: 1px solid var(--border);
+  border-radius: 0.75rem;
+  box-shadow: 0 10px 25px -5px var(--shadow-color), 0 4px 10px -6px var(--shadow-color);
+  font-family: inherit;
+  font-size: 0.8125rem;
+  color: var(--text-primary);
+  overflow: hidden;
+  display: flex;
+}
+
+/* hide the default triangle/arrow */
+.react-datepicker-popper[data-placement^="bottom"] .react-datepicker__triangle,
+.react-datepicker-popper[data-placement^="top"] .react-datepicker__triangle {
+  display: none;
+}
+
+/* ── Header (custom rendered) ─────────────────────────────────── */
+.dtp-calendar .react-datepicker__header {
+  background: var(--bg-secondary);
+  border-bottom: 1px solid var(--border);
+  padding: 0;
+}
+
+.dtp-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 0.625rem 0.75rem 0.5rem;
+}
+
+.dtp-month-label {
+  font-weight: 600;
+  font-size: 0.875rem;
+  color: var(--text-primary);
+  letter-spacing: 0.01em;
+}
+
+.dtp-nav-btn {
+  width: 1.75rem;
+  height: 1.75rem;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: 0.375rem;
+  background: transparent;
+  border: none;
+  color: var(--text-secondary);
+  font-size: 1.2rem;
+  cursor: pointer;
+  transition: background 0.15s, color 0.15s;
+  line-height: 1;
+  padding-bottom: 1px;
+}
+
+.dtp-nav-btn:hover:not(:disabled) {
+  background: var(--hover-bg);
+  color: var(--text-primary);
+}
+
+.dtp-nav-btn:disabled {
+  opacity: 0.3;
+  cursor: default;
+}
+
+/* ── Day names row ────────────────────────────────────────────── */
+.dtp-calendar .react-datepicker__day-names {
+  background: var(--bg-secondary);
+  border-bottom: 1px solid var(--border);
+  display: flex;
+  justify-content: space-around;
+  padding: 0.25rem 0.5rem 0.375rem;
+  margin: 0;
+}
+
+.dtp-calendar .react-datepicker__day-name {
+  color: var(--text-secondary);
+  font-size: 0.6875rem;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+  width: 2rem;
+  text-align: center;
+  line-height: 1.5;
+}
+
+/* ── Month / days grid ────────────────────────────────────────── */
+.dtp-calendar .react-datepicker__month {
+  background: var(--card-bg);
+  padding: 0.5rem;
+  margin: 0;
+}
+
+.dtp-calendar .react-datepicker__week {
+  display: flex;
+  justify-content: space-around;
+}
+
+.dtp-calendar .react-datepicker__day {
+  width: 2rem;
+  height: 2rem;
+  line-height: 2rem;
+  border-radius: 0.375rem;
+  color: var(--text-primary);
+  font-size: 0.8125rem;
+  transition: background 0.12s, color 0.12s;
+  margin: 0.1rem;
+  text-align: center;
+}
+
+.dtp-calendar .react-datepicker__day:hover:not(.react-datepicker__day--selected):not(.react-datepicker__day--disabled) {
+  background: var(--hover-bg);
+  color: var(--text-primary);
+  border-radius: 0.375rem;
+}
+
+.dtp-calendar .react-datepicker__day--selected,
+.dtp-calendar .react-datepicker__day--keyboard-selected {
+  background: var(--accent) !important;
+  color: var(--accent-text) !important;
+  border-radius: 0.375rem;
+  font-weight: 600;
+}
+
+.dtp-calendar .react-datepicker__day--today:not(.react-datepicker__day--selected) {
+  font-weight: 700;
+  color: var(--accent);
+  position: relative;
+}
+
+.dtp-calendar .react-datepicker__day--today:not(.react-datepicker__day--selected)::after {
+  content: '';
+  position: absolute;
+  bottom: 3px;
+  left: 50%;
+  transform: translateX(-50%);
+  width: 4px;
+  height: 4px;
+  border-radius: 50%;
+  background: var(--accent);
+}
+
+.dtp-calendar .react-datepicker__day--outside-month {
+  color: var(--text-secondary);
+  opacity: 0.4;
+}
+
+.dtp-calendar .react-datepicker__day--disabled {
+  color: var(--text-secondary);
+  opacity: 0.3;
+  cursor: not-allowed;
+}
+
+/* ── Time column ──────────────────────────────────────────────── */
+.dtp-calendar .react-datepicker__time-container {
+  border-left: 1px solid var(--border);
+  background: var(--card-bg);
+  width: 90px;
+}
+
+.dtp-calendar .react-datepicker__time-container .react-datepicker__header {
+  padding: 0.5rem;
+  text-align: center;
+}
+
+.dtp-calendar .react-datepicker__header--time {
+  background: var(--bg-secondary);
+  border-bottom: 1px solid var(--border);
+  padding: 0.5rem !important;
+}
+
+.dtp-calendar .react-datepicker__header--time .react-datepicker-time__header {
+  font-size: 0.75rem;
+  font-weight: 600;
+  color: var(--text-secondary);
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+}
+
+.dtp-calendar .react-datepicker__time {
+  background: var(--card-bg);
+}
+
+.dtp-calendar .react-datepicker__time-box {
+  width: 90px !important;
+}
+
+.dtp-calendar .react-datepicker__time-list {
+  scrollbar-width: thin;
+  scrollbar-color: var(--border) transparent;
+}
+
+.dtp-calendar .react-datepicker__time-list-item {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 0.375rem 0 !important;
+  height: auto !important;
+  font-size: 0.8125rem;
+  color: var(--text-primary);
+  transition: background 0.1s, color 0.1s;
+  border-radius: 0;
+}
+
+.dtp-calendar .react-datepicker__time-list-item:hover:not(.react-datepicker__time-list-item--selected) {
+  background: var(--hover-bg) !important;
+  color: var(--text-primary);
+}
+
+.dtp-calendar .react-datepicker__time-list-item--selected {
+  background: var(--accent) !important;
+  color: var(--accent-text) !important;
+  font-weight: 600;
+}
+
+.dtp-calendar .react-datepicker__time-list-item--disabled {
+  color: var(--text-secondary);
+  opacity: 0.3;
+}
+
+/* ── Clear button ─────────────────────────────────────────────── */
+.react-datepicker__close-icon {
+  right: 0.5rem;
+  padding: 0;
+}
+
+.react-datepicker__close-icon::after {
+  background: var(--bg-tertiary) !important;
+  color: var(--text-secondary) !important;
+  font-size: 0.875rem;
+  width: 1.25rem;
+  height: 1.25rem;
+  line-height: 1.25rem;
+  border-radius: 0.25rem;
+  transition: background 0.15s, color 0.15s;
+}
+
+.react-datepicker__close-icon:hover::after {
+  background: var(--error) !important;
+  color: #fff !important;
+}
+
+/* ── Month navigation (react-datepicker default, hidden since custom header used) ── */
+.dtp-calendar .react-datepicker__navigation {
+  display: none;
+}
+

src/pages/Admin.jsx

@@ -16,7 +16,7 @@ import toast from 'react-hot-toast';
 export default function Admin() {
   const { user } = useAuth();
   const { t, language } = useLanguage();
-  const { appName, hasLogo, logoUrl, defaultTheme, registrationMode, imprintUrl, privacyUrl, refreshBranding } = useBranding();
+  const { appName, hasLogo, logoUrl, defaultTheme, registrationMode, imprintUrl, privacyUrl, hideAppName, refreshBranding } = useBranding();
   const navigate = useNavigate();
   const [users, setUsers] = useState([]);
   const [loading, setLoading] = useState(true);
@@ -47,6 +47,7 @@ export default function Admin() {
   const [savingImprintUrl, setSavingImprintUrl] = useState(false);
   const [editPrivacyUrl, setEditPrivacyUrl] = useState('');
   const [savingPrivacyUrl, setSavingPrivacyUrl] = useState(false);
+  const [savingHideAppName, setSavingHideAppName] = useState(false);
 
   // OAuth state
   const [oauthConfig, setOauthConfig] = useState(null);
@@ -168,6 +169,18 @@ export default function Admin() {
     }
   };
 
+  const handleHideAppNameToggle = async (value) => {
+    setSavingHideAppName(true);
+    try {
+      await api.put('/branding/hide-app-name', { hideAppName: value });
+      refreshBranding();
+    } catch {
+      toast.error(t('admin.hideAppNameFailed'));
+    } finally {
+      setSavingHideAppName(false);
+    }
+  };
+
   const handleAppNameSave = async () => {
     if (!editAppName.trim()) return;
     setSavingName(true);
@@ -447,6 +460,28 @@ export default function Admin() {
                 {savingName ? <Loader2 size={14} className="animate-spin" /> : t('common.save')}
               </button>
             </div>
+            {hasLogo && (
+              <div className="flex items-center justify-between mt-3 p-3 rounded-lg bg-th-bg-s border border-th-border">
+                <div className="min-w-0">
+                  <p className="text-sm font-medium text-th-text">{t('admin.hideAppNameLabel')}</p>
+                  <p className="text-xs text-th-text-s mt-0.5">{t('admin.hideAppNameHint')}</p>
+                </div>
+                <button
+                  type="button"
+                  disabled={savingHideAppName}
+                  onClick={() => handleHideAppNameToggle(!hideAppName)}
+                  className={`relative inline-flex h-5 w-9 flex-shrink-0 cursor-pointer rounded-full border-2 border-transparent transition-colors duration-200 ease-in-out focus:outline-none focus:ring-2 focus:ring-th-ring focus:ring-offset-1 disabled:opacity-50 ml-4 ${
+                    hideAppName ? 'bg-th-accent' : 'bg-th-border'
+                  }`}
+                  aria-checked={hideAppName}
+                  role="switch"
+                >
+                  <span className={`pointer-events-none inline-block h-4 w-4 transform rounded-full bg-white shadow ring-0 transition duration-200 ease-in-out ${
+                    hideAppName ? 'translate-x-4' : 'translate-x-0'
+                  }`} />
+                </button>
+              </div>
+            )}
           </div>
         </div>
 

src/pages/Calendar.jsx

@@ -1,12 +1,13 @@
 import { useState, useEffect, useMemo } from 'react';
 import {
-  ChevronLeft, ChevronRight, Plus, Calendar as CalendarIcon, Clock, Video,
+  ChevronLeft, ChevronRight, Plus, Clock, Video,
   Loader2, Download, Share2, Globe, Trash2, Edit, X, UserPlus, Send, ExternalLink,
 } from 'lucide-react';
 import api from '../services/api';
 import { useAuth } from '../contexts/AuthContext';
 import { useLanguage } from '../contexts/LanguageContext';
 import Modal from '../components/Modal';
+import DateTimePicker from '../components/DateTimePicker';
 import toast from 'react-hot-toast';
 
 const COLORS = ['#6366f1', '#ef4444', '#f59e0b', '#10b981', '#3b82f6', '#8b5cf6', '#ec4899', '#14b8a6'];
@@ -533,30 +534,21 @@ export default function Calendar() {
             </div>
 
             <div className="grid grid-cols-2 gap-4">
-              <div>
+              <DateTimePicker
-                <label className="block text-sm font-medium text-th-text mb-1.5">{t('calendar.startTime')} *</label>
+                label={t('calendar.startTime')}
-                <div className="datetime-picker">
+                value={form.start_time}
-                  <CalendarIcon size={16} className="datetime-icon" />
+                onChange={v => setForm({ ...form, start_time: v })}
-                  <input
+                required
-                    type="datetime-local"
+                icon="calendar"
-                    value={form.start_time}
+              />
-                    onChange={e => setForm({ ...form, start_time: e.target.value })}
+              <DateTimePicker
-                    required
+                label={t('calendar.endTime')}
-                  />
+                value={form.end_time}
-                </div>
+                onChange={v => setForm({ ...form, end_time: v })}
-              </div>
+                required
-              <div>
+                icon="clock"
-                <label className="block text-sm font-medium text-th-text mb-1.5">{t('calendar.endTime')} *</label>
+                minDate={form.start_time ? new Date(form.start_time) : null}
-                <div className="datetime-picker">
+              />
-                  <Clock size={16} className="datetime-icon" />
-                  <input
-                    type="datetime-local"
-                    value={form.end_time}
-                    onChange={e => setForm({ ...form, end_time: e.target.value })}
-                    required
-                  />
-                </div>
-              </div>
             </div>
             <div className="flex items-center gap-1.5 -mt-2 text-xs text-th-text-s">
               <Globe size={12} className="flex-shrink-0" />