diff --git a/client/src/App.css b/client/src/App.css
index 2868e45..6d40766 100644
--- a/client/src/App.css
+++ b/client/src/App.css
@@ -905,6 +905,36 @@ html.scheme-dark .themed-select-option.is-selected {
   color: var(--app-text-heading);
 }
 
+.section-toolbar {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  align-items: center;
+}
+
+.copy-link-row {
+  display: flex;
+  gap: 8px;
+  align-items: center;
+  width: 100%;
+  min-width: 0;
+}
+
+.copy-link-row .input-text {
+  flex: 1;
+  min-width: 0;
+}
+
+.form-actions--start {
+  justify-content: flex-start;
+}
+
+.table-responsive {
+  width: 100%;
+  overflow-x: auto;
+  -webkit-overflow-scrolling: touch;
+}
+
 .btn-refresh {
   background: none;
   border: none;
@@ -1645,6 +1675,224 @@ html.scheme-dark .themed-select-option.is-selected {
   .hide-mobile {
     display: none !important;
   }
+
+  .dashboard-header,
+  .app-header {
+    flex-wrap: wrap;
+    align-items: flex-start;
+    gap: 12px;
+  }
+
+  .app-header-left {
+    flex: 1 1 100%;
+    min-width: 0;
+    align-items: flex-start;
+    gap: 10px;
+  }
+
+  .app-title-area {
+    min-width: 0;
+    flex: 1;
+  }
+
+  .app-title-area h2 {
+    font-size: 17px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+    max-width: 100%;
+  }
+
+  .app-title-row {
+    gap: 6px;
+  }
+
+  .app-subtitle {
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .header-brand {
+    flex: 1 1 auto;
+    min-width: 0;
+  }
+
+  .header-brand h1 {
+    font-size: 20px;
+  }
+
+  .header-actions {
+    flex: 1 1 100%;
+    flex-wrap: wrap;
+    justify-content: flex-end;
+    gap: 8px;
+  }
+
+  .conn-status > span:not(.pulse-dot) {
+    display: none;
+  }
+
+  .skipper-badge__name {
+    display: none;
+  }
+
+  .btn-back {
+    padding: 8px 10px;
+    flex-shrink: 0;
+  }
+
+  .section-title-bar {
+    flex-direction: column;
+    align-items: stretch;
+    gap: 12px;
+  }
+
+  .section-toolbar {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 8px;
+    width: 100%;
+  }
+
+  .section-toolbar .btn {
+    flex: 1 1 auto;
+    min-width: 0;
+  }
+
+  .section-toolbar .btn.primary {
+    flex: 1 1 100%;
+  }
+
+  .section-title-left {
+    flex-direction: column;
+    align-items: stretch;
+    gap: 10px;
+  }
+
+  .section-title-left .form-header h2 {
+    font-size: 16px;
+    white-space: normal;
+    word-break: break-word;
+  }
+
+  .logbooks-grid {
+    grid-template-columns: 1fr;
+    gap: 16px;
+  }
+
+  .logbook-card {
+    flex-wrap: wrap;
+    padding: 16px;
+    gap: 12px;
+  }
+
+  .card-meta {
+    flex-wrap: wrap;
+  }
+
+  .card-info h3 {
+    white-space: normal;
+    word-break: break-word;
+  }
+
+  .editor-header {
+    flex-wrap: wrap;
+    gap: 10px;
+  }
+
+  .crew-grid {
+    grid-template-columns: 1fr;
+  }
+
+  .copy-link-row {
+    flex-direction: column;
+    align-items: stretch;
+  }
+
+  .copy-link-row .btn {
+    width: 100%;
+  }
+
+  .form-actions--start {
+    flex-direction: column;
+    align-items: stretch;
+  }
+
+  .form-actions--start .btn {
+    width: 100%;
+  }
+
+  .table-responsive {
+    width: 100%;
+    overflow-x: auto;
+    -webkit-overflow-scrolling: touch;
+  }
+
+  .table-responsive table {
+    min-width: 480px;
+  }
+
+  .custom-dialog-overlay {
+    padding: max(16px, env(safe-area-inset-left)) max(16px, env(safe-area-inset-right));
+    align-items: flex-end;
+  }
+
+  .custom-dialog-card {
+    width: 100%;
+    max-width: none;
+    padding: 22px 18px;
+    margin-bottom: env(safe-area-inset-bottom, 0px);
+  }
+
+  .custom-dialog-actions {
+    flex-direction: column-reverse;
+    gap: 10px;
+  }
+
+  .custom-dialog-actions .btn {
+    width: 100%;
+    margin: 0 !important;
+  }
+
+  .disclaimer-modal-overlay {
+    padding: max(12px, env(safe-area-inset-left)) max(12px, env(safe-area-inset-right));
+    align-items: flex-end;
+  }
+
+  .disclaimer-modal-panel,
+  .registration-disclaimer--modal {
+    width: 100%;
+    max-width: none;
+  }
+
+  .auth-card {
+    padding: 28px 20px;
+    max-width: calc(100vw - 24px);
+  }
+
+  .app-layout,
+  .dashboard-container {
+    padding-bottom: calc(56px + env(safe-area-inset-bottom, 0px));
+  }
+
+  .track-info-left {
+    flex-wrap: wrap;
+  }
+
+  .track-actions {
+    width: 100%;
+  }
+
+  .track-actions .btn {
+    flex: 1 1 calc(50% - 4px);
+    justify-content: center;
+  }
+
+  #openseamap-container,
+  .track-map-container {
+    height: min(360px, 45svh);
+  }
 }
 
 /* ========================================== */
@@ -2267,6 +2515,12 @@ html.theme-cupertino .events-scroll-container {
   color: #94a3b8;
 }
 
+.track-actions {
+  display: flex;
+  gap: 8px;
+  flex-wrap: wrap;
+}
+
 .track-error-msg {
   color: #ef4444;
   background: rgba(239, 68, 68, 0.1);
@@ -3352,7 +3606,9 @@ body.app-tour-active .app-tour-target-active {
 .app-tour-tooltip {
   position: fixed;
   z-index: 10002;
+  box-sizing: border-box;
   width: min(420px, calc(100vw - 32px));
+  max-width: calc(100vw - 32px);
   padding: 20px 20px 16px;
   border-radius: 16px;
   background: #1e293b;
@@ -3361,10 +3617,19 @@ body.app-tour-active .app-tour-target-active {
   pointer-events: auto;
 }
 
+.app-tour-tooltip:not(.centered) {
+  left: max(16px, env(safe-area-inset-left, 0px));
+  right: max(16px, env(safe-area-inset-right, 0px));
+  width: auto;
+  max-width: none;
+}
+
 .app-tour-tooltip.centered {
   top: 50%;
   left: 50%;
   transform: translate(-50%, -50%);
+  width: min(420px, calc(100vw - 32px - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px)));
+  max-width: calc(100vw - 32px - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px));
 }
 
 .app-tour-close {
@@ -3441,6 +3706,34 @@ body.app-tour-active .app-tour-target-active {
   display: inline-flex;
   align-items: center;
   gap: 6px;
+  flex-shrink: 0;
+}
+
+@media (max-width: 520px) {
+  .app-tour-tooltip {
+    padding: 18px 16px 14px;
+  }
+
+  .app-tour-actions {
+    flex-direction: column;
+    align-items: stretch;
+    gap: 10px;
+  }
+
+  .app-tour-nav {
+    margin-left: 0;
+    width: 100%;
+  }
+
+  .app-tour-nav-btn {
+    flex: 1;
+    justify-content: center;
+    min-width: 0;
+  }
+}
+
+body.app-tour-active .pwa-install-banner {
+  display: none !important;
 }
 
 body.app-tour-active .disclaimer-modal-overlay.feedback-modal-overlay--tour {
diff --git a/client/src/App.tsx b/client/src/App.tsx
index 5d1e7ee..a984777 100644
--- a/client/src/App.tsx
+++ b/client/src/App.tsx
@@ -421,7 +421,7 @@ function App() {
     )
   }
 
-  const pwaInstallBanner = <PwaInstallPrompt variant="banner" />
+  const pwaInstallBanner = !isActive ? <PwaInstallPrompt variant="banner" /> : null
 
   const logbookReadOnly =
     activeLogbookRecord?.isShared === 1 && activeAccessRole === 'READ'
@@ -446,9 +446,9 @@ function App() {
         {/* Active Logbook Header */}
         <header className="app-header">
           <div className="app-header-left">
-            <button className="btn-back" onClick={handleBackToDashboard}>
+            <button className="btn-back" onClick={handleBackToDashboard} title={t('nav.dashboard')}>
               <ChevronLeft size={16} />
-              {t('nav.dashboard')}
+              <span className="hide-mobile">{t('nav.dashboard')}</span>
             </button>
             <div className="app-title-area">
               <div className="app-title-row">
diff --git a/client/src/components/AppTourOverlay.tsx b/client/src/components/AppTourOverlay.tsx
index edfd2a3..0f45b38 100644
--- a/client/src/components/AppTourOverlay.tsx
+++ b/client/src/components/AppTourOverlay.tsx
@@ -15,12 +15,33 @@ interface SpotlightRect {
   height: number
 }
 
+const TOOLTIP_EDGE_MARGIN = 16
+const TOOLTIP_ESTIMATED_HEIGHT = 240
+
 function buildCutoutClipPath(rect: SpotlightRect): string {
   const right = rect.left + rect.width
   const bottom = rect.top + rect.height
   return `polygon(evenodd, 0 0, 100vw 0, 100vw 100vh, 0 100vh, 0 0, ${rect.left}px ${rect.top}px, ${right}px ${rect.top}px, ${right}px ${bottom}px, ${rect.left}px ${bottom}px, ${rect.left}px ${rect.top}px)`
 }
 
+function computeTooltipTop(spotlight: SpotlightRect): number {
+  const viewportBottom = window.innerHeight - TOOLTIP_EDGE_MARGIN
+  const below = spotlight.top + spotlight.height + 12
+  if (below + TOOLTIP_ESTIMATED_HEIGHT <= viewportBottom) {
+    return below
+  }
+
+  const above = spotlight.top - 12 - TOOLTIP_ESTIMATED_HEIGHT
+  if (above >= TOOLTIP_EDGE_MARGIN) {
+    return above
+  }
+
+  return Math.max(
+    TOOLTIP_EDGE_MARGIN,
+    Math.min(below, viewportBottom - TOOLTIP_ESTIMATED_HEIGHT)
+  )
+}
+
 export default function AppTourOverlay() {
   const { t } = useTranslation()
   const {
@@ -111,12 +132,8 @@ export default function AppTourOverlay() {
   const tooltipStyle = centered
     ? undefined
     : spotlight
-      ? {
-          top: Math.min(window.innerHeight - 220, spotlight.top + spotlight.height + 12),
-          left: Math.min(window.innerWidth - 340, Math.max(16, spotlight.left)),
-          maxWidth: '420px'
-        }
-      : { top: '20%', left: '50%', transform: 'translateX(-50%)', maxWidth: '420px' }
+      ? { top: computeTooltipTop(spotlight) }
+      : { top: '20%' }
 
   const backdropStyle = spotlight && !centered
     ? { clipPath: buildCutoutClipPath(spotlight) }
diff --git a/client/src/components/LogEntriesList.tsx b/client/src/components/LogEntriesList.tsx
index 074578e..b52faae 100644
--- a/client/src/components/LogEntriesList.tsx
+++ b/client/src/components/LogEntriesList.tsx
@@ -372,7 +372,7 @@ export default function LogEntriesList({
           <Calendar size={24} className="form-icon" />
           <h2>{t('logs.title')}</h2>
         </div>
-        <div style={{ display: 'flex', gap: '8px', alignItems: 'center' }}>
+        <div className="section-toolbar">
           <button className="btn secondary" onClick={handleDownloadCsv} disabled={loading || exporting || entries.length === 0} style={{ width: 'auto', padding: '8px 16px' }} title={t('logs.export_csv')}>
             <Download size={16} />
             <span className="hide-mobile">{exporting ? t('logs.exporting') : t('logs.export_csv')}</span>
@@ -384,9 +384,9 @@ export default function LogEntriesList({
           </button>
 
           {!readOnly && (
-            <button className="btn primary" onClick={handleCreate} disabled={loading || exporting} style={{ width: 'auto', padding: '8px 16px' }}>
+            <button className="btn primary" onClick={handleCreate} disabled={loading || exporting} style={{ width: 'auto', padding: '8px 16px' }} title={t('logs.new_entry')}>
               <Plus size={16} />
-              {t('logs.new_entry')}
+              <span className="hide-mobile">{t('logs.new_entry')}</span>
             </button>
           )}
         </div>
diff --git a/client/src/components/LogEntryEditor.tsx b/client/src/components/LogEntryEditor.tsx
index 8e3f79f..e234ad0 100644
--- a/client/src/components/LogEntryEditor.tsx
+++ b/client/src/components/LogEntryEditor.tsx
@@ -992,7 +992,7 @@ export default function LogEntryEditor({
             style={{ width: 'auto', padding: '8px 16px' }}
           >
             <Download size={16} />
-            <span>{exporting ? t('logs.exporting_pdf') : t('logs.export_pdf')}</span>
+            <span className="hide-mobile">{exporting ? t('logs.exporting_pdf') : t('logs.export_pdf')}</span>
           </button>
         </div>
       </div>
@@ -1567,15 +1567,16 @@ export default function LogEntryEditor({
                     )}
                   </span>
                 </div>
-                <div style={{ display: 'flex', gap: '8px', flexWrap: 'wrap' }}>
+                <div className="track-actions">
                   <button
                     type="button"
                     className="btn secondary"
                     onClick={() => downloadTrackFile(savedTrack)}
                     style={{ width: 'auto', padding: '6px 12px', fontSize: '13px', display: 'flex', alignItems: 'center', gap: '4px' }}
+                    title={t('logs.gps_tracking_btn_gpx')}
                   >
                     <Download size={14} />
-                    {t('logs.gps_tracking_btn_gpx')}
+                    <span className="hide-mobile">{t('logs.gps_tracking_btn_gpx')}</span>
                   </button>
                   {!readOnly && (
                     <button
@@ -1583,9 +1584,10 @@ export default function LogEntryEditor({
                       className="btn secondary"
                       onClick={handleDeleteTrack}
                       style={{ width: 'auto', padding: '6px 12px', fontSize: '13px', display: 'flex', alignItems: 'center', gap: '4px', background: 'rgba(239, 68, 68, 0.1)', color: '#ef4444', borderColor: 'rgba(239, 68, 68, 0.2)' }}
+                      title={t('logs.gps_track_delete')}
                     >
                       <Trash2 size={14} />
-                      {t('logs.gps_track_delete')}
+                      <span className="hide-mobile">{t('logs.gps_track_delete')}</span>
                     </button>
                   )}
                 </div>
diff --git a/client/src/components/SettingsForm.tsx b/client/src/components/SettingsForm.tsx
index 3e6ba43..b6459a2 100644
--- a/client/src/components/SettingsForm.tsx
+++ b/client/src/components/SettingsForm.tsx
@@ -414,7 +414,7 @@ export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsF
           </div>
 
           {shareEnabled && shareLink && (
-            <div className="input-group mb-4" style={{ display: 'flex', gap: '8px', alignItems: 'center' }}>
+            <div className="input-group mb-4 copy-link-row">
               <input
                 type="text"
                 readOnly
@@ -455,7 +455,7 @@ export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsF
             {t('logs.invite_link_desc')}
           </p>
 
-          <div className="form-actions" style={{ justifyContent: 'flex-start', gap: '12px', marginBottom: '20px' }}>
+          <div className="form-actions form-actions--start" style={{ gap: '12px', marginBottom: '20px' }}>
             <button
               type="button"
               className="btn primary"
@@ -469,7 +469,7 @@ export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsF
           </div>
 
           {inviteLink && (
-            <div className="input-group mb-6" style={{ display: 'flex', gap: '8px', alignItems: 'center' }}>
+            <div className="input-group mb-6 copy-link-row">
               <input
                 type="text"
                 readOnly