@media (min-width: 601px) {
  .brand-block {
    min-height: 44px !important;
    padding: 4px !important;
  }

  .brand-mark {
    width: 42px !important;
    height: 42px !important;
    border-radius: 14px !important;
    overflow: hidden !important;
  }

  .brand-mark img,
  .sidebar .brand-mark img {
    width: 26px !important;
    height: 26px !important;
    object-fit: contain !important;
    display: block !important;
  }

  .layout.sidebar-collapsed {
    grid-template-columns: 72px minmax(0, 1fr) !important;
  }

  .layout.sidebar-collapsed > .sidebar,
  .sidebar-collapsed .sidebar {
    width: 72px !important;
    min-width: 72px !important;
    max-width: 72px !important;
    height: 100dvh !important;
    padding: 18px 0 !important;
    align-items: center !important;
    gap: 20px !important;
    overflow: hidden !important;
  }

  .sidebar-collapsed .sidebar-top,
  .sidebar-collapsed .nav-stack,
  .sidebar-collapsed .sidebar-footer,
  .sidebar-collapsed .collapsed-utilities {
    width: 72px !important;
    min-width: 72px !important;
    max-width: 72px !important;
    justify-items: center !important;
    align-items: center !important;
  }

  .sidebar-collapsed .brand-title,
  .sidebar-collapsed .brand-block > div,
  .sidebar-collapsed .nav-section-label,
  .sidebar-collapsed .nav-copy,
  .sidebar-collapsed .expanded-utilities,
  .sidebar-collapsed .desktop-settings-edge span {
    display: none !important;
  }

  .sidebar-collapsed .brand-block,
  .sidebar-collapsed .nav-stack button,
  .sidebar-collapsed .compact-icon-btn {
    width: 72px !important;
    min-width: 72px !important;
    max-width: 72px !important;
    height: 42px !important;
    min-height: 42px !important;
    padding: 0 !important;
    margin: 0 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    border: 0 !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    transform: none !important;
  }

  .sidebar-collapsed .brand-block:hover,
  .sidebar-collapsed .nav-stack button:hover,
  .sidebar-collapsed .nav-stack button.active,
  .sidebar-collapsed .compact-icon-btn:hover {
    border: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
  }

  .sidebar-collapsed .brand-mark,
  .sidebar-collapsed .nav-icon {
    width: 24px !important;
    height: 24px !important;
    flex: 0 0 24px !important;
    padding: 0 !important;
    margin: 0 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    border: 0 !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    color: var(--text2) !important;
  }

  .sidebar-collapsed .brand-mark img,
  .sidebar-collapsed .nav-icon svg,
  .sidebar-collapsed .compact-icon-btn svg,
  .sidebar-collapsed .desktop-settings-edge svg {
    width: 17px !important;
    height: 17px !important;
    display: block !important;
  }

  .sidebar-collapsed .nav-stack {
    gap: 12px !important;
  }

  .sidebar-collapsed .nav-stack button.active .nav-icon {
    color: var(--accent-h) !important;
  }

  .sidebar-collapsed .sidebar-footer {
    position: fixed !important;
    left: 0 !important;
    right: auto !important;
    bottom: 64px !important;
    height: 42px !important;
    padding: 0 !important;
    border-top: 1px solid var(--border) !important;
    background: transparent !important;
  }

  .desktop-settings-edge {
    left: 238px !important;
    right: auto !important;
    bottom: 18px !important;
  }

  .layout.sidebar-collapsed > .desktop-settings-edge,
  .sidebar-collapsed .desktop-settings-edge {
    position: fixed !important;
    left: 0 !important;
    right: auto !important;
    bottom: 18px !important;
    z-index: 80 !important;
    width: 72px !important;
    min-width: 72px !important;
    max-width: 72px !important;
    height: 42px !important;
    min-height: 42px !important;
    padding: 0 !important;
    margin: 0 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    border: 0 !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
  }

  .settings-layer .settings-panel,
  .settings-panel {
    left: 238px !important;
    right: auto !important;
    top: auto !important;
    bottom: 74px !important;
    width: min(380px, calc(100vw - 262px)) !important;
    height: auto !important;
    min-height: 0 !important;
    max-height: calc(100dvh - 92px) !important;
    overflow: auto !important;
  }


  .sidebar-collapsed .settings-layer .settings-panel,
  .sidebar-collapsed .settings-panel {
    left: 96px !important;
    bottom: 18px !important;
    width: min(380px, calc(100vw - 120px)) !important;
    max-height: calc(100dvh - 36px) !important;
  }
}

@media (max-width: 600px) {
  .settings-panel {
    top: auto !important;
    left: 12px !important;
    right: 12px !important;
    bottom: calc(var(--mobile-bar-space, 78px) + 14px) !important;
    width: auto !important;
    max-height: calc(100dvh - var(--mobile-bar-space, 78px) - 30px) !important;
    overflow: auto !important;
  }
}

/* 2026-05-16 viewport containment and sidebar polish */
@media (min-width: 601px) {
  .layout {
    height: 100dvh !important;
    min-height: 100dvh !important;
    overflow: hidden !important;
  }

  .files-tab {
    height: min(810px, calc(100dvh - 56px)) !important;
    max-height: calc(100dvh - 56px) !important;
    overflow: hidden !important;
    padding-bottom: 0 !important;
  }

  .sidebar-collapsed .sidebar-footer {
    bottom: 92px !important;
  }

  .brand-mark img,
  .sidebar .brand-mark img {
    width: 27px !important;
    height: 27px !important;
    object-fit: contain !important;
  }
}

@media (min-width: 601px) and (max-height: 820px) {
  .files-tab {
    gap: 8px !important;
  }

  .upload-panel {
    gap: 10px !important;
    padding: 16px 18px !important;
  }

  .upload-panel h1 {
    font-size: clamp(22px, 3vw, 28px) !important;
  }

  .upload-panel p {
    margin-top: 5px !important;
  }

  .upload-zone {
    padding: 28px 18px !important;
  }

  .paste-area {
    min-height: 38px !important;
    padding: 9px 12px !important;
  }

  textarea[data-testid="text-paste"],
  .text-paste-input {
    height: clamp(124px, 21dvh, 180px) !important;
    min-height: clamp(124px, 21dvh, 180px) !important;
  }

  .text-actions-row {
    margin-top: 0 !important;
  }
}

@media (max-width: 600px) {
  .layout {
    min-height: 100dvh !important;
    overflow-x: hidden !important;
  }

  .files-tab {
    padding-bottom: calc(var(--mobile-bar-space, 78px) + 28px) !important;
  }
}

/* 2026-05-16 keep desktop app scrollable while viewport-bound */
@media (min-width: 601px) {
  .layout {
    overflow-x: hidden !important;
    overflow-y: auto !important;
  }
}

/* 2026-05-16 collapsed sidebar footer alignment */
@media (min-width: 601px) {
  .sidebar-collapsed .sidebar-footer {
    bottom: 64px !important;
    border-top: 0 !important;
  }
}

/* 2026-05-16 viewport-fixed background and mobile preview containment */
html,
body {
  min-height: 100% !important;
  background-color: var(--bg) !important;
}

body {
  background-color: var(--bg) !important;
  background-image:
    radial-gradient(circle at 18% 8%, color-mix(in srgb, var(--accent) 7%, transparent) 0 22rem, transparent 34rem),
    linear-gradient(180deg, var(--bg1), var(--bg) 30rem) !important;
  background-attachment: fixed, fixed !important;
  background-repeat: no-repeat !important;
  background-size: 100vw 100dvh, 100vw 100dvh !important;
}

#app {
  min-height: 100vh !important;
  min-height: 100dvh !important;
  background: transparent !important;
}

.layout,
.workspace,
.preview-page,
.decrypt-page,
.pw-page {
  background: transparent !important;
}

@media (max-width: 620px) {
  .preview-page {
    align-items: flex-start !important;
    padding: 16px 12px calc(16px + env(safe-area-inset-bottom)) !important;
  }

  .preview-card {
    padding: 16px !important;
  }

  .preview-frame,
  .preview-frame img,
  .preview-frame video {
    max-height: 58dvh !important;
  }

  .preview-pdf {
    min-height: 58dvh !important;
  }
}

@media (max-width: 560px) {
  .decrypt-page,
  .pw-page {
    align-items: flex-start !important;
    padding: 16px 12px calc(16px + env(safe-area-inset-bottom)) !important;
  }

  .decrypt-panel,
  .pw-panel {
    padding: 16px !important;
  }

  .decrypt-page .preview-frame,
  .decrypt-page .preview-frame img,
  .decrypt-page .preview-frame video,
  .pw-page .preview-frame,
  .pw-page .preview-frame img,
  .pw-page .preview-frame video {
    max-height: 58dvh !important;
  }
}

/* 2026-06-17 fix: upload zone layout — remove overflow clip that caused expiry menu
   controls to bleed into the drop zone area; restore visible overflow on files-tab
   so the expiry dropdown can render above the upload panel without being clipped.
   Keep upload-panel overflow:visible so inner menus don't get masked by the panel edge. */
@media (min-width: 601px) {
  .files-tab {
    overflow: visible !important;
  }

  .upload-panel {
    overflow: visible !important;
  }
}