/* Heyming OS — modal / floating panels: context menus, notifications, quick-look preview,
   shutdown dialog, file dialog, open-with dialog. */

:root {
  /* Local aliases re-route the legacy palette through brand tokens so
   * any selector that still names --os-dialogs-c* picks up the cascade.
   *
   * Phase 4 of the brand pivot re-pointed every legacy dark-theme alias
   * (#252538, #88c0d0, #6366f1, …) to the new heyming-engineering
   * tokens (paper-cream surfaces, accent-blue chrome, brand text). The
   * naming is preserved so the selectors below don't need to change. */
  --os-dialogs-c01: var(--surface-1);
  --os-dialogs-c03: color-mix(in srgb, var(--danger) 80%, transparent);
  --os-dialogs-c04: var(--accent-primary);
  --os-dialogs-c05: var(--surface-0);
  --os-dialogs-c06: var(--success);
  --os-dialogs-c09: color-mix(in srgb, var(--accent-primary) 40%, transparent);
  --os-dialogs-c10: var(--surface-1);
  --os-dialogs-c11: var(--hairline-strong);
  --os-dialogs-c12: var(--text-1);
  --os-dialogs-c13: var(--accent-primary-soft);
  --os-dialogs-c16: var(--accent-primary-soft);
  --os-dialogs-c17: var(--accent-primary);
  --os-dialogs-c18: var(--accent-primary-soft);
  --os-dialogs-c19: var(--text-3);
  --os-dialogs-c20: color-mix(in srgb, var(--danger) 30%, transparent);
  --os-dialogs-c21: var(--accent-primary);
  --os-dialogs-c22: var(--hairline-strong);
  --os-dialogs-c23: var(--surface-2);
  --os-dialogs-c24: var(--hairline-strong);
  --os-dialogs-c25: var(--accent-primary);
  --os-dialogs-c26: var(--text-3);
  --os-dialogs-c27: var(--danger);
  --os-dialogs-c28: var(--text-1);
  --os-dialogs-c29: var(--text-2);
  --os-dialogs-c30: var(--accent-primary-soft);
  --os-dialogs-c31: color-mix(in srgb, var(--accent-primary) 14%, transparent);
  --os-dialogs-c32: color-mix(in srgb, var(--accent-primary) 22%, transparent);
  --os-dialogs-c33: var(--text-3);
  --os-dialogs-c34: var(--success);
  --os-dialogs-c35: color-mix(in srgb, var(--success) 85%, var(--pure-black));
  --os-dialogs-c36: var(--surface-1);
  --os-dialogs-c37: var(--text-2);
  --os-dialogs-c38: var(--accent-primary-soft);
  --os-dialogs-c39: var(--accent-primary);
  --os-dialogs-c40: var(--text-3);
}

/* ============================================================
   Quick Look Preview
   ============================================================ */

.quick-look-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 48px; /* Above taskbar */
  background: var(--scrim);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.quick-look-overlay.show {
  opacity: 1;
}

.quick-look-container {
  background: var(--os-dialogs-c01, #ffffff);
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline-strong);
  box-shadow: 0 4px 16px color-mix(in srgb, var(--pure-black) 16%, transparent);
  max-width: 80vw;
  max-height: 80vh;
  min-width: 400px;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.9);
  transition: transform 0.2s ease;
}

.quick-look-overlay.show .quick-look-container {
  transform: scale(1);
}

.quick-look-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--hairline);
}

.quick-look-title {
  font-weight: 600;
  color: var(--text-1);
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.quick-look-close {
  background: var(--surface-1);
  border: 1px solid var(--hairline-strong);
  color: var(--text-1);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.2s;
}

.quick-look-close:hover {
  background: var(--os-dialogs-c03, rgba(255, 80, 80, 0.8));
}

.quick-look-close:focus-visible,
.quick-look-open:focus-visible {
  outline: 2px solid var(--os-dialogs-c04, rgba(90, 160, 255, 0.95));
  outline-offset: 2px;
}

.quick-look-content {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--os-dialogs-c05, #0d0d1a);
}

.quick-look-content img {
  max-width: 100%;
  max-height: 60vh;
  object-fit: contain;
  border-radius: 4px;
}

.quick-look-content video {
  max-width: 100%;
  max-height: 60vh;
  border-radius: 4px;
}

.quick-look-content audio {
  width: 100%;
  max-width: 400px;
}

.quick-look-content.audio-preview {
  background: var(--surface-1);
}

.quick-look-content.text-preview {
  align-items: flex-start;
  justify-content: flex-start;
}

.quick-look-content pre {
  margin: 0;
  padding: 16px;
  font-family: 'SF Mono', Monaco, Consolas, monospace;
  font-size: 12px;
  color: var(--os-dialogs-c06, #a0e0a0);
  background: var(--os-dialogs-c05, #0d0d1a);
  border-radius: 4px;
  overflow: auto;
  max-width: 100%;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.quick-look-content .no-preview {
  text-align: center;
  color: var(--text-2);
}

.quick-look-content .no-preview .icon {
  font-size: 64px;
  display: block;
  margin-bottom: 16px;
}

.quick-look-content .no-preview .mime {
  font-size: 12px;
  color: var(--text-3);
  font-family: monospace;
}

.quick-look-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--surface-2);
  border-top: 1px solid var(--hairline);
}

.quick-look-footer-left {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.quick-look-hint {
  font-size: 11px;
  color: var(--text-3);
}

.quick-look-info {
  font-size: 12px;
  color: var(--text-2);
  font-family: monospace;
}

.quick-look-open {
  background: var(--accent-primary-bg);
  border: none;
  color: var(--text-on-accent);
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: transform 0.1s, box-shadow 0.2s;
}

.quick-look-open:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--os-dialogs-c09, rgba(74, 144, 217, 0.4));
}

.quick-look-open:active {
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .quick-look-overlay {
    transition: none;
  }

  .quick-look-container {
    transition: none;
    transform: none;
  }

  .quick-look-overlay.show .quick-look-container {
    transform: none;
  }

  .quick-look-open {
    transition: none;
  }

  .quick-look-open:hover {
    transform: none;
  }
}

/* ============================================================
   Context Menu  (basic rules; elaborate rules below override.)
   ============================================================ */

.context-menu {
  position: absolute;
  background: var(--os-dialogs-c10, #2d3748);
  border: 1px solid var(--os-dialogs-c11, #4a5568);
  border-radius: 6px;
  box-shadow: 0 4px 12px color-mix(in srgb, var(--pure-black) 30%, transparent);
  z-index: 1000;
  min-width: 160px;
  padding: 4px 0;
}

.context-menu-item {
  padding: 8px 16px;
  color: var(--os-dialogs-c12, #e2e8f0);
  cursor: pointer;
  font-size: 12px;
  transition: background-color 0.2s ease;
}

.context-menu-item:hover {
  background: var(--os-dialogs-c13, #3182ce);
}

.context-menu-separator {
  height: 1px;
  background: var(--os-dialogs-c11, #4a5568);
  margin: 4px 0;
}

/* ============================================================
   Notifications — stacked tray (multiple toasts don't obscure each other)
   ============================================================ */

.os-notification-region {
  position: absolute;
  top: 20px;
  right: 20px;
  left: auto;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  max-width: min(320px, calc(100vw - 40px));
  pointer-events: none;
  box-sizing: border-box;
}

.os-notification-region .notification {
  position: relative;
  top: auto;
  right: auto;
  pointer-events: auto;
  flex-shrink: 0;
}

.notification {
  background: var(--os-dialogs-c10, #2d3748);
  border: 1px solid var(--os-dialogs-c11, #4a5568);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--os-dialogs-c12, #e2e8f0);
  font-size: 12px;
  line-height: 1.35;
  box-shadow: 0 4px 12px color-mix(in srgb, var(--pure-black) 30%, transparent);
  max-width: 300px;
  animation: slideInRight 0.3s ease-out;
}

/* Legacy: if toasts mount directly on #os-desktop (no #os-notification-region), keep corner anchoring */
#os-desktop > .notification {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 3000;
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ============================================================
   Context Menu (elaborate variant; overrides the basic rules above)
   ============================================================ */

.context-menu {
  position: absolute;
  min-width: 200px;
  background: var(--surface-1);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 16px color-mix(in srgb, var(--pure-black) 12%, transparent);
  z-index: 10000;
  padding: 6px 0;
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.context-menu.show {
  opacity: 1;
  transform: scale(1);
}

.context-menu.hidden {
  pointer-events: none;
}

.context-menu-item {
  padding: 8px 16px;
  color: var(--os-dialogs-c12, #e2e8f0);
  cursor: pointer;
  font-size: 14px;
  transition: background 0.1s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.context-menu-item:hover:not(.disabled) {
  background: var(--os-dialogs-c16, rgba(66, 153, 225, 0.3));
}

.context-menu-item:focus-visible {
  outline: 2px solid var(--os-dialogs-c17, #63b3ed);
  outline-offset: -2px;
  background: var(--os-dialogs-c18, rgba(66, 153, 225, 0.25));
}

.context-menu-item.disabled {
  opacity: 0.4;
  pointer-events: none;
  cursor: default;
}

.context-menu-divider {
  height: 1px;
  background: var(--os-dialogs-c11, #4a5568);
  margin: 6px 0;
}

.context-menu-header {
  padding: 8px 16px;
  color: var(--os-dialogs-c19, #6e6e6e);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-bottom: 1px solid var(--os-dialogs-c11, #c8c8c0);
  background: var(--surface-2);
}

/* ============================================================
   Shutdown button + dialog
   ============================================================ */

.shutdown-btn {
  position: relative;
  overflow: hidden;
}

.shutdown-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: var(--os-dialogs-c20, rgba(255, 0, 0, 0.3));
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.3s ease;
}

.shutdown-btn:hover::before {
  width: 100%;
  height: 100%;
}

/* Shutdown Dialog Animations — duplicates of base.css fadeIn/fadeOut; preserved
   from the source split so adding/removing the partial doesn't require cross-file edits. */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.9);
  }
}

#shutdown-dialog {
  background: var(--scrim);
}

#shutdown-dialog .shutdown-dialog-panel {
  animation: slideUp 0.3s ease-out;
  box-shadow: 0 4px 16px color-mix(in srgb, var(--pure-black) 16%, transparent);
}

#shutdown-dialog button:focus-visible {
  outline: 2px solid var(--os-dialogs-c21, rgba(96, 165, 250, 0.95));
  outline-offset: 2px;
}

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* ============================================================
   File Dialog
   ============================================================ */

.file-dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--scrim);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
}

.file-dialog-overlay.hidden {
  display: none;
}

.file-dialog {
  background: var(--surface-1);
  border: 1px solid var(--os-dialogs-c22, var(--hairline-strong));
  border-radius: var(--radius-lg);
  width: 600px;
  max-width: 90vw;
  max-height: 80vh;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  grid-template-columns: 140px 1fr;
  grid-template-areas:
    'header header'
    'nav nav'
    'sidebar content'
    'footer footer';
  overflow: hidden;
  box-shadow: 0 4px 16px color-mix(in srgb, var(--pure-black) 16%, transparent);
  animation: dialogSlideIn 0.2s ease-out;
}

@keyframes dialogSlideIn {
  from {
    transform: scale(0.95) translateY(-10px);
    opacity: 0;
  }
  to {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
}

.file-dialog-header {
  grid-area: header;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--os-dialogs-c23, #252538);
  border-bottom: 1px solid var(--os-dialogs-c24, #3d3d5c);
}

.file-dialog-header span {
  font-weight: 600;
  color: var(--os-dialogs-c25, #88c0d0);
}

.file-dialog-close {
  background: none;
  border: none;
  color: var(--os-dialogs-c26, #888);
  font-size: 20px;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}

.file-dialog-close:hover {
  color: var(--os-dialogs-c27, #ef4444);
}

.file-dialog-nav {
  grid-area: nav;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--os-dialogs-c23, #252538);
  border-bottom: 1px solid var(--os-dialogs-c24, #3d3d5c);
}

.file-dialog-nav button {
  background: var(--os-dialogs-c24, #3d3d5c);
  border: 1px solid var(--os-dialogs-c22, #4d4d6c);
  border-radius: 4px;
  color: var(--os-dialogs-c28, #e0e0e0);
  padding: 4px 10px;
  cursor: pointer;
  font-size: 14px;
}

.file-dialog-nav button:hover {
  background: var(--os-dialogs-c22, #4d4d6c);
}

.file-dialog-path {
  flex: 1;
  font-family: 'Consolas', monospace;
  font-size: 12px;
  color: var(--os-dialogs-c25, #88c0d0);
  padding: 4px 8px;
  background: var(--os-dialogs-c01, #1a1a2e);
  border-radius: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-dialog-sidebar {
  grid-area: sidebar;
  background: var(--os-dialogs-c23, #252538);
  border-right: 1px solid var(--os-dialogs-c24, #3d3d5c);
  padding: 8px 0;
  overflow-y: auto;
}

.file-dialog-sidebar .sidebar-item {
  padding: 8px 12px;
  font-size: 12px;
  color: var(--os-dialogs-c29, #a0a0a0);
  cursor: pointer;
  transition: background 0.1s;
}

.file-dialog-sidebar .sidebar-item:hover {
  background: var(--os-dialogs-c30, rgba(136, 192, 208, 0.1));
}

.file-dialog-sidebar .sidebar-item.active {
  background: var(--os-dialogs-c31, rgba(136, 192, 208, 0.2));
  color: var(--os-dialogs-c25, #88c0d0);
}

.file-dialog-content {
  grid-area: content;
  overflow-y: auto;
  padding: 8px;
  min-height: 200px;
  max-height: 300px;
}

.file-dialog-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.file-dialog-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.1s;
}

.file-dialog-item:hover {
  background: var(--os-dialogs-c30, rgba(136, 192, 208, 0.1));
}

.file-dialog-item.selected {
  background: var(--os-dialogs-c32, rgba(136, 192, 208, 0.25));
  outline: 1px solid var(--os-dialogs-c25, #88c0d0);
}

.file-dialog-item .icon {
  font-size: 18px;
}

.file-dialog-item .name {
  font-size: 13px;
  color: var(--os-dialogs-c28, #e0e0e0);
}

.file-dialog-content .loading,
.file-dialog-content .empty,
.file-dialog-content .error {
  text-align: center;
  padding: 40px 20px;
  color: var(--os-dialogs-c33, #666);
  font-size: 13px;
}

.file-dialog-content .error {
  color: var(--os-dialogs-c27, #ef4444);
}

.file-dialog-footer {
  grid-area: footer;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--os-dialogs-c23, #252538);
  border-top: 1px solid var(--os-dialogs-c24, #3d3d5c);
}

.file-dialog-footer input {
  flex: 1;
  padding: 8px 12px;
  background: var(--os-dialogs-c01, #1a1a2e);
  border: 1px solid var(--os-dialogs-c22, #4d4d6c);
  border-radius: 6px;
  color: var(--os-dialogs-c28, #e0e0e0);
  font-size: 13px;
}

.file-dialog-footer input:focus {
  outline: none;
  border-color: var(--os-dialogs-c25, #88c0d0);
}

.file-dialog-buttons {
  display: flex;
  gap: 8px;
}

.file-dialog-btn {
  padding: 8px 16px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
}

.file-dialog-btn.cancel {
  background: var(--os-dialogs-c24, #3d3d5c);
  color: var(--os-dialogs-c28, #e0e0e0);
}

.file-dialog-btn.cancel:hover {
  background: var(--os-dialogs-c22, #4d4d6c);
}

.file-dialog-btn.confirm {
  background: var(--os-dialogs-c34, #10b981);
  color: white;
}

.file-dialog-btn.confirm:hover {
  background: var(--os-dialogs-c35, #059669);
}

/* ============================================================
   "Open With" Dialog
   ============================================================ */

.open-with-overlay {
  position: fixed;
  inset: 0;
  z-index: 400;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--scrim);
  animation: fadeIn 0.15s ease-out;
}

.open-with-panel {
  background: var(--os-dialogs-c36, #ffffff);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  width: 340px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 16px color-mix(in srgb, var(--pure-black) 16%, transparent);
  overflow: hidden;
}

.open-with-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 20px 20px 14px;
  border-bottom: 1px solid var(--hairline);
}

.open-with-file-icon {
  font-size: 32px;
  line-height: 1;
  flex-shrink: 0;
}

.open-with-title {
  color: var(--os-dialogs-c12, #e2e8f0);
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 4px;
  word-break: break-word;
}

.open-with-subtitle {
  color: var(--os-dialogs-c37, #64748b);
  font-size: 12px;
  margin: 0;
  line-height: 1.4;
}

.open-with-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.open-with-app-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--os-dialogs-c12, #e2e8f0);
  cursor: pointer;
  font-size: 14px;
  text-align: left;
  transition: background 0.15s;
}

.open-with-app-btn:hover {
  background: var(--os-dialogs-c38, rgba(99, 102, 241, 0.15));
}

.open-with-app-btn:focus-visible {
  outline: 2px solid var(--os-dialogs-c39, #6366f1);
  outline-offset: -2px;
}

.open-with-app-icon {
  font-size: 22px;
  width: 28px;
  text-align: center;
  flex-shrink: 0;
}

.open-with-app-name {
  flex: 1;
  min-width: 0;
}

.open-with-footer {
  padding: 10px 16px;
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: flex-end;
}

.open-with-cancel-btn {
  padding: 6px 16px;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius);
  background: var(--surface-1);
  color: var(--text-2);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.open-with-cancel-btn:hover {
  background: var(--surface-2);
  color: var(--text-1);
}