/*
 * Nextcloud Office Saver - Modern Fluent UI Styling
 * Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
 */

/* ==================== CSS Variables ==================== */
:root {
  /* Fluent UI Colors */
  --color-primary: #0078d4;
  --color-primary-dark: #005a9e;
  --color-primary-light: #deecf9;
  --color-success: #107c10;
  --color-error: #d13438;
  --color-warning: #ffb900;
  --color-info: #0078d4;

  /* Neutral Colors */
  --color-neutral-dark: #323130;
  --color-neutral: #605e5c;
  --color-neutral-light: #a19f9d;
  --color-neutral-lighter: #f3f2f1;
  --color-neutral-lightest: #faf9f8;
  --color-white: #ffffff;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 24px;

  /* Border Radius */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;

  /* Shadows */
  --shadow-sm: 0 1.6px 3.6px rgba(0, 0, 0, 0.1), 0 0.3px 0.9px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 3.2px 7.2px rgba(0, 0, 0, 0.1), 0 0.6px 1.8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 6.4px 14.4px rgba(0, 0, 0, 0.12), 0 1.2px 3.6px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}

/* ==================== Base Styles ==================== */
html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  color: var(--color-neutral-dark);
  background-color: var(--color-white);
}

* {
  box-sizing: border-box;
}

/* ==================== App Container ==================== */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ==================== Compact Header ==================== */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-neutral-lightest);
  border-bottom: 1px solid var(--color-neutral-lighter);
  min-height: 48px;
  flex-shrink: 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header-logo {
  width: 28px;
  height: 28px;
}

.header-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-neutral-dark);
  margin: 0;
}

.header-actions {
  display: flex;
  gap: var(--spacing-xs);
}

/* ==================== Icon Buttons ==================== */
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-neutral);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.icon-btn:hover {
  background-color: var(--color-neutral-lighter);
  color: var(--color-neutral-dark);
}

.icon-btn:active {
  background-color: #e1dfdd;
}

.icon-btn.active {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.icon-btn svg {
  width: 16px;
  height: 16px;
}

/* ==================== Settings Panel ==================== */
.settings-panel {
  overflow: hidden;
  background-color: var(--color-neutral-lightest);
  border-bottom: 1px solid var(--color-neutral-lighter);
  transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.settings-panel.collapsed {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.settings-panel.expanded {
  max-height: 400px;
  padding: var(--spacing-lg);
}

.settings-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.settings-content h3 {
  margin: 0 0 var(--spacing-sm) 0;
  font-size: 14px;
  font-weight: 600;
}

/* ==================== Form Controls ==================== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-neutral-dark);
}

.form-input {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-neutral-light);
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.form-input::placeholder {
  color: var(--color-neutral-light);
}

/* Checkbox styling */
.checkbox-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
}

.checkbox-group label {
  font-weight: normal;
  cursor: pointer;
}

/* ==================== Buttons ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 32px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-primary-light);
}

.btn-hero {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.btn-hero:hover:not(:disabled) {
  box-shadow: var(--shadow-md);
}

.btn-danger {
  background-color: transparent;
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

.btn-danger:hover:not(:disabled) {
  background-color: #fde7e9;
}

.settings-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

/* ==================== Main Content Area ==================== */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: var(--spacing-lg);
}

/* ==================== Status Messages ==================== */
.status-message {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: var(--spacing-md);
}

.status-message.success {
  background-color: #dff6dd;
  color: var(--color-success);
}

.status-message.error {
  background-color: #fde7e9;
  color: var(--color-error);
}

.status-message.info {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.status-message.warning {
  background-color: #fff4ce;
  color: #7a6400;
}

/* ==================== Empty State ==================== */
.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--color-neutral);
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
}

.empty-state h2 {
  margin: 0 0 var(--spacing-sm) 0;
  font-size: 18px;
  color: var(--color-neutral-dark);
}

.empty-state p {
  margin: 0 0 var(--spacing-lg) 0;
  font-size: 14px;
}

/* ==================== Breadcrumb Navigation ==================== */
.breadcrumb-container {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm) 0;
  margin-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-neutral-lighter);
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.breadcrumb-link {
  color: var(--color-primary);
  text-decoration: none;
  font-size: 13px;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.breadcrumb-link:hover {
  background-color: var(--color-primary-light);
  cursor: pointer;
}

.breadcrumb-link.current {
  color: var(--color-neutral-dark);
  font-weight: 600;
  pointer-events: none;
}

.breadcrumb-separator {
  color: var(--color-neutral-light);
  font-size: 12px;
}

/* ==================== Folder Browser ==================== */
.folder-browser {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.folder-list {
  flex: 1;
  overflow-y: auto;
  border: 1px solid var(--color-neutral-lighter);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
}

.folder-item {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-neutral-lighter);
  transition: background-color var(--transition-fast);
  gap: var(--spacing-sm);
}

.folder-item:last-child {
  border-bottom: none;
}

.folder-item:hover {
  background-color: var(--color-neutral-lightest);
}

.folder-item.selected {
  background-color: var(--color-primary-light);
}

.folder-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-neutral);
}

.folder-item.selected .folder-icon {
  color: var(--color-primary);
}

.folder-name {
  flex: 1;
  font-size: 14px;
  cursor: pointer;
  padding: var(--spacing-xs) 0;
  color: var(--color-neutral-dark);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.folder-name:hover {
  color: var(--color-primary);
}

.folder-check {
  color: var(--color-primary);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.navigate-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-neutral-light);
  transition: opacity var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
  opacity: 0;
  flex-shrink: 0;
}

.folder-item:hover .navigate-btn {
  opacity: 1;
  color: var(--color-neutral);
}

.navigate-btn:hover {
  background-color: var(--color-neutral-lighter);
  color: var(--color-primary);
}

/* ==================== Selection Indicator ==================== */
.selection-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  margin-top: var(--spacing-md);
  background-color: var(--color-primary-light);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

.selection-indicator.hidden {
  display: none;
}

.selection-icon {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

.selection-text {
  font-size: 13px;
  color: var(--color-primary-dark);
}

.selection-text strong {
  font-weight: 600;
}

/* ==================== Host-Specific Options ==================== */
.host-options {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-neutral-lighter);
}

.host-options h3 {
  margin: 0 0 var(--spacing-md) 0;
  font-size: 14px;
  font-weight: 600;
}

/* Radio buttons */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.radio-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.radio-item input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
}

.radio-item label {
  font-weight: normal;
  cursor: pointer;
  font-size: 14px;
}

/* ==================== Attachments List ==================== */
.attachments-list {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: var(--color-neutral-lightest);
  border-radius: var(--radius-md);
  max-height: 150px;
  overflow-y: auto;
}

.attachments-list.hidden {
  display: none;
}

.attachment-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) 0;
}

.attachment-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
}

.attachment-item label {
  font-size: 13px;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ==================== Word Options ==================== */
.word-options-info {
  font-size: 13px;
  color: var(--color-neutral);
  margin: 0;
}

/* ==================== Save Button Area ==================== */
.save-area {
  margin-top: auto;
  padding-top: var(--spacing-lg);
}

.save-btn {
  width: 100%;
}

.save-status {
  margin-top: var(--spacing-md);
  text-align: center;
}

/* ==================== Loading State ==================== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  color: var(--color-neutral);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-neutral-lighter);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ==================== Sideload Message (Hidden) ==================== */
#sideload-msg {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  padding: var(--spacing-xl);
  text-align: center;
}

#sideload-msg h2 {
  font-size: 16px;
  color: var(--color-neutral);
}

#sideload-msg a {
  color: var(--color-primary);
}

/* ==================== Utilities ==================== */
.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==================== Scrollbar Styling ==================== */
.folder-list::-webkit-scrollbar,
.attachments-list::-webkit-scrollbar {
  width: 8px;
}

.folder-list::-webkit-scrollbar-track,
.attachments-list::-webkit-scrollbar-track {
  background: var(--color-neutral-lightest);
}

.folder-list::-webkit-scrollbar-thumb,
.attachments-list::-webkit-scrollbar-thumb {
  background: var(--color-neutral-light);
  border-radius: 4px;
}

.folder-list::-webkit-scrollbar-thumb:hover,
.attachments-list::-webkit-scrollbar-thumb:hover {
  background: var(--color-neutral);
}

/* ==================== Focus Styles (Accessibility) ==================== */
.btn:focus-visible,
.icon-btn:focus-visible,
.form-input:focus-visible,
.breadcrumb-link:focus-visible,
.folder-name:focus-visible,
.navigate-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ==================== Touch Target Size ==================== */
@media (pointer: coarse) {
  .icon-btn,
  .navigate-btn {
    min-width: 44px;
    min-height: 44px;
  }

  .folder-item {
    min-height: 44px;
  }
}