styles.css

/**
 * Lockdown Plugin Styles
 * Architecture: BEM (Block Element Modifier)
 * 
 * Naming Convention:
 * - Block:    .ld-block
 * - Element:  .ld-block__element
 * - Modifier: .ld-block--modifier or .ld-block__element--modifier
 * 
 * Prefix: "ld-" (lockdown) to avoid conflicts with Obsidian and other plugins
 * 
 * Organization:
 * 1. CSS Variables (Design Tokens)
 * 2. Global Utilities
 * 3. Components (BEM Blocks)
 *    - Modal
 *    - Overlay
 *    - File Explorer
 *    - Password Strength
 *    - Manager
 * 4. Animations
 * 5. Obsidian-specific Overrides
 */

/* ========================================================================
   1. CSS VARIABLES (DESIGN TOKENS)
   ======================================================================== */

:root {
	/* Spacing Scale */
	--ld-space-xs: 4px;
	--ld-space-sm: 8px;
	--ld-space-md: 12px;
	--ld-space-lg: 16px;
	--ld-space-xl: 20px;
	--ld-space-2xl: 24px;
	--ld-space-3xl: 32px;
	--ld-space-4xl: 40px;
	--ld-space-5xl: 60px;

	/* Border Radius Scale */
	--ld-radius-sm: 4px;
	--ld-radius-md: 6px;
	--ld-radius-lg: 8px;

	/* Typography Scale */
	--ld-text-xs: 12px;
	--ld-text-sm: 13px;
	--ld-text-base: 14px;
	--ld-text-md: 15px;
	--ld-text-lg: 16px;
	--ld-text-xl: 24px;
	--ld-text-2xl: 32px;
	--ld-text-3xl: 80px;
	--ld-text-4xl: 120px;

	/* Font Weights */
	--ld-weight-normal: 400;
	--ld-weight-medium: 500;
	--ld-weight-semibold: 600;

	/* Transitions */
	--ld-transition-fast: 0.15s ease;
	--ld-transition-base: 0.2s ease;
	--ld-transition-slow: 0.3s ease;
	--ld-transition-slower: 0.4s ease;

	/* Shadows */
	--ld-shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.15);
	--ld-shadow-md: 0 2px 8px rgba(0, 0, 0, 0.15);
	--ld-shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.15);
	--ld-shadow-xl: 0 4px 16px rgba(0, 0, 0, 0.2);

	/* Z-index Scale */
	--ld-z-overlay: 10;
	--ld-z-modal: 100;

	/* Animation Durations */
	--ld-anim-glow: 2s;
	--ld-anim-pulse: 2s;
	--ld-anim-bounce: 2s;

	/* Component Specific */
	--ld-modal-min-width: 400px;
	--ld-modal-min-width-lg: 450px;
	--ld-manager-min-width: 600px;
	--ld-manager-max-width: 800px;
	--ld-list-max-height: 450px;
	--ld-overlay-opacity: 0.98;
}

/* ========================================================================
   2. GLOBAL UTILITIES
   ======================================================================== */

/**
 * Utility: Locked State
 * Applied to elements that should appear locked and non-interactive
 */
.ld-locked {
	opacity: 0.7;
	pointer-events: none;
}

/**
 * Utility: Status Bar Item
 * Applied to status bar indicators
 */
.ld-status-bar {
	cursor: pointer;
	padding: 2px var(--ld-space-sm);
	border-radius: var(--ld-radius-sm);
	transition: background-color var(--ld-transition-base);
}

.ld-status-bar:hover {
	background-color: var(--background-modifier-hover);
}

/* ========================================================================
   3. COMPONENTS (BEM BLOCKS)
   ======================================================================== */

/* ------------------------------------------------------------------------
   BLOCK: Modal
   Base component for all modals in the plugin
   ------------------------------------------------------------------------ */

.ld-modal {
	padding: var(--ld-space-2xl);
	min-width: var(--ld-modal-min-width);
}

/* Modal Modifier: Password */
.ld-modal--password {
	min-width: var(--ld-modal-min-width-lg);
}

/* Modal Modifier: Manager */
.ld-modal--manager {
	min-width: var(--ld-manager-min-width);
	max-width: var(--ld-manager-max-width);
}

/* Modal Element: Title Container */
.ld-modal__title-container {
	display: flex;
	align-items: center;
	gap: var(--ld-space-md);
	margin-bottom: var(--ld-space-xl);
	padding-bottom: var(--ld-space-lg);
	border-bottom: 2px solid var(--background-modifier-border);
}

/* Modal Element: Icon */
.ld-modal__icon {
	font-size: var(--ld-text-2xl);
	line-height: 1;
	animation: ld-icon-glow var(--ld-anim-glow) ease-in-out infinite;
}

/* Modal Element: Title */
.ld-modal__title {
	margin: 0;
	font-size: var(--ld-text-xl);
	font-weight: var(--ld-weight-semibold);
	color: var(--text-normal);
	letter-spacing: -0.02em;
}

/* Modal Element: Message */
.ld-modal__message {
	margin: 0 0 var(--ld-space-2xl) 0;
	font-size: var(--ld-text-md);
	line-height: 1.5;
	color: var(--text-muted);
}

/* Modal Element: Button Container */
.ld-modal__button-container {
	display: flex;
	gap: var(--ld-space-md);
	justify-content: flex-end;
	margin-top: var(--ld-space-2xl);
	padding-top: var(--ld-space-xl);
	border-top: 1px solid var(--background-modifier-border);
}

/* ------------------------------------------------------------------------
   BLOCK: Button
   Reusable button component used in modals and overlays
   ------------------------------------------------------------------------ */

.ld-button {
	padding: 10px var(--ld-space-2xl);
	border: none;
	border-radius: var(--ld-radius-lg);
	font-size: var(--ld-text-base);
	font-weight: var(--ld-weight-semibold);
	cursor: pointer;
	transition: all var(--ld-transition-base);
	letter-spacing: 0.02em;
}

.ld-button:hover {
	transform: translateY(-1px);
	box-shadow: var(--ld-shadow-lg);
}

.ld-button:active {
	transform: translateY(0);
}

/* Button Modifier: Primary */
.ld-button--primary {
	background-color: var(--interactive-accent);
	color: var(--text-on-accent);
}

.ld-button--primary:hover {
	background-color: var(--interactive-accent-hover);
	box-shadow: 0 4px 16px rgba(var(--interactive-accent-rgb), 0.3);
}

/* Button Modifier: Secondary */
.ld-button--secondary {
	background-color: var(--background-secondary);
	color: var(--text-normal);
	border: 2px solid var(--background-modifier-border);
}

.ld-button--secondary:hover {
	background-color: var(--background-modifier-hover);
	border-color: var(--background-modifier-border-hover);
}

/* Button Modifier: Warning */
.ld-button--warning {
	background-color: #e74c3c;
	color: white;
}

.ld-button--warning:hover {
	background-color: #c0392b;
	box-shadow: 0 4px 16px rgba(231, 76, 60, 0.3);
}

/* ------------------------------------------------------------------------
   BLOCK: Input
   Form input components (text, password, search)
   ------------------------------------------------------------------------ */

.ld-input-container {
	margin-bottom: var(--ld-space-xl);
}

.ld-input__label {
	display: block;
	margin-bottom: var(--ld-space-sm);
	font-size: var(--ld-text-base);
	font-weight: var(--ld-weight-medium);
	color: var(--text-normal);
	letter-spacing: 0.01em;
}

.ld-input {
	width: 100%;
	padding: var(--ld-space-md) var(--ld-space-lg);
	border: 2px solid var(--background-modifier-border);
	border-radius: var(--ld-radius-lg);
	background-color: var(--background-primary);
	color: var(--text-normal);
	font-size: var(--ld-text-md);
	font-family: inherit;
	transition: all var(--ld-transition-base);
}

.ld-input:hover {
	border-color: var(--background-modifier-border-hover);
}

.ld-input:focus {
	outline: none;
	border-color: var(--interactive-accent);
	box-shadow: 0 0 0 3px rgba(var(--interactive-accent-rgb), 0.1);
	background-color: var(--background-primary-alt);
}

.ld-input::placeholder {
	color: var(--text-faint);
	opacity: 0.6;
}

/* Input Modifier: Password */
.ld-input--password {
	/* Specific password input styles if needed */
}

/* Input Modifier: Search */
.ld-input--search {
	/* Specific search input styles if needed */
}

/* ------------------------------------------------------------------------
   BLOCK: Overlay
   Full-screen overlay shown when a note is locked
   ------------------------------------------------------------------------ */

.ld-overlay {
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	width: 100%;
	height: 100%;
	background-color: var(--background-primary);
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	z-index: var(--ld-z-overlay);
	gap: var(--ld-space-2xl);
	padding: var(--ld-space-4xl);
	animation: ld-fade-in var(--ld-transition-slow) ease-in-out;
	box-sizing: border-box;
	overflow: hidden;
	pointer-events: auto;
	isolation: isolate;
	opacity: var(--ld-overlay-opacity);
	contain: layout style paint;
}

/* Overlay Element: Icon */
.ld-overlay__icon {
	font-size: var(--ld-text-4xl);
	line-height: 1;
	opacity: 0.9;
	animation: ld-pulse var(--ld-anim-pulse) ease-in-out infinite;
	filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

/* Overlay Element: Message */
.ld-overlay__message {
	font-size: var(--ld-text-xl);
	font-weight: var(--ld-weight-semibold);
	color: var(--text-normal);
	text-align: center;
	margin: 0;
	opacity: 0.95;
	letter-spacing: 0.5px;
}

/* Overlay Element: Button */
.ld-overlay__button {
	padding: var(--ld-space-md) var(--ld-space-3xl);
	font-size: var(--ld-text-lg);
	font-weight: var(--ld-weight-semibold);
	border-radius: var(--ld-radius-lg);
	border: none;
	background-color: var(--interactive-accent);
	color: var(--text-on-accent);
	cursor: pointer;
	transition: all var(--ld-transition-base);
	box-shadow: var(--ld-shadow-md);
}

.ld-overlay__button:hover {
	background-color: var(--interactive-accent-hover);
	transform: translateY(-2px);
	box-shadow: var(--ld-shadow-xl);
}

.ld-overlay__button:active {
	transform: translateY(0);
	box-shadow: var(--ld-shadow-sm);
}

/* ------------------------------------------------------------------------
   BLOCK: Overlay Container
   Container styles for overlay positioning
   ------------------------------------------------------------------------ */

.ld-overlay-container {
	position: relative;
}

.ld-overlay-container-isolated {
	isolation: isolate;
	will-change: auto;
}

/* ------------------------------------------------------------------------
   BLOCK: File Explorer Indicators
   Lock icons shown in the file explorer sidebar
   ------------------------------------------------------------------------ */

.ld-file-explorer-indicator {
	margin-left: var(--ld-space-xs);
	opacity: 0.7;
	font-size: 0.9em;
	vertical-align: middle;
	cursor: help;
	display: inline-block;
	pointer-events: none;
	will-change: opacity;
	transition: opacity var(--ld-transition-fast);
	position: relative;
	z-index: 0;
	background: transparent !important;
	background-color: transparent !important;
	mix-blend-mode: normal;
	contain: none;
}

.ld-file-explorer-indicator:hover {
	opacity: 1;
	pointer-events: auto;
}

/* Indicator Modifier: Folder */
.ld-file-explorer-indicator--folder {
	opacity: 0.8;
}

/* Indicator Modifier: Encrypted */
.ld-file-explorer-indicator--encrypted {
	opacity: 1;
}

/* Ensure indicators don't affect sidebar background */
.nav-files-container .ld-file-explorer-indicator,
.nav-folder-title .ld-file-explorer-indicator,
.nav-file-title .ld-file-explorer-indicator {
	background: transparent !important;
	background-color: transparent !important;
	mix-blend-mode: normal;
	contain: none;
	pointer-events: none;
}

.nav-folder-title .ld-file-explorer-indicator--folder {
	opacity: 0.8;
}

/* ------------------------------------------------------------------------
   BLOCK: Empty State
   Displayed when there are no items to show
   ------------------------------------------------------------------------ */

.ld-empty-state {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	padding: var(--ld-space-5xl) var(--ld-space-4xl);
	text-align: center;
}

.ld-empty-state__icon {
	font-size: var(--ld-text-3xl);
	line-height: 1;
	margin-bottom: var(--ld-space-xl);
	opacity: 0.5;
	animation: ld-bounce var(--ld-anim-bounce) ease-in-out infinite;
}

.ld-empty-state__message {
	margin: 0;
	font-size: var(--ld-text-lg);
	color: var(--text-muted);
}

/* ------------------------------------------------------------------------
   BLOCK: Manager
   Locked files manager modal components
   ------------------------------------------------------------------------ */

/* Manager Element: Tabs Container */
.ld-manager__tabs {
	display: flex;
	gap: var(--ld-space-sm);
	margin-bottom: var(--ld-space-xl);
	padding: var(--ld-space-xs);
	background-color: var(--background-secondary);
	border-radius: var(--ld-radius-lg);
}

/* Manager Element: Tab */
.ld-manager__tab {
	flex: 1;
	padding: 10px var(--ld-space-lg);
	border: none;
	border-radius: var(--ld-radius-md);
	background-color: transparent;
	color: var(--text-muted);
	cursor: pointer;
	transition: all var(--ld-transition-base);
	font-weight: var(--ld-weight-medium);
	font-size: var(--ld-text-base);
}

.ld-manager__tab:hover {
	background-color: var(--background-modifier-hover);
	color: var(--text-normal);
}

/* Manager Tab Modifier: Active */
.ld-manager__tab--active {
	background-color: var(--interactive-accent);
	color: var(--text-on-accent);
	box-shadow: var(--ld-shadow-md);
}

/* Manager Element: Search Container */
.ld-manager__search-container {
	margin-bottom: var(--ld-space-xl);
	display: flex;
	gap: var(--ld-space-sm);
}

/* Manager Element: Files List */
.ld-manager__files-list {
	max-height: var(--ld-list-max-height);
	overflow-y: auto;
	margin-bottom: var(--ld-space-xl);
	border-radius: var(--ld-radius-lg);
	border: 1px solid var(--background-modifier-border);
}

/* Custom scrollbar for files list */
.ld-manager__files-list::-webkit-scrollbar {
	width: var(--ld-space-sm);
}

.ld-manager__files-list::-webkit-scrollbar-track {
	background: var(--background-secondary);
	border-radius: var(--ld-radius-sm);
}

.ld-manager__files-list::-webkit-scrollbar-thumb {
	background: var(--background-modifier-border);
	border-radius: var(--ld-radius-sm);
}

.ld-manager__files-list::-webkit-scrollbar-thumb:hover {
	background: var(--background-modifier-border-hover);
}

/* Manager Element: Bulk Actions */
.ld-manager__bulk-actions {
	margin-top: var(--ld-space-xl);
	padding-top: var(--ld-space-xl);
	border-top: 2px solid var(--background-modifier-border);
	display: flex;
	justify-content: flex-end;
}

/* ------------------------------------------------------------------------
   BLOCK: File Item
   Individual file item in the manager list
   ------------------------------------------------------------------------ */

.ld-file-item {
	display: flex;
	align-items: center;
	padding: var(--ld-space-lg);
	border-bottom: 1px solid var(--background-modifier-border);
	gap: var(--ld-space-lg);
	transition: all var(--ld-transition-base);
}

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

.ld-file-item:hover {
	background-color: var(--background-modifier-hover);
}

/* File Item Element: Name */
.ld-file-item__name {
	font-weight: var(--ld-weight-semibold);
	flex: 1;
	min-width: 0;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	color: var(--text-normal);
}

/* File Item Element: Path */
.ld-file-item__path {
	font-size: var(--ld-text-xs);
	color: var(--text-muted);
	flex: 2;
	min-width: 0;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	font-family: var(--font-monospace);
	opacity: 0.8;
}

/* File Item Element: Status */
.ld-file-item__status {
	display: flex;
	gap: 6px;
	align-items: center;
	font-size: 1.3em;
}

/* File Item Element: Actions */
.ld-file-item__actions {
	display: flex;
	gap: var(--ld-space-sm);
}

.ld-file-item__actions button {
	padding: 6px var(--ld-space-lg);
	font-size: var(--ld-text-sm);
	border-radius: var(--ld-radius-md);
	border: 1px solid var(--background-modifier-border);
	background-color: var(--background-secondary);
	color: var(--text-normal);
	cursor: pointer;
	transition: all var(--ld-transition-base);
	font-weight: var(--ld-weight-medium);
}

.ld-file-item__actions button:hover {
	background-color: var(--background-modifier-hover);
	border-color: var(--background-modifier-border-hover);
	transform: translateY(-1px);
	box-shadow: var(--ld-shadow-md);
}

.ld-file-item__actions button.mod-cta {
	background-color: var(--interactive-accent);
	color: var(--text-on-accent);
	border-color: var(--interactive-accent);
}

.ld-file-item__actions button.mod-cta:hover {
	background-color: var(--interactive-accent-hover);
	box-shadow: 0 2px 12px rgba(var(--interactive-accent-rgb), 0.3);
}

/* ------------------------------------------------------------------------
   BLOCK: Password Strength
   Password strength indicator component
   ------------------------------------------------------------------------ */

.ld-password-strength {
	margin-top: var(--ld-space-md);
}

/* Password Strength Element: Bar Container */
.ld-password-strength__bar-container {
	height: 6px;
	background-color: var(--background-modifier-border);
	border-radius: 3px;
	overflow: hidden;
	margin-bottom: var(--ld-space-sm);
}

/* Password Strength Element: Meter */
.ld-password-strength__meter {
	height: 100%;
	border-radius: 3px;
	transition: width var(--ld-transition-slower) ease, 
	            background-color var(--ld-transition-slow) ease;
	width: 0%;
	box-shadow: var(--ld-shadow-md);
}

/* Meter Modifier: Weak */
.ld-password-strength__meter--weak {
	background: linear-gradient(90deg, #e74c3c 0%, #c0392b 100%);
	box-shadow: 0 0 12px rgba(231, 76, 60, 0.4);
}

/* Meter Modifier: Fair */
.ld-password-strength__meter--fair {
	background: linear-gradient(90deg, #f39c12 0%, #e67e22 100%);
	box-shadow: 0 0 12px rgba(243, 156, 18, 0.4);
}

/* Meter Modifier: Good */
.ld-password-strength__meter--good {
	background: linear-gradient(90deg, #3498db 0%, #2980b9 100%);
	box-shadow: 0 0 12px rgba(52, 152, 219, 0.4);
}

/* Meter Modifier: Strong */
.ld-password-strength__meter--strong {
	background: linear-gradient(90deg, #2ecc71 0%, #27ae60 100%);
	box-shadow: 0 0 12px rgba(46, 204, 113, 0.4);
}

/* Password Strength Element: Text */
.ld-password-strength__text {
	font-size: var(--ld-text-sm);
	font-weight: var(--ld-weight-medium);
	margin-top: var(--ld-space-xs);
	transition: color var(--ld-transition-slow);
	letter-spacing: 0.01em;
}

/* Text Modifier: Weak */
.ld-password-strength__text--weak {
	color: #e74c3c;
}

/* Text Modifier: Fair */
.ld-password-strength__text--fair {
	color: #f39c12;
}

/* Text Modifier: Good */
.ld-password-strength__text--good {
	color: #3498db;
}

/* Text Modifier: Strong */
.ld-password-strength__text--strong {
	color: #2ecc71;
}

/* ========================================================================
   4. ANIMATIONS
   ======================================================================== */

@keyframes ld-icon-glow {
	0%, 100% {
		opacity: 1;
		filter: drop-shadow(0 0 4px rgba(128, 128, 128, 0.3));
	}
	50% {
		opacity: 0.85;
		filter: drop-shadow(0 0 8px rgba(128, 128, 128, 0.5));
	}
}

@keyframes ld-fade-in {
	from {
		opacity: 0;
	}
	to {
		opacity: var(--ld-overlay-opacity);
	}
}

@keyframes ld-pulse {
	0%, 100% {
		transform: scale(1);
		opacity: 0.9;
	}
	50% {
		transform: scale(1.05);
		opacity: 1;
	}
}

@keyframes ld-bounce {
	0%, 100% {
		transform: translateY(0);
	}
	50% {
		transform: translateY(-10px);
	}
}

/* ========================================================================
   5. OBSIDIAN-SPECIFIC OVERRIDES
   Protection against overlay bleed into sidebar and UI elements
   ======================================================================== */

.workspace-split.mod-left-split,
.workspace-split.mod-right-split,
.workspace-ribbon,
.status-bar,
.notice-container,
.modal-container,
.prompt-container,
.popover {
	isolation: isolate;
	z-index: auto;
	transform: none;
	will-change: auto;
}

.nav-files-container,
.workspace-leaf-content,
.workspace-tab-header-container {
	isolation: isolate;
	background-color: var(--background-primary);
	transform: translateZ(0);
	-webkit-transform: translateZ(0);
}

/* Prevent pseudo-elements from creating overlays */
.nav-files-container::before,
.nav-files-container::after,
.nav-folder-title::before,
.nav-folder-title::after,
.nav-file-title::before,
.nav-file-title::after {
	content: none !important;
}

/* ========================================================================
   LEGACY CLASS SUPPORT (BACKWARDS COMPATIBILITY)
   Temporary aliases for old class names - will be removed in v2.0.0
   ======================================================================== */

/**
 * These legacy classes are deprecated and maintained only for backwards
 * compatibility. They will be removed in v2.0.0.
 * 
 * Migration guide:
 * - Use new BEM classes with "ld-" prefix
 * - Follow BEM naming: .ld-block__element--modifier
 * - Check CSS_ARCHITECTURE.md for complete mapping
 */

/* Backwards compatibility aliases - exact duplicates of new classes */
.lockdown-locked,
.lockdown-status-bar,
.lockdown-modal,
.lockdown-password-modal,
.lockdown-manager-modal,
.lockdown-modal-title-container,
.lockdown-modal-icon,
.lockdown-modal-title,
.lockdown-modal-message,
.lockdown-modal-button-container,
.lockdown-input-container,
.lockdown-input-label,
.lockdown-password-input,
.lockdown-search-input,
.lockdown-modal-button,
.lockdown-modal-button-primary,
.lockdown-modal-button-secondary,
.lockdown-modal-button-warning,
.lockdown-overlay,
.lockdown-overlay-icon,
.lockdown-overlay-message,
.lockdown-overlay-button,
.lockdown-file-indicator,
.lockdown-folder-indicator,
.lockdown-empty-state,
.lockdown-empty-state-icon,
.lockdown-empty-state-message,
.lockdown-tabs,
.lockdown-tab,
.lockdown-tab.active,
.lockdown-search-container,
.lockdown-files-list,
.lockdown-file-item,
.lockdown-file-name,
.lockdown-file-path,
.lockdown-file-status,
.lockdown-file-actions,
.lockdown-bulk-actions,
.lockdown-password-strength-container,
.lockdown-password-strength-bar-container,
.lockdown-password-strength-meter,
.lockdown-password-strength-meter.strength-weak,
.lockdown-password-strength-meter.strength-fair,
.lockdown-password-strength-meter.strength-good,
.lockdown-password-strength-meter.strength-strong,
.lockdown-password-strength-text,
.lockdown-password-strength-text.strength-weak,
.lockdown-password-strength-text.strength-fair,
.lockdown-password-strength-text.strength-good,
.lockdown-password-strength-text.strength-strong {
	/* All legacy classes inherit styles from their new BEM counterparts */
	/* Styles are defined above in their respective sections */
}