/**
 * Generátor hesel - Kastrolnet
 * Style Sheet
 * 
 * Table of Contents:
 * 1. CSS Variables & Theme
 * 2. Reset & Base Styles
 * 3. Typography
 * 4. Layout
 * 5. Navigation & Sidebar
 * 6. Panels & Cards
 * 7. Form Elements
 * 8. Buttons
 * 9. Password Output
 * 10. Strength Meter
 * 11. Accordion
 * 12. Checklist & Danger Zone
 * 13. Settings
 * 14. Modals
 * 15. Toast Notifications
 * 16. Tooltips
 * 17. Animations
 * 18. Utilities
 * 19. Responsive
 */

/* ===========================================
   1. CSS Variables & Theme
   =========================================== */
:root {
    /* Brand Colors */
    --color-primary: #e53935;
    --color-primary-hover: #c62828;
    --color-primary-light: rgba(229, 57, 53, 0.15);
    
    /* Accent Colors */
    --color-accent: #ff6b6b;
    --color-success: #4caf50;
    --color-warning: #ff9800;
    --color-error: #f44336;
    --color-info: #2196f3;
    
    /* Strength Colors */
    --strength-weak: #f44336;
    --strength-fair: #ff9800;
    --strength-good: #ffeb3b;
    --strength-strong: #8bc34a;
    --strength-excellent: #4caf50;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 1000;
    --z-toast: 1100;
    --z-tooltip: 1200;
    
    /* Sidebar */
    --sidebar-width: 240px;
    --sidebar-collapsed: 72px;
}

/* Dark Theme (Default) */
[data-theme="dark"] {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #242424;
    --bg-elevated: #2a2a2a;
    --bg-hover: #333333;
    
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-tertiary: #808080;
    --text-muted: #666666;
    
    --border-color: #333333;
    --border-subtle: #262626;
    
    --input-bg: #1a1a1a;
    --input-border: #404040;
    --input-focus: var(--color-primary);
    
    --card-bg: #1a1a1a;
    --card-border: #262626;
    
    --scrollbar-track: #1a1a1a;
    --scrollbar-thumb: #404040;
    --scrollbar-thumb-hover: #555555;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #fafafa;
    --bg-elevated: #ffffff;
    --bg-hover: #f0f0f0;
    
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --text-muted: #b3b3b3;
    
    --border-color: #e0e0e0;
    --border-subtle: #eeeeee;
    
    --input-bg: #ffffff;
    --input-border: #d0d0d0;
    --input-focus: var(--color-primary);
    
    --card-bg: #ffffff;
    --card-border: #e8e8e8;
    
    --scrollbar-track: #f5f5f5;
    --scrollbar-thumb: #c0c0c0;
    --scrollbar-thumb-hover: #a0a0a0;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* ===========================================
   2. Reset & Base Styles
   =========================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-thumb-hover);
}

/* Selection */
::selection {
    background-color: var(--color-primary-light);
    color: var(--text-primary);
}

/* Focus Visible */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

/* ===========================================
   3. Typography
   =========================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.125rem; }

p {
    color: var(--text-secondary);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-hover);
}

code {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    padding: 0.125rem 0.375rem;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

/* ===========================================
   4. Layout
   =========================================== */
.app-container {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.panel {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow-y: auto;
    padding: var(--spacing-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateX(20px);
    transition: all var(--transition-normal);
}

.panel.panel-active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.panel-inner {
    max-width: 800px;
    margin: 0 auto;
}

.panel-header {
    margin-bottom: var(--spacing-xl);
}

.panel-header h1 {
    margin-bottom: var(--spacing-xs);
}

.panel-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* ===========================================
   5. Navigation & Sidebar
   =========================================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: var(--z-sticky);
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

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

.logo-icon {
    color: var(--color-primary);
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-list {
    list-style: none;
    padding: var(--spacing-md);
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    width: 100%;
    padding: var(--spacing-md);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-family: inherit;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-item:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.nav-item.active .nav-icon {
    color: var(--color-primary);
}

.nav-icon {
    flex-shrink: 0;
    transition: color var(--transition-fast);
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-brand {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.theme-icon-light {
    display: none;
}

[data-theme="light"] .theme-icon-dark {
    display: none;
}

[data-theme="light"] .theme-icon-light {
    display: block;
}

/* ===========================================
   6. Panels & Cards
   =========================================== */
.settings-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.settings-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.settings-card.hidden {
    display: none;
}

.settings-card-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
}

.settings-card-title svg {
    color: var(--color-primary);
}

/* ===========================================
   7. Form Elements
   =========================================== */
/* Toggle Switches */
.toggle-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toggle-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    cursor: pointer;
}

.toggle-item input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast);
    flex-shrink: 0;
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background-color: var(--text-muted);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.toggle-item input:checked + .toggle-switch {
    background-color: var(--color-primary);
}

.toggle-item input:checked + .toggle-switch::after {
    transform: translateX(20px);
    background-color: white;
}

.toggle-item input:focus-visible + .toggle-switch {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.toggle-label {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-primary);
}

.toggle-label code {
    font-size: 0.75rem;
}

/* Radio Buttons */
.sub-options {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.radio-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    cursor: pointer;
}

.radio-item input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.radio-mark {
    position: relative;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.radio-mark::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 10px;
    height: 10px;
    background-color: var(--color-primary);
    border-radius: 50%;
    transition: transform var(--transition-fast);
}

.radio-item input:checked + .radio-mark {
    border-color: var(--color-primary);
}

.radio-item input:checked + .radio-mark::after {
    transform: translate(-50%, -50%) scale(1);
}

.radio-item input:focus-visible + .radio-mark {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.radio-label {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-primary);
}

.radio-label code {
    font-size: 0.6875rem;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Sliders */
.slider-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 0 0 4px var(--color-primary-light);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
}

.slider:focus-visible::-webkit-slider-thumb {
    box-shadow: 0 0 0 4px var(--color-primary-light);
}

.slider-value {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    white-space: nowrap;
}

.slider-input {
    width: 60px;
    padding: var(--spacing-sm);
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    text-align: center;
}

.slider-input:focus {
    border-color: var(--input-focus);
    outline: none;
}

/* Constraints */
.constraint-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.constraint-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.constraint-item span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.constraint-input {
    width: 70px;
    padding: var(--spacing-sm);
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    text-align: center;
}

.constraint-input:focus {
    border-color: var(--input-focus);
    outline: none;
}

.constraint-select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
}

.constraint-select:focus {
    border-color: var(--input-focus);
    outline: none;
}

/* Mode Selector */
.mode-selector {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.mode-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex: 1;
    min-width: 80px;
}

.mode-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

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

.mode-btn svg {
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.mode-btn:hover svg,
.mode-btn.active svg {
    opacity: 1;
}

/* ===========================================
   8. Buttons
   =========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

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

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

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

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

.btn-accent {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
}

.btn-accent:hover:not(:disabled) {
    filter: brightness(1.1);
}

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

.btn-danger:hover:not(:disabled) {
    background-color: #d32f2f;
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.8125rem;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.btn-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) 0;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.8125rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.btn-link:hover {
    color: var(--color-primary);
}

.btn-link svg {
    transition: transform var(--transition-fast);
}

.btn-link[aria-expanded="true"] svg {
    transform: rotate(180deg);
}

.btn-generate {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

.generate-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

/* ===========================================
   9. Password Output
   =========================================== */
.password-output-wrapper {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.password-output {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast);
}

.password-output:focus-within {
    border-color: var(--color-primary);
}

.password-field {
    flex: 1;
    padding: var(--spacing-sm);
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 1.125rem;
    letter-spacing: 0.02em;
    outline: none;
}

.password-field.masked {
    -webkit-text-security: disc;
    font-family: var(--font-family);
    letter-spacing: 0.15em;
}

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

.password-animation-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, var(--color-primary-light), transparent);
    border-radius: var(--radius-lg);
    pointer-events: none;
    opacity: 0;
}

.password-animation-overlay.animating {
    animation: passwordGenerate 0.4s ease-out;
}

@keyframes passwordGenerate {
    0% {
        opacity: 0;
        transform: translateX(-100%);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateX(100%);
    }
}

/* Visibility Toggle Icons */
.btn-icon .icon-hide {
    display: none;
}

.btn-icon.visible .icon-show {
    display: none;
}

.btn-icon.visible .icon-hide {
    display: block;
}

/* ===========================================
   10. Strength Meter
   =========================================== */
.strength-meter {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.strength-bar-container {
    height: 8px;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.strength-bar {
    height: 100%;
    width: 0%;
    border-radius: var(--radius-full);
    transition: width var(--transition-normal), background-color var(--transition-normal);
}

.strength-bar[data-strength="0"] { width: 0%; background-color: var(--bg-tertiary); }
.strength-bar[data-strength="1"] { width: 20%; background-color: var(--strength-weak); }
.strength-bar[data-strength="2"] { width: 40%; background-color: var(--strength-fair); }
.strength-bar[data-strength="3"] { width: 60%; background-color: var(--strength-good); }
.strength-bar[data-strength="4"] { width: 80%; background-color: var(--strength-strong); }
.strength-bar[data-strength="5"] { width: 100%; background-color: var(--strength-excellent); }

.strength-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.strength-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.strength-value {
    font-weight: 600;
    color: var(--text-primary);
}

.strength-score {
    color: var(--text-tertiary);
    font-size: 0.8125rem;
}

.strength-details {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-subtle);
    display: none;
}

.strength-details.visible {
    display: block;
    animation: fadeIn var(--transition-fast);
}

.entropy-info,
.crack-time {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.entropy-info svg,
.crack-time svg {
    color: var(--text-tertiary);
}

.strength-tips {
    margin-top: var(--spacing-md);
}

.strength-tip {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.strength-tip svg {
    flex-shrink: 0;
    color: var(--color-warning);
}

/* ===========================================
   10b. Check Password Section
   =========================================== */
.check-password-card {
    margin-top: var(--spacing-lg);
}

.check-password-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.check-password-field {
    flex: 1;
    padding: var(--spacing-sm);
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    outline: none;
}

.check-password-field::placeholder {
    color: var(--text-muted);
    font-family: var(--font-family);
}

.check-result {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.check-result.hidden {
    display: none;
}

.check-strength-bar-container {
    height: 6px;
    background-color: var(--bg-hover);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.check-strength-bar {
    height: 100%;
    width: 0%;
    border-radius: var(--radius-full);
    transition: width var(--transition-normal), background-color var(--transition-normal);
}

.check-info {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* ===========================================
   11. Accordion
   =========================================== */
.accordion {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.accordion-item {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.accordion-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    width: 100%;
    padding: var(--spacing-lg);
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.accordion-header:hover {
    background-color: var(--bg-hover);
}

.accordion-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-primary-light);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    flex-shrink: 0;
}

.accordion-title {
    flex: 1;
}

.accordion-arrow {
    color: var(--text-tertiary);
    transition: transform var(--transition-fast);
}

.accordion-header[aria-expanded="true"] .accordion-arrow {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.accordion-content[aria-hidden="false"] {
    max-height: 500px;
}

.accordion-content > * {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.tip-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.tip-list li {
    position: relative;
    padding-left: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.tip-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 6px;
    height: 6px;
    background-color: var(--color-primary);
    border-radius: 50%;
}

.tip-note {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--bg-tertiary);
    border-left: 3px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* Quick Actions */
.quick-actions {
    margin-bottom: var(--spacing-xl);
}

/* ===========================================
   12. Checklist & Danger Zone
   =========================================== */
.checklist-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.checklist-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-size: 1rem;
    color: var(--text-primary);
}

.checklist-title svg {
    color: var(--color-success);
}

.checklist {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.checklist-item label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    cursor: pointer;
}

.checklist-item input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkmark {
    position: relative;
    width: 22px;
    height: 22px;
    background-color: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.checkmark::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 7px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform var(--transition-fast);
}

.checklist-item input:checked + .checkmark {
    background-color: var(--color-success);
    border-color: var(--color-success);
}

.checklist-item input:checked + .checkmark::after {
    transform: rotate(45deg) scale(1);
}

.checklist-item input:focus-visible + .checkmark {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.checklist-item span:last-child {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.checklist-item input:checked ~ span:last-child {
    text-decoration: line-through;
    color: var(--text-muted);
}

/* Danger Card */
.danger-card {
    background-color: rgba(244, 67, 54, 0.08);
    border: 1px solid rgba(244, 67, 54, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.danger-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-size: 1rem;
    color: var(--color-error);
}

.danger-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.danger-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.danger-list li svg {
    color: var(--color-error);
    flex-shrink: 0;
    margin-top: 2px;
}

/* ===========================================
   13. Settings
   =========================================== */
.settings-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.settings-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
}

.settings-item-danger {
    border-color: rgba(244, 67, 54, 0.3);
}

.settings-item-info {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.settings-item-info svg {
    color: var(--text-tertiary);
    flex-shrink: 0;
    margin-top: 2px;
}

.settings-item-info h3 {
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-xs);
}

.settings-item-info p {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.settings-item-control {
    flex-shrink: 0;
}

.settings-item-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.settings-select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    min-width: 120px;
}

.settings-select:focus {
    border-color: var(--input-focus);
    outline: none;
}

/* Theme Toggle Button */
.toggle-theme-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs);
    background-color: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
}

.toggle-theme-label {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.toggle-theme-btn[aria-pressed="true"] .toggle-theme-label:first-child,
.toggle-theme-btn[aria-pressed="false"] .toggle-theme-label:last-child {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
}

.toggle-theme-switch {
    display: none;
}

/* Import Section */
.import-section {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
}

.import-section.hidden {
    display: none;
}

.import-section h3 {
    margin-bottom: var(--spacing-md);
}

.import-textarea {
    width: 100%;
    min-height: 150px;
    padding: var(--spacing-md);
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    resize: vertical;
    margin-bottom: var(--spacing-md);
}

.import-textarea:focus {
    border-color: var(--input-focus);
    outline: none;
}

.import-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* App Info */
.app-info {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-subtle);
}

.app-version {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-xs);
}

.app-copyright {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ===========================================
   14. Modals
   =========================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.modal-overlay.hidden {
    display: none;
}

.modal {
    width: 100%;
    max-width: 500px;
    max-height: 80vh;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    transform: scale(0.95) translateY(20px);
    transition: transform var(--transition-normal);
}

.modal-overlay.visible .modal {
    transform: scale(1) translateY(0);
}

.modal-sm {
    max-width: 400px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.125rem;
}

.modal-close {
    color: var(--text-tertiary);
}

.modal-body {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* History List */
.history-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.history-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.history-password {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-primary);
    word-break: break-all;
}

.history-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.history-empty {
    text-align: center;
    color: var(--text-tertiary);
    padding: var(--spacing-xl);
}

/* ===========================================
   15. Toast Notifications
   =========================================== */
#toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: var(--z-toast);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: toastIn var(--transition-normal) ease-out;
}

.toast.toast-out {
    animation: toastOut var(--transition-fast) ease-in forwards;
}

.toast-icon {
    flex-shrink: 0;
}

.toast-success .toast-icon { color: var(--color-success); }
.toast-error .toast-icon { color: var(--color-error); }
.toast-warning .toast-icon { color: var(--color-warning); }
.toast-info .toast-icon { color: var(--color-info); }

.toast-message {
    font-size: 0.875rem;
    color: var(--text-primary);
}

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

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

/* ===========================================
   16. Tooltips
   =========================================== */
.tooltip-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    padding: 0;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: help;
    transition: color var(--transition-fast);
}

.tooltip-btn:hover {
    color: var(--text-secondary);
}

.tooltip {
    position: fixed;
    max-width: 250px;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    z-index: var(--z-tooltip);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.tooltip.visible {
    opacity: 1;
}

.tooltip.hidden {
    display: none;
}

/* ===========================================
   17. Animations
   =========================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Slot Animation for Password */
.password-slot-animation {
    animation: slotSpin 0.1s steps(1) 5;
}

@keyframes slotSpin {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

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

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

/* ===========================================
   19. Responsive
   =========================================== */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 200px;
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 100%;
    }
    
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .sidebar-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    
    .nav-list {
        display: flex;
        flex-direction: row;
        padding: var(--spacing-sm);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-item {
        flex-direction: column;
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.75rem;
        gap: var(--spacing-xs);
    }
    
    .sidebar-footer {
        display: none;
    }
    
    .main-content {
        margin-left: 0;
        min-height: auto;
    }
    
    .panel {
        position: relative;
        padding: var(--spacing-md);
    }
    
    .panel:not(.panel-active) {
        display: none;
    }
    
    .mode-selector {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin: 0 calc(var(--spacing-lg) * -1);
        padding: 0 var(--spacing-lg);
    }
    
    .mode-btn {
        min-width: 70px;
        flex: 0 0 auto;
    }
    
    .settings-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .settings-item-control {
        width: 100%;
        margin-top: var(--spacing-md);
    }
    
    .settings-item-buttons {
        width: 100%;
    }
    
    .settings-item-buttons .btn {
        flex: 1;
    }
    
    .generate-actions {
        flex-direction: column;
    }
    
    .generate-actions .btn {
        width: 100%;
    }
    
    #toast-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
        bottom: var(--spacing-md);
    }
    
    .toast {
        width: 100%;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .password-field {
        font-size: 1rem;
    }
    
    .slider-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .slider-value {
        justify-content: center;
        margin-top: var(--spacing-sm);
    }
    
    .constraint-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .constraint-input,
    .constraint-select {
        width: 100%;
    }
    
    .accordion-header {
        padding: var(--spacing-md);
    }
    
    .accordion-icon {
        width: 32px;
        height: 32px;
    }
    
    .accordion-icon svg {
        width: 18px;
        height: 18px;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #ff0000;
        --border-color: currentColor;
    }
    
    .btn-primary {
        border: 2px solid white;
    }
    
    .toggle-switch {
        border: 2px solid currentColor;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .btn,
    .toast,
    .modal-overlay {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .panel {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
    }
}