/* ========================================
   Base64 Tools Hub - Complete Stylesheet
   Author: OathanRex
   Version: 2.0.0 - Reviewed & Fixed
   ======================================== */

/* ========================================
   CSS Custom Properties (Variables)
   ======================================== */

:root {
    /* Primary Colors */
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #4361ee;
    --primary-600: #3651d4;
    --primary-700: #2d3eb8;
    --primary-800: #1e2a7a;
    --primary-900: #1a237e;

    --primary: var(--primary-500);
    --primary-hover: var(--primary-600);
    --primary-light: var(--primary-50);
    --primary-dark: var(--primary-700);

    /* Secondary Colors */
    --secondary: #3f37c9;
    --accent: #4895ef;

    /* Semantic Colors */
    --success-50: #ecfdf5;
    --success-500: #06d6a0;
    --success-600: #059669;

    --error-50: #fef2f2;
    --error-500: #ef476f;
    --error-600: #dc2626;

    --warning-50: #fffbeb;
    --warning-500: #ffd166;
    --warning-600: #d97706;

    --info-50: #eff6ff;
    --info-500: #4895ef;
    --info-600: #2563eb;

    /* Light Theme Colors */
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e9ecef;
    --bg-elevated: #ffffff;

    --text-primary: #212529;
    --text-secondary: #495057;
    --text-tertiary: #6c757d;
    --text-inverse: #ffffff;
    --text-disabled: #adb5bd;

    --border-color: #dee2e6;
    --border-light: #e9ecef;
    --border-focus: var(--primary);

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.04);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;

    /* Spacing Scale */
    --spacing-0: 0;
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;

    /* Border Radius */
    --radius-none: 0;
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --duration-75: 75ms;
    --duration-100: 100ms;
    --duration-150: 150ms;
    --duration-200: 200ms;
    --duration-300: 300ms;
    --duration-500: 500ms;
    --duration-700: 700ms;

    --ease-linear: linear;
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);

    --transition-fast: var(--duration-150) var(--ease-in-out);
    --transition-normal: var(--duration-200) var(--ease-in-out);
    --transition-slow: var(--duration-300) var(--ease-in-out);

    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;

    /* Layout */
    --header-height: 64px;
    --sidebar-width: 320px;
    --max-width: 1400px;
    --content-max-width: 1200px;

    /* Focus Ring */
    --focus-ring-color: var(--primary-300);
    --focus-ring-offset: 2px;
    --focus-ring-width: 2px;
}

/* ========================================
   Dark Theme
   ======================================== */

[data-theme="dark"] {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #252540;
    --bg-elevated: #2a2a45;

    --text-primary: #f8f9fa;
    --text-secondary: #ced4da;
    --text-tertiary: #868e96;
    --text-disabled: #495057;

    --border-color: #2d2d44;
    --border-light: #252540;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.35), 0 2px 4px -1px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.35), 0 4px 6px -2px rgba(0, 0, 0, 0.25);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);

    --primary-light: rgba(67, 97, 238, 0.15);
    --focus-ring-color: var(--primary-400);
}

/* ========================================
   CSS Reset & Base Styles
   ======================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Improved focus styles for accessibility */
:focus {
    outline: none;
}

:focus-visible {
    outline: var(--focus-ring-width) solid var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--primary);
    color: var(--text-inverse);
    font-weight: var(--font-weight-medium);
    z-index: var(--z-tooltip);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}

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

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

/* Buttons reset */
button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

/* Form elements */
input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

/* Images */
img,
svg {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Lists */
ul,
ol {
    list-style: none;
}

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

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

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: var(--text-tertiary);
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-tertiary);
}

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

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--text-tertiary) var(--bg-tertiary);
}

/* ========================================
   Utility Classes
   ======================================== */

.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;
}

.hidden {
    display: none !important;
}

[hidden] {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-mono {
    font-family: var(--font-mono);
}

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ========================================
   Loading Overlay
   ======================================== */

.loading-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-toast);
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loading-spinner {
    text-align: center;
}

.loading-spinner .spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--spacing-4);
}

.loading-spinner p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

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

/* ========================================
   Header
   ======================================== */

.header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    height: var(--header-height);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-4);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-4);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    text-decoration: none;
    flex-shrink: 0;
}

.logo:hover {
    text-decoration: none;
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    letter-spacing: var(--letter-spacing-tight);
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
}

.logo-subtitle {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    line-height: var(--line-height-tight);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

/* Icon Buttons */
.btn-icon {
    position: relative;
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

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

.btn-icon:active {
    transform: scale(0.95);
}

.btn-icon.btn-sm {
    width: 32px;
    height: 32px;
}

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

/* History Badge */
.history-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--primary);
    color: white;
    font-size: 10px;
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-full);
    display: none;
    align-items: center;
    justify-content: center;
}

.history-badge.visible {
    display: flex;
}

/* Theme Toggle Icons */
#themeToggle .sun-icon {
    display: none;
}

#themeToggle .moon-icon {
    display: block;
}

[data-theme="dark"] #themeToggle .sun-icon {
    display: block;
}

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

/* ========================================
   Navigation Tabs
   ======================================== */

.nav-tabs {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: var(--header-height);
    z-index: var(--z-sticky);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.nav-tabs-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-4);
    display: flex;
    gap: var(--spacing-1);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
}

.nav-tabs-container::-webkit-scrollbar {
    display: none;
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

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

.nav-tab[aria-selected="true"],
.nav-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.nav-tab svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
}

/* ========================================
   Main Content
   ======================================== */

.main-content {
    flex: 1;
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
}

/* ========================================
   Tools Grid
   ======================================== */

.tools-grid {
    padding: var(--spacing-6);
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-4);
}

/* Tool Card */
.tool-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-5);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-fast);
}

.tool-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.tool-card:hover::before {
    transform: scaleX(1);
}

.tool-card:active {
    transform: translateY(0);
}

.tool-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
}

.tool-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.tool-card:hover .tool-icon {
    background: var(--primary);
    color: white;
}

.tool-icon svg {
    width: 24px;
    height: 24px;
}

.tool-info {
    flex: 1;
    min-width: 0;
}

.tool-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
    line-height: var(--line-height-tight);
}

.tool-description {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    line-height: var(--line-height-normal);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-3);
    border-top: 1px solid var(--border-light);
    margin-top: auto;
}

.tool-category {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-tertiary);
    background-color: var(--bg-tertiary);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-full);
    text-transform: capitalize;
}

.tool-arrow {
    color: var(--text-tertiary);
    transition: all var(--transition-fast);
}

.tool-card:hover .tool-arrow {
    transform: translateX(4px);
    color: var(--primary);
}

.tool-arrow svg {
    width: 16px;
    height: 16px;
}

/* ========================================
   Workspace
   ======================================== */

.workspace {
    padding: var(--spacing-4);
    animation: fadeIn var(--duration-200) var(--ease-out);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.workspace-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-4);
    border-bottom: 1px solid var(--border-color);
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

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

.btn-back svg {
    width: 20px;
    height: 20px;
}

.workspace-title {
    flex: 1;
    min-width: 0;
}

.workspace-title h1 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
    line-height: var(--line-height-tight);
}

.workspace-title p {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.workspace-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

/* ========================================
   Tool Panels
   ======================================== */

.tool-panels {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

.tool-panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition-fast);
}

.tool-panel:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    gap: var(--spacing-2);
}

.panel-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.panel-title svg {
    width: 16px;
    height: 16px;
    color: var(--primary);
}

.panel-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.panel-body {
    flex: 1;
    min-height: 250px;
    display: flex;
    flex-direction: column;
}

.panel-body textarea {
    width: 100%;
    height: 100%;
    min-height: 250px;
    padding: var(--spacing-4);
    border: none;
    background-color: transparent;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    resize: vertical;
    transition: background-color var(--transition-fast);
}

.panel-body textarea:focus {
    outline: none;
    background-color: var(--bg-primary);
}

.panel-body textarea::placeholder {
    color: var(--text-disabled);
}

.panel-body textarea:disabled {
    background-color: var(--bg-tertiary);
    cursor: not-allowed;
}

.panel-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-2) var(--spacing-4);
    background-color: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    gap: var(--spacing-2);
    flex-wrap: wrap;
}

/* ========================================
   Buttons
   ======================================== */

.tool-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: var(--shadow-md), 0 0 0 0 var(--primary-light);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg), 0 0 0 4px var(--primary-light);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

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

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

.btn-success {
    background-color: var(--success-500);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background-color: var(--success-600);
}

.btn-danger {
    background-color: var(--error-500);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--error-600);
}

.btn-text {
    padding: var(--spacing-2) var(--spacing-3);
    color: var(--text-secondary);
    background: transparent;
}

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

.btn-text kbd {
    padding: 2px 6px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-family: var(--font-mono);
    margin-right: var(--spacing-2);
}

/* ========================================
   File Upload Area
   ======================================== */

.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-10);
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
    background-color: var(--bg-secondary);
}

.file-upload-area:hover,
.file-upload-area.drag-over {
    border-color: var(--primary);
    background-color: var(--primary-light);
}

.file-upload-area.drag-over {
    transform: scale(1.01);
}

.file-upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-4);
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
}

.file-upload-area:hover .file-upload-icon,
.file-upload-area.drag-over .file-upload-icon {
    color: var(--primary);
}

.file-upload-icon svg {
    width: 100%;
    height: 100%;
}

.file-upload-text {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.file-upload-hint {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.file-upload-input {
    display: none;
}

/* File Preview */
.file-preview {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-3);
}

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

.file-preview-icon svg {
    width: 20px;
    height: 20px;
}

.file-preview-info {
    flex: 1;
    min-width: 0;
}

.file-preview-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-preview-size {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.file-preview-remove {
    color: var(--error-500);
}

/* Image Preview */
.image-preview-wrapper {
    margin-top: var(--spacing-4);
    padding: var(--spacing-4);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-xl);
    text-align: center;
}

.image-preview {
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
    border-radius: var(--radius-lg);
}

/* ========================================
   Options Panel
   ======================================== */

.options-panel {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-4);
}

.options-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-3);
}

.option-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.option-item input[type="checkbox"],
.option-item input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    flex-shrink: 0;
}

.option-item label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.option-item select,
.option-item input[type="text"] {
    padding: var(--spacing-2) var(--spacing-3);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    min-width: 120px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.option-item select:focus,
.option-item input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* ========================================
   Progress Bar
   ======================================== */

.progress-wrapper {
    margin-top: var(--spacing-3);
}

.progress-bar {
    width: 100%;
    height: 6px;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: var(--radius-full);
    transition: width var(--duration-300) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.3),
            transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

.progress-text {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--spacing-1);
    text-align: center;
}

/* ========================================
   Modals
   ======================================== */

.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: var(--spacing-8);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal[hidden] {
    display: none;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow: hidden;
    transform: translateY(-20px);
    transition: transform var(--transition-normal);
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2,
.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

/* Search Modal */
.search-modal {
    margin-top: 10vh;
}

.search-input-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--border-color);
}

.search-input-wrapper svg {
    color: var(--text-tertiary);
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.search-input-wrapper input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    min-width: 0;
}

.search-input-wrapper input:focus {
    outline: none;
}

.search-input-wrapper input::placeholder {
    color: var(--text-disabled);
}

.search-input-wrapper kbd {
    padding: var(--spacing-1) var(--spacing-2);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-family: var(--font-mono);
    color: var(--text-tertiary);
    flex-shrink: 0;
}

.search-results {
    max-height: 400px;
    overflow-y: auto;
    padding: var(--spacing-2);
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.search-result-item:hover,
.search-result-item.selected,
.search-result-item:focus {
    background-color: var(--bg-tertiary);
    outline: none;
}

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

.search-result-icon svg {
    width: 20px;
    height: 20px;
}

.search-result-info {
    flex: 1;
    min-width: 0;
}

.search-result-name {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: 2px;
}

.search-result-category {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    text-transform: capitalize;
}

.search-empty {
    padding: var(--spacing-8);
    text-align: center;
    color: var(--text-tertiary);
}

.search-empty svg {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-3);
    opacity: 0.5;
}

/* Shortcuts Modal */
.shortcuts-modal {
    max-width: 500px;
}

.shortcuts-list {
    padding: var(--spacing-4) var(--spacing-5);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.shortcut-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-2) 0;
    gap: var(--spacing-4);
}

.shortcut-keys {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    flex-shrink: 0;
}

.shortcut-keys kbd {
    padding: var(--spacing-1) var(--spacing-2);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-family: var(--font-mono);
    color: var(--text-primary);
    box-shadow: var(--shadow-xs);
}

.shortcut-action {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ========================================
   Sidebar (History)
   ======================================== */

.sidebar {
    position: fixed;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    width: var(--sidebar-width);
    max-width: 100%;
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    z-index: var(--z-fixed);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
}

.sidebar[hidden] {
    display: flex;
}

.sidebar.active {
    transform: translateX(0);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.sidebar-header h2 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-3);
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-8);
    text-align: center;
    color: var(--text-tertiary);
    min-height: 200px;
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-3);
    opacity: 0.4;
}

.empty-state p {
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-1);
}

.empty-state span {
    font-size: var(--font-size-sm);
}

/* History Item */
.history-item {
    padding: var(--spacing-3);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-2);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.history-item:hover {
    background-color: var(--border-color);
    border-color: var(--primary-light);
}

.history-item:last-child {
    margin-bottom: 0;
}

.history-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-1);
    gap: var(--spacing-2);
}

.history-item-tool {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-item-time {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    flex-shrink: 0;
}

.history-item-preview {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    background-color: var(--bg-secondary);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-2);
}

/* ========================================
   Toast Notifications
   ======================================== */

.toast-container {
    position: fixed;
    bottom: var(--spacing-4);
    right: var(--spacing-4);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    max-width: 400px;
    min-width: 280px;
    pointer-events: auto;
    animation: toastSlideIn var(--duration-300) var(--ease-out);
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(100%) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

.toast.toast-exit {
    animation: toastSlideOut var(--duration-200) var(--ease-in) forwards;
}

@keyframes toastSlideOut {
    from {
        opacity: 1;
        transform: translateX(0) scale(1);
    }

    to {
        opacity: 0;
        transform: translateX(100%) scale(0.95);
    }
}

.toast-icon {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast-icon svg {
    width: 14px;
    height: 14px;
}

.toast-success .toast-icon {
    background-color: var(--success-50);
    color: var(--success-500);
}

.toast-success {
    border-left: 3px solid var(--success-500);
}

.toast-error .toast-icon {
    background-color: var(--error-50);
    color: var(--error-500);
}

.toast-error {
    border-left: 3px solid var(--error-500);
}

.toast-warning .toast-icon {
    background-color: var(--warning-50);
    color: var(--warning-600);
}

.toast-warning {
    border-left: 3px solid var(--warning-500);
}

.toast-info .toast-icon {
    background-color: var(--info-50);
    color: var(--info-500);
}

.toast-info {
    border-left: 3px solid var(--info-500);
}

.toast-message {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    line-height: var(--line-height-normal);
}

.toast-close {
    color: var(--text-tertiary);
    padding: var(--spacing-1);
    margin: calc(var(--spacing-1) * -1);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.toast-close:hover {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

/* ========================================
   Validation & Result Panels
   ======================================== */

.result-panel {
    padding: var(--spacing-5);
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-4);
}

.result-panel.success {
    background-color: var(--success-50);
    border: 1px solid var(--success-500);
}

.result-panel.error {
    background-color: var(--error-50);
    border: 1px solid var(--error-500);
}

.result-panel-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
}

.result-panel-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.result-panel.success .result-panel-icon {
    background-color: var(--success-500);
    color: white;
}

.result-panel.error .result-panel-icon {
    background-color: var(--error-500);
    color: white;
}

.result-panel-icon svg {
    width: 24px;
    height: 24px;
}

.result-panel-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.result-panel.success .result-panel-title {
    color: var(--success-600);
}

.result-panel.error .result-panel-title {
    color: var(--error-600);
}

.result-panel-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.result-details {
    display: grid;
    gap: var(--spacing-2);
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-color);
}

.result-detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--border-light);
}

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

.result-detail-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.result-detail-value {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

/* ========================================
   Size Calculator Display
   ======================================== */

.size-grid {
    display: grid;
    gap: var(--spacing-4);
}

.size-card {
    padding: var(--spacing-4);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-xl);
}

.size-card-label {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-1);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
}

.size-card-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: var(--line-height-tight);
}

.size-card-sub {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--spacing-1);
    font-family: var(--font-mono);
}

.size-card.highlight {
    background: linear-gradient(135deg, var(--primary-light), var(--bg-tertiary));
}

.size-card.highlight .size-card-value {
    color: var(--primary);
}

.size-card.warning {
    background-color: var(--warning-50);
}

.size-card.warning .size-card-value {
    color: var(--warning-600);
}

/* ========================================
   JWT Decoder Display
   ======================================== */

.jwt-section {
    margin-bottom: var(--spacing-4);
}

.jwt-section:last-child {
    margin-bottom: 0;
}

.jwt-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-2);
}

.jwt-section-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.jwt-section-title.header {
    color: var(--error-500);
}

.jwt-section-title.payload {
    color: var(--primary);
}

.jwt-section-title.signature {
    color: var(--accent);
}

.jwt-content {
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-3);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    white-space: pre-wrap;
    word-break: break-all;
    line-height: var(--line-height-relaxed);
}

.jwt-signature-note {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--spacing-2);
    font-style: italic;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-6) 0;
    margin-top: auto;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-4);
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary);
    background-color: var(--primary-light);
}

.footer-links a svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-color);
    gap: var(--spacing-4);
    flex-wrap: wrap;
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* ========================================
   Responsive Design
   ======================================== */

/* Tablet and below */
@media (max-width: 992px) {
    .tool-panels {
        grid-template-columns: 1fr;
    }

    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --header-height: 56px;
    }

    .header-container {
        padding: 0 var(--spacing-3);
    }

    .logo-subtitle {
        display: none;
    }

    .logo-title {
        font-size: var(--font-size-lg);
    }

    .nav-tab span {
        display: none;
    }

    .nav-tab {
        padding: var(--spacing-3);
    }

    .tools-grid {
        grid-template-columns: 1fr;
        padding: var(--spacing-3);
        gap: var(--spacing-3);
    }

    .workspace {
        padding: var(--spacing-3);
    }

    .workspace-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-3);
    }

    .workspace-title h1 {
        font-size: var(--font-size-xl);
    }

    .tool-actions {
        flex-direction: column;
        width: 100%;
    }

    .tool-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .footer-links a span {
        display: none;
    }

    .footer-links {
        gap: var(--spacing-1);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .sidebar {
        width: 100%;
    }

    .modal {
        padding: var(--spacing-4);
    }

    .modal-content {
        max-height: calc(100vh - var(--spacing-8));
        margin: 0;
    }

    .search-modal {
        margin-top: 5vh;
    }

    .toast-container {
        left: var(--spacing-3);
        right: var(--spacing-3);
        bottom: var(--spacing-3);
    }

    .toast {
        max-width: none;
        min-width: 0;
        width: 100%;
    }

    .file-upload-area {
        padding: var(--spacing-6);
    }

    .panel-body textarea {
        min-height: 200px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .header-actions {
        gap: var(--spacing-1);
    }

    .btn-icon {
        width: 36px;
        height: 36px;
    }

    .tool-card {
        padding: var(--spacing-4);
    }

    .tool-icon {
        width: 40px;
        height: 40px;
    }

    .tool-icon svg {
        width: 20px;
        height: 20px;
    }

    .options-grid {
        grid-template-columns: 1fr;
    }
}

/* Prefer Reduced Motion */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* Print Styles */
@media print {

    .header,
    .nav-tabs,
    .footer,
    .sidebar,
    .modal,
    .toast-container,
    .tool-actions,
    .btn-icon,
    .loading-overlay {
        display: none !important;
    }

    .main-content {
        max-width: none;
    }

    .workspace {
        padding: 0;
    }

    .tool-panel {
        break-inside: avoid;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: var(--text-primary);
        --border-light: var(--text-secondary);
    }

    .btn-primary {
        background: var(--primary);
        border: 2px solid var(--text-primary);
    }

    .tool-card:hover {
        border-width: 2px;
    }
}