/* ======================
   MODERN WIFI QR GENERATOR
   ====================== */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@300;400;500&display=swap');

/* CSS Variables - Modern Design System */
:root {
    /* Primary Colors - Network/WiFi Theme */
    --primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary-dark: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
    --primary-light: linear-gradient(135deg, #a5b4fc 0%, #c4b5fd 100%);
    --primary-solid: #667eea;
    --primary-solid-dark: #5a67d8;
    
    /* Secondary Colors */
    --secondary: linear-gradient(135deg, #06d6a0 0%, #118d80 100%);
    --secondary-dark: linear-gradient(135deg, #059669 0%, #065f46 100%);
    --accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    
    /* Status Colors */
    --success: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
    --warning: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    --danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    --info: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    
    /* Neutral Palette */
    --white: #ffffff;
    --black: #000000;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Surface Colors */
    --surface-primary: #ffffff;
    --surface-secondary: #f8fafc;
    --surface-tertiary: #f1f5f9;
    --surface-elevated: rgba(255, 255, 255, 0.95);
    --surface-glass: rgba(255, 255, 255, 0.1);
    
    /* Text Colors */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --text-inverse: #ffffff;
    --text-muted: #64748b;
    
    /* Background */
    --bg-primary: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    --bg-secondary: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    --bg-pattern: radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.05) 0%, transparent 50%),
                  radial-gradient(circle at 80% 20%, rgba(245, 101, 101, 0.05) 0%, transparent 50%),
                  radial-gradient(circle at 40% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    
    /* Shadows - Depth System */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
    
    /* Glass Morphism */
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* Border Radius */
    --radius-xs: 0.25rem;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;
    
    /* Transitions & Animations */
    --transition-all: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-index Stack */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-notification: 1080;
    
    /* Spacing Scale */
    --space-px: 1px;
    --space-0: 0;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Typography Scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1e293b;
        --bg-secondary: #0f172a;
        --bg-tertiary: #334155;
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --text-tertiary: #94a3b8;
        --gray-100: #334155;
        --gray-200: #475569;
        --gray-300: #64748b;
    }
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
    font-feature-settings: 'liga' 1, 'kern' 1;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Floating Background Animation */
.tool-page::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.03) 0%, transparent 50%),
                radial-gradient(circle, rgba(0, 160, 131, 0.02) 0%, transparent 50%);
    animation: floatingBackground 30s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes floatingBackground {
    0%, 100% { transform: rotate(0deg) translate(0, 0); }
    33% { transform: rotate(120deg) translate(40px, -40px); }
    66% { transform: rotate(240deg) translate(-40px, 40px); }
}

/* Main Container */
.tool-page {
    min-height: 100vh;
    position: relative;
    padding: 2rem;
}

.tool-container {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
    padding: 3rem;
}

.tool-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

/* Tool Header */
.tool-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-200);
}

.tool-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    letter-spacing: -0.025em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.tool-description {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Main Content Layout */
.wifi-generator-main {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 2rem;
    margin-bottom: 2rem;
}

.generator-workspace {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.generator-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* WiFi Form Section */
.wifi-form {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    padding: 2rem;
}

.form-header {
    margin-bottom: 2rem;
}

.form-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.input-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.input-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.input-wrapper {
    position: relative;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    font-family: 'Fira Code', 'Monaco', 'Cascadia Code', monospace;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
    transform: translateY(-1px);
}

.input-group select {
    font-family: inherit;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 0.25rem;
    border-radius: var(--radius-sm);
}

.toggle-password:hover {
    color: var(--primary-color);
    background: rgba(0, 212, 170, 0.1);
}

/* Security Level Indicator */
.security-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
    font-size: 0.75rem;
}

.security-level {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.security-level.high {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.security-level.medium {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.security-level.low {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

/* QR Code Customization */
.qr-customization {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.customization-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    background: var(--bg-primary);
}

.customization-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.customization-content {
    padding: 1.5rem;
}

.customization-group {
    margin-bottom: 1.5rem;
}

.customization-group:last-child {
    margin-bottom: 0;
}

.customization-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.size-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.size-option {
    position: relative;
}

.size-radio {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.size-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.75rem 0.5rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

.size-label:hover {
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.size-radio:checked + .size-label {
    border-color: var(--primary-color);
    background: rgba(0, 212, 170, 0.05);
    color: var(--primary-color);
}

.size-name {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.size-pixels {
    font-size: 0.625rem;
    color: var(--text-tertiary);
}

.color-picker-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.color-picker {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.color-input {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

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

/* QR Preview Section */
.qr-preview {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    padding: 2rem;
    text-align: center;
}

.preview-header {
    margin-bottom: 2rem;
}

.preview-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

.qr-display {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
    position: relative;
}

#qrcode {
    display: inline-block;
    padding: 1rem;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

#qrcode:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.qr-placeholder {
    width: 256px;
    height: 256px;
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 1rem;
    color: var(--text-tertiary);
    margin: 0 auto;
}

.placeholder-icon {
    font-size: 3rem;
    opacity: 0.5;
}

.placeholder-text {
    font-size: 0.875rem;
    font-weight: 500;
}

/* Network Info Display */
.network-info {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: 1rem;
    margin-top: 1rem;
}

.network-detail {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--gray-200);
}

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

.detail-label {
    font-weight: 500;
    color: var(--text-secondary);
}

.detail-value {
    font-family: 'Fira Code', 'Monaco', 'Cascadia Code', monospace;
    color: var(--text-primary);
    font-weight: 500;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.btn:hover:before {
    left: 100%;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
    min-width: 200px;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid var(--gray-200);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.btn:disabled {
    background: var(--gray-300) !important;
    color: var(--gray-500) !important;
    cursor: not-allowed !important;
    transform: none !important;
    box-shadow: none !important;
}

.btn:disabled:before {
    display: none;
}

/* Templates Section */
.templates-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    margin-top: 2rem;
}

.templates-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.templates-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    padding: 1.5rem;
}

.template-card {
    background: var(--bg-primary);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.template-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.template-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.template-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Instructions Panel */
.instructions-panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    padding: 2rem;
    margin-top: 2rem;
}

.instructions-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.instructions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.instruction-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--gray-200);
}

.instruction-step {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.step-number {
    width: 2rem;
    height: 2rem;
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.step-description {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .wifi-generator-main {
        grid-template-columns: 1fr;
    }
    
    .generator-sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    .tool-page {
        padding: 1rem;
    }
    
    .tool-container {
        padding: 1.5rem;
    }
    
    .tool-header h1 {
        font-size: 2rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .size-options {
        grid-template-columns: 1fr;
    }
    
    .color-picker-group {
        grid-template-columns: 1fr;
    }
    
    .templates-grid {
        grid-template-columns: 1fr;
    }
    
    .instructions-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .tool-header h1 {
        font-size: 1.75rem;
    }
    
    .qr-display {
        padding: 1rem;
    }
}

/* Print Styles */
@media print {
    .tool-page::before,
    .action-buttons,
    .templates-section,
    .instructions-panel {
        display: none !important;
    }
    
    .tool-container {
        box-shadow: none;
        border: 1px solid #000;
        margin: 0;
        padding: 1rem;
    }
    
    .tool-header h1 {
        color: #000;
        -webkit-text-fill-color: initial;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .tool-page::before {
        animation: none;
    }
}

/* Focus Styles for Keyboard Navigation */
.btn:focus,
.template-card:focus,
.size-label:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Features Bar */
.features-bar {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--surface-elevated);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    backdrop-filter: blur(10px);
    transition: var(--transition-all);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
}

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

.feature-item i {
    color: var(--primary-solid);
    font-size: 1.1em;
}

/* Input Icons */
.input-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

.input-wrapper:has(select) .input-icon {
    right: 3rem;
}

.input-help {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: 0.25rem;
    font-style: italic;
}

/* Password Strength Indicator */
.password-strength-indicator {
    margin-top: 0.75rem;
}

.strength-meter {
    width: 100%;
    height: 4px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

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

.strength-bar.weak {
    width: 25%;
    background: var(--danger);
}

.strength-bar.fair {
    width: 50%;
    background: var(--warning);
}

.strength-bar.good {
    width: 75%;
    background: var(--info);
}

.strength-bar.strong {
    width: 100%;
    background: var(--success);
}

.strength-text {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    margin-top: 0.5rem;
}

.toggle-checkbox {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-label {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gray-300);
    border-radius: var(--radius-full);
    transition: var(--transition-all);
}

.toggle-label:before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: var(--white);
    border-radius: 50%;
    transition: var(--transition-all);
    box-shadow: var(--shadow-sm);
}

.toggle-checkbox:checked + .toggle-label {
    background: var(--primary-solid);
}

.toggle-checkbox:checked + .toggle-label:before {
    transform: translateX(20px);
}

/* Result Section */
.qr-result {
    background: var(--surface-secondary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    border: 1px solid var(--gray-200);
    animation: slideInUp 0.5s ease-out;
}

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

.result-header {
    text-align: center;
    margin-bottom: 2rem;
}

.result-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.result-title i {
    color: #22c55e;
}

.result-subtitle {
    color: var(--text-secondary);
    font-size: var(--text-base);
}

/* Preview Steps */
.preview-steps {
    margin-bottom: 2rem;
}

.preview-step {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--surface-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    transition: var(--transition-all);
}

.preview-step:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--primary-solid);
}

.preview-step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 2rem;
    height: 2rem;
    background: var(--primary);
    color: var(--text-inverse);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: 700;
    flex-shrink: 0;
}

.step-content p {
    margin: 0;
    color: var(--text-primary);
    font-weight: 500;
}

/* Device Preview */
.preview-device {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

.device-frame {
    width: 200px;
    height: 360px;
    background: var(--gray-800);
    border-radius: var(--radius-2xl);
    padding: 1rem;
    position: relative;
    box-shadow: var(--shadow-xl);
}

.device-frame::before {
    content: '';
    position: absolute;
    top: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 3rem;
    height: 0.25rem;
    background: var(--gray-600);
    border-radius: var(--radius-full);
}

.device-screen {
    width: 100%;
    height: 100%;
    background: var(--surface-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.device-notification {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-solid);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-sm);
    font-weight: 500;
    border: 1px solid rgba(102, 126, 234, 0.2);
    animation: pulse 2s infinite;
}

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

/* Templates Subtitle */
.templates-subtitle {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin-left: auto;
}

/* Correction Options */
.correction-options {
    position: relative;
}

.correction-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    background: var(--surface-primary);
    color: var(--text-primary);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: var(--transition-all);
}

.correction-select:focus {
    outline: none;
    border-color: var(--primary-solid);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.correction-help {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: 0.5rem;
    line-height: 1.4;
}

/* Style Button */
.style-btn {
    width: 100%;
    margin-top: 1rem;
}

/* Button Variants */
.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--gray-300);
}

.btn-outline:hover {
    background: var(--surface-secondary);
    border-color: var(--primary-solid);
    color: var(--primary-solid);
}

/* Instruction Cards */
.instruction-card h4 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.instruction-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.instruction-card ul {
    list-style: none;
    padding: 0;
}

.instruction-card li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.instruction-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-solid);
    font-weight: bold;
}

/* Notification System */
.notification {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: var(--z-notification);
    transform: translateX(100%);
    transition: var(--transition-all);
    max-width: 400px;
}

.notification.show {
    transform: translateX(0);
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--surface-primary);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    backdrop-filter: blur(10px);
}

.notification-icon {
    font-size: 1.25rem;
    color: #22c55e;
    flex-shrink: 0;
}

.notification-message {
    flex: 1;
    color: var(--text-primary);
    font-weight: 500;
    font-size: var(--text-sm);
}

.notification-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.notification-close:hover {
    background: var(--gray-100);
    color: var(--text-primary);
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary-solid);
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Success/Error States */
.input-group.success input {
    border-color: #22c55e;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.input-group.error input {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.error-message {
    color: #ef4444;
    font-size: var(--text-xs);
    margin-top: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-solid: #008000;
        --danger-color: #ff0000;
        --success-color: #008000;
        --text-primary: #000000;
        --surface-primary: #ffffff;
    }
    
    .template-card,
    .qr-display,
    .network-info {
        border: 2px solid #000;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* Mobile Enhancements */
@media (max-width: 640px) {
    .features-bar {
        gap: 1rem;
    }
    
    .feature-item {
        font-size: var(--text-xs);
        padding: 0.5rem 0.75rem;
    }
    
    .device-frame {
        width: 160px;
        height: 280px;
    }
    
    .notification {
        left: 1rem;
        right: 1rem;
        top: 1rem;
        max-width: none;
        transform: translateY(-100%);
    }
    
    .notification.show {
        transform: translateY(0);
    }
}