/* AWARD-WINNING DESIGN SYSTEM 2025 */
/* Inspired by Apple Design Awards, Awwwards Site of the Year, and CSS Design Awards */

:root {
    /* Award-Winning Color System */
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 25%, #ec4899 50%, #f43f5e 75%, #f97316 100%);
    --hero-gradient: linear-gradient(120deg, #a8edea 0%, #fed6e3 50%, #ffedd5 100%);
    --glass-ultra: rgba(255, 255, 255, 0.25);
    --glass-medium: rgba(255, 255, 255, 0.15);
    --glass-subtle: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: 0 25px 50px rgba(31, 38, 135, 0.4);
    
    /* Neomorphism Colors */
    --neu-bg: #f0f4f8;
    --neu-light: #ffffff;
    --neu-dark: #d1d9e6;
    --neu-accent: #667eea;
    
    /* Typography Hierarchy */
    --text-hero: #0f172a;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-inverse: #ffffff;
    
    /* Advanced Shadow System */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --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, 0.25);
    --shadow-floating: 0 32px 80px rgba(0, 0, 0, 0.2);
    
    /* Neomorphism Shadows */
    --neu-shadow-out: 8px 8px 16px #d1d9e6, -8px -8px 16px #ffffff;
    --neu-shadow-in: inset 8px 8px 16px #d1d9e6, inset -8px -8px 16px #ffffff;
    --neu-shadow-hover: 12px 12px 24px #d1d9e6, -12px -12px 24px #ffffff;
    
    /* Motion Design */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-in-out-circ: cubic-bezier(0.85, 0, 0.15, 1);
    --ease-elastic: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Animation Durations */
    --duration-instant: 0.1s;
    --duration-fast: 0.2s;
    --duration-normal: 0.3s;
    --duration-slow: 0.5s;
    --duration-slower: 0.8s;
    
    /* Responsive Spacing */
    --space-0: 0;
    --space-1: clamp(0.25rem, 1vw, 0.5rem);
    --space-2: clamp(0.5rem, 2vw, 0.75rem);
    --space-3: clamp(0.75rem, 3vw, 1rem);
    --space-4: clamp(1rem, 4vw, 1.5rem);
    --space-5: clamp(1.25rem, 5vw, 2rem);
    --space-6: clamp(1.5rem, 6vw, 2.5rem);
    --space-8: clamp(2rem, 8vw, 4rem);
    --space-10: clamp(2.5rem, 10vw, 5rem);
    
    /* Fluid Typography */
    --text-xs: clamp(0.75rem, 2vw, 0.875rem);
    --text-sm: clamp(0.875rem, 2.5vw, 1rem);
    --text-base: clamp(1rem, 3vw, 1.125rem);
    --text-lg: clamp(1.125rem, 3.5vw, 1.25rem);
    --text-xl: clamp(1.25rem, 4vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 5vw, 2rem);
    --text-3xl: clamp(2rem, 6vw, 3rem);
    --text-4xl: clamp(2.5rem, 8vw, 4rem);
    
    /* Border Radius */
    --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;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--neu-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Award-Winning Background Animation */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #f0f9ff, #f8fafc, #fef7ed, #fdf2f8);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    z-index: -2;
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.3) 0%, transparent 50%);
    animation: floatingOrbs 20s ease infinite;
    z-index: -1;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes floatingOrbs {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

/* Main Container - Award-Winning Layout */
.price-modifier-widget {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    position: relative;
}

.app-container {
    background: var(--glass-ultra);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-3xl);
    padding: var(--space-8);
    max-width: 1000px;
    width: 100%;
    box-shadow: var(--shadow-2xl);
    position: relative;
    overflow: hidden;
    transform: translateY(0);
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.app-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
}

.app-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50%;
    height: 1px;
    background: var(--primary-gradient);
    opacity: 0.8;
}

.app-container:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-floating);
}

/* Hero Header - Award-Winning Typography */
.app-header {
    text-align: center;
    margin-bottom: var(--space-8);
    position: relative;
}

.app-header h1 {
    font-size: var(--text-4xl);
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.1;
    margin-bottom: var(--space-2);
    letter-spacing: -0.02em;
    position: relative;
}

.app-header h1::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    opacity: 0.6;
}

.badge {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #6366f1, #8b5cf6) !important;
    color: #ffffff !important;
    font-size: var(--text-sm) !important;
    font-weight: 800 !important;
    padding: var(--space-2) var(--space-4) !important;
    border-radius: var(--radius-full) !important;
    margin-left: var(--space-3) !important;
    box-shadow: 
        0 4px 14px rgba(99, 102, 241, 0.3),
        0 2px 8px rgba(139, 92, 246, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.3) !important;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
    transition: all var(--duration-fast) var(--ease-out-expo) !important;
    text-transform: uppercase !important;
    letter-spacing: 0.1em !important;
    position: relative !important;
    overflow: hidden !important;
    -webkit-text-fill-color: #ffffff !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2) !important;
}

.badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.6s ease;
}

.badge:hover {
    transform: scale(1.05) !important;
    box-shadow: 
        0 6px 20px rgba(99, 102, 241, 0.4),
        0 3px 12px rgba(139, 92, 246, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.4) !important;
}

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

.subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    font-weight: 400;
    opacity: 0.9;
    max-width: 500px;
    margin: 0 auto;
}

/* Editable Content Area - Premium Design */
.editable-content {
    background: var(--neu-bg);
    box-shadow: var(--neu-shadow-in);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    min-height: 200px;
    margin-bottom: var(--space-6);
    font-size: var(--text-base);
    line-height: 1.8;
    transition: all var(--duration-normal) var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.editable-content:focus {
    outline: none;
    box-shadow: var(--neu-shadow-in), 0 0 0 3px rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.3);
}

.editable-content::before {
    content: attr(placeholder);
    position: absolute;
    top: var(--space-6);
    left: var(--space-6);
    color: var(--text-muted);
    pointer-events: none;
    transition: all var(--duration-fast) var(--ease-out-expo);
    opacity: 0;
}

.editable-content:empty::before {
    opacity: 1;
}

/* Controls Section - Modern Layout */
.controls {
    margin-bottom: var(--space-6);
}

.input-group {
    margin-bottom: var(--space-5);
}

.input-group label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    letter-spacing: 0.025em;
}

.input-group input {
    width: 100%;
    background: var(--neu-bg);
    box-shadow: var(--neu-shadow-in);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--text-primary);
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.input-group input:focus {
    outline: none;
    box-shadow: var(--neu-shadow-in), 0 0 0 3px rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.3);
}

.input-group input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

/* Button Group - Ultra Modern Design */
.button-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 32px;
}

@media (min-width: 640px) {
    .button-group {
        grid-template-columns: repeat(4, 1fr);
        gap: 12px;
    }
}

/* Modern Button Design - Apple/Figma Inspired */
button {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 20px;
    border: none;
    border-radius: 12px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 56px;
    outline: none;
    overflow: hidden;
}

/* Remove old shimmer elements */
button .shimmer {
    display: none;
}

/* Modern Glow Effect */
button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: inherit;
    background: inherit;
    filter: blur(8px);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

button:hover::before {
    opacity: 0.4;
}

/* Button States */
button:hover {
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

/* ADD Button - Modern Green */
.btn-add {
    background: linear-gradient(135deg, #00C896 0%, #00B887 100%);
    color: white;
    box-shadow: 
        0 4px 14px rgba(0, 200, 150, 0.25),
        0 2px 6px rgba(0, 184, 135, 0.15);
}

.btn-add:hover {
    background: linear-gradient(135deg, #00B887 0%, #00A878 100%);
    box-shadow: 
        0 8px 25px rgba(0, 200, 150, 0.35),
        0 4px 12px rgba(0, 184, 135, 0.25);
}

/* SUBTRACT Button - Modern Red */
.btn-subtract {
    background: linear-gradient(135deg, #FF6B6B 0%, #FF5757 100%);
    color: white;
    box-shadow: 
        0 4px 14px rgba(255, 107, 107, 0.25),
        0 2px 6px rgba(255, 87, 87, 0.15);
}

.btn-subtract:hover {
    background: linear-gradient(135deg, #FF5757 0%, #FF4C4C 100%);
    box-shadow: 
        0 8px 25px rgba(255, 107, 107, 0.35),
        0 4px 12px rgba(255, 87, 87, 0.25);
}

/* UNDO Button - Modern Blue */
.btn-undo {
    background: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
    color: white;
    box-shadow: 
        0 4px 14px rgba(74, 144, 226, 0.25),
        0 2px 6px rgba(53, 122, 189, 0.15);
}

.btn-undo:hover {
    background: linear-gradient(135deg, #357ABD 0%, #2969A3 100%);
    box-shadow: 
        0 8px 25px rgba(74, 144, 226, 0.35),
        0 4px 12px rgba(53, 122, 189, 0.25);
}

/* COPY Button - Modern Purple */
.btn-copy {
    background: linear-gradient(135deg, #9C88FF 0%, #8C7AE6 100%);
    color: white;
    box-shadow: 
        0 4px 14px rgba(156, 136, 255, 0.25),
        0 2px 6px rgba(140, 122, 230, 0.15);
}

.btn-copy:hover {
    background: linear-gradient(135deg, #8C7AE6 0%, #7B68EE 100%);
    box-shadow: 
        0 8px 25px rgba(156, 136, 255, 0.35),
        0 4px 12px rgba(140, 122, 230, 0.25);
}

/* Icon Styling */
button i {
    font-size: 16px;
    opacity: 0.95;
}

/* Loading and Success States */
button.loading {
    opacity: 0.7;
    pointer-events: none;
}

button.success {
    animation: successBounce 0.5s ease-out;
}

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

/* Focus State */
button:focus-visible {
    outline: 2px solid rgba(74, 144, 226, 0.5);
    outline-offset: 2px;
}

/* Disabled State */
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Info Box - Premium Information Display */
.info-box {
    background: var(--glass-medium);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    margin-bottom: var(--space-6);
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
    position: relative;
    overflow: hidden;
}

.info-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
}

.info-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--neu-accent);
    font-size: var(--text-lg);
}

.info-text {
    font-size: var(--text-sm);
    line-height: 1.6;
    color: var(--text-secondary);
}

.green-text {
    color: #10b981;
    font-weight: 600;
}

.red-text {
    color: #ef4444;
    font-weight: 600;
}

.blue-text {
    color: #3b82f6;
    font-weight: 600;
}

/* History Section - Expandable Design */
.history-section {
    background: var(--glass-subtle);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.history-header {
    padding: var(--space-4) var(--space-5);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--glass-medium);
    transition: all var(--duration-fast) var(--ease-out-expo);
}

.history-header:hover {
    background: var(--glass-ultra);
}

.history-header h3 {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

#historyContent {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--duration-normal) var(--ease-out-expo);
}

#historyContent.active {
    max-height: 300px;
}

#updateHistory {
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* Footer - Professional Contact Section */
.footer {
    text-align: center;
    padding-top: var(--space-6);
    border-top: 1px solid var(--glass-border);
    margin-top: var(--space-6);
}

.made-with {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin-bottom: var(--space-2);
}

.made-with i {
    color: #ef4444;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 50%, 100% { transform: scale(1); }
    25%, 75% { transform: scale(1.1); }
}

.contact {
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
}

.contact a {
    color: var(--neu-accent);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--duration-fast) var(--ease-out-expo);
}

.contact a:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

.phone {
    font-weight: 400;
    color: var(--text-muted);
}

.clear-cache-btn {
    background: var(--neu-bg);
    box-shadow: var(--neu-shadow-out);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: var(--text-xs);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
}

.clear-cache-btn:hover {
    box-shadow: var(--neu-shadow-hover);
    color: var(--text-primary);
}

/* Toast Notifications - Premium Design */
#toast {
    background: var(--glass-ultra);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-4) var(--space-6);
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--text-base);
    box-shadow: var(--shadow-floating);
    position: fixed;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    z-index: 10000;
    transition: all var(--duration-normal) var(--ease-out-back);
    opacity: 0;
    max-width: 400px;
    text-align: center;
}

#toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

#toast::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0.1;
    border-radius: inherit;
}

/* Responsive Design - Mobile First */
@media (max-width: 768px) {
    .app-container {
        padding: var(--space-5);
        margin: var(--space-2);
        border-radius: var(--radius-2xl);
    }
    
    .app-header h1 {
        font-size: var(--text-3xl);
    }
    
    .button-group {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2);
    }
    
    .editable-content {
        padding: var(--space-4);
        min-height: 150px;
    }
    
    #toast {
        bottom: var(--space-4);
        left: var(--space-4);
        right: var(--space-4);
        transform: translateY(100px);
        max-width: none;
    }
    
    #toast.show {
        transform: translateY(0);
    }
}

/* Accessibility & Performance */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    body::before,
    body::after {
        animation: none;
    }
}

/* Focus Management */
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--neu-accent);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #333333;
        --glass-border: rgba(0, 0, 0, 0.3);
    }
}

/* Print Styles */
@media print {
    body::before,
    body::after,
    #toast,
    .clear-cache-btn {
        display: none !important;
    }
    
    .app-container {
        box-shadow: none;
        border: 1px solid #000;
    }
}

/* Performance Optimizations */
.app-container,
.editable-content,
button {
    will-change: transform;
}

/* Loading State */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.loading button {
    cursor: not-allowed;
}

/* Success States */
.success-highlight {
    background: rgba(16, 185, 129, 0.1) !important;
    border-color: rgba(16, 185, 129, 0.3) !important;
    animation: successPulse 0.6s ease-out;
}

@keyframes successPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* Error States */
.error-highlight {
    background: rgba(239, 68, 68, 0.1) !important;
    border-color: rgba(239, 68, 68, 0.3) !important;
    animation: errorShake 0.5s ease-out;
}

@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

/* Price Highlight for Updated Prices */
.price-highlight {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(5, 150, 105, 0.15)) !important;
    color: #065f46 !important;
    font-weight: 600 !important;
    border-radius: 6px !important;
    padding: 2px 6px !important;
    box-shadow: 
        0 0 0 1px rgba(16, 185, 129, 0.3),
        0 2px 8px rgba(16, 185, 129, 0.2),
        0 0 20px rgba(16, 185, 129, 0.1) !important;
    animation: priceUpdateGlow 1.5s ease-out;
    display: inline-block;
    margin: 0 1px;
}

@keyframes priceUpdateGlow {
    0% { 
        transform: scale(1);
        box-shadow: 
            0 0 0 1px rgba(16, 185, 129, 0.3),
            0 2px 8px rgba(16, 185, 129, 0.2),
            0 0 20px rgba(16, 185, 129, 0.1);
    }
    50% { 
        transform: scale(1.05);
        box-shadow: 
            0 0 0 2px rgba(16, 185, 129, 0.5),
            0 4px 16px rgba(16, 185, 129, 0.4),
            0 0 30px rgba(16, 185, 129, 0.3);
    }
    100% { 
        transform: scale(1);
        box-shadow: 
            0 0 0 1px rgba(16, 185, 129, 0.3),
            0 2px 8px rgba(16, 185, 129, 0.2),
            0 0 20px rgba(16, 185, 129, 0.1);
    }
}