/* Ultra-Modern Age Calculator Styles - Advanced Life Analytics */
:root {
    /* Primary Colors - More Vibrant Dark Theme */
    --primary-bg: linear-gradient(135deg, #0a0014 0%, #1a0033 50%, #000624 100%);
    --secondary-bg: #0f0a1f;
    --tertiary-bg: #1a1530;
    --surface-bg: #252045;
    
    /* Enhanced Neon Accents - More Vibrant */
    --neon-blue: #00e5ff;
    --neon-purple: #d946ef;
    --neon-pink: #ff0099;
    --neon-green: #00ffaa;
    --neon-orange: #ff7b00;
    --neon-yellow: #ffff00;
    --neon-cyan: #00ffff;
    --neon-red: #ff3366;    
    /* Dynamic Gradients - More Vibrant */
    --gradient-primary: linear-gradient(135deg, #00e5ff 0%, #d946ef 25%, #ff0099 50%, #00ffaa 75%, #ffff00 100%);
    --gradient-secondary: linear-gradient(135deg, #1a1530 0%, #2a2550 50%, #3a3570 100%);
    --gradient-cosmic: linear-gradient(135deg, #ff0099 0%, #d946ef 25%, #7c3aed 50%, #00e5ff 75%, #00ffaa 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.08) 100%);
    --gradient-rainbow: linear-gradient(90deg, #ff0099, #ff7b00, #ffff00, #00ffaa, #00e5ff, #d946ef);
    --gradient-animated: linear-gradient(45deg, #ff0099, #ff7b00, #ffff00, #00ffaa, #00e5ff, #d946ef, #ff0099);
    
    /* Text Colors - Enhanced */
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-muted: #a0a0a0;
    --text-accent: var(--neon-cyan);
    --text-glow: #00e5ff;
    
    /* Enhanced Glass Effects */
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    --glass-backdrop: blur(25px);
    --glass-bright: rgba(255, 255, 255, 0.12);
    
    /* Enhanced Shadows & Glows */
    --shadow-glow-blue: 0 0 40px rgba(0, 229, 255, 0.4), 0 0 80px rgba(0, 229, 255, 0.2);
    --shadow-glow-purple: 0 0 40px rgba(217, 70, 239, 0.4), 0 0 80px rgba(217, 70, 239, 0.2);
    --shadow-glow-pink: 0 0 40px rgba(255, 0, 153, 0.4), 0 0 80px rgba(255, 0, 153, 0.2);
    --shadow-glow-green: 0 0 40px rgba(0, 255, 170, 0.4), 0 0 80px rgba(0, 255, 170, 0.2);
    --shadow-card: 0 25px 50px rgba(0, 0, 0, 0.5);
    --shadow-elevated: 0 35px 70px rgba(0, 0, 0, 0.6);
    --shadow-rainbow: 0 0 50px rgba(255, 0, 153, 0.3), 0 0 100px rgba(0, 229, 255, 0.2);
    
    /* Enhanced Animations */
    --transition-fast: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-smooth: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-slow: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-bounce: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --transition-elastic: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    
    /* Enhanced Borders & Radius */
    --border-radius: 20px;
    --border-radius-lg: 28px;
    --border-radius-xl: 36px;
    --border-radius-round: 50%;
    
    /* Enhanced Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    animation: backgroundPulse 20s ease-in-out infinite;
}

/* Advanced Background Animation */
@keyframes backgroundPulse {
    0%, 100% { 
        background: linear-gradient(135deg, #0a0014 0%, #1a0033 50%, #000624 100%); 
    }
    25% { 
        background: linear-gradient(135deg, #0f001a 0%, #2a0040 50%, #000830 100%); 
    }
    50% { 
        background: linear-gradient(135deg, #14000a 0%, #330020 50%, #240008 100%); 
    }
    75% { 
        background: linear-gradient(135deg, #0a0020 0%, #1a0050 50%, #080024 100%); 
    }
}

/* Floating Particles Animation */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(90deg); }
    50% { transform: translateY(-40px) rotate(180deg); }
    75% { transform: translateY(-20px) rotate(270deg); }
}

@keyframes floatReverse {
    0%, 100% { transform: translateY(0px) rotate(360deg); }
    25% { transform: translateY(20px) rotate(270deg); }
    50% { transform: translateY(40px) rotate(180deg); }
    75% { transform: translateY(20px) rotate(90deg); }
}

/* Cosmic Rotation */
@keyframes cosmicRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Rainbow Animation */
@keyframes rainbow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Pulsing Glow */
@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

/* Shimmer Effect */
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

/* Floating Elements */
body::before {
    content: '';
    position: fixed;
    top: 10%;
    left: 10%;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, var(--neon-pink) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
    opacity: 0.3;
    z-index: -1;
}

body::after {
    content: '';
    position: fixed;
    bottom: 10%;
    right: 10%;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, var(--neon-blue) 0%, transparent 70%);
    border-radius: 50%;
    animation: floatReverse 12s ease-in-out infinite;
    opacity: 0.2;
    z-index: -1;
}

/* Particles Background */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.4;
    background: radial-gradient(ellipse at center, rgba(0, 229, 255, 0.05) 0%, transparent 50%);
    animation: particleGlow 15s ease-in-out infinite;
}

@keyframes particleGlow {
    0%, 100% { 
        background: radial-gradient(ellipse at center, rgba(0, 229, 255, 0.05) 0%, transparent 50%);
    }
    25% { 
        background: radial-gradient(ellipse at center, rgba(217, 70, 239, 0.05) 0%, transparent 50%);
    }
    50% { 
        background: radial-gradient(ellipse at center, rgba(255, 0, 153, 0.05) 0%, transparent 50%);
    }
    75% { 
        background: radial-gradient(ellipse at center, rgba(0, 255, 170, 0.05) 0%, transparent 50%);
    }
}

/* Enhanced Glass Card Base */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border: 2px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--glass-shadow);
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
    animation: cardFloat 6s ease-in-out infinite;
}

@keyframes cardFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

.glass-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-elevated), var(--shadow-rainbow);
    border-color: var(--neon-cyan);
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: var(--gradient-animated);
    background-size: 200% 100%;
    animation: shimmer 3s ease-in-out infinite;
    opacity: 0.8;
}

.glass-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.05) 0%, transparent 70%);
    animation: cosmicRotate 20s linear infinite;
    pointer-events: none;
    opacity: 0.3;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.5;
}

/* Enhanced Header Styles */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(25px);
    border-bottom: 2px solid var(--glass-border);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    animation: headerGlow 8s ease-in-out infinite;
}

@keyframes headerGlow {
    0%, 100% { 
        border-bottom-color: rgba(0, 229, 255, 0.3);
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3), 0 0 50px rgba(0, 229, 255, 0.1);
    }
    25% { 
        border-bottom-color: rgba(217, 70, 239, 0.3);
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3), 0 0 50px rgba(217, 70, 239, 0.1);
    }
    50% { 
        border-bottom-color: rgba(255, 0, 153, 0.3);
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3), 0 0 50px rgba(255, 0, 153, 0.1);
    }
    75% { 
        border-bottom-color: rgba(0, 255, 170, 0.3);
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3), 0 0 50px rgba(0, 255, 170, 0.1);
    }
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
}

.back-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-bounce);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    background: var(--glass-bg);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.back-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.2), transparent);
    transition: var(--transition-smooth);
}

.back-link:hover {
    color: var(--neon-cyan);
    border-color: var(--neon-cyan);
    box-shadow: var(--shadow-glow-blue);
    transform: translateX(-5px) scale(1.05);
}

.back-link:hover::before {
    left: 100%;
}

.tool-title {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-animated);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: rainbow 4s ease-in-out infinite;
    text-shadow: 0 0 30px rgba(0, 229, 255, 0.3);
}

.brand {
    font-weight: 900;
    font-size: 1.4rem;
    background: var(--gradient-cosmic);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: rainbow 6s ease-in-out infinite reverse;
    text-shadow: 0 0 20px rgba(217, 70, 239, 0.4);
    letter-spacing: 2px;
}

/* Main Content */
.main-content {
    padding: var(--spacing-xl) 0;
    min-height: calc(100vh - 100px);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Tool Header */
.tool-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    position: relative;
}

.header-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

.main-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.title-icon {
    font-size: 0.8em;
    animation: rotate 10s linear infinite;
}

.subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.5;
}

.feature-badges {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.badge {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-accent);
    backdrop-filter: blur(10px);
    transition: var(--transition-fast);
}

.badge:hover {
    background: var(--neon-blue);
    color: var(--primary-bg);
    box-shadow: var(--shadow-glow-blue);
    transform: translateY(-2px);
}

/* Input Section */
.input-section {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl);
}

.input-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    max-width: 600px;
    margin: 0 auto;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.input-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.input-label i {
    color: var(--neon-blue);
    font-size: 1.2rem;
}

.input-wrapper {
    position: relative;
}

.date-input,
.time-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.1rem;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    font-family: 'JetBrains Mono', monospace;
}

.date-input:focus,
.time-input:focus {
    outline: none;
    border-color: var(--neon-blue);
    box-shadow: var(--shadow-glow-blue);
    background: rgba(0, 212, 255, 0.05);
}

.input-glow {
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: -1;
}

.input-wrapper:focus-within .input-glow {
    opacity: 0.3;
}

.calculate-btn {
    position: relative;
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 1.2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-smooth);
    overflow: hidden;
    margin-top: var(--spacing-md);
}

.btn-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    position: relative;
    z-index: 2;
}

.btn-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-smooth);
    filter: blur(20px);
}

.calculate-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-elevated);
}

.calculate-btn:hover .btn-glow {
    opacity: 0.7;
}

.calculate-btn:active {
    transform: translateY(-1px);
}

/* Loading Animation */
.loading-section {
    text-align: center;
    padding: var(--spacing-xxl);
    margin: var(--spacing-xl) 0;
}

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

.loading-container h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.loading-container p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.dna-spinner {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    position: relative;
}

.dna-helix {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid transparent;
    border-top-color: var(--neon-blue);
    border-radius: 50%;
    animation: dna-spin 2s linear infinite;
}

.dna-helix:nth-child(2) {
    border-top-color: var(--neon-purple);
    animation-delay: -1s;
    animation-direction: reverse;
}

@keyframes dna-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Output Section */
.output-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

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

/* Countdown Section */
.countdown-section {
    padding: var(--spacing-xl);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.section-title i {
    color: var(--neon-blue);
}

.countdown-display {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.countdown-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.countdown-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
    font-family: 'JetBrains Mono', monospace;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.countdown-label {
    font-size: 1rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Progress Section */
.progress-section {
    padding: var(--spacing-xl);
}

.progress-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.progress-card {
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.progress-card h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: 600;
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: var(--tertiary-bg);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 6px;
    transition: width 2s ease-out;
    position: relative;
}

.progress-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: progress-shine 2s infinite;
}

.progress-text {
    font-weight: 700;
    color: var(--neon-blue);
    font-family: 'JetBrains Mono', monospace;
}

.life-chart {
    max-width: 100%;
    height: 300px;
    margin-top: var(--spacing-lg);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    padding: var(--spacing-lg);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: -1;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-elevated);
}

.stat-card:hover::before {
    opacity: 0.05;
}

.stat-card.main-age {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xxl);
}

.stat-card.special {
    background: linear-gradient(135deg, rgba(179, 71, 217, 0.1), rgba(255, 0, 128, 0.1));
    border-color: rgba(179, 71, 217, 0.3);
}

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

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-icon {
    color: var(--neon-blue);
    font-size: 1.5rem;
}

.stat-value {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 900;
    font-family: 'JetBrains Mono', monospace;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-value.mega {
    font-size: clamp(2rem, 5vw, 4rem);
    margin-bottom: var(--spacing-sm);
}

.stat-details,
.stat-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* Cosmic Section */
.cosmic-section {
    margin-bottom: var(--spacing-xl);
}

.cosmic-card {
    padding: var(--spacing-xl);
}

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

.cosmic-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.cosmic-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-purple);
    border-color: var(--neon-purple);
}

.cosmic-item h4 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cosmic-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--neon-purple);
    margin-bottom: var(--spacing-xs);
}

.cosmic-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Planet Section */
.planets-section {
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

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

.planet-card {
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    text-align: center;
    transition: var(--transition-smooth);
    position: relative;
}

.planet-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-elevated);
}

.planet-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.planet-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.planet-age {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    background: var(--gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Milestones Section */
.milestones-section {
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.timeline-container {
    position: relative;
    max-height: 400px;
    overflow-y: auto;
    padding-right: var(--spacing-sm);
}

.milestones-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.milestone-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    transition: var(--transition-fast);
}

.milestone-item.achieved {
    border-color: var(--neon-green);
    background: rgba(0, 255, 136, 0.05);
}

.milestone-item.future {
    border-color: var(--text-muted);
    opacity: 0.6;
}

.milestone-icon {
    font-size: 1.5rem;
    color: var(--neon-green);
}

.milestone-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.milestone-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Insights Section */
.insights-section {
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.facts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.fact-card {
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.fact-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-blue);
    border-color: var(--neon-blue);
}

.fact-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--neon-orange);
}

.fact-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.fact-description {
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Generation Section */
.generation-section {
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.generation-card {
    padding: var(--spacing-xl);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    text-align: center;
}

.generation-name {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.generation-years {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.generation-description {
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

/* Predictions Section */
.predictions-section {
    padding: var(--spacing-xl);
}

.future-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.future-card {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(255, 0, 128, 0.05), rgba(124, 77, 255, 0.05));
    border: 1px solid rgba(255, 0, 128, 0.2);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    text-align: center;
    transition: var(--transition-smooth);
}

.future-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-pink);
    border-color: var(--neon-pink);
}

.future-age {
    font-size: 2rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    background: var(--gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.future-event {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.future-date {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--secondary-bg);
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-xl) 0;
    text-align: center;
    margin-top: var(--spacing-xxl);
}

.footer-content p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

/* Animations */
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.output-section > * {
    animation: fadeInUp 0.8s ease-out;
    animation-fill-mode: both;
}

.output-section > *:nth-child(1) { animation-delay: 0.1s; }
.output-section > *:nth-child(2) { animation-delay: 0.2s; }
.output-section > *:nth-child(3) { animation-delay: 0.3s; }
.output-section > *:nth-child(4) { animation-delay: 0.4s; }
.output-section > *:nth-child(5) { animation-delay: 0.5s; }
.output-section > *:nth-child(6) { animation-delay: 0.6s; }
.output-section > *:nth-child(7) { animation-delay: 0.7s; }
.output-section > *:nth-child(8) { animation-delay: 0.8s; }

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }

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

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

    .main-title {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .feature-badges {
        flex-direction: column;
        align-items: center;
    }

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

    .countdown-display {
        grid-template-columns: repeat(2, 1fr);
    }

    .cosmic-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .planets-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .countdown-display {
        grid-template-columns: 1fr;
    }

    .cosmic-grid,
    .planets-grid {
        grid-template-columns: 1fr;
    }

    .input-section {
        padding: var(--spacing-lg);
    }

    .countdown-value {
        font-size: 2rem;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 4px;
}

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

/* Header Styles */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

.back-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--accent-color);
    transform: translateX(-2px);
}

.tool-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.brand {
    font-weight: 700;
    font-size: 1.1rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 0;
    min-height: calc(100vh - 140px);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Tool Header */
.tool-header {
    text-align: center;
    margin-bottom: 3rem;
}

.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Input Section */
.input-section {
    background: var(--gradient-bg);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
}

.input-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.input-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.input-label i {
    color: var(--accent-color);
}

.date-input {
    width: 300px;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    background: var(--secondary-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    transition: var(--transition);
    box-shadow: var(--shadow-input);
}

.date-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: var(--shadow-glow);
}

.calculate-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    background: var(--gradient-accent);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-card);
    min-width: 200px;
    justify-content: center;
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow), var(--shadow-card);
}

.calculate-btn:active {
    transform: translateY(0);
}

/* Output Section */
.output-section {
    margin-top: 2rem;
}

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

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.result-card {
    background: var(--gradient-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.result-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
    box-shadow: var(--shadow-glow), var(--shadow-card);
}

.result-card.main-age {
    grid-column: 1 / -1;
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, #1a1a1a, #2a2a2a, #1a1a1a);
}

.result-card.special {
    background: linear-gradient(135deg, #2a1a3a, #3a2a4a);
    border-color: #6a4a7a;
}

.result-card.lifespan {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, #3a2a1a, #4a3a2a);
    border-color: #7a5a4a;
}

.result-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.result-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.result-label i {
    color: var(--accent-color);
}

.result-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    text-shadow: 0 0 10px var(--accent-glow);
}

.result-value.large {
    font-size: 2.5rem;
    margin-top: 0.5rem;
}

.result-value.zodiac {
    background: linear-gradient(135deg, #ffd700, #ff8c00);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

.disclaimer {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    font-style: italic;
    text-align: center;
}

/* Error Message */
.error-message {
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.error-message.hidden {
    display: none;
}

/* Footer */
.footer {
    background: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-content p {
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }

    .nav-left, .nav-right {
        order: 2;
    }

    .nav-center {
        order: 1;
    }

    .container {
        padding: 0 1rem;
    }

    .main-title {
        font-size: 2rem;
    }

    .input-section {
        padding: 1.5rem;
    }

    .date-input {
        width: 100%;
        max-width: 300px;
    }

    .results-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .result-card.main-age,
    .result-card.lifespan {
        grid-column: 1;
    }

    .result-value.large {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 1.75rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .input-section {
        padding: 1rem;
    }

    .result-card {
        padding: 1rem;
    }

    .result-value {
        font-size: 1.25rem;
    }

    .result-value.large {
        font-size: 1.75rem;
    }
}

/* Animation Effects */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.output-section {
    animation: fadeInUp 0.6s ease-out;
}

.result-card {
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.result-card:nth-child(1) { animation-delay: 0.1s; }
.result-card:nth-child(2) { animation-delay: 0.2s; }
.result-card:nth-child(3) { animation-delay: 0.3s; }
.result-card:nth-child(4) { animation-delay: 0.4s; }
.result-card:nth-child(5) { animation-delay: 0.5s; }
.result-card:nth-child(6) { animation-delay: 0.6s; }
.result-card:nth-child(7) { animation-delay: 0.7s; }
.result-card:nth-child(8) { animation-delay: 0.8s; }
.result-card:nth-child(9) { animation-delay: 0.9s; }