/* Netti Portfolio Demo - External Styles */
/* Modern Dark Theme with Vibrant Accents */

:root {
    /* Brand Colors from Figma Design */
    --primary-blue: #007AFF;
    --accent-orange: #FE6D33;
    --accent-green: #319375;
    --accent-purple: #8C9EFF;
    --accent-yellow: #ECAB4B;
    --accent-pink: #C659A1;
    
    /* Dark Theme Colors */
    --dark-bg: #0E0E0E;
    --dark-surface: #1C1C1E;
    --dark-card: #2C2C2E;
    --dark-elevated: #3C3C3E;
    
    /* Text Colors */
    --text-primary: #FFFFFF;
    --text-secondary: #8E8E93;
    --text-tertiary: #636366;
    
    /* Gradients */
    --gradient-blue: linear-gradient(135deg, #007AFF 0%, #00f2fe 100%);
    --gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-pink: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-green: linear-gradient(135deg, #319375 0%, #10D876 100%);
    --gradient-orange: linear-gradient(135deg, #FE6D33 0%, #FF8A65 100%);
    --gradient-mesh: linear-gradient(135deg, #007AFF 0%, #00f2fe 50%, #FE6D33 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow-blue: 0 0 40px rgba(0, 122, 255, 0.3);
    --shadow-glow-orange: 0 0 40px rgba(254, 109, 51, 0.3);
    
    /* Animations */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    --transition-smooth: 600ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --max-width: 1400px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 30px;
    --radius-full: 9999px;
}

/* Enhanced Animations */
@keyframes float {
    0%, 100% { 
        transform: translate(0, 0) scale(1) rotate(0deg); 
        opacity: 0.3;
    }
    25% { 
        transform: translate(100px, -100px) scale(1.1) rotate(45deg); 
        opacity: 0.35;
    }
    50% { 
        transform: translate(-100px, 100px) scale(0.9) rotate(90deg); 
        opacity: 0.25;
    }
    75% { 
        transform: translate(50px, 50px) scale(1.05) rotate(-45deg); 
        opacity: 0.35;
    }
}

@keyframes pulse {
    0%, 100% { 
        transform: scale(1); 
        opacity: 1;
    }
    50% { 
        transform: scale(1.1); 
        opacity: 0.7;
    }
}

@keyframes shimmer {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

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

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 122, 255, 0.5); }
    50% { box-shadow: 0 0 40px rgba(0, 122, 255, 0.8); }
}

@keyframes float-phone {
    0%, 100% { 
        transform: translateY(0) rotate(0); 
    }
    25% { 
        transform: translateY(-20px) rotate(2deg); 
    }
    75% { 
        transform: translateY(10px) rotate(-2deg); 
    }
}

/* Global Styles Enhancement */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--dark-bg);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Utility Classes */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.gradient-text {
    background: var(--gradient-mesh);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: shimmer 3s linear infinite;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* Loading Screen Enhancement */
.loading-spinner {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(0, 122, 255, 0.1);
    border-top-color: var(--primary-blue);
    border-right-color: var(--accent-orange);
    border-radius: 50%;
    animation: rotate 1s linear infinite;
    box-shadow: var(--shadow-glow-blue);
}

/* Enhanced Feature Cards */
.feature-card {
    background: var(--dark-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-blue);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-smooth);
}

.feature-card::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 150%;
    height: 150%;
    background: radial-gradient(circle, var(--primary-blue), transparent);
    opacity: 0;
    transform: translate(-50%, -50%);
    transition: opacity var(--transition-smooth);
    pointer-events: none;
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 60px rgba(0, 122, 255, 0.3);
    border-color: rgba(0, 122, 255, 0.3);
}

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

.feature-card:hover::after {
    opacity: 0.05;
}

.feature-card:nth-child(1)::before { background: var(--gradient-blue); }
.feature-card:nth-child(2)::before { background: var(--gradient-purple); }
.feature-card:nth-child(3)::before { background: var(--gradient-green); }
.feature-card:nth-child(4)::before { background: var(--gradient-orange); }
.feature-card:nth-child(5)::before { background: linear-gradient(90deg, #007AFF, #0051D5); }
.feature-card:nth-child(6)::before { background: var(--gradient-pink); }

/* Service Icons Enhancement */
.service-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
    position: relative;
    transition: transform var(--transition-base);
}

.service-icon::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: var(--radius-lg);
    background: inherit;
    filter: blur(10px);
    opacity: 0.3;
    z-index: -1;
    transition: opacity var(--transition-base);
}

.feature-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card:hover .service-icon::after {
    opacity: 0.6;
}

.icon-speed { background: var(--gradient-blue); }
.icon-iperf-client { background: var(--gradient-purple); }
.icon-iperf-server { background: linear-gradient(135deg, #FF8A65, #FF6B35); }
.icon-ping { background: var(--gradient-green); }
.icon-trace { background: linear-gradient(135deg, #ECAB4B, #FFA726); }
.icon-network { background: linear-gradient(135deg, #007AFF, #0051D5); }
.icon-transfer { background: var(--gradient-pink); }

/* Button Enhancements */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-smooth);
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.1rem;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
    box-shadow: 0 4px 20px rgba(0, 122, 255, 0.3);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 122, 255, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.1);
}

/* Tech Stack Enhancement */
.tech-item {
    background: var(--dark-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.tech-item::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-blue), transparent);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
    opacity: 0.1;
}

.tech-item:hover::before {
    width: 200px;
    height: 200px;
}

.tech-item:hover {
    transform: translateY(-5px) scale(1.05);
    border-color: var(--primary-blue);
    box-shadow: 0 10px 30px rgba(0, 122, 255, 0.2);
}

/* Scroll Animations Enhancement */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--dark-surface);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-orange));
    border-radius: var(--radius-sm);
    border: 2px solid var(--dark-surface);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--accent-orange), var(--primary-blue));
}

/* Selection Styles */
::selection {
    background: var(--primary-blue);
    color: white;
}

::-moz-selection {
    background: var(--primary-blue);
    color: white;
}

/* Responsive Design Enhancements */
@media (max-width: 1024px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 3rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .section-header h2 {
        font-size: 2rem;
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .color-palette {
        justify-content: center;
    }
    
    .color-chip {
        width: 100px;
        height: 100px;
    }
}

/* Performance Optimizations */
.gpu-accelerated {
    transform: translateZ(0);
    will-change: transform;
    backface-visibility: hidden;
}

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