/* 
 * AI Analytics LLC - Optimized Master Stylesheet
 * Version: 2.0 - Performance & Animation Optimized
 * This file consolidates all custom styles to reduce HTTP requests
 */

/* ===== CSS VARIABLES & ROOT DEFINITIONS ===== */
:root {
    /* Primary Brand Colors */
    --primary-blue: #4a90e2;
    --secondary-blue: #357abd;
    --dark-blue: #2c5282;
    --accent-blue: #1e3a5f;
    
    /* Background Colors */
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --bg-gradient: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-white) 50%, var(--bg-light) 100%);
    
    /* Text Colors */
    --text-dark: #2c3e50;
    --text-muted: #6c757d;
    --text-light: #ffffff;
    
    /* Shadow & Effects */
    --shadow-light: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-medium: 0 10px 30px rgba(0,0,0,0.1);
    --shadow-heavy: 0 20px 40px rgba(0,0,0,0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-small: 8px;
    --radius-medium: 15px;
    --radius-large: 50px;
}

/* ===== PERFORMANCE OPTIMIZATIONS ===== */
/* Use transform and opacity for smooth animations */
*, *::before, *::after {
    box-sizing: border-box;
}

/* Enable hardware acceleration for animations */
.animated-element,
.hero-section,
.service-card,
.btn-primary,
.navbar-collapse a {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* ===== HERO SECTION ANIMATIONS ===== */
.hero-section {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 50%, var(--dark-blue) 100%);
    color: var(--text-light);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
    animation: heroGradientShift 15s ease-in-out infinite;
}

@keyframes heroGradientShift {
    0%, 100% {
        background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 50%, var(--dark-blue) 100%);
    }
    25% {
        background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--dark-blue) 50%, var(--accent-blue) 100%);
    }
    50% {
        background: linear-gradient(135deg, var(--dark-blue) 0%, var(--accent-blue) 50%, var(--primary-blue) 100%);
    }
    75% {
        background: linear-gradient(135deg, var(--accent-blue) 0%, var(--primary-blue) 50%, var(--secondary-blue) 100%);
    }
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.05) 0%, transparent 50%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="data-grid" width="20" height="20" patternUnits="userSpaceOnUse"><rect width="20" height="20" fill="none" stroke="rgba(255,255,255,0.08)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23data-grid)"/></svg>');
    pointer-events: none;
    animation: overlayFloat 20s ease-in-out infinite;
}

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

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    animation: fadeInUp 1s ease-out;
}

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

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    animation: titleGlow 3s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    from { text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }
    to { text-shadow: 2px 2px 8px rgba(255,255,255,0.2), 2px 2px 4px rgba(0,0,0,0.3); }
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.3s both;
}

/* ===== ENHANCED BUTTON ANIMATIONS ===== */
.btn-primary {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    border: none;
    padding: 15px 30px;
    border-radius: var(--radius-large);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 1s ease-out 0.6s both;
}

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

.btn-primary:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 25px rgba(30, 60, 114, 0.4);
}

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

.btn-primary:active {
    transform: translateY(-1px) scale(1.02);
}

/* ===== SERVICE SECTION BACKGROUNDS ===== */
.service-section {
    padding: 80px 0;
    background: var(--bg-gradient);
    position: relative;
}

.service-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(79,172,254,0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(79,172,254,0.03) 0%, transparent 50%);
    pointer-events: none;
    animation: backgroundShimmer 8s ease-in-out infinite;
}

@keyframes backgroundShimmer {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

/* ===== ENHANCED SERVICE CARDS ===== */
.service-card {
    background: var(--bg-white);
    border-radius: var(--radius-medium);
    padding: 40px 30px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-smooth);
    height: 100%;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue), var(--dark-blue));
    transform: scaleX(0);
    transition: transform var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-12px) rotate(1deg);
    box-shadow: var(--shadow-heavy);
}

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

.service-card .icon {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
    transition: all var(--transition-smooth);
}

.service-card:hover .icon {
    color: var(--secondary-blue);
    transform: scale(1.1) rotate(10deg);
}

/* ===== NAVBAR OPTIMIZATIONS ===== */
.custom-navbar {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%) !important;
    backdrop-filter: blur(10px);
    border-bottom: 2px solid rgba(255,255,255,0.1);
    box-shadow: var(--shadow-light);
    transition: all var(--transition-smooth);
}

.navbar-brand img {
    transition: transform var(--transition-smooth);
}

.navbar-brand:hover img {
    transform: scale(1.1) rotate(5deg);
}

/* Mobile Menu Enhancements */
@media (max-width: 991px) {
    .navbar-collapse {
        background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%) !important;
        border-radius: var(--radius-small) !important;
        padding: 20px !important;
        margin-top: 10px !important;
        box-shadow: 0 4px 15px rgba(0,0,0,0.2) !important;
        animation: slideDown 0.3s ease-out;
    }
    
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .navbar-collapse > div > div > a {
        transition: all var(--transition-fast);
        position: relative;
        overflow: hidden;
    }
    
    .navbar-collapse > div > div > a::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
        transition: left var(--transition-fast);
    }
    
    .navbar-collapse > div > div > a:hover {
        transform: translateY(-2px) scale(1.02) !important;
        box-shadow: 0 4px 12px rgba(255,255,255,0.3) !important;
    }
    
    .navbar-collapse > div > div > a:hover::before {
        left: 100%;
    }
}

/* ===== FEATURE ITEMS ANIMATIONS ===== */
.feature-item {
    text-align: center;
    padding: 30px 20px;
    margin-bottom: 30px;
    transition: all var(--transition-smooth);
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-item .icon {
    font-size: 2.5rem;
    color: var(--secondary-blue);
    margin-bottom: 20px;
    transition: all var(--transition-smooth);
}

.feature-item:hover .icon {
    color: var(--primary-blue);
    transform: scale(1.2) rotateY(360deg);
}

/* ===== PROCESS CARDS ===== */
.process-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-light);
    border-radius: var(--radius-medium);
    padding: 30px;
    margin-bottom: 20px;
    text-align: center;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.process-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(45deg);
    transition: all var(--transition-slow);
    opacity: 0;
}

.process-card:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 0 15px 30px rgba(102, 126, 234, 0.3);
}

.process-card:hover::before {
    opacity: 1;
    top: -100%;
    left: -100%;
}

/* ===== BREADCRUMB STYLING ===== */
.breadcrumb-nav {
    margin-top: 76px;
    background: var(--bg-light);
    padding: 15px 0;
    border-bottom: 1px solid #dee2e6;
    position: relative;
}

.breadcrumb-nav::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue));
    transform: scaleX(0);
    animation: breadcrumbLine 2s ease-out 0.5s forwards;
}

@keyframes breadcrumbLine {
    to { transform: scaleX(1); }
}

.breadcrumb-item a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
}

.breadcrumb-item a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-blue);
    transition: width var(--transition-fast);
}

.breadcrumb-item a:hover {
    color: var(--text-dark);
    transform: translateY(-1px);
}

.breadcrumb-item a:hover::after {
    width: 100%;
}

/* ===== RESPONSIVE OPTIMIZATIONS ===== */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1.1rem;
    }
    
    .service-section {
        padding: 60px 0;
    }
    
    .service-card:hover {
        transform: translateY(-8px);
    }
}

/* ===== SCROLL ANIMATIONS ===== */
@media (prefers-reduced-motion: no-preference) {
    .animate-on-scroll {
        opacity: 0;
        transform: translateY(30px);
        transition: all 0.8s ease-out;
    }
    
    .animate-on-scroll.animate {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== LOADING OPTIMIZATIONS ===== */
/* Preload critical images and fonts */
.preload-fonts {
    font-family: 'Roboto', Arial, sans-serif;
    font-weight: 300, 400, 500, 600, 700;
    opacity: 0;
    position: absolute;
    pointer-events: none;
}

/* ===== CTA SECTION ===== */
.cta-section {
    background: linear-gradient(135deg, var(--text-dark) 0%, #34495e 100%);
    color: var(--text-light);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 40%, rgba(74, 144, 226, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(53, 122, 189, 0.1) 0%, transparent 50%);
    animation: ctaShimmer 6s ease-in-out infinite;
}

@keyframes ctaShimmer {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* ===== ACCESSIBILITY IMPROVEMENTS ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for accessibility */
.btn-primary:focus,
.breadcrumb-item a:focus,
.navbar-collapse a:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* ===== PRINT STYLES ===== */
@media print {
    .hero-section,
    .navbar,
    .btn-primary {
        background: none !important;
        color: black !important;
    }
    
    .service-card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
}