/* Modern CSS Variables */
:root {
    --primary: #6366f1;
    --secondary: #f59e0b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --light: #f8fafc;
    --dark: #1e293b;
    --white: #ffffff;
    --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;
    
    --font-primary: 'Inter', sans-serif;
    --font-secondary: 'Poppins', sans-serif;
    
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 1.5rem;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 600;
    line-height: 1.2;
    color: var(--gray-900);
}

/* Loading Spinner */
#spinner {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease-out, visibility 0s linear 0.3s;
    z-index: 9999;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.9);
}

#spinner.show {
    transition: opacity 0.3s ease-out, visibility 0s linear 0s;
    visibility: visible;
    opacity: 1;
}

#spinner .spinner-grow {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(0.8); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 1; }
}

/* Modern Buttons */
.btn {
    font-weight: 500;
    font-family: var(--font-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    text-transform: none;
    letter-spacing: 0.025em;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    border-color: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5b21b6, var(--primary));
    border-color: #5b21b6;
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary), #fb923c);
    border-color: var(--secondary);
    color: var(--white);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #d97706, var(--secondary));
    border-color: #d97706;
}

.btn-outline-primary {
    border-color: var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-outline-secondary {
    border-color: var(--secondary);
    color: var(--secondary);
    background: transparent;
}

.btn-outline-secondary:hover {
    background: var(--secondary);
    color: var(--white);
}

.btn-light {
    background: var(--white);
    border-color: var(--gray-200);
    color: var(--gray-700);
}

.btn-light:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    color: var(--gray-900);
}

/* Button Sizes */
.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    border-radius: var(--border-radius-lg);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border-radius: calc(var(--border-radius) * 0.75);
}

/* Rounded Pills */
.rounded-pill {
    border-radius: 50rem !important;
}

/* Icon Buttons */
.btn-square {
    width: 44px;
    height: 44px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
}

.btn-sm-square {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: calc(var(--border-radius) * 0.75);
}

.btn-lg-square {
    width: 52px;
    height: 52px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-lg);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

/* Modern Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.navbar-brand {
    font-family: var(--font-secondary);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary);
}

.navbar-nav .nav-link {
    font-weight: 500;
    color: var(--gray-700);
    padding: 0.5rem 1rem;
    margin: 0 0.25rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

/* Hero Section */
.hero-header {
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    color: var(--white);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.hero-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="white" opacity="0.1"><polygon points="0,0 1000,100 1000,0"/></svg>');
    background-size: cover;
    background-position: bottom;
}

.hero-header .container {
    position: relative;
    z-index: 2;
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
}

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

.card-body {
    padding: 2rem;
}

/* Service Items */
.service-item {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.service-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
}

/* Portfolio */
.portfolio-item {
    overflow: hidden;
    border-radius: var(--border-radius-lg);
}

.portfolio-item img {
    transition: var(--transition);
}

.portfolio-item:hover img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(99, 102, 241, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

/* Testimonials */
.testimonial-item {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin: 1rem;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.testimonial-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Sections */
.section-title {
    position: relative;
    display: inline-block;
    padding: 0 1rem;
    margin-bottom: 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--secondary);
}

.section-title::before,
.section-title::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 50px;
    height: 2px;
    background: var(--secondary);
}

.section-title::before {
    right: 100%;
    margin-right: 1rem;
}

.section-title::after {
    left: 100%;
    margin-left: 1rem;
}

/* Breadcrumb */
.breadcrumb {
    background: var(--gray-100);
    padding: 1rem 0;
    border-radius: 0;
}

.breadcrumb-item a {
    color: var(--gray-600);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb-item a:hover {
    color: var(--primary);
}

.breadcrumb-item.active {
    color: var(--gray-900);
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 3rem 0 1rem;
}

.footer h5 {
    color: var(--white);
    margin-bottom: 1rem;
}

.footer a {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

.footer a:hover {
    color: var(--primary);
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-header {
        padding: 4rem 0;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .service-item {
        padding: 1.5rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
}

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
}

.bg-gradient-secondary {
    background: linear-gradient(135deg, var(--secondary), #fb923c);
}

.shadow-custom {
    box-shadow: var(--shadow-lg);
}

.border-radius-custom {
    border-radius: var(--border-radius-lg);
}

/* Swiper Customization */
.swiper-pagination-bullet {
    background: var(--primary);
    opacity: 0.5;
}

.swiper-pagination-bullet-active {
    opacity: 1;
}

.swiper-button-next,
.swiper-button-prev {
    color: var(--primary);
}

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

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

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

::-webkit-scrollbar-thumb:hover {
    background: #5b21b6;
}