/* ===== CSS VARIABLES ===== */
:root {
    /* Light Mode Colors */
    --light-bg-primary: #ffffff;
    --light-bg-secondary: #f8f9fa;
    --light-text-primary: #1a1a1a;
    --light-text-secondary: #6c757d;
    --light-accent: #6366f1;
    --light-accent-hover: #4f46e5;
    --light-border: #e9ecef;
    --light-shadow: rgba(0, 0, 0, 0.1);
    
    /* Dark Mode Colors */
    --dark-bg-primary: #0a0a0a;
    --dark-bg-secondary: #111111;
    --dark-bg-tertiary: #1a1a1a;
    --dark-text-primary: #ffffff;
    --dark-text-secondary: #a0a0a0;
    --dark-accent: #8b5cf6;
    --dark-accent-hover: #7c3aed;
    --dark-border: #2a2a2a;
    --dark-shadow: rgba(139, 92, 246, 0.2);
    --dark-glow: rgba(139, 92, 246, 0.4);
    
    /* Gradient */
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-alt: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Roboto', 'Helvetica', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Light Mode Styles */
body:not(.dark-mode) {
    background-color: var(--light-bg-primary);
    color: var(--light-text-primary);
}

/* Dark Mode Styles */
body.dark-mode {
    background-color: var(--dark-bg-primary);
    color: var(--dark-text-primary);
}

/* ===== CANVAS BACKGROUND ===== */
#background-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.6;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: all var(--transition-normal);
}

body.dark-mode .header {
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--dark-border);
}

body:not(.dark-mode) .header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--light-border);
    box-shadow: 0 2px 10px var(--light-shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

body.dark-mode .logo-badge {
    background: var(--dark-bg-tertiary);
    color: var(--dark-text-secondary);
    border: 1px solid var(--dark-border);
}

body:not(.dark-mode) .logo-badge {
    background: var(--light-bg-secondary);
    color: var(--light-text-secondary);
    border: 1px solid var(--light-border);
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link {
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

body.dark-mode .nav-link {
    color: var(--dark-text-secondary);
}

body:not(.dark-mode) .nav-link {
    color: var(--light-text-secondary);
}

.nav-link:hover {
    color: var(--dark-accent);
}

body:not(.dark-mode) .nav-link:hover {
    color: var(--light-accent);
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

body.dark-mode .theme-toggle {
    color: var(--dark-text-primary);
    background: var(--dark-bg-tertiary);
}

body:not(.dark-mode) .theme-toggle {
    color: var(--light-text-primary);
    background: var(--light-bg-secondary);
}

.theme-toggle:hover {
    transform: rotate(20deg);
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

body.dark-mode .hero-subtitle {
    color: var(--dark-text-secondary);
}

body:not(.dark-mode) .hero-subtitle {
    color: var(--light-text-secondary);
}

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

/* ===== BUTTONS ===== */
.btn {
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    display: inline-block;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--dark-accent);
    border: 2px solid var(--dark-accent);
}

body:not(.dark-mode) .btn-secondary {
    color: var(--light-accent);
    border-color: var(--light-accent);
}

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

body:not(.dark-mode) .btn-secondary:hover {
    background: var(--light-accent);
    color: white;
}

.btn-full {
    width: 100%;
}

/* ===== SECTION STYLES ===== */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

body.dark-mode .section-subtitle {
    color: var(--dark-text-secondary);
}

body:not(.dark-mode) .section-subtitle {
    color: var(--light-text-secondary);
}

/* ===== SERVICES SECTION ===== */
.services {
    position: relative;
}

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

.service-card {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    cursor: pointer;
}

body.dark-mode .service-card {
    background: rgba(26, 26, 26, 0.6);
    border: 1px solid var(--dark-border);
    backdrop-filter: blur(10px);
}

body:not(.dark-mode) .service-card {
    background: var(--light-bg-secondary);
    border: 1px solid var(--light-border);
    box-shadow: 0 2px 10px var(--light-shadow);
}

.service-card:hover {
    transform: translateY(-5px);
}

body.dark-mode .service-card:hover {
    border-color: var(--dark-accent);
    box-shadow: 0 8px 30px var(--dark-shadow);
}

body:not(.dark-mode) .service-card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.service-description {
    line-height: 1.6;
}

body.dark-mode .service-description {
    color: var(--dark-text-secondary);
}

body:not(.dark-mode) .service-description {
    color: var(--light-text-secondary);
}

/* ===== PARTNERS/SLIDER SECTION ===== */
.partners {
    overflow: hidden;
}

.slider-container {
    margin-top: var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.slider-track {
    display: flex;
    gap: var(--spacing-lg);
    animation: scroll 30s linear infinite;
    width: max-content;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.slider-container:hover .slider-track {
    animation-play-state: paused;
}

.logo-slide {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 180px;
    height: 120px;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

body.dark-mode .logo-slide {
    background: rgba(26, 26, 26, 0.6);
    border: 1px solid var(--dark-border);
}

body:not(.dark-mode) .logo-slide {
    background: var(--light-bg-secondary);
    border: 1px solid var(--light-border);
}

.logo-img {
    max-width: 140px;
    max-height: 60px;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: all var(--transition-normal);
}

body.dark-mode .logo-img {
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.logo-slide:hover {
    transform: scale(1.05);
}

body.dark-mode .logo-slide:hover {
    border-color: var(--dark-accent);
    box-shadow: 0 4px 20px var(--dark-shadow);
}

body:not(.dark-mode) .logo-slide:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.logo-slide:hover .logo-img {
    transform: scale(1.1);
}

body.dark-mode .logo-slide:hover .logo-img {
    filter: brightness(0) invert(1);
    opacity: 1;
}

/* ===== CONTACT SECTION ===== */
.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    align-items: start;
}

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

.contact-info .section-title {
    text-align: left;
}

.contact-description {
    font-size: 1.125rem;
    line-height: 1.6;
}

body.dark-mode .contact-description {
    color: var(--dark-text-secondary);
}

body:not(.dark-mode) .contact-description {
    color: var(--light-text-secondary);
}

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

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
}

body.dark-mode .contact-method {
    background: rgba(26, 26, 26, 0.6);
    border: 1px solid var(--dark-border);
}

body:not(.dark-mode) .contact-method {
    background: var(--light-bg-secondary);
    border: 1px solid var(--light-border);
}

.contact-method i {
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

body.dark-mode .contact-method i {
    color: var(--dark-accent);
}

body:not(.dark-mode) .contact-method i {
    color: var(--light-accent);
}

.contact-method h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.contact-method p {
    font-size: 0.875rem;
}

body.dark-mode .contact-method p {
    color: var(--dark-text-secondary);
}

body:not(.dark-mode) .contact-method p {
    color: var(--light-text-secondary);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    font-size: 1.25rem;
    text-decoration: none;
}

body.dark-mode .social-link {
    background: var(--dark-bg-tertiary);
    color: var(--dark-text-primary);
    border: 1px solid var(--dark-border);
}

body:not(.dark-mode) .social-link {
    background: var(--light-bg-secondary);
    color: var(--light-text-primary);
    border: 1px solid var(--light-border);
}

.social-link:hover {
    transform: translateY(-2px);
}

body.dark-mode .social-link:hover {
    background: var(--dark-accent);
    border-color: var(--dark-accent);
}

body:not(.dark-mode) .social-link:hover {
    background: var(--light-accent);
    color: white;
}

/* ===== CONTACT FORM ===== */
.contact-form-wrapper {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
}

body.dark-mode .contact-form-wrapper {
    background: rgba(26, 26, 26, 0.6);
    border: 1px solid var(--dark-border);
    backdrop-filter: blur(10px);
}

body:not(.dark-mode) .contact-form-wrapper {
    background: var(--light-bg-secondary);
    border: 1px solid var(--light-border);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid;
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

body.dark-mode .form-group input,
body.dark-mode .form-group textarea {
    background: var(--dark-bg-secondary);
    border-color: var(--dark-border);
    color: var(--dark-text-primary);
}

body:not(.dark-mode) .form-group input,
body:not(.dark-mode) .form-group textarea {
    background: var(--light-bg-primary);
    border-color: var(--light-border);
    color: var(--light-text-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--dark-accent);
}

body:not(.dark-mode) .form-group input:focus,
body:not(.dark-mode) .form-group textarea:focus {
    border-color: var(--light-accent);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== FOOTER ===== */
.footer {
    padding: var(--spacing-lg) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

body.dark-mode .footer {
    background: var(--dark-bg-secondary);
    border-top: 1px solid var(--dark-border);
}

body:not(.dark-mode) .footer {
    background: var(--light-bg-secondary);
    border-top: 1px solid var(--light-border);
}

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

.footer-brand p {
    margin-top: 0.5rem;
    font-size: 0.875rem;
}

body.dark-mode .footer-brand p {
    color: var(--dark-text-secondary);
}

body:not(.dark-mode) .footer-brand p {
    color: var(--light-text-secondary);
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-links a {
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

body.dark-mode .footer-links a {
    color: var(--dark-text-secondary);
}

body:not(.dark-mode) .footer-links a {
    color: var(--light-text-secondary);
}

.footer-links a:hover {
    color: var(--dark-accent);
}

body:not(.dark-mode) .footer-links a:hover {
    color: var(--light-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid;
}

body.dark-mode .footer-bottom {
    border-color: var(--dark-border);
}

body:not(.dark-mode) .footer-bottom {
    border-color: var(--light-border);
}

.footer-bottom p {
    font-size: 0.875rem;
}

body.dark-mode .footer-bottom p {
    color: var(--dark-text-secondary);
}

body:not(.dark-mode) .footer-bottom p {
    color: var(--light-text-secondary);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .nav {
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        font-size: 0.875rem;
    }
    
    .hero {
        padding: var(--spacing-lg) 0;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .logo-slide {
        min-width: 150px;
    }
    
    .logo-img {
        max-width: 120px;
        max-height: 50px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header-content {
        flex-wrap: wrap;
    }
    
    .nav {
        width: 100%;
        justify-content: space-between;
        margin-top: var(--spacing-xs);
    }
}