/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #0ea5e9;
    --accent: #f472b6;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --dark-lighter: #334155;
    --light: #f8fafc;
    --light-dim: #e2e8f0;
    --gray: #94a3b8;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
    --gradient-text: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary) 50%, var(--accent) 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 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);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ========================================
   Utility Classes
   ======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

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

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary-light);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.1rem;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
}

.nav-logo img {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-weight: 500;
    color: var(--gray);
}

.nav-links a:hover {
    color: var(--light);
}

.nav-cta {
    background: var(--gradient);
    padding: 10px 20px !important;
    border-radius: var(--radius);
    color: white !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.3), transparent),
        radial-gradient(ellipse 60% 40% at 80% 50%, rgba(14, 165, 233, 0.2), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(244, 114, 182, 0.15), transparent);
}

.hero-particles {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.1) 1px, transparent 1px),
        radial-gradient(circle at 80% 70%, rgba(255,255,255,0.1) 1px, transparent 1px),
        radial-gradient(circle at 40% 80%, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 100px 100px, 150px 150px, 200px 200px;
    animation: particles 20s linear infinite;
}

@keyframes particles {
    0% { transform: translateY(0); }
    100% { transform: translateY(-100px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-light);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 40px;
    max-width: 560px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray);
}

.hero-image {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    z-index: 0;
    opacity: 0.2;
}

.floating-logo {
    width: 500px;
    height: auto;
    animation: float 6s ease-in-out infinite;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    transform: translateZ(0);
    will-change: transform;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) perspective(1000px); }
    50% { transform: translateY(-20px) perspective(1000px); }
}

/* ========================================
   Sections Common
   ======================================== */
section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 64px;
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition);
}

.section-header.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray);
}

/* ========================================
   Services Section
   ======================================== */
.services {
    background: var(--dark);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--dark-lighter), transparent);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--dark-light);
    border: 1px solid var(--dark-lighter);
    border-radius: var(--radius-lg);
    padding: 32px;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition);
}

.service-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.service-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.service-card.featured {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
    border-color: var(--primary);
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    border-radius: var(--radius);
    margin-bottom: 20px;
    color: white;
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.7;
}

.service-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 4px 12px;
    background: var(--gradient);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

/* ========================================
   Partners Section
   ======================================== */
.partners {
    background: var(--dark-light);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.partner-card {
    background: var(--dark);
    border: 1px solid var(--dark-lighter);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition);
}

.partner-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.partner-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.partner-logo {
    margin-bottom: 20px;
}

.partner-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--gradient);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
}

.partner-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.partner-card p {
    color: var(--gray);
    font-size: 0.9rem;
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
    position: relative;
    overflow: hidden;
}

.cta-background {
    position: absolute;
    inset: 0;
}

.cta-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 100% 100% at 50% 100%, rgba(99, 102, 241, 0.2), transparent 70%),
        radial-gradient(ellipse 80% 60% at 30% 50%, rgba(14, 165, 233, 0.15), transparent);
}

.cta-content {
    position: relative;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.cta p {
    font-size: 1.125rem;
    color: var(--gray);
    margin-bottom: 40px;
}

.cta-buttons {
    margin-bottom: 24px;
}

.cta-email {
    font-size: 0.95rem;
    color: var(--gray);
}

.cta-email a {
    color: var(--primary-light);
}

.cta-email a:hover {
    text-decoration: underline;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--dark);
    border-top: 1px solid var(--dark-lighter);
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 64px;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    height: 50px;
    width: auto;
    margin-bottom: 16px;
}

.footer-brand h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.footer-brand p {
    color: var(--gray);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
    color: var(--light);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column a {
    color: var(--gray);
    font-size: 0.95rem;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 40px;
    border-top: 1px solid var(--dark-lighter);
}

.footer-bottom p {
    color: var(--gray);
    font-size: 0.875rem;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .hero-image {
        opacity: 0.08;
    }
    
    .floating-logo {
        width: 400px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 100px 20px 60px;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 32px;
    }
    
    .hero-image {
        display: none;
    }
    
    section {
        padding: 80px 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-stats {
        justify-content: space-between;
    }
    
    .stat {
        flex: 1;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Animation Delays for Staggered Effects
   ======================================== */
.service-card:nth-child(1) { transition-delay: 0.1s; }
.service-card:nth-child(2) { transition-delay: 0.2s; }
.service-card:nth-child(3) { transition-delay: 0.3s; }
.service-card:nth-child(4) { transition-delay: 0.4s; }

.partner-card:nth-child(1) { transition-delay: 0.1s; }
.partner-card:nth-child(2) { transition-delay: 0.2s; }
.partner-card:nth-child(3) { transition-delay: 0.3s; }