/* ===================================
   CSS Variables
   =================================== */
:root {
    /* Colors */
    --primary-color: #28a745;
    --primary-dark: #218838;
    --primary-light: #34ce57;
    --secondary-color: #1a237e;
    --dark-bg: #0a0e27;
    --darker-bg: #050814;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --text-lighter: #999999;
    --white: #ffffff;
    --light-bg: #f8f9fa;
    --border-color: #e0e0e0;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #28a745 0%, #34ce57 100%);
    --gradient-dark: linear-gradient(135deg, #1a237e 0%, #283593 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(26, 35, 126, 0.95) 0%, rgba(10, 14, 39, 0.95) 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Spacing */
    --section-padding: 100px;
    --container-padding: 20px;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', sans-serif;
}

/* ===================================
   Reset & Base Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-dark);
    background: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-dark);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

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

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 600;
    border: 2px solid transparent;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-normal);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
}

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

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

.btn-lg {
    padding: 16px 36px;
    font-size: 18px;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

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

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    transition: var(--transition-normal);
}

.navbar.scrolled .logo {
    color: var(--text-dark);
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 20px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    border-radius: 25px;
    transition: var(--transition-normal);
}

.navbar.scrolled .nav-link {
    color: var(--text-dark);
}

.nav-link:hover,
.nav-link.active {
    background: rgba(40, 167, 69, 0.15);
    color: var(--primary-color);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: var(--white);
    transition: var(--transition-normal);
}

.navbar.scrolled .mobile-toggle span {
    background: var(--text-dark);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: var(--gradient-overlay);
}

.hero-particles {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(40, 167, 69, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(26, 35, 126, 0.1) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    text-align: center;
    margin: 0 auto;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 24px;
    line-height: 1.2;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    padding: 40px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item {
    text-align: center;
}

.stat-item h3 {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 8px;
    font-weight: 800;
}

.stat-item p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    margin: 0;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% { opacity: 0; transform: translateX(-50%) translateY(0); }
    50% { opacity: 1; transform: translateX(-50%) translateY(8px); }
}

/* ===================================
   Sections
   =================================== */
section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(40, 167, 69, 0.1);
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* ===================================
   About Section
   =================================== */
.about-section {
    background: var(--light-bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content h3 {
    font-size: 2rem;
    margin-bottom: 24px;
    color: var(--text-dark);
}

.about-features {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.feature-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 4px;
}

.feature-item h4 {
    margin-bottom: 4px;
    color: var(--text-dark);
}

.feature-item p {
    margin: 0;
    font-size: 0.95rem;
}

.visual-card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.tech-stack {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px;
    background: var(--light-bg);
    border-radius: 12px;
    transition: var(--transition-normal);
}

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

.tech-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.tech-item span {
    font-weight: 600;
    color: var(--text-dark);
}

/* ===================================
   Services Section
   =================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon i {
    font-size: 2rem;
    color: var(--white);
}

.service-card h3 {
    margin-bottom: 16px;
    color: var(--text-dark);
}

.service-card > p {
    margin-bottom: 24px;
    color: var(--text-light);
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-light);
    font-size: 0.95rem;
}

.service-features i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

/* ===================================
   Solutions Section
   =================================== */
.solutions-section {
    background: var(--light-bg);
}

.solutions-tabs {
    max-width: 1000px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
    justify-content: center;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
}

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

.tab-btn.active {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.solution-content {
    background: var(--white);
    padding: 50px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.solution-text h3 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.solution-text p {
    font-size: 1.1rem;
    margin-bottom: 24px;
}

.solution-text ul {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.solution-text li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.05rem;
}

.solution-text li i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.solution-visual {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.metric-card {
    text-align: center;
    padding: 30px 20px;
    background: var(--light-bg);
    border-radius: 16px;
    border: 2px solid transparent;
    transition: var(--transition-normal);
}

.metric-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.metric-card h4 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.metric-card p {
    color: var(--text-light);
    margin: 0;
    font-weight: 600;
}

/* ===================================
   Technologies Section
   =================================== */
.tech-section {
    background: var(--dark-bg);
    color: var(--white);
}

.tech-section .section-tag {
    background: rgba(40, 167, 69, 0.2);
}

.tech-section h2,
.tech-section p {
    color: var(--white);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.tech-category h4 {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 24px;
    text-align: center;
}

.tech-logos {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.tech-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
    min-width: 100px;
}

.tech-logo:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.tech-logo i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.tech-logo span {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    font-size: 0.9rem;
}

/* ===================================
   Contact Section
   =================================== */
.contact-section {
    background: var(--light-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.info-card {
    background: var(--white);
    padding: 30px;
    border-radius: 16px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.info-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.info-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.info-card h4 {
    margin-bottom: 12px;
}

.info-card p {
    margin-bottom: 4px;
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.social-links a {
    width: 48px;
    height: 48px;
    background: var(--white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--text-dark);
    transition: var(--transition-normal);
}

.social-links a:hover {
    background: var(--gradient-primary);
    color: var(--white);
    transform: translateY(-3px);
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 24px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 20px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition-normal);
    background: var(--white);
}

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

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

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--darker-bg);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.footer-logo span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.footer-col h4 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-fast);
}

.footer-col ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition-normal);
}

.footer-social a:hover {
    background: var(--gradient-primary);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
    
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .mobile-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        padding: 40px 20px;
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        color: var(--text-dark);
        width: 100%;
        text-align: center;
        padding: 15px;
    }
    
    .nav-actions .btn {
        display: none;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
        padding: 30px 20px;
    }
    
    .stat-item h3 {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-stack {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .solution-visual {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    .service-card,
    .solution-content,
    .contact-form {
        padding: 30px 20px;
    }
}