/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Colors */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;

    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;

    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --bg-card: #ffffff;

    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Layout */
    --container-width: 1200px;
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

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

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

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

section {
    padding: var(--spacing-2xl) 0;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 50px;
    width: auto;
    transition: transform var(--transition-base);
}

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

.logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.02em;
}

.logo-subtitle {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: -0.25rem;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-color);
    background: var(--bg-secondary);
}

.nav-link.active {
    color: var(--primary-color);
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-align: center;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

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

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

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

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

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: var(--font-size-base);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    padding-top: 8rem;
    padding-bottom: 4rem;
    background: linear-gradient(135deg, #f9fafb 0%, #e5e7eb 100%);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-2xl);
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-align: center;
}

/* ===================================
   Section Headers
   =================================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: 2rem;
    margin-bottom: var(--spacing-md);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

/* ===================================
   Services Section
   =================================== */
.services {
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    position: relative;
    padding: var(--spacing-xl);
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-base);
}

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

.service-card.featured {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-color: var(--primary-color);
    color: white;
}

.service-card.featured .service-title,
.service-card.featured .service-description,
.service-card.featured .service-features li {
    color: white;
}

.featured-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: 0.375rem 0.75rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: 2rem;
}

.service-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.service-card.featured .service-icon {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.service-icon svg {
    width: 32px;
    height: 32px;
}

.service-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.service-description {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.service-features {
    list-style: none;
    padding-left: 0;
}

.service-features li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.service-features li:before {
    content: "✓ ";
    color: var(--secondary-color);
    font-weight: bold;
    margin-right: var(--spacing-xs);
}

.service-card.featured .service-features li:before {
    color: white;
}

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

.solutions-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-2xl);
    align-items: center;
}

.solutions-description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
}

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

.solution-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.solution-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--secondary-color);
    color: white;
    border-radius: 50%;
    font-weight: bold;
    flex-shrink: 0;
}

.solution-icon svg {
    width: 12px;
    height: 12px;
}

.solution-item h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 0.25rem;
}

.solution-item p {
    margin: 0;
    font-size: var(--font-size-sm);
}

.solutions-visual {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.visual-card {
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.visual-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.visual-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.visual-icon svg {
    width: 36px;
    height: 36px;
}

.visual-card h4 {
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

/* ===================================
   About Section
   =================================== */
.about {
    background: white;
}

.about-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-card {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: var(--border-radius-lg);
    color: white;
    box-shadow: var(--shadow-xl);
}

.about-card h3 {
    font-size: var(--font-size-sm);
    font-weight: 500;
    opacity: 0.9;
    margin-bottom: var(--spacing-xs);
    color: white;
}

.partner-name {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: white;
}

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

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
}

.feature-icon {
    font-size: 1.5rem;
}

.about-description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.about-locations {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--border-color);
}

.about-locations h4 {
    margin-bottom: var(--spacing-md);
}

.location-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.location-tag {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-radius: 2rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* ===================================
   CTA Section
   =================================== */
.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    color: white;
    margin-bottom: var(--spacing-md);
}

.cta-description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.9);
}

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

.contact-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-2xl);
}

.contact-form {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.info-card {
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.info-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.info-card h4 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
}

.info-card p {
    margin: 0;
    color: var(--text-secondary);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo-img {
    height: 20px;
    width: auto;
    margin-bottom: var(--spacing-sm);
    filter: brightness(0) invert(1);
}

.footer-section h4 {
    color: white;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

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

.footer-links a:hover {
    color: white;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.footer-partnership {
    color: rgba(255, 255, 255, 0.5);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: white;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .hero {
        padding-top: 6rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .services-grid,
    .solutions-wrapper,
    .about-wrapper {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .solutions-visual {
        grid-template-columns: 1fr;
    }

    h2 {
        font-size: var(--font-size-3xl);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .stat-number {
        font-size: var(--font-size-3xl);
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

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

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

/* Smooth scrolling for Safari */
@media screen and (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}