/* CSS Reset and Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Corporate and Professional */
    --primary-dark: #0a0a0a;
    --primary-navy: #1a1a2e;
    --accent-blue: #0066cc;
    --accent-cyan: #00ccff;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --surface-dark: #151515;
    --surface-darker: #0f0f0f;
    --border-subtle: #333333;
    --gradient-primary: linear-gradient(135deg, #0066cc 0%, #0044aa 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #0a0a0a 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --section-padding: 120px 0;
    --container-padding: 0 2rem;
    --grid-gap: 2rem;
    --nav-height: 80px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-subtle: 0 2px 20px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 8px 40px rgba(0, 0, 0, 0.15);
    --shadow-strong: 0 16px 60px rgba(0, 0, 0, 0.2);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--primary-dark);
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* Language Switcher */
.language-switcher {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1001;
    display: flex;
    gap: 5px;
}

.lang-btn {
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.8);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: var(--transition-fast);
    backdrop-filter: blur(10px);
}

.lang-btn.active,
.lang-btn:hover {
    background: var(--accent-blue);
    color: var(--text-primary);
    border-color: var(--accent-blue);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    transition: var(--transition-smooth);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
}

.navbar-brand .logo {
    height: 40px;
    width: auto;
}

.navbar-nav {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
}

.navbar-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition-fast);
    position: relative;
}

.navbar-nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: var(--transition-fast);
}

.navbar-nav a:hover {
    color: var(--text-primary);
}

.navbar-nav a:hover::after {
    width: 100%;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

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

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-dark);
    z-index: -2;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><circle fill="%23ffffff" fill-opacity="0.02" cx="30" cy="30" r="1"/></g></svg>');
    opacity: 0.3;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: var(--font-weight-bold);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title .subtitle {
    display: block;
    font-size: 0.6em;
    font-weight: var(--font-weight-medium);
    color: var(--accent-blue);
    margin-top: 0.5rem;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--accent-blue);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.5rem;
}

.cta-button {
    display: inline-block;
    padding: 18px 40px;
    background: var(--gradient-primary);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition-smooth);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

.scroll-line {
    width: 2px;
    height: 60px;
    background: var(--accent-blue);
    margin: 0 auto;
    position: relative;
    opacity: 0.6;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 30px;
    background: var(--accent-cyan);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(30px); opacity: 0; }
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    /* ensure headers are visible when scrolled to (account for fixed navbar) */
    scroll-margin-top: var(--nav-height);
    position: relative;
    z-index: 100; /* ensure header sits above earlier absolute elements */
}

.section-header h2 {
    display: inline-block;
    /*background: var(--surface-dark);*/
    padding: 0.5rem 1.2rem;
    color: var(--text-primary);
    /* no rounded corners per design */
    /*box-shadow: 0 6px 30px rgba(0,0,0,0.45);*/
    line-height: 1.1;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Expertise Section */
.expertise {
    padding: var(--section-padding);
    /* background handled by full-width pseudo-element to ensure full-bleed band */
    position: relative;
    overflow: visible;
}

.expertise::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 100vw; /* full viewport width */
    top: 0;
    bottom: 0;
    background: var(--surface-dark);
    z-index: 0; /* behind content but above hero background */
}

.expertise > .container {
    position: relative;
    z-index: 1; /* ensure visible above the pseudo-element */
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--grid-gap);
    margin-top: 3rem;
}

.expertise-card {
    background: var(--surface-darker);
    border: 1px solid var(--border-subtle);
    padding: 2.5rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-smooth);
    transform-origin: left;
}

.expertise-card:hover::before {
    transform: scaleX(1);
}

.expertise-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-medium);
}

.card-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.card-icon {
    width: 50px;
    height: 50px;
    color: var(--accent-blue);
    flex-shrink: 0;
}

.card-icon svg {
    width: 100%;
    height: 100%;
}

.card-header h3 {
    font-size: 1.4rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    line-height: 1.3;
}

.card-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-stack span {
    padding: 0.4rem 0.8rem;
    background: rgba(0, 102, 204, 0.1);
    color: var(--accent-cyan);
    font-size: 0.85rem;
    font-weight: var(--font-weight-medium);
    border: 1px solid rgba(0, 102, 204, 0.2);
}

/* Solutions Section */
.solutions {
    padding: var(--section-padding);
    background: var(--primary-dark);
}

.solutions-grid {
    display: flex;
    flex-direction: column;
    gap: 5rem;
    margin-top: 3rem;
}

.solution-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.solution-item.reverse {
    direction: rtl;
}

.solution-item.reverse > * {
    direction: ltr;
}

.solution-content h3 {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.solution-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

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

.features-list li {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    position: relative;
    padding-left: 2rem;
}

.features-list li:last-child {
    border-bottom: none;
}

.features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: var(--font-weight-bold);
}

.solution-image {
    background: var(--surface-darker);
    border: 1px solid var(--border-subtle);
    padding: 2rem;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Code Preview */
.code-preview {
    width: 100%;
    background: #1a1a1a;
    border: 1px solid #333;
    font-family: 'Monaco', 'Consolas', monospace;
}

.code-header {
    padding: 0.8rem 1rem;
    background: #2a2a2a;
    border-bottom: 1px solid #333;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.code-content {
    padding: 1.5rem;
}

.code-content pre {
    color: var(--accent-cyan);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

/* Dashboard Preview */
.dashboard-preview {
    width: 100%;
    background: var(--surface-darker);
    border: 1px solid var(--border-subtle);
}

.dashboard-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dashboard-title {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.dashboard-stats {
    display: flex;
    gap: 1rem;
}

.dashboard-stats .stat {
    font-size: 0.8rem;
    color: var(--accent-blue);
}

.dashboard-content {
    padding: 1.5rem;
}

.chart-placeholder {
    height: 120px;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.1) 0%, rgba(0, 204, 255, 0.1) 100%);
    margin-bottom: 1rem;
    position: relative;
}

.chart-placeholder::after {
    content: 'Real-time Analytics';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--accent-blue);
    font-size: 0.9rem;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
}

.metric {
    padding: 0.8rem;
    background: rgba(0, 102, 204, 0.05);
    border: 1px solid rgba(0, 102, 204, 0.1);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Integration Diagram */
.integration-diagram {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 1rem;
}

.system-box {
    padding: 1.5rem 1rem;
    text-align: center;
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    flex: 1;
}

.system-box.legacy {
    background: rgba(128, 128, 128, 0.1);
    color: var(--text-muted);
    border: 1px solid var(--border-subtle);
}

.system-box.api {
    background: rgba(0, 102, 204, 0.1);
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
}

.system-box.modern {
    background: rgba(0, 204, 255, 0.1);
    color: var(--accent-cyan);
    border: 1px solid var(--accent-cyan);
}

.connector {
    width: 40px;
    height: 2px;
    background: var(--accent-blue);
    position: relative;
}

.connector::after {
    content: '';
    position: absolute;
    right: -5px;
    top: -3px;
    width: 0;
    height: 0;
    border-left: 8px solid var(--accent-blue);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
}

/* Experience Section */
.experience {
    padding: var(--section-padding);
    background: var(--surface-dark);
}

.experience-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.clients-showcase h3,
.achievements h3 {
    font-size: 1.6rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.sectors-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.sector {
    padding: 1.5rem;
    background: var(--surface-darker);
    border: 1px solid var(--border-subtle);
    transition: var(--transition-smooth);
}

.sector:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.sector-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.sector h4 {
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.sector p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.achievement {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--surface-darker);
    border: 1px solid var(--border-subtle);
}

.achievement-number {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--accent-blue);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.achievement-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Contact Section */
.contact {
    padding: var(--section-padding);
    background: var(--primary-dark);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 2rem;
}

.contact-info h2 {
    font-size: 2.2rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.contact-info p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 3rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-icon {
    font-size: 1.5rem;
    min-width: 2rem;
}

.contact-text h4 {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

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

/* Contact Form */
.contact-form-wrapper {
    background: var(--surface-darker);
    padding: 3rem;
    border: 1px solid var(--border-subtle);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem 0;
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--border-subtle);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-smooth);
    outline: none;
}

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

.form-group label {
    position: absolute;
    top: 1rem;
    left: 0;
    color: var(--text-muted);
    font-size: 1rem;
    transition: var(--transition-smooth);
    pointer-events: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-bottom-color: var(--accent-blue);
}

.form-group input:focus + label,
.form-group select:focus + label,
.form-group textarea:focus + label,
.form-group input:valid + label,
.form-group select:valid + label,
.form-group textarea:valid + label {
    transform: translateY(-1.5rem) scale(0.8);
    color: var(--accent-blue);
}

.form-group select {
    cursor: pointer;
}

.form-group select option {
    background: var(--surface-darker);
    color: var(--text-primary);
}

.submit-btn {
    padding: 1.2rem 2rem;
    background: var(--gradient-primary);
    color: var(--text-primary);
    border: none;
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition-smooth);
    margin-top: 1rem;
}

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

/* Footer */
.footer {
    background: var(--surface-darker);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-subtle);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand .footer-logo {
    height: 40px;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 400px;
}

.footer-links h4,
.footer-contact h4 {
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
    margin-bottom: 1rem;
}

.footer-links ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

.footer-contact p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.social-links {
    margin-top: 1rem;
    display: flex;
    gap: 1rem;
}

.social-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.social-links a:hover {
    color: var(--accent-blue);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .navbar-nav {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .solution-item,
    .contact-content,
    .experience-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .solution-item.reverse {
        direction: ltr;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 0;
        --container-padding: 0 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .sectors-grid,
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: 2rem;
    }
    
    .language-switcher {
        top: 10px;
        right: 10px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .expertise-card,
    .contact-form-wrapper {
        padding: 1.5rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .scroll-line::after {
        animation: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --text-secondary: #ffffff;
        --border-subtle: #666666;
    }
}

/* Print styles */
@media print {
    .navbar,
    .language-switcher,
    .scroll-indicator,
    .contact-form {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}