:root {
    --primary-color: #0ea5e9;
    --primary-hover: #0284c7;
    --accent-color: #10b981;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e8e8e8;
    --border-color: #e2e8f0;
    --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);
}

.dark-mode {
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

body:not(.dark-mode) .navbar {
    background: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid var(--border-color);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    font-size: 24px;
    font-weight: 800;
}

.logo-uni {
    color: var(--primary-color);
}

.logo-media {
    color: var(--text-primary);
}

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

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle {
    background: var(--bg-tertiary);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-primary);
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: white;
}

.sun-icon {
    display: none;
}

.dark-mode .sun-icon {
    display: block;
}

.moon-icon {
    display: block;
}

.dark-mode .moon-icon {
    display: none;
}

.cta-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all 0.3s ease;
    border-radius: 2px;
}

.hero {
    padding: 140px 0 80px;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
    background-image: url('attached_assets/stock_images/modern_office_worksp_7b9a51fb.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 41, 59, 0.9) 100%);
    z-index: 1;
}

.dark-mode .hero::before {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 41, 59, 0.9) 100%);
}

body:not(.dark-mode) .hero::before {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.85) 0%, rgba(245, 245, 245, 0.9) 100%);
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 2;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 3;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    color: white;
}

body:not(.dark-mode) .hero-title {
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 16px;
    font-weight: 600;
}

.hero-description {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
    line-height: 1.7;
}

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

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

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-color);
    color: white;
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

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

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--text-primary);
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.trust-badges {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.trust-badges span {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

body:not(.dark-mode) .trust-badges span {
    color: var(--text-secondary);
}

.hero-image {
    position: relative;
    height: 400px;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow-xl);
    animation: float 3s ease-in-out infinite;
}

body:not(.dark-mode) .floating-card {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
}

.card-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: 20%;
    animation-delay: 1s;
}

.card-3 {
    bottom: 20%;
    left: 30%;
    animation-delay: 2s;
}

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

.card-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.card-label {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
}

.card-value {
    font-size: 32px;
    font-weight: 800;
    color: white;
}

body:not(.dark-mode) .card-label {
    color: var(--text-secondary);
}

body:not(.dark-mode) .card-value {
    color: var(--primary-color);
}

.stats-section {
    padding: 80px 0;
    background: var(--bg-primary);
}

.stats-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.stats-text h2 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.2;
}

.stats-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.stat-item {
    background: var(--bg-secondary);
    padding: 32px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
}

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

.stat-icon {
    color: var(--primary-color);
    margin-bottom: 16px;
}

.stat-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.stat-number::after {
    content: '+';
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
}

.portfolio-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.portfolio-slider {
    position: relative;
}

.portfolio-container {
    overflow: hidden;
    border-radius: 16px;
}

.portfolio-slide {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    background: var(--bg-primary);
    padding: 40px;
    border-radius: 16px;
    align-items: center;
}

.portfolio-slide.active {
    display: grid;
}

.portfolio-badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 16px;
}

.portfolio-info h3 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 16px;
}

.portfolio-info p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-stack span {
    background: var(--bg-secondary);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary);
}

.portfolio-preview {
    height: 300px;
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.portfolio-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-primary);
}

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

.slider-btn.prev {
    left: -24px;
}

.slider-btn.next {
    right: -24px;
}

.slider-indicators {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: var(--primary-color);
    width: 24px;
    border-radius: 4px;
}

.tech-section {
    padding: 80px 0;
    background: var(--bg-primary);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 24px;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: 12px;
    transition: all 0.3s ease;
}

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

.tech-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.tech-item span {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.business-models {
    padding: 80px 0;
    background: var(--bg-secondary);
}

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

.model-card {
    background: var(--bg-primary);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

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

.model-image {
    height: 200px;
    overflow: hidden;
}

.model-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.model-card:hover .model-image img {
    transform: scale(1.05);
}

.model-content {
    padding: 24px;
}

.model-content h3 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 12px;
}

.model-content p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.industries-section {
    padding: 80px 0;
    background: var(--bg-primary);
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.industry-item {
    background: var(--bg-secondary);
    padding: 32px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
}

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

.industry-icon {
    color: var(--primary-color);
    margin-bottom: 16px;
}

.industry-item h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.industry-item p {
    color: var(--text-secondary);
    font-size: 14px;
}

.contact-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

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

.contact-form-container {
    background: var(--bg-primary);
    padding: 40px;
    border-radius: 16px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-primary);
    font-family: inherit;
    transition: all 0.3s ease;
}

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

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

.submit-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.submit-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.submit-btn.loading .btn-text {
    opacity: 0;
}

.submit-btn.loading .btn-loader {
    display: block;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.form-message {
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
    display: none;
}

.form-message.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    display: block;
}

.form-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid #ef4444;
    display: block;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-card {
    background: var(--bg-primary);
    padding: 32px;
    border-radius: 12px;
    transition: all 0.3s ease;
}

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

.info-icon {
    color: var(--primary-color);
    margin-bottom: 16px;
}

.info-card h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.info-card p {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 4px;
}

.info-subtext {
    font-size: 14px !important;
    margin-top: 8px;
}

.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
}

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

.footer-col a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 14px;
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

.footer-bottom-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-bottom-links a:hover {
    color: var(--primary-color);
}

@media (max-width: 1024px) {
    .hero-content,
    .stats-content,
    .portfolio-slide,
    .contact-wrapper,
    .footer-content {
        grid-template-columns: 1fr;
    }

    .hero-image {
        display: none;
    }

    .slider-btn {
        display: none;
    }

    .tech-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--bg-primary);
        width: 100%;
        padding: 32px 24px;
        box-shadow: var(--shadow-xl);
        transition: left 0.3s ease;
        align-items: flex-start;
    }

    .nav-links.active {
        left: 0;
    }

    .nav-actions {
        gap: 12px;
    }

    .cta-button {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

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

    .section-header h2 {
        font-size: 32px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .models-grid,
    .industries-grid {
        grid-template-columns: 1fr;
    }

    .trust-badges {
        flex-direction: column;
        gap: 8px;
    }
}