/* CSS Variables for consistent theming */
:root {
    --primary-color: #0066CC;
    --secondary-color: #00A86B;
    --accent-color: #FF6B35;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-light: #ffffff;
    --background-primary: #ffffff;
    --background-secondary: #f8fafc;
    --background-dark: #1a1a1a;
    --border-color: #e5e7eb;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 8px 30px rgba(0, 0, 0, 0.2);
    --gradient-primary: linear-gradient(135deg, #0066CC 0%, #004499 100%);
    --gradient-secondary: linear-gradient(135deg, #00A86B 0%, #007A4D 100%);
    --gradient-accent: linear-gradient(135deg, #FF6B35 0%, #E55A2B 100%);
    --font-primary: 'Inter', 'Noto Sans SC', sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-light);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition-smooth);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-smooth);
}

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

.contact-btn {
    background: var(--gradient-primary);
    color: white !important;
    padding: 8px 20px;
    border-radius: 25px;
    border: none;
    font-weight: 600;
}

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

.contact-btn::after {
    display: none;
}

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

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-smooth);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #f8fafc 0%, #e3f2fd 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.dna-animation {
    position: absolute;
    top: 50%;
    right: 10%;
    width: 300px;
    height: 300px;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path d="M20 20 Q50 10 80 20 Q50 30 20 40 Q50 50 80 60 Q50 70 20 80" stroke="%230066CC" stroke-width="2" fill="none" opacity="0.3"/></svg>') no-repeat center;
    background-size: contain;
    animation: rotate 20s linear infinite;
    opacity: 0.6;
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="10" cy="10" r="1" fill="%230066CC" opacity="0.3"><animate attributeName="cy" values="10;90;10" dur="3s" repeatCount="indefinite"/></circle><circle cx="30" cy="80" r="1.5" fill="%2300A86B" opacity="0.4"><animate attributeName="cy" values="80;20;80" dur="4s" repeatCount="indefinite"/></circle><circle cx="70" cy="40" r="1" fill="%23FF6B35" opacity="0.3"><animate attributeName="cy" values="40;90;40" dur="5s" repeatCount="indefinite"/></circle></svg>') repeat;
    animation: float 6s ease-in-out infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title .title-main {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.hero-title .title-sub {
    display: block;
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.hero-title .title-accent {
    display: block;
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--secondary-color);
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin: 2rem 0;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 12px 24px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-smooth);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

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

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

.hero-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    border: 1px solid rgba(255, 255, 255, 0.2);
    width: 100%;
    transition: var(--transition-smooth);
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Section Styles */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    background: var(--background-secondary);
}

.about-content {
    display: grid;
    gap: 2rem;
}

.philosophy-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    transition: var(--transition-smooth);
    border: 1px solid var(--border-color);
}

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

.card-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
    font-size: 1.5rem;
}

.philosophy-card h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.philosophy-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Technology Section */
.technology {
    background: var(--background-primary);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.tech-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    transition: var(--transition-smooth);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
}

.tech-card:nth-child(2)::before {
    background: var(--gradient-secondary);
}

.tech-card:nth-child(3)::before {
    background: var(--gradient-accent);
}

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

.tech-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
    font-size: 1.8rem;
}

.tech-card:nth-child(2) .tech-icon {
    background: var(--gradient-secondary);
}

.tech-card:nth-child(3) .tech-icon {
    background: var(--gradient-accent);
}

.tech-card h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.tech-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin: 1.5rem 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.feature-item i {
    color: var(--primary-color);
    width: 16px;
}

.tech-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

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

.solutions-content {
    display: grid;
    gap: 2rem;
}

.solution-item {
    display: flex;
    gap: 2rem;
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    transition: var(--transition-smooth);
    border: 1px solid var(--border-color);
}

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

.solution-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    flex-shrink: 0;
}

.solution-item:nth-child(2) .solution-icon {
    background: var(--gradient-secondary);
}

.solution-item:nth-child(3) .solution-icon {
    background: var(--gradient-accent);
}

.solution-content h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.solution-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.solution-features {
    list-style: none;
    display: grid;
    gap: 0.5rem;
}

.solution-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.solution-features i {
    color: var(--secondary-color);
    font-size: 0.8rem;
}

/* Vision Section */
.vision {
    background: var(--background-primary);
}

.vision-content {
    max-width: 1000px;
    margin: 0 auto;
}

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

.vision-text h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    margin-top: 2rem;
}

.vision-text h3:first-child {
    margin-top: 0;
}

.vision-text p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.vision-values {
    display: grid;
    gap: 1.5rem;
}

.value-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--background-secondary);
    border-radius: 15px;
    transition: var(--transition-smooth);
}

.value-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-light);
}

.value-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 1.2rem;
}

.value-item:nth-child(2) .value-icon {
    background: var(--gradient-secondary);
}

.value-item:nth-child(3) .value-icon {
    background: var(--gradient-accent);
}

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

.value-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.vision-quote {
    text-align: center;
    padding: 2rem;
    background: var(--gradient-primary);
    border-radius: 20px;
    color: white;
}

.vision-quote blockquote {
    font-size: 1.5rem;
    font-weight: 600;
    font-style: italic;
    margin: 0;
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info {
    display: grid;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: center;
    padding: 1.5rem;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-light);
    transition: var(--transition-smooth);
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

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

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

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-light);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    transition: var(--transition-smooth);
    font-family: var(--font-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

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

/* Footer */
.footer {
    background: var(--background-dark);
    color: var(--text-light);
    padding: 3rem 0 1rem;
}

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

.footer-brand {
    display: grid;
    gap: 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.5rem;
    color: white;
}

.footer-brand p {
    color: #cccccc;
    font-size: 0.9rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-section h4 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
    display: grid;
    gap: 0.5rem;
}

.footer-section a {
    color: #cccccc;
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
    color: #999;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: var(--transition-smooth);
        box-shadow: var(--shadow-medium);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 1rem 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-title .title-main {
        font-size: 2.5rem;
    }
    
    .hero-title .title-sub {
        font-size: 1.5rem;
    }
    
    .hero-stats {
        flex-direction: row;
        justify-content: space-around;
    }
    
    .stat-item {
        padding: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-features {
        grid-template-columns: 1fr;
    }
    
    .solution-item {
        flex-direction: column;
        text-align: center;
    }
    
    .vision-main {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title .title-main {
        font-size: 2rem;
    }
    
    .hero-title .title-sub {
        font-size: 1.2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .philosophy-card,
    .tech-card,
    .solution-item {
        padding: 1.5rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    .stat-item {
        padding: 0.5rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}