/* ===================================
   Modern AI Tech Company Design
   =================================== */

:root {
    /* Primary Colors - Tech/AI Theme */
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-tech: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-ai: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    
    /* Light Theme Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --bg-hover: #f1f5f9;
    
    /* Text Colors */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    /* Borders & Shadows */
    --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);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.2);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
    
    /* Typography */
    --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Courier New', monospace;
    
    /* Layout */
    --max-width: 1280px;
    --header-height: 80px;
    --border-radius: 12px;
    --border-radius-lg: 24px;
}

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

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

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

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

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

button {
    font-family: var(--font-primary);
    cursor: pointer;
    border: none;
    outline: none;
}

/* ===================================
   Container & Layout
   =================================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 8px 16px;
    z-index: 100;
    border-radius: 0 0 8px 0;
}

.skip-link:focus {
    top: 0;
}

/* ===================================
   Header
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

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

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.logo img {
    height: 50px;
    width: auto;
    filter: brightness(0.9) drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    transition: var(--transition);
}

.logo:hover img {
    filter: brightness(1) drop-shadow(0 4px 8px rgba(99, 102, 241, 0.3));
    transform: scale(1.05);
}

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

.nav-link {
    font-weight: 500;
    font-size: 15px;
    color: var(--text-secondary);
    position: relative;
    padding: 8px 0;
    transition: var(--transition);
}

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

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

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    padding: 8px;
    border-radius: 8px;
    transition: var(--transition);
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu-toggle:hover {
    background: var(--bg-secondary);
}

/* Mobile Menu Styles */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        transition: transform 0.3s ease, opacity 0.3s ease;
        pointer-events: none;
    }
    
    .nav-menu.active {
        display: flex;
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .nav-link {
        padding: 16px 0;
        border-bottom: 1px solid var(--border-color);
        width: 100%;
        text-align: center;
        font-size: 18px;
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

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

.hero-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(236, 72, 153, 0.05) 0%, transparent 50%);
    animation: particleFloat 20s ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, 30px); }
}

.hero-gradient {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(248, 250, 252, 0.5) 0%, var(--bg-primary) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 20px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 30px;
    animation: fadeInDown 0.8s ease;
}

.hero-badge i {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

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

.hero-subtitle {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--text-muted);
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-description {
    font-size: 20px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
    animation: fadeInUp 0.8s ease 0.8s backwards;
}

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

.stat-number {
    font-size: 48px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s ease-in-out infinite;
}

.mouse {
    width: 28px;
    height: 45px;
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-radius: 15px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(15px); }
}

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

/* ===================================
   Section Styles
   =================================== */
section {
    padding: 100px 0;
    position: relative;
}

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

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ===================================
   About Section
   =================================== */
.about {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 48px;
    align-items: start;
}

.about-main {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.about-main:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.15);
    transform: translateY(-5px);
}

.about-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-glow);
}

.about-main h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.about-main p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
}

.feature-card:hover {
    background: rgba(99, 102, 241, 0.05);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-md);
    transform: translateX(8px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-tech);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 16px;
}

.feature-card h4 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ===================================
   Careers Section
   =================================== */
.careers {
    background: var(--bg-primary);
}

.careers-intro {
    text-align: center;
    margin-bottom: 48px;
}

.intro-text {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.careers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 32px;
}

.career-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

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

.career-card:hover {
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);
    transform: translateY(-8px);
}

.career-card-featured {
    border-color: rgba(99, 102, 241, 0.3);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(139, 92, 246, 0.05));
}

.career-featured-badge {
    position: absolute;
    top: 24px;
    right: 24px;
    padding: 4px 12px;
    background: var(--gradient-primary);
    border-radius: 50px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.career-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.career-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.career-badge {
    padding: 6px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}

.career-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.career-description {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
}

.career-requirements {
    margin-bottom: 24px;
}

.career-requirements h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.career-requirements ul {
    list-style: none;
}

.career-requirements li {
    padding: 10px 0;
    padding-left: 24px;
    position: relative;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.career-requirements li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.career-footer {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.career-location {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 40px 32px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 0 0 50px 50px;
}

.contact-card:hover {
    border-color: rgba(99, 102, 241, 0.4);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);
}

.contact-icon-wrapper {
    margin-bottom: 24px;
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto;
    transition: var(--transition);
}

.contact-card:hover .contact-icon {
    transform: scale(1.1) rotate(10deg);
}

.contact-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.contact-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.contact-link {
    color: var(--primary);
    font-weight: 600;
    transition: var(--transition);
}

.contact-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.contact-decoration {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-tech);
    opacity: 0;
    transition: var(--transition);
}

.contact-card:hover .contact-decoration {
    opacity: 1;
}

/* ===================================
   Map Section
   =================================== */
.map {
    padding: 0;
    border-top: 1px solid var(--border-color);
}

.map iframe {
    display: block;
    width: 100%;
    filter: grayscale(20%) saturate(0.8);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 32px 0;
}

.footer-content {
    text-align: center;
}

.copyright {
    font-size: 14px;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

/* ===================================
   Scroll to Top Button
   =================================== */
.scroll-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
    transition: var(--transition);
    z-index: 999;
    cursor: pointer;
}

.scroll-top:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.6);
}

.scroll-top.visible {
    display: flex;
}

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .careers-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .hero-subtitle {
        font-size: 18px;
        letter-spacing: 2px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 32px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .about-main {
        padding: 32px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --header-height: 70px;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .about-main {
        padding: 24px;
    }
    
    .career-card {
        padding: 24px;
    }
    
    .scroll-top {
        width: 48px;
        height: 48px;
        bottom: 24px;
        right: 24px;
    }
}