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

:root {
    --primary: #00d4ff;
    --secondary: #7b2cbf;
    --dark: #0a0a0a;
    --darker: #050510;
    --light: #f5f5f5;
    --text: #333;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
    line-height: 1.7;
    color: var(--text);
    background: var(--light);
    -webkit-text-size-adjust: 100%;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 5%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

nav .logo {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

nav .logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

nav .logo-sub {
    font-size: 0.55rem;
    color: #888;
    letter-spacing: 1px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-size: 0.8rem;
    transition: all 0.3s;
    padding: 0.3rem 0.5rem;
}

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

.lang-switch {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 0.3rem 0.7rem;
    border-radius: 15px;
    font-weight: 600;
    font-size: 0.7rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 100px 5% 5%;
    background: linear-gradient(135deg, var(--darker) 0%, #1a1a2e 50%, #16213e 100%);
    color: #fff;
    gap: 2rem;
}

.hero-content {
    flex: 1;
    max-width: 100%;
}

.hero h1 {
    font-size: 2.2rem;
    margin-bottom: 0.8rem;
    line-height: 1.3;
    background: linear-gradient(135deg, #fff, var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .tagline {
    font-size: 1.1rem;
    color: var(--primary);
    font-style: italic;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 0.95rem;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

/* AI Animation */
.hero-visual {
    display: none;
}

.cta-btn {
    display: inline-block;
    padding: 0.9rem 2rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.3s;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.cta-btn:hover {
    transform: translateY(-3px);
}

/* Sections */
section {
    padding: 4rem 5%;
}

.section-intro {
    text-align: center;
    max-width: 100%;
    margin: 0 auto 2rem;
    color: #666;
    font-size: 0.95rem;
}

h2 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

/* Solutions Cards */
.solutions {
    background: #fff;
}

.cards {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 100%;
}

.card {
    background: var(--light);
    padding: 1.5rem;
    border-radius: 15px;
    transition: all 0.3s;
    border: 1px solid rgba(0,0,0,0.05);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.card p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.card-features {
    list-style: none;
    padding-top: 0.8rem;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.card-features li {
    padding: 0.2rem 0;
    color: #888;
    font-size: 0.85rem;
}

.card-features li::before {
    content: '✓ ';
    color: var(--primary);
    font-weight: bold;
}

/* Cases */
.cases {
    background: linear-gradient(135deg, var(--darker), #1a1a2e);
    color: #fff;
}

.cases h2 {
    color: #fff;
}

.case-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 100%;
}

.case-item {
    background: rgba(255,255,255,0.05);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
}

.case-item h3 {
    font-size: 1rem;
    margin-bottom: 0.8rem;
    color: var(--primary);
}

.case-item p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.8);
    line-height: 1.6;
}

/* About */
.about {
    background: #fff;
    padding: 4rem 5%;
}

.about-text p {
    margin-bottom: 1rem;
    color: #555;
    font-size: 0.9rem;
    text-align: left;
}

.about-text .motto {
    font-style: italic;
    color: var(--secondary);
    font-size: 0.95rem;
    padding: 1rem;
    border-left: 3px solid var(--primary);
    background: rgba(0, 212, 255, 0.05);
    text-align: left;
}

/* Contact */
.contact {
    background: var(--light);
    text-align: center;
    padding: 4rem 5%;
}

.contact-locations {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin: 1.5rem 0 2rem;
}

.location {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    background: #fff;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    font-size: 0.85rem;
}

.loc-icon {
    font-size: 1.2rem;
}

/* Contact Form */
.contact-form {
    max-width: 100%;
    margin: 0 auto;
    background: #fff;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.form-intro {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.8rem;
    margin-bottom: 0.8rem;
    border: 2px solid #eee;
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
}

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

.submit-btn {
    width: 100%;
    padding: 0.9rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
}

/* Footer */
footer {
    background: var(--dark);
    color: #fff;
    padding: 2rem 5%;
    text-align: center;
    font-size: 0.85rem;
}

.footer-content p {
    margin: 0.3rem 0;
}

.footer-tagline {
    color: var(--primary);
    font-style: italic;
    font-size: 0.8rem;
}

/* Desktop */
@media (min-width: 769px) {
    nav ul {
        gap: 2rem;
    }
    
    nav a {
        font-size: 0.95rem;
    }
    
    .hero {
        padding: 100px 5% 0;
        gap: 3rem;
    }
    
    .hero h1 {
        font-size: 3.5rem;
    }
    
    .hero .tagline {
        font-size: 1.3rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .hero-visual {
        display: flex;
        flex: 1;
        justify-content: center;
        align-items: center;
        max-width: 400px;
    }
    
    .ai-animation {
        width: 300px;
        height: 300px;
        position: relative;
    }
    
    .circle {
        position: absolute;
        border-radius: 50%;
        animation: pulse 3s ease-in-out infinite;
    }
    
    .c1 { width: 300px; height: 300px; background: radial-gradient(circle, rgba(0, 212, 255, 0.3) 0%, transparent 70%); top: 0; left: 0; }
    .c2 { width: 200px; height: 200px; background: radial-gradient(circle, rgba(123, 44, 191, 0.4) 0%, transparent 70%); top: 50px; left: 50px; animation-delay: 1s; }
    .c3 { width: 100px; height: 100px; background: radial-gradient(circle, rgba(0, 212, 255, 0.6) 0%, transparent 70%); top: 100px; left: 100px; animation-delay: 2s; }
    
    @keyframes pulse {
        0%, 100% { transform: scale(1); opacity: 0.5; }
        50% { transform: scale(1.1); opacity: 1; }
    }
    
    section {
        padding: 6rem 5%;
    }
    
    .section-intro {
        max-width: 600px;
        font-size: 1.1rem;
    }
    
    h2 {
        font-size: 2.5rem;
    }
    
    .cards {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
        max-width: 1200px;
    }
    
    .card {
        padding: 2rem;
    }
    
    .card-icon {
        font-size: 2.5rem;
    }
    
    .card h3 {
        font-size: 1.3rem;
    }
    
    .card p {
        font-size: 1rem;
    }
    
    .case-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
        max-width: 1200px;
    }
    
    .case-item {
        padding: 2rem;
    }
    
    .case-item h3 {
        font-size: 1.1rem;
    }
    
    .case-item p {
        font-size: 0.95rem;
    }
    
    .about-text {
        max-width: 900px;
        margin: 0 auto;
    }
    
    .about-text p {
        text-align: center;
        font-size: 1rem;
    }
    
    .about-text .motto {
        max-width: 700px;
        margin: 2rem auto 0;
    }
    
    .contact-locations {
        gap: 2rem;
    }
    
    .location {
        padding: 1rem 1.5rem;
    }
    
    .contact-form {
        max-width: 500px;
        padding: 2rem;
    }
}