:root {
    /* Riverside Data Solutions - Modern Data-Driven Elegance */
    --primary: #0F172A;        /* Deep navy - trust & professionalism */
    --primary-foreground: #FFFFFF;
    --accent: #06B6D4;         /* Electric teal - innovation & CTAs */
    --accent-hover: #0891B2;
    --background: #FFFFFF;
    --foreground: #1E293B;
    --card: #F8FAFC;
    --muted: #F1F5F9;
    --muted-foreground: #64748B;
    --border: #E2E8F0;
    --radius: 0.5rem;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--background);
    color: var(--foreground);
}

header {
    background-color: var(--primary);
    color: var(--primary-foreground);
    padding: 32px 20px 24px;
    text-align: center;
}

header h1 {
    margin: 0 0 8px;
    font-family: 'Geist', system-ui, sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
}

nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 8px;
    margin: 16px 0 0;
}

nav ul li {
    margin: 0;
}

nav ul li button.lang-btn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--primary-foreground);
    font-size: 0.9em;
    padding: 6px 14px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

nav ul li button.lang-btn:hover {
    background-color: var(--accent);
    border-color: var(--accent);
}

main {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 28px 32px;
    margin: 24px auto;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}

section h2 {
    font-family: 'Geist', system-ui, sans-serif;
    color: var(--primary);
    border-bottom: 2px solid var(--accent);
    padding-bottom: 8px;
    margin-top: 0;
}

section p {
    color: var(--foreground);
}

#services-list,
#contact-info {
    list-style: none;
    padding: 0;
}

#services-list li,
#contact-info li {
    padding: 10px 0 10px 24px;
    border-bottom: 1px solid var(--border);
    position: relative;
}

#services-list li:last-child,
#contact-info li:last-child {
    border-bottom: none;
}

#services-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 18px;
    width: 8px;
    height: 8px;
    background-color: var(--accent);
    border-radius: 50%;
}

#contact-info li {
    color: var(--muted-foreground);
}

footer {
    text-align: center;
    background: var(--primary);
    color: var(--primary-foreground);
    padding: 16px;
    margin-top: 32px;
    font-size: 0.9em;
}