:root {
    --color-bg: #fafafa;
    --color-text-primary: #111827;
    --color-text-secondary: #6b7280;
    --color-accent: #0071e3; /* bright blue accent like Apple */
    --color-accent-hover: #005bb5;
    --color-shadow-light: rgba(0, 0, 0, 0.05);
    --color-shadow-strong: rgba(0, 0, 0, 0.12);
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    --border-radius: 10px;
    --transition: 0.3s ease-out;
    --max-width-container: 1120px;
    --spacing-large: 1rem;
    --spacing-medium: 2rem;
    --spacing-small: 1rem;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    line-height: 1.2;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition);
}

a:hover,
a:focus {
    color: var(--color-accent-hover);
    outline: none;
}

.container {
    max-width: var(--max-width-container);
    margin: 0 auto;
    padding-left: var(--spacing-small);
    padding-right: var(--spacing-small);
}

/* Header */
header {
    background: #fff;
    padding: var(--spacing-small) 0;
    box-shadow: 0 2px 7px var(--color-shadow-light);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav.container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.03em;
}

.logo span {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-text-primary);
    position: relative;
}

.nav-links a:hover,
.nav-links a:focus {
    color: var(--color-accent);
    outline: none;
}

@media (max-width: 560px) {
    nav.container {
        flex-direction: column;
        gap: 1rem;
    }
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
}

/* Hero Section */
.hero {
    padding: var(--spacing-large) 0;
    text-align: center;
    color: var(--color-text-primary);
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(260px,1fr));
    gap: var(--spacing-large);
    max-width: var(--max-width-container);
    margin: 0 auto 6rem;
    padding: 0 var(--spacing-small);
}

.service-card {
    background: #fff;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 16px var(--color-shadow-strong);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform var(--transition), box-shadow var(--transition);
    cursor: default;
}

.service-card:hover,
.service-card:focus-within {
    transform: translateY(-6px);
    box-shadow: 0 10px 30px var(--color-shadow-strong);
    outline: none;
}

.service-icon {
    font-size: 3.5rem;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.service-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-desc {
    color: var(--color-text-secondary);
    font-size: 1rem;
    text-align: center;
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

.service-cta {
    font-weight: 600;
    font-size: 1rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    background-color: var(--color-accent);
    color: #fff;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition);
    text-align: center;
    user-select: none;
}

.service-cta:hover,
.service-cta:focus {
    background-color: var(--color-accent-hover);
    outline: none;
}

/* Footer */
footer {
    background: #fff;
    padding: 2rem var(--spacing-small);
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    box-shadow: 0 -2px 7px var(--color-shadow-light);
    margin-top: auto;
}

footer a {
    color: var(--color-accent);
    font-weight: 600;
}

footer a:hover,
footer a:focus {
    color: var(--color-accent-hover);
    outline: none;
}

/* Accessibility Focus */
a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
}

/* Icons from font-awesome */
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0-beta3/css/all.min.css');