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

:root {
    --color-bg: #fafafa;
    --color-text: #1a1a1a;
    --color-muted: #666;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-border: #e5e5e5;
    --color-card-bg: #fff;
    --max-width: 960px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Nav */

nav {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

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

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

nav a {
    text-decoration: none;
    color: var(--color-muted);
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

/* Hero */

.hero {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 6rem 1rem 5rem;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.15rem;
    color: var(--color-muted);
    max-width: 540px;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--color-accent);
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: background 0.2s;
}

.btn:hover {
    background: var(--color-accent-hover);
}

/* Sections */

section {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 4rem 1rem;
}

section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

/* Services grid */

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
}

.card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1.5rem;
}

.card h3 {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.card p {
    color: var(--color-muted);
    font-size: 0.95rem;
}

/* About */

.about p {
    color: var(--color-muted);
    max-width: 600px;
    font-size: 1.05rem;
}

/* Contact */

.contact p {
    color: var(--color-muted);
    font-size: 1.05rem;
}

.contact .email {
    margin-top: 1rem;
}

.contact .email a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
}

.contact .email a:hover {
    text-decoration: underline;
}

/* Footer */

footer {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

footer p {
    color: var(--color-muted);
    font-size: 0.85rem;
}