@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
    --bg: #ffffff;
    --fg: #0b1220;
    /* primary body text — deep slate (better than pure black) */
    --muted: #556277;
    /* secondary text (body copy, descriptions) */
    --muted-weak: #7a8799;
    /* tertiary text (footers, tiny microcopy) */
    --accent: #058839;
    /* blue accent (keeps a modern, trustworthy feel) */
    --gradient: linear-gradient(135deg, #ffffff 0%, #f6f8fa 100%);
}

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

body {
    background: var(--gradient);
    color: var(--fg);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Nav */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5rem;
    border-bottom: 1px solid #eef2f6;
    backdrop-filter: blur(8px);
}

.logo {
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--fg);
}

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

nav a {
    margin-left: 2rem;
    text-decoration: none;
    color: var(--muted);
    font-weight: 500;
    transition: color 0.25s ease;
}

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

/* Hero */
.hero {
    text-align: center;
    padding: 8rem 2rem 6rem;
    max-width: 900px;
    margin: auto;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--fg);
    line-height: 1.2;
}

.hero h1 span {
    color: var(--accent);
}

.hero p {
    margin-top: 1.5rem;
    color: var(--muted);
    font-size: 1.2rem;
}

.hero button {
    margin-top: 2rem;
    background: var(--accent);
    border: none;
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.hero button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(0, 102, 255, 0.18);
}

/* Highlight Section */
.highlight {
    text-align: center;
    padding: 5rem 2rem;
    background: #fafafa;
    border-top: 1px solid #f0f3f6;
    border-bottom: 1px solid #f0f3f6;
}

.highlight h2 {
    font-size: 2rem;
    color: var(--fg);
    margin-bottom: 1rem;
}

.highlight p {
    color: var(--muted);
    max-width: 700px;
    margin: auto;
    font-size: 1.1rem;
}

/* Grid Section */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 5rem auto;
    padding: 0 2rem;
}

.card {
    background: white;
    border: 1px solid #f0f3f6;
    border-radius: 12px;
    padding: 2.5rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(11, 18, 32, 0.06);
}

.card h3 {
    color: var(--accent);
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.card p {
    color: var(--muted);
    font-size: 1rem;
}

/* About Section */
.about {
    text-align: center;
    padding: 6rem 2rem;
    max-width: 800px;
    margin: auto;
}

.about h2 {
    font-size: 2rem;
    color: var(--fg);
    margin-bottom: 1rem;
}

.about p {
    color: var(--muted);
    font-size: 1.1rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--muted-weak);
    font-size: 0.9rem;
    border-top: 1px solid #f0f3f6;
    background: #f9f9fb;
}