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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(to bottom, #f8fafc, #eef2f7);
    color: #1e293b;
}

/* NAVBAR */
.navbar {
    width: 100%;
    padding: 20px 0;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e7eb;
}

.nav-container {
    max-width: 1100px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    font-size: 18px;
    font-weight: 600;
}

.nav-btn {
    color: #4f46e5;
    text-decoration: none;
    font-weight: 500;
}

/* HERO */
.hero {
    padding: 100px 20px 60px;
    text-align: center;
}

.hero-content {
    max-width: 700px;
    margin: auto;
}

.hero h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 10px;
}

.tagline {
    font-size: 18px;
    color: #64748b;
    margin-bottom: 10px;
}

.sub-info {
    font-size: 14px;
    color: #94a3b8;
    margin-bottom: 25px;
}

/* BUTTON */
.btn {
    display: inline-block;
    background: #4f46e5;
    color: #fff;
    padding: 14px 28px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.25s ease;
}

.btn:hover {
    background: #4338ca;
    transform: translateY(-3px);
}

/* WARNING TEXT */
.warning {
    margin-top: 12px;
    font-size: 14px;
    color: #64748b;
}

/* macOS NOTE BOX */
.mac-note {
    margin-top: 15px;
    font-size: 14px;
    color: #475569;
    background: #eef2ff;
    padding: 12px 16px;
    border-radius: 10px;
    border: 1px solid #c7d2fe;
    line-height: 1.5;
}

/* MAIN */
.main {
    padding: 40px 20px 80px;
}

/* GRID */
.grid {
    max-width: 1100px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

/* CARD */
.card {
    background: white;
    padding: 25px;
    border-radius: 18px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 15px 30px rgba(0,0,0,0.04);
    transition: 0.2s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    margin-bottom: 10px;
    font-size: 20px;
}

.card p {
    color: #475569;
    line-height: 1.6;
}

/* LIST */
.card ul {
    list-style: none;
    margin-top: 10px;
}

.card ul li {
    margin-bottom: 6px;
    color: #475569;
}

/* VIDEO */
video {
    width: 100%;
    border-radius: 12px;
    margin-top: 10px;
}

/* BUTTON OUTLINE */
.btn-outline {
    display: inline-block;
    margin-top: 10px;
    padding: 10px 20px;
    border: 1px solid #4f46e5;
    color: #4f46e5;
    border-radius: 10px;
    text-decoration: none;
    transition: 0.2s ease;
}

.btn-outline:hover {
    background: #4f46e5;
    color: white;
}

/* SMALL TEXT (GitHub + Insta notes) */
.github-note {
    margin-top: 12px;
    font-size: 14px;
    color: #64748b;
    line-height: 1.5;
}

/* FOOTER */
footer {
    text-align: center;
    padding: 25px;
    color: #64748b;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .grid {
        grid-template-columns: 1fr;
    }

    .hero h2 {
        font-size: 32px;
    }
}