:root {
    --apple-gray: #f5f5f7;
    --apple-black: #1d1d1f;
    --apple-blue: #0066cc;
    --nav-bg: rgba(251, 251, 253, 0.8);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
    letter-spacing: -0.02em; /* Apple đặc trưng với khoảng cách chữ hẹp */
}

body {
    background-color: #ffffff;
    color: var(--apple-black);
    -webkit-font-smoothing: antialiased;
}

/* Nav Bar */
.apple-nav {
    position: fixed;
    top: 0;
    width: 100%;
    height: 48px;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    border-bottom: 1px solid rgba(0,0,0,0.08);
}

.nav-content {
    width: 100%;
    max-width: 1000px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.nav-links a, .logo {
    text-decoration: none;
    color: var(--apple-black);
    font-size: 12px;
    opacity: 0.8;
    transition: 0.3s;
}

.logo { font-size: 18px; opacity: 1; }
.nav-links a:hover { opacity: 1; }
.nav-links { display: flex; gap: 30px; }

/* Hero Section */
.hero-macbook {
    padding-top: 120px;
    text-align: center;
    background-color: #fff;
}

.hero-text h1 {
    font-size: 56px;
    font-weight: 600;
}

.tagline {
    font-size: 28px;
    margin-top: 10px;
}

.hero-cta {
    margin-top: 25px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
}

.btn-blue {
    background: var(--apple-blue);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 17px;
    font-weight: 500;
    cursor: pointer;
}

.link-more {
    color: var(--apple-blue);
    text-decoration: none;
    font-size: 19px;
}

.hero-img-container img {
    max-width: 850px;
    width: 100%;
    margin-top: 50px;
}

/* Bento Grid Showcase */
.product-showcase {
    background-color: var(--apple-gray);
    padding: 100px 0;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.grid-title {
    font-size: 40px;
    font-weight: 600;
    margin-bottom: 50px;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.bento-card {
    border-radius: 28px;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    height: 520px;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.bento-card:hover {
    transform: scale(1.01);
}

.bg-white { background-color: #fff; }
.bg-black { background-color: #000; color: #fff; }

.label-new {
    color: #bf4800;
    font-size: 12px;
    font-weight: 600;
    display: block;
    margin-bottom: 8px;
}

.card-info h3 { font-size: 24px; margin-bottom: 10px; }
.card-info p { color: #6e6e73; font-size: 16px; }
.white-text p { color: #a1a1a6; }

.price {
    margin-top: 15px;
    font-weight: 500;
    color: var(--apple-black) !important;
}
.white-text .price { color: #fff !important; }

.bento-card img {
    max-width: 100%;
    margin-top: 40px;
    transition: 0.5s ease;
}

/* Responsive */
@media (max-width: 900px) {
    .bento-grid { grid-template-columns: 1fr; }
    .hero-text h1 { font-size: 40px; }
    .bento-card { height: auto; }
}