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

body {
    background: #000;
    color: white;
}

/* HEADER */
header {
    display: flex;
    justify-content: space-between;
    padding: 20px 8%;
    position: fixed;
    width: 100%;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(10px);
    z-index: 100;
}

.logo {
    font-size: 22px;
    font-weight: bold;
}

.logo span {
    color: orange;
}

nav a {
    margin-left: 20px;
    color: white;
    text-decoration: none;
}

/* HERO */
.hero {
    height: 100vh;
    position: relative;
    overflow: hidden;
}

.slide {
    position: absolute;
    inset: 0;
    padding: 150px 8%;
    display: none;
    background: linear-gradient(to right, #000, transparent);
}

.slide.active {
    display: block;
}

.slide h1 {
    font-size: 55px;
    margin-bottom: 20px;
}

.slide p {
    font-size: 18px;
    opacity: 0.8;
    margin-bottom: 20px;
}

.btn {
    display: inline-block;
    padding: 12px 25px;
    background: orange;
    color: black;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
}

/* buttons */
.prev, .next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.1);
    border: none;
    color: white;
    font-size: 30px;
    padding: 10px 15px;
    cursor: pointer;
}

.prev { left: 20px; }
.next { right: 20px; }

/* SECTIONS */
.section {
    padding: 100px 8%;
}

.section h2 {
    font-size: 40px;
    margin-bottom: 20px;
    color: orange;
}

.card {
    background: rgba(255,255,255,0.05);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(255,255,255,0.1);
}

.slide:nth-child(1) {
    background-image: url("https://images.unsplash.com/photo-1504384308090-c894fdcc538d?auto=format&fit=crop&w=1600&q=80");
}
.slide:nth-child(2) {
    background-image: url("https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?auto=format&fit=crop&w=1600&q=80");
}

.slide:nth-child(3) {
    background-image: url("https://images.unsplash.com/photo-1558494949-ef010cbdcc31?auto=format&fit=crop&w=1600&q=80");
}

.slide:nth-child(4) {
    background-image: url("https://images.unsplash.com/photo-1520607162513-77705c0f0d4a?auto=format&fit=crop&w=1600&q=80");
}