* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, sans-serif;
}

body {
    background: #0b0e14;
    color: #fff;
    padding-bottom: 100px;
}

header {
    text-align: center;
    padding: 40px 10px;
}

header h1 {
    font-size: 3rem;
    font-weight: 700;
}

header p {
    opacity: .7;
    margin-top: 10px;
}

nav {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

nav input {
    width: 90%;
    max-width: 500px;
    padding: 12px 15px;
    border-radius: 10px;
    border: none;
    font-size: 1rem;
    outline: none;
    background: #1a1f27;
    color: white;
}

#app-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    width: 90%;
    margin: auto;
    margin-top: 30px;
}

.card {
    background: #151a21;
    border-radius: 12px;
    padding: 20px;
    transition: 0.3s ease;
    cursor: pointer;
    border: 1px solid #222;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 15px #111;
}

.card img {
    width: 100%;
    border-radius: 10px;
}

.card h3 {
    margin-top: 10px;
    font-size: 1.3rem;
}

.card p {
    opacity: .7;
    font-size: 0.9rem;
    margin-top: 5px;
}

.card button {
    margin-top: 15px;
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 8px;
    background: #2a90ff;
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.2s;
}

.card button:hover {
    background: #1975d9;
}

footer {
    text-align: center;
    margin-top: 40px;
    opacity: .6;
}