:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --background-color: #ecf0f1;
    --card-background: #ffffff;
    --text-color: #34495e;
    --header-font: 'Montserrat', sans-serif;
    --body-font: 'Roboto', sans-serif;
}

body {
    font-family: var(--body-font);
    margin: 0;
    padding: 0 20px 40px 20px;
    background-color: var(--background-color);
    color: var(--text-color);
    text-align: center;
}

header {
    max-width: 800px;
    margin: 40px auto;
}

header h1 {
    font-family: var(--header-font);
    font-size: 2.5em;
    color: var(--primary-color);
}

header p {
    font-size: 1.1em;
    line-height: 1.6;
}

.hacks-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1300px;
    margin: 0 auto;
    padding: 20px;
}

.hack-card-scene {
    perspective: 1000px;
    width: 100%;
    height: 400px;
}

.hack-card {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.8s;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border-radius: 15px;
}

.hack-card.is-flipped {
    transform: rotateY(180deg);
}

.card-face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: 15px;
    background-color: var(--card-background);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    box-sizing: border-box;
}

.card-front img {
    max-width: 60%;
    height: auto;
    margin-bottom: 20px;
    border-radius: 10px;
}

.card-front h2 {
    font-family: var(--header-font);
    font-size: 1.5em;
    margin: 0;
    color: var(--primary-color);
}

.card-back {
    transform: rotateY(180deg);
    background-color: var(--secondary-color);
    color: white;
}

.card-back h2 {
    font-family: var(--header-font);
}

.card-back p {
    font-size: 1.1em;
    line-height: 1.5;
    font-weight: 500;
}