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

:root {
    --primary-red: #dc143c;
    --dark-red: #b01030;
    --light-red: #ff6b6b;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --dark-gray: #2c3e50;
    --text-gray: #555555;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--light-gray) 0%, #fff5f5 100%);
    color: var(--text-gray);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.header {
    text-align: center;
    margin-bottom: 60px;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--dark-red) 100%);
    color: var(--white);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(220, 20, 60, 0.3);
}

.header h1 {
    font-size: 3em;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 1.3em;
    opacity: 0.95;
    font-weight: 300;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.grid-container .full-width {
    grid-column: 1 / -1;
}

.card {
    background: var(--white);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border-left: 5px solid var(--primary-red);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(220, 20, 60, 0.25);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--light-gray);
}

.card-header h2 {
    font-size: 1.8em;
    color: var(--primary-red);
    font-weight: 600;
}

.badge {
    background: var(--primary-red);
    color: var(--white);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.description {
    color: var(--text-gray);
    margin-bottom: 20px;
    font-size: 0.95em;
    line-height: 1.7;
}

.example-box {
    background: var(--light-gray);
    padding: 50px 20px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    min-height: 150px;
    overflow: hidden;
}

.example {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-red), var(--light-red));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 600;
    border-radius: 8px;
    font-size: 0.9em;
    box-shadow: 0 5px 15px rgba(220, 20, 60, 0.3);
    transition: all 0.8s ease;
}

.translate-demo {
    transform: translate(50px, 30px);
}

.rotate-demo {
    transform: rotate(45deg);
}

.scale-demo {
    transform: scale(1.5);
}

.skew-demo {
    transform: skew(20deg, 10deg);
}

.skewx-demo {
    transform: skewX(25deg);
}

.skewy-demo {
    transform: skewY(25deg);
}

.scalex-demo {
    transform: scaleX(1.8);
}

.scaley-demo {
    transform: scaleY(1.8);
}

.combined-demo {
    transform: translate(30px, 20px) rotate(15deg) scale(1.2);
}

.code-block {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    border-left: 4px solid var(--primary-red);
}

code {
    color: #ff6b6b;
    font-weight: 600;
}

.footer {
    text-align: center;
    padding: 30px 20px;
    background: var(--dark-gray);
    color: var(--white);
    border-radius: 12px;
    margin-top: 60px;
}

.footer p {
    font-size: 1.1em;
}


@media (max-width: 768px) {
    .header h1 {
        font-size: 2em;
    }

    .grid-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .badge {
        align-self: flex-start;
    }

    .example-box {
        min-height: 120px;
        padding: 30px 15px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 20px 10px;
    }

    .header {
        padding: 25px 15px;
    }

    .header h1 {
        font-size: 1.5em;
    }

    .subtitle {
        font-size: 1em;
    }

    .card {
        padding: 15px;
    }

    .card-header h2 {
        font-size: 1.4em;
    }
}