/* --- General Styles --- */
:root {
    --primary-color: #3498db; /* A nice blue */
    --secondary-color: #2ecc71; /* A nice green */
    --light-gray: #f4f7f6;
    --dark-gray: #333;
    --card-bg: #ffffff;
    --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --card-hover-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    --border-radius: 8px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: var(--light-gray);
    color: var(--dark-gray);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

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

a {
    text-decoration: none;
    color: var(--primary-color);
}

/* --- Header --- */
header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    padding: 60px 0 40px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 2.8em;
    margin-bottom: 10px;
    font-weight: 300; /* Lighter font weight for modern look */
}

header p {
    font-size: 1.2em;
    opacity: 0.9;
}

/* --- Main Content & Tool Grid --- */
main {
    flex-grow: 1; /* Ensures footer stays at the bottom */
    padding: 40px 0;
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); /* Responsive grid */
    gap: 25px;
}

.tool-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    padding: 25px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between; /* Helps if descriptions vary in length */
    color: var(--dark-gray); /* Reset link color for card content */
}

.tool-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--card-hover-shadow);
}

.tool-icon {
    font-size: 2.5em; /* Adjust icon size */
    color: var(--primary-color);
    margin-bottom: 15px;
}

.tool-card h2 {
    font-size: 1.6em;
    color: var(--primary-color); /* Or use --dark-gray for more subtlety */
    margin-bottom: 10px;
}

.tool-card p {
    font-size: 0.95em;
    color: #555;
    flex-grow: 1; /* Allows description to take up available space */
    margin-bottom: 15px; /* Add some space before a potential "Learn More" button if you add one */
}

/* --- Footer --- */
footer {
    background-color: var(--dark-gray);
    color: var(--light-gray);
    text-align: center;
    padding: 20px 0;
    font-size: 0.9em;
}

/* --- Responsive Adjustments (Optional, base is already quite responsive) --- */
@media (max-width: 768px) {
    header h1 {
        font-size: 2.2em;
    }
    header p {
        font-size: 1em;
    }
    .tool-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    .tool-card h2 {
        font-size: 1.4em;
    }
}

@media (max-width: 480px) {
    .tool-grid {
        grid-template-columns: 1fr; /* Single column on very small screens */
    }
}