body {
    background: linear-gradient(180deg, #d0e7ff, #f0f8ff);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
}

.container {
    max-width: 900px;
    margin: 50px auto;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    color: #1a3c6e;
    margin-bottom: 40px;
    font-size: 2.5em;
}

.tools {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 25px;
}

.tool {
    background: linear-gradient(145deg, #f0f8ff, #cce5ff);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.tool:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.tool img {
    width: 60px;
    height: 60px;
    margin-bottom: 15px;
}

.tool a {
    display: block;
    text-decoration: none;
    font-size: 1.3em;
    font-weight: bold;
    color: #1a3c6e;
    margin-bottom: 5px;
}

.tool p {
    font-size: 0.95em;
    color: #444;
    margin: 0;
}

.timer {
    font-size: 3em;
    text-align: center;
    margin: 20px 0;
}

button {
    padding: 12px 20px;
    border-radius: 25px;
    border: none;
    background: #1a3c6e;
    color: white;
    font-weight: bold;
    cursor: pointer;
    margin: 5px;
}

footer {
    text-align: center;
    margin-top: 40px;
    font-size: 0.9em;
    color: #555;
}