body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #e0f2f1;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    width: 90%;
    max-width: 450px;
    text-align: center;
    border-top: 8px solid #ffeb3b;
}

.logo-container img {
    width: 120px;
    margin-bottom: 15px;
}

h2 { color: #333; margin-bottom: 20px; }

input, select {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-sizing: border-box;
}

button, .btn {
    width: 100%;
    padding: 12px;
    background-color: #ffeb3b; 
    color: #333;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background 0.3s;
}

button:hover, .btn:hover {
    background-color: #fdd835;
}

.btn-secondary {
    background-color: #f5f5f5;
    color: #666;
    margin-top: 10px;
}

.calendar-box {
    border: 1px solid #ffeb3b;
    padding: 15px;
    border-radius: 10px;
    margin: 20px 0;
    background: #fffde7;
}