body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(to right, #1a1a1a, #333333); /* Dark gradient */
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: #fff; /* Default text color */
}

.container {
    background: #000000; /* Pure black for premium feel */
    border-radius: 15px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.5); /* Deeper shadow */
    width: 90%;
    max-width: 550px;
    padding: 25px;
    text-align: center;
    border: 1px solid #d4af37; /* Subtle gold border */
}

header .logo {
    width: 100px;
    height: auto;
}

header h1 {
    color: #d4af37; /* Gold for a royal touch */
    font-size: 30px;
    margin: 10px 0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

header p {
    color: #b3b3b3; /* Light gray for contrast */
    font-size: 16px;
}

.form-container {
    margin: 25px 0;
}

.form-container h2 {
    color: #d4af37; /* Gold */
    margin-bottom: 20px;
    font-size: 24px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

label {
    font-weight: bold;
    color: #fff; /* White labels */
}

input {
    padding: 12px;
    border: 1px solid #d4af37; /* Gold border */
    border-radius: 5px;
    font-size: 16px;
    background-color: #1a1a1a; /* Dark input background */
    color: #fff; /* White text */
}

input::placeholder {
    color: #b3b3b3; /* Light gray placeholder */
}

button {
    padding: 12px;
    background-color: #d4af37; /* Gold button */
    color: #000; /* Black text for contrast */
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #b8860b; /* Darker gold on hover */
}

.result-output {
    margin-top: 20px;
    padding: 20px;
    border: 1px solid #d4af37; /* Gold border */
    border-radius: 5px;
    color: #fff; /* White text */
    display: none;
    text-align: left;
    background-color: #1a1a1a; /* Dark background */
}

.result-output h3 {
    color: #d4af37; /* Gold */
    margin-bottom: 20px;
    text-align: center;
    font-size: 22px;
}

.result-output h4 {
    color: #d4af37; /* Gold */
    margin: 15px 0 10px;
    font-size: 18px;
}

.personal-grid, .subjects-grid {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 15px;
}

.personal-grid th, .personal-grid td, .subjects-grid th, .subjects-grid td {
    padding: 12px;
    border-bottom: 1px solid #404040; /* Subtle gray line */
    text-align: left;
}

.personal-grid th {
    background-color: #333333; /* Dark gray */
    color: #d4af37; /* Gold */
    width: 40%;
}

.personal-grid td {
    background-color: #1a1a1a; /* Darker background */
    color: #fff; /* White */
}

.subjects-grid th {
    background-color: #404040; /* Slightly lighter gray */
    color: #d4af37; /* Gold */
    width: 40%;
}

.subjects-grid td {
    background-color: #262626; /* Slightly different dark shade */
    color: #fff; /* White */
}

.error {
    color: #ff4444; /* Bright red for errors */
    font-weight: bold;
    text-align: center;
}

footer {
    margin-top: 20px;
    color: #b3b3b3; /* Light gray */
    font-size: 14px;
}