:root {
    --background-color: #f8f9fa;
    --container-bg: #ffffff;
    --primary-text: #212529;
    --secondary-text: #6c757d;
    --accent-color: #007bff;
    --accent-hover: #0056b3;
    --border-color: #dee2e6;
    --success-color: #28a745;
    --danger-color: #dc3545;
}

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

body {
    font-family: 'Cairo', sans-serif;
    background-color: var(--background-color);
    color: var(--primary-text);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 700px;
    background: var(--container-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.notation {
    color: var(--secondary-text);
    margin-bottom: 30px;
    font-size: 1rem;
}

.search-form {
    display: flex;
    margin-bottom: 30px;
    gap: 10px;
}

input#query {
    flex-grow: 1;
    padding: 12px 15px;
    font-size: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: border-color 0.2s, box-shadow 0.2s;
}

input#query:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.2);
}

button {
    padding: 12px 25px;
    font-size: 1rem;
    font-weight: 700;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: var(--accent-hover);
}

#results {
    margin-top: 20px;
    text-align: right;
}

.result {
    background-color: #fff;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    border-right-width: 5px;
    transition: transform 0.2s;
}

.result:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.result.success {
    border-right-color: var(--success-color);
}

.result.failure {
    border-right-color: var(--danger-color);
}

.result p {
    margin-bottom: 5px;
}

.loader {
    display: none;
    margin: 30px auto;
    border: 5px solid #f3f3f3;
    border-top: 5px solid var(--accent-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#pagination {
    margin-top: 30px;
    display: flex;
    gap: 10px;
}

#load-more {
    display: none; /* Hidden by default */
    flex-grow: 1;
}

#reset-button {
    display: none;
    background-color: var(--secondary-text);
}

#reset-button:hover {
    background-color: #5a6268;
}

.footer {
    margin-top: 40px;
    font-size: 0.9rem;
    color: var(--secondary-text);
}
.footer a {
    color: var(--accent-color);
    text-decoration: none;
}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    .container {
        padding: 20px;
    }
    h1 {
        font-size: 2rem;
    }
    .search-form {
        flex-direction: column;
    }
}