:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --background-color: #f4f6f9;
    --text-color: #34495e;
    --border-color: #e0e0e0;
    --card-background: #ffffff;
    --hover-color: #f0f0f0;
    --error-color: #e74c3c;
    --success-color: #27ae60;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

.hidden {
    display: none !important;
}

h1, h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #27ae60;
}

input[type="text"],
input[type="password"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
}

#login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-box {
    background-color: var(--card-background);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    text-align: center;
    margin-bottom: 30px;
}

.input-group {
    position: relative;
    margin-bottom: 20px;
}

.input-group i {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-color);
}

.input-group input {
    padding-left: 35px;
}

.dashboard-layout {
    display: flex;
    gap: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--primary-color);
    color: white;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 10px;
}

header h1 {
    color: white;
    margin: 0;
}

nav {
    width: 250px;
    background-color: var(--card-background);
    border-radius: 10px;
    padding: 20px;
    box-shadow: var(--shadow);
}

nav ul {
    list-style-type: none;
}

nav ul li {
    margin-bottom: 10px;
}

nav ul li a {
    color: var(--text-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    padding: 10px;
    border-radius: 5px;
    transition: var(--transition);
}

nav ul li a:hover {
    background-color: var(--hover-color);
}

nav ul li a i {
    margin-right: 10px;
}

main {
    flex-grow: 1;
}

.dashboard-section {
    background-color: var(--card-background);
    border-radius: 10px;
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.card {
    background-color: var(--card-background);
    border-radius: 10px;
    padding: 20px;
    box-shadow: var(--shadow);
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.chart-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
}

.chart-container canvas {
    max-width: 100%;
    height: auto;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.4);
}

.modal.show {
    display: block;
}

.modal-content {
    background-color: var(--card-background);
    margin: 15% auto;
    padding: 20px;
    border: 1px solid var(--border-color);
    width: 80%;
    max-width: 500px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover,
.close:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

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

.message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 10px 20px;
    border-radius: 5px;
    color: white;
    font-weight: 500;
    z-index: 1000;
    animation: fadeIn 0.3s, fadeOut 0.3s 4.7s;
}

.error-message {
    background-color: var(--error-color);
}

.success-message {
    background-color: var(--success-color);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

@media (max-width: 768px) {
    .dashboard-layout {
        flex-direction: column;
    }

    nav {
        width: 100%;
        margin-bottom: 20px;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 95%;
    }
}

#config-form {
    display: grid;
    gap: 20px;
}

#config-form fieldset {
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 15px;
}

#config-form legend {
    padding: 0 10px;
    font-weight: bold;
}

#config-form label {
    display: block;
    margin-bottom: 5px;
}

#config-form input[type="number"],
#config-form input[type="text"],
#config-form select {
    width: 100%;
}

#jobs-list .job-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    margin-bottom: 10px;
}

#jobs-list .job-item button {
    margin-left: 10px;
}

#proxies-list,
#user-agents-list {
    width: 100%;
    height: 200px;
    margin-bottom: 10px;
}