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

:root {
    --primary: #1e3c72;
    --secondary: #2a5298;
    --accent: #00d4ff;
    --danger: #ff6b6b;
    --success: #51cf66;
    --warning: #fcc419;
    --dark: #1a1a1a;
    --light: #f8f9fa;
    --text: #333;
    --border: #ddd;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--text);
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Login */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    color: var(--primary);
    margin-bottom: 30px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text);
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 5px;
    font-size: 14px;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

button {
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    width: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(30, 60, 114, 0.4);
}

.btn-secondary {
    background: var(--light);
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

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

.btn-danger:hover {
    opacity: 0.9;
}

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

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

.message {
    padding: 12px 16px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: none;
}

.message.show {
    display: block;
}

.message.success {
    background: rgba(81, 207, 102, 0.1);
    color: var(--success);
    border-left: 4px solid var(--success);
}

.message.error {
    background: rgba(255, 107, 107, 0.1);
    color: var(--danger);
    border-left: 4px solid var(--danger);
}

/* Dashboard */
.header {
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    color: var(--primary);
    font-size: 28px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-info p {
    color: var(--text);
}

/* Navigation */
.nav-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.nav-tabs button {
    background: white;
    border: 2px solid var(--border);
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
}

.nav-tabs button.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-color: transparent;
}

.nav-tabs button:hover:not(.active) {
    border-color: var(--accent);
}

/* Content Sections */
.content-section {
    display: none;
    animation: fadeIn 0.3s;
}

.content-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.section-card h2 {
    color: var(--primary);
    margin-bottom: 20px;
    font-size: 20px;
}

/* Console */
.console-output {
    background: #1e1e1e;
    color: #00ff00;
    padding: 15px;
    border-radius: 5px;
    font-family: 'Courier New', monospace;
    height: 300px;
    overflow-y: auto;
    margin-bottom: 15px;
    font-size: 12px;
    border: 1px solid var(--border);
}

.console-output .error {
    color: #ff6b6b;
}

.console-output .warning {
    color: #fcc419;
}

.console-input {
    display: flex;
    gap: 10px;
}

.console-input input {
    flex: 1;
}

/* Logs Viewer */
.logs-container {
    background: #1e1e1e;
    color: #00ff00;
    padding: 15px;
    border-radius: 5px;
    font-family: 'Courier New', monospace;
    height: 400px;
    overflow-y: auto;
    font-size: 12px;
    border: 1px solid var(--border);
    line-height: 1.5;
}

.logs-container .log-line {
    margin-bottom: 2px;
}

.logs-container .error {
    color: #ff6b6b;
}

.logs-container .warning {
    color: #fcc419;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

table thead {
    background: var(--light);
}

table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: var(--primary);
}

table td {
    padding: 12px;
    border-bottom: 1px solid var(--border);
}

table tbody tr:hover {
    background: var(--light);
}

/* Buttons Group */
.btn-group {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.btn-group button {
    margin: 0;
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.grid-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
}

.grid-card h3 {
    color: var(--primary);
    margin-bottom: 10px;
}

.grid-card .value {
    font-size: 24px;
    font-weight: bold;
    color: var(--secondary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

.modal-content h2 {
    color: var(--primary);
    margin-bottom: 20px;
}

.modal-content .form-group {
    margin-bottom: 20px;
}

.modal-buttons {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0,0,0,0.1);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .nav-tabs {
        flex-direction: column;
    }

    .nav-tabs button {
        width: 100%;
    }

    .user-info {
        flex-direction: column;
        gap: 10px;
    }

    .login-box {
        padding: 25px;
    }

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

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

/* Status indicators */
.status {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
}

.status.online {
    background: var(--success);
}

.status.offline {
    background: var(--danger);
}

.status.busy {
    background: var(--warning);
}