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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

/* Navigation */
.navbar {
    background-color: #2c3e50;
    padding: 1rem 0;
    color: white;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    gap: 1.5rem;
}

.nav-item {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.nav-item:hover {
    background-color: #34495e;
}

/* Main Content */
main {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2rem;
    color: #2c3e50;
}

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card h3 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group textarea {
    font-family: 'Courier New', monospace;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

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

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.button-group {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

/* Auth Pages */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.auth-card h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.auth-card h2 {
    text-align: center;
    color: #7f8c8d;
    margin-bottom: 2rem;
    font-size: 1.2rem;
}

.auth-link {
    text-align: center;
    margin-top: 1.5rem;
}

.auth-link a {
    color: #3498db;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.error-message {
    background-color: #f8d7da;
    color: #721c24;
    padding: 0.75rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
}

.badge-queued {
    background-color: #ffeaa7;
    color: #856404;
}

.badge-running {
    background-color: #74b9ff;
    color: #0c5460;
}

.badge-done {
    background-color: #55efc4;
    color: #155724;
}

.badge-failed {
    background-color: #ff7675;
    color: #721c24;
}

.badge-starting {
    background-color: #fdcb6e;
    color: #856404;
}

.badge-stopped {
    background-color: #b2bec3;
    color: #2d3436;
}

/* Modal */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-large {
    max-width: 800px;
}

.close {
    float: right;
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    color: #95a5a6;
}

.close:hover {
    color: #2c3e50;
}

/* Lists */
.list-item {
    padding: 0.75rem;
    border-bottom: 1px solid #ecf0f1;
}

.list-item:last-child {
    border-bottom: none;
}

.empty-state {
    text-align: center;
    padding: 2rem;
    color: #95a5a6;
}

.loading {
    text-align: center;
    padding: 2rem;
    color: #95a5a6;
}

/* Bot/Backtest/Session Cards */
.bot-card, .template-card, .backtest-card, .session-card {
    padding: 1rem;
    border: 1px solid #ecf0f1;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.template-card code {
    display: block;
    background-color: #f8f9fa;
    padding: 0.5rem;
    border-radius: 4px;
    margin-top: 0.5rem;
    font-size: 0.875rem;
}

.metrics {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #ecf0f1;
}

.metrics p {
    margin-bottom: 0.5rem;
}

/* Logs */
.log-entry {
    padding: 0.5rem;
    border-left: 3px solid #ecf0f1;
    margin-bottom: 0.5rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
}

.log-info {
    border-left-color: #3498db;
}

.log-warning {
    border-left-color: #f39c12;
    background-color: #fff3cd;
}

.log-error {
    border-left-color: #e74c3c;
    background-color: #f8d7da;
}

.log-time {
    color: #95a5a6;
    margin-right: 0.5rem;
}

.log-level {
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Quick Links */
.quick-links {
    list-style: none;
}

.quick-links li {
    padding: 0.5rem 0;
}

.quick-links a {
    color: #3498db;
    text-decoration: none;
}

.quick-links a:hover {
    text-decoration: underline;
}

/* Footer */
.footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 3rem;
}

.text-muted {
    color: #7f8c8d;
    margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}