* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: system-ui, sans-serif;
    color: #141313;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: #f9fafb;
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background: #000000;
    color: #fff;
}
.nav-brand {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.2rem;
}
.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}
.nav-links a {
    color: #ccc;
    text-decoration: none;
    font-size: 0.9rem;
}
.nav-links a:hover,
.nav-links a.active {
    color: #fff;
}

.main-content {
    flex: 1;
    padding: 2rem 5%;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}
.alert.success {
    background: #d4edda;
    color: #155724;
}
.alert.error {
    background: #f8d7da;
    color: #721c24;
}

.main-footer {
    text-align: center;
    padding: 1rem;
    background: #f5f5f5;
    color: #666;
    font-size: 0.85rem;
}

.dashboard h1 {
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}
.stat-card {
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}
.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #333;
}
.stat-label {
    color: #666;
    font-size: 0.85rem;
}

.panels {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}
.panel {
    background: #fff;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.panel h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

.btn {
    background: #333;
    color: #fff;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
}
.btn:hover {
    background: #555;
}
.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
}
.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: #999;
}
.btn-icon:hover {
    color: #e74c3c;
}

.form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background: #f9fafb;
    border-radius: 4px;
}
.form input,
.form select {
    padding: 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
}
.hidden {
    display: none;
}

.list {
    list-style: none;
}
.list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid #eee;
}
.list-item:last-child {
    border-bottom: none;
}
.list-item small {
    color: #999;
    margin-left: 0.5rem;
}
.empty {
    color: #000000;
    font-size: 0.9rem;
    padding: 1rem 0;
}