body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #0f172a;
    color: #e2e8f0;
    margin: 0;
    padding: 0;
}

.header {
    background: #1e3a5f;
    color: #ffffff;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    margin: 0;
    font-size: 24px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.container {
    max-width: 1000px;
    margin: 24px auto;
    background: #1e293b;
    padding: 24px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

a {
    color: #60a5fa;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

button,
input[type="submit"] {
    background: #2563eb;
    color: #ffffff;
    border: none;
    border-radius: 4px;
    padding: 8px 14px;
    cursor: pointer;
    font-size: 14px;
}

button:hover,
input[type="submit"]:hover {
    background: #1d4ed8;
}

.btn-logout {
    background: #dc2626;
}

.btn-logout:hover {
    background: #b91c1c;
}

input[type="text"],
input[type="file"],
select {
    background: #334155;
    color: #e2e8f0;
    border: 1px solid #475569;
    border-radius: 4px;
    padding: 6px 10px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}

th, td {
    padding: 10px 12px;
    border-bottom: 1px solid #334155;
    text-align: left;
}

th {
    background: #1e3a5f;
    color: #ffffff;
}

tr:hover {
    background: #273449;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 12px;
    border-radius: 4px;
    background: #334155;
    color: #94a3b8;
}

h2 {
    color: #60a5fa;
    border-bottom: 1px solid #334155;
    padding-bottom: 8px;
}