* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, sans-serif;
    background: #f5f7fb;
    color: #102135;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 20px;
    background: #0e2942;
    color: #fff;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.brand {
    font-weight: 700;
}

.brand-link {
    color: #fff;
    text-decoration: none;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 14px;
}

.topbar-left a,
.nav a {
    color: #d8e6f5;
    text-decoration: none;
}

.container {
    max-width: 1100px;
    margin: 18px auto;
    padding: 0 14px 28px;
}

.card {
    background: #fff;
    border: 1px solid #d6deea;
    border-radius: 10px;
    margin-bottom: 16px;
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-bottom: 1px solid #e2e8f0;
}

.card-header h1,
.card-header h2 {
    margin: 0;
    font-size: 1.1rem;
}

.card-body {
    padding: 14px;
}

.card.collapsed .card-body {
    display: none;
}

.card-toggle {
    background: #eef4fb;
    border: 1px solid #b9c9dc;
    border-radius: 8px;
    padding: 6px 10px;
    cursor: pointer;
}

.form-grid {
    display: grid;
    gap: 8px;
}

label {
    font-size: 0.93rem;
}

input,
button {
    font: inherit;
    padding: 8px 10px;
}

button {
    background: #0e5ea7;
    color: #fff;
    border: 1px solid #0e5ea7;
    border-radius: 8px;
    cursor: pointer;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    text-align: left;
    border-bottom: 1px solid #e5ebf4;
    padding: 8px;
    font-size: 0.93rem;
}

.inline-form {
    display: inline-flex;
    gap: 6px;
    margin: 0 6px 6px 0;
}

.flash {
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 12px;
}

.flash-success {
    background: #e8f7ec;
    border: 1px solid #bfe9ca;
}

.flash-error {
    background: #ffecec;
    border: 1px solid #ffc6c6;
}

.muted {
    color: #4a5f75;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
}

.stat {
    border: 1px solid #d6deea;
    border-radius: 8px;
    padding: 10px;
}

.stat span {
    display: block;
    color: #4a5f75;
    font-size: 0.85rem;
}

.stat strong {
    display: block;
    margin-top: 4px;
    font-size: 1.35rem;
}