body {
    margin: 0;
    font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
    background: linear-gradient(180deg, #f4efe7 0%, #ffffff 35%, #eef4f1 100%);
    color: #1f2a24;
}

a {
    color: #0f5e4a;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.shell {
    max-width: 1180px;
    margin: 0 auto;
    padding: 32px 20px 48px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 28px;
}

.brand {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.brand span {
    color: #0f5e4a;
}

.nav {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.nav a,
.button,
button {
    border: 0;
    border-radius: 12px;
    background: #143f31;
    color: #fff;
    padding: 11px 16px;
    font-size: 14px;
    cursor: pointer;
    display: inline-block;
}

.button.secondary,
.nav a.secondary,
button.secondary {
    background: #dde9e3;
    color: #183026;
}

.hero,
.card,
.flash {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(20, 63, 49, 0.12);
    border-radius: 18px;
    box-shadow: 0 18px 50px rgba(27, 49, 40, 0.08);
}

.hero {
    padding: 28px;
    margin-bottom: 22px;
}

.hero h1,
.card h2,
.card h3 {
    margin-top: 0;
}

.grid {
    display: grid;
    gap: 18px;
}

.grid.cols-2 {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.grid.cols-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card {
    padding: 22px;
}

.flash {
    padding: 16px 18px;
    margin-bottom: 18px;
}

.flash.error {
    border-color: rgba(171, 48, 48, 0.25);
    background: rgba(255, 245, 245, 0.95);
}

.flash.success {
    border-color: rgba(15, 94, 74, 0.25);
    background: rgba(240, 250, 245, 0.95);
}

.metric {
    font-size: 30px;
    font-weight: 700;
    margin: 10px 0 6px;
}

.muted {
    color: #5e6f66;
    font-size: 14px;
}

form {
    display: grid;
    gap: 14px;
}

label {
    display: grid;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
}

input,
select,
textarea {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 13px;
    border-radius: 12px;
    border: 1px solid #cad9d2;
    background: #fbfdfc;
    font: inherit;
    color: #1f2a24;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

.row {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.list {
    margin: 0;
    padding-left: 18px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.table th,
.table td {
    padding: 10px 8px;
    border-bottom: 1px solid #e4ece8;
    text-align: left;
    vertical-align: top;
}

.tag {
    display: inline-block;
    padding: 5px 8px;
    border-radius: 999px;
    background: #e8f2ee;
    color: #0f5e4a;
    font-size: 12px;
    font-weight: 700;
}

.code {
    font-family: "IBM Plex Mono", "Consolas", monospace;
    font-size: 13px;
    background: #f3f7f5;
    border-radius: 10px;
    padding: 10px 12px;
    overflow-x: auto;
}

@media (max-width: 640px) {
    .topbar {
        flex-direction: column;
        align-items: flex-start;
    }
}