:root {
    color-scheme: light;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #f4f7fb;
    color: #172033;
}

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

.topbar {
    background: #13243a;
    color: white;
    padding: 1rem max(1.5rem, calc((100% - 1100px) / 2));
}

.topbar a { color: white; text-decoration: none; }
.topbar nav { display: flex; align-items: center; gap: 1.25rem; }
.brand { display: flex; margin-right: auto; }
.brand img { display: block; width: 205px; height: auto; }
.topbar-inner { display: flex; align-items: center; }

main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

.hero { max-width: 760px; margin-bottom: 2rem; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.5rem); margin: 0 0 1rem; }
.hero p { color: #526075; font-size: 1.1rem; line-height: 1.7; }

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
}

.card {
    display: block;
    padding: 1.5rem;
    background: white;
    border: 1px solid #dce3ed;
    border-radius: 14px;
    box-shadow: 0 6px 24px rgb(20 39 66 / 6%);
    color: inherit;
    text-decoration: none;
}

.card:hover { border-color: #4d76b8; transform: translateY(-2px); }
.card h2 { margin-top: 0; }
.muted { color: #657186; }
.badge {
    display: inline-block;
    padding: .3rem .65rem;
    border-radius: 999px;
    background: #e8f0ff;
    color: #24508f;
    font-size: .85rem;
    font-weight: 700;
}

.nav-form { margin: 0; }
.nav-button {
    padding: 0;
    border: 0;
    background: none;
    color: white;
    font: inherit;
    cursor: pointer;
}

.auth-card {
    max-width: 460px;
    margin: 1rem auto;
    padding: 2rem;
    background: white;
    border: 1px solid #dce3ed;
    border-radius: 14px;
    box-shadow: 0 6px 24px rgb(20 39 66 / 8%);
}

.auth-card h1 { margin-bottom: .5rem; }
.auth-card form { display: grid; gap: .75rem; margin-top: 1.5rem; }
.auth-card label { font-weight: 700; }
.auth-card input {
    width: 100%;
    padding: .8rem .9rem;
    border: 1px solid #aeb9c9;
    border-radius: 8px;
    font: inherit;
}

.auth-card input:focus {
    outline: 3px solid rgb(65 115 190 / 20%);
    border-color: #3567ae;
}

.button {
    margin-top: .5rem;
    padding: .8rem 1rem;
    border: 0;
    border-radius: 8px;
    background: #24508f;
    color: white;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

.alert {
    margin-top: 1rem;
    padding: .8rem 1rem;
    border: 1px solid #e7a2a2;
    border-radius: 8px;
    background: #fff1f1;
    color: #8a2020;
}

.page-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 1.75rem;
}

.page-heading h1 { margin: .5rem 0 .25rem; font-size: 2.25rem; }
.page-heading p { margin: 0; }
.button-link { display: inline-block; text-decoration: none; white-space: nowrap; }
.secondary-link { color: #24508f; font-weight: 700; text-decoration: none; }

.data-form {
    display: grid;
    gap: 1.25rem;
    max-width: 680px;
    padding: 1.75rem;
    background: white;
    border: 1px solid #dce3ed;
    border-radius: 14px;
}

.field { display: grid; gap: .45rem; }
.field label { font-weight: 700; }
.field input, .field select {
    width: 100%;
    padding: .8rem .9rem;
    border: 1px solid #aeb9c9;
    border-radius: 8px;
    background: white;
    font: inherit;
}

.field input:focus, .field select:focus {
    outline: 3px solid rgb(65 115 190 / 20%);
    border-color: #3567ae;
}

.field-error { color: #a52323; font-weight: 650; }
.form-actions { display: flex; align-items: center; gap: 1rem; }
.notice, .flash {
    margin-bottom: 1.25rem;
    padding: .85rem 1rem;
    border-radius: 8px;
}
.notice { border: 1px solid #e7ca74; background: #fff9df; color: #705714; }
.flash { border: 1px solid #88cfb2; background: #eafaf3; color: #145a3d; }

.table-wrap {
    overflow-x: auto;
    background: white;
    border: 1px solid #dce3ed;
    border-radius: 14px;
}
table { width: 100%; border-collapse: collapse; }
th, td { padding: 1rem 1.15rem; border-bottom: 1px solid #e5eaf1; text-align: left; }
th { color: #526075; font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; }
tbody tr:last-child td { border-bottom: 0; }
.table-action { text-align: right; }
.table-action a { color: #24508f; font-weight: 700; text-decoration: none; }
.empty-state {
    padding: 3rem 1.5rem;
    background: white;
    border: 1px dashed #aeb9c9;
    border-radius: 14px;
    text-align: center;
}
.empty-state h2 { margin-top: 0; }
.admin-hero { margin-bottom: 2.5rem; }
.admin-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr);
    gap: 2rem;
    align-items: start;
}
.admin-grid h2, .admin-list h2 { margin-top: 0; }
.admin-grid .data-form { max-width: none; }
.admin-grid fieldset {
    display: grid;
    gap: 1rem;
    margin: 0;
    padding: 1rem;
    border: 1px solid #dce3ed;
    border-radius: 10px;
}
.admin-grid legend { padding: 0 .4rem; font-weight: 750; }
.admin-list { margin-top: 3rem; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 600px) {
    .topbar-inner { align-items: flex-start; gap: 1rem; }
    .topbar nav { align-items: flex-end; flex-direction: column; gap: .6rem; }
    .brand img { width: 170px; }
    .page-heading { align-items: flex-start; flex-direction: column; }
    .data-form { padding: 1.25rem; }
    .admin-grid { grid-template-columns: 1fr; }
}