:root {
    --bg: #f5f7fb;
    --surface: #ffffff;
    --text: #10203a;
    --muted: #52627a;
    --accent: #0f62fe;
    --danger: #b42318;
    --border: #d0d9e5;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", "Helvetica Neue", sans-serif;
    color: var(--text);
    background: linear-gradient(180deg, #f8fbff 0%, #eef3fc 100%);
}

.container {
    max-width: 860px;
    margin: 0 auto;
    padding: 2rem 1rem 4rem;
}

.hero h1 {
    font-size: clamp(2rem, 3vw, 2.8rem);
    margin-bottom: 0.3rem;
}

.hero p {
    color: var(--muted);
    margin-top: 0;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1.2rem;
    box-shadow: 0 10px 24px rgba(16, 32, 58, 0.08);
}

form {
    display: grid;
    gap: 0.8rem;
}

label {
    display: grid;
    gap: 0.35rem;
    font-weight: 600;
}

input,
textarea,
select,
button {
    font: inherit;
    padding: 0.65rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
}

textarea {
    min-height: 110px;
    resize: vertical;
}

button {
    background: var(--accent);
    color: #fff;
    border: none;
    cursor: pointer;
    font-weight: 600;
}

button:hover {
    filter: brightness(1.08);
}

.status {
    min-height: 1.3rem;
    color: var(--muted);
}

.status.error {
    color: var(--danger);
}

.small-link {
    margin-top: 1.2rem;
}

.small-link a {
    color: var(--accent);
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 0.8rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.8rem;
}

.stack {
    display: grid;
    gap: 1rem;
}

.flash {
    padding: 0.65rem 0.8rem;
    border-radius: 8px;
    background: #eaf1ff;
    color: #173c80;
}

.flash.error {
    background: #ffefef;
    color: #8a1f1f;
}

.table-wrap {
    overflow-x: auto;
}

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

th,
td {
    text-align: left;
    padding: 0.55rem;
    border-bottom: 1px solid var(--border);
}

@media (max-width: 720px) {
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
}