:root {
    color-scheme: light;
    --ink: #172033;
    --muted: #657086;
    --line: #dfe4ec;
    --surface: #ffffff;
    --page: #f4f6f9;
    --primary: #1357d6;
    --primary-dark: #0d43ab;
    --danger: #b42318;
    --success: #087443;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--page); color: var(--ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.5; }
header { min-height: 68px; padding: 14px clamp(18px, 4vw, 54px); display: flex; justify-content: space-between; align-items: center; gap: 24px; background: var(--surface); border-bottom: 1px solid var(--line); }
header > div { display: flex; align-items: baseline; gap: 12px; }
.role { color: var(--muted); font-size: .82rem; }
nav { display: flex; align-items: center; gap: 20px; }
nav a, .link-button { color: var(--ink); text-decoration: none; font: inherit; font-size: .92rem; }
nav a:hover, .link-button:hover { color: var(--primary); }
nav form { margin: 0; }
.link-button { padding: 0; border: 0; background: transparent; cursor: pointer; }
main { width: min(960px, calc(100% - 32px)); margin: clamp(36px, 8vh, 80px) auto; }
.card { padding: clamp(24px, 5vw, 42px); background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 12px 35px rgba(23, 32, 51, .06); }
.narrow, .login-card { max-width: 560px; margin-inline: auto; }
.login-card { max-width: 460px; }
.stack { display: grid; gap: 24px; }
h1 { margin: 0 0 8px; font-size: clamp(1.7rem, 4vw, 2.35rem); line-height: 1.15; }
h2 { margin: 0 0 20px; font-size: 1.2rem; }
.eyebrow { margin: 0 0 10px; color: var(--primary); font-size: .74rem; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.muted { margin-top: 0; color: var(--muted); }
form { margin-top: 28px; }
label { display: block; margin: 0 0 7px; font-size: .85rem; font-weight: 700; }
input, select, button { min-height: 46px; border-radius: 9px; font: inherit; }
input, select { width: 100%; padding: 10px 12px; color: var(--ink); background: white; border: 1px solid #c9d1dd; }
input:focus, select:focus { outline: 3px solid rgba(19, 87, 214, .15); border-color: var(--primary); }
label:not(:first-of-type), input + label { margin-top: 17px; }
button { padding: 10px 17px; border: 1px solid #c9d1dd; background: white; color: var(--ink); font-weight: 700; cursor: pointer; }
button:hover { background: #f7f8fa; }
button.primary { width: 100%; margin-top: 18px; color: white; border-color: var(--primary); background: var(--primary); }
button.primary:hover { background: var(--primary-dark); }
button:disabled { opacity: .55; cursor: not-allowed; }
button.danger { color: var(--danger); }
.current { display: grid; gap: 3px; margin-top: 26px; padding: 18px; background: #f7f9fc; border: 1px solid var(--line); border-radius: 10px; }
.current span { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; }
.current strong { font-size: 1.1rem; }
.current code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.current code { color: var(--primary); font-size: 1rem; }
.flash { max-width: 960px; margin: 0 auto 18px; padding: 12px 15px; border-radius: 9px; font-weight: 650; }
.flash.success { color: var(--success); background: #eaf8f1; border: 1px solid #a6dfc1; }
.flash.error { color: var(--danger); background: #fff0ee; border: 1px solid #f2b8b1; }
.add-form { display: grid; grid-template-columns: 1.2fr 1fr auto; align-items: end; gap: 14px; }
.add-form button.primary { width: auto; margin: 0; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { padding: 10px; color: var(--muted); border-bottom: 1px solid var(--line); font-size: .75rem; letter-spacing: .06em; text-align: left; text-transform: uppercase; }
td { padding: 10px 0; border-bottom: 1px solid var(--line); }
.row-form { display: grid; grid-template-columns: 1.2fr 1fr auto; gap: 10px; margin: 0; }
.actions { display: flex; gap: 7px; }
.empty-table { padding: 24px 10px; color: var(--muted); text-align: center; }

@media (max-width: 720px) {
    header { align-items: flex-start; flex-direction: column; }
    nav { width: 100%; flex-wrap: wrap; gap: 14px; }
    main { margin-top: 28px; }
    .add-form, .row-form { grid-template-columns: 1fr; }
    .add-form button.primary { width: 100%; }
    table thead { display: none; }
    .row-form { padding: 10px 0; }
}