:root {
    --ink: #18202f;
    --muted: #647084;
    --line: #dce2eb;
    --paper: #ffffff;
    --wash: #f3f6fa;
    --blue: #2859d9;
    --blue-dark: #183b99;
    --green: #14845f;
    --amber: #c07814;
    --red: #bd3c4d;
    --shadow: 0 16px 45px rgba(25, 43, 77, .08);
}

* { box-sizing: border-box; }
html { color-scheme: light; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: var(--wash); color: var(--ink); }
body { margin: 0; min-height: 100vh; }
a { color: var(--blue); }
code { font-family: "SFMono-Regular", Consolas, monospace; font-size: .88em; }

.topbar { min-height: 72px; padding: 0 4vw; display: flex; align-items: center; gap: 28px; background: #101a32; color: white; }
.brand { color: white; text-decoration: none; font-weight: 760; letter-spacing: -.02em; display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.brand span, .brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: linear-gradient(135deg, #3972ff, #7d4cff); color: white; font-size: .8rem; letter-spacing: .03em; box-shadow: 0 8px 18px rgba(48, 88, 220, .28); }
.topbar nav { display: flex; align-self: stretch; gap: 4px; overflow-x: auto; flex: 1; }
.topbar nav { scrollbar-width: none; }
.topbar nav::-webkit-scrollbar { display: none; }
.topbar nav a { display: flex; align-items: center; color: #b9c2d8; padding: 0 12px; text-decoration: none; font-size: .91rem; border-bottom: 3px solid transparent; white-space: nowrap; }
.topbar nav a:hover, .topbar nav a.active { color: white; border-bottom-color: #6f8dff; }
.topbar form { margin: 0; }

.container { width: min(1180px, 92vw); margin: 42px auto 72px; }
.page-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 26px; }
.page-heading h1 { margin: 3px 0 6px; font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -.045em; line-height: 1.05; }
.page-heading p { margin: 5px 0; color: var(--muted); }
.eyebrow { text-transform: uppercase; letter-spacing: .13em; font-weight: 750; font-size: .72rem; color: var(--blue) !important; }
.version { background: #e5ebfa; color: var(--blue-dark); border-radius: 999px; padding: 7px 10px; font-size: .8rem; }

.status-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 20px; }
.status-card { background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 20px; display: flex; align-items: center; gap: 14px; box-shadow: var(--shadow); }
.status-card div { display: grid; gap: 4px; }
.status-card small { color: var(--muted); }
.dot { width: 13px; height: 13px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 6px rgba(192,120,20,.1); flex: 0 0 auto; }
.dot.ok { background: var(--green); box-shadow: 0 0 0 6px rgba(20,132,95,.1); }
.dot.off { background: var(--amber); }

.panel, .callout { background: var(--paper); border: 1px solid var(--line); border-radius: 20px; padding: clamp(20px, 3vw, 30px); box-shadow: var(--shadow); margin-bottom: 22px; }
.panel h2 { margin: 0 0 18px; letter-spacing: -.025em; }
.panel-heading { display: flex; justify-content: space-between; gap: 24px; margin-bottom: 20px; }
.panel-heading h2, .panel-heading p { margin: 0 0 4px; }
.panel-heading p { color: var(--muted); font-size: .92rem; }
.callout { background: linear-gradient(135deg, #f4f7ff, #fff); border-color: #ccd8fa; }
.callout p { color: var(--muted); }
.button-link { display: inline-block; padding: 10px 14px; border-radius: 10px; background: var(--blue); color: white; text-decoration: none; font-weight: 700; font-size: .9rem; }

.two-columns { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr); gap: 22px; align-items: start; }
.mappings-layout { grid-template-columns: minmax(300px, .72fr) minmax(0, 1.28fr); }
.narrow { max-width: 700px; }
.stack { display: grid; gap: 17px; }
label { display: grid; gap: 7px; font-weight: 680; font-size: .9rem; }
label small { color: var(--muted); font-weight: 450; }
input, select, textarea { width: 100%; border: 1px solid #c8d0dc; border-radius: 10px; background: #fbfcfe; color: var(--ink); padding: 11px 12px; font: inherit; outline: none; transition: border .15s, box-shadow .15s; }
input:focus, select:focus, textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(40,89,217,.12); }
textarea { resize: vertical; }
.check { display: flex; align-items: center; gap: 9px; font-weight: 500; }
.check input { width: auto; }
button { border: 0; border-radius: 10px; padding: 11px 15px; background: var(--blue); color: white; font: inherit; font-weight: 720; cursor: pointer; }
button:hover { background: var(--blue-dark); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.secondary { background: #e9eefb; color: var(--blue-dark); }
button.secondary:hover { background: #dce5fa; }
button.ghost { background: transparent; border: 1px solid #4b5771; color: #dce3f1; }
button.danger { background: #fbe9ec; color: var(--red); }
button.small { padding: 7px 10px; font-size: .78rem; }
.inline-form { display: inline-flex; }
.top-space { margin-top: 18px; }

.alert { margin-bottom: 20px; border-radius: 12px; padding: 13px 15px; border: 1px solid; }
.alert.success { background: #ecf8f3; border-color: #b5e1d0; color: #0c6346; }
.alert.error { background: #fff0f2; border-color: #f0c2c9; color: #8f2838; }
.muted, .empty { color: var(--muted); }
.empty { text-align: center; padding: 25px 10px; }
.small-text { font-size: .86rem; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th { text-align: left; color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; }
th, td { padding: 12px 10px; border-bottom: 1px solid #e8ecf2; vertical-align: top; }
.badge { display: inline-block; border-radius: 999px; padding: 4px 8px; font-weight: 750; font-size: .72rem; background: #edf0f5; }
.badge.created, .badge.updated { color: var(--green); background: #e5f5ef; }
.badge.cancelled, .badge.rejected, .badge.error { color: var(--red); background: #fae8eb; }
.badge.duplicate, .badge.ignored { color: #7b5b16; background: #faf1da; }

.course-list { display: grid; gap: 10px; }
.course-list article { display: flex; justify-content: space-between; gap: 15px; align-items: center; border: 1px solid var(--line); border-radius: 13px; padding: 14px; }
.course-list article > div { display: grid; gap: 5px; }
.course-list small { color: var(--muted); }
.course-list code { color: var(--blue-dark); }
.note { border-top: 1px solid var(--line); margin-top: 28px; padding-top: 20px; display: grid; gap: 7px; }
.note code { display: block; background: var(--wash); padding: 7px 9px; border-radius: 7px; overflow-wrap: anywhere; }
.steps { margin: 0; padding-left: 22px; color: var(--muted); }
.steps li { padding: 5px 0 5px 5px; line-height: 1.5; }
.steps strong { color: var(--ink); }
.steps code { color: var(--blue-dark); overflow-wrap: anywhere; }

.log-list { display: grid; gap: 8px; }
.log { display: grid; grid-template-columns: 140px minmax(200px, .8fr) minmax(260px, 1.2fr); gap: 14px; align-items: start; padding: 11px 12px; border-left: 3px solid #aab3c3; background: #f8f9fb; border-radius: 4px 10px 10px 4px; font-size: .82rem; }
.log.warning { border-left-color: var(--amber); }
.log.error { border-left-color: var(--red); }
.log time { color: var(--muted); }
.log code { white-space: normal; overflow-wrap: anywhere; color: #4a5362; }

footer { color: #7a8494; text-align: center; padding: 0 20px 35px; font-size: .8rem; }
.login-page { background: radial-gradient(circle at 20% 20%, #e9efff 0, transparent 35%), radial-gradient(circle at 80% 80%, #efe9ff 0, transparent 32%), #f6f8fc; }
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: min(430px, 100%); background: rgba(255,255,255,.9); border: 1px solid rgba(209,218,232,.9); border-radius: 24px; box-shadow: 0 30px 80px rgba(25,43,77,.13); padding: clamp(28px, 6vw, 46px); backdrop-filter: blur(12px); }
.login-card h1 { margin: 3px 0 8px; font-size: 2.4rem; letter-spacing: -.05em; }
.login-card .brand-mark { margin-bottom: 24px; width: 48px; height: 48px; }
.login-card .muted { margin-bottom: 28px; line-height: 1.55; }

@media (max-width: 850px) {
    .topbar { padding: 12px 4vw; flex-wrap: wrap; gap: 10px 18px; }
    .topbar nav { order: 3; width: 100%; height: 42px; }
    .topbar nav { flex: 0 0 100%; }
    .topbar > form { margin-left: auto; }
    .topbar nav a { padding: 0 10px; }
    .status-grid, .two-columns { grid-template-columns: 1fr; }
    .container { margin-top: 28px; }
    .log { grid-template-columns: 1fr; gap: 5px; }
}

@media (max-width: 520px) {
    .topbar .brand { flex: 1; }
    .status-card { padding: 16px; }
    .page-heading h1 { font-size: 2rem; }
    .course-list article { align-items: flex-start; }
}