:root { font-family: system-ui, sans-serif; color: #172b4d; background: #f3f6fb; }
[hidden] { display: none !important; }
body { margin: 0; padding: 24px; }
main { max-width: 640px; margin: 12vh auto; padding: clamp(24px, 5vw, 48px); background: white; border-radius: 20px; box-shadow: 0 12px 40px #172b4d0d; }
h1 { font-size: clamp(2rem, 6vw, 3rem); line-height: 1.15; letter-spacing: -.03em; }
p { line-height: 1.65; }
.eyebrow { color: #1e3a8a; font-weight: 650; }
.notice { padding: 16px; background: #fff6dc; border-radius: 8px; }
form { display: grid; gap: 16px; margin-block: 24px; }
label { display: grid; gap: 7px; font-weight: 600; }
input, select, button { font: inherit; min-height: 48px; box-sizing: border-box; border-radius: 8px; }
input, select { width: 100%; padding: 12px; border: 1px solid #aebcd0; background: #fff; color: #172b4d; }
button { cursor: pointer; border: 0; padding: 12px 20px; background: #1e3a8a; color: white; font-weight: 650; }
button:disabled { opacity: .55; cursor: wait; }
button.secondary { background: #e9eef7; color: #172b4d; margin: 4px 8px 4px 0; }
:focus-visible { outline: 3px solid #d97706; outline-offset: 3px; }
.error { padding: 14px; background: #fef0ef; color: #9f2020; border-radius: 8px; }
.status { padding: 18px; background: #eef3fc; border-radius: 10px; }
.success { background: #e4f5ea; color: #155b32; }
.device-card { border-top: 1px solid #dce4ef; margin-top: 24px; padding-top: 12px; }
.update-notice { padding: 14px; background: #fff6dc; border-radius: 8px; }
.admin main { max-width: 1120px; margin: 32px auto; }
.admin #app > form { max-width: 520px; }
.admin .device-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); gap: 24px; align-items: start; }
.admin .device-card { margin: 0; border: 1px solid #dce4ef; padding: 20px; border-radius: 12px; }
.admin .device-card h3 { margin-top: 0; }
.planner-nav { display: flex; gap: 8px; flex-wrap: wrap; margin-block: 24px; }
.planner-nav button { flex: 1; white-space: nowrap; }
.primary-action { display: block; width: 100%; min-height: 100px; margin-block: 16px; font-size: 1.2rem; }
.shift-menu { margin-top: 28px; }
table { width: 100%; border-collapse: collapse; text-align: left; }
th, td { padding: 14px 10px; border-bottom: 1px solid #dce4ef; vertical-align: top; }
th { background: #f3f6fb; }
.board { overflow-x: auto; }
.unregistered-routes { margin-top: 24px; }
@media (max-width: 700px) {
  .board table, .board tbody { display: block; }
  .board thead { display: none; }
  .board tr { display: grid; gap: 5px; border: 1px solid #dce4ef; border-radius: 12px; margin-block: 12px; padding: 14px; }
  .board td { display: block; padding: 4px; border: 0; }
  .board td:first-child { font-weight: 700; }
}
footer { margin-top: 36px; font-size: .9rem; }
a { color: #1e3a8a; text-underline-offset: 3px; }
@media (max-width: 600px) { body { padding: 12px; } main { margin: 20px auto; } }