:root { color-scheme: light; font-family: system-ui, -apple-system, "PingFang SC", sans-serif; color: #173d37; background: #f3f6f2; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.card { width: min(100%, 520px); padding: clamp(28px, 6vw, 48px); background: #fff; border: 1px solid #dce8e1; border-radius: 24px; box-shadow: 0 16px 50px #143d3710; }
.mark { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 16px; background: #143d37; color: #fff; font-size: 30px; font-weight: 700; }
.eyebrow { margin: 24px 0 8px; font-size: 12px; font-weight: 700; letter-spacing: .14em; color: #40806e; }
h1 { margin: 0; font-size: clamp(28px, 6vw, 36px); line-height: 1.2; }
.intro { margin: 16px 0 28px; color: #526a61; line-height: 1.7; }
button { width: 100%; border: 0; border-radius: 12px; padding: 14px 20px; background: #143d37; color: #fff; font: inherit; font-weight: 700; cursor: pointer; }
button:hover { background: #225e52; }
button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid #77bca1; outline-offset: 2px; }
button:disabled { opacity: .6; cursor: wait; }
.status { min-height: 1.5em; margin: 16px 0 0; color: #225e52; line-height: 1.5; }
.hint { margin: 28px 0 0; font-size: 13px; color: #71847b; line-height: 1.6; }
form { display: grid; gap: 10px; }
label { margin-top: 10px; font-weight: 600; }
input, textarea { width: 100%; padding: 12px; border: 1px solid #bdcec4; border-radius: 10px; color: inherit; font: inherit; }
textarea { resize: vertical; }
form button { margin-top: 18px; }
.admin-body { display: block; max-width: 1200px; margin: 0 auto; padding: 32px 20px 64px; }
.admin-shell { display: grid; gap: 20px; }
.admin-shell .intro { margin-bottom: 0; }
.panel, .stats > div { background: #fff; border: 1px solid #dce8e1; border-radius: 18px; padding: 24px; }
.panel h2 { margin: 0; font-size: 22px; }
.panel .hint { margin: 10px 0 18px; }
.panel form { max-width: 560px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(165px, 1fr)); gap: 12px; }
.stats > div { display: grid; gap: 10px; }
.stats span { color: #526a61; font-size: 13px; }
.stats strong { font-size: 28px; line-height: 1; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
button.secondary { width: auto; padding: 8px 12px; border: 1px solid #bdcec4; background: #fff; color: #173d37; font-size: 13px; white-space: nowrap; }
button.secondary:hover { background: #f3f6f2; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 12px 10px; border-bottom: 1px solid #e7eee9; text-align: left; vertical-align: top; white-space: nowrap; }
th { color: #526a61; font-weight: 600; }
.message-title { max-width: 220px; overflow-wrap: anywhere; white-space: normal; }
.device-agent { max-width: 260px; overflow-wrap: anywhere; white-space: normal; }
#moreMessages, #moreDevices { margin-top: 16px; }