:root {
  --bg: #f4f2ee; --panel: #ffffff; --ink: #1d232b; --muted: #6b7380; --line: #e2ded6;
  --accent: #0a6abf; --accent-ink: #ffffff; --ok: #2f8f5b; --warn: #b5651d; --bad: #b3261e;
  --radius: 12px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #14181d; --panel: #1d232b; --ink: #e9edf1; --muted: #98a1ad; --line: #2c343e;
          --accent: #4aa8ea; --accent-ink: #0b1418; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-size: 15px; line-height: 1.45;
       -webkit-font-smoothing: antialiased; }
button { font: inherit; cursor: pointer; border-radius: 10px; border: 1px solid var(--line);
         background: var(--panel); color: var(--ink); padding: 10px 16px; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button:disabled { opacity: .55; cursor: default; }
input { font: inherit; width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line);
        background: var(--bg); color: var(--ink); }
.muted { color: var(--muted); }
.error { color: var(--bad); min-height: 1.4em; }

/* login */
.login-wrap { min-height: 100vh; min-height: 100dvh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 380px; background: var(--panel); border: 1px solid var(--line);
              border-radius: 18px; padding: 28px 24px; text-align: center; }
.brand { font-size: 28px; font-weight: 750; letter-spacing: .04em; }
.login-card .big { width: 100%; padding: 14px; font-size: 16px; margin-top: 18px; }
.login-card details { margin-top: 22px; text-align: left; }
.login-card summary { cursor: pointer; color: var(--muted); }
.login-card label { display: block; margin: 12px 0 4px; font-size: 13px; color: var(--muted); }

/* app shell */
header.top { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 12px;
             padding: 12px 20px; background: var(--panel); border-bottom: 1px solid var(--line); }
header.top .brand { font-size: 18px; }
.live { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); }
.dot.on { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 25%, transparent); }
.dot.off { background: var(--bad); }
.spacer { flex: 1; }
main { display: grid; grid-template-columns: 2fr 1fr; gap: 18px; padding: 20px; max-width: 1400px; margin: 0 auto; }
section.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
section.panel h2 { margin: 0 0 4px; font-size: 16px; }
.empty { padding: 28px 8px; text-align: center; color: var(--muted); }
ul.devices { list-style: none; padding: 0; margin: 8px 0 0; }
ul.devices li { padding: 8px 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 8px; }
ul.devices li:first-child { border-top: 0; }

@media (max-width: 760px) {
  main { grid-template-columns: 1fr; padding: 12px; gap: 12px; }
  header.top { padding: 10px 14px; }
}

/* logo + alerts (piece 4) */
.logo-full { width: 210px; max-width: 70%; height: auto; display: block; margin: 0 auto 6px; }
@media (prefers-color-scheme: dark) { .logo-full { background: #fff; border-radius: 12px; padding: 10px 14px; } }
.brand-mark { width: 26px; height: 26px; border-radius: 6px; display: block; }
header.top .brand { display: inline-flex; align-items: center; gap: 8px; }
.alerts-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.note { font-size: 13px; color: var(--muted); margin-top: 8px; }
.howto { margin: 8px 0 0; padding-left: 20px; font-size: 14px; }
.howto li { margin: 4px 0; }

/* reminders (piece 5) */
ul.alarms { list-style: none; padding: 0; margin: 10px 0 4px; }
ul.alarms li { padding: 8px 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 10px; }
ul.alarms li:first-child { border-top: 0; }
button.small { padding: 5px 10px; font-size: 13px; }
#addalarm { margin-top: 8px; }
#addalarm summary { cursor: pointer; color: var(--accent); }
#clockpanel label { display: block; margin: 10px 0 4px; font-size: 13px; color: var(--muted); }
#clockpanel label.check { display: flex; gap: 8px; align-items: center; color: var(--ink); font-size: 14px; }
#clockpanel label.check input { width: auto; }
.arow { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 420px) { .arow { grid-template-columns: 1fr; } }