:root {
  --bg: #05060a;
  --card: rgba(255, 255, 255, 0.04);
  --card-border: rgba(255, 255, 255, 0.09);
  --text: #e8ecf4;
  --muted: #8b93a7;
  --accent: #00e5ff;
  --accent-2: #7c5cff;
  --danger: #ff6b6b;
  --radius: 16px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.aurora { position: fixed; inset: 0; z-index: -1; overflow: hidden;
  background: radial-gradient(circle at 50% -10%, #10131f 0%, var(--bg) 60%); }
.blob { position: absolute; width: 46vw; height: 46vw; border-radius: 50%;
  filter: blur(90px); opacity: 0.45; }
.blob-1 { background: var(--accent); top: -12%; left: -8%; }
.blob-2 { background: var(--accent-2); bottom: -18%; right: -10%; }

.site-header { max-width: 960px; width: 100%; margin: 0 auto;
  padding: 24px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none;
  color: var(--text); font-weight: 700; font-size: 1.1rem; }
.brand-mark { width: 20px; height: 26px; border-radius: 4px;
  border: 3px solid var(--accent); position: relative; }
.brand-mark::after { content: ""; position: absolute; right: 3px; top: 9px;
  width: 4px; height: 4px; border-radius: 50%; background: var(--accent); }
.accent { color: var(--accent); }
.site-nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.site-nav a:hover { color: var(--text); }

.hero { max-width: 720px; margin: 0 auto; padding: 60px 24px; text-align: center; flex: 1; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.75rem;
  color: var(--accent); font-weight: 600; margin: 0 0 16px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.08; margin: 0 0 18px;
  letter-spacing: -0.02em; }
.subhead { color: var(--muted); font-size: 1.1rem; max-width: 560px; margin: 0 auto 34px; }
.steps { display: grid; gap: 12px; max-width: 520px; margin: 0 auto 28px; text-align: left; }
.step { background: var(--card); border: 1px solid var(--card-border);
  border-radius: 12px; padding: 14px 16px; display: flex; align-items: center; gap: 12px; }
.num { display: grid; place-items: center; width: 26px; height: 26px; flex: none;
  border-radius: 50%; background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #05060a; font-weight: 700; font-size: 0.85rem; }
.note { color: var(--muted); font-size: 0.95rem; }

.card-wrap { flex: 1; display: flex; align-items: center; justify-content: center; padding: 40px 24px; }
.card { width: 100%; max-width: 440px; background: var(--card);
  border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: 32px; backdrop-filter: blur(8px); }
.card h1 { font-size: 1.5rem; margin: 0 0 10px; }
.lead { color: var(--muted); margin: 0 0 24px; }

label { display: block; font-size: 0.9rem; font-weight: 500; margin-bottom: 6px; }
input[type="email"] { width: 100%; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--card-border); background: rgba(0,0,0,0.25);
  color: var(--text); font-size: 1rem; }
input[type="email"]:focus { outline: none; border-color: var(--accent); }
.hint { color: var(--muted); font-size: 0.82rem; margin: 8px 0 0; }
button { width: 100%; margin-top: 20px; padding: 13px; border: none; border-radius: 999px;
  background: linear-gradient(120deg, var(--accent), var(--accent-2)); color: #05060a;
  font-weight: 600; font-size: 1rem; cursor: pointer; transition: transform 0.15s, opacity 0.15s; }
button:hover { transform: translateY(-1px); }
button:disabled { opacity: 0.6; cursor: default; transform: none; }

.state { text-align: center; }
.check { width: 56px; height: 56px; margin: 0 auto 16px; border-radius: 50%;
  display: grid; place-items: center; font-size: 1.6rem; color: #05060a;
  background: linear-gradient(120deg, #4ade80, #22c55e); }
.error { color: var(--danger); font-size: 0.9rem; margin-top: 16px; text-align: center; }
.hidden { display: none; }

.site-footer { max-width: 960px; width: 100%; margin: 0 auto; padding: 24px;
  text-align: center; color: var(--muted); }
.fine { font-size: 0.75rem; opacity: 0.7; }

/* ---- linking flow (link.html) ---- */
.spinner { width: 44px; height: 44px; margin: 0 auto 18px; border-radius: 50%;
  border: 4px solid rgba(255,255,255,0.12); border-top-color: var(--accent);
  animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 2.5s; } }

.section-title { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--muted); margin: 26px 0 10px; text-align: left; }
.devices { list-style: none; padding: 0; margin: 0; text-align: left; }
.device { display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px; border: 1px solid var(--card-border); border-radius: 10px;
  margin-bottom: 8px; }
.device-name { font-weight: 500; }
.badge { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em;
  padding: 3px 9px; border-radius: 999px; border: 1px solid var(--card-border); }
.badge.online { color: #4ade80; border-color: rgba(74,222,128,0.4); }
.badge.offline { color: #fbbf24; border-color: rgba(251,191,36,0.4); }
.badge.unknown { color: var(--muted); }
.whats-next { text-align: left; }

.btn { display: inline-block; margin-top: 22px; padding: 12px 26px; border-radius: 999px;
  background: linear-gradient(120deg, var(--accent), var(--accent-2)); color: #05060a;
  font-weight: 600; text-decoration: none; transition: transform 0.15s; }
.btn:hover { transform: translateY(-1px); }
.btn.secondary { background: transparent; color: var(--text);
  border: 1px solid var(--card-border); }

/* ---- nav buttons ---- */
.nav-btn { background: transparent; border: 1px solid var(--card-border); color: var(--text);
  padding: 8px 16px; border-radius: 999px; font-size: 0.9rem; cursor: pointer; font-weight: 500; }
.nav-btn:hover { border-color: var(--accent); }
#nav-login { background: linear-gradient(120deg, var(--accent), var(--accent-2)); color: #05060a; border: none; }

/* ---- login modal ---- */
.modal { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center;
  background: rgba(3,5,10,0.7); backdrop-filter: blur(4px); padding: 20px; }
.modal-card { position: relative; width: 100%; max-width: 400px; background: #0b0e16;
  border: 1px solid var(--card-border); border-radius: var(--radius); padding: 30px; }
.modal-close { position: absolute; top: 12px; right: 14px; background: none; border: none;
  color: var(--muted); font-size: 1.6rem; line-height: 1; cursor: pointer; }
.modal-close:hover { color: var(--text); }
.login-step h2 { margin: 0 0 8px; font-size: 1.35rem; }
.login-step input { width: 100%; padding: 12px 14px; border-radius: 10px; margin-top: 4px;
  border: 1px solid var(--card-border); background: rgba(0,0,0,0.25); color: var(--text); font-size: 1rem; }
.login-step input:focus { outline: none; border-color: var(--accent); }
#login-code { letter-spacing: 6px; font-size: 1.3rem; text-align: center; }
.link-btn { display: block; margin: 14px auto 0; background: none; border: none; color: var(--muted);
  text-decoration: underline; cursor: pointer; font-size: 0.9rem; }
.link-btn:hover { color: var(--text); }

/* ---- dashboard ---- */
.dash { max-width: 720px; margin: 0 auto; padding: 40px 24px 80px; flex: 1; width: 100%; }
.dash-head { margin-bottom: 24px; }
.dash-head h1 { font-size: 1.8rem; margin: 0 0 4px; }
.muted { color: var(--muted); font-size: 0.95rem; }
.events-list { list-style: none; padding: 0; margin: 0; }
.event-row { display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px; border: 1px solid var(--card-border); border-radius: 10px; margin-bottom: 8px; }
.event-label { font-weight: 600; padding: 3px 10px; border-radius: 999px; font-size: 0.85rem;
  border: 1px solid var(--card-border); }
.event-label.open { color: #fbbf24; border-color: rgba(251,191,36,0.4); }
.event-label.closed { color: #4ade80; border-color: rgba(74,222,128,0.4); }
.event-label.other { color: var(--muted); }
.event-time { color: var(--muted); font-size: 0.85rem; }