:root {
  --ink: #07090c;
  --panel: rgba(17, 21, 27, .9);
  --line: rgba(255,255,255,.12);
  --text: #f2f0e9;
  --muted: #969da7;
  --signal: #b7ff3c;
  --blue: #77b8ff;
  --danger: #ff7d73;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 78% 15%, rgba(119,184,255,.12), transparent 28rem),
    radial-gradient(circle at 15% 85%, rgba(183,255,60,.08), transparent 24rem),
    var(--ink);
  font-family: "Avenir Next", "PingFang SC", sans-serif;
}
button, input { font: inherit; }
.grid-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px) 0 0 / 42px 42px,
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px) 0 0 / 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 90%);
}
.site-header {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 40px));
  min-height: 92px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; color: inherit; text-decoration: none; }
.brand-mark {
  width: 36px; height: 36px; display: grid; place-items: center;
  color: var(--ink); background: var(--signal); border-radius: 9px 2px 9px 2px;
  font: 800 17px/1 "SFMono-Regular", monospace;
}
.brand strong, .brand small { display: block; letter-spacing: .1em; }
.brand strong { font-size: 13px; }
.brand small { margin-top: 3px; color: var(--muted); font: 9px/1 "SFMono-Regular", monospace; }
.back-link { color: var(--muted); text-decoration: none; font: 11px/1 "SFMono-Regular", monospace; }
main { position: relative; z-index: 1; width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 60px 0 80px; }
.eyebrow { margin: 0; color: var(--signal); font: 10px/1.5 "SFMono-Regular", monospace; letter-spacing: .17em; }
.auth-layout { min-height: calc(100vh - 230px); display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(390px, .85fr); gap: 76px; align-items: center; }
.auth-intro h1, .account-heading h1 {
  margin: 16px 0 26px; font: 700 clamp(50px, 6.5vw, 88px)/.94 "DIN Alternate", "Avenir Next Condensed", sans-serif; letter-spacing: -.045em;
}
.auth-intro h1 span { color: var(--signal); }
.auth-intro > p:not(.eyebrow) { max-width: 650px; color: #b8bec5; font-size: 17px; line-height: 1.8; }
.privacy-strip { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 46px; color: var(--blue); font: 10px/1 "SFMono-Regular", monospace; }
.auth-card { border: 1px solid var(--line); background: var(--panel); box-shadow: 0 35px 100px rgba(0,0,0,.34); backdrop-filter: blur(18px); }
.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--line); }
.auth-tab {
  min-height: 52px; color: var(--muted); cursor: pointer; border: 0; border-right: 1px solid var(--line); background: transparent;
  font: 700 11px/1 "SFMono-Regular", monospace; letter-spacing: .12em;
}
.auth-tab:last-child { border-right: 0; }
.auth-tab.is-active { color: var(--signal); background: rgba(183,255,60,.06); box-shadow: inset 0 -2px var(--signal); }
.auth-form { display: grid; gap: 19px; padding: 34px 36px 36px; }
.auth-form h2, .action-message h2, .devices-panel h2 { margin: 8px 0 0; font-size: 26px; }
.form-copy, .form-footnote { color: var(--muted); font-size: 12px; line-height: 1.7; }
.form-copy { margin-bottom: 0; }
.form-footnote { margin: 0; padding-top: 16px; border-top: 1px solid var(--line); }
label { display: grid; gap: 8px; color: #cbd0d5; font-size: 12px; }
input {
  width: 100%; min-height: 48px; padding: 0 14px; color: var(--text);
  border: 1px solid var(--line); border-radius: 2px; outline: 0; background: rgba(255,255,255,.045);
}
input:focus { border-color: rgba(183,255,60,.65); background: rgba(255,255,255,.07); }
input:disabled { opacity: .58; }
.password-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.primary-button, .ghost-button {
  min-height: 44px; padding: 0 18px; cursor: pointer; font-weight: 700;
  border: 1px solid var(--signal); border-radius: 2px;
}
.primary-button { color: var(--ink); background: var(--signal); }
.primary-button:disabled { cursor: wait; opacity: .62; }
.ghost-button { color: var(--text); background: transparent; border-color: var(--line); }
.text-button { width: max-content; padding: 0; color: var(--blue); cursor: pointer; border: 0; background: none; font-size: 12px; }
.form-error { min-height: 18px; margin: 0; color: var(--danger); font-size: 12px; }
.action-message { display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: start; margin: 30px 36px 0; padding: 18px; border: 1px solid rgba(183,255,60,.24); background: rgba(183,255,60,.07); }
.action-message.is-error { border-color: rgba(255,125,115,.3); background: rgba(255,125,115,.07); }
.action-message.is-error .action-mark { color: var(--danger); border-color: var(--danger); }
.action-message p:last-child { margin: 9px 0 0; color: #c2c7cc; font-size: 12px; line-height: 1.65; }
.action-mark { display: grid; place-items: center; width: 30px; height: 30px; color: var(--signal); border: 1px solid var(--signal); border-radius: 50%; font-weight: 800; }
.is-hidden { display: none !important; }
.account-heading { display: flex; justify-content: space-between; align-items: end; margin-bottom: 48px; }
.account-heading h1 { margin-bottom: 10px; }
.account-heading > div > p:last-child { margin: 0; color: var(--muted); }
.account-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 14px; }
.plan-card, .device-summary, .devices-panel { position: relative; overflow: hidden; border: 1px solid var(--line); background: var(--panel); }
.plan-card, .device-summary { min-height: 330px; padding: 30px; }
.card-index { position: absolute; right: 20px; bottom: -18px; color: rgba(255,255,255,.035); font: 800 110px/1 "DIN Alternate", sans-serif; }
.plan-card h2 { margin: 18px 0 7px; font-size: 24px; }
.plan-price { display: block; margin: 24px 0 28px; font: 700 58px/1 "DIN Alternate", sans-serif; }
dl { margin: 0; display: grid; gap: 1px; }
dl div { display: flex; justify-content: space-between; gap: 20px; padding: 12px 0; border-top: 1px solid var(--line); }
dt { color: var(--muted); } dd { margin: 0; font-weight: 650; text-align: right; }
.device-summary { display: flex; flex-direction: column; justify-content: space-between; }
.device-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 35px 0; }
.device-metrics div { padding: 20px; border: 1px solid var(--line); }
.device-metrics strong, .device-metrics span { display: block; }
.device-metrics strong { color: var(--signal); font: 700 48px/1 "DIN Alternate", sans-serif; }
.device-metrics span { margin-top: 10px; color: var(--muted); font-size: 11px; }
.device-summary > p:last-child { max-width: 440px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.devices-panel { margin-top: 14px; padding: 30px; }
.panel-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 24px; }
.live-label { color: var(--muted); font: 10px/1 "SFMono-Regular", monospace; }
.live-label i { display: inline-block; width: 7px; height: 7px; margin-right: 7px; border-radius: 50%; background: var(--signal); }
.device-list { display: grid; gap: 8px; }
.device-row { display: grid; grid-template-columns: 1.4fr .7fr .7fr .8fr; gap: 18px; align-items: center; padding: 17px 18px; border: 1px solid var(--line); background: rgba(255,255,255,.025); }
.device-row strong, .device-row small { display: block; }
.device-row small { margin-top: 5px; color: var(--muted); font-size: 10px; }
.device-row > span { color: #bac0c6; font-size: 12px; }
.state-online { color: var(--signal) !important; }
.empty-state { padding: 34px; text-align: center; color: var(--muted); border: 1px dashed var(--line); }
@media (max-width: 860px) {
  .auth-layout, .account-grid { grid-template-columns: 1fr; }
  .auth-layout { gap: 42px; }
  .site-header { min-height: 78px; }
  main { padding-top: 46px; }
  .auth-card { width: min(100%, 620px); }
  .account-heading, .panel-heading { align-items: flex-start; flex-direction: column; }
  .device-row { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .site-header, main { width: min(100% - 28px, 1180px); }
  .back-link { display: none; }
  .auth-intro h1 { font-size: 45px; }
  .auth-form { padding: 26px 22px 24px; }
  .action-message { margin: 22px 22px 0; }
  .password-grid { grid-template-columns: 1fr; }
  .plan-card, .device-summary, .devices-panel { padding: 22px; }
  .device-row { grid-template-columns: 1fr; }
}