:root {
  --bg: #0b1020;
  --panel: #0f1530;
  --panel-2: #0b122a;
  --text: #f2f4f8;
  --muted: #b9bfd3;
  --brand: #6c7cff;
  --brand-2: #3ee7b5;
  --line: #202846;
  --success: #38d365;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(108,124,255,.25), transparent),
              radial-gradient(900px 500px at -10% -20%, rgba(62,231,181,.15), transparent),
              var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background: rgba(11, 16, 32, .6);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.logo {
  font-weight: 800;
  font-size: 20px;
}
.logo span { color: var(--brand); }
.nav__links a {
  color: var(--text);
  text-decoration: none;
  margin-left: 18px;
  opacity: .9;
}

/* Hero */
.hero {
  position: relative;
  padding: 72px 0 48px;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 36px;
  align-items: center;
}
.hero h1 { font-size: 44px; margin: 0 0 8px; }
.subtitle { color: var(--muted); margin: 0 0 18px; }
.hero__cta { display: flex; gap: 12px; margin: 18px 0 20px; }
.hub-cta { flex-direction: column; align-items: center; }
.hub-cta .btn { width: 260px; justify-content: center; }
.hero__badges { display: flex; gap: 10px; flex-wrap: wrap; }
.badge { background: rgba(108,124,255,.15); color: #dfe3ff; padding: 6px 10px; border-radius: 999px; font-size: 12px; }
.hero__visual { display: flex; justify-content: flex-end; }
.hero__bg { position: absolute; inset: 0; background: radial-gradient(600px 300px at 80% 0%, rgba(108,124,255,.08), transparent); pointer-events: none; }

/* Sections */
.section { padding: 56px 0; }
.section--alt { background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0)); }
.section h2 { margin: 0 0 8px; font-size: 28px; }
.section__lead { color: var(--muted); margin: 0 0 22px; }

.grid.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.feature__icon { font-size: 22px; }

.grid.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.pricecard { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 18px; display: flex; flex-direction: column; }
.pricecard--pro { border-color: rgba(108,124,255,.6); box-shadow: 0 0 0 1px rgba(108,124,255,.25) inset; }
.pricecard__header { display: flex; align-items: baseline; justify-content: space-between; }
.price { font-size: 28px; font-weight: 800; color: var(--brand); }
.pricecard ul { margin: 12px 0 18px; padding-left: 18px; color: var(--muted); }

/* Tabs */
.tabs { display: inline-flex; gap: 8px; background: var(--panel-2); border: 1px solid var(--line); padding: 6px; border-radius: 12px; }
.tab { background: transparent; color: var(--text); border: 1px solid transparent; padding: 8px 12px; border-radius: 10px; cursor: pointer; }
.tab.is-active { background: rgba(108,124,255,.14); border-color: rgba(108,124,255,.35); }
.tabpanes { margin-top: 18px; }
.tabpane { display: none; }
.tabpane.is-active { display: block; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.card__title { font-weight: 700; margin-bottom: 10px; }
.card__row { display: flex; align-items: center; justify-content: space-between; border-top: 1px dashed #273159; padding: 8px 0; }

/* Lists */
.list { margin: 0; padding-left: 18px; color: var(--muted); }

/* Buttons */
.btn { background: linear-gradient(180deg, #7c8aff, #5767ff); color: white; border: 0; padding: 10px 14px; border-radius: 10px; font-weight: 600; cursor: pointer; box-shadow: 0 4px 18px rgba(108,124,255,.25); }
.btn:hover { filter: brightness(1.05); }
.btn--ghost { background: transparent; color: var(--text); border: 1px solid #33407a; box-shadow: none; }
.btn--sm { padding: 8px 12px; font-size: 14px; }
.btn--block { width: 100%; }
.iconbtn { background: transparent; border: 0; color: var(--text); cursor: pointer; font-size: 16px; }
.chip { padding: 4px 8px; border-radius: 999px; background: #243163; font-size: 12px; }
.chip--success { background: #193b2a; color: #b8ffd0; }

/* Demo */
.demo { display: grid; grid-template-columns: 1.1fr .9fr; gap: 16px; }
.demo__controls { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; align-items: end; }
.demo__controls label { display: grid; gap: 6px; color: var(--muted); font-size: 14px; }
.demo__controls select, .demo__controls input { background: #0b1533; color: var(--text); border: 1px solid #273159; border-radius: 8px; padding: 8px 10px; }
.demo__panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.stat { background: #0b1533; border: 1px solid #273159; border-radius: 12px; padding: 12px; }
.stat__label { color: var(--muted); font-size: 12px; }
.stat__value { font-size: 22px; font-weight: 800; margin-top: 4px; }
/* Auth */
.auth { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 12px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 12px; align-items: end; }
.auth label { display: grid; gap: 6px; color: var(--muted); font-size: 14px; }
.auth input { background: #0b1533; color: var(--text); border: 1px solid #273159; border-radius: 8px; padding: 8px 10px; }
.auth__status { grid-column: 1 / -1; color: var(--muted); font-size: 13px; }
.auth__user { color: #dfe3ff; font-weight: 600; }
/* Highlight pulse */
.pulse { box-shadow: 0 0 0 3px rgba(108,124,255,.45), 0 0 0 10px rgba(108,124,255,.18); transition: box-shadow .4s ease; }
/* Usage meter */
.demo__graph { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 12px; margin-bottom: 12px; grid-column: 1 / -1; }
.demo__graph canvas { width: 100%; height: 180px; display: block; }
.usage { display: none; }

/* Admin */
.admin { display: grid; grid-template-columns: 1.1fr .9fr; gap: 16px; }
.admin__controls { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; align-items: end; }
.admin__controls label { display: grid; gap: 6px; color: var(--muted); font-size: 14px; }
.admin__controls input, .admin__controls select { background: #0b1533; color: var(--text); border: 1px solid #273159; border-radius: 8px; padding: 8px 10px; }
.admin__preview { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.toast { margin-top: 8px; color: #b8ffd0; background: #143a28; border: 1px solid #1c5e3e; padding: 8px 10px; border-radius: 8px; display: none; }
/* Tables */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.table th { color: var(--muted); font-weight: 600; }
.tag { padding: 4px 8px; border-radius: 999px; font-size: 12px; border: 1px solid #273159; }
.tag--danger { color: #ffd1d1; background: #3a1414; border-color: #5e1c1c; }
.tag--warn { color: #fff0cc; background: #3a2a14; border-color: #5e451c; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 32px 0; margin-top: 24px; background: rgba(255,255,255,.02); }
.footer__inner { display: flex; align-items: center; justify-content: space-between; }
.footer__links a { color: var(--muted); text-decoration: none; margin-left: 14px; }

/* Modal */
.modal { position: fixed; inset: 0; display: grid; place-items: center; background: rgba(0,0,0,.45); }
.modal[hidden] { display: none; }
.modal__dialog { width: min(520px, 92vw); background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 14px; box-shadow: 0 30px 80px rgba(0,0,0,.35); }
.modal__header { display: flex; align-items: center; justify-content: space-between; }
.modal__body { color: var(--muted); margin: 10px 0 16px; }
.modal__actions { display: flex; gap: 10px; justify-content: flex-end; }
.modal form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 16px;
}

.modal form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 14px;
  font-weight: 500;
}

.modal form input,
.modal form select {
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

/* Cards */
.cards .pricecard button { margin-top: auto; }

/* Payment page specific helpers (keeps visual theme consistent with main site) */
.payment-card { max-width: 980px; margin: 28px auto; padding: 20px; border-radius: 12px; background: var(--panel); border: 1px solid var(--line); box-shadow: 0 10px 30px rgba(2,6,23,0.45); }

.plans-row { display:flex; gap:16px; flex-wrap:wrap; align-items: start; }
.plan-col { flex:1; min-width:260px; }
.plan { background: transparent; border-radius: 12px; padding: 12px; }
.plan-box { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 14px; margin-bottom: 8px; }
.price { font-size: 18px; font-weight: 800; color: var(--brand); margin: 6px 0 8px; }
.actions { display:flex; gap:10px; margin-top:12px; align-items:center; }

/* Button aliases used by payment.html to match existing .btn styles */
.btn { /* keep existing look, ensure availability */ background: linear-gradient(180deg, #7c8aff, #5767ff); color: white; border: 0; padding: 10px 14px; border-radius: 10px; font-weight: 600; cursor: pointer; box-shadow: 0 4px 18px rgba(108,124,255,.25); }
.btn:hover { filter: brightness(1.05); }
.btn.primary { /* alias for main action (keeps parity) */ background: linear-gradient(180deg, #7c8aff, #5767ff); color: #fff; border: 0; box-shadow: 0 6px 22px rgba(108,124,255,.16); }
.btn.ghost { /* alias for ghost variant (keeps parity) */ background: transparent; color: var(--text); border: 1px solid #33407a; box-shadow: none; }

/* Message box on payment page */
.msg, .message { margin-top:12px; padding:10px; border-radius:8px; display:none; background: rgba(108,124,255,0.06); color: var(--muted); border: 1px solid rgba(108,124,255,0.06); }
/* ensure message element is visible when toggled */
.msg[style] { display: block; }

/* small helper utilities used by payment.html */
.small { font-size: 13px; }
.muted { color: var(--muted); }
.note { margin-top:8px; color: var(--muted); }

/* Form inputs reuse existing auth styles */
input[type="email"], input[type="password"], input[type="text"], textarea {
  background: #0b1533;
  color: var(--text);
  border: 1px solid #273159;
  border-radius: 8px;
  padding: 8px 10px;
  width: 100%;
}

/* Ensure responsive stacking like main layout */
@media (max-width: 820px) {
  .plans-row { flex-direction: column; }
  .plan-col { min-width: auto; }
}
/* Small screens */
@media (max-width: 940px) {
  .hero__inner, .demo, .admin { grid-template-columns: 1fr; }
  .grid.features { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .nav__inner { flex-direction: column; gap: 10px; }
  .nav__links { display: flex; flex-wrap: wrap; justify-content: center; }
  .grid.features { grid-template-columns: 1fr; }
  .grid.cards { grid-template-columns: 1fr; }
  .demo__controls, .admin__controls { grid-template-columns: 1fr 1fr; }
  .auth { grid-template-columns: 1fr 1fr; }
}

/* Device Manager */
.device-manager {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  grid-column: 1 / -1;
}

.device-manager h4 {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
}

.device-list {
  margin-bottom: 12px;
  font-size: 14px;
}

.device-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px; /* Reduced padding for a smaller block */
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: 8px;
}

.device-item__info {
  display: flex;
  gap: 8px;
  align-items: center;
}

.device-item__name {
  color: var(--text);
  font-weight: 500;
}

.device-item__type {
  font-size: 12px;
  color: var(--muted);
}

.device-item__remove {
  color: var(--muted);
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 16px; /* Adjust size as needed */
  padding: 0; /* Remove padding for a tighter fit */
}

.device-item__remove:hover {
  color: var(--text); /* Change color on hover */
}