:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --sidebar-bg: #ffffff;
  --border: #e3e6ea;
  --border-strong: #d2d7de;
  --ink: #10182b;
  --muted: #5b6472;
  --dim: #8b93a1;
  --primary: #f6821f;
  --primary-hover: #dd6f11;
  --primary-ink: #2a1200;
  --primary-soft: #fef1e2;
  --success: #0e8a5f;
  --success-soft: #e5f6ef;
  --danger: #c8362b;
  --danger-soft: #fbeceb;
  --focus: #f6821f;
  --radius: 10px;
  --radius-sm: 7px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 43, 0.05);
  --shadow-md: 0 10px 30px rgba(16, 24, 43, 0.08);
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: 'SFMono-Regular', Consolas, 'IBM Plex Mono', monospace;
  --sidebar-w: 236px;
  --topbar-h: 60px;
}

* { box-sizing: border-box; }

html { min-width: 320px; background: var(--bg); }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p { margin-top: 0; }
.is-hidden { display: none !important; }

/* ---------- Shared: buttons, inputs, forms, status ---------- */

.primary-button, .ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.primary-button {
  padding: 11px 18px;
  border-radius: var(--radius-sm);
  color: #fff;
  background: var(--primary);
  box-shadow: 0 1px 2px rgba(221, 111, 17, 0.25);
}
.primary-button:hover { background: var(--primary-hover); }
.primary-button:active { transform: translateY(1px); }
.ghost-button {
  padding: 9px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--muted);
  background: #fff;
  font-size: 13px;
}
.ghost-button:hover { color: var(--ink); border-color: var(--dim); background: #fafbfc; }
button:disabled, a.ghost-button[aria-disabled='true'] { opacity: 0.55; cursor: not-allowed; pointer-events: none; }

label { display: grid; gap: 7px; color: var(--muted); font-size: 12px; font-weight: 600; }
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  outline: none;
  color: var(--ink);
  background: #fff;
  font: inherit;
}
input:focus, select:focus, textarea:focus { border-color: var(--focus); box-shadow: 0 0 0 3px var(--primary-soft); }
.auth-form { display: grid; gap: 16px; }
.inline-form { display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: end; }
.inline-form .primary-button { min-width: 170px; }
.form-status { min-height: 18px; margin: 14px 0 0; color: var(--success); font-size: 12.5px; font-weight: 600; }
.form-status[data-error='true'] { color: var(--danger); }
.is-copyable { cursor: pointer; transition: color 0.15s ease; }
.is-copyable:hover, .is-copyable:focus-visible { color: var(--primary); }
.is-copyable.is-copied { color: var(--success); }

/* ---------- App shell: sidebar + topbar + content ---------- */

.app-shell { display: flex; min-height: 100vh; }
.sidebar-backdrop { display: none; }

.sidebar {
  display: flex;
  flex-direction: column;
  flex: 0 0 var(--sidebar-w);
  width: var(--sidebar-w);
  padding: 20px 14px;
  border-right: 1px solid var(--border);
  background: var(--sidebar-bg);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sidebar-brand { display: inline-flex; align-items: center; gap: 10px; padding: 6px 10px 22px; color: var(--ink); text-decoration: none; font-weight: 800; font-size: 15px; letter-spacing: 0.02em; }
.brand-mark { width: 26px; height: 26px; }
.sidebar-nav { display: grid; gap: 2px; }
.nav-link {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--muted);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
}
.nav-link svg { width: 18px; height: 18px; flex: 0 0 18px; stroke: currentColor; stroke-width: 1.7; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.nav-link:hover { color: var(--ink); background: #f5f6f8; }
.nav-link.is-active { color: var(--primary-hover); background: var(--primary-soft); }

.main-col { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  height: var(--topbar-h);
  padding: 0 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 5;
}
.sidebar-toggle { display: none; padding: 6px; border: 0; background: none; color: var(--muted); cursor: pointer; }
.sidebar-toggle svg { width: 22px; height: 22px; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; }
.topbar-crumb { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; font-weight: 600; }
.topbar-crumb span { color: var(--ink); }
.topbar-crumb i { font-style: normal; color: var(--dim); }
.topbar-account { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.role-badge { padding: 3px 9px; border-radius: 999px; background: var(--primary-soft); color: var(--primary-hover); font-size: 10.5px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.account-name { color: var(--ink); font-size: 13px; font-weight: 700; }

.content { flex: 1 1 auto; padding: 32px 32px 80px; max-width: 980px; width: 100%; margin: 0 auto; }
.content-section { padding-top: 8px; margin-top: -8px; scroll-margin-top: calc(var(--topbar-h) + 16px); }
.content-section + .content-section { margin-top: 52px; }
.section-head { margin-bottom: 20px; }
.eyebrow { margin: 0 0 8px; color: var(--primary-hover); font-size: 11px; font-weight: 700; letter-spacing: 0.12em; }
.content-section h1 { font-size: 26px; font-weight: 800; letter-spacing: -0.01em; }
.content-section h2 { font-size: 20px; font-weight: 800; letter-spacing: -0.01em; }
.content-section h3 { font-size: 15px; font-weight: 700; }
.section-lede { max-width: 560px; margin-top: 8px; color: var(--muted); line-height: 1.6; }

.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 22px; }
.stat-tile { padding: 16px 18px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-sm); }
.stat-label { display: block; color: var(--muted); font-size: 11.5px; font-weight: 600; letter-spacing: 0.03em; }
.stat-value { display: block; margin-top: 6px; color: var(--ink); font-size: 26px; font-weight: 800; text-transform: capitalize; }

.panel { padding: 22px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-sm); }
.panel + .panel { margin-top: 14px; }
.panel-heading h2, .panel-heading h3 { margin-bottom: 6px; }
.panel-heading-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.panel-heading-actions { display: flex; align-items: center; gap: 12px; }
.panel-copy { max-width: 540px; margin: 0 0 20px; color: var(--muted); line-height: 1.65; font-size: 13px; }
.panel-copy-inline { margin-bottom: 0; }
.panel-copy code { padding: 1px 6px; border-radius: 4px; background: var(--bg); color: var(--dim); font-family: var(--mono); font-size: 12px; }
.pairing-panel .panel-heading { margin-bottom: 20px; }

.license-list { display: grid; gap: 0; }
.license-item { display: grid; grid-template-columns: minmax(84px, auto) auto auto; align-items: center; column-gap: 16px; padding: 14px 0; border-top: 1px solid var(--border); }
.license-item:first-child { border-top: 0; }
.license-id { overflow: hidden; color: var(--muted); font-family: var(--mono); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.license-metric { color: var(--success); font-size: 12.5px; font-weight: 700; white-space: nowrap; }
.license-detail { grid-column: 1 / 3; margin-top: 4px; color: var(--dim); font-size: 11.5px; }
.license-item > .license-remove { grid-column: 3; grid-row: 1 / span 2; color: var(--danger); }
.claim-license-form { display: grid; grid-template-columns: 1fr auto; gap: 14px; align-items: end; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--border); }

.device-list { display: grid; gap: 0; }
.device-row { display: grid; grid-template-columns: 1fr auto auto; gap: 18px; align-items: center; padding: 15px 0; border-top: 1px solid var(--border); }
.device-row:first-child { border-top: 0; }
.device-name { color: var(--ink); font-family: var(--mono); font-size: 12.5px; }
.device-meta { margin-top: 4px; color: var(--dim); font-size: 11.5px; }
.device-id-line { margin-top: 2px; color: var(--dim); font-size: 10.5px; opacity: 0.7; word-break: break-all; }
.device-state { padding: 3px 9px; border-radius: 999px; background: var(--success-soft); color: var(--success); font-size: 10.5px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }
.device-state.revoked { background: #f1f2f4; color: var(--dim); }

.download-button { width: fit-content; }
.download-options { display: flex; flex-wrap: wrap; gap: 10px; }
.pairing-license-field select { padding: 10px 12px; }
.control-device-field { max-width: 360px; margin-bottom: 18px; }
.control-mount { margin-top: 4px; }
.control-mount .ghost-button { margin-top: 12px; }
.admin-license-code { overflow-wrap: anywhere; padding: 12px 14px; border: 1px solid #bfe6d3; border-radius: var(--radius-sm); color: #0a6c48; background: var(--success-soft); font-family: var(--mono); font-size: 12px; }
.admin-action { margin-bottom: 14px; }
.admin-create-form { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
.admin-edit { padding-top: 2px; }
.admin-edit summary { color: var(--ink); font-size: 13px; font-weight: 700; cursor: pointer; list-style: none; }
.admin-edit summary::-webkit-details-marker { display: none; }
.admin-edit summary::before { content: '›'; display: inline-block; margin-right: 8px; color: var(--dim); transition: transform 0.15s ease; }
.admin-edit[open] summary::before { transform: rotate(90deg); }
.admin-edit[open] summary { margin-bottom: 16px; }
.admin-edit .panel-copy { margin-top: 4px; }
.admin-edit-form { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
.flags-editor { min-width: 250px; }
.flags-editor textarea, .admin-flags-form textarea { min-height: 126px; resize: vertical; font: 11px/1.45 var(--mono); }
.flags-help { margin: 14px 0 0; color: var(--dim); font-size: 11px; line-height: 1.55; }
.flags-help code { font-family: var(--mono); font-size: 10.5px; }
.admin-flag-summary { color: var(--dim); font-size: 11px; line-height: 1.45; }
.admin-flags-form { display: grid; grid-template-columns: minmax(220px, 1fr) auto; gap: 12px; align-items: end; }
.admin-flags-form .admin-flag-summary { grid-column: 1 / -1; margin: -4px 0 0; }

.admin-list-panel + .admin-list-panel { margin-top: 14px; }
.admin-key-list, .admin-account-list { display: grid; gap: 0; margin-top: 4px; }
.admin-key-row { display: grid; grid-template-columns: minmax(110px, auto) minmax(90px, auto) minmax(90px, auto) 1fr auto auto auto; gap: 14px; align-items: center; padding: 14px 0; border-top: 1px solid var(--border); }
.admin-key-row:first-child { border-top: 0; }
.admin-key-row-primary { display: flex; align-items: center; gap: 8px; min-width: 0; }
.admin-key-type-badge { flex: 0 0 auto; padding: 2px 7px; border-radius: 999px; background: #f1f2f4; color: var(--dim); font-size: 9.5px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }
.admin-key-account { color: var(--muted); font-size: 12px; font-weight: 600; white-space: nowrap; }
.admin-key-code { color: var(--dim); font-family: var(--mono); font-size: 11.5px; white-space: nowrap; }
.admin-key-expiry { color: var(--dim); font-size: 11.5px; white-space: nowrap; }
.admin-key-actions { display: flex; flex-wrap: wrap; gap: 8px; justify-self: end; }

.admin-account-card { border-top: 1px solid var(--border); padding: 14px 0; }
.admin-account-card:first-child { border-top: 0; }
.admin-account-card summary { display: flex; align-items: center; gap: 10px; cursor: pointer; list-style: none; color: var(--ink); font-size: 13px; font-weight: 700; }
.admin-account-card summary::-webkit-details-marker { display: none; }
.admin-account-card summary::before { content: '›'; color: var(--dim); transition: transform 0.15s ease; }
.admin-account-card[open] summary::before { transform: rotate(90deg); }
.admin-account-body { display: grid; gap: 14px; margin: 16px 0 0 16px; }
.admin-account-actions { display: flex; gap: 8px; }
.admin-password-form { grid-template-columns: minmax(160px, 260px) auto; margin: 0; }
.admin-account-subheading { margin: 0; color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.admin-account-licenses { display: grid; gap: 0; }
.admin-account-license-row { display: grid; grid-template-columns: minmax(100px, auto) 1fr auto; gap: 14px; align-items: center; padding: 10px 0; border-top: 1px solid var(--border); }
.admin-account-license-row:first-child { border-top: 0; }

/* ---------- Login page ---------- */

.login-body { background: var(--bg); }
.login-shell { display: flex; flex-direction: column; min-height: 100vh; }
.login-topbar { padding: 24px 28px; }
.login-topbar .sidebar-brand { padding: 0; }
.login-main { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 22px; padding: 24px; }
.login-card { width: 100%; max-width: 380px; padding: 28px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); box-shadow: var(--shadow-md); }
.auth-tabs { display: flex; gap: 22px; margin-bottom: 22px; border-bottom: 1px solid var(--border); }
.tab { padding: 0 0 12px; border: 0; border-bottom: 2px solid transparent; margin-bottom: -1px; color: var(--muted); background: transparent; font: inherit; font-weight: 700; font-size: 13.5px; cursor: pointer; }
.tab.is-active { color: var(--primary-hover); border-color: var(--primary); }
.login-card .primary-button { width: 100%; margin-top: 4px; }
.login-footnote { max-width: 360px; margin: 0; color: var(--dim); font-size: 11.5px; line-height: 1.6; text-align: center; }

/* ---------- Pairing page ---------- */

.pair-title { margin: 0 0 6px; font-size: 18px; font-weight: 700; }
.pair-lede { margin: 0 0 18px; color: var(--muted); font-size: 13px; line-height: 1.5; }
.pair-form { display: grid; gap: 14px; }
.pair-form label { display: grid; gap: 5px; color: var(--muted); font-size: 12px; font-weight: 600; }
.pair-form input, .pair-form select { width: 100%; padding: 10px 12px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); font: inherit; font-size: 14px; background: var(--surface); color: var(--ink); }
.pair-form input:focus, .pair-form select:focus { border-color: var(--focus); outline: 0; }
.pair-form .primary-button { width: 100%; margin-top: 4px; }
.login-footnote a { color: var(--primary-hover); }
.confirmation-card { margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--border); }
.confirmation-kicker { margin-bottom: 5px; color: var(--primary-hover); font-size: 10px; font-weight: 800; letter-spacing: .1em; }
.confirmation-card h2 { margin-bottom: 8px; font-size: 16px; }
.confirmation-copy { margin-bottom: 14px; color: var(--muted); font-size: 12.5px; line-height: 1.6; }
.preview-facts { display: grid; grid-template-columns: minmax(120px, auto) 1fr; gap: 6px 14px; margin: 0; }
.preview-facts dt { color: var(--dim); font-size: 11px; font-weight: 700; }
.preview-facts dd { margin: 0; color: var(--ink); font-size: 12px; font-weight: 600; overflow-wrap: anywhere; }
.flag-summary { display: grid; gap: 10px; }
.flag-summary-section { padding: 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: #fafbfc; }
.flag-summary-section h3 { margin: 0 0 6px; color: var(--muted); font-size: 11px; letter-spacing: .04em; text-transform: uppercase; }
.flag-summary-section pre { max-height: 150px; margin: 0; overflow: auto; color: var(--ink); font: 11px/1.45 var(--mono); white-space: pre-wrap; word-break: break-word; }
.confirmation-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 16px; }

/* ---------- Responsive ---------- */

@media (max-width: 920px) {
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 20;
    transform: translateX(-100%);
    box-shadow: var(--shadow-md);
    transition: transform 0.2s ease;
  }
  .sidebar.is-open { transform: translateX(0); }
  .sidebar-toggle { display: inline-flex; }
  .content { padding: 24px 18px 64px; }
  .sidebar-backdrop { display: block; position: fixed; inset: 0; z-index: 19; background: rgba(15, 23, 42, 0.32); opacity: 0; pointer-events: none; transition: opacity 0.2s ease; }
  .sidebar.is-open ~ .sidebar-backdrop { opacity: 1; pointer-events: auto; }
}

@media (max-width: 640px) {
  .stat-grid { grid-template-columns: 1fr; }
  .inline-form, .claim-license-form, .admin-create-form, .admin-edit-form { grid-template-columns: 1fr; }
  .inline-form .primary-button { width: 100%; }
  .license-item { grid-template-columns: 1fr auto; }
  .license-metric { grid-column: 1 / 2; }
  .license-detail { grid-column: 1 / 3; }
  .license-item > .license-remove { grid-row: 1 / span 3; }
  .device-row { grid-template-columns: 1fr auto; }
  .device-row .ghost-button { grid-column: 2; grid-row: 1 / span 2; }
  .topbar { padding: 0 16px; }
  .topbar-crumb span:not(:first-child) { display: none; }
  .admin-key-row { grid-template-columns: 1fr; }
  .admin-key-actions { justify-self: start; }
  .admin-account-license-row { grid-template-columns: 1fr; }
  .admin-password-form { grid-template-columns: 1fr; }
  .admin-flags-form { grid-template-columns: 1fr; }
}