@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --bg-sidebar: #14161F;
  --bg-sidebar-hover: #1E212D;
  --bg-app: #F5F6F8;
  --surface: #FFFFFF;
  --border: #E5E7EB;
  --border-soft: #EEF0F3;

  --text-primary: #14161F;
  --text-secondary: #5A5F70;
  --text-muted: #9298A8;
  --text-inverse: #F2F3F7;
  --text-inverse-muted: #8B90A3;

  --accent: #5451F0;
  --accent-hover: #4340D6;
  --accent-soft: #EEEDFE;

  --success: #17A461;
  --success-soft: #E7F7EF;
  --danger: #E0393F;
  --danger-soft: #FCEAEA;
  --warning: #C77D12;
  --warning-soft: #FBF1E1;

  --radius: 10px;
  --radius-sm: 7px;
  --font-ui: 'Inter', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font-ui);
  background: var(--bg-app);
  color: var(--text-primary);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

button, input, select {
  font-family: inherit;
  font-size: inherit;
}

/* ==================== SHELL ==================== */

.app-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

/* ==================== SIDEBAR ==================== */

.sidebar {
  background: var(--bg-sidebar);
  color: var(--text-inverse);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 8px 28px;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
  color: white;
  flex-shrink: 0;
}

.brand-name {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
}

.brand-suffix {
  color: var(--text-inverse-muted);
  font-weight: 500;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  color: var(--text-inverse-muted);
  font-weight: 500;
  font-size: 13.5px;
  text-align: left;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
}

.nav-item:hover {
  background: var(--bg-sidebar-hover);
  color: var(--text-inverse);
}

.nav-item.is-active {
  background: var(--accent-soft);
  color: var(--accent);
}

.nav-icon {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}

.sidebar-org {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 16px 12px 12px;
  margin-top: 12px;
}

.org-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-inverse-muted);
  margin-bottom: 4px;
}

.org-name {
  font-weight: 600;
  font-size: 13.5px;
  color: var(--text-inverse);
}

.org-plan {
  font-size: 12px;
  color: var(--text-inverse-muted);
  margin-top: 2px;
}

.logout-btn {
  margin: 12px 12px 0;
  padding: 9px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  color: var(--text-inverse-muted);
  cursor: pointer;
  font-weight: 500;
  font-size: 12.5px;
  transition: border-color 0.12s ease, color 0.12s ease;
}

.logout-btn:hover {
  border-color: rgba(255,255,255,0.3);
  color: var(--text-inverse);
}

/* ==================== MAIN ==================== */

.main {
  padding: 32px 40px 60px;
  max-width: 1160px;
}

.view { display: none; }
.view.is-active { display: block; animation: fadeIn 0.18s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.view-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
}

.view-header h1 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}

.view-subtitle {
  color: var(--text-secondary);
  margin: 0;
  font-size: 13.5px;
}

/* ==================== BUTTONS ==================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-primary:hover { background: var(--accent-hover); }

.btn-block { width: 100%; margin-top: 6px; }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text-secondary);
}
.btn-ghost:hover { border-color: var(--text-muted); color: var(--text-primary); }

.btn-danger-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--danger);
}
.btn-danger-ghost:hover { background: var(--danger-soft); border-color: var(--danger); }

.btn-sm { padding: 6px 11px; font-size: 12px; }

/* ==================== TOOLBAR ==================== */

.toolbar {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.search-input, .filter-select, .text-input {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  background: var(--surface);
  color: var(--text-primary);
  outline: none;
}

.search-input { flex: 1; max-width: 320px; }
.search-input:focus, .filter-select:focus, .text-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ==================== TABLE ==================== */

.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  text-align: left;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 600;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: #FAFAFB;
}

.data-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 13.5px;
  vertical-align: middle;
}

.data-table tr:last-child td { border-bottom: none; }
.col-actions { text-align: right; }

.device-id-mono {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 7px;
  position: relative;
}
.status-dot.online { background: var(--success); }
.status-dot.online::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1.5px solid var(--success);
  opacity: 0.5;
  animation: pulse 2s ease-out infinite;
}
.status-dot.offline { background: var(--text-muted); }
.status-dot.blocked { background: var(--danger); }

@keyframes pulse {
  from { transform: scale(0.6); opacity: 0.6; }
  to { transform: scale(1.6); opacity: 0; }
}

.status-label { font-size: 12.5px; color: var(--text-secondary); }

.empty-row td { padding: 48px 16px; }
.empty-state { text-align: center; }
.empty-state-title { font-weight: 600; margin-bottom: 4px; }
.empty-state-text { color: var(--text-muted); font-size: 13px; }

/* ==================== POLICIES ==================== */

.policy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.policy-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.policy-card h3 {
  margin: 0 0 4px;
  font-size: 14.5px;
}

.policy-card-count {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.policy-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.policy-tag {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 20px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 500;
}

/* ==================== PROVISIONING ==================== */

.provisioning-panel {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 20px;
  margin-bottom: 24px;
}

.provisioning-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 10px;
}

.qr-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.qr-placeholder {
  text-align: center;
  color: var(--text-muted);
}
.qr-placeholder svg { margin-bottom: 10px; opacity: 0.5; }
.qr-placeholder p { font-size: 12px; margin: 0; }

.provisioning-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.step {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-secondary);
}

.step-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ==================== SETTINGS ==================== */

.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.settings-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.settings-card h3 { margin: 0 0 12px; font-size: 14px; }

.settings-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-soft);
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0;
}
.settings-row:last-child { border-bottom: none; }

@media (max-width: 860px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; }
  .provisioning-panel { grid-template-columns: 1fr; }
  .settings-grid { grid-template-columns: 1fr; }
}

/* ==================== DASHBOARD ==================== */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

.stat-success { color: var(--success); }
.stat-muted { color: var(--text-muted); }

.dash-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.dash-panel h3 { margin: 0 0 12px; font-size: 14px; }

.activity-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.activity-item {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-soft);
}
.activity-item:last-child { border-bottom: none; }
.activity-time { color: var(--text-muted); font-family: var(--font-mono); font-size: 11.5px; }

/* ==================== SUBTABS (Management) ==================== */

.subtabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 18px;
}

.subtab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 10px 4px;
  margin-right: 20px;
  font-weight: 600;
  font-size: 13.5px;
  color: var(--text-muted);
  cursor: pointer;
}

.subtab:hover { color: var(--text-primary); }

.subtab.is-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.subview { display: none; }
.subview.is-active { display: block; animation: fadeIn 0.15s ease; }