*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-family);
  font-size: var(--font-base);
  color: var(--text-primary);
  background: var(--surface-bg);
  min-height: 100vh;
  line-height: 1.6;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }

/* ── App Layout ──────────────────────────────────────────────────────────── */

.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */

.sidebar {
  width: var(--sidebar-width);
  background: var(--surface-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: width var(--transition);
  overflow: hidden;
}

.sidebar.collapsed {
  width: var(--sidebar-width-collapsed);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px;
  height: var(--topbar-height);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  flex-shrink: 0;
  overflow: hidden;
}

.brand-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-name {
  font-weight: 700;
  font-size: var(--font-md);
  color: #fff;
  white-space: nowrap;
  transition: opacity var(--transition);
}

.sidebar.collapsed .brand-name { opacity: 0; pointer-events: none; }

/* Nav */
.nav-list {
  flex: 1;
  list-style: none;
  padding: 12px 8px;
  overflow-y: auto;
  overflow-x: hidden;
}

.nav-item { margin-bottom: 2px; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-sm);
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-link:hover {
  background: rgba(255,255,255,0.06);
  color: var(--text-primary);
}

.nav-item.active .nav-link {
  background: var(--color-primary-muted);
  color: var(--color-primary);
}

.nav-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  stroke-width: 2;
}

.nav-label {
  transition: opacity var(--transition);
  overflow: hidden;
}

.sidebar.collapsed .nav-label { opacity: 0; pointer-events: none; }

/* Sidebar footer */
.sidebar-footer {
  padding: 8px;
  border-top: 1px solid rgba(255,255,255,0.06);
  flex-shrink: 0;
}

.collapse-toggle .nav-icon {
  transition: transform var(--transition);
}

.sidebar.collapsed .collapse-toggle .nav-icon {
  transform: rotate(180deg);
}

/* ── Main wrap ───────────────────────────────────────────────────────────── */

.main-wrap {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition);
}

.main-wrap.sidebar-collapsed {
  margin-left: var(--sidebar-width-collapsed);
}

/* ── Topbar ──────────────────────────────────────────────────────────────── */

.topbar {
  height: var(--topbar-height);
  background: var(--surface-topbar);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
  flex-shrink: 0;
}

.topbar-title {
  font-size: var(--font-md);
  font-weight: 700;
  flex: 1;
  color: var(--text-primary);
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-name {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

.topbar-logout,
.theme-toggle,
.mobile-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  text-decoration: none;
}

.topbar-logout:hover,
.theme-toggle:hover,
.mobile-toggle:hover {
  color: var(--text-primary);
  background: var(--surface-hover);
}

.topbar-logout svg,
.theme-toggle svg,
.mobile-toggle svg {
  width: 18px;
  height: 18px;
}

.mobile-toggle { display: none; }

/* Theme toggle icon visibility */
[data-theme="dark"] .icon-sun  { display: block; }
[data-theme="dark"] .icon-moon { display: none;  }
[data-theme="light"] .icon-sun  { display: none;  }
[data-theme="light"] .icon-moon { display: block; }

/* ── Content ─────────────────────────────────────────────────────────────── */

.content {
  flex: 1;
  padding: 28px 32px;
  max-width: 1400px;
  width: 100%;
}

/* ── Alerts ──────────────────────────────────────────────────────────────── */

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  font-weight: 500;
  margin: 0 32px 0;
  border-left: 4px solid;
}

.alert-info    { background: var(--color-info-muted);    border-color: var(--color-info);    color: var(--color-info);    }
.alert-danger  { background: var(--color-danger-muted);  border-color: var(--color-danger);  color: var(--color-danger);  }
.alert-success { background: var(--color-success-muted); border-color: var(--color-success); color: var(--color-success); }
.alert-warning { background: var(--color-warning-muted); border-color: var(--color-warning); color: var(--color-warning); }

/* ── Stat cards ──────────────────────────────────────────────────────────── */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  border-left: 4px solid var(--accent);
  position: relative;
  overflow: hidden;
}

.stat-card[data-accent="teal"]   { --accent: var(--color-primary); }
.stat-card[data-accent="green"]  { --accent: var(--color-success); }
.stat-card[data-accent="purple"] { --accent: var(--color-purple);  }
.stat-card[data-accent="blue"]   { --accent: var(--color-info);    }
.stat-card[data-accent="orange"] { --accent: var(--color-warning); }

.stat-label {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-sub {
  font-size: var(--font-sm);
  color: var(--text-muted);
}

.stat-icon {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  opacity: 0.12;
  color: var(--accent);
}

/* ── Card ────────────────────────────────────────────────────────────────── */

.card {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  gap: 12px;
}

.card-title {
  font-size: var(--font-md);
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title svg { width: 18px; height: 18px; color: var(--color-primary); }

.card-body { padding: 20px; }

/* ── Tables ──────────────────────────────────────────────────────────────── */

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-sm);
}

th {
  padding: 10px 12px;
  text-align: left;
  font-weight: 700;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
}

td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
  vertical-align: middle;
}

tr:last-child td { border-bottom: none; }

tr:hover td { background: var(--surface-hover); }

/* ── Badges / Status ─────────────────────────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-online  { background: var(--color-success-muted); color: var(--color-success); }
.badge-offline { background: var(--surface-hover);        color: var(--text-muted);    }
.badge-admin   { background: var(--color-purple-muted);   color: var(--color-purple);  }
.badge-active  { background: var(--color-success-muted);  color: var(--color-success); }
.badge-inactive{ background: var(--color-danger-muted);   color: var(--color-danger);  }
.badge-info    { background: var(--color-info-muted);     color: var(--color-info);    }

.dot {
  width: 7px; height: 7px; border-radius: 50%; display: inline-block; flex-shrink: 0;
}
.dot-green  { background: var(--color-success); box-shadow: 0 0 5px var(--color-success); }
.dot-grey   { background: var(--text-muted); }
.dot-orange { background: var(--color-warning); }

/* ── Buttons ─────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: var(--font-sm);
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn svg { width: 15px; height: 15px; }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }

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

.btn-danger {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}
.btn-danger:hover { background: #c53030; }

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

.btn-sm { padding: 4px 10px; font-size: 0.7rem; }

.btn-icon {
  padding: 6px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  display: inline-flex;
}
.btn-icon:hover { color: var(--text-primary); background: var(--surface-hover); }
.btn-icon svg { width: 16px; height: 16px; }
.btn-icon.danger:hover { color: var(--color-danger); }

/* ── Forms ───────────────────────────────────────────────────────────────── */

.form-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  min-width: 180px;
}

label {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

input[type="text"],
input[type="password"],
input[type="email"],
select,
textarea {
  background: var(--surface-input);
  border: 1px solid var(--border-input);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: var(--font-sm);
  padding: 8px 12px;
  transition: border-color var(--transition);
  width: 100%;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-muted);
}

.form-check {
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-check label { margin: 0; font-weight: 500; cursor: pointer; }

/* ── Pagination ──────────────────────────────────────────────────────────── */

.pagination {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  font-size: var(--font-sm);
  color: var(--text-muted);
}

.pagination .page-info { flex: 1; }

.page-btn {
  padding: 5px 10px;
  background: var(--surface-input);
  border: 1px solid var(--border-input);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: var(--font-sm);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
}

.page-btn:hover { background: var(--color-primary-muted); border-color: var(--color-primary); color: var(--color-primary); }
.page-btn.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.page-btn[disabled], .page-btn.disabled { opacity: 0.4; pointer-events: none; }

/* ── Code blocks / key display ───────────────────────────────────────────── */

.code-block {
  background: var(--surface-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-family: 'Courier New', monospace;
  font-size: var(--font-sm);
  color: var(--color-primary);
  word-break: break-all;
  position: relative;
}

.copy-wrap {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.copy-wrap .code-block { flex: 1; }

.copy-btn {
  flex-shrink: 0;
  padding: 8px;
  background: var(--surface-input);
  border: 1px solid var(--border-input);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
}
.copy-btn:hover { background: var(--color-primary-muted); color: var(--color-primary); }
.copy-btn svg { width: 16px; height: 16px; }

/* ── Info rows (server info etc) ─────────────────────────────────────────── */

.info-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.info-row:last-child { border-bottom: none; }

.info-label {
  font-size: var(--font-sm);
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  min-width: 150px;
  padding-top: 2px;
}

.info-value { flex: 1; color: var(--text-primary); font-size: var(--font-sm); }

/* ── Modal ───────────────────────────────────────────────────────────────── */

.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-backdrop.open { display: flex; }

.modal {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-color);
}

.modal-title { font-weight: 700; font-size: var(--font-md); }

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: color var(--transition);
  display: flex;
}

.modal-close:hover { color: var(--text-primary); }
.modal-close svg { width: 20px; height: 20px; }

.modal-body { padding: 22px; }
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 22px;
  border-top: 1px solid var(--border-color);
}

/* ── Login page ──────────────────────────────────────────────────────────── */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-bg);
  padding: 20px;
}

.login-card {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 44px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.25);
}

.login-brand {
  text-align: center;
  margin-bottom: 32px;
}

.login-brand img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  margin-bottom: 12px;
}

.login-brand h1 {
  font-size: var(--font-xl);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.login-brand p {
  font-size: var(--font-sm);
  color: var(--text-muted);
  margin-top: 4px;
}

.login-form .form-group { margin-bottom: 18px; }

.login-form .btn { width: 100%; justify-content: center; padding: 10px; margin-top: 8px; }

.login-error {
  background: var(--color-danger-muted);
  border: 1px solid var(--color-danger);
  border-radius: var(--radius-sm);
  color: var(--color-danger);
  font-size: var(--font-sm);
  padding: 10px 14px;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Section header ──────────────────────────────────────────────────────── */

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 12px;
}

.section-header h2 {
  font-size: var(--font-lg);
  font-weight: 700;
}

/* ── Empty state ─────────────────────────────────────────────────────────── */

.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}

.empty-state svg {
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
  opacity: 0.4;
}

.empty-state p { font-size: var(--font-sm); margin-top: 4px; }

/* ── OS icon abbreviations ───────────────────────────────────────────────── */

.os-tag {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--surface-raised);
  color: var(--text-muted);
  text-transform: uppercase;
}

.os-windows { background: #1a6dbf22; color: #4da6ff; }
.os-linux   { background: #e8a00022; color: #e8a000; }
.os-mac     { background: #88888822; color: var(--text-muted); }
.os-unknown { background: var(--surface-raised); color: var(--text-muted); }

/* ── Responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition), width var(--transition);
  }

  .sidebar.mobile-open {
    transform: translateX(0);
    width: var(--sidebar-width);
  }

  .main-wrap,
  .main-wrap.sidebar-collapsed {
    margin-left: 0;
  }

  .mobile-toggle { display: flex; }

  .content { padding: 20px 16px; }

  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr; }
  .login-card { padding: 28px 24px; }
}