/* ECO-ESS Admin Dashboard — Dark theme, desktop-first */

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface-hover: #22263a;
  --border: #2e3344;
  --text: #e4e6ef;
  --text-muted: #8b8fa3;
  --accent: #50ab31;
  --accent-hover: #45952a;
  --accent-dim: rgba(80, 171, 49, 0.15);
  --success: #34d399;
  --error: #f87171;
  --error-dim: rgba(248, 113, 113, 0.15);
  --warning: #fbbf24;
  --warning-dim: rgba(251, 191, 36, 0.15);
  --info: #60a5fa;
  --info-dim: rgba(96, 165, 250, 0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --sidebar-w: 240px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

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

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

/* ── Login Page ────────────────────────────────────────── */

#page-login {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}

.login-container {
  width: 100%;
  max-width: 400px;
}

.login-header {
  text-align: center;
  margin-bottom: 24px;
}

.login-logo {
  height: 48px;
  margin-bottom: 12px;
}

.login-header h1 {
  color: var(--accent);
  font-size: 28px;
  font-weight: 700;
}

.login-header p {
  color: var(--text-muted);
  font-size: 14px;
}

.login-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 11px;
  color: var(--text-muted);
}

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

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 40;
  transition: transform 0.2s;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 16px;
  font-weight: 700;
  font-size: 15px;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
}

.sidebar-logo {
  height: 28px;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
  border: none;
  background: none;
  cursor: pointer;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background: var(--surface-hover);
  color: var(--text);
}

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

.nav-item svg { flex-shrink: 0; }

.nav-logout { color: var(--text-muted); }
.nav-logout:hover { color: var(--error); }

.sidebar-footer {
  padding: 12px 8px;
  border-top: 1px solid var(--border);
}

.sidebar-user {
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Mobile Header ─────────────────────────────────────── */

.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  z-index: 30;
}

.hamburger {
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 4px;
}

.mobile-title {
  font-weight: 700;
  font-size: 16px;
  color: var(--accent);
}

.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 35;
}

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

.main-content {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  padding: 32px;
}

#page-content {
  max-width: 1200px;
  margin: 0 auto;
}

/* ── Cards ─────────────────────────────────────────────── */

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

/* ── Stat Cards ────────────────────────────────────────── */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.stat-value--accent { color: var(--accent); }
.stat-value--success { color: var(--success); }
.stat-value--error { color: var(--error); }
.stat-value--warning { color: var(--warning); }
.stat-value--info { color: var(--info); }
.stat-value--muted { color: var(--text-muted); }

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 4px;
}

/* ── Charts ────────────────────────────────────────────── */

.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.chart-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px;
}

.chart-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}

.chart-wrap {
  position: relative;
  height: 220px;
}

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

.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead th {
  background: var(--surface);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1;
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.1s;
}

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

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

tbody tr.clickable { cursor: pointer; }

td {
  padding: 10px 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 240px;
}

td.wrap { white-space: normal; max-width: none; }

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

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.badge--green { background: rgba(52, 211, 153, 0.15); color: var(--success); }
.badge--red { background: var(--error-dim); color: var(--error); }
.badge--yellow { background: var(--warning-dim); color: var(--warning); }
.badge--blue { background: var(--info-dim); color: var(--info); }
.badge--purple { background: rgba(168, 85, 247, 0.15); color: #a855f7; }
.badge--cyan { background: rgba(34, 211, 238, 0.15); color: #22d3ee; }
.badge--grey { background: rgba(139, 143, 163, 0.15); color: var(--text-muted); }

/* ── Status Dots ───────────────────────────────────────── */

.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot--green { background: var(--success); box-shadow: 0 0 6px rgba(52, 211, 153, 0.5); }
.dot--red { background: var(--error); box-shadow: 0 0 6px rgba(248, 113, 113, 0.5); }
.dot--grey { background: #555; }

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

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: var(--font);
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: #555; }

.form-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.form-row .form-group { flex: 1; margin-bottom: 0; }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-danger { background: var(--error); color: #fff; }
.btn-danger:hover:not(:disabled) { background: #dc2626; }

.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-outline:hover:not(:disabled) { background: var(--surface-hover); color: var(--text); }

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

.btn-icon {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
}
.btn-icon:hover { color: var(--text); }

#login-form .btn { width: 100%; padding: 14px; }

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

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 16px;
}

.alert--error { background: var(--error-dim); color: var(--error); border: 1px solid rgba(248,113,113,0.3); }
.alert--success { background: var(--accent-dim); color: var(--accent); border: 1px solid rgba(80,171,49,0.3); }
.alert--info { background: var(--info-dim); color: var(--info); border: 1px solid rgba(96,165,250,0.3); }

/* ── Breadcrumbs ───────────────────────────────────────── */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.breadcrumb a:hover { color: var(--accent); }

.breadcrumb .sep { opacity: 0.4; }

.breadcrumb .current { color: var(--text); font-weight: 500; }

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

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  font-size: 13px;
  color: var(--text-muted);
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pagination button {
  padding: 6px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s;
}

.pagination button:hover:not(:disabled) { background: var(--surface-hover); }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Toolbar ───────────────────────────────────────────── */

.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.toolbar .search-input {
  flex: 1;
  min-width: 200px;
  padding: 9px 12px 9px 36px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.toolbar .search-input:focus { border-color: var(--accent); }
.toolbar .search-input::placeholder { color: #555; }

.search-wrap {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.search-wrap svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.toolbar select {
  padding: 9px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  outline: none;
}

/* ── Page Header ───────────────────────────────────────── */

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-title {
  font-size: 24px;
  font-weight: 700;
}

/* ── Detail Sections ───────────────────────────────────── */

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

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

.detail-label { color: var(--text-muted); }

.detail-value {
  font-weight: 500;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.detail-value--mono {
  font-family: var(--mono);
  font-size: 12px;
}

/* ── Power Readings (device detail) ────────────────────── */

.power-grid {
  display: flex;
  gap: 16px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
  justify-content: center;
  margin-bottom: 12px;
}

.power-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  flex: 1;
}

.power-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.power-num {
  font-size: 24px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.power-unit {
  font-size: 11px;
  color: var(--text-muted);
}

/* ── Toast Notifications ───────────────────────────────── */

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 100;
  pointer-events: none;
}

.toast {
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  pointer-events: auto;
  animation: toast-in 0.25s ease;
  max-width: 360px;
}

.toast--success { background: rgba(52, 211, 153, 0.95); color: #064e3b; }
.toast--error { background: rgba(248, 113, 113, 0.95); color: #450a0a; }
.toast--info { background: rgba(96, 165, 250, 0.95); color: #1e1b4b; }

.toast.fade-out { animation: toast-out 0.2s ease forwards; }

@keyframes toast-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toast-out { from { opacity: 1; } to { opacity: 0; transform: translateY(-10px); } }

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

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 24px;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  width: 100%;
  max-width: 480px;
  overflow: hidden;
}

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

.modal-header h3 { font-size: 16px; }

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 22px;
  cursor: pointer;
  padding: 0 4px;
}
.modal-close:hover { color: var(--text); }

#modal-body { padding: 20px; }

.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ── Loading / Spinner ─────────────────────────────────── */

.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-center {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 0;
}

/* ── Empty State ───────────────────────────────────────── */

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
  font-size: 14px;
}

.empty-state svg {
  margin-bottom: 12px;
  opacity: 0.3;
}

/* ── Section Dividers ──────────────────────────────────── */

.section-title {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* ── Health Indicators ─────────────────────────────────── */

.health-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  font-size: 13px;
}

/* ── Event Feed ────────────────────────────────────────── */

.event-feed {
  max-height: 400px;
  overflow-y: auto;
}

.event-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.event-item:last-child { border-bottom: none; }

.event-time {
  color: var(--text-muted);
  font-size: 11px;
  white-space: nowrap;
  min-width: 80px;
  font-variant-numeric: tabular-nums;
}

.event-body { flex: 1; }

.event-device {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
}

/* ── Misc ──────────────────────────────────────────────── */

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.mono { font-family: var(--mono); font-size: 12px; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 13px; }
.text-xs { font-size: 11px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.gap-8 { gap: 8px; }
.flex { display: flex; }
.items-center { align-items: center; }

.offline-muted { opacity: 0.4; }

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

@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-backdrop.show {
    display: block;
  }

  .mobile-header {
    display: flex;
  }

  .main-content {
    margin-left: 0;
    padding: 72px 16px 24px;
  }

  .charts-grid {
    grid-template-columns: 1fr;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar .search-wrap {
    min-width: auto;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .pagination {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
}