/* ─── Auth Screen ────────────────────────────────────────── */
#auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--color-black);
  position: relative;
  overflow: hidden;
}

.auth-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

#auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--color-black);
  position: relative;
  overflow: hidden;
}

.auth-bg-pattern {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 25% 25%, rgba(251, 191, 36, 0.03) 0%, transparent 50%),
                    radial-gradient(circle at 75% 75%, rgba(251, 191, 36, 0.02) 0%, transparent 50%);
  pointer-events: none;
}

.auth-container {
  width: 100%;
  max-width: 440px;
  padding: var(--space-4);
  position: relative;
  z-index: 1;
}

.auth-card {
  padding: var(--space-10) var(--space-8);
}

.auth-brand {
  text-align: center;
  margin-bottom: var(--space-8);
}

.auth-brand h1 {
  font-size: var(--text-3xl);
  font-weight: 900;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.auth-form .btn {
  width: 100%;
  margin-top: var(--space-2);
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin: var(--space-4) 0;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.auth-switch {
  text-align: center;
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.auth-switch button {
  color: var(--color-gold);
  font-weight: 600;
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.auth-switch button:hover {
  color: var(--color-gold-light);
}

.auth-error {
  padding: var(--space-3) var(--space-4);
  background: var(--color-red-bg);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-lg);
  color: var(--color-red);
  font-size: var(--text-sm);
  display: none;
}

.auth-error.show {
  display: block;
}

.auth-success {
  padding: var(--space-3) var(--space-4);
  background: var(--color-green-bg);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-lg);
  color: var(--color-green);
  font-size: var(--text-sm);
  display: none;
}

.auth-success.show {
  display: block;
}

/* ─── Sidebar ────────────────────────────────────────────── */
.sidebar {
  width: 240px;
  height: 100vh;
  background: var(--color-darker);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: var(--z-sidebar);
  transition: width var(--transition-base);
}

.sidebar-brand {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.sidebar-brand .brand-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: var(--text-sm);
  color: var(--color-black);
  flex-shrink: 0;
}

.sidebar-brand h2 {
  font-size: var(--text-base);
  font-weight: 800;
  letter-spacing: 0.03em;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  overflow-y: auto;
}

.sidebar-section-label {
  padding: var(--space-3) var(--space-3) var(--space-1);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.625rem var(--space-3);
  border-radius: var(--radius-lg);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-white);
}

.nav-item.active {
  background: rgba(251, 191, 36, 0.1);
  color: var(--color-gold);
}

.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.nav-item .nav-badge {
  margin-left: auto;
  font-size: 0.65rem;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full);
  background: rgba(251, 191, 36, 0.15);
  color: var(--color-gold);
  font-weight: 600;
}

.sidebar-footer {
  padding: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.user-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.user-info:hover {
  background: rgba(255, 255, 255, 0.05);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-black);
  flex-shrink: 0;
}

.user-details {
  flex: 1;
  min-width: 0;
}

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

.user-details .email {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  truncate: true;
}

/* ─── Top Bar ────────────────────────────────────────────── */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-8);
  border-bottom: 1px solid var(--color-border);
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: var(--z-header);
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.top-bar-left h1 {
  font-size: var(--text-xl);
  font-weight: 700;
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.device-selector {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: rgba(39, 39, 42, 0.5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.device-selector:hover {
  background: rgba(39, 39, 42, 0.8);
  border-color: rgba(151, 151, 151, 0.4);
}

.device-selector .device-name {
  color: var(--color-white);
  font-weight: 600;
}

/* Device Dropdown List */
.device-list {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 300px;
  max-width: 360px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  display: none;
  z-index: 100;
  overflow: hidden;
}
.device-list.active { display: block; }
.device-list-header {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
}
.device-list-items {
  max-height: 240px;
  overflow-y: auto;
}
.device-list-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  text-align: left;
  transition: background 0.15s;
}
.device-list-item:hover { background: var(--color-card-hover); }
.device-list-item.active { background: var(--color-card); }
.device-list-info { flex: 1; min-width: 0; }
.device-list-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-white);
}
.device-list-id {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}
.device-list-status {
  font-size: var(--text-xs);
  font-weight: 500;
}
.device-list-status.online-text { color: var(--color-green); }
.device-list-status.offline-text { color: var(--color-text-muted); }
.device-list-empty { padding: var(--space-4); }

/* ─── Dashboard Stats ────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  padding: var(--space-5);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  transition: all var(--transition-base);
}

.stat-card:hover {
  border-color: rgba(251, 191, 36, 0.2);
  background: var(--color-card-hover);
}

.stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.stat-icon.gold { background: rgba(251, 191, 36, 0.15); color: var(--color-gold); }
.stat-icon.green { background: var(--color-green-bg); color: var(--color-green); }
.stat-icon.blue { background: var(--color-blue-bg); color: var(--color-blue); }
.stat-icon.purple { background: var(--color-purple-bg); color: var(--color-purple); }
.stat-icon.orange { background: var(--color-orange-bg); color: var(--color-orange); }
.stat-icon.red { background: var(--color-red-bg); color: var(--color-red); }

.stat-info {
  flex: 1;
  min-width: 0;
}

.stat-value {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.stat-trend {
  font-size: 0.65rem;
  font-weight: 600;
  margin-top: var(--space-1);
}

.stat-trend.up { color: var(--color-green); }
.stat-trend.down { color: var(--color-red); }

/* ─── Device Cards ───────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

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

.section-header .see-all {
  font-size: var(--text-sm);
  color: var(--color-gold);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.section-header .see-all:hover {
  color: var(--color-gold-light);
}

.devices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-4);
}

.device-card {
  padding: var(--space-5);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-base);
}

.device-card:hover {
  border-color: rgba(251, 191, 36, 0.3);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
  background: var(--color-card-hover);
}

.device-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.device-card-name {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--color-white);
  font-size: var(--text-base);
}

.device-card-id {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.device-card-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-light);
}

.device-stat-item {
  text-align: center;
}

.device-stat-value {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-white);
}

.device-stat-label {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.device-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-light);
}

.device-last-seen {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ─── Feature Grid ───────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}

.feature-card {
  padding: var(--space-5);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.feature-card:hover {
  border-color: rgba(251, 191, 36, 0.3);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

.feature-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.feature-card-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-white);
}

.feature-card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
  flex: 1;
}

.feature-card-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ─── Activity Feed ──────────────────────────────────────── */
.activity-feed {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.activity-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.activity-item:hover {
  background: var(--color-card-hover);
}

.activity-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.activity-content {
  flex: 1;
  min-width: 0;
}

.activity-title {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

.activity-desc {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.activity-time {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 4px;
}

/* ─── Quick Actions ──────────────────────────────────────── */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-3);
}

.quick-action {
  padding: var(--space-4);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  transition: all var(--transition-base);
}

.quick-action:hover {
  border-color: rgba(251, 191, 36, 0.3);
  background: var(--color-card-hover);
  transform: translateY(-1px);
}

.quick-action-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.quick-action-text {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-white);
}

/* ─── Toast Notifications ────────────────────────────────── */
.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(16px);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  pointer-events: auto;
  animation: toastIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  max-width: 400px;
}

.toast.removing {
  animation: toastOut 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.toast-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* ─── Modal ──────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  backdrop-filter: blur(4px);
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  max-width: 480px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  animation: scaleIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
  font-size: var(--text-lg);
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-white);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
}

/* ─── Settings Page ──────────────────────────────────────── */
.settings-section {
  margin-bottom: var(--space-8);
}

.settings-section-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.settings-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-3);
  transition: all var(--transition-fast);
}

.settings-item:hover {
  border-color: rgba(151, 151, 151, 0.3);
}

.settings-item-info h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-1);
}

.settings-item-info p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* Toggle Switch */
.toggle {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: rgba(39, 39, 42, 0.8);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: var(--color-white);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.toggle input:checked + .toggle-slider {
  background: var(--color-gold);
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(20px);
  background: var(--color-black);
}

/* ─── Activity Detail Pages ──────────────────────────────── */
.detail-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.detail-header .back-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.detail-header .back-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-white);
}

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

.data-table th {
  text-align: left;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
}

.data-table td {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-light);
}

.data-table tr:hover td {
  color: var(--color-text);
}