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

:root {
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-card: #16213e;
  --accent: #00d9ff;
  --accent-hover: #00b8d4;
  --success: #00ff88;
  --danger: #ff4757;
  --warning: #ffa502;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --border: #2a2a4a;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

/* Utilities */
.hidden { display: none !important; }

/* Pages */
.page {
  min-height: 100vh;
}

/* Login/Register */
.login-container {
  max-width: 400px;
  margin: 0 auto;
  padding: 60px 20px;
  text-align: center;
}

.logo {
  font-size: 64px;
  margin-bottom: 20px;
}

.login-container h1 {
  font-size: 28px;
  margin-bottom: 8px;
}

.subtitle {
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.form-group {
  text-align: left;
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  margin-bottom: 4px;
  color: var(--text-secondary);
  font-size: 13px;
}

input[type="text"],
input[type="email"],
input[type="password"] {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 16px;
  transition: border-color 0.2s;
}

input:focus {
  outline: none;
  border-color: var(--accent);
}

.btn {
  padding: 14px 24px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #000;
  width: 100%;
}

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

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-success {
  background: var(--success);
  color: #000;
}

.register-link {
  margin-top: 24px;
  color: var(--text-secondary);
}

.register-link a {
  color: var(--accent);
  text-decoration: none;
}

.error {
  background: rgba(255, 71, 87, 0.1);
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 12px;
  border-radius: 8px;
  margin-top: 16px;
}

.success {
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid var(--success);
  color: var(--success);
  padding: 12px;
  border-radius: 8px;
  margin-top: 16px;
}

.claim-form {
  margin-top: 20px;
}

/* Header */
header {
  background: var(--bg-secondary);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-small {
  font-size: 28px;
}

header h1 {
  font-size: 20px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

#user-name {
  color: var(--text-secondary);
}

/* Main Content */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

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

.section-header h2 {
  font-size: 24px;
}

/* Device Cards */
#devices-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.device-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--border);
  transition: transform 0.2s, border-color 0.2s;
}

.device-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.device-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}

.device-name {
  font-size: 20px;
  font-weight: 600;
}

.device-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  padding: 4px 12px;
  border-radius: 20px;
}

.status-online {
  background: rgba(0, 255, 136, 0.15);
  color: var(--success);
}

.status-offline {
  background: rgba(255, 71, 87, 0.15);
  color: var(--danger);
}

.status-local {
  background: rgba(155, 89, 182, 0.2);
  color: #9b59b6;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.status-online .status-dot {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.device-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 24px;
}

.info-item {
  background: var(--bg-secondary);
  padding: 12px;
  border-radius: 8px;
}

.info-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.info-value {
  font-size: 16px;
  font-weight: 500;
}

.power-state {
  font-size: 18px;
}

.power-on { color: var(--success); }
.power-off { color: var(--danger); }

.device-actions {
  display: flex;
  gap: 12px;
}

.power-btn {
  flex: 1;
  padding: 16px;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
}

.power-btn-on {
  background: linear-gradient(135deg, #00ff88, #00d9ff);
  color: #000;
}

.power-btn-off {
  background: linear-gradient(135deg, #ff4757, #ff6b81);
  color: white;
}

.power-btn:hover {
  transform: scale(1.02);
}

.power-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.power-icon {
  font-size: 20px;
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
  overflow-y: auto;
}

.modal-content {
  background: var(--bg-card);
  border-radius: 16px;
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

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

.close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
}

.modal-body {
  padding: 16px 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-body ol {
  margin: 16px 0;
  padding-left: 20px;
}

.modal-body li {
  margin-bottom: 8px;
  color: var(--text-secondary);
}

#provision-code-container {
  text-align: center;
  margin-top: 24px;
}

.provision-code {
  font-size: 36px;
  font-weight: 700;
  font-family: monospace;
  letter-spacing: 8px;
  color: var(--accent);
  background: var(--bg-secondary);
  padding: 20px 32px;
  border-radius: 12px;
  margin-bottom: 12px;
}

.provision-timer {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* Loading */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-secondary);
}

/* No devices */
.no-devices {
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-card);
  border-radius: 16px;
  border: 2px dashed var(--border);
}

.no-devices-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.no-devices h3 {
  margin-bottom: 8px;
}

.no-devices p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* Device details */
.device-meta {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
}

.device-meta span {
  margin-right: 16px;
}

.device-footer {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
}

.device-footer .btn {
  flex: 1;
  padding: 10px 8px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: all 0.2s;
}

.device-footer .btn:hover {
  background: var(--bg-secondary);
  border-color: var(--accent);
  color: var(--text-primary);
}

.device-footer .btn-danger {
  border-color: rgba(255, 71, 87, 0.3);
}

.device-footer .btn-danger:hover {
  background: rgba(255, 71, 87, 0.1);
  border-color: var(--danger);
  color: var(--danger);
}

.device-footer .btn-accent {
  border-color: rgba(0, 217, 255, 0.3);
}

.device-footer .btn-accent:hover {
  background: rgba(0, 217, 255, 0.1);
  border-color: var(--accent);
  color: var(--accent);
}

.btn-danger {
  background: transparent;
  border: 1px solid var(--danger);
  color: var(--danger);
}

.btn-danger:hover {
  background: rgba(255, 71, 87, 0.1);
}

.btn-accent {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}

.btn-accent:hover {
  background: rgba(0, 217, 255, 0.1);
}

/* Form inputs for settings */
.form-input {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent);
}

.hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 6px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.modal-footer .btn-primary {
  flex: 1;
}

.modal-footer .btn-cancel {
  padding: 10px 20px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.modal-footer .btn-cancel:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

/* Notification Preferences */
.notify-checkboxes {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.notify-cb-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: var(--bg-card);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: background 0.2s;
}

.notify-cb-label:hover {
  background: var(--bg-hover);
}

.notify-cb-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.notify-actions {
  margin-left: auto;
  display: flex;
  gap: 10px;
  font-size: 0.8rem;
  font-weight: 400;
}

.notify-actions a {
  color: var(--accent);
  text-decoration: none;
  opacity: 0.7;
}

.notify-actions a:hover {
  opacity: 1;
}

.success {
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid var(--success);
  color: var(--success);
  padding: 12px;
  border-radius: 6px;
  margin-top: 15px;
  text-align: center;
}

/* Warning box для локального режима */
.warning-box {
  background: rgba(255, 165, 2, 0.1);
  border: 1px solid var(--warning);
  border-radius: 8px;
  padding: 15px;
  margin-top: 12px;
  text-align: left;
}

.warning-box strong {
  color: var(--warning);
}

.warning-box p {
  margin: 10px 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.warning-box ul {
  margin: 10px 0;
  padding-left: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}

.warning-box li {
  margin: 5px 0;
}

/* Карточка устройства в локальном режиме */
.device-local-mode {
  border: 2px solid #9b59b6;
  box-shadow: 0 0 20px rgba(155, 89, 182, 0.2);
}

.device-local-mode::before {
  content: "🏠 Локальный режим";
  display: block;
  background: linear-gradient(90deg, #9b59b6, #8e44ad);
  color: white;
  text-align: center;
  padding: 6px;
  margin: -24px -24px 15px -24px;
  border-radius: 12px 12px 0 0;
  font-size: 12px;
  font-weight: bold;
}

/* Responsive */
@media (max-width: 600px) {
  .device-info {
    grid-template-columns: 1fr;
  }
  
  .device-actions {
    flex-direction: column;
  }
  
  header {
    flex-direction: column;
    gap: 12px;
  }
  
  .section-header {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
}

/* Firmware table */
.fw-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: 10px;
  overflow: hidden;
}
.fw-table th, .fw-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.fw-table th {
  background: var(--bg-secondary);
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
}
.fw-table td { font-size: 0.9rem; }

/* Admin Badge */
.admin-badge {
  background: var(--danger);
  color: white;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  vertical-align: middle;
  margin-left: 8px;
}

/* Admin Tabs */
.admin-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 4px;
  overflow-x: auto;
}

.admin-tab {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.admin-tab:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.admin-tab.active {
  background: var(--accent);
  color: #000;
  font-weight: 600;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}

.stat-card-accent {
  border-color: var(--accent);
  background: rgba(0, 217, 255, 0.05);
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 4px;
}

.stat-card-accent .stat-value {
  color: var(--accent);
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Admin Tables */
.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: 10px;
  overflow: hidden;
}

.admin-table th, .admin-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.admin-table th {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.admin-table td {
  font-size: 0.85rem;
}

.admin-table tbody tr:hover {
  background: rgba(255,255,255,0.03);
}

.admin-actions {
  display: flex;
  gap: 6px;
  white-space: nowrap;
}

.admin-actions .btn-sm {
  padding: 4px 8px;
  font-size: 0.8rem;
}

.row-offline {
  opacity: 0.5;
}

.dot-online, .dot-offline {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 4px;
}
.dot-online { background: var(--success); }
.dot-offline { background: var(--danger); }

.admin-role {
  background: rgba(255, 71, 87, 0.15);
  color: var(--danger);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* Firmware picker combo */
.fw-picker-combo {
  position: relative;
}
.fw-picker-combo input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.95rem;
  box-sizing: border-box;
}
.fw-picker-combo input:focus {
  outline: none;
  border-color: var(--accent);
}
.fw-picker-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 200px;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 8px 8px;
  z-index: 1001;
  display: none;
}
.fw-picker-dropdown.open {
  display: block;
}
.fw-picker-item {
  padding: 8px 12px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--text);
}
.fw-picker-item:hover {
  background: rgba(0, 217, 255, 0.08);
}
.fw-picker-item.selected {
  background: rgba(0, 217, 255, 0.15);
  font-weight: 600;
}
.fw-picker-item .fw-meta {
  color: var(--text-secondary);
  font-size: 0.8rem;
}
.fw-picker-info {
  margin-top: 10px;
  padding: 8px 12px;
  background: rgba(0, 217, 255, 0.05);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  min-height: 20px;
}
.fw-current-badge {
  display: inline-block;
  background: rgba(0, 217, 255, 0.15);
  color: var(--accent);
  font-size: 0.7rem;
  padding: 1px 6px;
  border-radius: 4px;
  margin-left: 4px;
  font-weight: 600;
}

/* OTA status on device card */
.ota-status {
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.82rem;
  margin: 8px 0;
  text-align: center;
}
.ota-pending {
  background: rgba(255, 165, 0, 0.1);
  color: #ffa500;
}
.ota-sent {
  background: rgba(0, 217, 255, 0.1);
  color: var(--accent);
}
.ota-success {
  background: rgba(46, 213, 115, 0.1);
  color: var(--success);
}
.ota-failed {
  background: rgba(255, 71, 87, 0.1);
  color: var(--danger);
}

/* OTA badge in admin table */
.ota-badge {
  display: inline-block;
  font-size: 0.7rem;
  padding: 1px 5px;
  border-radius: 4px;
  margin-left: 4px;
}
.ota-badge-pending {
  background: rgba(255, 165, 0, 0.15);
  color: #ffa500;
}
.ota-badge-sent {
  background: rgba(0, 217, 255, 0.15);
  color: var(--accent);
}
.ota-badge-success {
  background: rgba(46, 213, 115, 0.15);
  color: var(--success);
}
.ota-badge-failed {
  background: rgba(255, 71, 87, 0.15);
  color: var(--danger);
}

/* Admin responsive */
@media (max-width: 600px) {
  .admin-tabs {
    flex-wrap: nowrap;
  }
  .admin-tab {
    padding: 8px 14px;
    font-size: 13px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .admin-table {
    font-size: 0.75rem;
  }
  .admin-table th, .admin-table td {
    padding: 6px 8px;
  }
}

/* ==================== SERIAL MONITOR ==================== */

.serial-modal-content {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 95%;
  max-width: 1100px;
  height: 85vh;
  background: #1a1a2e;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  z-index: 1001;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  border: 1px solid var(--border);
}

.serial-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.serial-title {
  font-weight: 600;
  color: #0f0;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 13px;
  white-space: nowrap;
}

.serial-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
  flex-shrink: 0;
}

.serial-filters {
  display: flex;
  gap: 2px;
}

.serial-download {
  display: flex;
  gap: 3px;
  align-items: center;
}

.serial-download input[type="date"] {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 4px;
  padding: 2px 4px;
  font-size: 0.7rem;
  width: 110px;
}

.log-filter {
  opacity: 0.4;
  font-size: 0.7rem;
  padding: 1px 6px;
  border: 1px solid var(--border);
  transition: opacity 0.2s;
}

.log-filter.active {
  opacity: 1;
}

.serial-autoscroll {
  font-size: 0.7rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 3px;
  cursor: pointer;
  white-space: nowrap;
}

.serial-controls .btn-sm {
  padding: 3px 8px;
  font-size: 0.7rem;
  white-space: nowrap;
}

.serial-output {
  flex: 1;
  margin: 0;
  padding: 12px 16px;
  overflow-y: auto;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 12px;
  line-height: 1.5;
  color: #0f0;
  background: #0a0a1a;
  white-space: pre-wrap;
  word-break: break-all;
  border-radius: 0 0 12px 12px;
}

.serial-output::-webkit-scrollbar {
  width: 8px;
}

.serial-output::-webkit-scrollbar-track {
  background: #0a0a1a;
}

.serial-output::-webkit-scrollbar-thumb {
  background: #333;
  border-radius: 4px;
}

.log-line { display: block; }
.log-E { color: #ff4444; }
.log-W { color: #ffaa00; }
.log-I { color: #44ff44; }
.log-D { color: #888888; }

#serial-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.7);
  z-index: 1000;
  backdrop-filter: blur(4px);
}