/* Dragon-DMR Server - Dragon Theme
 * Author: SQ9LM Łukasz <sq9lm@dragon-net.pl>
 * (c) 2019-2026 Dragon-Net.pl
 */

/**
 * DRAGON Network HBmonitor Theme
 * Modern Dark Theme with Dragon-Net Branding
 * Optimized for Raspberry Pi 4
 *
 * Color Palette from dragon-net.pl:
 * - Primary Red: #C72127 -> #9C1519 (gradient)
 * - Accent Green: #009051 (HBlink logo)
 * - Accent Orange: #FF9300 (link text)
 * - Dark backgrounds for modern look
 */

/* ============================================
   CSS VARIABLES - DESIGN TOKENS
   ============================================ */
:root {
  /* Dragon-Net Brand Colors */
  --dn-red-primary: #c72127;
  --dn-red-dark: #9c1519;
  --dn-red-light: #e63946;
  --dn-green: #009051;
  --dn-green-light: #00b864;
  --dn-orange: #ff9300;
  --dn-orange-light: #ffb347;

  /* Dark Theme Backgrounds */
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-elevated: #30363d;
  --bg-hover: #3d444d;

  /* Text Colors */
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --text-link: #58a6ff;

  /* Status Colors */
  --status-online: #3fb950;
  --status-offline: #f85149;
  --status-warning: #d29922;
  --status-info: #58a6ff;

  /* Gradients */
  --gradient-dragon: linear-gradient(
    135deg,
    var(--dn-red-primary) 0%,
    var(--dn-red-dark) 100%
  );
  --gradient-header: linear-gradient(
    180deg,
    var(--dn-red-primary) 0%,
    var(--dn-red-dark) 100%
  );
  --gradient-card: linear-gradient(
    145deg,
    var(--bg-secondary) 0%,
    var(--bg-tertiary) 100%
  );
  --gradient-glass: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1) 0%,
    rgba(255, 255, 255, 0.05) 100%
  );

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  --shadow-glow-red: 0 0 20px rgba(199, 33, 39, 0.4);
  --shadow-glow-green: 0 0 15px rgba(0, 144, 81, 0.4);

  /* Glassmorphism */
  --glass-bg: rgba(22, 27, 34, 0.8);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: blur(10px);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Typography */
  --font-primary:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;

  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-toast: 400;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ============================================
   LAYOUT COMPONENTS
   ============================================ */

/* Main Container */
.dn-container {
  width: 100%;
  padding: 0 var(--space-lg);
}

.dn-page-content {
  padding: var(--space-xl) 2.5%;
  width: 100%;
}

/* App Layout */
.dn-app {
  display: flex;
  min-height: 100vh;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

/* Sidebar */
.dn-sidebar {
  width: 260px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--glass-border);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: var(--z-sticky);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal);
}

.dn-sidebar-header {
  height: 64px;
  padding: 0 var(--space-md);
  background: var(--gradient-dragon);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.dn-sidebar-logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.dn-sidebar-logo img {
  max-width: 36px;
  max-height: 36px;
}

.dn-sidebar-title {
  color: white;
  font-size: var(--font-size-lg);
  font-weight: 700;
  letter-spacing: -0.5px;
}

.dn-sidebar-subtitle {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Navigation */
.dn-nav {
  flex: 1;
  padding: var(--space-md);
  overflow-y: auto;
}

.dn-nav-section {
  margin-bottom: var(--space-lg);
}

.dn-nav-label {
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: var(--space-lg) var(--space-md) var(--space-xs);
  margin-bottom: var(--space-xs);
}

.dn-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
  font-size: var(--font-size-sm);
}

.dn-nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  padding-left: calc(var(--space-md) + 4px);
}

.dn-nav-item.active {
  background: rgba(199, 33, 39, 0.1);
  color: var(--dn-red-light);
  border-left: 4px solid var(--dn-red-primary);
  border-radius: 0;
  margin: 0 -16px; /* Fill sidebar width if padding is 16px */
  padding-left: 12px;
}

.dn-nav-icon {
  width: 20px;
  height: 20px;
  opacity: 0.7;
}

.dn-nav-badge {
  margin-left: auto;
  background: var(--dn-red-primary);
  color: white;
  font-size: var(--font-size-xs);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

/* Sidebar Toggle Button */
.dn-sidebar-toggle {
  position: absolute;
  right: -16px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
  box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.dn-sidebar-toggle:hover {
  background: var(--bg-hover);
  color: white;
  border-color: var(--text-muted);
}

.dn-sidebar-toggle svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-normal);
}

/* Collapsed Sidebar State */
.dn-sidebar.collapsed {
  width: 72px;
}

.dn-sidebar.collapsed .dn-sidebar-header {
  padding: var(--space-md) var(--space-sm);
  justify-content: center;
}

.dn-sidebar.collapsed .dn-sidebar-header > div:last-child {
  display: none;
}

.dn-sidebar.collapsed .dn-nav-label {
  display: none;
}

.dn-sidebar.collapsed .dn-nav-item {
  flex-direction: column;
  padding: var(--space-sm);
  gap: 0;
  font-size: 0;
  line-height: 0;
  color: transparent;
}

.dn-sidebar.collapsed .dn-nav-item .dn-nav-icon {
  width: 24px;
  height: 24px;
  opacity: 1;
  color: var(--text-secondary);
}

.dn-sidebar.collapsed .dn-nav-item.active .dn-nav-icon {
  color: var(--dn-red-light);
}

.dn-sidebar.collapsed .dn-nav-item:hover .dn-nav-icon {
  color: var(--text-primary);
}

.dn-sidebar.collapsed .dn-nav-badge {
  display: none;
}

.dn-sidebar.collapsed .dn-sidebar-toggle svg {
  transform: rotate(180deg);
}

.dn-sidebar.collapsed .dn-sidebar-footer-text {
  display: none;
}

/* Main Content Adjustment */
.dn-main {
  flex: 1;
  min-width: 0;
  padding-left: 260px;
  min-height: 100vh;
  transition: padding-left var(--transition-normal);
}

.dn-app.sidebar-collapsed .dn-main {
  padding-left: 72px;
}

.dn-app.sidebar-collapsed .dn-nav-item {
  border-left: none;
  margin: 0;
}

/* Header */
.dn-header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--glass-border);
  padding: 0 2.5%;
  height: 64px;
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.dn-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.dn-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.dn-breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.dn-breadcrumb a:hover {
  color: var(--text-primary);
}

.dn-breadcrumb-sep {
  color: var(--text-muted);
}

.dn-header-right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* Status Indicator */
.dn-status {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
}

.dn-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.dn-status-dot.online {
  background: var(--status-online);
  box-shadow: 0 0 8px var(--status-online);
}

.dn-status-dot.offline {
  background: var(--status-offline);
  animation: none;
}

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

/* User Menu */
.dn-user-menu {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.dn-user-menu:hover {
  background: var(--bg-hover);
  color: white;
}

.dn-user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient-dragon);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.dn-user-name {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
}

.dn-user-role {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

/* ============================================
   CARDS & PANELS
   ============================================ */
.dn-card {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.dn-card:hover {
  border-color: rgba(199, 33, 39, 0.3);
  box-shadow: var(--shadow-md);
}

.dn-card-header {
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dn-card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.dn-card-body {
  padding: var(--space-lg);
}

.dn-card-footer {
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-tertiary);
  border-top: 1px solid var(--glass-border);
}

/* Stats Cards */
.dn-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.dn-stat-card {
  background: var(--gradient-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
}

.dn-stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--dn-red-primary);
}

.dn-stat-card.green::before {
  background: var(--dn-green);
}

.dn-stat-card.orange::before {
  background: var(--dn-orange);
}

.dn-stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(199, 33, 39, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--dn-red-primary);
}

.dn-stat-card.green .dn-stat-icon {
  background: rgba(0, 144, 81, 0.2);
  color: var(--dn-green);
}

.dn-stat-card.orange .dn-stat-icon {
  background: rgba(255, 147, 0, 0.2);
  color: var(--dn-orange);
}

.dn-stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.dn-stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: var(--space-xs);
}

/* ============================================
   TABLES
   ============================================ */
.dn-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
}

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

.dn-table th {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  letter-spacing: 0.5px;
  padding: var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
  white-space: nowrap;
}

.dn-table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--glass-border);
  color: var(--text-primary);
  vertical-align: middle;
}

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

.dn-table tbody tr {
  transition: background var(--transition-fast);
}

.dn-table tbody tr:hover {
  background: var(--bg-hover);
}

/* Table cell styles */
.dn-cell-callsign {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--dn-orange);
}

/* New Sender Info Style */
.dn-sender-info {
  display: flex;
  flex-direction: column;
}

.dn-sender-name {
  color: var(--text-secondary);
  font-size: 0.9em;
}

.dn-cell-tg {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: rgba(199, 33, 39, 0.2);
  color: var(--dn-red-light);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-weight: 500;
}

.dn-cell-ts {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--font-size-xs);
}

.dn-cell-ts.ts1 {
  background: rgba(0, 144, 81, 0.2);
  color: var(--dn-green);
}

.dn-cell-ts.ts2 {
  background: rgba(255, 147, 0, 0.2);
  color: var(--dn-orange);
}

.dn-cell-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
}

.dn-cell-status.online {
  background: rgba(63, 185, 80, 0.2);
  color: var(--status-online);
}

.dn-cell-status.offline {
  background: rgba(248, 81, 73, 0.2);
  color: var(--status-offline);
}

.dn-cell-status.rx {
  background: rgba(0, 144, 81, 0.2);
  color: var(--dn-green);
  animation: glow-green 1s infinite alternate;
}

@keyframes glow-green {
  from {
    box-shadow: 0 0 5px rgba(0, 144, 81, 0.3);
  }
  to {
    box-shadow: 0 0 15px rgba(0, 144, 81, 0.6);
  }
}

/* ============================================
   BUTTONS
   ============================================ */
.dn-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.dn-btn-primary {
  background: var(--gradient-dragon);
  color: white;
  box-shadow: var(--shadow-sm);
}

.dn-btn-primary:hover {
  box-shadow: var(--shadow-glow-red);
  transform: translateY(-1px);
}

.dn-btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}

.dn-btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--dn-red-primary);
}

.dn-btn-success {
  background: var(--dn-green);
  color: white;
}

.dn-btn-success:hover {
  background: var(--dn-green-light);
  box-shadow: var(--shadow-glow-green);
}

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

.dn-btn-danger:hover {
  background: #d73a49;
}

.dn-btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs);
}

.dn-btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-base);
}

.dn-btn-icon {
  padding: var(--space-sm);
  aspect-ratio: 1;
}

/* ============================================
   FORMS
   ============================================ */
.dn-form-group {
  margin-bottom: var(--space-lg);
}

.dn-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.dn-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.dn-input:focus {
  outline: none;
  border-color: var(--dn-red-primary);
  box-shadow: 0 0 0 3px rgba(199, 33, 39, 0.2);
}

/* ============================================
   TOASTS
   ============================================ */
.dn-toast-container {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  z-index: var(--z-toast);
}

.dn-toast {
  background: var(--bg-elevated);
  border-left: 4px solid var(--dn-red-primary);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-width: 300px;
  animation: slideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transition: opacity 0.3s ease;
}

.dn-toast.success {
  border-color: var(--status-online);
}

.dn-toast.success svg {
  color: var(--status-online);
}

.dn-toast.error {
  border-color: var(--status-offline);
}

.dn-toast.error svg {
  color: var(--status-offline);
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ============================================
   ACTIVITY LIVE FEED
   ============================================ */
.dn-activity-feed {
    display: flex;
    flex-direction: column;
}

.dn-activity-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--glass-border);
    animation: fadeIn 0.5s ease;
}

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

.dn-activity-item.new {
    background: rgba(0, 144, 81, 0.1);
}

.dn-activity-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.dn-activity-icon.rx {
    color: var(--dn-green);
    background: rgba(0, 144, 81, 0.2);
}

.dn-activity-content {
    flex: 1;
}

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

.dn-activity-meta {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.dn-activity-time {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    white-space: nowrap;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .dn-sidebar {
    transform: translateX(-100%);
  }

  /* When sidebar is open on mobile */
  .dn-sidebar.open {
    transform: translateX(0);
  }

  .dn-main {
    margin-left: 0;
  }

  .dn-app.sidebar-collapsed .dn-main {
    margin-left: 0;
  }

  .dn-sidebar-toggle {
    display: none;
  }
}

@media (max-width: 768px) {
  .dn-dashboard-grid {
    grid-template-columns: 1fr;
  }

  .dn-stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

  .dn-table th, 
  .dn-table td {
    padding: var(--space-sm);
  }

  /* Hide Elements on Mobile */
  .dn-hidden-mobile {
      display: none !important;
  }
  
  .dn-cell-callsign {
      display: block;
      font-size: var(--font-size-base);
  }

  .dn-sender-name {
      display: block;
      font-size: var(--font-size-xs);
  }
  
  /* Make badges smaller on mobile */
  .dn-cell-tg, .dn-cell-ts, .dn-cell-status {
      font-size: 0.7rem;
      padding: 2px 6px;
  }
}

/* Tooltip Styles */
.dn-tooltip-container {
  position: relative;
  display: inline-block;
  cursor: help;
}

.dn-tooltip-popup {
  visibility: hidden;
  background-color: #333;
  color: #fff;
  text-align: left;
  border-radius: 4px;
  padding: 8px;
  position: absolute;
  z-index: 1000;
  bottom: 125%; /* Position above */
  left: 50%;
  margin-left: -100px; /* Center (approx) - width/2 */
  width: 250px; /* Wider to fit text */
  opacity: 0;
  transition: opacity 0.3s;
  box-shadow: 0 4px 10px rgba(0,0,0,0.5);
  font-size: 0.85em;
  line-height: 1.4;
  border: 1px solid #555;
  pointer-events: none; /* Prevent tooltip interfering with mouse */
}

/* Tooltip arrow */
.dn-tooltip-popup::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: #333 transparent transparent transparent;
}

.dn-tooltip-container:hover .dn-tooltip-popup {
  visibility: visible;
  opacity: 1;
}

.dn-tooltip-label {
    color: #ffd700; /* Gold/Yellow */
    font-weight: bold;
}

/* Sidebar Status Section */
.dn-sidebar-status-section {
    padding: var(--space-md);
    border-top: 1px solid var(--glass-border);
    background: rgba(0,0,0,0.2);
    font-size: var(--font-size-xs);
    margin-top: auto; /* Push to bottom */
}

.dn-sidebar.collapsed .dn-sidebar-status-section {
    display: none;
}

.dn-status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.dn-status-item .label {
    color: var(--text-secondary);
}

.dn-status-item .value,
.dn-sidebar-status-section .dn-cell-status {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    padding: 0;
    font-size: 0; /* Hide text */
    color: transparent;
    display: inline-block;
    background-color: var(--text-muted);
}

.dn-status-item .value.online,
.dn-sidebar-status-section .dn-cell-status.online {
    background-color: var(--dn-green);
    box-shadow: 0 0 8px rgba(46, 160, 67, 0.4);
}

.dn-status-item .value.offline,
.dn-sidebar-status-section .dn-cell-status.offline {
    background-color: var(--dn-red);
    box-shadow: 0 0 8px rgba(218, 54, 51, 0.4);
}

.dn-status-item .value.connecting,
.dn-sidebar-status-section .dn-cell-status.connecting {
    background-color: var(--dn-orange);
    box-shadow: 0 0 8px rgba(210, 153, 34, 0.4);
    animation: status-pulse 1.5s infinite;
}

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

.dn-status-update {
    text-align: center;
    color: var(--text-muted);
    font-size: 10px;
    margin-top: var(--space-md);
    border-top: 1px dashed var(--glass-border);
    padding-top: var(--space-xs);
}

/* Form Elements */
.dn-form-group {
    margin-bottom: var(--space-md);
}

.dn-label {
    display: block;
    margin-bottom: var(--space-xs);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.dn-input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-primary);
    transition: all var(--transition-fast);
}

.dn-input:focus {
    outline: none;
    border-color: var(--dn-red-primary);
    box-shadow: 0 0 0 2px rgba(199, 33, 39, 0.2);
}

.dn-checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-js);
    cursor: pointer;
}

.dn-checkbox {
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: 4px; /* Slightly rounded squares */
    cursor: pointer;
    position: relative;
    display: flex; /* alignment */
    align-items: center;
    justify-content: center;
}

.dn-checkbox:checked {
    background: var(--dn-red-primary);
    border-color: var(--dn-red-primary);
}

.dn-checkbox:checked::after {
    content: "✓";
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.dn-checkbox:focus {
    outline: none;
    border-color: var(--dn-red-light);
}

.dn-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.dn-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.dn-modal {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.dn-modal-overlay.active .dn-modal {
    transform: translateY(0);
}

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

.dn-modal-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.dn-modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    display: flex;
}

.dn-modal-close:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

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

.dn-modal-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
    background: var(--bg-tertiary);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* =====================================
   Scrollbars: Dragon red (page and inner panels)
   Author: SQ9LM Łukasz <sq9lm@dragon-net.pl> (c) 2019-2026, https://sq9lm.dragon-net.pl
   ===================================== */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--dn-red-primary); border-radius: 5px; border: 2px solid var(--bg-primary); }
::-webkit-scrollbar-thumb:hover { background: var(--dn-red-light); }
::-webkit-scrollbar-corner { background: var(--bg-primary); }
@supports not selector(::-webkit-scrollbar) {
    html { scrollbar-color: var(--dn-red-primary) var(--bg-primary); scrollbar-width: thin; }
}

/* =====================================
   Compact sidebar menu (less empty space between sections and items)
   Author: SQ9LM Łukasz <sq9lm@dragon-net.pl> (c) 2019-2026, https://sq9lm.dragon-net.pl
   ===================================== */
.dn-nav { padding: var(--space-sm) var(--space-md); }
.dn-nav-section { margin-bottom: var(--space-sm); }
.dn-nav-label { padding: var(--space-sm) var(--space-md) 2px; margin-bottom: 2px; }
.dn-nav-item { padding: 6px var(--space-md); gap: var(--space-sm); }
.dn-nav-icon { width: 18px; height: 18px; }