/* Modern Dark Theme Design System for DKX Cameras NVR */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-main: #0b0f19;
  --bg-card: #131b2e;
  --bg-card-hover: #1a243d;
  --bg-sidebar: #0f172a;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.35);
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.4);
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;
  --accent-amber: #f59e0b;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-subtle: #6b7280;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --header-height: 64px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Header & Navigation Bar */
.nvr-header {
  height: var(--header-height);
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.nvr-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #fff;
}

.nvr-brand-logo {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #6366f1, #06b6d4);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px var(--primary-glow);
}

.nvr-brand-logo svg {
  width: 22px;
  height: 22px;
  color: #fff;
}

.nvr-brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 40%, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nvr-brand-badge {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(99, 102, 241, 0.2);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.3);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.nvr-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nvr-nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nvr-nav-link svg {
  width: 18px;
  height: 18px;
}

.nvr-nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.nvr-nav-link.active {
  color: #fff;
  background: rgba(99, 102, 241, 0.18);
  border: 1px solid rgba(99, 102, 241, 0.35);
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.2);
}

.nvr-user-menu {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nvr-user-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.nvr-user-role-admin {
  background: rgba(244, 63, 94, 0.15);
  color: #fb7185;
  border: 1px solid rgba(244, 63, 94, 0.3);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
}

.nvr-user-role-viewer {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
}

.nvr-logout-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: var(--radius-md);
  color: #fca5a5;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.2s;
}

.nvr-logout-btn:hover {
  background: rgba(239, 68, 68, 0.2);
  color: #fff;
}

/* Main Content Area */
.nvr-container {
  flex: 1;
  padding: 24px;
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
}

/* Page Header */
.nvr-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.nvr-page-title-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nvr-page-title {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
}

.nvr-page-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* General Card */
.nvr-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  position: relative;
  overflow: hidden;
}

.nvr-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
}

.nvr-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Status Indicator Dot */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
}

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

.status-dot.online {
  background-color: var(--accent-emerald);
  box-shadow: 0 0 10px var(--accent-emerald);
}

.status-dot.online::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1px solid var(--accent-emerald);
  animation: pulse-ring 1.8s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

.status-dot.offline {
  background-color: var(--text-subtle);
}

.status-dot.recording {
  background-color: var(--accent-rose);
  box-shadow: 0 0 10px var(--accent-rose);
}

@keyframes pulse-ring {
  0% { transform: scale(0.9); opacity: 0.8; }
  100% { transform: scale(2.2); opacity: 0; }
}

/* Action Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #4f46e5);
  color: #fff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4f46e5, #4338ca);
  box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-color);
  color: #e5e7eb;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.btn-danger {
  background: linear-gradient(135deg, #dc2626, #ef4444);
  color: #fff;
}

.btn-danger:hover {
  background: linear-gradient(135deg, #b91c1c, #dc2626);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

/* Form Controls */
.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  background: rgba(11, 15, 25, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: #fff;
  font-size: 0.92rem;
  outline: none;
  font-family: inherit;
  transition: all 0.2s;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Tables */
.nvr-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.nvr-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.nvr-table th {
  background: rgba(15, 23, 42, 0.8);
  padding: 14px 18px;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.nvr-table td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  vertical-align: middle;
}

.nvr-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Mobile Responsiveness */
@media (max-width: 900px) {
  .nvr-header {
    padding: 0 16px;
    height: auto;
    min-height: var(--header-height);
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 10px;
    padding-bottom: 10px;
  }
  .nvr-nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }
  .nvr-container {
    padding: 16px;
  }
}