/* CSS Custom Properties & Design Tokens */
:root {
  /* Color Palette (HSL-based) */
  --bg-color: hsl(240, 20%, 5%);
  --panel-bg: hsla(240, 20%, 8%, 0.7);
  --panel-border: hsla(240, 20%, 20%, 0.4);
  --panel-border-hover: hsla(180, 100%, 50%, 0.5);
  
  --text-primary: hsl(0, 0%, 95%);
  --text-secondary: hsl(240, 8%, 70%);
  --text-muted: hsl(240, 8%, 45%);
  
  /* Accent Colors */
  --accent-cyan: hsl(180, 100%, 50%);
  --accent-violet: hsl(290, 100%, 60%);
  --status-online: hsl(140, 100%, 45%);
  --status-offline: hsl(0, 90%, 55%);
  
  /* Spacing Scale (4px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Typography */
  --font-primary: 'Inter', sans-serif;
  --font-display: 'Outfit', sans-serif;
  
  /* Shadows & Depth */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --glass-filter: blur(16px);
  
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
}

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

body {
  font-family: var(--font-primary);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  padding: var(--space-4);
}

/* Animated Grid Background */
.cyber-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: -1;
  mask-image: radial-gradient(ellipse at center, black, transparent 80%);
}

/* Header Area */
.main-header {
  text-align: center;
  margin-top: var(--space-6);
  margin-bottom: var(--space-7);
}

.logo-area {
  display: inline-block;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: var(--glass-filter);
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.main-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: 0.15em;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: var(--space-2) 0;
}

.title-icon {
  margin-right: var(--space-2);
  filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.5));
  vertical-align: middle;
  display: inline-block;
  -webkit-text-fill-color: initial;
}

.subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(0, 229, 255, 0.05);
  border: 1px solid rgba(0, 229, 255, 0.2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.status-badge .status-text {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-cyan);
  letter-spacing: 0.05em;
}

.pulse-ring {
  width: 8px;
  height: 8px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  display: inline-block;
  position: relative;
}

.pulse-ring::after {
  content: '';
  width: 100%;
  height: 100%;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  position: absolute;
  top: 0;
  left: 0;
  animation: pulse 2s infinite;
}

/* Dashboard Layout */
.dashboard-content {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-7);
  flex-grow: 1;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
  letter-spacing: 0.05em;
  border-left: 3px solid var(--accent-cyan);
  padding-left: var(--space-3);
}

/* Fleet Cards Grid */
.grid-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media(min-width: 768px) {
  .grid-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media(min-width: 1024px) {
  .grid-container {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Card Styles */
.node-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: var(--glass-filter);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 180px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.node-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--accent-cyan);
  opacity: 0;
  transition: opacity 0.2s;
}

.node-card.offline::before {
  background: var(--status-offline);
}

.node-card:hover {
  transform: translateY(-4px);
  border-color: var(--panel-border-hover);
  box-shadow: var(--shadow-md), 0 0 20px rgba(0, 229, 255, 0.15);
}

.node-card.offline:hover {
  border-color: rgba(255, 23, 68, 0.4);
  box-shadow: var(--shadow-md), 0 0 20px rgba(255, 23, 68, 0.1);
}

.node-card:hover::before {
  opacity: 1;
}

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

.hostname {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.status-badge-inline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.indicator-ring {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.node-card.online .indicator-ring {
  background-color: var(--status-online);
  box-shadow: 0 0 8px var(--status-online);
}

.node-card.offline .indicator-ring {
  background-color: var(--status-offline);
  box-shadow: 0 0 8px var(--status-offline);
}

.node-card.online .status-text-inline {
  color: var(--status-online);
}

.node-card.offline .status-text-inline {
  color: var(--status-offline);
}

/* Card Body */
.card-body {
  margin-bottom: var(--space-4);
  flex-grow: 1;
}

.role-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
  min-height: 40px;
}

.ip-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.05);
  font-family: monospace;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Card Footer */
.card-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: var(--space-3);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.specs-text {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 75%;
}

.latency-badge {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.08);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 229, 255, 0.15);
}

/* Services section mapping */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

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

@media(min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.service-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: var(--glass-filter);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: all 0.25s ease;
}

.service-card:hover {
  transform: scale(1.02);
  border-color: var(--panel-border-hover);
  box-shadow: 0 8px 24px rgba(0, 229, 255, 0.1);
}

.service-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
}

.service-card:hover .service-header {
  color: var(--accent-cyan);
}

.service-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.2s ease;
}

.service-card:hover .service-icon {
  transform: scale(1.1);
}

.status-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.status-indicator.online {
  background: var(--status-online);
  box-shadow: 0 0 6px var(--status-online);
}

.status-indicator.offline {
  background: var(--status-offline);
  box-shadow: 0 0 6px var(--status-offline);
}

.service-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
}

.service-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.service-url {
  font-family: monospace;
  font-size: 0.7rem;
  color: var(--accent-cyan);
  opacity: 0.8;
  margin-top: auto;
}

/* Skeletons */
.skeleton-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  min-height: 180px;
  position: relative;
  overflow: hidden;
}

.skeleton-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  transform: translateX(-100%);
  background-image: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0,
    rgba(255, 255, 255, 0.02) 20%,
    rgba(255, 255, 255, 0.05) 60%,
    rgba(255, 255, 255, 0)
  );
  animation: shimmer 1.5s infinite;
}

/* ========================================= */
/* Public Biography Landing Page Styling     */
/* ========================================= */
.bio-container {
  max-width: 800px;
  width: 100%;
  margin: var(--space-7) auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  flex-grow: 1;
}

.profile-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: var(--glass-filter);
  padding: var(--space-6) var(--space-5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  position: relative;
}

@media(min-width: 640px) {
  .profile-card {
    padding: var(--space-8) var(--space-6);
  }
}

.avatar-container {
  position: relative;
  width: 96px;
  height: 96px;
  margin-bottom: var(--space-2);
}

.avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.2);
  z-index: 1;
  position: relative;
  object-fit: cover;
}

.avatar-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-violet), var(--accent-cyan));
  filter: blur(16px);
  opacity: 0.6;
}

.profile-name {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.profile-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
}

.profile-bio {
  font-size: 0.95rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 600px;
}

.abilities-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  margin: var(--space-2) 0;
}

.ability-badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.05);
  border: 1px solid rgba(0, 229, 255, 0.15);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
}

/* Buttons System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-violet), var(--accent-cyan));
  color: hsl(240, 20%, 4%);
  box-shadow: 0 4px 14px rgba(0, 229, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 229, 255, 0.5);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--panel-border);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-cyan);
}

.btn-icon {
  width: 18px;
  height: 18px;
}

.social-links {
  display: flex;
  gap: var(--space-3);
}

.social-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  transition: all 0.2s;
}

.social-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-cyan);
  transform: translateY(-1px);
}

/* Projects grid bio */
.projects-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media(min-width: 640px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-item {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: var(--glass-filter);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: all 0.2s;
}

.project-item:hover {
  border-color: var(--panel-border-hover);
  transform: translateY(-2px);
}

.project-item-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
}

.project-item-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.project-link {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-decoration: none;
  margin-top: auto;
  padding-top: var(--space-2);
}

.project-tag {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: inline-block;
  align-self: flex-start;
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  margin-top: auto;
}

.status-cta-area {
  text-align: center;
  margin-top: var(--space-3);
}

/* ========================================= */
/* Login Gateway View Styling                */
/* ========================================= */
.login-body {
  justify-content: center;
  align-items: center;
}

.login-container {
  max-width: 440px;
  width: 100%;
}

.login-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: var(--glass-filter);
  padding: var(--space-6) var(--space-5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.lock-icon-container {
  width: 64px;
  height: 64px;
  background: rgba(0, 229, 255, 0.05);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: var(--space-4);
  position: relative;
}

.lock-icon-container .pulse-ring {
  width: 100%;
  height: 100%;
  position: absolute;
}

.lock-icon {
  width: 24px;
  height: 24px;
}

.login-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.login-subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
}

.login-form {
  width: 100%;
}

.input-group {
  position: relative;
  width: 100%;
}

.input-group input {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--panel-border);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 0.9rem;
  transition: all 0.2s;
  text-align: center;
}

.input-group input:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.1);
}

.error-banner {
  display: none;
  width: 100%;
  margin-top: var(--space-4);
  background: rgba(255, 23, 68, 0.1);
  border: 1px solid rgba(255, 23, 68, 0.3);
  color: var(--status-offline);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
}

/* Footer styling */
.main-footer {
  text-align: center;
  margin-top: var(--space-8);
  padding: var(--space-5) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* Keyframes Animations */
@keyframes pulse {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(0, 229, 255, 0.5);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 8px rgba(0, 229, 255, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(0, 229, 255, 0);
  }
}