/* ================================================
   DevOps Hub Dashboard — style.css
   ================================================
   TABLE OF CONTENTS:
   1.  CSS Variables (Design Tokens)
   2.  Reset & Base Styles
   3.  Navigation Bar
   4.  Hero Section
   5.  Section Layout (shared)
   6.  CI/CD Pipeline
   7.  Pipeline Status Cards
   8.  DevOps Tools Grid
   9.  System Monitoring
  10.  Activity Log
  11.  About Section
  12.  Footer
  13.  Animations & Keyframes
  14.  Responsive (Mobile)
================================================ */


/* ================================================
   1. CSS VARIABLES — Design Tokens
   ================================================
   These are custom properties (variables) that store
   the colour palette, spacing, and typography values.
   Changing a value here updates it everywhere.
================================================ */
:root {
  /* --- Colour Palette --- */
  --bg-primary:    #0d1117;   /* Page background (very dark) */
  --bg-secondary:  #161b22;   /* Card background */
  --bg-tertiary:   #1f2937;   /* Slightly lighter panels */
  --bg-hover:      #21262d;   /* Hover state for cards */

  --border:        #30363d;   /* Subtle card borders */
  --border-light:  #3d444d;   /* Slightly brighter borders on focus */

  --text-primary:  #e6edf3;   /* Main readable text */
  --text-secondary:#8b949e;   /* Dimmer helper text */
  --text-muted:    #484f58;   /* Very subtle text (placeholders, etc.) */

  /* --- Accent Colours --- */
  --accent-blue:   #58a6ff;   /* Links, primary highlights */
  --accent-green:  #3fb950;   /* Success, passed, online */
  --accent-yellow: #d29922;   /* Warning, in-progress */
  --accent-red:    #f85149;   /* Error, failed */
  --accent-purple: #a371f7;   /* Docker, special highlights */
  --accent-cyan:   #39d0d8;   /* Kubernetes, monitor values */
  --accent-orange: #e3994a;   /* AWS, build */

  /* --- Gradient --- */
  --gradient-hero: linear-gradient(135deg, #0d1117 0%, #0d1f35 50%, #0d1117 100%);
  --gradient-card: linear-gradient(145deg, #161b22, #1a2130);

  /* --- Typography --- */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* --- Spacing --- */
  --spacing-xs:   0.25rem;
  --spacing-sm:   0.5rem;
  --spacing-md:   1rem;
  --spacing-lg:   1.5rem;
  --spacing-xl:   2rem;
  --spacing-2xl:  3rem;
  --spacing-3xl:  5rem;

  /* --- Border Radius --- */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  /* --- Shadows --- */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.6);
  --shadow-glow-blue:   0 0 20px rgba(88,166,255,0.15);
  --shadow-glow-green:  0 0 20px rgba(63,185,80,0.2);

  /* --- Transitions --- */
  --transition-fast:   0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow:   0.4s ease;

  /* --- Navbar height (used for hero padding offset) --- */
  --navbar-height: 64px;
}


/* ================================================
   2. RESET & BASE STYLES
   ================================================
   Remove default browser styling and apply a
   consistent baseline across all elements.
================================================ */
*, *::before, *::after {
  box-sizing: border-box; /* Border and padding are INCLUDED in width/height */
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth; /* Enables smooth anchor navigation */
  scroll-padding-top: var(--navbar-height); /* Prevents fixed nav from covering content */
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden; /* Prevent horizontal scroll on mobile */
}

/* Monospace helper — applied to code-like values */
.mono { font-family: var(--font-mono); }

/* Remove default list styling */
ul { list-style: none; }

/* Smooth image scaling */
img { max-width: 100%; display: block; }

/* Focus outline for keyboard accessibility */
:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}


/* ================================================
   3. NAVIGATION BAR
   ================================================
   Fixed at the top of the viewport so it's always
   visible while the user scrolls.
================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--navbar-height);
  background: rgba(13, 17, 23, 0.85); /* Semi-transparent so page shows through */
  backdrop-filter: blur(12px);         /* Frosted glass effect */
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition-normal);
}

/* Add a glow shadow when the user scrolls down (applied via JS) */
.navbar.scrolled {
  box-shadow: 0 1px 20px rgba(0,0,0,0.5);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

/* --- Logo --- */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  font-size: 1.4rem;
  color: var(--accent-blue);
  animation: spin-slow 8s linear infinite; /* Slowly spinning gear */
  display: inline-block;
}

.logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.logo-accent {
  color: var(--accent-blue);
}

/* --- Nav Links --- */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  flex: 1;
}

.nav-link {
  display: block;
  padding: var(--spacing-xs) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.nav-link.active {
  color: var(--accent-blue);
  background: rgba(88,166,255,0.1);
}

/* --- Live Clock --- */
.nav-clock {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.clock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse-dot 2s ease-in-out infinite;
}

/* --- Mobile hamburger button --- */
.nav-toggle {
  display: none; /* Hidden on desktop; shown on mobile */
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
}

.nav-toggle span {
  width: 100%;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}


/* ================================================
   4. HERO SECTION
================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--navbar-height) + var(--spacing-3xl)) var(--spacing-xl) var(--spacing-3xl);
  background: var(--gradient-hero);
  overflow: hidden;
}

/* Decorative background grid pattern */
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(88,166,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(88,166,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none; /* Grid should never block clicks */
}

/* A glowing radial gradient centered in the hero */
.hero::before {
  content: '';
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(88,166,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative; /* Sits above the decorative grid */
  max-width: 800px;
  text-align: center;
  z-index: 1;
}

/* --- "All Systems Operational" badge --- */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(63,185,80,0.12);
  border: 1px solid rgba(63,185,80,0.3);
  border-radius: 100px; /* Pill shape */
  color: var(--accent-green);
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: var(--spacing-xl);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
}

/* --- Main heading --- */
.hero-title {
  font-size: clamp(3rem, 8vw, 5.5rem); /* Scales with viewport width */
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -2px;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.hero-title-accent {
  /* Gradient text effect */
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.7;
}

/* --- CTA Buttons --- */
.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-3xl);
}

/* Base button styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 0.75rem 1.75rem;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-normal), opacity var(--transition-fast);
}

.btn:active { transform: scale(0.97); }

/* Primary = solid blue, calls attention */
.btn-primary {
  background: var(--accent-blue);
  color: #0d1117;
}
.btn-primary:hover {
  box-shadow: 0 0 24px rgba(88,166,255,0.4);
  transform: translateY(-2px);
}

/* Secondary = outlined, less emphasis */
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}
.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--accent-blue);
  transform: translateY(-2px);
}

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

.btn-icon { font-size: 0.9rem; }

/* --- Hero Stats Row --- */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-2xl);
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}


/* ================================================
   5. SECTION LAYOUT (SHARED)
   ================================================
   Common structure shared by all content sections.
================================================ */
.main-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.section {
  padding: var(--spacing-3xl) 0;
  border-bottom: 1px solid var(--border);
}

.section:last-child { border-bottom: none; }

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  margin-bottom: var(--spacing-sm);
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
}


/* ================================================
   6. CI/CD PIPELINE
================================================ */

/* Horizontal scrollable pipeline row */
.pipeline-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding: var(--spacing-lg) var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  /* Hide scrollbar but keep scrollability */
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

/* --- Single Stage Card --- */
.pipeline-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  min-width: 110px;
  text-align: center;
  transition: border-color var(--transition-normal),
              box-shadow var(--transition-normal),
              transform var(--transition-normal);
  cursor: default;
  flex-shrink: 0;
}

.pipeline-stage:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
}

/* Running state (yellow glow) */
.pipeline-stage.running {
  border-color: var(--accent-yellow);
  box-shadow: 0 0 20px rgba(210,153,34,0.25);
}

/* Success state (green glow) */
.pipeline-stage.success {
  border-color: var(--accent-green);
  box-shadow: 0 0 20px rgba(63,185,80,0.2);
}

.stage-icon {
  font-size: 1.8rem;
  line-height: 1;
}

.stage-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.stage-details {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* --- Stage Status Text --- */
.stage-status {
  font-size: 0.7rem;
  font-weight: 600;
  font-family: var(--font-mono);
  padding: 2px 8px;
  border-radius: 100px;
}

.stage-status.pending {
  color: var(--text-muted);
  background: rgba(255,255,255,0.04);
}

.stage-status.running {
  color: var(--accent-yellow);
  background: rgba(210,153,34,0.12);
  animation: blink 1s step-end infinite; /* Blinks to signal activity */
}

.stage-status.success {
  color: var(--accent-green);
  background: rgba(63,185,80,0.12);
}

/* --- Connector Arrow Between Stages --- */
.pipeline-connector {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  padding: 0 4px;
}

.connector-line {
  width: 24px;
  height: 2px;
  background: var(--border);
  transition: background var(--transition-slow);
}

.pipeline-connector.active .connector-line {
  background: var(--accent-green);
}

.connector-arrow {
  font-size: 1.4rem;
  color: var(--border);
  line-height: 1;
  transition: color var(--transition-slow);
}

.pipeline-connector.active .connector-arrow {
  color: var(--accent-green);
}

/* --- Pipeline Completion Message Banner --- */
.pipeline-message {
  text-align: center;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: var(--spacing-xl);
  display: none; /* Hidden until pipeline finishes */
  animation: fade-in 0.4s ease forwards;
}

.pipeline-message.success {
  background: rgba(63,185,80,0.1);
  border: 1px solid rgba(63,185,80,0.3);
  color: var(--accent-green);
  display: block;
}

.pipeline-message.running {
  background: rgba(210,153,34,0.1);
  border: 1px solid rgba(210,153,34,0.3);
  color: var(--accent-yellow);
  display: block;
}


/* ================================================
   7. PIPELINE STATUS CARDS
   ================================================
   Four summary cards: Build, Tests, Deployment, App
================================================ */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-md);
}

.status-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-normal),
              box-shadow var(--transition-normal),
              transform var(--transition-fast);
}

.status-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.status-card-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.status-card-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 2px;
}

.status-card-value {
  font-size: 0.95rem;
  font-weight: 700;
}

.status-card-value.pending   { color: var(--text-muted); }
.status-card-value.running   { color: var(--accent-yellow); }
.status-card-value.success   { color: var(--accent-green); }
.status-card-value.failed    { color: var(--accent-red); }


/* ================================================
   8. DEVOPS TOOLS GRID
================================================ */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-lg);
}

/* --- Single Tool Card --- */
.tool-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  transition: transform var(--transition-normal),
              border-color var(--transition-normal),
              box-shadow var(--transition-normal);
  cursor: default;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  box-shadow: var(--shadow-lg);
}

.tool-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* --- Tool Icon Circles (each has a unique colour) --- */
.tool-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.tool-icon.git        { background: rgba(248,81,73,0.15);   border: 1px solid rgba(248,81,73,0.3); }
.tool-icon.jenkins    { background: rgba(227,153,74,0.15);  border: 1px solid rgba(227,153,74,0.3); }
.tool-icon.docker     { background: rgba(88,166,255,0.15);  border: 1px solid rgba(88,166,255,0.3); }
.tool-icon.kubernetes { background: rgba(57,208,216,0.15);  border: 1px solid rgba(57,208,216,0.3); }
.tool-icon.linux      { background: rgba(163,113,247,0.15); border: 1px solid rgba(163,113,247,0.3); }
.tool-icon.aws        { background: rgba(210,153,34,0.15);  border: 1px solid rgba(210,153,34,0.3); }

/* --- Tool Category Badge --- */
.tool-badge {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 100px;
  background: rgba(88,166,255,0.12);
  color: var(--accent-blue);
  border: 1px solid rgba(88,166,255,0.2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tool-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.tool-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

/* --- Tags at the bottom of each card --- */
.tool-tags {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.tag {
  font-size: 0.7rem;
  padding: 2px 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-muted);
}


/* ================================================
   9. SYSTEM MONITORING
================================================ */
.monitoring-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

/* --- Single Monitor Card --- */
.monitor-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  transition: border-color var(--transition-normal),
              transform var(--transition-fast);
}

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

.monitor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.monitor-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.monitor-icon { font-size: 1.1rem; }

/* The percentage number on the right */
.monitor-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.monitor-value.warning { color: var(--accent-yellow); }
.monitor-value.critical { color: var(--accent-red); }

/* --- Progress Bar Track (the gray track) --- */
.progress-bar-track {
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 100px;
  overflow: hidden;
}

/* --- Animated progress bar fill --- */
.progress-bar {
  height: 100%;
  border-radius: 100px;
  width: 0;  /* Starts at 0 — JS animates it to data-width */
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Each bar has a unique gradient */
.progress-bar.cpu    { background: linear-gradient(90deg, var(--accent-blue), #2f81d8); }
.progress-bar.memory { background: linear-gradient(90deg, var(--accent-yellow), #b5831e); }
.progress-bar.disk   { background: linear-gradient(90deg, var(--accent-purple), #7c4fcf); }

.monitor-meta {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* --- Server Status Card (slightly different layout) --- */
.server-status-card { justify-content: flex-start; }

.status-badge {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
}

.status-badge.online {
  color: var(--accent-green);
  background: rgba(63,185,80,0.12);
  border: 1px solid rgba(63,185,80,0.3);
}

.server-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm) var(--spacing-md);
}

.server-detail {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.detail-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.detail-value {
  font-size: 0.82rem;
  color: var(--text-secondary);
}


/* ================================================
  10. ACTIVITY LOG
  ================================================
  Terminal-style log panel for deployment events.
================================================ */
.activity-log {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* Log header mimics a macOS/Linux terminal title bar */
.log-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
}

.log-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Three coloured dots like a macOS window */
.log-dots { display: flex; gap: 6px; }
.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot.red    { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green  { background: #28c840; }

.log-body {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-height: 280px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

/* --- Single Log Entry --- */
.log-entry {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  transition: background var(--transition-fast);
  animation: slide-in 0.3s ease forwards;
}

.log-entry:hover { background: var(--bg-hover); }

/* Timestamp */
.log-time {
  color: var(--text-muted);
  flex-shrink: 0;
  min-width: 60px;
}

/* Coloured tag label */
.log-tag {
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.68rem;
  font-weight: 700;
  flex-shrink: 0;
  text-transform: uppercase;
}

.success-tag { background: rgba(63,185,80,0.15);  color: var(--accent-green); }
.info-tag    { background: rgba(88,166,255,0.12); color: var(--accent-blue); }
.error-tag   { background: rgba(248,81,73,0.15);  color: var(--accent-red); }
.warn-tag    { background: rgba(210,153,34,0.15); color: var(--accent-yellow); }

.log-msg { color: var(--text-secondary); }


/* ================================================
  11. ABOUT SECTION
================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: var(--spacing-lg);
}

/* The main "What is DevOps?" card spans the full left column */
.main-about {
  grid-row: span 2;
}

.about-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  transition: border-color var(--transition-normal), transform var(--transition-fast);
}

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

.about-icon {
  font-size: 2rem;
  line-height: 1;
}

.about-icon.small { font-size: 1.4rem; }

.about-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.about-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.about-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
}


/* ================================================
  12. FOOTER
================================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--spacing-2xl) var(--spacing-xl);
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.footer-tagline {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.footer-note {
  font-size: 0.78rem;
  color: var(--text-muted);
}


/* ================================================
  13. ANIMATIONS & KEYFRAMES
================================================ */

/* Pulsing dot (used in hero badge and server status) */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

/* Fades any element into view */
@keyframes fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Slides a new log entry in from the left */
@keyframes slide-in {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Makes the status text blink (used for "Running" stages) */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

/* Slowly rotates the logo gear icon */
@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* Pulsing glow ring (used on badge dot and server Online badge) */
.pulse {
  animation: pulse-dot 2s ease-in-out infinite;
}


/* ================================================
  14. RESPONSIVE — MOBILE STYLES
  ================================================
  Styles applied when the viewport is <= 768px wide.
================================================ */
@media (max-width: 768px) {

  /* --- Nav: hide text links, show hamburger --- */
  .nav-links {
    display: none; /* Hidden by default on mobile */
    position: absolute;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: var(--spacing-md);
    gap: var(--spacing-xs);
  }

  /* When JS adds .open to nav-links, show the menu */
  .nav-links.open { display: flex; }

  .nav-toggle { display: flex; }

  .nav-clock { display: none; } /* Hide clock to save space on mobile */

  /* --- Hero: smaller text --- */
  .hero-title { letter-spacing: -1px; }
  .hero-stats { gap: var(--spacing-lg); }
  .stat-number { font-size: 1.4rem; }

  /* --- Pipeline: allow horizontal scroll --- */
  .pipeline-container {
    justify-content: flex-start;
    gap: 0;
  }

  /* --- About: single column on mobile --- */
  .about-grid {
    grid-template-columns: 1fr;
  }
  .main-about { grid-row: auto; }

  /* --- Buttons: full width on very small screens --- */
  .hero-buttons { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 280px; justify-content: center; }
}

@media (max-width: 480px) {
  .nav-container { padding: 0 var(--spacing-md); }
  .main-content  { padding: 0 var(--spacing-md); }
  .section       { padding: var(--spacing-2xl) 0; }
  .status-grid   { grid-template-columns: 1fr 1fr; }
}