/* Custom Cascade Layers for architecture */
@layer reset, base, theme, components, utilities;

@layer reset {
  /* Box sizing and border reset */
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-block-size: 100vh;
    overflow-x: hidden;
  }

  /* Accessible media elements */
  img, svg, video {
    display: block;
    max-inline-size: 100%;
    block-size: auto;
  }

  /* Buttons and form defaults */
  button, input, select, textarea {
    font: inherit;
    color: inherit;
    background: transparent;
    border: none;
  }

  button {
    cursor: pointer;
  }
}

@layer theme {
  :root {
    /* Theme Hue and Saturation tokens, can be overridden dynamically by JS */
    --accent-h: 200;
    --accent-s: 85%;
    
    /* Core Light/Dark theme properties */
    --color-brand-light: hsl(var(--accent-h) var(--accent-s) 50%);
    --color-brand-dark: hsl(var(--accent-h) var(--accent-s) 62%);
    --color-brand: light-dark(var(--color-brand-light), var(--color-brand-dark));
    
    --color-brand-glow-light: hsla(var(--accent-h) var(--accent-s) 50% / 0.12);
    --color-brand-glow-dark: hsla(var(--accent-h) var(--accent-s) 62% / 0.25);
    --color-brand-glow: light-dark(var(--color-brand-glow-light), var(--color-brand-glow-dark));

    /* Surface theme definitions */
    --bg-primary-light: hsl(220 20% 97%);
    --bg-primary-dark: hsl(224 25% 9%);
    --bg-primary: light-dark(var(--bg-primary-light), var(--bg-primary-dark));

    --bg-card-light: hsla(220 20% 100% / 0.8);
    --bg-card-dark: hsla(224 20% 14% / 0.65);
    --bg-card: light-dark(var(--bg-card-light), var(--bg-card-dark));

    --border-color-light: hsla(220 15% 85% / 0.7);
    --border-color-dark: hsla(224 15% 22% / 0.6);
    --border-color: light-dark(var(--border-color-light), var(--border-color-dark));

    /* Typography styling tokens */
    --text-primary-light: hsl(224 15% 15%);
    --text-primary-dark: hsl(220 15% 94%);
    --text-primary: light-dark(var(--text-primary-light), var(--text-primary-dark));

    --text-secondary-light: hsl(224 10% 45%);
    --text-secondary-dark: hsl(220 10% 65%);
    --text-secondary: light-dark(var(--text-secondary-light), var(--text-secondary-dark));

    /* Font tokens */
    --font-sans: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing tokens */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Scrollbar tokens */
    --scrollbar-thumb-light: hsl(220 10% 70%);
    --scrollbar-thumb-dark: hsl(220 10% 30%);
    --scrollbar-thumb: light-dark(var(--scrollbar-thumb-light), var(--scrollbar-thumb-dark));
    
    --scrollbar-track-light: hsl(220 10% 90%);
    --scrollbar-track-dark: hsl(220 10% 15%);
    --scrollbar-track: light-dark(var(--scrollbar-track-light), var(--scrollbar-track-dark));

    /* Shadow and Glow */
    --card-shadow-light: 0 8px 32px 0 rgba(31, 38, 135, 0.04), 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --card-shadow-dark: 0 8px 32px 0 rgba(0, 0, 0, 0.35), inset 0 1px 0 0 rgba(255, 255, 255, 0.05);
    --card-shadow: light-dark(var(--card-shadow-light), var(--card-shadow-dark));

    --backdrop-blur: blur(12px);
    
    /* Global Color Scheme */
    color-scheme: light dark;
  }

  /* Manual theme toggle override styles */
  html[data-theme="light"] {
    color-scheme: light;
  }

  html[data-theme="dark"] {
    color-scheme: dark;
  }

  /* Fallback implementation for pre-2024 browsers lacking light-dark() support */
  @supports not (color: light-dark(white, black)) {
    :root {
      --color-brand: var(--color-brand-light);
      --color-brand-glow: var(--color-brand-glow-light);
      --bg-primary: var(--bg-primary-light);
      --bg-card: var(--bg-card-light);
      --border-color: var(--border-color-light);
      --text-primary: var(--text-primary-light);
      --text-secondary: var(--text-secondary-light);
      --scrollbar-thumb: var(--scrollbar-thumb-light);
      --scrollbar-track: var(--scrollbar-track-light);
      --card-shadow: var(--card-shadow-light);
    }

    @media (prefers-color-scheme: dark) {
      :root {
        --color-brand: var(--color-brand-dark);
        --color-brand-glow: var(--color-brand-glow-dark);
        --bg-primary: var(--bg-primary-dark);
        --bg-card: var(--bg-card-dark);
        --border-color: var(--border-color-dark);
        --text-primary: var(--text-primary-dark);
        --text-secondary: var(--text-secondary-dark);
        --scrollbar-thumb: var(--scrollbar-thumb-dark);
        --scrollbar-track: var(--scrollbar-track-dark);
        --card-shadow: var(--card-shadow-dark);
      }
    }

    html[data-theme="light"] {
      --color-brand: var(--color-brand-light);
      --color-brand-glow: var(--color-brand-glow-light);
      --bg-primary: var(--bg-primary-light);
      --bg-card: var(--bg-card-light);
      --border-color: var(--border-color-light);
      --text-primary: var(--text-primary-light);
      --text-secondary: var(--text-secondary-light);
      --scrollbar-thumb: var(--scrollbar-thumb-light);
      --scrollbar-track: var(--scrollbar-track-light);
      --card-shadow: var(--card-shadow-light);
    }

    html[data-theme="dark"] {
      --color-brand: var(--color-brand-dark);
      --color-brand-glow: var(--color-brand-glow-dark);
      --bg-primary: var(--bg-primary-dark);
      --bg-card: var(--bg-card-dark);
      --border-color: var(--border-color-dark);
      --text-primary: var(--text-primary-dark);
      --text-secondary: var(--text-secondary-dark);
      --scrollbar-thumb: var(--scrollbar-thumb-dark);
      --scrollbar-track: var(--scrollbar-track-dark);
      --card-shadow: var(--card-shadow-dark);
    }
  }
}

@layer base {
  body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    padding-block-end: var(--spacing-xl);
    position: relative;
    transition: background-color 0.3s ease, color 0.3s ease;
  }

  /* Custom standard scrollbars */
  html {
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
    scrollbar-width: auto;
  }

  /* Keyboard focus states */
  :focus-visible {
    outline: 2px solid var(--color-brand);
    outline-offset: 4px;
  }

  h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
  }
  
  a {
    color: var(--color-brand);
    text-decoration: none;
    transition: color 0.2s ease;
  }

  a:hover {
    color: hsl(var(--accent-h) var(--accent-s) 40%);
  }
}

@layer components {
  /* Ambient glowing background blobs */
  .ambient-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    z-index: -1;
    pointer-events: none;
    transition: background 0.3s ease;
  }

  .glow-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, var(--color-brand) 0%, transparent 70%);
  }

  .glow-2 {
    top: 40%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, hsl(calc(var(--accent-h) + 60) var(--accent-s) 55%) 0%, transparent 70%);
  }

  /* App Header Styles */
  .app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-card);
    backdrop-filter: var(--backdrop-blur);
    border-block-end: 1px solid var(--border-color);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
    transition: background 0.3s ease, border 0.3s ease;
  }

  .header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
  }

  .logo-icon {
    color: var(--color-brand);
  }

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

  .main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
  }

  .nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 8px;
    transition: color 0.2s ease, background 0.2s ease;
  }

  .nav-link:hover, .nav-link.active {
    color: var(--text-primary);
    background: var(--color-brand-glow);
  }

  /* Theme Switcher Button */
  .theme-toggle-btn {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    box-shadow: var(--card-shadow);
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.3s ease;
  }

  .theme-toggle-btn:hover {
    transform: scale(1.05);
    border-color: var(--color-brand);
  }

  /* Dynamic visual display of icons based on color scheme */
  .icon-sun {
    display: none;
  }

  .icon-moon {
    display: block;
  }

  :root:has(meta[name="color-scheme"][content="dark"]) .icon-sun,
  html[data-theme="dark"] .icon-sun {
    display: block;
  }

  :root:has(meta[name="color-scheme"][content="dark"]) .icon-moon,
  html[data-theme="dark"] .icon-moon {
    display: none;
  }

  /* Main Container */
  .app-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
  }

  /* Hero Section */
  .hero-section {
    padding: var(--spacing-xl) var(--spacing-lg);
    background: var(--bg-card);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    box-shadow: var(--card-shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: border-color 0.3s ease, background-color 0.3s ease;
  }

  .hero-content {
    max-width: 800px;
  }

  .badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-brand-glow);
    border: 1px solid var(--color-brand);
    color: var(--color-brand);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
  }

  .hero-title {
    font-size: clamp(2rem, 1.5rem + 2vw, 3.5rem);
    font-family: var(--font-sans);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--color-brand) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-wrap: balance;
  }

  .hero-description {
    font-size: clamp(1rem, 0.95rem + 0.25vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    text-wrap: pretty;
  }

  .hero-actions-container {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
  }

  /* Premium Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px 24px;
    border-radius: 12px;
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
  }

  .btn-primary {
    background: var(--color-brand);
    color: light-dark(white, hsl(220 25% 9%));
    box-shadow: 0 4px 20px hsla(var(--accent-h) var(--accent-s) 50% / 0.3);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px hsla(var(--accent-h) var(--accent-s) 50% / 0.45);
  }

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

  .btn-secondary:hover {
    transform: translateY(-2px);
    border-color: var(--color-brand);
    background: var(--color-brand-glow);
  }

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

  .btn-outline:hover {
    border-color: var(--color-brand);
    background: var(--color-brand-glow);
  }

  .btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
    border-radius: 8px;
  }

  .btn-xs {
    padding: 4px 10px;
    font-size: 0.75rem;
    border-radius: 6px;
  }

  /* Dashboard Grid */
  .dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
  }

  /* Card Component */
  .card {
    background: var(--bg-card);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    transition: transform 0.25s cubic-bezier(0.165, 0.84, 0.44, 1), border-color 0.3s ease, box-shadow 0.25s ease;
  }

  .card:hover {
    transform: translateY(-4px);
    border-color: hsla(var(--accent-h) var(--accent-s) 50% / 0.5);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.08);
  }

  .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-block-end: 1px solid var(--border-color);
    padding-block-end: var(--spacing-sm);
  }

  .card-title {
    font-size: 1.15rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
  }

  .title-icon {
    color: var(--color-brand);
  }

  .card-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    flex-grow: 1;
  }

  .badge-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
  }

  /* Widget Specifics: System Console */
  .status-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
    font-weight: 600;
  }

  .status-indicator.online {
    color: hsl(145 80% 45%);
  }

  .pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: currentColor;
    box-shadow: 0 0 8px currentColor;
    animation: pulse 2s infinite;
  }

  .metrics-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .metric-box {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .metric-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
  }

  .metric-value {
    font-size: 1.75rem;
    font-weight: 800;
    font-family: var(--font-sans);
  }

  .progress-bar-container {
    width: 100%;
    height: 6px;
    background-color: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
  }

  .progress-bar {
    height: 100%;
    background: linear-gradient(to right, var(--color-brand), hsl(calc(var(--accent-h) + 30) var(--accent-s) 50%));
    border-radius: 3px;
    transition: width 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .console-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-block-start: var(--spacing-xs);
  }

  .ping-response-text {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
  }

  /* Terminal Hub Widget */
  .terminal-container {
    background-color: light-dark(hsl(220 15% 92%), hsl(224 25% 6%));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    display: flex;
    flex-direction: column;
    height: 200px;
    box-shadow: inset 0 2px 8px rgba(0,0,0,0.1);
    transition: background-color 0.3s ease, border-color 0.3s ease;
  }

  .terminal-screen {
    flex-grow: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 4px;
    scrollbar-width: thin;
  }

  .terminal-line {
    word-break: break-all;
    line-height: 1.4;
  }

  .system-line {
    color: var(--text-secondary);
  }

  .command-line {
    color: var(--color-brand);
  }

  .output-line {
    color: var(--text-primary);
  }

  .error-line {
    color: hsl(0 80% 60%);
  }

  .terminal-input-form {
    display: flex;
    align-items: center;
    border-block-start: 1px solid var(--border-color);
    padding-block-start: var(--spacing-xs);
    margin-block-start: var(--spacing-xs);
  }

  .terminal-prompt {
    color: var(--color-brand);
    user-select: none;
    font-weight: bold;
  }

  .terminal-input {
    flex-grow: 1;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text-primary);
    font-family: var(--font-mono);
  }

  /* Ambient Customizer Widget */
  .customizer-intro {
    font-size: 0.9rem;
    color: var(--text-secondary);
  }

  .sliders-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .slider-box {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .slider-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 600;
  }

  .slider-value {
    color: var(--color-brand);
  }

  /* Custom range sliders */
  .custom-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
    transition: background 0.3s;
  }

  .custom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-brand);
    cursor: pointer;
    box-shadow: 0 0 10px var(--color-brand-glow);
    transition: transform 0.1s;
  }

  .custom-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
  }

  .custom-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border: none;
    border-radius: 50%;
    background: var(--color-brand);
    cursor: pointer;
    box-shadow: 0 0 10px var(--color-brand-glow);
    transition: transform 0.1s;
  }

  .custom-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
  }

  .palette-preview-box {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-block-start: var(--spacing-xs);
  }

  .preview-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
  }

  .palette-swatches {
    display: flex;
    gap: var(--spacing-xs);
  }

  .swatch {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
  }

  .swatch-primary {
    background-color: var(--color-brand);
  }

  .swatch-glow {
    background-color: var(--color-brand-glow);
  }

  .swatch-subtle {
    background-color: light-dark(hsl(var(--accent-h) var(--accent-s) 95%), hsl(var(--accent-h) var(--accent-s) 15%));
  }

  /* App Footer Styles */
  .app-footer {
    border-block-start: 1px solid var(--border-color);
    background: var(--bg-card);
    backdrop-filter: var(--backdrop-blur);
    margin-block-start: var(--spacing-xl);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.85rem;
    color: var(--text-secondary);
  }

  .footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
  }

  .footer-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
  }

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

  .indicator-dot.green {
    background-color: hsl(145 80% 45%);
    box-shadow: 0 0 6px hsl(145 80% 45%);
  }
}

@layer utilities {
  /* Keyframe Animations */
  @keyframes pulse {
    0% {
      opacity: 1;
      transform: scale(1);
    }
    50% {
      opacity: 0.4;
      transform: scale(1.1);
    }
    100% {
      opacity: 1;
      transform: scale(1);
    }
  }

  /* Media Queries for responsive styling modifications */
  @media (max-width: 768px) {
    .header-container {
      flex-direction: column;
      gap: var(--spacing-md);
    }

    .main-nav ul {
      gap: var(--spacing-sm);
    }
    
    .dashboard-grid {
      grid-template-columns: 1fr;
    }
  }

  /* Accessibility: prefers-reduced-motion styling */
  @property --animation-reduced {
    syntax: "*";
    inherits: false;
    initial-value: none;
  }

  @media (prefers-reduced-motion: reduce) {
    * {
      animation: var(--animation-reduced) !important;
      transition: none !important;
      scroll-behavior: auto !important;
    }
  }
}