/* ==========================================================================
   CSS Cascade Layers & Order Upfront
   ========================================================================== */
@layer reset, base, theme, components, utilities;

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

  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
  }

  img, picture, svg, video {
    display: block;
    max-width: 100%;
  }

  input, button, textarea, select {
    font: inherit;
  }

  a {
    text-decoration: none;
    color: inherit;
  }
}

/* ==========================================================================
   Theme Layer (Design Tokens & Color Modes)
   ========================================================================== */
@layer theme {
  :root {
    /* Tier 1: Brand / Literal Tokens */
    --color-indigo: #6366f1;
    --color-violet: #a855f7;
    --color-pink: #ec4899;
    --color-emerald: #10b981;
    --color-red: #ef4444;
    --color-slate-50: #f8fafc;
    --color-slate-300: #cbd5e1;
    --color-slate-400: #94a3b8;
    --color-slate-800: #1e293b;
    --color-slate-900: #0f172a;
    --color-black: #050409;
    
    /* Font family */
    --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Layout properties */
    --radius-s: 8px;
    --radius-m: 12px;
    --radius-l: 16px;
    --radius-full: 9999px;
    --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s ease;
    
    /* Default is Dark-scheme (since it looks premium and matches self-hosted environments) */
    color-scheme: dark light;
    
    /* Tier 2 & 3: Semantic variables */
    --bg-main: var(--color-black);
    --text-main: var(--color-slate-50);
    --text-muted: var(--color-slate-400);
    
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.07);
    --glass-border-hover: rgba(99, 102, 241, 0.35);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --glass-blur: 16px;
    
    --accent: var(--color-indigo);
    --accent-glow: rgba(99, 102, 241, 0.15);
    
    --status-online: var(--color-emerald);
    --status-offline: var(--color-red);
  }

  /* Automatically adapt to system light-scheme or light color preference */
  @media (prefers-color-scheme: light) {
    :root {
      --bg-main: #f1f5f9;
      --text-main: var(--color-slate-900);
      --text-muted: #64748b;
      
      --glass-bg: rgba(255, 255, 255, 0.65);
      --glass-border: rgba(99, 102, 241, 0.1);
      --glass-border-hover: rgba(99, 102, 241, 0.4);
      --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.06);
      
      --accent: var(--color-indigo);
      --accent-glow: rgba(99, 102, 241, 0.08);
    }
  }

  /* Focus rings selection rules */
  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
  }
}

/* ==========================================================================
   Base Layer (Body & Typography)
   ========================================================================== */
@layer base {
  body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.5;
    transition: background-color var(--transition-smooth);
  }

  h1, h2, h3, h4 {
    font-weight: 600;
    text-wrap: balance; /* Elegant headline wrapping */
  }

  p {
    text-wrap: pretty; /* Long-form text wrapping */
  }

  /* Custom Scrollbar for premium feel */
  ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }
  ::-webkit-scrollbar-track {
    background: transparent;
  }
  ::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
  }
  ::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
  }
}

/* ==========================================================================
   Components Layer
   ========================================================================== */
@layer components {
  /* Glowing Mesh Gradient Background Orbs */
  .background-orbs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
  }

  .orb {
    position: absolute;
    border-radius: var(--radius-full);
    filter: blur(140px);
    opacity: 0.35;
    mix-blend-mode: screen;
    animation: floatOrb 30s infinite alternate ease-in-out;
  }

  .orb-1 {
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, var(--color-indigo) 0%, rgba(99, 102, 241, 0) 70%);
    top: -10%;
    left: -5%;
  }

  .orb-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-violet) 0%, rgba(168, 85, 247, 0) 70%);
    bottom: -10%;
    right: -5%;
    animation-delay: -8s;
  }

  .orb-3 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, var(--color-pink) 0%, rgba(236, 72, 153, 0) 70%);
    top: 35%;
    left: 45%;
    animation-delay: -16s;
  }

  @keyframes floatOrb {
    0% {
      transform: translate(0, 0) scale(1);
    }
    50% {
      transform: translate(60px, 80px) scale(1.1);
    }
    100% {
      transform: translate(-40px, -60px) scale(0.95);
    }
  }

  /* Main Container Layout */
  .app-container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 3rem;
  }

  /* Header */
  .app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 1rem;
  }

  .brand-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-indigo), var(--color-violet));
    border-radius: var(--radius-m);
    color: white;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
  }

  .brand-logo i {
    width: 24px;
    height: 24px;
  }

  .brand-text h1 {
    font-size: 1.75rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, var(--text-main), var(--color-slate-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .brand-text span {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  /* User Widget */
  .user-widget {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem 0.5rem 0.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-full);
    box-shadow: var(--glass-shadow);
    transition: opacity var(--transition-fast) ease, transform var(--transition-fast) ease;
  }

  .user-widget.hidden {
    opacity: 0;
    transform: translateY(-5px);
    pointer-events: none;
  }

  .user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-violet), var(--color-pink));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
  }

  .user-info {
    display: flex;
    flex-direction: column;
  }

  .user-welcome {
    font-size: 0.7rem;
    color: var(--text-muted);
    line-height: 1;
  }

  .user-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
  }

  .btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    border: none;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
  }

  .btn-icon:hover {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-red);
  }

  .btn-icon i {
    width: 16px;
    height: 16px;
  }

  /* Controls Section (Search & Filter) */
  .controls-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  /* Search Input Wrapper */
  .search-wrapper {
    position: relative;
    width: 100%;
    max-width: 500px;
    display: flex;
    align-items: center;
  }

  .search-icon {
    position: absolute;
    left: 1.25rem;
    color: var(--text-muted);
    pointer-events: none;
    width: 20px;
    height: 20px;
    transition: color var(--transition-fast);
  }

  #search-input {
    width: 100%;
    padding: 1rem 3rem 1rem 3.25rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-l);
    color: var(--text-main);
    font-size: 1rem;
    box-shadow: var(--glass-shadow);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  }

  #search-input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
  }

  #search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
  }

  #search-input:focus + .search-icon {
    color: var(--accent);
  }

  .btn-clear {
    position: absolute;
    right: 1.25rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    transition: color var(--transition-fast), background var(--transition-fast);
  }

  .btn-clear:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.08);
  }

  .btn-clear.hidden {
    display: none;
  }

  /* Category Filter Chips */
  .category-filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
  }

  .filter-chip {
    padding: 0.5rem 1.25rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur));
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  }

  .filter-chip:hover {
    color: var(--text-main);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
  }

  .filter-chip.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
    box-shadow: 0 0 15px var(--accent-glow);
  }

  /* Service Grid Layout */
  .services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
  }

  /* Premium Card Design */
  .card {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1.75rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-l);
    box-shadow: var(--glass-shadow);
    transition: border-color var(--transition-smooth), transform var(--transition-smooth), box-shadow var(--transition-smooth);
    overflow: hidden;
  }

  /* Glowing hover effect card */
  .card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(800px circle at var(--mouse-x, 0) var(--mouse-y, 0), rgba(255, 255, 255, 0.05), transparent 40%);
    z-index: 1;
    pointer-events: none;
  }

  .card:hover {
    transform: translateY(-4px);
    border-color: var(--glass-border-hover);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.4), 0 0 25px var(--accent-glow);
  }

  .card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    z-index: 2;
  }

  .card-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-m);
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent);
    border: 1px solid rgba(255, 255, 255, 0.03);
    transition: transform var(--transition-smooth), background var(--transition-smooth);
  }

  .card:hover .card-icon-wrapper {
    transform: scale(1.1) rotate(2deg);
    background: rgba(99, 102, 241, 0.1);
  }

  .card-icon-wrapper i {
    width: 24px;
    height: 24px;
  }

  /* Status Indicator dot */
  .status-indicator {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.2);
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.03);
  }

  .status-dot {
    width: 6px;
    height: 6px;
    border-radius: var(--radius-full);
    background-color: var(--text-muted);
  }

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

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

  /* Card content details */
  .card-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 2;
  }

  .card-details h3 {
    font-size: 1.25rem;
    color: var(--text-main);
  }

  .card-details p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.4;
  }

  /* Card footer area */
  .card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    z-index: 2;
    margin-top: auto;
  }

  .card-tag {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.2rem 0.75rem;
    border-radius: var(--radius-full);
  }

  .card-link {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent);
    transition: color var(--transition-fast), gap var(--transition-fast);
  }

  .card:hover .card-link {
    color: var(--color-violet);
    gap: 0.5rem;
  }

  .card-link i {
    width: 16px;
    height: 16px;
  }

  /* Empty State */
  .empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 4rem 2rem;
    background: var(--glass-bg);
    border: 1px dashed var(--glass-border);
    border-radius: var(--radius-l);
    color: var(--text-muted);
    text-align: center;
  }

  .empty-state i {
    width: 48px;
    height: 48px;
    color: var(--text-muted);
    opacity: 0.5;
  }

  .empty-state.hidden {
    display: none;
  }

  /* Error Connection Overlay */
  .error-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(5, 4, 9, 0.85);
    backdrop-filter: blur(20px);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    transition: opacity var(--transition-smooth) ease;
  }

  .error-overlay.hidden {
    opacity: 0;
    pointer-events: none;
  }

  .error-card {
    max-width: 440px;
    width: 100%;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(239, 68, 68, 0.2);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(239, 68, 68, 0.05);
    border-radius: var(--radius-l);
    padding: 2.5rem 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
  }

  .error-icon {
    width: 64px;
    height: 64px;
    color: var(--color-red);
    filter: drop-shadow(0 0 10px rgba(239, 68, 68, 0.3));
  }

  .error-card h2 {
    font-size: 1.5rem;
  }

  .error-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.5;
  }

  .btn-primary {
    width: 100%;
    padding: 0.85rem 1.5rem;
    border: none;
    border-radius: var(--radius-m);
    background: linear-gradient(135deg, var(--color-indigo), var(--color-violet));
    color: white;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
  }

  .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    filter: brightness(1.1);
  }

  .btn-primary:active {
    transform: translateY(1px);
  }

  /* Skeleton Loading Styles */
  .skeleton-card {
    height: 200px;
    background: rgba(255, 255, 255, 0.02);
    border-color: rgba(255, 255, 255, 0.03);
    pointer-events: none;
    animation: skeletonPulse 1.8s infinite ease-in-out;
  }

  @keyframes skeletonPulse {
    0% {
      opacity: 0.5;
    }
    50% {
      opacity: 0.8;
      background: rgba(255, 255, 255, 0.05);
    }
    100% {
      opacity: 0.5;
    }
  }

  /* Footer Styling */
  .app-footer {
    margin-top: auto;
    text-align: center;
    padding: 1.5rem 0;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid rgba(255, 255, 255, 0.02);
  }
}

/* ==========================================================================
   Utilities Layer
   ========================================================================== */
@layer utilities {
  .hidden {
    display: none !important;
  }
}

/* ==========================================================================
   Media Queries & Responsiveness
   ========================================================================== */
@media (max-width: 768px) {
  .app-container {
    padding: 1.5rem 1rem;
    gap: 2rem;
  }

  .app-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .user-widget {
    width: 100%;
    justify-content: space-between;
  }

  .search-wrapper {
    max-width: 100%;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }
}

/* Hover coarse pointer modifications */
@media (pointer: coarse) {
  .filter-chip, .card {
    min-height: 44px; /* Ensure better touch target sizes on mobile */
  }
  
  .card:hover {
    transform: none; /* Disable card translate hover on mobile to prevent jitter */
  }
}

/* ==========================================================================
   Forced Colors Mode / High Contrast Fallbacks
   ========================================================================== */
@media (forced-colors: active) {
  :root {
    --glass-bg: transparent;
    --glass-border: CanvasText;
    --glass-shadow: none;
    --accent: LinkText;
  }

  .card, .user-widget, #search-input, .filter-chip {
    border: 2px solid CanvasText !important;
    background: Canvas !important;
  }

  .card-icon-wrapper {
    border: 1px solid CanvasText;
    background: transparent !important;
  }
  
  .user-avatar {
    border: 1px solid CanvasText;
    background: transparent !important;
    color: CanvasText !important;
  }

  .btn-primary {
    border: 2px solid ButtonText !important;
    background: ButtonFace !important;
    color: ButtonText !important;
  }

  .status-dot {
    background-color: CanvasText !important;
    border: 1px solid CanvasText;
  }

  :focus-visible {
    outline: 3px solid Highlight !important;
  }
}