/* roulang page: index */
:root {
      --bg-main: #0b0f19;
      --bg-panel: #111827;
      --bg-surface: #1e293b;
      --border-color: #1e293b;
      --border-accent: #334155;
      --emerald-accent: #10b981;
      --emerald-glow: rgba(16, 185, 129, 0.15);
      --amber-alert: #f59e0b;
      --text-title: #f8fafc;
      --text-sub: #cbd5e1;
      --text-body: #94a3b8;
    }

    body {
      background-color: var(--bg-main);
      color: var(--text-body);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }

    /* Subtle Grid Overlay */
    .grid-bg-overlay {
      background-size: 32px 32px;
      background-image: 
        linear-gradient(to right, rgba(30, 41, 59, 0.45) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(30, 41, 59, 0.45) 1px, transparent 1px);
    }

    .tech-card {
      background-color: rgba(17, 24, 39, 0.75);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .tech-card:hover {
      border-color: rgba(16, 185, 129, 0.4);
      box-shadow: 0 0 20px var(--emerald-glow);
      transform: translateY(-2px);
    }

    .status-pulse {
      animation: pulse-dot 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    }
    @keyframes pulse-dot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.15); }
    }

    .custom-scroll::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background: #334155;
      border-radius: 3px;
    }
    .custom-scroll::-webkit-scrollbar-track {
      background: #0f172a;
    }

    /* Accordion transitions */
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
    }
    .accordion-content.open {
      max-height: 500px;
      transition: max-height 0.35s ease-in-out;
    }

/* roulang page: category1 */
:root {
            --bg-main: #0b0f19;
            --bg-panel: #111827;
            --bg-surface: #1e293b;
            --border-color: #1e293b;
            --border-accent: #334155;
            --emerald-accent: #10b981;
            --emerald-glow: rgba(16, 185, 129, 0.15);
            --amber-alert: #f59e0b;
            --text-title: #f8fafc;
            --text-sub: #cbd5e1;
            --text-body: #94a3b8;
        }
        body {
            background-color: var(--bg-main);
            color: var(--text-body);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }
        .grid-bg-overlay {
            background-size: 32px 32px;
            background-image: 
                linear-gradient(to right, rgba(30, 41, 59, 0.45) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(30, 41, 59, 0.45) 1px, transparent 1px);
        }
        .tech-card {
            background-color: rgba(17, 24, 39, 0.75);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .tech-card:hover {
            border-color: rgba(16, 185, 129, 0.4);
            box-shadow: 0 0 20px var(--emerald-glow);
            transform: translateY(-2px);
        }
        .badge-online {
            background: rgba(16, 185, 129, 0.12);
            border: 1px solid rgba(16, 185, 129, 0.35);
            color: #34d399;
        }
        .badge-warning {
            background: rgba(245, 158, 11, 0.12);
            border: 1px solid rgba(245, 158, 11, 0.35);
            color: #fbbf24;
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }
        .accordion-content.open {
            max-height: 280px;
            transition: max-height 0.35s ease-in;
        }

/* roulang page: category2 */
:root {
      --bg-main: #0b0f19;
      --bg-panel: #111827;
      --bg-surface: #1e293b;
      --border-color: #1e293b;
      --border-accent: #334155;
      --emerald-accent: #10b981;
      --emerald-glow: rgba(16, 185, 129, 0.15);
      --amber-alert: #f59e0b;
      --text-title: #f8fafc;
      --text-sub: #cbd5e1;
      --text-body: #94a3b8;
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-body);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .grid-bg-overlay {
      background-size: 32px 32px;
      background-image: 
        linear-gradient(to right, rgba(30, 41, 59, 0.45) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(30, 41, 59, 0.45) 1px, transparent 1px);
    }
    .tech-card {
      background-color: rgba(17, 24, 39, 0.75);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .tech-card:hover {
      border-color: rgba(16, 185, 129, 0.4);
      box-shadow: 0 0 20px var(--emerald-glow);
      transform: translateY(-2px);
    }
    .pulse-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #10b981;
      box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      animation: pulse-ring 2s infinite;
    }
    @keyframes pulse-ring {
      0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      }
      70% {
        transform: scale(1);
        box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
      }
      100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
      }
    }