:root {
    --bg: #0a0c0f;
    --surface: #0f1318;
    --surface2: #23133a;
    --surface3: #23133a;
    --border: #3a1c63;
    --border2: #5e309d;
    --amber: #883CF0;
    --amber-dim: #873cf03d;
    --amber-glow: rgba(245,158,11,0.12);
    --amber-soft: rgba(245,158,11,0.06);
    --cyan: #d8e6e9;
    --cyan-soft: rgba(6,182,212,0.08);
    --green: #10b981;
    --green-soft: rgba(16,185,129,0.1);
    --red: #f43f5e;
    --red-soft: rgba(244,63,94,0.1);
    --text: #e2e8f0;
    --text-dim: #d6d6d6;
    --text-faint: #d6d6d6;
  }

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

  .delinea-training-guide {
    background: #191127;
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
  }

  /* GRID BACKGROUND */
  .delinea-training-guide::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(var(--border) 1px, transparent 1px),
      linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.25;
    pointer-events: none;
    z-index: 0;
  }

  /* LAYOUT */
  .shell {
    display: grid;
    grid-template-columns: 260px 1fr;
    grid-template-rows: 56px 1fr;
    height: 100vh;
    position: relative;
    z-index: 1;
  }

  /* TOP BAR */
  .topbar {
    grid-column: 1 / -1;
    background: #180f26;
    border-bottom: 1px solid var(--border2);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 16px;
    position: sticky;
    top: 0;
    z-index: 1;
  }

  .topbar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .topbar-logo .icon {
    width: 28px;
    height: 28px;
    background: var(--amber);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
  }

  .topbar-logo .title {
    
    font-size: 13px;
    font-weight: 600;
    color: var(--amber);
    
  }

  .topbar-logo .subtitle {
    font-size: 11px;
    color: var(--text-dim);
    
  }

  .topbar-sep { width: 1px; height: 24px; background: var(--border2); margin: 0 8px; }

  .progress-bar-wrap {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .progress-label {
    
    font-size: 11px;
    color: var(--text-dim);
    white-space: nowrap;
  }

  .progress-track {
    flex: 1;
    max-width: 200px;
    height: 4px;
    background: #282035;
    border-radius: 2px;
    overflow: hidden;
  }

  .progress-fill {
    height: 100%;
    background: #883CF0;
    border-radius: 2px;
    transition: width 0.5s cubic-bezier(0.4,0,0.2,1);
    width: 0%;
  }

  .progress-pct {
    
    font-size: 11px;
    color: var(--amber);
    min-width: 32px;
  }

  /* SIDEBAR */
  .sidebar {
    background: #180f26;
    border-right: 1px solid var(--border2);
    overflow-y: auto;
    padding: 20px 0;
  }

  .sidebar::-webkit-scrollbar { width: 4px; }
  .sidebar::-webkit-scrollbar-track { background: transparent; }
  .sidebar::-webkit-scrollbar-thumb { background: #873cf015; border-radius: 2px; }

  .nav-section {
    padding: 0 12px 8px;
  }

  .nav-section-label {
    font-size: 9px;
    font-weight: 600;
    color: var(--text-faint);
    text-transform: uppercase;
    padding: 8px 12px 4px;
  }

  .nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
    margin-bottom: 1px;
    border: 1px solid transparent;
  }

  .nav-item:hover {
    background: #23133a9f;
    border-color: var(--border);
  }

  .nav-item.active {
    background: #23133a;
    border-color: #3a1c63;
  }

  .nav-item .num {
    
    font-size: 10px;
    color: var(--text-faint);
    min-width: 18px;
  }

  .nav-item.active .num { color: var(--amber); }

  .nav-item .label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dim);
    flex: 1;
  }

  .nav-item.active .label { color: var(--amber); }

  .nav-item .check {
    width: 16px;
    height: 16px;
    border: 1px solid var(--border2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    flex-shrink: 0;
    transition: all 0.2s;
  }

  .nav-item.completed .check {
    background: var(--green);
    border-color: var(--green);
    color: #000;
  }

  /* MAIN CONTENT */
  .main {
    overflow-y: auto;
    padding: 40px 48px;
  }

  .main::-webkit-scrollbar { width: 6px; }
  .main::-webkit-scrollbar-track { background: transparent; }
  .main::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

  .section {
    display: none;
    animation: fadeIn 0.3s ease;
    max-width: 860px;
  }

  .section.active { display: block; }

  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* SECTION HEADERS */
  .section-eyebrow {
    
    font-size: 11px;
    color: var(--amber);
    
    text-transform: uppercase;
    margin-bottom: 8px;
  }

  .section-title {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #d7d1e0 30%, #3e354b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .section-intro {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-dim);
    margin-bottom: 32px;
    max-width: 680px;
  }

  /* CONTENT CARDS */
  .card {
    background: var(--surface2);
    border: 1px solid var(--border2);
    border-radius: 10px;
    padding: 24px;
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
  }

  .card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--amber), transparent);
  }

  .card.cyan::before { background: linear-gradient(90deg, #883CF0, transparent); }
  .card.green::before { background: linear-gradient(90deg, #883CF0, transparent); }

  .card-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .card-title .tag {
    
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 3px;
    background: var(--amber-glow);
    color: var(--amber);
    border: 1px solid rgba(245,158,11,0.2);
    font-weight: 400;
  }

  .card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-dim);
  }

  /* CALLOUT BOXES */
  .callout {
    display: flex;
    gap: 14px;
    padding: 16px;
    border-radius: 8px;
    margin: 16px 0;
    font-size: 13px;
    line-height: 1.6;
  }

  .callout.info { background: #1f1232; border: 1px solid #3a1c63; color: #cfe5e8; }
  .callout.warning { background: var(--amber-soft); border: 1px solid rgba(253, 249, 241, 0.2); color: #fde68a; }
  .callout.success { background: var(--green-soft); border: 1px solid rgba(16,185,129,0.2); color: #6ee7b7; }
  .callout.danger { background: var(--red-soft); border: 1px solid rgba(244,63,94,0.2); color: #fda4af; }

  .callout-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }

  /* STEP LIST */
  .steps { list-style: none; }

  .step {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    animation: none;
  }

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

  .step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--surface3);
    border: 1px solid var(--border2);
    display: flex;
    align-items: center;
    justify-content: center;
    
    font-size: 12px;
    font-weight: 600;
    color: var(--amber);
    flex-shrink: 0;
    margin-top: 2px;
  }

  .step-content h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 6px;
  }

  .step-content p {
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.6;
  }

  /* CODE BLOCKS */
  .code-block {
    background: var(--bg);
    border: 1px solid var(--border2);
    border-radius: 8px;
    padding: 16px;
    margin: 12px 0;
    
    font-size: 12px;
    line-height: 1.7;
    color: #94a3b8;
    overflow-x: auto;
  }

  .code-block .kw { color: var(--amber); }
  .code-block .str { color: var(--green); }
  .code-block .cm { color: var(--text-faint); }
  .code-block .hl { color: var(--cyan); }

  /* PERMISSION TABLE */
  .perm-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    margin: 16px 0;
  }

  .perm-table th {
    text-align: left;
    padding: 10px 14px;
    background: var(--surface3);
    border: 1px solid var(--border2);
    
    font-size: 11px;
    color: var(--text-dim);
    
    font-weight: 400;
  }

  .perm-table td {
    padding: 10px 14px;
    border: 1px solid var(--border);
    color: var(--text-dim);
    line-height: 1.5;
  }

  .perm-table tr:hover td { background: var(--surface2); }

  .perm-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 3px;
    
    font-size: 10px;
    font-weight: 600;
  }

  .badge-view { background: #1f1232; color: var(--cyan); border: 1px solid #3a1c63; }
  .badge-edit { background: rgba(245,158,11,0.12); color: var(--amber); border: 1px solid rgba(245,158,11,0.25); }
  .badge-owner { background: rgba(16,185,129,0.12); color: var(--green); border: 1px solid rgba(16,185,129,0.25); }
  .badge-deny { background: rgba(244,63,94,0.12); color: var(--red); border: 1px solid rgba(244,63,94,0.25); }
  .badge-none { background: var(--surface3); color: var(--text-faint); border: 1px solid var(--border); }

  /* INTERACTIVE SIMULATOR */
  .simulator {
    background: var(--bg);
    border: 1px solid var(--border2);
    border-radius: 10px;
    overflow: hidden;
    margin: 24px 0;
  }

  .sim-header {
    background: var(--surface3);
    border-bottom: 1px solid var(--border2);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .sim-dot {
    width: 10px; height: 10px; border-radius: 50%;
  }

  .sim-title {
    
    font-size: 12px;
    color: var(--text-dim);
    margin-left: 4px;
  }

  .sim-body { padding: 24px; }

  /* FOLDER TREE */
  .folder-tree {
    
    font-size: 13px;
  }

  .tree-node {
    margin: 2px 0;
  }

  .tree-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
    border: 1px solid transparent;
  }

  .tree-row:hover { background: var(--surface2); border-color: var(--border); }
  .tree-row.selected { background: var(--amber-soft); border-color: var(--amber-dim); }

  .tree-indent { padding-left: 20px; }

  .tree-icon { font-size: 14px; }
  .tree-name { color: var(--text); font-weight: 500; }
  .tree-inherited {
    font-size: 10px;
    color: var(--text-faint);
    margin-left: auto;
    padding: 1px 6px;
    border-radius: 3px;
    border: 1px solid var(--border);
  }

  .tree-explicit {
    font-size: 10px;
    color: var(--amber);
    margin-left: auto;
    padding: 1px 6px;
    border-radius: 3px;
    border: 1px solid rgba(245,158,11,0.3);
    background: var(--amber-glow);
  }

  /* PERMISSION PANEL */
  .perm-panel {
    background: var(--surface2);
    border: 1px solid var(--border2);
    border-radius: 8px;
    padding: 16px;
    min-height: 200px;
  }

  .perm-panel-title {
    
    font-size: 11px;
    color: var(--text-dim);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .perm-entry {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 6px;
    margin-bottom: 6px;
    background: var(--surface3);
    border: 1px solid var(--border);
    font-size: 13px;
    animation: slideIn 0.2s ease;
  }

  @keyframes slideIn {
    from { opacity: 0; transform: translateX(-8px); }
    to { opacity: 1; transform: translateX(0); }
  }

  .perm-entry .entity { flex: 1; color: var(--text); }
  .perm-entry .type-badge {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 3px;
    
  }

  .type-group { background: #1f1232; color: var(--cyan); }
  .type-user { background: rgba(245,158,11,0.1); color: var(--amber); }
  .type-role { background: rgba(167,139,250,0.1); color: #a78bfa; }

  /* QUIZ */
  .quiz-q {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.5;
  }

  .quiz-options {
    display: grid;
    gap: 10px;
    margin-bottom: 24px;
  }

  .quiz-opt {
    padding: 14px 18px;
    border-radius: 8px;
    border: 1px solid var(--border2);
    background: var(--surface2);
    cursor: pointer;
    font-size: 14px;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-dim);
  }

  .quiz-opt:hover:not(.disabled) {
    background: var(--surface3);
    border-color: var(--amber-dim);
    color: var(--text);
  }

  .quiz-opt.correct {
    border-color: #77b255;
    background: #77b25520;
    color: #60c090;
  }

  .quiz-opt.incorrect {
    border-color: #dc143c;
    background: #dc143c2b;
    color:#ff7a90;
  }

  .quiz-opt .opt-letter {
    
    font-size: 12px;
    width: 24px;
    height: 24px;
    border-radius: 4px;
    background: var(--surface3);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: 1px solid var(--border2);
  }

  .quiz-feedback {
    padding: 14px 18px;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.6;
    display: none;
  }

  .quiz-feedback.show { display: block; animation: fadeIn 0.3s ease; }
  .quiz-feedback.correct { background: #77b25520;
    border: 1px solid #77b255;
    color: #60c090; }
  .quiz-feedback.incorrect { background: #dc143c2b;
    border: 1px solid #dc143c;
    color: #ff7a90; }

  /* BUTTONS */
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 7px;
    
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s;
    border: none;
    
  }

  .btn-primary {
    background: var(--amber);
    color: #000;
  }

  .btn-primary:hover {
    background: #883cf0e0;
    transform: translateY(-1px);
    box-shadow: 0 4px 20px #be52e50f;
  }

  .btn-ghost {
    background: var(--surface2);
    color: var(--text-dim);
    border: 1px solid var(--border2);
  }

  .btn-ghost:hover {
    background: var(--surface3);
    color: var(--text);
    border-color: var(--border2);
  }

  .btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none !important; }

  /* NAV FOOTER */
  .section-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
  }

  /* GRID LAYOUT */
  .grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .grid-sim {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
  }

  /* HIGHLIGHT TEXT */
  .hl-amber { color: var(--amber); font-weight: 700; }
  .hl-cyan { color: var(--cyan); font-weight: 700; }
  .hl-green { color: var(--green); font-weight: 700; }

  /* BADGE ROW */
  .badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 12px 0;
  }

  .role-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    border: 1px solid;
  }

  /* INHERITANCE DIAGRAM */
  .inherit-diagram {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 20px 0;
  }

  .inherit-node {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-radius: 8px;
    background: var(--surface3);
    border: 1px solid var(--border2);
    font-size: 13px;
    font-weight: 600;
    position: relative;
    transition: all 0.2s;
  }

  .inherit-node:hover { border-color: var(--amber-dim); }

  .inherit-arrow {
    display: flex;
    align-items: center;
    padding: 4px 0 4px 24px;
    
    font-size: 11px;
    color: var(--text-faint);
    gap: 8px;
  }

  .inherit-arrow::before {
    content: '';
    width: 1px;
    height: 24px;
    background: var(--border2);
    margin-right: 8px;
    display: block;
  }

  .node-override {
    margin-left: auto;
    font-size: 10px;
    
    padding: 2px 8px;
    border-radius: 3px;
    color: var(--red);
    background: var(--red-soft);
    border: 1px solid rgba(244,63,94,0.2);
  }

  .node-inherit {
    margin-left: auto;
    font-size: 10px;
    
    padding: 2px 8px;
    border-radius: 3px;
    color: var(--text-faint);
    background: var(--surface);
    border: 1px solid var(--border);
  }

  /* BEST PRACTICES */
  .bp-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .bp-item {
    display: flex;
    gap: 14px;
    padding: 14px 18px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    line-height: 1.6;
    transition: border-color 0.15s;
  }

  .bp-item:hover { border-color: var(--border2); }

  .bp-icon { font-size: 18px; flex-shrink: 0; }
  .bp-text { color: var(--text-dim); }
  .bp-text strong { color: var(--text); display: block; margin-bottom: 3px; font-size: 14px; }

  /* COMPLETION BANNER */
  .completion-banner {
    text-align: center;
    padding: 48px 32px;
    background: linear-gradient(135deg, rgba(245,158,11,0.05), rgba(16,185,129,0.05));
    border: 1px solid var(--border2);
    border-radius: 12px;
  }

  .completion-icon {
    font-size: 48px;
    margin-bottom: 16px;
  }

  .completion-title {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--amber), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .completion-text {
    font-size: 15px;
    color: var(--text-dim);
    max-width: 500px;
    margin: 0 auto 24px;
    line-height: 1.7;
  }

  .cert-card {
    display: inline-block;
    background: #2a1647;
    border: 1px solid var(--amber-dim);
    border-radius: 10px;
    padding: 20px 40px;
    margin-top: 16px;
  }

  .cert-label {
    
    font-size: 10px;
    color: var(--amber);
    
    text-transform: uppercase;
    margin-bottom: 6px;
  }

  .cert-name {
    font-size: 18px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 4px;
  }

  .cert-sub {
    font-size: 12px;
    color: var(--text-faint);
    
  }
  
@media(max-width:767px){

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

  .sidebar{
    display: none;
  }
}