@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');
  @font-face {
    font-family: 'Syne';
    src: url('../fonts/syne.woff2') format('woff2');
    font-weight: 400 700;
    font-display: swap;
  }
  @font-face {
    font-family: 'DM Mono';
    src: url('../fonts/dmmono-400.woff2') format('woff2');
    font-weight: 400;
    font-display: swap;
  }
  @font-face {
    font-family: 'DM Mono';
    src: url('../fonts/dmmono-500.woff2') format('woff2');
    font-weight: 500;
    font-display: swap;
  }
  :root {
    --bg: #F4F6F5;
    --bg2: #FFFFFF;
    --bg3: #F8FAF9;
    --border: #E9EFEF;
    --border2: rgba(11,19,15,0.08);
    --border3: rgba(11,19,15,0.06);
    --border4: rgba(11,19,15,0.05);
    --text: #0B130F;
    --text2: #6C7E75;
    --text3: #879A91;
    --accent: #B4F105;
    --accent2: #c1f824;
    --accent-dim: rgba(180,241,5,0.15);
    --accent-dim2: rgba(180,241,5,0.05);
    --red: #EF4444;
    --blue: #6eb5ff;
    --green: #22C55E;
    --orange: #F97316;
    --sidebar-bg: #051C12;
    --sidebar-bg2: #072F1F;
    --sidebar-active: #1A3E30;
    --chip-active-bg: #051C12;
    --sidebar-text: #FFFFFF;
    --sidebar-text2: #879A91;
    --sidebar-border: rgba(255,255,255,0.1);
    --sidebar-w: 220px;
    --radius: 14px;
    --radius-lg: 24px;
    --radius-sm: 6px;
    --radius-pill: 999px;
    --shadow-sm: 0 2px 8px rgba(11,19,15,0.02);
    --shadow-md: 0 10px 30px rgba(11,19,15,0.04);
    --shadow-lg: 0 20px 50px rgba(11,19,15,0.08);
    --topbar-bg: rgba(255,255,255,0.9);
    --success-bg: #f0fdf4;
    --success-border: #bbf7d0;
    --success-text: #166534;
    --danger-bg: #fef2f2;
    --danger-border: #fecaca;
    --danger-text: #991b1b;
    --info-bg: #f0f9ff;
    --info-border: #bae6fd;
    --info-text: #075985;
    --jwt-header: #B91C1C;
    --jwt-payload: #15803D;
    --jwt-signature: #1D4ED8;
    --font-mono: 'Plus Jakarta Sans', sans-serif;
    --font-sans: 'Plus Jakarta Sans', 'Segoe UI Emoji', 'Apple Color Emoji', sans-serif;
  }

  :root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #0A0A0A;
    --bg2: #141414;
    --bg3: #1C1C1C;
    --border: #2A2A2A;
    --border2: rgba(255,255,255,0.10);
    --border3: rgba(255,255,255,0.08);
    --border4: rgba(255,255,255,0.06);
    --text: #F5F5F5;
    --text2: #A1A1A1;
    --text3: #6E6E6E;
    --accent: #A6DE04;
    --accent2: #B4F105;
    --chip-active-bg: #0F3D28;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
    --shadow-md: 0 10px 30px rgba(0,0,0,0.5);
    --shadow-lg: 0 20px 50px rgba(0,0,0,0.6);
    --topbar-bg: rgba(10,10,10,0.9);
    --success-bg: rgba(34,197,94,0.12);
    --success-border: rgba(34,197,94,0.3);
    --success-text: #4ADE80;
    --danger-bg: rgba(239,68,68,0.12);
    --danger-border: rgba(239,68,68,0.3);
    --danger-text: #F87171;
    --info-bg: rgba(110,181,255,0.12);
    --info-border: rgba(110,181,255,0.3);
    --info-text: #93C5FD;
    --jwt-header: #F87171;
    --jwt-payload: #4ADE80;
    --jwt-signature: #93C5FD;
  }

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

  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    min-height: 100vh;
    display: flex;
    font-size: 14px;
    line-height: 1.6;
  }

  /* SIDEBAR */
  .sidebar {
    width: var(--sidebar-w);
    height: 100vh;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0;
    z-index: 100;
    overflow: hidden;
  }

  .sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0 0 8px;
    scrollbar-width: thin;
    scrollbar-color: rgba(180,241,5,0.25) transparent;
  }
  .sidebar-nav::-webkit-scrollbar {
    width: 3px;
  }
  .sidebar-nav::-webkit-scrollbar-track {
    background: transparent;
  }
  .sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(180,241,5,0.25);
    border-radius: 99px;
    transition: background 0.2s;
  }
  .sidebar-nav:hover::-webkit-scrollbar-thumb {
    background: rgba(180,241,5,0.5);
  }

  .logo {
    padding: 20px 18px 16px;
    border-bottom: 1px solid var(--sidebar-border);
    margin-bottom: 12px;
  }
  .logo-mark {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .logo-icon {
    width: 30px; height: 30px;
    background: var(--accent);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px;
  }
  .logo-text {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--sidebar-text);
  }
  .logo-sub {
    font-size: 10px;
    color: var(--sidebar-text2);
    margin-top: 1px;
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
  }

  .nav-group { margin-bottom: 6px; padding: 0 10px; }
  .nav-group-label {
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--sidebar-text2);
    padding: 8px 8px 4px;
    font-family: var(--font-mono);
  }

  .nav-item {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 7px 10px;
    border-radius: 7px;
    cursor: pointer;
    color: var(--sidebar-text2);
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s;
    margin-bottom: 1px;
    border: 1px solid transparent;
    user-select: none;
  }
  .nav-item:hover { background: var(--sidebar-bg2); color: var(--sidebar-text); }
  .nav-item.active {
    background: var(--sidebar-active);
    color: var(--sidebar-text);
    border-color: var(--accent-dim);
  }
  .nav-icon {
    width: 16px;
    text-align: center;
    font-size: 13px;
    flex-shrink: 0;
  }
  .nav-badge {
    margin-left: auto;
    background: var(--sidebar-bg2);
    color: var(--sidebar-text2);
    font-size: 9px;
    font-family: var(--font-mono);
    padding: 1px 6px;
    border-radius: 20px;
  }
  .nav-item.active .nav-badge { background: var(--accent-dim); color: var(--accent); }
  .nav-item.active .nav-icon { color: var(--accent); }

  .sidebar-footer {
    margin-top: auto;
    padding: 12px 18px 0;
    border-top: 1px solid var(--sidebar-border);
  }
  .version-tag {
    font-size: 10px;
    font-family: var(--font-mono);
    color: var(--sidebar-text2);
  }

  /* MAIN */
  .main {
    margin-left: var(--sidebar-w);
    flex: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }

  .topbar {
    height: 52px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 12px;
    position: sticky;
    top: 0;
    background: var(--topbar-bg);
    backdrop-filter: blur(8px);
    z-index: 50;
  }
  .topbar-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
  }
  .topbar-sub {
    font-size: 12px;
    color: var(--text3);
    font-family: var(--font-mono);
  }
  .topbar-sep { flex: 1; }
  .copy-status {
    font-size: 11px;
    font-family: var(--font-mono);
    color: var(--accent);
    opacity: 0;
    transition: opacity 0.3s;
  }
  .copy-status.show { opacity: 1; }

  .content {
    flex: 1;
    padding: 24px;
  }

  /* TOOL PANELS */
  .tool-panel { display: none; }
  .tool-panel.active { display: block; }

  /* HOME */
  .home-hero {
    margin-bottom: 28px;
  }
  .home-greeting {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
    letter-spacing: -0.02em;
  }
  .home-greeting span { color: var(--accent); }
  .home-sub { font-size: 13px; color: var(--text2); }

  .home-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
  }
  .home-card {
    background: var(--bg2);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius);
    padding: 16px;
    cursor: pointer;
    transition: all 0.15s;
  }
  .home-card:hover {
    box-shadow: var(--shadow-md);
    background: var(--bg3);
    transform: translateY(-1px);
  }
  .home-card-icon {
    font-size: 22px;
    margin-bottom: 10px;
  }
  .home-card-title {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 3px;
  }
  .home-card-desc {
    font-size: 11px;
    color: var(--text2);
    line-height: 1.5;
  }
  .home-card-cat {
    font-size: 9px;
    font-family: var(--font-mono);
    color: var(--text3);
    margin-top: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }

  /* CARD */
  .card {
    background: var(--bg2);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 16px;
  }
  .card-title {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text2);
    margin-bottom: 14px;
    font-family: var(--font-mono);
  }

  /* FORM ELEMENTS */
  textarea, input[type=text], input[type=number], input[type=password], select {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 7px;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 12px;
    padding: 10px 12px;
    outline: none;
    transition: border 0.15s;
    resize: vertical;
  }
  textarea:focus, input:focus, select:focus {
    border-color: var(--sidebar-bg2);
    outline: 0;
    box-shadow: 0 0 0 3px rgba(7, 47, 31, 0.08);
  }
  select option { background: var(--bg2); }
  input[type=range] {
    width: 100%;
    accent-color: var(--accent);
  }
  input[type=checkbox] {
    accent-color: var(--accent);
    width: 14px; height: 14px;
    cursor: pointer;
  }

  /* BUTTONS */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius);
    line-height: 1.5;
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border2);
    background: var(--bg3);
    color: var(--text);
  }
  .btn:hover { background: var(--bg); border-color: var(--text3); }
  .btn:active { transform: scale(0.98); }
  .btn-accent {
    background: var(--accent);
    color: #0f0f11;
    border-color: transparent;
  }
  .btn-accent:hover { background: var(--accent2); }
  .btn-sm { padding: 5px 11px; font-size: 11px; }
  .btn-danger { border-color: rgba(239,68,68,0.35); color: var(--red); }
  .btn-danger:hover { background: var(--red); border-color: var(--red); color: #FFFFFF; }
  .btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
  .btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
  }

  /* LABELS */
  .label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text2);
    margin-bottom: 6px;
    display: block;
    font-family: var(--font-mono);
  }
  .form-group { margin-bottom: 14px; }
  .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

  /* OUTPUT */
  .output-box {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 7px;
    padding: 12px;
    font-family: var(--font-mono);
    font-size: 12px;
    min-height: 60px;
    white-space: pre-wrap;
    word-break: break-all;
    color: var(--text);
    line-height: 1.7;
  }
  .output-box.error { color: var(--red); }
  .output-box.neutral { color: var(--text); }

  /* BADGE */
  .badge {
    display: inline-block;
    font-size: 9px;
    font-family: var(--font-mono);
    padding: 2px 7px;
    border-radius: 20px;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }
  .badge-green { background: var(--success-bg); color: var(--success-text); }
  .badge-red { background: rgba(255,107,107,0.12); color: var(--red); }
  .badge-blue { background: rgba(110,181,255,0.12); color: var(--blue); }

  /* CHIPS */
  .chip-group { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }
  .chip {
    padding: 5px 12px;
    border-radius: 20px;
    border: 1px solid var(--border2);
    font-size: 11px;
    font-family: var(--font-mono);
    cursor: pointer;
    color: var(--text2);
    transition: all 0.15s;
    background: var(--bg2);
  }
  .chip:hover { background: var(--bg3); border-color: var(--border2); color: var(--text); }
  .chip.active { background: var(--chip-active-bg); border-color: var(--chip-active-bg); color: var(--sidebar-text); }

  /* STATS ROW */
  .stats-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 10px; }
  .stat-chip {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 7px;
    padding: 8px 14px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text2);
  }
  .stat-chip strong { color: var(--text); font-size: 14px; display: block; }

  /* DIFF */
  .diff-add { background: var(--success-bg); color: var(--success-text); display: inline; }
  .diff-del { background: rgba(255,107,107,0.12); color: var(--red); text-decoration: line-through; display: inline; }

  /* LINE-NUMBERED EDITOR */
  .lined-editor {
    display: flex;
    border: 1px solid var(--border);
    border-radius: 7px;
    overflow: hidden;
    background: var(--bg);
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.6;
  }
  .lined-editor .line-nums {
    min-width: 38px;
    padding: 8px 6px;
    background: var(--bg3);
    border-right: 1px solid var(--border);
    color: var(--text2);
    text-align: right;
    user-select: none;
    overflow: hidden;
    white-space: pre;
    flex-shrink: 0;
  }
  .lined-editor textarea {
    flex: 1;
    border: none;
    border-radius: 0;
    background: transparent;
    padding: 8px 10px;
    resize: none;
    outline: none;
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.6;
    color: var(--text);
    overflow-y: auto;
  }

  /* QR */
  #qr-output { display: flex; align-items: center; justify-content: center; min-height: 160px; }
  #qr-output canvas, #qr-output img { border-radius: 8px; }

  /* STRENGTH BAR */
  .strength-bar { height: 4px; border-radius: 2px; background: var(--bg); margin-top: 8px; overflow: hidden; }
  .strength-fill { height: 100%; border-radius: 2px; transition: all 0.3s; }

  /* SCROLLBAR */
  ::-webkit-scrollbar { width: 5px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

  /* ANIMATIONS */
  @keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
  .tool-panel.active { animation: fadeIn 0.2s ease; }

  /* REGEX */
  .regex-highlight { background: rgba(180,241,5,0.35); border-radius: 2px; }
  .match-count { font-size: 11px; font-family: var(--font-mono); color: var(--text2); margin-top: 6px; }

  /* JWT */
  .jwt-part { margin-bottom: 12px; }
  .jwt-part-label { font-size: 10px; font-family: var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 6px; }
  .jwt-part-label.header { color: var(--jwt-header); }
  .jwt-part-label.payload { color: var(--jwt-payload); }
  .jwt-part-label.signature { color: var(--jwt-signature); }

  .divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 20px 0;
  }

  /* DATA TABLE — mengikuti .table-custom template Spark Admin */
  .data-table-wrap {
    background: var(--bg2);
    border-radius: 18px;
    border: 1px solid var(--border3);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    width: 100%;
  }
  .data-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 12px;
  }
  .data-table th,
  .data-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border4);
    white-space: nowrap;
  }
  .data-table th {
    background: var(--bg3);
    color: var(--text3);
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-align: left;
    border-bottom: 1px solid var(--border2);
  }
  .data-table th.num,
  .data-table td.num {
    text-align: right;
  }
  .data-table tbody tr {
    transition: background-color 0.2s ease-in-out;
  }
  .data-table tbody tr:hover {
    background: rgba(180,241,5,0.03);
  }
  .data-table tbody tr:last-child td {
    border-bottom: none;
  }