:root {
    --bg: #0a0c10;
    --surface: #111418;
    --surface2: #181c22;
    --border: #252a34;
    --accent: #00e5a0;
    --accent2: #0066ff;
    --warn: #ff6b35;
    --danger: #ff3b5c;
    --text: #e8eaf0;
    --text-muted: #6b7385;
    --text-dim: #3d4455;
    --mono: 'Space Mono', monospace;
    --sans: 'Sora', sans-serif;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  body { background: var(--bg); color: var(--text); font-family: var(--sans); min-height: 100vh; overflow-x: hidden; }
  #loginScreen { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); }

  /* SCROLLBAR */
  ::-webkit-scrollbar { width: 4px; }
  ::-webkit-scrollbar-track { background: var(--bg); }
  ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

  /* HEADER */
  .header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 32px; border-bottom: 1px solid var(--border);
    background: rgba(10,12,16,0.95); backdrop-filter: blur(12px);
    position: sticky; top: 0; z-index: 100;
  }
  .logo { display: flex; align-items: center; gap: 12px; }
  .logo-mark {
    width: 36px; height: 36px; background: var(--accent);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    display: flex; align-items: center; justify-content: center;
  }
  .logo-text { font-family: var(--mono); font-size: 15px; font-weight: 700; letter-spacing: 0.1em; }
  .logo-text span { color: var(--accent); }
  .logo-sub { font-size: 10px; color: var(--text-muted); letter-spacing: 0.15em; text-transform: uppercase; }
  .header-right { display: flex; align-items: center; gap: 16px; }
  .live-clock { font-family: var(--mono); font-size: 22px; color: var(--accent); letter-spacing: 0.05em; }
  .live-date { font-size: 11px; color: var(--text-muted); text-align: right; letter-spacing: 0.08em; }

  /* NAV */
  .nav { display: flex; gap: 4px; padding: 12px 32px; border-bottom: 1px solid var(--border); background: var(--surface); }
  .nav-btn {
    padding: 8px 18px; border-radius: 6px; border: none; background: transparent;
    color: var(--text-muted); font-family: var(--sans); font-size: 13px; font-weight: 600;
    cursor: pointer; transition: all 0.2s; letter-spacing: 0.04em;
  }
  .nav-btn:hover { color: var(--text); background: var(--surface2); }
  .nav-btn.active { color: var(--accent); background: rgba(0,229,160,0.08); border: 1px solid rgba(0,229,160,0.2); }
  .nav-btn.danger-btn { color: var(--danger); }
  .nav-btn.danger-btn:hover { background: rgba(255,59,92,0.1); }

  /* VIEWS */
  .view { display: none; padding: 32px; max-width: 1200px; margin: 0 auto; width: 100%; box-sizing: border-box; }
  .view.active { display: block; }

  /* CARDS */
  .card {
    background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
    padding: 24px; margin-bottom: 20px; max-width: 100%; overflow: hidden;
  }
  .card-title {
    font-family: var(--mono); font-size: 11px; letter-spacing: 0.15em;
    text-transform: uppercase; color: var(--text-muted); margin-bottom: 16px;
    display: flex; align-items: center; gap: 8px;
  }
  .card-title::before { content: ''; width: 4px; height: 4px; background: var(--accent); border-radius: 50%; display: block; }

  /* PUNCH CLOCK */
  .punch-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
  .punch-display {
    background: var(--surface2); border: 1px solid var(--border); border-radius: 10px;
    padding: 32px; text-align: center;
  }
  .punch-time { font-family: var(--mono); font-size: 48px; color: var(--accent); letter-spacing: 0.05em; line-height: 1; }
  .punch-date { font-size: 13px; color: var(--text-muted); margin-top: 8px; }
  .status-badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 14px; border-radius: 20px; font-size: 12px; font-weight: 600;
    margin-top: 16px; letter-spacing: 0.05em;
  }
  .status-badge.in { background: rgba(0,229,160,0.12); color: var(--accent); border: 1px solid rgba(0,229,160,0.25); }
  .status-badge.out { background: rgba(107,115,133,0.12); color: var(--text-muted); border: 1px solid var(--border); }
  .status-badge.break { background: rgba(255,107,53,0.12); color: var(--warn); border: 1px solid rgba(255,107,53,0.25); }
  .dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; animation: pulse 2s infinite; }
  @keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

  /* BUTTONS */
  .btn {
    padding: 14px 28px; border-radius: 8px; border: none; cursor: pointer;
    font-family: var(--sans); font-size: 14px; font-weight: 700; letter-spacing: 0.06em;
    transition: all 0.2s; text-transform: uppercase;
  }
  .btn-primary { background: var(--accent); color: #0a0c10; }
  .btn-primary:hover { background: #00ffb3; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(0,229,160,0.3); }
  .btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
  .btn-secondary:hover { border-color: var(--text-muted); background: var(--surface2); }
  .btn-warn { background: var(--warn); color: white; }
  .btn-warn:hover { background: #ff8c5a; }
  .btn-danger { background: var(--danger); color: white; }
  .btn-danger:hover { background: #ff6070; }
  .btn-blue { background: var(--accent2); color: white; }
  .btn-blue:hover { background: #3385ff; }
  .btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none !important; }
  .btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 16px; }

  /* FORM */
  .form-group { margin-bottom: 16px; }
  label { display: block; font-size: 12px; font-weight: 600; color: var(--text-muted); margin-bottom: 6px; letter-spacing: 0.08em; text-transform: uppercase; }
  input:not([type="checkbox"]):not([type="radio"]), select, textarea {
    width: 100%; padding: 12px 14px; background: var(--surface2); border: 1px solid var(--border);
    border-radius: 8px; color: var(--text); font-family: var(--sans); font-size: 14px;
    transition: border-color 0.2s; outline: none;
  }
  input[type="checkbox"], input[type="radio"] {
    width: 16px; height: 16px; flex-shrink: 0; accent-color: var(--accent); cursor: pointer;
  }
  input:focus, select:focus, textarea:focus { border-color: var(--accent); }
  select option { background: var(--surface2); }
  textarea { resize: vertical; min-height: 80px; }
  .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

  /* TWO-COLUMN RESPONSIVE GRID (collapses to 1 col on mobile, see media query) */
  .grid-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

  /* TABLE */
  .table-wrap { overflow-x: auto; }
  table { width: 100%; border-collapse: collapse; font-size: 13px; }
  th { padding: 10px 14px; text-align: left; font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); border-bottom: 1px solid var(--border); }
  td { padding: 12px 14px; border-bottom: 1px solid rgba(37,42,52,0.5); vertical-align: middle; }
  tr:hover td { background: rgba(255,255,255,0.02); }
  .td-mono { font-family: var(--mono); font-size: 12px; }
  .td-muted { color: var(--text-muted); }

  /* HASH BADGE */
  .hash-badge {
    font-family: var(--mono); font-size: 9px; color: var(--text-dim);
    background: var(--surface2); padding: 3px 6px; border-radius: 4px;
    max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    display: inline-block; cursor: help;
  }
  .hash-valid { color: var(--accent); border: 1px solid rgba(0,229,160,0.2); }
  .hash-invalid { color: var(--danger); border: 1px solid rgba(255,59,92,0.3); }

  /* STATS */
  .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
  .stats-grid-5 { grid-template-columns: repeat(5, 1fr); }
  .stat-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
    padding: 20px;
  }
  .stat-val { font-family: var(--mono); font-size: 28px; color: var(--accent); }
  .stat-label { font-size: 11px; color: var(--text-muted); margin-top: 4px; letter-spacing: 0.08em; text-transform: uppercase; }

  /* FULL YEAR CALENDAR (Calendario Laboral) */
  .full-year-cal { grid-template-columns: repeat(4, 1fr); }

  /* MODAL */
  .modal-overlay {
    display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.8);
    backdrop-filter: blur(4px); z-index: 1000; align-items: center; justify-content: center;
  }
  .modal-overlay.open { display: flex; }
  .modal {
    background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
    padding: 32px; width: 90%; max-width: 500px; max-height: 90vh; overflow-y: auto;
  }
  .modal-title { font-family: var(--mono); font-size: 14px; font-weight: 700; margin-bottom: 24px; color: var(--accent); letter-spacing: 0.08em; }
  .modal-close { float: right; cursor: pointer; color: var(--text-muted); font-size: 20px; line-height: 1; }
  .modal-close:hover { color: var(--text); }

  /* ALERT */
  .alert {
    padding: 14px 18px; border-radius: 8px; margin-bottom: 16px;
    font-size: 13px; font-weight: 600; display: flex; align-items: center; gap: 10px;
    animation: fadeIn 0.3s ease;
  }
  @keyframes fadeIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
  .alert-success { background: rgba(0,229,160,0.1); border: 1px solid rgba(0,229,160,0.25); color: var(--accent); }
  .alert-warn { background: rgba(255,107,53,0.1); border: 1px solid rgba(255,107,53,0.25); color: var(--warn); }
  .alert-danger { background: rgba(255,59,92,0.1); border: 1px solid rgba(255,59,92,0.25); color: var(--danger); }
  .alert-info { background: rgba(0,102,255,0.1); border: 1px solid rgba(0,102,255,0.25); color: #5599ff; }

  /* PROGRESS */
  .progress-bar { height: 4px; background: var(--surface2); border-radius: 2px; overflow: hidden; margin-top: 8px; }
  .progress-fill { height: 100%; background: var(--accent); border-radius: 2px; transition: width 0.5s; }
  .progress-fill.warn { background: var(--warn); }
  .progress-fill.danger { background: var(--danger); }

  /* SIGN BADGE */
  .sign-badge { 
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 11px; padding: 3px 8px; border-radius: 4px;
  }
  .signed { background: rgba(0,229,160,0.1); color: var(--accent); }
  .unsigned { background: rgba(107,115,133,0.1); color: var(--text-muted); }
  .contested { background: rgba(255,59,92,0.1); color: var(--danger); }

  /* LOG ENTRIES */
  .log-entry {
    padding: 12px 16px; border-left: 3px solid var(--border);
    margin-bottom: 8px; background: var(--surface2); border-radius: 0 8px 8px 0;
    font-size: 12px;
  }
  .log-entry.modification { border-left-color: var(--warn); }
  .log-entry.auth { border-left-color: var(--accent2); }
  .log-entry.integrity { border-left-color: var(--danger); }
  .log-time { font-family: var(--mono); font-size: 10px; color: var(--text-muted); }

  /* AI ASSISTANT */
  .ai-chat { background: var(--surface2); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
  .ai-messages { height: 320px; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 12px; }
  .ai-msg { max-width: 80%; }
  .ai-msg.user { align-self: flex-end; }
  .ai-msg-bubble {
    padding: 12px 16px; border-radius: 10px; font-size: 13px; line-height: 1.5;
  }
  .ai-msg.user .ai-msg-bubble { background: var(--accent2); color: white; }
  .ai-msg.bot .ai-msg-bubble { background: var(--surface); border: 1px solid var(--border); }
  .ai-input-row { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border); background: var(--surface); }
  .ai-input-row input { flex: 1; }
  .typing { display: flex; gap: 4px; align-items: center; padding: 12px 16px; }
  .typing span { width: 6px; height: 6px; background: var(--text-muted); border-radius: 50%; animation: typing 1.2s infinite; }
  .typing span:nth-child(2) { animation-delay: 0.2s; }
  .typing span:nth-child(3) { animation-delay: 0.4s; }
  @keyframes typing { 0%,60%,100% { transform: translateY(0); } 30% { transform: translateY(-6px); } }

  /* LOGIN */
  .login-wrap { width: 100%; max-width: 420px; padding: 20px; }
  .login-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
    padding: 48px 40px; width: 100%; max-width: 420px;
  }
  .login-logo { text-align: center; margin-bottom: 32px; }
  .login-hex {
    width: 64px; height: 64px; background: var(--accent);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    margin: 0 auto 16px;
  }
  .login-title { font-family: var(--mono); font-size: 20px; font-weight: 700; text-align: center; }
  .login-sub { font-size: 12px; color: var(--text-muted); text-align: center; margin-top: 6px; letter-spacing: 0.1em; }
  .login-role-tabs { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; margin-bottom: 24px; }
  .role-tab {
    padding: 10px; border-radius: 8px; border: 1px solid var(--border); background: transparent;
    color: var(--text-muted); font-size: 12px; font-weight: 600; cursor: pointer; text-align: center;
    transition: all 0.2s;
  }
  .role-tab.active { border-color: var(--accent); color: var(--accent); background: rgba(0,229,160,0.08); }

  /* REMOTE BADGE */
  .remote-tag { 
    font-size: 10px; padding: 2px 7px; border-radius: 4px; font-family: var(--mono);
    background: rgba(0,102,255,0.15); color: #5599ff; border: 1px solid rgba(0,102,255,0.2);
  }

  /* INTEGRITY STATUS */
  .integrity-ok { color: var(--accent); font-family: var(--mono); font-size: 12px; }
  .integrity-fail { color: var(--danger); font-family: var(--mono); font-size: 12px; }

  /* INSPECTOR VIEW */
  .inspector-bar {
    background: rgba(255,107,53,0.08); border: 1px solid rgba(255,107,53,0.25);
    padding: 12px 20px; border-radius: 8px; margin-bottom: 20px;
    display: flex; align-items: center; gap: 12px;
  }
  .inspector-badge {
    background: var(--warn); color: white; font-family: var(--mono);
    font-size: 10px; padding: 4px 10px; border-radius: 4px; font-weight: 700;
    letter-spacing: 0.1em; text-transform: uppercase;
  }

  /* RESPONSIVE */
  @media (max-width: 768px) {
    .punch-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stats-grid-5 { grid-template-columns: 1fr 1fr; }
    .full-year-cal { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .grid-2col { grid-template-columns: 1fr; }

    .header {
      padding: 12px 16px;
      flex-wrap: wrap;
      gap: 10px;
    }
    .logo-text { font-size: 13px; }
    .logo-sub { font-size: 9px; }
    .header-right {
      flex-wrap: wrap;
      gap: 10px;
      width: 100%;
      justify-content: space-between;
    }
    .live-clock { font-size: 18px; }
    .live-date { font-size: 10px; }

    .nav {
      padding: 8px 12px;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
      flex-wrap: nowrap;
      white-space: nowrap;
    }
    .nav-btn { padding: 7px 12px; font-size: 12px; flex: 0 0 auto; }

    .view { padding: 16px; }
    .card { padding: 16px; }

    .punch-time { font-size: 32px; }
    .punch-display { padding: 20px; }

    .btn-row:not([style*="nowrap"]) { flex-direction: column; }
    .btn-row:not([style*="nowrap"]) .btn { width: 100%; }

    .modal { padding: 20px; width: 94%; }

    #calTipoPills button { padding: 6px 10px !important; font-size: 11px !important; }

    table { font-size: 12px; }
    th, td { padding: 8px 10px; }
  }

  @media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .stats-grid-5 { grid-template-columns: 1fr; }
    .full-year-cal { grid-template-columns: 1fr; }
    .login-role-tabs { grid-template-columns: 1fr; }
    .punch-time { font-size: 28px; }
    .live-clock { font-size: 16px; }
  }