function $(id) { return document.getElementById(id); }
function log(...args) { console.log('[Holesail-dashboard]', ...args); }

function timeAgo(timestamp) {
  const seconds = Math.floor((Date.now() - timestamp) / 1000);
  if (seconds < 60) return seconds + 's ago';
  const minutes = Math.floor(seconds / 60);
  if (minutes < 60) return minutes + 'm ago';
  const hours = Math.floor(minutes / 60);
  if (hours < 24) return hours + 'h ago';
  return Math.floor(hours / 24) + 'd ago';
}

function formatUptime(ms) {
  const seconds = Math.floor(ms / 1000);
  if (seconds < 60) return seconds + 's';
  const minutes = Math.floor(seconds / 60);
  if (minutes < 60) return minutes + 'm ' + (seconds % 60) + 's';
  const hours = Math.floor(minutes / 60);
  return hours + 'h ' + (minutes % 60) + 'm';
}

function truncate(str, len = 20) {
  if (!str) return '';
  return str.length > len ? str.slice(0, len) + '…' : str;
}

function escapeHtml(str) {
  const div = document.createElement('div');
  div.textContent = str;
  return div.innerHTML;
}