:root {
    --brand: #0c7b93;
    --brand-dark: #0a5f72;
    --accent: #f9a825;
    --text: #1f2937;
    --muted: #6b7280;
    --bg: #ffffff;
    /* --bg-alt: #f5f7fa; */
    --bg-alt: #ffffff;
    --border: #e5e7eb;
    --focus: #3b82f6;
  }
  
  * { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; }
  body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Inter, "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    /* background: linear-gradient(180deg, #ffffff 0%, #f7fafc 100%); */
    background:  #ffffff;
    
  }
  
  .container {
    width: 100%;
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 1.25rem;
  }
  
  .site-header {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 20;
  }
  .site-header .container {
    display: flex; align-items: center; justify-content: space-between;
    min-height: 64px;
  }
  .brand img { display: block; }
  
  .site-nav ul { list-style: none; display: flex; gap: 1rem; padding: 0; margin: 0; }
  .site-nav a {
    color: var(--text); text-decoration: none; font-weight: 600;
  }
  .site-nav a:hover, .site-nav a:focus { color: var(--brand); }
  
  .hero {
    padding: 4rem 0 2rem;
    text-align: left;
  }
  #logo{
    /* padding: 4rem 0 2rem; */
    text-align: center;
  }
  .tagline {
    font-size: 1.25rem;
    color: var(--muted);
    margin-top: 0.5rem;
  }
  
  .status { margin-top: 2rem; }
  .status-text { margin-bottom: 1rem; }
  
  .form label { display: block; font-weight: 600; margin-bottom: 0.5rem; }
  .input-row { display: flex; gap: 0.75rem; }
  .input-row input[type="email"] {
    flex: 1;
    padding: 0.75rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
  }
  .input-row input::placeholder { color: #9ca3af; }
  .input-row .btn-primary {
    padding: 0.75rem 1rem;
    background: var(--brand);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
  }
  .input-row .btn-primary:hover { background: var(--brand-dark); }
  
  .helper { color: var(--muted); margin-top: 0.5rem; font-size: 0.95rem; }
  .feedback { margin-top: 0.75rem; min-height: 1.2rem; font-weight: 600; }
  
  .countdown { margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--border); }
  .time-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(60px, 1fr));
    gap: 0.75rem;
    padding: 0; margin: 0.75rem 0 0;
    list-style: none;
  }
  .time-grid li {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.75rem;
    text-align: center;
  }
  .time-grid span { display: block; font-size: 1.5rem; font-weight: 800; }
  .time-grid small { color: var(--muted); }
  
  .features { padding: 2rem 0; }
  .feature-list { list-style: none; display: grid; grid-template-columns: 1fr; gap: 1rem; padding: 0; margin: 0; }
  .feature-list li {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
  }
  .feature-list h3 { margin: 0 0 0.25rem; }
  .feature-list p { margin: 0; color: var(--muted); }
  
  .site-footer {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
  }
  .site-footer .legal, .site-footer .contact { margin-bottom: 1rem; }
  .site-footer a { color: var(--brand); text-decoration: none; }
  .site-footer a:hover { text-decoration: underline; }
  .site-footer .copyright { color: var(--muted); margin-top: 0.5rem; }
  
  @media (min-width: 768px) {
    .hero { padding: 5rem 0 2rem; }
    .feature-list { grid-template-columns: repeat(3, 1fr); }
    .tagline { font-size: 1.5rem; }
  }
  
  /* Accesibilidad y enfoque */
  :focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 2px;
  }
  
  /* Reducción de movimiento */
  @media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
  }