:root {
  --ink: #111114;
  --ink-soft: #55555e;
  --line: #e4e4e9;
  --bg: #f6f6f8;
  --card: #ffffff;
  --accent: #111114;
  --accent-text: #ffffff;
  --ok: #1a7f4e;
  --warn: #b07607;
  --danger: #c0392b;
  --radius: 10px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.5;
}

header.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.logo { font-weight: 700; font-size: 17px; letter-spacing: -0.3px; text-decoration: none; color: var(--ink); }
.logo span { color: var(--ink-soft); font-weight: 400; }

.container { max-width: 1060px; margin: 0 auto; padding: 28px; }

h1 { font-size: 22px; letter-spacing: -0.4px; margin-bottom: 4px; }
h2 { font-size: 16px; margin: 28px 0 12px; }
.muted { color: var(--ink-soft); font-size: 13px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 8px 15px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: border-color .15s, background .15s;
}
.btn:hover { border-color: var(--ink-soft); }
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.btn.primary:hover { opacity: .88; }
.btn.danger { color: var(--danger); }
.btn.sm { padding: 5px 10px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: default; }

/* Nombre del documento en la tabla: abre la vista de detalle.
   El padding vertical le da área de toque cómoda en móvil. */
.doc-link {
  display: inline-block;
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}
.doc-link:hover { border-bottom-color: var(--ink); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-soft); padding: 12px 16px; border-bottom: 1px solid var(--line); }
td { padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tr:last-child td { border-bottom: none; }

.chip {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 600;
}
.chip.draft { background: #eeeef1; color: var(--ink-soft); }
.chip.sent { background: #fdf3df; color: var(--warn); }
.chip.signed { background: #e2f3ea; color: var(--ok); }

.modal-backdrop {
  position: fixed; inset: 0; background: rgba(17,17,20,.45);
  display: flex; align-items: center; justify-content: center; z-index: 100;
}
.modal {
  background: var(--card); border-radius: 14px; padding: 24px;
  width: min(440px, 92vw); box-shadow: 0 20px 60px rgba(0,0,0,.25);
}
.modal h3 { font-size: 17px; margin-bottom: 14px; }
.modal label { display: block; font-size: 13px; font-weight: 600; margin: 12px 0 4px; }
.modal input[type="text"], .modal input[type="email"] {
  width: 100%; padding: 9px 12px; border: 1px solid var(--line);
  border-radius: 8px; font-size: 14px;
}
.modal .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }

.hidden { display: none !important; }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--ink); color: #fff; padding: 10px 18px;
  border-radius: 99px; font-size: 14px; z-index: 200;
  animation: fadein .2s;
}
@keyframes fadein { from { opacity: 0; transform: translate(-50%, 8px); } }

.empty {
  padding: 44px; text-align: center; color: var(--ink-soft); font-size: 14px;
}