:root {
  --bg: #f9f9f9;
  --card: #fff;
  --border: #ddd;
  --accent: #0077b6;
  --text: #333;
}

body {
  font-family: "Tahoma", sans-serif;
  background: var(--bg);
  margin: 0;
  padding: 0;
  direction: rtl;
}

header {
  background: var(--accent);
  color: white;
  padding: 1rem;
  text-align: center;
}

h1 { margin: 0; font-size: 1.5rem; }

#dateNav {
  margin-top: 0.5rem;
}

#dateNav button {
  background: white;
  border: none;
  padding: 0.3rem 0.6rem;
  margin: 0 0.3rem;
  border-radius: 5px;
}

.card {
  background: var(--card);
  margin: 1rem;
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.row {
  display: flex;
  justify-content: space-between;
  margin: 0.3rem 0;
}

.row.total {
  border-top: 1px solid var(--border);
  padding-top: 0.5rem;
  font-weight: bold;
}

.lbl { flex: 1; }
.val { flex: 1; text-align: left; }
.unit { margin-right: 4px; }

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

ul li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--border);
}

ul li input[type="number"] {
  width: 80px;
  margin-right: 0.5rem;
}

ul li.paid {
  text-decoration: line-through;
  color: gray;
}

footer {
  text-align: center;
  margin: 1rem;
}

footer button {
  margin: 0.3rem;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  cursor: pointer;
}