@import url('https://fonts.googleapis.com/css2?family=Vazirmatn:wght@400;500;600;700&display=swap');

:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --success-bg: #ecfdf5;
  --success-text: #047857;
  --error-bg: #fef2f2;
  --error-text: #b91c1c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Vazirmatn', Tahoma, sans-serif;
  background: var(--bg);
  color: var(--text);
  direction: rtl;
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

nav {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

nav a {
  text-decoration: none;
  color: var(--primary);
  background: var(--card);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
}

nav a.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

h1 {
  font-size: 22px;
  margin: 0 0 4px;
}

.subtitle {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--muted);
}

input[type=text], input[type=tel], input[type=number], input[type=search] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  margin-bottom: 16px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}

input[dir=ltr] { text-align: left; }

button {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}

button:hover { background: var(--primary-dark); }

.msg {
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 16px;
}

.msg.success { background: var(--success-bg); color: var(--success-text); }
.msg.error   { background: var(--error-bg); color: var(--error-text); }

.balance {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  margin: 4px 0 2px;
}

.balance-label {
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .02em;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  text-align: right;
  padding: 8px 6px;
  border-bottom: 1px solid var(--border);
}

th { color: var(--muted); font-weight: 600; font-size: 12px; }

.customer-name { font-size: 18px; font-weight: 600; margin: 0 0 2px; }
.customer-phone { color: var(--muted); font-size: 14px; margin: 0 0 16px; direction: ltr; text-align: right; }

.customer-row {
  cursor: pointer;
}
.customer-row:hover { background: #f9fafb; }

.customer-row .r-phone { color: var(--muted); font-size: 13px; direction: ltr; unicode-bidi: plaintext; }
.customer-row .r-balance { color: var(--primary); font-weight: 600; white-space: nowrap; }

.empty-state {
  color: var(--muted);
  font-size: 14px;
  text-align: center;
  padding: 20px 0;
}

.detail-panel {
  display: none;
}
.detail-panel.open {
  display: block;
}

.close-detail {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 13px;
  width: auto;
  padding: 0;
  margin-bottom: 12px;
  cursor: pointer;
}