:root {
  --blue: #0D56A3;
  --brand: #0088CB;
  --cyan: #00B0D8;
  --navy: #072B52;
  --red: #ED1C24;
  --yellow: #FFCB05;
  --grey: #727272;
  --light: #f2f8fc;
  --border: #d7e3ee;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: #333;
  background: #fff;
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

h1, h2, h3 {
  color: var(--navy);
  font-weight: 400;
}

a { color: var(--brand); }

/* ---------- Header ---------- */

.site-header {
  background: #fff;
  border-bottom: 3px solid var(--brand);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand img { height: 56px; width: auto; }

.brand span {
  color: var(--grey);
  font-size: 15px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--navy);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.5px;
}

.site-nav a:hover { color: var(--brand); }

.logout-form { display: inline; margin: 0; }

.btn-link {
  background: none;
  border: none;
  padding: 0;
  color: var(--red);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}

/* ---------- Layout ---------- */

.page {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.page-narrow { max-width: 640px; margin: 0 auto; }

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--grey);
  font-size: 12px;
  text-align: center;
  padding: 14px 20px;
}

.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.page-head h1 { margin: 0; font-size: 26px; }

/* ---------- Flash messages ---------- */

.flash {
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 14px;
}

.flash-success { background: #e6f6ea; color: #1c6b34; border: 1px solid #b8e2c4; }
.flash-error   { background: #fdeaea; color: #a3161d; border: 1px solid #f3c2c4; }
.flash-info    { background: var(--light); color: var(--navy); border: 1px solid var(--border); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 9px 18px;
  font-size: 14px;
  font-family: inherit;
  text-decoration: none;
  cursor: pointer;
}

.btn:hover { background: var(--blue); }

.btn-secondary {
  background: #fff;
  color: var(--brand);
  border: 1px solid var(--brand);
}

.btn-secondary:hover { background: var(--light); color: var(--blue); }

.btn-danger { background: var(--red); }
.btn-danger:hover { background: #c1121a; }

.btn-small { padding: 5px 12px; font-size: 13px; }

/* ---------- Forms ---------- */

.form-grid { display: grid; gap: 14px; }

label.field { display: block; font-size: 13px; color: var(--navy); }

label.field span {
  display: block;
  margin-bottom: 4px;
  letter-spacing: 0.3px;
}

input[type=text], input[type=email], input[type=password], input[type=date],
input[type=number], select, textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit;
  font-size: 14px;
  background: #fff;
}

input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--cyan);
  outline-offset: -1px;
  border-color: var(--cyan);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.form-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 6px;
  flex-wrap: wrap;
}

.hint { color: var(--grey); font-size: 12px; margin-top: 4px; }

.form-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 640px) {
  .form-cols { grid-template-columns: 1fr; }
}

/* ---------- Cards / login ---------- */

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
}

.login-wrap {
  max-width: 400px;
  margin: 40px auto;
  text-align: center;
}

.login-wrap img { width: 160px; margin-bottom: 12px; }

.login-wrap .card { text-align: left; }

.login-wrap h1 {
  font-size: 20px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--grey);
}

/* ---------- Tables ---------- */

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

table.list th {
  text-align: left;
  background: var(--navy);
  color: #fff;
  padding: 9px 10px;
  font-weight: 500;
  letter-spacing: 0.4px;
}

table.list td {
  padding: 9px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

table.list tr:hover td { background: var(--light); }

.table-wrap { overflow-x: auto; }

.badge {
  display: inline-block;
  border-radius: 10px;
  font-size: 11px;
  padding: 2px 9px;
  letter-spacing: 0.4px;
}

.badge-admin   { background: var(--yellow); color: #6b5400; }
.badge-manager { background: #d9f3fa; color: #045d74; }
.badge-staff   { background: var(--light); color: var(--navy); }
.badge-off    { background: #eee; color: #888; }
.badge-sent   { background: #e6f6ea; color: #1c6b34; }
.badge-draft  { background: #fff4d6; color: #8a6d00; }

.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* ---------- PO line items editor ---------- */

table.po-lines { width: 100%; border-collapse: collapse; }

table.po-lines th {
  background: #000;
  color: #fff;
  font-weight: 500;
  padding: 7px 8px;
  font-size: 13px;
  text-align: left;
}

table.po-lines td { padding: 3px 3px; }

table.po-lines input { padding: 6px 8px; font-size: 13px; }

.line-remove {
  background: none;
  border: none;
  color: var(--red);
  font-size: 17px;
  cursor: pointer;
  padding: 2px 6px;
}

/* autocomplete */
.ac-wrap { position: relative; }

.ac-list {
  position: absolute;
  z-index: 30;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 0 0 6px 6px;
  box-shadow: 0 6px 14px rgba(7,43,82,0.12);
  max-height: 220px;
  overflow-y: auto;
}

.ac-item {
  padding: 7px 10px;
  font-size: 13px;
  cursor: pointer;
}

.ac-item strong { color: var(--blue); }

.ac-item:hover, .ac-item.active { background: var(--light); }

/* ---------- PO view ---------- */

.po-sheet {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  max-width: 800px;
}

.po-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
  font-size: 14px;
}

.po-meta dt { color: var(--grey); font-size: 12px; text-transform: uppercase; letter-spacing: 0.6px; }
.po-meta dd { margin: 2px 0 0; }

.po-number { color: var(--red); font-size: 22px; font-weight: 600; }

.signature-preview {
  max-height: 70px;
  max-width: 240px;
  border: 1px dashed var(--border);
  padding: 4px;
  border-radius: 6px;
  background: #fff;
}