/* ============================================================
   Riverbank Project Manager — design tokens
   Ink navy sidebar, warm ochre accent, clean data-forward layout.
   ============================================================ */
:root {
  --ink: #161B26;
  --ink-soft: #232938;
  --ink-border: #2E3546;
  --accent: #D98E3B;
  --accent-dark: #B9721F;
  --bg: #F4F5F7;
  --surface: #FFFFFF;
  --border: #E3E6EB;
  --text: #1B1F27;
  --text-muted: #6B7280;
  --success: #2F855A;
  --success-bg: #E7F4EC;
  --danger: #C0392B;
  --danger-bg: #FBEAE8;
  --amber: #B9721F;
  --amber-bg: #FBF0DF;
  --blue: #2B6CB0;
  --blue-bg: #E8F0FA;
  --grey-bg: #EDEEF1;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 24, 33, 0.06), 0 1px 1px rgba(20, 24, 33, 0.04);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14.5px;
  line-height: 1.5;
}

h1, h2, h3, h4, .brand {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  letter-spacing: -0.01em;
}

a { color: inherit; text-decoration: none; }

/* ---------- App shell ---------- */
.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 250px;
  flex-shrink: 0;
  background: var(--ink);
  color: #C7CBD6;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; bottom: 0; left: 0;
}

.sidebar .brand {
  color: #fff;
  font-size: 1.15rem;
  font-weight: 600;
  padding: 22px 20px 18px;
  border-bottom: 1px solid var(--ink-border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar .brand .mark {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--ink);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-family: 'Space Grotesk', sans-serif;
}

.nav-group { padding: 16px 10px; }
.nav-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #6C7386;
  padding: 6px 12px 6px;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  color: #C7CBD6;
  font-size: 0.92rem;
  margin-bottom: 2px;
}
.nav-link:hover { background: var(--ink-soft); color: #fff; }
.nav-link.active { background: var(--accent); color: var(--ink); font-weight: 600; }
.nav-link .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; opacity: .55; }

.sidebar-footer {
  margin-top: auto;
  padding: 16px 20px;
  border-top: 1px solid var(--ink-border);
  font-size: 0.82rem;
}
.sidebar-footer .user { color: #fff; font-weight: 600; }
.sidebar-footer .role { color: #8990A3; text-transform: capitalize; }
.sidebar-footer a { color: #E39B4C; }

.main {
  margin-left: 250px;
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 5;
}
.topbar h1 { font-size: 1.25rem; margin: 0; }
.topbar .crumb { color: var(--text-muted); font-size: 0.85rem; margin-top: 2px; }

.content { padding: 26px 28px 60px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid transparent;
  background: var(--ink);
  color: #fff;
  padding: 9px 16px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease;
}
.btn:hover { background: var(--ink-soft); }
.btn-accent { background: var(--accent); color: var(--ink); }
.btn-accent:hover { background: var(--accent-dark); color: #fff; }
.btn-outline { background: transparent; color: var(--text); border-color: var(--border); }
.btn-outline:hover { background: var(--grey-bg); }
.btn-danger { background: var(--danger-bg); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 5px 11px; font-size: 0.78rem; border-radius: 6px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

/* ---------- Cards / surfaces ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-header h2, .card-header h3 { margin: 0; font-size: 1.02rem; }
.card-body { padding: 20px; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 22px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.stat-card .label { color: var(--text-muted); font-size: 0.8rem; margin-bottom: 6px; }
.stat-card .value { font-family: 'Space Grotesk', sans-serif; font-size: 1.6rem; font-weight: 600; }
.stat-card .sub { font-size: 0.78rem; color: var(--text-muted); margin-top: 4px; }
.stat-card.accent { border-top: 3px solid var(--accent); }

@media (max-width: 900px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Tables ---------- */
table.data { width: 100%; border-collapse: collapse; }
table.data th {
  text-align: left;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: #FAFAFB;
}
table.data td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
table.data tbody tr:hover { background: #FAFBFC; }
table.data tbody tr:last-child td { border-bottom: none; }
.text-muted { color: var(--text-muted); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.nowrap { white-space: nowrap; }

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
}
.badge-grey  { background: var(--grey-bg); color: #4B5160; }
.badge-blue  { background: var(--blue-bg); color: var(--blue); }
.badge-green { background: var(--success-bg); color: var(--success); }
.badge-amber { background: var(--amber-bg); color: var(--amber); }
.badge-red   { background: var(--danger-bg); color: var(--danger); }

/* ---------- Forms ---------- */
label { display: block; font-size: 0.83rem; font-weight: 600; margin-bottom: 6px; }
.form-group { margin-bottom: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
@media (max-width: 800px) { .form-row, .form-row-3 { grid-template-columns: 1fr; } }

input[type=text], input[type=email], input[type=password], input[type=number],
input[type=date], input[type=tel], select, textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(217, 142, 59, 0.18);
}
textarea { resize: vertical; min-height: 90px; }
.hint { font-size: 0.78rem; color: var(--text-muted); margin-top: 4px; }

/* ---------- Progress bar ---------- */
.progress { background: var(--grey-bg); border-radius: 999px; height: 8px; overflow: hidden; }
.progress > span { display: block; height: 100%; background: var(--accent); }

/* ---------- Alerts / flash ---------- */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 0.88rem;
  border: 1px solid transparent;
}
.alert-success { background: var(--success-bg); color: var(--success); border-color: #BFE3CC; }
.alert-error   { background: var(--danger-bg); color: var(--danger); border-color: #F0C4BE; }
.alert-info    { background: var(--blue-bg); color: var(--blue); border-color: #C7DDF3; }

/* ---------- Empty state ---------- */
.empty {
  text-align: center;
  padding: 50px 20px;
  color: var(--text-muted);
}
.empty h3 { color: var(--text); margin-bottom: 6px; }

/* ---------- Login page ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  background-image: radial-gradient(circle at 20% 20%, #232938 0%, var(--ink) 60%);
}
.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border-radius: 14px;
  padding: 34px 32px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.login-card .mark {
  width: 42px; height: 42px; border-radius: 10px;
  background: var(--accent); color: var(--ink);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.1rem;
  margin-bottom: 16px;
}
.login-card h1 { font-size: 1.3rem; margin: 0 0 4px; }
.login-card p.sub { color: var(--text-muted); margin: 0 0 22px; font-size: 0.88rem; }

/* ---------- Print (invoice) ---------- */
@media print {
  .no-print { display: none !important; }
  .main { margin-left: 0 !important; }
  body { background: #fff; }
  .content { padding: 0; }
}

.invoice-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 26px;
}
.invoice-head .co-name { font-family: 'Space Grotesk', sans-serif; font-size: 1.3rem; font-weight: 700; }
.invoice-meta { text-align: right; }
.invoice-meta .num { font-family: 'Space Grotesk', sans-serif; font-size: 1.1rem; font-weight: 700; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab {
  padding: 10px 16px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
}
.tab.active { color: var(--text); border-color: var(--accent); }

.mobile-toggle { display: none; }
@media (max-width: 880px) {
  .sidebar { transform: translateX(-100%); transition: transform .2s ease; z-index: 20; }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .mobile-toggle { display: inline-flex; }
  .form-row-3 { grid-template-columns: 1fr; }
}