:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --bg: #f4f6f9;
  --card-bg: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --radius: 10px;
}

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

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }

/* ---------------- Navbar ---------------- */
.navbar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 14px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 10;
}
.navbar .logo { font-size: 22px; font-weight: 700; color: var(--primary); }
.navbar nav a { margin-left: 22px; font-weight: 500; color: var(--text); }
.navbar nav a:hover { color: var(--primary); }

/* ---------------- Layout ---------------- */
.container { max-width: 1100px; margin: 0 auto; padding: 32px 20px; }
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

/* ---------------- Hero ---------------- */
.hero {
  text-align: center;
  padding: 70px 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
}
.hero h1 { font-size: 40px; margin-bottom: 12px; }
.hero p { font-size: 18px; opacity: 0.9; margin-bottom: 26px; }

/* ---------------- Forms ---------------- */
.form-group { margin-bottom: 16px; }
label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 14px; }
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 8px;
  border: none;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  text-align: center;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-outline { background: transparent; border: 1px solid var(--primary); color: var(--primary); }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 14px; font-size: 13px; }

/* ---------------- Badges (status) ---------------- */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  text-transform: capitalize;
}
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-assigned { background: #dbeafe; color: #1e40af; }
.badge-accepted { background: #e0e7ff; color: #3730a3; }
.badge-picked_up { background: #fae8ff; color: #86198f; }
.badge-in_transit { background: #cffafe; color: #155e75; }
.badge-delivered { background: #dcfce7; color: #166534; }
.badge-rejected, .badge-cancelled { background: #fee2e2; color: #991b1b; }

/* ---------------- Tables ---------------- */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { background: #f9fafb; font-weight: 600; color: var(--muted); }

/* ---------------- Stat cards (admin dashboard) ---------------- */
.stat-card { text-align: center; }
.stat-card .value { font-size: 30px; font-weight: 700; color: var(--primary); }
.stat-card .label { color: var(--muted); font-size: 13px; margin-top: 4px; }

/* ---------------- Utility ---------------- */
.text-center { text-align: center; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.muted { color: var(--muted); font-size: 14px; }
.error-text { color: var(--danger); font-size: 13px; margin-top: 6px; }
.success-text { color: var(--success); font-size: 13px; margin-top: 6px; }
.footer { text-align: center; padding: 24px; color: var(--muted); font-size: 13px; }

@media (max-width: 720px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ---------------- Driver/Sidebar Layout ---------------- */
.driver-layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 230px;
  background: var(--card-bg);
  border-right: 1px solid var(--border);
  padding: 20px 0;
  flex-shrink: 0;
}
.sidebar-logo { font-size: 20px; font-weight: 700; color: var(--primary); padding: 0 20px 20px; }
.sidebar-nav { display: flex; flex-direction: column; }
.sidebar-nav a {
  padding: 12px 20px;
  color: var(--text);
  font-weight: 500;
  font-size: 14px;
  border-left: 3px solid transparent;
}
.sidebar-nav a:hover { background: var(--bg); }
.sidebar-nav a.active { background: #eff6ff; color: var(--primary); border-left-color: var(--primary); font-weight: 700; }

.main-content { flex: 1; padding: 28px 32px; max-width: 1100px; }
.top-header { display: flex; align-items: center; gap: 14px; margin-bottom: 6px; }
.hamburger { display: none; background: none; border: none; font-size: 22px; cursor: pointer; }

.welcome-banner {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 24px;
}
.welcome-banner h2 { font-size: 22px; margin: 0; }
.welcome-banner p { opacity: 0.9; margin-top: 4px; font-size: 14px; }

.empty-state {
  text-align: center;
  padding: 50px 20px;
  color: var(--muted);
}
.empty-state .icon { font-size: 40px; margin-bottom: 12px; }

@media (max-width: 900px) {
  .sidebar {
    position: fixed;
    left: -240px;
    top: 0;
    bottom: 0;
    z-index: 50;
    transition: left 0.2s ease;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
  }
  .sidebar.open { left: 0; }
  .hamburger { display: inline-block; }
  .main-content { padding: 20px; }
}