:root {
  --primary: #0b3d66;
  --primary-dark: #082a49;
  --accent: #f5a623;
  --success: #1e8e3e;
  --danger: #d33;
  --warning: #b8860b;
  --bg: #f2f5f8;
  --card-bg: #ffffff;
  --border: #e1e6ec;
  --text: #1e2733;
  --muted: #6b7785;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

/* ---- App shell (dashboard layouts) ---- */
.app-shell { display: flex; flex-direction: column; min-height: 100vh; }

.topbar {
  background: var(--primary);
  color: #fff;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar .brand { font-size: 1.2rem; font-weight: 700; }
.topbar .muted { color: #cfe0ef; font-weight: 400; font-size: 0.9rem; }
.topbar-user { display: flex; align-items: center; gap: 12px; }
.topbar-user span { font-size: 0.9rem; }

.app-body { display: flex; flex: 1; }

.sidebar {
  width: 220px;
  background: var(--primary-dark);
  padding: 16px 0;
  flex-shrink: 0;
}
.sidebar .nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #dce6f0;
  padding: 12px 20px;
  font-size: 0.92rem;
}
.sidebar .nav-link:hover { background: rgba(255,255,255,0.08); text-decoration: none; }
.sidebar .nav-link.active { background: var(--accent); color: #1e2733; font-weight: 600; }
.nav-icon { width: 20px; text-align: center; }

.content { flex: 1; padding: 24px; max-width: 1100px; }

/* ---- Cards & stats ---- */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}
.card h3 { margin-top: 0; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
}
.stat-label { color: var(--muted); font-size: 0.85rem; margin-bottom: 6px; }
.stat-value { font-size: 1.4rem; font-weight: 700; color: var(--primary); }

/* ---- Tables ---- */
.table-responsive { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; font-size: 0.92rem; }
.table thead th { background: #f7f9fb; color: var(--muted); font-weight: 600; }
.table .table-total td { font-weight: 700; background: #f7f9fb; }

/* ---- Forms ---- */
label { display: block; margin: 12px 0 4px; font-weight: 600; font-size: 0.88rem; }
input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.95rem;
}
.input-sm { width: auto; padding: 6px 8px; }
.inline-form { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.92rem;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); text-decoration: none; }
.btn-outline { background: transparent; border: 1px solid #fff; color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.15); text-decoration: none; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 0.82rem; }
.btn-block { width: 100%; margin-top: 16px; }
.actions form { display: flex; gap: 6px; }

/* ---- Alerts / badges ---- */
.alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 0.9rem; }
.alert-success { background: #e6f4ea; color: var(--success); }
.alert-danger  { background: #fdecec; color: var(--danger); }
.alert-warning { background: #fff6e0; color: var(--warning); }
.alert-info    { background: #e8f0fe; color: var(--primary); }

.badge { padding: 3px 10px; border-radius: 20px; font-size: 0.78rem; font-weight: 600; }
.badge-active   { background: #e6f4ea; color: var(--success); }
.badge-pending  { background: #fff6e0; color: var(--warning); }
.badge-blocked  { background: #fdecec; color: var(--danger); }

.muted { color: var(--muted); font-size: 0.85rem; }

/* ---- Auth pages ---- */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  padding: 20px;
}
.auth-card {
  background: #fff;
  border-radius: 12px;
  padding: 32px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.auth-title { margin: 0 0 4px; color: var(--primary); }
.auth-subtitle { color: var(--muted); margin-top: 0; }
.auth-footer { margin-top: 18px; font-size: 0.88rem; text-align: center; color: var(--muted); }

.referral-box { display: flex; gap: 8px; }
.referral-box input { flex: 1; }

/* ---- Landing page ---- */
.landing { max-width: 960px; margin: 0 auto; padding: 0 20px 60px; }
.landing-hero {
  text-align: center;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  margin: 0 -20px 30px;
  padding: 60px 20px;
  border-radius: 0 0 24px 24px;
}
.landing-hero h1 { margin-bottom: 6px; }
.hero-amount { font-size: 1.6rem; font-weight: 700; color: var(--accent); margin: 16px 0; }
.hero-actions { display: flex; gap: 12px; justify-content: center; margin-top: 20px; }
.landing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 30px; }
.landing-card { background: #fff; border-radius: 10px; padding: 20px; text-align: center; border: 1px solid var(--border); }
.landing-card h3 { color: var(--primary); font-size: 1.5rem; margin: 0 0 8px; }
.landing-table { background: #fff; border-radius: 10px; padding: 20px; border: 1px solid var(--border); margin-bottom: 24px; }
.landing-footer { text-align: center; color: var(--muted); margin-top: 30px; }