:root {
  --bg: #FFFFFF;
  --bg-sidebar: #F8F7F4;
  --bg-card: #F4F1EB;
  --gold: #B8922A;
  --gold-light: #D4AF6A;
  --text: #0C1F3D;
  --text-muted: #6B7280;
  --border: #E5E0D8;
  --success: #16A34A;
  --error: #C0392B;
  --sidebar-width: 260px;
}

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

body { font-family: 'DM Sans', sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }

/* ── Login ───────────────────────────────────────── */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--bg-sidebar); }

.login-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 4px 24px rgba(12,31,61,0.08);
}

.login-logo { display: block; font-size: 1.5rem; font-weight: 600; color: var(--text); text-align: center; margin-bottom: 8px; letter-spacing: -0.02em; }
.login-subtitle { text-align: center; color: var(--text-muted); font-size: 0.875rem; margin-bottom: 32px; }

.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 0.875rem; font-weight: 500; color: var(--text); margin-bottom: 6px; }
.form-input { width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: 6px; font-family: inherit; font-size: 0.9375rem; color: var(--text); background: var(--bg); transition: border-color 0.15s; outline: none; }
.form-input:focus { border-color: var(--gold); }
.form-input:focus-visible { outline: 2px solid var(--gold); outline-offset: 1px; }
.form-input--error { border-color: var(--error); }
.form-error { display: block; font-size: 0.8125rem; color: var(--error); margin-top: 6px; }

/* ── Buttons ─────────────────────────────────────── */
.btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--gold); color: #fff; border: none; border-radius: 6px; padding: 10px 20px; font-family: inherit; font-size: 0.9375rem; font-weight: 500; cursor: pointer; transition: background 0.15s; width: 100%; }
.btn-primary:hover { background: var(--gold-light); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-primary:focus-visible { outline: 2px solid var(--gold-light); outline-offset: 2px; }

.btn-ghost { display: inline-flex; align-items: center; gap: 6px; background: transparent; color: var(--gold); border: 1px solid var(--gold); border-radius: 6px; padding: 8px 16px; font-family: inherit; font-size: 0.875rem; font-weight: 500; cursor: pointer; transition: background 0.15s; }
.btn-ghost:hover { background: rgba(184,146,42,0.08); }
.btn-ghost:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

.link-muted { display: block; text-align: center; font-size: 0.8125rem; color: var(--text-muted); margin-top: 16px; cursor: pointer; text-decoration: none; }
.link-muted:hover { color: var(--gold); }

/* ── Alert ───────────────────────────────────────── */
.alert { border-radius: 8px; padding: 14px 16px; margin-bottom: 20px; font-size: 0.875rem; }
.alert--error { background: #FEF2F2; border: 1px solid #FECACA; color: var(--error); }
.alert--info { background: #FFFBEB; border: 1px solid #FDE68A; color: #92400E; }

/* ── App layout ──────────────────────────────────── */
.sidebar { position: fixed; top: 0; left: 0; bottom: 0; width: var(--sidebar-width); background: var(--bg-sidebar); border-right: 1px solid var(--border); display: flex; flex-direction: column; padding: 32px 0; z-index: 100; }

.sidebar-logo { font-size: 1.25rem; font-weight: 600; color: var(--text); padding: 0 24px; margin-bottom: 8px; letter-spacing: -0.02em; }

.sidebar-user { padding: 0 24px 24px; border-bottom: 1px solid var(--border); }
.sidebar-user-name { font-size: 0.875rem; font-weight: 500; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-user-email { font-size: 0.75rem; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.sidebar-nav { flex: 1; padding: 16px 0; }

.nav-link { display: flex; align-items: center; gap: 10px; padding: 10px 24px; font-size: 0.9375rem; color: var(--text-muted); text-decoration: none; border-left: 3px solid transparent; transition: color 0.15s, border-color 0.15s, background 0.15s; cursor: pointer; background: none; border-top: none; border-right: none; border-bottom: none; width: 100%; text-align: left; font-family: inherit; }
.nav-link:hover { color: var(--text); background: rgba(184,146,42,0.06); }
.nav-link--active { color: var(--gold); border-left-color: var(--gold); background: rgba(184,146,42,0.06); font-weight: 500; }

.sidebar-footer { padding: 16px 24px 0; border-top: 1px solid var(--border); }
.btn-logout { display: flex; align-items: center; gap: 8px; font-size: 0.875rem; color: var(--text-muted); background: none; border: none; cursor: pointer; font-family: inherit; padding: 8px 0; transition: color 0.15s; }
.btn-logout:hover { color: var(--error); }

.main { margin-left: var(--sidebar-width); padding: 40px 48px; min-height: 100vh; }
.view-title { font-size: 1.5rem; font-weight: 600; color: var(--text); margin-bottom: 24px; }

/* ── Card ────────────────────────────────────────── */
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; padding: 24px; margin-bottom: 20px; }
.card-title { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); margin-bottom: 16px; }

/* ── Badge ───────────────────────────────────────── */
.badge { display: inline-flex; align-items: center; padding: 2px 10px; border-radius: 999px; font-size: 0.75rem; font-weight: 500; }
.badge--success { background: #D1FAE5; color: var(--success); }
.badge--warning { background: #FEF3C7; color: #92400E; }

/* ── Skeleton ────────────────────────────────────── */
.skeleton { background: linear-gradient(90deg, #E5E0D8 25%, #F4F1EB 50%, #E5E0D8 75%); background-size: 200% 100%; animation: skeleton-pulse 1.5s infinite; border-radius: 4px; }
@keyframes skeleton-pulse { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ── Field row (inline edit) ─────────────────────── */
.field-row { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border); flex-wrap: wrap; gap: 8px; }
.field-row:last-child { border-bottom: none; }
.field-label { font-size: 0.8125rem; color: var(--text-muted); min-width: 100px; }
.field-value { font-size: 0.9375rem; color: var(--text); }
.field-placeholder { font-size: 0.875rem; color: var(--text-muted); font-style: italic; }

/* ── Referral box ────────────────────────────────── */
.referral-box { display: flex; align-items: center; gap: 12px; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 10px 14px; margin-top: 12px; }
.referral-url { flex: 1; font-size: 0.8125rem; color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ── Summary cards ───────────────────────────────── */
.summary-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 24px; }
.summary-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; padding: 20px 24px; }
.summary-label { font-size: 0.8125rem; color: var(--text-muted); margin-bottom: 8px; }
.summary-value { font-size: 1.5rem; font-weight: 600; color: var(--text); }

/* ── Table ───────────────────────────────────────── */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
th { text-align: left; padding: 10px 12px; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); border-bottom: 2px solid var(--border); }
td { padding: 12px; border-bottom: 1px solid var(--border); color: var(--text); }
tr:last-child td { border-bottom: none; }

/* ── Referral list ───────────────────────────────── */
.referral-list { display: flex; flex-direction: column; gap: 12px; }
.referral-card { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 16px 20px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.referral-name { font-weight: 500; font-size: 0.9375rem; }
.referral-meta { font-size: 0.8125rem; color: var(--text-muted); margin-top: 2px; }

/* ── Empty state ─────────────────────────────────── */
.empty-state { text-align: center; padding: 48px 24px; color: var(--text-muted); font-size: 0.9375rem; }

/* ── Hamburger / mobile ──────────────────────────– */
.hamburger { display: none; position: fixed; top: 16px; left: 16px; z-index: 200; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 8px; cursor: pointer; flex-direction: column; gap: 4px; }
.hamburger span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; }
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 99; }

@media (max-width: 767px) {
  .hamburger { display: flex; }
  .main { margin-left: 0; padding: 72px 20px 32px; }
  .sidebar { transform: translateX(-100%); transition: transform 0.25s; }
  .sidebar--open { transform: translateX(0); }
  .sidebar-overlay--visible { display: block; }
  .summary-grid { grid-template-columns: 1fr; }
}

/* ── Toast ───────────────────────────────────────── */
.toast { position: fixed; bottom: 24px; right: 24px; background: var(--text); color: #fff; padding: 12px 20px; border-radius: 6px; font-size: 0.875rem; opacity: 0; transition: opacity 0.2s; pointer-events: none; z-index: 300; }
.toast--visible { opacity: 1; pointer-events: auto; }