/* ============================================================
   SHOPESMART MEMBER PANEL — PREMIUM DESIGN SYSTEM
   Dark luxury theme with gold accents
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,300&display=swap');

/* ─── CSS Variables ─── */
:root {
  --bg-base:       #0a0d14;
  --bg-surface:    #111520;
  --bg-elevated:   #161b2a;
  --bg-card:       #1a2035;
  --bg-hover:      #1f2840;

  --gold:          #c9a84c;
  --gold-light:    #e0c472;
  --gold-dim:      #7a6028;
  --gold-glow:     rgba(201, 168, 76, 0.15);

  --accent-blue:   #3b82f6;
  --accent-green:  #22c55e;
  --accent-red:    #ef4444;
  --accent-amber:  #f59e0b;
  --accent-teal:   #14b8a6;

  --text-primary:  #f0ede8;
  --text-secondary:#9aa3b8;
  --text-muted:    #5a6278;

  --border:        rgba(255,255,255,0.07);
  --border-gold:   rgba(201,168,76,0.3);

  --sidebar-width: 270px;
  --radius-sm:     8px;
  --radius-md:     12px;
  --radius-lg:     18px;
  --radius-xl:     24px;

  --shadow-card:   0 4px 24px rgba(0,0,0,0.4);
  --shadow-gold:   0 0 30px rgba(201,168,76,0.12);
  --transition:    0.25s cubic-bezier(0.4,0,0.2,1);
}

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 15px;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--gold-dim); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold); }

/* ─── Layout Wrapper ─── */
.wrapper {
  display: flex;
  min-height: 100vh;
}

/* ─── Sidebar ─── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: var(--sidebar-width);
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  z-index: 1000;
  overflow-y: auto;
  overflow-x: hidden;
  transition: transform var(--transition);
  display: flex;
  flex-direction: column;
}

.sidebar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(135deg, var(--gold-glow) 0%, transparent 60%);
  pointer-events: none;
}

.sidebar-header {
  padding: 28px 24px 20px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.sidebar-header h5 {
  font-family: 'Syne', sans-serif;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--gold-light);
  letter-spacing: 0.04em;
  margin: 0 0 2px;
}

.sidebar-header small {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 500;
}

.sidebar-header .badge {
  font-size: 0.7rem;
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.sidebar .nav {
  padding: 12px 0;
  flex: 1;
}

.sidebar .nav-item {
  padding: 2px 12px;
}

.sidebar .nav-link {
  color: var(--text-secondary);
  padding: 11px 16px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.sidebar .nav-link i {
  width: 18px;
  text-align: center;
  font-size: 0.95rem;
  transition: color var(--transition);
  flex-shrink: 0;
}

.sidebar .nav-link:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.sidebar .nav-link.active,
.sidebar .nav-link:hover {
  color: var(--gold-light);
}

.sidebar .nav-link.active {
  background: var(--gold-glow);
  color: var(--gold-light);
}

.sidebar .nav-link.active::before {
  content: '';
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 3px;
  background: var(--gold);
  border-radius: 0 3px 3px 0;
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 999;
}

/* ─── Main Content ─── */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  background: var(--bg-base);
  display: flex;
  flex-direction: column;
}

/* ─── Top Navbar ─── */
.navbar {
  background: var(--bg-surface) !important;
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 64px;
  backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 900;
}

.navbar-brand {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--gold) !important;
  letter-spacing: 0.03em;
}

.navbar .text-white {
  color: var(--text-secondary) !important;
  font-size: 0.88rem;
  font-weight: 500;
}

.navbar .btn-danger {
  background: rgba(239,68,68,0.15) !important;
  border: 1px solid rgba(239,68,68,0.3) !important;
  color: #ef4444 !important;
  font-size: 0.8rem;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: all var(--transition);
}

.navbar .btn-danger:hover {
  background: rgba(239,68,68,0.25) !important;
  border-color: rgba(239,68,68,0.5) !important;
}

#sidebarToggle {
  background: transparent !important;
  border: 1px solid var(--border) !important;
  color: var(--text-secondary) !important;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
#sidebarToggle:hover { border-color: var(--gold-dim) !important; color: var(--gold) !important; }

/* ─── Content Area ─── */
.container-fluid.mt-3,
.container-fluid {
  padding: 28px 32px;
  max-width: 1400px;
}

/* ─── Page Header ─── */
.page-header {
  margin-bottom: 28px;
}
.page-header h1, .page-header h2 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--text-primary);
}
.page-header p { color: var(--text-secondary); font-size: 0.9rem; margin: 4px 0 0; }

/* ─── Cards ─── */
.card {
  background: var(--bg-card) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.card-header {
  background: var(--bg-elevated) !important;
  border-bottom: 1px solid var(--border) !important;
  padding: 16px 24px !important;
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.card-body {
  padding: 24px !important;
  color: var(--text-primary);
}

.card-footer {
  background: var(--bg-elevated) !important;
  border-top: 1px solid var(--border) !important;
  padding: 14px 24px !important;
}

/* ─── Stat Cards ─── */
.card.bg-primary,
.card.bg-success,
.card.bg-info,
.card.bg-warning,
.card.bg-secondary,
.card.bg-danger {
  border: none !important;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card.bg-primary,
.card.bg-success,
.card.bg-info,
.card.bg-warning,
.card.bg-secondary {
  background: var(--bg-card) !important;
  border: 1px solid var(--border) !important;
}

.card.bg-primary { border-left: 3px solid var(--accent-blue) !important; }
.card.bg-success { border-left: 3px solid var(--accent-green) !important; }
.card.bg-info    { border-left: 3px solid var(--accent-teal) !important; }
.card.bg-warning { border-left: 3px solid var(--accent-amber) !important; }
.card.bg-secondary { border-left: 3px solid var(--text-muted) !important; }

.card.bg-primary:hover,
.card.bg-success:hover,
.card.bg-info:hover,
.card.bg-warning:hover,
.card.bg-secondary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

.card.bg-primary h2,
.card.bg-success h2,
.card.bg-info h2,
.card.bg-warning h2,
.card.bg-secondary h2 {
  font-family: 'Syne', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  margin: 6px 0 0;
  color: var(--text-primary) !important;
}

.card.bg-primary h5,
.card.bg-success h5,
.card.bg-info h5,
.card.bg-warning h5,
.card.bg-secondary h5 {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary) !important;
  margin: 0;
}

.card.bg-primary h2 { color: var(--accent-blue) !important; }
.card.bg-success h2 { color: var(--accent-green) !important; }
.card.bg-info h2    { color: var(--accent-teal) !important; }
.card.bg-warning h2 { color: var(--accent-amber) !important; }
.card.bg-secondary h2 { color: var(--text-secondary) !important; }

/* Stat card icon decoration */
.card.bg-primary .card-body::after,
.card.bg-success .card-body::after,
.card.bg-info .card-body::after,
.card.bg-warning .card-body::after {
  content: '';
  position: absolute;
  right: -10px; top: -10px;
  width: 80px; height: 80px;
  border-radius: 50%;
  opacity: 0.06;
}
.card.bg-primary .card-body::after  { background: var(--accent-blue); }
.card.bg-success .card-body::after  { background: var(--accent-green); }
.card.bg-info .card-body::after     { background: var(--accent-teal); }
.card.bg-warning .card-body::after  { background: var(--accent-amber); }

/* ─── Alerts ─── */
.alert {
  border-radius: var(--radius-md) !important;
  border: none !important;
  font-size: 0.9rem;
}

.alert-info {
  background: rgba(59,130,246,0.1) !important;
  color: #93c5fd !important;
  border: 1px solid rgba(59,130,246,0.2) !important;
}

.alert-success {
  background: rgba(34,197,94,0.1) !important;
  color: #86efac !important;
  border: 1px solid rgba(34,197,94,0.2) !important;
}

.alert-danger {
  background: rgba(239,68,68,0.1) !important;
  color: #fca5a5 !important;
  border: 1px solid rgba(239,68,68,0.2) !important;
}

.alert-secondary {
  background: var(--bg-elevated) !important;
  color: var(--text-secondary) !important;
  border: 1px solid var(--border) !important;
}

.alert-warning {
  background: rgba(245,158,11,0.1) !important;
  color: #fcd34d !important;
  border: 1px solid rgba(245,158,11,0.2) !important;
}

.alert-link { color: inherit !important; text-decoration: underline; }

/* ─── Progress Bar ─── */
.progress {
  background: var(--bg-elevated) !important;
  border-radius: 99px;
  height: 6px !important;
  overflow: hidden;
}
.progress-bar {
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent-green), #4ade80) !important;
}

/* ─── Tables ─── */
.table {
  color: var(--text-primary) !important;
  border-color: var(--border) !important;
  margin: 0;
  font-size: 0.88rem;
}

.table thead th {
  background: var(--bg-elevated) !important;
  color: var(--text-muted) !important;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-color: var(--border) !important;
  padding: 12px 16px !important;
  white-space: nowrap;
}

.table tbody td {
  border-color: var(--border) !important;
  padding: 13px 16px !important;
  vertical-align: middle;
  color: var(--text-primary);
}

.table-striped > tbody > tr:nth-of-type(odd) > td {
  background: rgba(255,255,255,0.02) !important;
}

.table-hover > tbody > tr:hover > td {
  background: var(--bg-hover) !important;
}

.table-bordered td, .table-bordered th {
  border-color: var(--border) !important;
}

/* ─── Badges ─── */
.badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 20px;
  letter-spacing: 0.04em;
}

.badge.bg-success  { background: rgba(34,197,94,0.15) !important;  color: #86efac !important; border: 1px solid rgba(34,197,94,0.3); }
.badge.bg-warning  { background: rgba(245,158,11,0.15) !important; color: #fcd34d !important; border: 1px solid rgba(245,158,11,0.3); }
.badge.bg-danger   { background: rgba(239,68,68,0.15) !important;  color: #fca5a5 !important; border: 1px solid rgba(239,68,68,0.3); }
.badge.bg-info     { background: rgba(20,184,166,0.15) !important; color: #5eead4 !important; border: 1px solid rgba(20,184,166,0.3); }
.badge.bg-primary  { background: rgba(59,130,246,0.15) !important; color: #93c5fd !important; border: 1px solid rgba(59,130,246,0.3); }
.badge.bg-secondary{ background: rgba(148,163,184,0.1) !important; color: var(--text-secondary) !important; border: 1px solid var(--border); }

/* ─── Buttons ─── */
.btn {
  border-radius: var(--radius-sm) !important;
  font-weight: 600 !important;
  font-size: 0.875rem !important;
  transition: all var(--transition) !important;
  letter-spacing: 0.02em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%) !important;
  border: none !important;
  color: #0a0d14 !important;
  box-shadow: 0 4px 16px rgba(201,168,76,0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--gold-light) 0%, #f0d688 100%) !important;
  box-shadow: 0 6px 24px rgba(201,168,76,0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-elevated) !important;
  border: 1px solid var(--border) !important;
  color: var(--text-secondary) !important;
}
.btn-secondary:hover { background: var(--bg-hover) !important; color: var(--text-primary) !important; }

.btn-info {
  background: rgba(20,184,166,0.15) !important;
  border: 1px solid rgba(20,184,166,0.3) !important;
  color: #5eead4 !important;
}
.btn-info:hover { background: rgba(20,184,166,0.25) !important; transform: translateY(-1px); }

.btn-danger {
  background: rgba(239,68,68,0.15) !important;
  border: 1px solid rgba(239,68,68,0.3) !important;
  color: #fca5a5 !important;
}
.btn-danger:hover { background: rgba(239,68,68,0.25) !important; }

.btn-sm { padding: 6px 14px !important; font-size: 0.8rem !important; }

/* ─── Forms ─── */
.form-control, .form-select {
  background: var(--bg-elevated) !important;
  border: 1px solid var(--border) !important;
  color: var(--text-primary) !important;
  border-radius: var(--radius-sm) !important;
  padding: 10px 14px !important;
  font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus, .form-select:focus {
  background: var(--bg-elevated) !important;
  border-color: var(--gold-dim) !important;
  color: var(--text-primary) !important;
  box-shadow: 0 0 0 3px var(--gold-glow) !important;
  outline: none;
}

.form-control::placeholder { color: var(--text-muted) !important; }

.form-control[readonly] {
  background: var(--bg-surface) !important;
  color: var(--text-secondary) !important;
  cursor: default;
}

.form-select option {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

label {
  color: var(--text-secondary) !important;
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px !important;
  display: block;
}

.form-text {
  color: var(--text-muted) !important;
  font-size: 0.78rem;
  margin-top: 5px;
}

/* ─── Modal ─── */
.modal-content {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-gold) !important;
  border-radius: var(--radius-xl) !important;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6), var(--shadow-gold) !important;
}

.modal-header {
  background: var(--bg-elevated) !important;
  border-bottom: 1px solid var(--border) !important;
  padding: 20px 28px !important;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0 !important;
}

.modal-title {
  font-family: 'Syne', sans-serif !important;
  font-weight: 700 !important;
  font-size: 1.05rem !important;
  color: var(--text-primary) !important;
}

.modal-body { padding: 28px !important; }

.btn-close {
  filter: invert(1) !important;
  opacity: 0.5 !important;
}
.btn-close:hover { opacity: 1 !important; }

.modal-backdrop { background: rgba(0,0,0,0.7) !important; }
.modal-backdrop.show { backdrop-filter: blur(6px); }

/* ─── Binary Tree ─── */
.tree-node .card {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-gold) !important;
  border-radius: var(--radius-sm) !important;
  box-shadow: var(--shadow-gold);
  font-size: 0.78rem;
  padding: 10px 8px !important;
  min-width: 90px;
  transition: all var(--transition);
}

.tree-node .card:hover {
  background: var(--bg-hover) !important;
  transform: translateY(-2px);
}

.tree-node .card strong {
  color: var(--gold-light);
  font-family: 'Syne', sans-serif;
  font-size: 0.8rem;
}

.tree-children {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 8px;
  position: relative;
}

.tree-children::before {
  content: '';
  position: absolute;
  top: -8px; left: 50%;
  width: 1px; height: 8px;
  background: var(--border-gold);
  transform: translateX(-50%);
}

/* ─── Utility Classes ─── */
.text-muted { color: var(--text-muted) !important; }
.text-white { color: var(--text-primary) !important; }
.text-success { color: var(--accent-green) !important; }
.text-danger  { color: var(--accent-red) !important; }
.text-warning { color: var(--accent-amber) !important; }
.text-info    { color: var(--accent-teal) !important; }
.text-primary { color: var(--accent-blue) !important; }
hr { border-color: var(--border) !important; }

h4 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
}

/* ─── Gold Divider Section Header ─── */
.section-label {
  font-family: 'Syne', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--gold);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-gold);
}

/* ─── Auth Pages (Login / Register) ─── */
body.auth-page {
  background: var(--bg-base);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(201,168,76,0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(59,130,246,0.04) 0%, transparent 50%);
}

body.auth-page .container { padding: 24px; }

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card), var(--shadow-gold);
  overflow: hidden;
}

.auth-card .card-header {
  background: linear-gradient(135deg, var(--gold-dim) 0%, rgba(201,168,76,0.15) 100%) !important;
  padding: 24px 32px !important;
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gold-light) !important;
  border-bottom: 1px solid var(--border-gold) !important;
}

.auth-card .card-body {
  padding: 32px !important;
}

.auth-logo {
  font-family: 'Syne', sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--gold-light);
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}

.auth-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 32px;
}

.auth-link { color: var(--gold) !important; text-decoration: none; font-weight: 500; }
.auth-link:hover { color: var(--gold-light) !important; text-decoration: underline; }

/* ─── Page-level bg gradient ─── */
.bg-light {
  background: var(--bg-base) !important;
}

/* ─── Responsive: Tablet ─── */
@media (max-width: 991px) {
  .container-fluid.mt-3,
  .container-fluid {
    padding: 20px 20px;
  }
}

/* ─── Responsive: Mobile ─── */
@media (max-width: 768px) {
  :root { --sidebar-width: 270px; }

  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.active {
    transform: translateX(0);
    box-shadow: 4px 0 40px rgba(0,0,0,0.5);
  }

  .sidebar-overlay.active {
    display: block;
  }

  .main-content {
    margin-left: 0 !important;
  }

  .container-fluid.mt-3,
  .container-fluid {
    padding: 16px;
  }

  .card-body { padding: 16px !important; }
  .card-header { padding: 14px 16px !important; }

  .navbar { padding: 0 16px; }

  .table-responsive-stack td,
  .table-responsive-stack th { display: block; width: 100%; }

  .col-md-4, .col-md-6, .col-md-3 { margin-bottom: 12px; }

  h4 { font-size: 1rem; }

  .card.bg-primary h2,
  .card.bg-success h2,
  .card.bg-info h2,
  .card.bg-warning h2 { font-size: 1.6rem; }

  /* Stack table on mobile */
  .table-sm.mobile-stack thead { display: none; }
  .table-sm.mobile-stack tr {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    padding: 4px 0;
  }
  .table-sm.mobile-stack td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: none !important;
    padding: 8px 16px !important;
    font-size: 0.85rem;
  }
  .table-sm.mobile-stack td::before {
    content: attr(data-label);
    color: var(--text-muted);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    flex-shrink: 0;
    margin-right: 12px;
  }

  /* Modal full screen on mobile */
  .modal-dialog { margin: 8px !important; }
  .modal-content { border-radius: var(--radius-lg) !important; }
}

/* ─── Micro-animations ─── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.card { animation: fadeInUp 0.35s ease both; }
.row .card:nth-child(1) { animation-delay: 0.05s; }
.row .card:nth-child(2) { animation-delay: 0.10s; }
.row .card:nth-child(3) { animation-delay: 0.15s; }
.row .card:nth-child(4) { animation-delay: 0.20s; }

/* ─── Bootstrap Overrides ─── */
.row { --bs-gutter-x: 1.25rem; --bs-gutter-y: 0; }
.gap-3 { gap: 0.75rem !important; }