/* ═══════════════════════════════════════════════════
   ADMIN PANEL — Premium Dark Theme
   ═══════════════════════════════════════════════════ */
:root {
  --bg: #0a0e1a;
  --bg-card: rgba(255,255,255,0.03);
  --bg-card-hover: rgba(255,255,255,0.06);
  --bg-sidebar: #0c1124;
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);
  --primary: #6c5ce7;
  --primary-glow: rgba(108,92,231,0.25);
  --secondary: #00cec9;
  --success: #00b894;
  --warning: #fdcb6e;
  --danger: #e17055;
  --text: #e0e6f0;
  --text-dim: #6b7a99;
  --text-muted: #3d4f6f;
  --radius: 12px;
  --radius-sm: 8px;
  --sidebar-w: 240px;
  --topbar-h: 60px;
  --font: 'Pretendard Variable', -apple-system, sans-serif;
}

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

html, body {
  height: 100%;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }

/* ─── LOGIN ─── */
.login-overlay {
  position: fixed; inset: 0; z-index: 9999;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  background-image: radial-gradient(ellipse at 30% 20%, rgba(108,92,231,0.08) 0%, transparent 60%),
                    radial-gradient(ellipse at 70% 80%, rgba(0,206,201,0.06) 0%, transparent 60%);
}
.login-card {
  width: 380px; padding: 48px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  backdrop-filter: blur(20px);
  text-align: center;
  animation: fadeUp .5s ease;
}
.login-logo { margin-bottom: 32px; }
.logo-icon { font-size: 48px; margin-bottom: 12px; }
.login-card h1 { font-size: 24px; font-weight: 700; }
.login-sub { color: var(--text-dim); font-size: 14px; margin-top: 6px; }
.input-group { margin-bottom: 20px; }
.input-group input {
  width: 100%; padding: 14px 18px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text); font-size: 15px; font-family: var(--font);
  outline: none; transition: border .2s;
}
.input-group input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-glow); }
.login-btn {
  width: 100%; padding: 14px;
  background: var(--primary);
  color: #fff; border: none; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; font-family: var(--font);
  cursor: pointer; transition: filter .2s;
}
.login-btn:hover { filter: brightness(1.15); }
.login-error { color: var(--danger); font-size: 13px; margin-top: 14px; }

/* ─── APP SHELL ─── */
.app-shell { display: flex; height: 100vh; }
.app-shell[hidden] { display: none; }

/* SIDEBAR */
.sidebar {
  width: var(--sidebar-w); height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  padding: 20px 12px;
  transition: transform .3s ease;
  z-index: 100;
  flex-shrink: 0;
}
.sidebar-brand {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; margin-bottom: 28px;
}
.brand-icon { font-size: 28px; }
.brand-text { font-size: 20px; font-weight: 700; letter-spacing: -.5px; }
.sidebar-nav { flex: 1; display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px;
  color: var(--text-dim); text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500;
  transition: all .2s;
  border: none; background: none; cursor: pointer;
  font-family: var(--font); width: 100%; text-align: left;
}
.nav-item svg { width: 20px; height: 20px; flex-shrink: 0; }
.nav-item:hover { background: var(--bg-card-hover); color: var(--text); }
.nav-item.active { background: var(--primary-glow); color: var(--primary); }
.logout-btn { margin-top: auto; color: var(--danger); opacity: .7; }
.logout-btn:hover { opacity: 1; background: rgba(225,112,85,.1); }

/* MAIN */
.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.topbar {
  height: var(--topbar-h); min-height: var(--topbar-h);
  display: flex; align-items: center; gap: 16px;
  padding: 0 28px;
  border-bottom: 1px solid var(--border);
  background: rgba(10,14,26,.8);
  backdrop-filter: blur(12px);
}
.sidebar-toggle { display: none; background: none; border: none; color: var(--text); font-size: 22px; cursor: pointer; }
.page-title { font-size: 18px; font-weight: 700; flex: 1; }
.topbar-right { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-dim); }
.status-dot { width: 8px; height: 8px; background: var(--success); border-radius: 50%; animation: pulse 2s infinite; }
.content { flex: 1; overflow-y: auto; padding: 28px; }

/* ─── CARDS / STATS ─── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px; margin-bottom: 28px;
}
.stat-card {
  padding: 22px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border .2s, transform .2s;
}
.stat-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.stat-label { font-size: 13px; color: var(--text-dim); margin-bottom: 8px; }
.stat-value { font-size: 26px; font-weight: 700; letter-spacing: -.5px; }
.stat-value.primary { color: var(--primary); }
.stat-value.secondary { color: var(--secondary); }
.stat-value.success { color: var(--success); }
.stat-value.warning { color: var(--warning); }
.stat-value.danger { color: var(--danger); }

.card {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 20px;
}
.card-title {
  font-size: 16px; font-weight: 700;
  margin-bottom: 18px;
  display: flex; align-items: center; gap: 8px;
}

/* ─── TABLE ─── */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th {
  text-align: left;
  padding: 12px 14px;
  font-weight: 600;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  white-space: nowrap;
}
tr:hover td { background: var(--bg-card-hover); }
.clickable-row { cursor: pointer; }

/* ─── BADGES ─── */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px; font-weight: 600;
  letter-spacing: .3px;
}
.badge-charge { background: rgba(0,184,148,.15); color: var(--success); }
.badge-withdraw { background: rgba(225,112,85,.15); color: var(--danger); }
.badge-rate { background: rgba(253,203,110,.15); color: var(--warning); }
.badge-commission { background: rgba(108,92,231,.15); color: var(--primary); }
.badge-admin { background: rgba(108,92,231,.2); color: var(--primary); }
.badge-external { background: rgba(162,155,254,.2); color: #a29bfe; }
.badge-agent { background: rgba(0,206,201,.2); color: var(--secondary); }
.badge-user { background: rgba(255,255,255,.06); color: var(--text-dim); }

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text); font-size: 13px; font-weight: 500;
  font-family: var(--font); cursor: pointer;
  transition: all .2s;
}
.btn:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { filter: brightness(1.15); }
.btn-danger { color: var(--danger); border-color: rgba(225,112,85,.3); }
.btn-danger:hover { background: rgba(225,112,85,.1); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

/* ─── FORMS ─── */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 6px; font-weight: 500; }
.form-input, .form-select {
  width: 100%; padding: 10px 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text); font-size: 14px; font-family: var(--font);
  outline: none; transition: border .2s;
}
.form-input:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.form-select option { background: #1a1f35; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ─── TREE ─── */
.tree-container {
  width: 100%; height: calc(100vh - var(--topbar-h) - 56px);
  overflow: hidden; position: relative;
}
.tree-container svg { width: 100%; height: 100%; }
.tree-node { cursor: pointer; }
.tree-node rect {
  fill: var(--bg-card);
  stroke: var(--border);
  stroke-width: 1.5;
  rx: 8;
  transition: stroke .2s, fill .2s;
}
.tree-node.role-admin rect { stroke: var(--primary); stroke-width: 2; }
.tree-node.role-external rect { stroke: #a29bfe; stroke-width: 1.5; }
.tree-node.role-distributor rect { stroke: var(--secondary); }
.tree-node.role-user rect { stroke: var(--border); }

.tree-node:hover rect { stroke: var(--primary); fill: var(--bg-card-hover); }
.tree-node text { fill: var(--text); font-family: var(--font); }
.tree-node .node-name { font-size: 13px; font-weight: 700; }
.tree-node.role-admin .node-name { fill: var(--primary); }
.tree-node.role-external .node-name { fill: #a29bfe; }
.tree-node.role-distributor .node-name { fill: var(--secondary); }

.tree-node .node-info { font-size: 10px; fill: var(--text-dim); }
.tree-link {
  fill: none;
  stroke: var(--text-muted);
  stroke-width: 1.5;
  stroke-opacity: .5;
}
.tree-controls {
  position: absolute; top: 12px; right: 12px;
  display: flex; gap: 6px; z-index: 10;
}

/* ─── CHAT VIEWER ─── */
.chat-container {
  max-width: 600px;
  margin: 0 auto;
  display: flex; flex-direction: column; gap: 4px;
}
.chat-date {
  text-align: center;
  font-size: 11px; color: var(--text-muted);
  padding: 12px 0 6px;
}
.chat-bubble {
  max-width: 75%;
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.5;
  animation: fadeUp .3s ease;
  position: relative;
}
.chat-bubble.in {
  align-self: flex-start;
  background: rgba(255,255,255,0.06);
  border-bottom-left-radius: 4px;
}
.chat-bubble.out {
  align-self: flex-end;
  background: rgba(108,92,231,.2);
  border-bottom-right-radius: 4px;
}
.chat-time {
  font-size: 10px; color: var(--text-muted);
  margin-top: 4px;
  text-align: right;
}
.chat-empty {
  text-align: center; padding: 60px 20px;
  color: var(--text-muted); font-size: 14px;
}

/* ─── MODAL ─── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
}
.modal-overlay[hidden] { display: none; }
.modal {
  width: 90%; max-width: 500px;
  background: #141928;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  animation: fadeUp .25s ease;
}
.modal-title { font-size: 18px; font-weight: 700; margin-bottom: 20px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 24px; }

/* ─── TOAST ─── */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%);
  padding: 12px 24px;
  background: #1e2540;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  z-index: 2000;
  animation: fadeUp .3s ease;
  pointer-events: none;
}
.toast[hidden] { display: none; }

/* ─── USER DETAIL ─── */
.detail-header {
  display: flex; align-items: center; gap: 20px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 20px;
}
.detail-avatar {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 700;
}
.detail-name { font-size: 20px; font-weight: 700; }
.detail-id { font-size: 13px; color: var(--text-dim); margin-top: 2px; }
.detail-balance {
  margin-left: auto;
  text-align: right;
}
.detail-balance-value { font-size: 28px; font-weight: 700; color: var(--secondary); }
.detail-balance-label { font-size: 12px; color: var(--text-dim); }
.detail-tabs {
  display: flex; gap: 0; margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.detail-tab {
  padding: 12px 20px;
  font-size: 14px; font-weight: 500;
  color: var(--text-dim);
  background: none; border: none; border-bottom: 2px solid transparent;
  cursor: pointer; font-family: var(--font);
  transition: all .2s;
}
.detail-tab:hover { color: var(--text); }
.detail-tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.detail-section { display: none; }
.detail-section.active { display: block; }

/* ─── COMMISSION CONFIG ─── */
.level-row {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}
.level-num {
  width: 36px; height: 36px;
  background: var(--primary-glow);
  color: var(--primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px;
  flex-shrink: 0;
}
.level-label { flex: 1; font-size: 14px; }
.level-input {
  width: 90px; padding: 8px 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text); font-size: 14px;
  text-align: right; outline: none;
  font-family: var(--font);
}
.level-input:focus { border-color: var(--primary); }

/* ─── EMPTY STATE ─── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state .empty-icon { font-size: 48px; margin-bottom: 16px; opacity: .4; }
.empty-state p { font-size: 14px; }

/* ─── ANIMATIONS ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}
.fade-in { animation: fadeUp .35s ease; }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  .sidebar {
    position: fixed; left: 0; top: 0;
    transform: translateX(-100%);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-toggle { display: block; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .detail-header { flex-direction: column; text-align: center; }
  .detail-balance { margin-left: 0; text-align: center; }
}