/* =============================================
   Admin Panel Stylesheet
   ============================================= */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg: #0a0a0a;
  --bg2: #111111;
  --bg3: #1a1a1a;
  --bg4: #222222;
  --blue: #3e6ae1;
  --teal: #00d4aa;
  --red: #ef4444;
  --yellow: #f59e0b;
  --text: #ffffff;
  --text2: #a0a0a0;
  --text3: #606060;
  --border: #2a2a2a;
  --grad: linear-gradient(90deg, #3e6ae1, #00d4aa);
  --r: 8px; --rm: 16px; --rl: 24px;
  --t: all 0.25s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; display: flex; }

/* ---- SIDEBAR ---- */
.admin-sidebar {
  width: 260px; background: var(--bg2); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; position: fixed; top: 0; bottom: 0; left: 0; z-index: 100;
  transition: var(--t);
}

.admin-logo {
  padding: 24px 20px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 10px;
  font-size: 1rem; font-weight: 700;
}

.admin-logo .logo-icon { width: 32px; height: 32px; background: var(--grad); border-radius: 7px; display: flex; align-items: center; justify-content: center; font-size: 15px; flex-shrink: 0; }
.admin-logo span { background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; font-size: 0.78rem; }

.admin-nav { flex: 1; padding: 16px 0; overflow-y: auto; }
.admin-nav-section { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--text3); padding: 12px 20px 6px; }

.admin-nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 20px; font-size: 0.88rem; font-weight: 500; color: var(--text2);
  cursor: pointer; transition: var(--t); border-left: 3px solid transparent;
  text-decoration: none;
}

.admin-nav-item:hover { background: rgba(255,255,255,0.04); color: var(--text); }
.admin-nav-item.active { background: rgba(62,106,225,0.1); color: var(--blue); border-left-color: var(--blue); }
.admin-nav-item .nav-icon { font-size: 1rem; width: 20px; text-align: center; }
.admin-nav-item .badge { margin-left: auto; background: var(--blue); color: white; border-radius: 100px; font-size: 0.68rem; font-weight: 700; padding: 2px 8px; min-width: 20px; text-align: center; }
.admin-nav-item .badge.red { background: var(--red); }

.admin-sidebar-footer { padding: 16px 20px; border-top: 1px solid var(--border); }
.admin-sidebar-user { display: flex; align-items: center; gap: 10px; font-size: 0.82rem; }
.admin-user-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--grad); display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700; color: white; flex-shrink: 0; }

/* ---- MAIN ---- */
.admin-main { margin-left: 260px; flex: 1; min-height: 100vh; }

.admin-topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,10,10,0.95); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 32px; height: 60px;
}

.topbar-title { font-size: 1.1rem; font-weight: 700; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }

.topbar-btn {
  display: flex; align-items: center; gap: 8px; padding: 8px 16px;
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--r);
  color: var(--text2); font-size: 0.82rem; font-weight: 600; cursor: pointer;
  transition: var(--t); font-family: inherit;
}
.topbar-btn:hover { border-color: var(--blue); color: var(--text); }

/* ---- CONTENT PANELS ---- */
.admin-content { padding: 32px; }
.admin-panel { display: none; }
.admin-panel.active { display: block; }

/* ---- STATS CARDS ---- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 32px; }

.stat-card {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--rm);
  padding: 20px 24px; transition: var(--t);
}

.stat-card:hover { border-color: rgba(62,106,225,0.3); transform: translateY(-2px); }
.stat-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; color: var(--text3); margin-bottom: 8px; }
.stat-value { font-size: 2rem; font-weight: 800; margin-bottom: 4px; background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.stat-change { font-size: 0.78rem; color: var(--teal); }

/* ---- ORDERS TABLE ---- */
.orders-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; flex-wrap: wrap; gap: 12px; }
.orders-title { font-size: 1rem; font-weight: 700; }
.orders-filters { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-btn { padding: 6px 14px; border-radius: 100px; border: 1px solid var(--border); background: transparent; color: var(--text2); font-size: 0.78rem; font-weight: 600; cursor: pointer; transition: var(--t); font-family: inherit; }
.filter-btn:hover, .filter-btn.active { background: rgba(62,106,225,0.1); border-color: var(--blue); color: var(--blue); }

.orders-table-wrap { background: var(--bg3); border: 1px solid var(--border); border-radius: var(--rm); overflow: hidden; overflow-x: auto; }
.orders-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; min-width: 700px; }
.orders-table th { padding: 12px 16px; background: var(--bg2); border-bottom: 1px solid var(--border); text-align: left; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; color: var(--text3); white-space: nowrap; }
.orders-table td { padding: 14px 16px; border-bottom: 1px solid rgba(255,255,255,0.04); vertical-align: top; }
.orders-table tr:last-child td { border-bottom: none; }
.orders-table tr:hover td { background: rgba(255,255,255,0.02); }

.order-ref-cell { font-family: monospace; font-size: 0.82rem; font-weight: 700; color: var(--blue); }
.order-customer-name { font-weight: 600; }
.order-customer-email { font-size: 0.78rem; color: var(--text3); margin-top: 2px; }

.status-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: 100px; font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.5px; white-space: nowrap;
}
.status-badge.paid { background: rgba(0,212,170,0.1); color: var(--teal); border: 1px solid rgba(0,212,170,0.3); }
.status-badge.pending { background: rgba(245,158,11,0.1); color: var(--yellow); border: 1px solid rgba(245,158,11,0.3); }
.status-badge.pending_payment { background: rgba(245,158,11,0.1); color: var(--yellow); border: 1px solid rgba(245,158,11,0.3); }
.status-badge.payment_initiated { background: rgba(62,106,225,0.1); color: var(--blue); border: 1px solid rgba(62,106,225,0.3); }
.status-badge.cancelled { background: rgba(239,68,68,0.1); color: var(--red); border: 1px solid rgba(239,68,68,0.3); }
.status-badge.installed { background: rgba(0,212,170,0.1); color: var(--teal); border: 1px solid rgba(0,212,170,0.3); }

.action-btns { display: flex; gap: 6px; }
.action-btn {
  padding: 5px 10px; border-radius: var(--r); border: 1px solid var(--border);
  background: transparent; color: var(--text2); font-size: 0.75rem; font-weight: 600;
  cursor: pointer; transition: var(--t); font-family: inherit; white-space: nowrap;
}
.action-btn:hover { border-color: var(--blue); color: var(--blue); }
.action-btn.danger:hover { border-color: var(--red); color: var(--red); }
.action-btn.success-btn:hover { border-color: var(--teal); color: var(--teal); }

.empty-table { text-align: center; padding: 48px; color: var(--text3); font-size: 0.9rem; }

/* ---- SETTINGS ---- */
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); gap: 24px; }

.settings-card {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--rm); padding: 28px;
}

.settings-card-title {
  font-size: 1rem; font-weight: 700; margin-bottom: 4px; display: flex; align-items: center; gap: 10px;
}

.settings-card-title .icon { font-size: 1.2rem; }
.settings-card-desc { font-size: 0.82rem; color: var(--text3); margin-bottom: 24px; }

.settings-field { margin-bottom: 16px; }
.settings-label { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text2); margin-bottom: 6px; display: flex; align-items: center; justify-content: space-between; }
.settings-input {
  width: 100%; background: var(--bg2); border: 1px solid var(--border); color: var(--text);
  border-radius: var(--r); padding: 11px 14px; font-size: 0.9rem; font-family: inherit;
  outline: none; transition: var(--t);
}
.settings-input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(62,106,225,0.15); }
.settings-input::placeholder { color: var(--text3); }
.settings-input.monospace { font-family: 'Courier New', monospace; font-size: 0.82rem; word-break: break-all; }

.settings-hint { font-size: 0.75rem; color: var(--text3); margin-top: 5px; }

.settings-save-btn {
  width: 100%; margin-top: 20px; padding: 11px 20px;
  background: var(--grad); color: white; border: none; border-radius: var(--r);
  font-size: 0.9rem; font-weight: 700; cursor: pointer; transition: var(--t); font-family: inherit;
}
.settings-save-btn:hover { opacity: 0.9; transform: translateY(-1px); }

.usdt-wallet-status {
  display: flex; align-items: center; gap: 6px; font-size: 0.75rem;
  padding: 4px 10px; border-radius: 100px;
}
.usdt-wallet-status.set { background: rgba(0,212,170,0.1); color: var(--teal); }
.usdt-wallet-status.unset { background: rgba(239,68,68,0.1); color: var(--red); }

/* ---- ORDER DETAIL MODAL ---- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.8); z-index: 1000;
  display: flex; align-items: center; justify-content: center; padding: 20px;
  opacity: 0; pointer-events: none; transition: var(--t);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal-box {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--rl);
  max-width: 640px; width: 100%; max-height: 85vh; overflow-y: auto;
  padding: 32px; position: relative;
  transform: scale(0.95); transition: var(--t);
}
.modal-overlay.open .modal-box { transform: scale(1); }

.modal-close { position: absolute; top: 20px; right: 20px; width: 32px; height: 32px; border-radius: 50%; background: var(--bg2); border: 1px solid var(--border); color: var(--text2); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 1rem; transition: var(--t); }
.modal-close:hover { border-color: var(--red); color: var(--red); }
.modal-title { font-size: 1.2rem; font-weight: 800; margin-bottom: 24px; }

.modal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
.modal-field { display: flex; flex-direction: column; gap: 3px; }
.modal-field-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.8px; color: var(--text3); font-weight: 700; }
.modal-field-value { font-size: 0.9rem; font-weight: 600; }
.modal-field-value.mono { font-family: monospace; color: var(--blue); }

.modal-status-select {
  background: var(--bg2); border: 1px solid var(--border); color: var(--text);
  border-radius: var(--r); padding: 8px 12px; font-size: 0.88rem; font-family: inherit;
  outline: none; cursor: pointer; transition: var(--t); width: 100%;
}
.modal-status-select:focus { border-color: var(--blue); }
.modal-status-select option { background: var(--bg2); }

.modal-update-btn { width: 100%; padding: 12px; background: var(--grad); color: white; border: none; border-radius: var(--r); font-size: 0.9rem; font-weight: 700; cursor: pointer; margin-top: 16px; transition: var(--t); font-family: inherit; }
.modal-update-btn:hover { opacity: 0.9; }

/* ---- LOGIN ---- */
.admin-login-overlay {
  position: fixed; inset: 0; background: var(--bg); z-index: 9999;
  display: flex; align-items: center; justify-content: center;
}
.admin-login-box {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--rl);
  padding: 40px; width: 100%; max-width: 400px; text-align: center;
}
.login-logo { font-size: 3rem; margin-bottom: 16px; }
.login-title { font-size: 1.4rem; font-weight: 800; margin-bottom: 6px; }
.login-subtitle { font-size: 0.88rem; color: var(--text2); margin-bottom: 28px; }
.login-field { text-align: left; margin-bottom: 16px; }
.login-label { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text2); margin-bottom: 6px; display: block; }
.login-input { width: 100%; background: var(--bg2); border: 1px solid var(--border); color: var(--text); border-radius: var(--r); padding: 12px 14px; font-size: 0.95rem; font-family: inherit; outline: none; transition: var(--t); }
.login-input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(62,106,225,0.15); }
.login-btn { width: 100%; background: var(--grad); color: white; border: none; border-radius: var(--r); padding: 13px; font-size: 0.95rem; font-weight: 700; cursor: pointer; margin-top: 20px; transition: var(--t); font-family: inherit; }
.login-btn:hover { opacity: 0.9; }
.login-error { color: var(--red); font-size: 0.82rem; margin-top: 10px; min-height: 18px; }

/* ---- NOTIFICATION ---- */
.notification { position: fixed; bottom: 24px; right: 24px; background: var(--bg3); border: 1px solid var(--border); border-radius: var(--rm); padding: 14px 20px; font-size: 0.88rem; box-shadow: 0 20px 60px rgba(0,0,0,0.5); z-index: 9999; transform: translateX(200%); transition: transform 0.4s cubic-bezier(0.4,0,0.2,1); max-width: 360px; }
.notification.show { transform: translateX(0); }
.notification.success { border-left: 3px solid var(--teal); }
.notification.error { border-left: 3px solid var(--red); }
.notification.info { border-left: 3px solid var(--blue); }

/* ---- HAMBURGER MOBILE ---- */
.sidebar-toggle { display: none; position: fixed; top: 14px; left: 16px; z-index: 200; background: var(--bg3); border: 1px solid var(--border); border-radius: var(--r); padding: 8px 10px; cursor: pointer; }
.sidebar-toggle span { display: block; width: 20px; height: 2px; background: var(--text); margin: 4px 0; border-radius: 2px; transition: var(--t); }

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .admin-sidebar { transform: translateX(-100%); }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-main { margin-left: 0; }
  .sidebar-toggle { display: block; }
  .admin-topbar { padding: 0 16px 0 56px; }
  .admin-content { padding: 16px; }
  .settings-grid { grid-template-columns: 1fr; }
  .modal-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .admin-login-box { padding: 28px 20px; }
}

/* ---- TOGGLE SWITCH ---- */
.toggle-switch {
  position: relative; display: inline-block;
  width: 48px; height: 26px; flex-shrink: 0; cursor: pointer;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0;
  background: var(--bg4); border: 1px solid var(--border);
  border-radius: 100px; transition: var(--t);
}
.toggle-slider::before {
  content: ''; position: absolute;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--text3); left: 3px; top: 3px;
  transition: var(--t);
}
.toggle-switch input:checked + .toggle-slider {
  background: rgba(0,212,170,0.2); border-color: var(--teal);
}
.toggle-switch input:checked + .toggle-slider::before {
  background: var(--teal); transform: translateX(22px);
}