/* ============================================================
   ADMIN DASHBOARD CSS — Fashion Coupon System
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --neon: #00ff99;
  --neon-dim: rgba(0,255,153,0.1);
  --neon-glow: 0 0 20px rgba(0,255,153,0.3);
  --sidebar-w: 260px;
  --sidebar-bg: #08090d;
  --topbar-h: 65px;
  --dark-bg: #0a0b0f;
  --card-bg: rgba(255,255,255,0.03);
  --card-border: rgba(255,255,255,0.07);
  --card-hover: rgba(255,255,255,0.055);
  --text: #e8e8ec;
  --text-muted: rgba(232,232,236,0.45);
  --red: #ff4466; --orange: #ff9933; --blue: #3399ff; --purple: #a855f7;
  --transition: 0.25s ease;
  --radius: 14px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body.admin-body {
  font-family: 'Inter', sans-serif;
  background: var(--dark-bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,255,153,0.2); border-radius: 3px; }

/* ---- SIDEBAR ---- */
.admin-sidebar {
  position: fixed; left: 0; top: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  border-right: 1px solid rgba(255,255,255,0.05);
  display: flex; flex-direction: column;
  z-index: 200;
  transition: transform var(--transition);
  overflow-y: auto;
}

.sidebar-brand {
  display: flex; align-items: center; gap: 12px;
  padding: 22px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  flex-shrink: 0;
}
.brand-icon {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--neon), #00cc77);
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: #000; flex-shrink: 0;
}
.brand-name { font-size: 0.95rem; font-weight: 700; color: #fff; line-height: 1.2; }
.brand-sub { font-size: 0.68rem; color: rgba(255,255,255,0.3); }

.sidebar-nav {
  padding: 16px 12px;
  flex: 1;
}

.nav-section-label {
  font-size: 0.62rem; font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; color: rgba(255,255,255,0.2);
  padding: 16px 8px 6px;
}

.sidebar-nav .nav-link {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: 10px;
  color: rgba(255,255,255,0.5); font-size: 0.875rem; font-weight: 500;
  transition: all var(--transition); margin-bottom: 2px; text-decoration: none;
}
.sidebar-nav .nav-link i { width: 20px; text-align: center; font-size: 15px; }
.sidebar-nav .nav-link:hover { background: rgba(255,255,255,0.05); color: #fff; }
.sidebar-nav .nav-link.active {
  background: var(--neon-dim); color: var(--neon);
  box-shadow: 0 0 0 1px rgba(0,255,153,0.15);
}
.sidebar-nav .nav-link.active i { color: var(--neon); }
.sidebar-nav .nav-link-danger:hover { background: rgba(255,68,102,0.1); color: var(--red); }

/* ---- MAIN ---- */
.admin-main {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex; flex-direction: column;
  transition: margin var(--transition);
}

/* ---- TOPBAR ---- */
.admin-topbar {
  height: var(--topbar-h);
  background: rgba(10,11,15,0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  display: flex; align-items: center;
  padding: 0 24px;
  position: sticky; top: 0; z-index: 100;
  gap: 16px;
}
.sidebar-toggle {
  display: none; background: none; border: none;
  color: rgba(255,255,255,0.5); font-size: 18px; cursor: pointer;
  padding: 8px; border-radius: 8px;
  transition: color var(--transition);
}
.sidebar-toggle:hover { color: var(--neon); }
.topbar-title { font-size: 1rem; font-weight: 600; color: #fff; flex: 1; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.admin-avatar {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08);
  border-radius: 50px; padding: 7px 14px;
  font-size: 0.82rem; font-weight: 500; color: rgba(255,255,255,0.7);
}
.admin-avatar i { color: var(--neon); }

/* ---- CONTENT ---- */
.admin-content { padding: 28px 24px; flex: 1; }

/* ---- STATS CARDS ---- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-bottom: 28px; }

.stat-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 24px 20px;
  position: relative; overflow: hidden;
  transition: all var(--transition);
}
.stat-card:hover { background: var(--card-hover); transform: translateY(-2px); }
.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
}
.stat-card.neon::before { background: linear-gradient(90deg, transparent, var(--neon), transparent); }
.stat-card.red::before { background: linear-gradient(90deg, transparent, var(--red), transparent); }
.stat-card.orange::before { background: linear-gradient(90deg, transparent, var(--orange), transparent); }
.stat-card.blue::before { background: linear-gradient(90deg, transparent, var(--blue), transparent); }
.stat-card.purple::before { background: linear-gradient(90deg, transparent, var(--purple), transparent); }

.stat-icon {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; margin-bottom: 16px;
}
.stat-icon.neon { background: rgba(0,255,153,0.12); color: var(--neon); }
.stat-icon.red { background: rgba(255,68,102,0.12); color: var(--red); }
.stat-icon.orange { background: rgba(255,153,51,0.12); color: var(--orange); }
.stat-icon.blue { background: rgba(51,153,255,0.12); color: var(--blue); }
.stat-icon.purple { background: rgba(168,85,247,0.12); color: var(--purple); }

.stat-value { font-size: 2rem; font-weight: 800; color: #fff; line-height: 1; margin-bottom: 6px; }
.stat-label { font-size: 0.78rem; font-weight: 500; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

/* ---- CHART CARDS ---- */
.chart-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 24px;
}
.chart-card-title { font-size: 0.9rem; font-weight: 600; color: #fff; margin-bottom: 20px; }

/* ---- DATA TABLE ---- */
.data-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); overflow: hidden;
}
.data-card-header {
  padding: 20px 24px; border-bottom: 1px solid rgba(255,255,255,0.05);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.data-card-title { font-size: 0.95rem; font-weight: 600; color: #fff; }

.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th {
  padding: 14px 16px; font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.8px;
  color: var(--text-muted); background: rgba(255,255,255,0.025);
  border-bottom: 1px solid rgba(255,255,255,0.06); white-space: nowrap;
}
.admin-table td {
  padding: 14px 16px; font-size: 0.85rem; color: rgba(255,255,255,0.75);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  vertical-align: middle;
}
.admin-table tbody tr { transition: background var(--transition); }
.admin-table tbody tr:hover { background: rgba(255,255,255,0.025); }
.admin-table tbody tr:last-child td { border-bottom: none; }

.coupon-code-badge {
  font-family: 'Courier New', monospace; font-size: 0.82rem; font-weight: 700;
  letter-spacing: 1px; color: var(--neon);
  background: rgba(0,255,153,0.08); border: 1px solid rgba(0,255,153,0.15);
  border-radius: 6px; padding: 4px 10px;
}

/* Status Badges */
.status-badge { display: inline-block; padding: 4px 12px; border-radius: 50px; font-size: 0.7rem; font-weight: 700; letter-spacing: 0.5px; text-transform: uppercase; }
.badge-active  { background: rgba(0,255,153,0.12); color: var(--neon); border: 1px solid rgba(0,255,153,0.25); }
.badge-used    { background: rgba(255,68,102,0.12); color: var(--red); border: 1px solid rgba(255,68,102,0.25); }
.badge-expired { background: rgba(255,153,51,0.12); color: var(--orange); border: 1px solid rgba(255,153,51,0.25); }

/* Action Buttons */
.action-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 8px; border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04); color: rgba(255,255,255,0.5);
  font-size: 13px; cursor: pointer; transition: all var(--transition); text-decoration: none;
}
.action-btn:hover { color: #fff; border-color: rgba(255,255,255,0.2); }
.action-btn.used:hover { background: rgba(255,68,102,0.1); border-color: var(--red); color: var(--red); }
.action-btn.active:hover { background: var(--neon-dim); border-color: var(--neon); color: var(--neon); }
.action-btn.edit:hover { background: rgba(51,153,255,0.1); border-color: var(--blue); color: var(--blue); }
.action-btn.delete:hover { background: rgba(255,68,102,0.1); border-color: var(--red); color: var(--red); }
.action-btn.view:hover { background: rgba(168,85,247,0.1); border-color: var(--purple); color: var(--purple); }
.action-btn.qr:hover { background: rgba(255,153,51,0.1); border-color: var(--orange); color: var(--orange); }

/* ---- SEARCH / FILTER BAR ---- */
.filter-bar {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
}
.search-input-wrap { position: relative; flex: 1; min-width: 200px; }
.search-input {
  width: 100%;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px; padding: 10px 14px 10px 40px;
  color: #fff; font-size: 0.875rem; font-family: 'Inter', sans-serif; outline: none;
  transition: all var(--transition);
}
.search-input:focus { border-color: rgba(0,255,153,0.3); background: rgba(0,255,153,0.03); }
.search-input::placeholder { color: rgba(255,255,255,0.2); }
.search-icon { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: rgba(255,255,255,0.25); font-size: 14px; }

.filter-select {
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px; padding: 10px 14px; color: #fff;
  font-size: 0.875rem; font-family: 'Inter', sans-serif; outline: none;
  cursor: pointer; min-width: 140px;
  transition: all var(--transition);
}
.filter-select:focus { border-color: rgba(0,255,153,0.3); }
.filter-select option { background: #1a1b20; color: #fff; }

/* ---- FORMS ---- */
.admin-form-group { margin-bottom: 20px; }
.admin-form-label { display: block; font-size: 0.8rem; font-weight: 600; color: rgba(255,255,255,0.55); text-transform: uppercase; letter-spacing: 0.6px; margin-bottom: 8px; }
.admin-form-control {
  width: 100%;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px; padding: 12px 16px; color: #fff;
  font-size: 0.9rem; font-family: 'Inter', sans-serif; outline: none;
  transition: all var(--transition);
}
.admin-form-control:focus { border-color: rgba(0,255,153,0.4); background: rgba(0,255,153,0.03); box-shadow: 0 0 0 3px rgba(0,255,153,0.07); }
.admin-form-control::placeholder { color: rgba(255,255,255,0.2); }
select.admin-form-control option { background: #1a1b20; }

/* ---- BUTTONS ---- */
.btn-neon-admin {
  background: linear-gradient(135deg, var(--neon), #00cc77);
  color: #000; border: none; border-radius: 10px;
  padding: 10px 20px; font-size: 0.875rem; font-weight: 700;
  cursor: pointer; transition: all var(--transition);
  display: inline-flex; align-items: center; gap: 7px;
  text-decoration: none;
}
.btn-neon-admin:hover { box-shadow: var(--neon-glow); transform: translateY(-1px); color: #000; }

.btn-ghost {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.7); border-radius: 10px;
  padding: 10px 20px; font-size: 0.875rem; font-weight: 500;
  cursor: pointer; transition: all var(--transition);
  display: inline-flex; align-items: center; gap: 7px;
  text-decoration: none;
}
.btn-ghost:hover { background: rgba(255,255,255,0.08); color: #fff; border-color: rgba(255,255,255,0.18); }
.btn-danger-ghost { background: rgba(255,68,102,0.08); border: 1px solid rgba(255,68,102,0.2); color: var(--red); border-radius: 10px; padding: 10px 20px; font-size: 0.875rem; font-weight: 500; cursor: pointer; transition: all var(--transition); }
.btn-danger-ghost:hover { background: rgba(255,68,102,0.15); }

/* ---- MODALS ---- */
.modal-content {
  background: #12131a; border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px; color: #fff;
}
.modal-header { border-bottom: 1px solid rgba(255,255,255,0.07); padding: 20px 24px; }
.modal-footer { border-top: 1px solid rgba(255,255,255,0.07); padding: 16px 24px; }
.btn-close { filter: invert(1); }

/* ---- UPLOAD AREA ---- */
.upload-area {
  border: 2px dashed rgba(255,255,255,0.12); border-radius: 16px;
  padding: 60px 40px; text-align: center;
  cursor: pointer; transition: all var(--transition);
  background: rgba(255,255,255,0.02);
  position: relative;
}
.upload-area:hover, .upload-area.dragover {
  border-color: var(--neon); background: rgba(0,255,153,0.04);
}
.upload-icon { font-size: 48px; color: rgba(0,255,153,0.4); margin-bottom: 16px; }
.upload-title { font-size: 1.1rem; font-weight: 600; color: #fff; margin-bottom: 6px; }
.upload-sub { font-size: 0.82rem; color: var(--text-muted); }
.upload-area input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }

/* ---- PROGRESS BAR ---- */
.import-progress { margin-top: 24px; }
.progress-custom { background: rgba(255,255,255,0.06); border-radius: 50px; height: 8px; overflow: hidden; }
.progress-bar-neon {
  height: 100%; background: linear-gradient(90deg, var(--neon), #00cc77);
  border-radius: 50px; transition: width 0.4s ease;
  box-shadow: 0 0 10px rgba(0,255,153,0.4);
}

/* ---- QR GRID ---- */
.qr-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px; }
.qr-item {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 20px; text-align: center;
  transition: all var(--transition);
}
.qr-item:hover { background: var(--card-hover); border-color: rgba(0,255,153,0.15); transform: translateY(-2px); }
.qr-item canvas, .qr-item img { border-radius: 8px; max-width: 100%; }
.qr-code-label { font-family: 'Courier New', monospace; font-size: 0.82rem; font-weight: 700; color: var(--neon); margin-top: 10px; }
.qr-offer-label { font-size: 0.72rem; color: var(--text-muted); margin-top: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---- PAGE HEADER ---- */
.page-header { margin-bottom: 24px; }
.page-header-title { font-size: 1.5rem; font-weight: 800; color: #fff; margin-bottom: 4px; }
.page-header-sub { font-size: 0.85rem; color: var(--text-muted); }

/* ---- Pagination ---- */
.page-link {
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.6); border-radius: 8px !important; margin: 0 2px;
  transition: all var(--transition);
}
.page-link:hover { background: var(--neon-dim); border-color: rgba(0,255,153,0.3); color: var(--neon); }
.page-item.active .page-link { background: var(--neon-dim); border-color: var(--neon); color: var(--neon); }
.page-item.disabled .page-link { opacity: 0.35; }

/* ---- LOGIN PAGE ---- */
.login-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: var(--dark-bg); position: relative; overflow: hidden;
}
.login-card {
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07);
  backdrop-filter: blur(20px); border-radius: 24px;
  padding: 48px 40px; width: 100%; max-width: 420px; position: relative;
}
.login-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon), transparent);
}

/* ---- ALERT OVERLAY ---- */
.sidebar-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.5); z-index: 190;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 992px) {
  .admin-sidebar { transform: translateX(-100%); }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-main { margin-left: 0; }
  .sidebar-toggle { display: flex; align-items: center; justify-content: center; }
  .sidebar-overlay.show { display: block; }
}
@media (max-width: 768px) {
  .admin-content { padding: 20px 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .data-card-header { flex-direction: column; align-items: flex-start; }
  .admin-table { display: block; overflow-x: auto; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .search-input-wrap { min-width: unset; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .login-card { padding: 32px 24px; margin: 20px; }
}