* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  background: #f8fafc;
  color: #0f172a;
}

/* ── Container ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ══════════════════════════════
   NAVBAR
══════════════════════════════ */
.navbar {
  background: rgba(255,255,255,0.97);
  padding: 1rem 0;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow 0.3s, padding 0.3s, background 0.3s;
}
.navbar.scrolled {
  padding: 0.6rem 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
}

/* Dark mode navbar */
body.dark-mode .navbar {
  background: rgba(13,17,23,0.97) !important;
  box-shadow: 0 2px 10px rgba(0,0,0,0.3) !important;
}
body.dark-mode .navbar.scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.4) !important;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
}

.search-box {
  flex: 1;
  max-width: 400px;
}

.search-box input {
  width: 100%;
  padding: 10px 15px;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  background: #ffffff;
  color: #1e293b;
  transition: border-color 0.3s, background 0.3s, color 0.3s;
  font-family: inherit;
}

.search-box input::placeholder { color: #94a3b8; }

.search-box input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-shrink: 0;
}

.nav-links a {
  text-decoration: none;
  color: #334155;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-links a:hover { color: #2563eb; }

.nav-links a.nav-active {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

/* ── Hamburger (hidden on desktop) ── */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 1001;
  flex-shrink: 0;
}

.hamburger {
  width: 24px;
  height: 3px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-radius: 3px;
  transition: all 0.3s ease;
  display: block;
}

.mobile-menu-btn.active .hamburger:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.mobile-menu-btn.active .hamburger:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active .hamburger:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* ── User menu ── */
.user-menu { position: relative; }

.user-menu-btn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 25px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-size: 0.9rem;
}

.user-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
}

.user-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: white;
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.14);
  min-width: 230px;
  z-index: 200;
  overflow: hidden;
  border: 1px solid #e8edf5;
  animation: dropdownFade 0.2s ease;
}

@keyframes dropdownFade {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.user-dropdown-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.udh-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.22);
  border: 2px solid rgba(255,255,255,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: white;
  flex-shrink: 0;
}

.udh-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.udh-name {
  font-weight: 700;
  font-size: 0.9rem;
  color: white;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.udh-badge {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.35);
  color: rgba(255,255,255,0.95);
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 2px 8px;
  border-radius: 20px;
  width: fit-content;
}

.udh-email {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.75);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-dropdown a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  color: #334155;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  font-size: 0.875rem;
  font-weight: 500;
  background: white;
  border: none;
}

.user-dropdown a i {
  width: 16px;
  text-align: center;
  color: #667eea;
  font-size: 0.82rem;
  flex-shrink: 0;
}

.user-dropdown a:hover {
  background: #f8faff;
  color: #667eea;
}

.udh-divider {
  height: 1px;
  background: #f1f5f9;
  margin: 2px 0;
}

.udh-logout { color: #ef4444 !important; }
.udh-logout i { color: #ef4444 !important; }
.udh-logout:hover { background: #fef2f2 !important; color: #dc2626 !important; }
.udh-logout:hover i { color: #dc2626 !important; }

/* ══════════════════════════════
   MOBILE SIDEBAR
══════════════════════════════ */
.mobile-sidebar {
  position: fixed;
  top: 0;
  left: -300px;
  width: 280px;
  height: 100vh;
  background: #ffffff;
  box-shadow: 4px 0 24px rgba(0,0,0,0.12);
  z-index: 1002;
  transition: left 0.3s ease;
  overflow-y: auto;
}

.mobile-sidebar.active { left: 0; }

.mobile-sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.mobile-sidebar-overlay.active { opacity: 1; visibility: visible; }

body.sidebar-open { overflow: hidden; }

.mobile-sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: white;
}

.mobile-sidebar-header h2 { font-size: 1.4rem; margin: 0; }

.close-sidebar {
  background: none;
  border: none;
  color: white;
  font-size: 2rem;
  cursor: pointer;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background 0.2s;
  line-height: 1;
}

.close-sidebar:hover { background: rgba(255,255,255,0.2); }

.mobile-sidebar-content { padding: 12px 0; }

.mobile-sidebar-content > a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  color: #334155;
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  border-left: 3px solid transparent;
  transition: all 0.2s;
}

.mobile-sidebar-content > a:hover {
  background: rgba(37,99,235,0.06);
  border-left-color: #2563eb;
  color: #2563eb;
}

.mobile-sidebar-divider {
  height: 1px;
  background: #e2e8f0;
  margin: 10px 20px;
}

/* Mobile user section inside sidebar */
.mobile-user-section {
  margin: 0;
  padding: 0;
}

.mobile-user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  margin: 8px 16px;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border-radius: 10px;
}

.mobile-user-avatar {
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: white;
  flex-shrink: 0;
}

.mobile-user-name { font-weight: 700; color: #0c4a6e; font-size: 0.95rem; }

.mobile-user-email {
  font-size: 0.78rem;
  color: #0369a1;
  margin-top: 2px;
  word-break: break-all;
  line-height: 1.3;
}

.mobile-user-section a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 20px;
  color: #334155;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  border-left: 3px solid transparent;
  transition: all 0.2s;
}

.mobile-user-section a:hover {
  background: rgba(37,99,235,0.06);
  border-left-color: #2563eb;
  color: #2563eb;
}

/* ══════════════════════════════
   CONTENT WRAPPER & PURCHASE CARDS
══════════════════════════════ */
.content-wrapper {
  padding: 2.5rem 0;
  min-height: 80vh;
}

.container h1 {
  color: #1e293b;
  font-size: 28px;
  font-weight: 700;
  /* margin-bottom: 24px; */
}

#purchases {
  display: grid;
  /* grid-template-columns: repeat(2, 1fr); */
  gap: 20px;
}

.purchase-card {
  background: white;
  border: 1px solid #e2e8f0;
  padding: 20px;
  border-radius: 14px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
  box-sizing: border-box;
}

.purchase-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}

.purchase-card h3 {
  color: #1e293b;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
  padding-right: 90px;
  line-height: 1.4;
}

.purchase-card p {
  color: #64748b;
  font-size: 13px;
  margin: 6px 0;
  word-break: break-word;
  line-height: 1.5;
}

.status {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.completed { background: #10b981; color: white; }
.pending   { background: #f59e0b; color: white; }
.failed    { background: #ef4444; color: white; }

.price-tag { color: #10b981; font-weight: 700; font-size: 15px; }

.card-actions {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.ca-btn {
  flex: 1;
  min-width: 0;
  padding: 10px 8px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 12px;
  color: white;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-sizing: border-box;
  font-family: inherit;
  line-height: 1.3;
  transition: opacity 0.2s;
}

.ca-btn:hover { opacity: 0.88; }

/* Empty & shimmer states */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  background: white;
  border-radius: 14px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  grid-column: 1 / -1;
}

.empty-state h2 { color: #1e293b; font-size: 22px; margin-bottom: 10px; }
.empty-state p  { color: #64748b; font-size: 16px; }
.empty-state a {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  font-weight: 600;
}

.shimmer-card {
  background: white;
  border: 1px solid #e2e8f0;
  padding: 20px;
  border-radius: 14px;
  overflow: hidden;
  position: relative;
}

.shimmer-line {
  height: 18px;
  background: #e2e8f0;
  border-radius: 4px;
  margin: 10px 0;
  position: relative;
  overflow: hidden;
}

.shimmer-line::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.7), transparent);
  animation: shimmerMove 1.4s infinite;
}

@keyframes shimmerMove {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ══════════════════════════════
   FOOTER
══════════════════════════════ */
footer {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: white;
  padding: 3rem 0 1rem;
  margin-top: 3rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.footer-col h3.footer-logo {
  font-size: 1.6rem;
  margin-bottom: 0.8rem;
  font-weight: 700;
}

.footer-logo-link { text-decoration: none; display: inline-block; }

.logo-text {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-logo-text {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-col h4 {
  font-size: 1.1rem;
  margin-bottom: 0.8rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
}
.footer-desc   { color: #94a3b8; line-height: 1.6; font-size: 0.9rem; }
.footer-links  { list-style: none; }
.footer-links li { margin-bottom: 0.6rem; }

.footer-links a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s, padding-left 0.2s;
}

.footer-links a:hover { color: #60a5fa; padding-left: 4px; }

.footer-contact { color: #cbd5e1; margin-bottom: 0.7rem; font-size: 0.9rem; }

.social-icons { display: flex; gap: 0.8rem; margin-top: 1.2rem; }

.social-icons a {
  width: 42px;
  height: 42px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: white;
  text-decoration: none;
  transition: background 0.2s;
}

.social-icons a:hover { background: rgba(255,255,255,0.2); }

.footer-bottom {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: #94a3b8;
  font-size: 0.85rem;
}

/* ══════════════════════════════
   MOBILE — ≤ 768px
══════════════════════════════ */
@media (max-width: 768px) {

  /* Navbar: logo left, hamburger right */
  .navbar { padding: 0.75rem 0; }

  .navbar .container {
    flex-wrap: nowrap;
    justify-content: space-between;
    align-items: center;
    gap: 0;
  }

  .nav-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .logo { font-size: 1.5rem; }

  /* Show hamburger, hide desktop nav & search */
  .mobile-menu-btn { display: flex !important; }
  .nav-links       { display: none !important; }
  .search-box      { display: none !important; }

  /* Content: single column */
  .content-wrapper { padding: 1.2rem 0 2rem; }

  .container { padding: 0 14px; }

  .container h1 {
    font-size: 20px;

  }

  #purchases {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* Purchase card */
  .purchase-card { padding: 14px; }

  .purchase-card h3 {
    font-size: 14px;
    padding-right: 80px;
  }

  .purchase-card p { font-size: 12px; margin: 5px 0; }

  .status {
    font-size: 10px;
    padding: 4px 8px;
    top: 12px;
    right: 12px;
  }

  .price-tag { font-size: 13px; }

  /* Action buttons: stack vertically */
  .card-actions {
    flex-direction: column;
    gap: 7px;
    margin-top: 12px;
  }

  .ca-btn {
    flex: none;
    width: 100%;
    font-size: 13px;
    padding: 11px 10px;
  }

  /* Empty state */
  .empty-state { padding: 40px 16px; }
  .empty-state h2 { font-size: 18px; }
  .empty-state p  { font-size: 14px; }

  /* Footer: single column */
  footer { padding: 2rem 0 1rem; margin-top: 2rem; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.8rem;
    text-align: center;
  }

  .social-icons { justify-content: center; }

  .footer-col h3.footer-logo { font-size: 1.4rem; }
  .footer-col h4 { font-size: 1rem; }
  .footer-desc, .footer-links a, .footer-contact { font-size: 0.85rem; }
}

/* ══════════════════════════════
   MOBILE — ≤ 480px
══════════════════════════════ */
@media (max-width: 480px) {
  .container { padding: 0 12px; }
  .container h1 { font-size: 20px; }
  .purchase-card { padding: 12px; }
  .purchase-card h3 { font-size: 13px; padding-right: 72px; }
  .purchase-card p  { font-size: 11px; }
  .ca-btn { font-size: 12px; padding: 10px; }
}