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

:root {
  --bg: #0f0f1a;
  --bg-card: #1a1a2e;
  --bg-hover: #252542;
  --primary: #e94560;
  --primary-dark: #c73e54;
  --secondary: #0f3460;
  --accent: #533483;
  --text: #eaeaea;
  --text-muted: #a0a0b0;
  --success: #4ecca3;
  --danger: #e94560;
  --border: #2a2a4a;
  --shadow: 0 4px 20px rgba(0,0,0,0.4);
  --radius: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 16px;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-muted);
}

.user-info .name {
  color: var(--text);
  font-weight: 600;
}

/* Cards */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.5);
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.card-meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.card-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.card-desc {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 16px;
  line-height: 1.6;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  color: white;
}

.btn-primary {
  background: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: scale(1.02);
}

.btn-success {
  background: var(--success);
  color: var(--bg);
}

.btn-success:hover {
  filter: brightness(1.1);
}

.btn-danger {
  background: var(--danger);
}

.btn-danger:hover {
  filter: brightness(1.1);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-muted);
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 15px;
  transition: border-color 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
}

.form-input::placeholder {
  color: #555;
}

/* Event actions */
.event-actions {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

.going-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(78, 204, 163, 0.15);
  color: var(--success);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}

.not-going-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(233, 69, 96, 0.15);
  color: var(--danger);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}

/* Attendees list */
.attendees-list {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.attendees-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.attendee-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.attendee-item:last-child {
  border-bottom: none;
}

.attendee-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

.attendee-info {
  flex: 1;
  min-width: 0;
}

.attendee-name {
  font-weight: 600;
  font-size: 14px;
}

.attendee-meta {
  font-size: 12px;
  color: var(--text-muted);
}

.attendee-vk {
  color: var(--primary);
  text-decoration: none;
  font-size: 12px;
}

.attendee-vk:hover {
  text-decoration: underline;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--bg);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
}

.stat-value {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* History */
.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.history-item:last-child {
  border-bottom: none;
}

.history-title {
  font-weight: 600;
  font-size: 14px;
}

.history-date {
  font-size: 12px;
  color: var(--text-muted);
}

.history-status {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 12px;
}

.history-status.going {
  background: rgba(78, 204, 163, 0.15);
  color: var(--success);
}

.history-status.not-going {
  background: rgba(233, 69, 96, 0.15);
  color: var(--danger);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-card);
  padding: 4px;
  border-radius: 12px;
  margin-bottom: 20px;
}

.tab {
  flex: 1;
  padding: 10px;
  text-align: center;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-muted);
  border: none;
  background: transparent;
}

.tab.active {
  background: var(--primary);
  color: white;
}

/* Admin panel */
.admin-section {
  margin-bottom: 24px;
}

.admin-section-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.5;
}

/* Loading */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid var(--border);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  animation: slideUp 0.3s ease;
  box-shadow: var(--shadow);
}

.toast.success {
  background: var(--success);
  color: var(--bg);
}

.toast.error {
  background: var(--danger);
  color: white;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 480px) {
  .container {
    padding: 12px;
  }
  
  .card {
    padding: 16px;
  }
  
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}