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

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #8b5cf6;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: #334155;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.hidden {
  display: none !important;
}

/* Loading */
.loading {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Login Screen */
.login-container {
  max-width: 400px;
  margin: 100px auto;
  padding: 40px;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.login-container h1 {
  text-align: center;
  margin-bottom: 8px;
  font-size: 32px;
}

.subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: 14px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.tab {
  flex: 1;
  padding: 12px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s;
}

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

.test-credentials {
  margin-top: 24px;
  padding: 16px;
  background: var(--bg);
  border-radius: 8px;
  text-align: center;
}

.test-credentials p {
  color: var(--text-muted);
  font-size: 12px;
  margin-bottom: 8px;
}

.test-credentials code {
  color: var(--primary);
  font-size: 14px;
}

/* Forms */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
  font-weight: 500;
  font-size: 14px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.2s;
}

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

.form-group textarea {
  min-height: 80px;
  resize: vertical;
}

.form-group small {
  display: block;
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 12px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-section {
  margin-bottom: 32px;
  padding: 24px;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.form-section h3 {
  margin-bottom: 20px;
  font-size: 18px;
}

/* Buttons */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

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

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

.btn-secondary {
  background: var(--bg-hover);
  color: var(--text);
}

.btn-secondary:hover {
  background: var(--border);
}

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

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

.btn-small {
  padding: 8px 16px;
  font-size: 12px;
}

.btn-delete {
  background: transparent;
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 8px 16px;
  font-size: 12px;
}

.btn-delete:hover {
  background: var(--danger);
  color: white;
}

.btn-large {
  width: 100%;
  padding: 16px;
  font-size: 16px;
}

/* Header */
.header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header h1 {
  font-size: 24px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-info span {
  color: var(--text-muted);
  font-size: 14px;
}

/* Navigation */
.nav {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
}

.nav-btn {
  padding: 12px 24px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  font-size: 14px;
}

.nav-btn:hover {
  background: var(--bg-hover);
  color: var(--text);
}

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

/* Content */
.content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}

.view h2 {
  margin-bottom: 24px;
  font-size: 28px;
}

/* Contests Grid */
.contests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.contest-card {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all 0.2s;
  cursor: pointer;
}

.contest-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.contest-card h3 {
  margin-bottom: 8px;
  font-size: 20px;
}

.contest-card p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 16px;
}

.contest-badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg-hover);
  border-radius: 16px;
  font-size: 12px;
  margin-right: 8px;
}

.contest-badge.active {
  background: var(--success);
  color: white;
}

.contest-stats {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 14px;
}

.contest-stat {
  display: flex;
  flex-direction: column;
}

.contest-stat span:first-child {
  color: var(--text-muted);
  font-size: 12px;
}

.contest-stat span:last-child {
  color: var(--text);
  font-weight: 600;
}

/* Radio Cards */
.radio-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.radio-card {
  position: relative;
  cursor: pointer;
}

.radio-card input {
  position: absolute;
  opacity: 0;
}

.radio-card > div {
  padding: 20px;
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: 12px;
  transition: all 0.2s;
}

.radio-card input:checked + div {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.1);
}

.radio-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 16px;
}

.radio-card p {
  color: var(--text-muted);
  font-size: 13px;
}

/* Checkbox */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  cursor: pointer;
}

.checkbox-label input {
  width: auto;
}

/* Info Box */
.info-box {
  padding: 16px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid var(--primary);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
}

/* Rule Params */
.rule-params {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 14px;
}

.rule-params input {
  width: 80px;
  padding: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  text-align: center;
}

/* Rule Edit Item (for modal) */
.rule-edit-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

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

.rule-edit-item .checkbox-label {
  margin-bottom: 8px;
}

.rule-edit-item .rule-params {
  margin-bottom: 0;
  margin-left: 24px;
}


/* Contest Selector */
.contest-selector {
  margin-bottom: 24px;
}

.contest-selector label {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
  font-size: 14px;
}

.contest-selector select {
  width: 100%;
  max-width: 400px;
  padding: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
}

/* Result Box */
.result-box {
  margin-top: 24px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.result-box.success {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.1);
}

.result-box.error {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.1);
}

/* Stats Box */
.stats-box {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-item {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: center;
}

.stat-item .value {
  display: block;
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.stat-item .label {
  display: block;
  color: var(--text-muted);
  font-size: 14px;
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  width: 90%;
  max-width: 500px;
}

.modal-content h3 {
  margin-bottom: 24px;
  font-size: 24px;
}

.modal-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.modal-actions button {
  flex: 1;
}

/* Rounds List */
.rounds-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.round-card {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.round-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.round-badge {
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
}

.round-badge.pending {
  background: var(--warning);
  color: white;
}

.round-badge.active {
  background: var(--success);
  color: white;
}

.round-badge.completed {
  background: var(--bg-hover);
  color: var(--text);
}

.round-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

/* Numbers View */
.numbers-search {
  margin-bottom: 20px;
}

.search-input {
  width: 100%;
  max-width: 400px;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.2s;
}

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

.search-input::placeholder {
  color: var(--text-muted);
}

.numbers-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.participant-numbers-card {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.participant-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.participant-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
}

.participant-info {
  display: flex;
  flex-direction: column;
}

.participant-username {
  font-weight: 600;
  font-size: 16px;
  color: var(--text);
}

.participant-count {
  font-size: 13px;
  color: var(--text-muted);
}

.participant-numbers {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.number-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  padding: 6px 12px;
  background: var(--primary);
  color: white;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: default;
}

.number-badge:hover {
  background: var(--primary-dark);
}

/* Responsive */
@media (max-width: 768px) {
  .radio-group {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .contests-grid {
    grid-template-columns: 1fr;
  }

  .header-content {
    flex-direction: column;
    gap: 16px;
  }

  .participant-numbers {
    justify-content: center;
  }
}

/* Tooltips */
.tooltip-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin-left: 6px;
  background: var(--bg-hover);
  border-radius: 50%;
  font-size: 12px;
  color: var(--text-muted);
  cursor: help;
  vertical-align: middle;
  transition: all 0.2s;
}

.tooltip-icon:hover {
  background: var(--primary);
  color: white;
}

.form-group label {
  display: flex;
  align-items: center;
}

/* Activate Button */
.btn-activate {
  background: var(--success);
  color: white;
  padding: 8px 16px;
  font-size: 13px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

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

.btn-activate.active {
  background: var(--danger);
  animation: pulse-active 2s infinite;
}

@keyframes pulse-active {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(239, 68, 68, 0); }
}

#login-screen { display: none !important; }