* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--tg-theme-bg-color, #1a1a2e);
  color: var(--tg-theme-text-color, #eaeaea);
}
#app {
  max-width: 480px;
  margin: 0 auto;
  padding: 12px;
  min-height: 100vh;
}
.screen { display: none; }
.screen.visible { display: block; }
.hidden { display: none !important; }
#loading {
  text-align: center;
  padding: 40px;
  color: var(--tg-theme-text-color, #eaeaea);
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  margin-bottom: 12px;
  gap: 12px;
}
.header-left { font-size: 0.9em; }
.header-link {
  color: var(--tg-theme-link-color, #2481cc);
  text-decoration: none;
}
.header-link:active { opacity: 0.8; }
#balance-wrap, .balance-wrap { font-size: 0.95em; flex-shrink: 0; display: inline-flex; align-items: center; gap: 4px; }
.balance-value { font-weight: bold; font-size: 1.1em; }
.balance-plus-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  margin: 0;
  border: none;
  border-radius: 50%;
  background: var(--tg-theme-button-color, #2481cc);
  color: var(--tg-theme-button-text-color, #fff);
  font-size: 1.1em;
  font-weight: bold;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
}
.balance-plus-btn:active { opacity: 0.85; }
header.sub-header { margin-bottom: 8px; }
.page-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 12px 0;
  color: var(--tg-theme-text-color, #eaeaea);
  text-align: center;
}
.welcome { text-align: center; margin: 12px 0; }
.subscribe-message { margin-bottom: 16px; line-height: 1.5; text-align: center; }
.subscribe-message p { margin: 8px 0; }
.subscribe-channel-link {
  color: #f0c020;
  text-decoration: underline;
}
.subscribe-channel-link:active { opacity: 0.85; }
.subscribe-buttons { text-align: center; margin-top: 16px; }
.subscribe-buttons .btn { text-align: center; display: block; }
.subscribe-buttons .subscribe-btn { margin-bottom: 10px; }
.menu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.menu-grid .btn { padding: 12px 8px; font-size: 0.9em; text-align: center; }
.btn {
  display: inline-block;
  padding: 12px 16px;
  background: var(--tg-theme-button-color, #2481cc);
  color: var(--tg-theme-button-text-color, #fff);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  font-size: 1em;
  width: 100%;
}
.btn.secondary { background: var(--tg-theme-secondary-bg-color, #3d3d5c); color: var(--tg-theme-text-color, #eaeaea); }
.btn.btn-loading {
  background: transparent;
  color: #888;
  cursor: default;
  border: none;
}
.back-btn { margin-bottom: 12px; padding: 8px 12px; font-size: 0.95em; }
.service-description {
  font-size: 0.9em;
  line-height: 1.4;
  margin-bottom: 12px;
  padding: 10px;
  background: var(--tg-theme-secondary-bg-color, #2d2d44);
  border-radius: 8px;
}
.service-price { margin-bottom: 12px; }
.result-box {
  margin-top: 16px;
  padding: 12px;
  background: var(--tg-theme-secondary-bg-color, #2d2d44);
  color: var(--tg-theme-text-color, #eaeaea);
  border-radius: 8px;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.95em;
}
.result-box a,
.result-box .result-link {
  color: var(--tg-theme-link-color, #6ab2f2);
  text-decoration: underline;
  cursor: pointer;
}
.result-dtp-scheme {
  margin: 8px 0;
  border-radius: 8px;
  overflow: hidden;
  background: rgba(0,0,0,0.2);
}
.result-dtp-scheme img {
  display: block;
  max-width: 100%;
  height: auto;
  vertical-align: top;
}
.send-to-chat-hint {
  margin: 0 0 8px 0;
  font-size: 0.9em;
  color: var(--tg-theme-hint-color, #999);
  line-height: 1.35;
}
#service-content input, #payment-content input {
  width: 100%;
  padding: 12px;
  margin: 8px 0;
  border-radius: 8px;
  border: 1px solid #ccc;
  font-size: 1em;
}
.payment-amounts {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 12px 0 0 0;
}
.payment-amount-btn {
  margin: 0;
  min-height: 44px;
}
.payment-confirm-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
}
.payment-confirm-overlay.hidden { display: none !important; }
.payment-confirm-box {
  background: var(--tg-theme-bg-color, #1a1a2e);
  color: var(--tg-theme-text-color, #eaeaea);
  padding: 20px;
  border-radius: 12px;
  max-width: 320px;
  width: 100%;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}
.payment-confirm-text {
  margin: 0 0 16px 0;
  font-size: 1.1em;
  text-align: center;
}
.payment-confirm-buttons {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.payment-confirm-buttons .btn { margin: 0; }
.profile-block { margin-top: 12px; margin-bottom: 4px; font-weight: 600; }
.check-history-block {
  margin-bottom: 16px;
  padding: 12px;
  background: var(--tg-theme-secondary-bg-color, #2d2d44);
  border-radius: 8px;
}
.check-history-date { margin: 0 0 4px 0; font-size: 0.9em; color: var(--tg-theme-hint-color, #999); }
.check-history-service { margin: 0 0 4px 0; font-weight: 600; }
.check-history-request { margin: 0 0 8px 0; font-size: 0.95em; }
.check-history-block .btn-show-result { margin: 0; }
.operations-history-item { border-left: 4px solid var(--tg-theme-hint-color, #666); }
.operations-history-item.op-add { border-left-color: #2ecc71; }
.operations-history-item.op-deduct { border-left-color: #e74c3c; }
.operations-history-item.op-set { border-left-color: #3498db; }
.operations-history-type { margin: 0 0 4px 0; font-size: 1em; }
.operations-history-service { margin: 0 0 2px 0; font-size: 0.9em; color: var(--tg-theme-hint-color, #999); }
.operations-history-request { margin: 0 0 4px 0; font-size: 0.9em; word-break: break-all; }
.operations-history-meta { margin: 0; font-size: 0.85em; color: var(--tg-theme-hint-color, #999); }
.admin-link { display: block; margin-top: 16px; text-align: center; color: var(--tg-theme-link-color); }
@media (max-width: 400px) {
  .menu-grid { grid-template-columns: 1fr; }
}