:root {
  color-scheme: light dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

body {
  margin: 0;
  padding: 0;
  background: var(--tg-theme-secondary-bg-color, #f7f8fa);
  color: var(--tg-theme-text-color, #1b1f24);
}

.app {
  max-width: 480px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.app__header {
  margin-bottom: 24px;
}

.app__header h1 {
  margin: 0 0 8px;
  font-size: 1.75rem;
}

.app__description {
  margin: 0;
  font-size: 0.95rem;
  color: var(--tg-theme-hint-color, #6b7280);
}

.status {
  margin-bottom: 16px;
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--tg-theme-tertiary-bg-color, #e5e7eb);
  color: var(--tg-theme-text-color, #1b1f24);
  min-height: 24px;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.status.status--error {
  background: rgba(220, 38, 38, 0.12);
  color: #b91c1c;
}

.status.status--success {
  background: rgba(34, 197, 94, 0.12);
  color: #047857;
}

.status.status--loading {
  background: rgba(59, 130, 246, 0.12);
  color: #1d4ed8;
}

@media (prefers-color-scheme: dark) {
  .status {
    background: rgba(51, 65, 85, 0.45);
    color: rgba(226, 232, 240, 0.95);
    border: 1px solid rgba(148, 163, 184, 0.28);
  }

  .status.status--error {
    background: rgba(127, 29, 29, 0.45);
    color: #fecaca;
    border-color: rgba(248, 113, 113, 0.4);
  }

  .status.status--success {
    background: rgba(22, 101, 52, 0.45);
    color: #bbf7d0;
    border-color: rgba(74, 222, 128, 0.35);
  }

  .status.status--loading {
    background: rgba(30, 64, 175, 0.45);
    color: #bfdbfe;
    border-color: rgba(96, 165, 250, 0.4);
  }
}

.spinner {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.spinner__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  animation: spinner-bounce 1.4s infinite ease-in-out both;
}

.spinner__dot:nth-child(2) {
  animation-delay: -0.16s;
}

.spinner__dot:nth-child(3) {
  animation-delay: -0.32s;
}

@keyframes spinner-bounce {
  0%, 80%, 100% {
    transform: scale(0);
    opacity: 0.4;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

.card {
  background: var(--tg-theme-bg-color, #ffffff);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
  margin-bottom: 16px;
}

.card.hidden {
  display: none;
}

.card--locked {
  text-align: center;
  color: var(--tg-theme-hint-color, #6b7280);
}

.card--locked .card__help {
  margin: 0;
}

.steps--locked {
  pointer-events: none;
  opacity: 0.6;
}

.card h2 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 1.25rem;
}

.card__help {
  margin: 0 0 16px;
  font-size: 0.95rem;
  color: var(--tg-theme-hint-color, #6b7280);
}

.form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form__label {
  font-weight: 600;
}

.form__input {
  border: 1px solid var(--tg-theme-hint-color, #d1d5db);
  border-radius: 12px;
  padding: 12px;
  font-size: 1rem;
  background: var(--tg-theme-secondary-bg-color, #f9fafb);
  color: inherit;
}

.form__input:focus {
  outline: 2px solid var(--tg-theme-accent-color, #2563eb);
  outline-offset: 2px;
}

.button {
  border: none;
  border-radius: 999px;
  padding: 12px 20px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--tg-theme-button-color, #2563eb);
  color: var(--tg-theme-button-text-color, #ffffff);
  transition: opacity 0.2s ease;
}

.button.button--ghost {
  background: transparent;
  color: var(--tg-theme-link-color, #2563eb);
  border: 1px solid rgba(37, 99, 235, 0.35);
  padding: 10px 18px;
}

.button.button--ghost:hover:not([disabled]) {
  background: rgba(37, 99, 235, 0.08);
}

.button.button--ghost[disabled] {
  opacity: 0.5;
}

.button[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

.form__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}

#phone-summary {
  display: block;
  margin-top: 4px;
  font-weight: 600;
  color: var(--tg-theme-text-color, #1f2937);
}

.card__summary {
  display: block;
  margin-top: 4px;
  font-weight: 600;
  color: var(--tg-theme-text-color, #1f2937);
}