:root {
  --tg-viewport-height: 100vh;
  --bg: var(--tg-theme-bg-color, #ffffff);
  --secondary-bg: var(--tg-theme-secondary-bg-color, #f0f0f0);
  --text: var(--tg-theme-text-color, #222222);
  --hint: var(--tg-theme-hint-color, #999999);
  --link: var(--tg-theme-link-color, #2481cc);
  --button: var(--tg-theme-button-color, #2481cc);
  --button-text: var(--tg-theme-button-text-color, #ffffff);
  --destructive: #e53935;
  --success: #34c759;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: var(--tg-viewport-height);
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 480px;
  margin: 0 auto;
  padding: 24px 20px calc(100px + env(safe-area-inset-bottom));
}

/* Progress dots */
.progress {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 28px;
}
.progress .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--secondary-bg);
  transition: background .2s, transform .2s;
}
.progress .dot.active {
  background: var(--button);
  transform: scale(1.3);
}
.progress .dot.done {
  background: var(--link);
}

/* Steps */
.step {
  display: none;
  animation: fade-in .25s ease;
}
.step.active { display: block; }

@keyframes fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.step h1 {
  font-size: 22px;
  margin: 0 0 8px;
}

.hint {
  color: var(--hint);
  font-size: 14px;
  line-height: 1.5;
  margin: 0 0 20px;
}
.hint a { color: var(--link); }

.field {
  margin-bottom: 16px;
}
.field.hidden { display: none; }

.field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--hint);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.field input,
.field textarea {
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--secondary-bg);
  background: var(--secondary-bg);
  color: var(--text);
  font-size: 16px;
  outline: none;
  transition: border-color .15s;
  font-family: inherit;
  resize: vertical;
}
.field input:focus,
.field textarea:focus {
  border-color: var(--button);
}

.error {
  color: var(--destructive);
  font-size: 13px;
  min-height: 18px;
  margin: -8px 0 12px;
}

/* Segmented control */
.segmented {
  display: flex;
  background: var(--secondary-bg);
  border-radius: 12px;
  padding: 4px;
  margin-bottom: 20px;
}
.segment {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--hint);
  font-size: 14px;
  font-weight: 600;
  padding: 10px;
  border-radius: 9px;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.segment.active {
  background: var(--bg);
  color: var(--text);
}

.text-btn {
  display: block;
  margin: 4px 0 0;
  border: none;
  background: none;
  color: var(--link);
  font-size: 14px;
  cursor: pointer;
  padding: 8px 0;
}

/* Success */
.success-badge {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--success);
  color: #fff;
  font-size: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 24px auto 20px;
}
[data-step="success"] h1,
[data-step="success"] .hint {
  text-align: center;
}

/* Toast banner */
.banner {
  position: fixed;
  left: 50%;
  bottom: calc(24px + env(safe-area-inset-bottom));
  transform: translate(-50%, 16px);
  background: var(--secondary-bg);
  color: var(--text);
  padding: 12px 18px;
  border-radius: 12px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  max-width: calc(100% - 40px);
  text-align: center;
  box-shadow: 0 4px 16px rgba(0,0,0,.12);
  z-index: 10;
}
.banner.show {
  opacity: 1;
  transform: translate(-50%, 0);
}
.banner.error { color: var(--destructive); }
.banner.success { color: var(--success); }