:root {
  --bg: var(--tg-theme-bg-color, #1a1d23);
  --text: var(--tg-theme-text-color, #e8eaed);
  --hint: var(--tg-theme-hint-color, #8b919a);
  --link: var(--tg-theme-link-color, #6ab7ff);
  --btn: var(--tg-theme-button-color, #3390ec);
  --btn-t: var(--tg-theme-button-text-color, #fff);
  --sec: var(--tg-theme-secondary-bg-color, #242830);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  padding-bottom: env(safe-area-inset-bottom, 12px);
}

.hdr {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  padding-top: max(12px, env(safe-area-inset-top));
  border-bottom: 1px solid rgba(255,255,255,.08);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}
.hdr__back {
  background: var(--sec);
  border: none;
  color: var(--text);
  width: 40px;
  height: 40px;
  border-radius: 10px;
  font-size: 18px;
}
.hdr__title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.main {
  padding: 14px;
  max-width: 560px;
  margin: 0 auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 12px 16px;
  margin: 6px 0;
  border: none;
  border-radius: 12px;
  background: var(--btn);
  color: var(--btn-t);
  font-weight: 600;
  font-size: 15px;
}
.btn--sec {
  background: var(--sec);
  color: var(--text);
}
.btn--danger {
  background: #c44;
  color: #fff;
}
.btn-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.btn-row .btn { margin: 0; }

.card {
  background: var(--sec);
  border-radius: 14px;
  padding: 12px 14px;
  margin: 10px 0;
}
.card h3 { margin: 0 0 6px; font-size: 1rem; }
.card .meta {
  font-size: 13px;
  color: var(--hint);
  line-height: 1.4;
}

.input {
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.12);
  background: var(--sec);
  color: var(--text);
  font-size: 16px;
  margin: 8px 0;
}
label { display: block; font-size: 13px; color: var(--hint); margin-top: 10px; }

.err {
  color: #f66;
  font-size: 14px;
  margin: 8px 0;
}

.tabnav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  gap: 4px;
  padding: 8px;
  padding-bottom: max(8px, env(safe-area-inset-bottom));
  background: var(--bg);
  border-top: 1px solid rgba(255,255,255,.08);
}
.tabnav button {
  flex: 1;
  padding: 10px 4px;
  border: none;
  border-radius: 10px;
  background: var(--sec);
  color: var(--text);
  font-size: 12px;
}

.loading { text-align: center; color: var(--hint); padding: 24px; }