:root {
  --bg: var(--tg-theme-bg-color, #0f1115);
  --fg: var(--tg-theme-text-color, #f3f4f6);
  --muted: var(--tg-theme-hint-color, #9ca3af);
  --accent: var(--tg-theme-button-color, #7c5cff);
  --accent-fg: var(--tg-theme-button-text-color, #ffffff);
  --card: var(--tg-theme-secondary-bg-color, #1a1d24);
  --border: rgba(255, 255, 255, 0.08);
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Inter', system-ui, sans-serif;
  min-height: 100vh;
  min-height: 100dvh;
  overscroll-behavior-y: none;
}

#root {
  min-height: 100dvh;
  /* Telegram fullscreen: top chrome (close + bot pill) overlays content.
     --tg-content-safe-area-inset-top is set by Telegram WebApp; falls back to env(). */
  padding-top: max(
    var(--tg-content-safe-area-inset-top, 0px),
    calc(env(safe-area-inset-top, 0px) + 56px),
    100px
  );
  padding-right: calc(var(--tg-safe-area-inset-right, env(safe-area-inset-right, 0px)) + 20px);
  padding-bottom: calc(var(--tg-safe-area-inset-bottom, env(safe-area-inset-bottom, 0px)) + 110px);
  padding-left: calc(var(--tg-safe-area-inset-left, env(safe-area-inset-left, 0px)) + 20px);
  max-width: 720px;
  margin: 0 auto;
}

.loader {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60dvh;
  color: var(--muted);
}

.header {
  margin-bottom: 24px;
}
.header h1 {
  font-size: 28px;
  line-height: 1.15;
  margin: 0 0 6px;
  font-weight: 700;
}
.header .sub {
  color: var(--muted);
  font-size: 14px;
}

.progress {
  height: 6px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 24px;
}
.progress .bar {
  height: 100%;
  background: var(--accent);
  transition: width 0.25s ease;
  border-radius: 99px;
}

.question {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  margin-bottom: 16px;
}
.question .q-num {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}
.question .q-text {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
}

.options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.option {
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  font-size: 15px;
  text-align: left;
  cursor: pointer;
  transition: transform 0.05s ease, border-color 0.15s, background 0.15s;
}
.option:active { transform: scale(0.99); }
.option.selected {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
}

.nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px
    calc(var(--tg-safe-area-inset-right, env(safe-area-inset-right, 0px)) + 20px)
    calc(var(--tg-safe-area-inset-bottom, env(safe-area-inset-bottom, 0px)) + 12px)
    calc(var(--tg-safe-area-inset-left, env(safe-area-inset-left, 0px)) + 20px);
  background: linear-gradient(180deg, transparent, var(--bg) 30%);
  display: flex;
  gap: 10px;
}
.btn {
  flex: 1;
  padding: 14px 18px;
  border-radius: 14px;
  border: none;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
}
.btn.primary {
  background: var(--accent);
  color: var(--accent-fg);
}
.btn.secondary {
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--border);
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.result {
  text-align: center;
  padding: 40px 16px;
}
.result .emoji { font-size: 64px; margin-bottom: 12px; }
.result h2 { font-size: 24px; margin: 0 0 8px; }
.result p { color: var(--muted); margin: 0 0 24px; }

.error {
  text-align: center;
  padding: 40px 20px;
  color: var(--muted);
}
.error h2 { color: var(--fg); margin: 0 0 12px; }