/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #FAFAF8;
  --fg: #1A1A1A;
  --muted: #8A8A8A;
  --accent: #1A1A1A;
  --card-shadow: 0 4px 24px rgba(0,0,0,0.12);
  --radius: 16px;
  --font: 'Noto Sans KR', -apple-system, sans-serif;
}

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  min-height: 100dvh;
  overflow-x: hidden;
}

img { display: block; width: 100%; height: 100%; object-fit: cover; }

button {
  font-family: var(--font);
  cursor: pointer;
  border: none;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

/* ── Progress Bar ── */
.progress-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: rgba(0,0,0,0.08);
  z-index: 100;
}
.progress-bar__fill {
  height: 100%;
  background: var(--fg);
  transition: width 0.4s ease;
}

/* ── Phase Header ── */
.phase-header {
  padding: 28px 24px 0;
  text-align: center;
}
.phase-header__label {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.phase-header__title {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
}

/* ── Button ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.15s, opacity 0.15s;
}
.btn:active { transform: scale(0.96); }
.btn--primary { background: var(--fg); color: #fff; }
.btn--primary:disabled { opacity: 0.35; pointer-events: none; }
.btn--secondary { background: rgba(0,0,0,0.06); color: var(--fg); }