html, body {
  margin: 0; padding: 0; height: 100%;
  background: linear-gradient(135deg, #fce8ef 0%, #e8f0e4 50%, #f8e4ec 100%);
  background-attachment: fixed;
  font-family: 'DM Sans', sans-serif;
}
body {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 24px; box-sizing: border-box;
}

.rn-app {
  --pink-deep: #d4537e;
  --sage: #5a7a52; --sage-light: #8aab80; --sage-dark: #3b5534;
  --glass-bg: rgba(255,255,255,0.55); --glass-border: rgba(255,255,255,0.75);
  --text-mid: #5a6a58; --text-soft: #8a9a88;
  --numeral-font: 'Cinzel', serif;

  width: 100%; max-width: 520px;
  background: rgba(255,255,255,0.35);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,0.70); border-radius: 28px;
  box-shadow: 0 8px 48px rgba(90,122,82,0.13), 0 2px 8px rgba(212,83,126,0.07);
  padding: 64px 28px 36px;
  box-sizing: border-box;
  position: relative; overflow: hidden;
}
.rn-app::before {
  content: ''; position: absolute; top: -60px; right: -60px;
  width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(244,184,204,0.35) 0%, transparent 70%);
  pointer-events: none; z-index: 0;
}
.rn-app::after {
  content: ''; position: absolute; bottom: -40px; left: -40px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(138,171,128,0.25) 0%, transparent 70%);
  pointer-events: none; z-index: 0;
}

.month-roman,
.month-header-roman,
.day-roman-small,
.day-roman-full {
  font-family: var(--numeral-font);
}

.global-header {
  position: absolute;
  top: 24px; right: 24px;
  z-index: 100;
}

.font-picker-wrap { position: relative; flex-shrink: 0; }
.font-picker-btn {
  background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: 20px;
  padding: 5px 12px 5px 10px; font-family: inherit; font-size: 0.78rem; font-weight: 500;
  color: var(--text-mid); cursor: pointer; display: flex; align-items: center; gap: 5px;
  transition: background 0.18s; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  white-space: nowrap;
}
.font-picker-btn:hover { background: rgba(255,255,255,0.82); }
.font-picker-btn svg { flex-shrink: 0; }

.font-dropdown {
  position: absolute; right: 0; top: calc(100% + 6px);
  background: rgba(255,255,255,0.92); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border); border-radius: 14px;
  padding: 6px; min-width: 210px;
  box-shadow: 0 8px 32px rgba(90,122,82,0.15);
  z-index: 100;
  opacity: 0; transform: translateY(-6px) scale(0.97);
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.font-dropdown.open { opacity: 1; transform: none; pointer-events: all; }

.font-option {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px; border-radius: 9px; cursor: pointer;
  transition: background 0.14s;
  border: none; background: none; width: 100%; text-align: left;
}
.font-option:hover { background: rgba(90,122,82,0.08); }
.font-option.active { background: rgba(90,122,82,0.12); }
.font-option-name { font-size: 0.82rem; color: var(--text-mid); font-weight: 500; }
.font-option-preview { font-size: 1.05rem; color: var(--sage); letter-spacing: 0.03em; }
.font-section-label {
  font-size: 0.65rem; font-weight: 500; color: var(--text-soft);
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 6px 12px 2px;
}

.rn-screen { display: none; position: relative; z-index: 1; }
.rn-screen.active { display: block; }

.year-bar { display: flex; align-items: center; justify-content: center; gap: 18px; margin-bottom: 22px; }
.nav-btn {
  background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: 50%;
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--sage-dark); font-size: 18px; font-family: inherit;
  transition: background 0.18s, transform 0.12s;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); flex-shrink: 0;
}
.nav-btn:hover { background: rgba(255,255,255,0.82); transform: scale(1.08); }
.nav-btn:disabled { opacity: 0.3; cursor: default; transform: none; }
.year-display { font-size: 2rem; font-weight: 500; color: var(--sage-dark); letter-spacing: 0.04em; min-width: 80px; text-align: center; }

.today-btn {
  display: block; margin: 0 auto 20px;
  background: var(--glass-bg); border: 1px solid var(--sage-light); border-radius: 20px;
  padding: 6px 18px; font-family: inherit; font-size: 0.82rem; font-weight: 500;
  color: var(--sage-dark); cursor: pointer; letter-spacing: 0.04em; transition: background 0.18s;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.today-btn:hover { background: rgba(255,255,255,0.82); }

.month-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.month-btn {
  background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: 12px;
  padding: 14px 6px 12px; cursor: pointer; text-align: center;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  transition: background 0.18s, transform 0.13s, border-color 0.18s;
}
.month-btn:hover { background: rgba(255,255,255,0.82); border-color: var(--sage-light); transform: translateY(-2px); }
.month-name { font-size: 0.82rem; font-weight: 500; color: var(--text-mid); letter-spacing: 0.06em; text-transform: uppercase; display: block; }
.month-roman { font-size: 1.2rem; font-weight: 600; color: var(--sage); margin-top: 4px; display: block; }

.back-btn {
  background: none; border: none; cursor: pointer; font-family: inherit;
  font-size: 0.84rem; font-weight: 500; color: var(--text-mid);
  padding: 0 0 18px; display: flex; align-items: center; gap: 6px;
  letter-spacing: 0.03em; transition: color 0.15s;
}
.back-btn:hover { color: var(--sage-dark); }

.month-header-wrapper { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.month-header { text-align: center; flex-grow: 1; }
.month-header-name { font-size: 1.5rem; font-weight: 500; color: var(--sage-dark); }
.month-header-roman { font-size: 0.95rem; color: var(--sage); letter-spacing: 0.08em; margin-top: 2px; }
.month-year-sub { font-size: 0.8rem; color: var(--text-soft); margin-top: 2px; }

.days-grid {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; margin-bottom: 8px;
}
.day-label {
  text-align: center; font-size: 0.68rem; font-weight: 500; color: var(--text-soft);
  letter-spacing: 0.06em; text-transform: uppercase; padding-bottom: 6px;
}
.day-cell {
  background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: 8px;
  padding: 6px 2px 5px; text-align: center; cursor: pointer;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: background 0.15s, transform 0.12s, border-color 0.15s;
  min-height: 44px; display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.day-cell:focus-visible {
  outline: 2px solid var(--pink-deep); outline-offset: 2px;
}
.day-cell[inert] {
  background: transparent; border-color: transparent; cursor: default;
  visibility: hidden;
}
.day-cell:not([inert]):hover {
  background: rgba(255,255,255,0.85); border-color: var(--sage-light); transform: translateY(-1px);
}
.day-cell.today-cell { border-color: var(--pink-deep); background: rgba(244,184,204,0.22); }
.day-num { font-size: 0.72rem; color: var(--text-soft); }
.day-roman-small { font-size: clamp(0.45rem, 1.1vw, 0.7rem); color: var(--text-mid); font-weight: 600; margin-top: 1px; }

.day-view-inner { text-align: center; padding-top: 8px; }
.day-view-label { font-size: 0.8rem; color: var(--text-soft); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 6px; }
.day-nav-wrapper { display: flex; align-items: center; justify-content: center; gap: 12px; margin: 10px 0 18px; }
.day-glass-card {
  background: rgba(255,255,255,0.52); border: 1px solid rgba(255,255,255,0.80); border-radius: 18px;
  padding: 28px 20px 24px; backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 6px 32px rgba(90,122,82,0.10); flex-grow: 1; max-width: 380px;
}
.day-roman-full { font-size: clamp(1.4rem, 5vw, 2.5rem); font-weight: 700; color: var(--pink-deep); line-height: 1.25; word-break: break-word; letter-spacing: 0.04em; }
.day-view-sub { font-size: 0.88rem; color: var(--text-mid); margin-top: 10px; }

.copy-btn {
  background: var(--sage); color: #fff; border: none; border-radius: 24px;
  padding: 10px 28px; font-family: inherit; font-size: 0.88rem; font-weight: 500;
  cursor: pointer; letter-spacing: 0.04em; transition: background 0.18s, transform 0.12s; margin-bottom: 6px;
}
.copy-btn:hover { background: var(--sage-dark); transform: scale(1.03); }
.copy-confirm { font-size: 0.78rem; color: var(--sage); font-weight: 500; min-height: 1.2em; margin-top: 4px; }

.kb-hint { margin-top: 20px; text-align: center; font-size: 0.72rem; color: var(--text-soft); letter-spacing: 0.04em; }
.kb-hint kbd {
  display: inline-block; background: var(--glass-bg); border: 1px solid var(--glass-border);
  border-radius: 4px; padding: 1px 5px; font-family: inherit; font-size: 0.72rem; color: var(--text-mid);
}

.signature {
  position: fixed; bottom: 20px; right: 24px; font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem; font-weight: 500; color: #d4537e; opacity: 0.85; pointer-events: none; z-index: 10;
}

@media (max-width: 420px) {
  .global-header { top: 16px; right: 16px; }
  .rn-app { padding: 56px 16px 24px; }
  .month-grid { grid-template-columns: repeat(2, 1fr); }
  body { padding: 16px; align-items: flex-start; padding-top: 32px; }
  .signature { bottom: 16px; right: 16px; font-size: 0.85rem; }
  .kb-hint { display: none; }
}