/**
 * 디자인 토큰 + reset + base typography.
 *
 * 색/간격/라운드는 변수로. 변경 시 한 곳만 수정.
 */

:root {
  /* 색 */
  --color-bg: #f5f5f5;
  --color-surface: #ffffff;
  --color-text: #1f2937;
  --color-text-sub: #6b7280;
  --color-text-muted: #9ca3af;
  --color-border: #e5e7eb;
  --color-border-strong: #d1d5db;

  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-soft: #dbeafe;

  --color-success: #16a34a;
  --color-warn: #d97706;
  --color-danger: #dc2626;
  --color-danger-hover: #b91c1c;

  --color-sun: #dc2626;
  --color-sat: #2563eb;
  --color-holiday-bg: #fef2f2;
  --color-other-month: #d1d5db;

  /* 환경 뱃지 */
  --color-env-dev-bg: #fff3e0;
  --color-env-dev-text: #e65100;
  --color-env-prod-bg: #ffebee;
  --color-env-prod-text: #c62828;

  /* 간격 */
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;

  /* 폰트 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Pretendard", "맑은 고딕", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "Menlo", "Consolas", monospace;
  --font-size-xs: 12px;
  --font-size-sm: 13px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;

  /* 라운드 */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;

  /* 그림자 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 2px 6px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.1);

  /* 트랜지션 */
  --transition-fast: 0.12s ease;
  --transition: 0.18s ease;
}

/* reset */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  cursor: pointer;
}
button:disabled { cursor: not-allowed; }

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  background: var(--color-border);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
}

.is-hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}