/* =============================================
   common.css : 共通デザイントークン・リセット
   ============================================= */

:root {
  /* === Color Tokens === */
  --clr-bg:          #f8f9fa;
  --clr-bg-header:   rgba(255, 255, 255, 0.97);
  --clr-gold:        #1a4f9c;
  --clr-gold-light:  #2d6bc4;
  --clr-white:       #ffffff;
  --clr-text:        #1a1e2e;
  --clr-text-sub:    #6c7a99;
  --clr-border:      rgba(26, 79, 156, 0.18);
  --clr-border-dim:  rgba(26, 79, 156, 0.07);
  --clr-bg-alt:      #eef2f9;
  --clr-bg-card:     #ffffff;
  --clr-bg-card-img: #dce8f5;
  --clr-error:       #e53e3e;

  /* === Typography === */
  --font-en: 'Cormorant Garamond', serif;
  --font-ja: 'Noto Serif JP', serif;

  /* === Font Sizes === */
  --fz-2xs: 10px;
  --fz-xs:  12px;
  --fz-sm:  13px;
  --fz-base: 16px;
  --fz-md:  18px;
  --fz-lg:  24px;
  --fz-xl:  32px;

  /* === Spacing === */
  --sp-2xs:  4px;
  --sp-xs:   8px;
  --sp-sm:  16px;
  --sp-md:  24px;
  --sp-lg:  48px;
  --sp-xl:  80px;

  /* === Layout === */
  --inner-width:      1200px;
  --inner-padding:     40px;
  --inner-padding-sp:  20px;

  /* === Header === */
  --header-h:    88px;
  --header-h-sp: 64px;

  /* === Transition === */
  --t-base: 0.35s ease;
  --t-slow: 0.60s ease;

  /* === Z-index === */
  --z-header:  1000;
  --z-overlay:  999;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-ja);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

ul { list-style: none; }

a {
  text-decoration: none;
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* === Menu Open State === */
body.is-menu-open {
  overflow: hidden;
}

/* === Demo Placeholder === */
.demo-placeholder {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-text-sub);
  font-size: var(--fz-xs);
  letter-spacing: 0.12em;
  border-top: 1px solid var(--clr-border-dim);
}

.demo-placeholder--alt {
  background-color: #eef2f9;
}