/* =========================================================================
   Grâce - Main Stylesheet
   ========================================================================= */

:root {
  /* === Colors === */
  --bg-main: #FAF9F6;
  --bg-sub: #F5F0EB;
  --gold: #C5A55A;
  --gold-hover: #B08F3E;
  --gold-light: rgba(197, 165, 90, 0.1);
  --pink: #D7727C;
  --green: #8BAA7E;
  --blue: #7BA7C9;
  --text-main: #333333;
  --text-sub: #777777;
  --white: #FFFFFF;
  --border: #E5E0DA;
  --line-green: #06C755;

  /* === Fonts === */
  --font-logo: 'Cormorant Garamond', serif;
  --font-heading-jp: 'Noto Serif JP', serif;
  --font-body: 'Noto Sans JP', sans-serif;

  /* === Sizes === */
  --section-padding: clamp(80px, 10vw, 160px);
  --container-width: min(1200px, 90vw);
  --header-height: 80px;
  --header-height-mobile: 64px;

  /* === Shadows === */
  --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.10);

  /* === Radius === */
  --radius-card: 8px;
  --radius-btn: 4px;

  /* === Transitions === */
  --transition-base: 0.3s ease;
  --transition-slow: 0.6s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.8;
  letter-spacing: 0.05em;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-base);
}

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

ul {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* =========================================================================
   Typography
   ========================================================================= */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading-jp);
  font-weight: 500;
  line-height: 1.4;
}

.text-gold { color: var(--gold); }
.text-sub { color: var(--text-sub); }
.text-center { text-align: center; }

/* =========================================================================
   Utilities
   ========================================================================= */
.container {
  width: var(--container-width);
  margin-inline: auto;
}

.section {
  padding-block: var(--section-padding);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header__en {
  display: block;
  font-family: var(--font-logo);
  color: var(--gold);
  font-size: 14px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-header__ja {
  font-size: clamp(24px, 4vw, 32px);
  margin-bottom: 24px;
}

.section-header__line {
  width: 40px;
  height: 1px;
  background-color: var(--gold);
  margin-inline: auto;
}

/* Scroll Animation */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays */
.fade-in-up:nth-child(1) { transition-delay: 0.1s; }
.fade-in-up:nth-child(2) { transition-delay: 0.2s; }
.fade-in-up:nth-child(3) { transition-delay: 0.3s; }
.fade-in-up:nth-child(4) { transition-delay: 0.4s; }

/* Placeholder Image Base */
.placeholder-img {
  background: linear-gradient(135deg, var(--bg-sub) 0%, #e8ddd0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  font-family: var(--font-body);
  font-size: 14px;
  border-radius: var(--radius-card);
  position: relative;
  overflow: hidden;
}

.placeholder-img::after {
  content: attr(data-label);
  position: absolute;
  padding: 4px 12px;
  background: rgba(255,255,255,0.7);
  border-radius: 4px;
  font-size: 12px;
  pointer-events: none;
}