/* ============================================
   Humming Bagel — Design Tokens & Base
   ============================================ */

:root {
  /* Palette */
  --cream: #FAF4E6;
  --cream-deep: #F2E8D0;
  --cream-warm: #F5EDD8;
  --bagel: #D99845;
  --bagel-deep: #C48433;
  --bagel-light: #E9B572;
  --brown: #6B4423;
  --brown-deep: #4A3220;
  --brown-ink: #3A2818;
  --muted: #8B7356;
  --accent-green: #7A8A5C;
  --accent-red: #B84A3E;
  --line: rgba(107, 68, 35, 0.18);
  --line-soft: rgba(107, 68, 35, 0.10);

  /* Typography */
  --font-jp-serif: "Zen Old Mincho", "Noto Serif JP", serif;
  --font-jp-sans: "Zen Kaku Gothic New", "Noto Sans JP", sans-serif;
  --font-script: "Caveat", "Kaushan Script", cursive;
  --font-display: "Fraunces", "Zen Old Mincho", serif;

  /* Spacing */
  --max-w: 1200px;
  --max-w-narrow: 880px;
  --pad-x: clamp(20px, 4vw, 48px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--cream);
  color: var(--brown-ink);
  font-family: var(--font-jp-sans);
  font-weight: 400;
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
  overflow-x: hidden;
}

/* Paper-like grain background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.35;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.42  0 0 0 0 0.27  0 0 0 0 0.14  0 0 0 0.18 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
}

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

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

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* ============================================
   Typography classes
   ============================================ */

.jp-serif { font-family: var(--font-jp-serif); font-weight: 500; }
.jp-sans { font-family: var(--font-jp-sans); }
.script { font-family: var(--font-script); font-weight: 500; }
.display { font-family: var(--font-display); font-weight: 400; letter-spacing: 0.01em; }

.eyebrow {
  font-family: var(--font-script);
  font-size: 22px;
  color: var(--bagel-deep);
  letter-spacing: 0.02em;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--bagel-deep);
}

.section-title {
  font-family: var(--font-jp-serif);
  font-weight: 500;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.4;
  letter-spacing: 0.08em;
  color: var(--brown-deep);
}

.section-title .en {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: 0.42em;
  letter-spacing: 0.16em;
  color: var(--bagel-deep);
  text-transform: uppercase;
  margin-top: 14px;
  opacity: 0.85;
}

.lede {
  font-family: var(--font-jp-serif);
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 2.1;
  letter-spacing: 0.08em;
  color: var(--brown-ink);
  font-weight: 500;
}

/* ============================================
   Layout helpers
   ============================================ */

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--pad-x); }
.container-narrow { max-width: var(--max-w-narrow); margin: 0 auto; padding: 0 var(--pad-x); }

section { position: relative; z-index: 2; }

.section-pad { padding: clamp(70px, 10vw, 140px) 0; }

/* ============================================
   Fade-in on scroll
   ============================================ */

.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1.2s cubic-bezier(.2,.6,.2,1), transform 1.2s cubic-bezier(.2,.6,.2,1);
}
.fade-up.in {
  opacity: 1;
  transform: none;
}
.fade-up.d1 { transition-delay: .1s; }
.fade-up.d2 { transition-delay: .2s; }
.fade-up.d3 { transition-delay: .3s; }
.fade-up.d4 { transition-delay: .4s; }

/* ============================================
   Buttons & links
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  font-family: var(--font-jp-sans);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.12em;
  transition: all .3s ease;
  background: var(--brown-deep);
  color: var(--cream);
}
.btn:hover { background: var(--brown-ink); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: var(--brown-deep);
  border: 1px solid var(--brown-deep);
}
.btn-outline:hover { background: var(--brown-deep); color: var(--cream); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--brown-deep);
  font-weight: 500;
  position: relative;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
  transition: all .3s ease;
}
.link-arrow:hover { color: var(--bagel-deep); border-color: var(--bagel-deep); gap: 14px; }

/* ============================================
   Divider — hand-drawn wave
   ============================================ */

.divider-wave {
  display: block;
  width: 120px;
  height: 14px;
  margin: 0 auto;
  opacity: 0.6;
}