/* Color palette demos – shared layout */

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

:root {
  --font-sans: "Noto Sans JP", sans-serif;
  --font-serif: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", serif;
  --radius-sm: 8px;
  --radius-pill: 30px;
  --shadow-card: 0 2px 12px rgba(61, 58, 54, 0.08);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--c-bg-main);
  color: var(--c-text);
  line-height: 1.7;
}

a {
  color: inherit;
}

.demo-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  background: rgba(247, 245, 242, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-greige);
}

.demo-nav__back {
  font-size: 13px;
  text-decoration: none;
  color: var(--c-text-sub);
  letter-spacing: 0.04em;
}

.demo-nav__back:hover {
  color: var(--c-text);
}

.demo-nav__title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.demo-nav__switch {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.demo-nav__switch a {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  text-decoration: none;
  border: 1px solid var(--c-greige);
  color: var(--c-text-sub);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.demo-nav__switch a:hover,
.demo-nav__switch a.is-active {
  background: var(--c-dark);
  border-color: var(--c-dark);
  color: #fff;
}

.demo-hero {
  padding: clamp(48px, 8vw, 88px) 24px clamp(40px, 6vw, 64px);
  text-align: center;
  background: linear-gradient(180deg, var(--c-bg-sub) 0%, var(--c-bg-main) 100%);
}

.demo-hero__label {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--c-bg-main);
  border: 1px solid var(--c-greige);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-text-sub);
}

.demo-hero__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.demo-hero__desc {
  max-width: 560px;
  margin: 0 auto;
  font-size: 14px;
  color: var(--c-text-sub);
  line-height: 1.9;
}

.demo-section {
  padding: clamp(40px, 6vw, 72px) 24px;
}

.demo-section__inner {
  max-width: 960px;
  margin: 0 auto;
}

.demo-section__heading {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-sub);
  margin-bottom: 20px;
}

/* Swatches */
.swatches {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}

.swatch {
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: #fff;
}

.swatch__color {
  height: 72px;
}

.swatch__info {
  padding: 12px;
  background: #fff;
}

.swatch__name {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 4px;
}

.swatch__hex {
  font-size: 11px;
  color: var(--c-text-sub);
  font-family: ui-monospace, monospace;
}

/* Typography */
.type-sample {
  padding: 32px;
  border-radius: var(--radius-sm);
  background: var(--c-bg-sub);
}

.menu-title {
  font-size: clamp(28px, 3.5vw, 38px);
  font-weight: 700;
  color: var(--c-text);
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.menu-subtitle {
  margin-top: 10px;
  font-size: 14px;
  color: var(--c-text-sub);
  letter-spacing: 0.08em;
}

.type-body {
  margin-top: 24px;
  font-size: 15px;
  line-height: 2;
  color: var(--c-text);
}

.type-note {
  margin-top: 16px;
  font-size: 12px;
  color: var(--c-text-sub);
}

/* Mock sections */
.mock-concept {
  padding: clamp(48px, 8vw, 80px) 24px;
  background: var(--c-bg-main);
  text-align: center;
}

.mock-concept__catch {
  margin-top: 24px;
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.mock-concept__body {
  max-width: 520px;
  margin: 24px auto 0;
  font-size: 14px;
  line-height: 2.1;
  color: var(--c-text-sub);
}

.mock-satisfaction {
  padding: clamp(48px, 8vw, 80px) 24px;
  background: var(--c-bg-sub);
  text-align: center;
}

.mock-satisfaction__score {
  margin: 20px 0 8px;
  font-family: var(--font-serif);
  font-size: clamp(56px, 8vw, 80px);
  font-weight: 700;
  line-height: 1;
}

.mock-satisfaction__cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  max-width: 720px;
  margin: 32px auto 0;
}

.mock-card {
  padding: 28px 24px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--c-greige);
  box-shadow: var(--shadow-card);
}

.mock-card__title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
  margin-bottom: 20px;
}

.mock-ring {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto 16px;
}

.mock-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.mock-ring__track {
  fill: none;
  stroke: var(--c-bg-sub);
  stroke-width: 3.8;
}

.mock-ring__value {
  fill: none;
  stroke: var(--c-accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 85, 100;
}

.mock-ring__num {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
}

.mock-ring__label {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  color: var(--c-text-sub);
  margin-top: 2px;
}

.mock-dark {
  padding: clamp(48px, 8vw, 72px) 24px;
  background: var(--c-dark);
  color: #fff;
  text-align: center;
}

.mock-dark .menu-title {
  color: #fff;
}

.mock-dark .menu-subtitle {
  color: rgba(255, 255, 255, 0.72);
}

.mock-dark__items {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 720px;
  margin: 32px auto 0;
  text-align: left;
}

.mock-dark__item {
  display: flex;
  gap: 12px;
  align-items: center;
}

.mock-dark__thumb {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}

.mock-dark__name {
  font-size: 13px;
  font-weight: 700;
}

.mock-dark__desc {
  font-size: 12px;
  opacity: 0.75;
  margin-top: 4px;
}

/* UI elements */
.ui-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  background: #fff;
  color: var(--c-text);
  border: 1px solid var(--c-greige);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow-card);
}

.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  background: var(--c-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.btn-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  background: var(--c-dark);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.divider-sample {
  height: 1px;
  background: var(--c-greige);
  margin: 24px 0;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--c-bg-sub);
  border: 1px solid var(--c-greige);
  font-size: 12px;
  color: var(--c-text-sub);
}

@media (max-width: 767px) {
  .demo-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .mock-dark__items {
    grid-template-columns: 1fr;
  }
}