/* ============================================
   Serene Narrative — Portfolio Stylesheet
   ============================================ */

@font-face {
  font-family: "GenEiKoburiMin6";
  src: url("../fonts/GenEiKoburiMin6-R.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Surface */
  --surface: #f9f9fb;
  --surface-dim: #d9dadc;
  --surface-bright: #f9f9fb;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f3f3f5;
  --surface-container: #edeeef;
  --surface-container-high: #e7e8ea;
  --surface-container-highest: #e2e2e4;

  /* On Surface */
  --on-surface: #1a1c1d;
  --on-surface-variant: #41484c;
  --inverse-surface: #2e3132;
  --inverse-on-surface: #f0f1f2;
  --outline: #71787c;
  --outline-variant: #c1c7cc;

  /* Primary */
  --primary: #0b4356;
  --primary-accent: #2a5a6e;
  --on-primary: #ffffff;
  --primary-container: #2a5a6e;
  --on-primary-container: #a1d0e7;
  --primary-fixed: #bee9ff;
  --inverse-primary: #9ecde4;

  /* Secondary / Tertiary */
  --secondary: #436370;
  --secondary-container: #c6e8f7;
  --on-secondary-container: #496976;
  --tertiary: #57360c;
  --tertiary-container: #f0bd87;

  /* Geometry */
  --radius-sm: 0.125rem;
  --radius: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

  /* Spacing */
  --unit: 4px;
  --gutter: 24px;
  --margin-desktop: 80px;
  --margin-mobile: 20px;
  --container-max: 1120px;

  /* Fonts */
  --font-display: "Libre Caslon Text", "Noto Serif JP", serif;
  --font-body: "Noto Serif", "Noto Serif JP", serif;
  --font-label: "Hanken Grotesk", "Noto Sans JP", sans-serif;

  /* Shadow */
  --shadow-soft: 0 4px 20px rgba(42, 90, 110, 0.04);
  --shadow-card: 0 1px 0 rgba(42, 90, 110, 0.04), 0 8px 28px rgba(42, 90, 110, 0.06);
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--on-surface);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Subtle ambient color — only visible behind glass elements when they scroll over it.
   Kept very light so the page reads as white. */
.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 40% at 10% 0%,  rgba(158, 205, 228, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 95% 30%, rgba(240, 189, 135, 0.10) 0%, transparent 65%),
    radial-gradient(ellipse 60% 50% at 75% 95%, rgba(42, 90, 110, 0.06)  0%, transparent 60%);
}

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

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

button {
  font: inherit;
  cursor: pointer;
}

/* ---------- Typography ---------- */
.display-lg {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.headline-lg {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(24px, 3.6vw, 32px);
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.headline-md {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(20px, 2.4vw, 24px);
  line-height: 1.35;
}
.body-lg {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.8;
}
.body-md {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}
.label-sm {
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------- Layout helpers ---------- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--margin-desktop);
}
@media (max-width: 720px) {
  .container {
    padding-inline: var(--margin-mobile);
  }
}

.section {
  padding-block: clamp(48px, 8vw, 96px);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--outline-variant);
}
.section-head__title {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
}
.section-head__num {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--on-surface-variant);
}

@media (max-width: 720px) {
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

/* ---------- Top progress bar ---------- */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--primary-fixed);
  width: 0;
  z-index: 100;
  transition: width 0.1s linear;
}

/* ---------- Glass utility (used for floating / interactive surfaces only) ---------- */
.glass {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(15px) saturate(160%);
  -webkit-backdrop-filter: blur(15px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.08);
}

/* ---------- Nav (sticky → glass while floating over content) ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(15px) saturate(180%);
  -webkit-backdrop-filter: blur(15px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.06);
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.7);
}
.nav__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 18px var(--margin-desktop);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
@media (max-width: 720px) {
  .nav__inner {
    padding: 14px var(--margin-mobile);
  }
}
.nav__brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--on-surface);
}
.nav__brand-mark {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-accent);
  transform: translateY(-3px);
}
.nav__links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav__link {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  transition: color 0.2s ease;
  position: relative;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 1px;
  background: var(--primary-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.nav__link:hover {
  color: var(--on-surface);
}
.nav__link:hover::after,
.nav__link.is-active::after {
  transform: scaleX(1);
}
.nav__link.is-active {
  color: var(--on-surface);
}

/* Mobile nav */
.nav__toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 8px;
  color: var(--on-surface);
}
/* Mobile nav drawer — floats over content → glass */
@media (max-width: 720px) {
  .nav__links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: auto;
    flex-direction: column;
    align-items: stretch;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    padding: 20px;
    padding-top: 72px;
    gap: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.08);
    transform: translateY(-100%);
    transition: transform 0.25s ease;
  }
  .nav__links.is-open {
    transform: translateY(0);
  }
  .footer .nav__links {
    position: static;
    transform: none;
    flex-direction: row;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    padding: 0;
    border: 0;
    box-shadow: none;
    gap: 28px;
  }
  .nav__link {
    padding-block: 8px;
    font-size: 13px;
  }
  .nav__link::after {
    display: none;
  }
  .nav__toggle {
    display: inline-flex;
  }
}

/* ---------- Hero ---------- */
.hero {
  padding-block: clamp(64px, 10vw, 120px) clamp(56px, 8vw, 100px);
  position: relative;
  overflow: hidden;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
}
@media (max-width: 860px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* Left — key visual */
.hero__visual {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
  max-width: 520px;
  justify-self: center;
}
.hero__visual-slot {
  width: 100%;
  height: 100%;
  --slot-bg: transparent;
  --slot-border: transparent;
}
/* Subtle water-ripple ornament behind the key visual */
.hero__visual::before {
  content: "";
  position: absolute;
  inset: -10%;
  background:
    radial-gradient(ellipse at 30% 30%, rgba(158, 205, 228, 0.35) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 70%, rgba(240, 189, 135, 0.18) 0%, transparent 65%);
  filter: blur(8px);
  z-index: -1;
  pointer-events: none;
}

/* Right — text */
.hero__text {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.hero__eyebrow {
  font-family: "GenEiKoburiMin6", "Noto Serif JP", serif;
  font-style: normal;
  font-size: clamp(16px, 2vw, 22px);
  color: var(--on-surface-variant);
  letter-spacing: 0.25em;
  margin: 0 0 12px;
}
.hero__title-row {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.hero__title {
  font-family: var(--font-display);
  font-size: clamp(56px, 9vw, 112px);
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0 0 0 -0.15em;
  font-weight: 400;
  color: var(--on-surface);
  white-space: nowrap;
}
.hero__avatar {
  --slot-bg: var(--surface-container-low);
  --slot-border: rgba(255, 255, 255, 0.6);
  width: clamp(56px, 7vw, 84px);
  height: clamp(56px, 7vw, 84px);
  box-shadow: 0 8px 24px rgba(11, 67, 86, 0.12);
  border-radius: 50%;
  flex-shrink: 0;
}
.hero__lede {
  margin-top: 28px;
  max-width: 46ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.9;
  color: var(--on-surface-variant);
}
.hero__lede a {
  color: var(--primary-accent);
  border-bottom: 1px solid currentColor;
  transition: color 0.2s ease;
}
.hero__lede a:hover {
  color: var(--primary);
}

/* ---------- Featured Works ---------- */
.featured {
  position: relative;
}
.featured__list {
  display: flex;
  flex-direction: column;
  gap: clamp(56px, 6vw, 96px);
}
.work-card {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.work-card:nth-child(even) {
  grid-template-columns: 1.05fr 0.95fr;
}
.work-card:nth-child(even) .work-card__media {
  order: 2;
}
@media (max-width: 720px) {
  .work-card,
  .work-card:nth-child(even) {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .work-card:nth-child(even) .work-card__media {
    order: 0;
  }
}

.work-card__media {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--surface-container-low);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.work-card__media:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(42, 90, 110, 0.12);
}
.work-card__media::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      45deg,
      transparent 0,
      transparent 14px,
      rgba(42, 90, 110, 0.045) 14px,
      rgba(42, 90, 110, 0.045) 15px
    ),
    linear-gradient(160deg, color-mix(in srgb, var(--primary-fixed) 35%, var(--surface-container-lowest)) 0%, var(--surface-container-low) 100%);
}
.work-card__media-tag {
  position: absolute;
  left: 16px;
  top: 16px;
  font-family: var(--font-label);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--on-surface);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(15px) saturate(160%);
  -webkit-backdrop-filter: blur(15px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 6px 10px;
  border-radius: var(--radius);
  z-index: 2;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.08);
}
.work-card__media-num {
  position: absolute;
  right: 18px;
  bottom: 14px;
  font-family: var(--font-display);
  font-size: clamp(64px, 9vw, 120px);
  color: rgba(11, 67, 86, 0.16);
  line-height: 1;
  font-style: italic;
}

.work-card__body {
  padding-block: 8px;
}
.work-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: var(--secondary-container);
  color: var(--primary);
}
.tag--ghost {
  background: transparent;
  border: 1px solid var(--outline-variant);
  color: var(--on-surface-variant);
}
.work-card__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  font-weight: 400;
}
.work-card__title-link {
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.work-card__title-link:hover {
  border-color: currentColor;
}
.work-card__subtitle {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--on-surface-variant);
  margin-bottom: 20px;
  font-size: 16px;
}
.work-card__desc {
  font-size: 16px;
  line-height: 1.85;
  color: var(--on-surface-variant);
  margin-bottom: 24px;
  max-width: 50ch;
}
.work-card__meta {
  display: flex;
  gap: 32px;
  margin-bottom: 28px;
  padding-block: 16px;
  border-top: 1px solid var(--outline-variant);
  border-bottom: 1px solid var(--outline-variant);
}
.work-card__meta dt {
  font-family: var(--font-label);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  margin-bottom: 4px;
}
.work-card__meta dd {
  margin: 0;
  font-size: 14px;
  color: var(--on-surface);
}

/* ---------- Teaser card (coming soon) ---------- */
.work-card__media--teaser {
  cursor: default;
  pointer-events: none;
  overflow: hidden;
}
.work-card__media--teaser:hover {
  transform: none;
  box-shadow: var(--shadow-soft);
}
.work-card__teaser-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  filter: blur(14px) brightness(0.35) sepia(0.3);
  transform: scale(1.1);
}
.work-card__teaser-img--clear {
  filter: brightness(0.75);
  transform: scale(1);
}
.work-card__media-tag--teaser {
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
  font-size: 13px;
  letter-spacing: 0.22em;
  padding: 8px 16px;
}
.work-card__title--teaser {
  color: var(--outline);
  letter-spacing: 0.15em;
  user-select: none;
}
.work-card__desc--teaser {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--on-surface-variant);
}
.btn--disabled {
  pointer-events: none;
  opacity: 0.6;
  cursor: default;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 14px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all 0.2s ease;
}
.btn--primary {
  background: var(--primary-accent);
  color: var(--on-primary);
  transition: all 0.25s ease;
}
.btn--primary:hover {
  background: var(--primary);
  box-shadow: 0 8px 32px 0 rgba(11, 67, 86, 0.22);
  transform: translateY(-1px);
}
.btn--ghost {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary-accent);
  transition: all 0.25s ease;
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(15px) saturate(160%);
  -webkit-backdrop-filter: blur(15px) saturate(160%);
  border-color: rgba(255, 255, 255, 0.6);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.08);
  transform: translateY(-1px);
}
.btn__arrow {
  transition: transform 0.2s ease;
}
.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* ---------- Activities ---------- */
.activities {
  background: var(--surface-container-low);
}
.activities__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 960px) {
  .activities__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 480px) {
  .activities__grid {
    grid-template-columns: 1fr;
  }
}
.activity-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 220px;
  border: 1px solid transparent;
  box-shadow: var(--shadow-soft);
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
  position: relative;
  overflow: hidden;
}
.activity-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 2px;
  background: var(--primary-accent);
  transition: width 0.35s ease;
}
.activity-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(15px) saturate(160%);
  -webkit-backdrop-filter: blur(15px) saturate(160%);
  border-color: rgba(255, 255, 255, 0.6);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
}
.activity-card:hover::before {
  width: 100%;
}
.activity-card__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.activity-card__kind {
  font-family: var(--font-label);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
}
.activity-card__arrow {
  color: var(--primary-accent);
  transition: transform 0.25s ease;
}
.activity-card:hover .activity-card__arrow {
  transform: translate(2px, -2px);
}
.activity-card__name {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: -0.01em;
  margin-top: auto;
}
.activity-card__desc {
  font-size: 14px;
  color: var(--on-surface-variant);
  line-height: 1.65;
}

/* ---------- External Links ---------- */
.external__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 720px) {
  .external__grid {
    grid-template-columns: 1fr;
  }
}
.external-card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: all 0.3s ease;
}
.external-card:hover {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(15px) saturate(160%);
  -webkit-backdrop-filter: blur(15px) saturate(160%);
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
}
.external-card__name {
  font-family: var(--font-display);
  font-size: 22px;
}
.external-card__hint {
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  white-space: nowrap;
  margin-top: 4px;
}
.external-card__icon {
  color: var(--primary-accent);
}

/* ---------- Footer ---------- */
.footer {
  padding-block: 56px 48px;
  background: var(--surface);
}
.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  flex-wrap: wrap;
}
.footer__brand {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1;
  letter-spacing: -0.02em;
}
.footer__motto {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--on-surface-variant);
  max-width: 38ch;
  margin-top: 8px;
}
.footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--outline-variant);
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
}

/* ---------- List pages (works / scripts) ---------- */
.page-hero {
  padding-block: clamp(48px, 8vw, 96px) clamp(32px, 5vw, 56px);
}
.page-hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: end;
}
@media (max-width: 720px) {
  .page-hero__inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}
.page-hero__title {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 80px);
  line-height: 1.05;
  margin: 12px 0 0;
  letter-spacing: -0.02em;
}
.page-hero__desc {
  color: var(--on-surface-variant);
  line-height: 1.85;
  max-width: 48ch;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-block: 24px 12px;
  align-items: center;
  border-bottom: 1px solid var(--outline-variant);
}
.filter-bar__label {
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  margin-right: 12px;
}
.chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.1em;
  padding: 7px 14px;
  border-radius: var(--radius-full);
  background: transparent;
  border: 1px solid var(--outline-variant);
  color: var(--on-surface-variant);
  cursor: pointer;
  transition: all 0.25s ease;
}
.chip:hover {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(15px) saturate(160%);
  -webkit-backdrop-filter: blur(15px) saturate(160%);
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--primary);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.08);
}
.chip.is-active {
  background: var(--primary-accent);
  border-color: var(--primary-accent);
  color: var(--on-primary);
}

.work-index {
  margin-top: 0;
}
.work-index__row {
  display: grid;
  grid-template-columns: 40px 1fr auto auto auto;
  gap: 28px;
  align-items: center;
  padding-block: 20px;
  padding-inline: 20px;
  border-bottom: 1px solid var(--outline-variant);
  cursor: pointer;
  transition: padding 0.3s ease, background 0.3s ease, backdrop-filter 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  border-radius: var(--radius);
}
.work-index__row--has-thumb {
  grid-template-columns: 72px 1fr auto auto auto;
}
.work-index__row--btn::after {
  content: none;
}
.work-index__overlay-link {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.work-index__sublinks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
  position: relative;
  z-index: 2;
}
.work-index__sublink {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: var(--secondary-container);
  color: var(--primary);
  transition: background 0.2s ease;
}
.work-index__sublink:hover {
  background: var(--primary-fixed);
}
.work-index__thumb {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  display: block;
  flex-shrink: 0;
}
.work-index__thumb--empty {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-lg);
  background: var(--surface-container-low);
}
.work-index__row:hover {
  padding-inline: 20px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(15px) saturate(160%);
  -webkit-backdrop-filter: blur(15px) saturate(160%);
  border-color: rgba(255, 255, 255, 0.6);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.08);
}
.work-index__row::after {
  content: "→";
  font-family: var(--font-display);
  color: var(--primary-accent);
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  transform: translateX(-6px);
}
.work-index__row:hover::after {
  opacity: 1;
  transform: translateX(0);
}
.work-index__num {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 24px;
  color: var(--on-surface-variant);
}
.work-index__title-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.work-index__title {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 24px);
  line-height: 1.3;
  letter-spacing: -0.005em;
}
.work-index__subtitle {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  color: var(--on-surface-variant);
}
.work-index__kind {
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  min-width: 96px;
  text-align: right;
}
.work-index__date {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--on-surface-variant);
  min-width: 84px;
  text-align: right;
}
@media (max-width: 720px) {
  .work-index__row {
    grid-template-columns: 40px 1fr;
    grid-template-rows: auto auto;
    gap: 6px 16px;
    padding-block: 20px;
  }
  .work-index__row--has-thumb {
    grid-template-columns: 56px 1fr;
  }
  .work-index__row::after {
    display: none;
  }
  .work-index__num {
    grid-row: 1 / span 2;
    align-self: start;
    font-size: 18px;
  }
  .work-index__thumb {
    display: none;
  }
  .work-index__row--has-thumb .work-index__thumb {
    display: block;
    width: 56px;
    height: 56px;
    grid-row: 1 / span 2;
    align-self: center;
  }
  .work-index__row--has-thumb .work-index__num {
    display: none;
  }
  .work-index__title-wrap {
    grid-column: 2;
  }
  .work-index__kind,
  .work-index__date {
    grid-column: 2;
    text-align: left;
    min-width: 0;
  }
  .work-index__kind {
    display: inline-flex;
    align-items: center;
    gap: 12px;
  }
  .work-index__kind::after {
    content: "·";
  }
}

/* ---------- Tweaks Panel base override ---------- */
.tweaks-panel {
  font-family: var(--font-label);
}

/* ---------- Utility ---------- */
.eyebrow {
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
}

/* ---------- Reveal animation (premium fade-up) ----------
   Elements start 20px below their resting position and invisible.
   Adding .is-visible eases them to opacity 1 / translateY 0 with
   an iOS-style ease-out (cubic-bezier expo-out). reveal.js stamps
   --reveal-delay per element so siblings stagger by ~100ms. */
.fade-up {
  opacity: 0;
  transform: translate3d(0, 20px, 0);
  transition:
    opacity 1100ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 1100ms cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}
.fade-up.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}
@media (prefers-reduced-motion: reduce) {
  .fade-up {
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}
.divider-dot {
  display: inline-block;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--outline);
  margin-inline: 8px;
  transform: translateY(-3px);
}

/* ============================================
   Seasonal Theming
   ============================================ */

/* 🌸 Spring (3–5月) — 桜・新緑 */
html[data-season="spring"] {
  --primary:               #6d2b52;
  --primary-accent:        #8a4a6a;
  --primary-container:     #8a4a6a;
  --on-primary-container:  #fce4ec;
  --primary-fixed:         #f8bbd0;
  --inverse-primary:       #d4a0b8;
  --secondary-container:   #fce4ec;
  --on-secondary-container:#7a3a60;
}
html[data-season="spring"] .ambient {
  background:
    radial-gradient(ellipse 60% 40% at 10%  0%,  rgba(248,187,208,0.25) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 95% 30%, rgba(167,220,150,0.15) 0%, transparent 65%),
    radial-gradient(ellipse 60% 50% at 75% 95%, rgba(138, 74,106,0.06) 0%, transparent 60%);
}
html[data-season="spring"] .hero__visual::before {
  background:
    radial-gradient(ellipse at 30% 30%, rgba(248,187,208,0.45) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 70%, rgba(167,220,150,0.25) 0%, transparent 65%);
}

/* 🌊 Summer (6–8月) — 海・空 */
html[data-season="summer"] {
  --primary:               #00496d;
  --primary-accent:        #006494;
  --primary-container:     #006494;
  --on-primary-container:  #b3e5fc;
  --primary-fixed:         #81d4fa;
  --inverse-primary:       #4fc3f7;
  --secondary-container:   #e0f4ff;
  --on-secondary-container:#005174;
}
html[data-season="summer"] .ambient {
  background:
    radial-gradient(ellipse 60% 40% at 10%  0%,  rgba(129,212,250,0.22) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 95% 30%, rgba(100,220,200,0.15) 0%, transparent 65%),
    radial-gradient(ellipse 60% 50% at 75% 95%, rgba(  0,100,148,0.06) 0%, transparent 60%);
}
html[data-season="summer"] .hero__visual::before {
  background:
    radial-gradient(ellipse at 30% 30%, rgba(129,212,250,0.40) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 70%, rgba(100,220,200,0.22) 0%, transparent 65%);
}

/* 🍂 Autumn (9–11月) — 紅葉・土 */
html[data-season="autumn"] {
  --primary:               #5c2c00;
  --primary-accent:        #7a4019;
  --primary-container:     #7a4019;
  --on-primary-container:  #ffe0b2;
  --primary-fixed:         #ffcc80;
  --inverse-primary:       #ffb74d;
  --secondary-container:   #fff3e0;
  --on-secondary-container:#6d3a0a;
}
html[data-season="autumn"] .ambient {
  background:
    radial-gradient(ellipse 60% 40% at 10%  0%,  rgba(255,204,128,0.22) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 95% 30%, rgba(210,100, 50,0.14) 0%, transparent 65%),
    radial-gradient(ellipse 60% 50% at 75% 95%, rgba(122, 64, 25,0.08) 0%, transparent 60%);
}
html[data-season="autumn"] .hero__visual::before {
  background:
    radial-gradient(ellipse at 30% 30%, rgba(255,204,128,0.40) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 70%, rgba(210,100, 50,0.22) 0%, transparent 65%);
}

/* ❄️ Winter (12–2月) — デフォルトのまま */