/* ============================================================
   あいりす通信 — 佐藤綺星さん非公式ファンサイト
   Design tokens + component styles
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Zen+Kaku+Gothic+New:wght@400;500;700;900&family=M+PLUS+Rounded+1c:wght@400;500;700;800&family=Barlow+Condensed:ital,wght@0,600;0,700;1,600&display=swap');

:root,
[data-theme='light'] {
  /* Surfaces — clean white, warm off-white panels */
  --color-bg: #fffbfb;
  --color-surface: #ffffff;
  --color-surface-2: #fffdfd;
  --color-surface-offset: #fdf1f2;
  --color-surface-offset-2: #fbe3e5;
  --color-surface-dynamic: #f6cdd1;
  --color-divider: #f4dde0;
  --color-border: #f0c7cc;

  /* Text — near-black charcoal, bold like official idol sites */
  --color-text: #1e1a1b;
  --color-text-muted: #6b5c5e;
  --color-text-faint: #ad9799;
  --color-text-inverse: #fffbfb;

  /* Primary accent — Penlight Red (公式ペンライトカラー 赤×白) */
  --color-primary: #d5202f;
  --color-primary-hover: #b01623;
  --color-primary-active: #8c0f1a;
  --color-primary-highlight: #fbdadd;

  /* Secondary accent — deep red variant, framed with a hairline for contrast on white bg */
  --color-gold: #a3121e;
  --color-gold-hover: #870f18;
  --color-gold-active: #690b12;
  --color-gold-highlight: #fbdadd;

  --color-success: #2f7a4c;
  --color-success-highlight: #d7ece0;
  --color-notification: #d5202f;
  --color-notification-highlight: #fbdadd;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 3px oklch(0.2 0.02 20 / 0.08);
  --shadow-md: 0 8px 24px oklch(0.2 0.02 20 / 0.12);
  --shadow-lg: 0 20px 48px oklch(0.2 0.02 20 / 0.18);

  --content-narrow: 640px;
  --content-default: 980px;
  --content-wide: 1220px;
  --content-full: 100%;

  --font-display: 'Zen Kaku Gothic New', 'M PLUS Rounded 1c', 'Hiragino Sans', sans-serif;
  --font-accent: 'Barlow Condensed', 'Zen Kaku Gothic New', sans-serif;
  --font-body: 'M PLUS Rounded 1c', 'Zen Kaku Gothic New', 'Hiragino Sans', sans-serif;
}

[data-theme='dark'] {
  --color-bg: #1a1213;
  --color-surface: #241819;
  --color-surface-2: #2b1c1d;
  --color-surface-offset: #321f21;
  --color-surface-offset-2: #3d2427;
  --color-surface-dynamic: #4a2b2f;
  --color-divider: #4a2b2e;
  --color-border: #5c383c;

  --color-text: #fbeeee;
  --color-text-muted: #cfa4a7;
  --color-text-faint: #8a6367;
  --color-text-inverse: #1a1213;

  --color-primary: #ff6b73;
  --color-primary-hover: #ff8a90;
  --color-primary-active: #ffabb0;
  --color-primary-highlight: #4a2226;

  --color-gold: #f4a0a5;
  --color-gold-hover: #f7b7bb;
  --color-gold-active: #fad0d3;
  --color-gold-highlight: #4a2226;

  --color-success: #7bc396;
  --color-success-highlight: #23362b;
  --color-notification: #ff6b73;
  --color-notification-highlight: #4a2226;

  --shadow-sm: 0 1px 3px oklch(0.05 0.02 20 / 0.4);
  --shadow-md: 0 8px 24px oklch(0.05 0.02 20 / 0.5);
  --shadow-lg: 0 20px 48px oklch(0.05 0.02 20 / 0.6);
}

/* ============================================================
   Type Scale
   ============================================================ */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);
  --text-hero: clamp(2.75rem, 0.5rem + 6vw, 6.5rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
}

/* ============================================================
   Base
   ============================================================ */

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

.wrap {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.wrap--narrow {
  max-width: var(--content-narrow);
}

section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  position: relative;
}

.eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  width: fit-content;
  margin-inline: auto;
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--color-primary);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-text);
  line-height: 1.3;
  font-weight: 700;
}

.section-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
  text-align: center;
}

.section-lead {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 620px;
  margin-bottom: var(--space-10);
  line-height: 1.8;
  text-align: center;
  margin-inline: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), background var(--transition-interactive), color var(--transition-interactive);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

/* ============================================================
   Header
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.header--hidden {
  transform: translateY(-100%);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  gap: var(--space-6);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  min-width: 0;
}

.brand__mark {
  width: 40px;
  height: 40px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand__tag {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav__list {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

.nav__list a {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
  position: relative;
  padding-block: var(--space-1);
}

.nav__list a:hover {
  color: var(--color-primary);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text);
  transition: border-color var(--transition-interactive), transform var(--transition-interactive);
  flex-shrink: 0;
}

.icon-btn:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

.icon-sun { display: none; }
[data-theme='dark'] .icon-moon { display: none; }
[data-theme='dark'] .icon-sun { display: block; }

.menu-btn {
  display: none;
}

/* Mobile nav drawer */
.mobile-nav-toggle-checkbox,
.section-toggle-checkbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav.is-open,
.mobile-nav-toggle-checkbox:checked ~ .mobile-nav {
  transform: translateX(0);
}

.mobile-nav__top {
  display: flex;
  justify-content: flex-end;
  margin-bottom: var(--space-10);
}

.mobile-nav__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.mobile-nav__list a {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.mobile-nav__list a::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding-top: clamp(var(--space-16), 10vw, var(--space-24));
  padding-bottom: clamp(var(--space-12), 6vw, var(--space-20));
  overflow: hidden;
  position: relative;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, color-mix(in oklab, var(--color-bg) 15%, transparent) 0%, var(--color-bg) 92%);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-12);
  align-items: center;
}

.hero__content {
  text-align: center;
}

.hero__content h1 {
  font-size: var(--text-hero);
  margin-bottom: var(--space-5);
}

.hero__content h1 em {
  font-style: normal;
  color: var(--color-primary);
}

.hero__sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 520px;
  line-height: 1.85;
  margin-bottom: var(--space-8);
  margin-inline: auto;
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
  justify-content: center;
}

.hero__stats {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
  justify-content: center;
}

.hero__stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-primary);
}

.hero__stat span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.hero__portrait {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 3/4;
}

.hero__portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__badge {
  position: absolute;
  bottom: var(--space-5);
  left: var(--space-5);
  right: var(--space-5);
  background: color-mix(in oklab, var(--color-surface) 88%, transparent);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-border);
}

.hero__badge p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.hero__badge strong {
  color: var(--color-primary);
  font-family: var(--font-display);
  display: block;
  font-size: var(--text-sm);
  margin-bottom: var(--space-1);
}

/* ============================================================
   Notice banner
   ============================================================ */
.notice {
  background: var(--color-surface-offset);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-4);
}

.notice__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.notice__inner svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ============================================================
   Profile
   ============================================================ */
.profile {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-16);
  align-items: start;
}

.profile__visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 4/5;
}

.profile__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile__facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.fact {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
}

.fact dt {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-1);
}

.fact dd {
  font-family: var(--font-display);
  font-size: var(--text-base);
  color: var(--color-text);
  font-weight: 700;
}

.profile__bio p {
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: var(--space-4);
  font-size: var(--text-base);
  text-align: center;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-6);
  justify-content: center;
}

.tag {
  font-size: var(--text-xs);
  font-weight: 700;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
}

.tag--gold {
  background: var(--color-gold-highlight);
  color: var(--color-gold-active);
}

.source-note {
  margin-top: var(--space-6);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.source-note a {
  color: var(--color-text-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ============================================================
   Timeline
   ============================================================ */
.timeline {
  background: var(--color-surface-offset);
}

.timeline__list {
  list-style: none;
  position: relative;
  margin-top: var(--space-12);
  padding-left: var(--space-10);
  border-left: 2px solid var(--color-border);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-12);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-10) - 6px);
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  border: 3px solid var(--color-surface-offset);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.timeline__date {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 600;
  color: var(--color-primary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
  display: block;
}

.timeline__item h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.timeline__item p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.8;
  max-width: 640px;
}

.timeline__list.is-collapsed .timeline__item--extra {
  display: none;
}

#timeline-toggle-checkbox:checked ~ #timelineList .timeline__item--extra {
  display: list-item;
}

.timeline__toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding: var(--space-3) var(--space-6);
  background: none;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-interactive), color var(--transition-interactive);
}

.timeline__toggle:hover {
  background: var(--color-primary);
  color: #fff;
}

.timeline__toggle--top {
  margin-top: 0;
  margin-bottom: var(--space-6);
}

.timeline__toggle--bottom {
  display: none;
}

#timeline-toggle-checkbox:checked ~ #timelineList ~ .timeline__toggle--bottom,
#discog-toggle-checkbox:checked ~ #discogGrid ~ .timeline__toggle--bottom,
#video-toggle-checkbox:checked ~ #videoGrid ~ .timeline__toggle--bottom {
  display: inline-flex;
}

.toggle-label-expanded {
  display: none;
}

#timeline-toggle-checkbox:checked ~ .timeline__toggle .toggle-label-collapsed,
#discog-toggle-checkbox:checked ~ .timeline__toggle .toggle-label-collapsed,
#video-toggle-checkbox:checked ~ .timeline__toggle .toggle-label-collapsed {
  display: none;
}

#timeline-toggle-checkbox:checked ~ .timeline__toggle .toggle-label-expanded,
#discog-toggle-checkbox:checked ~ .timeline__toggle .toggle-label-expanded,
#video-toggle-checkbox:checked ~ .timeline__toggle .toggle-label-expanded {
  display: inline;
}

/* ============================================================
   Divider image
   ============================================================ */
.divider-img {
  position: relative;
  height: clamp(220px, 32vw, 420px);
  overflow: hidden;
}

.divider-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.divider-img__quote {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-6);
  background: color-mix(in oklab, #fff 55%, transparent);
}

.divider-img__quote p {
  font-family: var(--font-accent);
  font-style: italic;
  color: #1a1a1a;
  font-size: var(--text-xl);
  max-width: 720px;
  line-height: 1.5;
}

/* ============================================================
   Guide (応援ガイド)
   ============================================================ */
.guide-steps__title {
  margin-top: var(--space-10);
  font-size: var(--text-lg);
}

.guide-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
}

.guide-step {
  position: relative;
  background: color-mix(in oklab, var(--color-primary) 6%, var(--color-surface));
  border: 1px solid var(--color-divider);
  border-top: 3px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-5);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive);
}

.guide-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.guide-step__num {
  display: inline-block;
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 600;
  letter-spacing: 0.05em;
  font-size: var(--text-sm);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.guide-step h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-2);
}

.guide-step p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.guide__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.guide-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}

.guide-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.guide-card__num {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-gold);
  margin-bottom: var(--space-4);
  display: block;
}

.guide-card__icon {
  width: 44px;
  height: 44px;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.guide-card h3 {
  font-size: var(--text-base);
  margin-bottom: var(--space-3);
}

.guide-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.guide-card ul {
  margin-top: var(--space-3);
  padding-left: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.penlight-strip {
  margin-top: var(--space-10);
  display: flex;
  align-items: center;
  gap: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-8);
}

.penlight-strip__swatch {
  display: flex;
  flex-shrink: 0;
}

.penlight-strip__swatch span {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  border: 3px solid var(--color-surface);
  margin-left: -10px;
}

.penlight-strip__swatch span:first-child {
  margin-left: 0;
  background: #d5313f;
}

.penlight-strip__swatch span:last-child {
  background: #ffffff;
  border-color: var(--color-border);
}

.penlight-strip p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.penlight-strip strong {
  color: var(--color-text);
  font-family: var(--font-display);
}

/* ============================================================
   SNS Links
   ============================================================ */
.sns-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-10);
}

.sns-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}

.sns-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.sns-card__icon {
  width: 40px;
  height: 40px;
  color: var(--color-primary);
}

.sns-card h3 {
  font-size: var(--text-base);
}

.sns-card p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.sns-card__handle {
  font-family: var(--font-accent);
  font-style: italic;
  color: var(--color-gold-active);
  font-size: var(--text-sm);
}

/* ============================================================
   CTA band
   ============================================================ */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 6vw, var(--space-16));
  text-align: center;
  color: #fff;
}

.cta-band h2 {
  color: #fff;
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

.cta-band p {
  color: color-mix(in oklab, #fff 82%, transparent);
  max-width: 560px;
  margin: 0 auto var(--space-8);
  line-height: 1.8;
}

.cta-band .btn--primary {
  background: #fff;
  color: var(--color-primary);
}

.cta-band .btn--primary:hover {
  background: var(--color-text-inverse);
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--color-surface-offset);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-12) var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-10);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer__brand svg {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.footer__brand span {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
}

.footer p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 380px;
}

.footer h4 {
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}

.footer__links a:hover {
  color: var(--color-primary);
}

.footer__bottom {
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ============================================================
   Topbar (slim announcement band)
   ============================================================ */
.topbar {
  background: var(--color-primary);
  color: #fff;
  text-align: center;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: var(--space-2) var(--space-4);
}

.topbar a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ============================================================
   Quick-jump chips
   ============================================================ */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
  justify-content: center;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 700;
  background: var(--color-surface);
  transition: background var(--transition-interactive), color var(--transition-interactive), transform var(--transition-interactive);
}

.chip:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

/* ============================================================
   News / Topics grid (最新ニュース)
   ============================================================ */
.news-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-8);
  margin-top: var(--space-10);
  align-items: start;
}

.news-layout--single {
  grid-template-columns: 1fr;
}

.news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.news-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.news-card__media {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--color-surface-offset);
}

.news-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-card__media--contain img {
  object-fit: contain;
}

/* ============================================================
   Photobook (写真集)
   ============================================================ */
.photobook-card {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-8);
  margin-top: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: var(--space-6);
}

.photobook-card__media {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-offset);
}

.photobook-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.photobook-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  justify-content: center;
}

.photobook-card__body h3 {
  font-size: var(--text-xl);
}

.news-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.news-card__link {
  display: inline-block;
  margin-top: calc(var(--space-2) * -1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
}

.news-card__link:hover {
  color: var(--color-gold);
}

.news-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.news-card__tag {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  padding: 0.2em 0.7em;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #fff;
  text-transform: uppercase;
}

.news-card__tag--outline {
  background: transparent;
  border: 1.5px solid var(--color-gold);
  color: var(--color-gold);
}

.news-card__date {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

.news-card h3 {
  font-size: var(--text-base);
  line-height: 1.5;
}

.news-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================================
   News rows (image-less list items)
   ============================================================ */
.news-rows {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.news-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-5);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-interactive), transform var(--transition-interactive);
}

.news-row:hover {
  border-color: var(--color-primary);
  transform: translateX(4px);
}

.news-row__date {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  flex-shrink: 0;
  width: 92px;
}

.news-row__tag {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  padding: 0.2em 0.7em;
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  white-space: nowrap;
  flex-shrink: 0;
}

.news-row__body {
  flex: 1;
  min-width: 0;
}

.news-row__body h3 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.news-row__body p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================
   Schedule list (スケジュール)
   ============================================================ */
.schedule-list {
  list-style: none;
  margin-top: var(--space-10);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.schedule-item {
  display: grid;
  grid-template-columns: 120px 90px 1fr;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-interactive), transform var(--transition-interactive);
}

.schedule-item:hover {
  border-color: var(--color-primary);
  transform: translateX(4px);
}

.schedule-item__date {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 700;
  color: var(--color-primary);
  font-size: var(--text-sm);
}

.schedule-item__type {
  font-size: 0.7rem;
  font-weight: 800;
  text-align: center;
  padding: 0.25em 0.6em;
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  white-space: nowrap;
}

.schedule-item__title {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: 600;
}

/* ============================================================
   Reveal animation
   ============================================================ */
[data-reveal] {
  opacity: 1;
  transform: none;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 980px) {
  .hero__grid {
    grid-template-columns: 1fr;
  }

  .news-layout {
    grid-template-columns: 1fr;
  }

  .news-grid {
    max-width: 480px;
  }

  .hero__portrait {
    max-width: 380px;
    aspect-ratio: 4/5;
  }

  .profile {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .profile__visual {
    max-width: 420px;
    aspect-ratio: 4/3;
  }

  .guide__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .guide-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .sns-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .news-row {
    flex-wrap: wrap;
  }

  .news-row__date {
    width: auto;
  }

  .nav__list {
    display: none;
  }

  .menu-btn {
    display: flex;
  }

  .header__inner {
    gap: var(--space-2);
  }

  .brand {
    flex-shrink: 1;
    min-width: 0;
  }

  .header__actions {
    flex-shrink: 0;
  }

  .hero__content h1 {
    font-size: clamp(2.25rem, 10vw, 3.25rem);
  }

  .hero__stats {
    gap: var(--space-6);
  }

  .profile__facts {
    grid-template-columns: 1fr 1fr;
  }

  .guide__grid {
    grid-template-columns: 1fr;
  }

  .sns-grid {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .penlight-strip {
    flex-direction: column;
    text-align: center;
  }

  .divider-img__quote p {
    font-size: var(--text-lg);
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .schedule-item {
    grid-template-columns: 1fr;
    gap: var(--space-2);
    text-align: left;
  }

  .schedule-item__type {
    width: fit-content;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .fact {
    padding: var(--space-3) var(--space-4);
  }
}

/* ============================================================
   Discography (楽曲・参加シングル)
   ============================================================ */
#discography {
  background: var(--color-bg);
}

.discog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.discog-grid.is-collapsed .discog-card--extra {
  display: none;
}

#discog-toggle-checkbox:checked ~ #discogGrid .discog-card--extra {
  display: block;
}

.discog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-8);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.discog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.discog-card--feature {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.discog-card__media {
  margin: calc(var(--space-6) * -1) calc(var(--space-8) * -1) 0;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
}

.discog-card__media img {
  width: 100%;
  height: auto;
  display: block;
}

.discog-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
}

.discog-card__num {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.discog-card__date {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.discog-card h3 {
  font-size: var(--text-lg);
  margin: 0;
}

.discog-card__songs {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.discog-card__songs li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.discog-card__songname {
  color: var(--color-text);
  font-weight: 500;
}

.discog-card__songs a {
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--text-sm);
  white-space: nowrap;
}

.discog-card__songs a:hover {
  color: var(--color-gold);
}

.discog-tag {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 700;
  background: var(--color-divider);
  color: var(--color-gold-active, var(--color-gold));
  white-space: nowrap;
}

.discog-tag--center {
  background: var(--color-primary);
  color: #fff;
}

.discog-tag--unit {
  background: var(--color-gold-highlight);
  color: var(--color-gold-active);
}

.discog-card__note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin: 0;
}

.discog-card__note a {
  color: var(--color-primary);
  font-weight: 600;
}

/* ============================================================
   Videos (動画・YouTube)
   ============================================================ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.video-grid.is-collapsed .video-card--extra {
  display: none;
}

#video-toggle-checkbox:checked ~ #videoGrid .video-card--extra {
  display: block;
}

.video-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.video-card__frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
}

.video-card__frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.video-card__body {
  padding: var(--space-5) var(--space-6);
}

.video-card__tag {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 700;
  background: var(--color-primary);
  color: #fff;
  margin-bottom: var(--space-3);
}

.video-card__body h3 {
  font-size: var(--text-base);
  margin: 0;
  line-height: 1.5;
}

.video-more {
  display: inline-flex;
  margin-top: var(--space-8);
}

@media (max-width: 900px) {
  .discog-grid {
    grid-template-columns: 1fr;
  }
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .video-grid {
    grid-template-columns: 1fr;
  }
  .discog-card__head {
    flex-wrap: wrap;
  }
  .guide-steps {
    grid-template-columns: 1fr;
  }
  .photobook-card {
    grid-template-columns: 1fr;
  }
}

.discog-card__extra-link {
  display: inline-block;
  margin-top: calc(var(--space-2) * -1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
}

.discog-card__extra-link:hover {
  color: var(--color-gold);
}


/* ============================================================
   Latest Single MV Carousel — appears at very top of page,
   modeled on さくねっと's homepage video carousel
   ============================================================ */
.latest-single {
  background: var(--color-bg);
  padding-top: var(--space-12);
}

.latest-single__wrap {
  text-align: center;
}

.latest-single__wrap .eyebrow,
.latest-single__wrap .section-title {
  text-align: center;
}

.latest-carousel {
  position: relative;
  max-width: 880px;
  margin: var(--space-8) auto 0;
}

.latest-carousel__frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-divider);
}

.latest-carousel__frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.latest-carousel__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  z-index: 3;
  transition: background var(--transition-interactive), color var(--transition-interactive), transform var(--transition-interactive);
}

.latest-carousel__nav svg {
  width: 20px;
  height: 20px;
}

.latest-carousel__nav:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-50%) scale(1.08);
}

.latest-carousel__nav--prev {
  left: -20px;
}

.latest-carousel__nav--next {
  right: -20px;
}

.latest-carousel__caption {
  margin-top: var(--space-5);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}

.latest-carousel__dots {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.latest-carousel__dots button {
  width: 9px;
  height: 9px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--color-divider);
  cursor: pointer;
  transition: background var(--transition-interactive), transform var(--transition-interactive);
}

.latest-carousel__dots button.is-active {
  background: var(--color-primary);
  transform: scale(1.3);
}

.latest-promo {
  margin-top: var(--space-10);
  background: var(--color-primary);
}

.latest-promo__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding-block: var(--space-5);
  flex-wrap: wrap;
}

.latest-promo__inner p {
  margin: 0;
  color: #fff;
  font-size: var(--text-sm);
  line-height: 1.7;
}

.latest-promo .btn--primary {
  background: #fff;
  color: var(--color-primary);
  white-space: nowrap;
}

.latest-promo .btn--primary:hover {
  background: var(--color-gold-highlight);
  color: var(--color-gold-active);
  transform: translateY(-2px);
}

@media (max-width: 900px) {
  .latest-carousel__nav--prev {
    left: 6px;
  }
  .latest-carousel__nav--next {
    right: 6px;
  }
  .latest-carousel__nav {
    width: 38px;
    height: 38px;
    background: color-mix(in oklab, var(--color-surface) 85%, transparent);
  }
}

@media (max-width: 640px) {
  .latest-promo__inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .latest-promo .btn--primary {
    width: 100%;
    justify-content: center;
  }
}