/* ========================================
   FOR BUDDY BAR 4B — Global Styles
   ======================================== */

:root {
  --gold: #c9a84c;
  --gold-light: #e8d5a3;
  --gold-dim: #7a6230;
  --black: #080808;
  --black-mid: #111111;
  --black-soft: #1a1a1a;
  --white: #f4f0ea;
  --white-dim: #a89f8e;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--white);
  font-family: 'Noto Serif JP', serif;
  font-weight: 300;
  overflow-x: hidden;
}

/* NOISE TEXTURE */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.4;
}

/* ========================================
   NAV
   ======================================== */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 4rem;
  background: linear-gradient(to bottom, rgba(8,8,8,0.95), transparent);
  transition: background 0.4s;
}

nav.nav-solid {
  background: rgba(8,8,8,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-logo {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.1rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--white-dim);
  text-decoration: none;
  transition: color 0.3s;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active { color: var(--gold); }

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0; right: 0;
  height: 1px;
  background: var(--gold-dim);
}

/* HAMBURGER (mobile) */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--gold);
  transition: transform 0.3s, opacity 0.3s;
}

.nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}
.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}
.nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* MOBILE MENU */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(8,8,8,0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-mobile.open {
  display: flex;
}

.nav-mobile a {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--white-dim);
  text-decoration: none;
  transition: color 0.3s;
}

.nav-mobile a:hover { color: var(--gold); }

/* ========================================
   PAGE HEADER (sub pages)
   ======================================== */
.page-header {
  min-height: 45vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0 4rem 5rem;
  position: relative;
  overflow: hidden;
}

.page-header .hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 50%, rgba(201,168,76,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 20% 80%, rgba(201,168,76,0.03) 0%, transparent 60%);
}

.page-header .hero-line {
  position: absolute;
  right: 10%;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(201,168,76,0.2) 30%, rgba(201,168,76,0.2) 70%, transparent);
}

.page-header-eyebrow {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.4em;
  color: var(--gold);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 1s 0.3s forwards;
}

.page-header-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--white);
  opacity: 0;
  animation: fadeUp 1s 0.5s forwards;
}

.page-header-title em {
  font-style: italic;
  color: var(--gold);
}

/* ========================================
   HERO (top page)
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 50%, rgba(201,168,76,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 20% 80%, rgba(201,168,76,0.03) 0%, transparent 60%);
}

.hero-line {
  position: absolute;
  right: 10%;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(201,168,76,0.2) 30%, rgba(201,168,76,0.2) 70%, transparent);
}

.hero-eyebrow {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.4em;
  color: var(--gold);
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 1s 0.3s forwards;
}

.hero-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--white);
  opacity: 0;
  animation: fadeUp 1s 0.5s forwards;
}

.hero-title em {
  font-style: italic;
  color: var(--gold);
}

.hero-subtitle {
  margin-top: 2rem;
  font-size: 0.95rem;
  letter-spacing: 0.15em;
  color: var(--white-dim);
  line-height: 2.2;
  opacity: 0;
  animation: fadeUp 1s 0.7s forwards;
}

.hero-cta {
  margin-top: 3.5rem;
  opacity: 0;
  animation: fadeUp 1s 0.9s forwards;
}

.hero-cta a {
  display: inline-block;
  padding: 1rem 3rem;
  border: 1px solid var(--gold-dim);
  color: var(--gold);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-decoration: none;
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
}

.hero-cta a::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
  z-index: -1;
}

.hero-cta a:hover {
  color: var(--black);
}

.hero-cta a:hover::before {
  transform: scaleX(1);
}

.hero-scroll {
  position: absolute;
  bottom: 3rem;
  left: 4rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  opacity: 0;
  animation: fadeUp 1s 1.2s forwards;
}

.hero-scroll span {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.6rem;
  letter-spacing: 0.4em;
  color: var(--white-dim);
}

.scroll-line {
  width: 60px;
  height: 1px;
  background: var(--gold-dim);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: var(--gold);
  animation: scrollLine 2s 1.5s infinite;
}

/* ========================================
   CATCH SECTION
   ======================================== */
.catch-section {
  padding: 8rem 4rem;
  position: relative;
  border-top: 1px solid rgba(201,168,76,0.1);
}

.catch-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(201,168,76,0.1);
  max-width: 1100px;
}

.catch-item {
  background: var(--black);
  padding: 3.5rem;
  transition: background 0.4s;
}

.catch-item:hover {
  background: var(--black-soft);
}

.catch-number {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--gold-dim);
  margin-bottom: 1.5rem;
}

.catch-text {
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  line-height: 1.9;
  color: var(--white-dim);
}

.catch-text strong {
  color: var(--white);
  font-weight: 400;
}

/* ========================================
   CONCEPT
   ======================================== */
.concept {
  padding: 10rem 4rem;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 8rem;
  align-items: center;
  max-width: 1300px;
  margin: 0 auto;
}

.concept-label {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.4em;
  color: var(--gold);
  margin-bottom: 3rem;
}

.concept-heading {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 300;
  line-height: 1.3;
  color: var(--white);
}

.concept-heading em {
  font-style: italic;
  color: var(--gold);
}

.concept-body {
  font-size: 0.9rem;
  line-height: 2.4;
  color: var(--white-dim);
  letter-spacing: 0.05em;
}

.concept-body p + p {
  margin-top: 1.5rem;
}

/* concept page extended */
.concept-full {
  padding: 6rem 4rem 10rem;
  max-width: 1300px;
  margin: 0 auto;
}

.concept-full .concept-block {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 8rem;
  align-items: start;
  padding: 5rem 0;
  border-bottom: 1px solid rgba(201,168,76,0.1);
}

.concept-full .concept-block:last-child {
  border-bottom: none;
}

.concept-block-number {
  font-family: 'Cormorant Garamond', serif;
  font-size: 5rem;
  font-weight: 300;
  color: rgba(201,168,76,0.12);
  line-height: 1;
}

.concept-block-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--white);
  margin-top: 1rem;
  line-height: 1.5;
}

.concept-block-title em {
  color: var(--gold);
  font-style: italic;
}

/* ========================================
   PROGRAMS
   ======================================== */
.programs {
  padding: 8rem 4rem;
  border-top: 1px solid rgba(201,168,76,0.1);
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 2rem;
  margin-bottom: 5rem;
}

.section-label {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.4em;
  color: var(--gold);
}

.section-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 300;
  color: var(--white);
}

.program-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(201,168,76,0.1);
}

.program-item {
  background: var(--black);
  padding: 3rem;
  position: relative;
  transition: background 0.4s;
}

.program-item:hover { background: var(--black-soft); }

.program-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 4rem;
  font-weight: 300;
  color: rgba(201,168,76,0.15);
  line-height: 1;
  margin-bottom: 1.5rem;
}

.program-title {
  font-size: 1rem;
  letter-spacing: 0.1em;
  color: var(--white);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.program-desc {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  line-height: 2;
  color: var(--white-dim);
}

.program-tag {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.3rem 1rem;
  border: 1px solid var(--gold-dim);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  color: var(--gold-dim);
}

/* Program detail (sub page) */
.program-detail {
  padding: 6rem 4rem 10rem;
  max-width: 1100px;
  margin: 0 auto;
}

.program-detail-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 4rem;
  padding: 4rem 0;
  border-bottom: 1px solid rgba(201,168,76,0.1);
  align-items: start;
}

.program-detail-item:last-child {
  border-bottom: none;
}

.program-detail-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 6rem;
  font-weight: 300;
  color: rgba(201,168,76,0.12);
  line-height: 1;
}

.program-detail-title {
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  color: var(--white);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.program-detail-body {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.82rem;
  line-height: 2.2;
  color: var(--white-dim);
  letter-spacing: 0.04em;
}

.program-detail-body p + p {
  margin-top: 1.2rem;
}

.program-detail-meta {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.program-detail-meta span {
  padding: 0.35rem 1.2rem;
  border: 1px solid var(--gold-dim);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--gold-dim);
}

/* ========================================
   PARTNERS
   ======================================== */
.partners {
  padding: 8rem 4rem;
  border-top: 1px solid rgba(201,168,76,0.1);
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem;
  margin-top: 4rem;
  max-width: 900px;
}

.partner-item {
  text-align: center;
}

.partner-icon {
  width: 48px;
  height: 48px;
  border: 1px solid var(--gold-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.1rem;
  color: var(--gold);
}

.partner-name {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--white-dim);
  line-height: 1.8;
}

/* Partner detail (sub page) */
.partner-detail {
  padding: 6rem 4rem 10rem;
  max-width: 1100px;
  margin: 0 auto;
}

.partner-detail-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 4rem;
  padding: 4rem 0;
  border-bottom: 1px solid rgba(201,168,76,0.1);
  align-items: start;
}

.partner-detail-item:last-child {
  border-bottom: none;
}

.partner-detail-icon {
  width: 80px;
  height: 80px;
  border: 1px solid var(--gold-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.6rem;
  color: var(--gold);
}

.partner-detail-name {
  font-size: 1.1rem;
  letter-spacing: 0.12em;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.partner-detail-role {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--gold-dim);
  margin-bottom: 1.5rem;
}

.partner-detail-body {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.82rem;
  line-height: 2.2;
  color: var(--white-dim);
  letter-spacing: 0.04em;
}

/* ========================================
   QUOTE
   ======================================== */
.quote-section {
  padding: 10rem 4rem;
  text-align: center;
  position: relative;
}

.quote-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(201,168,76,0.04) 0%, transparent 70%);
}

.quote-mark {
  font-family: 'Cormorant Garamond', serif;
  font-size: 8rem;
  line-height: 0.5;
  color: rgba(201,168,76,0.15);
  display: block;
  margin-bottom: 3rem;
}

blockquote {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 300;
  font-style: italic;
  line-height: 1.7;
  color: var(--white);
  max-width: 800px;
  margin: 0 auto;
  letter-spacing: 0.05em;
}

blockquote em {
  color: var(--gold);
  font-style: normal;
}

.quote-attr {
  margin-top: 2.5rem;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--white-dim);
}

/* ========================================
   CONTACT
   ======================================== */
.contact {
  padding: 8rem 4rem;
  border-top: 1px solid rgba(201,168,76,0.1);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.contact-heading {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 300;
  line-height: 1.3;
  color: var(--white);
}

.contact-heading em {
  color: var(--gold);
  font-style: italic;
}

.contact-note {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.78rem;
  color: var(--white-dim);
  line-height: 2.2;
  letter-spacing: 0.05em;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-row {
  display: flex;
  gap: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.contact-label {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--gold-dim);
  min-width: 80px;
}

.contact-value {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--white-dim);
  line-height: 1.8;
}

.contact-value a {
  color: var(--gold);
  text-decoration: none;
  transition: color 0.3s;
}

.contact-value a:hover {
  color: var(--gold-light);
}

/* ========================================
   CTA BANNER
   ======================================== */
.cta-banner {
  padding: 6rem 4rem;
  text-align: center;
  border-top: 1px solid rgba(201,168,76,0.1);
  position: relative;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(201,168,76,0.03) 0%, transparent 70%);
}

.cta-banner p {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.82rem;
  color: var(--white-dim);
  letter-spacing: 0.1em;
  margin-bottom: 2.5rem;
  position: relative;
}

.cta-banner .hero-cta {
  opacity: 1;
  animation: none;
  position: relative;
}

/* ========================================
   FOOTER
   ======================================== */
footer {
  padding: 3rem 4rem;
  border-top: 1px solid rgba(201,168,76,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1rem;
  letter-spacing: 0.3em;
  color: var(--gold-dim);
}

.footer-nav {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-nav a {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--white-dim);
  text-decoration: none;
  transition: color 0.3s;
}

.footer-nav a:hover { color: var(--gold); }

.footer-copy {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.2);
}

/* ========================================
   DIVIDER
   ======================================== */
.gold-divider {
  width: 60px;
  height: 1px;
  background: var(--gold-dim);
  margin: 3rem 0;
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scrollLine {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* SCROLL REVEAL */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   PAGE TRANSITION
   ======================================== */
.page-transition {
  animation: pageIn 0.6s ease forwards;
}

@keyframes pageIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
  nav { padding: 1.5rem 2rem; }
  nav .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .hero { padding: 0 2rem; }
  .hero-scroll { left: 2rem; }
  .page-header { padding: 0 2rem 3rem; min-height: 35vh; }

  .catch-section { padding: 5rem 2rem; }
  .catch-grid { grid-template-columns: 1fr; }

  .concept { grid-template-columns: 1fr; gap: 3rem; padding: 6rem 2rem; }
  .concept-full { padding: 4rem 2rem 6rem; }
  .concept-full .concept-block { grid-template-columns: 1fr; gap: 2rem; }

  .programs { padding: 5rem 2rem; }
  .program-list { grid-template-columns: 1fr; }
  .program-detail { padding: 4rem 2rem 6rem; }
  .program-detail-item { grid-template-columns: 1fr; gap: 1.5rem; }

  .partners { padding: 5rem 2rem; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-detail { padding: 4rem 2rem 6rem; }
  .partner-detail-item { grid-template-columns: 1fr; gap: 1.5rem; }

  .contact { padding: 5rem 2rem; grid-template-columns: 1fr; gap: 3rem; }

  .cta-banner { padding: 4rem 2rem; }

  footer { flex-direction: column; gap: 1.5rem; padding: 2rem; text-align: center; }
  .footer-nav { justify-content: center; }
}