/* ===================================================
   らんびー Portfolio — style.css
=================================================== */

/* ---------- Custom Properties ---------- */
:root {
  --c-bg:       #faf9f7;
  --c-bg2:      #f3f1ee;
  --c-surface:  #ffffff;
  --c-border:   rgba(180, 160, 140, 0.25);
  --c-text:     #2a2420;
  --c-text-sub: #8a7d74;
  --c-accent:   #c89070;
  --c-accent2:  #9b6fa0;
  --c-gold:     #c8a96e;
  --c-badge:    #b06090;

  --header-h: 72px;
  --radius:   12px;
  --radius-lg: 20px;
  --shadow:   0 4px 32px rgba(80,40,20,0.09);
  --shadow-lg:0 12px 60px rgba(80,40,20,0.14);

  --font-serif: 'Noto Serif JP', Georgia, serif;
  --font-display: 'Cormorant Garamond', Georgia, serif;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition: 0.35s var(--ease-out);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: auto; font-size: 16px; }
body {
  font-family: var(--font-serif);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- Utilities ---------- */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
}
.section { padding: 120px 0; }

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.fade-in {
  animation: fadeInUp 1.1s var(--ease-out) forwards;
  opacity: 0;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: none; }
}

/* ===================================================
   HEADER
=================================================== */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}
#header.scrolled {
  background: rgba(250, 249, 247, 0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 1px 24px rgba(80,40,20,0.10);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
}

/* Logo */
.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  gap: 2px;
}
.logo-en {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--c-accent);
  font-style: italic;
}
.logo-ja {
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--c-text-sub);
}

/* Nav */
.nav-list {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}
.nav-link {
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--c-text-sub);
  position: relative;
  transition: color var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0; right: 100%;
  height: 1px;
  background: var(--c-accent);
  transition: right var(--transition);
}
.nav-link:hover { color: var(--c-text); }
.nav-link:hover::after { right: 0; }
.cta-link {
  padding: 8px 20px;
  border: 1px solid var(--c-accent);
  border-radius: 100px;
  color: var(--c-accent) !important;
  font-size: 0.78rem;
  transition: background var(--transition), color var(--transition) !important;
}
.cta-link:hover { background: var(--c-accent); color: #fff !important; }
.cta-link::after { display: none; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 1100;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===================================================
   HERO
=================================================== */
.hero {
  position: relative;
  height: 100svh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-bg { position: absolute; inset: 0; }
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: brightness(0.72) saturate(0.9);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    150deg,
    rgba(30,15,10,0.45) 0%,
    rgba(10,5,5,0.18) 55%,
    rgba(80,30,50,0.30) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
  animation-delay: 0.2s;
}
.hero-sub {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.35em;
  opacity: 0.75;
  margin-bottom: 16px;
  font-style: italic;
}
.hero-title {
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  line-height: 1.1;
  margin-bottom: 14px;
  text-shadow: 0 4px 24px rgba(0,0,0,0.4);
}
.hero-caption {
  font-size: 0.88rem;
  letter-spacing: 0.25em;
  opacity: 0.78;
  margin-bottom: 44px;
}
.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 32px;
  border-radius: 100px;
  font-family: var(--font-serif);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform 0.2s, box-shadow var(--transition);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--c-accent);
  color: #fff;
  border: 2px solid var(--c-accent);
  box-shadow: 0 4px 20px rgba(200,144,112,0.30);
}
.btn-primary:hover { background: #b07a5a; box-shadow: 0 8px 30px rgba(200,144,112,0.40); }
.btn-ghost {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border: 2px solid rgba(255,255,255,0.55);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255,255,255,0.18); }

/* Scroll Indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.55);
  font-size: 0.62rem;
  letter-spacing: 0.25em;
  z-index: 1;
}
.hero-scroll-indicator span {
  display: block;
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.35);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { transform: scaleY(1); opacity: 0.55; }
  50%       { transform: scaleY(0.5); opacity: 0.2; }
}

/* ===================================================
   SECTION COMMON HEADERS
=================================================== */
.section-header { margin-bottom: 56px; }
.section-label {
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.35em;
  color: var(--c-accent);
  font-style: italic;
  margin-bottom: 8px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.2;
}

/* ===================================================
   GALLERY
=================================================== */
.gallery-section { background: var(--c-bg2); }

/* Tabs */
.tab-buttons {
  display: flex;
  gap: 0;
  margin-bottom: 48px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 100px;
  padding: 5px;
  width: fit-content;
}
.tab-btn {
  padding: 9px 30px;
  border-radius: 100px;
  border: none;
  background: none;
  font-family: var(--font-serif);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--c-text-sub);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.tab-btn.active {
  background: var(--c-accent);
  color: #fff;
}

/* Tab Content */
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Gallery Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: var(--c-bg);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.gallery-item:hover { transform: translateY(-6px) scale(1.01); box-shadow: var(--shadow-lg); }
.gallery-item img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  display: block;
  transition: transform 0.5s var(--ease-out);
}
.gallery-item:hover img { transform: scale(1.05); }
.gallery-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(30,10,20,0.55) 0%, transparent 55%);
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition);
}
.gallery-item:hover .gallery-overlay { opacity: 1; }
.zoom-icon {
  font-size: 2.5rem;
  color: rgba(255,255,255,0.85);
  line-height: 1;
  transition: transform 0.25s;
}
.gallery-item:hover .zoom-icon { transform: scale(1.15); }

.works-note {
  margin-top: 40px;
  font-size: 0.78rem;
  color: var(--c-text-sub);
  line-height: 1.9;
  text-align: center;
}

/* ===================================================
   ABOUT
=================================================== */
.about-section { background: var(--c-bg); }
.about-content {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 80px;
  align-items: center;
}
.about-intro {
  font-size: 1.05rem;
  line-height: 2;
  margin-bottom: 40px;
  color: var(--c-text);
}
.about-table { display: flex; flex-direction: column; gap: 0; }
.about-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--c-border);
  align-items: center;
}
.about-row:first-child { border-top: 1px solid var(--c-border); }
.about-label {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--c-text-sub);
}
.about-value { font-size: 0.9rem; }
.about-accent {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(ellipse at 30% 30%, rgba(200,169,110,0.25) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 70%, rgba(155,111,160,0.22) 0%, transparent 60%),
    linear-gradient(135deg, #f0e8df 0%, #e8dced 100%);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.about-icon {
  width: 100%;
  max-width: 260px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  border: 4px solid rgba(255,255,255,0.85);
  box-shadow: 0 8px 40px rgba(80,40,20,0.18);
}

/* ===================================================
   LINKS
=================================================== */
.links-section { background: var(--c-bg2); }
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}
.link-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 24px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
}
.link-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--c-accent); }
.link-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--c-bg2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--c-text-sub);
  transition: color var(--transition), background var(--transition);
}
.link-card:hover .link-icon { color: var(--c-accent); background: rgba(200,144,112,0.1); }
.link-icon svg { width: 22px; height: 22px; }
.link-info { flex: 1; }
.link-name { font-size: 0.95rem; font-weight: 500; margin-bottom: 2px; }
.link-desc { font-size: 0.75rem; color: var(--c-text-sub); }
.link-arrow { color: var(--c-text-sub); font-size: 1.1rem; transition: transform var(--transition); }
.link-card:hover .link-arrow { transform: translateX(4px); color: var(--c-accent); }
.link-badge {
  position: absolute;
  top: 12px; right: 14px;
  background: var(--c-badge);
  color: #fff;
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  padding: 3px 9px;
  border-radius: 100px;
}
.commission-card { border-color: rgba(176, 96, 144, 0.28); }
.commission-card:hover { border-color: var(--c-badge); }

/* ===================================================
   CONTACT
=================================================== */
.contact-section { background: var(--c-bg); }
.contact-intro {
  font-size: 1rem;
  line-height: 2;
  margin-bottom: 48px;
  color: var(--c-text);
}
.contact-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.contact-info-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}
.contact-info-title {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--c-accent);
  margin-bottom: 20px;
}
.contact-links-row {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.contact-links-row .btn { justify-content: center; }
.contact-links-row .btn-ghost {
  background: none;
  color: var(--c-text);
  border-color: var(--c-border);
}
.contact-links-row .btn-ghost:hover { border-color: var(--c-accent); color: var(--c-accent); }
.contact-notes {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.contact-notes li {
  font-size: 0.82rem;
  color: var(--c-text-sub);
  padding-left: 16px;
  position: relative;
}
.contact-notes li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--c-accent);
}

/* ===================================================
   FOOTER
=================================================== */
.footer {
  background: var(--c-text);
  color: rgba(255,255,255,0.55);
  padding: 48px 0;
}
.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}
.footer-logo {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.8);
}
.footer-copy { font-size: 0.72rem; letter-spacing: 0.08em; }
.footer-links {
  display: flex;
  gap: 28px;
}
.footer-links a {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.45);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--c-accent); }

/* ===================================================
   LIGHTBOX
=================================================== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: rgba(10, 5, 5, 0.93);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  backdrop-filter: blur(6px);
}
.lightbox.active { opacity: 1; pointer-events: all; }
.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
#lightbox-img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: 8px;
  object-fit: contain;
  box-shadow: 0 0 80px rgba(0,0,0,0.5);
  user-select: none;
  pointer-events: none;
}
.lightbox-caption {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.5);
}
.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: fixed;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  font-size: 1.3rem;
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition);
  backdrop-filter: blur(4px);
}
.lightbox-close { top: 24px; right: 24px; font-size: 1rem; }
.lightbox-prev  { left: 24px; top: 50%; transform: translateY(-50%); font-size: 1.8rem; }
.lightbox-next  { right: 24px; top: 50%; transform: translateY(-50%); font-size: 1.8rem; }
.lightbox-close:hover { background: rgba(255,255,255,0.25); }
.lightbox-prev:hover  { background: rgba(255,255,255,0.2); transform: translateY(-50%) translateX(-2px); }
.lightbox-next:hover  { background: rgba(255,255,255,0.2); transform: translateY(-50%) translateX(2px); }

/* ===================================================
   RESPONSIVE
=================================================== */
@media (max-width: 900px) {
  .about-content { grid-template-columns: 1fr; }
  .about-accent { aspect-ratio: unset; max-width: 280px; margin: 0 auto; }
  .contact-info-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }
  .hamburger { display: flex; }

  #nav {
    position: fixed;
    top: 0; right: 0;
    width: 80%; max-width: 320px;
    height: 100svh;
    background: rgba(250,249,247,0.97);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease-out);
    box-shadow: -8px 0 40px rgba(0,0,0,0.12);
  }
  #nav.open { transform: translateX(0); }
  .nav-list { flex-direction: column; gap: 28px; text-align: center; }
  .nav-link { font-size: 1rem; }
  .cta-link { margin-top: 8px; }

  .section { padding: 80px 0; }
  .container { padding: 0 20px; }
  .hero-title { font-size: 3rem; }

  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .links-grid { grid-template-columns: 1fr; }
  .about-row { grid-template-columns: 120px 1fr; }
}

@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .gallery-item img { aspect-ratio: 3 / 4; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .lightbox-prev { left: 8px; }
  .lightbox-next { right: 8px; }
}