/* ========================================
   HONJOH AYUMI — Multi-Artist Homepage
   Monotone / Premium / Artistic
   ======================================== */

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --black: #0a0a0a;
  --dark: #1a1a1a;
  --gray-900: #222;
  --gray-800: #333;
  --gray-700: #444;
  --gray-600: #555;
  --gray-500: #777;
  --gray-400: #999;
  --gray-300: #bbb;
  --gray-200: #ddd;
  --gray-100: #eee;
  --off-white: #f5f5f3;
  --white: #fafaf8;

  --font-display: 'Cormorant Garamond', 'Georgia', serif;
  --font-body: 'Noto Sans JP', 'Helvetica Neue', sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 10rem;

  --transition: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--dark);
  background-color: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

/* --- Loader --- */
.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-line {
  width: 120px;
  height: 1px;
  background: var(--gray-700);
  position: relative;
  overflow: hidden;
}

.loader-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--white);
  animation: loaderSlide 1.2s ease-in-out infinite;
}

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

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  transition: background 0.4s ease, padding 0.4s ease;
  mix-blend-mode: difference;
}

.nav.scrolled {
  mix-blend-mode: normal;
  background: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(20px);
  padding: 0.75rem var(--space-md);
  border-bottom: 1px solid var(--gray-200);
}

.nav.scrolled .nav-logo,
.nav.scrolled .nav-menu a,
.nav.scrolled .nav-social a {
  color: var(--dark);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--white);
  transition: color 0.4s;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 101;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--white);
  transition: var(--transition);
}

.nav.scrolled .nav-toggle span {
  background: var(--dark);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-md);
}

.nav-menu a {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  transition: color 0.4s, opacity 0.3s;
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.3s ease;
}

.nav-menu a:hover::after {
  width: 100%;
}

/* Nav Social Icons */
.nav-social {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.nav-social a {
  color: var(--white);
  opacity: 0.6;
  transition: opacity 0.3s, color 0.4s, transform 0.3s;
  display: flex;
  align-items: center;
}

.nav-social a:hover {
  opacity: 1;
  transform: translateY(-1px);
}

.nav.scrolled .nav-social a {
  color: var(--dark);
}

/* --- Hero --- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  filter: grayscale(15%) contrast(1.05) brightness(1.05);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10, 10, 10, 0.82) 0%,
    rgba(10, 10, 10, 0.35) 40%,
    rgba(10, 10, 10, 0.1) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: var(--space-xl) var(--space-md);
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-lg);
}

.hero-text {
  flex: 1;
}

.hero-portrait {
  flex-shrink: 0;
  width: 260px;
  height: 340px;
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255,255,255,0.1);
}

.hero-portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: grayscale(20%) contrast(1.05);
  transition: filter 0.6s;
}

.hero-portrait:hover .hero-portrait-img {
  filter: grayscale(0%) contrast(1);
}

.hero-tag {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: var(--space-sm);
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 300;
  color: var(--white);
  line-height: 0.95;
  margin-bottom: var(--space-md);
}

.hero-title-line {
  display: block;
  font-size: clamp(3.5rem, 12vw, 9rem);
  letter-spacing: 0.05em;
}

.hero-title-line:nth-child(2) {
  font-style: italic;
  font-weight: 300;
  margin-left: 0.5em;
}

.hero-sub {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--gray-300);
  line-height: 2;
  max-width: 400px;
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-md);
  right: var(--space-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
}

.hero-scroll span {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-500);
  writing-mode: vertical-rl;
}

.hero-scroll-line {
  width: 1px;
  height: 60px;
  background: var(--gray-700);
  position: relative;
  overflow: hidden;
}

.hero-scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 1px;
  height: 100%;
  background: var(--gray-300);
  animation: scrollLine 2s ease-in-out infinite;
}

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

/* --- Sections (shared) --- */
.section {
  padding: var(--space-2xl) 0;
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section-inner--narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  text-align: center;
}

.section-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 300;
  line-height: 1.3;
  margin-bottom: var(--space-md);
  color: var(--dark);
}

.section-body {
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--gray-600);
  max-width: 520px;
  margin-bottom: var(--space-sm);
}

.section-body.center {
  margin-left: auto;
  margin-right: auto;
}

/* --- Split Layout --- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.split--reverse {
  direction: rtl;
}

.split--reverse > * {
  direction: ltr;
}

/* --- About --- */
.about {
  background: var(--white);
}

.about-roles {
  display: flex;
  gap: 1px;
  margin-top: var(--space-lg);
  background: var(--gray-200);
}

.role {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1.5rem 1.2rem;
  background: var(--white);
  flex: 1;
  transition: all 0.4s;
}

.role:hover {
  background: var(--dark);
  color: var(--white);
}

.role-name {
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-weight: 400;
}

.about-mosaic {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 2fr 1fr;
  gap: 3px;
  aspect-ratio: 1;
}

.mosaic-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(40%);
  transition: filter 0.6s;
}

.mosaic-img:hover {
  filter: grayscale(0%);
}

.mosaic-main {
  grid-column: 1 / -1;
}

/* --- Work / Gallery (Horizontal Scroll) --- */
.work {
  background: var(--off-white);
}

.gallery-full {
  width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--gray-400) transparent;
  padding: var(--space-md) 0;
  cursor: grab;
}

.gallery-full:active {
  cursor: grabbing;
}

.gallery-full::-webkit-scrollbar {
  height: 4px;
}

.gallery-full::-webkit-scrollbar-track {
  background: transparent;
}

.gallery-full::-webkit-scrollbar-thumb {
  background: var(--gray-400);
  border-radius: 2px;
}

.gallery-track {
  display: flex;
  flex-wrap: nowrap;
  gap: 3px;
  padding: 0 max(var(--space-md), calc((100vw - 1200px) / 2));
  width: max-content;
  min-width: 100%;
}

.gallery-card {
  position: relative;
  flex: 0 0 340px;
  width: 340px;
  min-width: 340px;
  height: 440px;
  overflow: hidden;
  background: var(--dark);
}

.gallery-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(50%);
  transition: filter 0.6s, transform 0.6s;
}

.gallery-card:hover .gallery-card-img {
  filter: grayscale(0%);
  transform: scale(1.04);
}

.gallery-card-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-md);
  background: linear-gradient(to top, rgba(10,10,10,0.85) 0%, transparent 100%);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transform: translateY(100%);
  transition: transform 0.5s var(--transition);
}

.gallery-card:hover .gallery-card-info {
  transform: translateY(0);
}

.gallery-card-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--white);
  font-style: italic;
}

.gallery-card-medium {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-400);
}

.work-cta {
  margin-top: var(--space-lg);
  text-align: center;
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 1rem 2.5rem;
  background: var(--dark);
  color: var(--white);
  border: 1px solid var(--dark);
  cursor: pointer;
  transition: all 0.4s ease;
}

.btn:hover {
  background: transparent;
  color: var(--dark);
}

.btn--outline {
  background: transparent;
  color: var(--dark);
  border-color: var(--gray-300);
}

.btn--outline:hover {
  background: var(--dark);
  color: var(--white);
  border-color: var(--dark);
}

/* --- Media Section --- */
.media {
  background: var(--white);
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  margin-top: var(--space-md);
}

.media-card {
  display: block;
  background: var(--off-white);
  transition: all 0.4s;
}

.media-card:hover {
  background: var(--dark);
  color: var(--white);
}

.media-card-inner {
  padding: var(--space-lg);
}

.media-card-badge {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: var(--space-sm);
}

.media-card-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 300;
  font-style: italic;
  margin-bottom: var(--space-sm);
}

.media-card-desc {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: var(--space-md);
  transition: color 0.4s;
}

.media-card:hover .media-card-desc {
  color: var(--gray-400);
}

.media-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--gray-500);
  transition: color 0.4s;
}

.media-card:hover .media-card-link {
  color: var(--white);
}

/* --- Farm --- */
.farm {
  background: var(--off-white);
}

.farm-stats {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 300;
  line-height: 1;
  color: var(--dark);
}

.stat-unit {
  font-size: 0.9rem;
  color: var(--gray-500);
  margin-top: 0.25rem;
}

.stat-label {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-top: 0.5rem;
}

.farm-visual {
  position: relative;
}

.farm-photo {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  filter: grayscale(30%);
  transition: filter 0.6s;
}

.farm-photo:hover {
  filter: grayscale(0%);
}

.farm-visual-label {
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-top: var(--space-sm);
}

/* --- YouTube --- */
.youtube {
  background: var(--dark);
  color: var(--white);
}

.youtube .section-label {
  color: var(--gray-500);
}

.youtube .section-title {
  color: var(--white);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.youtube .section-body {
  color: var(--gray-400);
}

.yt-cta {
  margin-top: var(--space-lg);
}

.youtube .btn--outline {
  color: var(--white);
  border-color: var(--gray-700);
}

.youtube .btn--outline:hover {
  background: var(--white);
  color: var(--dark);
  border-color: var(--white);
}

/* --- SNS Section --- */
.sns {
  background: var(--off-white);
}

.sns-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--gray-200);
  margin-top: var(--space-md);
}

.sns-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: var(--space-lg) var(--space-sm);
  background: var(--off-white);
  transition: all 0.4s;
}

.sns-card:hover {
  background: var(--dark);
  color: var(--white);
}

.sns-card-name {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-500);
  transition: color 0.4s;
}

.sns-card:hover .sns-card-name {
  color: var(--gray-400);
}

.sns-card-handle {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 400;
}

/* --- Footer --- */
.footer {
  background: var(--black);
  color: var(--gray-400);
  padding: var(--space-xl) 0 var(--space-md);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--gray-800);
}

.footer-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 300;
  color: var(--white);
  line-height: 1;
  letter-spacing: 0.05em;
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--gray-600);
  margin-top: var(--space-sm);
  line-height: 1.8;
}

.footer-heading {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: var(--space-sm);
}

.social-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.social-list a {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--gray-400);
  transition: color 0.3s;
  position: relative;
}

.social-list a:hover {
  color: var(--white);
}

.footer-bottom {
  padding-top: var(--space-md);
  font-size: 0.7rem;
  color: var(--gray-700);
  letter-spacing: 0.05em;
}

/* --- Animations --- */
[data-animate] {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--transition), transform 0.8s var(--transition);
}

[data-animate="fade-right"] {
  transform: translateX(-40px);
}

[data-animate="fade-left"] {
  transform: translateX(40px);
}

[data-animate].visible {
  opacity: 1;
  transform: translate(0, 0);
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    inset: 0;
    background: var(--black);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s, visibility 0.5s;
  }

  .nav-menu.open {
    opacity: 1;
    visibility: visible;
  }

  .nav-menu a {
    font-size: 1.2rem;
    color: var(--white);
  }

  .nav-toggle.open span:first-child {
    transform: rotate(45deg) translate(3px, 3px);
  }

  .nav-toggle.open span:last-child {
    transform: rotate(-45deg) translate(3px, -3px);
  }

  .hero-split {
    flex-direction: column-reverse;
    align-items: flex-start;
  }

  .hero-portrait {
    width: 160px;
    height: 200px;
  }

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

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

  .split,
  .split--reverse {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .split--reverse {
    direction: ltr;
  }

  .section {
    padding: var(--space-xl) 0;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

  .about-roles {
    flex-wrap: wrap;
  }

  .role {
    min-width: calc(50% - 1px);
  }

  .gallery-card {
    width: 280px;
    height: 360px;
  }
}

@media (max-width: 600px) {
  .hero-title-line {
    font-size: 3rem;
  }

  .hero-title-line:nth-child(2) {
    margin-left: 0.25em;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

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

  .gallery-card {
    width: 260px;
    height: 340px;
  }
}