/* ==========================================================================
   Design System & Styling (Mobile-First Upgrades & Gestures)
   Project: Personal Branding Portfolio & Business Card
   ========================================================================== */

/* Variables */
:root {
  --color-bg: #FAF9F6;
  --color-text: #121212;
  --color-text-muted: #7A7A7A;
  --color-border: rgba(18, 18, 18, 0.1);
  --color-accent: #121212;
  --color-gold: #C5A880;
  
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  
  --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-quick: all 0.2s ease-out;
  --transition-card: transform 0.95s var(--ease-spring);
  
  /* Custom Spring Easing (Physics-based) */
  --ease-spring: linear(
    0, 0.009, 0.035 2.1%, 0.141, 0.281 6.7%, 0.723 12.9%, 0.938 16.7%, 1.017,
    1.077 23.5%, 1.102 26.6%, 1.104 29.8%, 1.066 38.3%, 1.018 47.9%, 1.002 57.3%,
    0.999 70.8%, 1
  );
  --ease-spring-soft: cubic-bezier(0.175, 0.885, 0.32, 1.15);
}

/* Dark Theme Variables */
html[data-theme="dark"] {
  --color-bg: #121212;
  --color-text: #FAF9F6;
  --color-text-muted: #A0A0A0;
  --color-border: rgba(250, 249, 246, 0.1);
  --color-accent: #FAF9F6;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  cursor: none;
  overflow-x: hidden;
  overscroll-behavior: none;
  transition: background-color 0.5s ease, color 0.5s ease;
}

body {
  overflow-x: hidden;
  line-height: 1.62;
  font-weight: 300;
  position: relative;
  transition: background-color 0.5s ease, color 0.5s ease;
}

/* Tactile Grain Overlay */
.grain-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.05;
  pointer-events: none;
  z-index: 9999;
}

/* Custom Cursor (PC Only) */
.custom-cursor {
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-text);
  border-radius: 50%;
  position: fixed;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 10000;
  transition: width 0.3s ease, height 0.3s ease, background-color 0.3s ease;
  mix-blend-mode: difference;
  background-color: transparent;
}

.custom-cursor-dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-text);
  border-radius: 50%;
  position: fixed;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 10001;
  mix-blend-mode: difference;
}

body.hover-interactive .custom-cursor {
  width: 60px;
  height: 60px;
  background-color: rgba(250, 249, 246, 0.15);
  border-color: rgba(250, 249, 246, 0.4);
}

body.hover-interactive .custom-cursor-dot {
  transform: translate(-50%, -50%) scale(1.5);
}

/* Touch Ripple Effect (Mobile Touch Feedback) */
.touch-ripple {
  position: absolute;
  border-radius: 50%;
  background-color: rgba(18, 18, 18, 0.12);
  transform: scale(0);
  animation: rippleEffect 0.65s cubic-bezier(0.1, 0.8, 0.3, 1);
  pointer-events: none;
  z-index: 99;
}

@keyframes rippleEffect {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* Make clickables relative for Ripple placement */
.btn, .filter-btn, .work-list-item, .slider-arrow, .role-accordion-header {
  position: relative;
  overflow: hidden;
}

/* Typography Utilities */
.serif {
  font-family: var(--font-serif);
}

.italic {
  font-style: italic;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 2.25rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--color-text);
  background: transparent;
  color: var(--color-text);
  cursor: none;
  transition: var(--transition-smooth);
}

.btn-primary:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 4%;
  z-index: 100;
  background: transparent;
  border: none;
  pointer-events: none;
  transition: background-color 0.4s ease, backdrop-filter 0.4s ease, padding 0.4s ease;
}

/* Scrolled header background — desktop only */
@media (min-width: 901px) {
  .site-header.scrolled {
    background-color: rgba(250, 249, 246, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 1rem 4%;
    border-bottom: 1px solid var(--color-border);
  }

  html[data-theme="dark"] .site-header.scrolled {
    background-color: rgba(18, 18, 18, 0.85);
  }
}

html[data-theme="dark"] .site-header {
  background: transparent;
}

.logo-text {
  display: none;
}

.site-nav.desktop-nav {
  display: none;
}

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  position: relative;
  padding: 0.25rem 0;
  transition: var(--transition-smooth);
  opacity: 0.6;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-text);
  transition: var(--transition-smooth);
}

.nav-link:hover {
  opacity: 1;
}

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

/* Layout Utilities */
.section-padding {
  padding: 6rem 4% 5rem 4%;
}

.section-container {
  max-width: 1140px;
  margin: 0 auto;
}

.max-width-small {
  max-width: 600px;
}

.grid {
  display: grid;
  gap: 4rem;
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.align-center {
  align-items: center;
}

/* Section Header */
.section-title {
  font-size: 2.5rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: 4.5rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 45px;
  height: 1px;
  background-color: var(--color-text);
  margin-top: 0.75rem;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-bottom: 3.5rem;
  max-width: 600px;
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 0;
  position: relative;
  overflow: hidden;
  /* Text color overrides for on-image readability */
  color: #FAF9F6;
}

/* ---- Fullscreen Background Visual ---- */
.hero-visual-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

/* Video element (when swapped in) */
.hero-visual-bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Photo Slideshow (CSS-only crossfade + Ken Burns) */
.hero-bg-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  animation: heroFade 24s ease-in-out infinite;
  will-change: opacity;
}

/* Stagger: Each image fades in at different times within the 24s cycle */
/* 4 images → each visible ~6s, with overlap for smooth crossfade */
.hero-bg-slide:nth-child(1) {
  animation-delay: 0s;
}
.hero-bg-slide:nth-child(2) {
  animation-delay: 6s;
}
.hero-bg-slide:nth-child(3) {
  animation-delay: 12s;
}
.hero-bg-slide:nth-child(4) {
  animation-delay: 18s;
}

@keyframes heroFade {
  0%      { opacity: 0; transform: scale(1); }
  4%      { opacity: 1; }
  25%     { opacity: 1; transform: scale(1.08); }
  29%     { opacity: 0; transform: scale(1.08); }
  100%    { opacity: 0; transform: scale(1); }
}

/* ---- Dark Scrim (gradient overlay for text readability) ---- */
.hero-scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    135deg,
    rgba(0, 0, 0, 0.7) 0%,
    rgba(0, 0, 0, 0.45) 40%,
    rgba(0, 0, 0, 0.3) 100%
  );
  pointer-events: none;
}

/* ---- Background Ticker ---- */
.hero-bg-ticker {
  position: absolute;
  top: 55%;
  left: 0;
  width: 100%;
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 2;
  overflow: hidden;
  opacity: 0.06;
  white-space: nowrap;
  user-select: none;
}

.ticker-track {
  display: flex;
  width: max-content;
  animation: ticker 45s linear infinite;
}

.ticker-item {
  font-size: clamp(6rem, 12vw, 15rem);
  font-weight: 600;
  letter-spacing: 0.05em;
  padding-right: 2rem;
  color: #FAF9F6;
}

@keyframes ticker {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(-25%, 0, 0);
  }
}

/* ---- Hero Content (sits on top of scrim) ---- */
.hero-container {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
  max-width: 750px;
  margin: 0 auto;
  padding: 8rem 4% 4rem 4%;
}

.hero-profile-side {
  display: flex;
  flex-direction: column;
}

.hero-tag {
  font-size: 1.15rem;
  color: rgba(250, 249, 246, 0.6);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(4rem, 8vw, 7.5rem);
  line-height: 1.05;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
  color: #FAF9F6;
  text-shadow: 0 2px 40px rgba(0, 0, 0, 0.3);
}

.hero-lead {
  font-size: 1.05rem;
  color: rgba(250, 249, 246, 0.7);
  line-height: 1.75;
  margin-bottom: 3rem;
}

.hero-lead strong {
  color: #FAF9F6;
  font-weight: 500;
}

/* Fact Lists inside Hero — override colors for dark bg */
.hero-facts {
  margin-bottom: 2.5rem;
}

.hero-section .fact-list li {
  color: rgba(250, 249, 246, 0.7);
}

.hero-section .fact-list li::before {
  background-color: var(--color-gold);
  opacity: 0.8;
}

.hero-section .fact-list li strong {
  color: #FAF9F6;
}

.hero-section .fact-list li.fact-domain {
  border-top-color: rgba(250, 249, 246, 0.15);
  color: rgba(250, 249, 246, 0.5);
}

.fact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.fact-list li {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  position: relative;
  padding-left: 1.25rem;
}

.fact-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  background-color: var(--color-text);
  border-radius: 50%;
  opacity: 0.6;
}

.fact-list li strong {
  color: var(--color-text);
  font-weight: 500;
}

.fact-list li.fact-domain {
  margin-top: 0.5rem;
  border-top: 1px solid var(--color-border);
  padding-top: 0.75rem;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  opacity: 0.85;
}

.fact-list li.fact-domain::before {
  display: none;
}

/* Hero CTA Button — frosted glass style on dark background */
.hero-section .btn-primary {
  background-color: rgba(250, 249, 246, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: #FAF9F6;
  border: 1px solid rgba(250, 249, 246, 0.2);
}

.hero-section .btn-primary:hover {
  background-color: rgba(250, 249, 246, 0.22);
  border-color: rgba(250, 249, 246, 0.4);
}

/* ---- Hero Timeline (compact, inline) ---- */
.hero-timeline {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(250, 249, 246, 0.12);
}

.hero-timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.hero-timeline-item {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(250, 249, 246, 0.06);
}

.hero-timeline-item:last-child {
  border-bottom: none;
}

.hero-timeline-year {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--color-gold);
  white-space: nowrap;
  min-width: 3.5rem;
  flex-shrink: 0;
}

.hero-timeline-role {
  font-size: 0.85rem;
  color: rgba(250, 249, 246, 0.65);
  line-height: 1.5;
  letter-spacing: 0.01em;
}

/* About / Roles Accordion Section */
.about-section {
  border-bottom: none;
}

/* ---- Roles Accordion ---- */
.roles-accordion {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border);
}

.role-accordion-item {
  border-bottom: 1px solid var(--color-border);
}

/* Accordion Header (collapsed row) */
.role-accordion-header {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 1.5rem 0.5rem;
  background: none;
  border: none;
  color: var(--color-text);
  font-family: var(--font-sans);
  cursor: pointer;
  gap: 1.25rem;
  text-align: left;
  transition: background-color 0.3s ease;
  position: relative;
}

.role-accordion-header:hover {
  background-color: rgba(197, 168, 128, 0.04);
}

html[data-theme="dark"] .role-accordion-header:hover {
  background-color: rgba(197, 168, 128, 0.06);
}

.role-acc-num {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-style: italic;
  color: var(--color-text-muted);
  opacity: 0.3;
  flex-shrink: 0;
  min-width: 2rem;
}

.role-acc-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  flex-shrink: 0;
  min-width: 140px;
}

.role-acc-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  font-weight: 500;
  flex-grow: 1;
}

.role-acc-chevron {
  flex-shrink: 0;
  color: var(--color-text-muted);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

/* Expanded chevron rotates */
.role-accordion-item.is-open .role-acc-chevron {
  transform: rotate(180deg);
}

/* Expanded header subtle gold accent */
.role-accordion-item.is-open .role-acc-name {
  color: var(--color-gold);
}

/* Accordion Body (collapsible content) */
.role-accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.55s cubic-bezier(0.16, 1, 0.3, 1);
}

.role-accordion-inner {
  display: flex;
  gap: 2rem;
  padding: 0 0.5rem 2rem 0.5rem;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.4s ease 0.08s, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1) 0.08s;
}

.role-accordion-item.is-open .role-accordion-inner {
  opacity: 1;
  transform: translateY(0);
}

/* Accordion Image */
.role-acc-image {
  flex-shrink: 0;
  width: 220px;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: 3px;
  border: 1px solid var(--color-border);
}

.role-acc-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(60%);
  transition: filter 0.6s ease;
}

.role-accordion-item.is-open .role-acc-image img {
  filter: grayscale(0%);
}

/* Accordion Details */
.role-acc-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Ripple support for accordion items */
.role-accordion-header {
  overflow: hidden;
  position: relative;
}

/* Minimalist fact lists inside accordion */
.role-fact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.role-fact-list li {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  position: relative;
  padding-left: 1rem;
}

.role-fact-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 4px;
  height: 4px;
  background-color: var(--color-text);
  border-radius: 50%;
  opacity: 0.4;
}

.role-fact-list li strong {
  color: var(--color-text);
  font-weight: 500;
}

/* Skills & Expertise Section */
.skills-section {
  border-top: 1px solid var(--color-border);
}

.skills-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
}

.skill-row {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 2rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  transition: background-color 0.4s ease;
}

/* Right column items also get a left border on desktop */
.skill-row:nth-child(even) {
  border-left: 1px solid var(--color-border);
}

/* Top row items get a top border */
.skill-row:nth-child(1),
.skill-row:nth-child(2) {
  border-top: 1px solid var(--color-border);
}

.skill-row:hover {
  background-color: rgba(197, 168, 128, 0.04);
}

html[data-theme="dark"] .skill-row:hover {
  background-color: rgba(197, 168, 128, 0.06);
}

.skill-num {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--color-text-muted);
  opacity: 0.3;
  flex-shrink: 0;
  min-width: 2rem;
  line-height: 1.4;
  padding-top: 0.1rem;
}

.skill-body {
  flex: 1;
}

.skill-name {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.skill-desc {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 0.6rem;
}

.skill-tools {
  display: block;
  font-size: 0.72rem;
  color: var(--color-gold);
  letter-spacing: 0.04em;
  line-height: 1.5;
  margin-top: 0.5rem;
}

/* Works Section — Inverted Dark Background */
.portfolio-section {
  background-color: #121212;
  color: #FAF9F6;
  position: relative;
  border-bottom: none;
}

/* In dark mode, use a slightly lighter shade so Works still contrasts */
html[data-theme="dark"] .portfolio-section {
  background-color: #1A1A1A;
}

.portfolio-section .section-title,
.portfolio-section .section-subtitle-ja {
  color: #FAF9F6;
}

.portfolio-section .section-subtitle-ja {
  opacity: 0.5;
}

.portfolio-filters {
  display: flex;
  gap: 2rem;
  margin-bottom: 3.5rem;
  border-bottom: 1px solid rgba(250, 249, 246, 0.12);
  padding-bottom: 1rem;
}

.filter-btn {
  background: transparent;
  border: none;
  color: rgba(250, 249, 246, 0.45);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  padding: 0.5rem 0;
  position: relative;
  transition: var(--transition-smooth);
}.filter-btn::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-gold);
  transition: var(--transition-smooth);
}

.filter-btn.active {
  color: var(--color-gold);
}

.filter-btn.active::after {
  width: 100%;
}

.filter-btn:hover {
  color: var(--color-gold);
}

/* ---- Uniform Square Grid Layout ---- */
.works-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.works-grid-item {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 6px;
  cursor: pointer;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.4s ease;
}

.works-grid-item:hover {
  transform: scale(1.03);
  box-shadow: 0 16px 48px rgba(197, 168, 128, 0.25);
  z-index: 2;
}

/* ---- Grid Item Image ---- */
.grid-item-image {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.grid-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.works-grid-item:hover .grid-item-image img {
  transform: scale(1.1);
}

/* ---- Grid Item Overlay ---- */
.grid-item-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.25rem;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.7) 0%,
    rgba(0, 0, 0, 0.15) 50%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
}

.works-grid-item:hover .grid-item-overlay {
  opacity: 1;
}

/* Always show overlay on touch devices (no hover) */
@media (hover: none) {
  .grid-item-overlay {
    opacity: 1;
    background: linear-gradient(
      to top,
      rgba(0, 0, 0, 0.6) 0%,
      rgba(0, 0, 0, 0.1) 45%,
      transparent 100%
    );
  }
}

.grid-item-title {
  font-size: 1rem;
  font-weight: 400;
  color: #FAF9F6;
  letter-spacing: 0.02em;
  margin-bottom: 0.25rem;
  line-height: 1.3;
}

.grid-item-cat {
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: rgba(250, 249, 246, 0.6);
}

/* ---- Filtered Out State ---- */
.works-grid-item.is-filtered-out {
  display: none;
}


/* Project Dialog (Modal popup) styling */
.dialogs-container {
  position: relative;
}

dialog.project-dialog {
  border: none;
  background-color: var(--color-bg);
  color: var(--color-text);
  max-width: 800px;
  width: 90vw;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  box-shadow: 0 30px 80px rgba(18, 18, 18, 0.4);
  padding: 0;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.92);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.7s var(--ease-spring), opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  display: block; /* To override default display none for transitions */
  visibility: hidden;
  z-index: 1000;
  overflow-y: auto;
  max-height: 90vh;
}

dialog.project-dialog[open] {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
}

/* Blur & dim background */
dialog.project-dialog::backdrop {
  background-color: rgba(18, 18, 16, 0.7);
  backdrop-filter: blur(15px);
  opacity: 0;
  transition: opacity 0.5s ease;
}

dialog.project-dialog[open]::backdrop {
  opacity: 1;
}

/* Prevent body scrolling when open */
body.dialog-open {
  overflow: hidden;
}

.dialog-content {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
}

.dialog-close-btn {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: none; /* customized */
  z-index: 100;
  transition: var(--transition-smooth);
}

.dialog-close-btn:hover {
  background: var(--color-text);
  color: var(--color-bg);
  transform: rotate(90deg);
}

/* Video Wrapper for Dialog */
.dialog-content .video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  background-color: #000;
  border-bottom: 1px solid var(--color-border);
}

.dialog-content .video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Slider inside Dialog */
.dialog-slider-wrapper {
  position: relative;
  width: 100%;
  border-bottom: 1px solid var(--color-border);
}

.dialog-slider-wrapper .slider-container {
  width: 100%;
  aspect-ratio: 16 / 10;
  position: relative;
  overflow: hidden;
  background-color: rgba(18, 18, 18, 0.02);
}

.dialog-slider-wrapper .slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.dialog-slider-wrapper .slide.active {
  opacity: 1;
  z-index: 2;
}

.dialog-slider-wrapper .slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.dialog-slider-wrapper .slider-controls {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  gap: 0.75rem;
  z-index: 10;
}

.dialog-slider-wrapper .slider-arrow {
  background-color: var(--color-bg);
  border: 1px solid var(--color-text);
  color: var(--color-text);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: none;
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.dialog-slider-wrapper .slider-arrow:hover {
  background-color: var(--color-text);
  color: var(--color-bg);
}

/* Dialog Text Content */
.dialog-text {
  padding: 3rem 2.5rem;
  background-color: var(--color-bg);
}

.dialog-text h3 {
  font-size: 1.85rem;
  font-weight: 400;
  margin-bottom: 1.5rem;
}

.dialog-text p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

/* Slide meta improvements */
.slide-divider {
  font-size: 0.72rem;
  color: var(--color-border);
  user-select: none;
}

.slide-date {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--color-gold);
  border: 1px solid rgba(197, 168, 128, 0.25);
  padding: 0.15rem 0.4rem;
  border-radius: 2px;
  line-height: 1;
}

/* Project Spec Grid inside Dialogs */
.project-spec-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--color-border);
  margin-top: 2.5rem;
}

.spec-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  align-items: center;
  padding: 1.1rem 0;
  border-bottom: 1px dashed var(--color-border);
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-label {
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  font-weight: 500;
  text-transform: uppercase;
}

.spec-value {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--color-text);
}

/* Chronology Timeline Section */
.chronology-section {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.chronology-grid {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 5rem;
  align-items: start;
}

.chronology-sticky-side {
  position: sticky;
  top: 100px;
}

.chronology-intro {
  margin-top: 2rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.chronology-timeline-side {
  position: relative;
  padding-left: 2.5rem;
}

.timeline-line {
  position: absolute;
  left: 0;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 1px;
  background-color: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 3.5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity;
}

.timeline-item.revealed {
  opacity: 1;
  transform: translateY(0);
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -2.5rem;
  top: 0.5rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--color-bg);
  border: 2px solid var(--color-gold);
  transform: translateX(-50%);
  transition: background-color 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 2;
}

.timeline-item:hover .timeline-dot {
  background-color: var(--color-gold);
  transform: translateX(-50%) scale(1.4);
}

.timeline-year {
  font-size: 1.5rem;
  font-style: italic;
  font-weight: 500;
  color: var(--color-gold);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.timeline-content {
  display: flex;
  flex-direction: column;
}

.timeline-role {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.timeline-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

@media (max-width: 900px) {
  .chronology-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .chronology-sticky-side {
    position: relative;
    top: 0;
  }
}

@media (max-width: 600px) {
  .dialog-text {
    padding: 2rem 1.5rem;
  }
  .spec-row {
    grid-template-columns: 1fr;
    gap: 0.3rem;
    padding: 0.8rem 0;
    align-items: flex-start;
  }
}

/* Business Card Section */
.card-preview-section {
  border-bottom: 1px solid var(--color-border);
}

.spec-label {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: inline-block;
  width: 70px;
  margin-top: 0.5rem;
  font-weight: 500;
}

.highlight-text {
  border-left: 2px solid var(--color-text);
  padding-left: 1.25rem;
  color: var(--color-text-muted);
  margin: 1.5rem 0 2rem 0;
  font-size: 0.95rem;
}

.card-meta {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.card-interactive-side {
  display: flex;
  justify-content: center;
  align-items: center;
  perspective: 1200px;
  padding: 2rem 0;
}

.card-3d-wrapper {
  width: 450px;
  height: 270px;
  cursor: none;
  transform-style: preserve-3d;
}

.business-card-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.95s var(--ease-spring);
}

.business-card-inner.is-flipped {
  transform: rotateY(180deg);
}

.card-side {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 2px;
  box-shadow: 0 25px 60px rgba(18, 18, 18, 0.35);
  background-color: #121212;
  overflow: hidden;
}

.qr-triggered-effect {
  animation: qrPulse 1.5s infinite alternate;
}

@keyframes qrPulse {
  0% {
    box-shadow: 0 25px 60px rgba(18, 18, 18, 0.35), inset 0 0 0 1px rgba(250, 249, 246, 0.05);
  }
  100% {
    box-shadow: 0 30px 60px rgba(197, 168, 128, 0.25), inset 0 0 0 1.5px #C5A880;
  }
}

/* Contact Section */
.contact-section {
  border-top: 1px solid var(--color-border);
}

/* LINE CTA — high visibility in both themes */
.contact-section .btn-primary {
  border-color: var(--color-gold);
  color: var(--color-gold);
  font-weight: 600;
}

.contact-section .btn-primary:hover {
  background-color: var(--color-gold);
  color: #121212;
  border-color: var(--color-gold);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 3.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text);
  font-weight: 500;
}

.form-input {
  background-color: rgba(18, 18, 18, 0.01);
  border: 1px solid var(--color-border);
  padding: 1rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  font-size: 0.9rem;
  border-radius: 0;
  transition: var(--transition-smooth);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-text);
  background-color: rgba(18, 18, 18, 0.02);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.btn-submit {
  align-self: flex-start;
  background-color: var(--color-text);
  color: var(--color-bg);
  border: none;
  font-weight: 500;
  padding: 1rem 3.5rem;
}

.btn-submit:hover {
  background-color: var(--color-text-muted);
  color: var(--color-bg);
}

/* Footer */
.site-footer {
  padding: 4.5rem 4%;
  border-top: 1px solid var(--color-border);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 2.5rem;
}

.footer-link {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.footer-link:hover {
  color: var(--color-text);
}

/* Responsive Layout (Mobile Override) */
@media (max-width: 900px) {
  /* Hide Custom Cursor completely on Mobile */
  .custom-cursor, .custom-cursor-dot {
    display: none;
  }
  
  html {
    cursor: auto; /* Fallback to system cursor on mobile */
  }
  
  /* Make clickables behave normally with touch */
  .btn, .filter-btn, .slider-arrow, .works-grid-item, .role-accordion-header {
    cursor: pointer;
  }
  
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }

  /* Roles Accordion — mobile stack */
  .role-accordion-header {
    padding: 1.25rem 0.25rem;
    gap: 0.75rem;
  }

  .role-acc-name {
    font-size: 1.1rem;
    min-width: auto;
    flex: 1;
  }

  .role-acc-title {
    display: none;
  }

  .role-accordion-inner {
    flex-direction: column;
    gap: 1.25rem;
    padding: 0 0.25rem 1.5rem 0.25rem;
  }

  .role-acc-image {
    width: 100%;
  }
  
  .skills-list {
    grid-template-columns: 1fr;
  }
  
  .skill-row:nth-child(even) {
    border-left: none;
  }
  
  .skill-row:nth-child(2) {
    border-top: none;
  }
  
  .hero-split-container {
    grid-template-columns: 1fr;
    gap: 3rem;
    padding-top: 4rem;
  }
  
  .hero-animation-side {
    max-width: 500px;
    margin: 0 auto;
  }
  
  .section-padding {
    padding: 4rem 4% 3rem 4%;
  }

  /* Responsive Works Grid Overrides */
  .works-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }

  .portfolio-filters {
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
    gap: 1.25rem;
    padding-bottom: 0.75rem;
    margin-bottom: 2.5rem;
    flex-wrap: nowrap;
  }

  .portfolio-filters::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    white-space: nowrap;
    flex-shrink: 0;
  }

  .grid-item-title {
    font-size: 0.85rem;
  }

  .grid-item-cat {
    font-size: 0.55rem;
  }

  .grid-item-overlay {
    padding: 0.85rem;
  }
  
  .order-mobile-1 {
    order: 1;
  }
  .order-mobile-2 {
    order: 2;
  }
  
  .slider-controls {
    bottom: -1.5rem;
  }
  
  .project-narrative {
    margin-top: 3.5rem;
  }
}

@media (max-width: 600px) {
  .site-header {
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem 4%;
  }
  
  .site-nav {
    gap: 1.5rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
}

/* ==========================================================================
   Language Switcher & Bilingual Visibilities
   ========================================================================== */
.lang-switch-container {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  margin-left: 2rem;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  transition: var(--transition-quick);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 300;
  border-bottom: 1px solid transparent;
}

.lang-btn.active {
  color: var(--color-gold);
  font-weight: 600;
  border-bottom-color: var(--color-gold);
}

.lang-btn:hover {
  color: var(--color-gold);
}

.lang-separator {
  color: var(--color-border);
  font-size: 0.75rem;
}

/* Bilingual visibility rules */
html[lang="ja"] .lang-en {
  display: none !important;
}
html[lang="en"] .lang-ja {
  display: none !important;
}

@media (max-width: 600px) {
  .lang-switch-container {
    margin-left: 0;
    margin-top: 0.5rem;
  }
}

/* ==========================================================================
   Premium Design Enhancements (Reveal, 3D inertia, Fullscreen Menu)
   ========================================================================== */

/* Section Title Block */
.section-title-block {
  margin-bottom: 3rem;
  position: relative;
}

.section-title-block .section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  display: block;
}

.section-title-block .section-title::after {
  display: none; /* Remove legacy line */
}

.section-subtitle-ja {
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-weight: 400;
  display: block;
}

/* Reveal Elements (Scroll Animations) */
.reveal-element {
  opacity: 0;
  filter: blur(4px);
  transform: translateY(20px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), 
              filter 0.9s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity, filter;
}

.reveal-element.revealed {
  opacity: 1;
  filter: blur(0) brightness(1);
  transform: translateY(0);
}

.reveal-group .reveal-item {
  opacity: 0;
  filter: blur(3px);
  transform: translateY(16px);
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1), 
              filter 0.85s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity, filter;
}

.reveal-group.revealed .reveal-item {
  opacity: 1;
  filter: blur(0) brightness(1);
  transform: translateY(0);
}

/* Delay modifiers for stagger reveal inside reveal-group */
.reveal-group.revealed .reveal-item:nth-child(1) { transition-delay: 0.05s; }
.reveal-group.revealed .reveal-item:nth-child(2) { transition-delay: 0.1s; }
.reveal-group.revealed .reveal-item:nth-child(3) { transition-delay: 0.15s; }
.reveal-group.revealed .reveal-item:nth-child(4) { transition-delay: 0.2s; }
.reveal-group.revealed .reveal-item:nth-child(5) { transition-delay: 0.25s; }
.reveal-group.revealed .reveal-item:nth-child(6) { transition-delay: 0.3s; }
.reveal-group.revealed .reveal-item:nth-child(7) { transition-delay: 0.35s; }
.reveal-group.revealed .reveal-item:nth-child(8) { transition-delay: 0.4s; }
.reveal-group.revealed .reveal-item:nth-child(n+9) { transition-delay: 0.45s; }

/* Floating Hamburger Menu Button — no background, auto-invert via blend mode */
.menu-btn {
  display: block;
  background: none;
  border: none;
  width: 32px;
  height: 32px;
  position: fixed;
  top: 1.5rem;
  right: 5%;
  cursor: pointer;
  z-index: 115;
  pointer-events: all;
  mix-blend-mode: difference;
  padding: 0;
}

.menu-btn-line {
  display: block;
  position: absolute;
  height: 2px;
  width: 22px;
  background: #fff;
  border-radius: 2px;
  left: 5px;
  transition: top 0.25s ease, transform 0.25s ease, opacity 0.2s ease;
}

.menu-btn-line:nth-child(1) {
  top: 10px;
}

.menu-btn-line:nth-child(2) {
  top: 20px;
}

/* Active State → X */
.menu-btn.active {
  mix-blend-mode: normal;
  z-index: 115;
}

.menu-btn.active .menu-btn-line {
  background: var(--color-text);
}

.menu-btn.active .menu-btn-line:nth-child(1) {
  top: 15px;
  transform: rotate(45deg);
}

.menu-btn.active .menu-btn-line:nth-child(2) {
  top: 15px;
  transform: rotate(-45deg);
}

/* Fullscreen Menu Overlay (Mobile/Tablet Only) */
.fullscreen-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--color-bg);
  z-index: 102;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
  margin-bottom: 4rem;
}

.mobile-nav .nav-link {
  font-size: 1.5rem;
  font-family: var(--font-serif);
  letter-spacing: 0.1em;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.fullscreen-menu.open .mobile-nav .nav-link {
  opacity: 0.6;
  transform: translateY(0);
}

.fullscreen-menu.open .mobile-nav .nav-link:hover {
  opacity: 1;
}

/* Delay for menu links animation */
.fullscreen-menu.open .mobile-nav .nav-link:nth-child(1) { transition-delay: 0.1s; }
.fullscreen-menu.open .mobile-nav .nav-link:nth-child(2) { transition-delay: 0.15s; }
.fullscreen-menu.open .mobile-nav .nav-link:nth-child(3) { transition-delay: 0.2s; }
.fullscreen-menu.open .mobile-nav .nav-link:nth-child(4) { transition-delay: 0.25s; }
.fullscreen-menu.open .mobile-nav .nav-link:nth-child(5) { transition-delay: 0.3s; }

.mobile-menu-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1) 0.5s, transform 0.5s cubic-bezier(0.16, 1, 0.3, 1) 0.5s;
}

.fullscreen-menu.open .mobile-menu-footer {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive adjustment for Hamburger & Layout */
@media (max-width: 900px) {
  .site-header {
    padding: 1rem 5%;
  }
}

/* Custom noise filter refinement */
.grain-overlay {
  opacity: 0.04;
}

/* Interactive Background Halo Light */
#halo-light {
  position: fixed;
  top: 0;
  left: 0;
  width: 700px;
  height: 700px;
  margin-left: -350px;
  margin-top: -350px;
  background: radial-gradient(circle, rgba(197, 168, 128, 0.14) 0%, rgba(197, 168, 128, 0.05) 45%, rgba(0, 0, 0, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  mix-blend-mode: multiply;
  opacity: 0.95;
  will-change: transform;
  transition: opacity 1.5s ease;
}

/* Dark mode fallback if preferred, but on FAF9F6 (bone white) backdrop blend is gorgeous */
html[data-theme="dark"] #halo-light {
  background: radial-gradient(circle, rgba(197, 168, 128, 0.08) 0%, rgba(0, 0, 0, 0) 70%);
  mix-blend-mode: screen;
}

/* ==========================================================================
   Theme Switch Container & Buttons
   ========================================================================== */
.theme-switch-container {
  display: flex;
  align-items: center;
}

.theme-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0.25rem;
  transition: var(--transition-quick);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  border: 1px solid transparent;
}

.theme-btn:hover {
  color: var(--color-gold);
  border-color: var(--color-border);
  background-color: rgba(18, 18, 18, 0.02);
}

html[data-theme="dark"] .theme-btn:hover {
  background-color: rgba(250, 249, 246, 0.05);
}

.theme-icon {
  transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Toggle Sun/Moon visibility depending on theme */
html[data-theme="dark"] .sun-icon {
  display: block;
}
html[data-theme="dark"] .moon-icon {
  display: none;
}
html:not([data-theme="dark"]) .sun-icon {
  display: none;
}
html:not([data-theme="dark"]) .moon-icon {
  display: block;
}

.theme-btn:hover .theme-icon {
  transform: rotate(20deg) scale(1.1);
}

#theme-toggle-btn-mobile {
  width: 44px;
  height: 44px;
}

/* ==========================================================================
   Desktop Navigation (PC: min-width 901px)
   ========================================================================== */
@media (min-width: 901px) {
  .site-header {
    pointer-events: all;
  }

  .logo-text {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.72rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text);
    font-weight: 500;
    opacity: 0.7;
    transition: opacity 0.3s ease;
  }

  .logo-text:hover {
    opacity: 1;
  }

  /* On hero, logo is white */
  .site-header:not(.scrolled) .logo-text {
    color: #FAF9F6;
  }

  .site-header:not(.scrolled) .nav-link {
    color: #FAF9F6;
  }

  .site-header:not(.scrolled) .nav-link::after {
    background-color: #FAF9F6;
  }

  .site-header:not(.scrolled) .lang-btn {
    color: rgba(250, 249, 246, 0.5);
  }

  .site-header:not(.scrolled) .lang-btn.active {
    color: var(--color-gold);
  }

  .site-header:not(.scrolled) .lang-separator {
    color: rgba(250, 249, 246, 0.2);
  }

  .site-header:not(.scrolled) .theme-btn {
    color: rgba(250, 249, 246, 0.5);
  }

  .site-header:not(.scrolled) .theme-btn:hover {
    color: var(--color-gold);
  }

  .site-nav.desktop-nav {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    pointer-events: all;
  }

  .menu-btn {
    display: none;
  }
}

/* ==========================================================================
   Journey / Timeline Section
   ========================================================================== */
.journey-section {
  border-top: 1px solid var(--color-border);
  overflow: hidden;
  padding-top: 4rem;
  padding-bottom: 3rem;
}

.journey-track {
  position: relative;
  overflow: visible;
}

.journey-line {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--color-border);
  transform: translateY(-50%);
}

.journey-items {
  display: flex;
  gap: 0;
  position: relative;
}

.journey-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 1rem;
  position: relative;
}

/* Dot on the timeline */
.journey-item::before {
  content: '';
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--color-bg);
  border: 2px solid var(--color-gold);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  transition: background-color 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.journey-item:hover::before {
  background-color: var(--color-gold);
  transform: translate(-50%, -50%) scale(1.4);
}

.journey-year {
  font-size: 1.5rem;
  font-style: italic;
  font-weight: 500;
  color: var(--color-gold);
  line-height: 1;
  padding-bottom: 3rem;
}

.journey-content {
  padding-top: 3rem;
}

.journey-label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  display: block;
}

/* Journey Scroll Hint — hidden on desktop, visible on SP */
.journey-scroll-hint {
  display: none;
}

/* SP: horizontal scroll */
@media (max-width: 900px) {
  .journey-items {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 1rem;
  }

  .journey-items::-webkit-scrollbar {
    display: none;
  }

  .journey-item {
    flex: 0 0 45%;
    scroll-snap-align: center;
    min-width: 160px;
  }

  .journey-year {
    font-size: 1.25rem;
    padding-bottom: 2.5rem;
  }

  .journey-content {
    padding-top: 2.5rem;
  }

  .journey-label {
    font-size: 0.75rem;
  }

  .journey-scroll-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    opacity: 0.45;
    transition: opacity 0.6s ease;
  }

  .journey-scroll-hint.is-hidden {
    opacity: 0;
    pointer-events: none;
  }

  .journey-scroll-hint-text {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    font-weight: 500;
  }

  .journey-scroll-hint-arrow {
    color: var(--color-text-muted);
    transform: rotate(-90deg);
    animation: hintBounce 1.5s ease-in-out infinite;
  }

  @keyframes hintBounce {
    0%, 100% { transform: rotate(-90deg) translateY(0); }
    50%      { transform: rotate(-90deg) translateY(4px); }
  }
}

/* ==========================================================================
   Scroll-Driven Animations (SP-focused, Progressive Enhancement)
   ========================================================================== */

/* Modern scroll-driven animations for supported browsers */
@supports (animation-timeline: view()) and (animation-range: entry) {

  /* Section title parallax — subtle upward drift */
  .section-title-block {
    animation: sectionTitleDrift linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 40%;
  }

  @keyframes sectionTitleDrift {
    from {
      opacity: 0;
      transform: translateY(40px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Works grid items — scale and fade on scroll */
  .works-grid-item {
    animation: worksItemReveal linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 35%;
  }

  @keyframes worksItemReveal {
    from {
      opacity: 0;
      transform: scale(0.92) translateY(20px);
    }
    to {
      opacity: 1;
      transform: scale(1) translateY(0);
    }
  }

  /* Skill rows — slide in from left/right alternating */
  .skill-row {
    animation: skillSlideIn linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 30%;
  }

  @keyframes skillSlideIn {
    from {
      opacity: 0;
      transform: translateX(-20px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }

  .skill-row:nth-child(even) {
    animation-name: skillSlideInRight;
  }

  @keyframes skillSlideInRight {
    from {
      opacity: 0;
      transform: translateX(20px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }

  /* Journey items — staggered entrance */
  .journey-item {
    animation: journeyFadeIn linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 50%;
  }

  @keyframes journeyFadeIn {
    from {
      opacity: 0;
      transform: translateY(24px) scale(0.95);
    }
    to {
      opacity: 1;
      transform: translateY(0) scale(1);
    }
  }

  /* Role accordion items */
  .role-accordion-item {
    animation: roleSlideUp linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 30%;
  }

  @keyframes roleSlideUp {
    from {
      opacity: 0;
      transform: translateY(16px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

/* Reduced motion — respect user preferences */
@media (prefers-reduced-motion: reduce) {
  .section-title-block,
  .works-grid-item,
  .skill-row,
  .journey-item,
  .role-accordion-item,
  .reveal-element,
  .reveal-group .reveal-item {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }
}