/* ==========================================================================
   DESIGN SYSTEM & VARIABLES (ひまわり / SUNFLOWER SMART EDITORIAL THEME)
   ========================================================================== */
:root {
  /* Color Palette - Sunflower (ひまわり) Inspired */
  --bg-main: #fffdf9;          /* Soft, warm sunny ivory */
  --bg-section: #ffffff;       /* Pure clean white */
  --bg-card: #ffffff;
  --border: rgba(51, 42, 34, 0.08);        /* Super thin warm gray border */
  --border-hover: #ea580c;                 /* Orange highlighting border */
  
  --primary: #d97706;          /* Golden Sunflower Amber */
  --primary-rgb: 217, 119, 6;
  --secondary: #ea580c;        /* Warm Sunflower Orange */
  --secondary-rgb: 234, 88, 12;
  
  /* Stem / Leaf Green Accent Color */
  --accent: #16a34a;           /* Fresh Stem Leaf Green */
  --accent-rgb: 22, 163, 74;
  --accent-hover: #15803d;
  
  /* Text Colors (Warm mocha brown for gentle readability and high contrast) */
  --text-main: #27211c;        /* Dark Warm Mocha Brown */
  --text-muted: #7c7267;       /* Soft Sand Gray-Brown */
  --text-light: #ffffff;
  
  /* Gradients */
  --grad-primary: linear-gradient(135deg, #fbbf24 0%, var(--secondary) 100%);
  --grad-primary-hover: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --grad-card: linear-gradient(135deg, #ffffff 0%, #fffbf2 100%);
  
  /* Fonts */
  --font-family: 'Plus Jakarta Sans', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  /* Layout & Corners (Sharp & Smart) */
  --header-height: 80px;
  --container-max-width: 1100px;
  --border-radius-sm: 4px;     /* Sharpened from 8px for architectural feel */
  --border-radius-md: 6px;     /* Sharpened from 16px */
  --border-radius-lg: 8px;     /* Sharpened from 24px */
  
  /* Minimalist Shadows */
  --shadow-sm: 0 2px 8px rgba(51, 42, 34, 0.03);
  --shadow-md: 0 10px 30px rgba(51, 42, 34, 0.04);
  --shadow-lg: 0 20px 40px rgba(51, 42, 34, 0.06);
  
  --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.25s ease;
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.625;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

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

input, textarea, button {
  font-family: inherit;
  color: inherit;
  background: none;
  border: none;
}

ul {
  list-style: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
  background: rgba(217, 119, 6, 0.25);
  border-radius: var(--border-radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--grad-primary);
}

/* ==========================================================================
   LAYOUT UTILITIES
   ========================================================================== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
}

.section-padding {
  padding: 120px 0;
}

/* Editorial Style Left-Aligned Header */
.section-header {
  text-align: left;
  margin-bottom: 70px;
  position: relative;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}

.section-header-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.section-num {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--secondary);
  letter-spacing: 0.05em;
}

.section-subtitle {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

/* Gradient Text & Highlights */
.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.highlight-green {
  color: var(--accent);
  font-weight: 600;
}

/* ==========================================================================
   AMBIENT DECORATION (ひまわり・ライトスタイル)
   ========================================================================== */
.sunflower-bg-light {
  position: absolute;
  top: 0;
  right: 0;
  width: 50vw;
  height: 70vh;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.05) 0%, rgba(234, 88, 12, 0.015) 60%, rgba(255, 255, 255, 0) 100%);
  z-index: -2;
  pointer-events: none;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 0.88rem;
  font-weight: 700;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: var(--transition-smooth);
  position: relative;
}

.btn-primary {
  background: var(--text-main);
  color: var(--bg-main);
  box-shadow: 0 4px 12px rgba(39, 33, 28, 0.08);
}

.btn-primary:hover {
  background: var(--secondary);
  color: var(--text-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(234, 88, 12, 0.2);
}

.btn-secondary {
  border: 1px solid var(--text-main);
  color: var(--text-main);
  background-color: transparent;
}

.btn-secondary:hover {
  background-color: rgba(39, 33, 28, 0.04);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.8rem;
}

.btn-block {
  width: 100%;
  display: flex;
}

/* ==========================================================================
   HEADER & NAVIGATION (Minimal Sticky)
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background-color: rgba(255, 253, 249, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(51, 42, 34, 0.04);
  transition: var(--transition-smooth);
}

.site-header.scrolled {
  height: 70px;
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 15px rgba(51, 42, 34, 0.02);
}

.header-container {
  max-width: var(--container-max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-main);
}

.logo-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--text-main);
  background-color: #ffffff;
  transition: var(--transition-fast);
}

.logo:hover .logo-icon {
  transform: scale(1.08) rotate(8deg);
  border-color: var(--secondary);
}

.logo-dot {
  color: var(--secondary);
}

.logo-sub {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 2px;
  letter-spacing: 0.05em;
}

.desktop-nav ul {
  display: flex;
  gap: 40px;
  align-items: center;
}

.nav-link {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  position: relative;
  padding: 8px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--text-main);
  transition: var(--transition-smooth);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}

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

/* Highlight Link in Nav */
.nav-link.highlight {
  color: var(--text-main);
  font-weight: 700;
  border: 1px solid var(--text-main);
  padding: 6px 18px;
  border-radius: var(--border-radius-sm);
  background-color: transparent;
  transition: var(--transition-fast);
}

.nav-link.highlight::after {
  display: none;
}

.nav-link.highlight:hover {
  background-color: var(--text-main);
  color: var(--bg-main);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

/* Mobile Toggle */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 20px;
  height: 14px;
  cursor: pointer;
  z-index: 1100;
}

.hamburger-line {
  width: 100%;
  height: 1.5px;
  background-color: var(--text-main);
  transition: var(--transition-smooth);
  transform-origin: left center;
}

/* Active State Hamburger */
.mobile-nav-toggle.open .hamburger-line:nth-child(1) {
  transform: rotate(45deg);
}
.mobile-nav-toggle.open .hamburger-line:nth-child(2) {
  opacity: 0;
}
.mobile-nav-toggle.open .hamburger-line:nth-child(3) {
  transform: rotate(-45deg);
}

/* Mobile Overlay */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background-color: rgba(255, 253, 249, 0.98);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.mobile-menu-overlay.open {
  right: 0;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
}

.mobile-nav-link {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-muted);
}

.mobile-nav-link:hover, .mobile-nav-link.active {
  color: var(--text-main);
}

.mobile-nav-link.highlight {
  color: var(--text-main);
  border: 1.5px solid var(--text-main);
  padding: 10px 30px;
  border-radius: var(--border-radius-sm);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 100px; /* Safe space for scroll indicator */
  position: relative;
  background-color: var(--bg-main);
}

.hero-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--border-radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--secondary);
  margin-bottom: 24px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  box-shadow: var(--shadow-sm);
}

.badge-dot {
  width: 5px;
  height: 5px;
  background-color: var(--accent);
  border-radius: 50%;
}

.hero-title {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.hero-subtitle {
  font-size: 1.02rem;
  color: var(--text-muted);
  max-width: 540px;
  margin-bottom: 40px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

/* Hero Visual: Architectural Card Slider (Carousel with 3 demos) */
.hero-visual {
  display: flex;
  justify-content: center;
}

.featured-card-wrapper {
  position: relative;
  width: 100%;
  max-width: 380px;
  aspect-ratio: 4/5;
  margin-bottom: 30px;
}

.featured-slider {
  position: relative;
  width: 100%;
  height: 100%;
  z-index: 2;
}

.featured-card {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background: #ffffff;
  border: 1px solid var(--text-main);
  border-radius: var(--border-radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-lg);
  background-image: var(--grad-card);
  opacity: 0;
  transform: scale(0.96) translateY(10px);
  pointer-events: none;
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.featured-card.active {
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: all;
  z-index: 5;
}

.featured-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.featured-num {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.featured-status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  transition: var(--transition-fast);
}

.dot-apparel {
  background-color: var(--secondary, #ea580c);
  box-shadow: 0 0 8px rgba(234, 88, 12, 0.4);
}

.dot-salon {
  background-color: #d4af37;
  box-shadow: 0 0 8px rgba(212, 175, 55, 0.5);
}

.dot-nextbridge {
  background-color: #00ced1;
  box-shadow: 0 0 8px rgba(0, 206, 209, 0.5);
}

.featured-body {
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.featured-work-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--text-main);
  margin-bottom: 4px;
}

.featured-work-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.featured-graphic {
  width: 100%;
  aspect-ratio: 16/10;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 2px 6px rgba(0,0,0,0.03);
}

.graphic-apparel {
  background: linear-gradient(135deg, #fef6e0 0%, #fef0db 100%);
  border: 1px solid rgba(51, 42, 34, 0.08);
}

.graphic-salon {
  background: linear-gradient(135deg, #1c1c1c 0%, #0d0d0d 100%);
  border: 1px solid rgba(212, 175, 55, 0.3);
}

.graphic-nextbridge {
  background: linear-gradient(135deg, #0a192f 0%, #112240 100%);
  border: 1px solid rgba(0, 206, 209, 0.3);
}

.featured-text-mock {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.6em;
  opacity: 0.9;
  padding-left: 0.6em;
}

.text-apparel {
  color: var(--secondary, #ea580c);
}

.text-salon {
  color: #d4af37;
  font-family: 'Playfair Display', serif;
}

.text-nextbridge {
  color: #00ced1;
  font-family: 'Outfit', sans-serif;
}

.featured-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.featured-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  align-items: center;
}

.featured-tag {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-main);
  border: 1px solid var(--text-main);
  padding: 2px 8px;
  border-radius: 50px;
}

.featured-demo-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-main);
  background: #ffffff;
  border: 1px solid var(--text-main);
  padding: 4px 10px;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  white-space: nowrap;
}

.featured-demo-btn:hover {
  background: var(--text-main);
  color: #ffffff;
  transform: translateY(-1px);
}

/* Slider Controls (Arrows & Dots) */
.featured-controls {
  position: absolute;
  bottom: -46px;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 10;
}

.slider-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--text-main);
  background: #ffffff;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
  padding: 0;
}

.slider-btn:hover {
  background: var(--text-main);
  color: #ffffff;
  transform: scale(1.08);
}

.slider-dots {
  display: flex;
  gap: 8px;
  align-items: center;
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(39, 33, 28, 0.2);
  border: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  padding: 0;
}

.slider-dot:hover {
  background: rgba(39, 33, 28, 0.4);
}

.slider-dot.active {
  width: 24px;
  border-radius: 10px;
  background: var(--secondary, #ea580c);
}

/* Offset structural shadow card */
.featured-card-shadow {
  position: absolute;
  inset: 0;
  border: 1px solid var(--text-main);
  border-radius: var(--border-radius-md);
  transform: translate(14px, 14px);
  z-index: 1;
  pointer-events: none;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0.7;
}

.mouse-icon {
  width: 20px;
  height: 34px;
  border: 1.5px solid var(--text-muted);
  border-radius: 20px;
  position: relative;
}

.wheel {
  width: 3px;
  height: 6px;
  background-color: var(--text-main);
  border-radius: 1.5px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll-wheel 1.6s infinite ease-in-out;
}

@keyframes scroll-wheel {
  0% { top: 6px; opacity: 1; }
  50% { top: 16px; opacity: 0; }
  100% { top: 6px; opacity: 0; }
}

.scroll-text {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  font-weight: 700;
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.about-section {
  background-color: var(--bg-section);
  border-bottom: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 60px;
  align-items: center;
}

.about-photo-frame {
  position: relative;
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
  border-radius: var(--border-radius-md);
  aspect-ratio: 1;
  background-color: var(--bg-main);
}

.about-photo-frame::after {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--text-main);
  z-index: 1;
  pointer-events: none;
}

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: var(--border-radius-md);
  filter: grayscale(10%) contrast(105%);
}

.about-name {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.about-jp-name {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 400;
}

.about-lead {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--primary);
}

.about-description p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 0.95rem;
  line-height: 1.75;
}

.about-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 30px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.info-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.info-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
}

/* ==========================================================================
   SKILLS SECTION
   ========================================================================== */
.skills-section {
  background-color: var(--bg-main);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-md);
  padding: 32px;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-sm);
}

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

.skill-icon-wrapper {
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-sm);
  background: var(--bg-main);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  color: var(--text-main);
  transition: var(--transition-fast);
}

.skill-card:hover .skill-icon-wrapper {
  color: var(--secondary);
  border-color: var(--secondary);
}

.skill-icon {
  width: 22px;
  height: 22px;
}

.skill-name {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.skill-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.skill-tag {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-sm);
  color: var(--text-muted);
}

.skill-card:hover .skill-tag {
  border-color: rgba(51, 42, 34, 0.15);
  color: var(--text-main);
}

/* ==========================================================================
   WORKS SECTION (Editorial Cards - Smart & Cool)
   ========================================================================== */
.works-section {
  background-color: var(--bg-section);
  border-bottom: 1px solid var(--border);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
}

.work-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

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

.work-img-wrapper {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: #fbf9f6;
  border-bottom: 1px solid var(--border);
}

/* Editorial Graphic Placeholders (No gaming/toy layout) */
.work-demo-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 30px;
  transition: var(--transition-smooth);
}

.demo-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  margin-bottom: 4px;
}

.demo-subtitle {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.demo-btn {
  margin-top: 24px;
  padding: 4px 14px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}

/* Color palettes based on sunflower identity */
.apparel-demo {
  background: #fff5f5;
  color: #991b1b;
}
.apparel-demo .demo-btn {
  border: 1px solid #991b1b;
}
.apparel-demo:hover .demo-btn {
  background: #991b1b;
  color: #fffdf5;
}

.salon-demo {
  background: #faf5f0;
  color: #8c6d58;
}
.salon-demo .demo-btn {
  border: 1px solid #8c6d58;
}
.salon-demo:hover .demo-btn {
  background: #8c6d58;
  color: #fffdf5;
}

.nextbridge-demo {
  background: #f0f7ff;
  color: #1e3a8a;
}
.nextbridge-demo .demo-btn {
  border: 1px solid #1e3a8a;
}
.nextbridge-demo:hover .demo-btn {
  background: #1e3a8a;
  color: #fffdf5;
}

.work-card:hover .work-demo-placeholder {
  transform: scale(1.03);
}

.work-hover-overlay {
  position: absolute;
  inset: 0;
  background: rgba(39, 33, 28, 0.02);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-smooth);
  z-index: 2;
}

.work-card:hover .work-hover-overlay {
  opacity: 1;
}

.work-content {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.work-category {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.work-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.4;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.work-description {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 24px;
  flex-grow: 1;
}

.work-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.work-tech span {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: var(--border-radius-sm);
}

/* ==========================================================================
   APPEAL SECTION
   ========================================================================== */
.appeal-section {
  background-color: var(--bg-main);
}

.appeal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.appeal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-md);
  padding: 40px 32px;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-sm);
}

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

.appeal-icon-circle {
  width: 50px;
  height: 50px;
  border-radius: var(--border-radius-sm);
  background: var(--bg-main);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  color: var(--text-main);
  transition: var(--transition-fast);
}

.appeal-card:hover .appeal-icon-circle {
  color: var(--secondary);
  border-color: var(--secondary);
  background: rgba(234, 88, 12, 0.03);
}

.appeal-icon {
  width: 24px;
  height: 24px;
}

.appeal-card-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.4;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

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

/* ==========================================================================
   CONTACT SECTION (Smart & Minimalist Inputs)
   ========================================================================== */
.contact-section {
  background-color: var(--bg-section);
  border-top: 1px solid var(--border);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 60px;
  align-items: start;
}

.contact-info-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.contact-info-text {
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 40px;
  font-size: 0.92rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.9rem;
  color: var(--text-main);
  font-weight: 600;
}

.detail-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-sm);
  background: var(--bg-main);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

/* Clean Form Layout */
.contact-form-container {
  background: var(--bg-card);
  border: 1px solid var(--text-main);
  border-radius: var(--border-radius-md);
  padding: 48px;
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 30px;
  position: relative;
}

.form-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-main);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Underline style inputs - very elegant & cool */
.form-input, .form-textarea {
  width: 100%;
  background-color: transparent;
  border-top: none;
  border-left: none;
  border-right: none;
  border-bottom: 1.5px solid rgba(51, 42, 34, 0.15);
  border-radius: 0;
  padding: 10px 0;
  font-size: 0.95rem;
  color: var(--text-main);
  transition: var(--transition-fast);
}

.form-input::placeholder, .form-textarea::placeholder {
  color: rgba(124, 114, 103, 0.4);
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-bottom-color: var(--secondary);
}

/* Error States */
.form-input.invalid, .form-textarea.invalid {
  border-bottom-color: #ef4444;
}

.error-message {
  display: none;
  color: #ef4444;
  font-size: 0.75rem;
  margin-top: 6px;
  font-weight: 600;
}

.error-message.show {
  display: block;
}

/* Send Button Loader */
.loader {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid var(--text-light);
  border-bottom-color: transparent;
  border-radius: 50%;
  animation: rotation 0.8s linear infinite;
  margin-left: 8px;
}

@keyframes rotation {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

#submitBtn.loading .loader {
  display: inline-block;
}
#submitBtn.loading span {
  display: none;
}

/* Feedback Styling */
.form-feedback {
  margin-top: 20px;
  padding: 12px;
  border-radius: var(--border-radius-sm);
  font-size: 0.88rem;
  font-weight: 700;
  text-align: center;
  display: none;
  border: 1px solid transparent;
}

.form-feedback.success {
  display: block;
  background-color: rgba(22, 163, 74, 0.05);
  border-color: rgba(22, 163, 74, 0.15);
  color: var(--accent-hover);
}

.form-feedback.error {
  display: block;
  background-color: rgba(239, 68, 68, 0.05);
  border-color: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

/* ==========================================================================
   FOOTER SECTION
   ========================================================================== */
.site-footer {
  background-color: #faf9f6;
  border-top: 1px solid var(--border);
  padding: 60px 0;
  color: var(--text-muted);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px;
}

.footer-logo {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
  display: inline-block;
}

.footer-tagline {
  font-size: 0.8rem;
}

.footer-links {
  display: flex;
  gap: 28px;
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 0.8rem;
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--text-main);
}

.copyright {
  font-size: 0.75rem;
  text-align: right;
}

/* ==========================================================================
   ANIMATION & INTERSECTION OBSERVER STYLES
   ========================================================================== */
.reveal {
  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);
}

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

/* Delay reveals */
.skills-grid > .reveal:nth-child(1) { transition-delay: 0.05s; }
.skills-grid > .reveal:nth-child(2) { transition-delay: 0.1s; }
.skills-grid > .reveal:nth-child(3) { transition-delay: 0.15s; }
.skills-grid > .reveal:nth-child(4) { transition-delay: 0.2s; }

.works-grid > .reveal:nth-child(1) { transition-delay: 0.1s; }
.works-grid > .reveal:nth-child(2) { transition-delay: 0.2s; }
.works-grid > .reveal:nth-child(3) { transition-delay: 0.3s; }

.appeal-grid > .reveal:nth-child(1) { transition-delay: 0.05s; }
.appeal-grid > .reveal:nth-child(2) { transition-delay: 0.1s; }
.appeal-grid > .reveal:nth-child(3) { transition-delay: 0.15s; }

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */

/* Tablets / Large Mobile (max-width: 992px) */
@media (max-width: 992px) {
  .hero-section {
    min-height: auto;
    padding-top: calc(var(--header-height) + 30px);
    padding-bottom: 70px;
  }

  /* Hide mouse scroll indicator on tablets/mobiles to prevent overlapping with text/cards */
  .scroll-indicator {
    display: none !important;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  
  .hero-content {
    align-items: center;
    text-align: center;
  }
  
  .hero-title {
    text-align: center;
  }
  
  .hero-badge {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-visual {
    order: -1; /* Place demo card on top on smaller screens */
  }

  .featured-card-wrapper {
    margin-bottom: 48px;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .about-photo-frame {
    max-width: 260px;
  }
  
  .about-info-grid {
    justify-content: center;
  }
  
  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* Small Screens (max-width: 768px) */
@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }
  
  .section-padding {
    padding: 80px 0;
  }
  
  .section-title {
    font-size: 1.7rem;
  }
  
  .hero-title {
    font-size: 2.3rem;
  }
  
  /* Navigation Menu */
  .desktop-nav {
    display: none;
  }
  
  .mobile-nav-toggle {
    display: flex;
  }
  
  /* Adjust layout padding slightly */
  .contact-form-container {
    padding: 32px 24px;
  }
  
  .footer-container {
    flex-direction: column;
    text-align: center;
  }
  
  .copyright {
    text-align: center;
  }
}

/* Tiny Mobile (max-width: 480px) */
@media (max-width: 480px) {
  .hero-title {
    font-size: 1.95rem;
  }

  .featured-card-wrapper {
    max-width: 320px;
  }

  .featured-card {
    padding: 18px;
  }

  .featured-work-title {
    font-size: 1.45rem;
  }

  .featured-work-subtitle {
    font-size: 0.75rem;
    margin-bottom: 16px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
  }
}

/* ==========================================================================
   OPENING SPLASH SCREEN (サイト起動時の名前表示アニメーション)
   ========================================================================== */
.opening-splash {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--bg-main, #fffdf9);
  z-index: 999999;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1), opacity 0.8s ease;
  pointer-events: all;
}

.opening-splash.loaded {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1), opacity 0.8s ease, visibility 0s 0.8s;
}

.opening-bg-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.18) 0%, rgba(234, 88, 12, 0.05) 50%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  animation: splashGlowPulse 2s ease-in-out infinite alternate;
}

@keyframes splashGlowPulse {
  0% { transform: scale(0.9); opacity: 0.7; }
  100% { transform: scale(1.15); opacity: 1; }
}

.opening-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  z-index: 2;
  padding: 20px;
}

.opening-avatar-box {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  padding: 3px;
  border: 2px solid var(--text-main);
  background: #ffffff;
  box-shadow: 0 10px 25px rgba(51, 42, 34, 0.1);
  margin-bottom: 24px;
  opacity: 0;
  transform: scale(0.6);
  animation: splashAvatarIn 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) 0.1s forwards;
}

.opening-avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

@keyframes splashAvatarIn {
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.opening-titles {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.opening-name {
  font-family: 'Noto Sans JP', 'Plus Jakarta Sans', sans-serif;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: 0.18em;
  color: var(--text-main);
  margin: 0;
  padding-left: 0.18em; /* balance letter-spacing */
  opacity: 0;
  transform: translateY(20px);
  animation: splashNameIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.25s forwards;
}

@keyframes splashNameIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.opening-sub {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  color: var(--secondary, #ea580c);
  margin: 0;
  padding-left: 0.25em;
  opacity: 0;
  transform: translateY(15px);
  animation: splashSubIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.4s forwards;
}

@keyframes splashSubIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.opening-dot {
  color: var(--primary, #d97706);
  font-weight: 400;
}

.opening-line {
  width: 0;
  height: 2px;
  background: var(--grad-primary, linear-gradient(135deg, #fbbf24 0%, #ea580c 100%));
  margin-top: 24px;
  border-radius: 2px;
  animation: splashLineExpand 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.5s forwards;
}

@keyframes splashLineExpand {
  to {
    width: 140px;
  }
}