/* ==========================================================================
   Web Design LP - Organic Natural Beige & Full-Page Curve Transitions
   Vertical Typography & Asymmetric Layout Shift Architecture
   ========================================================================== */

:root {
  --bg-paper: #ffffff;
  --bg-sand-light: #ffffff;
  --bg-sand-warm: #f2f2f4;
  --bg-sand-deep: #dedee3;
  --bg-charcoal: #1f2024;
  --bg-jet-black: #101114;
  
  --text-primary: #111111;
  --text-secondary: #333336;
  --text-muted: #666669;
  
  --accent-lavender: #7c6bb5;
  --accent-lavender-light: #b4a5ec;
  --accent-lavender-pale: #ede9fe;
  --accent-lavender-dark: #63529d;
  
  --border-soft: rgba(17, 17, 17, 0.1);
  --border-lavender: rgba(124, 107, 181, 0.35);
  
  --font-display: 'Bodoni Moda', serif;
  --font-serif: 'Playfair Display', 'Noto Serif JP', serif;
  --font-sans: 'Outfit', 'Noto Sans JP', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: var(--bg-paper);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

/* Headings default to Playfair Display / Mincho for high legibility */
h1, h2, h3 {
  font-family: var(--font-serif);
}

/* =========================================================================
   FOREGROUND MAIN COPY & ASYMMETRIC BALANCE (手前にドカン・雑誌の表紙の緊張感)
   ========================================================================= */
.hero-main-statement {
  position: relative;
  z-index: 10;
  width: 100%;
  pointer-events: none;
  user-select: none;
}

.hero-en-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6.0vw, 6.6rem);
  font-weight: 800;
  line-height: 0.96;
  letter-spacing: -0.02em;
  color: #111111;
  text-transform: uppercase;
  text-shadow: 0 4px 40px rgba(255, 255, 255, 0.9);
  transition: transform 0.6s ease;
}

/* アンパサンドの優美なラベンダー・イタリック装飾 */
.hero-ampersand {
  font-family: 'Playfair Display', 'Bodoni Moda', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--accent-lavender);
  margin: 0 0.08em;
  display: inline-block;
  transform: scale(0.92);
  text-shadow: 0 0 25px rgba(124, 107, 181, 0.3);
}

/* ソリッドベタ（グラデーション全廃・活版印刷の力強いベタ墨） */
.hero-en-title-accent {
  color: #1c1d1a;
  display: inline-block;
}

@media (max-width: 768px) {
  .hero-en-title {
    font-size: clamp(1.85rem, 8.0vw, 2.85rem);
    line-height: 1.02;
    letter-spacing: -0.01em;
  }
}

/* =========================================================================
   MONOTONE CRAFT HAND (画面右半分を大胆に掌握・圧倒的スケール)
   ========================================================================= */
.hero-hand-container {
  position: absolute;
  inset: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 2; /* 手は背景と前景テキストの中間レイヤー */
  overflow: hidden;
}

.hand-mono-item {
  position: absolute;
  left: 70%;
  bottom: -4vh;
  transform: translateX(-50%) rotate(2.5deg) scale(1.22);
  height: 98vh;
  max-height: 1080px;
  width: auto;
  transform-origin: bottom center;
  mix-blend-mode: multiply;
  opacity: 0.88;
  filter: grayscale(100%) contrast(114%) brightness(98%);
  will-change: transform;
  animation: monoHandBreatheAsym 14s ease-in-out infinite;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.hand-mono-item img {
  height: 100%;
  width: auto;
  max-width: 68vw;
  object-fit: contain;
  object-position: bottom center;
}

@keyframes monoHandBreatheAsym {
  0%, 100% { transform: translateX(-50%) translateY(0) rotate(2.5deg) scale(1.22); }
  50% { transform: translateX(-50%) translateY(-22px) rotate(3.5deg) scale(1.25); }
}

@media (max-width: 1024px) {
  .hand-mono-item {
    left: 54%;
    height: 84vh;
  }
}

@media (max-width: 768px) {
  .hand-mono-item {
    left: 50%;
    height: 68vh;
    bottom: -6vh;
    opacity: 0.40;
    transform: translateX(-50%) rotate(0deg) scale(1.05);
  }
  .hand-mono-item img {
    max-width: 92vw;
  }
  @keyframes monoHandBreatheAsym {
    0%, 100% { transform: translateX(-50%) translateY(0) scale(1.05); }
    50% { transform: translateX(-50%) translateY(-14px) scale(1.08); }
  }
}

/* =========================================================================
   VERTICAL TYPOGRAPHY & EDITORIAL ASYMMETRY
   ========================================================================= */
.vertical-text {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.22em;
  line-height: 1.85;
}

/* Layout Shift Offset Helpers */
.shift-up-1 {
  transform: translateY(-24px);
}
.shift-down-1 {
  transform: translateY(24px);
}
.shift-up-2 {
  transform: translateY(-40px);
}
.shift-down-2 {
  transform: translateY(40px);
}

@media (max-width: 768px) {
  .shift-up-1, .shift-down-1, .shift-up-2, .shift-down-2 {
    transform: none !important;
  }
  .vertical-text-mobile-horizontal {
    writing-mode: horizontal-tb !important;
    letter-spacing: 0.05em !important;
  }
}

/* Full-Page Section Container System */
#fp-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  z-index: 10;
}

.fp-section {
  position: absolute;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding: 5.5rem 2rem 4rem;
  box-sizing: border-box;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.5s ease;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

#section-01 {
  padding: 5.75rem 2.25rem 2.5rem 2.25rem !important;
}

#section-01 .hero-editorial-wrap {
  width: 100%;
  height: 100%;
  max-width: 1380px;
  margin: 0 auto;
  padding: 0 !important;
}

@media (min-width: 768px) {
  #section-01 {
    padding: 6.5rem 5vw 4.5rem 5vw !important;
  }
}

@media (max-width: 768px) {
  .lang-switch-clean {
    display: none !important;
  }
}

@media (min-width: 768px) {
  .fp-section {
    padding: 6rem 5vw 5rem;
    overflow-y: auto;
  }
}

/* Elegant Minimalist Scrollbar */
.fp-section::-webkit-scrollbar {
  width: 6px;
}
.fp-section::-webkit-scrollbar-track {
  background: transparent;
}
.fp-section::-webkit-scrollbar-thumb {
  background: rgba(201, 171, 109, 0.35);
  border-radius: 3px;
}
.fp-section::-webkit-scrollbar-thumb:hover {
  background: rgba(143, 110, 43, 0.6);
}

.fp-section.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 12;
}

/* Section Background Themes (Grayscale Gradation) */
.tone-01 {
  background-color: #ffffff;
  color: #111111;
}
.tone-02 {
  background-color: #f2f2f4;
  color: #111111;
}
.tone-03 {
  background-color: #dedee3;
  color: #111111;
}
.tone-04 {
  background-color: #1f2024;
  color: #f5f5f7;
}
.tone-05 {
  background-color: #101114;
  color: #f5f5f7;
}

/* Dark Sections (Section 4 & 5) High-Contrast Typography & Lavender Accents */
.tone-04 h2, .tone-04 h3,
.tone-05 h2, .tone-05 h3 {
  color: #ffffff !important;
}

.tone-04 p,
.tone-05 p {
  color: #cfd0d6 !important;
}

.tone-04 .font-mono,
.tone-05 .font-mono {
  color: var(--accent-lavender-light) !important;
}

.tone-04 .editorial-rule-t,
.tone-04 .border-b,
.tone-05 .border-y {
  border-color: rgba(255, 255, 255, 0.12) !important;
}

.tone-04 .editorial-door-kato {
  border-top: 2px solid var(--accent-lavender-light) !important;
}

.tone-04 .editorial-door-kamos {
  border-top: 2px solid var(--accent-lavender) !important;
}

.tone-04 .door-label-kato {
  color: var(--accent-lavender-light) !important;
}

.tone-04 .door-label-kamos {
  color: #c4b5fd !important;
}

/* Direct Section Undulating Wave Transition */
.fp-section.waving-in {
  opacity: 1 !important;
  visibility: visible !important;
  z-index: 25 !important;
  clip-path: url(#wave-clip);
  -webkit-clip-path: url(#wave-clip);
  pointer-events: none;
  transition: none !important;
}

/* Editorial Hairlines & Cardless Layout Rules */
.editorial-rule-t {
  border-top: 1px solid rgba(17, 17, 17, 0.1);
  padding-top: 1.5rem;
  transition: border-color 0.3s ease;
}

.editorial-rule-t:hover {
  border-top-color: var(--accent-lavender);
}

.editorial-door-kato {
  border-top: 2px solid var(--accent-lavender);
  padding-top: 2rem;
}

.editorial-door-kamos {
  border-top: 2px solid #9b87f5;
  padding-top: 2rem;
}

/* Buttons - Lavender Accent & Editorial Minimalism */
.btn-primary-brass {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.85rem;
  border-radius: 999px;
  background: var(--accent-lavender);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.92rem;
  text-decoration: none;
  box-shadow: 0 4px 18px rgba(124, 107, 181, 0.35);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary-brass:hover {
  background: var(--accent-lavender-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(124, 107, 181, 0.45);
}

.btn-secondary-sand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.85rem;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid rgba(17, 17, 17, 0.18);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-secondary-sand:hover {
  border-color: var(--accent-lavender);
  color: var(--accent-lavender);
  background: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
}

/* Dark Sections Button Variants */
.tone-04 .btn-secondary-sand,
.tone-05 .btn-secondary-sand {
  background: transparent !important;
  color: #ffffff !important;
  border-color: rgba(255, 255, 255, 0.3) !important;
}

.tone-04 .btn-secondary-sand:hover,
.tone-05 .btn-secondary-sand:hover {
  border-color: var(--accent-lavender-light) !important;
  color: var(--accent-lavender-light) !important;
  background: rgba(255, 255, 255, 0.08) !important;
}

/* Minimalist Floating Navigation Indicator (Dots) */
.section-nav-dots {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 30;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dot-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(17, 17, 17, 0.25);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.dot-indicator.active {
  background: var(--accent-lavender);
  transform: scale(1.6);
  box-shadow: 0 0 10px rgba(124, 107, 181, 0.6);
}

/* Navigation dots on dark sections */
.section-nav-dots.on-dark .dot-indicator {
  background: rgba(255, 255, 255, 0.35);
}

.section-nav-dots.on-dark .dot-indicator.active {
  background: var(--accent-lavender-light);
  box-shadow: 0 0 12px rgba(180, 165, 236, 0.8);
}

/* Ensure global nav container empty margins do not block pointer events */
.knav-container {
  pointer-events: none;
}
.knav-container .knav-bar,
.knav-container .knav-dropdown,
.knav-container .knav-mobile-menu-btn,
.knav-container a,
.knav-container button {
  pointer-events: auto;
}

/* Floating Language Switcher */
.lang-switch-clean {
  position: fixed;
  top: 88px;
  right: 24px;
  z-index: 10005; /* High z-index above nav container */
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(124, 107, 181, 0.35);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-lavender);
  text-decoration: none;
  transition: all 0.2s ease;
}

.lang-switch-clean:hover {
  background: #ffffff;
  border-color: var(--accent-lavender);
  transform: translateY(-1px);
}

.lang-switch-clean.on-dark {
  background: rgba(20, 20, 24, 0.85);
  border-color: rgba(180, 165, 236, 0.35);
  color: var(--accent-lavender-light);
}

@media (max-width: 768px) {
  .section-nav-dots {
    display: none;
  }
}