/* ============================================================
   style.css — Mitsuru Tanaka Portfolio
   Fonts: Cormorant Garamond (display) + Jost (body)
   Design: Editorial minimalism — white/charcoal + generous space
   ============================================================ */

/* ============================================================
   1. CSS Custom Properties
   ============================================================ */
:root {
  /* Colors — Light */
  --c-bg:          #edeae5;
  --c-surface:     #f5f2ed;
  --c-text:        #1c1a17;
  --c-text-muted:  #74726d;
  --c-text-faint:  #c0bdb6;
  --c-border:      #dedad4;
  --c-accent:      #1c1a17;
  --c-tag-bg:      #e4e0da;

  /* Overlay — light bg, dark text (inverted) */
  --c-overlay-bg:   rgba(14, 14, 14, 0.97);
  --c-overlay-text: #f0efeb;

  /* Hero panel */
  --c-hero-bg:          #0a0a0a;
  --c-vignette-h:       rgba(0, 0, 0, 0.25);
  --c-vignette-v:       rgba(0, 0, 0, 0.10);

  /* Link card hover — muted sub text on filled bg */
  --c-link-hover-sub:   rgba(245, 244, 241, 0.55);

  /* QR Modal — always-light card regardless of theme */
  --c-modal-bg:         #ffffff;
  --c-modal-text:       #333333;
  --c-modal-muted:      #666666;
  --c-modal-faint:      #aaaaaa;
  --c-modal-hover-bg:   #f2f2f2;
  --c-modal-overlay-bg: rgba(0, 0, 0, 0.42);
  --c-modal-shadow:     0 24px 64px rgba(0, 0, 0, 0.18), 0 4px 16px rgba(0, 0, 0, 0.08);

  /* Typography */
  --f-display: 'Cormorant Garamond', Georgia, serif;
  --f-body:    'Jost', 'Helvetica Neue', sans-serif;

  /* Layout */
  --panel-w: 440px;
  --header-h: 96px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 0.2s;
  --dur-base: 0.35s;
  --dur-slow: 0.55s;
}

/* Dark Theme Overrides */
[data-theme="dark"] {
  --c-bg:         #242323;
  --c-surface:    #272727;
  --c-text:       #e8e6e0;
  --c-text-muted: #a09e9a;
  --c-text-faint: #6a6864;
  --c-border:     #343434;
  --c-accent:     #e8e6e0;
  --c-tag-bg:     #2c2c2c;

  --c-overlay-bg:   rgba(238, 236, 228, 0.97);
  --c-overlay-text: #111111;

  /* Link card hover — dark bg variant */
  --c-link-hover-sub: rgba(18, 18, 18, 0.55);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--f-body);
  font-weight: 400;
  background-color: var(--c-bg);
  color: var(--c-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden; /* Left panel handles its own scroll */
  transition:
    background-color var(--dur-base) var(--ease-in-out),
    color          var(--dur-base) var(--ease-in-out);
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  -webkit-appearance: none;
}

ul {
  list-style: none;
}

/* ============================================================
   3. Layout: Asymmetric Split
   ============================================================ */
.layout {
  display: flex;
  height: 100vh;
  width: 100%;
}

/* ── Left Panel ── */
.panel-left {
  width: var(--panel-w);
  min-width: var(--panel-w);
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  background-color: var(--c-bg);
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 10;
  transition:
    background-color var(--dur-base) var(--ease-in-out),
    border-color     var(--dur-base) var(--ease-in-out);

  /* Thin scrollbar */
  scrollbar-width: thin;
  scrollbar-color: var(--c-border) transparent;
}

.panel-left::-webkit-scrollbar       { width: 3px; }
.panel-left::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 2px; }

/* ── Right Panel ── */
.panel-right {
  flex: 1;
  height: 100vh;
  overflow: hidden;
  position: relative;
  background-color: var(--c-hero-bg);
}

/* ============================================================
   4. Hero Image
   ============================================================ */
.hero-figure {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

/* スライド — 全枚を重ねて active だけ表示 */
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.4s var(--ease-in-out);
}

.hero-slide.is-active {
  opacity: 1;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  transform: scale(1.04);
  transition: transform 10s ease;
  will-change: transform;
}

/* ホバーでズームアウト（アクティブスライドのみ） */
.panel-right:hover .hero-slide.is-active .hero-img {
  transform: scale(1.0);
}

/* Left-edge vignette (blends into left panel) */
.hero-vignette {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to right,  var(--c-vignette-h) 0%, transparent 30%),
    linear-gradient(to bottom, var(--c-vignette-v) 0%, transparent 40%);
  pointer-events: none;
}

/* Film grain overlay */
.hero-grain {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 192px 192px;
  pointer-events: none;
}

/* ============================================================
   5. Site Header (sticky within .panel-left)
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 36px;
  background-color: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
  transition:
    background-color var(--dur-base) var(--ease-in-out),
    border-color     var(--dur-base) var(--ease-in-out);
}

/* Logo */
.logo {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 1.79rem;
  letter-spacing: 0.025em;
  color: var(--c-text);
  line-height: 1;
}

.logo-accent {
  color: var(--c-text-muted);
}

/* Header Controls */
.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ============================================================
   6. Theme Toggle Button
   ============================================================ */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  background: none;
  color: var(--c-text);
  transition:
    border-color     var(--dur-fast) ease,
    background-color var(--dur-fast) ease;
}

.theme-toggle:hover {
  background-color: var(--c-tag-bg);
}

.theme-toggle svg {
  width: 14px;
  height: 14px;
  display: block;
  transition: opacity var(--dur-fast) ease, transform var(--dur-base) var(--ease-out);
}

/* ライトモード時は月、ダークモード時は太陽を表示 */
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }

[data-theme="dark"] .theme-toggle .icon-sun  { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ============================================================
   7. Hamburger Button
   ============================================================ */
.hamburger {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  padding: 0;
  position: relative;
  z-index: 1001; /* Always on top within panel-left */
}

.hamburger-bar {
  display: block;
  height: 1px;
  background-color: var(--c-text);
  border-radius: 1px;
  transform-origin: center;
  transition:
    width       var(--dur-base) var(--ease-out),
    transform   var(--dur-slow) var(--ease-out),
    opacity     var(--dur-base) ease,
    background-color var(--dur-base) ease;
}

.bar-top    { width: 22px; }
.bar-bottom { width: 14px; }

/* Hover: bars spread symmetrically */
.hamburger:not(.is-active):hover .bar-top    { width: 26px; }
.hamburger:not(.is-active):hover .bar-bottom { width: 22px; }

/* Active (X state) */
.hamburger.is-active .bar-top    { width: 22px; transform: translateY(3px)  rotate(45deg); }
.hamburger.is-active .bar-bottom { width: 22px; transform: translateY(-3px) rotate(-45deg); }

/* Invert color inside overlay */
.hamburger.is-active .hamburger-bar {
  background-color: var(--c-overlay-text);
}

/* Overlay close button — PC: large circle at top-left of viewport */
.overlay-close {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 56px;
  height: 56px;
  background: none;
  border: 1.5px solid var(--c-overlay-text);
  border-radius: 50%;
  padding: 0;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.3s var(--ease-out);
}

.overlay-close:hover { opacity: 0.6; transform: scale(1.08); }

.overlay-close-bar {
  display: block;
  width: 26px;
  height: 1.5px;
  background-color: var(--c-overlay-text);
  border-radius: 1px;
  transform-origin: center;
}

.overlay-close-bar:first-child { transform: translateY(3.75px)  rotate(45deg); }
.overlay-close-bar:last-child  { transform: translateY(-3.75px) rotate(-45deg); }

@keyframes closeCirclePulse {
  0%   { transform: scale(1); }
  45%  { transform: scale(1.2); }
  75%  { transform: scale(0.95); }
  100% { transform: scale(1); }
}

/* PC only: pulse animation when overlay opens */
.overlay.is-open .overlay-close {
  animation: closeCirclePulse 0.55s var(--ease-out) 0.2s both;
}

/* ============================================================
   8. Overlay Navigation
   ============================================================ */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background-color: var(--c-overlay-bg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 10vh clamp(32px, 8vw, 96px);

  /* Hidden state */
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-slow) var(--ease-out);
}

.overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

/* Nav Links */
.overlay-nav {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 64px;
}

.overlay-link {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(4.55rem, 9.1vw, 8.45rem);
  line-height: 1.1;
  color: var(--c-overlay-text);
  letter-spacing: -0.02em;
  display: inline-block;
  position: relative;
  overflow: hidden;

  /* Staggered entrance — hidden by default */
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity   var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out),
    color     var(--dur-fast) ease;
}

/* Underline on hover */
.overlay-link::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--c-overlay-text);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}

.overlay-link:hover::after {
  transform: scaleX(1);
}

/* Staggered reveal when overlay opens */
.overlay.is-open .overlay-link:nth-child(1) {
  opacity: 1; transform: translateY(0);
  transition-delay: 0.08s;
}
.overlay.is-open .overlay-link:nth-child(2) {
  opacity: 1; transform: translateY(0);
  transition-delay: 0.15s;
}
.overlay.is-open .overlay-link:nth-child(3) {
  opacity: 1; transform: translateY(0);
  transition-delay: 0.22s;
}

/* Social links in overlay */
.overlay-meta {
  display: flex;
  flex-direction: column;
  gap: 12px;
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity   var(--dur-base) var(--ease-out) 0.32s,
    transform var(--dur-base) var(--ease-out) 0.32s;
}

.overlay.is-open .overlay-meta {
  opacity: 1;
  transform: translateY(0);
}

.overlay-meta-label {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.22em;

  color: var(--c-overlay-text);
  opacity: 0.4;
}

.overlay-social {
  display: flex;
  gap: 28px;
}

.overlay-social-link {
  font-size: 0.98rem;
  font-weight: 400;
  letter-spacing: 0.12em;

  color: var(--c-overlay-text);
  opacity: 0.55;
  transition: opacity var(--dur-fast) ease;
}

.overlay-social-link:hover {
  opacity: 1;
}

/* ============================================================
   9. Panel Content (scrollable area)
   ============================================================ */
.panel-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* ============================================================
   10. Sections
   ============================================================ */
.section {
  padding: 52px 36px;
  border-bottom: 1px solid var(--c-border);
  transition: border-color var(--dur-base) var(--ease-in-out);
}

/* Profile section gets extra breathing room */
.section-profile {
  position: relative;
  padding-top: 60px;
  padding-bottom: 60px;
}

/* ── Eyebrow ── */
.eyebrow {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.24em;

  color: var(--c-text-muted);
  margin-bottom: 20px;
  /* h1列幅（全幅 - アバター幅 - gap）に揃える */
  width: calc(100% - (clamp(2.6rem, 4.5vw, 3.5rem) * 2.1 + 10px + 0.72rem) - 20px);
}

/* ── Display Name ── */
.display-name {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(2.6rem, 4.5vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--c-text);
  margin-bottom: 28px; /* .profile-name-row 内では上書きされる */
}

.display-name em {
  font-style: italic;
  font-weight: 400;
}

/* ── Profile Name Row (h1 + avatar) ── */
.profile-name-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
}

.profile-name-col {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  flex: 1;
  gap: 10px;
}

.profile-name-row .display-name {
  margin-bottom: 0;
}

.profile-name-ja {
  font-family: var(--f-body);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--c-text-muted);
  line-height: 1;
}

.profile-name-sep {
  margin: 0 0.4em;
  opacity: 0.45;
}

.profile-avatar {
  /* h1（2行分）+ col gap + 日本語名行の合計高さに合わせる */
  width:  calc(clamp(2.6rem, 4.5vw, 3.5rem) * 2.1 + 10px + 0.72rem);
  height: calc(clamp(2.6rem, 4.5vw, 3.5rem) * 2.1 + 10px + 0.72rem);
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  flex-shrink: 0;
  filter: grayscale(10%);
  transition: filter var(--dur-base) var(--ease-in-out);
}

.profile-avatar:hover {
  filter: grayscale(0%);
}

/* ── Statement ── */
.statement {
  font-size: 1.08rem;
  font-weight: 400;
  line-height: 1.9;
  color: var(--c-text-muted);
  margin-bottom: 28px;
}

/* ── Scroll Guide ── */
.scroll-guide {
  position: absolute;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  color: var(--c-text-faint);
  transition: color var(--dur-base) var(--ease-in-out);
}

.scroll-guide-text {
  font-family: var(--f-body);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.24em;

  writing-mode: vertical-lr;
  color: var(--c-text-faint);
  transition: color var(--dur-base) var(--ease-in-out);
}

.scroll-guide-line {
  position: relative;
  width: 1px;
  height: 120px;
  overflow: hidden;
  background: var(--c-border);
  transition: background var(--dur-base) var(--ease-in-out);
}

.scroll-guide-bar {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 100%;
  background: var(--c-text-muted);
  animation: scrollGuideBar 1.8s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes scrollGuideBar {
  0% {
    transform: translateY(-100%);
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    transform: translateY(100%);
    opacity: 0;
  }
}

/* モバイル: 右端に余白を持たせて表示 */
@media (max-width: 768px) {
  .scroll-guide {
    right: 20px;
  }
}

/* ── "Read Profile" リンク ── */
.profile-more-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.2em;

  color: var(--c-text-muted);
  border-bottom: 1px solid var(--c-border);
  padding-bottom: 2px;
  transition:
    color       var(--dur-fast) ease,
    border-color var(--dur-fast) ease;
}

.profile-more-link:hover {
  color: var(--c-text);
  border-color: var(--c-text);
}

.profile-more-arrow {
  transition: transform var(--dur-base) var(--ease-out);
}

.profile-more-link:hover .profile-more-arrow {
  transform: translateX(4px);
}

/* ── Tags ── */
.profile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.1em;

  color: var(--c-text-muted);
  background-color: var(--c-tag-bg);
  padding: 5px 12px;
  border-radius: 2px;
  transition: background-color var(--dur-base) var(--ease-in-out),
              color            var(--dur-base) var(--ease-in-out);
}

/* ── Section Label ── */
.section-label {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.24em;

  color: var(--c-text-muted);
  margin-bottom: 28px;
}

/* ============================================================
   11. Link Cards
   ============================================================ */
.link-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.link-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border: 1px solid var(--c-border);
  border-radius: 3px;
  color: var(--c-text);
  position: relative;
  overflow: hidden;
  transition:
    border-color     var(--dur-fast) ease,
    background-color var(--dur-fast) ease;
}

/* Slide-in fill effect */
.link-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--c-text);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.42s var(--ease-out);
  z-index: 0;
}

.link-card:hover::before {
  transform: scaleX(1);
}

/* Ensure text sits above the fill */
.link-card-body,
.link-arrow {
  position: relative;
  z-index: 1;
}

/* Body */
.link-card-body {
  display: flex;
  align-items: center;
  gap: 14px;
}

.link-index {
  font-family: var(--f-display);
  font-size: 0.98rem;
  font-weight: 400;
  color: var(--c-text-faint);
  line-height: 1;
  width: 18px;
  flex-shrink: 0;
  transition: color 0.42s var(--ease-out);
}

.link-texts {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.link-title {
  font-size: 1.14rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  transition: color 0.42s var(--ease-out);
}

.link-sub {
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--c-text-muted);
  letter-spacing: 0.01em;
  transition: color 0.42s var(--ease-out);
}

/* Arrow */
.link-arrow {
  font-size: 1.17rem;
  opacity: 0.3;
  transition:
    opacity   var(--dur-fast) ease,
    transform var(--dur-base) var(--ease-out),
    color     0.42s var(--ease-out);
}

/* Hover color inversions */
.link-card:hover .link-index,
.link-card:hover .link-title,
.link-card:hover .link-arrow {
  color: var(--c-bg);
}

.link-card:hover .link-sub {
  color: var(--c-link-hover-sub);
}

.link-card:hover .link-arrow {
  opacity: 1;
  transform: translate(3px, -3px);
}

/* ============================================================
   12. Contact Form
   ============================================================ */
.contact-lead {
  font-size: 1.04rem;
  font-weight: 400;
  line-height: 1.8;
  color: var(--c-text-muted);
  margin-bottom: 36px;
}

.contact-caution {
  color: var(--c-text-muted);
  display: inline-block;
  margin-bottom:.6rem;
}

/* Honeypot — completely hidden from humans */
.hp-field {
  display: none !important;
  visibility: hidden;
  position: absolute;
  left: -9999px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.form-row {
  width: 100%;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.18em;

  color: var(--c-text-muted);
}

.required {
  color: var(--c-text);
  margin-left: 2px;
}

.optional {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--c-text-faint);
  text-transform: none;
  margin-left: 4px;
}

.form-input {
  width: 100%;
  background: none;
  border: none;
  border-bottom: 1px solid var(--c-border);
  padding: 10px 0;
  font-family: var(--f-body);
  font-size: 1.14rem;
  font-weight: 400;
  color: var(--c-text);
  outline: none;
  transition:
    border-color var(--dur-fast) ease,
    color        var(--dur-base) var(--ease-in-out);
}

.form-input::placeholder {
  color: var(--c-text-faint);
}

.form-input:focus {
  border-bottom-color: var(--c-text);
}

.form-textarea {
  resize: vertical;
  min-height: 108px;
  line-height: 1.75;
}

/* プルダウン（select） */
.form-select {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  padding-right: 28px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23999' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 2px center;
}

.form-select option {
  background: var(--c-bg);
  color: var(--c-text);
}

/* 未選択（placeholder 相当）のスタイル */
.form-select:invalid,
.form-select option[value=""] {
  color: var(--c-text-faint);
}

/* 選択済みは通常テキスト色 */
.form-select:not(:invalid) {
  color: var(--c-text);
}

/* 入力欄ラッパー（hint の基点） */
.form-field {
  position: relative;
}

/* 入力中に左上へ浮かぶ記入例ヒント */
.form-hint {
  position: absolute;
  top: 3px;
  left: 0;
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--c-text-faint);
  pointer-events: none;
  opacity: 0;
  transform: translateY(3px);
  transition:
    opacity  var(--dur-fast) ease,
    transform var(--dur-fast) ease;
}

/* 値が入力されたとき（プレースホルダー非表示）に hint を出す */
.form-input:not(:placeholder-shown) ~ .form-hint {
  opacity: 1;
  transform: translateY(0);
}

/* hint 分の上部余白を確保（input テキストと重ならないよう） */
.form-input:not(:placeholder-shown) {
  padding-top: 20px;
}

/* バリデーションエラー時のボーダー */
.form-input.is-invalid {
  border-bottom-color: #b94040;
}

/* エラーメッセージ */
.form-error {
  font-size: 0.82rem;
  font-weight: 400;
  color: #b94040;
  letter-spacing: 0.03em;
  margin-top: 6px;
}

.form-footer {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

/* Submit Button */
.submit-btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background-color: var(--c-text);
  color: var(--c-bg);
  border: none;
  padding: 14px 28px;
  font-family: var(--f-body);
  font-size: 0.94rem;
  font-weight: 500;
  letter-spacing: 0.16em;

  border-radius: 2px;
  transition:
    opacity          var(--dur-fast) ease,
    background-color var(--dur-base) var(--ease-in-out),
    color            var(--dur-base) var(--ease-in-out);
}

.submit-btn:hover {
  opacity: 0.72;
}

.submit-btn:active {
  opacity: 0.55;
}

.submit-icon {
  display: flex;
  align-items: center;
}

.submit-icon svg {
  width: 16px;
  height: 16px;
  color: var(--c-bg);
  transition: transform var(--dur-base) var(--ease-out),
              color     var(--dur-base) var(--ease-in-out);
}

.submit-btn:hover .submit-icon svg {
  transform: translateX(4px);
}

/* reCAPTCHA — バッジ非表示 & 開示テキスト */
.grecaptcha-badge {
  visibility: hidden;
}

.recaptcha-notice {
  font-size: 0.72rem;
  color: var(--c-text-muted);
  line-height: 1.6;
}

.recaptcha-notice a {
  color: var(--c-text-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.recaptcha-notice a:hover {
  color: var(--c-text);
}

/* ============================================================
   13. Site Footer
   ============================================================ */
.site-footer {
  padding: 36px 36px 40px;
  border-top: 1px solid var(--c-border);
  margin-top: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  transition: border-color var(--dur-base) var(--ease-in-out);
}

.footer-copy {
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--c-text-muted);
  letter-spacing: 0.05em;
}

.footer-location {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--c-text-faint);
  letter-spacing: 0.08em;
}

/* ============================================================
   14. Page Load Animation
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.panel-left {
  animation: fadeUp 0.6s var(--ease-out) both;
}

/* ============================================================
   15. Mobile: ≤ 768px
   ============================================================ */
@media (max-width: 768px) {
  body {
    overflow: auto;
  }

  .layout {
    flex-direction: column;
    height: auto;
    min-height: 100vh;
  }

  .panel-left {
    width: 100%;
    min-width: 0;
    height: auto;
    overflow: visible;
    border-right: none;
    border-bottom: 1px solid var(--c-border);
    animation: none;
  }

  /* Mobile hero: 3:2 aspect ratio */
  .panel-right {
    order: -1;
    flex: none;
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 2;
    position: relative; /* 子の absolute 配置の基点 */
  }

  /* height:auto の親で height:100% が解決しないため絶対配置でコンテナを埋める */
  .hero-figure {
    position: absolute;
    inset: 0;
    width: auto;
    height: auto;
  }

  .hero-img {
    transform: none;
    object-fit: cover;
    object-position: center center;
  }

  .panel-right:hover .hero-img {
    transform: none;
  }

  .site-header {
    padding: 18px 24px;
  }

  .overlay-close {
    top: 18px;
    left: auto;
    right: 24px;
    width: 34px;
    height: 34px;
    border-width: 1px;
    animation: none;
  }

  .overlay-close-bar {
    width: 22px;
    height: 1px;
  }

  .overlay-close-bar:first-child { transform: translateY(3px)  rotate(45deg); }
  .overlay-close-bar:last-child  { transform: translateY(-3px) rotate(-45deg); }

  .section {
    padding: 44px 24px;
  }

  .section-profile {
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .display-name {
    font-size: 2.8rem;
  }

  .site-footer {
    padding: 28px 24px 36px;
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-location {
    text-align: left;
  }

  .overlay {
    padding: 12vh 8vw;
  }
}

@media (max-width: 480px) {
  .section,
  .section-profile {
    padding-left: 20px;
    padding-right: 20px;
  }

  .site-header {
    padding: 18px 20px;
  }

  .overlay-close {
    top: 18px;
    right: 20px;
  }

  .display-name {
    font-size: 2.3rem;
  }

  .overlay-link {
    font-size: clamp(3.64rem, 14.3vw, 5.2rem);
  }
}

/* ============================================================
   16. Cookie Consent Banner
   ============================================================ */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--c-bg);
  border-top: 1px solid var(--c-border);
  z-index: 950;
  transform: translateY(100%);
  transition:
    transform      0.4s var(--ease-out),
    background     var(--dur-base) var(--ease-in-out),
    border-color   var(--dur-base) var(--ease-in-out);
}

.cookie-banner.is-visible {
  transform: translateY(0);
}

.cookie-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 36px;
  max-width: var(--panel-w);  /* 左パネル幅でコンテンツを収める */
}

.cookie-banner-text {
  font-size: 0.8rem;
  font-weight: 400;
  line-height: 1.75;
  color: var(--c-text-muted);
}

.cookie-banner-link {
  color: var(--c-text);
  border-bottom: 1px solid var(--c-border);
  transition: border-color var(--dur-fast) ease;
  white-space: nowrap;
}

.cookie-banner-link:hover {
  border-color: var(--c-text);
}

.cookie-banner-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.cookie-banner-btn {
  font-family: var(--f-body);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  white-space: nowrap;
  cursor: pointer;
}

.cookie-banner-accept {
  padding: 8px 20px;
  background: var(--c-text);
  color: var(--c-bg);
  border: 1px solid var(--c-text);
  border-radius: 2px;
  transition:
    opacity      var(--dur-fast) ease,
    background   var(--dur-base) var(--ease-in-out),
    color        var(--dur-base) var(--ease-in-out),
    border-color var(--dur-base) var(--ease-in-out);
}

.cookie-banner-accept:hover {
  opacity: 0.7;
}


@media (max-width: 768px) {
  .cookie-banner-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 24px;
    max-width: none;
  }
}

@media (max-width: 480px) {
  .cookie-banner-inner {
    padding: 20px 20px;
  }
}

/* ============================================================
   17. Scroll to Top ボタン
   ============================================================ */
.scroll-top {
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  bottom: 24px;
  /* PC: panel-left の右端から 24px 内側 */
  left: calc(var(--panel-w) - 44px - 24px);
  width: 44px;
  height: 44px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 50%;
  color: var(--c-text-muted);
  cursor: pointer;
  z-index: 900;
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity      var(--dur-fast) ease,
    transform    var(--dur-fast) ease,
    color        var(--dur-fast) ease,
    border-color var(--dur-fast) ease,
    background   var(--dur-base) var(--ease-in-out);
  pointer-events: none;
}

.scroll-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-top:hover {
  color: var(--c-text);
  border-color: var(--c-text);
}

.scroll-top:active {
  transform: translateY(2px);
}

.scroll-top svg {
  width: 16px;
  height: 16px;
}

@media (max-width: 768px) {
  /* モバイル: left を解除して画面右端基準に切り替え */
  .scroll-top {
    left: auto;
    right: 24px;
  }
}

/* ============================================================
   18. Profile Page — About Sections
   ============================================================ */

/* About lead (ヒーロー直下の導入文) */
.about-lead {
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.95;
  color: var(--c-text-muted);
  margin-bottom: 28px;
  transition: color var(--dur-base) var(--ease-in-out);
}

/* About body paragraphs (Philosophy など) */
.about-body {
  font-size: 0.94rem;
  font-weight: 400;
  line-height: 1.95;
  color: var(--c-text-muted);
  transition: color var(--dur-base) var(--ease-in-out);
}

.about-body + .about-body {
  margin-top: 20px;
}

/* ============================================================
   19. Company Feature Cards
   ============================================================ */
.company-cards {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.company-card {
  display: block;
  padding: 24px 20px;
  border: 1px solid var(--c-border);
  border-radius: 3px;
  color: var(--c-text);
  position: relative;
  overflow: hidden;
  transition: border-color var(--dur-fast) ease;
}

/* Slide-in fill (同 .link-card::before) */
.company-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--c-text);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.42s var(--ease-out);
  z-index: 0;
}

.company-card:hover::before {
  transform: scaleX(1);
}

.company-card-inner {
  position: relative;
  z-index: 1;
}

/* ヘッダー行: 社名 + 矢印 */
.company-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.company-card-name {
  font-family: var(--f-display);
  font-size: 1.44rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.15;
  transition: color 0.42s var(--ease-out);
}

.company-card-arrow {
  font-size: 1.14rem;
  opacity: 0.3;
  flex-shrink: 0;
  margin-top: 2px;
  transition:
    opacity   0.42s var(--ease-out),
    transform var(--dur-base) var(--ease-out),
    color     0.42s var(--ease-out);
}

.company-card:hover .company-card-arrow {
  opacity: 1;
  transform: translate(3px, -3px);
}

/* 役職ラベル */
.company-card-role {
  font-size: 0.71rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  /* text-transform: uppercase; */
  color: var(--c-text-muted);
  margin-bottom: 14px;
  transition: color 0.42s var(--ease-out);
}

/* 説明文 */
.company-card-desc {
  font-size: 0.88rem;
  font-weight: 400;
  line-height: 1.85;
  color: var(--c-text-muted);
  margin-bottom: 16px;
  transition: color 0.42s var(--ease-out);
}

/* URL */
.company-card-url {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--c-text-faint);
  transition: color 0.42s var(--ease-out);
}

/* ホバー時の色反転 */
.company-card:hover .company-card-name,
.company-card:hover .company-card-arrow,
.company-card:hover .company-card-url {
  color: var(--c-bg);
}

.company-card:hover .company-card-role,
.company-card:hover .company-card-desc {
  color: var(--c-link-hover-sub);
}

/* ============================================================
   20. Timeline
   ============================================================ */

/* ページ内注記 */
.timeline-note {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--c-text-faint);
  letter-spacing: 0.04em;
  margin-bottom: 36px;
  transition: color var(--dur-base) var(--ease-in-out);
}

.section-timeline {
  padding-bottom: 64px;
}

.timeline {
  list-style: none;
  position: relative;
  /* padding-left: 縦線(1px) + 余白 + 丸(10px) + 余白 */
  padding-left: 32px;
}

/* 縦線 */
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;           /* 縦線の水平位置 */
  top: 8px;
  bottom: 28px;
  width: 1px;
  background: var(--c-border);
  transition: background var(--dur-base) var(--ease-in-out);
}

.timeline-item {
  position: relative;
  padding-bottom: 44px;
}

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

/* 丸 — 縦線に重なる */
.timeline-item::before {
  content: '';
  position: absolute;
  /* 縦線(left:8) から .timeline-item 左端までの差 = padding-left(32) を引く
     丸の中心を縦線に合わせる: 8 - 32 - (10/2) = -29px */
  left: -29px;
  top: 5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--c-text-muted);
  background: var(--c-bg);
  transition:
    background-color var(--dur-base) var(--ease-in-out),
    border-color     var(--dur-base) var(--ease-in-out);
}

/* Present (現在) — 塗りつぶし */
.timeline-item.is-current::before {
  background-color: var(--c-text-muted);
}

/* 年月ラベル */
.timeline-year {
  display: block;
  font-family: var(--f-body);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;

  color: var(--c-text-faint);
  margin-bottom: 8px;
  transition: color var(--dur-base) var(--ease-in-out);
}

/* 見出し */
.timeline-title {
  font-size: 1.0rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.45;
  color: var(--c-text);
  margin-bottom: 10px;
  transition: color var(--dur-base) var(--ease-in-out);
}

/* 本文 */
.timeline-body {
  font-size: 0.87rem;
  font-weight: 400;
  line-height: 1.88;
  color: var(--c-text-muted);
  transition: color var(--dur-base) var(--ease-in-out);
}

/* ============================================================
   21. Accessibility
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--c-text);
  outline-offset: 3px;
  border-radius: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   22. QR Code Modal (Digital Card)
   ============================================================ */

/* QR Trigger Button — mirrors .theme-toggle sizing & style */
.qr-trigger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  background: none;
  color: var(--c-text);
  transition:
    border-color     var(--dur-fast) ease,
    background-color var(--dur-fast) ease;
}

.qr-trigger:hover {
  background-color: var(--c-tag-bg);
}

.qr-trigger svg {
  width: 14px;
  height: 14px;
  display: block;
}

/* Overlay backdrop */
.qr-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background-color: var(--c-modal-overlay-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;

  /* Hidden state */
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out);
}

.qr-modal-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

/* Modal card — always white bg so QR renders cleanly in any theme */
.qr-modal {
  position: relative;
  background-color: var(--c-modal-bg);
  border-radius: 4px;
  padding: 36px 40px 32px;
  width: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  box-shadow: var(--c-modal-shadow);

  /* Rise-up animation — starts slightly below */
  transform: translateY(18px);
  transition: transform var(--dur-slow) var(--ease-out);
}

.qr-modal-overlay.is-open .qr-modal {
  transform: translateY(0);
}

/* Close button */
.qr-modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  color: var(--c-modal-faint);
  border-radius: 50%;
  transition: background-color var(--dur-fast) ease, color var(--dur-fast) ease;
}

.qr-modal-close:hover {
  background-color: var(--c-modal-hover-bg);
  color: var(--c-modal-text);
}

.qr-modal-close svg {
  width: 13px;
  height: 13px;
  display: block;
}

/* Eyebrow label */
.qr-modal-label {
  font-family: var(--f-body);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.22em;

  color: var(--c-modal-faint);
  line-height: 1;
}

/* QR image */
.qr-modal-img {
  width: 168px;
  height: 168px;
  display: block;
}

/* ============================================================
   23. Inquiry Type Checkboxes
   ============================================================ */
.check-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 4px;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--c-border);
  cursor: pointer;
  transition: border-color var(--dur-base) var(--ease-in-out);
}

.check-item:first-child {
  border-top: 1px solid var(--c-border);
}

/* ブラウザデフォルトを非表示にして独自ボックスへ */
.check-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.check-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border: 1px solid var(--c-border);
  border-radius: 2px;
  flex-shrink: 0;
  position: relative;
  transition:
    border-color     var(--dur-fast) ease,
    background-color var(--dur-fast) ease;
}

/* チェックマーク */
.check-box::after {
  content: '';
  display: block;
  width: 4px;
  height: 7px;
  border-right: 1.5px solid var(--c-bg);
  border-bottom: 1.5px solid var(--c-bg);
  transform: rotate(45deg) translate(-1px, -1px);
  opacity: 0;
  transition: opacity var(--dur-fast) ease;
}

.check-input:checked + .check-box {
  background-color: var(--c-text);
  border-color: var(--c-text);
}

.check-input:checked + .check-box::after {
  opacity: 1;
}

.check-label {
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--c-text-muted);
  letter-spacing: 0.01em;
  transition: color var(--dur-base) var(--ease-in-out);
}

.check-item:hover .check-box {
  border-color: var(--c-text-muted);
}

/* URL text */
.qr-modal-url {
  font-family: var(--f-body);
  font-size: 0.91rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--c-modal-muted);
  text-align: center;
  line-height: 1;
}

/* ============================================================
   24. Privacy Policy Page (privacy.html)
   ============================================================ */

.privacy-wrap {
  flex: 1;
  padding: 60px 36px 80px;
  max-width: 640px;
}

.privacy-eyebrow {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.24em;

  color: var(--c-text-muted);
  margin-bottom: 24px;
}

.privacy-heading {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(2rem, 4vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-text);
  margin-bottom: 48px;
}

.privacy-heading em {
  font-style: italic;
}

.privacy-section {
  margin-bottom: 40px;
}

.privacy-section-title {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;

  color: var(--c-text-muted);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-border);
}

.privacy-body {
  font-size: 0.95rem;
  font-weight: 400;
  line-height: 1.9;
  color: var(--c-text-muted);
}

.privacy-body a {
  color: var(--c-text);
  border-bottom: 1px solid var(--c-border);
  transition: border-color var(--dur-fast) ease;
}

.privacy-body a:hover {
  border-color: var(--c-text);
}

.privacy-updated {
  font-size: 0.78rem;
  color: var(--c-text-muted);
  margin-top: 48px;
}

.privacy-wrap .back-link {
  margin-top: 48px;
}

@media (max-width: 768px) {
  .privacy-wrap {
    padding: 52px 24px 64px;
  }
}

@media (max-width: 480px) {
  .privacy-wrap {
    padding: 48px 20px 56px;
  }
}