/* ============================================================
   common.css — 全ページ共通スタイル
   ============================================================ */

/* VARIABLES */
:root {
  --bg: #f8f8f8;
  --surface: #FFF9E6;
  --surface2: #FFEFD0;
  --border: #1E2738;
  --muted: #888;
  --text: #1E2738;
  --text-sub: #555;
  --accent: #FF6B1A;
}

/* 作品ページごとのアクセントカラー上書き */
.work-hr {
  --accent: #3088D5;
}

/* 大宮ホーロー北海道製作所 */
.work-fd {
  --accent: #55846A;
}

/* フードドライブ */
.work-ys {
  --accent: #CD4E96;
}

/* 安田ゼミ */
.work-an {
  --accent: #FD2E95;
}

/* あのね */
.work-os {
  --accent: #606C5D;
}

/* おすみつき */
.work-ep {
  --accent: #5A9B8B;
}

/* えぺっつ */
.work-it {
  --accent: #F0A2A2;
}

/* いちご屋 */

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Zen Kaku Gothic New', sans-serif;
  font-weight: 400;
  overflow-x: hidden;
  cursor: none;
}

/* CURSOR */
#cur {
  position: fixed;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width .2s, height .2s;
}

#cur-ring {
  position: fixed;
  width: 34px;
  height: 34px;
  border: 2.5px solid var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: width .3s, height .3s;
}

/* NAV */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 2.5rem;
  background: var(--bg);
  border-bottom: 2.5px solid transparent;
  transition: border-color .3s;
}

nav.scrolled {
  border-bottom-color: var(--border);
}

.nav-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
  padding: 0.3rem 0.7rem;
  border: 2px solid transparent;
  transition: all .15s;
}

.nav-links a:hover,
.nav-links a.active {
  border-color: var(--accent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.nav-tag {
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  border: 1.5px solid var(--accent);
  padding: 0.1rem 0.35rem;
  margin-right: 0.5rem;
  vertical-align: middle;
  line-height: 1;
  display: inline-block;
}

/* DROPDOWN */
.nav-has-dropdown {
  position: relative;
}

.nav-dropdown-btn {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  background: none;
  border: 2px solid transparent;
  padding: 0.3rem 0.7rem;
  cursor: none;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: all .15s;
}

.nav-dropdown-btn:hover,
.nav-has-dropdown.open .nav-dropdown-btn {
  border-color: var(--accent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.nav-dropdown-arrow {
  font-size: 0.6rem;
  transition: transform .2s;
  display: inline-block;
}

.nav-has-dropdown.open .nav-dropdown-arrow {
  transform: rotate(180deg);
}

/* PC：絶対配置ドロップダウン */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 0.75rem);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 200px;
  background: var(--bg);
  border: 2.5px solid var(--border);
  list-style: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 300;
}

.nav-has-dropdown.open .nav-dropdown {
  opacity: 1;
  pointer-events: all;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown li {
  border-bottom: 1px solid var(--surface2);
}

.nav-dropdown li:first-child {
  border-bottom: 2.5px solid var(--border);
  /* 「一覧」だけ区切りを強調 */
}

.nav-dropdown li:last-child {
  border-bottom: none;
}

.nav-dropdown a {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.75rem 1rem;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
  transition: background .15s, color .15s;
}

.nav-dropdown li:first-child a {
  color: var(--accent);
  /* 「一覧」リンクはアクセントカラー */
}

.nav-dropdown a:hover {
  background: var(--accent);
  color: #fff;
}

.nav-dropdown li:first-child a:hover {
  color: #fff;
}

/* スマホ：アコーディオン */
@media (max-width: 768px) {
  .nav-dropdown-btn {
    font-size: 1rem;
    padding: 1.2rem 0.5rem;
    width: 100%;
    justify-content: space-between;
    border: none;
    border-radius: 0;
  }

  .nav-dropdown-btn:hover,
  .nav-has-dropdown.open .nav-dropdown-btn {
    background: none;
    border: none;
    color: var(--accent);
  }

  .nav-dropdown {
    position: static;
    transform: none;
    border: none;
    border-top: 1px solid var(--surface2);
    opacity: 1;
    pointer-events: all;
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
  }

  .nav-has-dropdown.open .nav-dropdown {
    max-height: 500px;
    transform: none;
  }

  .nav-links .nav-dropdown a {
    font-size: 0.75rem;
    padding: 0.5rem;
  }
}


/* HAMBURGER */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: 2px solid var(--border);
  cursor: none;
  padding: 6px;
  z-index: 300;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  transition: transform .3s, opacity .3s;
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* NAV OVERLAY */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(30, 39, 56, .4);
  z-index: 240;
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s;
}

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

/* FOOTER */
footer {
  background: var(--text);
  padding: 2rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 2.5px solid rgba(255, 255, 255, 0.1);
}

footer span {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.3);
}

footer a {
  color: rgba(255, 255, 255, 0.3);
  text-decoration: none;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  transition: color .15s;
}

footer a:hover {
  color: var(--accent);
}

/* SCROLL REVEAL */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}

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

.reveal-d1 {
  transition-delay: .1s;
}

.reveal-d2 {
  transition-delay: .2s;
}

.reveal-d3 {
  transition-delay: .3s;
}

/* ANIMATIONS */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

/* PAGE HERO (About / Contact 共通) */
.page-hero {
  padding: 9rem 2.5rem 5rem;
  border-bottom: 2.5px solid var(--border);
  position: relative;
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  top: 50%;
  right: -2%;
  transform: translateY(-50%);
  font-size: clamp(5rem, 15vw, 16rem);
  font-weight: 700;
  color: var(--surface2);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.04em;
}

.page-hero-inner {
  position: relative;
  z-index: 1;
}

.page-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--accent);
  padding: 0.3rem 0.8rem;
  margin-bottom: 1.5rem;
  animation: fadeUp .7s ease .1s both;
}

.page-title {
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 1.5rem;
  animation: fadeUp .7s ease .25s both;
}

.page-title span {
  color: var(--accent);
}

.page-lead {
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.8;
  color: var(--text-sub);
  max-width: 520px;
  animation: fadeUp .7s ease .4s both;
}

/* SECTION LABEL / TITLE */
.section-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--text);
  padding: 0.25rem 0.7rem;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.1;
}


.col-label {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--text);
  padding: 0.2rem 0.6rem;
  margin-bottom: 2rem;
}

/* HIGHLIGHT TEXT */
.highlight-text {
  font-weight: bold;
  text-decoration: none;
  cursor: default;
}

.highlight-text:hover {
  text-decoration: underline double;
  text-decoration-color: currentColor;
  text-underline-offset: 4px;
}

/* PAGE TRANSITION */
#page-transition {
  position: fixed;
  inset: 0;
  z-index: 9000;
  pointer-events: none;
}

.pt-panel {
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
}

#page-transition.is-leaving .pt-panel {
  animation: ptClose .45s cubic-bezier(.76, 0, .24, 1) forwards;
}

#page-transition.is-entering .pt-panel {
  transform: scaleX(1);
  transform-origin: right center;
  animation: ptOpen .45s cubic-bezier(.76, 0, .24, 1) .05s forwards;
}

@keyframes ptClose {
  from {
    transform: scaleX(0);
    transform-origin: left center;
  }

  to {
    transform: scaleX(1);
    transform-origin: left center;
  }
}

@keyframes ptOpen {
  from {
    transform: scaleX(1);
    transform-origin: right center;
  }

  to {
    transform: scaleX(0);
    transform-origin: right center;
  }
}

/* トップへボタン */
.to-top--tp {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: none;
  opacity: 0;
  pointer-events: none;
  z-index: 100;
  background: none;
  border: none;
  padding: 0;
  transform: translateY(16px);
  transition: opacity .35s ease, transform .35s ease;
}

.to-top--tp.visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.to-top--tp:hover {
  transform: translateY(-6px);
}

.to-top--tp img {
  object-fit: contain;
  display: block;
}

/* hr */
.to-top--hr {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: none;
  opacity: 0;
  pointer-events: none;
  z-index: 100;
  background: none;
  border: none;
  padding: 0;
  transform: translateY(16px);
  transition: opacity .35s ease, transform .35s ease;
}

.to-top--hr.visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.to-top--hr:hover {
  transform: translateY(-6px);
}

.to-top--hr img {
  object-fit: contain;
  display: block;
}

/* fd */
.to-top--fd {
  position: fixed;
  bottom: 1rem;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: none;
  opacity: 0;
  pointer-events: none;
  z-index: 100;
  background: none;
  border: none;
  padding: 0;
  transform: translateY(16px);
  transition: opacity .35s ease, transform .35s ease;
}

.to-top--fd.visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.to-top--fd:hover {
  transform: translateY(-6px);
}

.to-top--fd img {
  width: 130px;
  height: 130px;
  object-fit: contain;
  display: block;
}

/* ys */
.to-top--ys {
  position: fixed;
  bottom: 0;
  right: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: none;
  opacity: 0;
  pointer-events: none;
  z-index: 100;
  background: none;
  border: none;
  padding: 0;
  transform: translateY(16px);
  transition: opacity .35s ease, transform .35s ease;
}

.to-top--ys.visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.to-top--ys:hover {
  transform: translateY(-6px);
}

.to-top--ys img {
  width: 130px;
  height: 130px;
  object-fit: contain;
  display: block;
}

/* ep */
.to-top--ep {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: none;
  opacity: 0;
  pointer-events: none;
  z-index: 100;
  background: none;
  border: none;
  padding: 0;
  transform: translateY(16px);
  transition: opacity .35s ease, transform .35s ease;
}

.to-top--ep.visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.to-top--ep:hover {
  transform: translateY(-6px);
}

.to-top--ep img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  display: block;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  nav {
    padding: 1rem 1.2rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .nav-links a {
    font-size: 0.68rem;
    padding: 0.2rem 0.4rem;
  }

  .page-hero {
    padding: 7rem 1.2rem 3.5rem;
  }

  footer {
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.5rem 1.2rem;
  }

  .nav-hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70vw;
    height: 100dvh;
    background: var(--bg);
    border-left: 2.5px solid var(--border);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 0;
    padding: 2rem;
    transition: right .35s ease;
    z-index: 250;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links li {
    width: 100%;
    border-bottom: 1px solid var(--surface2);
  }

  .nav-links a {
    display: block;
    font-size: 1rem;
    padding: 1.2rem 0.5rem;
  }
}

.content-text a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1.5px solid var(--accent);
  padding-bottom: 0.05em;
  transition: opacity .15s;
}

.content-text a:hover {
  opacity: 0.7;
}

.nav-dropdown a:hover .nav-tag {
  color: #fff;
  border-color: #fff;
}