/* =========================================================
   COMPONENTS — ナビ / ボタン / 作品カード / モーダル / フッター
   ========================================================= */

/* ---------- Fixed Navigation ---------- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 clamp(1.25rem, 3vw, 2.5rem);
  transition: background-color 0.35s ease, box-shadow 0.35s ease;
}

.site-nav.is-scrolled {
  background-color: rgba(242, 240, 237, 0.82);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--color-line);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: baseline;
  gap: 3px;
}

.nav-logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 1px solid var(--color-text);
}

.nav-links ul {
  display: flex;
  align-items: center;
  gap: clamp(1.2rem, 2.5vw, 2.4rem);
}

.nav-links a {
  position: relative;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.4rem 0;
}

.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s var(--ease-out);
}

.nav-links a:not(.nav-cta):hover::after,
.nav-links a:not(.nav-cta):focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-cta {
  background: var(--color-accent);
  color: var(--color-text-on-yellow);
  border: 1px solid var(--color-text);
  border-radius: 999px;
  padding: 0.45rem 1.2rem !important;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 2px 3px 0 var(--color-text);
}

/* Hamburger (mobile) */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  width: 44px;
  height: 44px;
  padding: 10px;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.3s var(--ease-out);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(4.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  transform: translateY(-4.5px) rotate(-45deg);
}

@media (max-width: 767px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    inset: 0;
    background: var(--color-bg);
    display: grid;
    place-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }

  .nav-links.is-open {
    opacity: 1;
    visibility: visible;
  }

  .nav-links ul {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }

  .nav-links a {
    font-size: 1.4rem;
  }

  .site-nav .nav-toggle {
    position: relative;
    z-index: 101;
  }
}

/* ---------- Buttons / Links ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  border: 1px solid var(--color-text);
  border-radius: 999px;
  padding: 0.85em 1.9em;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out), background-color 0.25s ease;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-text-on-yellow);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  transform: translateY(-3px);
  box-shadow: 3px 4px 0 var(--color-text);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: var(--color-accent);
  transform: translateY(-3px);
}

/* ---------- Device frame(画像差し替え前提の共通フレーム)---------- */
/* aspect-ratio を持たせて CLS を防止。中身の img/svg は object-fit で収める */
.frame {
  position: relative;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--color-line-strong);
}

.frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.frame--phone {
  /* 実際のスクリーンショットの比率。9/19 だと縦に2.6%切れて
     ステータスバーやホームインジケータが欠ける */
  aspect-ratio: 869 / 1884;
  border-radius: clamp(18px, 2.4vw, 34px);
  box-shadow: 0 24px 60px -24px rgba(23, 23, 23, 0.35);
}

.frame--browser {
  aspect-ratio: 16 / 10.5;
  border-radius: 10px;
  box-shadow: 0 24px 60px -28px rgba(23, 23, 23, 0.3);
}

.frame--board {
  aspect-ratio: 4 / 3;
  border-radius: 10px;
  box-shadow: 0 24px 60px -28px rgba(23, 23, 23, 0.3);
}

/* ---------- Work Modal ---------- */
.work-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: clamp(0.75rem, 3vw, 3rem);
}

.work-modal[hidden] {
  display: none;
}

.work-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(23, 23, 23, 0.92);
}

.work-modal-panel {
  position: relative;
  width: min(860px, 100%);
  max-height: min(86vh, 86svh);
  overflow-y: auto;
  background: var(--color-bg);
  border: 1px solid var(--color-text);
  border-radius: 14px;
  padding: clamp(1.5rem, 4vw, 3.5rem);
}

.work-modal-close {
  position: sticky;
  top: 0;
  float: right;
  margin: -0.5rem -0.5rem 0 1rem;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  line-height: 1;
  border: 1px solid var(--color-text);
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-text-on-yellow);
  transition: transform 0.25s var(--ease-out);
  z-index: 2;
}

.work-modal-close:hover {
  transform: rotate(90deg);
}

.modal-category {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--color-muted);
  margin-bottom: 0.8rem;
}

.modal-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 5vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 1.4rem;
  word-break: auto-phrase;
}

.modal-figure {
  margin: 0 0 2rem;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: 10px;
  overflow: hidden;
}

.modal-figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* phone作品はFVと同じiPhoneコンポーネント(.hero-device一式)を共通利用。
   ここは位置決めの箱だけ。aspect-ratioで読み込み前から場所を確保する */
.modal-figure--device {
  position: relative;
  width: min(280px, 62%);
  aspect-ratio: 10 / 19;
  margin-inline: auto;
  background: transparent;
  border: 0;
  overflow: visible;
}

.modal-figure--device .hero-device {
  height: 100%;
}

.modal-figure--device .hero-device-screen img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: none;
  display: block;
}

.modal-summary {
  font-size: 1rem;
  line-height: 2;
  margin-bottom: 2.2rem;
  max-width: 40em;
}

.modal-block + .modal-block {
  margin-top: 1.8rem;
}

.modal-block h4 {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 0.8rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-line);
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.modal-tags li {
  font-size: 0.82rem;
  font-weight: 500;
  border: 1px solid var(--color-line-strong);
  border-radius: 999px;
  padding: 0.3em 1em;
  background: #fff;
}

.modal-tags--accent li {
  background: var(--color-accent);
  border-color: var(--color-text);
  color: var(--color-text-on-yellow);
}

.modal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2.4rem;
}

/* ---------- Footer ---------- */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.6rem var(--space-gutter);
  border-top: 1px solid var(--color-line);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--color-muted);
}

.footer-top {
  font-weight: 700;
  color: var(--color-text);
}

.footer-top:hover {
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 2px;
}