/* ============================================================
   创艺邦 · 案例展示子页面
   Portfolio gallery styles
   ============================================================ */

.nav__links a.active {
  color: var(--brass-ink) !important;
  font-weight: 700;
}

.nav__links a.active::after {
  transform: scaleX(1);
  background: var(--brass);
}

#behind-scenes {
  scroll-margin-top: 92px;
}

.cases-page .reveal {
  opacity: 1;
  transform: none;
}

.portfolio-filter {
  background: var(--ink);
  color: var(--paper);
  padding: 64px 0 22px;
}

.portfolio-filter__heading {
  max-width: 680px;
  margin-bottom: 28px;
}

.portfolio-filter__heading h2 {
  margin-top: 12px;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.1;
}

.portfolio-filter__heading > p:last-child {
  margin-top: 12px;
  color: var(--muted-light);
}

.portfolio-grid {
  background: var(--ink);
  padding-top: 48px;
  padding-bottom: clamp(90px, 12vw, 150px);
}

.portfolio-behind {
  background:
    radial-gradient(70% 55% at 8% 0%, rgba(197, 154, 66, 0.11), transparent 64%),
    var(--ink);
  color: var(--paper);
  border-top: 1px solid rgba(197, 154, 66, 0.32);
}

.portfolio-behind__head {
  margin-bottom: 38px;
}

.portfolio-behind__head .h2 {
  color: var(--paper);
}

.portfolio-behind__head .section-head__note,
.portfolio-behind__total {
  color: var(--muted-light);
}

.portfolio-behind__total {
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: 0.08em;
}

.portfolio-behind__total span {
  color: var(--brass-2);
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 700;
}

.portfolio-behind__empty {
  padding: clamp(38px, 6vw, 72px) 28px;
  border: 1px dashed rgba(197, 154, 66, 0.42);
  border-radius: var(--radius);
  background: rgba(248, 245, 237, 0.04);
  text-align: center;
}

.portfolio-behind__empty strong {
  display: block;
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.5vw, 2rem);
}

.portfolio-behind__empty p {
  margin-top: 10px;
  color: var(--muted-light);
}

.portfolio-behind__grid {
  margin-top: 0;
}

.portfolio-behind__grid .work-card__media {
  border-color: rgba(248, 245, 237, 0.2);
}

.portfolio-behind__grid .work-card__tag {
  color: var(--brass-2);
}

.portfolio-behind__grid .work-card__title {
  color: var(--paper);
}

.portfolio-behind__grid .work-card__play {
  background: var(--brass-2);
}

.portfolio-behind[hidden],
.portfolio-behind__grid[hidden],
.portfolio-behind__empty[hidden] {
  display: none;
}

/* ---------- Portfolio hero ---------- */

.portfolio-hero {
  position: relative;
  min-height: 76vh;
  min-height: 76svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(60% 55% at 82% 12%, rgba(197, 154, 66, 0.12), transparent 62%),
    var(--paper);
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

.portfolio-hero__bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.portfolio-hero__word {
  font-family: var(--serif);
  font-size: clamp(9rem, 26vw, 22rem);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(41, 51, 47, 0.2);
  letter-spacing: 0.06em;
  white-space: nowrap;
  user-select: none;
}

.portfolio-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: 150px;
  padding-bottom: 130px;
}

.portfolio-hero__title {
  font-family: var(--serif);
  font-size: clamp(3.2rem, 9vw, 7.5rem);
  line-height: 1;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin-top: 28px;
}

.portfolio-hero__title::after {
  content: "";
  display: block;
  width: 110px;
  height: 2px;
  background: var(--brass);
  margin-top: 30px;
}

.portfolio-hero__lead {
  margin-top: 30px;
  color: var(--muted-dark);
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  line-height: 1.9;
}

.portfolio-hero__stats {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-top: 44px;
  flex-wrap: wrap;
}

.portfolio-hero__stats span {
  font-family: var(--serif);
  font-size: clamp(2rem, 3.4vw, 2.8rem);
  font-weight: 700;
  color: var(--brass-2);
  font-variant-numeric: tabular-nums;
}

.portfolio-hero__stats i {
  font-style: normal;
  color: var(--muted-dark);
  font-size: 14px;
  letter-spacing: 0.1em;
  margin-right: 26px;
}

.portfolio-hero__marquee {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  border-top: 1px solid var(--line);
  background: rgba(41, 51, 47, 0.94);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  overflow: hidden;
}

.portfolio-hero__track {
  display: flex;
  align-items: center;
  gap: 36px;
  padding: 17px 0;
  white-space: nowrap;
  width: max-content;
  animation: marquee 30s linear infinite;
}

.portfolio-hero__track span {
  font-size: 14px;
  letter-spacing: 0.22em;
  color: var(--muted-light);
}

.portfolio-hero__track i {
  font-style: normal;
  color: var(--brass);
  font-size: 9px;
}

/* ---------- Filter ---------- */

.portfolio-filter {
  padding: 46px 0 10px;
  background: var(--ink);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted-light);
  font-size: 14px;
  letter-spacing: 0.08em;
  padding: 11px 24px;
  cursor: pointer;
  transition: background 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease), transform 0.35s var(--ease);
}

.filter-btn:hover {
  border-color: var(--brass);
  color: var(--brass-2);
  transform: translateY(-2px);
}

.filter-btn.is-active {
  background: var(--brass);
  border-color: var(--brass);
  color: var(--ink);
  font-weight: 700;
}

.filter-count {
  margin-top: 18px;
  color: var(--muted-light);
  font-size: 13px;
  letter-spacing: 0.12em;
}

.filter-count strong {
  color: var(--brass-2);
  font-family: var(--serif);
  font-size: 16px;
}

/* ---------- Works grid ---------- */

.portfolio-grid {
  padding-top: 54px;
  background: var(--ink);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.work-card {
  position: relative;
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.work-card.is-in {
  opacity: 1;
  transform: none;
}

.work-card.is-hidden {
  display: none;
}

.work-card__open {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: inherit;
}

.work-card__media {
  position: relative;
  display: block;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.work-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.35) brightness(0.9);
  transition: transform 1s var(--ease), filter 0.6s var(--ease);
}

.work-card__open:hover .work-card__media img {
  transform: scale(1.08);
  filter: grayscale(0) brightness(1);
}

.work-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(13, 12, 10, 0.72) 100%);
  opacity: 0;
  transition: opacity 0.5s var(--ease);
}

.work-card__open:hover .work-card__media::after {
  opacity: 1;
}

.work-card__play {
  position: absolute;
  right: 16px;
  bottom: 16px;
  z-index: 3;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--brass);
  color: var(--ink);
  display: grid;
  place-items: center;
  font-size: 15px;
  box-shadow: 0 12px 34px rgba(197, 154, 66, 0.4);
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}

.work-card__open:hover .work-card__play {
  opacity: 1;
  transform: scale(1);
}

.work-card__num {
  position: absolute;
  top: 16px;
  left: 18px;
  z-index: 3;
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 0.14em;
  color: rgba(248, 245, 237, 0.85);
  text-shadow: 0 2px 12px rgba(13, 12, 10, 0.6);
}

.work-card__meta {
  display: block;
  padding: 18px 6px 4px;
}

.work-card__tag {
  display: block;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--brass-2);
  margin-bottom: 8px;
}

.work-card__title {
  display: block;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  transition: color 0.3s var(--ease);
}

.work-card__open:hover .work-card__title {
  color: var(--brass-2);
}

/* ---------- Modal ---------- */

.work-modal {
  position: fixed;
  inset: 0;
  z-index: 9200;
  display: grid;
  place-items: center;
  padding: 24px;
}

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

.work-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(13, 12, 10, 0.82);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.work-modal__panel {
  position: relative;
  width: min(1080px, 100%);
  max-height: 92vh;
  overflow: auto;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 60px 140px rgba(0, 0, 0, 0.6);
  animation: modalIn 0.45s var(--ease);
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(36px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.work-modal__close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 5;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(41, 51, 47, 0.92);
  color: var(--paper);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.work-modal__close:hover {
  background: var(--brass);
  border-color: var(--brass);
  color: var(--ink);
  transform: rotate(90deg);
}

.work-modal__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--ink);
  display: grid;
  place-items: center;
}

.work-modal__media img,
.work-modal__media video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.work-modal__media video {
  background: var(--ink);
}

.work-modal__media img.is-hidden,
.work-modal__media video.is-hidden {
  display: none;
}

.work-modal__info {
  padding: 28px 34px 30px;
  display: grid;
  gap: 10px;
}

.work-modal__info .case-tag {
  position: static;
  justify-self: start;
  background: rgba(197, 154, 66, 0.14);
  border-color: rgba(224, 182, 90, 0.4);
  color: var(--brass-2);
}

.work-modal__info h3 {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 700;
}

.work-modal__info p {
  color: var(--muted-light);
  font-size: 14.5px;
}

.work-modal__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.work-modal__nav button {
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted-light);
  padding: 10px 20px;
  font-size: 14px;
  cursor: pointer;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease), transform 0.3s var(--ease);
}

.work-modal__nav button:hover {
  border-color: var(--brass);
  color: var(--brass-2);
  transform: translateY(-2px);
}

.work-modal__nav span {
  font-family: var(--serif);
  color: var(--muted-light);
  font-size: 14px;
  letter-spacing: 0.14em;
}

body.modal-open {
  overflow: hidden;
}

/* ---------- CTA ---------- */

.portfolio-cta {
  background:
    radial-gradient(60% 60% at 50% 0%, rgba(197, 154, 66, 0.12), transparent 62%),
    var(--ink);
  border-top: 1px solid var(--line);
  text-align: center;
}

.portfolio-cta .eyebrow {
  justify-content: center;
}

.portfolio-cta .h2 {
  margin-inline: auto;
}

.portfolio-cta__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 44px;
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  .works-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .works-grid {
    grid-template-columns: 1fr;
  }

  .work-modal {
    padding: 12px;
  }

  .work-modal__info {
    padding: 22px 20px 24px;
  }

  .work-modal__nav {
    flex-wrap: wrap;
  }

  .portfolio-hero__stats i {
    margin-right: 14px;
  }
}

/* ---------- Bright brand theme ---------- */
.portfolio-hero,
.portfolio-filter,
.portfolio-grid,
.portfolio-cta {
  background-color: var(--paper);
  color: var(--ink);
}

.portfolio-hero {
  background:
    radial-gradient(60% 55% at 82% 12%, rgba(197, 154, 66, 0.12), transparent 62%),
    var(--paper);
}

.portfolio-hero__lead,
.portfolio-hero__stats i,
.filter-count,
.work-card__meta,
.work-modal__nav span {
  color: var(--muted-dark);
}

.portfolio-hero__marquee {
  background: rgba(248, 245, 237, 0.94);
  border-top-color: var(--line-dark);
}

.portfolio-hero__track span {
  color: var(--muted-dark);
}

.filter-btn {
  color: var(--muted-dark);
  border-color: var(--line-dark);
}

.filter-btn.is-active {
  color: var(--paper);
}

.work-card__media {
  background: var(--paper-2);
  border-color: var(--line-dark);
}

.work-card__title {
  color: var(--ink);
}

.work-modal__backdrop {
  background: rgba(41, 51, 47, 0.58);
}

.work-modal__panel {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--line-dark);
}

.work-modal__close,
.work-modal__nav button {
  background: rgba(248, 245, 237, 0.92);
  color: var(--ink);
  border-color: var(--line-dark);
}

.work-modal__media {
  background: var(--paper-2);
}

.work-modal__media video {
  background: var(--stage);
}

.work-modal__info p {
  color: var(--muted-dark);
}

.portfolio-cta {
  background:
    radial-gradient(60% 60% at 50% 0%, rgba(197, 154, 66, 0.11), transparent 62%),
    var(--paper-2);
  border-top-color: var(--line-dark);
}

/* ---------- Champagne gold and bright gallery palette ---------- */
.portfolio-hero {
  background:
    radial-gradient(60% 55% at 82% 12%, rgba(197, 154, 66, 0.12), transparent 62%),
    var(--paper);
}

.portfolio-hero__word {
  -webkit-text-stroke-color: rgba(41, 51, 47, 0.2);
}

.portfolio-hero__marquee {
  background: var(--paper-2);
}

.portfolio-hero__track span,
.portfolio-hero__stats i,
.portfolio-hero__lead,
.filter-count,
.work-modal__nav span,
.work-modal__info p {
  color: var(--muted-dark);
}

.portfolio-hero__track i,
.portfolio-hero__stats span,
.filter-count strong,
.work-card__tag {
  color: var(--brass-ink);
}

.portfolio-behind .eyebrow {
  color: var(--brass-2);
}

.filter-btn:hover,
.filter-btn.is-active,
.work-modal__nav button:hover {
  border-color: var(--brass);
}

.filter-btn.is-active {
  background: var(--brass);
  color: var(--stage);
}

.work-card__play {
  background: var(--brass);
  box-shadow: 0 12px 34px rgba(197, 154, 66, 0.34);
}

.work-modal__info .case-tag {
  background: rgba(197, 154, 66, 0.1);
  border-color: rgba(197, 154, 66, 0.34);
  color: var(--brass-ink);
}

.portfolio-grid .work-card__open:hover .work-card__title,
.work-modal__nav button:hover {
  color: var(--brass-ink);
}

.portfolio-cta {
  background:
    radial-gradient(60% 60% at 50% 0%, rgba(197, 154, 66, 0.11), transparent 62%),
    var(--paper-2);
}

.portfolio-cta a[href^="tel:"] {
  color: var(--brass);
}

.portfolio-filter {
  padding: clamp(46px, 7vw, 76px) 0 18px;
  background: var(--paper);
  color: var(--ink);
}

.portfolio-filter__heading {
  margin-bottom: 30px;
}

.portfolio-filter__heading h2 {
  color: var(--ink);
}

.portfolio-filter__heading > p:last-child {
  color: var(--muted-dark);
}

.portfolio-grid {
  padding-top: 24px;
  background: var(--paper);
  color: var(--ink);
}

.portfolio-behind__grid .work-card__meta {
  color: var(--muted-light);
}

.portfolio-behind__grid[hidden],
.portfolio-behind__empty[hidden] {
  display: none !important;
}

@media (max-width: 640px) {
  .portfolio-filter__heading {
    margin-bottom: 22px;
  }

  .portfolio-behind__head {
    margin-bottom: 26px;
  }
}