/* ========================================
   project-detail.css — 项目详情页专属样式
   适用：单项目展示页（如 Houston Vietnamese Restaurant）
   风格：深色调、editorial 排版、大图沉浸感
   ======================================== */

/* ===== Hero ===== */
.project-hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  color: #fff;
}

.project-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.project-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.55);
}

.project-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    0deg,
    rgba(10, 8, 6, 0.85) 0%,
    rgba(10, 8, 6, 0.4) 40%,
    rgba(10, 8, 6, 0.15) 70%,
    transparent 100%
  );
  z-index: 1;
}

.project-hero__content {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
  padding-block-end: calc(var(--space-2xl) + 40px);
  width: 100%;
}

.project-hero__eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--color-accent);
  margin-block-end: var(--space-md);
}

.project-hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 400;
  line-height: 1.05;
  color: #fff;
  margin-block-end: var(--space-md);
}

.project-hero__location {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 0.05em;
}

/* Scroll indicator */
.project-hero__scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: color var(--transition-base);
}

.project-hero__scroll:hover {
  color: rgba(255, 255, 255, 0.9);
}

.project-hero__scroll-text {
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.25em;
}

.project-hero__scroll-line {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, currentColor, transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@media (max-width: 767px) {
  .project-hero__scroll {
    display: none;
  }
}

/* ===== Overview ===== */
.project-overview {
  background-color: var(--color-bg);
  padding-block: var(--space-2xl);
}

.project-overview__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: start;
}

@media (min-width: 992px) {
  .project-overview__grid {
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-2xl);
  }
}

.project-overview__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-block-end: var(--space-md);
}

.project-overview__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  line-height: 1.15;
  margin-block-end: var(--space-lg);
  color: var(--color-text);
}

.project-overview__text {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text-light);
  margin-block-end: var(--space-lg);
}

.project-overview__text:last-of-type {
  margin-block-end: var(--space-xl);
}

.project-overview__back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Stats grid */
.project-overview__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  padding: var(--space-xl);
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-lg);
}

@media (min-width: 576px) {
  .project-overview__stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 992px) {
  .project-overview__stats {
    grid-template-columns: repeat(2, 1fr);
    position: sticky;
    top: calc(var(--header-height) + var(--space-lg));
  }
}

.project-stat {
  text-align: center;
}

.project-stat__number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--color-primary);
  line-height: 1;
  margin-block-end: var(--space-xs);
}

.project-stat__label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-light);
}

/* ===== Gallery ===== */
.project-gallery {
  background-color: var(--color-bg-alt);
  padding-block: var(--space-2xl);
}

.project-gallery__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .project-gallery__grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto auto;
  }

  .project-gallery__item--large {
    grid-column: span 2;
  }

  .project-gallery__item--wide {
    grid-column: span 2;
  }
}

@media (min-width: 992px) {
  .project-gallery__grid {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: auto auto;
  }

  .project-gallery__item--large {
    grid-column: span 2;
    grid-row: span 2;
  }

  .project-gallery__item--wide {
    grid-column: span 2;
  }
}

.project-gallery__item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 0;
}

.project-gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.project-gallery__item:hover img {
  transform: scale(1.03);
}

/* ===== Design Concept ===== */
.project-concept {
  background-color: var(--color-bg);
  padding-block: var(--space-2xl);
}

.project-concept__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 992px) {
  .project-concept__layout {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }
}

.project-concept__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.project-concept__image img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  display: block;
}

.project-concept__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-block-end: var(--space-md);
}

.project-concept__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  line-height: 1.2;
  margin-block-end: var(--space-lg);
  color: var(--color-text);
}

.project-concept__text {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-light);
  margin-block-end: var(--space-lg);
}

/* Features */
.project-concept__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-block-start: var(--space-xl);
  padding-block-start: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.project-feature__title {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  color: var(--color-text);
  margin-block-end: var(--space-xs);
}

.project-feature__desc {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== CTA ===== */
.project-cta {
  background: linear-gradient(135deg, #1a1410 0%, #2d1f14 50%, var(--color-primary-dark) 100%);
  color: #fff;
  text-align: center;
  padding-block: var(--space-2xl);
}

.project-cta__title {
  color: #fff;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  margin-block-end: var(--space-md);
}

.project-cta__subtitle {
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.0625rem;
  max-width: 520px;
  margin-inline: auto;
  margin-block-end: var(--space-xl);
  line-height: 1.7;
}