/* ============================================
   Fushi Foto — Style Guide
   Tối giản, sang trọng | Serif + Sans
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Jost:wght@300;400;500;600&display=swap');

:root {
  --bg: #FAF7F2;
  --bg-alt: #F1ECE3;
  --ink: #1C1B19;
  --ink-soft: #6B6560;
  --line: #E4DDD1;
  --accent: #A87C4F;
  --white: #FFFFFF;
  --black: #121110;

  --serif: 'Jost', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --sans: 'Jost', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --maxw: 1200px;
  --gap: clamp(1rem, 2vw, 2rem);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: 0.01em;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}

.eyebrow {
  font-family: var(--sans);
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem clamp(1.25rem, 4vw, 3rem);
  max-width: var(--maxw);
  margin: 0 auto;
}

.logo {
  font-family: var(--serif);
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}

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

.nav-links {
  display: flex;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: center;
}

.nav-links a {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 4px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-links a.active { color: var(--accent); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 22px; height: 1px; background: var(--ink);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 56vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-media img,
.hero-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(18,17,16,0.38);
}

.hero-content {
  position: relative;
  z-index: 1;
  color: var(--white);
  padding: 3rem clamp(1.25rem, 4vw, 3rem);
  max-width: var(--maxw);
  margin: 0 auto;
  width: 100%;
}

.hero-content .eyebrow { color: #E8C89A; margin-bottom: 0.75rem; display: block; }

.hero-content h1 {
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  max-width: 18ch;
  font-weight: 500;
}

.hero-content p {
  margin-top: 1rem;
  max-width: 46ch;
  font-size: 1rem;
  color: #EDE8DF;
}

/* Small page hero (inner pages) */
.page-hero {
  padding: 7rem 0 3rem;
  border-bottom: 1px solid var(--line);
}
.page-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  
  margin-top: 0.75rem;
}
.page-hero p {
  margin-top: 1rem;
  max-width: 60ch;
  color: var(--ink-soft);
}

/* ---------- Sections ---------- */
section { padding: clamp(3rem, 7vw, 6rem) 0; }
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto clamp(2rem, 5vw, 3.5rem);
}
.section-head h2 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  margin-top: 0.75rem;
  
}
.section-head p { color: var(--ink-soft); margin-top: 1rem; }

.section-head.left { text-align: left; margin: 0 0 clamp(2rem, 5vw, 3rem); }

/* ---------- Intro / About blurb ---------- */
.intro {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
.intro img { border-radius: 2px; }
.intro h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem);  margin-bottom: 1.25rem; }
.intro p { color: var(--ink-soft); margin-bottom: 1rem; }

/* ---------- Services cards ---------- */
.services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
.service-card {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  border-radius: 2px;
  display: flex;
  align-items: flex-end;
}
.service-card img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s ease;
}
.service-card:hover img { transform: scale(1.06); }
.service-card::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(18,17,16,0) 40%, rgba(18,17,16,0.85) 100%);
}
.service-card-body {
  position: relative; z-index: 1;
  padding: 1.5rem;
  color: var(--white);
}
.service-card-body .eyebrow { color: #E8C89A; }
.service-card-body h3 { font-size: 1.4rem; margin-top: 0.4rem;  }
.service-card-body a {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(255,255,255,0.5);
}

/* ---------- Gallery grid ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.gallery-grid a {
  display: block;
  overflow: hidden;
  aspect-ratio: 3/4;
  border-radius: 2px;
  background: var(--bg-alt);
}
.gallery-grid img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s ease, filter 0.5s ease;
}
.gallery-grid a:hover img { transform: scale(1.05); }

/* Project group */
.project-group { margin-bottom: clamp(2.5rem, 6vw, 4rem); }
.project-group-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
}
.project-group-head h3 {
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  
}
.project-group-head span {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ---------- Featured strip (home) ---------- */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 220px;
  gap: 10px;
}
.featured-grid a { overflow: hidden; border-radius: 2px; }
.featured-grid a:nth-child(4n+1) { grid-row: span 2; }
.featured-grid img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.featured-grid a:hover img { transform: scale(1.05); }

/* ---------- Showcase (click-to-preview project gallery) ---------- */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
}
.showcase-card {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
  border-radius: 2px;
  border: none;
  padding: 0;
  margin: 0;
  background: var(--bg-alt);
  cursor: pointer;
  display: block;
  width: 100%;
  text-align: left;
  font-family: inherit;
}
.showcase-card img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s ease;
}
.showcase-card:hover img { transform: scale(1.06); }
.showcase-card::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(18,17,16,0) 45%, rgba(18,17,16,0.85) 100%);
}
.showcase-card-body {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 1;
  padding: 1rem 1.1rem;
  color: var(--white);
}
.showcase-card-body .eyebrow { color: #E8C89A; font-size: 0.68rem; }
.showcase-card-body h3 { font-size: 1.05rem; margin-top: 0.25rem; font-weight: 500; }
.showcase-count {
  position: absolute; top: 0.7rem; right: 0.7rem; z-index: 1;
  background: rgba(0,0,0,0.55); color: #fff; font-size: 0.68rem;
  padding: 0.2rem 0.55rem; border-radius: 20px; letter-spacing: 0.03em;
}

.project-modal-inner { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; max-width: 90vw; }
.project-modal-inner img { max-width: 90vw; max-height: 78vh; object-fit: contain; border-radius: 2px; }
.project-modal-meta { color: #fff; text-align: center; }
.project-modal-title { display: block; font-size: 1rem; letter-spacing: 0.02em; }
.project-modal-count { display: block; color: #B9B2A5; margin-top: 0.25rem; font-size: 0.8rem; }

/* ---------- Behind the Works video ---------- */
.behind-works-video {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: 2px;
  background: var(--black);
}
.behind-works-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  cursor: pointer;
}
.video-mute-toggle {
  position: absolute;
  bottom: 1rem; right: 1rem;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: rgba(18,17,16,0.55);
  color: var(--white);
  border: none;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s ease;
}
.video-mute-toggle:hover { background: rgba(18,17,16,0.8); }

/* ---------- Quote / CTA band ---------- */
.cta-band {
  background: var(--black);
  color: var(--white);
  text-align: center;
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}
.cta-band .eyebrow { color: #E8C89A; }
.cta-band h2 { font-size: clamp(1.8rem, 4vw, 2.6rem);  margin: 0.75rem 0 1.75rem; max-width: 24ch; margin-left: auto; margin-right: auto; }

.quick-contact { margin-top: 2.25rem; max-width: 680px; margin-left: auto; margin-right: auto; }
.quick-contact-label { font-size: 0.85rem; color: #B9B2A5; margin-bottom: 1rem; }
.quick-contact-form { display: flex; gap: 0.7rem; flex-wrap: wrap; justify-content: center; }
.quick-contact-form input {
  flex: 1 1 170px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.25);
  color: var(--white);
  padding: 0.7rem 0.9rem;
  font-family: var(--sans);
  font-size: 0.9rem;
  border-radius: 1px;
  outline: none;
  text-align: center;
  transition: border-color 0.3s ease;
}
.quick-contact-form input::placeholder { color: #8A8478; text-align: center; }
.quick-contact-form input:focus { border-color: var(--accent); }
.quick-contact-form button { flex: 0 0 auto; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 2rem;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--white);
  font-family: var(--sans);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: background 0.3s ease, color 0.3s ease;
  border-radius: 1px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
}
.btn:hover { background: var(--accent); }
.btn svg { flex-shrink: 0; width: 18px; height: 18px; }

.btn-dark {
  border-color: var(--ink);
  color: var(--ink);
}
.btn-dark:hover { background: var(--ink); color: var(--white); }

/* ---------- Dropdown ---------- */
.dropdown { position: relative; display: inline-block; }
.dropdown-menu {
  position: absolute;
  top: 100%; left: 50%;
  margin-top: 0.5rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 2px;
  min-width: 200px;
  box-shadow: 0 12px 28px rgba(18,17,16,0.1);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 20;
  text-align: left;
}
.dropdown-menu.open { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.dropdown-menu a {
  display: block;
  padding: 0.8rem 1.25rem;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}
.dropdown-menu a:last-child { border-bottom: none; }
.dropdown-menu a:hover { background: var(--bg-alt); color: var(--accent); }

/* ---------- Team ---------- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
.team-card img {
  aspect-ratio: 4/5;
  object-fit: cover;
  width: 100%;
  border-radius: 2px;
  filter: grayscale(15%);
}
.team-card h4 { margin-top: 1rem; font-size: 1.2rem;  }
.team-card p { color: var(--ink-soft); font-size: 0.9rem; margin-top: 0.2rem; }

/* ---------- Values list (about) ---------- */
.values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  margin-top: 2rem;
}
.value-item { border-top: 1px solid var(--line); padding-top: 1.25rem; }
.value-item .num { font-family: var(--serif);  color: var(--accent); font-size: 1.3rem; }
.value-item h4 { margin-top: 0.5rem; font-size: 1.1rem; }
.value-item p { color: var(--ink-soft); font-size: 0.9rem; margin-top: 0.4rem; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(2rem, 6vw, 5rem);
}
.contact-info h2 { font-size: clamp(1.9rem, 4vw, 2.6rem);  margin-bottom: 1rem; }
.contact-info p { color: var(--ink-soft); margin-bottom: 2rem; }
.contact-line {
  display: block;
  font-family: var(--serif);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}
.social-row { display: flex; gap: 1.25rem; margin-top: 2rem; }
.social-row a {
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  font-size: 0.85rem;
}
.social-row a:hover { background: var(--ink); color: var(--white); border-color: var(--ink); }

.form-group { margin-bottom: 1.4rem; }
.form-group label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.5rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--line);
  background: transparent;
  padding: 0.6rem 0.1rem;
  font-family: var(--sans);
  font-size: 1rem;
  color: var(--ink);
  outline: none;
  transition: border-color 0.3s ease;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent); }
.form-group textarea { resize: vertical; min-height: 110px; }

.form-note { font-size: 0.8rem; color: var(--ink-soft); margin-top: 0.75rem; }

/* ---------- Footer ---------- */
footer {
  background: var(--black);
  color: #C9C3B8;
  padding: 3.5rem 0 2rem;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  padding-bottom: 2.25rem;
  margin-bottom: 1.5rem;
}
.footer-logo { font-family: var(--serif); font-size: 1.4rem; color: var(--white); }
.footer-logo span { color: var(--accent); }
.footer-cols { display: flex; gap: clamp(2rem, 6vw, 5rem); flex-wrap: wrap; }
.footer-col h5 {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #918B80;
  margin-bottom: 0.9rem;
}
.footer-col a, .footer-col span { display: block; font-size: 0.9rem; margin-bottom: 0.6rem; color: #DAD5C9; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #6E695F;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0;
  background: rgba(18,17,16,0.94);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 2rem;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 90vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 2px;
}
.lightbox-close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  color: var(--white);
  font-size: 1.6rem;
  background: none;
  border: none;
  cursor: pointer;
}
.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--white);
  font-size: 2rem;
  cursor: pointer;
  padding: 1rem;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}
.lightbox-nav:hover { opacity: 1; }
.lightbox-prev { left: 0.5rem; }
.lightbox-next { right: 0.5rem; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .services { grid-template-columns: repeat(2, 1fr); }
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .featured-grid { grid-template-columns: repeat(3, 1fr); grid-auto-rows: 180px; }
  .intro { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(3, 1fr); gap: 1rem; }
  .values { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .nav-links {
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem clamp(1.25rem, 4vw, 3rem) 2rem;
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .services { grid-template-columns: 1fr; }
  .showcase-grid { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 160px; }
  .featured-grid a:nth-child(4n+1) { grid-row: span 1; }
  .team-grid { grid-template-columns: 1fr 1fr; }
  .values { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; }
}