/* =========================================================
   IB PREMIUM ART – Main Stylesheet
   Design: Dark luxury construction theme
   ========================================================= */

/* ── Design Tokens ─────────────────────────────────────── */
:root {
  /* Colors */
  --clr-bg:          hsl(220, 18%, 7%);
  --clr-surface:     hsl(220, 16%, 11%);
  --clr-surface-2:   hsl(220, 14%, 16%);
  --clr-border:      hsl(220, 15%, 22%);
  --clr-orange:      hsl(18, 94%, 51%);
  --clr-orange-dark: hsl(12, 88%, 42%);
  --clr-orange-light:hsl(24, 98%, 61%);
  --clr-gold:        var(--clr-orange);
  --clr-gold-dark:   var(--clr-orange-dark);
  --clr-gold-light:  var(--clr-orange-light);
  --clr-text:        hsl(220, 20%, 92%);
  --clr-text-muted:  hsl(220, 12%, 60%);
  --clr-text-dim:    hsl(220, 10%, 40%);
  --clr-white:       #ffffff;
  --clr-overlay:     hsla(220, 25%, 4%, 0.65);

  /* Gradients */
  --grad-orange: linear-gradient(135deg, var(--clr-orange) 0%, var(--clr-orange-light) 50%, var(--clr-orange-dark) 100%);
  --grad-gold:   var(--grad-orange);
  --grad-card: linear-gradient(160deg, hsl(220, 18%, 14%) 0%, hsl(220, 15%, 10%) 100%);

  /* Typography */
  --font-display: 'Outfit', sans-serif;
  --font-body:    'Inter', sans-serif;

  /* Spacing */
  --space-xs:   0.375rem;
  --space-sm:   0.75rem;
  --space-md:   1.25rem;
  --space-lg:   2rem;
  --space-xl:   3.5rem;
  --space-2xl:  5rem;
  --space-3xl:  8rem;

  /* Radius */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 2px 8px hsla(0,0%,0%,0.3);
  --shadow-md:  0 8px 24px hsla(0,0%,0%,0.4);
  --shadow-lg:  0 20px 60px hsla(0,0%,0%,0.5);
  --shadow-orange: 0 0 40px hsla(18,94%,51%,0.24);
  --shadow-gold:   var(--shadow-orange);

  /* Transitions */
  --ease:    cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 200ms;
  --dur-med:  350ms;
  --dur-slow: 600ms;
}

/* ── Reset & Base ───────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ── Utility ───────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 4rem);
}

.section-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-bottom: var(--space-md);
  position: relative;
  padding-left: 2.5rem;
}
.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1.75rem;
  height: 2px;
  background: var(--grad-gold);
  border-radius: var(--radius-full);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--clr-white);
  margin-bottom: var(--space-md);
}
.section-title.centered {
  text-align: center;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  max-width: 600px;
  margin-bottom: var(--space-xl);
}
.section-sub.centered {
  text-align: center;
  margin-inline: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-full);
  transition: all var(--dur-med) var(--ease);
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--grad-gold);
  color: #ffffff;
  font-weight: 700;
  box-shadow: var(--shadow-gold);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 50px hsla(18,94%,51%,0.45);
  filter: brightness(1.05);
}

.btn-ghost {
  background: hsla(255, 100%, 100%, 0.08);
  color: var(--clr-white);
  border: 1px solid hsla(255, 100%, 100%, 0.15);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: hsla(255, 100%, 100%, 0.14);
  border-color: hsla(255, 100%, 100%, 0.3);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--clr-gold);
  border: 2px solid var(--clr-gold);
}
.btn-outline:hover {
  background: var(--clr-gold);
  color: hsl(30, 60%, 10%);
  transform: translateY(-2px);
}

/* ── Navbar ────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  padding: 1rem 0;
  transition: background var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease), padding var(--dur-med) var(--ease);
}
.navbar.scrolled {
  background: hsla(220, 18%, 7%, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--clr-border), var(--shadow-sm);
  padding: 0.6rem 0;
}

.nav-inner {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 4rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}
.logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
}
.logo-text {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-white);
  letter-spacing: 0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-link {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: color var(--dur-fast) var(--ease);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--grad-gold);
  border-radius: var(--radius-full);
  transition: width var(--dur-med) var(--ease);
}
.nav-link:hover,
.nav-link.active {
  color: var(--clr-white);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: hsla(255, 100%, 100%, 0.07);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  padding: 0.45rem 1rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  transition: all var(--dur-fast) var(--ease);
  letter-spacing: 0.05em;
}
.lang-btn:hover {
  color: var(--clr-white);
  border-color: var(--clr-gold);
  background: hsla(18, 94%, 51%, 0.08);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-white);
  border-radius: var(--radius-full);
  transition: transform var(--dur-med) var(--ease), opacity var(--dur-fast) var(--ease);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero Section ──────────────────────────────────────── */
.hero {
  position: relative;
  height: 100svh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-parallax {
  position: absolute;
  inset: -20%;
  will-change: transform;
}

.hero-bg {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transform-origin: center center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    hsla(220, 25%, 6%, 0.3) 0%,
    hsla(220, 25%, 5%, 0.55) 40%,
    hsla(220, 25%, 4%, 0.8) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  animation: heroFadeUp 1s var(--ease-out) both;
}

@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-tagline {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--clr-gold);
  padding: 0.4rem 1.2rem;
  border: 1px solid hsla(18, 94%, 51%, 0.4);
  border-radius: var(--radius-full);
  background: hsla(18, 94%, 51%, 0.07);
  backdrop-filter: blur(6px);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--clr-white);
  text-shadow: 0 4px 30px hsla(0,0%,0%,0.5);
}

.hero-accent {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: hsla(220, 20%, 85%, 0.85);
  max-width: 560px;
  text-shadow: 0 2px 12px hsla(0,0%,0%,0.5);
}

.hero-cta-group {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.scroll-dot {
  width: 28px;
  height: 44px;
  border: 2px solid hsla(255, 100%, 100%, 0.4);
  border-radius: var(--radius-full);
  position: relative;
  animation: scrollPulse 2s ease-in-out infinite;
}
.scroll-dot::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--clr-gold);
  border-radius: var(--radius-full);
  animation: scrollBounce 2s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  80%       { transform: translateX(-50%) translateY(14px); opacity: 0; }
}
@keyframes scrollPulse {
  0%, 100% { border-color: hsla(255,100%,100%,0.4); }
  50%       { border-color: hsla(18, 94%, 51%, 0.7); }
}

/* ── About Section ─────────────────────────────────────── */
.about {
  padding: var(--space-3xl) 0;
  position: relative;
}
.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--clr-border), transparent);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
}

.about-desc {
  color: var(--clr-text-muted);
  font-size: 1rem;
  margin-bottom: 1rem;
  line-height: 1.75;
}

.about-stats {
  display: flex;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--clr-border);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.stat-num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.stat-lbl {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  font-weight: 500;
}

.about-images {
  position: relative;
  aspect-ratio: 1 / 1.05;
}
.about-img-main {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-img-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease);
}
.about-img-main:hover img {
  transform: scale(1.04);
}

.about-img-secondary {
  position: absolute;
  width: 55%;
  bottom: -2rem;
  left: -2rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 3px solid var(--clr-bg);
  aspect-ratio: 4 / 3;
}
.about-img-secondary img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease);
}
.about-img-secondary:hover img {
  transform: scale(1.05);
}

.about-badge {
  position: absolute;
  top: 1.5rem;
  right: -1.5rem;
  background: var(--grad-gold);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  text-align: center;
  box-shadow: var(--shadow-gold), var(--shadow-md);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.badge-year {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: hsl(30, 60%, 10%);
  line-height: 1;
}
.badge-text {
  font-size: 0.7rem;
  font-weight: 700;
  color: hsl(30, 60%, 20%);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ── Brands Strip ──────────────────────────────────────── */
.brands {
  padding: var(--space-xl) 0;
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
  overflow: hidden;
}
.brands-title {
  text-align: center;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-text-dim);
  margin-bottom: var(--space-lg);
}

.brands-track {
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.brands-slide {
  display: flex;
  gap: 2rem;
  animation: brandScroll 20s linear infinite;
  width: max-content;
}

@keyframes brandScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.brand-pill {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text-dim);
  padding: 0.6rem 1.8rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: all var(--dur-med) var(--ease);
  background: var(--clr-surface-2);
  letter-spacing: 0.05em;
}
.brand-pill:hover {
  color: var(--clr-gold);
  border-color: var(--clr-gold);
  background: hsla(18, 94%, 51%, 0.06);
}

/* ── Services Section ──────────────────────────────────── */
.services {
  padding: var(--space-3xl) 0;
  position: relative;
}
.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--clr-border), transparent);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.service-card {
  background: var(--grad-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md) var(--space-lg);
  transition: transform var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-gold);
  opacity: 0;
  transition: opacity var(--dur-med) var(--ease);
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: hsla(18, 94%, 51%, 0.3);
  box-shadow: var(--shadow-gold), var(--shadow-md);
}
.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 52px;
  height: 52px;
  color: var(--clr-gold);
  margin-bottom: var(--space-md);
  background: hsla(18, 94%, 51%, 0.07);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  border: 1px solid hsla(40, 90%, 58%, 0.15);
}
.service-icon svg { width: 100%; height: 100%; }

.service-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: 0.75rem;
}

.service-desc {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.service-list li {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  padding-left: 1.2rem;
  position: relative;
}
.service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  background: var(--clr-gold);
  border-radius: 50%;
}

/* ── Gallery Section ───────────────────────────────────── */
.gallery-section {
  padding: var(--space-3xl) 0;
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
}

.gallery-filters {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.filter-btn {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-full);
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  transition: all var(--dur-fast) var(--ease);
}
.filter-btn:hover {
  color: var(--clr-white);
  border-color: var(--clr-text-dim);
}
.filter-btn.active {
  background: var(--grad-gold);
  color: hsl(30, 60%, 10%);
  border-color: transparent;
  box-shadow: var(--shadow-gold);
}

/* ── Project Cards (Gallery) ──────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  grid-auto-rows: 250px;
  gap: 1rem;
  grid-auto-flow: dense; /* fill holes left by wide/tall cards */
}

.proj-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  /* height comes from the grid rows — no aspect-ratio needed */
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  transition: transform var(--dur-med) var(--ease),
              box-shadow var(--dur-med) var(--ease),
              border-color var(--dur-med) var(--ease);
}
.proj-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 50px hsla(0,0%,0%,0.55);
  border-color: hsla(18, 94%, 51%, 0.3);
}
.proj-card.hidden {
  display: none;
}
.proj-card--featured {
  grid-column: span 2;
  grid-row: span 2; /* fills a 2×2 square so no gap on the right */
}

/* Image */
.proj-img-wrap {
  position: absolute;
  inset: 0;
}
.proj-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}
.proj-card:hover .proj-img {
  transform: scale(1.05);
}
.proj-img.img-fade {
  animation: imgCycleIn 0.25s ease forwards;
}
@keyframes imgCycleIn {
  from { opacity: 0.4; }
  to   { opacity: 1; }
}

/* Image count badge (top-right) */
.proj-count-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: hsla(220, 25%, 4%, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid hsla(255,100%,100%,0.12);
  border-radius: var(--radius-full);
  padding: 0.25rem 0.65rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  display: flex;
  align-items: center;
  gap: 0.3rem;
  z-index: 3;
}
.proj-count-badge svg {
  width: 11px; height: 11px;
  flex-shrink: 0;
  color: var(--clr-gold);
}

/* Overlay (visible on hover) */
.proj-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top,
    hsla(220,25%,4%,0.92) 0%,
    hsla(220,25%,4%,0.3)  50%,
    transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1rem;
  opacity: 0;
  transition: opacity var(--dur-med) var(--ease);
  z-index: 2;
}
.proj-card:hover .proj-overlay {
  opacity: 1;
}

/* Progress dots row */
.proj-dots-row {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}
.proj-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: hsla(255,100%,100%,0.3);
  flex-shrink: 0;
  transition: all 0.2s ease;
}
.proj-dot.active {
  background: var(--clr-gold);
  width: 20px;
  border-radius: 4px;
  box-shadow: 0 0 8px hsla(18, 94%, 51%, 0.6);
}

/* Meta row (label + expand) */
.proj-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.proj-label-text {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--clr-white);
  line-height: 1.2;
}
.proj-count-text {
  font-size: 0.72rem;
  color: var(--clr-text-muted);
  white-space: nowrap;
}

/* Expand button */
.proj-expand-btn {
  width: 36px;
  height: 36px;
  background: var(--clr-gold);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  flex-shrink: 0;
  transform: scale(0.75);
  opacity: 0;
  transition: transform var(--dur-med) var(--ease-out), opacity var(--dur-med) var(--ease),
              box-shadow var(--dur-fast) var(--ease);
}
.proj-expand-btn svg { width: 16px; height: 16px; }
.proj-card:hover .proj-expand-btn {
  opacity: 1;
  transform: scale(1);
}
.proj-expand-btn:hover {
  box-shadow: 0 0 20px hsla(40,90%,58%,0.5);
}

.gallery-more {
  display: flex;
  justify-content: center;
  margin-top: var(--space-xl);
}

/* ── Lightbox ──────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: hsla(220, 25%, 4%, 0.97);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: 1rem 1rem 6rem;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  animation: lbFadeIn 0.25s var(--ease-out);
}
.lightbox[hidden] { display: none; }
@keyframes lbFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Close button */
.lightbox-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 44px;
  height: 44px;
  background: var(--clr-surface-2);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-text-muted);
  transition: all var(--dur-fast) var(--ease);
  border: 1px solid var(--clr-border);
  z-index: 5;
}
.lightbox-close svg { width: 20px; height: 20px; }
.lightbox-close:hover { background: var(--clr-gold); color: #ffffff; border-color: transparent; }

/* Prev / Next */
.lightbox-prev,
.lightbox-next {
  width: 50px;
  height: 50px;
  background: hsla(220,18%,14%,0.85);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-text-muted);
  flex-shrink: 0;
  transition: all var(--dur-fast) var(--ease);
  border: 1px solid var(--clr-border);
  backdrop-filter: blur(6px);
}
.lightbox-prev svg, .lightbox-next svg { width: 22px; height: 22px; }
.lightbox-prev:hover, .lightbox-next:hover {
  background: var(--clr-gold);
  color: hsl(30,60%,10%);
  border-color: transparent;
}

/* Stage */
.lightbox-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: calc(100vw - 160px);
  max-height: calc(100svh - 8rem);
  overflow: hidden;
}

.lightbox-img {
  max-width: 100%;
  max-height: calc(100svh - 10rem);
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}
.lightbox-img.lb-img-anim {
  animation: lbImgIn 0.28s var(--ease-out);
}
@keyframes lbImgIn {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}

/* Footer: caption + dots + progress */
.lightbox-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 1.5rem 0.5rem;
  background: linear-gradient(to top, hsla(220,25%,4%,0.85) 0%, transparent 100%);
  pointer-events: none;
}
.lightbox-footer > * { pointer-events: auto; }

.lightbox-caption {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  letter-spacing: 0.05em;
  text-align: center;
}

/* Dots */
.lightbox-dots {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
  max-width: min(90vw, 600px);
  overflow: hidden;
  max-height: 28px;
}
.lb-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: hsla(255,100%,100%,0.25);
  border: none;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.2s ease;
  padding: 0;
}
.lb-dot:hover:not(.active) {
  background: hsla(255,100%,100%,0.5);
  transform: scale(1.2);
}
.lb-dot.active {
  background: var(--clr-gold);
  width: 24px;
  border-radius: 4px;
  box-shadow: 0 0 10px hsla(18, 94%, 51%, 0.5);
}

/* Auto-play progress bar */
.lb-progress-wrap {
  width: 100%;
  max-width: 320px;
  height: 3px;
  background: hsla(255,100%,100%,0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.lb-progress-bar {
  height: 100%;
  background: var(--grad-gold);
  border-radius: var(--radius-full);
  width: 0;
}
.lb-progress-bar.running {
  animation: lbProgress 3s linear forwards;
}
@keyframes lbProgress {
  from { width: 0%; }
  to   { width: 100%; }
}

/* ── Contact Section ───────────────────────────────────── */
.contact {
  padding: var(--space-3xl) 0;
  position: relative;
}
.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--clr-border), transparent);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-card {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
  background: var(--grad-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: border-color var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease);
}
.contact-card:hover {
  border-color: hsla(18, 94%, 51%, 0.25);
  box-shadow: var(--shadow-gold);
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: hsla(18, 94%, 51%, 0.08);
  border-radius: var(--radius-sm);
  border: 1px solid hsla(18, 94%, 51%, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--clr-gold);
}
.contact-icon svg { width: 20px; height: 20px; }

.contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-dim);
  margin-bottom: 0.35rem;
}
.contact-value {
  font-size: 0.95rem;
  color: var(--clr-text);
  transition: color var(--dur-fast) var(--ease);
  line-height: 1.5;
}
.contact-value:hover {
  color: var(--clr-gold);
}

.social-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.25rem;
}
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--clr-border);
  background: var(--clr-surface-2);
  transition: all var(--dur-fast) var(--ease);
}
.social-link svg { width: 16px; height: 16px; flex-shrink: 0; }
.social-link:hover {
  color: var(--clr-gold);
  border-color: var(--clr-gold);
  background: hsla(18, 94%, 51%, 0.06);
}

.contact-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  box-shadow: var(--shadow-md);
}
.map-wrap {
  height: 450px;
}
.map-wrap iframe {
  filter: grayscale(80%) invert(1) brightness(0.85) contrast(1.1) hue-rotate(185deg);
  transition: filter var(--dur-med) var(--ease);
}
.map-wrap:hover iframe {
  filter: grayscale(20%) brightness(0.95);
}

/* ── Footer ─────────────────────────────────────────────── */
.footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.footer-logo {
  width: 64px;
  height: 64px;
  object-fit: contain;
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border);
  margin-bottom: var(--space-md);
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.5;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}
.footer-social-link {
  width: 40px;
  height: 40px;
  background: var(--clr-surface-2);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border);
  transition: all var(--dur-fast) var(--ease);
}
.footer-social-link svg { width: 18px; height: 18px; }
.footer-social-link:hover {
  background: var(--clr-gold);
  color: #ffffff;
  border-color: transparent;
  box-shadow: var(--shadow-gold);
}

.footer-heading {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-md);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.footer-links a,
.footer-links span {
  font-size: 0.875rem;
  color: var(--clr-text-dim);
  transition: color var(--dur-fast) var(--ease);
  line-height: 1.5;
}
.footer-links a:hover {
  color: var(--clr-gold);
}

.footer-bottom {
  border-top: 1px solid var(--clr-border);
  padding-top: var(--space-lg);
  text-align: center;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: var(--clr-text-dim);
}

/* ── Entrance Animations (IntersectionObserver) ────────── */
.animate-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── FAQ Section ────────────────────────────────────────── */
.faq {
  padding: var(--space-3xl) 0;
  background: linear-gradient(180deg, var(--clr-bg) 0%, var(--clr-surface) 50%, var(--clr-bg) 100%);
  position: relative;
}

.faq-grid {
  max-width: 920px;
  margin: var(--space-xl) auto 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.faq-item {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}

.faq-item:hover {
  border-color: hsla(18, 94%, 51%, 0.4);
  box-shadow: var(--shadow-sm);
}

.faq-item[open] {
  border-color: var(--clr-gold);
  box-shadow: var(--shadow-gold);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--clr-text);
  text-align: left;
  cursor: pointer;
  user-select: none;
  background: transparent;
  border: none;
  list-style: none;
}

.faq-question::-webkit-details-marker,
.faq-question::marker {
  display: none;
}

.faq-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  color: var(--clr-gold);
  transition: transform var(--dur-fast) var(--ease);
  margin-left: 1rem;
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.5rem 1.35rem 1.5rem;
  font-size: 0.975rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

/* ── Reduced Motion ─────────────────────────────────────── */
@property --animation-reduced {
  syntax: "*";
  inherits: false;
  initial-value: none;
}
@media (prefers-reduced-motion: reduce) {
  * { animation: var(--animation-reduced) !important; }
  html { scroll-behavior: auto; }
  .hero-parallax { transform: none !important; }
  .animate-in {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 1100px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  .about-images {
    aspect-ratio: 16 / 10;
    order: -1;
    max-height: 400px;
  }
  .about-img-secondary {
    width: 45%;
    left: -1rem;
    bottom: -1rem;
  }
  .about-badge {
    right: -0.5rem;
    top: 1rem;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .map-wrap {
    height: 320px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: hsla(220, 18%, 7%, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--clr-border);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    align-items: flex-start;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-toggle {
    display: flex;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 200px;
  }
  .proj-card--featured {
    grid-column: span 2;
    grid-row: span 2;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  .about-stats {
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .hero-cta-group {
    flex-direction: column;
    align-items: center;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 220px;
  }
  .proj-card--featured {
    grid-column: span 1;
    grid-row: span 1; /* single column — no special spanning */
  }
  .lightbox-prev, .lightbox-next {
    width: 38px;
    height: 38px;
  }
  .lightbox-stage {
    max-width: calc(100vw - 96px);
  }
  .about-img-secondary {
    display: none;
  }
  .about-badge {
    right: 0.5rem;
  }
}