/* ==========================================================================
   Tess Priya Photography — Modern Luxury Editorial Theme
   Pixel-Accurate Replication of tesspriya.com Layout & Animations
   ========================================================================== */

:root {
  --bg-color: #000000;
  --bg-card: #111111;
  --bg-elevated: #1a1a1a;
  --text-primary: #ffffff;
  --text-secondary: #a3a3a3;
  --text-muted: #666666;
  --accent: #ffffff;
  --border-color: rgba(255, 255, 255, 0.15);
  --border-focus: rgba(255, 255, 255, 0.5);
  --font-display: 'Staatliches', sans-serif;
  --font-mono: 'Inconsolata', monospace;
  --font-heading: 'Raleway', sans-serif;
  --font-serif: 'Roboto Slab', serif;
  --font-body: 'Raleway', sans-serif;
  --header-height: 75px;
  --transition-fast: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
  background-color: var(--bg-color);
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: background-color var(--transition-fast), backdrop-filter var(--transition-fast), border-bottom var(--transition-fast);
  pointer-events: none;
}

.site-header .header-container {
  pointer-events: auto;
}

.site-header.scrolled {
  background-color: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.header-container {
  max-width: 1500px;
  margin: 0 auto;
  height: 100%;
  padding: 0 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  flex-direction: column;
  letter-spacing: 0.22em;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 400;
  line-height: 1;
  color: var(--text-primary);
}

.logo-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.35em;
  color: var(--text-secondary);
}

.main-nav {
  display: flex;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--text-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

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

.header-socials {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.header-socials a {
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.header-socials a:hover {
  color: var(--text-primary);
  transform: translateY(-2px);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 5px;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform var(--transition-fast);
}

/* ==========================================================================
   Hero Section & Draggable Carousel Track
   ========================================================================== */
.hero-section {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 680px;
  background-color: #000000;
  overflow: hidden;
}

.carousel-container {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

/* Horizontal Track for Smooth Mouse/Touch Dragging */
.carousel-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: grab;
  user-select: none;
  touch-action: pan-y;
  will-change: transform;
}

.carousel-track.is-dragging {
  transition: none !important;
  cursor: grabbing !important;
}

.carousel-slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
  background-color: #000000;
  user-select: none;
}

/* Center Photo Stage (Portrait Frame) */
.slide-center-stage {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  max-width: 580px;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 0 90px rgba(0, 0, 0, 0.95);
  pointer-events: none;
}

.slide-center-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.04);
  transition: transform 1.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.carousel-slide.active .slide-center-img {
  transform: scale(1);
}

/* ==========================================================================
   CENTER VERTICAL WORD: 10% SMALLER, NARROW TRACKING, ELASTIC REVEAL
   ========================================================================== */
.center-vertical-title {
  position: absolute;
  top: 60%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-90deg);
  transform-origin: center center;
  font-family: var(--font-display);
  font-size: clamp(2.7rem, 4.6vw, 4.3rem); /* 10% smaller */
  letter-spacing: 0.035em;                 /* Narrower letter separation */
  line-height: 1;
  color: #ffffff;
  white-space: nowrap;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.9);
  pointer-events: none;
  z-index: 25;
  clip-path: inset(0% 50% 0% 50%);
  opacity: 0;
}

/* Elastic fluid reveal keyframes */
.carousel-slide.active .center-vertical-title {
  animation: centerWordElasticReveal 1.9s cubic-bezier(0.16, 1, 0.3, 1) 0.12s forwards;
}

@keyframes centerWordElasticReveal {
  0% {
    clip-path: inset(0% 50% 0% 50%);
    opacity: 0;
    filter: blur(5px);
    transform: translate(-50%, -50%) rotate(-90deg) scale(0.88);
  }
  20% {
    opacity: 1;
    filter: blur(0);
  }
  75% {
    clip-path: inset(0% 0% 0% 0%);
    transform: translate(-50%, -50%) rotate(-90deg) scale(1.032);
  }
  88% {
    transform: translate(-50%, -50%) rotate(-90deg) scale(0.993);
  }
  100% {
    clip-path: inset(0% 0% 0% 0%);
    opacity: 1;
    transform: translate(-50%, -50%) rotate(-90deg) scale(1);
  }
}

/* Top Left Big Slide Number */
.slide-top-number {
  position: absolute;
  top: 100px;
  left: 60px;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 4.5vw, 4.2rem);
  line-height: 1;
  color: #ffffff;
  z-index: 20;
  opacity: 0;
  transform: translateY(-12px);
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.25s;
  pointer-events: none;
}

.carousel-slide.active .slide-top-number {
  opacity: 1;
  transform: translateY(0);
}

/* Bottom Left Description & View Button */
.slide-left-desc {
  position: absolute;
  bottom: 60px;
  left: 60px;
  z-index: 20;
  max-width: 320px;
  opacity: 0;
  transform: translateY(18px);
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.3s;
}

.carousel-slide.active .slide-left-desc {
  opacity: 1;
  transform: translateY(0);
}

.desc-lines {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.55;
  color: #ffffff;
  margin-bottom: 1.25rem;
  white-space: pre-line;
  opacity: 0.9;
  user-select: none;
}

/* Outline Rectangular Buttons */
.btn-outline-rect {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #ffffff;
  border: 1px solid #ffffff;
  padding: 0.45rem 1.5rem;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  text-align: center;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  user-select: none;
}

.btn-outline-rect:hover {
  background: #ffffff;
  color: #000000;
  transform: translateY(-2px);
}

/* Right Side Stacked Buttons */
.slide-right-actions {
  position: absolute;
  right: 60px;
  top: 55%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  z-index: 20;
  opacity: 0;
  transition: opacity 0.6s ease 0.35s;
}

.carousel-slide.active .slide-right-actions {
  opacity: 1;
}

/* Bottom Right Carousel Thumbnails Strip */
.carousel-thumbnail-bar {
  position: absolute;
  bottom: 35px;
  right: 60px;
  display: flex;
  gap: 0.5rem;
  z-index: 25;
  background: rgba(0, 0, 0, 0.65);
  padding: 6px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
}

.thumb-item {
  width: 50px;
  height: 36px;
  overflow: hidden;
  cursor: pointer;
  opacity: 0.4;
  border: 1px solid transparent;
  transition: all 0.25s ease;
}

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

.thumb-item:hover, .thumb-item.active {
  opacity: 1;
  border-color: #ffffff;
  transform: scale(1.08);
}

/* Progress bar */
.carousel-progress-container {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  z-index: 30;
}

.carousel-progress-bar {
  height: 100%;
  width: 0%;
  background: #ffffff;
  transition: width 0.05s linear;
}

/* ==========================================================================
   ABOUT SECTION: EXACT REPRODUCTION OF USER'S SCREENSHOT (WHITE BACKGROUND)
   ========================================================================== */
.about-section-exact {
  width: 100%;
  background-color: #ffffff;
  color: #000000;
  overflow: hidden;
  border-top: 1px solid #e0e0e0;
  border-bottom: 1px solid #e0e0e0;
}

.about-split-container {
  display: grid;
  grid-template-columns: 1fr 1.08fr;
  min-height: 80vh;
  width: 100%;
}

.about-split-image {
  width: 100%;
  height: 100%;
  min-height: 520px;
  background-color: #167a72; /* matches the teal backdrop */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.tess-portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: high-quality;
}

.about-split-content {
  background-color: #ffffff;
  padding: 5.5rem 4.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.about-exact-title {
  font-family: var(--font-heading);
  font-size: clamp(2.6rem, 4.5vw, 3.8rem);
  font-weight: 300;
  letter-spacing: 0.15em;
  color: #111111;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}

.about-text-body {
  max-width: 620px;
  display: flex;
  flex-direction: column;
  gap: 1.65rem;
  text-align: center;
}

.about-exact-para {
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 400;
  line-height: 1.8;
  color: #2b2b2b;
  margin: 0;
}

.about-availability-text {
  font-weight: 600;
  color: #000000;
  margin-top: 0.5rem;
}

/* ==========================================================================
   Portfolio Section
   ========================================================================== */
.portfolio-section {
  padding: 8rem 0;
  background-color: #080808;
}

.portfolio-header {
  text-align: center;
  margin-bottom: 4rem;
}

.portfolio-heading {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: 0.35em;
  margin-bottom: 1rem;
}

.portfolio-sub {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Filter Bar */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3.5rem;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  padding: 0.6rem 1.4rem;
  cursor: pointer;
  text-transform: uppercase;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

.filter-btn.active {
  background-color: #fff;
  color: #000;
  border-color: #fff;
  font-weight: 700;
}

/* Portfolio Grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 2rem;
}

.grid-item {
  position: relative;
  overflow: hidden;
  background-color: var(--bg-card);
  aspect-ratio: 3 / 4;
  cursor: pointer;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.grid-item.hidden {
  display: none;
}

.item-inner {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.grid-item:hover img {
  transform: scale(1.06);
}

.item-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.85) 0%,
    rgba(0, 0, 0, 0.2) 60%,
    transparent 100%
  );
  opacity: 0;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: opacity 0.4s ease;
}

.grid-item:hover .item-overlay {
  opacity: 1;
}

.item-category {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.item-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 600;
  color: #fff;
}

.item-zoom-icon {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  line-height: 1;
  transition: transform 0.3s ease, background 0.3s ease;
}

.grid-item:hover .item-zoom-icon {
  transform: scale(1.1);
  background: #fff;
  color: #000;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-section {
  padding: 8rem 0;
  background-color: var(--bg-color);
  border-top: 1px solid var(--border-color);
}

.contact-card {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 4.5rem;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  text-align: center;
}

.contact-heading {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.contact-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 3rem;
}

.contact-form {
  text-align: left;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-group {
  margin-bottom: 1.75rem;
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: #fff;
  padding: 1rem 1.25rem;
  font-family: inherit;
  font-size: 0.95rem;
  border-radius: 0;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  background: rgba(255, 255, 255, 0.06);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.btn-submit {
  width: 100%;
  background: #fff;
  color: #000;
  border: none;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 1.2rem 2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.btn-submit:hover {
  background: #e2e2e2;
  transform: translateY(-2px);
}

.contact-social-bar {
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-color);
}

.follow-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: block;
  margin-bottom: 1.25rem;
}

.social-links-row {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.social-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-pill:hover {
  color: #fff;
  border-color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  padding: 3rem 0;
  background: #040404;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-container {
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-right a:hover {
  color: #fff;
}

/* ==========================================================================
   Lightbox Modal
   ========================================================================== */
.lightbox-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(2, 2, 2, 0.96);
  backdrop-filter: blur(15px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lightbox-modal.open {
  opacity: 1;
  visibility: visible;
}

.lightbox-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.5rem;
  line-height: 1;
  cursor: pointer;
  z-index: 2010;
  transition: transform 0.2s;
}

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

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 2010;
  transition: background 0.2s, transform 0.2s;
}

.lightbox-nav:hover {
  background: #fff;
  color: #000;
  transform: translateY(-50%) scale(1.1);
}

.lightbox-prev {
  left: 2rem;
}

.lightbox-next {
  right: 2rem;
}

.lightbox-stage {
  max-width: 85vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.lightbox-img {
  max-width: 100%;
  max-height: 75vh;
  object-fit: contain;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.9);
  transition: transform 0.3s ease;
}

.lightbox-info {
  margin-top: 1.25rem;
  text-align: center;
}

.lightbox-project {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.lightbox-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: #fff;
  margin: 0.25rem 0;
}

.lightbox-counter {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Toast Notification
   ========================================================================== */
.toast-message {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #fff;
  color: #000;
  padding: 1rem 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  border-left: 4px solid #00e676;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  transform: translateY(100px);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
  z-index: 3000;
}

.toast-message.show {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .about-split-container {
    grid-template-columns: 1fr;
  }
  .about-split-image {
    min-height: 450px;
  }
  .about-split-content {
    padding: 4rem 2rem;
  }
  .slide-top-number {
    top: 90px;
    left: 30px;
  }
  .slide-left-desc {
    bottom: 40px;
    left: 30px;
  }
  .slide-right-actions {
    right: 30px;
  }
  .carousel-thumbnail-bar {
    right: 30px;
    bottom: 30px;
  }
  .portfolio-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
  .contact-card {
    padding: 3rem 2rem;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.98);
    backdrop-filter: blur(15px);
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-150%);
    transition: transform var(--transition-fast);
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  .slide-center-stage {
    max-width: 100vw;
  }

  .slide-top-number {
    top: 85px;
    left: 20px;
    font-size: 2.2rem;
  }

  .slide-left-desc {
    bottom: 80px;
    left: 20px;
    max-width: 250px;
  }

  .center-vertical-title {
    font-size: 2.4rem;
  }

  .slide-right-actions {
    right: 20px;
    top: auto;
    bottom: 160px;
    transform: none;
  }

  .carousel-thumbnail-bar {
    left: 20px;
    right: 20px;
    bottom: 20px;
    justify-content: center;
    overflow-x: auto;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-container {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .lightbox-nav {
    width: 44px;
    height: 44px;
  }

  .lightbox-prev {
    left: 1rem;
  }

  .lightbox-next {
    right: 1rem;
  }
}