/* ==========================================================================
   MAX｜Portfolio - Style Sheet (Gallery Light Minimalist Style)
   ========================================================================== */

/* Design Tokens & Custom Properties */
:root {
  --bg-color: #fcfcfc;
  --bg-alt: #f5f5f3;
  --text-primary: #1a1a1a;
  --text-secondary: #706f6c;
  --text-light: #9e9c97;
  --accent: #a88a6d;
  --accent-light: #e6dfd5;
  --border-color: rgba(26, 26, 26, 0.08);
  --card-bg: #ffffff;
  --shadow-sm: 0 4px 12px rgba(26, 26, 26, 0.03);
  --shadow-md: 0 12px 30px rgba(26, 26, 26, 0.06);
  --shadow-lg: 0 20px 50px rgba(26, 26, 26, 0.1);
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 24px;
  
  --font-zh: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-en: 'Outfit', sans-serif;
  
  --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-zh);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  
  /* Disable text selection */
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

img {
  -webkit-user-drag: none;
  user-drag: none;
}

/* Soft glowing light leaks background */
.glow-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  background: 
    radial-gradient(circle at 10% 20%, rgba(168, 138, 109, 0.03) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(168, 138, 109, 0.04) 0%, transparent 50%);
  filter: blur(80px);
  transition: transform 0.2s ease-out;
}

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

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

/* Container */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 4rem;
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(252, 252, 252, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-fast);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 1.3rem;
  letter-spacing: 0.1em;
}

.logo span {
  font-weight: 300;
  color: var(--text-secondary);
}

.nav-menu {
  display: flex;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

.nav-link .en {
  font-family: var(--font-en);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-light);
  margin-top: 2px;
  transition: var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: var(--transition-smooth);
}

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

.nav-link:hover .en {
  color: var(--accent);
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 5px 0;
  transition: var(--transition-fast);
}

/* Hero Section */
.hero {
  height: 100vh;
  min-height: 600px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  /* Pure CSS Gallery Ambient Background (Subtle Warm Gradient + Light Leak) */
  background: 
    radial-gradient(circle at 50% -20%, rgba(168, 138, 109, 0.08) 0%, transparent 60%),
    linear-gradient(to bottom, var(--bg-color) 0%, var(--bg-alt) 100%);
  padding: 0 2rem;
  text-align: center;
  overflow: hidden;
}

/* Elegant geometric grid overlay for designer canvas aesthetic */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(26, 26, 26, 0.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 26, 26, 0.012) 1px, transparent 1px);
  background-size: 60px 60px;
  background-position: center;
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1000px;
  margin-top: 4rem;
}

.hero-title {
  font-family: var(--font-en);
  font-size: 4.5rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 3.5rem;
  animation: fadeInDown 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-subtitle {
  display: block;
  font-family: var(--font-zh);
  font-size: 2.2rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  margin-top: 1rem;
  color: var(--text-secondary);
}

.hero-anchors {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  animation: fadeInUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both;
}

.anchor-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.2rem 2.2rem;
  background-color: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  min-width: 200px;
}

.anchor-btn .zh {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--text-primary);
}

.anchor-btn .en {
  font-family: var(--font-en);
  font-size: 0.75rem;
  color: var(--text-light);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.anchor-btn:hover {
  transform: translateY(-5px);
  background-color: var(--card-bg);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.anchor-btn:hover .zh {
  color: var(--accent);
}

.anchor-btn:hover .en {
  color: var(--text-secondary);
}

.hero-cert {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-light);
  letter-spacing: 0.15em;
  margin-top: 2.5rem;
  opacity: 0.8;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  animation: fadeInUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.6s both;
}

.hero-cert i {
  color: var(--accent);
  font-size: 0.85rem;
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-light);
  animation: fadeIn 1.5s ease-in 1s both;
}

.scroll-indicator .mouse {
  width: 24px;
  height: 38px;
  border: 1.5px solid var(--text-light);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator .wheel {
  width: 4px;
  height: 8px;
  background-color: var(--text-light);
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollWheel 2s infinite;
}

.scroll-indicator .arrow-down {
  width: 1px;
  height: 20px;
  background-color: var(--text-light);
  position: relative;
}

.scroll-indicator .arrow-down::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: -3px;
  width: 7px;
  height: 7px;
  border-bottom: 1px solid var(--text-light);
  border-right: 1px solid var(--text-light);
  transform: rotate(45deg);
}

/* Portfolio Section Styles */
.portfolio-section {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

.portfolio-section:nth-of-type(even) {
  background-color: var(--bg-alt);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
}

.section-title .sub-title {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-top: 6px;
}

.subcategory {
  margin-bottom: 3.5rem;
}

.subcategory:last-child {
  margin-bottom: 0;
}

.subcategory-title {
  font-size: 1.3rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 2rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 12px;
}

.subcategory-title::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--accent);
  border-radius: 50%;
}

.subcategory-title .sub-title {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-secondary);
}

/* Sliders UI */
.slider-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.slider-container {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  overflow-x: auto;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  padding: 1.5rem 0.5rem;
  width: 100%;
  scrollbar-width: none; /* Firefox */
}

.slider-container::-webkit-scrollbar {
  display: none; /* Safari/Chrome */
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.slider-btn.prev {
  left: -25px;
}

.slider-btn.next {
  right: -25px;
}

.slider-btn:hover {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.slider-btn:active {
  transform: translateY(-50%) scale(0.95);
}

.slider-btn.disabled {
  opacity: 0;
  pointer-events: none;
}

/* Slider Cards */
.project-card {
  flex: 0 0 calc(33.333% - 1.333rem);
  scroll-snap-align: start;
  background-color: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 1rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  user-select: none;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-light);
}

.card-media {
  width: 100%;
  overflow: hidden;
  border-radius: calc(var(--radius-md) - 4px);
  position: relative;
  background-color: var(--bg-alt);
}

.card-media img {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition-smooth);
}

.project-card:hover .card-media img {
  transform: scale(1.05);
}

.card-overlay {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
}

.gallery-badge {
  background-color: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: var(--shadow-sm);
}

.project-name {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-top: 1.2rem;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.project-card:hover .project-name {
  color: var(--accent);
}

/* Video Elements Styles */
.video-card {
  flex: 0 0 calc(30% - 1rem); /* Default to portrait width on desktop for consistent 9:16 layout */
  scroll-snap-align: start;
  background-color: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 1.2rem;
  transition: flex 0.4s cubic-bezier(0.25, 1, 0.5, 1), transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.video-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-light);
}

.video-container {
  width: 100%;
  aspect-ratio: 9/16; /* Default to 9:16 aspect ratio before playing */
  overflow: hidden;
  border-radius: calc(var(--radius-md) - 4px);
  position: relative;
  background-color: #000;
  transition: aspect-ratio 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.video-container video {
  width: 100%;
  height: 100%;
  object-fit: cover; /* Crop to fill the 9:16 layout when paused */
  cursor: pointer;
}

/* When a landscape video is playing, restore original 16:9 ratio and expand card width */
.video-card.playing:not(.portrait) {
  flex: 0 0 calc(50% - 1rem); /* Expanded landscape width on desktop */
}

.video-card.playing:not(.portrait) .video-container {
  aspect-ratio: 16/9; /* Restore 16:9 aspect ratio */
}

.custom-fs-btn {
  position: absolute;
  top: 15px;
  right: 15px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  z-index: 5;
  opacity: 0;
  transform: scale(0.8);
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-sm);
}

.video-card:hover .custom-fs-btn {
  opacity: 1;
  transform: scale(1);
}

/* Portrait 9:16 Video Adaptability */
.video-card.portrait {
  flex: 0 0 calc(30% - 1rem); /* Limit width on desktop to look natural */
}

.video-card.portrait .video-container {
  aspect-ratio: 9/16; /* Always 9:16 */
}

.video-card.portrait video {
  object-fit: contain; /* Ensure 9:16 is fully visible without crop */
}

.custom-fs-btn:hover {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  transform: scale(1.1) !important;
}



/* AI Shoutout Section */
.ai-shoutout-section {
  padding: 4.5rem 2rem 1.5rem;
  background-color: var(--bg-alt);
  text-align: center;
}

.ai-shoutout-text {
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--text-light);
  letter-spacing: 0.08em;
  font-weight: 400;
  opacity: 0.8;
}

/* Contact Footer Section */
.contact-section {
  padding: 3rem 2rem 5rem;
  background-color: var(--bg-alt);
  text-align: center;
}

.contact-container {
  max-width: 600px;
  margin: 0 auto;
}

.contact-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact-title .sub-title {
  font-family: var(--font-en);
  font-size: 0.9rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-top: 6px;
}

.email-box {
  display: inline-flex;
  align-items: center;
  gap: 1.5rem;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 1rem 2rem;
  border-radius: 50px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 4rem;
  position: relative;
  transition: var(--transition-smooth);
}

.email-box:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.email-text {
  font-family: var(--font-en);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.email-box:hover .email-text {
  color: var(--accent);
}

.copy-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 1.1rem;
  padding: 5px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.copy-btn:hover {
  color: var(--accent);
}

/* Tooltip for Copy Button */
.copy-btn .tooltip {
  position: absolute;
  bottom: 150%;
  left: 50%;
  transform: translateX(-50%) translateY(5px);
  background-color: var(--text-primary);
  color: #ffffff;
  font-size: 0.75rem;
  padding: 6px 12px;
  border-radius: 4px;
  pointer-events: none;
  opacity: 0;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.copy-btn .tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: var(--text-primary) transparent transparent transparent;
}

.copy-btn:hover .tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.copyright {
  font-family: var(--font-en);
  font-size: 0.8rem;
  color: var(--text-light);
  letter-spacing: 0.05em;
}

/* Custom Lightbox System */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  background-color: rgba(15, 15, 15, 0.98);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-close {
  position: absolute;
  top: 30px;
  right: 40px;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 2rem;
  cursor: pointer;
  z-index: 10010;
  transition: var(--transition-fast);
  opacity: 0.7;
}

.lightbox-close:hover {
  opacity: 1;
  transform: rotate(90deg);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: #ffffff;
  font-size: 2.2rem;
  cursor: pointer;
  z-index: 10010;
  padding: 20px;
  transition: var(--transition-smooth);
  opacity: 0.5;
}

.lightbox-nav:hover {
  opacity: 1;
  color: var(--accent);
}

.lightbox-nav.prev {
  left: 40px;
}

.lightbox-nav.next {
  right: 40px;
}

.lightbox-content {
  max-width: 80%;
  max-height: 80%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 10005;
  transform: scale(0.95);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox.active .lightbox-content {
  transform: scale(1);
}

.lightbox-image-wrapper {
  max-width: 100%;
  max-height: 70vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.lightbox-image-wrapper img {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5);
  border-radius: 4px;
}

.lightbox-info {
  width: 100%;
  margin-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #ffffff;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
}

.lightbox-title {
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.95);
}

.lightbox-counter {
  font-family: var(--font-en);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.1em;
}

/* Toast Messages */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background-color: var(--text-primary);
  color: #ffffff;
  padding: 12px 30px;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-md);
  z-index: 10020;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Keyframe Animations */
@keyframes scrollWheel {
  0% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.3; transform: translateX(-50%) translateY(12px); }
  100% { opacity: 1; transform: translateX(-50%) translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-40px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Responsive Web Design (RWD) Media Queries
   ========================================================================== */

/* Laptop / Medium Desktops */
@media (max-width: 1200px) {
  .container, .nav-container {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
  .hero-title {
    font-size: 3.8rem;
  }
  .hero-subtitle {
    font-size: 1.8rem;
  }

}

/* Tablet (Portrait) */
@media (max-width: 992px) {
  .nav-menu {
    position: fixed;
    top: 73px;
    left: 0;
    width: 100%;
    height: 0;
    background-color: var(--bg-color);
    flex-direction: column;
    align-items: center;
    gap: 0;
    overflow: hidden;
    transition: var(--transition-smooth);
    border-bottom: 0px solid var(--border-color);
  }

  .nav-menu.active {
    height: calc(100vh - 73px);
    padding: 3rem 0;
    gap: 2.5rem;
    border-bottom: 1px solid var(--border-color);
  }
  
  .nav-link {
    align-items: center;
    font-size: 1.2rem;
  }

  .nav-link .en {
    font-size: 0.8rem;
  }

  .nav-toggle {
    display: block;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.active span:nth-child(2) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .slider-container {
    gap: 1.2rem;
  }

  .project-card {
    flex: 0 0 calc(33.333% - 0.8rem); /* 3 items visible on tablet */
    padding: 0.8rem;
  }

  .video-card {
    flex: 0 0 calc(33.333% - 0.8rem); /* 3 items visible on tablet */
    padding: 0.8rem;
  }

  .video-card.playing:not(.portrait) {
    flex: 0 0 100%; /* Expand to full width when playing landscape */
  }

  .video-card.portrait {
    flex: 0 0 calc(33.333% - 0.8rem); /* Portrait cards stay 33.333% width */
  }

  .project-name {
    font-size: 0.85rem;
    margin-top: 0.8rem;
  }


  
  .hero-title {
    font-size: 3.2rem;
  }
  
  .hero-anchors {
    flex-direction: column;
    align-items: center;
    width: 100%;
  }

  .anchor-btn {
    width: 80%;
    max-width: 320px;
  }

  .hero-cert {
    margin-top: 1.8rem;
    font-size: 0.75rem;
  }
  
  .lightbox-nav {
    font-size: 1.8rem;
    padding: 10px;
  }
  
  .lightbox-nav.prev { left: 15px; }
  .lightbox-nav.next { right: 15px; }
  
  .lightbox-close {
    top: 20px;
    right: 25px;
  }
  
  .lightbox-content {
    max-width: 90%;
  }
}

/* Mobile Devices */
@media (max-width: 576px) {
  .container, .nav-container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.4rem;
  }
  
  .anchor-btn {
    width: 100%;
    padding: 1rem;
  }

  .section-title {
    font-size: 1.8rem;
    margin-bottom: 2.5rem;
  }
  
  .slider-container {
    gap: 0.8rem;
  }

  .slider-btn {
    display: none; /* Hide navigation arrows on mobile as swipe is native */
  }

  .project-card {
    flex: 0 0 calc(33.333% - 0.533rem); /* 3 items visible on mobile */
    padding: 0.5rem; /* Reduced padding on small screens */
  }

  .video-card {
    flex: 0 0 calc(33.333% - 0.533rem); /* 3 items visible on mobile */
    padding: 0.5rem;
  }

  .video-card.playing:not(.portrait) {
    flex: 0 0 100%; /* Expand to full width when playing landscape */
  }

  .video-card.portrait {
    flex: 0 0 calc(33.333% - 0.533rem); /* Portrait cards stay 33.333% width */
  }

  .project-name {
    font-size: 0.72rem;
    margin-top: 0.5rem;
  }


  
  .email-box {
    padding: 0.8rem 1.5rem;
  }
  
  .email-text {
    font-size: 1rem;
  }
  
  .lightbox-info {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-top: 1.2rem;
  }
}

/* Card-level Mini Slider Styles */
.card-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%) scale(0.9);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  z-index: 3;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.2s ease, color 0.2s ease;
  box-shadow: var(--shadow-sm);
  font-size: 0.75rem;
}

.project-card:hover .card-nav-btn {
  opacity: 1;
  transform: translateY(-50%) scale(1);
}

.card-nav-btn:hover {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.card-nav-btn.prev {
  left: 8px;
}

.card-nav-btn.next {
  right: 8px;
}

.card-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 4px;
  z-index: 3;
  pointer-events: none;
  background-color: rgba(0, 0, 0, 0.2);
  padding: 3px 6px;
  border-radius: 8px;
  backdrop-filter: blur(4px);
}

.card-dots .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.4);
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.card-dots .dot.active {
  background-color: #ffffff;
  transform: scale(1.25);
}

/* Subcategory Title count helper badge styles */
.subcategory-title .item-count {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-light);
  margin-left: 8px;
  vertical-align: middle;
  opacity: 0.75;
  background-color: var(--bg-color);
  padding: 2px 8px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  display: inline-block;
}