/* ===== ZM Chan Portfolio — Units.gr Inspired ===== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --bg-cream: #f4e9e1;
  --bg-black: #000000;
  --bg-white: #ffffff;
  --text-black: #000000;
  --text-white: #ffffff;
  --text-muted: #6b6560;

  --accent-yellow: #ffb200;
  --accent-orange: #ff5c38;
  --accent-red: #ea3737;
  --accent-blue: #0072e3;
  --accent-purple: #ab54f7;
  --accent-green: #1be349;
  --accent-pink: #ff8ec6;

  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --radius-xl: clamp(28px, 2.6vw, 48px);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-pill: 999px;

  --gap: clamp(12px, 1.5vw, 24px);
  --pad: clamp(20px, 2vw, 40px);
  --sidebar-w: clamp(142px, 10vw, 180px);

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.10);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.14);

  --ease: cubic-bezier(0.19, 1, 0.22, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-black);
  background-color: var(--bg-cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ===== Utilities ===== */

.container {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 var(--pad);
}

.font-display {
  font-family: var(--font-display);
}

.text-muted {
  color: var(--text-muted);
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Buttons ===== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1.5px solid var(--bg-black);
  transition: all 0.35s var(--ease);
}

.btn-black {
  background-color: var(--bg-black);
  color: var(--text-white);
}

.btn-black:hover {
  background-color: transparent;
  color: var(--text-black);
}

.btn-white {
  background-color: var(--bg-white);
  color: var(--text-black);
  border-color: var(--bg-white);
}

.btn-white:hover {
  background-color: transparent;
  color: var(--text-white);
}

.btn-arrow {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
}

/* ===== Header / Sidebar ===== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  z-index: 100;
  padding: 28px 16px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.header-logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
}

.header-logo span {
  display: block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-top: 6px;
  color: var(--text-muted);
}

.main-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.main-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: 12px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-black);
  transition: background 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
  background-color: var(--bg-black);
  color: var(--text-white);
}

.nav-index {
  font-size: 10px;
  opacity: 0.6;
}

.header-cta {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.header-cta .btn {
  width: 100%;
  padding: 12px;
  font-size: 12px;
  position: relative;
  overflow: hidden;
}

.header-cta .btn .btn-text,
.header-cta .btn .btn-hover-text {
  display: block;
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}

.header-cta .btn .btn-hover-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(100%);
  font-size: 11px;
  letter-spacing: 0.01em;
}

.header-cta .btn:hover .btn-text {
  opacity: 0;
  transform: translateY(-100%);
}

.header-cta .btn:hover .btn-hover-text {
  opacity: 1;
  transform: translateY(0);
}

.menu-toggle {
  display: none;
}

/* ===== Main Layout ===== */

.main-content {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  padding: var(--gap);
  padding-left: 0;
}

.section {
  margin-bottom: var(--gap);
}

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

.section-card {
  background-color: var(--bg-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.section-header {
  padding: var(--pad);
  padding-bottom: 0;
}

.section-kicker {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 64px);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.03em;
}

.section-subtitle {
  margin: 16px 0 0;
  max-width: 520px;
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== Hero ===== */

.hero {
  position: relative;
  min-height: calc(100vh - var(--gap) * 2);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: grid;
  place-items: center;
  background-color: var(--bg-black);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.7;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.5) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--pad);
  max-width: 900px;
}

.hero-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(48px, 8vw, 120px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--text-white);
}

.hero-tagline {
  margin: 24px 0 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 28px);
  font-weight: 500;
  color: var(--text-white);
  opacity: 0.9;
}

.hero-desc {
  margin: 20px auto 0;
  max-width: 480px;
  font-size: 16px;
  color: var(--text-white);
  opacity: 0.8;
}

.hero-cta {
  margin-top: 36px;
}

/* ===== About ===== */

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--gap);
  padding: var(--pad);
}

.about-card-main {
  background-color: var(--accent-yellow);
  border-radius: var(--radius-xl);
  padding: var(--pad);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--bg-black);
}

.about-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 700;
  line-height: 1.05;
}

.about-role {
  margin: 8px 0 0;
  font-size: 14px;
  font-weight: 600;
}

.about-bio {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  background-color: var(--bg-black);
  color: var(--text-white);
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
}

.tag-outline {
  background-color: transparent;
  color: var(--text-black);
  border: 1.5px solid var(--bg-black);
}

.about-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

.exp-item {
  background-color: var(--bg-white);
  border: 1.5px solid var(--bg-black);
  border-radius: var(--radius-lg);
  padding: var(--pad);
}

.exp-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 12px;
}

.exp-org {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.2;
}

.exp-date {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  background-color: var(--bg-cream);
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.exp-highlight {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 10px;
}

.exp-desc {
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===== Marquee ===== */

.marquee {
  background-color: var(--accent-red);
  border-radius: var(--radius-xl);
  padding: 18px 0;
  overflow: hidden;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 24s linear infinite;
}

.marquee-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 24px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 28px);
  font-weight: 700;
  color: var(--text-white);
  white-space: nowrap;
}

.marquee-icon {
  width: 18px;
  height: 18px;
  fill: var(--accent-yellow);
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ===== Works Grid ===== */

.works-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
  padding: var(--pad);
}

.works-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  padding: 0 var(--pad) var(--pad);
}

.works-col {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

.works-col .works-group-header {
  grid-column: auto;
  padding: 0 0 4px;
}

.works-col .work-card {
  cursor: pointer;
}

.work-card {
  background-color: var(--bg-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.work-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.work-card-media {
  position: relative;
  overflow: hidden;
  background-color: var(--bg-cream);
}

.work-card-media img,
.work-card-media video,
.work-card-media .media-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
  display: block;
}

.work-card:hover .work-card-media img,
.work-card:hover .work-card-media video,
.work-card:hover .work-card-media .media-bg {
  transform: scale(1.04);
}

.work-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.work-card-cat {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.work-card-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.15;
}

.work-card-desc {
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
}

.work-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: auto;
  padding-top: 14px;
  font-size: 12px;
  color: var(--text-muted);
}

.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }

.works-group-header {
  grid-column: span 4;
  padding: 16px 0 8px;
}

.works-group-header:first-of-type {
  padding-top: 0;
}

.works-group-header .section-kicker {
  margin-bottom: 6px;
}

.works-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 3vw, 42px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.ratio-16-9 { aspect-ratio: 16 / 9; }
.ratio-4-3  { aspect-ratio: 4 / 3; }
.ratio-3-4  { aspect-ratio: 3 / 4; }
.ratio-1-1  { aspect-ratio: 1 / 1; }

.media-bg {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* ===== Feature Cards ===== */

.feature-card {
  display: grid;
  grid-template-columns: 1.45fr 0.95fr;
  gap: 0;
  align-items: stretch;
  background-color: var(--bg-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 480px;
}

.feature-card-media {
  position: relative;
  overflow: hidden;
}

.feature-card-media img,
.feature-card-media .media-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-card-body {
  padding: var(--pad);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 16px;
}

.feature-card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.feature-card-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 48px);
  font-weight: 700;
  line-height: 1.05;
}

.feature-card-desc {
  margin: 0;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 520px;
}

/* ===== AI Tools ===== */

.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  padding: var(--pad);
}

.ai-card {
  border-radius: var(--radius-xl);
  padding: var(--pad);
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-height: 360px;
}

.ai-card-media {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 20px;
}

.ai-card-media img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.ai-card-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
}

.ai-card-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(0,0,0,0.75);
}

.ai-card .tag-outline {
  border-color: rgba(0,0,0,0.4);
  margin-top: auto;
}

/* ===== Vibe Coding ===== */

.vibe-card {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 0;
  align-items: stretch;
  background-color: var(--bg-purple);
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 380px;
}

.vibe-preview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  padding: 0;
  height: 100%;
}

.vibe-preview-tile {
  min-height: 140px;
  background-color: var(--bg-cream);
  overflow: hidden;
  border-radius: 0;
}

.vibe-preview-tile .media-bg {
  width: 100%;
  height: 100%;
  transition: transform 0.5s var(--ease);
}

.vibe-card:hover .vibe-preview-tile .media-bg {
  transform: scale(1.05);
}

.vibe-copy {
  padding: var(--pad);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
  color: var(--text-white);
}

.vibe-copy .section-kicker {
  color: rgba(255,255,255,0.75);
}

.vibe-copy .section-title {
  color: var(--text-white);
}

.vibe-copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  opacity: 0.85;
  max-width: 460px;
}

/* ===== Gallery ===== */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  padding: var(--pad);
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  background-color: var(--bg-cream);
  aspect-ratio: 3 / 4;
}

.gallery-item.wide {
  aspect-ratio: 4 / 3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.6) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  display: flex;
  align-items: flex-end;
  padding: 20px;
}

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

.gallery-title {
  color: var(--text-white);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
}

/* ===== Footer ===== */

.site-footer {
  background-color: var(--bg-black);
  border-radius: var(--radius-xl);
  color: var(--text-white);
  padding: var(--pad);
  margin: var(--gap);
  margin-left: 0;
}

.footer-top {
  text-align: center;
  padding: 60px 0;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: clamp(48px, 10vw, 140px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.04em;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.footer-email {
  font-size: 18px;
  font-weight: 600;
}

.footer-note {
  font-size: 13px;
  opacity: 0.6;
}

/* ===== Lightbox ===== */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background-color: rgba(0,0,0,0.92);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--pad);
}

.lightbox.active {
  display: flex;
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  background-color: var(--bg-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.lightbox-content {
  max-width: 90vw;
  max-height: 85vh;
}

.lightbox-content img,
.lightbox-content video {
  max-width: 100%;
  max-height: 85vh;
  border-radius: var(--radius-md);
}

/* ===== Mobile Menu ===== */

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background-color: var(--bg-cream);
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 16px;
  padding: var(--pad);
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu a {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
}

/* ===== Extra components for new homepage ===== */

.work-card { cursor: pointer; }

/* Solar term thumbnails inside feature card */
.solar-thumb-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  margin-top: 20px;
}

.solar-thumb {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 1 / 1;
  background-color: var(--bg-cream);
}

.solar-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}

.solar-thumb:hover img { transform: scale(1.06); }

.solar-thumb span {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 6px 8px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-white);
  background: linear-gradient(0deg, rgba(0,0,0,0.65) 0%, transparent 100%);
}

/* Compact solar strip at bottom of Featured Projects */
.solar-strip {
  grid-template-columns: 0.55fr 1.45fr;
  min-height: auto;
}

.solar-strip .feature-card-body {
  justify-content: center;
  gap: 12px;
}

.solar-strip-media {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--pad);
  background-color: var(--bg-cream);
}

.solar-thumb-row.compact {
  width: 100%;
  margin-top: 0;
  gap: 10px;
}

.solar-thumb-row.compact .solar-thumb {
  border-radius: 14px;
}

@media (max-width: 1024px) {
  .solar-strip {
    grid-template-columns: 1fr;
  }
  .solar-strip-media {
    padding: 24px;
  }

  .works-split {
    grid-template-columns: 1fr;
  }
}

/* Commercial project block: mooncake + solar term */
.commercial-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  padding: 0 var(--pad) var(--pad);
}

.commercial-card {
  background-color: var(--bg-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.commercial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.commercial-card-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background-color: var(--bg-cream);
}

.commercial-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.commercial-card:hover .commercial-card-media img {
  transform: scale(1.04);
}

.commercial-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.commercial-card.solar .commercial-card-body {
  gap: 14px;
  justify-content: space-between;
}

.commercial-card .solar-thumb-row {
  margin-top: 4px;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.commercial-card .solar-thumb {
  border-radius: 12px;
}

/* Mooncake image slider */
.mooncake-slider {
  position: relative;
  overflow: hidden;
}

.slider-track {
  position: relative;
  width: 100%;
  height: 100%;
}

.slider-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.5s var(--ease);
}

.slider-slide.active {
  opacity: 1;
}

.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(255,255,255,0.9);
  color: var(--text-black);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  opacity: 0;
  transition: opacity 0.3s ease, background-color 0.3s ease;
}

.mooncake-slider:hover .slider-arrow {
  opacity: 1;
}

.slider-arrow:hover {
  background-color: var(--bg-white);
}

.slider-prev { left: 12px; }
.slider-next { right: 12px; }

.slider-dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.slider-dot.active {
  background-color: var(--bg-white);
  transform: scale(1.2);
}

/* Cover crop for letterboxed videos */
.cover-crop img,
.cover-crop video {
  transform: scale(1.12);
  object-position: center;
}

@media (max-width: 1024px) {
  .commercial-block {
    grid-template-columns: 1fr;
  }

  .commercial-card .solar-thumb-row {
    grid-template-columns: repeat(6, 1fr);
  }
}

@media (max-width: 768px) {
  .commercial-card .solar-thumb-row {
    grid-template-columns: repeat(3, 1fr);
  }
}
.cta-card {
  background-color: var(--accent-yellow);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  color: var(--text-black);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.cta-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.cta-card-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Vibe card color variants */
.vibe-card.warm { background-color: var(--accent-yellow); }
.vibe-card.ip-card { background-color: var(--accent-orange); }

.vibe-card.warm .vibe-copy,
.vibe-card.ip-card .vibe-copy,
.vibe-card.warm .vibe-copy .section-title,
.vibe-card.ip-card .vibe-copy .section-title {
  color: var(--text-black);
}

.vibe-card.warm .vibe-copy .section-kicker,
.vibe-card.ip-card .vibe-copy .section-kicker {
  color: rgba(0,0,0,0.6);
}

/* Lightbox caption */
.lightbox-caption {
  text-align: center;
  margin-top: 16px;
}

.lightbox-caption-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-white);
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.copy-toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: var(--bg-black);
  color: var(--text-white);
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  box-shadow: 0 12px 36px rgba(0,0,0,0.25);
  opacity: 0;
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
  z-index: 9999;
  pointer-events: none;
}

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

/* ===== Responsive ===== */

@media (max-width: 1200px) {
  .works-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .span-2,
  .span-3,
  .span-4 {
    grid-column: span 2;
  }

  .ai-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1024px) {
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: auto;
    flex-direction: row;
    align-items: center;
    padding: 16px var(--pad);
    background-color: var(--bg-cream);
    border-bottom: 1px solid rgba(0,0,0,0.08);
  }

  .header-logo span {
    display: none;
  }

  .main-nav,
  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background-color: var(--bg-black);
    color: var(--text-white);
    border-radius: 12px;
    margin-left: auto;
  }

  .main-content {
    margin-left: 0;
    padding: 0;
    padding-top: 76px;
  }

  .site-footer {
    margin: var(--gap);
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    grid-template-columns: 1fr;
  }

  .vibe-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --pad: 18px;
    --gap: 12px;
  }

  .section-title {
    font-size: 36px;
  }

  .works-grid,
  .ai-grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .span-2,
  .span-3,
  .span-4 {
    grid-column: span 1;
  }

  .feature-card {
    min-height: auto;
  }

  .feature-card-body {
    padding: 24px;
  }

  .exp-header {
    flex-direction: column;
    gap: 10px;
  }

  .exp-date {
    align-self: flex-start;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}