/* Shared base styles */
:root {
  color-scheme: dark;
  /* Deep Onyx */
  --font-sans: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  --ease-reveal: cubic-bezier(0.16, 1, 0.3, 1);
  --bg: #050505;
  --bg-2: #0a0a0a;
  --surface: rgba(16, 16, 18, 0.82);
  --text: #e8e8ed;
  --muted: #8e8e93;
  --line: #3a3a3c;
  --accent: #3a3a3c;
  --accent-bright: rgba(232, 232, 237, 0.38);
  --radius: 10px;
  --ease-premium: cubic-bezier(0.4, 0, 0.2, 1);
  --soft-shadow: 0 24px 56px rgba(0, 0, 0, 0.65);
  --glass: rgba(255, 255, 255, 0.045);
  --glass-border: rgba(255, 255, 255, 0.06);
  /* Nhãn phụ ~64% độ sáng so với chữ chính */
  --label-fg: rgba(232, 232, 237, 0.64);
  --page-bg: radial-gradient(120% 100% at 50% 0%, #0d0d0f 0%, var(--bg) 52%);
  --header-bg-scrolled: rgba(5, 5, 5, 0.76);
  --control-active-bg: rgba(232, 232, 237, 0.12);
  --interactive-hover: rgba(232, 232, 237, 0.05);
  --interactive-active: rgba(232, 232, 237, 0.09);
  --text-soft: rgba(232, 232, 237, 0.94);
  --overlay-bg: rgba(0, 0, 0, 0.52);
  --modal-surface: rgba(12, 12, 14, 0.82);
  --modal-shadow: 0 32px 80px rgba(0, 0, 0, 0.65);
  --arrow-bg: rgba(8, 8, 10, 0.55);
  --arrow-hover-bg: rgba(232, 232, 237, 0.1);
  --case-image-surface: rgba(10, 10, 10, 0.6);
  --media-overlay-gradient: linear-gradient(180deg, rgba(5, 5, 5, 0), rgba(5, 5, 5, 0.92));
  --case-bg-start: #121214;
  --case-bg-end: #050505;
  /* About “feature work in” link accent (coral) */
  --about-featured-link: #d9735c;
  --about-featured-link-hover: #e99982;
  --about-hero-surface: rgba(28, 28, 32, 0.72);
  --about-hero-surface-border: rgba(255, 255, 255, 0.06);
  /* Keep header and main in one vertical rhythm so grid columns (e.g. MOTO) match nav */
  --page-inline: clamp(1rem, 4vw, 1.6rem);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--page-bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-feature-settings: "kern" 1, "liga" 1;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto minmax(180px, 1fr);
  align-items: center;
  gap: 1.2rem;
  padding: 0.85rem var(--page-inline);
  border-bottom: 1px solid var(--line);
  transition: transform 0.32s var(--ease-premium), background 0.5s var(--ease-premium), border-color 0.5s var(--ease-premium);
  will-change: transform;
}

.site-header.is-hidden {
  transform: translateY(calc(-100% - 2px));
}

.site-header.scrolled {
  background: var(--header-bg-scrolled);
  border-color: var(--line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.brand-logo {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.header-right,
.header-utility {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.7rem;
  justify-self: end;
}

.header-nav {
  display: flex;
  align-items: center;
  justify-self: center;
  gap: 1rem;
  font-size: 0.8rem;
}

.header-nav a {
  text-decoration: none;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header-nav a:hover {
  color: var(--text);
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.22rem;
  background: transparent;
  width: fit-content;
  flex-shrink: 0;
}

.lang-btn {
  appearance: none;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.5rem;
  min-width: 40px;
  cursor: pointer;
  transition: color 0.35s var(--ease-premium), background 0.35s var(--ease-premium);
}

.lang-btn + .lang-btn {
  border-left: 0;
}

.lang-btn.active {
  background: transparent;
  color: var(--text);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

.lang-btn:hover {
  color: var(--text);
}

.lang-toggle-btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  width: 32px;
  height: 32px;
  padding: 0;
  flex: 0 0 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
  cursor: pointer;
  transition: color 0.35s ease, background 0.35s ease, border-color 0.35s ease, transform 0.35s ease;
}

.lang-toggle-btn:hover {
  color: var(--text);
  background: var(--interactive-hover);
  transform: translateY(-1px);
}

.main-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  padding-bottom: clamp(4rem, 14vw, 7rem);
}

.location-strip {
  display: grid;
  /* Match .site-header: mid = nav width (see --location-strip-mid, set in portfolio.js on index) */
  grid-template-columns: minmax(260px, 1fr) minmax(var(--location-strip-mid, 0px), max-content) minmax(180px, 1fr);
  gap: 1.2rem;
  align-items: start;
  padding: 0 0 clamp(1.25rem, 3vw, 1.8rem);
  margin-bottom: clamp(1.25rem, 3vw, 1.8rem);
  border-bottom: 1px solid var(--line);
}

.location-strip__col {
  min-width: 0;
}

.location-strip__label {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.location-strip__time {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.location-strip__text {
  margin: 0;
  color: var(--text);
  font-size: clamp(0.9rem, 1.5vw, 1rem);
  line-height: 1.45;
}

.location-strip__col--content {
  display: grid;
  gap: 0.5rem;
}

.location-strip__col--stack {
  display: grid;
  gap: 0.85rem;
}

/* Aligned 3-col layout only: first-line text insets with .view-btn padding */
@media (min-width: 951px) {
  .location-strip__col--moto {
    padding-inline-start: 0.58rem;
  }

  /* Keep role column left-aligned on desktop */
  .location-strip__col--role {
    justify-self: end;
    transform: translateX(clamp(0.5rem, 1.6vw, 1.1rem));
    text-align: start;
    max-width: min(28rem, 100%);
  }
}

.site-footer.site-footer--contactbar {
  padding: clamp(1rem, 2.8vw, 1.6rem) clamp(1.5rem, 4vw, 2.25rem) clamp(1.35rem, 3vw, 2rem);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
}

.site-footer__contact-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: clamp(1rem, 3vw, 2rem);
  row-gap: 0.65rem;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
}

.site-footer__brandmark {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: inherit;
  flex: 0 0 auto;
}

.site-footer__branddot {
  display: inline-block;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.site-footer__brandtext {
  letter-spacing: 0.1em;
  text-transform: none;
}

.site-footer__end {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.45rem 0.55rem;
  flex: 1 1 auto;
  min-width: 0;
}

.site-footer__extnav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem 0.55rem;
}

.site-footer__extlink {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.28s var(--ease-premium, ease), transform 0.28s var(--ease-premium, ease);
}

.site-footer__extlink:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.site-footer__phone-details {
  display: inline;
}

.site-footer__phone-summary {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  list-style: none;
  cursor: pointer;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.28s var(--ease-premium, ease), transform 0.28s var(--ease-premium, ease);
}

.site-footer__phone-summary::-webkit-details-marker {
  display: none;
}

.site-footer__phone-summary:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.site-footer__phone-summary:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
  border-radius: 2px;
}

.site-footer__phone-details[open] .site-footer__phone-summary {
  margin-inline-end: 0.35rem;
}

.site-footer__phone-number {
  display: inline;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  user-select: text;
}

.site-footer__phone-number:hover {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.site-footer__extarrow {
  font-size: 0.68em;
  line-height: 1;
  translate: 0 0.04em;
}

.site-footer__pipe {
  color: var(--muted);
  opacity: 0.55;
  user-select: none;
}

.site-footer__pipe--dim {
  opacity: 0.4;
}

.site-footer__year {
  margin: 0;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.14em;
  color: var(--muted);
}

@media (max-width: 768px) {
  .location-strip {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .location-strip__time {
    font-size: clamp(1.6rem, 7vw, 2.2rem);
  }

  .site-footer__contact-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-rows: auto auto;
    align-items: center;
    gap: 0.7rem;
    padding: 0.8rem 0.85rem;
  }

  .site-footer__end {
    display: grid;
    grid-column: 1 / span 2;
    grid-row: 1 / span 2;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-rows: auto auto;
    align-items: center;
    width: 100%;
  }

  .site-footer__extnav {
    grid-column: 1 / span 2;
    grid-row: 1;
    width: 100%;
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 0.55rem 0.7rem;
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .site-footer__extnav::-webkit-scrollbar {
    display: none;
  }

  .site-footer__brandmark {
    grid-column: 1;
    grid-row: 2;
    align-self: center;
  }

  .site-footer__year {
    grid-column: 2;
    grid-row: 2;
    justify-self: end;
    margin-left: 0;
  }

  .site-footer__pipe,
  .site-footer__extarrow {
    display: inline;
  }
}

@media (max-width: 520px) {
  .site-footer.site-footer--contactbar {
    font-size: 0.68rem;
    letter-spacing: 0.1em;
  }

  .site-footer__contact-row {
    gap: 0.6rem;
  }

  .site-footer__end {
    gap: 0.45rem 0.6rem;
  }
}

@media (max-width: 520px) {
  #aboutStudioBody {
    column-count: 1;
  }
}

.section-label {
  margin: 0 0 0.65rem;
  color: var(--label-fg);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.heading-display {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: 0.01em;
  font-feature-settings: "kern" 1, "liga" 1;
}

.cta-btn {
  width: fit-content;
  margin-top: 0.2rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  padding: 0.65rem 1rem;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.5s var(--ease-premium), background 0.5s var(--ease-premium),
    color 0.5s var(--ease-premium), border-color 0.5s var(--ease-premium);
}

.cta-btn:hover {
  transform: translateY(-2px);
  background: rgba(232, 232, 237, 0.08);
  border-color: var(--accent-bright);
  color: var(--text);
}

.tech-hint {
  position: absolute;
  right: 0;
  top: 3rem;
  width: min(380px, 45vw);
  height: 140px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass);
  opacity: 0.55;
  overflow: hidden;
}

.tech-dot-grid {
  width: 100%;
  height: 100%;
  background-image: radial-gradient(circle, rgba(232, 232, 237, 0.22) 1px, transparent 1px);
  background-size: 14px 14px;
  mask-image: linear-gradient(120deg, rgba(0, 0, 0, 0.95), rgba(0, 0, 0, 0.2));
}

.showcase-section {
  margin-top: 1rem;
}

.bento-grid {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: 1.15fr 1.15fr 1fr;
  grid-template-rows: minmax(170px, 220px) auto;
  align-items: stretch;
}

.bento-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--soft-shadow);
  padding: 1rem;
}

.card-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.card-featured {
  grid-column: 1 / span 2;
  grid-row: 1;
  overflow: hidden;
  padding: 0.65rem;
  position: relative;
}

.card-stack {
  grid-column: 3;
  grid-row: 1;
}

.card-stats {
  grid-column: 1;
  grid-row: 2;
}

.card-links {
  grid-column: 2 / span 2;
  grid-row: 2;
}

.showcase-track {
  display: flex;
  gap: 0.65rem;
  width: 100%;
  height: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  padding-bottom: 0.2rem;
}

.showcase-track::-webkit-scrollbar {
  height: 6px;
}

.showcase-track::-webkit-scrollbar-thumb {
  background: rgba(232, 232, 237, 0.22);
  border-radius: 999px;
}

.showcase-slide {
  position: relative;
  min-width: min(520px, 78%);
  height: 100%;
  border-radius: 8px;
  border: 1px solid var(--line);
  overflow: hidden;
  cursor: pointer;
  scroll-snap-align: start;
  transition: transform 0.5s var(--ease-premium), border-color 0.5s var(--ease-premium);
}

.showcase-slide.active {
  border-color: var(--accent-bright);
}

.showcase-slide:hover {
  transform: translateY(-2px);
}

.showcase-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.showcase-overlay {
  position: absolute;
  inset: auto 0 0 0;
  background: var(--media-overlay-gradient);
  padding: 0.9rem;
}

.showcase-overlay h3 {
  margin: 0.33rem 0;
  font-size: 1.04rem;
}

.showcase-overlay p {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.card-stack h3 {
  margin: 0.6rem 0 0.5rem;
  font-size: 1rem;
}

.card-stack p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.card-stats .stats-grid {
  margin-top: 0.7rem;
  display: grid;
  gap: 0.7rem;
}

.card-stats strong {
  display: block;
  color: var(--text);
  font-size: 1.1rem;
}

.card-stats span {
  color: var(--muted);
  font-size: 0.82rem;
}

.card-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card-links a {
  text-decoration: none;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.45rem 0.6rem;
  transition: transform 0.5s var(--ease-premium), border-color 0.5s var(--ease-premium),
    color 0.5s var(--ease-premium);
}

.card-links a:hover {
  transform: translateX(4px);
  border-color: var(--accent-bright);
  color: var(--text);
}

.projects-section {
  margin-top: 2.6rem;
}

.projects-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.projects-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.83rem;
}

.projects-table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--soft-shadow);
}

.projects-table {
  width: 100%;
  border-collapse: collapse;
}

.projects-table thead tr {
  border-bottom: 1px solid var(--line);
}

.projects-table th,
.projects-table td {
  text-align: left;
  vertical-align: top;
  padding: 0.85rem 0.75rem;
  font-size: 0.86rem;
}

.projects-table th {
  color: var(--label-fg);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.projects-table tbody tr {
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  transition: background 0.5s var(--ease-premium), color 0.5s var(--ease-premium);
}

.projects-table tbody tr:last-child {
  border-bottom: 0;
}

.projects-table tbody tr:hover {
  background: var(--interactive-hover);
}

.projects-table tbody tr:hover td {
  font-weight: 600;
}

.projects-table tbody tr.active {
  background: var(--interactive-active);
}

.projects-table tbody tr.active td {
  font-weight: 400;
}

.project-detail {
  margin-top: 0.9rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--soft-shadow);
  display: grid;
  grid-template-columns: minmax(230px, 340px) 1fr;
  gap: 1rem;
}

.project-thumb-wrap {
  width: 100%;
  height: 220px;
  border-radius: 10px;
  border: 1px dashed var(--line);
  background: var(--glass);
  overflow: hidden;
}

.project-thumb-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  background: var(--bg-2);
}

.project-thumb-fallback {
  width: 100%;
  height: 220px;
  place-items: center;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 1rem;
  display: none;
}

.project-meta h2 {
  margin: 0 0 0.35rem;
  font-size: 1.35rem;
}

.project-meta p {
  margin: 0.15rem 0;
  color: var(--muted);
}

.preview-links {
  margin-top: 0.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.preview-links a {
  border: 1px solid var(--line);
  border-radius: 8px;
  text-decoration: none;
  padding: 0.42rem 0.56rem;
  font-size: 0.8rem;
  transition: border-color 0.5s var(--ease-premium);
}

.preview-links a:hover {
  border-color: var(--accent-bright);
}

.meta-grid {
  margin-top: 2.6rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.meta-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--soft-shadow);
  padding: 1rem;
}

.meta-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.meta-grid li {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 0.5rem;
  padding: 0.32rem 0;
}

.meta-grid li span {
  color: var(--muted);
  font-size: 0.84rem;
}

.meta-grid li p,
.meta-grid li a {
  margin: 0;
  text-decoration: none;
  word-break: break-word;
}

.skills-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem 1rem;
}

.skills-columns h3 {
  margin: 0 0 0.3rem;
  font-size: 0.94rem;
}

.skills-columns p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1s var(--ease-reveal), transform 1s var(--ease-reveal);
  transition-delay: var(--reveal-delay, 0s);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

@media (max-width: 950px) {
  .site-header {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .location-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(1rem, 3vw, 2rem);
  }

  .header-nav {
    justify-self: start;
    gap: 0.7rem 0.9rem;
    font-size: 0.74rem;
    flex-wrap: wrap;
  }

  .tech-hint {
    position: static;
    width: 100%;
  }

  .bento-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .card-featured {
    min-height: 290px;
  }

  .card-featured,
  .card-stack,
  .card-stats,
  .card-links {
    grid-column: auto;
    grid-row: auto;
  }

  .showcase-slide {
    min-width: 86%;
  }

  .project-detail,
  .meta-grid,
  .skills-columns {
    grid-template-columns: 1fr;
  }

  .projects-table th,
  .projects-table td {
    padding: 0.72rem 0.5rem;
    font-size: 0.78rem;
  }
}

@media (max-width: 650px) {
  .site-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.24rem 0.4rem;
    padding: 0.48rem 0.65rem;
  }

  .brand {
    order: 1;
    width: 100%;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 0.45rem;
  }

  .brand-logo {
    font-size: 0.96rem;
    letter-spacing: 0.1em;
  }


  .header-nav {
    order: 2;
    flex: 1 1 auto;
    width: auto;
    min-width: 0;
    justify-content: flex-start;
    gap: 0.3rem;
    font-size: 0.62rem;
    flex-wrap: nowrap;
    white-space: nowrap;
  }

  .header-utility {
    order: 3;
    flex: 0 0 auto;
    width: fit-content;
    max-width: none;
    gap: 0.24rem;
  }

  .header-nav a,
  .view-btn,
  .lang-btn,
  .lang-toggle-btn {
    letter-spacing: 0.04em;
  }

  .view-btn,
  .lang-btn {
    font-size: 0.6rem;
    padding: 0.22rem 0.32rem;
    min-width: 28px;
  }

  .lang-toggle-btn,
  .theme-toggle-btn {
    width: 24px;
    height: 24px;
    flex: 0 0 24px;
  }
}

@media (max-width: 420px) {
  .site-header {
    padding-inline: 0.42rem;
  }

  .brand-logo {
    font-size: 0.9rem;
    letter-spacing: 0.08em;
  }

  .header-nav {
    gap: 0.22rem;
    font-size: 0.58rem;
  }

  .view-btn {
    padding-inline: 0.26rem;
  }

  .header-utility {
    gap: 0.2rem;
  }

  .lang-btn {
    min-width: 24px;
    padding-inline: 0.24rem;
  }

  .lang-toggle-btn {
    font-size: 0.56rem;
  }
}

/* Deep Onyx — layout tokens (override base :root) */
:root {
  --bg: #050505;
  --bg-2: #0a0a0a;
  --text: #e8e8ed;
  --muted: #8e8e93;
  --line: #3a3a3c;
  --accent: #3a3a3c;
  --accent-bright: rgba(232, 232, 237, 0.38);
  --surface: rgba(14, 14, 16, 0.88);
  --soft-shadow: 0 28px 64px rgba(0, 0, 0, 0.72);
  --glass: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.07);
  --page-bg: radial-gradient(120% 100% at 50% 0%, #0d0d0f 0%, var(--bg) 52%);
  --header-bg-scrolled: rgba(5, 5, 5, 0.76);
  --control-active-bg: rgba(232, 232, 237, 0.12);
  --interactive-hover: rgba(232, 232, 237, 0.05);
  --interactive-active: rgba(232, 232, 237, 0.09);
  --text-soft: rgba(232, 232, 237, 0.94);
  --overlay-bg: rgba(0, 0, 0, 0.52);
  --modal-surface: rgba(12, 12, 14, 0.82);
  --modal-shadow: 0 32px 80px rgba(0, 0, 0, 0.65);
  --arrow-bg: rgba(8, 8, 10, 0.55);
  --arrow-hover-bg: rgba(232, 232, 237, 0.1);
  --case-image-surface: rgba(10, 10, 10, 0.6);
  --media-overlay-gradient: linear-gradient(180deg, rgba(5, 5, 5, 0), rgba(5, 5, 5, 0.92));
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #fffcf5;
  --bg-2: #f3eee4;
  --text: #1d1713;
  --muted: #6f645b;
  --line: #dcccbc;
  --accent: #ccb8a4;
  --accent-bright: rgba(58, 44, 31, 0.28);
  --surface: rgba(255, 250, 242, 0.88);
  --soft-shadow: 0 18px 40px rgba(130, 100, 70, 0.14);
  --glass: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(170, 140, 110, 0.24);
  --label-fg: rgba(42, 32, 24, 0.68);
  --page-bg: radial-gradient(120% 100% at 50% 0%, #fffaf1 0%, #fffcf5 58%);
  --header-bg-scrolled: rgba(255, 252, 245, 0.82);
  --control-active-bg: rgba(58, 44, 31, 0.1);
  --interactive-hover: rgba(58, 44, 31, 0.06);
  --interactive-active: rgba(58, 44, 31, 0.1);
  --text-soft: rgba(29, 23, 19, 0.92);
  --overlay-bg: rgba(255, 252, 245, 0.68);
  --modal-surface: rgba(255, 250, 242, 0.9);
  --modal-shadow: 0 30px 70px rgba(118, 87, 57, 0.2);
  --arrow-bg: rgba(255, 250, 242, 0.9);
  --arrow-hover-bg: rgba(58, 44, 31, 0.08);
  --case-image-surface: rgba(245, 236, 223, 0.75);
  --media-overlay-gradient: linear-gradient(180deg, rgba(255, 252, 245, 0), rgba(255, 252, 245, 0.9));
  --case-bg-start: #f5ede2;
  --case-bg-end: #fffcf5;
  --about-featured-link: #b84a32;
  --about-featured-link-hover: #9e452f;
  --about-hero-surface: rgba(255, 250, 242, 0.92);
  --about-hero-surface-border: rgba(200, 180, 155, 0.35);
}

html,
body {
  background: var(--page-bg);
  color: var(--text);
  scroll-behavior: auto;
}

.hidden {
  display: none !important;
}

.site-header {
  padding: 0.9rem var(--page-inline);
  background: transparent;
  border-bottom: 1px solid var(--line);
}

.site-header.scrolled {
  background: var(--header-bg-scrolled);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.brand-logo,
.header-nav a,
.view-btn {
  color: var(--text);
}

.section-label {
  color: var(--muted);
}

.brand {
  justify-self: start;
  display: block;
  color: inherit;
  text-decoration: none;
}

.header-nav a {
  color: var(--muted);
}

.header-nav a:hover {
  color: var(--text);
}

.main-layout {
  --main-gutter: var(--page-inline);
  width: 100%;
  max-width: none;
  padding: clamp(1.25rem, 3vw, 2rem) var(--main-gutter) clamp(4.5rem, 14vw, 8rem);
}

.header-nav {
  align-items: center;
  gap: 0.95rem;
}

.view-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.95rem;
}

.view-btn {
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.34rem 0.58rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.view-btn + .view-btn {
  border-left: 0;
}

.view-btn.active {
  background: transparent;
  color: var(--text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

.theme-toggle-btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  width: 32px;
  height: 32px;
  padding: 0;
  flex: 0 0 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color 0.35s ease, background 0.35s ease, border-color 0.35s ease, transform 0.35s ease;
}

.theme-toggle-btn::before {
  content: "☾";
  font-size: 0.88rem;
  line-height: 1;
}

html[data-theme="light"] .theme-toggle-btn::before {
  content: "☀";
}

.theme-toggle-btn:hover {
  color: var(--text);
  background: var(--interactive-hover);
  transform: translateY(-1px);
}

.header-nav a.active-link {
  color: var(--text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

.content-view {
  padding-top: clamp(2.25rem, 6vw, 4rem);
}

body[data-page="projects"] .content-view {
  padding-top: 0;
}

body[data-page="projects"] .main-layout {
  padding-top: clamp(0.25rem, 1vw, 0.75rem);
}

/* --- Media skeleton / placeholder system ---------------------------------
   Any wrapper with .media-skeleton shows a subtle shimmer until the inner
   <img>/<video>/<iframe> reports complete (JS adds .is-loaded). On error
   (.is-error) the shimmer is replaced with a static broken-image glyph so
   slow networks / 404s never show a black void. Theme-aware via tokens. */
.media-skeleton {
  --skeleton-base: color-mix(in srgb, var(--text) 7%, transparent);
  --skeleton-highlight: color-mix(in srgb, var(--text) 13%, transparent);
  position: relative;
  background-color: var(--skeleton-base);
  isolation: isolate;
}

.media-skeleton::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
    100deg,
    transparent 30%,
    var(--skeleton-highlight) 50%,
    transparent 70%
  );
  background-size: 220% 100%;
  background-repeat: no-repeat;
  background-position: -120% 0;
  animation: media-shimmer 1.4s linear infinite;
  pointer-events: none;
  z-index: 0;
  opacity: 1;
  transition: opacity 0.32s ease;
}

.media-skeleton.is-loaded {
  background-color: transparent;
}

.media-skeleton.is-loaded::before {
  opacity: 0;
  animation: none;
}

.media-skeleton.is-error {
  background-color: var(--skeleton-base);
}

.media-skeleton.is-error::before {
  display: none;
}

.media-skeleton.is-error::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 48 48' fill='none' stroke='currentColor' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'><rect x='6' y='9' width='36' height='30' rx='3'/><circle cx='17' cy='20' r='3'/><path d='M6 32l11-10 9 8 5-4 11 9'/></svg>");
  background-repeat: no-repeat;
  background-position: center;
  background-size: clamp(28px, 9%, 56px);
  color: var(--muted);
  opacity: 0.55;
  z-index: 1;
}

@keyframes media-shimmer {
  0%   { background-position: -120% 0; }
  100% { background-position: 220% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .media-skeleton::before {
    animation: none;
  }
}