:root {
  --paper: #ffffff;
  --tint: #eef1f6;
  --ink: #0a0a0a;
  --ink-soft: #4a5266;
  --stone: #7d8494;
  --line: rgba(10, 10, 10, 0.12);
  --navy: #1a2f52;
  --navy-deep: #0d1b33;
  --sidebar: 72px;
  --sidebar-expanded: 220px;
  --topbar: 64px;
  --font-sans: 'Familjen Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Martian Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-devanagari: 'Noto Sans Devanagari', 'Familjen Grotesk', sans-serif;
}

[data-i18n-ne] { font-family: var(--font-devanagari); }

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink-soft);
  background: var(--paper);
  line-height: 1.65;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

a { color: var(--ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

h1, h2, h3 {
  color: var(--ink);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-top: 0;
}
h1 { font-size: 2.75rem; }
h2 { font-size: 1.75rem; margin-bottom: 1.25rem; }
h3 { font-size: 1.1rem; font-weight: 600; }

.sub-heading { margin-top: 2.5rem; }

em { font-style: italic; color: var(--navy); }

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.75rem 1rem;
  z-index: 100;
}
.skip:focus { left: 1rem; top: 1rem; }

/* Sidebar (desktop) */
.sidebar {
  display: none;
}
@media (min-width: 1024px) {
  .sidebar {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--sidebar);
    padding: 1.75rem 0 1.5rem;
    border-right: 1px solid var(--line);
    background: var(--paper);
    z-index: 20;
    overflow: hidden;
    transition: width 0.25s ease, box-shadow 0.25s ease;
  }
  .sidebar:hover,
  .sidebar:focus-within {
    width: var(--sidebar-expanded);
    box-shadow: 4px 0 24px rgba(26, 47, 82, 0.12);
  }
  .topbar { display: none; }
}

.sidebar-mark {
  display: flex;
  align-items: center;
  padding: 0 0.9rem;
  line-height: 1.3;
}
.sidebar-mark:hover { text-decoration: none; }
.sidebar-mark-icon {
  width: 46px;
  height: auto;
  transition: width 0.25s ease;
}
.sidebar:hover .sidebar-mark-icon,
.sidebar:focus-within .sidebar-mark-icon {
  width: 160px;
}

.sidebar-nav ul { list-style: none; margin: 0; padding: 0; }
.sidebar-tick {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  height: 2.4rem;
  padding: 0 1.5rem;
  font-size: 0.9rem;
  color: var(--stone);
  white-space: nowrap;
}
.sidebar-tick:hover { color: var(--ink); text-decoration: none; }
.sidebar-tick i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  border: 1px solid var(--stone);
  flex: none;
}
.sidebar-tick span {
  opacity: 0;
  transition: opacity 0.15s ease;
}
.sidebar:hover .sidebar-tick span,
.sidebar:focus-within .sidebar-tick span {
  opacity: 1;
}
.sidebar-tick.is-on { color: var(--navy); font-weight: 500; }
.sidebar-tick.is-on i { background: var(--navy); border-color: var(--navy); }

.sidebar-foot {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.sidebar:hover .sidebar-foot,
.sidebar:focus-within .sidebar-foot {
  opacity: 1;
}
.sidebar-foot a { color: var(--stone); }
.sidebar-foot a:hover { color: var(--ink); }

/* Language toggle */
.lang-toggle { display: flex; gap: 0.35rem; }
.lang-toggle button {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--stone);
  cursor: pointer;
}
.lang-toggle button:hover { color: var(--ink); }
.lang-toggle button[aria-pressed="true"] {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--paper);
}

/* Topbar (mobile) */
.topbar {
  position: sticky;
  top: 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  z-index: 20;
}
.topbar-inner {
  height: var(--topbar);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 1.25rem;
}
.brand-name { display: flex; align-items: center; gap: 0.6rem; font-weight: 700; font-size: 1rem; color: var(--ink); }
.brand-icon { width: 28px; height: auto; flex: none; }
.topbar-nav { display: flex; align-items: center; gap: 1.1rem; flex-wrap: wrap; }
.topbar-nav a { color: var(--ink-soft); font-size: 0.85rem; font-weight: 500; }
.topbar-nav a:hover { color: var(--ink); }

/* Page content offset */
.page { }
@media (min-width: 1024px) {
  .page { margin-left: var(--sidebar); }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.65rem 1.4rem;
  border: 1px solid var(--ink);
  border-radius: 0;
  font-weight: 500;
  color: var(--ink);
  background: transparent;
}
.btn:hover { background: var(--navy); border-color: var(--navy); color: var(--paper); text-decoration: none; }
.btn-primary { background: var(--navy); border-color: var(--navy); color: var(--paper); }
.btn-primary:hover { background: transparent; color: var(--navy); }

/* Hero */
.hero { padding: 4.5rem 0 4rem; }
.hero h1 { margin-bottom: 1rem; max-width: 20ch; }
.hero-lead { color: var(--ink-soft); max-width: 52ch; margin: 0 0 2rem; font-size: 1.05rem; }

/* Sections */
.page-section { padding: 3.5rem 0; scroll-margin-top: 1.5rem; }
.page-section--tint { background: var(--tint); }
#top { scroll-margin-top: 1.5rem; }

/* Grids */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; margin: 1.5rem 0; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2.5rem; margin: 1.5rem 0; }
@media (max-width: 768px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card { border-top: 1px solid var(--line); padding-top: 1.25rem; }

/* Portfolio feature (real project with photos) */
.portfolio-feature { margin: 1.5rem 0 2.5rem; }
.portfolio-feature h3 { font-size: 1.3rem; }

/* Portfolio carousel */
.portfolio-carousel {
  position: relative;
  margin-top: 1.5rem;
  padding: 0.5rem 0 1rem;
  overflow: hidden;
}
.carousel-track {
  display: flex;
  gap: 1.5rem;
  transition: transform 0.5s ease;
  will-change: transform;
}
.carousel-card {
  display: block;
  position: relative;
  flex: none;
  width: min(560px, 78vw);
  aspect-ratio: 4 / 3;
  margin: 0;
  padding: 0;
  background-color: var(--tint);
  border: 1px solid var(--line);
  opacity: 0.45;
  transform: scale(0.88);
  transition: opacity 0.4s ease, transform 0.4s ease;
  cursor: zoom-in;
  font: inherit;
}
.carousel-card-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.carousel-card.is-active { opacity: 1; transform: scale(1); }
.carousel-card:hover,
.carousel-card:focus-visible { opacity: 0.85; }
.carousel-card.is-active:hover,
.carousel-card.is-active:focus-visible { opacity: 1; }

.carousel-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  z-index: 2;
}
.carousel-nav:hover { background: var(--navy); border-color: var(--navy); color: var(--paper); }
.carousel-nav--prev { left: 0.5rem; }
.carousel-nav--next { right: 0.5rem; }
@media (max-width: 640px) {
  .carousel-nav { display: none; }
}

/* Lightbox (image modal) */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  align-items: center;
  justify-content: center;
  background: rgba(10, 10, 10, 0.92);
  padding: 2rem;
  z-index: 100;
}
.lightbox.is-open { display: flex; }
.lightbox-img {
  display: block;
  max-width: 100%;
  max-height: 100%;
  border: 1px solid var(--line);
}
.lightbox-close {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: transparent;
  color: var(--paper);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}
.lightbox-close:hover { background: var(--navy); border-color: var(--navy); }
body.lightbox-open { overflow: hidden; }

/* Sticky Messenger/WhatsApp bubbles */
.float-contact {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.float-bubble {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--paper);
  box-shadow: 0 4px 16px rgba(10, 10, 10, 0.28);
  transition: transform 0.15s ease;
}
.float-bubble:hover { transform: scale(1.08); }
.float-bubble svg { width: 30px; height: 30px; }
.float-bubble--messenger { background: #0084ff; }
.float-bubble--whatsapp { background: #25d366; }
@media (max-width: 640px) {
  .float-contact { right: 1rem; bottom: 1rem; gap: 0.6rem; }
  .float-bubble { width: 48px; height: 48px; }
  .float-bubble svg { width: 26px; height: 26px; }
}

.service-detail { margin-top: 2.5rem; }
.service-detail:first-of-type { margin-top: 1.5rem; }
.service-detail ul { color: var(--ink-soft); padding-left: 1.2rem; }
.service-detail li { margin-bottom: 0.35rem; }

.notice {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--stone);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 0.85rem 0;
  margin: 1.5rem 0;
}
.portfolio-thumb {
  height: 140px;
  border: 1px solid var(--line);
  background: var(--tint);
  margin-bottom: 1rem;
}

.map-embed { margin-top: 1.5rem; }
.map-embed iframe { border: 1px solid var(--line); }

/* Footer */
.site-footer { background: var(--navy-deep); color: var(--stone); }
@media (min-width: 1024px) {
  .site-footer { margin-left: var(--sidebar); }
}
.footer-inner { padding: 2.5rem 1.5rem; text-align: center; }
.footer-mark { width: 40px; height: auto; margin-bottom: 0.75rem; }
.footer-inner p { margin: 0.3rem 0; }
.footer-inner a { color: var(--paper); }
.footer-copyright { color: var(--stone); font-family: var(--font-mono); font-size: 0.75rem; margin-top: 1rem; }