:root {
  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --surface: #ffffff;
  --surface-2: #f5f5f7;
  --border: #d2d2d7;
  --text: #1d1d1f;
  --text-muted: #6e6e73;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --danger: #e5484d;
  --radius: 20px;
  --radius-pill: 980px;
  --max-width: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --bg-alt: #000000;
    --surface: #1d1d1f;
    --surface-2: #161617;
    --border: #424245;
    --text: #f5f5f7;
    --text-muted: #86868b;
    --accent: #2997ff;
    --accent-hover: #47a9ff;
  }
}

:root[data-theme="dark"] {
  --bg: #000000;
  --bg-alt: #000000;
  --surface: #1d1d1f;
  --surface-2: #161617;
  --border: #424245;
  --text: #f5f5f7;
  --text-muted: #86868b;
  --accent: #2997ff;
  --accent-hover: #47a9ff;
}

:root[data-theme="light"] {
  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --surface: #ffffff;
  --surface-2: #f5f5f7;
  --border: #d2d2d7;
  --text: #1d1d1f;
  --text-muted: #6e6e73;
  --accent: #0071e3;
  --accent-hover: #0077ed;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.47;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 22px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

@media (prefers-color-scheme: dark) {
  .site-header { background: rgba(0, 0, 0, 0.8); }
}

:root[data-theme="dark"] .site-header { background: rgba(0, 0, 0, 0.8); }
:root[data-theme="light"] .site-header { background: rgba(255, 255, 255, 0.8); }

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}

.logo {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 2px;
}

.logo .dot { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 34px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-weight: 400;
  font-size: 0.8rem;
  color: var(--text);
  opacity: 0.8;
  transition: opacity 0.2s;
}

.nav-links a:hover { opacity: 1; }

.nav-cta {
  background: var(--accent) !important;
  color: #fff !important;
  padding: 8px 18px !important;
  border-radius: 999px !important;
  font-weight: 600 !important;
  opacity: 1 !important;
  transition: background 0.2s, transform 0.2s;
}

.nav-cta:hover {
  background: var(--accent-hover) !important;
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  cursor: pointer;
  font-size: 0.95rem;
  margin-left: 24px;
  flex-shrink: 0;
}

.theme-toggle:hover { border-color: var(--text-muted); }

.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: inline; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: inline; }
}

/* Hero */
.hero {
  padding: 96px 0 80px;
  text-align: center;
}

.hero .container {
  display: block;
}

.eyebrow {
  display: inline-block;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 1.07;
  margin: 0 0 20px;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.hero h1 .accent { color: var(--accent); }

.hero p.lead {
  color: var(--text-muted);
  font-size: 1.3rem;
  margin: 0 auto 36px;
  max-width: 560px;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 64px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  font-weight: 400;
  font-size: 1.02rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, opacity 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover { background: var(--accent-hover); }

.btn-ghost {
  background: none;
  color: var(--accent);
  padding: 12px 4px;
}

.btn-ghost::after { content: '\203A'; margin-left: 2px; transition: transform 0.2s; display: inline-block; }
.btn-ghost:hover::after { transform: translateX(3px); }

.hero-visual {
  max-width: 780px;
  margin: 0 auto;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: left;
}

.hero-visual .stat-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.stat-card {
  background: var(--surface);
  border-radius: 14px;
  padding: 20px;
  border: 1px solid var(--border);
  text-align: center;
}

.stat-card .num {
  font-size: 2.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}

.stat-card .label {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 2px;
}

.code-window {
  background: #1d1d1f;
  border-radius: 14px;
  padding: 20px 22px;
  font-family: 'SF Mono', 'Consolas', 'Courier New', monospace;
  font-size: 0.82rem;
  color: #f5f5f7;
  overflow-x: auto;
}

.code-window .dim { color: #86868b; }

/* Sections */
section { padding: 100px 0; }

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-head .eyebrow { display: block; margin-bottom: 8px; }

.section-head h2 {
  font-size: clamp(2rem, 3.6vw, 2.8rem);
  margin: 0 0 14px;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.section-head p { color: var(--text-muted); font-size: 1.15rem; }

.section-alt { background: var(--bg-alt); }

/* Grid cards */
.grid {
  display: grid;
  gap: 20px;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.icon-badge {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  font-size: 1.2rem;
}

.card h3 { margin: 0 0 10px; font-size: 1.25rem; font-weight: 600; letter-spacing: -0.01em; }
.card p { color: var(--text-muted); margin: 0; font-size: 0.98rem; }

/* Portfolio */
.portfolio-card { overflow: hidden; padding: 0; }

.portfolio-card .thumb {
  height: 190px;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-weight: 600;
  overflow: hidden;
}

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

.portfolio-card .body { padding: 26px; }

.tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }

.tag {
  font-size: 0.74rem;
  font-weight: 600;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
}

/* Testimonials */
.testimonial-card p.quote {
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: 22px;
  font-weight: 400;
}

.testimonial-author { display: flex; align-items: center; gap: 12px; }

.avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--text);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.testimonial-author .name { font-weight: 600; font-size: 0.95rem; }
.testimonial-author .role { color: var(--text-muted); font-size: 0.85rem; }

/* Team */
.team-card { text-align: center; }
.team-card .photo {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: var(--bg-alt);
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1.3rem;
  color: var(--text);
  border: 1px solid var(--border);
}

/* Contact */
.contact-wrap {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: start;
}

.contact-info .item {
  display: flex;
  gap: 16px;
  margin-bottom: 26px;
  align-items: flex-start;
}

.contact-info .item .ic {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info .item .label { color: var(--text-muted); font-size: 0.85rem; }
.contact-info .item .value { font-weight: 600; }

form.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.field { margin-bottom: 18px; }

.field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-muted);
}

.field input,
.field textarea {
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.alert {
  padding: 14px 18px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  font-weight: 600;
}

.alert-success {
  background: rgba(41, 181, 115, 0.12);
  color: #1a8f56;
  border: 1px solid rgba(41, 181, 115, 0.3);
}

.alert-error {
  background: rgba(229, 72, 77, 0.12);
  color: var(--danger);
  border: 1px solid rgba(229, 72, 77, 0.3);
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 0 24px;
  color: var(--text-muted);
  font-size: 0.78rem;
  background: var(--bg-alt);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.footer-top .logo { font-size: 0.95rem; }

.footer-links { display: flex; gap: 20px; list-style: none; padding: 0; margin: 0; }
.footer-links a { font-size: 0.8rem; }

.social-links { display: flex; gap: 10px; }

.social-links a {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.visit-counter::before { content: '\00b7\0020'; }

@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links, .nav-cta { display: none; }
  .menu-toggle { display: block; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
  .hero { padding: 64px 0 56px; }
}

.nav-links.open {
  display: flex;
  position: absolute;
  top: 52px;
  left: 0;
  right: 0;
  background: var(--bg);
  flex-direction: column;
  gap: 4px;
  padding: 16px 22px;
  border-bottom: 1px solid var(--border);
}

.nav-links.open a { padding: 10px 0; }

/* Carousel */
.carousel-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

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

.filter-btn.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.carousel-viewport { overflow: hidden; width: 100%; transition: height 0.35s ease; }

.carousel-track {
  display: flex;
  align-items: flex-start;
  width: 100%;
  transition: transform 0.45s ease;
}

.carousel-item {
  min-width: 0;
}

.carousel-page {
  flex: 0 0 100%;
  width: 100%;
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.carousel-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  margin-top: 36px;
}

.carousel-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color 0.2s;
}

.carousel-arrow:hover:not(:disabled) { border-color: var(--text-muted); }

.carousel-arrow:disabled {
  opacity: 0.3;
  cursor: default;
}

.carousel-dots {
  display: flex;
  align-items: center;
  gap: 8px;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--border);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: width 0.2s, background 0.2s;
}

.carousel-dot.active {
  width: 22px;
  background: var(--accent);
}

.carousel-nav[hidden] { display: none; }

@media (max-width: 960px) {
  .carousel-page { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .carousel-page { grid-template-columns: 1fr; gap: 16px; }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}