/* ============================================================
   WisRoot Tech — harmonized Matrix theme
   One brand green, one neon accent, sans-serif body, generous
   whitespace, Matrix rain confined to the hero.
   ============================================================ */

:root {
  --bg: #000000;
  --bg-soft: #03100a;
  --bg-panel: #050f0b;
  --bg-panel-2: #07181010;

  --line: #0e2a1c;
  --line-strong: #144934;

  --brand: #00A896;        /* single primary green */
  --brand-dim: #0d7766;
  --neon: #5cffb1;         /* one accent for highlights */
  --neon-glow: rgba(92, 255, 177, 0.35);

  --text: #d8efe4;
  --text-dim: #8aa89c;
  --text-mute: #5a7466;
  --white: #f3fff8;

  --sans: 'Inter', 'Noto Sans TC', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', 'Courier New', monospace;

  --nav-h: 68px;
  --maxw: 1180px;
  --section-y: 140px;
}

/* Chinese language uses the TC sans as primary */
html[lang^="zh"] body { font-family: 'Noto Sans TC', 'Inter', sans-serif; }

* { box-sizing: border-box; }
html { background: #000; }
body {
  margin: 0; padding: 0;
  background: transparent; /* let the fixed matrix canvas show through */
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Full-page matrix canvas: fixed behind every section */
#matrix-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  opacity: 0.6;             /* bumped so the rain reads clearly on black */
  pointer-events: none;
}

a { color: var(--brand); text-decoration: none; transition: color 180ms; }
a:hover { color: var(--neon); }

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

h1, h2, h3, h4 {
  color: var(--white);
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
  line-height: 1.2;
  font-weight: 700;
}
h2 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); }
h3 { font-size: clamp(1.25rem, 1.8vw, 1.45rem); }

p { color: var(--text-dim); margin: 0 0 1em; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

/* ============================== NAV ============================== */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 50;
  background: rgba(0, 0, 0, 0);
  backdrop-filter: blur(0px);
  transition: background 220ms, backdrop-filter 220ms, border-color 220ms;
  border-bottom: 1px solid transparent;
}
.site-nav.scrolled {
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
}
.nav-inner {
  height: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-brand { display: flex; align-items: center; gap: 10px; }
.nav-brand img { height: 28px; width: auto; opacity: 0.95; }
.nav-brand-text {
  font-family: var(--mono);
  font-size: 0.9rem;
  letter-spacing: 0.22em;
  color: var(--white);
}
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  color: var(--text-dim);
  font-size: 0.9rem;
  font-weight: 500;
}
.nav-links a:hover { color: var(--white); }
.nav-cta {
  border: 1px solid var(--line-strong);
  padding: 8px 18px;
  color: var(--neon) !important;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: all 180ms;
}
.nav-cta:hover {
  background: var(--brand);
  color: #001a14 !important;
  border-color: var(--brand);
}
.lang-switch {
  background: none;
  border: 1px solid var(--line);
  color: var(--text-dim);
  padding: 6px 12px;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 180ms;
  display: inline-flex; gap: 4px;
}
.lang-switch:hover { border-color: var(--brand); color: var(--neon); }
.lang-switch .lang-sep { color: var(--text-mute); }
.lang-switch[data-active="en"] .lang-en { color: var(--neon); }
.lang-switch[data-active="zh"] .lang-zh { color: var(--neon); }

.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--brand); margin: 4px 0; }

/* ============================== HERO ============================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  isolation: isolate;
  background: transparent;
}
/* Soft vignette focuses attention on the slogan while letting rain bleed at edges */
.hero-vignette {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 50%, rgba(0,0,0,0.25) 0%, rgba(0,0,0,0.55) 60%, rgba(0,0,0,0.78) 100%);
}

/* === Left-aligned hero — modern, content-led === */
.hero-content {
  position: relative; z-index: 2;
  text-align: left;
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
  padding: 120px 28px 80px;
}

/* Boot lines — terminal preamble above the slogan */
.hero-boot {
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--brand-dim);
  margin-bottom: 22px;
  line-height: 1.9;
}
.hero-boot p { margin: 0; color: var(--brand-dim); }

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 24px;
}

/* === Slogan: dominant, white, slight glow === */
.hero-slogan {
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(2.4rem, 7vw, 5.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin: 0 0 28px;
  min-height: 1.1em;
  max-width: 14ch;
  text-shadow: 0 0 28px rgba(255, 255, 255, 0.18);
}
#typewriter-text {
  color: #ffffff;
}
.cursor-blink {
  display: inline-block;
  width: 0.45ch; height: 0.9em;
  background: #00FF41;
  box-shadow: 0 0 14px rgba(0, 255, 65, 0.6);
  vertical-align: -0.05em;
  margin-left: 8px;
  animation: blink 0.85s steps(1) infinite;
}
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.hero-sub {
  max-width: 640px;
  margin: 0 0 40px;
  color: var(--text-dim);
  font-size: clamp(1rem, 1.15vw, 1.1rem);
  line-height: 1.7;
}
.hero-cta {
  display: flex; justify-content: flex-start; gap: 18px; flex-wrap: wrap;
}

/* Buttons — alt-version palette: dark teal default, neon green on hover */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px;
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  border: 1px solid #004D40;
  transition: all 220ms ease;
  cursor: pointer;
}
.btn-primary {
  background: #004D40;
  color: #ffffff;
}
.btn-primary:hover {
  background: #00FF41;
  border-color: #00FF41;
  color: #000000;
  box-shadow: 0 0 18px rgba(0, 255, 65, 0.45);
}
.btn-ghost {
  background: transparent;
  color: #00D9B5;
  border-color: #00A896;
}
.btn-ghost:hover {
  background: #004D40;
  color: #ffffff;
  border-color: #004D40;
}
.btn-lg { padding: 16px 32px; font-size: 1rem; }

.hero-scroll {
  position: absolute;
  bottom: 32px; left: 50%; transform: translateX(-50%);
  z-index: 2;
  color: var(--text-mute);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  animation: bob 2.4s ease-in-out infinite;
}
@keyframes bob {
  0%, 100% { transform: translate(-50%, 0); opacity: 0.6; }
  50% { transform: translate(-50%, 6px); opacity: 1; }
}

/* ============================== SECTIONS ============================== */
section.block {
  padding: var(--section-y) 0;
  background: rgba(0, 0, 0, 0.62);  /* translucent — matrix bleeds through */
  border-top: 1px solid var(--line);
  position: relative;
}
section.block.alt { background: rgba(3, 16, 10, 0.74); }
section.block.block-narrow { padding: 100px 0; }

.section-eyebrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  color: var(--brand);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title { margin-bottom: 20px; max-width: 760px; }
.section-lede {
  max-width: 720px;
  font-size: 1.05rem;
  color: var(--text-dim);
  margin-bottom: 60px;
  line-height: 1.7;
}

.reveal {
  opacity: 0; transform: translateY(20px);
  transition: opacity 700ms ease, transform 700ms ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ============================== PRODUCTS ============================== */
.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.prod-card {
  background: rgba(5, 15, 11, 0.72);
  backdrop-filter: blur(6px);
  border: 1px solid var(--line);
  padding: 36px 32px;
  display: flex; flex-direction: column;
  transition: border-color 240ms, transform 240ms, box-shadow 240ms;
}
.prod-card:hover {
  border-color: var(--brand);
  transform: translateY(-3px);
  box-shadow: 0 0 0 1px rgba(0,168,150,0.15), 0 12px 40px rgba(0,168,150,0.08);
}
.prod-card.featured {
  background:
    linear-gradient(180deg, rgba(0,168,150,0.10), transparent 60%),
    rgba(5, 15, 11, 0.78);
  border-color: var(--line-strong);
}
.prod-icon {
  color: var(--brand);
  margin-bottom: 24px;
}
.prod-card:hover .prod-icon { color: var(--neon); }
.prod-card h3 { color: var(--white); margin-bottom: 12px; }
.prod-card p {
  flex: 1;
  font-size: 0.95rem;
  margin-bottom: 24px;
}
.prod-tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--brand-dim);
}
.prod-stats {
  display: flex; gap: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.prod-stats > div { display: flex; flex-direction: column; }
.stat-val {
  font-family: var(--mono);
  color: var(--neon);
  font-size: 1.15rem;
  font-weight: 600;
}
.stat-lbl {
  font-family: var(--mono);
  color: var(--text-mute);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-top: 2px;
}

/* ============================== CAPABILITIES ============================== */
.cap-strip {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  background: rgba(5, 15, 11, 0.55);
  backdrop-filter: blur(6px);
  margin-bottom: 80px;
}
.cap-item {
  padding: 24px 16px;
  text-align: center;
  border-right: 1px solid var(--line);
}
.cap-item:last-child { border-right: 0; }
.cap-key {
  display: block;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--neon);
  margin-bottom: 4px;
}
.cap-val {
  display: block;
  font-size: 0.78rem;
  color: var(--text-mute);
  letter-spacing: 0.04em;
}
.cap-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.pillar h4 {
  font-family: var(--mono);
  color: var(--brand);
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.pillar p {
  font-size: 0.95rem;
  color: var(--text);
  margin: 0;
}

/* ============================== APPLICATIONS ============================== */
.app-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.app-tile {
  background: rgba(5, 15, 11, 0.7);
  backdrop-filter: blur(6px);
  border: 1px solid var(--line);
  padding: 32px 24px;
  text-align: left;
  transition: border-color 240ms, background 240ms;
}
.app-tile:hover {
  border-color: var(--brand);
  background: rgba(7, 22, 16, 0.85);
}
.app-icon { color: var(--brand); margin-bottom: 18px; }
.app-tile:hover .app-icon { color: var(--neon); }
.app-tile h4 {
  font-size: 1rem;
  color: var(--white);
  margin-bottom: 8px;
}
.app-tile p {
  font-size: 0.86rem;
  color: var(--text-dim);
  margin: 0;
  line-height: 1.6;
}

/* ============================== TEAM ============================== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
@media (max-width: 1100px) {
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}
.member {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 28px;
  align-items: start;
}
.member-avatar img,
.member-avatar svg {
  width: 120px; height: 120px;
  display: block;
}
.member-avatar img {
  object-fit: cover;
  object-position: center;
}
.member-avatar img.crop-top { object-position: center top; }
.member-name { color: var(--white); margin-bottom: 4px; font-size: 1.15rem; }
.member-role {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--neon);
  margin-bottom: 14px;
  text-transform: uppercase;
}
.member-bio {
  font-size: 0.92rem;
  color: var(--text-dim);
  margin: 0;
  line-height: 1.7;
}

/* ============================== CONTACT ============================== */
.contact-block .contact-inner {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.contact-block .section-eyebrow {
  display: inline-block;
}
.contact-block .section-title {
  margin: 0 auto 20px;
}
.contact-block .section-lede {
  margin: 0 auto 40px;
}

/* ============================== FOOTER ============================== */
footer.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.78);
  padding: 40px 0 32px;
  position: relative;
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 18px;
}
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand img { height: 28px; opacity: 0.85; }
.footer-brand span {
  font-family: var(--mono);
  letter-spacing: 0.16em;
  color: var(--text-dim);
  font-size: 0.85rem;
}
.footer-meta {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-mute);
  letter-spacing: 0.06em;
}

/* ============================== RESPONSIVE ============================== */
@media (max-width: 960px) {
  :root { --section-y: 90px; }
  .card-grid-3, .cap-pillars { grid-template-columns: 1fr; }
  .cap-strip { grid-template-columns: repeat(2, 1fr); }
  .cap-item { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .cap-item:nth-child(2n) { border-right: 0; }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: 1fr; }

  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: rgba(0,0,0,0.96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    padding: 16px 24px 24px;
    transform: translateY(-12px);
    opacity: 0; pointer-events: none;
    transition: transform 200ms, opacity 200ms;
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px 0; width: 100%; }
  .nav-links a.nav-cta { text-align: center; }
  .nav-toggle { display: block; }
  .lang-switch { width: 100%; justify-content: center; margin-top: 8px; }
}
@media (max-width: 600px) {
  .app-grid { grid-template-columns: 1fr; }
  .cap-strip { grid-template-columns: 1fr; }
  .cap-item { border-right: 0; }
  .member { grid-template-columns: 1fr; text-align: center; }
  .member-avatar { margin: 0 auto; }
}

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