/* =====================================================================
   LLU TECH — Premium Smart Home Automation
   Stylesheet
   ===================================================================== */

/* ---------- Tokens ---------- */
:root {
  --primary: #0F172A;
  --secondary: #111827;
  --accent: #00D4FF;
  --highlight: #14F195;
  --text: #F8FAFC;
  --muted: #94A3B8;
  --bg: #020617;
  --card: rgba(255, 255, 255, 0.05);
  --card-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  --grad: linear-gradient(135deg, #00D4FF, #14F195);
  --grad-soft: linear-gradient(135deg, rgba(0, 212, 255, 0.16), rgba(20, 241, 149, 0.16));

  --maxw: 1240px;
  --radius: 18px;
  --radius-sm: 12px;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out-slow: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);

  --shadow: 0 30px 60px -25px rgba(0, 0, 0, 0.7);
  --glow: 0 0 0 1px rgba(0, 212, 255, 0.18), 0 24px 60px -20px rgba(0, 212, 255, 0.25);

  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Animated night-sky starfield (sits above the gradient, below content) */
#starfield {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  pointer-events: none;
}

/* Ambient backdrop */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(60% 50% at 80% -5%, rgba(0, 212, 255, 0.10), transparent 60%),
    radial-gradient(55% 45% at 10% 110%, rgba(20, 241, 149, 0.08), transparent 60%),
    var(--bg);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.4;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; }

::selection { background: rgba(0, 212, 255, 0.3); color: #fff; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.12); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.2); }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.section { padding: clamp(72px, 11vw, 140px) 0; position: relative; }

.skip-link {
  position: absolute; left: -999px; top: 12px; z-index: 200;
  background: var(--accent); color: #001018; padding: 10px 18px; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { left: 12px; }

/* ---------- Typography helpers ---------- */
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--accent);
}
.eyebrow-line { width: 34px; height: 1px; background: var(--grad); display: inline-block; }

.section-title {
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  line-height: 1.08; font-weight: 800; letter-spacing: -0.03em;
  margin: 18px 0 0;
}
.section-lead {
  color: var(--muted); font-size: clamp(1rem, 1.4vw, 1.15rem);
  max-width: 56ch; margin-top: 20px;
}
.section-lead.center { margin-left: auto; margin-right: auto; text-align: center; }

.section-head { text-align: center; max-width: 760px; margin: 0 auto clamp(48px, 6vw, 72px); display: flex; flex-direction: column; align-items: center; }

/* ---------- Glass ---------- */
.glass {
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 15px 28px; border-radius: 999px; font-weight: 600; font-size: 0.96rem;
  letter-spacing: -0.01em; position: relative; isolation: isolate;
  transition: transform 0.18s var(--ease-out), box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
  white-space: nowrap;
}
.btn svg { transition: transform 0.25s var(--ease-out); }
.btn:hover svg { transform: translateX(3px); }
.btn:active { transform: scale(0.97); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.btn-primary { background: var(--grad); color: #001016; box-shadow: 0 8px 22px -14px rgba(0, 212, 255, 0.4); }
.btn-primary::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; z-index: -1;
  background: linear-gradient(135deg, #14F195, #00D4FF); opacity: 0; transition: opacity 0.3s ease;
}
.btn-primary:hover { box-shadow: 0 10px 26px -14px rgba(20, 241, 149, 0.38); transform: translateY(-2px); }
.btn-primary:hover::before { opacity: 1; }
.btn-primary:active { transform: scale(0.97); }

.btn-ghost { background: rgba(255, 255, 255, 0.04); color: var(--text); border: 1px solid var(--border-strong); backdrop-filter: blur(8px); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.09); border-color: rgba(0, 212, 255, 0.4); transform: translateY(-2px); }

.btn-block { width: 100%; }

/* ============ NAVBAR ============ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.4s ease, backdrop-filter 0.4s ease, border-color 0.4s ease, padding 0.3s ease;
  border-bottom: 1px solid transparent;
  padding: 8px 0;
}
.navbar.scrolled {
  background: rgba(2, 6, 23, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-mark { display: grid; place-items: center; transition: transform 0.4s var(--ease-out); }
.brand:hover .brand-mark { transform: rotate(8deg) scale(1.05); }
.brand-text { font-weight: 800; font-size: 1.32rem; letter-spacing: -0.02em; }
.brand-text-accent {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; margin-left: 2px;
}

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 9px 16px; font-size: 0.92rem; font-weight: 500; color: var(--muted);
  border-radius: 999px; position: relative; transition: color 0.25s ease, background 0.25s ease;
}
.nav-links a:not(.nav-cta):hover { color: var(--text); }
.nav-links a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 4px; height: 1px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform 0.3s var(--ease-out);
}
.nav-links a:not(.nav-cta):hover::after { transform: scaleX(1); }
.nav-cta {
  background: var(--grad); color: #001016 !important; font-weight: 600;
  margin-left: 8px; box-shadow: 0 6px 16px -12px rgba(0, 212, 255, 0.4);
}
.nav-cta:hover { transform: translateY(-1px); }

.nav-toggle { display: none; width: 44px; height: 44px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; border-radius: 10px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.3s var(--ease-out), opacity 0.2s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ HERO ============ */
.hero {
  position: relative; min-height: 100svh; display: flex; align-items: center;
  padding-top: 100px; padding-bottom: 80px; overflow: hidden;
}
.hero-media { position: absolute; inset: 0; z-index: -1; }
.hero-video { width: 100%; height: 100%; object-fit: cover; }
.hero-fallback {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(80% 70% at 70% 20%, rgba(0, 212, 255, 0.22), transparent 55%),
    radial-gradient(70% 60% at 20% 90%, rgba(20, 241, 149, 0.18), transparent 55%),
    linear-gradient(160deg, #0a1228, #020617);
}
.hero-overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(to bottom, rgba(2, 6, 23, 0.55) 0%, rgba(2, 6, 23, 0.35) 35%, rgba(2, 6, 23, 0.85) 88%, var(--bg) 100%),
    linear-gradient(105deg, rgba(2, 6, 23, 0.75) 0%, rgba(2, 6, 23, 0.2) 60%);
}
.hero-grid {
  position: absolute; inset: 0; opacity: 0.5;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(70% 60% at 50% 40%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(70% 60% at 50% 40%, #000 30%, transparent 80%);
}

.hero-content { position: relative; max-width: 940px; }
.hero-title {
  font-size: clamp(2.6rem, 7vw, 5.2rem); line-height: 1.02; font-weight: 800;
  letter-spacing: -0.04em; margin: 22px 0 0;
}
.hero-title span { display: block; }
.hero-sub { color: #cbd5e1; font-size: clamp(1.05rem, 1.7vw, 1.4rem); max-width: 60ch; margin-top: 8px; font-weight: 300; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }

/* Scroll indicator */
.scroll-indicator {
  position: absolute; left: 50%; bottom: 30px; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--muted); font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase;
}
.scroll-mouse { width: 24px; height: 38px; border: 1.5px solid rgba(255, 255, 255, 0.3); border-radius: 14px; display: flex; justify-content: center; padding-top: 7px; }
.scroll-wheel { width: 3px; height: 7px; border-radius: 3px; background: var(--accent); animation: wheel 1.8s var(--ease-in-out-slow) infinite; }
@keyframes wheel { 0% { opacity: 0; transform: translateY(-4px); } 40% { opacity: 1; } 80%, 100% { opacity: 0; transform: translateY(9px); } }

/* ============ TRUST ============ */
.trust { padding: 34px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: rgba(255, 255, 255, 0.015); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.trust-item { display: flex; align-items: center; gap: 14px; justify-content: center; color: var(--text); font-weight: 500; }
.trust-item svg { width: 28px; height: 28px; color: var(--accent); flex-shrink: 0; }
.trust-item span { font-size: 0.98rem; }

/* ============ ABOUT ============ */
.about-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(40px, 6vw, 88px); align-items: center; }
.about-visual { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); }
.about-visual img { width: 100%; aspect-ratio: 4 / 4.5; object-fit: cover; }
.about-badge {
  position: absolute; left: 22px; bottom: 22px; border-radius: var(--radius-sm); padding: 16px 22px;
  display: flex; flex-direction: column; box-shadow: var(--glow);
}
.about-badge-num { font-size: 2rem; font-weight: 800; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.about-badge-label { font-size: 0.78rem; color: var(--muted); margin-top: 4px; letter-spacing: 0.04em; }

.about-pillars { display: grid; grid-template-columns: 1fr 1fr; gap: 26px 30px; margin-top: 40px; }
.about-pillars h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 6px; }
.about-pillars h3::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 2px; background: var(--grad); margin-right: 10px; vertical-align: middle; }
.about-pillars p { color: var(--muted); font-size: 0.94rem; }

/* ============ SERVICES ============ */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.service-card {
  border-radius: var(--radius); padding: 30px 26px; position: relative; overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s ease, background 0.4s ease, box-shadow 0.4s ease;
}
.service-card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: var(--grad); opacity: 0; transition: opacity 0.4s ease;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
}
.service-card::after {
  content: ""; position: absolute; top: -40%; right: -40%; width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.16), transparent 70%);
  opacity: 0; transition: opacity 0.4s ease;
}
.service-card:hover { transform: translateY(-8px); background: var(--card-hover); box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.8); }
.service-card:hover::before, .service-card:hover::after { opacity: 1; }
.service-icon {
  width: 54px; height: 54px; border-radius: 14px; display: grid; place-items: center;
  background: var(--grad-soft); border: 1px solid var(--border); margin-bottom: 22px;
  transition: transform 0.4s var(--ease-out);
}
.service-icon svg { width: 28px; height: 28px; color: var(--accent); }
.service-card:hover .service-icon { transform: scale(1.08) rotate(-4deg); }
.service-card h3 { font-size: 1.16rem; font-weight: 700; margin-bottom: 9px; letter-spacing: -0.01em; }
.service-card p { color: var(--muted); font-size: 0.92rem; }

.services-note { text-align: center; margin-top: 38px; color: var(--muted); font-size: 0.92rem; letter-spacing: 0.02em; }

/* ============ FEATURES ============ */
.features-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(40px, 6vw, 90px); align-items: center; }
.features-visual { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow); }
.features-visual img { width: 100%; aspect-ratio: 4 / 4.3; object-fit: cover; }
.float-tag {
  position: absolute; padding: 9px 16px; border-radius: 999px; font-size: 0.82rem; font-weight: 600;
  color: var(--text); white-space: nowrap;
  background: rgba(2, 6, 23, 0.55); border: 1px solid var(--border-strong);
  box-shadow: 0 8px 24px -16px rgba(0, 0, 0, 0.8);
}
.feature-list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 24px; margin: 34px 0 38px; }
.feature-list li { display: flex; align-items: center; gap: 13px; font-weight: 500; font-size: 1rem; }
.fl-dot { width: 22px; height: 22px; border-radius: 7px; background: var(--grad-soft); border: 1px solid var(--border); flex-shrink: 0; position: relative; }
.fl-dot::after { content: ""; position: absolute; inset: 0; margin: auto; width: 7px; height: 7px; border-radius: 2px; background: var(--grad); }

/* ============ WHY ============ */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.why-card { border-radius: var(--radius); padding: 32px 28px; transition: transform 0.4s var(--ease-out), background 0.4s ease, border-color 0.4s ease; position: relative; overflow: hidden; }
.why-card:hover { transform: translateY(-6px); background: var(--card-hover); border-color: rgba(0, 212, 255, 0.25); }
.why-num { font-size: 0.9rem; font-weight: 700; letter-spacing: 0.1em; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.why-card h3 { font-size: 1.2rem; font-weight: 700; margin: 14px 0 9px; letter-spacing: -0.01em; }
.why-card p { color: var(--muted); font-size: 0.94rem; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 56px; padding: 40px 0 0; border-top: 1px solid var(--border); }
.stat { text-align: center; }
.stat-num { display: block; font-size: clamp(2.2rem, 4vw, 3rem); font-weight: 800; letter-spacing: -0.03em; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; line-height: 1; }
.stat-label { display: block; margin-top: 10px; color: var(--muted); font-size: 0.88rem; }

/* ============ GALLERY ============ */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 240px; gap: 18px; }
.gallery-item { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.gallery-item.tall { grid-row: span 2; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s var(--ease-out); }
.gallery-item::after {
  content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(2, 6, 23, 0.85), transparent 55%);
  opacity: 0.7; transition: opacity 0.4s ease;
}
.gallery-item figcaption {
  position: absolute; left: 20px; bottom: 16px; z-index: 2; font-weight: 600; font-size: 1rem;
  transform: translateY(8px); opacity: 0; transition: transform 0.4s var(--ease-out), opacity 0.4s ease;
}
.gallery-item figcaption::before { content: ""; display: block; width: 26px; height: 2px; background: var(--grad); margin-bottom: 8px; }
.gallery-item:hover figcaption { transform: translateY(0); opacity: 1; }
.gallery-item:hover::after { opacity: 0.9; }

@media (hover: hover) and (pointer: fine) {
  .gallery-item:hover img { transform: scale(1.07); }
}

/* ============ PROCESS ============ */
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; position: relative; }
.timeline::before {
  content: ""; position: absolute; top: 7px; left: 8%; right: 8%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.5), rgba(20, 241, 149, 0.5), transparent);
}
.timeline-step { position: relative; padding-top: 38px; }
.timeline-dot { position: absolute; top: 0; left: 0; width: 15px; height: 15px; border-radius: 50%; background: var(--bg); border: 2px solid var(--accent); box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.15); }
.timeline-dot::after { content: ""; position: absolute; inset: 3px; border-radius: 50%; background: var(--grad); }
.timeline-num { font-size: 0.82rem; font-weight: 700; letter-spacing: 0.14em; color: var(--accent); }
.timeline-step h3 { font-size: 1.25rem; font-weight: 700; margin: 8px 0 9px; letter-spacing: -0.01em; }
.timeline-step p { color: var(--muted); font-size: 0.94rem; }

/* ============ TESTIMONIALS ============ */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.testimonial-card { border-radius: var(--radius); padding: 32px 30px; display: flex; flex-direction: column; gap: 18px; transition: transform 0.4s var(--ease-out), border-color 0.4s ease; }
.testimonial-card:hover { transform: translateY(-6px); border-color: rgba(0, 212, 255, 0.22); }
.stars { color: var(--highlight); letter-spacing: 3px; font-size: 1rem; }
.testimonial-card blockquote { font-size: 1.02rem; line-height: 1.7; color: #e2e8f0; font-weight: 300; }
.testimonial-card figcaption { display: flex; align-items: center; gap: 14px; margin-top: auto; }
.t-avatar { width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: 0.88rem; color: #001016; background: var(--grad); flex-shrink: 0; }
.t-meta { display: flex; flex-direction: column; }
.t-meta strong { font-weight: 600; font-size: 0.96rem; }
.t-meta span { color: var(--muted); font-size: 0.82rem; }

/* ============ CONTACT ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(40px, 6vw, 80px); align-items: start; }
.contact-details { margin-top: 40px; display: flex; flex-direction: column; gap: 22px; }
.contact-details li { display: flex; align-items: flex-start; gap: 16px; }
.ci-icon { width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center; background: var(--grad-soft); border: 1px solid var(--border); flex-shrink: 0; }
.ci-icon svg { width: 22px; height: 22px; color: var(--accent); }
.contact-details li span:last-child { display: flex; flex-direction: column; color: var(--muted); font-size: 0.96rem; }
.contact-details strong { color: var(--text); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 3px; }
.contact-details a:hover { color: var(--accent); }

.contact-form-wrap { border-radius: var(--radius); padding: clamp(26px, 3vw, 40px); box-shadow: var(--shadow); }
.contact-form { display: flex; flex-direction: column; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field label { font-size: 0.82rem; font-weight: 600; color: var(--muted); letter-spacing: 0.04em; }
.field input, .field select, .field textarea {
  background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border); color: var(--text);
  padding: 13px 15px; border-radius: var(--radius-sm); font-size: 0.96rem; width: 100%;
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}
.field textarea { resize: vertical; min-height: 110px; }
.field input::placeholder, .field textarea::placeholder { color: #5b6b85; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: rgba(0, 212, 255, 0.55); background: rgba(0, 212, 255, 0.04);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.12);
}
.field input.invalid, .field select.invalid { border-color: #f87171; box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12); }
.select-wrap { position: relative; }
.select-wrap select { appearance: none; -webkit-appearance: none; cursor: pointer; padding-right: 42px; }
.select-wrap select option { background: var(--secondary); color: var(--text); }
.select-caret { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); width: 18px; height: 18px; color: var(--muted); pointer-events: none; }
.form-note { font-size: 0.9rem; min-height: 1.2em; }
.form-note.success { color: var(--highlight); }
.form-note.error { color: #f87171; }

/* ============ FOOTER ============ */
.footer { border-top: 1px solid var(--border); padding: clamp(56px, 7vw, 84px) 0 28px; background: rgba(255, 255, 255, 0.015); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; }
.footer-brand p { color: var(--muted); font-size: 0.92rem; margin-top: 16px; max-width: 32ch; }
.footer-col h4 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--text); margin-bottom: 18px; font-weight: 700; }
.footer-col ul { display: flex; flex-direction: column; gap: 11px; }
.footer-col a { color: var(--muted); font-size: 0.92rem; transition: color 0.2s ease, padding-left 0.25s var(--ease-out); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact li { color: var(--muted); font-size: 0.92rem; line-height: 1.6; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border); flex-wrap: wrap; }
.footer-bottom p { color: var(--muted); font-size: 0.86rem; }
.footer-tag { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; font-weight: 500; }

/* ============ BACK TO TOP ============ */
.to-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 90; width: 48px; height: 48px;
  border-radius: 50%; display: grid; place-items: center; background: var(--grad); color: #001016;
  box-shadow: 0 12px 30px -8px rgba(0, 212, 255, 0.6);
  opacity: 0; visibility: hidden; transform: translateY(16px) scale(0.9);
  transition: opacity 0.3s ease, transform 0.3s var(--ease-out), visibility 0.3s;
}
.to-top svg { width: 22px; height: 22px; }
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.to-top:hover { transform: translateY(-3px) scale(1.05); }
.to-top:active { transform: scale(0.95); }

/* ============ REVEAL ANIMATIONS ============ */
.reveal {
  opacity: 0; transform: translate3d(0, 22px, 0);
  transition: opacity 0.72s var(--ease-out-expo), transform 0.72s var(--ease-out-expo);
  will-change: opacity, transform;
}
.reveal.in { opacity: 1; transform: translate3d(0, 0, 0); }

.reveal-sweep {
  clip-path: inset(0 100% 0 0);
  transition: clip-path 1.05s var(--ease-in-out-slow);
}
.reveal-sweep.in { clip-path: inset(0 0 0 0); }

/* Word-by-word headline reveal */
.word-reveal { overflow: hidden; }
.word-reveal .w {
  display: inline-block; opacity: 0; transform: translateY(0.5em);
  filter: blur(10px);
  transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo), filter 0.7s var(--ease-out-expo);
  will-change: opacity, transform, filter;
}
.word-reveal.in .w { opacity: 1; transform: translateY(0); filter: blur(0); }

/* Branded fallback for missing images */
.img-fallback {
  background:
    radial-gradient(120% 120% at 30% 20%, rgba(0, 212, 255, 0.18), transparent 55%),
    radial-gradient(120% 120% at 80% 90%, rgba(20, 241, 149, 0.16), transparent 55%),
    linear-gradient(160deg, #0a1228, #07263a);
  min-height: 220px;
}

/* Idle drift */
.drift { animation: drift 7s ease-in-out infinite; animation-delay: var(--d, 0s); }
@keyframes drift {
  0%, 100% { transform: translate3d(0, 0, 0); }
  25% { transform: translate3d(5px, -6px, 0); }
  50% { transform: translate3d(-3px, -9px, 0); }
  75% { transform: translate3d(-6px, 3px, 0); }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .features-grid { grid-template-columns: 1fr; }
  .features-visual { order: -1; max-width: 560px; }
  .about-visual { max-width: 520px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
  .nav-links {
    position: fixed; inset: 0 0 0 auto; width: min(320px, 84vw);
    flex-direction: column; align-items: stretch; justify-content: flex-start;
    gap: 6px; padding: 100px 24px 40px; background: rgba(8, 13, 30, 0.96);
    backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px);
    border-left: 1px solid var(--border);
    transform: translateX(100%); transition: transform 0.42s var(--ease-out-expo); z-index: 95;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { padding: 14px 18px; font-size: 1.05rem; border-radius: var(--radius-sm); }
  .nav-links a:not(.nav-cta):hover { background: rgba(255, 255, 255, 0.05); }
  .nav-links a::after { display: none; }
  .nav-cta { margin-left: 0; margin-top: 10px; text-align: center; }
  .nav-toggle { display: flex; z-index: 96; }
  body.nav-open { overflow: hidden; }

  .trust-grid { grid-template-columns: 1fr 1fr; gap: 18px; }
  .trust-item { justify-content: flex-start; }
  .stats { grid-template-columns: 1fr 1fr; gap: 32px 18px; }
  .timeline { grid-template-columns: 1fr 1fr; gap: 32px 26px; }
  .timeline::before { display: none; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-auto-rows: 200px; }
}

@media (max-width: 560px) {
  .container { padding: 0 20px; }
  .services-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .about-pillars { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr 1fr; grid-auto-rows: 150px; }
  .gallery-item figcaption { opacity: 1; transform: none; font-size: 0.85rem; left: 14px; }
  .hero-cta .btn { flex: 1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .reveal, .word-reveal .w { opacity: 1 !important; transform: none !important; filter: none !important; }
  .reveal-sweep { clip-path: inset(0 0 0 0) !important; }
  .hero-video { display: none; }
  .drift { animation: none !important; }
}