/* ═══════════════════════════════════════════
   POLAR STUDIO — one-page design system
   ═══════════════════════════════════════════ */

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

:root {
  --bg: #f4f4f2;
  --bg-alt: #ffffff;
  --bg-dark: #0a0a0a;
  --ink: #111111;
  --ink-soft: #3a3a3a;
  --ink-mute: #6a6a6a;
  --line: #e4e3df;
  --line-dark: rgba(255,255,255,0.1);
  --accent: #2756ff;
  --font-display: 'Instrument Sans', sans-serif;
  --font-body: 'Inter', sans-serif;
  --nav-h: 72px;
  --radius: 10px;
  --radius-lg: 14px;
  --ease: cubic-bezier(.2,.6,.2,1);
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ═══ NAV ═══ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
  background: rgba(244,244,242,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  border-bottom-color: var(--line);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}
.nav-logo-icon {
  width: 26px; height: 30px;
  flex-shrink: 0;
}
.nav-logo-text {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.12em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: background 0.15s;
  cursor: pointer;
}
.nav-link:hover { background: rgba(0,0,0,0.05); }
.nav-dropdown { position: relative; }
.nav-dropdown-toggle {
  display: flex; align-items: center; gap: 6px;
  color: var(--ink);
  font-size: 14px; font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  user-select: none;
  transition: background 0.15s;
}
.nav-dropdown-toggle:hover { background: rgba(0,0,0,0.05); }
.nav-dropdown-toggle svg { width: 10px; height: 10px; transition: transform 0.2s; }
.nav-dropdown:hover .nav-dropdown-toggle svg { transform: rotate(180deg); }

.nav-dropdown-panel {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  min-width: 680px;
  gap: 20px;
  grid-template-columns: 1fr 1fr;
  box-shadow: 0 20px 60px rgba(0,0,0,0.12);
}
.nav-dropdown:hover .nav-dropdown-panel { display: grid; }

.mega-link {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  transition: background 0.15s;
}
.mega-link:hover { background: rgba(0,0,0,0.04); }
.mega-link-icon {
  width: 30px; height: 30px;
  background: var(--bg);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--ink);
}
.mega-link-icon svg { width: 16px; height: 16px; }
.mega-link strong { display: block; font-size: 13px; font-weight: 600; margin-bottom: 2px; }
.mega-link span { font-size: 12px; color: var(--ink-mute); line-height: 1.4; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  background: var(--ink);
  color: var(--bg-alt);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  transition: transform 0.15s, background 0.15s;
  border: 1px solid var(--ink);
}
.nav-cta:hover { background: #000; transform: translateY(-1px); }

.nav-mobile-toggle {
  display: none;
  color: var(--ink);
  padding: 6px;
}
.nav-mobile-toggle svg { width: 24px; height: 24px; }

.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  padding: 16px 24px 24px;
  gap: 2px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  color: var(--ink);
  font-size: 15px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.mobile-menu .mobile-cta {
  background: var(--ink);
  color: var(--bg-alt);
  text-align: center;
  border-radius: 100px;
  padding: 12px;
  border-bottom: none;
  margin-top: 12px;
  font-weight: 600;
}

/* ═══ BUTTONS ═══ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  transition: transform 0.15s, background 0.15s, border-color 0.15s;
  cursor: pointer;
  font-family: var(--font-body);
  border: 1px solid transparent;
  line-height: 1;
}
.btn-dark { background: var(--ink); color: var(--bg-alt); border-color: var(--ink); }
.btn-dark:hover { background: #000; transform: translateY(-1px); }
.btn-light { background: var(--bg-alt); color: var(--ink); border-color: var(--bg-alt); }
.btn-light:hover { transform: translateY(-1px); background: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--bg-alt); }
.btn-ghost-light { background: transparent; color: var(--bg-alt); border-color: rgba(255,255,255,0.35); }
.btn-ghost-light:hover { border-color: var(--bg-alt); background: rgba(255,255,255,0.08); }
.btn-arrow svg { width: 14px; height: 14px; transition: transform 0.2s; }
.btn-arrow:hover svg { transform: translateX(3px); }

/* ═══ CONTAINER & SECTIONS ═══ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}
.section { padding: 120px 0; scroll-margin-top: var(--nav-h); }
.section-sm { padding: 80px 0; }
.section-dark { background: var(--bg-dark); color: var(--bg-alt); }
.section-white { background: var(--bg-alt); }

.eyebrow {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 18px;
  display: block;
}
.section-dark .eyebrow { color: rgba(255,255,255,0.5); }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; line-height: 1.08; }
.h1 { font-size: clamp(42px, 7vw, 96px); }
.h2 { font-size: clamp(32px, 5vw, 64px); line-height: 1.04; }
.h3 { font-size: clamp(22px, 3vw, 34px); }
.h4 { font-size: 18px; }

.lead {
  font-size: 18px;
  color: var(--ink-mute);
  line-height: 1.6;
  max-width: 620px;
}
.section-dark .lead { color: rgba(255,255,255,0.65); }

/* ═══ HERO ═══ */
.hero {
  position: relative;
  min-height: 100vh;
  padding-top: var(--nav-h);
  background: var(--bg-dark);
  overflow: hidden;
  display: flex;
  align-items: center;
  color: var(--bg-alt);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('https://cdn.prod.website-files.com/6997f658db716226bd644707/69aceae29039897acb7a5aaf_74b25e06-738f-45b4-b7f6-a397340addb3.avif');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,10,10,0.6) 0%, rgba(10,10,10,0.4) 50%, rgba(10,10,10,0.8) 100%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 120px 32px 100px;
  width: 100%;
}
.hero .eyebrow {
  color: rgba(255,255,255,0.6);
  margin-bottom: 28px;
}
.hero h1 {
  color: var(--bg-alt);
  max-width: 900px;
  margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ═══ PRECISION GRID (stats + bento) ═══ */
.precision-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 14px;
  margin-top: 60px;
}
.p-card {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, transform 0.2s;
}
.p-card:hover { border-color: #c8c8c4; transform: translateY(-2px); }
.p-card-big {
  grid-column: 1 / 3;
  grid-row: 1 / 3;
  padding: 0;
  overflow: hidden;
}
.p-card-big-img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  display: block;
}
.p-card-big-body { padding: 28px 32px 32px; }
.p-card-eyebrow {
  font-size: 11px; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-mute); margin-bottom: 10px;
}
.p-card h3 { font-size: 20px; margin-bottom: 10px; }
.p-card p { font-size: 14px; color: var(--ink-mute); line-height: 1.6; }
.p-num {
  font-family: var(--font-display);
  font-size: clamp(42px, 5vw, 64px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 0.9;
  margin-bottom: auto;
}
.p-icon {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  border-radius: 10px;
  margin-bottom: auto;
}
.p-icon svg { width: 20px; height: 20px; }

.text-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600;
  color: var(--ink);
  margin-top: 14px;
  align-self: flex-start;
  border-bottom: 1.5px solid var(--ink);
  padding-bottom: 1px;
  transition: opacity 0.15s;
}
.text-link:hover { opacity: 0.5; }
.text-link svg { width: 12px; height: 12px; }

/* ═══ SERVICE BLOCKS (one per service in scroll) ═══ */
.service-block {
  padding: 120px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: var(--nav-h);
}
.service-block:first-child { border-top: none; }

.service-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.service-row.reverse { direction: rtl; }
.service-row.reverse > * { direction: ltr; }

.service-text { max-width: 520px; }
.service-text h2 { margin-bottom: 24px; }
.service-text .lead { margin-bottom: 32px; }

.service-features {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.service-features li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--ink-soft);
}
.service-features .check {
  width: 20px; height: 20px;
  background: var(--ink);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.service-features .check svg { width: 10px; height: 10px; color: var(--bg-alt); }

.service-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.service-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 100px;
  margin-bottom: 20px;
}

/* ═══ STANDARDS BAND ═══ */
.standards {
  padding: 80px 0;
  background: var(--bg-dark);
  color: var(--bg-alt);
  overflow: hidden;
}
.standards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.std-cell {
  background: var(--bg-dark);
  padding: 36px 28px;
  text-align: center;
}
.std-num {
  font-family: var(--font-display);
  font-size: clamp(32px, 3.5vw, 44px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.std-label { font-size: 13px; color: rgba(255,255,255,0.55); }

/* ═══ FAQ ═══ */
.faq-list { border-top: 1px solid var(--line); margin-top: 40px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 24px 0;
  font-size: 17px;
  font-weight: 500;
  font-family: var(--font-body);
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.faq-chev { flex-shrink: 0; transition: transform 0.25s; font-size: 22px; color: var(--ink-mute); line-height: 1; }
.faq-q.open .faq-chev { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-a-inner { padding: 0 0 24px; font-size: 15px; color: var(--ink-mute); line-height: 1.7; max-width: 800px; }

/* ═══ CTA FINAL ═══ */
.cta-final {
  background: var(--bg-dark);
  color: var(--bg-alt);
  padding: 140px 0;
  text-align: center;
}
.cta-final h2 { margin-bottom: 24px; }
.cta-final p { color: rgba(255,255,255,0.65); font-size: 18px; max-width: 540px; margin: 0 auto 40px; }

/* ═══ FOOTER ═══ */
footer { background: var(--bg-dark); color: var(--bg-alt); padding: 80px 0 40px; border-top: 1px solid var(--line-dark); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line-dark);
  margin-bottom: 32px;
}
.footer-brand-block { max-width: 320px; }
.footer-logo { display: flex; align-items: center; gap: 12px; color: var(--bg-alt); margin-bottom: 16px; }
.footer-logo-icon { width: 32px; height: 38px; }
.footer-brand-text { font-family: var(--font-display); font-size: 22px; font-weight: 700; letter-spacing: 0.12em; }
.footer-desc { font-size: 14px; color: rgba(255,255,255,0.5); line-height: 1.7; margin-bottom: 20px; }
.footer-contact a { display: block; font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 6px; transition: color 0.15s; }
.footer-contact a:hover { color: var(--bg-alt); }
.footer-col h4 { font-size: 11px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: rgba(255,255,255,0.4); margin-bottom: 18px; font-family: var(--font-body); }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 14px; color: rgba(255,255,255,0.65); transition: color 0.15s; }
.footer-col a:hover { color: var(--bg-alt); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer-bottom span, .footer-bottom a { font-size: 13px; color: rgba(255,255,255,0.4); }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom a:hover { color: var(--bg-alt); }

/* ═══ FORMS (contact) ═══ */
.form-field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }
.form-field label { font-size: 12px; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; color: var(--ink-mute); }
.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 15px;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg-alt);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(0,0,0,0.05);
}
.form-textarea { resize: vertical; min-height: 130px; }

/* ═══ BREADCRUMB ═══ */
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  margin-bottom: 28px;
}
.breadcrumb a { color: rgba(255,255,255,0.45); transition: color 0.15s; }
.breadcrumb a:hover { color: var(--bg-alt); }
.breadcrumb span { color: rgba(255,255,255,0.7); }

/* ═══ ABOUT HERO ═══ */
.page-hero {
  padding-top: calc(var(--nav-h) + 80px);
  padding-bottom: 100px;
  background: var(--bg-dark);
  color: var(--bg-alt);
}
.page-hero h1 { color: var(--bg-alt); max-width: 900px; margin-bottom: 24px; }
.page-hero .lead { color: rgba(255,255,255,0.65); max-width: 640px; }
.page-hero .eyebrow { color: rgba(255,255,255,0.5); }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 1024px) {
  .precision-grid { grid-template-columns: 1fr 1fr; }
  .p-card-big { grid-column: 1 / 3; grid-row: 1; }
  .standards-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-mobile-toggle { display: flex; }
  .hero-inner { padding: 80px 24px 60px; }
  .section, .service-block { padding: 80px 0; }
  .container { padding: 0 20px; }
  .service-row { grid-template-columns: 1fr; gap: 32px; }
  .service-row.reverse { direction: ltr; }
  .precision-grid { grid-template-columns: 1fr; }
  .p-card-big { grid-column: 1; }
  .standards-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .footer-brand-block { grid-column: 1 / 3; }
  .nav-dropdown-panel { display: none !important; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand-block { grid-column: 1; }
}

/* ═══ ANIMATIONS ═══ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal { opacity: 0; }
.reveal.in { animation: fadeUp 0.7s var(--ease) forwards; }