/* ==========================================================================
   ARTA Tarabar Nikan — Design System & Site Styles
   Brand geometry (bridge / road / forward arrow) expressed as:
     - the "route line" divider (a segmented lane-marking rule)
     - a converging diagonal line-field in the Hero (highway perspective)
     - small forward chevrons used as list/CTA accents
   ========================================================================== */

/* -------------------- Fonts -------------------- */
@font-face {
  font-family: 'IRANYekanX';
  src: url('/assets/fonts/iranyekan/IRANYekanXFaNum-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IRANYekanX';
  src: url('/assets/fonts/iranyekan/IRANYekanXFaNum-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* -------------------- Tokens -------------------- */
:root {
  /* Brand palette (do not extend with unrelated hues) */
  --arta-navy: #0A2F8F;
  --arta-blue: #1055D6;
  --arta-dark: #061B45;
  --arta-light: #F1F3F6;
  --arta-white: #FFFFFF;

  /* Derived tints/shades */
  --arta-navy-08: rgba(10, 47, 143, 0.08);
  --arta-navy-14: rgba(10, 47, 143, 0.14);
  --arta-blue-10: rgba(16, 85, 214, 0.10);
  --arta-dark-2: #0B2A63;
  --arta-dark-3: #0F3576;
  --arta-line: #E2E6ED;
  --arta-line-dark: rgba(255, 255, 255, 0.12);
  --arta-gray-700: #33394A;
  --arta-gray-600: #4B5566;
  --arta-gray-500: #6B7688;
  --arta-gray-300: #C7CDD8;
  --arta-success: #1E8E5A;

  /* Type */
  --font-fa: 'IRANYekanX', 'Vazirmatn', Tahoma, 'Segoe UI', sans-serif;

  /* Layout */
  --container: 1320px;
  --header-h: 84px;
  --header-h-mobile: 68px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(6, 27, 69, 0.06), 0 1px 1px rgba(6, 27, 69, 0.04);
  --shadow-md: 0 8px 24px rgba(6, 27, 69, 0.10);
  --shadow-lg: 0 16px 48px rgba(6, 27, 69, 0.16);
  --ease: cubic-bezier(.4,0,.2,1);
}

/* -------------------- Reset -------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-fa);
  color: var(--arta-dark);
  background: var(--arta-white);
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
input, textarea, select { font-family: inherit; }

:focus-visible {
  outline: 3px solid var(--arta-blue);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* -------------------- Layout helpers -------------------- */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}
.section { padding-block: 96px; position: relative; }
.section--tight { padding-block: 72px; }
@media (max-width: 768px) {
  .section { padding-block: 56px; }
  .section--tight { padding-block: 44px; }
}
.section--light { background: var(--arta-light); }
.section--dark {
  background: linear-gradient(180deg, var(--arta-dark) 0%, var(--arta-dark-2) 100%);
  color: var(--arta-white);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--arta-blue);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 2px;
  background: var(--arta-blue);
  display: inline-block;
}
.section--dark .eyebrow { color: #7FA6FF; }
.section--dark .eyebrow::before { background: #7FA6FF; }

.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}
.section-head.centered { margin-inline: auto; text-align: center; }

h2.section-title {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
}
.section-desc {
  margin-top: 14px;
  color: var(--arta-gray-600);
  font-size: 16px;
  line-height: 1.9;
}
.section--dark .section-desc { color: #B9C4DC; }

/* Route-line divider — the signature brand motif:
   a segmented "lane marking" rule referencing the road identity */
.route-line {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 4px;
  margin: 18px 0 0;
}
.route-line span {
  width: 22px;
  height: 4px;
  border-radius: 2px;
  background: var(--arta-blue);
}
.route-line span:nth-child(2) { background: var(--arta-navy); opacity: .55; }
.route-line span:nth-child(3) { background: var(--arta-navy); opacity: .3; }
.section--dark .route-line span { background: #7FA6FF; }

/* -------------------- Buttons -------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 52px;
  padding-inline: 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease), transform .12s var(--ease);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--arta-blue);
  color: var(--arta-white);
}
.btn-primary:hover { background: #0C46B8; }
.btn-outline {
  background: transparent;
  color: var(--arta-navy);
  border-color: var(--arta-navy);
}
.btn-outline:hover { background: var(--arta-navy); color: var(--arta-white); }
.section--dark .btn-outline { color: var(--arta-white); border-color: var(--arta-line-dark); }
.section--dark .btn-outline:hover { background: rgba(255,255,255,0.1); }
.btn-white {
  background: var(--arta-white);
  color: var(--arta-navy);
}
.btn-white:hover { background: #E7ECFB; }
.btn-icon { width: 18px; height: 18px; flex-shrink: 0; }
.btn-sm { height: 44px; padding-inline: 20px; font-size: 14px; }

/* -------------------- Header -------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--arta-line);
  transition: box-shadow .2s var(--ease);
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }
@media (max-width: 768px) { .site-header { height: var(--header-h-mobile); } }

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; }
.brand img { height: 38px; width: auto; }
@media (max-width: 768px) { .brand img { height: 30px; } }

.main-nav { display: flex; }
.main-nav ul { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  display: inline-block;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--arta-gray-700);
  border-radius: var(--radius-sm);
  transition: color .15s var(--ease), background .15s var(--ease);
  position: relative;
}
.main-nav a:hover { color: var(--arta-navy); background: var(--arta-navy-08); }
.main-nav a.is-active { color: var(--arta-blue); font-weight: 600; }

.header-actions { display: flex; align-items: center; gap: 12px; }
.header-cta { display: inline-flex; }
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .header-cta.desktop-only { display: none; }
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--arta-line);
  border-radius: var(--radius-sm);
}
.menu-toggle svg { width: 22px; height: 22px; }
@media (max-width: 1024px) { .menu-toggle { display: inline-flex; } }

.mobile-nav {
  position: fixed;
  inset: 0;
  top: var(--header-h-mobile);
  background: var(--arta-white);
  z-index: 99;
  transform: translateX(-100%); /* site is always RTL: panel slides in from the visual left */
  transition: transform .28s var(--ease);
  overflow-y: auto;
  padding: 24px;
}
.mobile-nav.is-open { transform: translateX(0); }
.mobile-nav ul { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav a {
  display: block;
  padding: 16px 6px;
  font-size: 18px;
  font-weight: 600;
  border-bottom: 1px solid var(--arta-line);
  color: var(--arta-dark);
}
.mobile-nav .header-cta { width: 100%; margin-top: 24px; }
.mobile-nav .btn { width: 100%; }
body.menu-open { overflow: hidden; }

/* -------------------- Hero -------------------- */
.hero {
  position: relative;
  background: radial-gradient(1200px 600px at 20% -10%, var(--arta-dark-3) 0%, var(--arta-dark) 55%, #04102E 100%);
  color: var(--arta-white);
  overflow: hidden;
  padding-block: 120px 96px;
}
@media (max-width: 768px) { .hero { padding-block: 56px 64px; } }

.hero-lines {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.5;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; }
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: #9FBBFF;
  background: rgba(127, 166, 255, 0.12);
  border: 1px solid rgba(127, 166, 255, 0.25);
  padding: 8px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.hero-eyebrow svg { width: 16px; height: 16px; }

.hero h1 {
  font-size: clamp(30px, 4.6vw, 50px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.hero p.lead {
  margin-top: 20px;
  font-size: 18px;
  line-height: 1.9;
  color: #C4D0E8;
  max-width: 560px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}
.hero-meta {
  margin-top: 48px;
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.hero-meta-item { display: flex; align-items: center; gap: 10px; }
.hero-meta-item svg { width: 20px; height: 20px; color: #7FA6FF; flex-shrink: 0; }
.hero-meta-item span { font-size: 14px; color: #B9C4DC; }

/* Hero visual: abstract bridge/road panel (no photography dependency) */
.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.12);
  background: linear-gradient(160deg, #0C2F72 0%, #071B45 100%);
  aspect-ratio: 4/3;
}
 .hero-visual img { width: 100%; height: 100%; display: block; object-fit: cover; }
@media (max-width: 1024px) { .hero-visual { aspect-ratio: 16/9; } }

/* -------------------- Quick Services -------------------- */
.quick-services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media (max-width: 1024px) { .quick-services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .quick-services-grid { grid-template-columns: 1fr; } }

.qs-card {
  background: var(--arta-white);
  border: 1px solid var(--arta-line);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease), transform .18s var(--ease);
}
.qs-card:hover { border-color: var(--arta-navy-14); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.qs-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--arta-navy-08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.qs-icon svg { width: 26px; height: 26px; color: var(--arta-navy); }
.qs-card h3 { font-size: 18px; font-weight: 600; }
.qs-card p { margin-top: 10px; font-size: 14.5px; color: var(--arta-gray-600); line-height: 1.85; }

/* -------------------- About -------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
@media (max-width: 900px) { .about-grid { grid-template-columns: 1fr; gap: 40px; } }
.about-copy p.body { margin-top: 18px; font-size: 16px; line-height: 2; color: var(--arta-gray-600); }
.about-points { margin-top: 28px; display: grid; gap: 14px; }
.about-point { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; color: var(--arta-gray-700); }
.about-point svg { width: 20px; height: 20px; color: var(--arta-blue); flex-shrink: 0; margin-top: 2px; }

.about-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3/2;
  background: linear-gradient(160deg, var(--arta-navy) 0%, var(--arta-dark) 100%);
}
 .about-visual img { width: 100%; height: 100%; display: block; object-fit: cover; }

/* -------------------- Statistics -------------------- */
.stats-band {
  background: var(--arta-white);
  border: 1px solid var(--arta-line);
  border-radius: var(--radius-lg);
  padding: 44px 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  box-shadow: var(--shadow-sm);
}
@media (max-width: 768px) { .stats-band { grid-template-columns: repeat(2, 1fr); gap: 32px 0; } }
.stat-item {
  text-align: center;
  border-inline-start: 1px solid var(--arta-line);
  padding-inline: 12px;
}
.stat-item:first-child { border-inline-start: none; }
@media (max-width: 768px) {
  .stat-item:nth-child(odd) { border-inline-start: none; }
}
.stat-value {
  font-size: clamp(28px, 3.4vw, 38px);
  font-weight: 700;
  color: var(--arta-navy);
  letter-spacing: -0.01em;
}
.stat-label { margin-top: 8px; font-size: 14px; color: var(--arta-gray-600); }

/* -------------------- Detailed Services -------------------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 1024px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .services-grid { grid-template-columns: 1fr; } }

.service-card {
  background: var(--arta-light);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  border: 1px solid transparent;
  transition: background .18s var(--ease), border-color .18s var(--ease);
}
.service-card:hover { background: var(--arta-white); border-color: var(--arta-line); box-shadow: var(--shadow-sm); }
.service-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--arta-blue);
  letter-spacing: 0.04em;
}
.service-card h3 { margin-top: 12px; font-size: 17px; font-weight: 600; }
.service-card p { margin-top: 10px; font-size: 14.5px; color: var(--arta-gray-600); line-height: 1.85; }

/* -------------------- Why ARTA -------------------- */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 900px) { .why-grid { grid-template-columns: 1fr; gap: 36px; } }
.why-list { margin-top: 8px; display: grid; gap: 18px; }
.why-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--arta-line-dark);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.03);
}
.why-item .icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(127,166,255,0.14);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.why-item .icon svg { width: 18px; height: 18px; color: #9FBBFF; }
.why-item span.text { font-size: 15.5px; color: #DCE4F4; padding-top: 6px; }

.why-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: linear-gradient(160deg, #0F3576 0%, #04102E 100%);
  border: 1px solid var(--arta-line-dark);
}
 .why-visual img { width: 100%; height: 100%; display: block; object-fit: cover; }

/* -------------------- Licenses -------------------- */
.licenses-grid {
  display: grid;
  grid-template-columns: repeat(var(--license-cols, 4), 1fr);
  gap: 24px;
}
.licenses-grid[data-count="1"],
.licenses-grid[data-count="2"] {
  justify-content: center;
  max-width: 720px;
  margin-inline: auto;
}
@media (max-width: 1024px) { .licenses-grid { grid-template-columns: repeat(2, 1fr) !important; } }
@media (max-width: 560px) { .licenses-grid { grid-template-columns: 1fr !important; } }

.license-card {
  background: var(--arta-white);
  border: 1px solid var(--arta-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  text-align: center;
  transition: box-shadow .18s var(--ease), transform .18s var(--ease);
}
.license-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.license-thumb {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--arta-light);
  border: 0;
  padding: 0;
  display: block;
  cursor: zoom-in;
  position: relative;
}
.license-thumb img { width: 100%; height: 100%; object-fit: cover; }
.license-thumb.img-fallback img { display: none; }
.license-thumb.img-fallback::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(var(--arta-light), var(--arta-light)),
    repeating-linear-gradient(135deg, var(--arta-line) 0 2px, transparent 2px 14px);
}
.license-thumb.img-fallback::after {
  content: 'مجوز';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--arta-gray-500);
  font-size: 13px;
  font-weight: 600;
}
.license-card .meta { padding: 16px 14px 20px; }
.license-card h3 { font-size: 15px; font-weight: 600; }
.license-card p { margin-top: 6px; font-size: 13px; color: var(--arta-gray-500); }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(4, 16, 46, 0.86);
  padding: 24px;
}
.lightbox.is-open { display: flex; }
.lightbox-inner { position: relative; max-width: 720px; width: 100%; }
.lightbox-inner img { width: 100%; border-radius: var(--radius-md); background: var(--arta-white); }
.lightbox-caption { color: #DCE4F4; text-align: center; margin-top: 14px; font-size: 14px; }
.lightbox-close {
  position: absolute;
  top: -46px;
  inset-inline-end: 0;
  width: 40px; height: 40px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--arta-white);
}
.lightbox-close svg { width: 18px; height: 18px; }

/* -------------------- Main CTA -------------------- */
.cta-band {
  background: linear-gradient(120deg, var(--arta-navy) 0%, var(--arta-blue) 100%);
  border-radius: var(--radius-lg);
  padding: 56px;
  color: var(--arta-white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}
.cta-band::after {
  content: '';
  position: absolute;
  inset-inline-end: -60px;
  top: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
}
@media (max-width: 768px) { .cta-band { padding: 36px 24px; } }
.cta-band h2 { font-size: clamp(22px, 3vw, 30px); font-weight: 700; max-width: 480px; }
.cta-band p { margin-top: 10px; color: rgba(255,255,255,0.85); max-width: 460px; font-size: 15.5px; }
.cta-actions { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; position: relative; z-index: 1; }
.cta-phone { display: flex; align-items: center; gap: 10px; font-size: 16px; font-weight: 600; }
.cta-phone svg { width: 18px; height: 18px; }

/* -------------------- Contact -------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 48px;
  align-items: stretch;
}
@media (max-width: 960px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-card {
  background: var(--arta-white);
  border: 1px solid var(--arta-line);
  border-radius: var(--radius-lg);
  padding: 32px;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.contact-row {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-block: 16px;
  border-bottom: 1px solid var(--arta-line);
}
.contact-row:last-child { border-bottom: 0; padding-bottom: 0; }
.contact-row:first-child { padding-top: 0; }
.contact-row .icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: var(--arta-navy-08);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contact-row .icon svg { width: 20px; height: 20px; color: var(--arta-navy); }
.contact-row .label { font-size: 13px; color: var(--arta-gray-500); }
.contact-row .value { margin-top: 3px; font-size: 15.5px; font-weight: 600; color: var(--arta-dark); }
.contact-row a.value:hover { color: var(--arta-blue); }

.map-card {
  background: var(--arta-white);
  border: 1px solid var(--arta-line);
  border-radius: var(--radius-lg);
  padding: 24px;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.map-card-head { padding: 8px 8px 16px; }
.map-card-head .eyebrow { margin-bottom: 10px; }
.map-card-head h3 { font-size: 22px; line-height: 1.5; font-weight: 700; }
.map-card-head p { margin-top: 8px; color: var(--arta-gray-600); font-size: 14.5px; line-height: 1.9; }
.map-frame-wrap { flex: 1; min-height: 420px; border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--arta-line); background: #e8edf6; }
.map-frame-wrap iframe { width: 100%; height: 100%; border: 0; display: block; }
.map-card-footer { padding: 16px 8px 4px; }
.map-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; color: var(--arta-blue); }
.map-link:hover { color: var(--arta-navy); }
@media (max-width: 960px) { .map-frame-wrap { min-height: 360px; } }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 14px; font-weight: 600; color: var(--arta-gray-700); }
.field label .req { color: var(--arta-blue); margin-inline-start: 2px; }
.field input, .field select, .field textarea {
  height: 50px;
  border: 1px solid var(--arta-line);
  border-radius: var(--radius-sm);
  padding-inline: 14px;
  font-size: 15px;
  background: var(--arta-white);
  color: var(--arta-dark);
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
}
.field textarea { height: auto; min-height: 120px; padding-block: 12px; resize: vertical; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--arta-gray-300); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--arta-blue);
  box-shadow: 0 0 0 3px var(--arta-blue-10);
}
.field.has-error input, .field.has-error select, .field.has-error textarea {
  border-color: #C0362C;
}
.field-error {
  font-size: 12.5px;
  color: #C0362C;
  display: none;
}
.field.has-error .field-error { display: block; }
.form-submit { margin-top: 24px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.form-note { font-size: 13px; color: var(--arta-gray-500); }

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}
.form-success.is-visible { display: block; }
.form-success .icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: rgba(30,142,90,0.12);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
}
.form-success .icon svg { width: 30px; height: 30px; color: var(--arta-success); }
.form-success h3 { font-size: 19px; font-weight: 700; }
.form-success p { margin-top: 8px; color: var(--arta-gray-600); font-size: 14.5px; }
.request-form.is-submitted .form-fields-wrap { display: none; }

/* -------------------- Footer -------------------- */
.site-footer {
  background: var(--arta-dark);
  color: #B9C4DC;
  padding-block: 64px 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; gap: 32px; } }

.footer-brand img { height: 32px; filter: brightness(0) invert(1); }
.footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.9; max-width: 320px; color: #9AA8C4; }
.footer-social { display: flex; gap: 10px; margin-top: 20px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--arta-line-dark);
  display: flex; align-items: center; justify-content: center;
  transition: background .15s var(--ease);
}
.footer-social a:hover { background: rgba(255,255,255,0.08); }
.footer-social svg { width: 16px; height: 16px; }

.footer-col h4 { font-size: 14px; font-weight: 700; color: var(--arta-white); margin-bottom: 18px; }
.footer-col ul { display: grid; gap: 12px; }
.footer-col a { font-size: 14px; color: #9AA8C4; transition: color .15s var(--ease); }
.footer-col a:hover { color: var(--arta-white); }
.footer-col .contact-line { font-size: 14px; color: #9AA8C4; display: flex; gap: 8px; }

.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--arta-line-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #7C8AAA;
}

/* -------------------- Reveal animation (minimal, purposeful) -------------------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* -------------------- Skip link -------------------- */
.skip-link {
  position: absolute;
  right: -9999px;
  top: 0;
  background: var(--arta-blue);
  color: #fff;
  padding: 12px 18px;
  z-index: 1000;
  border-radius: 0 0 0 8px;
}
.skip-link:focus {
  right: 0;
}