/* ============================================================
   ELCOST — Industrial Equipment Website
   ============================================================ */

:root {
  --primary:       #1a3a5c;
  --primary-dark:  #0d2240;
  --accent:        #f5a623;
  --accent-light:  #ffd166;
  --light:         #f0f7ff;
  --border:        #d6e6f5;
  --text:          #1e2d3d;
  --text-muted:    #5a7a96;
  --white:         #ffffff;
  --radius:        12px;
  --radius-lg:     20px;
  --shadow-sm:     0 2px 12px rgba(26, 58, 92, 0.08);
  --shadow:        0 6px 28px rgba(26, 58, 92, 0.13);
  --shadow-lg:     0 16px 48px rgba(26, 58, 92, 0.18);
  --transition:    0.25s ease;
  --navbar-h:      72px;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html  { scroll-behavior: smooth; font-size: 16px; overflow-x: hidden; }
body  { font-family: 'Segoe UI', Arial, sans-serif; color: var(--text); line-height: 1.65; background: var(--white); overflow-x: hidden; }
img, iframe, video { display: block; max-width: 100%; height: auto; }
a     { color: inherit; text-decoration: none; }
ul    { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

.container {
  width: min(1160px, 100% - 2 * 24px);
  margin-inline: auto;
}

/* ── Reusable ── */
.section-tag {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-head {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 52px;
}
.section-head h2 { margin-bottom: 14px; }
.section-head p  { color: var(--text-muted); font-size: 1.05rem; }

h2 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.25;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 8px;
  font-weight: 700;
  font-size: .95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-light);
  border-color: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 166, 35, 0.35);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.55);
}
.btn-outline:hover {
  background: rgba(255,255,255,.12);
  border-color: var(--white);
}

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--navbar-h);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: var(--primary-dark);
  box-shadow: 0 2px 20px rgba(0,0,0,.25);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: min(1160px, 100% - 48px);
  margin-inline: auto;
}
.nav-logo img { transition: opacity var(--transition); }
.nav-logo:hover img { opacity: .85; }

.nav-logo-text {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 0.02em;
  line-height: 1;
  transition: opacity var(--transition);
  display: flex;
  align-items: center;
}
.nav-logo-text:hover { opacity: .85; }

.footer-brand-text {
  color: rgba(255,255,255,.9);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
  display: block;
}

.nav-menu {
  display: flex;
  gap: 36px;
}
.nav-menu a {
  color: rgba(255,255,255,.85);
  font-weight: 600;
  font-size: .92rem;
  letter-spacing: .03em;
  position: relative;
  transition: color var(--transition);
}
.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-menu a:hover { color: var(--white); }
.nav-menu a:hover::after { width: 100%; }

.nav-right { display: flex; align-items: center; gap: 16px; }

.lang-toggle {
  background: rgba(255,255,255,.12);
  border: 1.5px solid rgba(255,255,255,.3);
  color: var(--white);
  padding: 5px 14px;
  border-radius: 6px;
  font-weight: 700;
  font-size: .82rem;
  letter-spacing: .06em;
  cursor: pointer;
  transition: all var(--transition);
}
.lang-toggle:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--primary-dark);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../img/elcost.jpg') center 40% / cover no-repeat;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 80% at 50% 35%, rgba(10,34,64,.62) 0%, transparent 100%),
    linear-gradient(160deg, rgba(13,34,64,.82) 0%, rgba(26,58,92,.72) 50%, rgba(13,34,64,.88) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  padding: 120px 24px 80px;
  margin-inline: auto;
  text-align: center;
}
.hero-tag {
  display: inline-block;
  background: rgba(245,166,35,.18);
  border: 1px solid rgba(245,166,35,.4);
  color: var(--accent-light);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 24px;
}
.hero-content h1 {
  font-size: clamp(2.2rem, 5.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 20px;
}
.hero-content h1 em {
  font-style: normal;
  color: var(--accent-light);
}
.hero-sub {
  color: rgba(255,255,255,.78);
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  margin-bottom: 36px;
  max-width: 580px;
  margin-inline: auto;
}
.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}
.hero-scroll-hint span {
  display: block;
  width: 24px; height: 40px;
  border: 2px solid rgba(255,255,255,.35);
  border-radius: 12px;
  position: relative;
}
.hero-scroll-hint span::after {
  content: '';
  position: absolute;
  top: 6px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  background: rgba(255,255,255,.6);
  border-radius: 2px;
  animation: scrollDot 1.8s ease infinite;
}
@keyframes scrollDot {
  0%   { top: 6px;  opacity: 1; }
  100% { top: 22px; opacity: 0; }
}

/* ── Stats Bar ── */
.stats-bar {
  background: var(--primary);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
}
.stat {
  flex: 1 1 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 28px 20px;
  border-right: 1px solid rgba(255,255,255,.1);
  text-align: center;
}
.stat:last-child { border-right: none; }
.stat strong {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}
.stat span {
  font-size: .8rem;
  color: rgba(255,255,255,.65);
  letter-spacing: .04em;
  font-weight: 500;
}

/* ── About ── */
.about {
  padding: 100px 0;
  background: var(--white);
}

/* ── PAGE HEADER (subpages) ── */
.page-header {
  background: var(--primary);
  padding: calc(var(--navbar-h) + 52px) 0 48px;
  text-align: center;
}
.page-header h1 {
  color: var(--white);
  font-size: 2.5rem;
  margin: 0;
}
.breadcrumb {
  color: rgba(255,255,255,.55);
  font-size: .875rem;
  margin: 0 0 12px;
}
.breadcrumb a {
  color: rgba(255,255,255,.7);
  text-decoration: none;
}
.breadcrumb a:hover { color: var(--white); }

/* ── Active nav link ── */
.nav-menu a.active {
  color: var(--accent);
}

/* ── SOFTWARE PAGE ── */
.software-section {
  padding: 80px 0 100px;
  background: var(--white);
}
.sw-card {
  max-width: 760px;
  margin: 0 auto;
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) * 1.5);
  padding: 22px 30px;
  box-shadow: var(--shadow);
}
.sw-card + .sw-card { margin-top: 28px; }
.sw-title-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.sw-title-row h2 {
  margin: 0;
  font-size: 1.4rem;
  color: var(--primary);
}
.sw-version {
  background: var(--accent);
  color: var(--white);
  font-size: .75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: .5px;
}
.sw-subtitle {
  color: var(--text-muted);
  font-size: .8rem;
  margin: 2px 0 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.sw-body p {
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}
.sw-body h3 {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 16px;
}
.sw-features {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 20px;
}
.sw-features li {
  padding-left: 18px;
  position: relative;
  color: var(--text-muted);
  line-height: 1.4;
  font-size: .9rem;
}
.sw-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}
.sw-download {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
}
.btn-download svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.sw-note {
  color: var(--text-muted);
  font-size: .85rem;
  margin: 0;
}
@media (max-width: 700px) {
  .sw-card { padding: 28px 20px; }
  .sw-features { grid-template-columns: 1fr; }
}

/* ── MAP ── */
.map-wrap {
  margin-top: 56px;
}
.map-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}
.map-wrap iframe {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: block;
}

/* ── PREZENTARE GENERALA ── */
.overview {
  padding: 100px 0;
  background: var(--light);
}
.overview-content {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.overview-content p {
  color: var(--text-muted);
  line-height: 1.8;
  font-size: 1rem;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.about-text .section-tag { margin-bottom: 14px; }
.about-text h2 { margin-bottom: 22px; }
.about-text p  { color: var(--text-muted); margin-bottom: 16px; font-size: 1.02rem; }

.check-list { margin-top: 24px; display: flex; flex-direction: column; gap: 10px; }
.check-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: var(--text);
  font-size: .95rem;
}
.check-list li::before {
  content: '';
  flex-shrink: 0;
  width: 20px; height: 20px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Ccircle cx='10' cy='10' r='10' fill='%23f5a623'/%3E%3Cpolyline points='5,10 8.5,13.5 15,7' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E") center/contain no-repeat;
}

.about-visual { position: relative; }
/* Partners / collaborators row */
.partners-row { margin-top: 28px; }
.partners-title {
  font-size: .78rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: .07em;
  margin-bottom: 12px;
}
.partners-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.partner-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 14px 5px 6px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--white);
  letter-spacing: .02em;
  transition: border-color var(--transition), color var(--transition);
}
.partner-chip:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.partner-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  color: #fff;
  font-size: .72rem;
  font-weight: 800;
  flex-shrink: 0;
  letter-spacing: 0;
}
.partner-logo--sm {
  font-size: .58rem;
  letter-spacing: -.5px;
}
.about-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-img-wrap img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  filter: brightness(.9) saturate(1.1);
}
.about-img-wrap img.sketch {
  object-fit: contain;
  background: #f4f1e7;
  filter: none;
}
.about-img-wrap img.building-photo {
  filter: none;
}
.about-badge {
  position: absolute;
  bottom: 20px; left: 20px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow);
}
.about-badge svg { width: 22px; height: 22px; color: var(--accent); flex-shrink: 0; }
.about-badge strong { display: block; font-size: .92rem; color: var(--primary); font-weight: 700; }
.about-badge span   { font-size: .78rem; color: var(--text-muted); }

/* ── Products ── */
.products {
  padding: 100px 0;
  background: var(--light);
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1.5px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}
.product-card--wide {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: flex-start;
  gap: 28px;
}
.product-card--wide .product-card-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1;
}
.product-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--light), #d4eaff);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition);
}
.product-card:hover .product-icon {
  background: linear-gradient(135deg, rgba(245,166,35,.15), rgba(245,166,35,.08));
}
.product-icon svg {
  width: 28px; height: 28px;
  color: var(--primary);
  transition: color var(--transition);
}
.product-card:hover .product-icon svg { color: var(--accent); }

.product-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.35;
}
.product-card p {
  color: var(--text-muted);
  font-size: .9rem;
  flex: 1;
  line-height: 1.6;
}
.card-cta {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--accent);
  font-weight: 700;
  font-size: .88rem;
  margin-top: auto;
  transition: gap var(--transition), color var(--transition);
}
.card-cta span { transition: transform var(--transition); }
.card-cta:hover { color: var(--primary); }
.card-cta:hover span { transform: translateX(4px); }

/* ── Contact ── */
.contact {
  padding: 100px 0;
  background: var(--white);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 60px;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 28px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; }
.ci-icon {
  width: 44px; height: 44px;
  background: var(--light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--primary);
}
.ci-icon svg { width: 20px; height: 20px; }
.contact-item strong {
  display: block;
  font-size: .82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--primary);
  margin-bottom: 4px;
}
.contact-item p, .contact-item a {
  color: var(--text-muted);
  font-size: .94rem;
  line-height: 1.6;
  transition: color var(--transition);
}
.contact-item a:hover { color: var(--accent); }

/* Contact Form */
.contact-form {
  background: var(--light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group { display: flex; flex-direction: column; gap: 7px; }
.form-group label {
  font-size: .82rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .03em;
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: var(--white);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,58,92,.10);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select { cursor: pointer; }

.contact-form .btn { align-self: flex-start; }

.form-success {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #1b7f47;
  font-weight: 600;
  font-size: .94rem;
  padding: 12px 16px;
  background: #edfaf3;
  border: 1.5px solid #a3d9bc;
  border-radius: 8px;
}
.form-success svg { width: 20px; height: 20px; flex-shrink: 0; }

/* ── Map section (contact.html) ── */
.map-section {
  margin-top: 64px;
}
.map-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 18px 24px;
  flex-wrap: wrap;
}
.map-bar-info {
  display: flex;
  align-items: center;
  gap: 14px;
}
.map-bar-icon {
  width: 40px; height: 40px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--white);
}
.map-bar-icon svg { width: 18px; height: 18px; }
.map-bar-info strong {
  display: block;
  font-size: .88rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 2px;
}
.map-bar-info span {
  font-size: .82rem;
  color: var(--text-muted);
}
.btn-directions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--primary);
  color: var(--white);
  border-radius: 8px;
  font-size: .88rem;
  font-weight: 700;
  letter-spacing: .03em;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}
.btn-directions svg { width: 16px; height: 16px; flex-shrink: 0; }
.btn-directions:hover { background: var(--accent); color: var(--primary); transform: translateY(-1px); }
.map-frame {
  border: 1.5px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  overflow: hidden;
}
.map-frame iframe { display: block; }

/* ── Footer ── */
.footer {
  background: var(--primary-dark);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand img { margin-bottom: 16px; }
.footer-slogan {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 6px 0 14px;
}
.footer-brand p {
  color: rgba(255,255,255,.55);
  font-size: .88rem;
  line-height: 1.7;
  max-width: 280px;
}
.footer-col h4 {
  color: var(--white);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col li, .footer-col a {
  color: rgba(255,255,255,.55);
  font-size: .88rem;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  text-align: center;
  padding: 20px 0;
}
.footer-bottom p {
  color: rgba(255,255,255,.35);
  font-size: .8rem;
}

/* ── Resurse (resurse.html) ── */
.resurse {
  padding: 100px 0;
  background: var(--white);
}
.resurse-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 48px;
}
.filter-btn {
  padding: 8px 18px;
  border-radius: 20px;
  border: 1.5px solid var(--border);
  background: var(--white);
  color: var(--text-muted);
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}
.resurse-category { margin-bottom: 64px; }
.resurse-category-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
}
.resurse-category-title svg {
  width: 22px; height: 22px;
  color: var(--accent);
  flex-shrink: 0;
}
.resurse-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}
.res-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.res-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.res-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.res-badge {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 20px;
}
.res-badge-src  { background: var(--light);    color: var(--primary);  border: 1px solid var(--border); }
.res-badge-lang { background: #edfaf3;          color: #1b7f47;         border: 1px solid #a3d9bc; }
.res-badge-pdf  { background: #fff3e6;          color: #b34a00;         border: 1px solid #f5c49a; }
.res-card h3 {
  font-size: .97rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.4;
  margin: 0;
}
.res-card p {
  font-size: .88rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}
.res-card-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: .85rem;
  font-weight: 700;
  color: var(--primary);
  border: 1.5px solid var(--border);
  border-radius: 7px;
  padding: 8px 14px;
  align-self: flex-start;
  transition: all var(--transition);
}
.res-card-link svg { width: 15px; height: 15px; flex-shrink: 0; }
.res-card-link:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}
.res-disclaimer {
  margin-top: 48px;
  padding: 20px 24px;
  background: var(--light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: .84rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.res-disclaimer strong { color: var(--primary); }

/* ── GDPR Cookie Banner ── */
.gdpr-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 9999;
  background: var(--primary-dark);
  border-top: 3px solid var(--accent);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  box-shadow: 0 -4px 24px rgba(0,0,0,.25);
  animation: gdpr-slide-up .35s ease;
}
@keyframes gdpr-slide-up {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}
.gdpr-banner p {
  flex: 1;
  color: rgba(255,255,255,.82);
  font-size: .88rem;
  line-height: 1.6;
  margin: 0;
  min-width: 220px;
}
.gdpr-banner a {
  color: var(--accent);
  text-decoration: underline;
}
.gdpr-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
  flex-wrap: wrap;
}
.gdpr-btn-accept {
  padding: 9px 22px;
  background: var(--accent);
  color: var(--primary-dark);
  border: none;
  border-radius: 7px;
  font-weight: 700;
  font-size: .88rem;
  cursor: pointer;
  transition: background var(--transition);
}
.gdpr-btn-accept:hover { background: var(--accent-light); }
.gdpr-btn-decline {
  padding: 9px 18px;
  background: transparent;
  color: rgba(255,255,255,.6);
  border: 1.5px solid rgba(255,255,255,.25);
  border-radius: 7px;
  font-weight: 600;
  font-size: .88rem;
  cursor: pointer;
  transition: all var(--transition);
}
.gdpr-btn-decline:hover { border-color: rgba(255,255,255,.6); color: var(--white); }

/* ── 404 page ── */
.page-404 {
  min-height: calc(100vh - var(--navbar-h));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 24px;
  background: var(--white);
}
.page-404-inner { max-width: 520px; }
.page-404-code {
  font-size: clamp(6rem, 20vw, 10rem);
  font-weight: 800;
  color: var(--border);
  line-height: 1;
  letter-spacing: -.04em;
  margin-bottom: 8px;
}
.page-404-inner h1 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--primary);
  margin-bottom: 16px;
}
.page-404-inner p {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 36px;
  line-height: 1.7;
}
.page-404-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-visual { order: -1; }
  .about-img-wrap img { height: 320px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .product-card--wide { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  :root { --navbar-h: 64px; }

  .nav-menu {
    position: fixed;
    top: var(--navbar-h); left: 0; right: 0;
    background: var(--primary-dark);
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition), padding var(--transition);
  }
  .nav-menu.open {
    max-height: 400px;
    padding: 16px 0;
  }
  .nav-menu li { width: 100%; text-align: center; }
  .nav-menu a { display: block; padding: 14px 24px; }
  .hamburger { display: flex; }

  .hero-content h1 { font-size: 2rem; }
  .stats-bar { flex-wrap: wrap; }
  .stat { flex: 1 1 48%; border-right: none; border-bottom: 1px solid rgba(255,255,255,.1); }
  .stat:nth-child(odd) { border-right: 1px solid rgba(255,255,255,.1); }
  .products-grid { grid-template-columns: 1fr; }
  .product-card--wide { grid-column: 1; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .resurse-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .about, .products, .contact { padding: 68px 0; }

  .product-spec-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
    font-size: .88rem;
  }
  .product-spec-table th,
  .product-spec-table td {
    padding: 8px 12px;
    word-break: break-word;
  }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .contact-form { padding: 24px 20px; }
}

/* ── Clients & References ── */
.clients {
  padding: 100px 0;
  background: var(--white);
}

.clients-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-bottom: 72px;
}

.client-chip {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 22px 12px 10px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--light);
  transition: all var(--transition);
}
.client-chip:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.client-initials {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
  font-weight: 800;
  color: var(--white);
  flex-shrink: 0;
  letter-spacing: -.3px;
}
.client-chip-text strong {
  display: block;
  font-size: .88rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}
.client-chip-text span {
  font-size: .74rem;
  color: var(--text-muted);
}

.refs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 52px;
}

.ref-card {
  background: var(--light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all var(--transition);
}
.ref-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-5px);
}

.ref-tag {
  align-self: flex-start;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--primary);
  padding: 4px 12px;
  border-radius: 20px;
}
.ref-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.4;
  margin: 0;
}
.ref-card p {
  color: var(--text-muted);
  font-size: .9rem;
  line-height: 1.7;
  flex: 1;
  margin: 0;
}
.ref-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.ref-meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: .8rem;
  color: var(--text-muted);
  font-weight: 600;
}
.ref-meta-item svg {
  width: 14px;
  height: 14px;
  color: var(--accent);
  flex-shrink: 0;
}

.clients-cta {
  text-align: center;
  padding-top: 8px;
}
.clients-cta p {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 1rem;
}

@media (max-width: 900px) {
  .refs-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .refs-grid { grid-template-columns: 1fr; }
  .client-chip { padding: 10px 14px 10px 8px; }
}

/* ── Product Detail Pages ── */
.product-detail {
  padding: 80px 0 100px;
  background: var(--white);
}
.product-detail-inner {
  max-width: 900px;
  margin: 0 auto;
}
.product-detail-inner h2 {
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  color: var(--primary);
  margin-bottom: 24px;
}
.product-detail-inner p {
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 18px;
  font-size: 1rem;
}
.product-detail-inner ul {
  list-style: disc;
  padding-left: 24px;
  color: var(--text-muted);
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 1rem;
  line-height: 1.7;
}
.product-detail-inner h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin: 32px 0 12px;
}
.product-images {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 36px 0;
}
.product-images img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  object-fit: cover;
}
.product-downloads {
  margin: 36px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.btn-dl {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--light);
  border: 1.5px solid var(--border);
  color: var(--primary);
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: 700;
  font-size: .92rem;
  transition: all var(--transition);
}
.btn-dl:hover {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.btn-dl svg { width: 18px; height: 18px; flex-shrink: 0; }
.product-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 700;
  font-size: .9rem;
  margin-bottom: 32px;
  transition: gap var(--transition);
}
.product-back:hover { gap: 10px; }
.product-3d-wrap {
  margin: 36px 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--light);
  position: relative;
}
.product-3d-wrap iframe {
  display: block;
  width: 100%;
  height: 500px;
  border: none;
}
.product-3d-note {
  font-size: .82rem;
  color: var(--text-muted);
  margin-top: 8px;
  font-style: italic;
}
.product-spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: .95rem;
}
.product-spec-table th,
.product-spec-table td {
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.product-spec-table th {
  background: var(--light);
  color: var(--primary);
  font-weight: 700;
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.product-spec-table td { color: var(--text-muted); }
.product-spec-table tr:last-child td { border-bottom: none; }
.highlight-box {
  background: var(--light);
  border: 1.5px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 28px 0;
}
.highlight-box p { margin: 0; color: var(--text); }
/* ── Documentation page ── */
.doc-page { padding: 60px 0 80px; }
.doc-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}
.doc-content { min-width: 0; }
.doc-content pre { white-space: pre; overflow-x: auto; max-width: 100%; }
.doc-toc { position: sticky; top: calc(var(--navbar-h) + 20px); }
.doc-toc-inner {
  background: var(--light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  max-height: calc(100vh - var(--navbar-h) - 60px);
  overflow-y: auto;
}
.doc-toc-title {
  font-weight: 800;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--accent);
  margin-bottom: 14px;
}
.doc-toc ol { list-style: none; padding: 0; margin: 0; }
.doc-toc li { margin: 2px 0; }
.doc-toc a {
  font-size: .85rem;
  color: var(--text-muted);
  padding: 4px 6px;
  border-radius: 6px;
  display: block;
  transition: all var(--transition);
}
.doc-toc a:hover { background: var(--border); color: var(--primary); }
.doc-toc .toc-part {
  font-weight: 700;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--primary);
  margin: 14px 0 4px;
}
.doc-toc ul.toc-sub {
  list-style: none;
  padding: 4px 0 6px 14px;
  margin: 2px 0 8px;
  border-left: 2px solid var(--border);
}
.doc-toc ul.toc-sub li { margin: 1px 0; }
.doc-toc ul.toc-sub a {
  font-size: .78rem;
  padding: 3px 8px;
  color: var(--text-muted);
}
.doc-toc ul.toc-sub a:hover { background: var(--light); color: var(--primary); }

/* ── TOC collapsible Parts (top-level) ── */
.doc-toc .toc-part.toc-part-clickable {
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color var(--transition);
}
.doc-toc .toc-part.toc-part-clickable:hover {
  color: var(--accent);
}
.doc-toc .toc-part.toc-part-clickable:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
.doc-toc .toc-part-chevron {
  font-size: .75rem;
  color: var(--accent);
  flex: 0 0 auto;
  width: 12px;
  display: inline-flex;
  justify-content: center;
}
.doc-toc ol {
  max-height: 3000px;
  overflow: hidden;
  opacity: 1;
  transition: max-height .35s ease, opacity .25s ease, margin .35s ease;
}
.doc-toc ol.toc-part-collapsed {
  max-height: 0;
  opacity: 0;
  margin-top: 0;
  margin-bottom: 0;
}

/* ── TOC collapsible chapters (level 2) ── */
.doc-toc li.has-sub {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
}
.doc-toc li.has-sub > .toc-toggle {
  flex: 0 0 auto;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: .72rem;
  width: 18px;
  height: 22px;
  padding: 0;
  margin-top: 4px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
}
.doc-toc li.has-sub > .toc-toggle:hover {
  background: var(--border);
  color: var(--primary);
}
.doc-toc li.has-sub > .toc-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.doc-toc li.has-sub > a {
  flex: 1 1 0;
  min-width: 0;
}
.doc-toc li.has-sub > ul.toc-sub {
  flex: 1 0 100%;
  transition: max-height .3s ease, opacity .25s ease, padding .3s ease, margin .3s ease, border-color .3s ease;
  max-height: 600px;
  overflow: hidden;
  opacity: 1;
}
.doc-toc li.has-sub.collapsed > ul.toc-sub {
  max-height: 0;
  opacity: 0;
  padding-top: 0;
  padding-bottom: 0;
  margin-top: 0;
  margin-bottom: 0;
  border-left-color: transparent;
}
.doc-content h2 {
  font-size: 1.5rem;
  margin: 40px 0 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}
.doc-content h3 {
  font-size: 1.1rem;
  color: var(--primary);
  font-weight: 700;
  margin: 28px 0 10px;
}
.doc-content h4 {
  font-size: .95rem;
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin: 20px 0 8px;
}
.doc-content p { margin-bottom: 14px; color: var(--text); }
.doc-content ul { list-style: disc; padding-left: 22px; margin-bottom: 14px; }
.doc-content ul li { margin: 4px 0; color: var(--text-muted); }
.doc-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  background: var(--light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 22px;
  margin-bottom: 36px;
  font-size: .88rem;
  color: var(--text-muted);
}
.doc-meta strong { color: var(--primary); }
.doc-part-badge {
  display: inline-block;
  background: var(--primary);
  color: var(--white);
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 8px;
}
.doc-formula {
  background: #f8fafd;
  border: 1.5px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin: 20px 0;
  font-family: 'Courier New', monospace;
  font-size: .88rem;
  line-height: 1.9;
  color: var(--text);
  overflow-x: auto;
}
.doc-formula strong { color: var(--primary); display: block; margin-bottom: 6px; font-family: 'Segoe UI', sans-serif; font-size: .82rem; text-transform: uppercase; letter-spacing: .07em; }
.doc-comparison { overflow-x: auto; margin: 20px 0; }
.doc-comparison table { min-width: 500px; }
.doc-refs ol { list-style: none; padding: 0; }
.doc-refs ol li { padding: 10px 0; border-bottom: 1px solid var(--border); font-size: .9rem; color: var(--text-muted); }
.doc-refs ol li:last-child { border-bottom: none; }
.doc-refs strong { color: var(--primary); }
@media (max-width: 900px) {
  .doc-layout { grid-template-columns: 1fr; }
  .doc-toc { position: static; display: none; }
}
/* ── Source code block ── */
.source-code-wrap {
  margin: 20px 0;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.source-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--primary);
  color: #fff;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .05em;
}
.source-filename { font-family: 'Cascadia Code', 'Consolas', monospace; }
.source-lang {
  background: rgba(255,255,255,.18);
  padding: 2px 10px;
  border-radius: 20px;
  font-size: .72rem;
}
.source-code {
  margin: 0;
  padding: 0;
  background: #0d1117;
  overflow-x: auto;
  max-height: 700px;
  overflow-y: auto;
}
.source-code code {
  display: block;
  padding: 16px 20px;
  font-family: 'Cascadia Code', 'Consolas', 'Courier New', monospace;
  font-size: .78rem;
  line-height: 1.65;
  color: #e6edf3;
  white-space: pre;
}
.source-code .ln {
  display: inline-block;
  width: 3.2em;
  color: #484f58;
  user-select: none;
  text-align: right;
  margin-right: 18px;
  border-right: 1px solid #30363d;
  padding-right: 10px;
  font-size: .74rem;
}
/* ── Doc scope intro box ── */
.doc-scope {
  background: linear-gradient(135deg, #e8f4ff 0%, #f0f7ff 100%);
  border: 1.5px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 22px 26px;
  margin-bottom: 36px;
}
.doc-scope strong { display: block; color: var(--primary); font-size: .82rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 10px; }
.doc-scope p { margin: 0 0 10px; color: var(--text); font-size: .95rem; }
.doc-scope p:last-child { margin-bottom: 0; }
.doc-scope ul { list-style: disc; padding-left: 18px; margin: 8px 0 10px; }
.doc-scope ul li { margin: 5px 0; color: var(--text-muted); font-size: .92rem; }
.doc-scope .rtd-tag {
  display: inline-block;
  background: var(--primary);
  color: var(--white);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .06em;
  padding: 2px 10px;
  border-radius: 20px;
  margin-left: 6px;
  vertical-align: middle;
}

/* ── Calculator debit diafragmă ── */
.calc-widget {
  background: var(--light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 28px 20px;
  margin: 24px 0 32px;
}
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.calc-field { display: flex; flex-direction: column; gap: 5px; }
.calc-field label { font-size: .82rem; font-weight: 600; color: var(--primary); }
.calc-field input,
.calc-field select {
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: var(--white);
  color: var(--text);
  font-size: .92rem;
  transition: border-color var(--transition);
}
.calc-field input:focus,
.calc-field select:focus { outline: none; border-color: var(--primary); }
.calc-gas-params {
  background: rgba(245,166,35,.06);
  border: 1.5px solid rgba(245,166,35,.3);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 16px;
}
.calc-btn { margin-top: 4px; }
.calc-results {
  margin-top: 20px;
  border-top: 1.5px solid var(--border);
  padding-top: 20px;
}
.calc-results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}
.calc-result-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.calc-result-highlight {
  border-color: var(--primary);
  border-left: 3px solid var(--primary);
}
.calc-result-label { font-size: .75rem; color: var(--text-muted); font-weight: 600; letter-spacing: .04em; }
.calc-result-value { font-size: .97rem; font-weight: 700; color: var(--primary); font-family: 'Cascadia Code', 'Consolas', monospace; }
.calc-note { font-size: .75rem; color: var(--text-muted); text-align: right; margin: 0; }
.calc-note .calc-warn {
  display: inline-block; margin-top: 6px; padding: 6px 10px;
  background: #fff8e1; border-left: 3px solid #f39c12;
  color: #7a4f00; font-weight: 600; text-align: left;
  font-size: .78rem; line-height: 1.45;
}
.calc-error { color: #c0392b; font-size: .88rem; margin-top: 8px; font-weight: 600; }

/* Fluid properties helper (collapsible) */
.fluid-helper {
  margin: 0 0 22px;
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.fluid-helper > summary {
  cursor: pointer;
  padding: 12px 16px;
  font-weight: 600;
  color: var(--primary);
  user-select: none;
  list-style: none;
  border-radius: var(--radius);
}
.fluid-helper > summary::-webkit-details-marker { display: none; }
.fluid-helper > summary::marker { content: ''; }
.fluid-helper > summary::before {
  content: '▸ ';
  display: inline-block;
  margin-right: 6px;
  transition: transform .2s ease;
}
.fluid-helper[open] > summary::before { content: '▾ '; }
.fluid-helper > summary:hover { background: var(--border); }
.fluid-helper-body {
  padding: 16px;
  border-top: 1px solid var(--border);
}
.fluid-helper-results {
  margin-top: 16px;
  padding: 12px 14px;
  background: var(--white);
  border-radius: 6px;
  border-left: 3px solid var(--accent);
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.fluid-helper-results .calc-result-item { display: inline-flex; gap: 8px; align-items: baseline; }
.calc-field input.autocomputed {
  background-color: #fff8e1;
  border-color: var(--accent);
  cursor: not-allowed;
}
.calc-field input.autocomputed:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(245, 166, 35, 0.2);
}
.input-with-unit {
  display: flex;
  gap: 6px;
}
.input-with-unit > input { flex: 1 1 auto; min-width: 0; }
.input-with-unit > select { flex: 0 0 auto; max-width: 110px; font-size: .9rem; }
@media (max-width: 600px) {
  .fluid-helper-results { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 600px) {
  .calc-grid { grid-template-columns: 1fr; }
  .calc-results-grid { grid-template-columns: 1fr; }
}
.calc-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 36px;
}
.calc-tab-btn {
  padding: 11px 28px;
  font-size: .92rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.calc-tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.calc-tab-btn:hover { color: var(--primary); }
.calc-panel { display: none; }
.calc-panel.active { display: block; }
.calc-subtabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.calc-subtab-btn {
  padding: 7px 18px;
  font-size: .83rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition);
}
.calc-subtab-btn.active {
  color: var(--white);
  background: var(--primary);
  border-color: var(--primary);
}
.calc-subtab-btn:hover:not(.active) { border-color: var(--primary); color: var(--primary); }
.calc-subpanel { display: none; }
.calc-subpanel.active { display: block; }
.calc-dir-toggle {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  align-items: center;
}
.calc-dir-btn {
  padding: 6px 16px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition);
}
.calc-dir-btn.active { color: var(--white); background: var(--accent); border-color: var(--accent); }
.calc-dir-label { font-size: .8rem; color: var(--text-muted); font-weight: 600; margin-right: 4px; }

/* ── end Documentation ── */

@media (max-width: 640px) {
  .product-images { grid-template-columns: 1fr; }
  .product-3d-wrap iframe { height: 300px; }
  .product-3d-wrap canvas { height: 300px !important; }
}

/* ─── PDF export from calculator (visible only when printing) ─── */
.print-header { display: none; }
.print-content { display: none; }
.print-footer { display: none; }
.calc-pdf-actions { margin-top: 18px; text-align: right; }
.btn-pdf {
  font-size: .92rem;
  padding: 9px 20px;
  background: var(--white);
  color: var(--primary);
  border-color: var(--primary);
}
.btn-pdf:hover {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.btn-pdf::before {
  content: "📄";
  margin-right: 6px;
}

@media print {
  /* Hide normal page elements (explicit list — no wildcards) */
  .navbar,
  .page-header,
  .resurse,
  .footer,
  .gdpr-banner { display: none !important; }

  /* Show the three print-only blocks */
  .print-header,
  .print-content,
  .print-footer { display: block !important; visibility: visible !important; opacity: 1 !important; }

  .print-footer {
    margin-top: 18px;
    padding-top: 6px;
    border-top: 1px solid #aaa;
    font-size: 8pt;
    color: #888;
    text-align: center;
  }

  /* Make sure everything inside print-content is visible */
  .print-content * { visibility: visible !important; opacity: 1 !important; }

  /* Layout for cloned inputs/results inside print-content — compact for 1 page */
  .print-content { font-size: 9.5pt; line-height: 1.35; }
  .print-content .calc-widget { display: block !important; padding: 0 !important; margin: 0 !important; background: #fff !important; box-shadow: none !important; border: none !important; }

  /* Inputs in 2 columns to save vertical space */
  .print-content .calc-grid { display: grid !important; grid-template-columns: 1fr 1fr; gap: 4px 16px !important; margin: 0 0 8px 0 !important; }
  .print-content .calc-field { display: flex !important; align-items: baseline; gap: 6px; padding: 2px 0; border-bottom: 1px dotted #ccc; }
  .print-content .calc-field label { font-weight: 600; color: #333; flex: 1; font-size: 9pt; }
  .print-content .print-input-value { color: #1a3a5c; font-weight: 600; font-family: 'Cascadia Code', 'Consolas', monospace; font-size: 9pt; }

  /* Results compact */
  .print-content .calc-results { display: block !important; background: #fafafa !important; border: 1px solid #888; padding: 6px 10px !important; margin: 8px 0 !important; page-break-inside: avoid; }
  .print-content .calc-results-grid { display: block !important; }
  .print-content .calc-result-item { display: flex !important; justify-content: space-between; padding: 2px 0; border-bottom: 1px solid #ddd; font-size: 9.5pt; }
  .print-content .calc-result-item:last-child { border-bottom: none; }
  .print-content .calc-result-label { color: #444; }
  .print-content .calc-result-value { color: #1a3a5c; font-weight: 700; font-family: 'Cascadia Code', 'Consolas', monospace; }
  .print-content .calc-result-highlight .calc-result-value { color: #003B49; font-weight: 700; }
  .print-content .calc-note { font-size: 8pt !important; color: #666 !important; font-style: italic; margin: 4px 0 0 0 !important; }

  /* Headings compact */
  .print-content h2, .print-content h3 { color: #1a3a5c; page-break-after: avoid; margin: 0 0 4px 0 !important; }
  .print-content h2 { font-size: 11pt; }
  .print-content h3 { font-size: 10pt; }
  .print-content .section-head { margin: 0 0 6px 0 !important; }
  .print-content .section-tag { color: #888 !important; background: none !important; padding: 0 !important; font-size: 8pt !important; }
  .print-content .section-head p { margin: 2px 0 !important; font-size: 8.5pt; color: #666; }

  /* Hide redundant methodology disclaimer (same info is in calc-note above) */
  .print-content .res-disclaimer { display: none !important; }

  /* Hide gas-params toggle if liquid (already hidden by [hidden]); hide other unnecessary UI */
  .print-content .calc-dir-btns,
  .print-content .calc-mode-btns,
  .print-content .calc-fluid-toggle { display: none !important; }

  /* Show branded print header — compact */
  .print-header {
    display: block !important;
    margin: 0 0 8px 0;
    padding-bottom: 6px;
    border-bottom: 2px solid #1a3a5c;
  }
  .print-header-inner {
    display: flex;
    align-items: center;
    gap: 14px;
  }
  .print-logo { width: 44px; height: 44px; flex-shrink: 0; }
  .print-company { display: flex; flex-direction: column; line-height: 1.3; }
  .print-company strong { font-size: 12pt; color: #1a3a5c; letter-spacing: .02em; }
  .print-company span { font-size: 8.2pt; color: #444; }
  .print-meta {
    display: flex;
    justify-content: space-between;
    margin-top: 4px;
    font-size: 9pt;
    color: #1a3a5c;
    font-weight: 600;
  }

  /* General body adjustments */
  body { background: #fff !important; color: #000 !important; font-size: 10.5pt; line-height: 1.45; }
  .container { width: 100% !important; max-width: 100% !important; padding: 0 !important; margin: 0 !important; }
  .resurse, .calc-widget { padding: 0 !important; box-shadow: none !important; background: #fff !important; }

  /* Section heading */
  h2 { font-size: 13pt !important; color: #1a3a5c; margin: 6px 0 12px 0; page-break-after: avoid; }
  h3 { font-size: 11.5pt !important; color: #1a3a5c; margin: 8px 0 4px 0; page-break-after: avoid; }
  .section-tag { color: #888 !important; background: none !important; padding: 0 !important; font-size: 8.5pt !important; }

  /* Inputs (the user's entered values) */
  .calc-grid { display: block !important; }
  .calc-field { padding: 3px 0; display: flex; align-items: baseline; gap: 8px; }
  .calc-field label { font-weight: 600; color: #333; font-size: 10pt; min-width: 0; flex: 1; }
  .calc-field input, .calc-field select, .calc-field textarea {
    border: 1px solid #888 !important;
    background: #fff !important;
    padding: 1px 6px !important;
    font-size: 10pt !important;
    color: #000 !important;
    min-width: 80px;
  }

  /* Result cards */
  .calc-results {
    display: block !important;
    background: #fafafa !important;
    box-shadow: none !important;
    border: 1px solid #888;
    padding: 10px 14px !important;
    margin: 14px 0 !important;
    page-break-inside: avoid;
  }
  .calc-results-grid { display: block !important; }
  .calc-result-item {
    display: flex !important;
    justify-content: space-between;
    padding: 4px 0;
    border-bottom: 1px solid #ddd;
    font-size: 10pt;
  }
  .calc-result-item:last-child { border-bottom: none; }
  .calc-result-label { color: #444; }
  .calc-result-value { color: #1a3a5c; font-weight: 600; font-family: 'Cascadia Code', 'Consolas', 'Courier New', monospace; }
  .calc-result-highlight .calc-result-value { color: #003B49; font-weight: 700; }
  .calc-note { font-size: 8.5pt !important; color: #666 !important; font-style: italic; margin-top: 6px; }

  /* Methodology block */
  .res-disclaimer {
    font-size: 8.5pt !important;
    color: #555 !important;
    margin-top: 16px;
    padding: 8px 12px;
    border: 1px dashed #aaa;
    background: #f8f8f8;
    page-break-inside: avoid;
  }
  .res-disclaimer strong { color: #1a3a5c; }

  /* Sub-tab buttons hidden anyway via .calc-subtabs above */

  /* Hide dual-button ↔ wrappers (T2R/R2T toggles inside panels) */
  .calc-dir-btns, .calc-mode-btns { display: none !important; }

  /* (Footer is now a real DOM element .print-footer with data-ro/en/de — see above) */

  /* Page setup — compact margins to fit content on one page */
  @page {
    size: A4 portrait;
    margin: 0.8cm 1cm;
  }
  body { margin: 0 !important; padding: 0 !important; }

  /* Avoid breaking inside critical blocks */
  .calc-widget { page-break-inside: avoid; }
}