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

:root {
  --primary: #1a2a4a;
  --accent: #e8600a;
  --accent-dark: #c44f00;
  --light: #f5f7fa;
  --white: #ffffff;
  --text: #333333;
  --text-light: #666666;
  --border: #dddddd;
  --shadow: 0 2px 16px rgba(0,0,0,0.10);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--white);
}

h1, h2, h3, h4 { line-height: 1.2; }

a { color: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ── Header ── */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: var(--primary);
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  color: var(--white);
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 1px;
}

.logo span { color: var(--accent); }

nav ul {
  list-style: none;
  display: flex;
  gap: 32px;
}

nav a {
  color: rgba(255,255,255,0.82);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}

nav a:hover, nav a.active { color: var(--accent); }

.lang-li { margin-left: 8px; border-left: 1px solid rgba(255,255,255,0.18); padding-left: 20px; }
.lang-switch { font-size: 0.78rem !important; font-weight: 700 !important; border: 1px solid rgba(255,255,255,0.3); padding: 3px 10px; border-radius: 3px; letter-spacing: 0.5px; }
.lang-switch:hover { color: var(--white) !important; border-color: rgba(255,255,255,0.65); }

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn-primary { background: var(--accent); color: var(--white); }
.btn-primary:hover { background: var(--accent-dark); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.55);
  margin-left: 12px;
}
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.08); }

.btn-white { background: var(--white); color: var(--accent); font-weight: 700; }
.btn-white:hover { background: #f0f0f0; }

/* ── Hero ── */
.hero {
  margin-top: 70px;
  background: linear-gradient(135deg, #1a2a4a 0%, #253d6a 100%);
  padding: 110px 0;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.04) 1px, transparent 0);
  background-size: 36px 36px;
}

.hero-content { max-width: 600px; position: relative; }

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  margin: 12px 0 20px;
}

.hero h1 span { color: var(--accent); }

.hero p {
  font-size: 1.1rem;
  opacity: 0.85;
  margin-bottom: 36px;
  line-height: 1.75;
  max-width: 500px;
}

/* ── Section utilities ── */
section { padding: 80px 0; }

.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { font-size: 2.1rem; color: var(--primary); margin-bottom: 12px; }
.section-header p { color: var(--text-light); font-size: 1rem; max-width: 520px; margin: 0 auto; }

.section-label {
  display: inline-block;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

/* ── About strip ── */
.about-strip { background: var(--light); }

.about-grid {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.about-grid h2 { font-size: 2rem; color: var(--primary); margin-bottom: 16px; }
.about-grid p { color: var(--text-light); margin-bottom: 14px; line-height: 1.75; }
.about-grid .btn { margin-top: 8px; }

/* ── Spring cards ── */
.springs-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.spring-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  transition: box-shadow 0.2s, transform 0.2s;
  display: block;
}

.spring-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }

.spring-card-image {
  background: var(--primary);
  aspect-ratio: 3/2;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.25);
  font-size: 0.82rem;
  overflow: hidden;
}
.spring-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.spring-card-body { padding: 20px; }
.spring-card-body h3 { color: var(--primary); margin-bottom: 8px; font-size: 1.05rem; }
.spring-card-body p { color: var(--text-light); font-size: 0.88rem; line-height: 1.65; }

/* ── Features (dark) ── */
.features-bg { background: var(--primary); color: var(--white); }
.features-bg .section-header h2 { color: var(--white); }
.features-bg .section-header p { color: rgba(255,255,255,0.65); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-item { text-align: center; padding: 32px 20px; }

.feature-icon {
  width: 58px; height: 58px;
  background: rgba(232,96,10,0.18);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  font-size: 1.4rem;
}

.feature-item h3 { margin-bottom: 10px; font-size: 1.05rem; }
.feature-item p { color: rgba(255,255,255,0.65); font-size: 0.9rem; }

/* ── CTA banner ── */
.cta-banner { background: var(--accent); padding: 64px 0; text-align: center; color: var(--white); }
.cta-banner h2 { font-size: 2rem; margin-bottom: 12px; }
.cta-banner p { opacity: 0.9; margin-bottom: 28px; font-size: 1.05rem; }

/* ── Page heroes ── */
.page-hero {
  margin-top: 70px;
  padding: 64px 0;
  background: var(--light);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.page-hero h1 { font-size: 2.4rem; color: var(--primary); margin-bottom: 12px; }
.page-hero p { color: var(--text-light); font-size: 1.05rem; max-width: 540px; margin: 0 auto; }

.page-hero-dark {
  margin-top: 70px;
  padding: 64px 0;
  background: var(--primary);
  color: var(--white);
  text-align: center;
}

.page-hero-dark h1 { font-size: 2.4rem; margin-bottom: 12px; }
.page-hero-dark p { opacity: 0.8; max-width: 540px; margin: 0 auto; }

/* ── Products page ── */
.product-block { padding: 80px 0; border-bottom: 1px solid var(--border); }
.product-block:nth-child(even) { background: var(--light); }

.product-block-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.product-block:nth-child(even) .product-image { order: 2; }
.product-block:nth-child(even) .product-info  { order: 1; }

.product-image {
  background: var(--primary);
  aspect-ratio: 4/3;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.22);
  font-size: 0.88rem;
  overflow: hidden;
}
.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 8px;
}

.product-info .section-label { margin-bottom: 6px; }
.product-info h2 { font-size: 1.8rem; color: var(--primary); margin-bottom: 14px; }
.product-info p { color: var(--text-light); margin-bottom: 14px; line-height: 1.75; }

.spec-list { list-style: none; margin: 20px 0 24px; }
.spec-list li {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.spec-list li:last-child { border-bottom: none; }
.spec-key { font-weight: 600; color: var(--primary); min-width: 150px; }
.spec-val { color: var(--text-light); }

/* Materials */
.materials-section { background: var(--primary); color: var(--white); }
.materials-section .section-header h2 { color: var(--white); }
.materials-section .section-header p { color: rgba(255,255,255,0.65); }

.materials-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 720px; margin: 0 auto; }

.material-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 26px 22px;
}

.material-card h3 { margin-bottom: 8px; font-size: 1rem; }
.material-card p { color: rgba(255,255,255,0.6); font-size: 0.87rem; line-height: 1.65; }

/* ── Contact page ── */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 60px;
  padding: 80px 0;
}

.contact-info-col h2 { font-size: 1.5rem; color: var(--primary); margin-bottom: 28px; }

.contact-item { display: flex; gap: 16px; margin-bottom: 28px; align-items: flex-start; }

.contact-icon {
  width: 44px; height: 44px;
  background: rgba(232,96,10,0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-item-text strong { display: block; color: var(--primary); margin-bottom: 4px; font-size: 0.9rem; }
.contact-item-text span, .contact-item-text a { color: var(--text-light); font-size: 0.9rem; text-decoration: none; }
.contact-item-text a:hover { color: var(--accent); }

.hours-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.hours-table td { padding: 5px 0; font-size: 0.88rem; color: var(--text-light); }
.hours-table td:first-child { color: var(--text); font-weight: 500; width: 120px; }

.map-col h2 { font-size: 1.5rem; color: var(--primary); margin-bottom: 20px; }

.map-placeholder {
  background: #d0daea;
  border-radius: 8px;
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #778899;
  font-size: 0.88rem;
  border: 1px solid #bcc8da;
}

/* ── Order / Form page ── */
.order-layout {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 40px;
  align-items: start;
  padding: 60px 0;
}

.blueprint-container {
  background: #0a1628;
  border-radius: 10px;
  padding: 24px;
  position: sticky;
  top: 86px;
}

.blueprint-container > h3 {
  color: rgba(168,212,245,0.6);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.blueprint-img { width: 100%; border-radius: 6px; display: none; }
.blueprint-img.active { display: block; }

.blueprint-placeholder {
  aspect-ratio: 5/3;
  background: #111f3a;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(168,212,245,0.3);
  font-size: 0.88rem;
  text-align: center;
  padding: 20px;
  border: 1px dashed rgba(168,212,245,0.15);
}

.blueprint-legend { margin-top: 18px; }
.blueprint-legend h4 {
  color: rgba(168,212,245,0.45);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 10px;
}

.legend-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.legend-item { display: flex; gap: 8px; font-size: 0.8rem; color: rgba(255,255,255,0.55); }
.legend-var { color: #ffd700; font-weight: 700; min-width: 24px; font-family: monospace; }

/* Form card */
.order-form-card {
  background: var(--white);
  border-radius: 10px;
  padding: 36px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.order-form-card > h2 { font-size: 1.45rem; color: var(--primary); margin-bottom: 28px; }

.form-section { margin-bottom: 30px; }

.form-section-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--light);
}

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-full { grid-column: 1 / -1; }

.form-group { display: flex; flex-direction: column; gap: 5px; }

label { font-size: 0.82rem; font-weight: 600; color: var(--text); }

input, select, textarea {
  padding: 9px 13px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.92rem;
  font-family: inherit;
  color: var(--text);
  background: var(--white);
  transition: border-color 0.2s;
  width: 100%;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}

input[type="file"] { padding: 7px 13px; background: var(--light); }

textarea { resize: vertical; min-height: 90px; }

.dim-fields { display: none; }
.dim-fields.active { display: contents; }

.sketch-info {
  grid-column: 1 / -1;
  background: rgba(232,96,10,0.07);
  border: 1px solid rgba(232,96,10,0.22);
  border-radius: 6px;
  padding: 14px 16px;
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.65;
}

.btn-submit {
  width: 100%;
  padding: 15px;
  font-size: 1rem;
  font-weight: 700;
  background: var(--accent);
  color: var(--white);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 8px;
  font-family: inherit;
}

.btn-submit:hover { background: var(--accent-dark); }

/* Success message */
.form-success {
  display: none;
  background: #e8f5e9;
  border: 1px solid #a5d6a7;
  border-radius: 8px;
  padding: 24px;
  text-align: center;
  color: #2e7d32;
  margin-top: 16px;
}

.form-success h3 { margin-bottom: 8px; }
.form-success p { font-size: 0.92rem; }

/* ── Footer ── */
footer {
  background: var(--primary);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .logo { font-size: 1.25rem; display: inline-block; margin-bottom: 14px; }
.footer-brand p { font-size: 0.87rem; line-height: 1.75; max-width: 280px; }

.footer-col h4 {
  color: var(--white);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 0.87rem;
  transition: color 0.2s;
}
.footer-col ul li a:hover { color: var(--accent); }
.footer-col address { font-style: normal; font-size: 0.87rem; line-height: 1.85; }
.footer-col address a { color: rgba(255,255,255,0.6); text-decoration: none; }
.footer-col address a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}

/* ── Mobile nav ── */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
}

/* ── Responsive ── */
@media (max-width: 960px) {
  .springs-grid { grid-template-columns: repeat(3, 1fr); }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .product-block-inner,
  .contact-layout,
  .order-layout,
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .product-block:nth-child(even) .product-image,
  .product-block:nth-child(even) .product-info { order: unset; }
  .materials-grid { grid-template-columns: 1fr; }
  .blueprint-container { position: static; }
}

@media (max-width: 600px) {
  .springs-grid { grid-template-columns: 1fr 1fr; }
  .features-grid,
  .materials-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.1rem; }
  .btn-outline { margin-left: 0; margin-top: 10px; display: block; width: fit-content; }
  .form-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: flex; }
  nav ul {
    display: none;
    position: absolute;
    top: 70px; left: 0; right: 0;
    background: var(--primary);
    flex-direction: column;
    gap: 0;
    padding: 12px 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  }
  nav ul.open { display: flex; }
  nav ul li a { display: block; padding: 12px 24px; }
  .order-form-card { padding: 24px 18px; }
}