/* Tkortele.lt — Industrial Professionalism design system */
:root {
  --primary: #e8661a;
  --primary-dark: #d05614;
  --primary-bg: #fff8f0;
  --dark: #2c2c2c;
  --dark-hover: #444444;
  --gray-bg: #f7f7f7;
  --gray-border: #e5e5e5;
  --gray-text: #666666;
  --gray-muted: #999999;
  --white: #ffffff;
  --success: #16a34a;
  --error: #dc2626;
  --stripe: #635bff;
  --radius: 2px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(44,44,44,0.08);
  --shadow-lg: 0 12px 40px rgba(44,44,44,0.18);
  --header-h: 72px;
  --topbar-h: 36px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--dark);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: transparent; }
input, select, textarea { font-family: inherit; font-size: 15px; }
img, svg { display: block; max-width: 100%; }

.tk-container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.tk-accent { color: var(--primary); }
.tk-muted { color: var(--gray-muted); }
.tk-small { font-size: 12px; }
.tk-text-center { text-align: center; }
.tk-hide-sm { display: inline; }
.tk-hide-md { display: inline-flex; }
@media (max-width: 860px) { .tk-hide-md { display: none; } }
@media (max-width: 600px) { .tk-hide-sm { display: none; } }

/* Typography */
.tk-h1 { font-size: 48px; line-height: 1.12; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 20px; text-wrap: balance; }
.tk-h2 { font-size: 32px; line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; margin: 0 0 12px; }
.tk-h3 { font-size: 20px; line-height: 1.4; font-weight: 700; margin: 0; }
.tk-lead { font-size: 16px; line-height: 1.65; color: var(--gray-text); margin: 0 0 28px; max-width: 56ch; }
.tk-eyebrow { font-size: 11px; line-height: 1.4; text-transform: uppercase; letter-spacing: 0.12em; font-weight: 700; color: var(--primary); margin-bottom: 10px; }

/* Buttons */
.tk-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; padding: 0 16px;
  font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
  border-radius: var(--radius); border: 1px solid transparent;
  transition: background .15s, border-color .15s, color .15s, box-shadow .15s;
  white-space: nowrap;
}
.tk-btn-lg { height: 48px; padding: 0 22px; font-size: 13px; }
.tk-btn-block { width: 100%; }
.tk-btn-primary { background: var(--primary); color: var(--white); }
.tk-btn-primary:hover:not(:disabled) { background: var(--primary-dark); }
.tk-btn-primary:disabled { background: var(--gray-border); color: var(--gray-muted); cursor: not-allowed; }
.tk-btn-outline { border-color: var(--gray-border); color: var(--dark); background: var(--white); }
.tk-btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.tk-btn-outline-accent { border-color: var(--primary); color: var(--primary); background: var(--white); }
.tk-btn-outline-accent:hover { background: var(--primary-bg); }
.tk-btn-outline-light { border-color: rgba(255,255,255,0.25); color: var(--white); background: transparent; }
.tk-btn-outline-light:hover { border-color: var(--white); background: rgba(255,255,255,0.05); }
.tk-btn-ghost { color: var(--dark); padding: 0 12px; }
.tk-btn-ghost:hover { color: var(--primary); }
.tk-btn-stripe { background: var(--stripe); color: var(--white); }
.tk-btn-stripe:hover { filter: brightness(1.05); }
.tk-btn-icon { width: 40px; padding: 0; border: 1px solid var(--gray-border); background: var(--white); color: var(--dark); }
.tk-btn-icon:hover { border-color: var(--primary); color: var(--primary); }
.tk-btn-icon-sm { width: 28px; height: 28px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--gray-border); border-radius: var(--radius); color: var(--gray-text); }
.tk-btn-icon-sm:hover { border-color: var(--primary); color: var(--primary); }
.tk-btn-icon-danger:hover { border-color: var(--error); color: var(--error); }
.tk-btn-trash { width: 28px; height: 28px; color: var(--gray-muted); border: 1px solid var(--gray-border); border-radius: var(--radius); display: inline-flex; align-items: center; justify-content: center; }
.tk-btn-trash:hover { color: var(--error); border-color: var(--error); }

/* Badge */
.tk-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em;
}
.tk-badge-accent { background: var(--primary); color: var(--white); }

/* Top bar */
.tk-topbar { background: var(--dark); color: #cfcfcf; font-size: 12px; }
.tk-topbar-inner { display: flex; align-items: center; justify-content: space-between; height: var(--topbar-h); }
.tk-topbar-left, .tk-topbar-right { display: flex; gap: 20px; align-items: center; }
.tk-topbar-link { display: inline-flex; align-items: center; gap: 6px; color: #cfcfcf; transition: color .15s; }
.tk-topbar-link:hover { color: var(--primary); }
.tk-topbar-social { width: 24px; height: 24px; justify-content: center; }
@media (max-width: 640px) { .tk-topbar-left span { display: none; } }

/* Header */
.tk-header {
  position: sticky; top: 0; z-index: 40; background: var(--white);
  border-bottom: 1px solid var(--gray-border); transition: box-shadow .2s;
}
.tk-header.is-scrolled { box-shadow: var(--shadow-md); }
.tk-header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 24px; }
.tk-logo { display: flex; align-items: center; gap: 12px; }
.tk-logo-mark {
  width: 40px; height: 40px; background: var(--dark); color: var(--white);
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 20px;
  border-bottom: 3px solid var(--primary);
}
.tk-logo-text { line-height: 1.1; }
.tk-logo-name { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; }
.tk-logo-name-footer { font-size: 24px; color: var(--white); margin-bottom: 12px; }
.tk-logo-sub { font-size: 9px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--gray-muted); font-weight: 600; margin-top: 2px; }
@media (max-width: 720px) { .tk-logo-sub { display: none; } }

.tk-nav { display: flex; gap: 4px; }
.tk-nav-link {
  padding: 8px 14px; font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--dark); border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tk-nav-link:hover { color: var(--primary); }
.tk-nav-link.is-active { color: var(--primary); border-bottom-color: var(--primary); }
@media (max-width: 900px) { .tk-nav { display: none; } }

.tk-header-actions { display: flex; gap: 8px; align-items: center; }
.tk-cart-btn { position: relative; padding-right: 18px; }
.tk-cart-count {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--white); color: var(--primary); font-weight: 800;
  min-width: 22px; height: 22px; padding: 0 6px; border-radius: 2px; font-size: 12px;
  margin-left: 4px;
}

/* Hero */
.tk-hero {
  position: relative; background: linear-gradient(135deg, #2c2c2c 0%, #3a3a3a 55%, #2c2c2c 100%);
  color: var(--white); overflow: hidden; padding: 72px 0 88px;
}
.tk-hero-pattern {
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(135deg, transparent 0, transparent 28px, rgba(232,102,26,0.06) 28px, rgba(232,102,26,0.06) 29px);
  pointer-events: none;
}
.tk-hero-grid {
  position: relative; display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center;
}
.tk-hero-left h1 { color: var(--white); }
.tk-hero-left .tk-lead { color: #bdbdbd; }
.tk-hero-usps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 32px; }
.tk-usp {
  display: flex; align-items: center; gap: 8px; padding: 12px 14px;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em;
}
.tk-usp svg { color: var(--primary); flex: 0 0 auto; }
.tk-hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.tk-hero-right { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.tk-stat {
  padding: 28px 24px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  border-left: 3px solid var(--primary);
}
.tk-stat-num { font-size: 40px; font-weight: 700; letter-spacing: -0.02em; line-height: 1; margin-bottom: 8px; }
.tk-stat-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: #bdbdbd; font-weight: 600; }
@media (max-width: 960px) {
  .tk-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .tk-h1 { font-size: 36px; }
}
@media (max-width: 600px) {
  .tk-hero { padding: 48px 0 56px; }
  .tk-hero-usps { grid-template-columns: 1fr; }
  .tk-hero-right { display: none; }
}

/* Trust strip */
.tk-trust { background: var(--primary-bg); border-bottom: 4px solid var(--primary); padding: 36px 0; }
.tk-trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.tk-trust-item { display: flex; gap: 14px; align-items: flex-start; }
.tk-trust-icon {
  width: 44px; height: 44px; flex: 0 0 auto;
  background: var(--primary); color: var(--white);
  display: flex; align-items: center; justify-content: center;
}
.tk-trust-title { font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; margin: 2px 0 6px; }
.tk-trust-text { font-size: 13px; color: var(--gray-text); margin: 0; line-height: 1.55; }
@media (max-width: 900px) { .tk-trust-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; } }
@media (max-width: 520px) { .tk-trust-grid { grid-template-columns: 1fr; } }

/* Section */
.tk-section { padding: 72px 0; }
.tk-section-light { background: var(--white); }
.tk-section-gray { background: var(--gray-bg); }
.tk-section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.tk-section-head-left { text-align: left; margin-left: 0; }
.tk-section-sub { color: var(--gray-text); margin: 0; font-size: 15px; }

/* Steps */
.tk-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tk-step {
  background: var(--gray-bg); padding: 32px 28px; border-left: 4px solid var(--primary);
  position: relative;
}
.tk-step-num { font-size: 44px; font-weight: 800; color: var(--primary); line-height: 1; margin-bottom: 14px; letter-spacing: -0.02em; }
.tk-step-title { font-size: 18px; font-weight: 700; margin: 0 0 10px; }
.tk-step-text { color: var(--gray-text); margin: 0; font-size: 14px; line-height: 1.6; }
@media (max-width: 860px) { .tk-steps { grid-template-columns: 1fr; } }

/* Catalog */
.tk-catalog { display: grid; grid-template-columns: 260px 1fr; gap: 32px; align-items: flex-start; }
.tk-sidebar { position: sticky; top: calc(var(--header-h) + 16px); }
.tk-sidebar-head { font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; font-weight: 700; color: var(--gray-muted); margin-bottom: 10px; padding-left: 2px; }
.tk-cat-list { display: flex; flex-direction: column; gap: 4px; margin-bottom: 24px; }
.tk-cat-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 11px 14px; background: var(--white); border: 1px solid var(--gray-border);
  font-size: 13px; font-weight: 600; text-align: left; color: var(--dark);
  transition: all .15s;
}
.tk-cat-item:hover { border-color: var(--dark); }
.tk-cat-item.is-active { background: var(--primary); border-color: var(--primary); color: var(--white); }
.tk-cat-count { font-size: 11px; font-weight: 700; color: var(--gray-muted); background: var(--gray-bg); padding: 2px 8px; border-radius: 2px; }
.tk-cat-item.is-active .tk-cat-count { background: rgba(255,255,255,0.18); color: var(--white); }

.tk-side-info {
  padding: 16px; background: var(--white); border: 1px solid var(--gray-border);
  margin-bottom: 12px;
}
.tk-side-info-accent { border-left: 3px solid var(--primary); }
.tk-side-info-title { display: flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 6px; }
.tk-side-info-title svg { color: var(--primary); }
.tk-side-info p { font-size: 12px; color: var(--gray-text); margin: 0; line-height: 1.55; }

.tk-catalog-main { min-width: 0; }
.tk-toolbar { display: flex; gap: 12px; margin-bottom: 16px; }
.tk-search {
  flex: 1; display: flex; align-items: center; gap: 10px;
  padding: 0 14px; background: var(--white); border: 1px solid var(--gray-border); height: 44px;
  transition: border-color .15s;
}
.tk-search:focus-within { border-color: var(--primary); }
.tk-search svg { color: var(--gray-muted); flex: 0 0 auto; }
.tk-search-input { flex: 1; border: 0; outline: 0; background: transparent; font-size: 14px; }
.tk-sort { display: flex; align-items: center; gap: 10px; background: var(--white); border: 1px solid var(--gray-border); padding: 0 14px; height: 44px; }
.tk-sort-label { font-size: 12px; color: var(--gray-muted); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }
.tk-sort-select { border: 0; outline: 0; background: transparent; font-size: 13px; font-weight: 600; cursor: pointer; }
@media (max-width: 640px) { .tk-toolbar { flex-direction: column; } .tk-sort { width: 100%; } }

.tk-count-bar {
  padding: 12px 16px; background: var(--white); border: 1px solid var(--gray-border);
  font-size: 13px; color: var(--gray-text); margin-bottom: 16px;
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.tk-count-bar strong { color: var(--dark); }
.tk-count-sep { color: var(--gray-border); }

.tk-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 1200px) { .tk-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 960px) { .tk-catalog { grid-template-columns: 1fr; } .tk-sidebar { position: static; } }
@media (max-width: 640px) { .tk-grid { grid-template-columns: 1fr; } }

/* Product card */
.tk-card {
  display: flex; flex-direction: column;
  background: var(--white); border: 1px solid var(--gray-border);
  transition: border-color .15s, box-shadow .15s, transform .15s;
}
.tk-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); }
.tk-card-top { padding: 20px 20px 16px; flex: 1; }
.tk-card-head { display: flex; gap: 8px; align-items: center; margin-bottom: 12px; flex-wrap: wrap; }
.tk-card-code { font-size: 12px; font-weight: 800; color: var(--primary); letter-spacing: 0.04em; }
.tk-card-str {
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em;
  background: var(--gray-bg); color: var(--gray-text);
  padding: 3px 8px; border: 1px solid var(--gray-border);
}
.tk-card-title { font-size: 16px; font-weight: 700; line-height: 1.35; margin: 0 0 6px; transition: color .15s; }
.tk-card:hover .tk-card-title { color: var(--primary); }
.tk-card-cat { font-size: 10px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--gray-muted); font-weight: 600; margin-bottom: 10px; }
.tk-card-desc {
  font-size: 13px; color: var(--gray-text); margin: 0 0 14px; line-height: 1.55;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.tk-card-meta { display: flex; gap: 8px; align-items: center; font-size: 11px; color: var(--gray-muted); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; flex-wrap: wrap; }
.tk-card-meta span { display: inline-flex; align-items: center; gap: 4px; }
.tk-meta-sep { color: var(--gray-border); }
.tk-card-foot {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 20px; background: var(--gray-bg); border-top: 1px solid var(--gray-border);
}
.tk-card-price { display: flex; align-items: baseline; gap: 6px; }
.tk-card-price-num { font-size: 20px; font-weight: 800; letter-spacing: -0.01em; }
.tk-card-price-vat { font-size: 11px; color: var(--gray-muted); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; }
.tk-card-actions { display: flex; gap: 6px; }

.tk-empty { padding: 80px 20px; text-align: center; color: var(--gray-muted); background: var(--white); border: 1px dashed var(--gray-border); }
.tk-empty svg { margin: 0 auto 16px; color: var(--gray-muted); }
.tk-empty p { margin: 0; font-size: 14px; }
.tk-empty-small { padding: 28px; }

/* === Nav improvements === */
.tk-nav-link { white-space: nowrap; }

.tk-nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--gray-border);
  width: 38px; height: 38px;
  border-radius: 4px;
  cursor: pointer;
  align-items: center; justify-content: center;
  color: var(--dark);
}
.tk-nav-toggle:hover { border-color: var(--primary); color: var(--primary); }

@media (max-width: 900px) {
  .tk-nav-toggle { display: inline-flex; }
  .tk-nav {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: var(--white);
    border-top: 1px solid var(--gray-border);
    box-shadow: var(--shadow-md);
    padding: 8px 16px 12px;
    gap: 0;
    z-index: 50;
  }
  .tk-nav.is-mobile-open { display: flex; }
  .tk-nav-link {
    padding: 12px 8px;
    border-bottom: 1px solid var(--gray-border);
    margin: 0;
  }
  .tk-nav-link:last-child { border-bottom: none; }
  .tk-nav-link.is-active { border-bottom-color: var(--gray-border); background: var(--gray-bg); }
  .tk-header { position: relative; }
}

@media (max-width: 600px) {
  .tk-header-actions .tk-btn-primary span:not(.tk-cart-count) { display: none; }
  .tk-cart-btn { padding-right: 12px; }
}