/* KABEL — paleta: šedá #9f9fa1 · oranžová #db6c2f · text #464646 · nadpisy #000 */

:root {
  --color-gray: #9f9fa1;
  --color-orange: #db6c2f;
  --color-text: #464646;
  --color-heading: #000000;
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-muted: #9f9fa1;
  --color-border: #9f9fa1;
  --color-primary: #db6c2f;
  --color-primary-dark: #db6c2f;
  --color-accent: #db6c2f;
  --color-gray-light: color-mix(in srgb, #9f9fa1 18%, #ffffff);
  --color-orange-light: color-mix(in srgb, #db6c2f 12%, #ffffff);
  --radius: 10px;
  --shadow: 0 2px 12px color-mix(in srgb, #464646 8%, transparent);
  --max-width: 1100px;
  --font: "Inter", system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-heading);
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-orange);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.85rem;
}

.logo {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-heading);
  text-decoration: none;
}

.logo * {
  color: inherit;
}

.logo__topne {
  color: var(--color-heading);
}

.logo__and {
  color: var(--color-gray);
}

.logo__termostaty {
  color: var(--color-orange);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-orange);
}

.lang-switch {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  margin-left: 0.25rem;
}

.lang-switch__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 30px;
  padding: 0 0.55rem;
  border: 1px solid color-mix(in srgb, var(--color-border) 60%, transparent);
  border-radius: 999px;
  font-size: 0.8rem;
  line-height: 1;
  color: var(--color-text);
  text-decoration: none;
  background: color-mix(in srgb, var(--color-surface) 90%, var(--color-orange-light));
}

.lang-switch__link:hover {
  border-color: var(--color-orange);
  color: var(--color-orange);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-heading);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-header.is-nav-open .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.is-nav-open .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.site-header.is-nav-open .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  .site-header .container {
    flex-wrap: wrap;
    align-items: center;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-header .container > nav {
    display: none;
    width: 100%;
    order: 3;
  }

  .site-header.is-nav-open .container > nav {
    display: block;
  }

  .site-nav {
    flex-direction: column;
    gap: 0;
    padding: 0.35rem 0 0.85rem;
    border-top: 1px solid var(--color-border);
    margin-top: 0.35rem;
  }

  .site-nav li {
    width: 100%;
  }

  .site-nav a {
    display: block;
    padding: 0.7rem 0;
    font-size: 1rem;
    border-bottom: 1px solid color-mix(in srgb, var(--color-border) 35%, transparent);
  }

  .lang-switch {
    margin-top: 0.35rem;
    padding-top: 0.6rem;
    border-top: 1px solid color-mix(in srgb, var(--color-border) 35%, transparent);
  }

  .lang-switch__link {
    height: 36px;
    font-size: 0.95rem;
  }

  .site-nav li:last-child a {
    border-bottom: none;
  }

  body.nav-open {
    overflow: hidden;
  }
}

/* Hero */
.hero {
  background-color: #9f9fa1;
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.45), rgba(0, 0, 0, 0.45)),
    url("../images/hero_01.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: #ffffff;
  padding: 3rem 0;
}

.hero--product {
  padding: 2.5rem 0;
}

.hero--banner {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: #ffffff;
  padding: 2.5rem 0;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.2;
  color: #db6c2f;
}

.hero .subtitle {
  margin: 0 0 1rem;
  font-size: 1.15rem;
  color: #ffffff;
}

.hero .intro {
  margin: 0 0 1.5rem;
  max-width: 60ch;
  color: #ffffff;
}

.hero .breadcrumb,
.hero .breadcrumb a {
  color: #ffffff;
}

.hero .breadcrumb a:hover {
  color: #db6c2f;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s, filter 0.15s;
}

.btn-primary {
  background: var(--color-orange);
  color: #ffffff;
  border-color: var(--color-orange);
}

.btn-primary:hover {
  filter: brightness(0.92);
  text-decoration: none;
  color: #ffffff;
}

.hero .btn-primary,
.cta-block .btn-primary {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: #ffffff;
}

.hero .btn-primary:hover,
.cta-block .btn-primary:hover {
  filter: brightness(0.92);
}

.btn-secondary {
  background: transparent;
  color: var(--color-heading);
  border-color: var(--color-heading);
}

.btn-secondary:hover {
  background: color-mix(in srgb, #000000 8%, transparent);
  text-decoration: none;
  color: var(--color-heading);
}

.hero .btn-secondary {
  color: #ffffff;
  border-color: #ffffff;
}

.hero .btn-secondary:hover {
  background: color-mix(in srgb, #ffffff 15%, transparent);
  color: #ffffff;
}

.btn-outline {
  background: var(--color-surface);
  color: var(--color-orange);
  border-color: var(--color-orange);
}

.btn-outline:hover {
  background: var(--color-orange-light);
  text-decoration: none;
  color: var(--color-orange);
}

/* Product range intro (index) */
.product-range-intro {
  padding-top: 2.5rem;
}

.product-range-intro h1,
.product-range-intro h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  line-height: 1.25;
  color: var(--color-heading);
}

.product-range-lead {
  margin: 0 0 2rem;
  color: var(--color-text);
  line-height: 1.65;
}

.product-range-gallery {
  width: 80%;
  margin: 0 auto;
}

.product-range-grid figure {
  margin: 0;
}

.product-range-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.product-range-grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.product-range-grid img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
  box-shadow: var(--shadow);
}

.product-range-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

@media (max-width: 720px) {
  .product-range-gallery {
    width: 100%;
  }

  .product-range-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-range-grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .product-range-grid,
  .product-range-grid--2 {
    grid-template-columns: 1fr;
  }
}

/* Overview page */
.overview-media {
  width: 80%;
  margin: 0 auto;
}

.overview-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  display: block;
  box-shadow: var(--shadow);
}

.overview-list {
  margin: 0 0 2rem;
  padding-left: 1.25rem;
  color: var(--color-text);
  line-height: 1.65;
}

.overview-list li + li {
  margin-top: 1rem;
}

.application-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.application-item {
  margin: 0;
  text-align: center;
}

.application-item img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
  box-shadow: var(--shadow);
}

.application-item figcaption {
  margin-top: 0.65rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-heading);
  line-height: 1.35;
}

@media (max-width: 720px) {
  .overview-media {
    width: 100%;
  }

  .application-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .application-grid {
    grid-template-columns: 1fr;
  }
}

/* Category navigation (index) */
.category-nav-wrap {
  margin-top: 2.5rem;
}

.category-nav-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.category-nav-card {
  display: block;
  text-decoration: none;
  color: inherit;
  text-align: center;
  transition: transform 0.15s ease;
}

.category-nav-card:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.category-nav-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
  box-shadow: var(--shadow);
}

.category-nav-card span {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-heading);
  line-height: 1.35;
}

.category-nav-card:hover span {
  color: var(--color-orange);
}

@media (max-width: 720px) {
  .category-nav-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .category-nav-grid {
    grid-template-columns: 1fr;
  }
}

/* Sections */
.section {
  padding: 2.5rem 0;
}

.section--alt {
  background: var(--color-gray-light);
}

.section h2 {
  margin: 0 0 1.25rem;
  font-size: 1.5rem;
  color: var(--color-heading);
}

.section h3 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  color: var(--color-heading);
}

/* Cards grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: var(--color-heading);
}

.card p {
  margin: 0 0 1rem;
  color: var(--color-text);
  font-size: 0.95rem;
}

.card .badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: var(--color-orange-light);
  color: var(--color-orange);
  margin-bottom: 0.5rem;
}

.card .badge--planned {
  background: var(--color-gray-light);
  color: var(--color-gray);
}

.card--product {
  display: flex;
  flex-direction: column;
}

.card--product img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: calc(var(--radius) - 2px);
  margin: 0 0 1rem;
  display: block;
}

.card--product .btn {
  margin-top: auto;
}

/* Benefits list */
.benefits-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.benefits-list li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  color: var(--color-text);
}

.benefits-list li::before {
  content: "✓";
  color: var(--color-orange);
  font-weight: 700;
  margin-right: 0.5rem;
}

/* Tags */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tag-list li {
  background: var(--color-gray-light);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.875rem;
}

/* Tables */
.specs-table,
.variants-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 0.95rem;
}

.specs-table th,
.specs-table td,
.variants-table th,
.variants-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.specs-table th,
.variants-table th {
  background: var(--color-gray-light);
  font-weight: 600;
  color: var(--color-heading);
}

.specs-table th {
  width: 35%;
}

/* Minimat — přehled typů D/F/E/A (5 sloupců, dle PDF) */
.minimat-types-table th,
.minimat-types-table td {
  width: auto;
  vertical-align: top;
}

.minimat-types-table th:nth-child(1),
.minimat-types-table td:nth-child(1) {
  width: 6.5rem;
  white-space: nowrap;
}

.minimat-types-table th:nth-child(4),
.minimat-types-table td:nth-child(4) {
  white-space: nowrap;
}

.minimat-types-table th:nth-child(5),
.minimat-types-table td:nth-child(5) {
  width: 5.5rem;
  white-space: nowrap;
  text-align: right;
}

.minimat-types-table td:nth-child(5) {
  text-align: right;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.table-wrap--figure {
  border: none;
  margin-top: 1.5rem;
}

.table-wrap--figure img {
  display: block;
  width: 80%;
  margin-left: auto;
  margin-right: auto;
  height: auto;
}

/* FAQ */
.faq-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.faq-list li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.faq-list strong {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--color-heading);
}

/* Downloads */
.download-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.download-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

/* CTA block */
.cta-block {
  background-color: #9f9fa1;
  background-image: none;
  color: var(--color-text);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
}

.cta-block h2 {
  color: var(--color-heading);
  margin-bottom: 0.5rem;
}

.cta-block p {
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

/* Form */
.form-grid {
  display: grid;
  gap: 1rem;
  max-width: 520px;
}

.form-grid label {
  display: grid;
  gap: 0.35rem;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--color-heading);
}

.form-grid input,
.form-grid textarea,
.form-grid select {
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font: inherit;
  color: var(--color-text);
  background: var(--color-surface);
}

.form-grid input:focus,
.form-grid textarea:focus,
.form-grid select:focus {
  outline: 2px solid var(--color-orange);
  outline-offset: 1px;
  border-color: var(--color-orange);
}

.form-grid textarea {
  min-height: 120px;
  resize: vertical;
}

.form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-notice {
  max-width: 520px;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.form-notice--success {
  background: #e8f5e9;
  border: 1px solid #a5d6a7;
  color: #1b5e20;
}

.form-notice--error {
  background: #ffebee;
  border: 1px solid #ef9a9a;
  color: #b71c1c;
}

/* Breadcrumb */
.breadcrumb {
  font-size: 0.875rem;
  color: var(--color-gray);
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: var(--color-gray);
}

.breadcrumb a:hover {
  color: var(--color-orange);
}

/* Footer */
.site-footer {
  background: var(--color-gray);
  color: #ffffff;
  padding: 2rem 0;
  margin-top: 2rem;
  font-size: 0.9rem;
}

.site-footer a {
  color: #ffffff;
}

.site-footer a:hover {
  opacity: 0.85;
  text-decoration: underline;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

/* Phase labels */
.phase-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-gray);
  margin: 2rem 0 1rem;
}

/* Product tabs */
.tab-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tab-bar--secondary {
  margin-top: 0.5rem;
}

.tab-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.tab-btn:hover:not(:disabled) {
  border-color: var(--color-orange);
  color: var(--color-orange);
}

.tab-btn.is-active {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: #ffffff;
}

.tab-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.variant-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.variant-search {
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font: inherit;
  min-width: min(100%, 280px);
  color: var(--color-text);
}

.variant-search:focus {
  outline: 2px solid var(--color-orange);
  outline-offset: 1px;
  border-color: var(--color-orange);
}

.variant-meta {
  margin: 0 0 0.75rem;
  color: var(--color-gray);
  font-size: 0.9rem;
}

.variant-error {
  padding: 1rem;
  background: var(--color-orange-light);
  border: 1px solid var(--color-orange);
  border-radius: var(--radius);
  color: var(--color-text);
}

.variants-table code {
  font-size: 0.85rem;
  white-space: nowrap;
  color: var(--color-heading);
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.specs-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}

.specs-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  color: var(--color-heading);
}

.specs-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text);
}

.note-box {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  background: var(--color-gray-light);
  border-left: 4px solid var(--color-orange);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.95rem;
  color: var(--color-text);
}

/* Product series blocks (category pages) */
.product-series-list {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.product-series {
  display: grid;
  grid-template-columns: minmax(220px, 300px) 1fr;
  gap: 1.5rem 2rem;
  align-items: start;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--color-border);
}

.product-series:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.product-series__image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  display: block;
  box-shadow: var(--shadow);
}

.product-series__content h2 {
  margin: 0 0 0.75rem;
  font-size: 1.35rem;
}

.product-series__content > p {
  margin: 0 0 1rem;
  color: var(--color-text);
}

.product-series__content .benefits-list,
.product-series__content .tag-list {
  margin: 0 0 1.25rem;
}

.product-series__content .table-wrap {
  margin-bottom: 1.25rem;
}

@media (max-width: 768px) {
  .product-series {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero-actions {
    flex-direction: column;
  }

  .btn {
    text-align: center;
  }
}