/* ==========================================================================
   Čistý okap — statický web
   Barvy: tmavá břidlice (#1e2830) + zelená akcent (#4d7268) + teplá okrová (#bd8b3d, jehličí/listí)
   ========================================================================== */

:root {
  --color-dark: #1e2830;
  --color-accent: #4d7268;
  --color-accent-warm: #bd8b3d;
  --color-bg: #f4f1eb;
  --color-bg-alt: #eae6de;
  --color-text: #2c3238;
  --color-text-muted: #5a6168;
  --color-border: #c8c2b6;
  --color-white: #ffffff;

  --font-heading: "Source Serif 4", Georgia, serif;
  --font-body: "Work Sans", sans-serif;

  --header-height: 4rem;
  --max-width: 72rem;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

a {
  color: var(--color-accent);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-dark);
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.015em;
  font-variant-numeric: lining-nums;
  color: var(--color-dark);
}

h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  font-weight: 500;
  margin: 0 0 var(--space-md);
}

h1 em {
  font-style: italic;
  font-weight: 500;
  color: var(--color-accent);
}

h2 {
  font-size: clamp(1.65rem, 3.4vw, 2.25rem);
  margin: 0 0 var(--space-sm);
}

h3 {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: normal;
  margin: 0 0 var(--space-xs);
}

p {
  margin: 0 0 var(--space-sm);
}

code {
  font-size: 0.9em;
  background: var(--color-bg-alt);
  padding: 0.1em 0.35em;
}

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

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-dark);
  color: var(--color-white);
  z-index: 200;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-sm);
}

/* Focus states */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-dark);
  border-bottom: 3px solid var(--color-accent);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: var(--space-sm);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--color-white);
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 500;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.logo-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  padding: 0.3rem;
  flex-shrink: 0;
}

.logo-mark {
  height: 1.5rem;
  width: auto;
  display: block;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 0.5rem;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.75rem;
}

.nav-toggle-bar {
  display: block;
  width: 1.375rem;
  height: 2px;
  background: var(--color-white);
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-child {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-nav .nav-list {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: var(--color-white);
  text-decoration: none;
  font-weight: 500;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  border-bottom-color: var(--color-accent-warm);
  color: var(--color-white);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 1.6rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.005em;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s, color 0.15s, transform 0.15s;
}

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

.btn-primary:hover {
  background: var(--color-dark);
  border-color: var(--color-dark);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* Hero */
.hero {
  padding: var(--space-xl) 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-lg);
  align-items: center;
}

.hero-lead {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 36ch;
  margin-bottom: var(--space-md);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-video-wrap {
  position: relative;
  width: 100%;
  max-width: 34rem;
}

.hero-video-wrap::before {
  content: "";
  position: absolute;
  top: 0.9rem;
  left: 0.9rem;
  right: -0.9rem;
  bottom: -0.9rem;
  border: 2px solid var(--color-accent-warm);
  z-index: 0;
}

.hero-video {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--color-border);
  background: var(--color-dark);
}

/* Process videos (pod "Jak to funguje?") */
.process-videos {
  margin-top: var(--space-lg);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.process-video h3 {
  margin-bottom: var(--space-xs);
  text-align: center;
}

.process-video video {
  display: block;
  width: 100%;
  max-width: 18rem;
  margin-inline: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--color-border);
  background: var(--color-dark);
}

/* Sections */
.section {
  padding: var(--space-xl) 0;
}

.section-alt {
  background: var(--color-bg-alt);
  border-block: 1px solid var(--color-border);
}

.section-intro {
  color: var(--color-text-muted);
  max-width: 55ch;
  margin-bottom: var(--space-lg);
}

/* Process steps */
.process-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 2px solid var(--color-dark);
}

.process-step {
  padding: var(--space-md) var(--space-sm) var(--space-md) 0;
  border-right: 1px solid var(--color-border);
  position: relative;
}

.process-step:last-child {
  border-right: none;
}

.step-num {
  display: block;
  font-family: var(--font-heading);
  font-style: italic;
  font-variant-numeric: lining-nums;
  font-size: 2.25rem;
  font-weight: 600;
  color: var(--color-accent-warm);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.process-step p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-aside {
  border-left: 4px solid var(--color-accent);
  padding-left: var(--space-md);
}

.facts-list {
  margin: 0;
}

.facts-list div {
  margin-bottom: var(--space-md);
}

.facts-list div:last-child {
  margin-bottom: 0;
}

.facts-list dt {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-dark);
  margin-bottom: 0.15rem;
}

.facts-list dd {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* Gallery: before/after */
.before-after {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.before-after figure {
  margin: 0;
}

.before-after img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--color-border);
}

.before-after figcaption {
  text-align: center;
  margin-top: var(--space-xs);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-dark);
}

/* Gallery: reference photos */
.ref-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.ref-grid img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--color-border);
}

/* Contact */
.section-contact {
  background: var(--color-dark);
  color: var(--color-bg);
}

.section-contact h2 {
  color: var(--color-white);
}

.section-contact p {
  color: rgba(244, 241, 235, 0.85);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.contact-list {
  list-style: none;
  margin: var(--space-md) 0 0;
  padding: 0;
}

.contact-list li {
  margin-bottom: var(--space-sm);
}

.contact-label {
  display: block;
  font-size: 0.8125rem;
  color: rgba(244, 241, 235, 0.6);
  margin-bottom: 0.15rem;
}

.contact-list a {
  color: var(--color-white);
  font-weight: 500;
  font-size: 1.0625rem;
}

.contact-list a:hover {
  color: var(--color-accent-warm);
}

/* Contact: people */
.contact-people {
  list-style: none;
  margin: var(--space-md) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.contact-people li {
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(244, 241, 235, 0.2);
}

.contact-name {
  margin: 0 0 0.15rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--color-white);
}

.contact-role {
  margin: 0 0 var(--space-xs);
  font-size: 0.875rem;
  color: rgba(244, 241, 235, 0.7);
}

.contact-people a {
  color: var(--color-white);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid rgba(244, 241, 235, 0.4);
}

.contact-people a:hover {
  color: var(--color-accent-warm);
  border-bottom-color: var(--color-accent-warm);
}

/* Form */
.contact-form {
  background: var(--color-white);
  padding: var(--space-md);
  color: var(--color-text);
}

.form-row {
  margin-bottom: var(--space-sm);
}

.form-row label {
  display: block;
  font-weight: 500;
  font-size: 0.9375rem;
  margin-bottom: 0.25rem;
  color: var(--color-dark);
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 0.625rem 0.75rem;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--color-accent);
  outline: none;
  box-shadow: 0 0 0 2px rgba(77, 114, 104, 0.25);
}

.form-row textarea {
  resize: vertical;
  min-height: 6rem;
}

.form-consent {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
}

.form-consent input {
  width: auto;
  margin-top: 0.25rem;
  flex-shrink: 0;
}

.form-consent label {
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.form-consent a {
  color: var(--color-accent);
}

.honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
}

.contact-form .btn-primary {
  width: 100%;
  margin-top: var(--space-xs);
}

/* Footer */
.site-footer {
  background: #151b20;
  color: rgba(244, 241, 235, 0.7);
  padding: var(--space-lg) 0 var(--space-md);
  font-size: 0.9375rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-name {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-white);
  font-size: 1.0625rem;
  margin: 0 0 0.25rem;
}

.footer-brand p {
  margin: 0 0 0.15rem;
}

.footer-note {
  opacity: 0.5;
  font-size: 0.8125rem;
}

.footer-nav a {
  color: rgba(244, 241, 235, 0.7);
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--color-white);
}

.footer-copy {
  margin: var(--space-sm) auto 0;
  font-size: 0.8125rem;
  opacity: 0.5;
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 150;
  background: var(--color-white);
  border-top: 3px solid var(--color-accent);
  padding: var(--space-md);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
}

.cookie-banner[hidden] {
  display: none;
}

.cookie-inner {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm) var(--space-md);
}

.cookie-title {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-dark);
  margin: 0;
  width: 100%;
}

.cookie-inner p {
  flex: 1;
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  min-width: 16rem;
}

.cookie-inner .btn {
  flex-shrink: 0;
}

/* Privacy page */
.page-legal {
  padding: var(--space-xl) 0;
}

.page-legal h1 {
  margin-bottom: var(--space-md);
}

.page-legal h2 {
  font-size: 1.25rem;
  margin-top: var(--space-lg);
}

.page-legal p,
.page-legal li {
  max-width: 65ch;
}

.back-link {
  display: inline-block;
  margin-bottom: var(--space-md);
  text-decoration: none;
  font-weight: 500;
}

.back-link:hover {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .process-steps {
    grid-template-columns: 1fr 1fr;
  }

  .process-step:nth-child(2) {
    border-right: none;
  }

  .process-step:nth-child(1),
  .process-step:nth-child(2) {
    border-bottom: 1px solid var(--color-border);
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .process-videos {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }

  .site-nav.is-open {
    max-height: 12rem;
  }

  .site-nav .nav-list {
    flex-direction: column;
    padding: var(--space-sm) var(--space-md) var(--space-md);
    gap: 0;
  }

  .site-nav .nav-list a {
    display: block;
    padding: var(--space-xs) 0;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .process-step {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding-right: 0;
  }

  .process-step:last-child {
    border-bottom: none;
  }

  .before-after {
    grid-template-columns: 1fr;
  }

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

  .contact-people {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
  }

  .cookie-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .cookie-inner .btn {
    width: 100%;
  }
}