/* ============================================================
   Nechcioperaci.cz — Shared Stylesheet
   ============================================================ */

/* 1. Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* 2. Reset & Box-sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* 3. CSS Custom Properties */
:root {
  --color-primary:        #5673BA;
  --color-primary-dark:   #3F5A9E;
  --color-primary-light:  #E8EDF8;
  --color-primary-xlight: #F2F5FC;
  --color-accent:         #D7A500;
  --color-accent-dark:    #B08800;
  --color-accent-light:   #FFF8DC;
  --color-text:           #1a1a2e;
  --color-muted:          #6b7280;
  --color-border:         #e5e7eb;
  --color-bg:             #F7F8FC;
  --color-white:          #ffffff;
  --color-dark:           #111827;

  --radius:    12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow:    0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 40px rgba(0, 0, 0, 0.12);

  --header-height: 72px;
  --container-max: 1140px;
  --section-gap:   72px;
}

/* 4. Base Typography */
html {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-text);
}

h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }

p {
  color: var(--color-muted);
  line-height: 1.75;
}

/* 5. Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding-block: var(--section-gap);
}

.section-title {
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: 56px;
}

/* 6. Components */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  padding: 14px 28px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s, transform 0.15s;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(86, 115, 186, 0.3);
}

.btn:active {
  transform: translateY(0);
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-light);
  box-shadow: 0 6px 20px rgba(86, 115, 186, 0.15);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: transparent;
  padding-inline: 4px;
  font-size: 0.95rem;
}

.btn-ghost:hover {
  color: var(--color-primary-dark);
  box-shadow: none;
  transform: translateX(4px);
}

.btn-ghost::after {
  content: '→';
}

.btn-cta {
  background: var(--color-accent);
  color: var(--color-dark);
  border-color: var(--color-accent);
  font-size: 1.1rem;
  padding: 18px 40px;
}

.btn-cta:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  box-shadow: 0 8px 28px rgba(215, 165, 0, 0.4);
}

/* Cards */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.25s;
}

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

/* 7. Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-white);
  border-bottom: 2px solid var(--color-primary);
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}

.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: background 0.2s, color 0.2s;
}

.nav-links a:hover {
  background: var(--color-primary-xlight);
  color: var(--color-primary-dark);
}

.nav-links .nav-cta {
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-sm);
}

.nav-links .nav-cta:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
}

.nav-links a[aria-current="page"] {
  font-weight: 600;
}

.nav-links a[aria-current="page"]:not(:hover) {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

/* 8. Nav Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: inline-block;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  cursor: default;
  transition: background 0.2s, color 0.2s;
  user-select: none;
}

.nav-dropdown-trigger::after {
  content: '▾';
  font-size: 0.85rem;
  position: relative;
  top: -2px;
  margin-left: 6px;
}

.nav-dropdown:hover .nav-dropdown-trigger,
.nav-dropdown:focus-within .nav-dropdown-trigger {
  background: var(--color-primary-xlight);
  color: var(--color-primary-dark);
}

.nav-dropdown-trigger[aria-current="page"] {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-weight: 600;
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 3px);
  left: 0;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  min-width: 260px;
  display: flex;
  flex-direction: column;
  padding: 8px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 0.2s, transform 0.2s;
  z-index: 200;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-dropdown-menu::before {
  content: '';
  position: absolute;
  top: -3px;
  left: 0;
  right: 0;
  height: 3px;
}

.nav-dropdown-menu a {
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  transition: background 0.2s, color 0.2s;
}

.nav-dropdown-menu a:hover {
  background: var(--color-primary-xlight);
  color: var(--color-primary-dark);
}

.nav-dropdown-menu a[aria-current="page"] {
  font-weight: 600;
}

.nav-dropdown-menu a[aria-current="page"]:not(:hover) {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

/* 9. CTA Strip */
.cta-strip {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  padding-block: 80px;
  text-align: center;
}

.cta-strip h2 {
  color: var(--color-white);
  margin-bottom: 36px;
}

.cta-strip p {
  color: rgba(255,255,255,0.75);
  margin-bottom: 36px;
  font-size: 1.05rem;
}

.cta-disclaimer {
  margin-top: 20px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
}

/* 10. Footer */
.site-footer {
  background: var(--color-dark);
  color: #9ca3af;
  padding-block: 48px 32px;
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.footer-logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
}

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

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 24px;
}

.footer-links a {
  font-size: 0.9rem;
  color: #9ca3af;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-copy {
  font-size: 0.85rem;
  color: #6b7280;
}

/* 11. Hamburger button — hidden on desktop */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
}

/* 12. Responsive */
@media (max-width: 768px) {
  :root {
    --section-gap: 48px;
  }

  .btn {
    padding: 12px 20px;
    font-size: 0.95rem;
  }

  /* Header expands vertically when nav is open */
  .site-header {
    height: auto;
    min-height: var(--header-height);
  }

  /* Wrap nav to a second row below logo + hamburger */
  .site-header .container {
    flex-wrap: wrap;
    align-items: stretch;
    height: auto;
    gap: 0;
  }

  .logo {
    height: var(--header-height);
    display: flex;
    align-items: center;
    flex: 1;
  }

  /* Hamburger — show on mobile, vertically centred in header row */
  .nav-toggle {
    display: flex;
    align-self: center;
  }

  /* Nav hidden by default; wraps to full-width second row */
  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 8px 0 16px;
    border-top: 1px solid var(--color-border);
    gap: 2px;
    align-items: stretch;
  }

  .site-header.nav-open .nav-links {
    display: flex;
  }

  .nav-links a {
    padding: 12px 16px;
    font-size: 1rem;
  }

  /* Dropdown: always expanded inline on mobile */
  .nav-dropdown {
    display: flex;
    flex-direction: column;
  }

  .nav-dropdown-trigger {
    padding: 12px 16px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-muted);
    cursor: default;
  }

  .nav-dropdown-menu {
    position: static;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    box-shadow: none;
    border: none;
    border-left: 3px solid var(--color-border);
    margin-left: 16px;
    padding: 4px 0;
    border-radius: 0;
    min-width: 0;
  }

  .nav-dropdown-menu a {
    padding: 10px 16px;
  }

  /* Center images below text on mobile */
  .comparison-right {
    display: flex;
    justify-content: center;
  }

  .comparison-right img {
    margin-inline: auto;
  }
}

@media (max-width: 480px) {
  :root {
    --section-gap: 48px;
    --header-height: 60px;
  }

  .logo {
    font-size: 1.2rem;
  }
}