/* ========================================================================
   Variables
   ======================================================================== */

:root {
  /* Colors */
  --color-bg: #f5f5f6; /* light concrete */
  --color-bg-elevated: #ffffff;
  --color-bg-muted: #ebeced;

  --color-text: #111111;
  --color-text-muted: #6c6f75;
  --color-border-subtle: #dedfe2;
  --color-border-strong: #b4b6bc;

  /* Accent palette – soft industrial pastels + warm wood */
  --color-primary: #e07a5f; /* warm terracotta accent */
  --color-primary-soft: rgba(224, 122, 95, 0.08);

  --color-success: #3a7d5a;
  --color-success-soft: rgba(58, 125, 90, 0.08);

  --color-warning: #e3b341;
  --color-warning-soft: rgba(227, 179, 65, 0.1);

  --color-danger: #c5534a;
  --color-danger-soft: rgba(197, 83, 74, 0.1);

  /* Neutral grays – cool industrial */
  --gray-50: #f8f8f9;
  --gray-100: #f0f1f3;
  --gray-200: #e0e2e6;
  --gray-300: #c9ccd3;
  --gray-400: #a5a9b3;
  --gray-500: #808491;
  --gray-600: #5b5f6a;
  --gray-700: #3c4047;
  --gray-800: #25272c;
  --gray-900: #15161a;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  --font-display: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem;  /* 36px */
  --font-size-5xl: 3rem;     /* 48px */

  --line-height-tight: 1.15;
  --line-height-snug: 1.3;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-1: 2px;
  --space-2: 4px;
  --space-3: 6px;
  --space-4: 8px;
  --space-5: 10px;
  --space-6: 12px;
  --space-8: 16px;
  --space-10: 20px;
  --space-12: 24px;
  --space-16: 32px;
  --space-20: 40px;
  --space-24: 48px;
  --space-32: 64px;
  --space-40: 80px;
  --space-48: 96px;

  /* Radius */
  --radius-none: 0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 18px;
  --radius-full: 999px;

  /* Shadows – soft industrial depth */
  --shadow-soft: 0 10px 30px rgba(15, 18, 23, 0.06);
  --shadow-medium: 0 18px 45px rgba(15, 18, 23, 0.12);
  --shadow-hard: 0 22px 60px rgba(15, 18, 23, 0.18);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-base: 200ms ease-out;
  --transition-slow: 320ms ease-out;

  /* Layout */
  --layout-max-width: 1120px;
}

/* Slightly larger type & headings on wider screens */
@media (min-width: 768px) {
  :root {
    --font-size-base: 1.0625rem; /* 17px */
    --font-size-lg: 1.1875rem;   /* 19px */
    --font-size-xl: 1.375rem;    /* 22px */
    --font-size-2xl: 1.75rem;    /* 28px */
    --font-size-3xl: 2.125rem;   /* 34px */
    --font-size-4xl: 2.5rem;     /* 40px */
    --font-size-5xl: 3.25rem;    /* 52px */
  }
}


/* ========================================================================
   Reset / Normalize
   ======================================================================== */

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

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  margin: 0;
}

h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd {
  margin: 0;
}

ul[role='list'],
ol[role='list'] {
  list-style: none;
  margin: 0;
  padding: 0;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

button,
input,
select,
textarea {
  margin: 0;
  font: inherit;
  color: inherit;
}

button {
  border: none;
  background: none;
  padding: 0;
}

fieldset {
  border: 0;
  margin: 0;
  padding: 0;
}

textarea {
  resize: vertical;
}

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

:focus {
  outline: none;
}

[hidden] {
  display: none !important;
}


/* ========================================================================
   Base Styles
   ======================================================================== */

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  background-color: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: var(--line-height-tight);
  letter-spacing: 0.01em;
  color: var(--color-text);
}

h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-12);
}

h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-8);
}

h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-6);
}

h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-4);
}

h5 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-3);
}

h6 {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

p {
  margin-bottom: var(--space-6);
  color: var(--color-text-muted);
}

strong {
  font-weight: 600;
}

small {
  font-size: var(--font-size-sm);
}

code,
pre {
  font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

/* Links – minimalist with subtle underline on hover */

a {
  position: relative;
  color: var(--color-text);
  transition: color var(--transition-base);
}

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

a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: currentColor;
  opacity: 0;
  transform: scaleX(0.85);
  transform-origin: left;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
}

a:hover::after {
  opacity: 0.7;
  transform: scaleX(1);
}

hr {
  border: none;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-16) 0;
}


/* ========================================================================
   Accessibility & Motion
   ======================================================================== */

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}


/* ========================================================================
   Utilities
   ======================================================================== */

/* Layout Container */

.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-8);
  padding-right: var(--space-8);
  max-width: var(--layout-max-width);
}

@media (min-width: 1024px) {
  .container {
    padding-left: var(--space-12);
    padding-right: var(--space-12);
  }
}

/* Flex helpers */

.flex {
  display: flex;
}

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

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.flex-wrap {
  flex-wrap: wrap;
}

/* Grid helpers – for masonry-like layouts and galleries */

.grid {
  display: grid;
  gap: var(--space-8);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-8);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-8);
}

@media (max-width: 767.98px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Spacing utilities (minimal set for layout tweaks) */

.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mt-8 { margin-top: var(--space-8) !important; }
.mb-8 { margin-bottom: var(--space-8) !important; }
.mt-16 { margin-top: var(--space-16) !important; }
.mb-16 { margin-bottom: var(--space-16) !important; }

.pt-16 { padding-top: var(--space-16) !important; }
.pb-16 { padding-bottom: var(--space-16) !important; }
.pt-24 { padding-top: var(--space-24) !important; }
.pb-24 { padding-bottom: var(--space-24) !important; }

/* Screen-reader only */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Sticky CTA helper (e.g. "Nezávazná poptávka") */

.sticky-cta {
  position: fixed;
  right: var(--space-8);
  bottom: var(--space-8);
  z-index: 50;
}

@media (min-width: 768px) {
  .sticky-cta {
    right: var(--space-16);
    bottom: var(--space-16);
  }
}


/* ========================================================================
   Components
   ======================================================================== */

/* Buttons – minimalist, loft style */

.button,
button,
input[type="submit"],
input[type="button"],
input[type="reset"] {
  --btn-bg: var(--color-text);
  --btn-color: #ffffff;
  --btn-border: transparent;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: 0.7rem 1.4rem;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  border: 1px solid var(--btn-border);
  background-color: var(--btn-bg);
  color: var(--btn-color);
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.button-primary {
  --btn-bg: var(--color-primary);
  --btn-border: var(--color-primary);
}

.button-outline {
  --btn-bg: transparent;
  --btn-color: var(--color-text);
  --btn-border: var(--color-border-strong);
  box-shadow: none;
}

.button-ghost {
  --btn-bg: rgba(255, 255, 255, 0.02);
  --btn-color: var(--color-text);
  --btn-border: rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(8px);
}

.button:hover,
button:hover,
input[type="submit"]:hover,
input[type="button"]:hover,
input[type="reset"]:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.18);
}

.button:active,
button:active,
input[type="submit"]:active,
input[type="button"]:active,
input[type="reset"]:active {
  transform: translateY(0);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18);
}

.button:focus-visible,
button:focus-visible,
input[type="submit"]:focus-visible,
input[type="button"]:focus-visible,
input[type="reset"]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.button[disabled],
button[disabled],
input[type="submit"][disabled],
input[type="button"][disabled],
input[type="reset"][disabled] {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
}

/* Inputs & form controls */

.input,
textarea,
select,
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="password"] {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-bg-elevated);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

.input::placeholder,
textarea::placeholder,
input::placeholder {
  color: var(--gray-400);
}

.input:focus-visible,
textarea:focus-visible,
select:focus-visible,
input[type="text"]:focus-visible,
input[type="email"]:focus-visible,
input[type="tel"]:focus-visible,
input[type="url"]:focus-visible,
input[type="number"]:focus-visible,
input[type="password"]:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary-soft), var(--shadow-soft);
  background-color: #ffffff;
}

input[disabled],
textarea[disabled],
select[disabled] {
  cursor: not-allowed;
  background-color: var(--gray-100);
  color: var(--gray-500);
}

label {
  display: block;
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gray-600);
}

/* Cards – for event blocks, timeline steps, references */

.card {
  position: relative;
  background-color: var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(9, 9, 11, 0.04);
  box-shadow: var(--shadow-soft);
  padding: var(--space-16);
}

.card--muted {
  background: linear-gradient(135deg, var(--gray-50), var(--color-bg-elevated));
}

.card-header {
  margin-bottom: var(--space-8);
}

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

.card-meta {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gray-500);
}

/* Hero / fullscreen sections – base setup for sliders */

.hero-fullscreen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-color: #f2f2f3;
  color: var(--color-text);
}

.hero-overlay {
  position: relative;
}

.hero-overlay::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.9), transparent 60%),
    linear-gradient(to bottom, rgba(15, 18, 23, 0.12), transparent 40%);
  mix-blend-mode: soft-light;
  pointer-events: none;
}

/* Thin divider – black industrial lines */

.divider-thin {
  border: none;
  border-top: 1px solid rgba(0, 0, 0, 0.12);
  margin: var(--space-12) 0;
}

/* Timeline base – for "Jak Probíhá Organizace" */

.timeline {
  position: relative;
  padding-left: var(--space-24);
}

.timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.24), transparent);
}

.timeline-step {
  position: relative;
  margin-bottom: var(--space-16);
}

.timeline-step::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 4px;
  width: 11px;
  height: 11px;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.6);
  background-color: var(--color-bg);
}

/* Statistic counters – for animated stats base styling */

.stat {
  text-align: left;
}

.stat-value {
  font-family: var(--font-display);
  font-size: var(--font-size-3xl);
  font-weight: 600;
}

.stat-label {
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Masonry gallery base */

.gallery-masonry {
  column-count: 2;
  column-gap: var(--space-8);
}

.gallery-masonry-item {
  break-inside: avoid;
  margin-bottom: var(--space-8);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

@media (min-width: 768px) {
  .gallery-masonry {
    column-count: 3;
  }
}

/* Carousel base – for references / testimonials */

.carousel {
  position: relative;
  overflow: hidden;
}

.carousel-track {
  display: flex;
  gap: var(--space-8);
}

.carousel-nav {
  display: flex;
  gap: var(--space-4);
  justify-content: flex-end;
  margin-top: var(--space-8);
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background-color: var(--gray-300);
  border: none;
  padding: 0;
}

.carousel-dot.is-active {
  width: 18px;
  background-color: var(--color-primary);
}

/* Header & navigation base – minimalist loft line */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: rgba(245, 245, 246, 0.9);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-8) 0;
}

.nav {
  display: none;
  gap: var(--space-10);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.nav-link {
  position: relative;
  padding: 0.2rem 0;
  color: var(--gray-700);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background-color: #000000;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.nav-link:hover::after,
.nav-link--active::after {
  transform: scaleX(1);
}

.nav-link--active {
  color: var(--color-text);
}

@media (min-width: 960px) {
  .nav {
    display: flex;
  }
}

/* Footer base */

.site-footer {
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  background: #f2f3f4;
  padding: var(--space-24) 0 var(--space-16);
  font-size: var(--font-size-sm);
}

.site-footer-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-16);
}

@media (min-width: 768px) {
  .site-footer-columns {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.site-footer-disclaimer {
  margin-top: var(--space-16);
  font-size: var(--font-size-xs);
  color: var(--gray-500);
  max-width: 640px;
}