/* ========================================================================== 
   Variables
   ========================================================================== */
:root {
  /* Colors */
  --color-background: #ffffff;
  --color-surface: rgba(255, 255, 255, 0.9);
  --color-surface-elevated: rgba(255, 255, 255, 0.8);
  --color-text: #141927;
  --color-text-soft: #5c6474;
  --color-primary: #30c9d9; /* turquoise */
  --color-primary-soft: #e0f8fb;
  --color-accent-blue: #8bbcff; /* light blue */
  --color-accent-lilac: #c8b5ff; /* lavender */
  --color-accent-pink: #ffb6d9; /* light pink */
  --color-accent-yellow: #ffeaa3; /* soft yellow */

  --color-success: #1fbf75;
  --color-warning: #f6a623;
  --color-danger: #ff4b6a;

  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2933;
  --gray-900: #111827;

  /* Gradients */
  --gradient-rainbow-soft: linear-gradient(135deg,
    rgba(48, 201, 217, 0.9),
    rgba(139, 188, 255, 0.9),
    rgba(200, 181, 255, 0.9),
    rgba(255, 182, 217, 0.9),
    rgba(255, 234, 163, 0.9)
  );

  --gradient-hero: radial-gradient(circle at top left,
      rgba(48, 201, 217, 0.18) 0,
      transparent 55%),
    radial-gradient(circle at top right,
      rgba(200, 181, 255, 0.20) 0,
      transparent 55%),
    radial-gradient(circle at bottom left,
      rgba(255, 182, 217, 0.22) 0,
      transparent 60%);

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", sans-serif;
  --font-display: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-md: 1.0625rem; /* 17px */
  --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: 1.6;
  --line-height-relaxed: 1.8;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-7: 1.75rem;  /* 28px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* Radius */
  --radius-sm: 0.5rem;      /* 8px */
  --radius-md: 0.75rem;     /* 12px */
  --radius-lg: 1.25rem;     /* 20px */
  --radius-xl: 2rem;        /* 32px */
  --radius-pill: 999px;

  /* Shadows */
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.08);
  --shadow-soft-lg: 0 24px 60px rgba(15, 23, 42, 0.10);
  --shadow-subtle: 0 10px 30px rgba(15, 23, 42, 0.06);

  /* Glassmorphism */
  --glass-background: rgba(255, 255, 255, 0.18);
  --glass-border: 1px solid rgba(255, 255, 255, 0.6);
  --glass-blur: 18px;

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-base: 190ms ease-out;
  --transition-slow: 260ms ease-out;
}

/* ========================================================================== 
   Reset / Normalize
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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;
  padding-left: 0;
  margin: 0;
}

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

input, button, textarea, select {
  font: inherit;
}

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

textarea {
  resize: vertical;
}

:focus {
  outline: none;
}

/* Remove default link underlines / colors to better control them */
a {
  color: inherit;
  text-decoration: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* ========================================================================== 
   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-background);
  background-image: var(--gradient-hero);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  display: block;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--gray-900);
}

h1 {
  font-size: clamp(2.1rem, 4vw, 3.1rem);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.6rem);
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-2);
}

h4 {
  font-size: 1.125rem;
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-3);
  color: var(--color-text-soft);
}

p.lead {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--gray-800);
}

strong, b {
  font-weight: 600;
}

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

code, pre {
  font-family: var(--font-mono);
}

pre {
  margin: 0;
}

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

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

/* Underline style only on hover for nav / text links */
a.link-underline,
nav a {
  text-decoration: none;
}

a.link-underline::after,
nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.15em;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg,
    var(--color-primary),
    var(--color-accent-lilac),
    var(--color-accent-pink)
  );
  transition: width var(--transition-base);
}

a.link-underline:hover::after,
nav a:hover::after {
  width: 100%;
}

/* Lists */
ul, ol {
  margin: 0 0 var(--space-3) var(--space-5);
  padding: 0;
}

/* ========================================================================== 
   Accessibility & Motion
   ========================================================================== */
:focus-visible {
  outline: 2px solid transparent;
  outline-offset: 2px;
  box-shadow:
    0 0 0 2px #ffffff,
    0 0 0 4px rgba(48, 201, 217, 0.9);
  border-radius: 0.4rem;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========================================================================== 
   Layout Utilities
   ========================================================================== */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  max-width: 1120px;
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

.section {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.section--tight {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

.section__header {
  margin-bottom: var(--space-6);
}

.section__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.15rem 0.7rem;
  border-radius: var(--radius-pill);
  background: rgba(48, 201, 217, 0.08);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Flex utilities */
.flex {
  display: flex;
}

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

.flex-row {
  flex-direction: row;
}

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

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-around {
  justify-content: space-around;
}

.gap-2 {
  gap: var(--space-2);
}

.gap-3 {
  gap: var(--space-3);
}

.gap-4 {
  gap: var(--space-4);
}

.gap-6 {
  gap: var(--space-6);
}

/* Grid utilities */
.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Alignment & spacing helpers */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.pt-0 { padding-top: 0; }
.pb-0 { padding-bottom: 0; }

.w-full {
  width: 100%;
}

.hidden {
  display: none !important;
}

@media (min-width: 768px) {
  .md\:flex {
    display: flex;
  }
}

/* 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;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-pill);
  border: none;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.btn--primary {
  color: #0b1220;
  background-image: linear-gradient(135deg,
    var(--color-primary),
    var(--color-accent-blue),
    var(--color-accent-lilac)
  );
  box-shadow: var(--shadow-soft);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft-lg);
}

.btn--outline {
  background: rgba(255, 255, 255, 0.5);
  color: var(--gray-800);
  border: 1px solid rgba(139, 188, 255, 0.6);
  box-shadow: var(--shadow-subtle);
  backdrop-filter: blur(10px);
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.8);
}

.btn--ghost {
  background: transparent;
  color: var(--gray-800);
}

.btn:disabled,
.btn[aria-disabled='true'] {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn--icon-only {
  padding-inline: 0.75rem;
}

/* Inputs & Form Controls */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-800);
}

.input,
.textarea,
.select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: 0.9rem;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(255, 255, 255, 0.85);
  color: var(--gray-900);
  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),
    transform var(--transition-fast);
  box-shadow: 0 15px 30px rgba(15, 23, 42, 0.03);
}

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

.input:focus-visible,
.textarea:focus-visible,
.select:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  border-color: rgba(48, 201, 217, 0.9);
  box-shadow:
    0 0 0 1px rgba(48, 201, 217, 0.5),
    0 18px 35px rgba(15, 23, 42, 0.10);
  background: #ffffff;
}

.textarea {
  min-height: 8rem;
  resize: vertical;
}

.input[aria-invalid='true'],
.textarea[aria-invalid='true'],
.select[aria-invalid='true'] {
  border-color: rgba(255, 75, 106, 0.7);
}

.field__error {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

/* Cards (Glassmorphism) */
.card {
  position: relative;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  background: linear-gradient(135deg,
      rgba(255, 255, 255, 0.88),
      rgba(255, 255, 255, 0.9)
    );
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255, 255, 255, 0.9);
  overflow: hidden;
}

.card--glass {
  background: var(--glass-background);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: var(--glass-border);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.16);
}

.card--soft {
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-subtle);
}

.card__badge {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left,
      rgba(48, 201, 217, 0.12) 0,
      transparent 55%),
    radial-gradient(circle at bottom right,
      rgba(255, 182, 217, 0.18) 0,
      transparent 60%);
  opacity: 0.7;
  pointer-events: none;
}

.card__content {
  position: relative;
}

/* Hero full-height helper */
.hero-full {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.hero-full__inner {
  flex: 1;
  display: flex;
  align-items: center;
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

/* Slider layout basics (for JS to enhance) */
.slider {
  position: relative;
  overflow: hidden;
}

.slider__track {
  display: flex;
  transition: transform 380ms ease-out;
}

.slider__slide {
  min-width: 100%;
  padding: var(--space-8) 0;
}

.slider__dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: var(--space-4);
}

.slider__dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.4);
  border: none;
  padding: 0;
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    width var(--transition-base),
    transform var(--transition-fast);
}

.slider__dot--active {
  width: 20px;
  background: var(--color-primary);
  transform: translateY(-1px);
}

/* Sticky CTA button (e.g., "Nezávazná poptávka") */
.sticky-cta {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 40;
}

@media (min-width: 768px) {
  .sticky-cta {
    right: 1.8rem;
    bottom: 1.8rem;
  }
}

.sticky-cta__button {
  box-shadow: 0 22px 45px rgba(15, 23, 42, 0.22);
}

/* Stats cards (for homepage stats section) */
.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.stat {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-subtle);
}

.stat__value {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--gray-900);
}

.stat__label {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Timeline ("Jak Organizujeme Akce") */
.timeline {
  position: relative;
  display: grid;
  gap: var(--space-4);
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.65rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(to bottom,
    var(--color-primary),
    var(--color-accent-pink),
    var(--color-accent-yellow)
  );
  opacity: 0.65;
}

.timeline__item {
  position: relative;
  padding-left: 2.5rem;
}

.timeline__dot {
  position: absolute;
  left: 0;
  top: 0.4rem;
  width: 1.3rem;
  height: 1.3rem;
  border-radius: 999px;
  background: #ffffff;
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.24);
  border: 3px solid rgba(48, 201, 217, 0.95);
}

.timeline__title {
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.timeline__meta {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-500);
  margin-bottom: 0.2rem;
}

/* Masonry-like gallery base (column layout) */
.gallery-masonry {
  column-count: 2;
  column-gap: var(--space-3);
}

@media (min-width: 768px) {
  .gallery-masonry {
    column-count: 3;
    column-gap: var(--space-4);
  }
}

.gallery-masonry__item {
  break-inside: avoid;
  margin-bottom: var(--space-3);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
}

/* Avatar / quote carousel base (Reference) */
.testimonials {
  position: relative;
}

.testimonial-card {
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-soft);
  padding: var(--space-5);
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.testimonial-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 999px;
  overflow: hidden;
}

/* Tag / chip (for event types, SEO terms, etc.) */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.7rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(148, 163, 184, 0.6);
  font-size: var(--font-size-xs);
  color: var(--gray-700);
}

/* Header & Footer base layout (non-opinionated) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: linear-gradient(to bottom,
    rgba(255, 255, 255, 0.9),
    rgba(255, 255, 255, 0.78),
    rgba(255, 255, 255, 0.4)
  );
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
}

.site-nav {
  display: none;
  align-items: center;
  gap: 1.4rem;
  font-size: var(--font-size-sm);
}

@media (min-width: 900px) {
  .site-nav {
    display: flex;
  }
}

.site-footer {
  padding-top: var(--space-8);
  padding-bottom: var(--space-6);
  background: linear-gradient(135deg,
    rgba(248, 250, 252, 0.98),
    rgba(255, 255, 255, 0.98)
  );
  border-top: 1px solid rgba(226, 232, 240, 0.9);
}

.site-footer__columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

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

.site-footer__legal {
  margin-top: var(--space-6);
  font-size: var(--font-size-xs);
  color: var(--gray-500);
  line-height: 1.5;
}

/* Instagram-style gallery base */
.ig-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2px;
}

.ig-grid__item {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

.ig-grid__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.ig-grid__item:hover img {
  transform: scale(1.04);
}

/* Animated service icons (subtle float) */
.icon-float {
  animation: icon-float 3.5s ease-in-out infinite;
}

@keyframes icon-float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-4px);
  }
}

/* Pastel gradient pill background helper */
.pill-gradient {
  display: inline-flex;
  align-items: center;
  padding: 0.22rem 0.8rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--gradient-rainbow-soft);
  color: #0b1220;
}