/* =============================================================================
   Spinning a Fitness — Hlavní styly
   BEM metodologie, mobile-first, CSS custom properties
   ============================================================================= */

/* -----------------------------------------------------------------------------
   1. Custom Properties
   ----------------------------------------------------------------------------- */

:root {
  /* Barvy */
  --color-primary: #E53935;
  --color-primary-dark: #C62828;
  --color-primary-light: #EF5350;
  --color-dark: #1A1A1A;
  --color-dark-light: #2D2D2D;
  --color-gray: #757575;
  --color-gray-light: #E0E0E0;
  --color-white: #FFFFFF;
  --color-off-white: #F5F5F5;

  /* Typografie */
  --font-heading: 'Oswald', sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;

  /* Velikosti písma */
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --container-max: 72rem;
  --container-padding: 1rem;
  --header-height: 4rem;

  /* Efekty */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --transition: 0.3s ease;
}

/* -----------------------------------------------------------------------------
   2. Reset & Base
   ----------------------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul,
ol {
  list-style: none;
}

/* -----------------------------------------------------------------------------
   3. Typografie
   ----------------------------------------------------------------------------- */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-dark);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

p {
  margin-bottom: var(--space-md);
}

p:last-child {
  margin-bottom: 0;
}

/* -----------------------------------------------------------------------------
   4. Layout
   ----------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--space-3xl) 0;
}

.section--dark {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--color-white);
}

.section--gray {
  background-color: var(--color-off-white);
}

.section--cta {
  background-color: var(--color-primary);
  color: var(--color-white);
  text-align: center;
}

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

.section__title {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section__subtitle {
  text-align: center;
  color: var(--color-gray);
  font-size: var(--text-lg);
  max-width: 40rem;
  margin: calc(-1 * var(--space-lg)) auto var(--space-2xl);
}

/* Grid */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
.grid--4 { grid-template-columns: 1fr; }

/* -----------------------------------------------------------------------------
   5. Header & Navigace
   ----------------------------------------------------------------------------- */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-dark);
  z-index: 100;
  transition: box-shadow var(--transition);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
}

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

.header__logo {
  display: flex;
  align-items: center;
  z-index: 101;
}

.header__logo img {
  height: 2rem;
  width: auto;
}

/* Navigace — mobilní overlay */
.nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 20rem;
  height: 100vh;
  background-color: var(--color-dark);
  padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
  transition: right var(--transition);
  overflow-y: auto;
  z-index: 99;
}

.nav--open {
  right: 0;
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.nav__link {
  display: block;
  padding: var(--space-sm) 0;
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary);
}

.nav__item--dropdown > .nav__link::after {
  content: "";
  display: inline-block;
  width: 0.4em;
  height: 0.4em;
  margin-left: 0.4em;
  margin-bottom: 0.15em;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform var(--transition);
}

.nav__item--dropdown.is-open > .nav__link::after {
  transform: rotate(-135deg);
  margin-bottom: -0.1em;
}

/* Dropdown */
.nav__item--dropdown {
  position: relative;
}

.nav__dropdown {
  display: none;
  padding-left: var(--space-md);
}

.nav__item--dropdown.is-open .nav__dropdown {
  display: block;
}

.nav__dropdown a {
  display: block;
  padding: var(--space-xs) 0;
  color: var(--color-gray-light);
  font-size: var(--text-base);
  transition: color var(--transition);
}

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

.nav__cta {
  margin-top: var(--space-lg);
  text-align: center;
}

/* Hamburger */
.header__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2rem;
  height: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 101;
  padding: 0;
}

.header__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-white);
  transition: transform var(--transition), opacity var(--transition);
}

.header__hamburger--active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__hamburger--active span:nth-child(2) {
  opacity: 0;
}

.header__hamburger--active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Overlay pozadí */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 98;
}

.nav-overlay--visible {
  display: block;
}

/* Offset pro fixed header */
main {
  padding-top: var(--header-height);
}

/* -----------------------------------------------------------------------------
   6. Footer
   ----------------------------------------------------------------------------- */

.footer {
  background-color: var(--color-dark);
  color: var(--color-gray-light);
  padding: var(--space-3xl) 0 var(--space-xl);
}

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

.footer__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  color: var(--color-white);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.footer__text {
  font-size: var(--text-sm);
  line-height: 1.8;
}

.footer__link {
  color: var(--color-gray-light);
  transition: color var(--transition);
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__bottom {
  border-top: 1px solid var(--color-dark-light);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-gray);
}

/* -----------------------------------------------------------------------------
   7. Hero
   ----------------------------------------------------------------------------- */

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 80vh;
  background-color: var(--color-dark);
  background-size: cover;
  background-position: center;
  color: var(--color-white);
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.4) 100%);
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero__title {
  font-size: var(--text-4xl);
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-gray-light);
  margin-bottom: var(--space-xl);
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

.hero--page {
  min-height: 40vh;
}

.hero--page .hero__title {
  font-size: var(--text-3xl);
}

/* -----------------------------------------------------------------------------
   8. Tlačítka
   ----------------------------------------------------------------------------- */

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-xl);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: center;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

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

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

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

.btn--secondary:hover {
  background-color: var(--color-off-white);
  border-color: var(--color-off-white);
  color: var(--color-dark);
}

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

.btn--outline:hover {
  background-color: var(--color-white);
  color: var(--color-dark);
}

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

.btn--outline-dark:hover {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.btn--lg {
  padding: var(--space-md) var(--space-2xl);
  font-size: var(--text-lg);
}

/* -----------------------------------------------------------------------------
   9. Karty
   ----------------------------------------------------------------------------- */

/* Karta služby */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.card__img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background-color: var(--color-gray-light);
}

.card__body {
  padding: var(--space-lg);
}

.card__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
}

.card__text {
  color: var(--color-gray);
  font-size: var(--text-sm);
  margin-bottom: var(--space-md);
}

.card__link {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  font-weight: 500;
}

.card__link:hover {
  color: var(--color-primary-dark);
}

/* Seznam "O nás" na homepage */
.about-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.about-list__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.about-list__marker {
  flex-shrink: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  line-height: 1.2;
  min-width: 2.5rem;
}

.about-list__text {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-gray-light);
}

.about-list__text strong {
  color: var(--color-white);
  font-weight: 600;
}

/* Karty typů sálových lekcí */
.lesson-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: var(--space-lg);
}

.lesson-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-primary);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.lesson-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: var(--space-xs);
}

.lesson-card__instructor {
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.lesson-card__desc {
  color: var(--color-gray);
  font-size: var(--text-sm);
  margin: 0;
}

/* Karta trenéra */
.trainer-card {
  text-align: center;
}

.trainer-card__img {
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  object-fit: cover;
  object-position: top;
  margin: 0 auto var(--space-md);
  background-color: var(--color-gray-light);
}

.trainer-card__img--placeholder,
.team-detail__img--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-gray-light), #d1d5db);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 2.25rem;
  letter-spacing: 0.05em;
}

.team-detail__img--placeholder {
  font-size: 1.75rem;
}

.trainer-card__name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
}

.trainer-card__role {
  color: var(--color-gray);
  font-size: var(--text-sm);
}

/* Karta reference */
.review-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.review-card__text {
  font-style: italic;
  color: var(--color-gray);
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.review-card__text::before {
  content: '„';
  font-size: var(--text-2xl);
  color: var(--color-primary);
  font-style: normal;
}

.review-card__text::after {
  content: '"';
  font-size: var(--text-2xl);
  color: var(--color-primary);
  font-style: normal;
}

.review-card__author {
  font-family: var(--font-heading);
  font-weight: 500;
  text-transform: uppercase;
}

.review-card__service {
  font-size: var(--text-sm);
  color: var(--color-gray);
}

/* -----------------------------------------------------------------------------
   10. Instagram Grid
   ----------------------------------------------------------------------------- */

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

.ig-grid__item {
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: var(--radius-sm);
}

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

.ig-grid__item:hover .ig-grid__img {
  transform: scale(1.05);
}

/* -----------------------------------------------------------------------------
   11. Service Badge
   ----------------------------------------------------------------------------- */

.badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-sm);
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
  color: var(--color-white);
  transition: background-color var(--transition), color var(--transition);
}

a.badge:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

/* -----------------------------------------------------------------------------
   12. Stránka služby
   ----------------------------------------------------------------------------- */

.service-detail {
  max-width: 48rem;
}

.service-detail p {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-gray);
}

.service-trainers {
  margin-top: var(--space-2xl);
}

.service-trainers__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-lg);
}

/* -----------------------------------------------------------------------------
   13. Stránka týmu
   ----------------------------------------------------------------------------- */

.team-detail {
  background-color: var(--color-off-white);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
  scroll-margin-top: calc(var(--header-height) + var(--space-lg));
  color: var(--color-dark);
}

.team-detail h3,
.team-detail h4 {
  color: var(--color-dark);
}

.team-detail .trainer-card__role {
  color: var(--color-gray);
}

.team-detail__header {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.team-detail__img {
  width: 8rem;
  height: 8rem;
  border-radius: 50%;
  object-fit: cover;
  object-position: top;
  flex-shrink: 0;
  background-color: var(--color-gray-light);
}

.team-detail__name {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-xs);
  color: var(--color-dark);
}

.team-detail__bio {
  color: var(--color-gray);
  line-height: 1.8;
}

.team-detail__bio p + p {
  margin-top: var(--space-md);
}

.team-detail__bio--collapsible {
  position: relative;
  max-height: 8.5rem;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.team-detail__bio--collapsible::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3rem;
  background: linear-gradient(to bottom, transparent, var(--color-off-white));
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.team-detail__bio--expanded {
  max-height: 200rem;
}

.team-detail__bio--expanded::after {
  opacity: 0;
}

.team-detail__toggle {
  margin-top: var(--space-md);
  background: none;
  border: none;
  padding: 0;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  font-weight: 500;
  cursor: pointer;
}

.team-detail__toggle:hover {
  color: var(--color-primary-dark);
}

.team-detail__services {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

/* -----------------------------------------------------------------------------
   14. Stránka ceníku
   ----------------------------------------------------------------------------- */

.pricing-group {
  margin-bottom: var(--space-2xl);
}

.pricing-group__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-primary);
}

.pricing-group__subtitle {
  font-size: var(--text-sm);
  color: var(--color-gray);
  margin-bottom: var(--space-lg);
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.pricing-table th,
.pricing-table td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-gray-light);
  vertical-align: middle;
}

.pricing-table th:first-child,
.pricing-table td:first-child {
  width: 65%;
}

.pricing-table th:last-child,
.pricing-table td:last-child {
  width: 35%;
  text-align: right;
}

.pricing-table th {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  text-transform: uppercase;
  color: var(--color-gray);
  font-weight: 500;
}

.pricing-table__price {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
}

.pricing-group__notes {
  font-size: var(--text-sm);
  color: var(--color-gray);
  margin-top: var(--space-sm);
  font-style: italic;
}

/* Pricing karty (mobilní alternativa) */
.pricing-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.pricing-card__name {
  font-weight: 500;
}

.pricing-card__price {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-primary);
}

/* -----------------------------------------------------------------------------
   15. Kontaktní stránka
   ----------------------------------------------------------------------------- */

.contact-grid {
  display: grid;
  gap: var(--space-2xl);
}

.form__group {
  margin-bottom: var(--space-lg);
}

.form__label {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
  color: var(--color-dark);
}

.form__input,
.form__textarea,
.form__select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-body);
  font-size: var(--text-base);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-sm);
  background-color: var(--color-white);
  transition: border-color var(--transition);
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  outline: none;
  border-color: var(--color-primary);
}

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

.form__checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--color-gray);
}

.form__checkbox input {
  margin-top: 0.25em;
  flex-shrink: 0;
}

.form__error {
  color: var(--color-primary);
  font-size: var(--text-sm);
  margin-top: var(--space-xs);
  display: none;
}

.form__group--error .form__input,
.form__group--error .form__textarea,
.form__group--error .form__select {
  border-color: var(--color-primary);
}

.form__group--error .form__error {
  display: block;
}

.form__success {
  background-color: #4CAF50;
  color: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  text-align: center;
  display: none;
}

.form__success--visible {
  display: block;
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-info__label {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  text-transform: uppercase;
  color: var(--color-gray);
  margin-bottom: var(--space-xs);
}

.contact-map {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: none;
  border-radius: var(--radius-md);
}

/* Formulářové zprávy (AJAX success/error) */
.form-message {
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.form-message--success {
  background-color: #E8F5E9;
  color: #2E7D32;
  border: 1px solid #A5D6A7;
}

.form-message--error {
  background-color: #FFEBEE;
  color: #C62828;
  border: 1px solid #EF9A9A;
}

/* Disabled stav tlačítka */
.btn[disabled] {
  opacity: 0.7;
  cursor: not-allowed;
}

/* -----------------------------------------------------------------------------
   16. Reference stránka
   ----------------------------------------------------------------------------- */

.review-full {
  display: grid;
  gap: var(--space-xl);
  align-items: center;
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--color-gray-light);
}

.review-full__img {
  width: 8rem;
  height: 8rem;
  border-radius: 50%;
  object-fit: cover;
  background-color: var(--color-gray-light);
}

.review-full__text {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-gray);
  font-style: italic;
}

.review-full__author {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  text-transform: uppercase;
  margin-top: var(--space-md);
}

.review-full__services {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

/* -----------------------------------------------------------------------------
   17. 404 stránka
   ----------------------------------------------------------------------------- */

.error-page {
  text-align: center;
  padding: var(--space-4xl) 0;
}

.error-page__code {
  font-family: var(--font-heading);
  font-size: 8rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.error-page__title {
  font-size: var(--text-3xl);
  margin: var(--space-md) 0;
}

.error-page__text {
  color: var(--color-gray);
  margin-bottom: var(--space-xl);
}

/* -----------------------------------------------------------------------------
   18. Media Queries
   ----------------------------------------------------------------------------- */

/* Tablet (768px) */
@media (min-width: 48rem) {
  :root {
    --container-padding: 2rem;
    --header-height: 5rem;
  }

  h1 { font-size: var(--text-5xl); }
  h2 { font-size: var(--text-4xl); }

  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }

  .hero__title {
    font-size: var(--text-5xl);
  }

  .ig-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .review-full {
    grid-template-columns: auto 1fr;
  }

  .team-detail__img {
    width: 10rem;
    height: 10rem;
  }
}

/* Desktop (1024px) */
@media (min-width: 64rem) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }

  /* Desktop navigace */
  .nav {
    position: static;
    width: auto;
    max-width: none;
    height: auto;
    background-color: transparent;
    padding: 0;
    overflow: visible;
    display: flex;
    align-items: center;
    gap: var(--space-lg);
  }

  .nav__list {
    flex-direction: row;
    gap: 0;
  }

  .nav__link {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
  }

  /* Desktop dropdown */
  .nav__item--dropdown {
    position: relative;
  }

  .nav__dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--color-dark-light);
    border-radius: var(--radius-sm);
    padding: var(--space-sm) 0;
    min-width: 14rem;
    box-shadow: var(--shadow-md);
    z-index: 100;
  }

  .nav__item--dropdown:hover .nav__dropdown,
  .nav__item--dropdown.is-open .nav__dropdown {
    display: block;
  }

  .nav__item--dropdown:hover > .nav__link::after {
    transform: rotate(-135deg);
    margin-bottom: -0.1em;
  }

  .nav__dropdown a {
    padding: var(--space-sm) var(--space-lg);
    white-space: nowrap;
  }

  .header__hamburger {
    display: none;
  }

  .nav-overlay {
    display: none !important;
  }

  .nav__cta {
    margin-top: 0;
  }

  .ig-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Velký desktop (1280px) */
@media (min-width: 80rem) {
  :root {
    --text-5xl: 4rem;
  }
}