/* ═══════════════════════════════════════════
   DESIGN TOKENS — CSS Custom Properties
═══════════════════════════════════════════ */
:root {
  --color-bg:       #1b1b1b;
  --color-bg-dark:  #141414;
  --color-bg-foot:  #0f0f0f;
  --color-gold:     #d4af37;
  --color-gold-hov: #b8960f;
  --color-text:     #ffffff;
  --color-muted:    #a0a0a0;
  --color-overlay:  rgba(0, 0, 0, 0.45);
  --color-error:    #ef4444;
  --color-success:  #22c55e;

  --font-display:   'Playfair Display', Georgia, serif;
  --font-body:      'Lora', Georgia, serif;
  --font-ui:        'Lato', system-ui, sans-serif;

  --section-padding: clamp(60px, 8vw, 120px);
  --container-max:   1200px;
  --nav-height:      70px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 200ms ease;
  --transition-med:  400ms ease;
}

/* ═══════════════════════════════════════════
   RESET & BASE
═══════════════════════════════════════════ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

address {
  font-style: normal;
}

/* Accessibility: skip link */
.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;
}

/* ═══════════════════════════════════════════
   CONTAINER
═══════════════════════════════════════════ */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 48px);
}

/* ═══════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════ */
.btn {
  display: inline-block;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 14px 32px;
  border-radius: 3px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast),
              color var(--transition-fast),
              border-color var(--transition-fast),
              transform var(--transition-fast);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

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

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

.btn--primary:hover {
  background-color: var(--color-gold-hov);
  border-color: var(--color-gold-hov);
  color: var(--color-bg);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-gold);
  border-color: var(--color-gold);
}

.btn--secondary:hover {
  background-color: rgba(212, 175, 55, 0.12);
  color: var(--color-gold);
}

.btn--sm {
  padding: 10px 22px;
  font-size: 13px;
}

/* ═══════════════════════════════════════════
   SCROLL REVEAL ANIMATIONS
═══════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 600ms var(--ease-out),
              transform 600ms var(--ease-out);
  transition-delay: var(--delay, 0s);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════
   NAVIGACE
═══════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition: background-color 300ms ease, border-color 300ms ease, backdrop-filter 300ms ease;
}

.nav.scrolled {
  background-color: rgba(27, 27, 27, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.nav__container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 48px);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  color: var(--color-gold);
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.nav__logo:hover {
  color: var(--color-gold-hov);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav__link {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-gold);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}

.nav__hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--transition-fast),
              opacity var(--transition-fast),
              background-color var(--transition-fast);
}

.nav__hamburger.is-open .nav__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background-color: var(--color-gold);
}

.nav__hamburger.is-open .nav__hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__hamburger.is-open .nav__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background-color: var(--color-gold);
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav__hamburger {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: rgba(20, 20, 20, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 400ms var(--ease-out), opacity 400ms ease;
    opacity: 0;
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
  }

  .nav__menu.is-open {
    max-height: 320px;
    opacity: 1;
  }

  .nav__link {
    display: block;
    padding: 18px 24px;
    font-size: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--color-text);
  }

  .nav__link:last-child {
    border-bottom: none;
  }
}

/* ═══════════════════════════════════════════
   HERO SEKCE
═══════════════════════════════════════════ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/pozadi.jpeg');
  background-size: cover;
  background-position: center;
  background-color: #1b1b1b;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.45) 0%,
    rgba(0, 0, 0, 0.60) 50%,
    rgba(0, 0, 0, 0.80) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding-inline: clamp(20px, 5vw, 60px);
  max-width: 900px;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(48px, 8vw, 72px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: 24px;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 800ms var(--ease-out) 300ms forwards;
}

.hero__tagline {
  font-family: var(--font-ui);
  font-weight: 300;
  font-style: italic;
  font-size: clamp(18px, 3vw, 24px);
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 800ms var(--ease-out) 600ms forwards;
}

.hero__cta {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 800ms var(--ease-out) 900ms forwards;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255, 255, 255, 0.5);
  animation: heroFadeIn 800ms ease 1400ms forwards, scrollBounce 2s ease-in-out 2200ms infinite;
  opacity: 0;
  transition: color var(--transition-fast);
}

.hero__scroll:hover {
  color: var(--color-gold);
}

@keyframes heroFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ═══════════════════════════════════════════
   MANIFEST
═══════════════════════════════════════════ */
.manifest {
  background-color: var(--color-bg);
  padding-block: var(--section-padding);
  border-top: 1px solid rgba(212, 175, 55, 0.12);
}

.manifest__inner {
  text-align: center;
  max-width: 820px;
  margin-inline: auto;
}

.manifest__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 4vw, 36px);
  color: var(--color-text);
  margin-bottom: 32px;
  letter-spacing: 0.01em;
}

.manifest__text {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: clamp(17px, 2.5vw, 20px);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: 64px;
}

.manifest__icons {
  display: flex;
  justify-content: center;
  gap: clamp(32px, 6vw, 80px);
  flex-wrap: wrap;
}

.manifest__icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  max-width: 180px;
}

.manifest__icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: 50%;
  transition: border-color var(--transition-med);
}

.manifest__icon-item:hover .manifest__icon-wrap {
  border-color: var(--color-gold);
}

.manifest__icon-label {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold);
  text-align: center;
  line-height: 1.4;
}

/* ═══════════════════════════════════════════
   GALERIE — SPOLEČNÉ STYLY
═══════════════════════════════════════════ */
.gallery {
  padding-block: var(--section-padding);
}

.gallery--exclusive {
  background-color: var(--color-bg);
  border-top: 1px solid rgba(212, 175, 55, 0.12);
}

.gallery--design {
  background-color: var(--color-bg-dark);
}

.gallery__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 3.5vw, 32px);
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: 0.01em;
}

.gallery__subtitle {
  font-family: var(--font-ui);
  font-weight: 300;
  font-style: italic;
  font-size: clamp(15px, 2vw, 17px);
  color: var(--color-muted);
  margin-bottom: 56px;
}

/* Grid */
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

/* Horizontal scroll na mobilu */
@media (max-width: 768px) {
  .gallery__grid--scroll {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 20px;
    padding-bottom: 16px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--color-gold) rgba(255,255,255,0.05);
  }

  .gallery__grid--scroll .card {
    min-width: min(80vw, 320px);
    scroll-snap-align: start;
    flex-shrink: 0;
  }
}

@media (max-width: 1024px) and (min-width: 769px) {
  .gallery__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ═══════════════════════════════════════════
   KARTY
═══════════════════════════════════════════ */
.card {
  display: flex;
  flex-direction: column;
  background-color: transparent;
}

.card__img-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
  aspect-ratio: 4 / 5;
  margin-bottom: 20px;
}

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

/* Placeholder obrázky */
.card__img--placeholder {
  background: linear-gradient(135deg, var(--ph-color1, #1a1a1a), var(--ph-color2, #2a2a2a));
  display: flex;
  align-items: center;
  justify-content: center;
}

.card__placeholder-label {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 14px;
  color: rgba(212, 175, 55, 0.5);
  letter-spacing: 0.05em;
  text-align: center;
  padding: 12px;
}

.card__img-wrap:hover .card__img,
.card__img-wrap:focus-within .card__img {
  transform: scale(1.05);
}

/* Badge */
.card__badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background-color: rgba(212, 175, 55, 0.92);
  color: var(--color-bg);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 2px;
}

/* Overlay na hover */
.card__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.card__img-wrap:hover .card__overlay,
.card__img-wrap:focus-within .card__overlay {
  opacity: 1;
}

/* Card body */
.card__body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-grow: 1;
}

.card__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  color: var(--color-text);
  line-height: 1.3;
}

.card__meta {
  font-family: var(--font-ui);
  font-weight: 300;
  font-style: italic;
  font-size: 14px;
  color: var(--color-muted);
}

.card__price {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 22px;
  color: var(--color-gold);
  margin-bottom: 4px;
}

.card__body .btn {
  align-self: flex-start;
  margin-top: 4px;
  font-size: 13px;
  padding: 11px 24px;
}

/* ═══════════════════════════════════════════
   SBĚRATELSKÝ KLUB
═══════════════════════════════════════════ */
.club {
  background-color: var(--color-bg);
  padding-block: var(--section-padding);
  border-top: 2px solid var(--color-gold);
  border-bottom: 2px solid var(--color-gold);
}

.club__inner {
  text-align: center;
  max-width: 620px;
  margin-inline: auto;
}

.club__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 3.5vw, 32px);
  color: var(--color-text);
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}

.club__text {
  font-family: var(--font-ui);
  font-weight: 300;
  font-style: italic;
  font-size: clamp(16px, 2.2vw, 18px);
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 40px;
  line-height: 1.6;
}

.club__form-group {
  display: flex;
  gap: 0;
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: 16px;
}

.club__input {
  flex: 1;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-right: none;
  color: var(--color-text);
  font-family: var(--font-ui);
  font-size: 16px;
  padding: 14px 20px;
  border-radius: 3px 0 0 3px;
  outline: none;
  transition: border-color var(--transition-fast);
}

.club__input::placeholder {
  color: var(--color-muted);
}

.club__input:focus {
  border-color: var(--color-gold);
  background-color: rgba(255, 255, 255, 0.08);
}

.club__btn {
  border-radius: 0 3px 3px 0;
  white-space: nowrap;
  flex-shrink: 0;
}

.club__msg {
  font-family: var(--font-ui);
  font-size: 14px;
  min-height: 20px;
  margin-bottom: 12px;
  transition: color var(--transition-fast);
}

.club__msg--success {
  color: var(--color-success);
}

.club__msg--error {
  color: var(--color-error);
}

.club__privacy {
  font-family: var(--font-ui);
  font-size: 13px;
  color: rgba(160, 160, 160, 0.6);
  letter-spacing: 0.05em;
}

@media (max-width: 480px) {
  .club__form-group {
    flex-direction: column;
    gap: 12px;
  }

  .club__input {
    border-right: 1px solid rgba(212, 175, 55, 0.4);
    border-radius: 3px;
  }

  .club__btn {
    border-radius: 3px;
    width: 100%;
    text-align: center;
  }
}

/* ═══════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════ */
.footer {
  background-color: var(--color-bg-foot);
  padding-top: clamp(48px, 6vw, 80px);
  padding-bottom: 32px;
  border-top: 1px solid rgba(212, 175, 55, 0.12);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  margin-bottom: 56px;
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.footer__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  color: var(--color-gold);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.footer__bio {
  font-family: var(--font-body);
  font-size: 15px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.7;
  margin-bottom: 24px;
}

.footer__social {
  display: flex;
  gap: 16px;
}

.footer__social-link {
  color: var(--color-muted);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  align-items: center;
}

.footer__social-link:hover {
  color: var(--color-gold);
  transform: translateY(-2px);
}

.footer__heading {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 20px;
}

.footer__nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__nav-link {
  font-family: var(--font-ui);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--transition-fast);
}

.footer__nav-link:hover {
  color: var(--color-gold);
}

.footer__address {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}

.footer__contact-link {
  font-family: var(--font-ui);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--transition-fast);
}

.footer__contact-link:hover {
  color: var(--color-gold);
}

.footer__note {
  font-family: var(--font-body);
  font-size: 13px;
  color: rgba(160, 160, 160, 0.55);
  line-height: 1.6;
}

/* Footer bottom bar */
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  flex-wrap: wrap;
}

.footer__copy {
  font-family: var(--font-ui);
  font-size: 13px;
  color: rgba(160, 160, 160, 0.5);
}

.footer__back-top {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  transition: color var(--transition-fast);
}

.footer__back-top:hover {
  color: var(--color-gold);
}

/* ═══════════════════════════════════════════
   SCROLLBAR STYLING
═══════════════════════════════════════════ */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-dark);
}

::-webkit-scrollbar-thumb {
  background: rgba(212, 175, 55, 0.3);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-gold);
}

/* ═══════════════════════════════════════════
   FOCUS VISIBLE (přístupnost)
═══════════════════════════════════════════ */
:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ═══════════════════════════════════════════
   SELECTION
═══════════════════════════════════════════ */
::selection {
  background-color: rgba(212, 175, 55, 0.3);
  color: var(--color-text);
}