/* =====================================================
   NÁJOMNÉ BÝVANIE n.o. — Design System
   Verzia 1.0 · čierno-zlatá paleta
   ===================================================== */

/* ---------- 1. Design Tokens ---------- */
:root {
  /* Farby — primárne */
  --color-black: #0A0A0A;
  --color-ink: #1A1A1A;
  --color-charcoal: #2B2B2B;
  --color-graphite: #4A4A4A;
  --color-stone: #8B8B8B;
  --color-mist: #D5D5D5;
  --color-paper: #F5F2EC;
  --color-cream: #FAF7F1;
  --color-white: #FFFFFF;

  /* Farby — akcenty (zlatá paleta) */
  --color-gold-deep: #8B6420;
  --color-gold: #B8893A;
  --color-gold-bright: #D4A84B;
  --color-gold-light: #E8C870;
  --color-gold-pale: #F2E2B6;

  /* Gradienty */
  --gradient-gold: linear-gradient(135deg, #D4A84B 0%, #E8C870 50%, #B8893A 100%);
  --gradient-gold-soft: linear-gradient(135deg, #F2E2B6 0%, #E8C870 100%);
  --gradient-dark: linear-gradient(180deg, #0A0A0A 0%, #1A1A1A 100%);

  /* Typografia */
  --font-display: 'Cormorant Garamond', 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', 'Helvetica Neue', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Veľkosti písma — modulárna škála */
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.375rem;    /* 22px */
  --text-2xl: 1.75rem;    /* 28px */
  --text-3xl: 2.25rem;    /* 36px */
  --text-4xl: 3rem;       /* 48px */
  --text-5xl: 4rem;       /* 64px */
  --text-6xl: 5.5rem;     /* 88px */

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 880px;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;

  /* Tiene */
  --shadow-sm: 0 1px 2px rgba(10, 10, 10, 0.05);
  --shadow-md: 0 4px 12px rgba(10, 10, 10, 0.08);
  --shadow-lg: 0 12px 32px rgba(10, 10, 10, 0.12);
  --shadow-gold: 0 8px 24px rgba(184, 137, 58, 0.25);

  /* Tranzície */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 200ms;
  --duration-base: 400ms;
  --duration-slow: 700ms;
}

/* ---------- 2. Reset & Základy ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-ink);
  background: var(--color-cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ---------- 3. Typografia ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--color-black);
}

h1 { font-size: clamp(var(--text-4xl), 6vw, var(--text-6xl)); font-weight: 400; }
h2 { font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl)); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

p { margin: 0 0 var(--space-4) 0; color: var(--color-charcoal); }
p:last-child { margin-bottom: 0; }

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-4);
  display: inline-block;
}

.lead {
  font-family: var(--font-display);
  font-size: clamp(var(--text-xl), 2.2vw, var(--text-2xl));
  line-height: 1.4;
  font-weight: 400;
  color: var(--color-charcoal);
  font-style: italic;
}

.gold-text {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 4. Layout ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-5);
}
.container--narrow { max-width: var(--container-narrow); }

section { padding: var(--space-10) 0; }
@media (max-width: 768px) {
  section { padding: var(--space-8) 0; }
}

/* ---------- 5. Navigácia ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: var(--space-4) 0;
  background: rgba(250, 247, 241, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all var(--duration-base) var(--ease);
}
.nav.scrolled {
  border-bottom-color: rgba(10, 10, 10, 0.08);
  box-shadow: var(--shadow-sm);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}
.nav__logo { height: 44px; width: auto; }
.nav__links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  padding: 0; margin: 0;
}
.nav__link {
  font-size: var(--text-sm);
  letter-spacing: 0.05em;
  color: var(--color-ink);
  position: relative;
  padding: var(--space-2) 0;
  transition: color var(--duration-fast) var(--ease);
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: var(--gradient-gold);
  transition: width var(--duration-base) var(--ease);
}
.nav__link:hover { color: var(--color-gold); }
.nav__link:hover::after { width: 100%; }

.nav__toggle { display: none; }

@media (max-width: 768px) {
  .nav__links {
    position: fixed;
    inset: 80px 0 0 0;
    flex-direction: column;
    background: var(--color-cream);
    padding: var(--space-7) var(--space-5);
    gap: var(--space-5);
    transform: translateX(100%);
    transition: transform var(--duration-base) var(--ease);
  }
  .nav__links.open { transform: translateX(0); }
  .nav__toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
  }
  .nav__toggle span {
    width: 24px; height: 1.5px;
    background: var(--color-ink);
    transition: all var(--duration-fast) var(--ease);
  }
}

/* ---------- 6. Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--color-black);
  color: var(--color-cream);
  overflow: hidden;
  padding-top: 100px;
}
.hero__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(212, 168, 75, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(184, 137, 58, 0.08) 0%, transparent 50%),
    var(--color-black);
}
.hero__bg::after {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(212, 168, 75, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 168, 75, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}
.hero__content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}
.hero__eyebrow {
  color: var(--color-gold-bright);
  opacity: 0;
  animation: fadeUp var(--duration-slow) var(--ease) forwards;
}
.hero__title {
  color: var(--color-cream);
  margin: var(--space-3) 0 var(--space-5) 0;
  opacity: 0;
  animation: fadeUp var(--duration-slow) var(--ease) 150ms forwards;
}
.hero__title em {
  font-style: italic;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__sub {
  font-size: var(--text-lg);
  color: var(--color-mist);
  max-width: 620px;
  margin-bottom: var(--space-7);
  opacity: 0;
  animation: fadeUp var(--duration-slow) var(--ease) 300ms forwards;
}
.hero__cta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp var(--duration-slow) var(--ease) 450ms forwards;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 7. Tlačidlá ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: all var(--duration-base) var(--ease);
  position: relative;
  overflow: hidden;
}
.btn--primary {
  background: var(--gradient-gold);
  color: var(--color-black);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}
.btn--ghost {
  color: var(--color-cream);
  border: 1px solid rgba(212, 168, 75, 0.4);
}
.btn--ghost:hover {
  background: rgba(212, 168, 75, 0.08);
  border-color: var(--color-gold-bright);
}
.btn--dark {
  background: var(--color-black);
  color: var(--color-cream);
}
.btn--dark:hover {
  background: var(--color-ink);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn__arrow { transition: transform var(--duration-base) var(--ease); }
.btn:hover .btn__arrow { transform: translateX(4px); }

/* ---------- 8. Sekcie — všeobecné ---------- */
.section__header {
  margin-bottom: var(--space-8);
  max-width: 720px;
}
.section__divider {
  width: 60px;
  height: 2px;
  background: var(--gradient-gold);
  margin-bottom: var(--space-5);
}

/* ---------- 9. Misia (O nás) ---------- */
.mission {
  background: var(--color-cream);
  position: relative;
}
.mission__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-9);
  align-items: start;
}
@media (max-width: 900px) {
  .mission__grid { grid-template-columns: 1fr; gap: var(--space-7); }
}
.mission__visual {
  position: sticky;
  top: 120px;
  aspect-ratio: 4/5;
  background: var(--color-black);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
}
.mission__visual::before {
  content: '';
  position: absolute; inset: 0;
  background:
    linear-gradient(135deg, transparent 0%, rgba(212, 168, 75, 0.15) 100%),
    repeating-linear-gradient(90deg, transparent 0, transparent 80px, rgba(212, 168, 75, 0.06) 80px, rgba(212, 168, 75, 0.06) 81px),
    repeating-linear-gradient(0deg, transparent 0, transparent 80px, rgba(212, 168, 75, 0.06) 80px, rgba(212, 168, 75, 0.06) 81px);
}
.mission__visual::after {
  content: '';
  position: absolute;
  bottom: var(--space-6);
  left: var(--space-6);
  right: var(--space-6);
  height: 2px;
  background: var(--gradient-gold);
}
.mission__visual-text {
  position: absolute;
  bottom: var(--space-7);
  left: var(--space-6);
  right: var(--space-6);
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  color: var(--color-gold-light);
  line-height: 1.4;
}

/* ---------- 10. Hodnoty / Princípy ---------- */
.values {
  background: var(--color-paper);
  border-top: 1px solid rgba(10, 10, 10, 0.06);
  border-bottom: 1px solid rgba(10, 10, 10, 0.06);
}
.values__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-7);
}
@media (max-width: 900px) {
  .values__grid { grid-template-columns: 1fr; }
}
.value-card {
  padding: var(--space-6);
  background: var(--color-cream);
  border-radius: var(--radius-md);
  border-top: 2px solid var(--color-gold);
  transition: transform var(--duration-base) var(--ease), box-shadow var(--duration-base) var(--ease);
}
.value-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.value-card__num {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-style: italic;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: var(--space-4);
}
.value-card h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}
.value-card p {
  font-size: var(--text-sm);
  line-height: 1.7;
}

/* ---------- 11. Čísla / Štatistiky ---------- */
.stats {
  background: var(--color-black);
  color: var(--color-cream);
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
@media (max-width: 768px) {
  .stats__grid { grid-template-columns: 1fr; gap: var(--space-7); }
}
.stat {
  text-align: center;
  padding: var(--space-5);
  border-left: 1px solid rgba(212, 168, 75, 0.2);
}
.stat:first-child { border-left: none; }
@media (max-width: 768px) {
  .stat { border-left: none; border-top: 1px solid rgba(212, 168, 75, 0.2); padding-top: var(--space-6); }
  .stat:first-child { border-top: none; }
}
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl));
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: var(--space-3);
}
.stat__label {
  font-size: var(--text-sm);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-mist);
}

/* ---------- 12. Kontakt ---------- */
.contact {
  background: var(--color-cream);
}
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
}
@media (max-width: 900px) {
  .contact__grid { grid-template-columns: 1fr; }
}
.contact-card {
  padding: var(--space-7);
  background: var(--color-black);
  color: var(--color-cream);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}
.contact-card::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(212, 168, 75, 0.15) 0%, transparent 70%);
  pointer-events: none;
}
.contact-card h3 {
  color: var(--color-cream);
  margin-bottom: var(--space-5);
  position: relative;
}
.contact-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-top: 1px solid rgba(212, 168, 75, 0.15);
  position: relative;
}
.contact-item:first-of-type { border-top: none; padding-top: 0; }
.contact-item__label {
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold-bright);
  min-width: 100px;
}
.contact-item__value {
  font-size: var(--text-base);
  color: var(--color-cream);
  font-weight: 400;
}
.contact-item__value a:hover { color: var(--color-gold-bright); }

/* ---------- 13. Footer ---------- */
.footer {
  background: var(--color-black);
  color: var(--color-stone);
  padding: var(--space-7) 0 var(--space-5) 0;
  border-top: 1px solid rgba(212, 168, 75, 0.15);
}
.footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid rgba(212, 168, 75, 0.1);
  margin-bottom: var(--space-5);
}
.footer__logo { height: 50px; filter: brightness(0) invert(1) opacity(0.9); }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
}
.footer__legal { color: var(--color-graphite); }

/* ---------- 14. Pomocné triedy ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease), transform var(--duration-slow) var(--ease);
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

::selection {
  background: var(--color-gold-bright);
  color: var(--color-black);
}