/* =============================================
   CALM RANGE: RADIUS CONTROL
   Mobile-first CSS → Desktop breakpoint 1200px
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&display=swap');

/* --- TOKENS --- */
:root {
  --clr-bg: #0e1627;
  --clr-accent: #a29cfd;
  --clr-accent-lt: #a29cfd;
  --clr-text-dark: #080945;
  --clr-text-light: #e8e8f0;
  --clr-muted: #5d5d5d;
  --clr-border: #e0e0ec;
  --clr-white: #ffffff;

  --font-display: 'Manrope', system-ui, sans-serif;
  --font-body: 'Manrope', system-ui, sans-serif;

  --sidebar-w: 520px;
  --header-h: 52px;

  --r-card: 8px;
  --r-btn: 4px;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 56px;
  --space-xl: 80px;
}

/* --- RESET --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  /* запобігає зміщенню при появі/зникненні scrollbar */
  scrollbar-gutter: stable;
}
body {
  background: var(--clr-white);
  color: var(--clr-text-dark);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  /* НЕ ставимо overflow-x: hidden на body — це ламає fixed позиціонування */
  min-height: 100vh;
}
a {
  color: inherit;
  text-decoration: none;
}
ul,
ol {
  list-style: none;
}
img,
video {
  display: block;
  max-width: 100%;
}
button {
  cursor: pointer;
  border: none;
  background: none;
}

/* =============================================
   IMAGES
   ============================================= */
.hero-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--r-card);
  display: block;
}
.hero-screenshot-img {
  flex: 1 1 0;
  min-width: 0;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--r-card);
  display: block;
}
.banner-img {
  width: 100%;
  aspect-ratio: 13/7;
  object-fit: cover;
  border-radius: var(--r-card);
  display: block;
}
.strategy-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--r-card);
  display: block;
}
.mode-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--r-card);
  display: block;
}

/* =============================================
   HEADER (mobile only)
   ============================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--clr-bg);
  border-bottom: 1px solid var(--clr-border);
  height: var(--header-h);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--space-sm);
  gap: var(--space-xs);
}
.site-title {
  font-size: 13px;
  color: var(--clr-text-light);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 55%;
}
.header-controls {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* burger */
.burger-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 4px;
}
.burger-icon {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 22px;
}
.burger-icon span {
  display: block;
  height: 2px;
  background: var(--clr-text-light);
  border-radius: 2px;
  transition:
    transform 0.25s,
    opacity 0.25s;
  transform-origin: center;
}
.burger-toggle.is-open .burger-icon span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.burger-toggle.is-open .burger-icon span:nth-child(2) {
  opacity: 0;
}
.burger-toggle.is-open .burger-icon span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* CONTACT button */
.btn-contact {
  display: inline-block;
  background: var(--clr-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 6px 12px;
  border-radius: var(--r-btn);
  white-space: nowrap;
  transition: background 0.2s;
}
.btn-contact:hover {
  background: var(--clr-accent-lt);
}
.desktop-contact {
  display: none;
}

/* =============================================
   MOBILE NAV OVERLAY
   — темний фон, бо це overlay
   ============================================= */
.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 150;
  background: var(--clr-bg);
  padding: var(--space-md) var(--space-sm);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  visibility: hidden;
}
.mobile-nav.is-open {
  transform: translateX(0);
  visibility: visible;
}
.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav .nav-link {
  display: block;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
  padding: 6px 0;
  color: var(--clr-text-light);
  transition: color 0.2s;
}
.mobile-nav .nav-link:hover {
  color: var(--clr-accent-lt);
}
.mobile-nav .dot {
  color: var(--clr-accent);
  margin-left: 4px;
}

/* =============================================
   SIDEBAR NAV (desktop only) — темний
   ============================================= */
.sidebar-nav {
  display: none;
}

/* =============================================
   HERO-TAGLINE — темний блок
   ============================================= */
.hero-tagline {
  background: var(--clr-bg);
  color: var(--clr-text-light);
  padding: var(--space-lg) var(--space-sm);
}
.hero-tagline h1 {
  font-family: var(--font-body);
  font-size: clamp(26px, 7vw, 48px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-sm);
  color: var(--clr-text-light);
}
.hero-body {
  font-size: 14px;
  color: var(--clr-muted);
  max-width: 480px;
  margin-bottom: var(--space-md);
  /* override muted for dark bg */
  color: #9090b0;
}
.hero-screenshots {
  display: flex;
  gap: var(--space-xs);
}

/* на десктопі мобільний дублікат ховається */
.hero-tagline--mobile {
  display: block;
}

/* =============================================
   SIDEBAR NAV hidden on mobile
   ============================================= */

/* =============================================
   PAGE WRAPPER
   ============================================= */
.page-wrapper {
  width: 100%;
}

/* =============================================
   SECTIONS — mobile, білий фон
   ============================================= */
.section {
  padding: var(--space-lg) var(--space-sm);
  background: var(--clr-white);
}

/* =============================================
   HERO
   ============================================= */
.hero {
  padding: 0;
  background: var(--clr-white);
}
.hero-image-wrap {
  margin: 0;
  padding: var(--space-md) var(--space-sm) 0;
}
.hero-image-wrap .caption {
  text-align: center;
  font-size: 20px;
  color: var(--clr-muted);
  margin-top: var(--space-xs);
  display: block;
  padding-bottom: var(--space-sm);
}

/* =============================================
   SECTION TITLES
   ============================================= */
.section-title {
  font-family: var(--font-display);
  font-size: clamp(22px, 5vw, 38px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--clr-text-dark);
  text-align: center;
  margin-bottom: var(--space-xs);
}
.section-sub {
  text-align: center;
  color: var(--clr-muted);
  font-size: 13px;
  margin-bottom: var(--space-md);
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

/* =============================================
   BRIEF SUMMARY
   ============================================= */
.summary .body-text {
  max-width: 580px;
  margin: 0 auto var(--space-sm);
  text-align: center;
  font-size: 14px;
  color: var(--clr-muted);
}
.summary .body-text.emphasis {
  color: var(--clr-text-dark);
  font-style: italic;
  font-weight: 600;
}

/* =============================================
   CORE MECHANICS
   ============================================= */
.mechanics-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  max-width: 640px;
  margin: 0 auto;
}
.mechanic-card {
  background: var(--clr-accent);
  color: var(--clr-text-dark);
  border-radius: var(--r-card);
  padding: var(--space-sm);
  height: 135px;
  font-size: 16px;
  line-height: 1.4;
  font-weight: 400;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

/* =============================================
   FULL-WIDTH IMAGE
   ============================================= */
.full-image-block {
  padding: 0 var(--space-sm);
  margin: var(--space-md) 0;
  background: var(--clr-white);
}

/* =============================================
   STRATEGY
   ============================================= */
.strategy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  max-width: 640px;
  margin: 0 auto;
}
.strategy-item figcaption {
  text-align: center;
  font-size: 12px;
  color: var(--clr-muted);
  margin-top: 6px;
}

/* =============================================
   MODES SLIDER (mobile)
   ============================================= */
.modes-desktop-grid {
  display: none;
}

.modes-slider {
  overflow: hidden;
  position: relative;
}
.modes-track {
  display: flex;
  transition: transform 0.35s ease;
}
.modes-track .mode-card {
  min-width: 100%;
  padding: 0 4px;
}
.mode-card .mode-img {
  margin-bottom: var(--space-xs);
}
.mode-card p {
  text-align: center;
  font-size: 13px;
  color: var(--clr-muted);
  line-height: 1.4;
}

/* dots */
.slider-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: var(--space-sm);
}
.dot-btn {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ccc;
  transition: background 0.2s;
  padding: 0;
}
.dot-btn.active {
  background: var(--clr-accent);
}

/* =============================================
   FAQ
   ============================================= */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 720px;
  margin: 0 auto;
}
.faq-item {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}
.faq-number {
  font-family: var(--font-display);
  font-size: clamp(48px, 10vw, 80px);
  font-weight: 700;
  color: var(--clr-accent);
  line-height: 1;
  min-width: 48px;
  flex-shrink: 0;
}
.faq-q {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--clr-text-dark);
}
.faq-a {
  font-size: 14px;
  color: var(--clr-muted);
  line-height: 1.6;
}

/* =============================================
   FOOTER — темний
   ============================================= */
.site-footer {
  background: var(--clr-text-light);
  color: var(--clr-text-light);
  padding: var(--space-lg) var(--space-sm) var(--space-md);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 900px;
}
.footer-title {
  font-family: var(--font-body);
  font-size: clamp(32px, 8vw, 52px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--clr-text-dark);
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-col p {
  font-size: 13px;
  color: #9090b0;
}
.footer-email {
  font-size: 14px;
  color: var(--clr-accent-lt);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.footer-email:hover {
  color: #fff;
}
.footer-policies {
  gap: 8px;
}
.footer-policies a {
  font-size: 13px;
  color: #9090b0;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s;
}
.footer-policies a:hover {
  color: var(--clr-text-light);
}
.footer-bottom {
  margin-top: var(--space-md);
  border-top: 1px solid #2a2e4a;
  padding-top: var(--space-sm);
}
.footer-bottom p {
  font-size: 12px;
  color: #9090b0;
}

/* =============================================
   DESKTOP — 1200px+
   ============================================= */
@media (min-width: 1200px) {
  /* Hide mobile elements */
  .site-header {
    display: none;
  }
  .mobile-nav {
    display: none !important;
  }
  .hero-tagline--mobile {
    display: none;
  }

  /* SIDEBAR — темний */
  .sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-w);
    height: 100vh;
    padding: var(--space-lg) var(--space-sm) var(--space-lg) var(--space-md);
    background: var(--clr-bg);
    border-right: 1px solid #2a2e4a;
    z-index: 100;
    overflow-y: auto;
  }
  .sidebar-nav ul {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }
  .sidebar-nav .nav-link {
    display: block;
    font-size: 20px;
    font-weight: 700;
    line-height: 1.3;
    padding: 3px 0;
    color: var(--clr-text-light);
    transition: color 0.2s;
  }
  .sidebar-nav .nav-link:hover {
    color: var(--clr-accent-lt);
  }
  .sidebar-nav .dot {
    color: var(--clr-accent);
    margin-left: 4px;
  }

  /* hero-tagline всередині sidebar — без окремого фону, sidebar вже темний */
  .sidebar-nav .hero-tagline {
    background: transparent;
    padding: 0;
    color: var(--clr-text-light);
    flex-shrink: 0;
  }
  .sidebar-nav .hero-tagline h1 {
    font-size: clamp(18px, 1.6vw, 26px);
    margin-bottom: var(--space-xs);
  }
  .sidebar-nav .hero-body {
    font-size: 12px;
    margin-bottom: var(--space-sm);
  }
  .sidebar-nav .hero-screenshots {
    gap: 4px;
  }

  .sidebar-desc {
    font-size: 12px;
    color: #9090b0;
    line-height: 1.5;
  }
  .desktop-contact {
    display: inline-block;
    align-self: flex-start;
  }

  /* Page wrapper — padding-left замість margin-left,
     щоб scrollbar не зміщував контент */
  .page-wrapper {
    padding-left: var(--sidebar-w);
    width: 100%;
  }

  /* Sections */
  .section {
    padding: var(--space-xl) var(--space-lg);
  }
  .full-image-block {
    padding: 0 var(--space-lg);
  }

  /* Hero */
  .hero-image-wrap {
    padding: var(--space-lg) var(--space-lg) 0;
  }

  /* Mechanics grid */
  .mechanics-grid {
    grid-template-columns: 1fr 1fr;
    max-width: 680px;
    margin: 0 auto;
  }
  .mechanic-card {
    padding: var(--space-md);
    font-size: 16px;
  }

  /* Strategy — 4 cols */
  .strategy-grid {
    grid-template-columns: repeat(4, 1fr);
    max-width: none;
  }

  /* Modes */
  .modes-slider {
    display: none;
  }
  .modes-desktop-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }
  .modes-desktop-grid .mode-card p {
    text-align: center;
    font-size: 13px;
    color: var(--clr-muted);
    line-height: 1.4;
    margin-top: var(--space-xs);
  }

  /* FAQ */
  .faq-item {
    gap: var(--space-lg);
  }
  .faq-number {
    min-width: 64px;
  }

  /* Footer */
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
  .footer-links {
    flex-direction: row;
    gap: var(--space-xl);
    align-items: flex-start;
  }

  /* anchor scroll не ховається за sidebar (немає fixed header на десктопі) */
  html {
    scroll-padding-top: 32px;
  }
}

/* =============================================
   REDUCED MOTION
   ============================================= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
  }
  .modes-track {
    transition: none;
  }
}