/* === Banana Clean Landing — Terminal Banana === */

/* --- Переменные --- */
:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16162a;
  --bg-elevated: #1e1e36;
  --accent: #FFD700;
  --accent-dim: rgba(255, 215, 0, 0.4);
  --accent-glow: rgba(255, 215, 0, 0.08);
  --text-primary: #FFFFFF;
  --text-secondary: #B0B0B0;
  --text-muted: #6a6a80;
  --border-accent: rgba(255, 215, 0, 0.25);
  --font-heading: 'DM Mono', monospace;
  --font-body: 'Manrope', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Типографика --- */
h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: 1.2;
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
h3 { font-size: clamp(1.05rem, 2vw, 1.3rem); }

p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 640px;
}

/* --- Контейнер --- */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Секции --- */
section { position: relative; }

.section-alt {
  background: var(--bg-secondary);
}

/* --- Утилиты --- */
.accent {
  color: var(--accent);
  font-family: var(--font-heading);
  font-weight: 500;
}

/* --- Кнопки --- */
.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
  font-family: var(--font-heading);
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.15s;
  box-shadow: 4px 4px 0 var(--accent);
}

.btn-primary:hover {
  background: var(--accent);
  color: var(--bg-primary);
  box-shadow: 2px 2px 0 var(--accent);
  transform: translate(2px, 2px);
}

.btn-secondary {
  display: inline-block;
  padding: 14px 32px;
  background: transparent;
  color: var(--text-secondary);
  border: 2px solid var(--border-accent);
  font-family: var(--font-heading);
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}


/* ========================================
   HERO
   ======================================== */

.hero {
  padding: 80px 0 64px;
  position: relative;
  overflow: hidden;
}

/* Grain texture overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* Тонкая горизонтальная линия-разделитель снизу */
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 24px;
  right: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-dim), transparent);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  padding: 4px 12px;
  border: 1px solid var(--border-accent);
}

.hero__subtitle {
  margin: 20px 0 32px;
  font-size: 1.15rem;
  line-height: 1.7;
}

.hero__actions {
  margin-bottom: 16px;
}

.hero__hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-heading);
}

/* Мигающий курсор в заголовке */
.cursor {
  color: var(--accent);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}


/* ========================================
   BEFORE/AFTER SLIDER
   ======================================== */

.ba-slider {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border: 2px solid var(--border-accent);
  cursor: ew-resize;
  user-select: none;
  background: #0f1326;
}

.ba-slider__before,
.ba-slider__after {
  position: absolute;
  inset: 0;
}

.ba-slider__before {
  z-index: 1;
  clip-path: inset(0 10% 0 0);
}

.ba-slider__after {
  z-index: 0;
}

.ba-slider__img {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.ba-slider__img img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.ba-slider__label {
  position: absolute;
  top: 12px;
  padding: 4px 10px;
  background: rgba(0, 0, 0, 0.7);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  z-index: 3;
}

.ba-slider__before .ba-slider__label { left: 12px; }
.ba-slider__after .ba-slider__label { right: 12px; }

.ba-slider__handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 90%;
  width: 3px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transform: translateX(-50%);
}

.ba-slider__line {
  flex: 1;
  width: 2px;
  background: var(--accent);
}

.ba-slider__knob {
  width: 36px;
  height: 36px;
  border: 2px solid var(--accent);
  background: var(--bg-primary);
  color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}


/* ========================================
   GEO-БЛОК
   ======================================== */

.geo-intro {
  padding: 24px 0;
  border-bottom: 1px solid var(--border-accent);
}

.geo-intro__text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 800px;
}

.geo-intro__text strong {
  color: var(--text-primary);
}


/* ========================================
   МАТЕРИАЛЫ
   ======================================== */

.materials {
  padding: 64px 0;
}

.materials h2 {
  margin-bottom: 28px;
}

.materials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.material-card {
  display: block;
  padding: 24px;
  border: 1px solid var(--border-accent);
  background: var(--bg-elevated);
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s;
}

.material-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.material-card__eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--accent);
  font-family: var(--font-heading);
  font-size: 0.78rem;
}

.material-card h3 {
  margin-bottom: 12px;
  color: var(--text-primary);
}

.material-card p {
  font-size: 0.95rem;
}


/* ========================================
   ШАГИ
   ======================================== */

.steps {
  padding: 64px 0;
}

.steps h2 {
  margin-bottom: 40px;
}

.steps__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step-card {
  padding: 24px;
  border-left: 3px solid var(--accent);
  background: var(--bg-primary);
  transition: background 0.2s;
}

.step-card:hover {
  background: var(--bg-elevated);
}

.step-card__num {
  font-size: 2rem;
  display: block;
  margin-bottom: 12px;
  line-height: 1;
}

.step-card h3 {
  margin-bottom: 8px;
}

.step-card p {
  font-size: 0.9rem;
  line-height: 1.5;
}

.steps__formula {
  margin-top: 32px;
  padding: 16px 24px;
  border: 1px solid var(--border-accent);
  background: var(--accent-glow);
  display: inline-block;
}

.steps__formula code {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  color: var(--accent);
  letter-spacing: 0.02em;
}


/* ========================================
   ЧИСЛА
   ======================================== */

.stats {
  padding: 40px 0;
  border-top: 1px solid var(--border-accent);
  border-bottom: 1px solid var(--border-accent);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat__value {
  display: block;
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin-bottom: 4px;
}

.stat__label {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.4;
}


/* ========================================
   PRO SOON
   ======================================== */

.pro-soon-block {
  padding: 64px 0;
}

.pro-soon__panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: start;
}

.pro-soon__eyebrow {
  margin-bottom: 12px;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pro-soon__copy h2 {
  margin-bottom: 16px;
}

.pro-soon__card {
  padding: 24px;
  border: 1px solid var(--border-accent);
  background: var(--bg-primary);
}

.pro-soon__list {
  list-style: none;
  display: grid;
  gap: 10px;
  margin-bottom: 20px;
}

.pro-soon__list li {
  padding-left: 18px;
  position: relative;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.pro-soon__list li::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--font-heading);
}

.pro-soon__button {
  width: 100%;
}

.pro-soon__status {
  margin-top: 12px;
  min-height: 24px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ========================================
   FAQ
   ======================================== */

.faq {
  padding: 96px 0;
}

.faq h2 {
  margin-bottom: 40px;
}

.faq__list {
  max-width: 720px;
}

.faq__item {
  border-left: 2px solid var(--border-accent);
  margin-bottom: 4px;
  transition: border-color 0.3s;
}

.faq__item[open] {
  border-left-color: var(--accent);
}

.faq__item summary {
  padding: 16px 20px;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--text-primary);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.2s;
}

.faq__item summary:hover {
  color: var(--accent);
}

.faq__item summary::-webkit-details-marker {
  display: none;
}

.faq__item summary::after {
  content: '+';
  color: var(--accent);
  font-size: 1.4rem;
  font-family: var(--font-heading);
  transition: transform 0.3s;
  flex-shrink: 0;
}

.faq__item[open] summary::after {
  transform: rotate(45deg);
}

.faq__answer {
  padding: 0 20px 16px;
}

.faq__answer p {
  font-size: 0.95rem;
  line-height: 1.7;
}


/* ========================================
   ВНУТРЕННИЕ СТРАНИЦЫ
   ======================================== */

.page-hero {
  padding: 64px 0 32px;
  border-bottom: 1px solid var(--border-accent);
}

.page-breadcrumbs {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.8rem;
}

.page-breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
}

.page-breadcrumbs a:hover {
  color: var(--accent);
}

.page-kicker {
  margin-bottom: 12px;
  color: var(--accent);
  font-family: var(--font-heading);
  font-size: 0.82rem;
}

.page-lead {
  margin-top: 20px;
  max-width: 860px;
  font-size: 1.12rem;
}

.page-body {
  padding: 40px 0 24px;
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 24px;
  align-items: start;
}

.page-main,
.page-side {
  display: grid;
  gap: 20px;
}

.page-card,
.page-note {
  padding: 24px;
  border: 1px solid var(--border-accent);
  background: var(--bg-elevated);
}

.page-card h2,
.page-note h3 {
  margin-bottom: 14px;
}

.page-list {
  padding-left: 20px;
  color: var(--text-secondary);
}

.page-list li + li {
  margin-top: 10px;
}

.page-list--ordered {
  list-style: decimal;
}


/* ========================================
   CTA
   ======================================== */

.cta {
  padding: 64px 0;
  text-align: center;
}

.cta h2 {
  margin-bottom: 12px;
}

.cta__sub {
  margin: 0 auto 32px;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.cta__buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.sticky-install {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 20;
  opacity: 0;
  transform: translateY(18px);
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}

.sticky-install[data-visible="true"] {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.sticky-install__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 240px;
  padding: 14px 22px;
  border: 2px solid var(--accent);
  background: rgba(10, 15, 34, 0.92);
  color: var(--accent);
  box-shadow: 4px 4px 0 var(--accent);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  text-decoration: none;
  backdrop-filter: blur(10px);
}

.sticky-install__button:hover {
  background: var(--accent);
  color: var(--bg-primary);
}


/* ========================================
   FOOTER
   ======================================== */

.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border-accent);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.footer__links {
  display: flex;
  gap: 24px;
}

.footer__links a {
  color: var(--text-muted);
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  transition: color 0.2s;
}

.footer__links a:hover {
  color: var(--accent);
}

.footer__version {
  font-family: var(--font-heading);
}

.footer__copy {
  font-family: var(--font-heading);
}


/* ========================================
   АДАПТИВ
   ======================================== */

@media (max-width: 900px) {
  .hero__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .pro-soon__panel {
    grid-template-columns: 1fr;
  }

  .materials__grid,
  .page-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .stats__grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}

@media (max-width: 520px) {
  .hero {
    padding: 48px 0 40px;
  }

  .hero__subtitle {
    font-size: 1rem;
  }

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

  .cta__buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .cta__buttons .btn-primary,
  .cta__buttons .btn-secondary {
    text-align: center;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .sticky-install {
    left: 16px;
    right: 16px;
    bottom: 16px;
  }

  .sticky-install__button {
    width: 100%;
    min-width: 0;
    box-shadow: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cursor { animation: none; }
  .faq__item summary::after { transition: none; }
  .step-card { transition: none; }
  .btn-primary { transition: none; }
  .sticky-install { transition: none; }
}